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1 | (* MLton 20010629 (built Fri Jun 29 11:14:21 2001 on starlinux) *) |
2 | (* created this file on Fri Jun 29 13:02:19 2001. *) | |
3 | (* Do not edit this file. *) | |
4 | (* Flag settings: *) | |
5 | (* aux: false *) | |
6 | (* chunk: chunk per function *) | |
7 | (* debug: false *) | |
8 | (* defines: [NODEBUG,MLton_safe=TRUE,MLton_detectOverflow=TRUE] *) | |
9 | (* detect overflow: true *) | |
10 | (* fixed heap: None *) | |
11 | (* indentation: 3 *) | |
12 | (* includes: [mlton.h] *) | |
13 | (* inline: NonRecursive {product = 320,small = 60} *) | |
14 | (* input file: fxp.cm *) | |
15 | (* instrument: false *) | |
16 | (* instrument Sxml: false *) | |
17 | (* keep Cps: false *) | |
18 | (* native: true *) | |
19 | (* native commented: 0 *) | |
20 | (* native copy prop: true *) | |
21 | (* future: 64 *) | |
22 | (* native ieee fp: false *) | |
23 | (* native live transfer: true *) | |
24 | (* native move hoist: true *) | |
25 | (* native optimize: 1 *) | |
26 | (* native split: Some (20000) *) | |
27 | (* polyvariance: Some ({rounds = 2,small = 30,product = 300}) *) | |
28 | (* print at fun entry: false *) | |
29 | (* profile: false *) | |
30 | (* safe: true *) | |
31 | (* show types: false *) | |
32 | (* static: false *) | |
33 | (* use basis library: true *) | |
34 | (* verbosity: Silent *) | |
35 | (* start of ../../Util/utilTime.sml *) | |
36 | ||
37 | ||
38 | ||
39 | (*--------------------------------------------------------------------------*) | |
40 | (* Structure: UtilTime *) | |
41 | (* *) | |
42 | (* Depends on: *) | |
43 | (* *) | |
44 | (* Exceptions raised by functions in this structure: *) | |
45 | (* time : none *) | |
46 | (* timeN : none *) | |
47 | (*--------------------------------------------------------------------------*) | |
48 | signature UtilTime = | |
49 | sig | |
50 | val time : ('a -> 'b) -> 'a -> 'b * {usr:Time.time, sys:Time.time, gc:Time.time} | |
51 | val timeN : int -> ('a -> 'b) -> 'a -> 'b * {usr:Time.time, sys:Time.time, gc:Time.time} | |
52 | end | |
53 | ||
54 | structure UtilTime : UtilTime = | |
55 | struct | |
56 | (*--------------------------------------------------------------------*) | |
57 | (* run f on x, and measure the runtime. return the result and time. *) | |
58 | (*--------------------------------------------------------------------*) | |
59 | fun time f x = let val timer = Timer.startCPUTimer () | |
60 | val y = f x | |
61 | val ptime = Timer.checkCPUTimer timer | |
62 | in (y,ptime) | |
63 | end | |
64 | ||
65 | (*--------------------------------------------------------------------*) | |
66 | (* run f n times on x, and measure the runtime. return the time. *) | |
67 | (*--------------------------------------------------------------------*) | |
68 | fun timeN n f x = | |
69 | let fun iter m = if m<=1 then f x else (ignore (f x); iter (m-1)) | |
70 | in time iter n | |
71 | end | |
72 | end | |
73 | (* stop of ../../Util/utilTime.sml *) | |
74 | (* start of ../../Util/utilString.sml *) | |
75 | (*--------------------------------------------------------------------------*) | |
76 | (* Structure: UtilString *) | |
77 | (*--------------------------------------------------------------------------*) | |
78 | signature UtilString = | |
79 | sig | |
80 | val quoteString : char -> string -> string | |
81 | ||
82 | val numberNth : int -> string | |
83 | val prependAnA : string -> string | |
84 | ||
85 | val nBlanks : int -> string | |
86 | val padxLeft : char -> string * int -> string | |
87 | val padxRight : char -> string * int -> string | |
88 | ||
89 | val breakLines : int -> string -> string list | |
90 | ||
91 | val toUpperFirst : string -> string | |
92 | val toUpperString : string -> string | |
93 | ||
94 | val Int2String : int -> string | |
95 | ||
96 | val Bool2xString : string * string -> bool -> string | |
97 | val Bool2String : bool -> string | |
98 | ||
99 | val Option2xString : string * (('a -> string) -> 'a -> string) | |
100 | -> ('a -> string) -> 'a option -> string | |
101 | val Option2String0 : ('a -> string) -> 'a option -> string | |
102 | val Option2String : ('a -> string) -> 'a option -> string | |
103 | ||
104 | val List2xString : string * string * string -> ('a -> string) -> 'a list -> string | |
105 | val List2String0 : ('a -> string) -> 'a list -> string | |
106 | val List2String : ('a -> string) -> 'a list -> string | |
107 | ||
108 | val Vector2xString : string * string * string -> ('a -> string) -> 'a vector -> string | |
109 | val Vector2String : ('a -> string) -> 'a vector -> string | |
110 | end | |
111 | ||
112 | structure UtilString : UtilString = | |
113 | struct | |
114 | fun quoteString q s = let val quote = String.implode [q] in quote^s^quote end | |
115 | ||
116 | (*--------------------------------------------------------------------*) | |
117 | (* generate a string with the ordinal number of n, by appending *) | |
118 | (* "st", "nd", "rd" or "th" to the number. *) | |
119 | (*--------------------------------------------------------------------*) | |
120 | fun numberNth n = | |
121 | let val suffix = case n mod 9 | |
122 | of 1 => "st" | |
123 | | 2 => "nd" | |
124 | | 3 => "rd" | |
125 | | _ => "th" | |
126 | in Int.toString n^suffix | |
127 | end | |
128 | ||
129 | (*--------------------------------------------------------------------*) | |
130 | (* is the single character c represented by a word starting with a *) | |
131 | (* vocal in the alphabet? (l~ell->true, k~kay->false) *) | |
132 | (*--------------------------------------------------------------------*) | |
133 | fun vocalLetter c = | |
134 | case Char.toLower c | |
135 | of #"a" => true | |
136 | | #"f" => true | |
137 | | #"h" => true | |
138 | | #"i" => true | |
139 | | #"l" => true | |
140 | | #"m" => true | |
141 | | #"n" => true | |
142 | | #"o" => true | |
143 | | #"r" => true | |
144 | | #"s" => true | |
145 | | #"x" => true | |
146 | | #"8" => true | |
147 | | _ => false | |
148 | ||
149 | (*--------------------------------------------------------------------*) | |
150 | (* is character c a vocal? *) | |
151 | (*--------------------------------------------------------------------*) | |
152 | fun isVocal c = | |
153 | case Char.toLower c | |
154 | of #"a" => true | |
155 | | #"e" => true | |
156 | | #"i" => true | |
157 | | #"o" => true | |
158 | | #"u" => true | |
159 | | _ => false | |
160 | ||
161 | (*--------------------------------------------------------------------*) | |
162 | (* does a word require "an" as undefinite article? true if: *) | |
163 | (* - it is a single letter that starts with a vocal in the alphabet *) | |
164 | (* - its first two letters are capitals, i.e. it is an abbreviation, *) | |
165 | (* and its first letter starts with a vocal in the alphabet *) | |
166 | (* - it has more than one letter, is not an abbreviation, and either *) | |
167 | (* + it starts with a, i or o *) | |
168 | (* + it starts with e and the second letter is not a u (europe) *) | |
169 | (* + it starts with a u and continues with a vocal (very unlikely, *) | |
170 | (* only in c.s., like uuencoded or uid *) | |
171 | (* + it starts with a u, continues with a consonant not followed by *) | |
172 | (* an i (like in unicode); that is something like un-... *) | |
173 | (* This ruleset is not complete since it does not cover, e.g., the *) | |
174 | (* word uninvented, but sufficient for most cases. *) | |
175 | (* (Is english pronounciation decidable at all?) *) | |
176 | (*--------------------------------------------------------------------*) | |
177 | fun extendsAtoAn word = | |
178 | case String.explode word | |
179 | of nil => false | |
180 | | [c] => vocalLetter c | |
181 | | c1::c2::cs => if not (Char.isLower c1 orelse Char.isLower c2) | |
182 | then vocalLetter c1 | |
183 | else case Char.toLower c1 | |
184 | of #"a" => true | |
185 | | #"i" => true | |
186 | | #"o" => true | |
187 | | #"e" => Char.toLower c2 <> #"u" | |
188 | | #"u" => if isVocal c2 then false | |
189 | else (case cs | |
190 | of nil => true | |
191 | | c3::_ => Char.toLower c3 <> #"i") | |
192 | | _ => false | |
193 | ||
194 | (*--------------------------------------------------------------------*) | |
195 | (* add an undefinite article to a word. *) | |
196 | (*--------------------------------------------------------------------*) | |
197 | fun prependAnA word = if extendsAtoAn word then "an "^word else "a "^word | |
198 | ||
199 | (*--------------------------------------------------------------------*) | |
200 | (* generate a list/string of n times character c. *) | |
201 | (*--------------------------------------------------------------------*) | |
202 | fun nCharsC c n = if n>0 then c::nCharsC c (n-1) else nil | |
203 | fun nChars c n = String.implode (nCharsC c n) | |
204 | val nBlanks = nChars #" " | |
205 | ||
206 | (*--------------------------------------------------------------------*) | |
207 | (* add a minimal number of characters c to the left/right of a string *) | |
208 | (* in order to make its length at least n. *) | |
209 | (*--------------------------------------------------------------------*) | |
210 | fun padxLeft c (s,n) = (nChars c (n-String.size s))^s | |
211 | fun padxRight c (s,n) = s^(nChars c (n-String.size s)) | |
212 | val padLeft = padxLeft #" " | |
213 | val padRight = padxRight #" " | |
214 | ||
215 | (*--------------------------------------------------------------------*) | |
216 | (* break a string into several lines of length width. *) | |
217 | (*--------------------------------------------------------------------*) | |
218 | fun breakLines width str = | |
219 | let | |
220 | val tokens = String.tokens (fn c => #" "=c) str | |
221 | fun makeLine(toks,lines) = if null toks then lines | |
222 | else (String.concat (rev toks))::lines | |
223 | fun doit w (toks,lines) nil = makeLine(toks,lines) | |
224 | | doit w (toks,lines) (one::rest) = | |
225 | let | |
226 | val l = String.size one | |
227 | val w1 = w+l | |
228 | in | |
229 | if w1<width then doit (w1+1) (" "::one::toks,lines) rest | |
230 | else if w1=width then doit 0 (nil,makeLine(one::toks,lines)) rest | |
231 | else if l>=width then doit 0 (nil,one::makeLine(toks,lines)) rest | |
232 | else doit (l+1) ([" ",one],makeLine(toks,lines)) rest | |
233 | end | |
234 | in List.rev (doit 0 (nil,nil) tokens) | |
235 | end | |
236 | ||
237 | (*--------------------------------------------------------------------*) | |
238 | (* convert the first/all characters of a string to upper case *) | |
239 | (*--------------------------------------------------------------------*) | |
240 | fun toUpperFirst str = | |
241 | case String.explode str | |
242 | of nil => "" | |
243 | | c::cs => String.implode (Char.toUpper c::cs) | |
244 | fun toUpperString str = | |
245 | String.implode(map Char.toUpper (String.explode str)) | |
246 | ||
247 | (*--------------------------------------------------------------------*) | |
248 | (* return a string representation of an int, char or unit. *) | |
249 | (*--------------------------------------------------------------------*) | |
250 | val Int2String = Int.toString | |
251 | val Char2String = Char.toString | |
252 | fun Unit2String() = "()" | |
253 | ||
254 | (*--------------------------------------------------------------------*) | |
255 | (* return a string representation of a boolean. *) | |
256 | (*--------------------------------------------------------------------*) | |
257 | fun Bool2xString (t,f) b = if b then t else f | |
258 | val Bool2String = Bool2xString ("true","false") | |
259 | ||
260 | (*--------------------------------------------------------------------*) | |
261 | (* return a string representation of an option. *) | |
262 | (* the first arg is a string for the NONE case, the second a function *) | |
263 | (* that converts x to a string, given a function for doing so. *) | |
264 | (*--------------------------------------------------------------------*) | |
265 | fun Option2xString (none,Some2String) x2String opt = | |
266 | case opt | |
267 | of NONE => none | |
268 | | SOME x => Some2String x2String x | |
269 | fun Option2String0 x2String = Option2xString ("",fn f => fn x => f x) x2String | |
270 | fun Option2String x2String = Option2xString ("NONE",fn f => fn x => "SOME "^f x) x2String | |
271 | ||
272 | (*--------------------------------------------------------------------*) | |
273 | (* return a string representation of list; start with pre, separate *) | |
274 | (* with sep and finish with post; use X2String for each element. *) | |
275 | (*--------------------------------------------------------------------*) | |
276 | fun List2xString (pre,sep,post) X2String nil = pre^post | |
277 | | List2xString (pre,sep,post) X2String l = | |
278 | let fun doit nil _ = [post] | |
279 | | doit (x::r) str = str::X2String x::doit r sep | |
280 | in String.concat (doit l pre) | |
281 | end | |
282 | fun List2String X2String nil = "[]" | |
283 | | List2String X2String l = | |
284 | let fun doit nil _ = ["]"] | |
285 | | doit (x::r) str = str::X2String x::doit r "," | |
286 | in String.concat (doit l "[") | |
287 | end | |
288 | fun List2String0 X2String nil = "" | |
289 | | List2String0 X2String l = | |
290 | let fun doit nil _ = nil | |
291 | | doit (x::r) str = str::X2String x::doit r " " | |
292 | in String.concat (doit l "") | |
293 | end | |
294 | ||
295 | (* a compiler bug in smlnj 110 makes the following uncompilable: *) | |
296 | (* fun List2String X2String xs = List2xString ("[",",","]") X2String xs *) | |
297 | (* fun List2String0 X2String xs = List2xString (""," ","") X2String xs *) | |
298 | ||
299 | (*--------------------------------------------------------------------*) | |
300 | (* return a string representation of list; start with pre, separate *) | |
301 | (* with sep and finish with post; use X2String for each element. *) | |
302 | (*--------------------------------------------------------------------*) | |
303 | fun Vector2xString (pre,sep,post) X2String vec = | |
304 | if Vector.length vec=0 then pre^post | |
305 | else String.concat | |
306 | (pre::X2String(Vector.sub(vec,0)):: | |
307 | Vector.foldri (fn (_,x,yet) => sep::X2String x::yet) [post] (vec,1,NONE)) | |
308 | fun Vector2String X2String vec = Vector2xString ("#[",",","]") X2String vec | |
309 | end | |
310 | (* stop of ../../Util/utilString.sml *) | |
311 | (* start of ../../Util/utilCompare.sml *) | |
312 | signature UtilCompare = | |
313 | sig | |
314 | type 'a Comparer = 'a * 'a -> order | |
315 | ||
316 | val comparePair : 'a Comparer * 'b Comparer -> ('a * 'b) Comparer | |
317 | val compareTriple : 'a Comparer * 'b Comparer * 'c Comparer -> ('a * 'b * 'c) Comparer | |
318 | ||
319 | val compareOption : 'a Comparer -> 'a option Comparer | |
320 | val compareList : 'a Comparer -> 'a list Comparer | |
321 | val compareVector : 'a Comparer -> 'a vector Comparer | |
322 | ||
323 | val compareInt : int Comparer | |
324 | val compareIntPair : (int * int) Comparer | |
325 | val compareIntTriple : (int * int * int) Comparer | |
326 | ||
327 | val compareWord : word Comparer | |
328 | val compareWordPair : (word * word) Comparer | |
329 | val compareWordTriple : (word * word * word) Comparer | |
330 | end | |
331 | ||
332 | structure UtilCompare : UtilCompare = | |
333 | struct | |
334 | type 'a Comparer = 'a * 'a -> order | |
335 | ||
336 | fun comparePair (compareA,compareB) ((a1,b1),(a2,b2)) = | |
337 | case compareA(a1,a2) | |
338 | of EQUAL => compareB(b1,b2) | |
339 | | order => order | |
340 | fun compareTriple (compareA,compareB,compareC) ((a1,b1,c1),(a2,b2,c2)) = | |
341 | case compareA(a1,a2) | |
342 | of EQUAL => (case compareB(b1,b2) | |
343 | of EQUAL => compareC(c1,c2) | |
344 | | order => order) | |
345 | | order => order | |
346 | ||
347 | val compareInt = Int.compare | |
348 | fun compareIntPair((x1,y1),(x2,y2)) = | |
349 | case Int.compare(x1,x2) | |
350 | of EQUAL => Int.compare (y1,y2) | |
351 | | order => order | |
352 | fun compareIntTriple((x1,y1,z1),(x2,y2,z2)) = | |
353 | case Int.compare(x1,x2) | |
354 | of EQUAL => (case Int.compare (y1,y2) | |
355 | of EQUAL => Int.compare (z1,z2) | |
356 | | order => order) | |
357 | | order => order | |
358 | ||
359 | val compareWord = Word.compare | |
360 | fun compareWordPair((x1,y1),(x2,y2)) = | |
361 | case Word.compare(x1,x2) | |
362 | of EQUAL => Word.compare (y1,y2) | |
363 | | order => order | |
364 | fun compareWordTriple((x1,y1,z1),(x2,y2,z2)) = | |
365 | case Word.compare(x1,x2) | |
366 | of EQUAL => (case Word.compare (y1,y2) | |
367 | of EQUAL => Word.compare (z1,z2) | |
368 | | order => order) | |
369 | | order => order | |
370 | ||
371 | fun compareOption compareA opts = | |
372 | case opts | |
373 | of (NONE,NONE) => EQUAL | |
374 | | (NONE,SOME x) => LESS | |
375 | | (SOME x,NONE) => GREATER | |
376 | | (SOME x,SOME y) => compareA(x,y) | |
377 | ||
378 | fun compareList compA ll = | |
379 | let fun doit (nil,nil) = EQUAL | |
380 | | doit (nil,_) = LESS | |
381 | | doit (_,nil) = GREATER | |
382 | | doit (a1::as1,a2::as2) = case compA(a1,a2) | |
383 | of EQUAL => doit(as1,as2) | |
384 | | order => order | |
385 | in doit ll | |
386 | end | |
387 | ||
388 | fun compareVector compA (vec1,vec2) = | |
389 | let val (l,l2) = (Vector.length vec1,Vector.length vec2) | |
390 | in case Int.compare(l,l2) | |
391 | of EQUAL => let fun doit i = if i>=l then EQUAL | |
392 | else case compA(Vector.sub(vec1,i),Vector.sub(vec2,i)) | |
393 | of EQUAL => doit (i+1) | |
394 | | order => order | |
395 | in doit 0 | |
396 | end | |
397 | | order => order | |
398 | end | |
399 | end | |
400 | ||
401 | (* stop of ../../Util/utilCompare.sml *) | |
402 | (* start of ../../Util/utilHash.sml *) | |
403 | signature UtilHash = | |
404 | sig | |
405 | val hashPair : ('a -> word) * ('b -> word) -> 'a * 'b -> word | |
406 | val hashTriple : ('a -> word) * ('b -> word) * ('c -> word) -> 'a * 'b * 'c -> word | |
407 | ||
408 | val hashOption : ('a -> word) -> 'a option -> word | |
409 | val hashList : ('a -> word) -> 'a list -> word | |
410 | val hashVector : ('a -> word) -> 'a vector -> word | |
411 | ||
412 | val hashString : string -> word | |
413 | ||
414 | val hashInt : int -> word | |
415 | val hashIntPair : int * int -> word | |
416 | val hashIntTriple : int * int * int -> word | |
417 | ||
418 | val hashWord : word -> word | |
419 | val hashWordPair : word * word -> word | |
420 | val hashWordTriple : word * word * word -> word | |
421 | end | |
422 | ||
423 | structure UtilHash : UtilHash = | |
424 | struct | |
425 | fun hashPair (hashA,hashB) (a,b) = | |
426 | 0w1327 * hashA a + 0w3853 * hashB b | |
427 | fun hashTriple (hashA,hashB,hashC) (a,b,c) = | |
428 | 0w1327 * hashA a + 0w3853 * hashB b + 0w2851 * hashC c | |
429 | ||
430 | val hashInt = | |
431 | Word.fromInt | |
432 | fun hashIntPair (i,j) = | |
433 | 0w1327 * Word.fromInt i + 0w3853 * Word.fromInt j | |
434 | fun hashIntTriple (i,j,k) = | |
435 | 0w1327 * Word.fromInt i + 0w3853 * Word.fromInt j + 0w2851 * Word.fromInt k | |
436 | ||
437 | fun hashWord w = w | |
438 | fun hashWordPair (i,j) = 0w1327 * i + 0w3853 * j | |
439 | fun hashWordTriple (i,j,k) = 0w1327 * i + 0w3853 * j + 0w2851 * k | |
440 | ||
441 | val hashChar = Word.fromInt o ord | |
442 | fun hashString s = | |
443 | case String.size s | |
444 | of 0 => 0wx0 | |
445 | | 1 => 0w1 + hashChar(String.sub(s,0)) | |
446 | | 2 => let val w1 = String.sub(s,0) | |
447 | val w2 = String.sub(s,1) | |
448 | in 0w2 + hashChar w1 * 0wx1327 + hashChar w2 | |
449 | end | |
450 | | n => let val w1 = String.sub(s,0) | |
451 | val w2 = String.sub(s,1) | |
452 | val wn = String.sub(s,n-1) | |
453 | in 0w3 + hashChar w1 * 0wx3853 + hashChar w2 * 0wx1327 + hashChar wn | |
454 | end | |
455 | ||
456 | ||
457 | fun hashOption hashA opt = | |
458 | case opt | |
459 | of NONE => 0w0 | |
460 | | SOME a => 0w1 + hashA a | |
461 | ||
462 | fun hashList hashA l = | |
463 | case l | |
464 | of nil => 0wx0 | |
465 | | [a] => 0w1 + hashA a | |
466 | | a1::a2::_ => 0w2 + 0w3853 * hashA a1 + 0wx1327 * hashA a2 | |
467 | ||
468 | fun hashVector hashA cv = | |
469 | case Vector.length cv | |
470 | of 0 => 0wx0 | |
471 | | 1 => 0w1 + hashA(Vector.sub(cv,0)) | |
472 | | 2 => let val w1 = Vector.sub(cv,0) | |
473 | val w2 = Vector.sub(cv,1) | |
474 | in 0w2 + hashA w1 * 0wx1327 + hashA w2 | |
475 | end | |
476 | | n => let val w1 = Vector.sub(cv,0) | |
477 | val w2 = Vector.sub(cv,1) | |
478 | val wn = Vector.sub(cv,n-1) | |
479 | in 0w3 + hashA w1 * 0wx3853 + hashA w2 * 0wx1327 + hashA wn | |
480 | end | |
481 | end | |
482 | ||
483 | (* stop of ../../Util/utilHash.sml *) | |
484 | (* start of ../../Util/SymDict/key.sml *) | |
485 | ||
486 | ||
487 | ||
488 | (*--------------------------------------------------------------------------*) | |
489 | (* In order to be used as a dictinary/symbol table key, a type must have a *) | |
490 | (* null value, hash to words, must be comparable and printable. *) | |
491 | (*--------------------------------------------------------------------------*) | |
492 | signature Key = | |
493 | sig | |
494 | type Key | |
495 | ||
496 | val null : Key | |
497 | val hash : Key -> word | |
498 | val compare : Key * Key -> order | |
499 | val toString : Key -> string | |
500 | end | |
501 | (* stop of ../../Util/SymDict/key.sml *) | |
502 | (* start of ../../Util/utilInt.sml *) | |
503 | (*--------------------------------------------------------------------------*) | |
504 | (* Structure: UtilInt *) | |
505 | (* *) | |
506 | (* Depends on: *) | |
507 | (* *) | |
508 | (* Exceptions raised by functions in this structure: *) | |
509 | (* appInterval : none *) | |
510 | (* insertInt : none *) | |
511 | (* insertNewInt : none *) | |
512 | (* nextPowerTwo : none *) | |
513 | (*--------------------------------------------------------------------------*) | |
514 | signature UtilInt = | |
515 | sig | |
516 | val intervalList : (int * int) -> int list | |
517 | val appInterval : (int -> unit) -> (int * int) -> unit | |
518 | val insertInt : int * int list -> int list | |
519 | val insertNewInt : int * int list -> int list option | |
520 | val powerOfTwo : int -> int | |
521 | val nextPowerTwo : int -> int | |
522 | end | |
523 | ||
524 | structure UtilInt : UtilInt = | |
525 | struct | |
526 | (*--------------------------------------------------------------------*) | |
527 | (* generate the list [n,...,m] *) | |
528 | (*--------------------------------------------------------------------*) | |
529 | fun intervalList(n,m) = if n>m then nil else n::intervalList(n+1,m) | |
530 | ||
531 | (*--------------------------------------------------------------------*) | |
532 | (* apply f to each number in [n...m] *) | |
533 | (*--------------------------------------------------------------------*) | |
534 | fun appInterval f (n,m) = | |
535 | let fun doit i = | |
536 | if i>m then () | |
537 | else let val _ = f i | |
538 | in doit (i+1) | |
539 | end | |
540 | in doit n | |
541 | end | |
542 | ||
543 | (*--------------------------------------------------------------------*) | |
544 | (* insert an integer into a sorted list without duplicates. *) | |
545 | (*--------------------------------------------------------------------*) | |
546 | fun insertInt (x:int,l) = | |
547 | let fun go nil = [x] | |
548 | | go (l as y::ys) = case Int.compare (x,y) | |
549 | of LESS => x::l | |
550 | | EQUAL => l | |
551 | | GREATER => y::go ys | |
552 | in go l | |
553 | end | |
554 | ||
555 | (*--------------------------------------------------------------------*) | |
556 | (* insert an integer into a sorted list if it is not yet in it. *) | |
557 | (*--------------------------------------------------------------------*) | |
558 | fun insertNewInt (x:int,l) = | |
559 | let | |
560 | fun go nil = SOME [x] | |
561 | | go (l as y::ys) = case Int.compare (x,y) | |
562 | of LESS => SOME(x::l) | |
563 | | EQUAL => NONE | |
564 | | GREATER => case go ys | |
565 | of NONE => NONE | |
566 | | SOME xys => SOME(y::xys) | |
567 | in go l | |
568 | end | |
569 | ||
570 | (*--------------------------------------------------------------------*) | |
571 | (* compute the power to the base of two. *) | |
572 | (*--------------------------------------------------------------------*) | |
573 | fun powerOfTwo n = | |
574 | if n=0 then 1 | |
575 | else if n mod 2=0 then let val x=powerOfTwo (n div 2) in x*x end | |
576 | else let val x=powerOfTwo (n-1) in 2*x end | |
577 | ||
578 | (*--------------------------------------------------------------------*) | |
579 | (* find the smallest p with 2^p >= n. *) | |
580 | (*--------------------------------------------------------------------*) | |
581 | fun nextPowerTwo n = | |
582 | let fun doit (p,m) = | |
583 | if m>=n then p | |
584 | else if m*m<2*n then doit (2*p,m*m) | |
585 | else doit (1+p,2*m) | |
586 | in doit (1,2) | |
587 | end | |
588 | end | |
589 | (* stop of ../../Util/utilInt.sml *) | |
590 | (* start of ../../Util/utilError.sml *) | |
591 | ||
592 | ||
593 | ||
594 | ||
595 | ||
596 | signature UtilError = | |
597 | sig | |
598 | exception InternalError of string * string * string | |
599 | exception NoSuchFile of string * string | |
600 | ||
601 | val formatMessage : int * int -> string list -> string | |
602 | end | |
603 | ||
604 | structure UtilError : UtilError = | |
605 | struct | |
606 | open UtilString | |
607 | ||
608 | exception InternalError of string * string * string | |
609 | exception NoSuchFile of string * string | |
610 | ||
611 | fun formatMessage (indentWidth,lineWidth) strs = | |
612 | let | |
613 | val indent = nBlanks indentWidth | |
614 | val nl = "\n"^indent | |
615 | val blank = " " | |
616 | val dot = "." | |
617 | ||
618 | fun isSep c = #" "=c orelse #"\n"=c orelse #"\t"=c | |
619 | ||
620 | fun go (w,yet) nil = List.rev ("\n"::yet) | |
621 | | go (w,yet) (x::xs) = | |
622 | let | |
623 | val y = if null xs then x^dot else x | |
624 | val l = String.size y | |
625 | val w1 = w+l | |
626 | val (w2,yet2) = if w1<=lineWidth then (w1,y::yet) | |
627 | else (indentWidth+l,y::nl::yet) | |
628 | val (w3,yet3) = if null xs then (w2,yet2) | |
629 | else (if w2<lineWidth then (w2+1,blank::yet2) | |
630 | else (indentWidth,nl::yet2)) | |
631 | in go (w3,yet3) xs | |
632 | end | |
633 | ||
634 | val tokens = List.concat (map (String.tokens isSep) strs) | |
635 | val fragments = go (0,nil) tokens | |
636 | in | |
637 | String.concat fragments | |
638 | end | |
639 | end | |
640 | (* stop of ../../Util/utilError.sml *) | |
641 | (* start of ../../Util/SymDict/dict.sml *) | |
642 | (*--------------------------------------------------------------------------*) | |
643 | (* Functor: Dict *) | |
644 | (* *) | |
645 | (* Depends on: *) | |
646 | (* Chars *) | |
647 | (* *) | |
648 | (* Exceptions raised by functions in this functor: *) | |
649 | (* addByIndex : NoSuchIndex *) | |
650 | (* addByKey : InternalError *) | |
651 | (* getByIndex : NoSuchIndex *) | |
652 | (* getByKey : InternalError *) | |
653 | (* getIndex : InternalError *) | |
654 | (* getKey : NoSuchIndex *) | |
655 | (* hasIndex : none *) | |
656 | (* makeDict : none *) | |
657 | (* nullDict : none *) | |
658 | (* printDict : none *) | |
659 | (* usedIndices : none *) | |
660 | (*--------------------------------------------------------------------------*) | |
661 | (* A dictionary maps keys to consecutive integers and additionally holds *) | |
662 | (* a value of arbitrary type for each entry. *) | |
663 | (*--------------------------------------------------------------------------*) | |
664 | signature Dict = | |
665 | sig | |
666 | type Key | |
667 | type 'a Dict | |
668 | ||
669 | exception NoSuchIndex | |
670 | ||
671 | val nullDict : string * 'a -> 'a Dict | |
672 | val makeDict : string * int * 'a -> 'a Dict | |
673 | val clearDict : 'a Dict * int option -> unit | |
674 | ||
675 | val hasIndex : 'a Dict * Key -> int option | |
676 | val getIndex : 'a Dict * Key -> int | |
677 | val getKey : 'a Dict * int -> Key | |
678 | ||
679 | val getByIndex : 'a Dict * int -> 'a | |
680 | val getByKey : 'a Dict * Key -> 'a | |
681 | ||
682 | val setByIndex : 'a Dict * int * 'a -> unit | |
683 | val setByKey : 'a Dict * Key * 'a -> unit | |
684 | ||
685 | val usedIndices : 'a Dict -> int | |
686 | ||
687 | val extractDict : 'a Dict -> (Key * 'a) array | |
688 | val printDict : ('a -> string) -> 'a Dict -> unit | |
689 | end | |
690 | ||
691 | functor Dict (structure Key : Key) : Dict = | |
692 | struct | |
693 | open UtilError UtilInt | |
694 | ||
695 | type Key = Key.Key | |
696 | ||
697 | exception NoSuchIndex | |
698 | ||
699 | (*--------------------------------------------------------------------*) | |
700 | (* a dictionary can have at most size MAX_WIDTH. This is because *) | |
701 | (* arrays may at most have Array.maxLen elements. We only use powers *) | |
702 | (* of two as sizes, so we are really only interested in the position *) | |
703 | (* of maxLen's highest bit. That would be the maximal width for hash *) | |
704 | (* tables, and thus we must decrease it by one for obtaining the max *) | |
705 | (* table width. *) | |
706 | (*--------------------------------------------------------------------*) | |
707 | fun highestBit w = if w=0w0 then 0 else 1+highestBit(Word.>>(w,0w1)) | |
708 | val MAX_WIDTH = highestBit (Word.fromInt Array.maxLen)-1 | |
709 | ||
710 | type Bucket = (Key * int) list | |
711 | val nullBucket = nil : Bucket | |
712 | ||
713 | (*--------------------------------------------------------------------*) | |
714 | (* buckets are unsorted - they are probably small, so comparing the *) | |
715 | (* keys might be overkill. *) | |
716 | (*--------------------------------------------------------------------*) | |
717 | fun addToBucket (ni as (key,_),bucket) = | |
718 | let | |
719 | fun doit nil = [ni] | |
720 | | doit (nis as (ni' as (key',_))::rest) = | |
721 | case Key.compare (key',key) | |
722 | of LESS => ni'::doit rest | |
723 | | EQUAL => ni::rest | |
724 | | GREATER => ni::nis | |
725 | in | |
726 | doit bucket | |
727 | end | |
728 | fun searchBucket (key,bucket) = | |
729 | let | |
730 | fun doit nil = NONE | |
731 | | doit ((key',i)::rest) = | |
732 | case Key.compare (key',key) | |
733 | of LESS => doit rest | |
734 | | EQUAL => SOME i | |
735 | | GREATER => NONE | |
736 | in | |
737 | doit bucket | |
738 | end | |
739 | ||
740 | (*--------------------------------------------------------------------*) | |
741 | (* a dictionary consists of *) | |
742 | (* - a string desc saying what is stored in this dictionary *) | |
743 | (* - an array tab holding for each index its key and value *) | |
744 | (* - a hash table, i.e. Bucket array, of double size than tab *) | |
745 | (* - a hashFun mapping Key to the range of the hash table *) | |
746 | (* - an integer width for computing table sizes *) | |
747 | (* - an integer size wich is the size of the value table *) | |
748 | (* - an integer count holding the next free index *) | |
749 | (* - a default value for the value table *) | |
750 | (*--------------------------------------------------------------------*) | |
751 | type 'a Dict = {desc : string, | |
752 | tab : (Key * 'a) array ref, | |
753 | hashTab : Bucket array ref, | |
754 | hashFun : (Key -> int) ref, | |
755 | width : int ref, (* bit width *) | |
756 | size : int ref, (* tab size=2^width, hash size is double *) | |
757 | count : int ref, (* number of entries *) | |
758 | def : 'a (* default for values *) | |
759 | } | |
760 | fun nullDict (desc,def) = {desc = desc, | |
761 | tab = ref (Array.array(1,(Key.null,def))), | |
762 | hashTab = ref (Array.array(2,nullBucket)), | |
763 | hashFun = ref (fn _ => 0), | |
764 | count = ref 0, | |
765 | size = ref 1, | |
766 | width = ref 0, | |
767 | def = def} | |
768 | ||
769 | (*--------------------------------------------------------------------*) | |
770 | (* how many entries are in the dictionary? *) | |
771 | (*--------------------------------------------------------------------*) | |
772 | fun usedIndices ({count,...}:'a Dict) = !count | |
773 | ||
774 | (*--------------------------------------------------------------------*) | |
775 | (* what is the table load, i.e. percentage of number of entries to *) | |
776 | (* hash table size = 100*count/(2*size) = 50*count/size. *) | |
777 | (*--------------------------------------------------------------------*) | |
778 | fun hashRatio({count,size,...}:'a Dict) = 50 * !count div !size | |
779 | handle Div => 100 | |
780 | ||
781 | (*--------------------------------------------------------------------*) | |
782 | (* this is the hash function. Key.hash hashes data to arbitrary *) | |
783 | (* words, that are mapped to the hash range by this function, where *) | |
784 | (* mask is the bitmask corresponding to the size of the hash table: *) | |
785 | (* 1. square the word produced by Key.hash *) | |
786 | (* 2. take the width bits from the middle of the square, these are *) | |
787 | (* the bit-places influenced by all input bit-places: *) | |
788 | (* - shift to the right by half of the destination width *) | |
789 | (* - mask out all bits to the left of destination *) | |
790 | (* this is a simple strategy but experiences good results. *) | |
791 | (*--------------------------------------------------------------------*) | |
792 | fun square (x:word) = Word.*(x,x) | |
793 | fun hashKey(half,mask) x = | |
794 | Word.toInt(Word.andb(mask,Word.>>(square(Key.hash x),half))) | |
795 | fun makeHashFun(size,width) = | |
796 | let | |
797 | val mask = 0w2*Word.fromInt size-0w1 | |
798 | val half = Word.fromInt((width+1) div 2) | |
799 | in | |
800 | hashKey(half,mask) | |
801 | end | |
802 | ||
803 | (*--------------------------------------------------------------------*) | |
804 | (* create a new dictionary for 2^w, but at least 2 and at most 2^m *) | |
805 | (* entries, where m is the value of MAX_WIDTH. *) | |
806 | (*--------------------------------------------------------------------*) | |
807 | fun makeDict (desc,w,def) = | |
808 | let | |
809 | val width= Int.min(Int.max(1,w),MAX_WIDTH) | |
810 | val size = Word.toInt(Word.<<(0w1,Word.fromInt(width-1))) | |
811 | in {desc = desc, | |
812 | tab = ref (Array.array(size,(Key.null,def))), | |
813 | hashTab = ref (Array.array(2*size,nullBucket)), | |
814 | hashFun = ref (makeHashFun(size,width)), | |
815 | width = ref width, | |
816 | size = ref size, | |
817 | count = ref 0, | |
818 | def = def} | |
819 | end | |
820 | ||
821 | (*--------------------------------------------------------------------*) | |
822 | (* clear a dictionary. If the 2nd arg is SOME w, use w for resizing. *) | |
823 | (*--------------------------------------------------------------------*) | |
824 | fun clearDict (dict:'a Dict,widthOpt) = | |
825 | case widthOpt | |
826 | of NONE => | |
827 | let | |
828 | val {tab=ref tab,hashTab=ref hashTab,size,count,def,...} = dict | |
829 | val _ = appInterval (fn i => Array.update(tab,i,(Key.null,def))) (0,!count-1) | |
830 | val _ = appInterval (fn i => Array.update(hashTab,i,nullBucket)) (0,!size*2-1) | |
831 | in | |
832 | count := 0 | |
833 | end | |
834 | | SOME w => | |
835 | let | |
836 | val {tab,hashTab,hashFun,width,size,count,def,...} = dict | |
837 | val newWidth = Int.min(Int.max(1,w),MAX_WIDTH) | |
838 | val newSize = Word.toInt(Word.<<(0w1,Word.fromInt(newWidth-1))) | |
839 | val _ = tab := (Array.array(newSize,(Key.null,def))) | |
840 | val _ = hashTab := (Array.array(2*newSize,nullBucket)) | |
841 | val _ = hashFun := (makeHashFun(newSize,newWidth)) | |
842 | val _ = width := newWidth | |
843 | val _ = size := newSize | |
844 | in | |
845 | count := 0 | |
846 | end | |
847 | ||
848 | (*--------------------------------------------------------------------*) | |
849 | (* grow a dictionary to the double size. raise InternalError if the *) | |
850 | (* dictionary already has maximal size. *) | |
851 | (*--------------------------------------------------------------------*) | |
852 | fun growDictionary ({desc,tab,hashTab,hashFun,width,size,count,def}:'a Dict) = | |
853 | let | |
854 | val oldTab = !tab | |
855 | val _ = if !width < MAX_WIDTH then width := !width+1 | |
856 | else raise InternalError | |
857 | ("Dict","growDictionary", | |
858 | String.concat ["growing the ",desc," dictionary ", | |
859 | "exceeded the system maximum size of ", | |
860 | Int.toString Array.maxLen," for arrays"]) | |
861 | val _ = size := !size*2 | |
862 | val _ = tab := Array.array(!size,(Key.null,def)) | |
863 | val _ = hashTab := Array.array(!size*2,nullBucket) | |
864 | val _ = hashFun := makeHashFun(!size,!width) | |
865 | ||
866 | fun addTo (i,kv as (key,_)) = | |
867 | let | |
868 | val idx = !hashFun key | |
869 | val _ = Array.update(!hashTab,idx,addToBucket((key,i),Array.sub(!hashTab,idx))) | |
870 | val _ = Array.update(!tab,i,kv) | |
871 | in () | |
872 | end | |
873 | in | |
874 | Array.appi addTo (oldTab,0,NONE) | |
875 | end | |
876 | ||
877 | (*--------------------------------------------------------------------*) | |
878 | (* lookup the key for an index of the dictionary. *) | |
879 | (*--------------------------------------------------------------------*) | |
880 | fun getKey({tab,count,...}:'a Dict,idx) = | |
881 | if !count>idx then #1(Array.sub(!tab,idx)) | |
882 | else raise NoSuchIndex | |
883 | ||
884 | (*--------------------------------------------------------------------*) | |
885 | (* map a Key to its index in the dictionary. if it is not in the *) | |
886 | (* dictionary yet, add a new entry with a new index. grow the table *) | |
887 | (* if there is no more free index in the dictionary. *) | |
888 | (*--------------------------------------------------------------------*) | |
889 | fun getIndex(dict as {tab,hashTab,hashFun,size,count,def,...}:'a Dict,key) = | |
890 | let | |
891 | val k = !hashFun key | |
892 | val bucket = Array.sub(!hashTab,k) | |
893 | in | |
894 | case searchBucket(key,bucket) | |
895 | of SOME idx => idx | |
896 | | NONE => let val idx = !count | |
897 | val (k',buck') = if !size>idx then (k,bucket) | |
898 | else let val _ = growDictionary dict | |
899 | val k' = !hashFun key | |
900 | val buck' = Array.sub(!hashTab,k') | |
901 | in (k',buck') | |
902 | end | |
903 | val _ = Array.update(!hashTab,k',addToBucket((key,idx),buck')) | |
904 | val _ = Array.update(!tab,idx,(key,def)) | |
905 | val _ = count := idx+1 | |
906 | in idx | |
907 | end | |
908 | end | |
909 | ||
910 | (*--------------------------------------------------------------------*) | |
911 | (* does a Key have an entry in a dictionary? *) | |
912 | (*--------------------------------------------------------------------*) | |
913 | fun hasIndex({hashTab,hashFun,...}:'a Dict,key) = | |
914 | let | |
915 | val idx = !hashFun key | |
916 | val bucket = Array.sub(!hashTab,idx) | |
917 | in | |
918 | searchBucket(key,bucket) | |
919 | end | |
920 | ||
921 | (*--------------------------------------------------------------------*) | |
922 | (* get the value stored for index idx *) | |
923 | (*--------------------------------------------------------------------*) | |
924 | fun getByIndex({tab,count,...}:'a Dict,idx) = | |
925 | if !count>idx then #2(Array.sub(!tab,idx)) | |
926 | else raise NoSuchIndex | |
927 | ||
928 | (*--------------------------------------------------------------------*) | |
929 | (* get the value stored for a key *) | |
930 | (*--------------------------------------------------------------------*) | |
931 | fun getByKey(dict,key) = | |
932 | getByIndex(dict,getIndex(dict,key)) | |
933 | ||
934 | (*--------------------------------------------------------------------*) | |
935 | (* enter a value for index idx. *) | |
936 | (*--------------------------------------------------------------------*) | |
937 | fun setByIndex({tab,count,...}:'a Dict,idx,a) = | |
938 | if !count>idx then let val (key,_) = Array.sub(!tab,idx) | |
939 | in Array.update(!tab,idx,(key,a)) | |
940 | end | |
941 | else raise NoSuchIndex | |
942 | ||
943 | (*--------------------------------------------------------------------*) | |
944 | (* enter a value for a key. *) | |
945 | (*--------------------------------------------------------------------*) | |
946 | fun setByKey(dict,key,v) = | |
947 | setByIndex(dict,getIndex(dict,key),v) | |
948 | ||
949 | (*--------------------------------------------------------------------*) | |
950 | (* extract the contents of the dictionary to an array. *) | |
951 | (*--------------------------------------------------------------------*) | |
952 | fun extractDict({count,tab,...}:'a Dict) = | |
953 | Array.tabulate(!count,fn i => Array.sub(!tab,i)) | |
954 | ||
955 | (*--------------------------------------------------------------------*) | |
956 | (* print the contents of the dictionary. *) | |
957 | (*--------------------------------------------------------------------*) | |
958 | fun printDict X2String ({desc,tab,count,...}:'a Dict) = | |
959 | (print (desc^" dictionary:\n"); | |
960 | Array.appi | |
961 | (fn (n,(key,value)) => | |
962 | print (" "^Int.toString n^": "^Key.toString key^" = "^X2String value^"\n")) | |
963 | (!tab,0,SOME (!count))) | |
964 | end | |
965 | (* stop of ../../Util/SymDict/dict.sml *) | |
966 | (* start of ../../Util/SymDict/symbolTable.sml *) | |
967 | ||
968 | ||
969 | ||
970 | ||
971 | ||
972 | ||
973 | (*--------------------------------------------------------------------------*) | |
974 | (* Functor: SymbolTable *) | |
975 | (* *) | |
976 | (* Exceptions raised by functions in this structure: *) | |
977 | (* getSymIndex : Key.InternalError *) | |
978 | (* getSymKey : NoSuchSymbol *) | |
979 | (* hasSymIndex : none *) | |
980 | (* makeSymTable : none *) | |
981 | (* nullSymTable : none *) | |
982 | (* printSymTable : none *) | |
983 | (* usedSymbols : none *) | |
984 | (*--------------------------------------------------------------------------*) | |
985 | (* A symbol table maps Keys to consecutive integers. *) | |
986 | (*--------------------------------------------------------------------------*) | |
987 | signature SymTable = | |
988 | sig | |
989 | type Key | |
990 | type SymTable | |
991 | ||
992 | exception NoSuchSymbol | |
993 | ||
994 | val nullSymTable : string -> SymTable | |
995 | val makeSymTable : string * int -> SymTable | |
996 | val clearSymTable : SymTable * int option -> unit | |
997 | ||
998 | val hasSymIndex : SymTable * Key -> int option | |
999 | val getSymIndex : SymTable * Key -> int | |
1000 | val getSymKey : SymTable * int -> Key | |
1001 | val usedSymbols : SymTable -> int | |
1002 | ||
1003 | val assignSymIndex : SymTable * Key * int -> unit | |
1004 | val reserveSymIndex : SymTable -> int | |
1005 | ||
1006 | val extractSymTable : SymTable -> Key vector | |
1007 | val printSymTable : SymTable -> unit | |
1008 | end | |
1009 | ||
1010 | functor SymTable (structure Key : Key) : SymTable = | |
1011 | struct | |
1012 | open UtilError UtilInt | |
1013 | ||
1014 | exception NoSuchSymbol | |
1015 | ||
1016 | type Key = Key.Key | |
1017 | ||
1018 | (*--------------------------------------------------------------------*) | |
1019 | (* a symbol table can have at most size MAX_WIDTH. This is because *) | |
1020 | (* arrays may at most have Array.maxLen elements. We only use powers *) | |
1021 | (* of two as sizes, so we are really only interested in the position *) | |
1022 | (* of maxLen's highest bit. That would be the maximal width for hash *) | |
1023 | (* tables, and thus we must decrease it by one for obtaining the max *) | |
1024 | (* table width. *) | |
1025 | (*--------------------------------------------------------------------*) | |
1026 | fun highestBit w = if w=0w0 then 0 else 1+highestBit(Word.>>(w,0w1)) | |
1027 | val MAX_WIDTH = highestBit (Word.fromInt Array.maxLen)-1 | |
1028 | ||
1029 | type Bucket = (Key * int) list | |
1030 | val nullBucket = nil : Bucket | |
1031 | ||
1032 | (*--------------------------------------------------------------------*) | |
1033 | (* buckets are sorted - though they are probably small. *) | |
1034 | (*--------------------------------------------------------------------*) | |
1035 | fun addToBucket (ni as (key,_),bucket) = | |
1036 | let | |
1037 | fun doit nil = [ni] | |
1038 | | doit (nis as (ni' as (key',_))::rest) = | |
1039 | case Key.compare (key',key) | |
1040 | of LESS => ni'::doit rest | |
1041 | | EQUAL => ni::rest | |
1042 | | GREATER => ni::nis | |
1043 | in | |
1044 | doit bucket | |
1045 | end | |
1046 | fun searchBucket (key,bucket) = | |
1047 | let | |
1048 | fun doit nil = NONE | |
1049 | | doit ((key',i)::rest) = | |
1050 | case Key.compare (key',key) | |
1051 | of LESS => doit rest | |
1052 | | EQUAL => SOME i | |
1053 | | GREATER => NONE | |
1054 | in | |
1055 | doit bucket | |
1056 | end | |
1057 | ||
1058 | (*--------------------------------------------------------------------*) | |
1059 | (* a symbol table consists of *) | |
1060 | (* - an array tab holding for each index its key *) | |
1061 | (* - a hash table, i.e. Bucket array, of double size than tab *) | |
1062 | (* - a hashFun mapping Key to the range of the hash table *) | |
1063 | (* - an integer width for computing table sizes *) | |
1064 | (* - an integer size wich is the size of the value table *) | |
1065 | (* - an integer count holding the next free index *) | |
1066 | (*--------------------------------------------------------------------*) | |
1067 | type SymTable = {desc : string, | |
1068 | tab : Key array ref, | |
1069 | hash : Bucket array ref, | |
1070 | hashFun : (Key -> int) ref, | |
1071 | width : int ref, (* bit width *) | |
1072 | size : int ref, (* tab size=2^width, hash size is double *) | |
1073 | count : int ref (* number of entries *) | |
1074 | } | |
1075 | ||
1076 | fun nullSymTable desc = {desc = desc, | |
1077 | tab = ref (Array.array(1,Key.null)), | |
1078 | hash = ref (Array.array(2,nullBucket)), | |
1079 | hashFun = ref (fn _ => 0), | |
1080 | count = ref 0, | |
1081 | size = ref 1, | |
1082 | width = ref 0} : SymTable | |
1083 | ||
1084 | (*--------------------------------------------------------------------*) | |
1085 | (* how many entries are in the symtable? *) | |
1086 | (*--------------------------------------------------------------------*) | |
1087 | fun usedSymbols ({count,...}:SymTable) = !count | |
1088 | ||
1089 | (*--------------------------------------------------------------------*) | |
1090 | (* what is the table load, i.e. percentage of number of entries to *) | |
1091 | (* hash table size = 100*count/(2*size) = 50*count/size. *) | |
1092 | (*--------------------------------------------------------------------*) | |
1093 | fun hashRatio({count,size,...}:SymTable) = 50 * !count div !size | |
1094 | handle Div => 100 | |
1095 | ||
1096 | (*--------------------------------------------------------------------*) | |
1097 | (* this is the hash function. Key.hash hashes data to arbitrary *) | |
1098 | (* words, that are mapped to the hash range by this function, where *) | |
1099 | (* mask is the bitmask corresponding to the size of the hash table: *) | |
1100 | (* 1. square the word produced by Key.hash *) | |
1101 | (* 2. take the width bits from the middle of the square, these are *) | |
1102 | (* the bit-places influenced by all input bit-places: *) | |
1103 | (* - shift to the right by half of the destination width *) | |
1104 | (* - mask out all bits to the left of destination *) | |
1105 | (* this is a simple strategy but experiences good results. *) | |
1106 | (*--------------------------------------------------------------------*) | |
1107 | fun square (x:word) = Word.*(x,x) | |
1108 | fun hashKey(half,mask) x = | |
1109 | Word.toInt(Word.andb(mask,Word.>>(square(Key.hash x),half))) | |
1110 | fun makeHashFun(size,width) = | |
1111 | let | |
1112 | val mask = Word.fromInt(2*size-1) | |
1113 | val half = Word.fromInt((width+1) div 2) | |
1114 | in | |
1115 | hashKey(half,mask) | |
1116 | end | |
1117 | ||
1118 | (*--------------------------------------------------------------------*) | |
1119 | (* create a new symtable for 2^w, but at least 2 and at most 2^m *) | |
1120 | (* entries, where m is the value of MAX_WIDTH. *) | |
1121 | (*--------------------------------------------------------------------*) | |
1122 | fun makeSymTable (desc,w) = | |
1123 | let | |
1124 | val width= Int.min(Int.max(1,w),MAX_WIDTH) | |
1125 | val size = Word.toInt(Word.<<(0w1,Word.fromInt(width-1))) | |
1126 | in {desc = desc, | |
1127 | tab = ref (Array.array(size,Key.null)), | |
1128 | hash = ref (Array.array(2*size,nullBucket)), | |
1129 | hashFun = ref (makeHashFun(size,width)), | |
1130 | width = ref width, | |
1131 | size = ref size, | |
1132 | count = ref 0} | |
1133 | end | |
1134 | ||
1135 | (*--------------------------------------------------------------------*) | |
1136 | (* clear a dictionary. If the 2nd arg is SOME w, use w for resizing. *) | |
1137 | (*--------------------------------------------------------------------*) | |
1138 | fun clearSymTable (symTab:SymTable,widthOpt) = | |
1139 | case widthOpt | |
1140 | of NONE => | |
1141 | let | |
1142 | val {tab=ref tab,hash=ref hash,size,count,...} = symTab | |
1143 | val _ = appInterval (fn i => Array.update(tab,i,Key.null)) (0,!count-1) | |
1144 | val _ = appInterval (fn i => Array.update(hash,i,nullBucket)) (0,!size*2-1) | |
1145 | in | |
1146 | count := 0 | |
1147 | end | |
1148 | | SOME w => | |
1149 | let | |
1150 | val {tab,hash,hashFun,width,size,count,...} = symTab | |
1151 | val newWidth = Int.min(Int.max(1,w),MAX_WIDTH) | |
1152 | val newSize = Word.toInt(Word.<<(0w1,Word.fromInt(newWidth-1))) | |
1153 | val _ = tab := (Array.array(newSize,Key.null)) | |
1154 | val _ = hash := (Array.array(2*newSize,nullBucket)) | |
1155 | val _ = hashFun := (makeHashFun(newSize,newWidth)) | |
1156 | val _ = width := newWidth | |
1157 | val _ = size := newSize | |
1158 | in | |
1159 | count := 0 | |
1160 | end | |
1161 | ||
1162 | (*--------------------------------------------------------------------*) | |
1163 | (* grow a symtable to the double size. raise InternalError if the *) | |
1164 | (* table already has maximal size. *) | |
1165 | (*--------------------------------------------------------------------*) | |
1166 | fun growTable ({desc,tab,hash,hashFun,width,size,count}:SymTable) = | |
1167 | let | |
1168 | val newWidth = if !width < MAX_WIDTH then !width+1 | |
1169 | else raise InternalError | |
1170 | ("SymTable","growTable", | |
1171 | String.concat ["growing the ",desc," symbol table ", | |
1172 | "exceeded the system maximum size of ", | |
1173 | Int.toString Array.maxLen," for arrays"]) | |
1174 | val newSize = !size*2 | |
1175 | ||
1176 | val oldTab = !tab | |
1177 | val newTab = Array.array(newSize,Key.null) | |
1178 | val newHash = Array.array(2*newSize,nullBucket) | |
1179 | val newHashFun = makeHashFun(newSize,newWidth) | |
1180 | ||
1181 | fun addToNew (inv as (i,key)) = | |
1182 | let | |
1183 | val idx = newHashFun key | |
1184 | val _ = Array.update(newHash,idx,addToBucket((key,i),Array.sub(newHash,idx))) | |
1185 | val _ = Array.update(newTab,i,key) | |
1186 | in () | |
1187 | end | |
1188 | val _ = Array.appi addToNew (!tab,0,NONE) | |
1189 | ||
1190 | val _ = tab := newTab | |
1191 | val _ = hash := newHash | |
1192 | val _ = size := newSize | |
1193 | val _ = width := newWidth | |
1194 | val _ = hashFun := newHashFun | |
1195 | in () | |
1196 | end | |
1197 | ||
1198 | (*--------------------------------------------------------------------*) | |
1199 | (* lookup the key for an index of the symbol table. *) | |
1200 | (*--------------------------------------------------------------------*) | |
1201 | fun getSymKey({tab,count,...}:SymTable,idx) = | |
1202 | if !count>idx then Array.sub(!tab,idx) | |
1203 | else raise NoSuchSymbol | |
1204 | ||
1205 | (*--------------------------------------------------------------------*) | |
1206 | (* map a Key to its index in the symbol table. if it is not in the *) | |
1207 | (* symbol table yet, add a new entry with a new index. grow the table *) | |
1208 | (* if there is no more free index in the table. *) | |
1209 | (*--------------------------------------------------------------------*) | |
1210 | fun getSymIndex(st as {tab,hash,hashFun,size,count,...}:SymTable,key) = | |
1211 | let | |
1212 | val idx = !hashFun key | |
1213 | val bucket = Array.sub(!hash,idx) | |
1214 | in | |
1215 | case searchBucket(key,bucket) | |
1216 | of SOME i => i | |
1217 | | NONE => let val i = !count | |
1218 | val (idx',buck') = if !size>i then (idx,bucket) | |
1219 | else let val _ = growTable st | |
1220 | val idx' = !hashFun key | |
1221 | val buck' = Array.sub(!hash,idx') | |
1222 | in (idx',buck') | |
1223 | end | |
1224 | val _ = Array.update(!hash,idx',addToBucket((key,i),buck')) | |
1225 | val _ = Array.update(!tab,i,key) | |
1226 | val _ = count := i+1 | |
1227 | in i | |
1228 | end | |
1229 | end | |
1230 | ||
1231 | (*--------------------------------------------------------------------*) | |
1232 | (* does a Key have an entry in a symbol table? *) | |
1233 | (*--------------------------------------------------------------------*) | |
1234 | fun hasSymIndex({hash,hashFun,...}:SymTable,key) = | |
1235 | let | |
1236 | val idx = !hashFun key | |
1237 | val buck = Array.sub(!hash,idx) | |
1238 | in | |
1239 | searchBucket(key,buck) | |
1240 | end | |
1241 | ||
1242 | (*--------------------------------------------------------------------*) | |
1243 | (* reserve an index for a (yet unknown) key. *) | |
1244 | (*--------------------------------------------------------------------*) | |
1245 | fun reserveSymIndex(st as {size,count=count as ref i,...}:SymTable) = | |
1246 | let | |
1247 | val _ = if !size>i then () else growTable st | |
1248 | val _ = count := i+1 | |
1249 | in i | |
1250 | end | |
1251 | ||
1252 | (*--------------------------------------------------------------------*) | |
1253 | (* assign an index to a (previously reserved) index. *) | |
1254 | (*--------------------------------------------------------------------*) | |
1255 | fun assignSymIndex(st as {count,hash,hashFun,tab,...}:SymTable,key,i) = | |
1256 | if !count<=i then raise NoSuchSymbol | |
1257 | else let val idx = !hashFun key | |
1258 | val buck = Array.sub(!hash,idx) | |
1259 | val newBuck = addToBucket((key,i),buck) | |
1260 | val _ = Array.update(!hash,idx,newBuck) | |
1261 | val _ = Array.update(!tab,i,key) | |
1262 | in () | |
1263 | end | |
1264 | ||
1265 | (*--------------------------------------------------------------------*) | |
1266 | (* extract the contents of a symbol table to a vector. *) | |
1267 | (*--------------------------------------------------------------------*) | |
1268 | fun extractSymTable({count,tab,...}:SymTable) = | |
1269 | Array.extract(!tab,0,SOME(!count)) | |
1270 | ||
1271 | (*--------------------------------------------------------------------*) | |
1272 | (* print the contents of the symbol table. *) | |
1273 | (*--------------------------------------------------------------------*) | |
1274 | fun printSymTable ({desc,tab,count,...}:SymTable) = | |
1275 | (print (desc^" table:\n"); | |
1276 | Array.appi | |
1277 | (fn (n,key) => | |
1278 | print (" "^Int.toString n^": "^Key.toString key^"\n")) | |
1279 | (!tab,0,SOME (!count))) | |
1280 | end | |
1281 | (* stop of ../../Util/SymDict/symbolTable.sml *) | |
1282 | (* start of ../../Util/SymDict/intListDict.sml *) | |
1283 | ||
1284 | ||
1285 | ||
1286 | ||
1287 | ||
1288 | ||
1289 | structure KeyIntList : Key = | |
1290 | struct | |
1291 | type Key = int list | |
1292 | ||
1293 | val null = nil | |
1294 | val hash = UtilHash.hashList Word.fromInt | |
1295 | val compare = UtilCompare.compareList Int.compare | |
1296 | val toString = UtilString.List2String Int.toString | |
1297 | end | |
1298 | ||
1299 | structure IntListDict = Dict (structure Key = KeyIntList) | |
1300 | structure IntListSymTab = SymTable (structure Key = KeyIntList) | |
1301 | ||
1302 | ||
1303 | (* stop of ../../Util/SymDict/intListDict.sml *) | |
1304 | (* start of ../../Util/SymDict/intDict.sml *) | |
1305 | ||
1306 | ||
1307 | ||
1308 | ||
1309 | ||
1310 | ||
1311 | ||
1312 | structure KeyInt : Key = | |
1313 | struct | |
1314 | type Key = int | |
1315 | ||
1316 | val null = 0 | |
1317 | val hash = Word.fromInt | |
1318 | val compare = Int.compare | |
1319 | val toString = Int.toString | |
1320 | end | |
1321 | ||
1322 | structure IntDict = Dict (structure Key = KeyInt) | |
1323 | structure IntSymTab = SymTable (structure Key = KeyInt) | |
1324 | ||
1325 | ||
1326 | (* stop of ../../Util/SymDict/intDict.sml *) | |
1327 | (* start of ../../Unicode/Chars/uniChar.sml *) | |
1328 | (*--------------------------------------------------------------------------*) | |
1329 | (* Structure: UniChar *) | |
1330 | (* *) | |
1331 | (* Depends on: *) | |
1332 | (* UtilString *) | |
1333 | (* *) | |
1334 | (* Exceptions raised by functions in this structure: *) | |
1335 | (*--------------------------------------------------------------------------*) | |
1336 | signature UniChar = | |
1337 | sig | |
1338 | structure Chars : WORD | |
1339 | ||
1340 | type Char = Chars.word | |
1341 | type Data = Char list | |
1342 | type Vector = Char vector | |
1343 | ||
1344 | val nullData : Data | |
1345 | val nullVector : Vector | |
1346 | ||
1347 | val hashChar : Char -> word | |
1348 | val hashData : Data -> word | |
1349 | val hashVector : Vector -> word | |
1350 | ||
1351 | val compareChar : Char * Char -> order | |
1352 | val compareData : Data * Data -> order | |
1353 | val compareVector : Vector * Vector -> order | |
1354 | ||
1355 | val char2Char : char -> Char | |
1356 | val Char2char : Char -> char | |
1357 | ||
1358 | val Char2Uni : Char -> string | |
1359 | val Char2String : Char -> string | |
1360 | ||
1361 | val String2Data : string -> Data | |
1362 | val Data2String : Data -> string | |
1363 | val Latin2String : Data -> string | |
1364 | ||
1365 | val Data2Vector : Data -> Vector | |
1366 | val Vector2Data : Vector -> Data | |
1367 | ||
1368 | val String2Vector : string -> Vector | |
1369 | val Vector2String : Vector -> string | |
1370 | ||
1371 | val quoteUni : Char -> string -> string | |
1372 | val quoteChar : Char -> Char -> string | |
1373 | val quoteData : Char -> Data -> string | |
1374 | val quoteVector : Char -> Vector -> string | |
1375 | end | |
1376 | ||
1377 | structure UniChar : UniChar = | |
1378 | struct | |
1379 | val O_VECTOR_PRINTLEN = 48 | |
1380 | ||
1381 | structure Chars = Word | |
1382 | ||
1383 | val _ = if Chars.wordSize > 21 then () | |
1384 | else let val str = ("UniChar: Chars.wordSize is too small.\n"^ | |
1385 | "Cannot compile on this system!\n" ) | |
1386 | val _ = print str | |
1387 | in raise Fail str | |
1388 | end | |
1389 | ||
1390 | type Char = Chars.word | |
1391 | type Data = Char list | |
1392 | ||
1393 | type CharInterval = Char * Char | |
1394 | type CharRange = CharInterval list | |
1395 | ||
1396 | type Vector = Char vector | |
1397 | ||
1398 | val nullChar = 0wx0:Char | |
1399 | val nullData = nil:Data | |
1400 | val nullVector = Vector.fromList nullData | |
1401 | ||
1402 | val hashChar = Word.fromLargeWord o Chars.toLargeWord | |
1403 | val hashData = UtilHash.hashList hashChar | |
1404 | val hashVector = UtilHash.hashVector hashChar | |
1405 | ||
1406 | val compareChar = Chars.compare | |
1407 | val compareData = UtilCompare.compareList compareChar | |
1408 | val compareVector = UtilCompare.compareVector compareChar | |
1409 | ||
1410 | val char2Char = Chars.fromLargeWord o Word8.toLargeWord o Byte.charToByte | |
1411 | val Char2char = Byte.byteToChar o Word8.fromLargeWord o Chars.toLargeWord | |
1412 | ||
1413 | fun Char2Uni c = | |
1414 | "U+"^UtilString.toUpperString(StringCvt.padLeft #"0" 4 (Chars.toString c)) | |
1415 | fun Char2String c = | |
1416 | case c | |
1417 | of 0wx9 => "\\t" | |
1418 | | 0wxA => "\\n" | |
1419 | | _ => if c<0wx100 then String.implode [Char2char c] | |
1420 | else Char2Uni c | |
1421 | ||
1422 | fun String2Data s = map char2Char (String.explode s) | |
1423 | fun Data2String cs = String.concat (map Char2String cs) | |
1424 | fun Latin2String cs = String.implode (map Char2char cs) | |
1425 | ||
1426 | val Data2Vector = Vector.fromList | |
1427 | fun String2Vector s = Vector.tabulate(String.size s,fn i => char2Char(String.sub(s,i))) | |
1428 | ||
1429 | fun Vector2Data vec = Vector.foldr (op ::) nil vec | |
1430 | fun Vector2String vec = | |
1431 | let | |
1432 | val maxlen = O_VECTOR_PRINTLEN | |
1433 | val len = Vector.length vec | |
1434 | in | |
1435 | if len<=maxlen orelse maxlen=0 | |
1436 | then Data2String (Vector2Data vec) | |
1437 | else let | |
1438 | val cs1 = Vector.foldri | |
1439 | (fn (_,c,cs) => c::cs) nil (vec,0,SOME (maxlen div 2)) | |
1440 | val cs2 = Vector.foldri | |
1441 | (fn (_,c,cs) => c::cs) nil (vec,len-3-maxlen div 2,NONE) | |
1442 | in Data2String cs1^"..."^Data2String cs2 | |
1443 | end | |
1444 | end | |
1445 | ||
1446 | fun quoteUni q s = let val sQ = Char2String q in sQ^s^sQ end | |
1447 | fun quoteChar q c = if c=0wx0 then "entity end" else quoteUni q (Char2String c) | |
1448 | fun quoteData q cs = quoteUni q (Data2String cs) | |
1449 | fun quoteVector q v = quoteUni q (Vector2String v) | |
1450 | end | |
1451 | ||
1452 | ||
1453 | (* stop of ../../Unicode/Chars/uniChar.sml *) | |
1454 | (* start of ../../Unicode/Chars/charVecDict.sml *) | |
1455 | structure KeyVector : Key = | |
1456 | struct | |
1457 | type Key = UniChar.Vector | |
1458 | ||
1459 | val null = UniChar.nullVector | |
1460 | val compare = UniChar.compareVector | |
1461 | val toString = UniChar.Vector2String | |
1462 | val hash = UniChar.hashVector | |
1463 | end | |
1464 | ||
1465 | structure VectorDict = Dict (structure Key = KeyVector) | |
1466 | (* stop of ../../Unicode/Chars/charVecDict.sml *) | |
1467 | (* start of ../../Util/SymDict/stringDict.sml *) | |
1468 | ||
1469 | ||
1470 | ||
1471 | ||
1472 | ||
1473 | ||
1474 | ||
1475 | ||
1476 | structure KeyString : Key = | |
1477 | struct | |
1478 | type Key = string | |
1479 | ||
1480 | val null = "" | |
1481 | val hash = UtilHash.hashString | |
1482 | val compare = String.compare | |
1483 | ||
1484 | fun toString str = str | |
1485 | end | |
1486 | ||
1487 | structure StringDict = Dict (structure Key = KeyString) | |
1488 | (* stop of ../../Util/SymDict/stringDict.sml *) | |
1489 | (* start of ../../Unicode/encoding.sml *) | |
1490 | ||
1491 | ||
1492 | signature Encoding = | |
1493 | sig | |
1494 | datatype Encoding = | |
1495 | NOENC | ASCII | EBCDIC | LATIN1 | |
1496 | | UCS4B | UCS4L | UCS4SB | UCS4SL | |
1497 | | UCS2B | UCS2L | UTF16B | UTF16L | |
1498 | | UTF8 | |
1499 | ||
1500 | val UCS2 : Encoding | |
1501 | val UCS4 : Encoding | |
1502 | val UTF16 : Encoding | |
1503 | ||
1504 | val encodingName : Encoding -> string | |
1505 | val isEncoding : string -> Encoding | |
1506 | val switchEncoding : Encoding * Encoding -> Encoding | |
1507 | end | |
1508 | ||
1509 | structure Encoding : Encoding = | |
1510 | struct | |
1511 | open StringDict | |
1512 | ||
1513 | datatype Encoding = | |
1514 | NOENC | ASCII | EBCDIC | LATIN1 | |
1515 | | UCS4B | UCS4L | UCS4SB | UCS4SL | |
1516 | | UCS2B | UCS2L | UTF16B | UTF16L | |
1517 | | UTF8 | |
1518 | ||
1519 | val UCS2 = UCS2B | |
1520 | val UCS4 = UCS4B | |
1521 | val UTF16 = UTF16B | |
1522 | ||
1523 | fun encodingName enc = | |
1524 | case enc | |
1525 | of NOENC => "NONE" | |
1526 | | ASCII => "ASCII" | |
1527 | | EBCDIC => "EBCDIC" | |
1528 | | LATIN1 => "ISO-8859-1" | |
1529 | | UCS2B => "UCS-2" | |
1530 | | UCS2L => "UCS-2" | |
1531 | | UCS4B => "UCS-4" | |
1532 | | UCS4L => "UCS-4" | |
1533 | | UCS4SB => "UCS-4" | |
1534 | | UCS4SL => "UCS-4" | |
1535 | | UTF8 => "UTF-8" | |
1536 | | UTF16B => "UTF-16" | |
1537 | | UTF16L => "UTF-16" | |
1538 | ||
1539 | val encDict = makeDict("encoding",6,NOENC) | |
1540 | val encAliases = | |
1541 | [(ASCII,["ANSI_X3.4-1968","ANSI_X3.4-1986","ASCII","US-ASCII","US", | |
1542 | "ISO646-US","ISO-IR-6","ISO_646.IRV:1991","IBM367","CP367"]), | |
1543 | (EBCDIC,["EBCDIC"]), | |
1544 | (LATIN1,["ISO_8859-1:1987","ISO-8859-1","ISO_8859-1", | |
1545 | "ISO-IR-100","CP819","IBM819","L1","LATIN1"]), | |
1546 | (UCS2,["UCS-2","ISO-10646-UCS-2"]), | |
1547 | (UCS4,["UCS-4","ISO-10646-UCS-4"]), | |
1548 | (UTF16,["UTF-16"]), | |
1549 | (UTF8,["UTF-8"]) | |
1550 | ] | |
1551 | val _ = app (fn (x,ys) => app (fn y => setByKey(encDict,y,x)) ys) encAliases | |
1552 | fun isEncoding name = getByKey(encDict,name) | |
1553 | ||
1554 | fun compatAscii new = | |
1555 | case new | |
1556 | of ASCII => new | |
1557 | | LATIN1 => new | |
1558 | | UTF8 => new | |
1559 | | _ => NOENC | |
1560 | fun compatUcs4 (old,new) = | |
1561 | if new=UCS4 then old else NOENC | |
1562 | ||
1563 | fun switchEncoding(old,new) = | |
1564 | case old | |
1565 | of NOENC => NOENC | |
1566 | | ASCII => compatAscii new | |
1567 | | EBCDIC => if new=EBCDIC then new else NOENC | |
1568 | | LATIN1 => compatAscii new | |
1569 | | UCS4B => compatUcs4(old,new) | |
1570 | | UCS4L => compatUcs4(old,new) | |
1571 | | UCS4SB => compatUcs4(old,new) | |
1572 | | UCS4SL => compatUcs4(old,new) | |
1573 | | UTF16B => if new=UTF16 then old else if new=UCS2 then UCS2B else NOENC | |
1574 | | UTF16L => if new=UTF16 then old else if new=UCS2 then UCS2L else NOENC | |
1575 | | UCS2B => if new=UCS2 then old else if new=UTF16 then UTF16B else NOENC | |
1576 | | UCS2L => if new=UCS2 then old else if new=UTF16 then UTF16L else NOENC | |
1577 | | UTF8 => compatAscii new | |
1578 | end | |
1579 | (* stop of ../../Unicode/encoding.sml *) | |
1580 | (* start of ../../Unicode/Encode/encodeBasic.sml *) | |
1581 | ||
1582 | ||
1583 | ||
1584 | ||
1585 | ||
1586 | ||
1587 | (*--------------------------------------------------------------------------*) | |
1588 | (* Structure: EncodeBasic *) | |
1589 | (* *) | |
1590 | (* Exceptions raised by functions in this structure: *) | |
1591 | (* closeFile : none *) | |
1592 | (* fileName : none *) | |
1593 | (* openFile : NoSuchFile *) | |
1594 | (* writeByte : Io *) | |
1595 | (*--------------------------------------------------------------------------*) | |
1596 | signature EncodeBasic = | |
1597 | sig | |
1598 | type File | |
1599 | ||
1600 | val stdOutFile : File | |
1601 | val closeFile : File -> unit | |
1602 | val fileName : File -> string | |
1603 | val openFile : string -> File | |
1604 | val writeByte : File * Word8.word -> File | |
1605 | end | |
1606 | ||
1607 | structure EncodeBasic : EncodeBasic = | |
1608 | struct | |
1609 | open UtilError | |
1610 | ||
1611 | type outstream = TextIO.outstream | |
1612 | val closeOut = TextIO.closeOut | |
1613 | val openOut = TextIO.openOut | |
1614 | val output1 = TextIO.output1 | |
1615 | val stdOut = TextIO.stdOut | |
1616 | ||
1617 | type File = string * outstream | |
1618 | ||
1619 | val stdOutFile = ("-",stdOut) | |
1620 | ||
1621 | fun closeFile(fname,s) = if fname="-" then () else closeOut s | |
1622 | fun fileName(fname,_) = if fname="-" then "<stdout>" else fname | |
1623 | fun openFile fname = | |
1624 | if fname = "-" then (fname,stdOut) | |
1625 | else (fname,openOut fname) | |
1626 | handle IO.Io {name,cause,...} => raise NoSuchFile(name,exnMessage cause) | |
1627 | fun writeByte (f as (_,s),b) = f before output1(s,chr(Word8.toInt b)) | |
1628 | end | |
1629 | (* stop of ../../Unicode/Encode/encodeBasic.sml *) | |
1630 | (* start of ../../Unicode/Encode/encodeError.sml *) | |
1631 | ||
1632 | ||
1633 | ||
1634 | ||
1635 | ||
1636 | ||
1637 | ||
1638 | signature EncodeError = | |
1639 | sig | |
1640 | datatype EncodeError = | |
1641 | ERR_ILLEGAL_CHAR of UniChar.Char * string | |
1642 | ||
1643 | val encodeMessage : EncodeError -> string list | |
1644 | ||
1645 | exception EncodeError of EncodeBasic.File * EncodeError | |
1646 | end | |
1647 | ||
1648 | structure EncodeError : EncodeError = | |
1649 | struct | |
1650 | open | |
1651 | UtilString | |
1652 | UniChar | |
1653 | ||
1654 | datatype EncodeError = | |
1655 | ERR_ILLEGAL_CHAR of UniChar.Char * string | |
1656 | ||
1657 | fun encodeMessage err = | |
1658 | case err | |
1659 | of ERR_ILLEGAL_CHAR(c,what) => [Char2Uni c,"is not",prependAnA what,"character"] | |
1660 | ||
1661 | exception EncodeError of EncodeBasic.File * EncodeError | |
1662 | end | |
1663 | (* stop of ../../Unicode/Encode/encodeError.sml *) | |
1664 | (* start of ../../Unicode/Encode/encodeMisc.sml *) | |
1665 | (* | |
1666 | require "basis.__word"; | |
1667 | require "basis.__word8"; | |
1668 | require "basis.__word8_vector"; | |
1669 | ||
1670 | require "chars"; | |
1671 | require "encodeBasic"; | |
1672 | require "encodeError"; | |
1673 | *) | |
1674 | signature EncodeMisc = | |
1675 | sig | |
1676 | val writeCharAscii : UniChar.Char * EncodeBasic.File -> EncodeBasic.File | |
1677 | val writeCharEbcdic : UniChar.Char * EncodeBasic.File -> EncodeBasic.File | |
1678 | val writeCharLatin1 : UniChar.Char * EncodeBasic.File -> EncodeBasic.File | |
1679 | val writeCharUcs4B : UniChar.Char * EncodeBasic.File -> EncodeBasic.File | |
1680 | val writeCharUcs4L : UniChar.Char * EncodeBasic.File -> EncodeBasic.File | |
1681 | val writeCharUcs4SB : UniChar.Char * EncodeBasic.File -> EncodeBasic.File | |
1682 | val writeCharUcs4SL : UniChar.Char * EncodeBasic.File -> EncodeBasic.File | |
1683 | val writeCharUtf8 : UniChar.Char * EncodeBasic.File -> EncodeBasic.File | |
1684 | val writeCharUtf16B : UniChar.Char * EncodeBasic.File -> EncodeBasic.File | |
1685 | val writeCharUtf16L : UniChar.Char * EncodeBasic.File -> EncodeBasic.File | |
1686 | val writeCharUcs2B : UniChar.Char * EncodeBasic.File -> EncodeBasic.File | |
1687 | val writeCharUcs2L : UniChar.Char * EncodeBasic.File -> EncodeBasic.File | |
1688 | ||
1689 | val validCharAscii : UniChar.Char -> bool | |
1690 | val validCharEbcdic : UniChar.Char -> bool | |
1691 | val validCharLatin1 : UniChar.Char -> bool | |
1692 | end | |
1693 | ||
1694 | structure EncodeMisc : EncodeMisc = | |
1695 | struct | |
1696 | open UniChar EncodeBasic EncodeError | |
1697 | ||
1698 | infix 8 >> | |
1699 | infix 7 && | |
1700 | infix 6 || | |
1701 | ||
1702 | val op && = Chars.andb | |
1703 | val op >> = Chars.>> | |
1704 | val op || = Word8.orb | |
1705 | ||
1706 | fun splitSurrogates (c : Char) = | |
1707 | (((c-0wx10000) >> 0w10)+0wxD800,c && 0wx3FF + 0wxDC00) | |
1708 | ||
1709 | fun Char2Byte c = Word8.fromLargeWord(Chars.toLargeWord c) | |
1710 | ||
1711 | (*---------------------------------------------------------------------*) | |
1712 | (* Ascii *) | |
1713 | (*---------------------------------------------------------------------*) | |
1714 | fun validCharAscii (c : Char) = c<0wx80 | |
1715 | fun writeCharAscii(c,f) = | |
1716 | if c<0wx80 then writeByte(f,Char2Byte c) | |
1717 | else raise EncodeError(f,ERR_ILLEGAL_CHAR(c,"ASCII")) | |
1718 | ||
1719 | (*---------------------------------------------------------------------*) | |
1720 | (* Ebcdic *) | |
1721 | (*---------------------------------------------------------------------*) | |
1722 | val latin2ebcdicTab = Word8Vector.fromList | |
1723 | [0wx00,0wx01,0wx02,0wx03,0wx37,0wx2D,0wx2E,0wx2F, | |
1724 | 0wx16,0wx05,0wx25,0wx0B,0wx0C,0wx0D,0wx0E,0wx0F, | |
1725 | 0wx10,0wx11,0wx12,0wx13,0wx3C,0wx3D,0wx32,0wx26, | |
1726 | 0wx18,0wx19,0wx3F,0wx27,0wx1C,0wx1D,0wx1E,0wx1F, | |
1727 | 0wx40,0wx4F,0wx7F,0wx7B,0wx5B,0wx6C,0wx50,0wx7D, | |
1728 | 0wx4D,0wx5D,0wx5C,0wx4E,0wx6B,0wx60,0wx4B,0wx61, | |
1729 | 0wxF0,0wxF1,0wxF2,0wxF3,0wxF4,0wxF5,0wxF6,0wxF7, | |
1730 | 0wxF8,0wxF9,0wx7A,0wx5E,0wx4C,0wx7E,0wx6E,0wx6F, | |
1731 | 0wx7C,0wxC1,0wxC2,0wxC3,0wxC4,0wxC5,0wxC6,0wxC7, | |
1732 | 0wxC8,0wxC9,0wxD1,0wxD2,0wxD3,0wxD4,0wxD5,0wxD6, | |
1733 | 0wxD7,0wxD8,0wxD9,0wxE2,0wxE3,0wxE4,0wxE5,0wxE6, | |
1734 | 0wxE7,0wxE8,0wxE9,0wx4A,0wxE0,0wx5A,0wx5F,0wx6D, | |
1735 | 0wx79,0wx81,0wx82,0wx83,0wx84,0wx85,0wx86,0wx87, | |
1736 | 0wx88,0wx89,0wx91,0wx92,0wx93,0wx94,0wx95,0wx96, | |
1737 | 0wx97,0wx98,0wx99,0wxA2,0wxA3,0wxA4,0wxA5,0wxA6, | |
1738 | 0wxA7,0wxA8,0wxA9,0wxC0,0wx6A,0wxD0,0wxA1,0wx07, | |
1739 | 0wx20,0wx21,0wx22,0wx23,0wx24,0wx15,0wx06,0wx17, | |
1740 | 0wx28,0wx29,0wx2A,0wx2B,0wx2C,0wx09,0wx0A,0wx1B, | |
1741 | 0wx30,0wx31,0wx1A,0wx33,0wx34,0wx35,0wx36,0wx08, | |
1742 | 0wx38,0wx39,0wx3A,0wx3B,0wx04,0wx14,0wx3E,0wxE1, | |
1743 | 0wx41,0wx42,0wx43,0wx44,0wx45,0wx46,0wx47,0wx48, | |
1744 | 0wx49,0wx51,0wx52,0wx53,0wx54,0wx55,0wx56,0wx57, | |
1745 | 0wx58,0wx59,0wx62,0wx63,0wx64,0wx65,0wx66,0wx67, | |
1746 | 0wx68,0wx69,0wx70,0wx71,0wx72,0wx73,0wx74,0wx75, | |
1747 | 0wx76,0wx77,0wx78,0wx80,0wx8A,0wx8B,0wx8C,0wx8D, | |
1748 | 0wx8E,0wx8F,0wx90,0wx9A,0wx9B,0wx9C,0wx9D,0wx9E, | |
1749 | 0wx9F,0wxA0,0wxAA,0wxAB,0wxAC,0wxAD,0wxAE,0wxAF, | |
1750 | 0wxB0,0wxB1,0wxB2,0wxB3,0wxB4,0wxB5,0wxB6,0wxB7, | |
1751 | 0wxB8,0wxB9,0wxBA,0wxBB,0wxBC,0wxBD,0wxBE,0wxBF, | |
1752 | 0wxCA,0wxCB,0wxCC,0wxCD,0wxCE,0wxCF,0wxDA,0wxDB, | |
1753 | 0wxDC,0wxDD,0wxDE,0wxDF,0wxEA,0wxEB,0wxEC,0wxED, | |
1754 | 0wxEE,0wxEF,0wxFA,0wxFB,0wxFC,0wxFD,0wxFE,0wxFF | |
1755 | ] | |
1756 | fun validCharEbcdic (c : Char) = c<0wx100 | |
1757 | fun writeCharEbcdic(c,f) = | |
1758 | if c<0wx100 then writeByte(f,Word8Vector.sub(latin2ebcdicTab,Chars.toInt c)) | |
1759 | else raise EncodeError(f,ERR_ILLEGAL_CHAR(c,"EBCDIC")) | |
1760 | ||
1761 | (*---------------------------------------------------------------------*) | |
1762 | (* Latin1 *) | |
1763 | (*---------------------------------------------------------------------*) | |
1764 | fun validCharLatin1 (c : Char) = c<0wx100 | |
1765 | fun writeCharLatin1(c,f) = | |
1766 | if c<0wx100 then writeByte(f,Char2Byte c) | |
1767 | else raise EncodeError(f,ERR_ILLEGAL_CHAR(c,"LATIN-1")) | |
1768 | ||
1769 | (*---------------------------------------------------------------------*) | |
1770 | (* UCS-4 *) | |
1771 | (*---------------------------------------------------------------------*) | |
1772 | fun ucs4Bytes c = (Char2Byte(c >> 0w24), | |
1773 | Char2Byte(c >> 0w16), | |
1774 | Char2Byte(c >> 0w8), | |
1775 | Char2Byte c) | |
1776 | fun writeCharUcs4 perm = | |
1777 | fn (c,f) => let val bytes = ucs4Bytes c | |
1778 | val (b1,b2,b3,b4) = perm bytes | |
1779 | val f1 = writeByte(f,b1) | |
1780 | val f2 = writeByte(f1,b2) | |
1781 | val f3 = writeByte(f2,b3) | |
1782 | val f4 = writeByte(f3,b4) | |
1783 | in f4 | |
1784 | end | |
1785 | fun permUcs4B x = x | |
1786 | fun permUcs4L (b1,b2,b3,b4) = (b4,b3,b2,b1) | |
1787 | fun permUcs4SB (b1,b2,b3,b4) = (b2,b1,b4,b3) | |
1788 | fun permUcs4SL (b1,b2,b3,b4) = (b3,b4,b1,b2) | |
1789 | ||
1790 | val writeCharUcs4B = writeCharUcs4 permUcs4B | |
1791 | val writeCharUcs4L = writeCharUcs4 permUcs4L | |
1792 | val writeCharUcs4SB = writeCharUcs4 permUcs4SB | |
1793 | val writeCharUcs4SL = writeCharUcs4 permUcs4SL | |
1794 | ||
1795 | (*---------------------------------------------------------------------*) | |
1796 | (* UTF-8 *) | |
1797 | (*---------------------------------------------------------------------*) | |
1798 | fun writeCharUtf8(c,f) = | |
1799 | if c<0wx80 then writeByte(f,Char2Byte c) | |
1800 | else if c<0wx800 | |
1801 | then let val f1 = writeByte(f,0wxC0 || Char2Byte(c >> 0w6)) | |
1802 | val f2 = writeByte(f1,0wx80 || Char2Byte(c && 0wx3F)) | |
1803 | in f2 | |
1804 | end | |
1805 | else if c<0wx10000 | |
1806 | then let val f1 = writeByte(f, 0wxE0 || Char2Byte(c >> 0w12)) | |
1807 | val f2 = writeByte(f1,0wx80 || Char2Byte((c >> 0w6) && 0wx3F)) | |
1808 | val f3 = writeByte(f2,0wx80 || Char2Byte(c && 0wx3F)) | |
1809 | in f3 | |
1810 | end | |
1811 | else if c<0wx200000 | |
1812 | then let val f1 = writeByte(f, 0wxF0 || Char2Byte(c >> 0w18)) | |
1813 | val f2 = writeByte(f1,0wx80 || Char2Byte((c >> 0w12) && 0wx3F)) | |
1814 | val f3 = writeByte(f2,0wx80 || Char2Byte((c >> 0w6) && 0wx3F)) | |
1815 | val f4 = writeByte(f3,0wx80 || Char2Byte(c && 0wx3F)) | |
1816 | in f4 | |
1817 | end | |
1818 | else if c<0wx4000000 | |
1819 | then let val f1 = writeByte(f, 0wxF8 || Char2Byte(c >> 0w24)) | |
1820 | val f2 = writeByte(f1,0wx80 || Char2Byte((c >> 0w18) && 0wx3F)) | |
1821 | val f3 = writeByte(f2,0wx80 || Char2Byte((c >> 0w12) && 0wx3F)) | |
1822 | val f4 = writeByte(f3,0wx80 || Char2Byte((c >> 0w6) && 0wx3F)) | |
1823 | val f5 = writeByte(f4,0wx80 || Char2Byte(c && 0wx3F)) | |
1824 | in f5 | |
1825 | end | |
1826 | else let val f1 = writeByte(f, 0wxFC || Char2Byte(c >> 0w30)) | |
1827 | val f2 = writeByte(f1,0wx80 || Char2Byte((c >> 0w24) && 0wx3F)) | |
1828 | val f3 = writeByte(f2,0wx80 || Char2Byte((c >> 0w18) && 0wx3F)) | |
1829 | val f4 = writeByte(f3,0wx80 || Char2Byte((c >> 0w12) && 0wx3F)) | |
1830 | val f5 = writeByte(f4,0wx80 || Char2Byte((c >> 0w6) && 0wx3F)) | |
1831 | val f6 = writeByte(f5,0wx80 || Char2Byte(c && 0wx3F)) | |
1832 | in f6 | |
1833 | end | |
1834 | ||
1835 | (*---------------------------------------------------------------------*) | |
1836 | (* UTF-16 *) | |
1837 | (*---------------------------------------------------------------------*) | |
1838 | fun oneUtf16 isL (c,f) = | |
1839 | let val (b1,b2) = (Char2Byte(c >> 0w8),Char2Byte c) | |
1840 | in if isL then writeByte(writeByte(f,b2),b1) | |
1841 | else writeByte(writeByte(f,b1),b2) | |
1842 | end | |
1843 | fun writeCharUtf16 isL = | |
1844 | fn (c,f) => | |
1845 | if c<0wx10000 then oneUtf16 isL (c,f) | |
1846 | else let val (hi,lo) = splitSurrogates c | |
1847 | val f1 = oneUtf16 isL (hi,f) | |
1848 | val f2 = oneUtf16 isL (lo,f1) | |
1849 | in f2 | |
1850 | end | |
1851 | val writeCharUtf16B = writeCharUtf16 false | |
1852 | val writeCharUtf16L = writeCharUtf16 true | |
1853 | ||
1854 | (*---------------------------------------------------------------------*) | |
1855 | (* UCS-2 *) | |
1856 | (*---------------------------------------------------------------------*) | |
1857 | fun writeCharUcs2 isL = | |
1858 | fn (c,f) => | |
1859 | if c<0wx10000 | |
1860 | then let val (b1,b2) = (Char2Byte(c >> 0w8),Char2Byte c) | |
1861 | in if isL then writeByte(writeByte(f,b2),b1) | |
1862 | else writeByte(writeByte(f,b1),b2) | |
1863 | end | |
1864 | else raise EncodeError(f,ERR_ILLEGAL_CHAR(c,"UCS-2")) | |
1865 | ||
1866 | val writeCharUcs2B = writeCharUcs2 false | |
1867 | val writeCharUcs2L = writeCharUcs2 true | |
1868 | ||
1869 | end | |
1870 | (* stop of ../../Unicode/Encode/encodeMisc.sml *) | |
1871 | (* start of ../../Unicode/Encode/encode.sml *) | |
1872 | ||
1873 | ||
1874 | ||
1875 | ||
1876 | ||
1877 | ||
1878 | ||
1879 | ||
1880 | ||
1881 | ||
1882 | signature Encode = | |
1883 | sig | |
1884 | include EncodeError | |
1885 | ||
1886 | type File | |
1887 | type EncFile | |
1888 | ||
1889 | val encNoFile : EncFile | |
1890 | val encStdOut : EncFile | |
1891 | val encOpenFile : string * Encoding.Encoding * string -> EncFile | |
1892 | val encCloseFile : EncFile -> unit | |
1893 | val encAdapt : EncFile * File -> EncFile | |
1894 | ||
1895 | val encPutChar : EncFile * UniChar.Char -> EncFile | |
1896 | val encValidChar : EncFile * UniChar.Char -> bool | |
1897 | end | |
1898 | ||
1899 | structure Encode : Encode = | |
1900 | struct | |
1901 | open | |
1902 | Encoding UtilError | |
1903 | EncodeBasic EncodeError EncodeMisc | |
1904 | ||
1905 | type EncFile = Encoding * File | |
1906 | ||
1907 | val encNoFile = (NOENC,stdOutFile) | |
1908 | val encStdOut = (LATIN1,stdOutFile) | |
1909 | ||
1910 | fun encAdapt((enc,_),f) = (enc,f) | |
1911 | ||
1912 | fun encValidChar((enc,_),c) = | |
1913 | case enc | |
1914 | of ASCII => validCharAscii c | |
1915 | | EBCDIC => validCharEbcdic c | |
1916 | | LATIN1 => validCharLatin1 c | |
1917 | | _ => true | |
1918 | ||
1919 | fun encPutChar((enc,f),c) = | |
1920 | let val f1 = | |
1921 | case enc | |
1922 | of NOENC => f | |
1923 | | ASCII => (writeCharAscii(c,f)) | |
1924 | | EBCDIC => (writeCharEbcdic(c,f)) | |
1925 | | LATIN1 => (writeCharLatin1(c,f)) | |
1926 | | UCS2B => (writeCharUcs2B(c,f)) | |
1927 | | UCS2L => (writeCharUcs2L(c,f)) | |
1928 | | UCS4B => (writeCharUcs4B(c,f)) | |
1929 | | UCS4L => (writeCharUcs4L(c,f)) | |
1930 | | UCS4SB => (writeCharUcs4SB(c,f)) | |
1931 | | UCS4SL => (writeCharUcs4SL(c,f)) | |
1932 | | UTF8 => (writeCharUtf8(c,f)) | |
1933 | | UTF16B => (writeCharUtf16B(c,f)) | |
1934 | | UTF16L => (writeCharUtf16L(c,f)) | |
1935 | in (enc,f1) | |
1936 | end | |
1937 | ||
1938 | fun encCloseFile(_,f) = closeFile f | |
1939 | ||
1940 | fun encOpenFile (fname,enc,name) = | |
1941 | let | |
1942 | val outEnc = | |
1943 | case enc | |
1944 | of NOENC => | |
1945 | (case isEncoding name | |
1946 | of NOENC => raise NoSuchFile(fname,"Unsupported encoding \""^name^"\"") | |
1947 | | enc => enc) | |
1948 | | enc => enc | |
1949 | val f = openFile fname | |
1950 | val f1 = case outEnc | |
1951 | of UTF16B => writeByte(writeByte(f,0wxFE),0wxFF) | |
1952 | | UTF16L => writeByte(writeByte(f,0wxFF),0wxFE) | |
1953 | | _ => f | |
1954 | in (outEnc,f1) | |
1955 | end | |
1956 | end | |
1957 | ||
1958 | (* stop of ../../Unicode/Encode/encode.sml *) | |
1959 | (* start of nullHard.sml *) | |
1960 | ||
1961 | ||
1962 | ||
1963 | ||
1964 | ||
1965 | ||
1966 | ||
1967 | ||
1968 | ||
1969 | ||
1970 | ||
1971 | ||
1972 | ||
1973 | ||
1974 | ||
1975 | ||
1976 | ||
1977 | ||
1978 | ||
1979 | ||
1980 | ||
1981 | (* | |
1982 | structure NullHard = | |
1983 | struct | |
1984 | fun parseNull uri = NullParse.parseDocument uri NONE NullHooks.nullStart | |
1985 | ||
1986 | open | |
1987 | NullCatOptions NullOptions Options NullParserOptions Uri | |
1988 | ||
1989 | val usage = List.concat [parserUsage,[("","")],catalogUsage,[("","")],nullUsage] | |
1990 | ||
1991 | exception Exit of OS.Process.status | |
1992 | ||
1993 | fun null(prog,args) = | |
1994 | let | |
1995 | val prog = "fxp" | |
1996 | val hadError = ref false | |
1997 | ||
1998 | fun optError msg = | |
1999 | let val _ = TextIO.output(TextIO.stdErr,msg^".\n") | |
2000 | in hadError := true | |
2001 | end | |
2002 | fun exitError msg = | |
2003 | let val _ = TextIO.output(TextIO.stdErr,msg^".\n") | |
2004 | in raise Exit OS.Process.failure | |
2005 | end | |
2006 | fun exitHelp prog = | |
2007 | let val _ = printUsage TextIO.stdOut prog usage | |
2008 | in raise Exit OS.Process.success | |
2009 | end | |
2010 | fun exitVersion prog = | |
2011 | let val _ = app print [prog," version ",Version.FXP_VERSION,"\n"] | |
2012 | in raise Exit OS.Process.success | |
2013 | end | |
2014 | ||
2015 | fun summOpt prog = "For a summary of options type "^prog^" --help" | |
2016 | fun noFile(f,cause) = "can't open file '"^f^"': "^exnMessage cause | |
2017 | ||
2018 | val opts = parseOptions args | |
2019 | val _ = setParserDefaults() | |
2020 | val opts1 = setParserOptions (opts,optError) | |
2021 | val _ = setCatalogDefaults() | |
2022 | val opts2 = setCatalogOptions (opts1,optError) | |
2023 | val _ = setNullDefaults() | |
2024 | val (vers,help,err,file) = setNullOptions (opts2,optError) | |
2025 | val _ = if !hadError then exitError (summOpt prog) else () | |
2026 | val _ = if vers then exitVersion prog else () | |
2027 | val _ = if help then exitHelp prog else () | |
2028 | val _ = case err | |
2029 | of SOME "-" => O_ERROR_DEVICE := TextIO.stdErr | |
2030 | | SOME f => (O_ERROR_DEVICE := TextIO.openOut f | |
2031 | handle IO.Io {cause,...} => exitError(noFile(f,cause))) | |
2032 | | NONE => () | |
2033 | val f = valOf file handle Option => "-" | |
2034 | val uri = if f="-" then NONE else SOME(String2Uri f) | |
2035 | val status = parseNull uri | |
2036 | val _ = if isSome err then TextIO.closeOut (!O_ERROR_DEVICE) else () | |
2037 | in status | |
2038 | end | |
2039 | handle Exit status => status | |
2040 | | exn => | |
2041 | let val _ = TextIO.output | |
2042 | (TextIO.stdErr,prog^": Unexpected exception: "^exnMessage exn^".\n") | |
2043 | in OS.Process.failure | |
2044 | end | |
2045 | end | |
2046 | *) | |
2047 | structure NullHard = struct end | |
2048 | (* stop of nullHard.sml *) | |
2049 | (* start of ../../Util/options.sml *) | |
2050 | signature Options= | |
2051 | sig | |
2052 | datatype Option = | |
2053 | OPT_LONG of string * string option | |
2054 | | OPT_SHORT of char list | |
2055 | | OPT_NEG of char list | |
2056 | | OPT_NOOPT | |
2057 | | OPT_STRING of string | |
2058 | val parseOptions : string list -> Option list | |
2059 | ||
2060 | datatype UsageItem = | |
2061 | U_SEP | |
2062 | | U_TITLE of string | |
2063 | | U_ITEM of string list * string | |
2064 | type Usage = UsageItem list | |
2065 | val printUsage : TextIO.outstream -> string -> Usage -> unit | |
2066 | end | |
2067 | ||
2068 | structure Options : Options = | |
2069 | struct | |
2070 | exception BadOption of string | |
2071 | ||
2072 | datatype Option = | |
2073 | OPT_LONG of string * string option | |
2074 | | OPT_SHORT of char list | |
2075 | | OPT_NEG of char list | |
2076 | | OPT_NOOPT | |
2077 | | OPT_STRING of string | |
2078 | ||
2079 | datatype UsageItem = | |
2080 | U_SEP | |
2081 | | U_TITLE of string | |
2082 | | U_ITEM of string list * string | |
2083 | type Usage = UsageItem list | |
2084 | ||
2085 | fun parseOptions ss = | |
2086 | let | |
2087 | fun doOne opt = | |
2088 | if String.isPrefix "--" opt | |
2089 | then let val opt1 = Substring.extract(opt,2,NONE) | |
2090 | val (key0,opt2) = Substring.splitl (fn c => #"="<>c) opt1 | |
2091 | val key = if Substring.isEmpty key0 then raise BadOption opt | |
2092 | else Substring.string key0 | |
2093 | val valOpt = if Substring.isPrefix "=" opt2 | |
2094 | then let val val0 = Substring.triml 1 opt2 | |
2095 | in if Substring.isEmpty val0 | |
2096 | then raise BadOption opt | |
2097 | else SOME(Substring.string val0) | |
2098 | end | |
2099 | else NONE | |
2100 | in OPT_LONG(key,valOpt) | |
2101 | end | |
2102 | handle BadOption s => if opt="--" then OPT_NOOPT else OPT_STRING opt | |
2103 | else if String.isPrefix "-" opt | |
2104 | then let val chars = tl(String.explode opt) | |
2105 | (* val _ = app (fn c => if Char.isAlphaNum c then () | |
2106 | else raise BadOption opt) chars *) | |
2107 | in case chars | |
2108 | of nil => OPT_STRING opt | |
2109 | | #"n"::(cs as _::_) => OPT_NEG cs | |
2110 | | _ => OPT_SHORT chars | |
2111 | end | |
2112 | handle BadOption s => OPT_STRING opt | |
2113 | else OPT_STRING opt | |
2114 | ||
2115 | fun doAll nil = nil | |
2116 | | doAll (s::ss) = let val opt = doOne s | |
2117 | in case opt | |
2118 | of OPT_NOOPT => opt::map OPT_STRING ss | |
2119 | | _ => opt::doAll ss | |
2120 | end | |
2121 | in doAll ss | |
2122 | end | |
2123 | ||
2124 | fun printUsage stream prog usage = | |
2125 | let | |
2126 | val KEY_WIDTH = 30 | |
2127 | val LINE_WIDTH = 80 | |
2128 | val EMPTY_KEY = UtilString.nBlanks KEY_WIDTH | |
2129 | fun appendKeys col nil = if col>KEY_WIDTH then "\n"^EMPTY_KEY | |
2130 | else UtilString.nBlanks (KEY_WIDTH-col) | |
2131 | | appendKeys col [key] = key^" "^appendKeys (col+1+String.size key) nil | |
2132 | | appendKeys col (key::keys) = let val col1 = col+2+String.size key | |
2133 | in if col1>KEY_WIDTH | |
2134 | then key^",\n"^appendKeys 0 keys | |
2135 | else key^", "^appendKeys col1 keys | |
2136 | end | |
2137 | fun makeKey keylist = appendKeys 0 keylist | |
2138 | val makeText = UtilString.breakLines(LINE_WIDTH-KEY_WIDTH) | |
2139 | fun format (keylist,text) = | |
2140 | let val key = makeKey keylist | |
2141 | in case makeText text | |
2142 | of nil => [key] | |
2143 | | line::lines => key^line::map (fn line => EMPTY_KEY^line) lines | |
2144 | end | |
2145 | val _ = app (fn x => TextIO.output(stream,x)) | |
2146 | ["Usage: ",prog," [option ...] file\n","where option is one of:\n\n"] | |
2147 | val _ = app (fn item => app (fn x => TextIO.output(stream,x^"\n")) | |
2148 | (case item | |
2149 | of U_SEP => [""] | |
2150 | | U_TITLE txt => ["",txt] | |
2151 | | U_ITEM option => format option)) usage | |
2152 | in () | |
2153 | end | |
2154 | end | |
2155 | (* stop of ../../Util/options.sml *) | |
2156 | (* start of ../../config.sml *) | |
2157 | structure Config = | |
2158 | struct | |
2159 | (*---------------------------------------------------------------------*) | |
2160 | (* The OS command for retrieving a URI from the internet and storing *) | |
2161 | (* it in a local file, where *) | |
2162 | (* %1 is replaced by the URI. *) | |
2163 | (* %2 is replaced by the local filename. *) | |
2164 | (* It is recommended that the command exits with failure in case the *) | |
2165 | (* URI cannot be retrieved. If the command generates a HTML error *) | |
2166 | (* message instead (like, e.g., lynx), this HTML file is considered *) | |
2167 | (* to be XML and will probably cause a mess of parsing errors. If you *) | |
2168 | (* don't need URI retrieval, use "exit 1" which always fails. *) | |
2169 | (* Sensible values are, e.g.: *) | |
2170 | (* val retrieveCommand = "wget -qO %2 %1" *) | |
2171 | (* val retrieveCommand = "got_it -o %2 %1" *) | |
2172 | (* val retrieveCommand = "urlget -s -o %2 %1" *) | |
2173 | (*---------------------------------------------------------------------*) | |
2174 | val retrieveCommand = "wget -qO %2 %1" | |
2175 | end | |
2176 | (* stop of ../../config.sml *) | |
2177 | (* start of ../../Unicode/Chars/charClasses.sml *) | |
2178 | (*--------------------------------------------------------------------------*) | |
2179 | (* Structure: CharClasses *) | |
2180 | (* *) | |
2181 | (* Notes: *) | |
2182 | (* This implementation uses the UNSAFE array operations, and does NO *) | |
2183 | (* range checks. This is for efficiency reasons. *) | |
2184 | (* If class=makeCharClass(lo,hi) then a filed of size hi-lo+1 is allo- *) | |
2185 | (* cated. In order to lookup a character, first make sure it in [lo..hi], *) | |
2186 | (* then subtract lo before calling inCharClass! *) | |
2187 | (* The same holds for addChar. *) | |
2188 | (* *) | |
2189 | (* Depends on: *) | |
2190 | (* UniChar *) | |
2191 | (* UtilInt *) | |
2192 | (* *) | |
2193 | (* Exceptions raised by functions in this structure: *) | |
2194 | (* addChar : none *) | |
2195 | (* addCharClass : none *) | |
2196 | (* inCharClass : none *) | |
2197 | (* makeCharClass : none *) | |
2198 | (*--------------------------------------------------------------------------*) | |
2199 | signature CharClasses = | |
2200 | sig | |
2201 | type CharClass | |
2202 | type MutableClass | |
2203 | type CharInterval = UniChar.Char * UniChar.Char | |
2204 | type CharRange = CharInterval list | |
2205 | ||
2206 | val initialize : CharInterval -> MutableClass | |
2207 | val finalize : MutableClass -> CharClass | |
2208 | ||
2209 | val addChar : MutableClass * UniChar.Char * UniChar.Char * UniChar.Char -> unit | |
2210 | val addCharRange : MutableClass * UniChar.Char * UniChar.Char * CharRange -> CharRange | |
2211 | ||
2212 | val inCharClass : UniChar.Char * CharClass -> bool | |
2213 | end | |
2214 | ||
2215 | structure CharClasses : CharClasses = | |
2216 | struct | |
2217 | open UniChar | |
2218 | ||
2219 | type CharInterval = Char * Char | |
2220 | type CharRange = CharInterval list | |
2221 | ||
2222 | val Char2Word = Word.fromLargeWord o Chars.toLargeWord | |
2223 | ||
2224 | (*--------------------------------------------------------------------*) | |
2225 | (* helpers *) | |
2226 | (*--------------------------------------------------------------------*) | |
2227 | infix 5 >> >>> <<< | |
2228 | infix 6 || ||| | |
2229 | infix 6 -- | |
2230 | infix 7 & && &&& | |
2231 | val op >> = Chars.>> | |
2232 | val op -- = Chars.- | |
2233 | val op || = Chars.orb | |
2234 | val op && = Chars.andb | |
2235 | val op >>> = Word32.>> | |
2236 | val op <<< = Word32.<< | |
2237 | val op &&& = Word32.andb | |
2238 | val op ||| = Word32.orb | |
2239 | val op & = Word.andb | |
2240 | ||
2241 | val max32 = Word32.notb 0wx0 | |
2242 | ||
2243 | (*--------------------------------------------------------------------*) | |
2244 | (* a char class is an array of words, interpreted as bitvectors. *) | |
2245 | (*--------------------------------------------------------------------*) | |
2246 | type MutableClass = Word32.word array | |
2247 | type CharClass = Word32.word vector | |
2248 | ||
2249 | (*--------------------------------------------------------------------*) | |
2250 | (* each word in a char class holds 32 entries. Thus the for a char c *) | |
2251 | (* is c div 32 == c >> 5. The bitmask is a word of zeros, only the *) | |
2252 | (* significant bit for c, i.e. the (c && 31==0x1F)th bit set to one. *) | |
2253 | (*--------------------------------------------------------------------*) | |
2254 | fun indexMask c = let val idx = Chars.toInt(c>>0w5) | |
2255 | val mask = 0wx1 <<< Char2Word c & 0w31 | |
2256 | in (idx,mask) | |
2257 | end | |
2258 | ||
2259 | (*--------------------------------------------------------------------*) | |
2260 | (* generate index and mask, then lookup. *) | |
2261 | (*--------------------------------------------------------------------*) | |
2262 | fun inCharClass(c,vec) = let val (idx,mask) = indexMask c | |
2263 | in mask &&& Vector.sub(vec,idx) <> 0wx0 | |
2264 | end | |
2265 | ||
2266 | (*--------------------------------------------------------------------*) | |
2267 | (* generate a CharClass large enough to hold (max-min+1) characters. *) | |
2268 | (*--------------------------------------------------------------------*) | |
2269 | fun initialize(min,max) = | |
2270 | Array.array((Chars.toInt max-Chars.toInt min+1) div 32+1,0wx0):MutableClass | |
2271 | fun finalize arr = Array.extract(arr,0,NONE) | |
2272 | ||
2273 | (*--------------------------------------------------------------------*) | |
2274 | (* add a single character to a CharClass. *) | |
2275 | (*--------------------------------------------------------------------*) | |
2276 | fun addChar(cls,min,max,c) = | |
2277 | let | |
2278 | val (idx,new) = indexMask c | |
2279 | val old = Array.sub(cls,idx) | |
2280 | in | |
2281 | Array.update(cls,idx,old|||new) | |
2282 | end | |
2283 | ||
2284 | (*--------------------------------------------------------------------*) | |
2285 | (* add a full range of characters to a CharClass. *) | |
2286 | (* this is the only function that computes the offset before access *) | |
2287 | (* to the array. *) | |
2288 | (*--------------------------------------------------------------------*) | |
2289 | fun addCharRange(cls,min,max,range) = | |
2290 | let | |
2291 | fun doOne (lo,hi) = | |
2292 | let | |
2293 | val (l,h) = (lo-min,hi-min) | |
2294 | val (idxL,idxH) = ((Chars.toInt l) div 32,(Chars.toInt h) div 32) | |
2295 | val (bitL,bitH) = (Char2Word l & 0w31,Char2Word h & 0w31) | |
2296 | in | |
2297 | if idxL=idxH then | |
2298 | let | |
2299 | val new = (max32>>>(0w31-bitH+bitL))<<<bitL | |
2300 | val old = Array.sub(cls,idxL) | |
2301 | val _ = Array.update(cls,idxL,old|||new) | |
2302 | in () | |
2303 | end | |
2304 | else if idxL<idxH then | |
2305 | let | |
2306 | val newL = max32<<<bitL | |
2307 | val newH = max32>>>(0w31-bitH) | |
2308 | val oldL = Array.sub(cls,idxL) | |
2309 | val oldH = Array.sub(cls,idxH) | |
2310 | val _ = Array.update(cls,idxL,oldL|||newL) | |
2311 | val _ = Array.update(cls,idxH,oldH|||newH) | |
2312 | val _ = UtilInt.appInterval (fn i => Array.update(cls,i,max32)) | |
2313 | (idxL+1,idxH-1) | |
2314 | in () | |
2315 | end | |
2316 | else () | |
2317 | end | |
2318 | fun doAll nil = nil | |
2319 | | doAll ((lh as (lo,hi))::lhs) = | |
2320 | if hi<lo then doAll lhs | |
2321 | else if hi<min then doAll lhs | |
2322 | else if lo>max then lh::doAll lhs | |
2323 | else if lo<min andalso hi<=max | |
2324 | then (doOne(min,hi); doAll lhs) | |
2325 | else if lo>=min andalso hi<=max | |
2326 | then (doOne lh; doAll lhs) | |
2327 | else if lo>=min andalso hi>max | |
2328 | then (doOne(lo,max); (max+0w1,hi)::lhs) | |
2329 | else (doOne(min,max); (max+0w1,hi)::lhs) | |
2330 | val _ = doAll range | |
2331 | in | |
2332 | doAll range | |
2333 | end | |
2334 | end | |
2335 | ||
2336 | (* stop of ../../Unicode/Chars/charClasses.sml *) | |
2337 | (* start of ../../Unicode/Chars/uniRanges.sml *) | |
2338 | ||
2339 | ||
2340 | ||
2341 | ||
2342 | structure UniRanges = | |
2343 | struct | |
2344 | val digitRange = [(0wx0030,0wx0039), | |
2345 | (0wx0660,0wx0669), | |
2346 | (0wx06F0,0wx06F9), | |
2347 | (0wx0966,0wx096F), | |
2348 | (0wx09E6,0wx09EF), | |
2349 | (0wx0A66,0wx0A6F), | |
2350 | (0wx0AE6,0wx0AEF), | |
2351 | (0wx0B66,0wx0B6F), | |
2352 | (0wx0BE7,0wx0BEF), | |
2353 | (0wx0C66,0wx0C6F), | |
2354 | (0wx0CE6,0wx0CEF), | |
2355 | (0wx0D66,0wx0D6F), | |
2356 | (0wx0E50,0wx0E59), | |
2357 | (0wx0ED0,0wx0ED9), | |
2358 | (0wx0F20,0wx0F29) | |
2359 | ] : CharClasses.CharRange | |
2360 | ||
2361 | val digitRange09 = [(0wx0030,0wx0039), | |
2362 | (0wx0660,0wx0669), | |
2363 | (0wx06F0,0wx06F9), | |
2364 | (0wx0E50,0wx0E59), | |
2365 | (0wx0ED0,0wx0ED9), | |
2366 | (0wx0F20,0wx0F29) | |
2367 | ] : CharClasses.CharRange | |
2368 | ||
2369 | val digitRange6F = [(0wx0966,0wx096F), | |
2370 | (0wx09E6,0wx09EF), | |
2371 | (0wx0A66,0wx0A6F), | |
2372 | (0wx0AE6,0wx0AEF), | |
2373 | (0wx0B66,0wx0B6F), | |
2374 | (0wx0BE7,0wx0BEF), | |
2375 | (0wx0C66,0wx0C6F), | |
2376 | (0wx0CE6,0wx0CEF), | |
2377 | (0wx0D66,0wx0D6F) | |
2378 | ] : CharClasses.CharRange | |
2379 | ||
2380 | val baseRange = [(0wx0041,0wx005A), | |
2381 | (0wx0061,0wx007A), | |
2382 | (0wx00C0,0wx00D6), | |
2383 | (0wx00D8,0wx00F6), | |
2384 | (0wx00F8,0wx00FF), | |
2385 | (0wx0100,0wx0131), | |
2386 | (0wx0134,0wx013E), | |
2387 | (0wx0141,0wx0148), | |
2388 | (0wx014A,0wx017E), | |
2389 | (0wx0180,0wx01C3), | |
2390 | (0wx01CD,0wx01F0), | |
2391 | (0wx01F4,0wx01F5), | |
2392 | (0wx01FA,0wx0217), | |
2393 | (0wx0250,0wx02A8), | |
2394 | (0wx02BB,0wx02C1), | |
2395 | (0wx0386,0wx0386), | |
2396 | (0wx0388,0wx038A), | |
2397 | (0wx038C,0wx038C), | |
2398 | (0wx038E,0wx03A1), | |
2399 | (0wx03A3,0wx03CE), | |
2400 | (0wx03D0,0wx03D6), | |
2401 | (0wx03DA,0wx03DA), | |
2402 | (0wx03DC,0wx03DC), | |
2403 | (0wx03DE,0wx03DE), | |
2404 | (0wx03E0,0wx03E0), | |
2405 | (0wx03E2,0wx03F3), | |
2406 | (0wx0401,0wx040C), | |
2407 | (0wx040E,0wx044F), | |
2408 | (0wx0451,0wx045C), | |
2409 | (0wx045E,0wx0481), | |
2410 | (0wx0490,0wx04C4), | |
2411 | (0wx04C7,0wx04C8), | |
2412 | (0wx04CB,0wx04CC), | |
2413 | (0wx04D0,0wx04EB), | |
2414 | (0wx04EE,0wx04F5), | |
2415 | (0wx04F8,0wx04F9), | |
2416 | (0wx0531,0wx0556), | |
2417 | (0wx0559,0wx0559), | |
2418 | (0wx0561,0wx0586), | |
2419 | (0wx05D0,0wx05EA), | |
2420 | (0wx05F0,0wx05F2), | |
2421 | (0wx0621,0wx063A), | |
2422 | (0wx0641,0wx064A), | |
2423 | (0wx0671,0wx06B7), | |
2424 | (0wx06BA,0wx06BE), | |
2425 | (0wx06C0,0wx06CE), | |
2426 | (0wx06D0,0wx06D3), | |
2427 | (0wx06D5,0wx06D5), | |
2428 | (0wx06E5,0wx06E6), | |
2429 | (0wx0905,0wx0939), | |
2430 | (0wx093D,0wx093D), | |
2431 | (0wx0958,0wx0961), | |
2432 | (0wx0985,0wx098C), | |
2433 | (0wx098F,0wx0990), | |
2434 | (0wx0993,0wx09A8), | |
2435 | (0wx09AA,0wx09B0), | |
2436 | (0wx09B2,0wx09B2), | |
2437 | (0wx09B6,0wx09B9), | |
2438 | (0wx09DC,0wx09DD), | |
2439 | (0wx09DF,0wx09E1), | |
2440 | (0wx09F0,0wx09F1), | |
2441 | (0wx0A05,0wx0A0A), | |
2442 | (0wx0A0F,0wx0A10), | |
2443 | (0wx0A13,0wx0A28), | |
2444 | (0wx0A2A,0wx0A30), | |
2445 | (0wx0A32,0wx0A33), | |
2446 | (0wx0A35,0wx0A36), | |
2447 | (0wx0A38,0wx0A39), | |
2448 | (0wx0A59,0wx0A5C), | |
2449 | (0wx0A5E,0wx0A5E), | |
2450 | (0wx0A72,0wx0A74), | |
2451 | (0wx0A85,0wx0A8B), | |
2452 | (0wx0A8D,0wx0A8D), | |
2453 | (0wx0A8F,0wx0A91), | |
2454 | (0wx0A93,0wx0AA8), | |
2455 | (0wx0AAA,0wx0AB0), | |
2456 | (0wx0AB2,0wx0AB3), | |
2457 | (0wx0AB5,0wx0AB9), | |
2458 | (0wx0ABD,0wx0ABD), | |
2459 | (0wx0AE0,0wx0AE0), | |
2460 | (0wx0B05,0wx0B0C), | |
2461 | (0wx0B0F,0wx0B10), | |
2462 | (0wx0B13,0wx0B28), | |
2463 | (0wx0B2A,0wx0B30), | |
2464 | (0wx0B32,0wx0B33), | |
2465 | (0wx0B36,0wx0B39), | |
2466 | (0wx0B3D,0wx0B3D), | |
2467 | (0wx0B5C,0wx0B5D), | |
2468 | (0wx0B5F,0wx0B61), | |
2469 | (0wx0B85,0wx0B8A), | |
2470 | (0wx0B8E,0wx0B90), | |
2471 | (0wx0B92,0wx0B95), | |
2472 | (0wx0B99,0wx0B9A), | |
2473 | (0wx0B9C,0wx0B9C), | |
2474 | (0wx0B9E,0wx0B9F), | |
2475 | (0wx0BA3,0wx0BA4), | |
2476 | (0wx0BA8,0wx0BAA), | |
2477 | (0wx0BAE,0wx0BB5), | |
2478 | (0wx0BB7,0wx0BB9), | |
2479 | (0wx0C05,0wx0C0C), | |
2480 | (0wx0C0E,0wx0C10), | |
2481 | (0wx0C12,0wx0C28), | |
2482 | (0wx0C2A,0wx0C33), | |
2483 | (0wx0C35,0wx0C39), | |
2484 | (0wx0C60,0wx0C61), | |
2485 | (0wx0C85,0wx0C8C), | |
2486 | (0wx0C8E,0wx0C90), | |
2487 | (0wx0C92,0wx0CA8), | |
2488 | (0wx0CAA,0wx0CB3), | |
2489 | (0wx0CB5,0wx0CB9), | |
2490 | (0wx0CDE,0wx0CDE), | |
2491 | (0wx0CE0,0wx0CE1), | |
2492 | (0wx0D05,0wx0D0C), | |
2493 | (0wx0D0E,0wx0D10), | |
2494 | (0wx0D12,0wx0D28), | |
2495 | (0wx0D2A,0wx0D39), | |
2496 | (0wx0D60,0wx0D61), | |
2497 | (0wx0E01,0wx0E2E), | |
2498 | (0wx0E30,0wx0E30), | |
2499 | (0wx0E32,0wx0E33), | |
2500 | (0wx0E40,0wx0E45), | |
2501 | (0wx0E81,0wx0E82), | |
2502 | (0wx0E84,0wx0E84), | |
2503 | (0wx0E87,0wx0E88), | |
2504 | (0wx0E8A,0wx0E8A), | |
2505 | (0wx0E8D,0wx0E8D), | |
2506 | (0wx0E94,0wx0E97), | |
2507 | (0wx0E99,0wx0E9F), | |
2508 | (0wx0EA1,0wx0EA3), | |
2509 | (0wx0EA5,0wx0EA5), | |
2510 | (0wx0EA7,0wx0EA7), | |
2511 | (0wx0EAA,0wx0EAB), | |
2512 | (0wx0EAD,0wx0EAE), | |
2513 | (0wx0EB0,0wx0EB0), | |
2514 | (0wx0EB2,0wx0EB3), | |
2515 | (0wx0EBD,0wx0EBD), | |
2516 | (0wx0EC0,0wx0EC4), | |
2517 | (0wx0F40,0wx0F47), | |
2518 | (0wx0F49,0wx0F69), | |
2519 | (0wx10A0,0wx10C5), | |
2520 | (0wx10D0,0wx10F6), | |
2521 | (0wx1100,0wx1100), | |
2522 | (0wx1102,0wx1103), | |
2523 | (0wx1105,0wx1107), | |
2524 | (0wx1109,0wx1109), | |
2525 | (0wx110B,0wx110C), | |
2526 | (0wx110E,0wx1112), | |
2527 | (0wx113C,0wx113C), | |
2528 | (0wx113E,0wx113E), | |
2529 | (0wx1140,0wx1140), | |
2530 | (0wx114C,0wx114C), | |
2531 | (0wx114E,0wx114E), | |
2532 | (0wx1150,0wx1150), | |
2533 | (0wx1154,0wx1155), | |
2534 | (0wx1159,0wx1159), | |
2535 | (0wx115F,0wx1161), | |
2536 | (0wx1163,0wx1163), | |
2537 | (0wx1165,0wx1165), | |
2538 | (0wx1167,0wx1167), | |
2539 | (0wx1169,0wx1169), | |
2540 | (0wx116D,0wx116E), | |
2541 | (0wx1172,0wx1173), | |
2542 | (0wx1175,0wx1175), | |
2543 | (0wx119E,0wx119E), | |
2544 | (0wx11A8,0wx11A8), | |
2545 | (0wx11AB,0wx11AB), | |
2546 | (0wx11AE,0wx11AF), | |
2547 | (0wx11B7,0wx11B8), | |
2548 | (0wx11BA,0wx11BA), | |
2549 | (0wx11BC,0wx11C2), | |
2550 | (0wx11EB,0wx11EB), | |
2551 | (0wx11F0,0wx11F0), | |
2552 | (0wx11F9,0wx11F9), | |
2553 | (0wx1E00,0wx1E9B), | |
2554 | (0wx1EA0,0wx1EF9), | |
2555 | (0wx1F00,0wx1F15), | |
2556 | (0wx1F18,0wx1F1D), | |
2557 | (0wx1F20,0wx1F45), | |
2558 | (0wx1F48,0wx1F4D), | |
2559 | (0wx1F50,0wx1F57), | |
2560 | (0wx1F59,0wx1F59), | |
2561 | (0wx1F5B,0wx1F5B), | |
2562 | (0wx1F5D,0wx1F5D), | |
2563 | (0wx1F5F,0wx1F7D), | |
2564 | (0wx1F80,0wx1FB4), | |
2565 | (0wx1FB6,0wx1FBC), | |
2566 | (0wx1FBE,0wx1FBE), | |
2567 | (0wx1FC2,0wx1FC4), | |
2568 | (0wx1FC6,0wx1FCC), | |
2569 | (0wx1FD0,0wx1FD3), | |
2570 | (0wx1FD6,0wx1FDB), | |
2571 | (0wx1FE0,0wx1FEC), | |
2572 | (0wx1FF2,0wx1FF4), | |
2573 | (0wx1FF6,0wx1FFC), | |
2574 | (0wx2126,0wx2126), | |
2575 | (0wx212A,0wx212B), | |
2576 | (0wx212E,0wx212E), | |
2577 | (0wx2180,0wx2182), | |
2578 | (0wx3041,0wx3094), | |
2579 | (0wx30A1,0wx30FA), | |
2580 | (0wx3105,0wx312C), | |
2581 | (0wxAC00,0wxD7A3) | |
2582 | ] : CharClasses.CharRange | |
2583 | ||
2584 | val ideoRange = [(0wx3007,0wx3007), | |
2585 | (0wx3021,0wx3029), | |
2586 | (0wx4E00,0wx9FA5) | |
2587 | ] : CharClasses.CharRange | |
2588 | ||
2589 | val combRange = [(0wx0300,0wx0345), | |
2590 | (0wx0360,0wx0361), | |
2591 | (0wx0483,0wx0486), | |
2592 | (0wx0591,0wx05A1), | |
2593 | (0wx05A3,0wx05B9), | |
2594 | (0wx05BB,0wx05BD), | |
2595 | (0wx05BF,0wx05BF), | |
2596 | (0wx05C1,0wx05C2), | |
2597 | (0wx05C4,0wx05C4), | |
2598 | (0wx064B,0wx0652), | |
2599 | (0wx0670,0wx0670), | |
2600 | (0wx06D6,0wx06DC), | |
2601 | (0wx06DD,0wx06DF), | |
2602 | (0wx06E0,0wx06E4), | |
2603 | (0wx06E7,0wx06E8), | |
2604 | (0wx06EA,0wx06ED), | |
2605 | (0wx0901,0wx0903), | |
2606 | (0wx093C,0wx093C), | |
2607 | (0wx093E,0wx094C), | |
2608 | (0wx094D,0wx094D), | |
2609 | (0wx0951,0wx0954), | |
2610 | (0wx0962,0wx0963), | |
2611 | (0wx0981,0wx0983), | |
2612 | (0wx09BC,0wx09BC), | |
2613 | (0wx09BE,0wx09BE), | |
2614 | (0wx09BF,0wx09BF), | |
2615 | (0wx09C0,0wx09C4), | |
2616 | (0wx09C7,0wx09C8), | |
2617 | (0wx09CB,0wx09CD), | |
2618 | (0wx09D7,0wx09D7), | |
2619 | (0wx09E2,0wx09E3), | |
2620 | (0wx0A02,0wx0A02), | |
2621 | (0wx0A3C,0wx0A3C), | |
2622 | (0wx0A3E,0wx0A3E), | |
2623 | (0wx0A3F,0wx0A3F), | |
2624 | (0wx0A40,0wx0A42), | |
2625 | (0wx0A47,0wx0A48), | |
2626 | (0wx0A4B,0wx0A4D), | |
2627 | (0wx0A70,0wx0A71), | |
2628 | (0wx0A81,0wx0A83), | |
2629 | (0wx0ABC,0wx0ABC), | |
2630 | (0wx0ABE,0wx0AC5), | |
2631 | (0wx0AC7,0wx0AC9), | |
2632 | (0wx0ACB,0wx0ACD), | |
2633 | (0wx0B01,0wx0B03), | |
2634 | (0wx0B3C,0wx0B3C), | |
2635 | (0wx0B3E,0wx0B43), | |
2636 | (0wx0B47,0wx0B48), | |
2637 | (0wx0B4B,0wx0B4D), | |
2638 | (0wx0B56,0wx0B57), | |
2639 | (0wx0B82,0wx0B83), | |
2640 | (0wx0BBE,0wx0BC2), | |
2641 | (0wx0BC6,0wx0BC8), | |
2642 | (0wx0BCA,0wx0BCD), | |
2643 | (0wx0BD7,0wx0BD7), | |
2644 | (0wx0C01,0wx0C03), | |
2645 | (0wx0C3E,0wx0C44), | |
2646 | (0wx0C46,0wx0C48), | |
2647 | (0wx0C4A,0wx0C4D), | |
2648 | (0wx0C55,0wx0C56), | |
2649 | (0wx0C82,0wx0C83), | |
2650 | (0wx0CBE,0wx0CC4), | |
2651 | (0wx0CC6,0wx0CC8), | |
2652 | (0wx0CCA,0wx0CCD), | |
2653 | (0wx0CD5,0wx0CD6), | |
2654 | (0wx0D02,0wx0D03), | |
2655 | (0wx0D3E,0wx0D43), | |
2656 | (0wx0D46,0wx0D48), | |
2657 | (0wx0D4A,0wx0D4D), | |
2658 | (0wx0D57,0wx0D57), | |
2659 | (0wx0E31,0wx0E31), | |
2660 | (0wx0E34,0wx0E3A), | |
2661 | (0wx0E47,0wx0E4E), | |
2662 | (0wx0EB1,0wx0EB1), | |
2663 | (0wx0EB4,0wx0EB9), | |
2664 | (0wx0EBB,0wx0EBC), | |
2665 | (0wx0EC8,0wx0ECD), | |
2666 | (0wx0F18,0wx0F19), | |
2667 | (0wx0F35,0wx0F35), | |
2668 | (0wx0F37,0wx0F37), | |
2669 | (0wx0F39,0wx0F39), | |
2670 | (0wx0F3E,0wx0F3E), | |
2671 | (0wx0F3F,0wx0F3F), | |
2672 | (0wx0F71,0wx0F84), | |
2673 | (0wx0F86,0wx0F8B), | |
2674 | (0wx0F90,0wx0F95), | |
2675 | (0wx0F97,0wx0F97), | |
2676 | (0wx0F99,0wx0FAD), | |
2677 | (0wx0FB1,0wx0FB7), | |
2678 | (0wx0FB9,0wx0FB9), | |
2679 | (0wx20D0,0wx20DC), | |
2680 | (0wx20E1,0wx20E1), | |
2681 | (0wx302A,0wx302F), | |
2682 | (0wx3099,0wx3099), | |
2683 | (0wx309A,0wx309A) | |
2684 | ] : CharClasses.CharRange | |
2685 | ||
2686 | val extRange = [(0wx00B7,0wx00B7), | |
2687 | (0wx02D0,0wx02D0), | |
2688 | (0wx02D1,0wx02D1), | |
2689 | (0wx0387,0wx0387), | |
2690 | (0wx0640,0wx0640), | |
2691 | (0wx0E46,0wx0E46), | |
2692 | (0wx0EC6,0wx0EC6), | |
2693 | (0wx3005,0wx3005), | |
2694 | (0wx3031,0wx3035), | |
2695 | (0wx309D,0wx309E), | |
2696 | (0wx30FC,0wx30FE) | |
2697 | ] : CharClasses.CharRange | |
2698 | ||
2699 | val nmsRange = List.concat | |
2700 | [[(0wx3A,0wx3A),(0wx5F,0wx5F)](* :_ *), | |
2701 | baseRange, | |
2702 | ideoRange] | |
2703 | ||
2704 | val nameRange = List.concat | |
2705 | [[(0wx2D,0wx2D),(0wx2E,0wx2E)](* -. *), | |
2706 | digitRange, | |
2707 | combRange, | |
2708 | extRange, | |
2709 | nmsRange] | |
2710 | ||
2711 | val pubidRange = List.concat | |
2712 | [map (fn c => (c,c)) [0wx0A,0wx0D,0wx20], (* space,cr,lf *) | |
2713 | map (fn c => (c,c)) (UniChar.String2Data "-'()+,./:=?;!*#@$_%"), | |
2714 | [(0wx0030,0wx0039),(0wx0041,0wx005A),(0wx0061,0wx007A)] (* [0-9A-Za-z] *) | |
2715 | ] : CharClasses.CharRange | |
2716 | ||
2717 | val encRange = | |
2718 | [(0wx002D,0wx002E), (* -. *) | |
2719 | (0wx0030,0wx0039), (* 0-9 *) | |
2720 | (0wx0041,0wx005A), (* A-Z *) | |
2721 | (0wx005F,0wx005F), (* _ *) | |
2722 | (0wx0061,0wx007A) (* a-z *) | |
2723 | ] : CharClasses.CharRange | |
2724 | end | |
2725 | (* stop of ../../Unicode/Chars/uniRanges.sml *) | |
2726 | (* start of ../../Unicode/Chars/uniClasses.sml *) | |
2727 | ||
2728 | ||
2729 | ||
2730 | ||
2731 | (*--------------------------------------------------------------------------*) | |
2732 | (* Structure: UniClasses *) | |
2733 | (* *) | |
2734 | (* Notes: *) | |
2735 | (* read CharClasses in order to understand how CharClasses are handled. *) | |
2736 | (* *) | |
2737 | (* Depends on: *) | |
2738 | (* UniChar *) | |
2739 | (* CharClasses *) | |
2740 | (* *) | |
2741 | (* Exceptions raised by functions in this structure: *) | |
2742 | (* decValue : none *) | |
2743 | (* hexValue : none *) | |
2744 | (* isAsciiLetter : none *) | |
2745 | (* isEnc : none *) | |
2746 | (* isEncS : none *) | |
2747 | (* isName : none *) | |
2748 | (* isNms : none *) | |
2749 | (* isPubid : none *) | |
2750 | (* isS : none *) | |
2751 | (* isXml : none *) | |
2752 | (* isUnicode : none *) | |
2753 | (* isVers : none *) | |
2754 | (*--------------------------------------------------------------------------*) | |
2755 | signature UniClasses = | |
2756 | sig | |
2757 | val isName : UniChar.Char -> bool | |
2758 | val isNms : UniChar.Char -> bool | |
2759 | val isPubid : UniChar.Char -> bool | |
2760 | val isS : UniChar.Char -> bool | |
2761 | val isEnc : UniChar.Char -> bool | |
2762 | val isEncS : UniChar.Char -> bool | |
2763 | val isVers : UniChar.Char -> bool | |
2764 | val isDec : UniChar.Char -> bool | |
2765 | val isHex : UniChar.Char -> bool | |
2766 | val isXml : UniChar.Char -> bool | |
2767 | val isUnicode : UniChar.Char -> bool | |
2768 | ||
2769 | val decValue : UniChar.Char -> UniChar.Char option | |
2770 | val hexValue : UniChar.Char -> UniChar.Char option | |
2771 | ||
2772 | val isAsciiLetter : UniChar.Char -> bool | |
2773 | end | |
2774 | ||
2775 | structure UniClasses : UniClasses = | |
2776 | struct | |
2777 | open UniChar CharClasses UniRanges | |
2778 | ||
2779 | (*--------------------------------------------------------------------*) | |
2780 | (* initialize the character classes. *) | |
2781 | (*--------------------------------------------------------------------*) | |
2782 | local | |
2783 | val nmsTemp = initialize(0wx0000,0wx3FFF) | |
2784 | val restNms = addCharRange(nmsTemp,0wx0000,0wx3FFF,nmsRange) | |
2785 | val _ = if restNms=[(0wxAC00,0wxD7A3),(0wx4E00,0wx9FA5)] then () | |
2786 | else print ("Warning: extra characters after computing nms char class.\n") | |
2787 | ||
2788 | val nameTemp = initialize(0wx0000,0wxFFFF) | |
2789 | val restName = addCharRange(nameTemp,0wx0000,0wx3FFF,nameRange) | |
2790 | val _ = if restName=[(0wxAC00,0wxD7A3),(0wx4E00,0wx9FA5)] then () | |
2791 | else print ("Warning: extra characters after computing name char class.\n") | |
2792 | ||
2793 | val pubTemp = initialize(0wx0000,0wx007F) | |
2794 | val restPubid = addCharRange(pubTemp,0wx0000,0wx007F,pubidRange) | |
2795 | val _ = if restPubid=nil then () | |
2796 | else print ("Warning: extra characters after computing pubid char class.\n") | |
2797 | ||
2798 | val encTemp = initialize(0wx0000,0wx007F) | |
2799 | val restEnc = addCharRange(encTemp,0wx0000,0wx007F,encRange) | |
2800 | val _ = if restEnc=nil then () | |
2801 | else print ("Warning: extra characters after computing enc char class.\n") | |
2802 | in | |
2803 | val nmsClass = finalize nmsTemp | |
2804 | val nameClass = finalize nameTemp | |
2805 | val pubClass = finalize pubTemp | |
2806 | val encClass = finalize encTemp | |
2807 | end | |
2808 | ||
2809 | (*--------------------------------------------------------------------*) | |
2810 | (* is a character a name start char? *) | |
2811 | (*--------------------------------------------------------------------*) | |
2812 | fun isNms c = if c<0wx4000 then inCharClass(c,nmsClass) | |
2813 | else | |
2814 | c>=0wx4E00 andalso c<=0wx9FA5 orelse | |
2815 | c>=0wxAC00 andalso c<=0wxD7A3 | |
2816 | ||
2817 | (*--------------------------------------------------------------------*) | |
2818 | (* is a character a name char? *) | |
2819 | (*--------------------------------------------------------------------*) | |
2820 | fun isName c = if c<0wx4000 then inCharClass(c,nameClass) | |
2821 | else | |
2822 | c>=0wx4E00 andalso c<=0wx9FA5 orelse | |
2823 | c>=0wxAC00 andalso c<=0wxD7A3 | |
2824 | ||
2825 | (*--------------------------------------------------------------------*) | |
2826 | (* is a character a pubid char? *) | |
2827 | (*--------------------------------------------------------------------*) | |
2828 | fun isPubid c = c<0wx80 andalso inCharClass(c,pubClass) | |
2829 | ||
2830 | (*--------------------------------------------------------------------*) | |
2831 | (* is a character valid in an encoding name, at its start, or in a *) | |
2832 | (* version number? *) | |
2833 | (*--------------------------------------------------------------------*) | |
2834 | fun isEnc c = | |
2835 | c<0wx80 andalso inCharClass(c,encClass) | |
2836 | fun isEncS (c:UniChar.Char) = | |
2837 | c>=0wx41 andalso c<=0wx5A orelse | |
2838 | c>=0wx61 andalso c<=0wx7A | |
2839 | fun isVers c = | |
2840 | isEnc c orelse c=0wx3A (* #":" *) | |
2841 | ||
2842 | (*--------------------------------------------------------------------*) | |
2843 | (* these are the valid Unicode characters (including surrogates). *) | |
2844 | (*--------------------------------------------------------------------*) | |
2845 | fun isUnicode (c:UniChar.Char) = c<=0wx10FFFF | |
2846 | ||
2847 | (*--------------------------------------------------------------------*) | |
2848 | (* XML characters if not checked for Unicode char in advance. *) | |
2849 | (*--------------------------------------------------------------------*) | |
2850 | fun isXml (c:UniChar.Char) = | |
2851 | c>=0wx0020 andalso c<=0wxD7FF orelse | |
2852 | c>=0wxE000 andalso c<=0wxFFFD orelse | |
2853 | c>=0wx10000 andalso c<=0wx10FFFF orelse | |
2854 | c=0wx9 orelse c=0wxA orelse c=0wxD | |
2855 | ||
2856 | (*--------------------------------------------------------------------*) | |
2857 | (* the frontend supresses 0wxD (carriage return), but its is still *) | |
2858 | (* present when encoding is recognized. *) | |
2859 | (*--------------------------------------------------------------------*) | |
2860 | fun isS (c:UniChar.Char) = | |
2861 | case c | |
2862 | of 0wx09 => true | |
2863 | | 0wx0A => true | |
2864 | | 0wx0D => true | |
2865 | | 0wx20 => true | |
2866 | | _ => false | |
2867 | ||
2868 | (*--------------------------------------------------------------------*) | |
2869 | (* is this character an ascii decimal/hexadecimal digit? *) | |
2870 | (*--------------------------------------------------------------------*) | |
2871 | fun isDec (c:UniChar.Char) = | |
2872 | c>=0wx30 andalso c<=0wx39 | |
2873 | fun isHex (c:UniChar.Char) = | |
2874 | c>=0wx30 andalso c<=0wx39 orelse | |
2875 | c>=0wx41 andalso c<=0wx46 orelse | |
2876 | c>=0wx61 andalso c<=0wx66 | |
2877 | ||
2878 | (*--------------------------------------------------------------------*) | |
2879 | (* calculate the decimal/hexadecimal value of an ascii (hex-)digit. *) | |
2880 | (*--------------------------------------------------------------------*) | |
2881 | fun decValue (c:UniChar.Char) = | |
2882 | let val v = c-0wx30 | |
2883 | in if v<=0wx9 then SOME v else NONE | |
2884 | end | |
2885 | fun hexValue (c:UniChar.Char) = | |
2886 | let val v = c-0wx30 | |
2887 | in if v<=0wx9 then SOME v | |
2888 | else (if c>=0wx41 andalso c<=0wx46 then SOME(c-0wx37) | |
2889 | else if c>=0wx61 andalso c<=0wx66 then SOME(c-0wx57) | |
2890 | else NONE) | |
2891 | end | |
2892 | ||
2893 | (*--------------------------------------------------------------------*) | |
2894 | (* is c in [a-z]+[A-Z]? *) | |
2895 | (*--------------------------------------------------------------------*) | |
2896 | fun isAsciiLetter (c:UniChar.Char) = | |
2897 | c>=0wx41 andalso c<=0wx5A orelse | |
2898 | c>=0wx61 andalso c<=0wx7A | |
2899 | end | |
2900 | (* stop of ../../Unicode/Chars/uniClasses.sml *) | |
2901 | (* start of ../../Unicode/Uri/uriDecode.sml *) | |
2902 | signature UriDecode = | |
2903 | sig | |
2904 | val decodeUriLatin : string -> string | |
2905 | val decodeUriUtf8 : string -> string | |
2906 | end | |
2907 | ||
2908 | structure UriDecode : UriDecode = | |
2909 | struct | |
2910 | open UniChar UtilInt | |
2911 | ||
2912 | infix 8 << <<< | |
2913 | infix 7 && | |
2914 | infix 6 || ||| | |
2915 | ||
2916 | val op && = Word8.andb | |
2917 | val op << = Word8.<< | |
2918 | val op <<< = Chars.<< | |
2919 | val op || = Word8.orb | |
2920 | val op ||| = Chars.orb | |
2921 | ||
2922 | val Byte2Char = Chars.fromLargeWord o Word8.toLargeWord | |
2923 | ||
2924 | fun hexValue c = | |
2925 | if #"0"<=c andalso #"9">=c then SOME (Byte.charToByte c-0wx30) | |
2926 | else if #"A"<=c andalso #"F">=c then SOME (Byte.charToByte c-0wx37) | |
2927 | else if #"a"<=c andalso #"f">=c then SOME (Byte.charToByte c-0wx57) | |
2928 | else NONE | |
2929 | ||
2930 | exception Failed of char list | |
2931 | ||
2932 | fun getQuads cs = | |
2933 | case cs | |
2934 | of c1::c2::cs1 => (case (hexValue c1,hexValue c2) | |
2935 | of (SOME b1,SOME b2) => ((b1 << 0w4 || b2),cs1) | |
2936 | | _ => raise Failed cs1) | |
2937 | | _ => raise Failed nil | |
2938 | ||
2939 | (*--------------------------------------------------------------------*) | |
2940 | (* decode UTF-8 *) | |
2941 | (*--------------------------------------------------------------------*) | |
2942 | val byte1switch = Array.array(256,1) (* 1 byte *) | |
2943 | val _ = appInterval (fn i => Array.update(byte1switch,i,0)) (0x80,0xBF) (* Error *) | |
2944 | val _ = appInterval (fn i => Array.update(byte1switch,i,2)) (0xC0,0xDF) (* 2 bytes *) | |
2945 | val _ = appInterval (fn i => Array.update(byte1switch,i,3)) (0xE0,0xEF) (* 3 bytes *) | |
2946 | val _ = appInterval (fn i => Array.update(byte1switch,i,4)) (0xF0,0xF7) (* 4 bytes *) | |
2947 | val _ = appInterval (fn i => Array.update(byte1switch,i,5)) (0xF8,0xFB) (* 5 bytes *) | |
2948 | val _ = appInterval (fn i => Array.update(byte1switch,i,6)) (0xFC,0xFD) (* 6 bytes *) | |
2949 | ||
2950 | val diff2 = 0wx00003080 | |
2951 | val diff3 = diff2 <<< 0wx6 ||| 0wx00020080 | |
2952 | val diff4 = diff3 <<< 0wx6 ||| 0wx00400080 | |
2953 | val diff5 = diff4 <<< 0wx6 ||| 0wx08000080 | |
2954 | val diff6 = diff5 <<< 0wx6 ||| 0wx00000080 | |
2955 | val diffsByLen = Vector.fromList [0w0,0w0,diff2,diff3,diff4,diff5,diff6] | |
2956 | ||
2957 | fun getByte cs = | |
2958 | case cs | |
2959 | of #"%"::cs1 => getQuads cs1 | |
2960 | | c::cs1 => (Byte.charToByte c,cs1) | |
2961 | | nil => raise Failed nil | |
2962 | ||
2963 | fun getBytes(b,cs,n) = | |
2964 | let | |
2965 | fun do_err (cs,m) = | |
2966 | if n<m then raise Failed cs | |
2967 | else let val (_,cs1) = getByte cs | |
2968 | in do_err (cs1,m+1) | |
2969 | end | |
2970 | fun doit (w,cs,m) = | |
2971 | if n<m then (w,cs) | |
2972 | else let val (b,cs1) = getByte cs handle Failed cs => do_err(cs,m+1) | |
2973 | val w1 = if b && 0wxC0 = 0wx80 then w <<< 0w6 + Byte2Char b | |
2974 | else do_err(cs1,m+1) | |
2975 | in doit (w1,cs1,m+1) | |
2976 | end | |
2977 | val (w,cs1) = doit (Byte2Char b,cs,2) | |
2978 | val diff = Vector.sub(diffsByLen,n) | |
2979 | val c = w-diff | |
2980 | in | |
2981 | if c<0wx100 then (Char2char c,cs1) | |
2982 | else raise Failed cs1 | |
2983 | end | |
2984 | ||
2985 | fun getCharUtf8 cs = | |
2986 | let val (b,cs1) = getQuads cs | |
2987 | in case Array.sub(byte1switch,Word8.toInt b) | |
2988 | of 0 (* error *) => raise Failed cs1 | |
2989 | | 1 (* 1 byte *) => (Byte.byteToChar b,cs1) | |
2990 | | n (* n bytes *) => getBytes(b,cs1,n) | |
2991 | end | |
2992 | ||
2993 | fun decodeUriUtf8 str = | |
2994 | let | |
2995 | val cs = String.explode str | |
2996 | ||
2997 | fun doit yet nil = yet | |
2998 | | doit yet (c::cs) = | |
2999 | if #"%"<>c then doit (c::yet) cs | |
3000 | else let val (yet1,cs1) = let val (ch,cs1) = getCharUtf8 cs | |
3001 | in (ch::yet,cs1) | |
3002 | end | |
3003 | handle Failed cs => (yet,cs) | |
3004 | in doit yet1 cs1 | |
3005 | end | |
3006 | in | |
3007 | String.implode(rev(doit nil cs)) | |
3008 | end | |
3009 | ||
3010 | (*--------------------------------------------------------------------*) | |
3011 | (* decode Latin *) | |
3012 | (*--------------------------------------------------------------------*) | |
3013 | fun getChar cs = | |
3014 | case cs | |
3015 | of #"%"::cs1 => let val (b,cs2) = getQuads cs1 | |
3016 | in (Byte.byteToChar b,cs2) | |
3017 | end | |
3018 | | c::cs1 => (c,cs1) | |
3019 | | nil => raise Failed nil | |
3020 | ||
3021 | fun decodeUriLatin str = | |
3022 | let | |
3023 | val cs = String.explode str | |
3024 | ||
3025 | fun doit yet nil = yet | |
3026 | | doit yet (c::cs) = | |
3027 | let val (yet1,cs1) = let val (ch,cs1) = getChar cs | |
3028 | in (ch::yet,cs1) | |
3029 | end | |
3030 | handle Failed cs => (yet,cs) | |
3031 | in doit yet1 cs1 | |
3032 | end | |
3033 | in | |
3034 | String.implode(rev(doit nil cs)) | |
3035 | end | |
3036 | end | |
3037 | (* stop of ../../Unicode/Uri/uriDecode.sml *) | |
3038 | (* start of ../../Unicode/Uri/uriEncode.sml *) | |
3039 | signature UriEncode = | |
3040 | sig | |
3041 | val Data2UriUtf8 : UniChar.Data -> string | |
3042 | val Data2UriLatin : UniChar.Data -> string | |
3043 | ||
3044 | val Vector2UriUtf8 : UniChar.Vector -> string | |
3045 | val Vector2UriLatin : UniChar.Vector -> string | |
3046 | ||
3047 | val String2UriUtf8 : string -> string | |
3048 | val String2UriLatin : string -> string | |
3049 | end | |
3050 | ||
3051 | structure UriEncode : UriEncode = | |
3052 | struct | |
3053 | ||
3054 | open UniChar UniClasses | |
3055 | ||
3056 | infix 8 >> >>> | |
3057 | infix 7 && &&& | |
3058 | infix 6 || | |
3059 | ||
3060 | val op && = Word8.andb | |
3061 | val op &&& = Chars.andb | |
3062 | val op >> = Word8.>> | |
3063 | val op >>> = Chars.>> | |
3064 | val op || = Word8.orb | |
3065 | ||
3066 | val Char2Byte = Word8.fromLargeWord o Chars.toLargeWord | |
3067 | ||
3068 | fun encodeCharUtf8 c = | |
3069 | if c<0wx80 then [Char2Byte c] | |
3070 | else if c<0wx800 | |
3071 | then [0wxC0 || Char2Byte(c >>> 0w6), | |
3072 | 0wx80 || Char2Byte(c &&& 0wx3F)] | |
3073 | else if c<0wx10000 | |
3074 | then [0wxE0 || Char2Byte(c >>> 0w12), | |
3075 | 0wx80 || Char2Byte((c >>> 0w6) &&& 0wx3F), | |
3076 | 0wx80 || Char2Byte(c &&& 0wx3F)] | |
3077 | else if c<0wx200000 | |
3078 | then [0wxF0 || Char2Byte(c >>> 0w18), | |
3079 | 0wx80 || Char2Byte((c >>> 0w12) &&& 0wx3F), | |
3080 | 0wx80 || Char2Byte((c >>> 0w6) &&& 0wx3F), | |
3081 | 0wx80 || Char2Byte(c &&& 0wx3F)] | |
3082 | else if c<0wx4000000 | |
3083 | then [0wxF8 || Char2Byte(c >>> 0w24), | |
3084 | 0wx80 || Char2Byte((c >>> 0w18) &&& 0wx3F), | |
3085 | 0wx80 || Char2Byte((c >>> 0w12) &&& 0wx3F), | |
3086 | 0wx80 || Char2Byte((c >>> 0w6) &&& 0wx3F), | |
3087 | 0wx80 || Char2Byte(c &&& 0wx3F)] | |
3088 | else [0wxFC || Char2Byte(c >>> 0w30), | |
3089 | 0wx80 || Char2Byte((c >>> 0w24) &&& 0wx3F), | |
3090 | 0wx80 || Char2Byte((c >>> 0w18) &&& 0wx3F), | |
3091 | 0wx80 || Char2Byte((c >>> 0w12) &&& 0wx3F), | |
3092 | 0wx80 || Char2Byte((c >>> 0w6) &&& 0wx3F), | |
3093 | 0wx80 || Char2Byte(c &&& 0wx3F)] | |
3094 | ||
3095 | fun Byte2Cc b = | |
3096 | let fun Quad2C b = if b<0wxA then Byte.byteToChar(b+0wx30) else Byte.byteToChar(b+0wx37) | |
3097 | in (Quad2C(b >> 0w4),Quad2C(b && 0wx0F)) | |
3098 | end | |
3099 | ||
3100 | fun precedesHex (i,cv) = | |
3101 | if Vector.length cv <= i+2 then false | |
3102 | else let val (c1,c2) = (Vector.sub(cv,i+1),Vector.sub(cv,i+2)) | |
3103 | in isHex c1 andalso isHex c2 | |
3104 | end | |
3105 | ||
3106 | fun Vector2UriUtf8 cv = | |
3107 | let val revd = Vector.foldli | |
3108 | (fn (i,c,s) => if c<0wx80 andalso (c<>0wx25 orelse precedesHex(i,cv)) | |
3109 | then Char2char c::s | |
3110 | else foldl (fn (b,s) => let val (c1,c2) = Byte2Cc b | |
3111 | in c2::c1:: #"%"::s | |
3112 | end) | |
3113 | s (encodeCharUtf8 c)) | |
3114 | nil (cv,0,NONE) | |
3115 | in String.implode (rev revd) | |
3116 | end | |
3117 | ||
3118 | fun Vector2UriLatin cv = | |
3119 | let val revd = Vector.foldli | |
3120 | (fn (i,c,s) => if c<0wx80 andalso (c<>0wx25 orelse precedesHex(i,cv)) | |
3121 | then Char2char c::s | |
3122 | else (if c>= 0w100 then s | |
3123 | else let val (c1,c2) = Byte2Cc (Char2Byte c) | |
3124 | in c2::c1:: #"%"::s | |
3125 | end)) | |
3126 | nil (cv,0,NONE) | |
3127 | in String.implode (rev revd) | |
3128 | end | |
3129 | ||
3130 | val Data2UriUtf8 = Vector2UriUtf8 o Data2Vector | |
3131 | val Data2UriLatin = Vector2UriLatin o Data2Vector | |
3132 | ||
3133 | val String2UriUtf8 = Vector2UriUtf8 o String2Vector | |
3134 | val String2UriLatin = Vector2UriLatin o String2Vector | |
3135 | end | |
3136 | ||
3137 | (* stop of ../../Unicode/Uri/uriEncode.sml *) | |
3138 | (* start of ../../Unicode/Uri/uri.sml *) | |
3139 | (* | |
3140 | require "basis.__array"; | |
3141 | require "basis.__byte"; | |
3142 | require "basis.__string"; | |
3143 | require "basis.__vector"; | |
3144 | require "basis.__word"; | |
3145 | require "basis.__word8"; | |
3146 | ||
3147 | require "util.unsafe"; | |
3148 | require "util.utilInt"; | |
3149 | ||
3150 | require "chars"; | |
3151 | require "naming"; | |
3152 | *) | |
3153 | signature Uri = | |
3154 | sig | |
3155 | eqtype Uri | |
3156 | ||
3157 | val emptyUri : Uri | |
3158 | ||
3159 | val hashUri : Uri -> word | |
3160 | val compareUri : Uri * Uri -> order | |
3161 | ||
3162 | val uriJoin : Uri * Uri -> Uri | |
3163 | val uriSuffix : Uri -> string | |
3164 | ||
3165 | val Data2Uri : UniChar.Data -> Uri | |
3166 | val Vector2Uri : UniChar.Vector -> Uri | |
3167 | val String2Uri : string -> Uri | |
3168 | val Uri2String : Uri -> string | |
3169 | ||
3170 | val retrieveUri : Uri -> string * string * bool | |
3171 | end | |
3172 | ||
3173 | structure Uri :> Uri = | |
3174 | struct | |
3175 | open UniChar UniClasses UriDecode UriEncode UtilError UtilInt | |
3176 | ||
3177 | (*--------------------------------------------------------------------*) | |
3178 | (* decoding *) | |
3179 | (*--------------------------------------------------------------------*) | |
3180 | type Uri = string | |
3181 | ||
3182 | val emptyUri = "" | |
3183 | ||
3184 | val Vector2Uri = Vector2UriUtf8 | |
3185 | val Data2Uri = Data2UriUtf8 | |
3186 | val String2Uri = String2UriUtf8 | |
3187 | val Uri2String = decodeUriUtf8 | |
3188 | ||
3189 | val slash = "/" | |
3190 | ||
3191 | fun uriSuffix s = | |
3192 | let fun search i = if i<0 then NONE else case String.sub(s,i) | |
3193 | of #"." => SOME i | |
3194 | | #"/" => NONE | |
3195 | | _ => search (i-1) | |
3196 | in case search (String.size s-1) | |
3197 | of NONE => "" | |
3198 | | SOME i => String.extract(s,i+1,NONE) | |
3199 | end | |
3200 | ||
3201 | fun isScheme c = | |
3202 | Char.isAlphaNum c orelse #"+"=c orelse #"-"=c orelse #"."=c | |
3203 | ||
3204 | fun uriAbsolute uri = | |
3205 | let fun search i = | |
3206 | if i>=String.size uri then false | |
3207 | else let val c=String.sub(uri,i) | |
3208 | in if #":"=c then true else if isScheme c then search (i+1) | |
3209 | else false | |
3210 | end | |
3211 | in | |
3212 | if uri="" then false | |
3213 | else if Char.isAlpha (String.sub(uri,0)) then search 1 | |
3214 | else false | |
3215 | end | |
3216 | fun uriRelative uri = not (uriAbsolute uri) | |
3217 | ||
3218 | fun uriLocal uri = | |
3219 | if String.isPrefix "file:" uri | |
3220 | then SOME(String.extract(uri,5,NONE)) | |
3221 | else if uriRelative uri then SOME uri | |
3222 | else NONE | |
3223 | ||
3224 | fun uriPath s = | |
3225 | let | |
3226 | fun search (i,hadSlash) = | |
3227 | if i<0 then if hadSlash then SOME 0 else NONE | |
3228 | else case String.sub(s,i) | |
3229 | of #"/" => if hadSlash then NONE else search(i-1,true) | |
3230 | | _ => if hadSlash then SOME(i+1) else search(i-1,false) | |
3231 | val len = String.size s | |
3232 | val posOpt = search(len-1,false) | |
3233 | in case posOpt | |
3234 | of NONE => emptyUri | |
3235 | | SOME i => if i=0 then slash | |
3236 | else String.extract(s,0,SOME(i+1)) | |
3237 | end | |
3238 | ||
3239 | fun uriAuth uri = | |
3240 | let | |
3241 | fun searchScheme i = | |
3242 | if i>=String.size uri then NONE | |
3243 | else let val c=String.sub(uri,i) | |
3244 | in if #":"=c then SOME i else if isScheme c then searchScheme (i+1) | |
3245 | else NONE | |
3246 | end | |
3247 | fun searchSlash i = | |
3248 | if i>=String.size uri then NONE | |
3249 | else let val c=String.sub(uri,i) | |
3250 | in if #"/"=c then SOME i else searchSlash (i+1) | |
3251 | end | |
3252 | in | |
3253 | if uri="" then "" | |
3254 | else if not (Char.isAlpha(String.sub(uri,0))) then "" | |
3255 | else case searchScheme 1 | |
3256 | of NONE => "" | |
3257 | | SOME i => | |
3258 | if String.size uri<=i+2 then String.extract(uri,0,SOME(i+1)) | |
3259 | else if #"/"=String.sub(uri,i+1) andalso #"/"=String.sub(uri,i+2) | |
3260 | then case searchSlash (i+3) | |
3261 | of NONE => uri | |
3262 | | SOME j => String.extract(uri,0,SOME j) | |
3263 | else String.extract(uri,0,SOME(i+1)) | |
3264 | end | |
3265 | ||
3266 | fun uriScheme uri = | |
3267 | let | |
3268 | fun searchScheme i = | |
3269 | if i>=String.size uri then NONE | |
3270 | else let val c=String.sub(uri,i) | |
3271 | in if #":"=c then SOME i else if isScheme c then searchScheme (i+1) | |
3272 | else NONE | |
3273 | end | |
3274 | in | |
3275 | if uri="" then "" | |
3276 | else if not (Char.isAlpha(String.sub(uri,0))) then "" | |
3277 | else case searchScheme 1 | |
3278 | of NONE => "" | |
3279 | | SOME i => String.extract(uri,0,SOME(i+1)) | |
3280 | end | |
3281 | ||
3282 | fun uriJoin(abs,rel) = | |
3283 | if rel="" then uriPath abs | |
3284 | else if abs="" then rel | |
3285 | else if String.isPrefix "//" rel then uriScheme abs^rel | |
3286 | else if #"/"=String.sub(rel,0) then uriAuth abs^rel | |
3287 | else if uriAbsolute rel then rel | |
3288 | else uriPath abs^rel | |
3289 | ||
3290 | val compareUri = String.compare | |
3291 | val hashUri = UtilHash.hashString | |
3292 | ||
3293 | fun convertCommand str (src,dst) = | |
3294 | let | |
3295 | val s = Substring.all str | |
3296 | fun doit ss s = | |
3297 | if Substring.isEmpty s then ss | |
3298 | else let val (sl,sr) = Substring.splitr (fn c => #"%"<>c) s | |
3299 | in if Substring.isEmpty sl then sr::ss | |
3300 | else let val sl' = Substring.trimr 1 sl | |
3301 | in case Substring.first sr | |
3302 | of SOME #"1" => let val sr' = Substring.triml 1 sr | |
3303 | in doit (Substring.all src::sr'::ss) sl' | |
3304 | end | |
3305 | | SOME #"2" => let val sr' = Substring.triml 1 sr | |
3306 | in doit (Substring.all dst::sr'::ss) sl' | |
3307 | end | |
3308 | | _ => doit (Substring.all "%"::sr::ss) sl' | |
3309 | end | |
3310 | end | |
3311 | val ss = doit nil s | |
3312 | val s = Substring.concat ss | |
3313 | in s | |
3314 | end | |
3315 | ||
3316 | fun retrieveRemote uri = | |
3317 | let | |
3318 | val tmp = OS.FileSys.tmpName() | |
3319 | val cmd = convertCommand Config.retrieveCommand (uri,tmp) | |
3320 | val status = OS.Process.system cmd | |
3321 | val _ = if status = OS.Process.success then () | |
3322 | else let val _ = (OS.FileSys.remove tmp | |
3323 | handle OS.SysErr _ => ()) | |
3324 | val cmd = convertCommand | |
3325 | Config.retrieveCommand ("<uri>",tmp) | |
3326 | in raise NoSuchFile (uri,"command '"^cmd^"' failed") | |
3327 | end | |
3328 | in (Uri2String uri,tmp,true) | |
3329 | end | |
3330 | ||
3331 | fun retrieveUri uri = | |
3332 | case uriLocal uri | |
3333 | of SOME f => (Uri2String uri,Uri2String f,false) | |
3334 | | NONE => retrieveRemote uri | |
3335 | end | |
3336 | (* stop of ../../Unicode/Uri/uri.sml *) | |
3337 | (* start of ../../Parser/version.sml *) | |
3338 | structure Version = | |
3339 | struct | |
3340 | val FXP_VERSION = "1.4.4" | |
3341 | end | |
3342 | (* stop of ../../Parser/version.sml *) | |
3343 | (* start of ../../Util/utilList.sml *) | |
3344 | ||
3345 | ||
3346 | ||
3347 | (*--------------------------------------------------------------------------*) | |
3348 | (* Structure: UtilList *) | |
3349 | (* *) | |
3350 | (* Depends on: *) | |
3351 | (* *) | |
3352 | (* Exceptions raised by functions in this structure: *) | |
3353 | (* member : none *) | |
3354 | (* findAndDelete : none *) | |
3355 | (*--------------------------------------------------------------------------*) | |
3356 | signature UtilList = | |
3357 | sig | |
3358 | val split : ('a -> bool) -> 'a list -> 'a list list | |
3359 | val member : ''a -> ''a list -> bool | |
3360 | val mapAllPairs : ('a * 'b -> 'c) -> 'a list * 'b list -> 'c list | |
3361 | val findAndMap : ('a -> 'b option) -> 'a list -> 'b option | |
3362 | val findAndDelete : ('a -> bool) -> 'a list -> ('a option * 'a list) | |
3363 | ||
3364 | val sort : ('a * 'a -> order) -> 'a list -> 'a list | |
3365 | val merge : ('a * 'a -> order) -> 'a list * 'a list -> 'a list | |
3366 | val diff : ('a * 'a -> order) -> 'a list * 'a list -> 'a list | |
3367 | val cap : ('a * 'a -> order) -> 'a list * 'a list -> 'a list | |
3368 | val sub : ('a * 'a -> order) -> 'a list * 'a list -> bool | |
3369 | val insert : ('a * 'a -> order) -> 'a * 'a list -> 'a list | |
3370 | val delete : ('a * 'a -> order) -> 'a * 'a list -> 'a list | |
3371 | val elem : ('a * 'a -> order) -> 'a * 'a list -> bool | |
3372 | end | |
3373 | ||
3374 | structure UtilList : UtilList = | |
3375 | struct | |
3376 | (*--------------------------------------------------------------------*) | |
3377 | (* split a list into a list of lists at each element fullfilling p. *) | |
3378 | (*--------------------------------------------------------------------*) | |
3379 | fun split p l = | |
3380 | let val (one,ls) = foldr | |
3381 | (fn (a,(curr,ls)) => if p a then (nil,curr::ls) else (a::curr,ls)) | |
3382 | (nil,nil) l | |
3383 | in one::ls | |
3384 | end | |
3385 | ||
3386 | (*--------------------------------------------------------------------*) | |
3387 | (* is x a member of l? *) | |
3388 | (*--------------------------------------------------------------------*) | |
3389 | fun member x l = List.exists (fn y => x=y) l | |
3390 | ||
3391 | (*--------------------------------------------------------------------*) | |
3392 | (* for [a1,...,an] and [b1,...,bk], generate *) | |
3393 | (* [f(a1,b1),f(a1,b2),...,f(an,bk-1),f(an,bk)]. *) | |
3394 | (*--------------------------------------------------------------------*) | |
3395 | fun mapAllPairs f (ass,bs) = | |
3396 | foldr | |
3397 | (fn (a,cs) => foldr (fn (b,cs) => f(a,b)::cs) cs bs) | |
3398 | nil ass | |
3399 | ||
3400 | (*--------------------------------------------------------------------*) | |
3401 | (* find the first element x of l such that f x = SOME y, and return *) | |
3402 | (* f x. If there is no such x, return NONE. *) | |
3403 | (*--------------------------------------------------------------------*) | |
3404 | fun findAndMap _ nil = NONE | |
3405 | | findAndMap f (x::xs) = case f x of NONE => findAndMap f xs | y => y | |
3406 | ||
3407 | (*--------------------------------------------------------------------*) | |
3408 | (* find the first element x of l such that f x = true, delete it from *) | |
3409 | (* l, and return SOME x with the modified list. If there is no such x *) | |
3410 | (* return (NONE,l). *) | |
3411 | (*--------------------------------------------------------------------*) | |
3412 | fun findAndDelete _ nil = (NONE,nil) | |
3413 | | findAndDelete f (x::xs) = | |
3414 | if f x then (SOME x,xs) | |
3415 | else let val (y,ys) = findAndDelete f xs in (y,x::ys) end | |
3416 | ||
3417 | (*--------------------------------------------------------------------*) | |
3418 | (* given a function that compares elements, merge two sorted lists. *) | |
3419 | (*--------------------------------------------------------------------*) | |
3420 | fun merge comp (l1,l2) = | |
3421 | let | |
3422 | fun go (nil,l) = l | |
3423 | | go (l,nil) = l | |
3424 | | go (l1 as (x1::r1),l2 as (x2::r2)) = | |
3425 | case comp(x1,x2) | |
3426 | of LESS => x1::go(r1,l2) | |
3427 | | EQUAL => go(l1,r2) | |
3428 | | GREATER => x2::go(l1,r2) | |
3429 | in go(l1,l2) | |
3430 | end | |
3431 | ||
3432 | (*--------------------------------------------------------------------*) | |
3433 | (* given a comparing function, compute the intersection of two *) | |
3434 | (* ordered lists. *) | |
3435 | (*--------------------------------------------------------------------*) | |
3436 | fun cap comp (l1,l2) = | |
3437 | let | |
3438 | fun go (nil,l) = nil | |
3439 | | go (l,nil) = nil | |
3440 | | go (l1 as (x1::r1),l2 as (x2::r2)) = | |
3441 | case comp(x1,x2) | |
3442 | of LESS => go(r1,l2) | |
3443 | | EQUAL => x1::go(r1,r2) | |
3444 | | GREATER => go(l1,r2) | |
3445 | in go(l1,l2) | |
3446 | end | |
3447 | ||
3448 | (*--------------------------------------------------------------------*) | |
3449 | (* given a comparing function, compute the difference of two *) | |
3450 | (* ordered lists. *) | |
3451 | (*--------------------------------------------------------------------*) | |
3452 | fun diff comp (l1,l2) = | |
3453 | let | |
3454 | fun go (nil,l) = nil | |
3455 | | go (l,nil) = l | |
3456 | | go (l1 as (x1::r1),l2 as (x2::r2)) = | |
3457 | case comp(x1,x2) | |
3458 | of LESS => x1::go(r1,l2) | |
3459 | | EQUAL => go(r1,r2) | |
3460 | | GREATER => go(l1,r2) | |
3461 | in go(l1,l2) | |
3462 | end | |
3463 | ||
3464 | (*--------------------------------------------------------------------*) | |
3465 | (* given a comparing function, find out whether an ordered list is *) | |
3466 | (* contained in an other ordered list. *) | |
3467 | (*--------------------------------------------------------------------*) | |
3468 | fun sub comp (l1,l2) = | |
3469 | let | |
3470 | fun go (nil,l) = true | |
3471 | | go (l,nil) = false | |
3472 | | go (l1 as (x1::r1),l2 as (x2::r2)) = | |
3473 | case comp(x1,x2) | |
3474 | of LESS => false | |
3475 | | EQUAL => go(r1,r2) | |
3476 | | GREATER => go(l1,r2) | |
3477 | in go(l1,l2) | |
3478 | end | |
3479 | ||
3480 | (*--------------------------------------------------------------------*) | |
3481 | (* given a function that compares elements, insert an element into an *) | |
3482 | (* ordered list. *) | |
3483 | (*--------------------------------------------------------------------*) | |
3484 | fun insert comp (x,l) = | |
3485 | let | |
3486 | fun go nil = [x] | |
3487 | | go (l as y::ys) = | |
3488 | case comp(x,y) | |
3489 | of LESS => x::l | |
3490 | | EQUAL => l | |
3491 | | GREATER => y::go ys | |
3492 | in go l | |
3493 | end | |
3494 | ||
3495 | (*--------------------------------------------------------------------*) | |
3496 | (* given a function that compares elements, delete an element from *) | |
3497 | (* an ordered list. *) | |
3498 | (*--------------------------------------------------------------------*) | |
3499 | fun delete comp (x,l) = | |
3500 | let | |
3501 | fun go nil = [x] | |
3502 | | go (l as y::ys) = | |
3503 | case comp(x,y) | |
3504 | of LESS => l | |
3505 | | EQUAL => ys | |
3506 | | GREATER => y::go ys | |
3507 | in go l | |
3508 | end | |
3509 | ||
3510 | (*--------------------------------------------------------------------*) | |
3511 | (* given a function that compares elements, insert an element into an *) | |
3512 | (* ordered list. *) | |
3513 | (*--------------------------------------------------------------------*) | |
3514 | fun elem comp (x,l) = | |
3515 | let | |
3516 | fun go nil = false | |
3517 | | go (l as y::ys) = | |
3518 | case comp(x,y) | |
3519 | of LESS => false | |
3520 | | EQUAL => true | |
3521 | | GREATER => go ys | |
3522 | in go l | |
3523 | end | |
3524 | ||
3525 | (*--------------------------------------------------------------------*) | |
3526 | (* merge-sort a list of elements comparable with the function in the *) | |
3527 | (* 1st argument. Preserve duplicate elements. *) | |
3528 | (*--------------------------------------------------------------------*) | |
3529 | fun sort _ nil = nil | |
3530 | | sort comp l = | |
3531 | let fun mergeOne (x::y::l) = merge comp (x,y)::mergeOne l | |
3532 | | mergeOne l = l | |
3533 | fun mergeAll [l] = l | |
3534 | | mergeAll ls = mergeAll (mergeOne ls) | |
3535 | val singles = map (fn x => [x]) l | |
3536 | in | |
3537 | mergeAll singles | |
3538 | end | |
3539 | ||
3540 | end | |
3541 | ||
3542 | (* stop of ../../Util/utilList.sml *) | |
3543 | (* start of ../../Parser/Dfa/dfaOptions.sml *) | |
3544 | signature DfaOptions = | |
3545 | sig | |
3546 | val O_DFA_INITIAL_WIDTH : int ref | |
3547 | val O_DFA_MAX_STATES : int ref | |
3548 | val O_DFA_WARN_TOO_LARGE : bool ref | |
3549 | ||
3550 | val setDfaDefaults : unit -> unit | |
3551 | val setDfaOptions : Options.Option list * (string -> unit) -> Options.Option list | |
3552 | ||
3553 | val dfaUsage : Options.Usage | |
3554 | end | |
3555 | ||
3556 | functor DfaOptions () : DfaOptions = | |
3557 | struct | |
3558 | open Options UtilInt | |
3559 | ||
3560 | val O_DFA_INITIAL_WIDTH = ref 4 | |
3561 | val O_DFA_MAX_STATES = ref 256 | |
3562 | val O_DFA_WARN_TOO_LARGE = ref true | |
3563 | ||
3564 | fun setDfaDefaults() = | |
3565 | let | |
3566 | val _ = O_DFA_INITIAL_WIDTH := 4 | |
3567 | val _ = O_DFA_MAX_STATES := 256 | |
3568 | val _ = O_DFA_WARN_TOO_LARGE := true | |
3569 | in () | |
3570 | end | |
3571 | ||
3572 | val dfaUsage = | |
3573 | [U_ITEM(["--dfa-initial-size=n"],"Initial size of DFA transition tables (16)"), | |
3574 | U_ITEM(["--dfa-initial-width=n"],"Same as --dfa-initial-size=2^n (4)"), | |
3575 | U_ITEM(["--dfa-max-size=n"],"Maximal size of DFAs for ambiguous content models (256)"), | |
3576 | U_ITEM(["--dfa-warn-size[=(yes|no)]"],"Warn about too large DFAs (yes)") | |
3577 | ] | |
3578 | ||
3579 | fun setDfaOptions(opts,doError) = | |
3580 | let | |
3581 | exception Failed of string option | |
3582 | ||
3583 | fun getNat str = | |
3584 | if str="" then raise Failed NONE | |
3585 | else let val cs = String.explode str | |
3586 | in foldl (fn (c,n) => if #"0">c orelse #"9"<c then raise Failed NONE | |
3587 | else 10*n+ord c-48) 0 cs | |
3588 | handle Overflow => raise Failed | |
3589 | (SOME("number "^str^" is too large for this system")) | |
3590 | end | |
3591 | ||
3592 | val yesNo = "'yes' or 'no'" | |
3593 | fun tooLarge n = String.concat ["number ",n," is too large for this system"] | |
3594 | fun mustHave key = String.concat ["option --",key," must have an argument"] | |
3595 | fun mustBe key what = String.concat | |
3596 | ["the argument to option --",key," must be ",what] | |
3597 | ||
3598 | fun do_yesno(key,valOpt,flag) = | |
3599 | case valOpt | |
3600 | of NONE => flag := true | |
3601 | | SOME "yes" => flag := true | |
3602 | | SOME "no" => flag := false | |
3603 | | SOME s => doError (mustBe key yesNo) | |
3604 | ||
3605 | fun do_num(key,valOpt,flag) = | |
3606 | case valOpt | |
3607 | of NONE => doError (mustHave key) | |
3608 | | SOME s => flag := getNat s | |
3609 | handle Failed NONE => doError (mustBe key "a number") | |
3610 | | Failed (SOME s) => doError s | |
3611 | ||
3612 | fun do_dfa_ts(key,valOpt,toWidth) = | |
3613 | case valOpt | |
3614 | of NONE => doError (mustHave key) | |
3615 | | SOME s => O_DFA_INITIAL_WIDTH := toWidth (getNat s) | |
3616 | handle Failed NONE => doError (mustBe key "a number") | |
3617 | | Failed (SOME s) => doError s | |
3618 | ||
3619 | fun do_long(key,valOpt) = | |
3620 | case key | |
3621 | of "dfa-initial-size" => true before do_dfa_ts(key,valOpt,nextPowerTwo) | |
3622 | | "dfa-initial-width" => true before do_dfa_ts(key,valOpt,fn i => i) | |
3623 | | "dfa-max-size" => true before do_num(key,valOpt,O_DFA_MAX_STATES) | |
3624 | | "dfa-warn-size" => true before do_yesno(key,valOpt,O_DFA_WARN_TOO_LARGE) | |
3625 | | _ => false | |
3626 | ||
3627 | and doit nil = nil | |
3628 | | doit (opt::opts) = | |
3629 | case opt | |
3630 | of OPT_NOOPT => opts | |
3631 | | OPT_LONG(key,value) => if do_long(key,value) then doit opts | |
3632 | else opt::doit opts | |
3633 | | OPT_NEG _ => opt::doit opts | |
3634 | | OPT_SHORT _ => opt::doit opts | |
3635 | | OPT_STRING _ => opt::doit opts | |
3636 | in doit opts | |
3637 | end | |
3638 | end | |
3639 | ||
3640 | ||
3641 | (* stop of ../../Parser/Dfa/dfaOptions.sml *) | |
3642 | (* start of ../../Parser/Params/parserOptions.sml *) | |
3643 | (*--------------------------------------------------------------------------*) | |
3644 | (* Structure: ParserOptions *) | |
3645 | (* *) | |
3646 | (* Depends on: none *) | |
3647 | (*--------------------------------------------------------------------------*) | |
3648 | signature ParserOptions = | |
3649 | sig | |
3650 | structure DfaOptions : DfaOptions | |
3651 | ||
3652 | val O_CHECK_ISO639 : bool ref | |
3653 | val O_CHECK_LANGID : bool ref | |
3654 | val O_CHECK_PREDEFINED : bool ref | |
3655 | val O_CHECK_RESERVED : bool ref | |
3656 | val O_CHECK_VERSION : bool ref | |
3657 | ||
3658 | val O_WARN_MULT_ENUM : bool ref | |
3659 | val O_WARN_XML_DECL : bool ref | |
3660 | val O_WARN_ATT_NO_ELEM : bool ref | |
3661 | val O_WARN_MULT_ENT_DECL : bool ref | |
3662 | val O_WARN_MULT_NOT_DECL : bool ref | |
3663 | val O_WARN_MULT_ATT_DEF : bool ref | |
3664 | val O_WARN_MULT_ATT_DECL : bool ref | |
3665 | val O_WARN_SHOULD_DECLARE : bool ref | |
3666 | val O_WARN_NON_ASCII_URI : bool ref | |
3667 | ||
3668 | val O_ERROR_MINIMIZE : bool ref | |
3669 | ||
3670 | val O_VALIDATE : bool ref | |
3671 | val O_COMPATIBILITY : bool ref | |
3672 | val O_INTEROPERABILITY : bool ref | |
3673 | ||
3674 | val O_INCLUDE_EXT_PARSED : bool ref | |
3675 | val O_INCLUDE_PARAM_ENTS : bool ref | |
3676 | ||
3677 | val setParserDefaults : unit -> unit | |
3678 | val setParserOptions : Options.Option list * (string -> unit) -> Options.Option list | |
3679 | ||
3680 | val parserUsage : Options.Usage | |
3681 | end | |
3682 | ||
3683 | functor ParserOptions () : ParserOptions = | |
3684 | struct | |
3685 | structure DfaOptions = DfaOptions () | |
3686 | ||
3687 | open DfaOptions Options UtilInt UtilList | |
3688 | ||
3689 | val O_CHECK_VERSION = ref true (* check for conforming xml version? *) | |
3690 | val O_CHECK_ISO639 = ref true (* check whether a two-letter LangCode *) | |
3691 | (* is acording to ISO 639? *) | |
3692 | val O_CHECK_LANGID = ref true (* check whether a LangCode fullfills *) | |
3693 | (* IETF RFC 1766? *) | |
3694 | val O_CHECK_RESERVED = ref false(* check for names starting with xml? *) | |
3695 | val O_CHECK_PREDEFINED = ref true (* check declarations of predefined *) | |
3696 | val O_WARN_MULT_ENUM = ref true (* check whether a token occurs *) | |
3697 | (* twice in the enumerated attribute *) | |
3698 | (* types of the same element *) | |
3699 | val O_WARN_XML_DECL = ref false (* warn if the XML decl is missing? *) | |
3700 | ||
3701 | val O_WARN_ATT_NO_ELEM = ref true (* warn for undeclared elements *) | |
3702 | (* in att def list declarations? *) | |
3703 | ||
3704 | val O_WARN_MULT_ENT_DECL = ref true (* warn about redefined entities *) | |
3705 | val O_WARN_MULT_NOT_DECL = ref true (* warn about redefined notations*) | |
3706 | val O_WARN_SHOULD_DECLARE = ref true (* warn if predefined entities *) | |
3707 | (* are not declared in the dtd *) | |
3708 | ||
3709 | val O_WARN_MULT_ATT_DEF = ref true (* warn if an attributes is defd *) | |
3710 | (* twice for the same element? *) | |
3711 | val O_WARN_MULT_ATT_DECL = ref true (* warn if there are multiple att *) | |
3712 | (* def lists for one element? *) | |
3713 | val O_WARN_NON_ASCII_URI = ref true (* warn about non-ascii chars in *) | |
3714 | (* system identifiers? *) | |
3715 | ||
3716 | val O_ERROR_MINIMIZE = ref true (* try to avoid repeating errors? *) | |
3717 | ||
3718 | val O_VALIDATE = ref true | |
3719 | val O_COMPATIBILITY = ref true | |
3720 | val O_INTEROPERABILITY = ref false | |
3721 | ||
3722 | val O_INCLUDE_EXT_PARSED = ref false | |
3723 | val O_INCLUDE_PARAM_ENTS = ref false | |
3724 | ||
3725 | fun setParserDefaults() = | |
3726 | let | |
3727 | val _ = setDfaDefaults() | |
3728 | ||
3729 | val _ = O_CHECK_ISO639 := false | |
3730 | val _ = O_CHECK_LANGID := false | |
3731 | val _ = O_CHECK_PREDEFINED := true | |
3732 | val _ = O_CHECK_RESERVED := false | |
3733 | val _ = O_CHECK_VERSION := true | |
3734 | ||
3735 | val _ = O_WARN_MULT_ENUM := true | |
3736 | val _ = O_WARN_XML_DECL := false | |
3737 | val _ = O_WARN_ATT_NO_ELEM := false | |
3738 | val _ = O_WARN_MULT_ENT_DECL := false | |
3739 | val _ = O_WARN_MULT_NOT_DECL := false | |
3740 | val _ = O_WARN_MULT_ATT_DEF := false | |
3741 | val _ = O_WARN_MULT_ATT_DECL := false | |
3742 | val _ = O_WARN_SHOULD_DECLARE := true | |
3743 | val _ = O_WARN_NON_ASCII_URI := true | |
3744 | ||
3745 | val _ = O_VALIDATE := true | |
3746 | val _ = O_COMPATIBILITY := true | |
3747 | val _ = O_INTEROPERABILITY := false | |
3748 | ||
3749 | val _ = O_ERROR_MINIMIZE := true | |
3750 | ||
3751 | val _ = O_INCLUDE_EXT_PARSED := false | |
3752 | val _ = O_INCLUDE_PARAM_ENTS := false | |
3753 | in () | |
3754 | end | |
3755 | ||
3756 | val parserUsage = | |
3757 | [U_ITEM(["-[n]v","--validate[=(yes|no)]"],"Turn on or off validation (yes)"), | |
3758 | U_ITEM(["-[n]c","--compat[=(yes|no)]","--compatibility[=(yes|no)]"], | |
3759 | "Turn on or off compatibility checking (yes)"), | |
3760 | U_ITEM(["-[n]i","--interop[=(yes|no)]","--interoperability[=(yes|no)]"], | |
3761 | "Turn on or off interoperability checking (no)"), | |
3762 | U_SEP, | |
3763 | U_ITEM(["--few-errors[=(yes|no)]"],"Report fewer errors (no)"), | |
3764 | U_ITEM(["--check-reserved[=(yes|no)]"], | |
3765 | "Checking for reserved names (no)"), | |
3766 | U_ITEM(["--check-predef[=(yes|no)]","--check-predefined[=(yes|no)]"], | |
3767 | "Check declaration of predefined entities (yes)"), | |
3768 | U_ITEM(["--check-lang-id[=(yes|no)]"],"Checking language identifiers (no)"), | |
3769 | U_ITEM(["--check-iso639[=(yes|no)]"],"Check ISO 639 language codes (no)"), | |
3770 | U_ITEM(["--check-xml-version[=(yes|no)]"], "Check XML version number (yes)"), | |
3771 | U_SEP, | |
3772 | U_ITEM(["--warn-xml-decl[=(yes|no)]"],"Warn if there is no XML declaration (no)"), | |
3773 | U_ITEM(["--warn-att-elem[=(yes|no)]"], | |
3774 | "Warn about attlist declarations for undeclared elements (no)"), | |
3775 | U_ITEM(["--warn-predefined[=(yes|no)]"], | |
3776 | "Warn if the predefined entities are not declared (no)"), | |
3777 | U_ITEM(["--warn-mult-decl[=<arg>]"],"Warn about multiple declarations (none)"), | |
3778 | U_ITEM(["--warn-uri[=(yes|no)]"],"Warn about non-ASCII characters in URIs (yes)"), | |
3779 | U_ITEM(["--warn[=all]"],"Warn about nearly everything"), | |
3780 | U_ITEM(["--warn=none"],"Do not print warnings"), | |
3781 | U_SEP, | |
3782 | U_ITEM(["--include-ext[=(yes|no)]","--include-external[=(yes|no)]"], | |
3783 | "Include external entities in non-validating mode (no)"), | |
3784 | U_ITEM(["--include-par[=(yes|no)]","--include-parameter[=(yes|no)]"], | |
3785 | "Include parameter entities and external subset in "^ | |
3786 | "non-validating mode (no)"), | |
3787 | U_SEP] | |
3788 | @dfaUsage | |
3789 | ||
3790 | fun setParserOptions(opts,doError) = | |
3791 | let | |
3792 | datatype What = ATT | ATTLIST | ENT | NOT | |
3793 | ||
3794 | exception Failed of string option | |
3795 | ||
3796 | fun getNat str = | |
3797 | if str="" then raise Failed NONE | |
3798 | else let val cs = String.explode str | |
3799 | in foldl (fn (c,n) => if #"0">c orelse #"9"<c then raise Failed NONE | |
3800 | else 10*n+ord c-48) 0 cs | |
3801 | handle Overflow => raise Failed | |
3802 | (SOME("number "^str^" is too large for this system")) | |
3803 | end | |
3804 | ||
3805 | val allNone = "'all' or 'none'" | |
3806 | val yesNo = "'yes' or 'no'" | |
3807 | val yesNoWhat = "'yes', 'no' or a list of 'att', 'attlist', 'ent' and 'not'" | |
3808 | fun errorMustBe(key,what) = doError | |
3809 | (String.concat ["the argument to option --",key," must be ",what]) | |
3810 | fun errorNoArg key = doError | |
3811 | (String.concat ["option --",key," has no argument"]) | |
3812 | ||
3813 | fun do_mult_decl(key,valOpt) = | |
3814 | let | |
3815 | val all = [ATT,ATTLIST,ENT,NOT] | |
3816 | fun setFlags whats = app (fn (what,flag) => flag := member what whats) | |
3817 | [(ATT,O_WARN_MULT_ATT_DEF),(ATTLIST,O_WARN_MULT_ATT_DECL), | |
3818 | (ENT,O_WARN_MULT_ENT_DECL),(NOT,O_WARN_MULT_NOT_DECL)] | |
3819 | in case valOpt | |
3820 | of NONE => setFlags all | |
3821 | | SOME "yes" => setFlags all | |
3822 | | SOME "no" => setFlags nil | |
3823 | | SOME s => let val fields = String.fields (fn c => #","=c) s | |
3824 | val whats = map | |
3825 | (fn s => case s | |
3826 | of "att" => ATT | |
3827 | | "attlist" => ATTLIST | |
3828 | | "ent" => ENT | |
3829 | | "not" => NOT | |
3830 | | _ => raise Failed NONE) fields | |
3831 | in setFlags whats | |
3832 | end | |
3833 | handle Failed _ => errorMustBe(key,yesNoWhat) | |
3834 | end | |
3835 | ||
3836 | fun do_noarg(key,valOpt,flag) = | |
3837 | case valOpt | |
3838 | of NONE => flag := true | |
3839 | | SOME _ => errorNoArg key | |
3840 | ||
3841 | fun do_yesno(key,valOpt,flag) = | |
3842 | case valOpt | |
3843 | of NONE => flag := true | |
3844 | | SOME "yes" => flag := true | |
3845 | | SOME "no" => flag := false | |
3846 | | SOME s => errorMustBe(key,yesNo) | |
3847 | ||
3848 | fun do_num(key,valOpt,flag) = | |
3849 | case valOpt | |
3850 | of NONE => errorMustBe(key,"a number") | |
3851 | | SOME s => flag := getNat s | |
3852 | handle Failed NONE => errorMustBe(key,"a number") | |
3853 | | Failed (SOME s) => doError s | |
3854 | ||
3855 | fun do_warn(key,valOpt) = | |
3856 | let val all = [O_WARN_MULT_ENUM,O_WARN_ATT_NO_ELEM, | |
3857 | O_WARN_MULT_ENT_DECL,O_WARN_MULT_NOT_DECL,O_WARN_MULT_ATT_DEF, | |
3858 | O_WARN_MULT_ATT_DECL,O_WARN_SHOULD_DECLARE,O_WARN_XML_DECL] | |
3859 | fun setFlags value = app (fn flag => flag := value) all | |
3860 | in case valOpt | |
3861 | of NONE => setFlags true | |
3862 | | SOME "all" => setFlags true | |
3863 | | SOME "none" => setFlags false | |
3864 | | SOME _ => errorMustBe(key,allNone) | |
3865 | end | |
3866 | ||
3867 | fun do_long(key,valOpt) = | |
3868 | case key | |
3869 | of "validate" => true before do_yesno(key,valOpt,O_VALIDATE) | |
3870 | | "compat" => true before do_yesno(key,valOpt,O_COMPATIBILITY) | |
3871 | | "compatibility" => true before do_yesno(key,valOpt,O_COMPATIBILITY) | |
3872 | | "interop" => true before do_yesno(key,valOpt,O_INTEROPERABILITY) | |
3873 | | "interoperability" => true before do_yesno(key,valOpt,O_INTEROPERABILITY) | |
3874 | ||
3875 | | "few-errors" => true before do_yesno(key,valOpt,O_ERROR_MINIMIZE) | |
3876 | ||
3877 | | "check-reserved" => true before do_yesno(key,valOpt,O_CHECK_RESERVED) | |
3878 | | "check-predef" => true before do_yesno(key,valOpt,O_CHECK_PREDEFINED) | |
3879 | | "check-predefined" => true before do_yesno(key,valOpt,O_CHECK_PREDEFINED) | |
3880 | | "check-lang-id" => true before do_yesno(key,valOpt,O_CHECK_LANGID) | |
3881 | | "check-iso639" => true before do_yesno(key,valOpt,O_CHECK_ISO639) | |
3882 | | "check-xml-version" => true before do_yesno(key,valOpt,O_CHECK_VERSION) | |
3883 | ||
3884 | | "warn" => true before do_warn(key,valOpt) | |
3885 | | "warn-xml-decl" => true before do_yesno(key,valOpt,O_WARN_XML_DECL) | |
3886 | | "warn-att-elem" => true before do_yesno(key,valOpt,O_WARN_ATT_NO_ELEM) | |
3887 | | "warn-predefined" => true before do_yesno(key,valOpt,O_WARN_SHOULD_DECLARE) | |
3888 | | "warn-mult-decl" => true before do_mult_decl(key,valOpt) | |
3889 | | "warn-uri" => true before do_yesno(key,valOpt,O_WARN_NON_ASCII_URI) | |
3890 | ||
3891 | | "include-ext" => true before do_yesno(key,valOpt,O_INCLUDE_EXT_PARSED) | |
3892 | | "include-external" => true before do_yesno(key,valOpt,O_INCLUDE_EXT_PARSED) | |
3893 | | "include-par" => true before do_yesno(key,valOpt,O_INCLUDE_PARAM_ENTS) | |
3894 | | "include-parameter" => true before do_yesno(key,valOpt,O_INCLUDE_PARAM_ENTS) | |
3895 | ||
3896 | | _ => false | |
3897 | ||
3898 | fun do_short cs = | |
3899 | let fun doOne c = | |
3900 | case c | |
3901 | of #"v" => false before O_VALIDATE := true | |
3902 | | #"c" => false before O_COMPATIBILITY := true | |
3903 | | #"i" => false before O_INTEROPERABILITY := true | |
3904 | | _ => true | |
3905 | in List.filter doOne cs | |
3906 | end | |
3907 | ||
3908 | fun do_neg cs = | |
3909 | let fun doOne c = | |
3910 | case c | |
3911 | of #"v" => false before O_VALIDATE := false | |
3912 | | #"c" => false before O_COMPATIBILITY := false | |
3913 | | #"i" => false before O_INTEROPERABILITY := false | |
3914 | | _ => true | |
3915 | in List.filter doOne cs | |
3916 | end | |
3917 | ||
3918 | and doit nil = nil | |
3919 | | doit (opt::opts) = | |
3920 | case opt | |
3921 | of OPT_NOOPT => opts | |
3922 | | OPT_LONG(key,value) => if do_long(key,value) then doit opts | |
3923 | else opt::doit opts | |
3924 | | OPT_SHORT cs => (case do_short cs | |
3925 | of nil => doit opts | |
3926 | | rest => OPT_SHORT rest::doit opts) | |
3927 | | OPT_NEG cs => (case do_neg cs | |
3928 | of nil => doit opts | |
3929 | | rest => OPT_NEG rest::doit opts) | |
3930 | | OPT_STRING s => opt::doit opts | |
3931 | ||
3932 | val opts1 = setDfaOptions (opts,doError) | |
3933 | in | |
3934 | doit opts1 | |
3935 | end | |
3936 | end | |
3937 | (* stop of ../../Parser/Params/parserOptions.sml *) | |
3938 | (* start of ../../Util/intLists.sml *) | |
3939 | signature IntLists = | |
3940 | sig | |
3941 | type IntList = int list | |
3942 | ||
3943 | val emptyIntList : IntList | |
3944 | val singleIntList : int -> IntList | |
3945 | val fullIntList : int -> IntList | |
3946 | ||
3947 | val isEmptyIntList : IntList -> bool | |
3948 | val inIntList : int * IntList -> bool | |
3949 | val subIntList : IntList * IntList -> bool | |
3950 | ||
3951 | val compareIntLists: IntList * IntList -> order | |
3952 | val hashIntList : IntList -> word | |
3953 | ||
3954 | val addIntList : int * IntList -> IntList | |
3955 | val delIntList : int * IntList -> IntList | |
3956 | ||
3957 | val cupIntLists : IntList * IntList -> IntList | |
3958 | val capIntLists : IntList * IntList -> IntList | |
3959 | val diffIntLists : IntList * IntList -> IntList | |
3960 | ||
3961 | val IntList2String : IntList -> string | |
3962 | end | |
3963 | ||
3964 | structure IntLists : IntLists = | |
3965 | struct | |
3966 | open UtilCompare UtilHash UtilInt UtilList UtilString | |
3967 | ||
3968 | type IntList = int list | |
3969 | ||
3970 | val emptyIntList = nil : IntList | |
3971 | ||
3972 | fun fullIntList n = intervalList(0,n) | |
3973 | fun singleIntList n = [n] | |
3974 | val isEmptyIntList = null | |
3975 | ||
3976 | val inIntList = elem Int.compare | |
3977 | val subIntList = sub Int.compare | |
3978 | val addIntList = insert Int.compare | |
3979 | val delIntList = delete Int.compare | |
3980 | val capIntLists = cap Int.compare | |
3981 | val cupIntLists = merge Int.compare | |
3982 | val diffIntLists = diff Int.compare | |
3983 | val compareIntLists = compareList Int.compare | |
3984 | val hashIntList = hashList hashInt | |
3985 | ||
3986 | val IntList2String = List2String Int.toString | |
3987 | end | |
3988 | (* stop of ../../Util/intLists.sml *) | |
3989 | (* start of ../../Unicode/Chars/dataDict.sml *) | |
3990 | ||
3991 | ||
3992 | ||
3993 | ||
3994 | ||
3995 | ||
3996 | ||
3997 | ||
3998 | structure KeyData : Key = | |
3999 | struct | |
4000 | type Key = UniChar.Data | |
4001 | ||
4002 | val null = UniChar.nullData | |
4003 | val hash = UniChar.hashData | |
4004 | val compare = UniChar.compareData | |
4005 | val toString = UniChar.Data2String | |
4006 | end | |
4007 | ||
4008 | structure DataDict = Dict (structure Key = KeyData) | |
4009 | structure DataSymTab = SymTable (structure Key = KeyData) | |
4010 | ||
4011 | ||
4012 | (* stop of ../../Unicode/Chars/dataDict.sml *) | |
4013 | (* start of ../../Parser/Dfa/dfaData.sml *) | |
4014 | ||
4015 | ||
4016 | ||
4017 | (*--------------------------------------------------------------------------*) | |
4018 | (* Structure: DfaData *) | |
4019 | (* *) | |
4020 | (* Depends on: *) | |
4021 | (* *) | |
4022 | (* Exceptions raised by functions in this structure: *) | |
4023 | (* boundsFollow : none *) | |
4024 | (* mergeFirst : ConflictFirst *) | |
4025 | (* mergeFollow : ConflictFollow *) | |
4026 | (*--------------------------------------------------------------------------*) | |
4027 | signature DfaData = | |
4028 | sig | |
4029 | type Dfa | |
4030 | ||
4031 | datatype ContentModel = | |
4032 | CM_ELEM of int | |
4033 | | CM_OPT of ContentModel | |
4034 | | CM_REP of ContentModel | |
4035 | | CM_PLUS of ContentModel | |
4036 | | CM_ALT of ContentModel list | |
4037 | | CM_SEQ of ContentModel list | |
4038 | end | |
4039 | ||
4040 | structure DfaBase = | |
4041 | struct | |
4042 | (*--- visible to the parser ---*) | |
4043 | datatype ContentModel = | |
4044 | CM_ELEM of int | |
4045 | | CM_OPT of ContentModel | |
4046 | | CM_REP of ContentModel | |
4047 | | CM_PLUS of ContentModel | |
4048 | | CM_ALT of ContentModel list | |
4049 | | CM_SEQ of ContentModel list | |
4050 | ||
4051 | type Sigma = int | |
4052 | type State = int | |
4053 | ||
4054 | val dfaDontCare = ~2 | |
4055 | val dfaError = ~1 | |
4056 | val dfaInitial = 0 | |
4057 | ||
4058 | exception DfaTooLarge of int | |
4059 | exception Ambiguous of Sigma * int * int | |
4060 | exception ConflictFirst of Sigma * State * State | |
4061 | exception ConflictFollow of Sigma * State * State | |
4062 | ||
4063 | type Empty = bool | |
4064 | type First = (State * Sigma) list | |
4065 | type Follow = First | |
4066 | ||
4067 | type Info = State * Empty * First | |
4068 | ||
4069 | datatype CM' = | |
4070 | ELEM of Sigma | |
4071 | | OPT of CM | |
4072 | | REP of CM | |
4073 | | PLUS of CM | |
4074 | | ALT of CM list | |
4075 | | SEQ of CM list | |
4076 | withtype CM = CM' * Info | |
4077 | ||
4078 | type Row = Sigma * Sigma * State vector * bool | |
4079 | val nullRow : Row = (1,0,Vector.fromList nil,false) | |
4080 | ||
4081 | type Dfa = Row vector | |
4082 | ||
4083 | val emptyDfa : Dfa = Vector.fromList [(1,0,Vector.fromList nil,true)] | |
4084 | end | |
4085 | ||
4086 | structure DfaData = DfaBase : DfaData | |
4087 | (* stop of ../../Parser/Dfa/dfaData.sml *) | |
4088 | (* start of ../../Unicode/Decode/decodeFile.sml *) | |
4089 | (*--------------------------------------------------------------------------*) | |
4090 | (* Structure: DecodeBasic *) | |
4091 | (* *) | |
4092 | (* Exceptions raised by functions in this structure: *) | |
4093 | (* closeFile : none *) | |
4094 | (* filePos : none *) | |
4095 | (* fileName : none *) | |
4096 | (* nextByte : EndOfFile *) | |
4097 | (* openFile : NoSuchFile *) | |
4098 | (*--------------------------------------------------------------------------*) | |
4099 | signature DecodeFile = | |
4100 | sig | |
4101 | structure Bytes : WORD | |
4102 | ||
4103 | type File | |
4104 | type Byte = Bytes.word | |
4105 | ||
4106 | exception EndOfFile of File | |
4107 | ||
4108 | val Char2Byte : UniChar.Char -> Byte | |
4109 | val Byte2Char : Byte -> UniChar.Char | |
4110 | val Byte2Hex : Byte -> string | |
4111 | ||
4112 | val openFile : Uri.Uri option -> File | |
4113 | val closeFile : File -> unit | |
4114 | ||
4115 | val getByte : File -> Byte * File | |
4116 | val ungetBytes : File * Byte list -> File | |
4117 | ||
4118 | val fileUri : File -> Uri.Uri | |
4119 | val fileName : File -> string | |
4120 | end | |
4121 | ||
4122 | structure DecodeFile : DecodeFile = | |
4123 | struct | |
4124 | open | |
4125 | UniChar Uri UtilError | |
4126 | ||
4127 | structure Bytes = Word8 | |
4128 | type Byte = Bytes.word | |
4129 | ||
4130 | fun Byte2Char b = Chars.fromLargeWord(Bytes.toLargeWord b) | |
4131 | fun Byte2Hex b = | |
4132 | "0x"^UtilString.toUpperString(StringCvt.padLeft #"0" 2 (Bytes.toString b)) | |
4133 | fun Char2Byte c = Bytes.fromLargeWord(Chars.toLargeWord c) | |
4134 | ||
4135 | type instream = TextIO.instream | |
4136 | val closeIn = TextIO.closeIn | |
4137 | val input = TextIO.input | |
4138 | val input1 = TextIO.input1 | |
4139 | val openIn = TextIO.openIn | |
4140 | val stdIn = TextIO.stdIn | |
4141 | ||
4142 | (*--------------------------------------------------------------------*) | |
4143 | (* a file type is stdin or a uri with its string representation and *) | |
4144 | (* the file it is mapped to. *) | |
4145 | (* a file position is a stream, an int position and a file type. *) | |
4146 | (* a file is a file position, a buffer, its size and current index. *) | |
4147 | (*--------------------------------------------------------------------*) | |
4148 | datatype FileType = STD | FNAME of (Uri * string * string * bool) | |
4149 | type FilePos = FileType * instream * int | |
4150 | type File = FilePos * Word8Vector.vector * int * int | |
4151 | ||
4152 | exception EndOfFile of File | |
4153 | val nullVec = Word8Vector.fromList nil | |
4154 | ||
4155 | (*--------------------------------------------------------------------*) | |
4156 | (* return the uri of a file. *) | |
4157 | (*--------------------------------------------------------------------*) | |
4158 | fun fileUri ((typ,_,_),_,_,_) = | |
4159 | case typ | |
4160 | of STD => emptyUri | |
4161 | | FNAME(uri,_,_,_) => uri | |
4162 | (*--------------------------------------------------------------------*) | |
4163 | (* return the uri string name of a file. *) | |
4164 | (*--------------------------------------------------------------------*) | |
4165 | fun fileName ((typ,_,_),_,_,_) = | |
4166 | case typ | |
4167 | of STD => "<stdin>" | |
4168 | | FNAME(_,str,_,_) => str | |
4169 | (*--------------------------------------------------------------------*) | |
4170 | (* return the uri string and the position in the the file. *) | |
4171 | (*--------------------------------------------------------------------*) | |
4172 | fun filePos ((typ,_,p),_,s,i) = | |
4173 | case typ | |
4174 | of STD => ("<stdin>",p+i-s) | |
4175 | | FNAME(_,str,_,_) => (str,p+i-s) | |
4176 | ||
4177 | (*--------------------------------------------------------------------*) | |
4178 | (* open a file; report IO errors by raising NoSuchFile. *) | |
4179 | (*--------------------------------------------------------------------*) | |
4180 | fun openFile uriOpt = | |
4181 | let val (typ,stream) = | |
4182 | case uriOpt | |
4183 | of NONE => (STD,stdIn) | |
4184 | | SOME uri => let val (str,fname,tmp) = retrieveUri uri | |
4185 | in (FNAME(uri,str,fname,tmp),openIn fname) | |
4186 | end | |
4187 | handle IO.Io {name,cause,...} | |
4188 | => raise NoSuchFile(name,exnMessage cause) | |
4189 | in ((typ,stream,0),nullVec,0,0) | |
4190 | end | |
4191 | ||
4192 | (*--------------------------------------------------------------------*) | |
4193 | (* close the file; ignore IO errors. *) | |
4194 | (*--------------------------------------------------------------------*) | |
4195 | fun closeStream (typ,stream,_) = | |
4196 | case typ | |
4197 | of STD => () | |
4198 | | FNAME(_,uri,fname,tmp) | |
4199 | => let val _ = closeIn stream handle IO.Io _ => () | |
4200 | val _ = (if tmp andalso OS.FileSys.access(fname,nil) | |
4201 | then OS.FileSys.remove fname else ()) | |
4202 | handle exn as OS.SysErr _ => | |
4203 | TextIO.output(TextIO.stdErr,String.concat | |
4204 | ["Error removing temporary file ",fname,"for URI",uri, | |
4205 | "(",exnMessage exn,")\n"]) | |
4206 | ||
4207 | in () | |
4208 | end | |
4209 | fun closeFile (tsp,_,_,_) = closeStream tsp | |
4210 | ||
4211 | (*--------------------------------------------------------------------*) | |
4212 | (* read a byte from the file; if at the end of buffer, reload it. *) | |
4213 | (* if a reload fails or returns an IO error, raise EndOfFile. --------*) | |
4214 | (*--------------------------------------------------------------------*) | |
4215 | fun getByte (tsp,vec,s,i) = | |
4216 | if i<s then (Word8Vector.sub(vec,i),(tsp,vec,s,i+1)) | |
4217 | else let val (typ,stream,pos) = tsp | |
4218 | val v = Byte.stringToBytes (input stream) handle IO.Io _ => nullVec | |
4219 | val s = Word8Vector.length v | |
4220 | in if s=0 then let val _ = closeStream tsp | |
4221 | in raise EndOfFile(tsp,v,0,0) | |
4222 | end | |
4223 | else (Word8Vector.sub(v,0),((typ,stream,pos+s),v,s,1)) | |
4224 | end | |
4225 | ||
4226 | (*--------------------------------------------------------------------*) | |
4227 | (* un-get some bytes. this should only happen while checking for a *) | |
4228 | (* byte-order mark or xml/text declaration. It should be efficient in *) | |
4229 | (* that case, otherwise might be very space-consuming. *) | |
4230 | (*--------------------------------------------------------------------*) | |
4231 | fun ungetBytes ((tsp,vec,s,i),bs) = | |
4232 | let val len = length bs | |
4233 | in if len<=i then (tsp,vec,s,i-len) | |
4234 | else let val diff = len-i | |
4235 | val vec0 = Word8Vector.fromList(List.take(bs,diff)) | |
4236 | in (tsp,Word8Vector.concat [vec0,vec],s+diff,0) | |
4237 | end | |
4238 | end | |
4239 | end | |
4240 | (* stop of ../../Unicode/Decode/decodeFile.sml *) | |
4241 | (* start of ../../Unicode/Decode/decodeError.sml *) | |
4242 | ||
4243 | ||
4244 | ||
4245 | ||
4246 | ||
4247 | (*--------------------------------------------------------------------------*) | |
4248 | (* Structure: DecodeError *) | |
4249 | (* *) | |
4250 | (* Exceptions raised by functions in this structure: *) | |
4251 | (* decodeMessage : none *) | |
4252 | (*--------------------------------------------------------------------------*) | |
4253 | signature DecodeError = | |
4254 | sig | |
4255 | datatype DecodeError = | |
4256 | ERR_ILLEGAL_CHAR of DecodeFile.Byte * string | |
4257 | | ERR_NON_UNI_UCS4 of UniChar.Char | |
4258 | | ERR_EOF_UCS4 of int * DecodeFile.Byte list | |
4259 | | ERR_NON_DIRECT_UTF7 of DecodeFile.Byte | |
4260 | | ERR_PADDING_UTF7 of UniChar.Char | |
4261 | | ERR_ILLFORMED_UTF8 of DecodeFile.Byte * int * int | |
4262 | | ERR_ILLEGAL_UTF8 of DecodeFile.Byte | |
4263 | | ERR_INVALID_UTF8_SEQ of DecodeFile.Byte list | |
4264 | | ERR_EOF_UTF8 of int * int | |
4265 | | ERR_NON_UNI_UTF8 of UniChar.Char * int | |
4266 | | ERR_EOF_UCS2 of DecodeFile.Byte | |
4267 | | ERR_EOF_UTF16 of DecodeFile.Byte | |
4268 | | ERR_LOW_SURROGATE of UniChar.Char | |
4269 | | ERR_HIGH_SURROGATE of UniChar.Char * UniChar.Char | |
4270 | | ERR_EOF_SURROGATE of UniChar.Char | |
4271 | | ERR_NO_ENC_DECL of string | |
4272 | | ERR_UNSUPPORTED_ENC of string | |
4273 | | ERR_INCOMPATIBLE_ENC of string * string | |
4274 | ||
4275 | val decodeMessage : DecodeError -> string list | |
4276 | ||
4277 | exception DecodeError of DecodeFile.File * bool * DecodeError | |
4278 | end | |
4279 | ||
4280 | structure DecodeError : DecodeError = | |
4281 | struct | |
4282 | open | |
4283 | DecodeFile UtilString UniChar | |
4284 | ||
4285 | datatype DecodeError = | |
4286 | ERR_ILLEGAL_CHAR of DecodeFile.Byte * string | |
4287 | | ERR_NON_UNI_UCS4 of UniChar.Char | |
4288 | | ERR_EOF_UCS4 of int * DecodeFile.Byte list | |
4289 | | ERR_NON_DIRECT_UTF7 of DecodeFile.Byte | |
4290 | | ERR_PADDING_UTF7 of UniChar.Char | |
4291 | | ERR_ILLFORMED_UTF8 of DecodeFile.Byte * int * int | |
4292 | | ERR_ILLEGAL_UTF8 of DecodeFile.Byte | |
4293 | | ERR_INVALID_UTF8_SEQ of DecodeFile.Byte list | |
4294 | | ERR_EOF_UTF8 of int * int | |
4295 | | ERR_NON_UNI_UTF8 of UniChar.Char * int | |
4296 | | ERR_EOF_UCS2 of DecodeFile.Byte | |
4297 | | ERR_EOF_UTF16 of DecodeFile.Byte | |
4298 | | ERR_LOW_SURROGATE of UniChar.Char | |
4299 | | ERR_HIGH_SURROGATE of UniChar.Char * UniChar.Char | |
4300 | | ERR_EOF_SURROGATE of UniChar.Char | |
4301 | | ERR_NO_ENC_DECL of string | |
4302 | | ERR_UNSUPPORTED_ENC of string | |
4303 | | ERR_INCOMPATIBLE_ENC of string * string | |
4304 | ||
4305 | fun Char2Hex c = "0x"^UtilString.toUpperString(StringCvt.padLeft #"0" 4 (Chars.toString c)) | |
4306 | ||
4307 | fun decodeMessage err = | |
4308 | case err | |
4309 | of ERR_ILLEGAL_CHAR(b,what) => | |
4310 | [Byte2Hex b,"is not",prependAnA what,"character"] | |
4311 | ||
4312 | | ERR_NON_UNI_UCS4 c => | |
4313 | ["UCS-4 coded non-Unicode character",Char2Uni c] | |
4314 | | ERR_EOF_UCS4(pos,bytes) => | |
4315 | ["End of file after",Int2String pos,"bytes of UCS-4 character", | |
4316 | "starting with ",List2String0 Byte2Hex bytes] | |
4317 | ||
4318 | | ERR_NON_DIRECT_UTF7 b => | |
4319 | ["Indirect UTF-7 character ",Byte2Hex b,"in non-shifted mode"] | |
4320 | | ERR_PADDING_UTF7 pad => | |
4321 | ["Non-zero padding",Char2Hex pad,"at end of UTF-7 shifted sequence"] | |
4322 | ||
4323 | | ERR_ILLFORMED_UTF8 (b,len,pos) => | |
4324 | [numberNth pos,"byte",Byte2Hex b,"of a",Int2String len^"-byte", | |
4325 | "UTF-8 sequence does not start with bits 10"] | |
4326 | | ERR_ILLEGAL_UTF8 b => | |
4327 | ["Byte",Byte2Hex b,"is neither ASCII nor does it start", | |
4328 | "a valid multi-byte UTF-8 sequence"] | |
4329 | | ERR_EOF_UTF8 (len,pos) => | |
4330 | ["End of file terminates a ",Int2String len^"-byte", | |
4331 | "UTF-8 sequence before the ",numberNth pos,"byte"] | |
4332 | | ERR_NON_UNI_UTF8 (c,len) => | |
4333 | [Int2String len^"-byte UTF-8 sequence decodes to non-Unicode character",Char2Uni c] | |
4334 | | ERR_INVALID_UTF8_SEQ bs => | |
4335 | ["Invalid UTF-8 sequence",List2xString (""," ","") Byte2Hex bs] | |
4336 | ||
4337 | | ERR_EOF_UCS2 b => | |
4338 | ["End of file before second byte of UCS-2 character starting with",Byte2Hex b] | |
4339 | | ERR_EOF_UTF16 b => | |
4340 | ["End of file before second byte of UTF-16 character starting with",Byte2Hex b] | |
4341 | ||
4342 | | ERR_LOW_SURROGATE c => | |
4343 | ["Low surrogate",Char2Uni c,"without preceding high surrogate"] | |
4344 | | ERR_HIGH_SURROGATE (c,c1) => | |
4345 | ["High surrogate",Char2Uni c,"followed by",Char2Uni c1,"instead of low surrogate"] | |
4346 | | ERR_EOF_SURROGATE c => | |
4347 | ["High surrogate",Char2Uni c,"followed by the end of file"] | |
4348 | ||
4349 | | ERR_NO_ENC_DECL auto => | |
4350 | ["Couldn't parse encoding declaration but auto-detected encoding",auto,"required so"] | |
4351 | | ERR_UNSUPPORTED_ENC enc => | |
4352 | ["Unsupported encoding",enc] | |
4353 | | ERR_INCOMPATIBLE_ENC (enc,auto) => | |
4354 | ["Encoding",enc,"is incompatible with auto-detected encoding",auto] | |
4355 | ||
4356 | exception DecodeError of File * bool * DecodeError | |
4357 | end | |
4358 | ||
4359 | ||
4360 | (* stop of ../../Unicode/Decode/decodeError.sml *) | |
4361 | (* start of ../../Unicode/Decode/decodeUtil.sml *) | |
4362 | (* | |
4363 | require "basis.__word"; | |
4364 | require "basis.__word8"; | |
4365 | ||
4366 | require "chars"; | |
4367 | require "decodeBasic"; | |
4368 | require "decodeError"; | |
4369 | *) | |
4370 | ||
4371 | (*--------------------------------------------------------------------------*) | |
4372 | (* Structure: DecodeUtil *) | |
4373 | (* *) | |
4374 | (* Exceptions raised by functions in this structure: *) | |
4375 | (* combineSurrogates : none *) | |
4376 | (* combineUcs4big : none *) | |
4377 | (* combineUcs4little : none *) | |
4378 | (* combineUcs4strangeBig : none *) | |
4379 | (* combineUcs4strangeLittle : none *) | |
4380 | (* combineUtf16big : none *) | |
4381 | (* combineUtf16little : none *) | |
4382 | (* isLowSurrogate : none *) | |
4383 | (* isHighSurrogate : none *) | |
4384 | (* isSurrogate : none *) | |
4385 | (*--------------------------------------------------------------------------*) | |
4386 | signature DecodeUtil = | |
4387 | sig | |
4388 | val isSurrogate : UniChar.Char -> bool | |
4389 | val isLowSurrogate : UniChar.Char -> bool | |
4390 | val isHighSurrogate : UniChar.Char -> bool | |
4391 | val combineSurrogates : UniChar.Char * UniChar.Char -> UniChar.Char | |
4392 | end | |
4393 | ||
4394 | structure DecodeUtil : DecodeUtil = | |
4395 | struct | |
4396 | open UniChar DecodeFile DecodeError | |
4397 | ||
4398 | fun isSurrogate c = Chars.orb(c,0wx7FF)=0wxDFFF | |
4399 | fun isLowSurrogate c = Chars.orb(c,0wx3FF)=0wxDFFF | |
4400 | fun isHighSurrogate c = Chars.orb(c,0wx3FF)=0wxDBFF | |
4401 | fun combineSurrogates(hi,lo) = (hi-0wxD800)*0wx400+lo+0wx2400 : Char | |
4402 | end | |
4403 | (* stop of ../../Unicode/Decode/decodeUtil.sml *) | |
4404 | (* start of ../../Unicode/Decode/decodeUcs2.sml *) | |
4405 | ||
4406 | ||
4407 | ||
4408 | ||
4409 | ||
4410 | ||
4411 | ||
4412 | signature DecodeUcs2 = | |
4413 | sig | |
4414 | val getCharUcs2b : DecodeFile.File -> UniChar.Char * DecodeFile.File | |
4415 | val getCharUcs2l : DecodeFile.File -> UniChar.Char * DecodeFile.File | |
4416 | end | |
4417 | ||
4418 | structure DecodeUcs2 : DecodeUcs2 = | |
4419 | struct | |
4420 | open | |
4421 | UniChar Encoding | |
4422 | DecodeFile DecodeError DecodeUtil | |
4423 | ||
4424 | fun getCharUcs2b f = | |
4425 | let | |
4426 | val (b1,f1) = getByte f | |
4427 | val (b2,f2) = getByte f1 handle exn as EndOfFile f | |
4428 | => raise DecodeError(f,true,ERR_EOF_UCS2 b1) | |
4429 | val c = Chars.orb(Chars.<<(Byte2Char b1,0w8),Byte2Char b2) | |
4430 | in (c,f2) | |
4431 | end | |
4432 | ||
4433 | fun getCharUcs2l f = | |
4434 | let | |
4435 | val (b1,f1) = getByte f | |
4436 | val (b2,f2) = getByte f1 handle exn as EndOfFile f | |
4437 | => raise DecodeError(f,true,ERR_EOF_UCS2 b1) | |
4438 | val c = Chars.orb(Chars.<<(Byte2Char b2,0w8),Byte2Char b1) | |
4439 | in (c,f2) | |
4440 | end | |
4441 | end | |
4442 | (* stop of ../../Unicode/Decode/decodeUcs2.sml *) | |
4443 | (* start of ../../Unicode/Decode/decodeMisc.sml *) | |
4444 | signature DecodeMisc = | |
4445 | sig | |
4446 | val getCharAscii : DecodeFile.File -> UniChar.Char * DecodeFile.File | |
4447 | val getCharEbcdic : DecodeFile.File -> UniChar.Char * DecodeFile.File | |
4448 | val getCharEof : DecodeFile.File -> UniChar.Char * DecodeFile.File | |
4449 | val getCharLatin1 : DecodeFile.File -> UniChar.Char * DecodeFile.File | |
4450 | end | |
4451 | ||
4452 | structure DecodeMisc : DecodeMisc = | |
4453 | struct | |
4454 | open | |
4455 | UniChar DecodeFile DecodeError | |
4456 | ||
4457 | fun getCharEof f = raise EndOfFile f | |
4458 | ||
4459 | (*--------------------------------------------------------------------*) | |
4460 | (* ASCII characters must be lower than 0wx80 *) | |
4461 | (*--------------------------------------------------------------------*) | |
4462 | fun getCharAscii f = | |
4463 | let val (b,f1) = getByte f | |
4464 | in if b<0wx80 then (Byte2Char b,f1) | |
4465 | else raise DecodeError(f1,false,ERR_ILLEGAL_CHAR(b,"ASCII")) | |
4466 | end | |
4467 | ||
4468 | (*--------------------------------------------------------------------*) | |
4469 | (* LATIN-1 is the first plane of Unicode. *) | |
4470 | (*--------------------------------------------------------------------*) | |
4471 | fun getCharLatin1 f = let val (b,f1) = getByte f | |
4472 | in (Byte2Char b,f1) | |
4473 | end | |
4474 | ||
4475 | (*--------------------------------------------------------------------*) | |
4476 | (* EBCDIC is mapped to the first plane of Unicode. *) | |
4477 | (*--------------------------------------------------------------------*) | |
4478 | (* according to rfc-1345 (and gnu recode experiments) *) | |
4479 | val ebcdic2latinTab = Vector.fromList | |
4480 | [0wx00,0wx01,0wx02,0wx03,0wx9C,0wx09,0wx86,0wx7F, | |
4481 | 0wx97,0wx8D,0wx8E,0wx0B,0wx0C,0wx0D,0wx0E,0wx0F, | |
4482 | 0wx10,0wx11,0wx12,0wx13,0wx9D,0wx85,0wx08,0wx87, | |
4483 | 0wx18,0wx19,0wx92,0wx8F,0wx1C,0wx1D,0wx1E,0wx1F, | |
4484 | 0wx80,0wx81,0wx82,0wx83,0wx84,0wx0A,0wx17,0wx1B, | |
4485 | 0wx88,0wx89,0wx8A,0wx8B,0wx8C,0wx05,0wx06,0wx07, | |
4486 | 0wx90,0wx91,0wx16,0wx93,0wx94,0wx95,0wx96,0wx04, | |
4487 | 0wx98,0wx99,0wx9A,0wx9B,0wx14,0wx15,0wx9E,0wx1A, | |
4488 | 0wx20,0wxA0,0wxA1,0wxA2,0wxA3,0wxA4,0wxA5,0wxA6, | |
4489 | 0wxA7,0wxA8,0wx5B,0wx2E,0wx3C,0wx28,0wx2B,0wx21, | |
4490 | 0wx26,0wxA9,0wxAA,0wxAB,0wxAC,0wxAD,0wxAE,0wxAF, | |
4491 | 0wxB0,0wxB1,0wx5D,0wx24,0wx2A,0wx29,0wx3B,0wx5E, | |
4492 | 0wx2D,0wx2F,0wxB2,0wxB3,0wxB4,0wxB5,0wxB6,0wxB7, | |
4493 | 0wxB8,0wxB9,0wx7C,0wx2C,0wx25,0wx5F,0wx3E,0wx3F, | |
4494 | 0wxBA,0wxBB,0wxBC,0wxBD,0wxBE,0wxBF,0wxC0,0wxC1, | |
4495 | 0wxC2,0wx60,0wx3A,0wx23,0wx40,0wx27,0wx3D,0wx22, | |
4496 | 0wxC3,0wx61,0wx62,0wx63,0wx64,0wx65,0wx66,0wx67, | |
4497 | 0wx68,0wx69,0wxC4,0wxC5,0wxC6,0wxC7,0wxC8,0wxC9, | |
4498 | 0wxCA,0wx6A,0wx6B,0wx6C,0wx6D,0wx6E,0wx6F,0wx70, | |
4499 | 0wx71,0wx72,0wxCB,0wxCC,0wxCD,0wxCE,0wxCF,0wxD0, | |
4500 | 0wxD1,0wx7E,0wx73,0wx74,0wx75,0wx76,0wx77,0wx78, | |
4501 | 0wx79,0wx7A,0wxD2,0wxD3,0wxD4,0wxD5,0wxD6,0wxD7, | |
4502 | 0wxD8,0wxD9,0wxDA,0wxDB,0wxDC,0wxDD,0wxDE,0wxDF, | |
4503 | 0wxE0,0wxE1,0wxE2,0wxE3,0wxE4,0wxE5,0wxE6,0wxE7, | |
4504 | 0wx7B,0wx41,0wx42,0wx43,0wx44,0wx45,0wx46,0wx47, | |
4505 | 0wx48,0wx49,0wxE8,0wxE9,0wxEA,0wxEB,0wxEC,0wxED, | |
4506 | 0wx7D,0wx4A,0wx4B,0wx4C,0wx4D,0wx4E,0wx4F,0wx50, | |
4507 | 0wx51,0wx52,0wxEE,0wxEF,0wxF0,0wxF1,0wxF2,0wxF3, | |
4508 | 0wx5C,0wx9F,0wx53,0wx54,0wx55,0wx56,0wx57,0wx58, | |
4509 | 0wx59,0wx5A,0wxF4,0wxF5,0wxF6,0wxF7,0wxF8,0wxF9, | |
4510 | 0wx30,0wx31,0wx32,0wx33,0wx34,0wx35,0wx36,0wx37, | |
4511 | 0wx38,0wx39,0wxFA,0wxFB,0wxFC,0wxFD,0wxFE,0wxFF | |
4512 | ] | |
4513 | ||
4514 | fun ebcdic2latin b = Vector.sub(ebcdic2latinTab,Word8.toInt b) | |
4515 | ||
4516 | fun getCharEbcdic f = let val (b,f1) = getByte f | |
4517 | in (ebcdic2latin b,f1) | |
4518 | end | |
4519 | end | |
4520 | (* stop of ../../Unicode/Decode/decodeMisc.sml *) | |
4521 | (* start of ../../Unicode/Decode/decodeUcs4.sml *) | |
4522 | ||
4523 | ||
4524 | ||
4525 | ||
4526 | ||
4527 | ||
4528 | ||
4529 | ||
4530 | signature DecodeUcs4 = | |
4531 | sig | |
4532 | val getCharUcs4b : DecodeFile.File -> UniChar.Char * DecodeFile.File | |
4533 | val getCharUcs4l : DecodeFile.File -> UniChar.Char * DecodeFile.File | |
4534 | val getCharUcs4sb : DecodeFile.File -> UniChar.Char * DecodeFile.File | |
4535 | val getCharUcs4sl : DecodeFile.File -> UniChar.Char * DecodeFile.File | |
4536 | end | |
4537 | ||
4538 | structure DecodeUcs4 : DecodeUcs4 = | |
4539 | struct | |
4540 | open | |
4541 | UniChar UniClasses | |
4542 | DecodeFile DecodeError DecodeUtil | |
4543 | ||
4544 | fun getCharUcs4b f = | |
4545 | let | |
4546 | val (b1,f1) = getByte f | |
4547 | val (b2,f2) = getByte f1 handle EndOfFile f | |
4548 | => raise DecodeError(f,true,ERR_EOF_UCS4(1,[b1])) | |
4549 | val (b3,f3) = getByte f2 handle EndOfFile f | |
4550 | => raise DecodeError(f,true,ERR_EOF_UCS4(1,[b1,b2])) | |
4551 | val (b4,f4) = getByte f3 handle EndOfFile f | |
4552 | => raise DecodeError(f,true,ERR_EOF_UCS4(1,[b1,b2,b3])) | |
4553 | val c = Chars.orb(Chars.orb(Chars.<<(Byte2Char b1,0w24), | |
4554 | Chars.<<(Byte2Char b2,0w16)), | |
4555 | Chars.orb(Chars.<<(Byte2Char b3,0w08), | |
4556 | Byte2Char b4)) | |
4557 | in if isUnicode c then (c,f4) | |
4558 | else raise DecodeError(f4,false,ERR_NON_UNI_UCS4 c) | |
4559 | end | |
4560 | ||
4561 | fun getCharUcs4l f = | |
4562 | let | |
4563 | val (b1,f1) = getByte f | |
4564 | val (b2,f2) = getByte f1 handle EndOfFile f | |
4565 | => raise DecodeError(f,true,ERR_EOF_UCS4(1,[b1])) | |
4566 | val (b3,f3) = getByte f2 handle EndOfFile f | |
4567 | => raise DecodeError(f,true,ERR_EOF_UCS4(1,[b1,b2])) | |
4568 | val (b4,f4) = getByte f3 handle EndOfFile f | |
4569 | => raise DecodeError(f,true,ERR_EOF_UCS4(1,[b1,b2,b3])) | |
4570 | val c = Chars.orb(Chars.orb(Chars.<<(Byte2Char b4,0w24), | |
4571 | Chars.<<(Byte2Char b3,0w16)), | |
4572 | Chars.orb(Chars.<<(Byte2Char b2,0w08), | |
4573 | Byte2Char b1)) | |
4574 | in if isUnicode c then (c,f4) | |
4575 | else raise DecodeError(f4,false,ERR_NON_UNI_UCS4 c) | |
4576 | end | |
4577 | ||
4578 | fun getCharUcs4sb f = | |
4579 | let | |
4580 | val (b1,f1) = getByte f | |
4581 | val (b2,f2) = getByte f1 handle EndOfFile f | |
4582 | => raise DecodeError(f,true,ERR_EOF_UCS4(1,[b1])) | |
4583 | val (b3,f3) = getByte f2 handle EndOfFile f | |
4584 | => raise DecodeError(f,true,ERR_EOF_UCS4(1,[b1,b2])) | |
4585 | val (b4,f4) = getByte f3 handle EndOfFile f | |
4586 | => raise DecodeError(f,true,ERR_EOF_UCS4(1,[b1,b2,b3])) | |
4587 | val c = Chars.orb(Chars.orb(Chars.<<(Byte2Char b2,0w24), | |
4588 | Chars.<<(Byte2Char b1,0w16)), | |
4589 | Chars.orb(Chars.<<(Byte2Char b4,0w08), | |
4590 | Byte2Char b3)) | |
4591 | in if isUnicode c then (c,f4) | |
4592 | else raise DecodeError(f4,false,ERR_NON_UNI_UCS4 c) | |
4593 | end | |
4594 | ||
4595 | fun getCharUcs4sl f = | |
4596 | let | |
4597 | val (b1,f1) = getByte f | |
4598 | val (b2,f2) = getByte f1 handle EndOfFile f | |
4599 | => raise DecodeError(f,true,ERR_EOF_UCS4(1,[b1])) | |
4600 | val (b3,f3) = getByte f2 handle EndOfFile f | |
4601 | => raise DecodeError(f,true,ERR_EOF_UCS4(1,[b1,b2])) | |
4602 | val (b4,f4) = getByte f3 handle EndOfFile f | |
4603 | => raise DecodeError(f,true,ERR_EOF_UCS4(1,[b1,b2,b3])) | |
4604 | val c = Chars.orb(Chars.orb(Chars.<<(Byte2Char b3,0w24), | |
4605 | Chars.<<(Byte2Char b4,0w16)), | |
4606 | Chars.orb(Chars.<<(Byte2Char b1,0w08), | |
4607 | Byte2Char b2)) | |
4608 | in if isUnicode c then (c,f4) | |
4609 | else raise DecodeError(f4,false,ERR_NON_UNI_UCS4 c) | |
4610 | end | |
4611 | end | |
4612 | ||
4613 | (* stop of ../../Unicode/Decode/decodeUcs4.sml *) | |
4614 | (* start of ../../Unicode/Decode/decodeUtf16.sml *) | |
4615 | ||
4616 | ||
4617 | ||
4618 | ||
4619 | ||
4620 | ||
4621 | ||
4622 | signature DecodeUtf16 = | |
4623 | sig | |
4624 | val getCharUtf16b : DecodeFile.File -> UniChar.Char * DecodeFile.File | |
4625 | val getCharUtf16l : DecodeFile.File -> UniChar.Char * DecodeFile.File | |
4626 | end | |
4627 | ||
4628 | structure DecodeUtf16 : DecodeUtf16 = | |
4629 | struct | |
4630 | open | |
4631 | UniChar Encoding | |
4632 | DecodeFile DecodeError DecodeUtil | |
4633 | ||
4634 | fun getCharUtf16b f = | |
4635 | let | |
4636 | val (b1,f1) = getByte f | |
4637 | val (b2,f2) = getByte f1 handle exn as EndOfFile f | |
4638 | => raise DecodeError(f,true,ERR_EOF_UTF16 b1) | |
4639 | val c = Chars.orb(Chars.<<(Byte2Char b1,0w8),Byte2Char b2) | |
4640 | in | |
4641 | if isSurrogate c then (* Chars.orb(c,0wx7FF)=0wxDFFF *) | |
4642 | if isLowSurrogate c then raise DecodeError(f2,false,ERR_LOW_SURROGATE c) | |
4643 | else let | |
4644 | val (b3,f3) = getByte f2 handle exn as EndOfFile f | |
4645 | => raise DecodeError(f,true,ERR_EOF_SURROGATE c) | |
4646 | val (b4,f4) = getByte f3 handle exn as EndOfFile f | |
4647 | => raise DecodeError(f,true,ERR_EOF_UTF16 b3) | |
4648 | val c1 = Chars.orb(Chars.<<(Byte2Char b3,0w8),Byte2Char b4) | |
4649 | in if isLowSurrogate c1 then (combineSurrogates(c,c1),f4) | |
4650 | else raise DecodeError(f4,false,ERR_HIGH_SURROGATE(c,c1)) | |
4651 | end | |
4652 | else (c,f2) | |
4653 | end | |
4654 | ||
4655 | fun getCharUtf16l f = | |
4656 | let | |
4657 | val (b1,f1) = getByte f | |
4658 | val (b2,f2) = getByte f1 handle exn as EndOfFile f | |
4659 | => raise DecodeError(f,true,ERR_EOF_UTF16 b1) | |
4660 | val c = Chars.orb(Chars.<<(Byte2Char b2,0w8),Byte2Char b1) | |
4661 | in | |
4662 | if isSurrogate c then | |
4663 | if isLowSurrogate c then raise DecodeError(f2,false,ERR_LOW_SURROGATE c) | |
4664 | else let | |
4665 | val (b3,f3) = getByte f2 handle exn as EndOfFile f | |
4666 | => raise DecodeError(f,true,ERR_EOF_SURROGATE c) | |
4667 | val (b4,f4) = getByte f3 handle exn as EndOfFile f | |
4668 | => raise DecodeError(f,true,ERR_EOF_UTF16 b3) | |
4669 | val c1 = Chars.orb(Chars.<<(Byte2Char b4,0w8),Byte2Char b3) | |
4670 | in if isLowSurrogate c1 then (combineSurrogates(c,c1),f4) | |
4671 | else raise DecodeError(f4,false,ERR_HIGH_SURROGATE(c,c1)) | |
4672 | end | |
4673 | else (c,f2) | |
4674 | end | |
4675 | end | |
4676 | (* stop of ../../Unicode/Decode/decodeUtf16.sml *) | |
4677 | (* start of ../../Unicode/Decode/decodeUtf8.sml *) | |
4678 | signature DecodeUtf8 = | |
4679 | sig | |
4680 | val getCharUtf8 : DecodeFile.File -> UniChar.Char * DecodeFile.File | |
4681 | end | |
4682 | ||
4683 | structure DecodeUtf8 : DecodeUtf8 = | |
4684 | struct | |
4685 | open | |
4686 | UniChar UniClasses UtilError UtilInt | |
4687 | DecodeFile DecodeError DecodeUtil | |
4688 | ||
4689 | val THIS_MODULE = "DecodeUtf8" | |
4690 | ||
4691 | infix 8 <<< | |
4692 | infix 7 && | |
4693 | infix 6 ||| | |
4694 | ||
4695 | val op && = Bytes.andb | |
4696 | val op <<< = Chars.<< | |
4697 | val op ||| = Chars.orb | |
4698 | ||
4699 | val byte1switch = Vector.tabulate | |
4700 | (256,fn i => | |
4701 | if i<0x80 then 1 | |
4702 | else if i<0xC0 then 0 | |
4703 | else if i<0xE0 then 2 | |
4704 | else if i<0xF0 then 3 | |
4705 | else if i<0xF8 then 4 | |
4706 | else if i<0xFC then 5 | |
4707 | else if i<0xFE then 6 | |
4708 | else 0) | |
4709 | ||
4710 | val diff2 : Char = 0wx00003080 | |
4711 | val diff3 : Char = diff2 <<< 0wx6 ||| 0wx00020080 | |
4712 | val diff4 : Char = diff3 <<< 0wx6 ||| 0wx00400080 | |
4713 | val diff5 : Char = diff4 <<< 0wx6 ||| 0wx08000080 | |
4714 | val diff6 : Char = diff5 <<< 0wx6 ||| 0wx00000080 | |
4715 | ||
4716 | fun getCharUtf8 f = | |
4717 | let val (b1,f1) = getByte f | |
4718 | in if b1<0wx80 then (Byte2Char b1,f1) | |
4719 | else let val n = Vector.sub(byte1switch,Word8.toInt b1) | |
4720 | in case n | |
4721 | of 0 (* error *) => raise DecodeError(f1,false,ERR_ILLEGAL_UTF8 b1) | |
4722 | | 1 => (Byte2Char b1,f1) | |
4723 | | 2 => | |
4724 | let | |
4725 | val (b2,f2) = getByte f1 handle EndOfFile f | |
4726 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,2)) | |
4727 | in if b2 && 0wxC0 <> 0wx80 | |
4728 | then raise DecodeError(f2,false,ERR_ILLFORMED_UTF8(b2,n,2)) | |
4729 | else let val c = Byte2Char b1 <<< 0w6 + Byte2Char b2 - diff2 | |
4730 | in if c>=0wx80 then (c,f2) | |
4731 | else raise DecodeError(f2,false,ERR_INVALID_UTF8_SEQ [b1,b2]) | |
4732 | end | |
4733 | end | |
4734 | | 3 => | |
4735 | let | |
4736 | val (b2,f2) = getByte f1 handle EndOfFile f | |
4737 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,2)) | |
4738 | val (b3,f3) = getByte f2 handle EndOfFile f | |
4739 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,3)) | |
4740 | in | |
4741 | if b2 && 0wxC0 <> 0wx80 | |
4742 | then raise DecodeError(f3,false,ERR_ILLFORMED_UTF8(b2,n,2)) | |
4743 | else if b3 && 0wxC0 <> 0wx80 | |
4744 | then raise DecodeError(f3,false,ERR_ILLFORMED_UTF8(b2,n,3)) | |
4745 | else let val c = (Byte2Char b1 <<< 0w12 + | |
4746 | Byte2Char b2 <<< 0w06 + | |
4747 | Byte2Char b3 - diff3) | |
4748 | in if c>=0wx800 then (c,f3) | |
4749 | else raise DecodeError | |
4750 | (f3,false,ERR_INVALID_UTF8_SEQ [b1,b2,b3]) | |
4751 | end | |
4752 | end | |
4753 | | 4 => | |
4754 | let | |
4755 | val (b2,f2) = getByte f1 handle EndOfFile f | |
4756 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,2)) | |
4757 | val (b3,f3) = getByte f2 handle EndOfFile f | |
4758 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,3)) | |
4759 | val (b4,f4) = getByte f3 handle EndOfFile f | |
4760 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,4)) | |
4761 | in | |
4762 | if b2 && 0wxC0 <> 0wx80 | |
4763 | then raise DecodeError(f4,false,ERR_ILLFORMED_UTF8(b2,n,2)) | |
4764 | else if b3 && 0wxC0 <> 0wx80 | |
4765 | then raise DecodeError(f4,false,ERR_ILLFORMED_UTF8(b2,n,3)) | |
4766 | else if b4 && 0wxC0 <> 0wx80 | |
4767 | then raise DecodeError(f4,false,ERR_ILLFORMED_UTF8(b2,n,4)) | |
4768 | else let val c = (Byte2Char b1 <<< 0w18 + | |
4769 | Byte2Char b2 <<< 0w12 + | |
4770 | Byte2Char b3 <<< 0w06 + | |
4771 | Byte2Char b4 - diff4) | |
4772 | in | |
4773 | if c>=0wx100000 andalso c<=0wx10FFFF then (c,f4) | |
4774 | else if c<0wx10000 | |
4775 | then raise DecodeError | |
4776 | (f4,false,ERR_INVALID_UTF8_SEQ [b1,b2,b3,b4]) | |
4777 | else raise DecodeError | |
4778 | (f4,false,ERR_NON_UNI_UTF8(c,n)) | |
4779 | end | |
4780 | end | |
4781 | | 5 => | |
4782 | let | |
4783 | val (b2,f2) = getByte f1 handle EndOfFile f | |
4784 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,2)) | |
4785 | val (b3,f3) = getByte f2 handle EndOfFile f | |
4786 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,3)) | |
4787 | val (b4,f4) = getByte f3 handle EndOfFile f | |
4788 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,4)) | |
4789 | val (b5,f5) = getByte f4 handle EndOfFile f | |
4790 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,5)) | |
4791 | in | |
4792 | if b2 && 0wxC0 <> 0wx80 | |
4793 | then raise DecodeError(f5,false,ERR_ILLFORMED_UTF8(b2,n,2)) | |
4794 | else if b3 && 0wxC0 <> 0wx80 | |
4795 | then raise DecodeError(f5,false,ERR_ILLFORMED_UTF8(b2,n,3)) | |
4796 | else if b4 && 0wxC0 <> 0wx80 | |
4797 | then raise DecodeError(f5,false,ERR_ILLFORMED_UTF8(b2,n,4)) | |
4798 | else if b5 && 0wxC0 <> 0wx80 | |
4799 | then raise DecodeError(f5,false,ERR_ILLFORMED_UTF8(b2,n,5)) | |
4800 | else let val c = (Byte2Char b1 <<< 0w24 + | |
4801 | Byte2Char b2 <<< 0w18 + | |
4802 | Byte2Char b3 <<< 0w12 + | |
4803 | Byte2Char b4 <<< 0w06 + | |
4804 | Byte2Char b5 - diff5) | |
4805 | in if c<0wx200000 | |
4806 | then raise DecodeError | |
4807 | (f5,false,ERR_INVALID_UTF8_SEQ [b1,b2,b3,b4,b5]) | |
4808 | else raise DecodeError | |
4809 | (f5,false,ERR_NON_UNI_UTF8(c,n)) | |
4810 | end | |
4811 | end | |
4812 | | 6 => | |
4813 | let | |
4814 | val (b2,f2) = getByte f1 handle EndOfFile f | |
4815 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,2)) | |
4816 | val (b3,f3) = getByte f2 handle EndOfFile f | |
4817 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,3)) | |
4818 | val (b4,f4) = getByte f3 handle EndOfFile f | |
4819 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,4)) | |
4820 | val (b5,f5) = getByte f4 handle EndOfFile f | |
4821 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,5)) | |
4822 | val (b6,f6) = getByte f5 handle EndOfFile f | |
4823 | => raise DecodeError(f,true,ERR_EOF_UTF8(n,6)) | |
4824 | in | |
4825 | if b2 && 0wxC0 <> 0wx80 | |
4826 | then raise DecodeError(f6,false,ERR_ILLFORMED_UTF8(b2,n,2)) | |
4827 | else if b3 && 0wxC0 <> 0wx80 | |
4828 | then raise DecodeError(f6,false,ERR_ILLFORMED_UTF8(b2,n,3)) | |
4829 | else if b4 && 0wxC0 <> 0wx80 | |
4830 | then raise DecodeError(f6,false,ERR_ILLFORMED_UTF8(b2,n,4)) | |
4831 | else if b5 && 0wxC0 <> 0wx80 | |
4832 | then raise DecodeError(f6,false,ERR_ILLFORMED_UTF8(b2,n,5)) | |
4833 | else if b6 && 0wxC0 <> 0wx80 | |
4834 | then raise DecodeError(f6,false,ERR_ILLFORMED_UTF8(b2,n,6)) | |
4835 | else let val c = (Byte2Char b1 <<< 0w30 + | |
4836 | Byte2Char b2 <<< 0w24 + | |
4837 | Byte2Char b3 <<< 0w18 + | |
4838 | Byte2Char b4 <<< 0w12 + | |
4839 | Byte2Char b5 <<< 0w06 + | |
4840 | Byte2Char b6 - diff6) | |
4841 | in if c<0wx4000000 | |
4842 | then raise DecodeError | |
4843 | (f6,false,ERR_INVALID_UTF8_SEQ [b1,b2,b3,b4,b5,b6]) | |
4844 | else raise DecodeError | |
4845 | (f6,false,ERR_NON_UNI_UTF8(c,n)) | |
4846 | end | |
4847 | end | |
4848 | | _ => raise InternalError(THIS_MODULE,"getCharUtf8", | |
4849 | "byte1switch holds "^Int.toString n^ | |
4850 | ">6 for byte "^Bytes.toString b1) | |
4851 | end | |
4852 | end | |
4853 | end | |
4854 | (* stop of ../../Unicode/Decode/decodeUtf8.sml *) | |
4855 | (* start of ../../Unicode/Decode/decode.sml *) | |
4856 | (*--------------------------------------------------------------------------*) | |
4857 | (* Structure: Decode *) | |
4858 | (* *) | |
4859 | (* Exceptions raised by functions in this structure: *) | |
4860 | (* checkEncoding : NoSuchFile *) | |
4861 | (* encCloseFile : none *) | |
4862 | (* encFileName : none *) | |
4863 | (*--------------------------------------------------------------------------*) | |
4864 | signature Decode = | |
4865 | sig | |
4866 | structure Error : DecodeError | |
4867 | ||
4868 | type DecFile | |
4869 | ||
4870 | exception DecEof of DecFile | |
4871 | exception DecError of DecFile * bool * Error.DecodeError | |
4872 | ||
4873 | val decUri : DecFile -> Uri.Uri | |
4874 | val decName : DecFile -> string | |
4875 | val decEncoding : DecFile -> Encoding.Encoding | |
4876 | ||
4877 | val decOpenXml : Uri.Uri option -> DecFile | |
4878 | val decOpenUni : Uri.Uri option * Encoding.Encoding -> DecFile | |
4879 | val decClose : DecFile -> DecFile | |
4880 | ||
4881 | val decCommit : DecFile -> unit | |
4882 | val decSwitch : DecFile * string -> DecFile | |
4883 | ||
4884 | val decGetChar : DecFile -> UniChar.Char * DecFile | |
4885 | val decGetArray : DecFile -> UniChar.Char array -> int * DecFile * Error.DecodeError option | |
4886 | end | |
4887 | ||
4888 | structure Decode : Decode = | |
4889 | struct | |
4890 | structure Error = DecodeError | |
4891 | open | |
4892 | UniChar Encoding Error | |
4893 | DecodeFile DecodeMisc DecodeUcs2 DecodeUcs4 | |
4894 | DecodeUtf16 DecodeUtf8 DecodeUtil | |
4895 | ||
4896 | type DecFile = Encoding * File | |
4897 | exception DecEof of DecFile | |
4898 | exception DecError of DecFile * bool * DecodeError | |
4899 | ||
4900 | (*--------------------------------------------------------------------*) | |
4901 | (* close an encoded entity. *) | |
4902 | (*--------------------------------------------------------------------*) | |
4903 | fun decClose (_,f) = (NOENC,f) before closeFile f | |
4904 | (*--------------------------------------------------------------------*) | |
4905 | (* get the uri string of an encoded entity. *) | |
4906 | (*--------------------------------------------------------------------*) | |
4907 | fun decName (_,f) = fileName f | |
4908 | (*--------------------------------------------------------------------*) | |
4909 | (* get the uri of an encoded entity. *) | |
4910 | (*--------------------------------------------------------------------*) | |
4911 | fun decUri (_,f) = fileUri f | |
4912 | (*--------------------------------------------------------------------*) | |
4913 | (* get the encoding of an encoded entity. *) | |
4914 | (*--------------------------------------------------------------------*) | |
4915 | fun decEncoding (enc,_) = enc | |
4916 | ||
4917 | (*--------------------------------------------------------------------*) | |
4918 | (* commit the auto-detected encoding. *) | |
4919 | (*--------------------------------------------------------------------*) | |
4920 | fun decCommit (enc,f) = | |
4921 | case enc | |
4922 | of UTF8 => () | |
4923 | | UTF16B => () | |
4924 | | UTF16L => () | |
4925 | | _ => raise DecError((enc,f),false,ERR_NO_ENC_DECL(encodingName enc)) | |
4926 | ||
4927 | (*--------------------------------------------------------------------*) | |
4928 | (* change to another - compatible - encoding. *) | |
4929 | (*--------------------------------------------------------------------*) | |
4930 | fun decSwitch ((enc,f),decl) = | |
4931 | let | |
4932 | val decEnc = isEncoding decl | |
4933 | val _ = if decEnc<>NOENC then () | |
4934 | else raise DecError((enc,f),false,ERR_UNSUPPORTED_ENC decl) | |
4935 | val newEnc = switchEncoding(enc,decEnc) | |
4936 | val _ = if decEnc<>NOENC orelse enc=NOENC then () | |
4937 | else raise DecError((enc,f),false,ERR_INCOMPATIBLE_ENC(encodingName enc,decl)) | |
4938 | in (newEnc,f) | |
4939 | end | |
4940 | ||
4941 | (*--------------------------------------------------------------------*) | |
4942 | (* get a character from an encoded entity. *) | |
4943 | (*--------------------------------------------------------------------*) | |
4944 | fun decGetChar (enc,f) = | |
4945 | let val (c,f1) = | |
4946 | case enc | |
4947 | of NOENC => raise EndOfFile f | |
4948 | | ASCII => getCharAscii f | |
4949 | | EBCDIC => getCharEbcdic f | |
4950 | | LATIN1 => getCharLatin1 f | |
4951 | | UCS2B => getCharUcs2b f | |
4952 | | UCS2L => getCharUcs2l f | |
4953 | | UCS4B => getCharUcs4b f | |
4954 | | UCS4L => getCharUcs4l f | |
4955 | | UCS4SB => getCharUcs4sb f | |
4956 | | UCS4SL => getCharUcs4sl f | |
4957 | | UTF8 => getCharUtf8 f | |
4958 | | UTF16B => getCharUtf16b f | |
4959 | | UTF16L => getCharUtf16l f | |
4960 | in (c,(enc,f1)) | |
4961 | end | |
4962 | handle EndOfFile f => raise DecEof(NOENC,f) | |
4963 | | DecodeError(f,eof,err) => raise DecError((enc,f),eof,err) | |
4964 | ||
4965 | (*--------------------------------------------------------------------*) | |
4966 | (* Load new characters, depending on the current entity's encoding. *) | |
4967 | (*--------------------------------------------------------------------*) | |
4968 | fun decGetArray (enc,f) arr = | |
4969 | let | |
4970 | (*--------------------------------------------------------------*) | |
4971 | (* Load the buffer with len new characters, or until the entity *) | |
4972 | (* end is reached. Close the current file in that case. *) | |
4973 | (* Local exception Ended is needed in order to preserve tail *) | |
4974 | (* recursion. *) | |
4975 | (*--------------------------------------------------------------*) | |
4976 | fun loadArray getChar = | |
4977 | let | |
4978 | val ende = Array.length arr | |
4979 | exception Error of int * exn | |
4980 | fun doit (idx,f) = | |
4981 | if idx=ende then (ende,(enc,f),NONE) | |
4982 | else let val (c,f1) = getChar f handle exn => raise Error (idx,exn) | |
4983 | val _ = Array.update(arr,idx,c) | |
4984 | in doit (idx+1,f1) | |
4985 | end | |
4986 | in doit (0,f) handle Error(idx,exn) | |
4987 | => case exn | |
4988 | of EndOfFile f => (idx,(NOENC,f),NONE) | |
4989 | | DecodeError (f,_,err) => (idx,(enc,f),SOME err) | |
4990 | | _ => raise exn | |
4991 | end | |
4992 | in case enc | |
4993 | of NOENC => (0,(NOENC,f),NONE) | |
4994 | | ASCII => loadArray getCharAscii | |
4995 | | EBCDIC => loadArray getCharEbcdic | |
4996 | | LATIN1 => loadArray getCharLatin1 | |
4997 | | UCS2B => loadArray getCharUcs2b | |
4998 | | UCS2L => loadArray getCharUcs2l | |
4999 | | UCS4B => loadArray getCharUcs4b | |
5000 | | UCS4L => loadArray getCharUcs4l | |
5001 | | UCS4SB => loadArray getCharUcs4sb | |
5002 | | UCS4SL => loadArray getCharUcs4sl | |
5003 | | UTF8 => loadArray getCharUtf8 | |
5004 | | UTF16B => loadArray getCharUtf16b | |
5005 | | UTF16L => loadArray getCharUtf16l | |
5006 | end | |
5007 | ||
5008 | ||
5009 | (*--------------------------------------------------------------------*) | |
5010 | (* open an XML file and try to auto-detect its encoding. *) | |
5011 | (*--------------------------------------------------------------------*) | |
5012 | (* Auto-detection of the encoding of XML entities according to App. F *) | |
5013 | (* of the XML recommendation. *) | |
5014 | (* *) | |
5015 | (* The file is opened in basic mode and upto four bytes are read from *) | |
5016 | (* it in order to detect the encoding: if they constitute a prefix of *) | |
5017 | (* "<?xml" in a recognized encoding, this encoding is taken. *) | |
5018 | (*--------------------------------------------------------------------*) | |
5019 | (* read upto four bytes from the file, detect the encoding, and unget *) | |
5020 | (* the read bytes. Return the resulting encoded file and its encoding *) | |
5021 | (*--------------------------------------------------------------------*) | |
5022 | (**************************************************************************) | |
5023 | (* NB 24.08.2000 Autodetection of encoding is affected by the *) | |
5024 | (* XML 1.0 Specification Errata (10.08.2000) E 44 *) | |
5025 | (* *) | |
5026 | (* The first four bytes read are interpreted according to: *) | |
5027 | (* *) | |
5028 | (* "Append the following to the second paragraph: *) | |
5029 | (* The notation ## is used to denote any byte value except 00. *) | |
5030 | (* Adjust the itemized list of detection cases to read as follows: *) | |
5031 | (* *) | |
5032 | (* With a Byte Order Mark: *) | |
5033 | (* 00 00 FE FF: UCS-4, big-endian machine (1234 order) *) | |
5034 | (* FF FE 00 00: UCS-4, little-endian machine (4321 order) *) | |
5035 | (* FE FF 00 ##: UTF-16, big-endian *) | |
5036 | (* FF FE ## 00: UTF-16, little-endian *) | |
5037 | (* EF BB BF: UTF-8 *) | |
5038 | (* Without a Byte Order Mark: *) | |
5039 | (* 00 00 00 3C: UCS-4, big-endian machine (1234 order) *) | |
5040 | (* 3C 00 00 00: UCS-4, little-endian machine (4321 order) *) | |
5041 | (* 00 00 3C 00: UCS-4, unusual octet order (2143) *) | |
5042 | (* 00 3C 00 00: UCS-4, unusual octet order (3412) *) | |
5043 | (* 00 3C ## ##, *) | |
5044 | (* 00 25 ## ##, *) | |
5045 | (* 00 20 ## ##, *) | |
5046 | (* 00 09 ## ##, *) | |
5047 | (* 00 0D ## ## or *) | |
5048 | (* 00 0A ## ##: Big-endian UTF-16 or ISO-10646-UCS-2. Note that, absent *) | |
5049 | (* an encoding declaration, these cases are strictly *) | |
5050 | (* speaking in error. *) | |
5051 | (* 3C 00 ## ##, *) | |
5052 | (* 25 00 ## ##, *) | |
5053 | (* 20 00 ## ##, *) | |
5054 | (* 09 00 ## ##, *) | |
5055 | (* 0D 00 ## ## or *) | |
5056 | (* 0A 00 ## ##: Little-endian UTF-16 or ISO-10646-UCS-2. Note that, absent*) | |
5057 | (* an encoding declaration, these cases are strictly *) | |
5058 | (* speaking in error. *) | |
5059 | (* 3C 3F 78 6D: UTF-8, ISO 646, ASCII, some part of ISO 8859, Shift-JIS, *) | |
5060 | (* EUC, or any other 7-bit, 8-bit, or mixed-width encoding *) | |
5061 | (* which ensures that the characters of ASCII have their *) | |
5062 | (* normal positions, width, and values; the actual encoding *) | |
5063 | (* declaration must be read to detect which of these *) | |
5064 | (* applies, but since all of these encodings use the same *) | |
5065 | (* bit patterns for the ASCII characters, the encoding *) | |
5066 | (* declaration itself may be read reliably *) | |
5067 | (* 4C 6F A7 94: EBCDIC (in some flavor; the full encoding declaration *) | |
5068 | (* must be read to tell which code page is in use) *) | |
5069 | (* other: UTF-8 without an encoding declaration, or else the data stream *) | |
5070 | (* is corrupt, fragmentary, or enclosed in a wrapper of some kind *) | |
5071 | (**************************************************************************) | |
5072 | ||
5073 | ||
5074 | ||
5075 | fun decOpenXml uri = | |
5076 | let | |
5077 | fun get4Bytes (n,f) = | |
5078 | if n=4 then (nil,f) | |
5079 | else let val (b,f1) = getByte f | |
5080 | val (bs,f2) = get4Bytes (n+1,f1) | |
5081 | in (b::bs,f2) | |
5082 | end | |
5083 | handle EndOfFile f => (nil,f) | |
5084 | ||
5085 | fun detect bs = | |
5086 | case bs | |
5087 | of | |
5088 | [0wx0,0wx0,0wxFE,0wxFF] => (UCS4B,nil) | |
5089 | | [0wxFF,0wxFE,0wx0,0wx0] => (UCS4L,nil) | |
5090 | | [0wxFE,0wxFF,0wx0,b4] => | |
5091 | if b4 <> 0wx0 then (UTF16B,[0wx0,b4]) | |
5092 | else (UTF8,bs) | |
5093 | | [0wxFF,0wxFE,b3,0wx0] => | |
5094 | if b3 <> 0wx0 then (UTF16L,[b3,0wx0]) | |
5095 | else (UTF8,bs) | |
5096 | | [0wxEF,0wxBB,0wxBF,b4] => (UTF8,[b4]) | |
5097 | | [0wx0,0wx0,0wx0,0wx3C] => (UCS4B,bs) | |
5098 | | [0wx3C,0wx0,0wx0,0wx0] => (UCS4L,bs) | |
5099 | | [0wx0,0wx0,0wx3C,0wx0] => (UCS4SB,bs) | |
5100 | | [0wx0,0wx3C,0wx0,0wx0] => (UCS4SL,bs) | |
5101 | | [0wx0,b2,b3,b4] => | |
5102 | if (b2=0wx3C orelse b2=0wx25 orelse b2=0wx20 | |
5103 | orelse b2=0wx09 orelse b2=0wx0D orelse b2=0wx0A) | |
5104 | andalso (b3<>0wx0 orelse b4<>0wx0) then (UTF16B,bs) | |
5105 | else (UTF8,bs) | |
5106 | | [b1,0wx0,b3,b4] => | |
5107 | if (b1=0wx3C orelse b1=0wx25 orelse b1=0wx20 | |
5108 | orelse b1=0wx09 orelse b1=0wx0D orelse b1=0wx0A) | |
5109 | andalso (b3<>0wx0 orelse b4<>0wx0) then (UTF16L,bs) | |
5110 | else (UTF8,bs) | |
5111 | | [0wx4C,0wx6F,0wxA7,0wx94] => (EBCDIC,bs) | |
5112 | | _ => (UTF8,bs) | |
5113 | ||
5114 | val f = openFile uri | |
5115 | val (bs,f1) = get4Bytes(0,f) | |
5116 | val (enc,unget) = detect bs | |
5117 | in (enc,ungetBytes(f1,unget)) | |
5118 | end | |
5119 | ||
5120 | (*--------------------------------------------------------------------*) | |
5121 | (* open a Unicode file. Check whether it starts with a byte order *) | |
5122 | (* mark. If yes, chose UTF16 encoding, otherwise use the default that *) | |
5123 | (* is provided as second argument. *) | |
5124 | (* *) | |
5125 | (* return the encoded file, a list of bytes looked ahead and the *) | |
5126 | (* encoding. *) | |
5127 | (*--------------------------------------------------------------------*) | |
5128 | fun decOpenUni (uri,default) = | |
5129 | let | |
5130 | fun def(f,bs) = | |
5131 | (default,ungetBytes(f,bs)) | |
5132 | fun detect f = | |
5133 | let val (b1,f1) = getByte f | |
5134 | in case b1 | |
5135 | of 0wxFE => (let val (b2,f2) = getByte f1 | |
5136 | in if b2 = 0wxFF then (UTF16B,f2) | |
5137 | else def(f2,[b1,b2]) | |
5138 | end handle EndOfFile f => def(f,[b1])) | |
5139 | | 0wxFF => (let val (b2,f2) = getByte f1 | |
5140 | in if b2 = 0wxFE then (UTF16L,f2) | |
5141 | else def(f2,[b1,b2]) | |
5142 | end handle EndOfFile f => def(f,[b1])) | |
5143 | | _ => def(f1,[b1]) | |
5144 | end handle EndOfFile f => def(f,nil) | |
5145 | val f = openFile uri | |
5146 | val (enc,f1) = detect f | |
5147 | in (enc,f1) | |
5148 | end | |
5149 | end | |
5150 | ||
5151 | (* stop of ../../Unicode/Decode/decode.sml *) | |
5152 | (* start of ../../Parser/Error/errorData.sml *) | |
5153 | structure ErrorData = | |
5154 | struct | |
5155 | (*--------------------------------------------------------------------*) | |
5156 | (* a position holds the filename, line and column number. *) | |
5157 | (*--------------------------------------------------------------------*) | |
5158 | type Position = string * int * int | |
5159 | val nullPosition = ("",0,0) | |
5160 | ||
5161 | datatype ExpItem = | |
5162 | EXP_CHAR of UniChar.Char | |
5163 | | EXP_DATA of UniChar.Data | |
5164 | | EXP_STRING of string | |
5165 | type Expected = ExpItem list | |
5166 | type Found = UniChar.Data | |
5167 | ||
5168 | datatype Location = | |
5169 | LOC_NONE | |
5170 | | LOC_AFTER_DTD | |
5171 | | LOC_ATT_DECL | |
5172 | | LOC_ATT_DEFAULT of Position | |
5173 | | LOC_ATT_VALUE | |
5174 | | LOC_CDATA | |
5175 | | LOC_CHOICE | |
5176 | | LOC_COMMENT | |
5177 | | LOC_CONTENT | |
5178 | | LOC_DECL | |
5179 | | LOC_DOC_DECL | |
5180 | | LOC_ELEM_DECL | |
5181 | | LOC_ENCODING | |
5182 | | LOC_ENT_DECL | |
5183 | | LOC_ENT_VALUE | |
5184 | | LOC_EPILOG | |
5185 | | LOC_ETAG | |
5186 | | LOC_IGNORED | |
5187 | | LOC_INCLUDED | |
5188 | | LOC_INT_DECL | |
5189 | | LOC_INT_SUBSET | |
5190 | | LOC_LITERAL | |
5191 | | LOC_MIXED | |
5192 | | LOC_NOT_DECL | |
5193 | | LOC_OUT_COND | |
5194 | | LOC_PROC | |
5195 | | LOC_PROLOG | |
5196 | | LOC_PUB_LIT | |
5197 | | LOC_SEQ | |
5198 | | LOC_STAG | |
5199 | | LOC_SUBSET | |
5200 | | LOC_SYS_LIT | |
5201 | | LOC_TEXT_DECL | |
5202 | | LOC_VERSION | |
5203 | | LOC_XML_DECL | |
5204 | ||
5205 | datatype EntityClass = | |
5206 | ENT_GENERAL | |
5207 | | ENT_PARAMETER | |
5208 | | ENT_EXTERNAL | |
5209 | | ENT_UNPARSED | |
5210 | ||
5211 | datatype Item = | |
5212 | IT_ATT_NAME | |
5213 | | IT_CDATA | |
5214 | | IT_CHAR of UniChar.Char | |
5215 | | IT_CHAR_REF | |
5216 | | IT_COND | |
5217 | | IT_DATA of UniChar.Data | |
5218 | | IT_DECL | |
5219 | | IT_DTD | |
5220 | | IT_ELEM | |
5221 | | IT_ENT_NAME | |
5222 | | IT_ETAG | |
5223 | | IT_GEN_ENT | |
5224 | | IT_ID_NAME | |
5225 | | IT_LANG_ID | |
5226 | | IT_NAME | |
5227 | | IT_NMTOKEN | |
5228 | | IT_NOT_NAME | |
5229 | | IT_NOTATION | |
5230 | | IT_PAR_ENT | |
5231 | | IT_PAR_REF | |
5232 | | IT_REF | |
5233 | | IT_STAG | |
5234 | | IT_TARGET | |
5235 | ||
5236 | datatype Error = | |
5237 | (* syntax errors *) | |
5238 | ERR_EMPTY of Location | |
5239 | | ERR_ENDED_BY_EE of Location | |
5240 | | ERR_EXPECTED of Expected * Found | |
5241 | | ERR_NON_XML_CHAR of UniChar.Char | |
5242 | | ERR_MISSING_WHITE | |
5243 | | ERR_NON_XML_CHARREF of UniChar.Char | |
5244 | ||
5245 | (* other well-formedness errors *) | |
5246 | | ERR_CANT_PARSE of Location | |
5247 | | ERR_ELEM_ENT_NESTING of UniChar.Data | |
5248 | | ERR_ELEM_TYPE_MATCH of UniChar.Data * UniChar.Data | |
5249 | | ERR_OMITTED_END_TAG of UniChar.Data | |
5250 | | ERR_IGNORED_END_TAG of UniChar.Data * UniChar.Data | |
5251 | | ERR_ENDED_IN_PROLOG | |
5252 | | ERR_FORBIDDEN_HERE of Item * Location | |
5253 | | ERR_ILLEGAL_ENTITY of EntityClass * UniChar.Data * Location | |
5254 | | ERR_MULTIPLE_DTD | |
5255 | | ERR_MULT_ATT_SPEC of UniChar.Data | |
5256 | | ERR_RECURSIVE_ENTITY of EntityClass * UniChar.Data | |
5257 | | ERR_UNDEC_ENTITY of EntityClass * UniChar.Data | |
5258 | ||
5259 | (* validity errors concerning attributes *) | |
5260 | | ERR_AT_LEAST_ONE of Item | |
5261 | | ERR_AT_MOST_ONE of Item | |
5262 | | ERR_ATT_IS_NOT of UniChar.Data * Item | |
5263 | | ERR_EXACTLY_ONE of Item | |
5264 | | ERR_FIXED_VALUE of UniChar.Data * UniChar.Vector * UniChar.Vector | |
5265 | | ERR_ID_DEFAULT | |
5266 | | ERR_MISSING_ATT of UniChar.Data | |
5267 | | ERR_MULT_ID_ELEM of UniChar.Data | |
5268 | | ERR_MUST_BE_AMONG of Item * UniChar.Data * UniChar.Data list | |
5269 | | ERR_MUST_BE_UNPARSED of UniChar.Data * Location | |
5270 | | ERR_REPEATED_ID of UniChar.Data | |
5271 | | ERR_UNDECL_ATT of UniChar.Data * UniChar.Data | |
5272 | | ERR_UNDECL_ID of UniChar.Data * Position list | |
5273 | ||
5274 | (* validity errors concerning elements *) | |
5275 | | ERR_BAD_ELEM of UniChar.Data * UniChar.Data | |
5276 | | ERR_ELEM_CONTENT of Item | |
5277 | | ERR_EMPTY_TAG of UniChar.Data | |
5278 | | ERR_ENDED_EARLY of UniChar.Data | |
5279 | | ERR_MULT_MIXED of UniChar.Data | |
5280 | | ERR_NONEMPTY of UniChar.Data | |
5281 | | ERR_REDEC_ELEM of UniChar.Data | |
5282 | | ERR_ROOT_ELEM of UniChar.Data * UniChar.Data | |
5283 | ||
5284 | (* other validity errors *) | |
5285 | | ERR_DECL_ENT_NESTING of Location | |
5286 | | ERR_EE_INT_SUBSET | |
5287 | | ERR_GROUP_ENT_NESTING of Location | |
5288 | | ERR_NO_DTD | |
5289 | | ERR_STANDALONE_DEF of UniChar.Data | |
5290 | | ERR_STANDALONE_ELEM of UniChar.Data | |
5291 | | ERR_STANDALONE_ENT of EntityClass *UniChar.Data | |
5292 | | ERR_STANDALONE_NORM of UniChar.Data | |
5293 | | ERR_UNDECLARED of Item * UniChar.Data * Location | |
5294 | ||
5295 | (* miscellaneous errors *) | |
5296 | | ERR_DECL_PREDEF of UniChar.Data * UniChar.Vector | |
5297 | | ERR_NO_SUCH_FILE of string * string | |
5298 | | ERR_RESERVED of UniChar.Data * Item | |
5299 | | ERR_VERSION of string | |
5300 | | ERR_XML_SPACE | |
5301 | ||
5302 | (* compatibility errors *) | |
5303 | | ERR_AMBIGUOUS of UniChar.Data * int * int | |
5304 | | ERR_MUST_ESCAPE of UniChar.Char | |
5305 | ||
5306 | (* interoperability errors *) | |
5307 | | ERR_EMPTY_TAG_INTER of UniChar.Data | |
5308 | | ERR_MUST_BE_EMPTY of UniChar.Data | |
5309 | ||
5310 | (* decoding errors *) | |
5311 | | ERR_DECODE_ERROR of Decode.Error.DecodeError | |
5312 | ||
5313 | datatype Warning = | |
5314 | WARN_NO_XML_DECL | |
5315 | ||
5316 | | WARN_MULT_DECL of Item * UniChar.Data | |
5317 | | WARN_SHOULD_DECLARE of UniChar.Data list | |
5318 | ||
5319 | | WARN_ATT_UNDEC_ELEM of UniChar.Data | |
5320 | | WARN_MULT_ATT_DECL of UniChar.Data | |
5321 | | WARN_MULT_ATT_DEF of UniChar.Data * UniChar.Data | |
5322 | | WARN_ENUM_ATTS of UniChar.Data * UniChar.Data list | |
5323 | ||
5324 | | WARN_DFA_TOO_LARGE of UniChar.Data * int | |
5325 | ||
5326 | | WARN_NON_ASCII_URI of UniChar.Char | |
5327 | end | |
5328 | (* stop of ../../Parser/Error/errorData.sml *) | |
5329 | (* start of ../../Parser/Error/errorString.sml *) | |
5330 | ||
5331 | ||
5332 | ||
5333 | ||
5334 | ||
5335 | ||
5336 | ||
5337 | ||
5338 | ||
5339 | ||
5340 | ||
5341 | ||
5342 | signature ErrorString = | |
5343 | sig | |
5344 | val errorChar2String : UniChar.Char -> string | |
5345 | val errorData2String : UniChar.Data -> string | |
5346 | val errorVector2String : UniChar.Vector -> string | |
5347 | ||
5348 | val quoteErrorChar0 : UniChar.Char -> string | |
5349 | val quoteErrorChar : UniChar.Char -> string | |
5350 | val quoteErrorData : UniChar.Data -> string | |
5351 | val quoteErrorString : string -> string | |
5352 | val quoteErrorVector : UniChar.Vector -> string | |
5353 | ||
5354 | val Position2String : ErrorData.Position -> string | |
5355 | ||
5356 | val Expected2String : ErrorData.Expected -> string | |
5357 | val Found2String : ErrorData.Found -> string | |
5358 | ||
5359 | val Item2String : ErrorData.Item -> string | |
5360 | val AnItem2String : ErrorData.Item -> string | |
5361 | ||
5362 | val Location2String : ErrorData.Location -> string | |
5363 | val InLocation2String : ErrorData.Location -> string | |
5364 | ||
5365 | val EntityClass2String : ErrorData.EntityClass -> string | |
5366 | end | |
5367 | ||
5368 | structure ErrorString : ErrorString = | |
5369 | struct | |
5370 | open | |
5371 | ErrorData UniChar UtilString | |
5372 | ||
5373 | ||
5374 | fun errorChar2String c = | |
5375 | case c | |
5376 | of 0wx9 => "\\t" | |
5377 | | 0wxA => "\\n" | |
5378 | | _ => if c>=0wx20 andalso c<0wx100 then String.implode [Char2char c] | |
5379 | else "U+"^UtilString.toUpperString | |
5380 | (StringCvt.padLeft #"0" 4 (Chars.toString c)) | |
5381 | ||
5382 | fun errorData2String cs = | |
5383 | String.concat (map errorChar2String cs) | |
5384 | fun errorVector2String vec = | |
5385 | errorData2String (Vector.foldr (op ::) nil vec) | |
5386 | ||
5387 | val QUOTE = "'" | |
5388 | fun quoteErrorChar0 c = QUOTE^errorChar2String c^QUOTE | |
5389 | fun quoteErrorChar c = if c=0wx0 then "entity end" else QUOTE^errorChar2String c^QUOTE | |
5390 | fun quoteErrorData cs = QUOTE^errorData2String cs^QUOTE | |
5391 | fun quoteErrorString s = QUOTE^s^QUOTE | |
5392 | fun quoteErrorVector v = QUOTE^errorVector2String v^QUOTE | |
5393 | ||
5394 | fun Position2String (fname,l,c) = | |
5395 | if fname="" then "" | |
5396 | else String.concat ["[",fname,":",Int2String l,".",Int2String c,"]"] | |
5397 | ||
5398 | fun ExpItem2String exp = | |
5399 | case exp | |
5400 | of EXP_CHAR c => quoteErrorChar c | |
5401 | | EXP_DATA cs => quoteErrorData cs | |
5402 | | EXP_STRING s => s | |
5403 | ||
5404 | fun Expected2String exp = | |
5405 | case exp | |
5406 | of nil => "nothing" | |
5407 | | [one] => ExpItem2String one | |
5408 | | _ => let val l=List.length exp | |
5409 | in List2xString ("",", ","") ExpItem2String (List.take (exp,l-1)) | |
5410 | ^" or "^ExpItem2String (List.last exp) | |
5411 | end | |
5412 | fun Found2String fnd = | |
5413 | case fnd | |
5414 | of [0wx0] => "entity end" | |
5415 | | cs => quoteErrorData cs | |
5416 | ||
5417 | fun Location2String loc = | |
5418 | case loc | |
5419 | of LOC_NONE => "nothing" | |
5420 | | LOC_AFTER_DTD => "document instance" | |
5421 | | LOC_ATT_DECL => "attribute list declaration" | |
5422 | | LOC_ATT_DEFAULT pos => "default value declared at "^Position2String pos | |
5423 | | LOC_ATT_VALUE => "attribute value" | |
5424 | | LOC_CDATA => "CDATA section" | |
5425 | | LOC_CHOICE => "choice list" | |
5426 | | LOC_COMMENT => "comment" | |
5427 | | LOC_CONTENT => "content" | |
5428 | | LOC_DECL => "declaration" | |
5429 | | LOC_DOC_DECL => "document type declaration" | |
5430 | | LOC_ELEM_DECL => "element type declaration" | |
5431 | | LOC_ENCODING => "encoding name" | |
5432 | | LOC_ENT_DECL => "entity declaration" | |
5433 | | LOC_ENT_VALUE => "entity value" | |
5434 | | LOC_EPILOG => "epilog" | |
5435 | | LOC_ETAG => "end-tag" | |
5436 | | LOC_IGNORED => "ignored section" | |
5437 | | LOC_INCLUDED => "included section" | |
5438 | | LOC_INT_DECL => "declaration in the internal subset" | |
5439 | | LOC_INT_SUBSET => "internal subset" | |
5440 | | LOC_LITERAL => "literal" | |
5441 | | LOC_MIXED => "Mixed list" | |
5442 | | LOC_NOT_DECL => "notation declaration" | |
5443 | | LOC_OUT_COND => "outside a conditional section" | |
5444 | | LOC_PROLOG => "prolog" | |
5445 | | LOC_PROC => "processing instruction" | |
5446 | | LOC_PUB_LIT => "public identifier" | |
5447 | | LOC_SEQ => "sequence list" | |
5448 | | LOC_STAG => "start-tag" | |
5449 | | LOC_SUBSET => "declaration subset" | |
5450 | | LOC_SYS_LIT => "system identifier" | |
5451 | | LOC_TEXT_DECL => "text declaration" | |
5452 | | LOC_VERSION => "version number" | |
5453 | | LOC_XML_DECL => "XML declaration" | |
5454 | fun InLocation2String loc = | |
5455 | case loc | |
5456 | of LOC_NONE => "" | |
5457 | | LOC_AFTER_DTD => "after the DTD" | |
5458 | | LOC_CONTENT => "in content" | |
5459 | | LOC_ATT_DEFAULT pos => "in default value declared at "^Position2String pos | |
5460 | | LOC_DOC_DECL => "in the document type declaration" | |
5461 | | LOC_EPILOG => "after the root element" | |
5462 | | LOC_INT_SUBSET => "in the internal subset" | |
5463 | | LOC_OUT_COND => "outside a conditional section" | |
5464 | | LOC_PROLOG => "in prolog" | |
5465 | | LOC_SUBSET => "in the declaration subset" | |
5466 | | LOC_XML_DECL => "in the XML declaration" | |
5467 | | _ => "in "^prependAnA (Location2String loc) | |
5468 | ||
5469 | fun EntityClass2String ent = | |
5470 | case ent | |
5471 | of ENT_GENERAL => "general" | |
5472 | | ENT_PARAMETER => "parameter" | |
5473 | | ENT_UNPARSED => "unparsed" | |
5474 | | ENT_EXTERNAL => "external" | |
5475 | ||
5476 | fun Item2String item = | |
5477 | case item | |
5478 | of IT_ATT_NAME => "attribute name" | |
5479 | | IT_CDATA => "CDATA section" | |
5480 | | IT_CHAR c => "character "^quoteErrorChar c | |
5481 | | IT_CHAR_REF => "character reference" | |
5482 | | IT_COND => "conditional section" | |
5483 | | IT_DATA cs => if null cs then "character data" else quoteErrorData cs | |
5484 | | IT_DECL => "declaration" | |
5485 | | IT_DTD => "document type declaration" | |
5486 | | IT_ELEM => "element type" | |
5487 | | IT_ENT_NAME => "entity name" | |
5488 | | IT_ETAG => "end-tag" | |
5489 | | IT_GEN_ENT => "general entity" | |
5490 | | IT_ID_NAME => "ID name" | |
5491 | | IT_LANG_ID => "language identifier" | |
5492 | | IT_NAME => "name" | |
5493 | | IT_NMTOKEN => "name token" | |
5494 | | IT_NOT_NAME => "notation name" | |
5495 | | IT_NOTATION => "notation" | |
5496 | | IT_PAR_ENT => "parameter entity" | |
5497 | | IT_PAR_REF => "parameter entity reference" | |
5498 | | IT_REF => "reference" | |
5499 | | IT_STAG => "start-tag" | |
5500 | | IT_TARGET => "target name" | |
5501 | ||
5502 | fun AnItem2String item = | |
5503 | case item | |
5504 | of IT_CHAR c => Item2String item | |
5505 | | IT_DATA cs => Item2String item | |
5506 | | _ => prependAnA (Item2String item) | |
5507 | end | |
5508 | ||
5509 | (* stop of ../../Parser/Error/errorString.sml *) | |
5510 | (* start of ../../Parser/Error/errorMessage.sml *) | |
5511 | ||
5512 | ||
5513 | ||
5514 | ||
5515 | ||
5516 | ||
5517 | ||
5518 | ||
5519 | signature ErrorMessage = | |
5520 | sig | |
5521 | val errorMessage : ErrorData.Error -> string list | |
5522 | val warningMessage : ErrorData.Warning -> string list | |
5523 | end | |
5524 | ||
5525 | structure ErrorMessage : ErrorMessage = | |
5526 | struct | |
5527 | open | |
5528 | Decode | |
5529 | UtilString | |
5530 | ErrorData ErrorString | |
5531 | ||
5532 | val quoteChar0 = quoteErrorChar0 | |
5533 | val quoteChar = quoteErrorChar | |
5534 | val quoteData = quoteErrorData | |
5535 | val quoteString = quoteErrorString | |
5536 | val quoteVector = quoteErrorVector | |
5537 | ||
5538 | fun errorMessage err = | |
5539 | case err | |
5540 | (* syntax errors *) | |
5541 | of ERR_EMPTY loc => ["Empty",Location2String loc] | |
5542 | | ERR_ENDED_BY_EE loc => [toUpperFirst (Location2String loc),"ended by entity end"] | |
5543 | | ERR_EXPECTED (exp,found) => | |
5544 | ["Expected",Expected2String exp,"but found",Found2String found] | |
5545 | | ERR_MISSING_WHITE => ["Missing white space"] | |
5546 | | ERR_NON_XML_CHAR c => ["Non-XML character",quoteChar0 c] | |
5547 | | ERR_NON_XML_CHARREF c => ["Reference to non-XML character",quoteChar0 c] | |
5548 | ||
5549 | (* other well-formedness errors *) | |
5550 | | ERR_CANT_PARSE loc => ["Cannot parse",Location2String loc] | |
5551 | | ERR_ELEM_ENT_NESTING elem => | |
5552 | ["The first and last character of element",quoteData elem, | |
5553 | "are in different entities"] | |
5554 | | ERR_ELEM_TYPE_MATCH (elem,other) => | |
5555 | ["Element",quoteData elem,"was ended by an end-tag for",quoteData other] | |
5556 | | ERR_IGNORED_END_TAG(elem,other) => | |
5557 | ["An end-tag for element type",quoteData other,"is not allowed in the", | |
5558 | "content of element",quoteData elem] | |
5559 | | ERR_OMITTED_END_TAG elem => | |
5560 | ["Element",quoteData elem,"has no end-tag"] | |
5561 | | ERR_ENDED_IN_PROLOG => ["Document entity ended in prolog"] | |
5562 | | ERR_FORBIDDEN_HERE(what,loc) => | |
5563 | [AnItem2String what,"is not allowed",InLocation2String loc] | |
5564 | | ERR_ILLEGAL_ENTITY(what,ent,loc) => | |
5565 | ["Reference to",EntityClass2String what,"entity",quoteData ent,InLocation2String loc] | |
5566 | | ERR_MULTIPLE_DTD => ["Repeated document type declaration"] | |
5567 | | ERR_MULT_ATT_SPEC att => | |
5568 | ["A value for attribute",quoteData att,"was already specified in this tag"] | |
5569 | | ERR_RECURSIVE_ENTITY(what,ent) => | |
5570 | ["Reference to",EntityClass2String what,"entity",quoteData ent, | |
5571 | "that is already open"] | |
5572 | | ERR_UNDEC_ENTITY(what,ent) => | |
5573 | ["Reference to undeclared",EntityClass2String what,"entity",quoteData ent] | |
5574 | ||
5575 | (* validity errors concerning attributes *) | |
5576 | | ERR_AT_LEAST_ONE what => ["At least one",Item2String what,"must be specified"] | |
5577 | | ERR_AT_MOST_ONE what => ["Only one",Item2String what,"may be specified"] | |
5578 | | ERR_ATT_IS_NOT(cs,what) => [quoteData cs,"is not",AnItem2String what] | |
5579 | | ERR_EXACTLY_ONE what => [toUpperFirst (AnItem2String what),"must be specified"] | |
5580 | | ERR_FIXED_VALUE(att,value,fixed) => | |
5581 | ["Attribute",quoteData att,"has the value",quoteVector value, | |
5582 | "but was declared with a fixed default value of",quoteVector fixed] | |
5583 | | ERR_ID_DEFAULT => | |
5584 | ["An ID attribute must have a default value of #IMPLIED or #REQUIRED"] | |
5585 | | ERR_MISSING_ATT att => | |
5586 | ["No value was specified for required attribute",quoteData att] | |
5587 | | ERR_MULT_ID_ELEM elem => | |
5588 | ["Element type",quoteData elem,"already has an ID attribute"] | |
5589 | | ERR_MUST_BE_AMONG (what,x,ys) => | |
5590 | [toUpperFirst (Item2String what),quoteData x,"is none of", | |
5591 | List2xString ("",",","") quoteData ys] | |
5592 | | ERR_MUST_BE_UNPARSED (name,loc) => | |
5593 | [quoteData name,InLocation2String loc,"is not the name of an unparsed entity"] | |
5594 | | ERR_REPEATED_ID name => | |
5595 | ["ID name",quoteData name,"already occurred as an attribute value"] | |
5596 | | ERR_UNDECL_ATT(att,elem) => | |
5597 | ["Attribute",quoteData att,"was not declared for element type",quoteData elem] | |
5598 | | ERR_UNDECL_ID(name,refs) => | |
5599 | (if null refs then ["Reference to non-existent ID",quoteData name] | |
5600 | else ["Reference to non-existent ID",quoteData name, | |
5601 | "(also referenced at",List2xString ("",", ",")") Position2String refs]) | |
5602 | ||
5603 | (* validity errors concerning elements *) | |
5604 | | ERR_BAD_ELEM (curr,elem) => | |
5605 | ["Element type",quoteData elem,"not allowed at this point", | |
5606 | "in the content of element",quoteData curr] | |
5607 | | ERR_ELEM_CONTENT what => | |
5608 | [toUpperFirst (AnItem2String what),"is not allowed in element content"] | |
5609 | | ERR_EMPTY_TAG elem => | |
5610 | ["Empty-element tag for element type",quoteData elem, | |
5611 | "whose content model requires non-empty content"] | |
5612 | | ERR_ENDED_EARLY elem => | |
5613 | ["Element",quoteData elem,"ended before its content was completed"] | |
5614 | | ERR_MULT_MIXED elem => | |
5615 | ["Element type",quoteData elem,"already occurred in this mixed-content declaration"] | |
5616 | | ERR_NONEMPTY elem => | |
5617 | ["The end-tag for element",quoteData elem,"with declared EMPTY content", | |
5618 | "must follow immediately after its start-tag"] | |
5619 | | ERR_REDEC_ELEM elem => ["Element type",quoteData elem,"was already declared"] | |
5620 | | ERR_ROOT_ELEM (dec,root) => | |
5621 | ["Document element",quoteData root,"does not match the name", | |
5622 | quoteData dec,"in the document type declaration"] | |
5623 | ||
5624 | (* other validity errors *) | |
5625 | | ERR_DECL_ENT_NESTING loc => | |
5626 | ["The first and last character of this",Location2String loc, | |
5627 | "are not in the same entity replacement text"] | |
5628 | | ERR_EE_INT_SUBSET => | |
5629 | ["An entity end is not allowed in a declaration in the internal subset"] | |
5630 | | ERR_GROUP_ENT_NESTING loc => | |
5631 | ["The opening and closing parentheses of this",Location2String loc, | |
5632 | "are not in the same entity replacement text"] | |
5633 | | ERR_NO_DTD => | |
5634 | ["There is no document type declaration. Switching to semi-validating mode", | |
5635 | "(will not check for declaredness of entities, elements, etc.)"] | |
5636 | | ERR_STANDALONE_DEF att => | |
5637 | ["Externally declared attribute",quoteData att,"was defaulted,", | |
5638 | "although the standalone declaration is",quoteString "yes"] | |
5639 | | ERR_STANDALONE_ELEM elem => | |
5640 | ["White space occurred in the content of externally declared", | |
5641 | "element",quoteData elem,"with declared element content", | |
5642 | "although the standalone declaration is",quoteString "yes"] | |
5643 | | ERR_STANDALONE_ENT(what,ent) => | |
5644 | ["Reference to externally declared",EntityClass2String what,"entity", | |
5645 | quoteData ent^",","although the standalone declaration is",quoteString "yes"] | |
5646 | | ERR_STANDALONE_NORM att => | |
5647 | ["The value for externally declared attribute", | |
5648 | quoteData att,"was changed as a result of normalization,", | |
5649 | "although the standalone declaration is",quoteString "yes"] | |
5650 | | ERR_UNDECLARED (what,x,loc) => | |
5651 | ["Undeclared",Item2String what,quoteData x,InLocation2String loc] | |
5652 | ||
5653 | (* miscellaneous errors *) | |
5654 | | ERR_DECL_PREDEF(ent,def) => | |
5655 | ["General entity",quoteData ent,"must be declared as internal entity", | |
5656 | "with replacement text",quoteVector def] | |
5657 | | ERR_NO_SUCH_FILE(f,msg) => ["Could not open file",quoteString f,"("^msg^")"] | |
5658 | | ERR_RESERVED(name,what) => | |
5659 | [quoteData name,"is reserved for standardization and therefore not allowed as", | |
5660 | AnItem2String what] | |
5661 | | ERR_VERSION version => | |
5662 | ["XML version",quoteString version,"is not supported"] | |
5663 | | ERR_XML_SPACE => | |
5664 | ["Attribute",quoteString "xml:space","must be given an enumeration type", | |
5665 | "with values",quoteString "default","and",quoteString "preserve","only"] | |
5666 | ||
5667 | (* compatibility errors *) | |
5668 | | ERR_AMBIGUOUS(a,n1,n2) => | |
5669 | ["Content model is ambiguous: conflict between the",numberNth n1, | |
5670 | "and the",numberNth n2,"occurrence of element",quoteData a^".", | |
5671 | "Using an approximation instead"] | |
5672 | | ERR_MUST_ESCAPE c => ["Character",quoteChar c,"must be escaped for compatibility"] | |
5673 | ||
5674 | (* interoperability errors *) | |
5675 | | ERR_EMPTY_TAG_INTER elem => | |
5676 | ["Empty-element tag for element",quoteData elem,"with non-EMPTY declared content"] | |
5677 | | ERR_MUST_BE_EMPTY elem => | |
5678 | ["An empty-element tag must be used for element type", | |
5679 | quoteData elem,"with EMPTY declared content"] | |
5680 | ||
5681 | (* decoding errors *) | |
5682 | | ERR_DECODE_ERROR err => "Decoding error:"::Decode.Error.decodeMessage err | |
5683 | ||
5684 | fun warningMessage warn = | |
5685 | case warn | |
5686 | of WARN_NO_XML_DECL => ["Document entity has no XML declaration"] | |
5687 | ||
5688 | | WARN_MULT_DECL(what,name) => | |
5689 | ["Repeated declaration for",Item2String what,quoteData name] | |
5690 | | WARN_SHOULD_DECLARE(ents) => | |
5691 | let val (one,more) = (hd ents,tl ents) | |
5692 | in case more | |
5693 | of nil => ["The predefined entity",quoteData one,"should have been declared"] | |
5694 | | _ => ["The predefined entities",List2xString ("",", ","") quoteData more, | |
5695 | "and",quoteData one,"should have been declared"] | |
5696 | end | |
5697 | ||
5698 | | WARN_ATT_UNDEC_ELEM elem => | |
5699 | ["Attribute-list declaration for undeclared element type",quoteData elem] | |
5700 | | WARN_MULT_ATT_DECL elem => | |
5701 | ["Repeated attribute-list declaration for element type",quoteData elem] | |
5702 | | WARN_MULT_ATT_DEF(elem,att) => | |
5703 | ["Repeated definition of attribute",quoteData att,"for element type",quoteData elem] | |
5704 | | WARN_ENUM_ATTS(elem,names) => | |
5705 | ["The following name tokens occur more than once in the enumerated attribute", | |
5706 | "types of element",quoteData elem^":",List2xString ("",", ","") quoteData names] | |
5707 | ||
5708 | | WARN_DFA_TOO_LARGE (elem,max) => | |
5709 | ["The finite state machine for the content model of element type", | |
5710 | quoteData elem,"would have more than the maximal allowed number of", | |
5711 | Int2String max,"states. Using an approximation instead"] | |
5712 | ||
5713 | | WARN_NON_ASCII_URI c => | |
5714 | ["System identifier contains non-ASCII character",quoteChar c] | |
5715 | ||
5716 | end | |
5717 | (* stop of ../../Parser/Error/errorMessage.sml *) | |
5718 | (* start of ../../Parser/Error/errorUtil.sml *) | |
5719 | ||
5720 | ||
5721 | signature ErrorUtil = | |
5722 | sig | |
5723 | val isFatalError : ErrorData.Error -> bool | |
5724 | val isDecodeError : ErrorData.Error -> bool | |
5725 | val isSyntaxError : ErrorData.Error -> bool | |
5726 | val isValidityError : ErrorData.Error -> bool | |
5727 | val isWellFormedError : ErrorData.Error -> bool | |
5728 | end | |
5729 | ||
5730 | structure ErrorUtil : ErrorUtil = | |
5731 | struct | |
5732 | open ErrorData | |
5733 | ||
5734 | fun isDecodeError err = | |
5735 | case err | |
5736 | of ERR_DECODE_ERROR _ => true | |
5737 | | _ => false | |
5738 | ||
5739 | fun isSyntaxError err = | |
5740 | case err | |
5741 | of ERR_EMPTY _ => true | |
5742 | | ERR_ENDED_BY_EE _ => true | |
5743 | | ERR_EXPECTED _ => true | |
5744 | | ERR_MISSING_WHITE => true | |
5745 | | ERR_NON_XML_CHAR _ => true | |
5746 | | ERR_NON_XML_CHARREF _ => true | |
5747 | | _ => false | |
5748 | ||
5749 | fun isWellFormedError err = | |
5750 | case err | |
5751 | of ERR_CANT_PARSE _ => true | |
5752 | | ERR_ELEM_ENT_NESTING _ => true | |
5753 | | ERR_ELEM_TYPE_MATCH _ => true | |
5754 | | ERR_OMITTED_END_TAG _ => true | |
5755 | | ERR_IGNORED_END_TAG _ => true | |
5756 | | ERR_ENDED_IN_PROLOG => true | |
5757 | | ERR_FORBIDDEN_HERE _ => true | |
5758 | | ERR_ILLEGAL_ENTITY _ => true | |
5759 | | ERR_MULTIPLE_DTD => true | |
5760 | | ERR_MULT_ATT_SPEC _ => true | |
5761 | | ERR_RECURSIVE_ENTITY _ => true | |
5762 | | ERR_UNDEC_ENTITY _ => true | |
5763 | | _ => isSyntaxError err | |
5764 | ||
5765 | fun isFatalError err = | |
5766 | case err | |
5767 | of ERR_NO_SUCH_FILE _ => true | |
5768 | | _ => isWellFormedError err | |
5769 | ||
5770 | fun isValidityError err = | |
5771 | case err | |
5772 | of ERR_AT_LEAST_ONE _ => true | |
5773 | | ERR_AT_MOST_ONE _ => true | |
5774 | | ERR_ATT_IS_NOT _ => true | |
5775 | | ERR_EXACTLY_ONE _ => true | |
5776 | | ERR_FIXED_VALUE _ => true | |
5777 | | ERR_ID_DEFAULT => true | |
5778 | | ERR_MISSING_ATT _ => true | |
5779 | | ERR_MULT_ID_ELEM _ => true | |
5780 | | ERR_MUST_BE_AMONG _ => true | |
5781 | | ERR_MUST_BE_UNPARSED _ => true | |
5782 | | ERR_REPEATED_ID _ => true | |
5783 | | ERR_UNDECL_ATT _ => true | |
5784 | | ERR_UNDECL_ID _ => true | |
5785 | | ERR_BAD_ELEM _ => true | |
5786 | | ERR_ELEM_CONTENT _ => true | |
5787 | | ERR_EMPTY_TAG _ => true | |
5788 | | ERR_ENDED_EARLY _ => true | |
5789 | | ERR_MULT_MIXED _ => true | |
5790 | | ERR_NONEMPTY _ => true | |
5791 | | ERR_REDEC_ELEM _ => true | |
5792 | | ERR_ROOT_ELEM _ => true | |
5793 | | ERR_DECL_ENT_NESTING _ => true | |
5794 | | ERR_EE_INT_SUBSET => true | |
5795 | | ERR_GROUP_ENT_NESTING _ => true | |
5796 | | ERR_NO_DTD => true | |
5797 | | ERR_STANDALONE_DEF _ => true | |
5798 | | ERR_STANDALONE_ELEM _ => true | |
5799 | | ERR_STANDALONE_ENT _ => true | |
5800 | | ERR_STANDALONE_NORM _ => true | |
5801 | | ERR_UNDECLARED _ => true | |
5802 | | _ => false | |
5803 | end | |
5804 | (* stop of ../../Parser/Error/errorUtil.sml *) | |
5805 | (* start of ../../Parser/Error/expected.sml *) | |
5806 | ||
5807 | ||
5808 | ||
5809 | ||
5810 | structure Expected = | |
5811 | struct | |
5812 | local | |
5813 | open UniChar ErrorData | |
5814 | in | |
5815 | val expAnElemName = [EXP_STRING "an element name"] | |
5816 | val expAnEntName = [EXP_STRING "an entity name"] | |
5817 | val expAName = [EXP_STRING "a name"] | |
5818 | val expANameToken = [EXP_STRING "a name token"] | |
5819 | val expANotName = [EXP_STRING "a notation name"] | |
5820 | val expATarget = [EXP_STRING "a target name"] | |
5821 | val expAttDefKey = [EXP_DATA (String2Data "REQUIRED"),EXP_DATA (String2Data "IMPLIED"), | |
5822 | EXP_DATA (String2Data "FIXED")] | |
5823 | val expAttNameGt = [EXP_STRING "an attribute name",EXP_CHAR 0wx3E] | |
5824 | val expAttSTagEnd = [EXP_STRING "an attribute name",EXP_CHAR 0wx3E, | |
5825 | EXP_DATA(String2Data "/>")] | |
5826 | val expAttType = [EXP_CHAR 0wx28,EXP_DATA (String2Data "CDATA"), | |
5827 | EXP_DATA (String2Data "ID"),EXP_DATA (String2Data "IDREF"), | |
5828 | EXP_DATA (String2Data "IDREFS"),EXP_DATA (String2Data "ENTITY"), | |
5829 | EXP_DATA (String2Data "ENTITIES"),EXP_DATA (String2Data "NMTOKEN"), | |
5830 | EXP_DATA (String2Data "NMTOKENS"),EXP_DATA (String2Data "NOTATION")] | |
5831 | val expBarRpar = [EXP_CHAR 0wx29,EXP_CHAR 0wx7C] | |
5832 | val expCdata = [EXP_DATA (String2Data "CDATA")] | |
5833 | fun expConCRpar c = [EXP_CHAR 0wx29,EXP_CHAR c] | |
5834 | val expConRpar = [EXP_CHAR 0wx29,EXP_CHAR 0wx2C,EXP_CHAR 0wx7C] | |
5835 | val expCondStatus = [EXP_DATA (String2Data "IGNORE"),EXP_DATA (String2Data "INCLUDE")] | |
5836 | val expContSpec = [EXP_CHAR 0wx28,EXP_DATA (String2Data "ANY"), | |
5837 | EXP_DATA (String2Data "EMPTY")] | |
5838 | val expElemLpar = [EXP_STRING "an element name",EXP_CHAR 0wx28] | |
5839 | val expEncStand = [EXP_DATA (String2Data "encoding"), | |
5840 | EXP_DATA (String2Data "standalone")] | |
5841 | val expDash = [EXP_CHAR 0wx2D] | |
5842 | val expDashDocLbrk = [EXP_CHAR 0wx2D,EXP_CHAR 0wx5B,EXP_DATA (String2Data "DOCTYPE")] | |
5843 | val expDashLbrack = [EXP_CHAR 0wx2D,EXP_CHAR 0wx5B] | |
5844 | val expDigitX = [EXP_STRING "a digit",EXP_CHAR 0wx78] | |
5845 | val expEncoding = [EXP_DATA (String2Data "encoding")] | |
5846 | val expEncVers = [EXP_DATA (String2Data "encoding"),EXP_DATA (String2Data "version")] | |
5847 | val expEntNamePero = [EXP_STRING "an entity name",EXP_CHAR 0wx25] | |
5848 | val expEq = [EXP_CHAR 0wx3D] | |
5849 | val expExclQuest = [EXP_CHAR 0wx21,EXP_CHAR 0wx3F] | |
5850 | val expExtId = [EXP_DATA (String2Data "PUBLIC"),EXP_DATA (String2Data "SYSTEM")] | |
5851 | val expGt = [EXP_CHAR 0wx3E] | |
5852 | val expGtNdata = [EXP_CHAR 0wx3E,EXP_DATA (String2Data "NDATA")] | |
5853 | val expHexDigit = [EXP_STRING "a hexadecimal digit"] | |
5854 | val expInSubset = [EXP_CHAR 0wx3C,EXP_CHAR 0wx5D,EXP_CHAR 0wx25, | |
5855 | EXP_STRING "white space"] | |
5856 | val expLbrack = [EXP_CHAR 0wx5B] | |
5857 | val expLitQuote = [EXP_CHAR 0wx22,EXP_CHAR 0wx27] | |
5858 | val expLitQuotExt = [EXP_CHAR 0wx22,EXP_CHAR 0wx27, | |
5859 | EXP_DATA (String2Data "PUBLIC"),EXP_DATA (String2Data "SYSTEM")] | |
5860 | val expLpar = [EXP_CHAR 0wx28] | |
5861 | val expNoYes = [EXP_DATA (String2Data "no"),EXP_DATA (String2Data "yes")] | |
5862 | val expPcdata = [EXP_DATA (String2Data "PCDATA")] | |
5863 | val expProcEnd = [EXP_DATA (String2Data "?>")] | |
5864 | val expQuoteRni = [EXP_CHAR 0wx22,EXP_CHAR 0wx27,EXP_CHAR 0wx23] | |
5865 | val expRbrack = [EXP_CHAR 0wx5D] | |
5866 | val expRep = [EXP_CHAR 0wx2A] | |
5867 | val expSemi = [EXP_CHAR 0wx3B] | |
5868 | val expStandOpt = [EXP_DATA (String2Data "standalone"),EXP_DATA (String2Data "?>")] | |
5869 | val expStartEnc = [EXP_STRING "a letter"] | |
5870 | val expStartMarkup = [EXP_DATA (String2Data "--"),EXP_DATA (String2Data "ATTLIST"), | |
5871 | EXP_DATA (String2Data "ELEMENT"),EXP_DATA (String2Data "ENTITY"), | |
5872 | EXP_DATA (String2Data "NOTATION")] | |
5873 | val expVersion = [EXP_DATA (String2Data "version")] | |
5874 | end | |
5875 | end | |
5876 | (* stop of ../../Parser/Error/expected.sml *) | |
5877 | (* start of ../../Parser/Error/errors.sml *) | |
5878 | structure Errors = | |
5879 | struct | |
5880 | open | |
5881 | UtilError | |
5882 | ErrorData ErrorMessage ErrorString ErrorUtil Expected | |
5883 | end | |
5884 | (* stop of ../../Parser/Error/errors.sml *) | |
5885 | (* start of ../../Parser/Base/baseData.sml *) | |
5886 | (*--------------------------------------------------------------------------*) | |
5887 | (* Structure: BaseData *) | |
5888 | (*--------------------------------------------------------------------------*) | |
5889 | ||
5890 | structure BaseData = | |
5891 | struct | |
5892 | open DfaData | |
5893 | ||
5894 | (*--- external ids may have a public id and must have a system id ---*) | |
5895 | (*--- for notations, however, also the system id can be optional ----*) | |
5896 | datatype ExternalId = | |
5897 | EXTID of (string * UniChar.Char) option * (Uri.Uri * Uri.Uri * UniChar.Char) option | |
5898 | ||
5899 | (*--- external ids may have a public id and must have a system id ---*) | |
5900 | type NotationInfo = ExternalId option | |
5901 | ||
5902 | (*--- replacement of a general entity ---*) | |
5903 | datatype GenEntity = | |
5904 | GE_NULL | |
5905 | | GE_INTERN of UniChar.Vector * UniChar.Vector | |
5906 | | GE_EXTERN of ExternalId | |
5907 | | GE_UNPARSED of ExternalId * int * Errors.Position | |
5908 | type GenEntInfo = GenEntity * bool | |
5909 | ||
5910 | fun isExtGen (GE_EXTERN _) = true | |
5911 | | isExtGen _ = false | |
5912 | ||
5913 | (*--- replacement of a parameter entity ---*) | |
5914 | datatype ParEntity = | |
5915 | PE_NULL | |
5916 | | PE_INTERN of UniChar.Vector * UniChar.Vector | |
5917 | | PE_EXTERN of ExternalId | |
5918 | type ParEntInfo = ParEntity * bool | |
5919 | ||
5920 | fun isExtPar (PE_EXTERN _) = true | |
5921 | | isExtPar _ = false | |
5922 | ||
5923 | (*--- declared type of an attribute ---*) | |
5924 | datatype AttType = | |
5925 | AT_CDATA | |
5926 | | AT_NMTOKEN | |
5927 | | AT_NMTOKENS | |
5928 | | AT_ID | |
5929 | | AT_IDREF | |
5930 | | AT_IDREFS | |
5931 | | AT_ENTITY | |
5932 | | AT_ENTITIES | |
5933 | | AT_GROUP of int list | |
5934 | | AT_NOTATION of int list | |
5935 | ||
5936 | (*--- typed attribute value ---*) | |
5937 | datatype AttValue = | |
5938 | AV_CDATA of UniChar.Vector | |
5939 | | AV_NMTOKEN of UniChar.Data | |
5940 | | AV_NMTOKENS of UniChar.Data list | |
5941 | | AV_ID of int | |
5942 | | AV_IDREF of int | |
5943 | | AV_IDREFS of int list | |
5944 | | AV_ENTITY of int | |
5945 | | AV_ENTITIES of int list | |
5946 | | AV_GROUP of int list * int | |
5947 | | AV_NOTATION of int list * int | |
5948 | ||
5949 | fun isIdType at = at=AT_ID | |
5950 | ||
5951 | (*--- default values of attributes ---*) | |
5952 | datatype AttDefault = | |
5953 | AD_IMPLIED | |
5954 | | AD_REQUIRED | |
5955 | | AD_DEFAULT of (UniChar.Vector * UniChar.Vector * AttValue option) | |
5956 | * (Errors.Position * bool ref) | |
5957 | | AD_FIXED of (UniChar.Vector * UniChar.Vector * AttValue option) | |
5958 | * (Errors.Position * bool ref) | |
5959 | ||
5960 | (*--- attribute definition (list) ---*) | |
5961 | (*--- the boolean says whether it was externally declared ---*) | |
5962 | type AttDef = int * AttType * AttDefault * bool | |
5963 | type AttDefList = AttDef list | |
5964 | ||
5965 | (*--- content specification ---*) | |
5966 | fun defaultAttDef idx = (idx,AT_CDATA,AD_IMPLIED,false) | |
5967 | ||
5968 | (*--- content specification ---*) | |
5969 | datatype ContentSpec = | |
5970 | CT_ANY | |
5971 | | CT_EMPTY | |
5972 | | CT_MIXED of int list | |
5973 | | CT_ELEMENT of DfaData.ContentModel * DfaData.Dfa | |
5974 | ||
5975 | fun isMixed ct = | |
5976 | case ct | |
5977 | of CT_ANY => true | |
5978 | | CT_MIXED _ => true | |
5979 | | _ => false | |
5980 | ||
5981 | type ElemInfo = {decl : (ContentSpec * bool) option, | |
5982 | atts : (AttDefList * bool) option, | |
5983 | errAtts : int list} | |
5984 | ||
5985 | val nullElemInfo : ElemInfo = {decl=NONE, | |
5986 | atts=NONE, | |
5987 | errAtts=nil} | |
5988 | ||
5989 | (*--------------------------------------------------------------------*) | |
5990 | (* the id info tells whether an id value has occurred for a name and *) | |
5991 | (* the list of all positions where it occurred as an idref value. *) | |
5992 | (*--------------------------------------------------------------------*) | |
5993 | type IdInfo = bool * Errors.Position list | |
5994 | val nullIdInfo : IdInfo = (false,nil) | |
5995 | end | |
5996 | (* stop of ../../Parser/Base/baseData.sml *) | |
5997 | (* start of ../../Parser/Dfa/dfaString.sml *) | |
5998 | ||
5999 | ||
6000 | ||
6001 | ||
6002 | ||
6003 | (*--------------------------------------------------------------------------*) | |
6004 | (* Structure: DfaString *) | |
6005 | (* *) | |
6006 | (* Notes: *) | |
6007 | (* This structure is needed for debugging of content models and tables. *) | |
6008 | (* *) | |
6009 | (* Depends on: *) | |
6010 | (* DfaData *) | |
6011 | (* UtilString *) | |
6012 | (* *) | |
6013 | (* Exceptions raised by functions in this structure: *) | |
6014 | (* Table2String : none *) | |
6015 | (* ContentModel2String : none *) | |
6016 | (*--------------------------------------------------------------------------*) | |
6017 | signature DfaString = | |
6018 | sig | |
6019 | val ContentModel2String : (int -> string) -> DfaData.ContentModel -> string | |
6020 | val Dfa2String : (int -> string) -> DfaData.Dfa -> string | |
6021 | end | |
6022 | ||
6023 | structure DfaString : DfaString = | |
6024 | struct | |
6025 | open DfaBase UtilString | |
6026 | ||
6027 | fun State2String q = if q=dfaError then "Error" else Int2String q | |
6028 | ||
6029 | fun Info2String Elem2String (q,mt,fst) = String.concat | |
6030 | (State2String q::Bool2xString ("[empty]","") mt | |
6031 | ::map (fn (q,a) => " "^Elem2String a^"->"^State2String q) fst) | |
6032 | ||
6033 | fun ContentModel2String Elem2String cm = | |
6034 | case cm | |
6035 | of CM_ELEM i => Elem2String i | |
6036 | | CM_OPT cm => ContentModel2String Elem2String cm^"?" | |
6037 | | CM_REP cm => ContentModel2String Elem2String cm^"*" | |
6038 | | CM_PLUS cm => ContentModel2String Elem2String cm^"+" | |
6039 | | CM_ALT cms => List2xString ("(","|",")") (ContentModel2String Elem2String) cms | |
6040 | | CM_SEQ cms => List2xString ("(",",",")") (ContentModel2String Elem2String) cms | |
6041 | ||
6042 | fun CM2String Elem2String = | |
6043 | let fun cm2s indent cm = | |
6044 | case cm | |
6045 | of (ELEM a,info) => String.concat | |
6046 | [indent,Elem2String a," ",Info2String Elem2String info,"\n"] | |
6047 | | (OPT cm',info) => String.concat | |
6048 | [indent,"? ",Info2String Elem2String info,"\n",cm2s (indent^" ") cm'] | |
6049 | | (REP cm',info) => String.concat | |
6050 | [indent,"* ",Info2String Elem2String info,"\n",cm2s (indent^" ") cm'] | |
6051 | | (PLUS cm',info) => String.concat | |
6052 | [indent,"+ ",Info2String Elem2String info,"\n",cm2s (indent^" ") cm'] | |
6053 | | (ALT cms,info) => String.concat | |
6054 | (indent^"| "::Info2String Elem2String info::"\n" | |
6055 | ::map (cm2s (indent^" ")) cms) | |
6056 | | (SEQ cms,info) => String.concat | |
6057 | (indent^", "::Info2String Elem2String info::"\n" | |
6058 | ::map (cm2s (indent^" ")) cms) | |
6059 | in cm2s "" | |
6060 | end | |
6061 | ||
6062 | fun Row2String Elem2String (lo,hi,tab,fin) = | |
6063 | String.concat | |
6064 | (Vector.foldri | |
6065 | (fn (i,q,yet) => if q<0 then yet | |
6066 | else " "::Elem2String (i+lo)::"->"::State2String q::yet) | |
6067 | (if fin then [" [Final]"] else nil) | |
6068 | (tab,0,NONE)) | |
6069 | ||
6070 | fun Dfa2String Elem2String tab = | |
6071 | String.concat | |
6072 | (Vector.foldri | |
6073 | (fn (q,row,yet) => State2String q::":"::Row2String Elem2String row::yet) | |
6074 | nil (tab,0,NONE)) | |
6075 | end | |
6076 | (* stop of ../../Parser/Dfa/dfaString.sml *) | |
6077 | (* start of ../../Parser/Base/baseString.sml *) | |
6078 | ||
6079 | ||
6080 | ||
6081 | ||
6082 | ||
6083 | ||
6084 | ||
6085 | ||
6086 | ||
6087 | ||
6088 | ||
6089 | ||
6090 | (*--------------------------------------------------------------------------*) | |
6091 | (* Structure: BaseString *) | |
6092 | (* *) | |
6093 | (* Depends on: *) | |
6094 | (* UniChar *) | |
6095 | (* Dfa *) | |
6096 | (* BaseData *) | |
6097 | (* UtilString *) | |
6098 | (* *) | |
6099 | (* Exceptions raised by functions in this structure: *) | |
6100 | (* ElemInfo2xString : InternalError *) | |
6101 | (* ExternalId2String : none *) | |
6102 | (* GenEntity2xString : none *) | |
6103 | (* Notation2String : none *) | |
6104 | (* IdInfo2String : none *) | |
6105 | (* ParEntity2String : none *) | |
6106 | (*--------------------------------------------------------------------------*) | |
6107 | signature BaseString = | |
6108 | sig | |
6109 | val ExternalId2String : BaseData.ExternalId -> string | |
6110 | val NotationInfo2String : BaseData.NotationInfo -> string | |
6111 | ||
6112 | val GenEntity2xString : (int -> string) -> BaseData.GenEntity -> string | |
6113 | val ParEntity2String : BaseData.ParEntity -> string | |
6114 | ||
6115 | val ElemInfo2xString : (int -> string) * (int -> string) * (int -> string) | |
6116 | * (int -> string) * (int -> string) -> BaseData.ElemInfo -> string | |
6117 | ||
6118 | val IdInfo2String : BaseData.IdInfo -> string | |
6119 | end | |
6120 | ||
6121 | structure BaseString : BaseString = | |
6122 | struct | |
6123 | open | |
6124 | UtilString Uri | |
6125 | Errors UniChar DfaString | |
6126 | BaseData | |
6127 | ||
6128 | val THIS_MODULE = "BaseString" | |
6129 | ||
6130 | fun ExternalId2String (EXTID id) = | |
6131 | case id | |
6132 | of (SOME(p,pq),SOME(rel,s,sq)) => String.concat | |
6133 | ["PUBLIC ",quoteUni pq p, | |
6134 | " ",quoteUni sq (Uri2String rel), | |
6135 | " @ ",quoteUni sq (Uri2String s)] | |
6136 | | (SOME(p,pq),NONE) => String.concat | |
6137 | ["PUBLIC ",quoteUni pq p] | |
6138 | | (NONE,SOME(rel,s,sq)) => String.concat | |
6139 | ["SYSTEM ",quoteUni sq (Uri2String rel), | |
6140 | " @ ",quoteUni sq (Uri2String s)] | |
6141 | | (NONE,NONE) => "<none>" | |
6142 | fun NotationInfo2String not = | |
6143 | case not | |
6144 | of NONE => "undeclared" | |
6145 | | SOME extId => ExternalId2String extId | |
6146 | ||
6147 | fun GenEntity2xString NotIdx2String ge = | |
6148 | case ge | |
6149 | of GE_NULL => "NULL" | |
6150 | | GE_INTERN(lit,cv) => let val quote = Vector.sub(lit,0) | |
6151 | in String.concat ["INTERN ",Vector2String lit, | |
6152 | " - ",quoteVector quote cv] | |
6153 | end | |
6154 | | GE_EXTERN id => "EXTERN "^ExternalId2String id | |
6155 | | GE_UNPARSED(id,not,_) => "UNPARSED "^ExternalId2String id^" "^NotIdx2String not | |
6156 | ||
6157 | fun ParEntity2String pe = | |
6158 | case pe | |
6159 | of PE_NULL => "NULL" | |
6160 | | PE_INTERN(lit,cv) => let val quote = Vector.sub(lit,0) | |
6161 | in String.concat ["INTERN ",Vector2String lit, | |
6162 | " - ",quoteVector quote cv] | |
6163 | end | |
6164 | | PE_EXTERN id => "EXTERN "^ExternalId2String id | |
6165 | ||
6166 | fun ContentSpec2String Elem2String cs = | |
6167 | case cs | |
6168 | of CT_ANY => "ANY" | |
6169 | | CT_EMPTY => "EMPTY" | |
6170 | | CT_MIXED is => List2xString ("MIXED (","|",")") Elem2String is | |
6171 | | CT_ELEMENT(cm,_) => "ELEMENT "^ContentModel2String Elem2String cm | |
6172 | ||
6173 | fun AttValue2xString (Att2String,Ent2String,Id2String,Not2String) quote av = | |
6174 | quoteUni quote (case av | |
6175 | of AV_CDATA buf => Vector2String buf | |
6176 | | AV_NMTOKEN cs => Data2String cs | |
6177 | | AV_NMTOKENS css => List2xString (""," ","") Data2String css | |
6178 | | AV_ID idx => Id2String idx | |
6179 | | AV_IDREF idx => Id2String idx | |
6180 | | AV_IDREFS idxs => List2xString (""," ","") Id2String idxs | |
6181 | | AV_ENTITY idx => Ent2String idx | |
6182 | | AV_ENTITIES idxs => List2xString (""," ","") Ent2String idxs | |
6183 | | AV_GROUP(_,idx) => Att2String idx | |
6184 | | AV_NOTATION(_,idx) => Not2String idx) | |
6185 | ||
6186 | fun AttDefault2xString funs ad = | |
6187 | case ad | |
6188 | of AD_DEFAULT ((lit,cv,av),_) => | |
6189 | let val quote = Vector.sub(lit,0) | |
6190 | in String.concat [quoteVector quote cv," ", | |
6191 | Option2String0 (AttValue2xString funs quote) av] | |
6192 | end | |
6193 | | AD_FIXED ((lit,cv,av),_) => | |
6194 | let val quote = Vector.sub(lit,0) | |
6195 | in String.concat ["#FIXED ",quoteVector quote cv," ", | |
6196 | Option2String0 (AttValue2xString funs quote) av] | |
6197 | end | |
6198 | | AD_IMPLIED => "#IMPLIED" | |
6199 | | AD_REQUIRED => "#REQUIRED" | |
6200 | ||
6201 | fun AttType2xString (Att2String,Not2String) at = | |
6202 | case at | |
6203 | of AT_CDATA => "CDATA" | |
6204 | | AT_NMTOKEN => "NMTOKEN" | |
6205 | | AT_NMTOKENS => "NMTOKENS" | |
6206 | | AT_ID => "ID" | |
6207 | | AT_IDREF => "IDREF" | |
6208 | | AT_IDREFS => "IDREFS" | |
6209 | | AT_ENTITY => "ENTITY" | |
6210 | | AT_ENTITIES => "ENTITIES" | |
6211 | | AT_GROUP idxs => List2xString ("(","|",")") Att2String idxs | |
6212 | | AT_NOTATION idxs => List2xString ("NOTATION(","|",")") Not2String idxs | |
6213 | ||
6214 | fun AttDef2xString (funs as (Att2String,_,_,Not2String)) (idx,attType,default,ext) = | |
6215 | String.concat [Att2String idx," ", | |
6216 | AttType2xString (Att2String,Not2String) attType," ", | |
6217 | AttDefault2xString funs default, | |
6218 | Bool2xString ("[external]","") ext] | |
6219 | ||
6220 | fun AttDefList2xString funs adl = List2xString ("",",","") (AttDef2xString funs) adl | |
6221 | ||
6222 | fun ElemInfo2xString (Att2String,Elem2String,Ent2String,Id2String,Not2String) | |
6223 | ({decl,atts,...}:ElemInfo) = | |
6224 | let val dec = case decl | |
6225 | of NONE => "elem undeclared" | |
6226 | | SOME(cont,ext) => String.concat | |
6227 | ["elem declared ",if ext then "ex" else "in","ternally: ", | |
6228 | ContentSpec2String Elem2String cont] | |
6229 | val att = case atts | |
6230 | of NONE => "no atts declared" | |
6231 | | SOME(defs,hadId) => String.concat | |
6232 | ["atts were declared",if hadId then "(has id attribute): " else ": ", | |
6233 | AttDefList2xString (Att2String,Ent2String,Id2String,Not2String) defs] | |
6234 | in dec^att | |
6235 | end | |
6236 | ||
6237 | fun IdInfo2String (decl,refs) = | |
6238 | Bool2xString ("declared","undeclared") decl^"/"^ | |
6239 | (if null refs then "no references" | |
6240 | else List2xString ("references: ",", ","") Position2String refs) | |
6241 | end | |
6242 | ||
6243 | (* stop of ../../Parser/Base/baseString.sml *) | |
6244 | (* start of ../../Parser/Base/base.sml *) | |
6245 | ||
6246 | ||
6247 | ||
6248 | structure Base = | |
6249 | struct | |
6250 | open | |
6251 | BaseData | |
6252 | BaseString | |
6253 | end | |
6254 | (* stop of ../../Parser/Base/base.sml *) | |
6255 | (* start of ../../Parser/Params/dtd.sml *) | |
6256 | (*--------------------------------------------------------------------------*) | |
6257 | (* Structure: Dtd *) | |
6258 | (* *) | |
6259 | (* Exceptions raised by functions in this structure: *) | |
6260 | (* AttNot2Index : none *) | |
6261 | (* Element2Index : none *) | |
6262 | (* GenEnt2Index : none *) | |
6263 | (* Id2Index : none *) | |
6264 | (* Index2AttNot : NoSuchIndex *) | |
6265 | (* Index2Element : NoSuchIndex *) | |
6266 | (* Index2GenEnt : NoSuchIndex *) | |
6267 | (* Index2Id : NoSuchIndex *) | |
6268 | (* Index2ParEnt : NoSuchIndex *) | |
6269 | (* ParEnt2Index : none *) | |
6270 | (* entitiesWellformed : none *) | |
6271 | (* getElement : NoSuchIndex *) | |
6272 | (* getGenEnt : NoSuchIndex *) | |
6273 | (* getId : NoSuchIndex *) | |
6274 | (* getNotation : NoSuchIndex *) | |
6275 | (* getParEnt : NoSuchIndex *) | |
6276 | (* hasNotation : NoSuchIndex *) | |
6277 | (* initDtdTables : none *) | |
6278 | (* maxUsedElem : none *) | |
6279 | (* maxUsedId : none *) | |
6280 | (* printAttNotTable : none *) | |
6281 | (* printIdTable : none *) | |
6282 | (* printParEntTable : none *) | |
6283 | (* printxElementTable : none *) | |
6284 | (* printxGenEntTable : none *) | |
6285 | (* setElement : NoSuchIndex *) | |
6286 | (* setGenEnt : NoSuchIndex *) | |
6287 | (* setId : NoSuchIndex *) | |
6288 | (* setNotation : NoSuchIndex *) | |
6289 | (* setParEnt : NoSuchIndex *) | |
6290 | (*--------------------------------------------------------------------------*) | |
6291 | signature Dtd = | |
6292 | sig | |
6293 | type Dtd | |
6294 | ||
6295 | val hasDtd : Dtd -> bool | |
6296 | val hasExternal : Dtd -> bool | |
6297 | val standsAlone : Dtd -> bool | |
6298 | ||
6299 | val setHasDtd : Dtd -> unit | |
6300 | val setExternal : Dtd -> unit | |
6301 | val setStandAlone : Dtd -> bool -> unit | |
6302 | ||
6303 | val entitiesWellformed : Dtd -> bool | |
6304 | ||
6305 | val validPredef : int -> UniChar.Vector | |
6306 | val isRedefined : Dtd -> int -> bool | |
6307 | val setRedefined : Dtd -> int -> unit | |
6308 | val notRedefined : Dtd -> UniChar.Data list | |
6309 | ||
6310 | val AttNot2Index : Dtd -> UniChar.Data -> int | |
6311 | val Element2Index : Dtd -> UniChar.Data -> int | |
6312 | val Id2Index : Dtd -> UniChar.Data -> int | |
6313 | val GenEnt2Index : Dtd -> UniChar.Data -> int | |
6314 | val ParEnt2Index : Dtd -> UniChar.Data -> int | |
6315 | ||
6316 | val Index2Element : Dtd -> int -> UniChar.Data | |
6317 | val Index2Id : Dtd -> int -> UniChar.Data | |
6318 | val Index2GenEnt : Dtd -> int -> UniChar.Data | |
6319 | val Index2AttNot : Dtd -> int -> UniChar.Data | |
6320 | val Index2ParEnt : Dtd -> int -> UniChar.Data | |
6321 | ||
6322 | val getId : Dtd -> int -> Base.IdInfo | |
6323 | val getElement : Dtd -> int -> Base.ElemInfo | |
6324 | val getGenEnt : Dtd -> int -> Base.GenEntInfo | |
6325 | val getNotation : Dtd -> int -> Base.NotationInfo | |
6326 | val getParEnt : Dtd -> int -> Base.ParEntInfo | |
6327 | ||
6328 | val hasNotation : Dtd -> int -> bool | |
6329 | ||
6330 | val setId : Dtd -> int * Base.IdInfo -> unit | |
6331 | val setElement : Dtd -> int * Base.ElemInfo -> unit | |
6332 | val setGenEnt : Dtd -> int * Base.GenEntInfo -> unit | |
6333 | val setNotation : Dtd -> int * Base.ExternalId -> unit | |
6334 | val setParEnt : Dtd -> int * Base.ParEntInfo -> unit | |
6335 | ||
6336 | val maxUsedId : Dtd -> int | |
6337 | val maxUsedElem : Dtd -> int | |
6338 | val maxUsedGen : Dtd -> int | |
6339 | ||
6340 | val initDtdTables : unit -> Dtd | |
6341 | val printDtdTables : Dtd -> unit | |
6342 | ||
6343 | val printAttNotTable : Dtd -> unit | |
6344 | val printIdTable : Dtd -> unit | |
6345 | val printElementTable : Dtd -> unit | |
6346 | val printGenEntTable : Dtd -> unit | |
6347 | val printParEntTable : Dtd -> unit | |
6348 | ||
6349 | val defaultIdx : int | |
6350 | val preserveIdx : int | |
6351 | val xmlLangIdx : int | |
6352 | val xmlSpaceIdx : int | |
6353 | val xmlSpaceType : Base.AttType | |
6354 | end | |
6355 | ||
6356 | structure Dtd :> Dtd = | |
6357 | struct | |
6358 | open | |
6359 | UtilInt | |
6360 | Base UniChar | |
6361 | DataDict DataSymTab | |
6362 | ||
6363 | val O_TS_ELEM = ref 6 (* Initial size of element table *) | |
6364 | val O_TS_GEN_ENT = ref 6 (* Initial size of general entity table *) | |
6365 | val O_TS_ID = ref 6 (* Initial size of id attribute table *) | |
6366 | val O_TS_ATT_NOT = ref 6 (* Initial size of notation table *) | |
6367 | val O_TS_PAR_ENT = ref 6 (* Initial size of parameter entity table *) | |
6368 | ||
6369 | (*--------------------------------------------------------------------*) | |
6370 | (* this is how the predefined entities must be declared. *) | |
6371 | (*--------------------------------------------------------------------*) | |
6372 | val predefined = Vector.fromList | |
6373 | (map (fn (x,y,z) => (String2Data x,String2Vector y,String2Vector z)) | |
6374 | [("","",""), | |
6375 | ("amp" ,"'&'","&"), | |
6376 | ("lt" ,"'<'","<"), | |
6377 | ("gt" ,"'>'",">"), | |
6378 | ("apos","\"'\"" ,"'" ), | |
6379 | ("quot","'\"'" ,"\"" )]) | |
6380 | fun validPredef i = #3(Vector.sub(predefined,i)) | |
6381 | ||
6382 | (*--------------------------------------------------------------------*) | |
6383 | (* this type holds all information relevent to the DTD. *) | |
6384 | (*--------------------------------------------------------------------*) | |
6385 | type Dtd = {hasDtdFlag : bool ref, | |
6386 | standAloneFlag : bool ref, | |
6387 | externalFlag : bool ref, | |
6388 | elDict : ElemInfo DataDict.Dict, | |
6389 | genDict : GenEntInfo DataDict.Dict, | |
6390 | idDict : IdInfo DataDict.Dict, | |
6391 | notDict : NotationInfo DataDict.Dict, | |
6392 | parDict : ParEntInfo DataDict.Dict, | |
6393 | preRedef : bool array | |
6394 | } | |
6395 | ||
6396 | fun newDtd() = {hasDtdFlag = ref false, | |
6397 | standAloneFlag = ref false, | |
6398 | externalFlag = ref false, | |
6399 | elDict = nullDict ("element",nullElemInfo), | |
6400 | idDict = nullDict ("ID name",nullIdInfo), | |
6401 | genDict = nullDict ("general entity",(GE_NULL,false)), | |
6402 | notDict = nullDict ("attribute and notation",NONE:NotationInfo), | |
6403 | parDict = nullDict ("parameter entity",(PE_NULL,false)), | |
6404 | preRedef = Array.array(6,false) | |
6405 | } : Dtd | |
6406 | ||
6407 | val default = String2Data "default" | |
6408 | val preserve = String2Data "preserve" | |
6409 | val xmlLang = String2Data "xml:lang" | |
6410 | val xmlSpace = String2Data "xml:space" | |
6411 | ||
6412 | (*--------------------------------------------------------------------*) | |
6413 | (* standalone status, existance of a DTD and of external declarations *) | |
6414 | (* externalFlag is true if there is an external subset or a (not nece-*) | |
6415 | (* ssarily external) parameter entity reference in the DTD. (cf. 4.1) *) | |
6416 | (*--------------------------------------------------------------------*) | |
6417 | fun standsAlone (dtd:Dtd) = !(#standAloneFlag dtd) | |
6418 | fun hasExternal (dtd:Dtd) = !(#externalFlag dtd) | |
6419 | fun hasDtd (dtd:Dtd) = !(#hasDtdFlag dtd) | |
6420 | ||
6421 | fun setHasDtd (dtd:Dtd) = #hasDtdFlag dtd := true | |
6422 | fun setExternal (dtd:Dtd) = #externalFlag dtd := true | |
6423 | fun setStandAlone (dtd:Dtd) x = #standAloneFlag dtd := x | |
6424 | ||
6425 | ||
6426 | (*--------------------------------------------------------------------*) | |
6427 | (* 4.1: *) | |
6428 | (* Well-Formedness Constraint: Entity Declared *) | |
6429 | (* In a document without any DTD, a document with only an internal *) | |
6430 | (* DTD subset which contains no parameter entity references, or a *) | |
6431 | (* document with "standalone='yes'", the Name given in the entity *) | |
6432 | (* reference must match that in an entity declaration ... Note that *) | |
6433 | (* if entities are declared in the external subset or in external *) | |
6434 | (* parameter entities, a non-validating processor is not obligated *) | |
6435 | (* to read and process their declarations; for such documents, the *) | |
6436 | (* rule that an entity must be declared is a well-formedness *) | |
6437 | (* constraint only if standalone='yes'. *) | |
6438 | (* *) | |
6439 | (* Thus a reference to an undeclared entity is a well-formedness *) | |
6440 | (* error if either #hasDtdFlag or #externalFlag is false, or if *) | |
6441 | (* #standaloneFlag is true *) | |
6442 | (*--------------------------------------------------------------------*) | |
6443 | (* bug fixed 080600: changed !hasDtdFlag to not(!hasDtdFlag) *) | |
6444 | (*--------------------------------------------------------------------*) | |
6445 | fun entitiesWellformed ({hasDtdFlag,standAloneFlag,externalFlag,...}:Dtd) = | |
6446 | not (!hasDtdFlag andalso !externalFlag) orelse !standAloneFlag | |
6447 | ||
6448 | fun initStandalone ({hasDtdFlag,standAloneFlag,externalFlag,...}:Dtd) = | |
6449 | (hasDtdFlag := false; standAloneFlag := false; externalFlag := false) | |
6450 | ||
6451 | (*--------------------------------------------------------------------*) | |
6452 | (* this array tells whether the predefined entities (index 1-5) have *) | |
6453 | (* been declared in the dtd. *) | |
6454 | (*--------------------------------------------------------------------*) | |
6455 | fun isRedefined (dtd:Dtd) i = Array.sub(#preRedef dtd,i) | |
6456 | fun setRedefined (dtd:Dtd) i = Array.update(#preRedef dtd,i,true) | |
6457 | fun notRedefined dtd = List.mapPartial | |
6458 | (fn i => if isRedefined dtd i then NONE else SOME(#1(Vector.sub(predefined,i)))) | |
6459 | [1,2,3,4,5] | |
6460 | ||
6461 | fun AttNot2Index (dtd:Dtd) name = getIndex(#notDict dtd,name) | |
6462 | fun Element2Index (dtd:Dtd) name = getIndex(#elDict dtd,name) | |
6463 | fun GenEnt2Index (dtd:Dtd) name = getIndex(#genDict dtd,name) | |
6464 | fun Id2Index (dtd:Dtd) name = getIndex(#idDict dtd,name) | |
6465 | fun ParEnt2Index (dtd:Dtd) name = getIndex(#parDict dtd,name) | |
6466 | ||
6467 | fun Index2AttNot (dtd:Dtd) idx = getKey(#notDict dtd,idx) | |
6468 | fun Index2Element (dtd:Dtd) idx = getKey(#elDict dtd,idx) | |
6469 | fun Index2GenEnt (dtd:Dtd) idx = getKey(#genDict dtd,idx) | |
6470 | fun Index2Id (dtd:Dtd) idx = getKey(#idDict dtd,idx) | |
6471 | fun Index2ParEnt (dtd:Dtd) idx = getKey(#parDict dtd,idx) | |
6472 | ||
6473 | fun getElement (dtd:Dtd) idx = getByIndex(#elDict dtd,idx) | |
6474 | fun getGenEnt (dtd:Dtd) idx = getByIndex(#genDict dtd,idx) | |
6475 | fun getId (dtd:Dtd) idx = getByIndex(#idDict dtd,idx) | |
6476 | fun getNotation (dtd:Dtd) idx = getByIndex(#notDict dtd,idx) | |
6477 | fun getParEnt (dtd:Dtd) idx = getByIndex(#parDict dtd,idx) | |
6478 | ||
6479 | fun hasNotation (dtd:Dtd) idx = isSome(getByIndex(#notDict dtd,idx)) | |
6480 | ||
6481 | fun setElement (dtd:Dtd) (idx,el) = setByIndex(#elDict dtd,idx,el) | |
6482 | fun setGenEnt (dtd:Dtd) (idx,ge) = setByIndex(#genDict dtd,idx,ge) | |
6483 | fun setId (dtd:Dtd) (idx,a) = setByIndex(#idDict dtd,idx,a) | |
6484 | fun setNotation (dtd:Dtd) (idx,nt) = setByIndex(#notDict dtd,idx,SOME nt) | |
6485 | fun setParEnt (dtd:Dtd) (idx,pe) = setByIndex(#parDict dtd,idx,pe) | |
6486 | ||
6487 | fun maxUsedElem (dtd:Dtd) = usedIndices(#elDict dtd)-1 | |
6488 | fun maxUsedGen (dtd:Dtd) = usedIndices(#genDict dtd)-1 | |
6489 | fun maxUsedId (dtd:Dtd) = usedIndices(#idDict dtd)-1 | |
6490 | ||
6491 | (*--------------------------------------------------------------------*) | |
6492 | (* initialize the attribute tables. Make sure that indices 0...3 are *) | |
6493 | (* assigned to "default", "preserve", "xml:lang" and "xml:space". *) | |
6494 | (*--------------------------------------------------------------------*) | |
6495 | fun initAttNotTable (dtd as {idDict,notDict,...}:Dtd) = | |
6496 | let | |
6497 | val _ = clearDict(notDict,SOME(!O_TS_ATT_NOT)) | |
6498 | val _ = clearDict(idDict,SOME(!O_TS_ID)) | |
6499 | val _ = AttNot2Index dtd default | |
6500 | val _ = AttNot2Index dtd preserve | |
6501 | val _ = AttNot2Index dtd xmlLang | |
6502 | val _ = AttNot2Index dtd xmlSpace | |
6503 | in () | |
6504 | end | |
6505 | fun initElementTable (dtd:Dtd) = clearDict(#elDict dtd,SOME(!O_TS_ELEM)) | |
6506 | (*--------------------------------------------------------------------*) | |
6507 | (* reserve 0 for gen entity -, i.e., the document entity. *) | |
6508 | (* reserve 1 for gen entity amp, i.e., "&#38;" *) | |
6509 | (* reserve 2 for gen entity lt, i.e., "&#60;" *) | |
6510 | (* reserve 3 for gen entity gt, i.e., ">" *) | |
6511 | (* reserve 4 for gen entity apos, i.e., "'" *) | |
6512 | (* reserve 5 for gen entity quot, i.e., """ *) | |
6513 | (* reserve 0 for par entity -, i.e., the external dtd subset. *) | |
6514 | (* *) | |
6515 | (* Cf. 4.1: *) | |
6516 | (* *) | |
6517 | (* ... except that well-formed documents need not declare any of *) | |
6518 | (* the following entities: amp, lt, gt, apos, quot. *) | |
6519 | (* *) | |
6520 | (* and 4.6: *) | |
6521 | (* *) | |
6522 | (* <!ENTITY lt "&#60;"> *) | |
6523 | (* <!ENTITY gt ">"> *) | |
6524 | (* <!ENTITY amp "&#38;"> *) | |
6525 | (* <!ENTITY apos "'"> *) | |
6526 | (* <!ENTITY quot """> *) | |
6527 | (*--------------------------------------------------------------------*) | |
6528 | fun initEntityTables (dtd as {genDict,parDict,preRedef,...}:Dtd) = | |
6529 | let | |
6530 | val _ = clearDict(genDict,SOME(!O_TS_GEN_ENT)) | |
6531 | val _ = clearDict(parDict,SOME(!O_TS_PAR_ENT)) | |
6532 | val _ = map (fn i => Array.update(preRedef,i,false)) [1,2,3,4,5] | |
6533 | val _ = GenEnt2Index dtd [0wx2D] (* "-" *) | |
6534 | val _ = ParEnt2Index dtd [0wx2D] (* "-" *) | |
6535 | val _ = Vector.appi | |
6536 | (fn (_,(name,lit,cs)) | |
6537 | => (setGenEnt dtd (GenEnt2Index dtd name,(GE_INTERN(lit,cs),false)))) | |
6538 | (predefined,1,NONE) | |
6539 | in () | |
6540 | end | |
6541 | ||
6542 | fun initDtdTables() = | |
6543 | let | |
6544 | val dtd = newDtd() | |
6545 | val _ = initAttNotTable dtd | |
6546 | val _ = initElementTable dtd | |
6547 | val _ = initEntityTables dtd | |
6548 | val _ = initStandalone dtd | |
6549 | in dtd | |
6550 | end | |
6551 | ||
6552 | local | |
6553 | val dtd = initDtdTables() | |
6554 | in | |
6555 | val defaultIdx = AttNot2Index dtd default | |
6556 | val preserveIdx = AttNot2Index dtd preserve | |
6557 | val xmlLangIdx = AttNot2Index dtd xmlLang | |
6558 | val xmlSpaceIdx = AttNot2Index dtd xmlSpace | |
6559 | val xmlSpaceType = AT_GROUP (IntLists.addIntList (preserveIdx,[defaultIdx])) | |
6560 | end | |
6561 | ||
6562 | fun printAttNotTable (dtd:Dtd) = | |
6563 | printDict NotationInfo2String (#notDict dtd) | |
6564 | fun printElementTable dtd = | |
6565 | printDict (ElemInfo2xString (UniChar.Data2String o (Index2AttNot dtd), | |
6566 | UniChar.Data2String o (Index2Element dtd), | |
6567 | UniChar.Data2String o (Index2GenEnt dtd), | |
6568 | UniChar.Data2String o (Index2Id dtd), | |
6569 | UniChar.Data2String o (Index2AttNot dtd))) (#elDict dtd) | |
6570 | fun printGenEntTable dtd = | |
6571 | printDict (fn (ent,ext) => GenEntity2xString (Data2String o (Index2AttNot dtd)) ent | |
6572 | ^(if ext then "[external]" else "")) (#genDict dtd) | |
6573 | fun printIdTable (dtd:Dtd) = printDict (IdInfo2String) (#idDict dtd) | |
6574 | fun printParEntTable (dtd:Dtd) = | |
6575 | printDict (fn (ent,ext) => ParEntity2String ent | |
6576 | ^(if ext then "[external]" else "")) (#parDict dtd) | |
6577 | ||
6578 | fun printDtdTables dtd = (printAttNotTable dtd; | |
6579 | printElementTable dtd; | |
6580 | printGenEntTable dtd; | |
6581 | printIdTable dtd; | |
6582 | printParEntTable dtd) | |
6583 | end | |
6584 | (* stop of ../../Parser/Params/dtd.sml *) | |
6585 | (* start of ../../Parser/Params/hookData.sml *) | |
6586 | structure HookData = | |
6587 | struct | |
6588 | type StartEnd = Errors.Position * Errors.Position | |
6589 | (*--------------------------------------------------------------------*) | |
6590 | (* a text declaration consists of a version info and an encoding decl.*) | |
6591 | (* an xml declaration has an additional standalone decl. *) | |
6592 | (*--------------------------------------------------------------------*) | |
6593 | type TextDecl = string option * string option | |
6594 | type XmlDecl = string option * string option * bool option | |
6595 | ||
6596 | type XmlInfo = Uri.Uri * Encoding.Encoding * XmlDecl option | |
6597 | type ExtSubsetInfo = Uri.Uri * Encoding.Encoding * TextDecl option | |
6598 | type SubsetInfo = Errors.Position | |
6599 | type EndDtdInfo = Errors.Position | |
6600 | ||
6601 | type ErrorInfo = Errors.Position * Errors.Error | |
6602 | type WarningInfo = Errors.Position * Errors.Warning | |
6603 | type NoFileInfo = string * string | |
6604 | ||
6605 | type CommentInfo = StartEnd * UniChar.Vector | |
6606 | type ProcInstInfo = StartEnd * UniChar.Data * Errors.Position * UniChar.Vector | |
6607 | ||
6608 | type DtdInfo = int * Base.ExternalId option | |
6609 | ||
6610 | datatype AttPresent = | |
6611 | AP_IMPLIED | |
6612 | | AP_MISSING | |
6613 | | AP_DEFAULT of UniChar.Vector * UniChar.Vector * Base.AttValue option | |
6614 | | AP_PRESENT of UniChar.Vector * UniChar.Vector * Base.AttValue option | |
6615 | ||
6616 | type AttSpec = int * AttPresent * (UniChar.Data * UniChar.Data) option | |
6617 | type AttSpecList = AttSpec list | |
6618 | ||
6619 | type EndTagInfo = StartEnd * int * (int * UniChar.Data) option | |
6620 | type StartTagInfo = StartEnd * int * AttSpecList * UniChar.Data * bool | |
6621 | type WhiteInfo = UniChar.Vector | |
6622 | type CDataInfo = StartEnd * UniChar.Vector | |
6623 | type DataInfo = StartEnd * UniChar.Vector * bool | |
6624 | ||
6625 | type CharRefInfo = StartEnd * UniChar.Char * UniChar.Vector | |
6626 | type GenRefInfo = StartEnd * int * Base.GenEntity * bool | |
6627 | type ParRefInfo = StartEnd * int * Base.ParEntity * bool | |
6628 | type EntEndInfo = Errors.Position | |
6629 | ||
6630 | datatype MarkupDecl = | |
6631 | DEC_ATTLIST of int * (int * Base.AttType * Base.AttDefault) list * bool | |
6632 | | DEC_ELEMENT of int * Base.ContentSpec * bool | |
6633 | | DEC_GEN_ENT of int * Base.GenEntity * bool | |
6634 | | DEC_PAR_ENT of int * Base.ParEntity * bool | |
6635 | | DEC_NOTATION of int * Base.ExternalId * bool | |
6636 | type DeclInfo = StartEnd * MarkupDecl | |
6637 | ||
6638 | fun isExtDecl decl = | |
6639 | case decl | |
6640 | of DEC_ATTLIST(_,_,ext) => ext | |
6641 | | DEC_ELEMENT(_,_,ext) => ext | |
6642 | | DEC_GEN_ENT(_,_,ext) => ext | |
6643 | | DEC_PAR_ENT(_,_,ext) => ext | |
6644 | | DEC_NOTATION(_,_,ext) => ext | |
6645 | end | |
6646 | (* stop of ../../Parser/Params/hookData.sml *) | |
6647 | (* start of ../../Parser/Params/hooks.sml *) | |
6648 | ||
6649 | ||
6650 | ||
6651 | signature Hooks = | |
6652 | sig | |
6653 | type AppData | |
6654 | type AppFinal | |
6655 | ||
6656 | val hookXml : AppData * HookData.XmlInfo -> AppData | |
6657 | val hookFinish : AppData -> AppFinal | |
6658 | ||
6659 | val hookError : AppData * HookData.ErrorInfo -> AppData | |
6660 | val hookWarning : AppData * HookData.WarningInfo -> AppData | |
6661 | ||
6662 | val hookProcInst : AppData * HookData.ProcInstInfo -> AppData | |
6663 | val hookComment : AppData * HookData.CommentInfo -> AppData | |
6664 | val hookWhite : AppData * HookData.WhiteInfo -> AppData | |
6665 | val hookDecl : AppData * HookData.DeclInfo -> AppData | |
6666 | ||
6667 | val hookStartTag : AppData * HookData.StartTagInfo -> AppData | |
6668 | val hookEndTag : AppData * HookData.EndTagInfo -> AppData | |
6669 | val hookCData : AppData * HookData.CDataInfo -> AppData | |
6670 | val hookData : AppData * HookData.DataInfo -> AppData | |
6671 | ||
6672 | val hookCharRef : AppData * HookData.CharRefInfo -> AppData | |
6673 | val hookGenRef : AppData * HookData.GenRefInfo -> AppData | |
6674 | val hookParRef : AppData * HookData.ParRefInfo -> AppData | |
6675 | val hookEntEnd : AppData * HookData.EntEndInfo -> AppData | |
6676 | ||
6677 | val hookDocType : AppData * HookData.DtdInfo -> AppData | |
6678 | val hookSubset : AppData * HookData.SubsetInfo -> AppData | |
6679 | val hookExtSubset : AppData * HookData.ExtSubsetInfo -> AppData | |
6680 | val hookEndDtd : AppData * HookData.EndDtdInfo -> AppData | |
6681 | end | |
6682 | (* stop of ../../Parser/Params/hooks.sml *) | |
6683 | (* start of ../../Parser/Params/resolve.sml *) | |
6684 | ||
6685 | ||
6686 | ||
6687 | ||
6688 | signature Resolve = | |
6689 | sig | |
6690 | val resolveExtId : Base.ExternalId -> Uri.Uri | |
6691 | end | |
6692 | ||
6693 | structure ResolveNull : Resolve = | |
6694 | struct | |
6695 | open Base Errors Uri | |
6696 | ||
6697 | fun resolveExtId (EXTID(_,sys)) = | |
6698 | case sys | |
6699 | of NONE => raise NoSuchFile ("","Could not generate system identifier") | |
6700 | | SOME (base,file,_) => uriJoin(base,file) | |
6701 | end | |
6702 | (* stop of ../../Parser/Params/resolve.sml *) | |
6703 | (* start of ../../Parser/Dfa/dfaUtil.sml *) | |
6704 | ||
6705 | ||
6706 | ||
6707 | ||
6708 | ||
6709 | ||
6710 | (*--------------------------------------------------------------------------*) | |
6711 | (* Structure: DfaUtil *) | |
6712 | (* *) | |
6713 | (* Depends on: *) | |
6714 | (* DfaData *) | |
6715 | (* UtilInt *) | |
6716 | (* *) | |
6717 | (* Exceptions raised by functions in this structure: *) | |
6718 | (* boundsFollow : none *) | |
6719 | (* cmSymbols : none *) | |
6720 | (* makeRow : none *) | |
6721 | (* mergeFirst : ConflictFirst *) | |
6722 | (* mergeFollow : ConflictFollow *) | |
6723 | (*--------------------------------------------------------------------------*) | |
6724 | signature DfaUtil = | |
6725 | sig | |
6726 | val mergeFirst : bool -> DfaBase.First * DfaBase.First -> DfaBase.First | |
6727 | val mergeFollow : bool -> DfaBase.Follow * DfaBase.Follow -> DfaBase.Follow | |
6728 | val boundsFollow : DfaBase.Follow -> DfaBase.Sigma * DfaBase.Sigma | |
6729 | val cmSymbols : DfaBase.ContentModel -> DfaBase.Sigma list | |
6730 | val makeRow : DfaBase.Follow * bool -> DfaBase.Row | |
6731 | end | |
6732 | ||
6733 | structure DfaUtil : DfaUtil = | |
6734 | struct | |
6735 | open UtilInt DfaBase | |
6736 | ||
6737 | (*--------------------------------------------------------------------*) | |
6738 | (* merge two First sets, raise ConflictFirst at conflict: there may *) | |
6739 | (* not be two entries (q1,a) and (q2,a) in the same First set, if *) | |
6740 | (* nondet is false. *) | |
6741 | (*--------------------------------------------------------------------*) | |
6742 | fun mergeFirst nondet ll = | |
6743 | let | |
6744 | fun go_det (nil,l) = l | |
6745 | | go_det (l,nil) = l | |
6746 | | go_det (l1 as (x1 as (q1,a1))::r1,l2 as (x2 as (q2,a2))::r2) = | |
6747 | case Int.compare(a1,a2) | |
6748 | of LESS => x1::go_det(r1,l2) | |
6749 | | GREATER => x2::go_det(l1,r2) | |
6750 | | EQUAL => raise ConflictFirst(a1,q1,q2) | |
6751 | ||
6752 | fun go_nondet (nil,l) = l | |
6753 | | go_nondet (l,nil) = l | |
6754 | | go_nondet (l1 as (x1 as (q1,a1))::r1,l2 as (x2 as (q2,a2))::r2) = | |
6755 | case Int.compare(a1,a2) | |
6756 | of LESS => x1::go_nondet(r1,l2) | |
6757 | | GREATER => x2::go_nondet(l1,r2) | |
6758 | | EQUAL => case Int.compare(q1,q2) | |
6759 | of LESS => x1::go_nondet(r1,l2) | |
6760 | | GREATER => x2::go_nondet(l1,r2) | |
6761 | | EQUAL => go_nondet(l1,r2) | |
6762 | in | |
6763 | if nondet then go_nondet ll else go_det ll | |
6764 | end | |
6765 | ||
6766 | (*--------------------------------------------------------------------*) | |
6767 | (* merge two Follow sets, raise ConflictFollow at conflict. there may *) | |
6768 | (* not be two entries (q1,a) and (q2,a) with q1<>q2 in the same Follow*) | |
6769 | (* set, if nondet is false. Note that, e.g. for (a+)+, Follow(a) = *) | |
6770 | (* Follow(a+) U First(a+), so duplicate occurrences of the same (q,a) *) | |
6771 | (* are possible (as opposed to First). *) | |
6772 | (*--------------------------------------------------------------------*) | |
6773 | fun mergeFollow nondet ll = | |
6774 | let | |
6775 | fun go_det (nil,l) = l | |
6776 | | go_det (l,nil) = l | |
6777 | | go_det (l1 as (x1 as (q1,a1))::r1,l2 as (x2 as (q2,a2))::r2) = | |
6778 | case Int.compare(a1,a2) | |
6779 | of LESS => x1::go_det(r1,l2) | |
6780 | | GREATER => x2::go_det(l1,r2) | |
6781 | | EQUAL => if q1=q2 then go_det(l1,r2) | |
6782 | else raise ConflictFollow(a1,q1,q2) | |
6783 | ||
6784 | fun go_nondet (nil,l) = l | |
6785 | | go_nondet (l,nil) = l | |
6786 | | go_nondet (l1 as (x1 as (q1,a1))::r1,l2 as (x2 as (q2,a2))::r2) = | |
6787 | case Int.compare(a1,a2) | |
6788 | of LESS => x1::go_nondet(r1,l2) | |
6789 | | GREATER => x2::go_nondet(l1,r2) | |
6790 | | EQUAL => case Int.compare(q1,q2) | |
6791 | of LESS => x1::go_nondet(r1,l2) | |
6792 | | GREATER => x2::go_nondet(l1,r2) | |
6793 | | EQUAL => go_nondet(l1,r2) | |
6794 | in | |
6795 | if nondet then go_nondet ll else go_det ll | |
6796 | end | |
6797 | ||
6798 | (*--------------------------------------------------------------------*) | |
6799 | (* what are the least and largest symbol occurring in a Follow set? *) | |
6800 | (*--------------------------------------------------------------------*) | |
6801 | fun boundsFollow (nil:Follow) = (1,0) | |
6802 | | boundsFollow [(q,a)] = (a,a) | |
6803 | | boundsFollow ((q,a)::xs) = (a,#2(List.last xs)) | |
6804 | ||
6805 | (*--------------------------------------------------------------------*) | |
6806 | (* return the list of all symbols occurring in a content model. *) | |
6807 | (*--------------------------------------------------------------------*) | |
6808 | fun cmSymbols cm = | |
6809 | let | |
6810 | fun do_cm(cm,yet) = | |
6811 | case cm | |
6812 | of CM_ELEM a => insertInt(a,yet) | |
6813 | | CM_OPT cm => do_cm(cm,yet) | |
6814 | | CM_REP cm => do_cm(cm,yet) | |
6815 | | CM_PLUS cm => do_cm(cm,yet) | |
6816 | | CM_ALT cms => foldr do_cm yet cms | |
6817 | | CM_SEQ cms => foldr do_cm yet cms | |
6818 | in do_cm(cm,nil) | |
6819 | end | |
6820 | ||
6821 | (*--------------------------------------------------------------------*) | |
6822 | (* given the follow set and the final flag, make a row in the dfa. *) | |
6823 | (*--------------------------------------------------------------------*) | |
6824 | fun makeRow (flw,fin) = | |
6825 | let | |
6826 | val (lo,hi) = boundsFollow flw | |
6827 | val tab = Array.array(hi-lo+1,dfaError) | |
6828 | val _ = app (fn (q,a) => Array.update (tab,a-lo,q)) flw | |
6829 | in | |
6830 | (lo,hi,Array.extract (tab,0,NONE),fin) | |
6831 | end | |
6832 | ||
6833 | end | |
6834 | (* stop of ../../Parser/Dfa/dfaUtil.sml *) | |
6835 | (* start of ../../Util/intSets.sml *) | |
6836 | ||
6837 | ||
6838 | ||
6839 | ||
6840 | ||
6841 | ||
6842 | ||
6843 | signature IntSets = | |
6844 | sig | |
6845 | eqtype IntSet | |
6846 | ||
6847 | val emptyIntSet : IntSet | |
6848 | val singleIntSet : int -> IntSet | |
6849 | val fullIntSet : int -> IntSet | |
6850 | ||
6851 | val isEmptyIntSet : IntSet -> bool | |
6852 | val inIntSet : int * IntSet -> bool | |
6853 | ||
6854 | val compareIntSets: IntSet * IntSet -> order | |
6855 | val hashIntSet : IntSet -> word | |
6856 | ||
6857 | val addIntSet : int * IntSet -> IntSet | |
6858 | val delIntSet : int * IntSet -> IntSet | |
6859 | ||
6860 | val cupIntSets : IntSet * IntSet -> IntSet | |
6861 | val capIntSets : IntSet * IntSet -> IntSet | |
6862 | val diffIntSets : IntSet * IntSet -> IntSet | |
6863 | ||
6864 | val IntSet2List : IntSet -> int list | |
6865 | val IntList2Set : int list -> IntSet | |
6866 | end | |
6867 | ||
6868 | structure IntSets : IntSets = | |
6869 | struct | |
6870 | structure W = Word32 | |
6871 | val wordSize = W.wordSize | |
6872 | ||
6873 | type IntSet = W.word vector | |
6874 | ||
6875 | infix 7 << >> | |
6876 | infix 6 && | |
6877 | infix 5 || | |
6878 | ||
6879 | val op >> = W.>> | |
6880 | val op << = W.<< | |
6881 | val op && = W.andb | |
6882 | val op || = W.orb | |
6883 | val !! = W.notb | |
6884 | ||
6885 | fun normalize (vec:IntSet) = | |
6886 | let val max = Vector.foldli | |
6887 | (fn (i,w,max) => if w=0wx0 then i else max) 0 (vec,0,NONE) | |
6888 | in Vector.extract (vec,0,SOME max) | |
6889 | end | |
6890 | ||
6891 | val emptyIntSet = Vector.fromList nil : IntSet | |
6892 | ||
6893 | fun fullIntSet n = let val size = (n+wordSize-1) div wordSize | |
6894 | val full = 0w0-0w1:W.word | |
6895 | val bits = (n-1) mod wordSize+1 | |
6896 | val last = full >> (Word.fromInt (wordSize-bits)) | |
6897 | in Vector.tabulate(n div wordSize+1, | |
6898 | fn i => if i<size-1 then full else last):IntSet | |
6899 | end | |
6900 | ||
6901 | fun singleIntSet n = | |
6902 | let | |
6903 | val idx = n div wordSize | |
6904 | val mask = 0w1 << (Word.fromInt (n mod wordSize)) | |
6905 | in | |
6906 | Vector.tabulate(idx+1,fn i => if i=idx then mask else 0w0):IntSet | |
6907 | end | |
6908 | ||
6909 | fun isEmptyIntSet vec = Vector.length vec=0 | |
6910 | ||
6911 | fun inIntSet(n,vec) = | |
6912 | let val idx = n div wordSize | |
6913 | in if idx>=Vector.length vec then false | |
6914 | else let val mask = 0w1 << (Word.fromInt (n mod wordSize)) | |
6915 | in Vector.sub(vec,idx) && mask <> 0w0 | |
6916 | end | |
6917 | end | |
6918 | ||
6919 | fun addIntSet(n,vec) = | |
6920 | let | |
6921 | val idx = n div wordSize | |
6922 | val mask = 0w1 << (Word.fromInt (n mod wordSize)) | |
6923 | val size = Vector.length vec | |
6924 | in | |
6925 | if size>idx | |
6926 | then Vector.mapi (fn (i,x) => if i=idx then x||mask else x) (vec,0,NONE) | |
6927 | else Vector.tabulate | |
6928 | (idx+1,fn i => if i<size then Vector.sub(vec,i) else if i=idx then mask else 0w0) | |
6929 | end | |
6930 | ||
6931 | fun delIntSet(n,vec) = | |
6932 | let | |
6933 | val idx = n div wordSize | |
6934 | val size = Vector.length vec | |
6935 | val vec1 = if size<=idx then vec | |
6936 | else let val mask = !! (0w1 << (Word.fromInt (n mod wordSize))) | |
6937 | in Vector.mapi | |
6938 | (fn (i,x) => if i=idx then x && mask else x) (vec,0,NONE) | |
6939 | end | |
6940 | in normalize vec1 | |
6941 | end | |
6942 | ||
6943 | fun capIntSets(vec1,vec2) = | |
6944 | let | |
6945 | val l12 = Int.min(Vector.length vec1,Vector.length vec2) | |
6946 | val v12 = Vector.tabulate(l12,fn i => Vector.sub(vec1,i) && Vector.sub(vec2,i)) | |
6947 | in | |
6948 | normalize v12 | |
6949 | end | |
6950 | ||
6951 | fun cupIntSets(vec1,vec2) = | |
6952 | let | |
6953 | val (l1,l2) = (Vector.length vec1,Vector.length vec2) | |
6954 | val (shorter,longer,v) = if l1<=l2 then (l1,l2,vec2) else (l2,l1,vec1) | |
6955 | in | |
6956 | Vector.tabulate (longer,fn i => if i>=shorter then Vector.sub(v,i) | |
6957 | else Vector.sub(vec1,i) || Vector.sub(vec2,i)) | |
6958 | end | |
6959 | ||
6960 | fun diffIntSets(vec1,vec2) = | |
6961 | let | |
6962 | val (l1,l2) = (Vector.length vec1,Vector.length vec2) | |
6963 | val vec1 = Vector.tabulate | |
6964 | (l1,fn i => if i>=l2 then Vector.sub(vec1,i) | |
6965 | else Vector.sub(vec1,i) && !!(Vector.sub(vec2,i))) | |
6966 | in normalize vec1 | |
6967 | end | |
6968 | ||
6969 | fun IntList2Set l = List.foldl addIntSet emptyIntSet l | |
6970 | ||
6971 | fun IntSet2List vec = | |
6972 | let | |
6973 | val size = Vector.length vec | |
6974 | fun doOne (w,off,yet) = | |
6975 | let fun doit (i,mask) = | |
6976 | if i=wordSize then yet | |
6977 | else if w&&mask=0w0 then doit(i+1,mask<<0wx1) | |
6978 | else (off+i)::doit(i+1,mask<<0wx1) | |
6979 | in doit(0,0wx1) | |
6980 | end | |
6981 | fun doAll i = if i>=size then nil | |
6982 | else doOne(Vector.sub(vec,i),wordSize*i,(doAll (i+1))) | |
6983 | in doAll 0 | |
6984 | end | |
6985 | ||
6986 | fun compareIntSets (vec1,vec2:IntSet) = | |
6987 | let | |
6988 | val (l1,l2) = (Vector.length vec1,Vector.length vec2) | |
6989 | val (l12,ifEq) = case Int.compare(l1,l2) | |
6990 | of LESS => (l1,LESS) | |
6991 | | order => (l2,order) | |
6992 | fun doit i = if i>=l12 then ifEq | |
6993 | else case W.compare(Vector.sub(vec1,i),Vector.sub(vec2,i)) | |
6994 | of EQUAL => doit (i+1) | |
6995 | | order => order | |
6996 | in doit 0 | |
6997 | end | |
6998 | ||
6999 | val intShift = case Int.precision | |
7000 | of NONE => 0w0 | |
7001 | | SOME x => Word.fromInt(Int.max(wordSize-x+1,0)) | |
7002 | ||
7003 | fun hashIntSet vec = | |
7004 | case Vector.length vec | |
7005 | of 0 => 0w0 | |
7006 | | 1 => Word.fromInt(W.toInt(W.>>(Vector.sub(vec,0),intShift))) | |
7007 | | l => Word.fromInt(W.toInt(W.>>(Vector.sub(vec,0)+Vector.sub(vec,l-1),intShift))) | |
7008 | end | |
7009 | (* stop of ../../Util/intSets.sml *) | |
7010 | (* start of ../../Util/SymDict/intSetDict.sml *) | |
7011 | ||
7012 | ||
7013 | ||
7014 | ||
7015 | ||
7016 | ||
7017 | ||
7018 | structure KeyIntSet : Key = | |
7019 | struct | |
7020 | open IntSets UtilString | |
7021 | ||
7022 | type Key = IntSet | |
7023 | ||
7024 | val null = emptyIntSet | |
7025 | val hash = hashIntSet | |
7026 | val compare = compareIntSets | |
7027 | val toString = (List2xString ("{",",","}") Int2String) o IntSet2List | |
7028 | end | |
7029 | ||
7030 | structure IntSetDict = Dict (structure Key = KeyIntSet) | |
7031 | structure IntSetSymTab = SymTable (structure Key = KeyIntSet) | |
7032 | ||
7033 | ||
7034 | (* stop of ../../Util/SymDict/intSetDict.sml *) | |
7035 | (* start of ../../Parser/Dfa/dfaPassThree.sml *) | |
7036 | ||
7037 | ||
7038 | ||
7039 | ||
7040 | ||
7041 | ||
7042 | ||
7043 | ||
7044 | ||
7045 | ||
7046 | ||
7047 | (*--------------------------------------------------------------------------*) | |
7048 | (* Structure: DfaPassThree *) | |
7049 | (* *) | |
7050 | (* Depends on: *) | |
7051 | (* DfaData *) | |
7052 | (* DfaUtil *) | |
7053 | (* IntSets *) | |
7054 | (* IntSetDict *) | |
7055 | (* ParseOptions *) | |
7056 | (* *) | |
7057 | (* Exceptions raised by functions in this structure: *) | |
7058 | (* passThree : TooLarge *) | |
7059 | (*--------------------------------------------------------------------------*) | |
7060 | signature DfaPassThree = | |
7061 | sig | |
7062 | val passThree: bool -> (DfaBase.Follow * bool) vector -> DfaBase.Dfa | |
7063 | end | |
7064 | ||
7065 | functor DfaPassThree (structure DfaOptions : DfaOptions) : DfaPassThree = | |
7066 | struct | |
7067 | open | |
7068 | IntSets IntSetDict DfaBase DfaOptions DfaUtil | |
7069 | ||
7070 | (*--------------------------------------------------------------------*) | |
7071 | (* do the subset construction. *) | |
7072 | (*--------------------------------------------------------------------*) | |
7073 | (* given an automaton (Q,q0,F,delta), the subset automaton is *) | |
7074 | (* (Q',q0',F',delta') with: *) | |
7075 | (* - Q' = 2^Q *) | |
7076 | (* - q0'= {q0} *) | |
7077 | (* - F' = {S | S cap F <> empty} *) | |
7078 | (* - delta'(S,a) = {p | (q,a,p) in delta, q in S} *) | |
7079 | (*--------------------------------------------------------------------*) | |
7080 | fun makeDet tab = | |
7081 | let | |
7082 | (* the new start state is the singleton of the old start state *) | |
7083 | val sNull = singleIntSet 0 | |
7084 | ||
7085 | (* create a dictionary for the subsets, make sNull get index 0 *) | |
7086 | val tau = makeDict("",!O_DFA_INITIAL_WIDTH,(nil:Follow,false)) | |
7087 | val pInitial = getIndex(tau,sNull) | |
7088 | ||
7089 | (* enter a new set state. raise DfaTooLarge if the new state *) | |
7090 | (* would have a too large index *) | |
7091 | fun makeState s = | |
7092 | let val (max,i) = (!O_DFA_MAX_STATES,getIndex(tau,s)) | |
7093 | in if max>i then i else raise DfaTooLarge max | |
7094 | end | |
7095 | ||
7096 | (* compute the follow set for a set state from the follow sets *) | |
7097 | (* of its members *) | |
7098 | fun makeFollow NONE nil = nil | |
7099 | | makeFollow (SOME(s,a)) nil = [(makeState s,a)] | |
7100 | | makeFollow NONE ((q,a)::qas) = makeFollow (SOME(singleIntSet q,a)) qas | |
7101 | | makeFollow (SOME(s,a)) ((q,b)::qas) = | |
7102 | if a=b then makeFollow (SOME(addIntSet(q,s),a)) qas | |
7103 | else (makeState s,a)::makeFollow (SOME(singleIntSet q,b)) qas | |
7104 | ||
7105 | (* continue until all entries in the state dictionary are done -*) | |
7106 | fun doit i = | |
7107 | if i>=usedIndices tau then i | |
7108 | else let val sI = getKey(tau,i) | |
7109 | val lI = IntSet2List sI | |
7110 | val ffs = map (fn j => Vector.sub(tab,j)) lI | |
7111 | val (followJs,finI) = foldl | |
7112 | (fn ((flwJ,finJ),(flw,fin)) => (mergeFollow true (flwJ,flw), | |
7113 | finJ orelse fin)) | |
7114 | (nil,false) ffs | |
7115 | val followI = makeFollow NONE followJs | |
7116 | val _ = setByIndex(tau,i,(followI,finI)) | |
7117 | in doit (i+1) | |
7118 | end | |
7119 | ||
7120 | val size = doit 0 | |
7121 | in (* finally create a vector holding the new follow/fin pairs *) | |
7122 | Vector.tabulate (size,fn i => getByIndex(tau,i)) | |
7123 | end | |
7124 | ||
7125 | (*--------------------------------------------------------------------*) | |
7126 | (* given a vector of Follow and boolean final condition, make a dfa *) | |
7127 | (* out of it. if the first arg is true, then the content model was *) | |
7128 | (* ambiguous; in this case we must first apply a subset construction *) | |
7129 | (* in order to obtain a deterministic finite machine. *) | |
7130 | (*--------------------------------------------------------------------*) | |
7131 | fun passThree nondet tab = | |
7132 | let | |
7133 | val det = if nondet then makeDet tab else tab | |
7134 | in Vector.map makeRow det | |
7135 | end | |
7136 | end | |
7137 | (* stop of ../../Parser/Dfa/dfaPassThree.sml *) | |
7138 | (* start of ../../Parser/Dfa/dfaError.sml *) | |
7139 | ||
7140 | ||
7141 | (*--------------------------------------------------------------------------*) | |
7142 | (* Structure: DfaError *) | |
7143 | (* *) | |
7144 | (* Note: *) | |
7145 | (* The function in this structure is for producing good error messages *) | |
7146 | (* for ambiguous content models. It numbers the nodes of a cm exactly *) | |
7147 | (* like passOne does, but counts the occurrences of symbol a in order to *) | |
7148 | (* indicate which are in conflict. It is only executed in case of error. *) | |
7149 | (* *) | |
7150 | (* Depends on: *) | |
7151 | (* DfaData *) | |
7152 | (* *) | |
7153 | (* Exceptions raised by functions in this structure: *) | |
7154 | (* countOccs : none *) | |
7155 | (*--------------------------------------------------------------------------*) | |
7156 | signature DfaError = | |
7157 | sig | |
7158 | val countOccs : DfaBase.Sigma * DfaBase.State * DfaBase.State | |
7159 | -> DfaBase.ContentModel -> DfaBase.Sigma * int * int | |
7160 | end | |
7161 | ||
7162 | structure DfaError : DfaError = | |
7163 | struct | |
7164 | open DfaBase | |
7165 | ||
7166 | fun countOccs (a,q1,q2) cm = | |
7167 | let | |
7168 | val (q1,q2) = if q1>q2 then (q2,q1) else (q1,q2) | |
7169 | ||
7170 | fun next a nil = (1,[(a,2)]) | |
7171 | | next a ((b,n)::rest) = | |
7172 | if a=b then (n,(b,n+1)::rest) | |
7173 | else if a<b then (1,(a,2)::(b,n)::rest) | |
7174 | else let val (m,new) = next a rest | |
7175 | in (m,(b,n)::new) | |
7176 | end | |
7177 | ||
7178 | fun insert a (q,yet,n1,n2) = | |
7179 | let val (n,new) = next a yet | |
7180 | in (q+1,new,if q=q1 then n else n1,if q=q2 then n else n2) | |
7181 | end | |
7182 | ||
7183 | fun doit (cm,yet) = | |
7184 | case cm | |
7185 | of CM_ELEM a => insert a yet | |
7186 | | CM_OPT cmi => doit (cmi,yet) | |
7187 | | CM_REP cmi => doit (cmi,yet) | |
7188 | | CM_PLUS cmi => doit (cmi,yet) | |
7189 | | CM_ALT cmis => foldl doit yet cmis | |
7190 | | CM_SEQ cmis => foldl doit yet cmis | |
7191 | ||
7192 | val (_,_,n1,n2) = doit (cm,(1,nil,0,0)) | |
7193 | in | |
7194 | (a,n1,n2) | |
7195 | end | |
7196 | end | |
7197 | (* stop of ../../Parser/Dfa/dfaError.sml *) | |
7198 | (* start of ../../Parser/Dfa/dfaPassOne.sml *) | |
7199 | ||
7200 | ||
7201 | ||
7202 | (*--------------------------------------------------------------------------*) | |
7203 | (* Structure: DfaPassOne *) | |
7204 | (* *) | |
7205 | (* Depends on: *) | |
7206 | (* DfaData *) | |
7207 | (* DfaUtil *) | |
7208 | (* *) | |
7209 | (* Exceptions raised by functions in this structure: *) | |
7210 | (* passOne : ConflictFirst *) | |
7211 | (*--------------------------------------------------------------------------*) | |
7212 | signature DfaPassOne = | |
7213 | sig | |
7214 | val passOne : bool -> DfaBase.ContentModel -> DfaBase.CM | |
7215 | end | |
7216 | ||
7217 | structure DfaPassOne : DfaPassOne = | |
7218 | struct | |
7219 | open DfaBase DfaUtil | |
7220 | ||
7221 | (*--------------------------------------------------------------------*) | |
7222 | (* Given a content model, number the leafs, compute Empty and First *) | |
7223 | (* for each node, and construct a corresponding CM annotated with *) | |
7224 | (* these informations. *) | |
7225 | (* *) | |
7226 | (* Numbering: *) | |
7227 | (* The leafs are numbered in left-to-right, depth-first order, *) | |
7228 | (* starting with 1 (0 will be the start state of the DFA). *) | |
7229 | (* *) | |
7230 | (* Empty a = false *) | |
7231 | (* Empty e? = Empty e* = true *) | |
7232 | (* Empty e+ = Empty e *) | |
7233 | (* Empty e1|...|eN = Empty e1 \/ ... \/ Empty eN *) | |
7234 | (* Empty e1,...,eN = Empty e1 /\ ... /\ Empty eN *) | |
7235 | (* *) | |
7236 | (* First a = {q,a}, where q is the number of this leaf. *) | |
7237 | (* First e? = First e* = First e+ = First e *) | |
7238 | (* First e1|...|eN = First e1 ++ ... ++ First eN *) | |
7239 | (* First e1,...,eN = ++{First eI | Empty eJ=False forall j<i} *) | |
7240 | (* *) | |
7241 | (* F1++F2 = F1 U F2, if a2<>a1 forall (q1,a1) in F1, (q1,a1) in F1} *) | |
7242 | (* error, if exist (q1,a) in F1, (q2,a) in F2 *) | |
7243 | (* then raise ConflictFirst(a,q1,q2) *) | |
7244 | (*--------------------------------------------------------------------*) | |
7245 | fun passOne nondet cm = | |
7246 | let | |
7247 | fun und(a,b) = a andalso b | |
7248 | fun oder(a,b) = a orelse b | |
7249 | ||
7250 | fun op_fst_seq (fst,fsts,mt) = if mt then mergeFirst nondet (fst,fsts) else fst | |
7251 | fun op_fst_or (fst,fsts,_) = mergeFirst nondet (fst,fsts) | |
7252 | ||
7253 | fun do_cm cm q = | |
7254 | case cm | |
7255 | of CM_ELEM a => (ELEM a,(q+1,false,[(q+1,a)])) | |
7256 | | CM_OPT cm => let val cmi as (_,(q1,_,fst)) = do_cm cm q | |
7257 | in (OPT cmi,(q1,true,fst)) | |
7258 | end | |
7259 | | CM_REP cm => let val cmi as (_,(q1,_,fst)) = do_cm cm q | |
7260 | in (REP cmi,(q1,true,fst)) | |
7261 | end | |
7262 | | CM_PLUS cm => let val cmi as (_,info1) = do_cm cm q | |
7263 | in (PLUS cmi,info1) | |
7264 | end | |
7265 | | CM_ALT cms => do_cms (ALT,false,oder,op_fst_or) cms q | |
7266 | | CM_SEQ cms => do_cms (SEQ,true,und,op_fst_seq) cms q | |
7267 | ||
7268 | and do_cms(con,null_mt,op_mt,op_fst) cms q = | |
7269 | let | |
7270 | fun doit [] q = ([],(q,null_mt,[])) | |
7271 | | doit (cm::cms) q = | |
7272 | let | |
7273 | val cmi as (_,(q1,mt1,fst1)) = do_cm cm q | |
7274 | val (cmis,(q2,mt2,fst2)) = doit cms q1 | |
7275 | in (cmi::cmis,(q2,op_mt(mt1,mt2),op_fst(fst1,fst2,mt1))) | |
7276 | end | |
7277 | val (cmis,info1) = doit cms q | |
7278 | in (con cmis,info1) | |
7279 | end | |
7280 | ||
7281 | in do_cm cm 0 | |
7282 | end | |
7283 | end | |
7284 | (* stop of ../../Parser/Dfa/dfaPassOne.sml *) | |
7285 | (* start of ../../Parser/Dfa/dfaPassTwo.sml *) | |
7286 | ||
7287 | ||
7288 | ||
7289 | ||
7290 | ||
7291 | (*--------------------------------------------------------------------------*) | |
7292 | (* Structure: DfaPassTwo *) | |
7293 | (* *) | |
7294 | (* Depends on: *) | |
7295 | (* DfaData *) | |
7296 | (* DfaUtil *) | |
7297 | (* *) | |
7298 | (* Exceptions raised by functions in this structure: *) | |
7299 | (* passTwo : ConflictFollow *) | |
7300 | (*--------------------------------------------------------------------------*) | |
7301 | signature DfaPassTwo = | |
7302 | sig | |
7303 | val passTwo: bool -> DfaBase.CM -> (DfaBase.Follow * bool) vector | |
7304 | end | |
7305 | ||
7306 | structure DfaPassTwo : DfaPassTwo = | |
7307 | struct | |
7308 | open DfaBase DfaUtil | |
7309 | ||
7310 | (*--------------------------------------------------------------------*) | |
7311 | (* Given a CM annotated with leaf numbers (states), Empty and First, *) | |
7312 | (* compute Follow and Fin foreach node, and generate the transition *) | |
7313 | (* row if node is a leaf. Follow and Fin are computed top-down: *) | |
7314 | (* *) | |
7315 | (* (Top-Level): *) | |
7316 | (* Follow e = {}, Fin e = true *) | |
7317 | (* *) | |
7318 | (* (e=e1?): *) | |
7319 | (* Follow e1 = Follow e, Fin e1 = Fin e *) | |
7320 | (* *) | |
7321 | (* (e=e1*, e=e1+) *) | |
7322 | (* Follow e1 = Follow e1 ++ First e1, Fin e1 = Fin e *) | |
7323 | (* *) | |
7324 | (* (e=e1|...|eN) = *) | |
7325 | (* Follow eI = Follow e, Fin eI = Fin e for i=0...n *) | |
7326 | (* *) | |
7327 | (* (e=e1,...,eN) = *) | |
7328 | (* Follow eN = Follow e, Fin eN = Fin e *) | |
7329 | (* Follow eI = First eI+1, if Empty eI+1 = false, i<n *) | |
7330 | (* First eI+1 ++ Follow eI+1, if Empty eI+1 = true, i<n *) | |
7331 | (* Fin eI = false, if Empty eI+1 = false, i<n *) | |
7332 | (* Fin eI+1, if Empty eI+1 = true, i<n *) | |
7333 | (* *) | |
7334 | (* F1++F2 = F1 U F2, if a2<>a1 forall (q1,a1) in F1, (q1,a1) in F1} *) | |
7335 | (* error, if exist (q1,a) in F1, (q2,a) in F2 *) | |
7336 | (* then raise ConflictFirst(a,q1,q2) *) | |
7337 | (*--------------------------------------------------------------------*) | |
7338 | fun passTwo nondet (cmi as (_,(n,mt,fst))) = | |
7339 | let | |
7340 | val table = Array.array(n+1,(nil,false)) | |
7341 | ||
7342 | val _ = Array.update(table,0,(fst,mt)) | |
7343 | ||
7344 | fun do_cm (ff as (flw,fin)) (cm,(q,mt,fst)) = | |
7345 | case cm | |
7346 | of ELEM a => Array.update(table,q,ff) | |
7347 | | OPT cmi => do_cm ff cmi | |
7348 | | REP cmi => do_cm (mergeFollow nondet (fst,flw),fin) cmi | |
7349 | | PLUS cmi => do_cm (mergeFollow nondet (fst,flw),fin) cmi | |
7350 | | ALT cmis => app (do_cm ff) cmis | |
7351 | | SEQ cmis => ignore (do_seq ff cmis) | |
7352 | and do_seq ff cmis = foldr | |
7353 | (fn (cmi as (_,(_,mt,fst)),ff as (flw,fin)) | |
7354 | => (do_cm ff cmi; | |
7355 | if mt then (mergeFollow nondet (fst,flw),fin) else (fst,false))) | |
7356 | ff cmis | |
7357 | ||
7358 | val _ = do_cm (nil,true) cmi | |
7359 | ||
7360 | in Array.extract (table,0,NONE) | |
7361 | end | |
7362 | end | |
7363 | (* stop of ../../Parser/Dfa/dfaPassTwo.sml *) | |
7364 | (* start of ../../Parser/Dfa/dfa.sml *) | |
7365 | ||
7366 | ||
7367 | ||
7368 | ||
7369 | ||
7370 | ||
7371 | ||
7372 | ||
7373 | ||
7374 | ||
7375 | (*--------------------------------------------------------------------------*) | |
7376 | (* Structure: Dfa *) | |
7377 | (* *) | |
7378 | (* Depends on: *) | |
7379 | (* DfaData *) | |
7380 | (* DfaError *) | |
7381 | (* DfaPassOne *) | |
7382 | (* DfaPassTwo *) | |
7383 | (* DfaString *) | |
7384 | (* DfaUtil *) | |
7385 | (* *) | |
7386 | (* Exceptions raised by functions in this structure: *) | |
7387 | (* ContentModel2String : none *) | |
7388 | (* dfaFinal : none *) | |
7389 | (* dfaTrans : none *) | |
7390 | (* makeAmbiguous : DfaTooLarge *) | |
7391 | (* makeChoiceDfa : none *) | |
7392 | (* makeDfa : Ambiguous *) | |
7393 | (* Dfa2String : none *) | |
7394 | (*--------------------------------------------------------------------------*) | |
7395 | signature Dfa = | |
7396 | sig | |
7397 | eqtype DfaState | |
7398 | ||
7399 | val dfaError : DfaState | |
7400 | val dfaInitial : DfaState | |
7401 | ||
7402 | exception DfaTooLarge of int | |
7403 | exception Ambiguous of int * int * int | |
7404 | ||
7405 | val emptyDfa : DfaData.Dfa | |
7406 | ||
7407 | val makeDfa : DfaData.ContentModel -> DfaData.Dfa | |
7408 | val makeAmbiguous : DfaData.ContentModel -> DfaData.Dfa | |
7409 | val makeChoiceDfa : DfaData.ContentModel -> DfaData.Dfa | |
7410 | ||
7411 | val dfaFinal : DfaData.Dfa * DfaState -> bool | |
7412 | val dfaTrans : DfaData.Dfa * DfaState * int -> DfaState | |
7413 | end | |
7414 | ||
7415 | functor Dfa (structure DfaOptions : DfaOptions) : Dfa = | |
7416 | struct | |
7417 | structure DfaPassThree = DfaPassThree (structure DfaOptions = DfaOptions) | |
7418 | ||
7419 | open | |
7420 | DfaBase DfaError DfaPassOne DfaPassTwo DfaString DfaUtil | |
7421 | ||
7422 | type DfaState = State | |
7423 | ||
7424 | (*--------------------------------------------------------------------*) | |
7425 | (* Create a dfa for the content model (a1|...|aN)*, where a1,...,aN *) | |
7426 | (* are the symbols occurring in the input dfa. *) | |
7427 | (*--------------------------------------------------------------------*) | |
7428 | fun makeChoiceDfa cm = | |
7429 | let | |
7430 | val syms = cmSymbols cm | |
7431 | val flw = map (fn a => (dfaInitial,a)) syms | |
7432 | in | |
7433 | Vector.fromList [makeRow(flw,true)] | |
7434 | end | |
7435 | ||
7436 | (*--------------------------------------------------------------------*) | |
7437 | (* create a dfa for an ambiguous content model. Raise DfaTooLarge if *) | |
7438 | (* the subset construction yields too many states. *) | |
7439 | (*--------------------------------------------------------------------*) | |
7440 | fun makeAmbiguous cm = | |
7441 | let | |
7442 | val cmi = DfaPassOne.passOne true cm | |
7443 | val tab = DfaPassTwo.passTwo true cmi | |
7444 | val dfa = DfaPassThree.passThree true tab | |
7445 | in dfa | |
7446 | end | |
7447 | ||
7448 | (*--------------------------------------------------------------------*) | |
7449 | (* generate a dfa for a content model. Raise Ambiguous if the content *) | |
7450 | (* model is ambiguous. *) | |
7451 | (*--------------------------------------------------------------------*) | |
7452 | fun makeDfa cm = | |
7453 | let | |
7454 | val cmi = DfaPassOne.passOne false cm | |
7455 | val tab = DfaPassTwo.passTwo false cmi | |
7456 | val dfa = DfaPassThree.passThree false tab | |
7457 | in dfa | |
7458 | end | |
7459 | handle ConflictFirst aqq => raise Ambiguous (countOccs aqq cm) | |
7460 | | ConflictFollow aqq => raise Ambiguous (countOccs aqq cm) | |
7461 | ||
7462 | (*--------------------------------------------------------------------*) | |
7463 | (* make one transitions in the dfa. *) | |
7464 | (*--------------------------------------------------------------------*) | |
7465 | fun dfaTrans(tab,q,a) = | |
7466 | if q<0 then dfaDontCare | |
7467 | else let val (lo,hi,tab,_) = Vector.sub(tab,q) | |
7468 | in if a>=lo andalso a<=hi then Vector.sub(tab,a-lo) else dfaError | |
7469 | end | |
7470 | ||
7471 | (*--------------------------------------------------------------------*) | |
7472 | (* check whether a dfa's state is an accepting state. *) | |
7473 | (*--------------------------------------------------------------------*) | |
7474 | fun dfaFinal (tab,q) = | |
7475 | q<0 orelse #4(Vector.sub(tab,q):Row) | |
7476 | end | |
7477 | (* stop of ../../Parser/Dfa/dfa.sml *) | |
7478 | (* start of ../../Parser/entities.sml *) | |
7479 | (*--------------------------------------------------------------------------*) | |
7480 | (* Structure: Entities *) | |
7481 | (* *) | |
7482 | (* Exceptions raised by functions in this structure: *) | |
7483 | (* closeAll : none *) | |
7484 | (* getChar : none *) | |
7485 | (* getEntId : none *) | |
7486 | (* getPos : none *) | |
7487 | (* inInternalSubset : none *) | |
7488 | (* isOpenEntity : none *) | |
7489 | (* isSpecialEnd : none *) | |
7490 | (* Position2String : none *) | |
7491 | (* pushDummy : none *) | |
7492 | (* pushExtern : NoSuchFile *) | |
7493 | (* pushIntern : none *) | |
7494 | (* pushSpecial : NoSuchFile *) | |
7495 | (* statePos : none *) | |
7496 | (*--------------------------------------------------------------------------*) | |
7497 | (* This module maintains the entity stack. For each open entity it holds a *) | |
7498 | (* buffer to read characters from. When the buffer is exceeded, it gets re- *) | |
7499 | (* filled with new characters, depending on the entity's encoding. *) | |
7500 | (* *) | |
7501 | (* End-of-line handling as specified in 2.11 is performed: *) | |
7502 | (* *) | |
7503 | (* ... To simplify the tasks of applications, wherever an external parsed *) | |
7504 | (* entity or the literal entity value of an internal parsed entity *) | |
7505 | (* contains either the literal two-character sequence "#xD#xA" or a *) | |
7506 | (* standalone literal #xD, an XML processor must pass to the application *) | |
7507 | (* the single character #xA. *) | |
7508 | (* (This behavior can conveniently be produced by normalizing all line *) | |
7509 | (* breaks to #xA on input, before parsing.) *) | |
7510 | (* *) | |
7511 | (* It also checks for illegal characters, cf. 2.2: *) | |
7512 | (* *) | |
7513 | (* [2] Char ::= #x9 | #xA | #xD /* any Unicode character, *) | |
7514 | (* | [#x20-#xD7FF] excluding the surrogate *) | |
7515 | (* | [#xE000-#xFFFD] blocks, FFFE, and FFFF. */ *) | |
7516 | (* | [#x10000-#x10FFFF] *) | |
7517 | (* *) | |
7518 | (* More precisely, it assumes that all decoded characters are valid Unicode *) | |
7519 | (* characters. It thus only checks for control characters other than #x9, *) | |
7520 | (* #xA or #xD. *) | |
7521 | (*--------------------------------------------------------------------------*) | |
7522 | signature Entities = | |
7523 | sig | |
7524 | include Hooks | |
7525 | ||
7526 | type State | |
7527 | eqtype EntId | |
7528 | datatype Special = DOC_ENTITY | EXT_SUBSET | |
7529 | ||
7530 | exception CantOpenFile of (string * string) * AppData | |
7531 | ||
7532 | val pushIntern : State * int * bool * UniChar.Vector -> State | |
7533 | val pushExtern : State * int * bool * Uri.Uri -> State * Encoding.Encoding | |
7534 | val pushSpecial : Special * Uri.Uri option -> State * Encoding.Encoding | |
7535 | ||
7536 | val closeAll : State -> unit | |
7537 | ||
7538 | val commitAuto : AppData * State -> AppData * State | |
7539 | val changeAuto : AppData * State * string -> AppData * State * Encoding.Encoding | |
7540 | ||
7541 | val getEntId : State -> EntId | |
7542 | val getPos : State -> Errors.Position | |
7543 | val getUri : State -> Uri.Uri | |
7544 | ||
7545 | val getChar : AppData * State -> UniChar.Char * AppData * State | |
7546 | val ungetChars : State * UniChar.Data -> State | |
7547 | ||
7548 | val isOpen : int * bool * State -> bool | |
7549 | val isSpecial : State -> bool | |
7550 | val inDocEntity : State -> bool | |
7551 | end | |
7552 | ||
7553 | functor Entities (structure Hooks : Hooks) : Entities = | |
7554 | struct | |
7555 | open | |
7556 | UniChar Decode Decode.Error Errors Hooks Uri UtilError | |
7557 | ||
7558 | val THIS_MODULE = "Entities" | |
7559 | val BUFSIZE = 1024 | |
7560 | type CharBuffer = UniChar.Char array | |
7561 | ||
7562 | (*--------------------------------------------------------------------*) | |
7563 | (* A special entity can not be popped from the stack by getChar, so *) | |
7564 | (* it must be popped explicitly. This is for the document entity and *) | |
7565 | (* the external subset. *) | |
7566 | (*--------------------------------------------------------------------*) | |
7567 | datatype Special = DOC_ENTITY | EXT_SUBSET | |
7568 | (*--------------------------------------------------------------------*) | |
7569 | (* In order to distinguish a general entity from a paramter entity, *) | |
7570 | (* entity idxs are marked with this datatype. *) | |
7571 | (*--------------------------------------------------------------------*) | |
7572 | datatype EntId = GENERAL of int | PARAMETER of int | |
7573 | ||
7574 | (*--------------------------------------------------------------------*) | |
7575 | (* Make an EntId from the entity's index. *) | |
7576 | (*--------------------------------------------------------------------*) | |
7577 | fun makeEntId(idx,isParam) = | |
7578 | if isParam then PARAMETER idx else GENERAL idx | |
7579 | ||
7580 | (*--------------------------------------------------------------------*) | |
7581 | (* A non-empty stack is: *) | |
7582 | (* *) | |
7583 | (* an internal entity INT(buf,size,idx,(id,other)): *) | |
7584 | (* - (vec,idx,size) is a buffer,current index and its size; *) | |
7585 | (* - id is the index of the entity's name in the entity table. *) | |
7586 | (* - other contains the underlying entities (the rest of the stack). *) | |
7587 | (* The components are nested according to access frequency. *) | |
7588 | (* *) | |
7589 | (* an external entity has three forms: *) | |
7590 | (* EXT2(buf,size,idx,line,col,break,(dec,err,typ)) *) | |
7591 | (* - (buf,size,idx) is a buffer, its size and current index; *) | |
7592 | (* - (line,col) are the line and column; *) | |
7593 | (* - break is a boolean indicating whether the last character was a *) | |
7594 | (* carriage return (0xD) (then a succeeding line feed (0xA) must be *) | |
7595 | (* supressed); *) | |
7596 | (* - err is an option: if it is SOME(f,ee,err) then it indicates that *) | |
7597 | (* the array was finished by a decoding error err, with the basic *) | |
7598 | (* file f; f was at end of file if ee is true. Otherwise there was *) | |
7599 | (* no error when loading the array. *) | |
7600 | (* - dec describies the encoding of the entity and thus, how more *) | |
7601 | (* data can be loaded; *) | |
7602 | (* - typ is either of the form SPECIAL spec indicating a special *) | |
7603 | (* entity; then this is the only entity on the stack. Otherwise it *) | |
7604 | (* is NORMAL(id,other) for a normal external entity, with: *) | |
7605 | (* + id is the index of the entity's name in the DTD; *) | |
7606 | (* + other is the underlying stack. *) | |
7607 | (* The components are nested according to access frequency. *) | |
7608 | (* *) | |
7609 | (* The second form of an external entity is *) | |
7610 | (* EXT1(dec,line,col,break,typ). This is an unbuffered *) | |
7611 | (* entity whose encoding declaration is being read. We may not load *) | |
7612 | (* an array of characters as a whole because the encoding might still *) | |
7613 | (* change. The components have the same meaning as for EXT2. *) | |
7614 | (* *) | |
7615 | (* A closed entity remains on the stack until the next getChar, for *) | |
7616 | (* purposes of error printing. A closed external entity has the form *) | |
7617 | (* CLOSED(dec,l,col,typ); components have the same meaning *) | |
7618 | (* as for open external entities. A closed internal entity has the *) | |
7619 | (* form ENDED(id,other) with components as above. *) | |
7620 | (* *) | |
7621 | (* Sometimes (for parsing xml/decl declarations) we need a lookahead. *) | |
7622 | (* LOOKING(cs,q) is a state remembering all chars cs looked ahead up *) | |
7623 | (* to state q, in reverse order. LOOKED(cs,q) is an undone lookahead, *) | |
7624 | (* the looked-ahead chars now in the right order. *) | |
7625 | (*--------------------------------------------------------------------*) | |
7626 | datatype ExtType = SPECIAL of Special | NORMAL of EntId * State | |
7627 | and State = | |
7628 | LOOKED of Data * State | |
7629 | | ENDED of EntId * State | |
7630 | | CLOSED of DecFile * int * int * ExtType | |
7631 | | INT of Vector * int * int * (EntId * State) | |
7632 | | EXT1 of DecFile * int * int * bool * ExtType | |
7633 | | EXT2 of CharBuffer * int * int * int * int * bool | |
7634 | * (DecFile * DecodeError option * ExtType) | |
7635 | ||
7636 | exception CantOpenFile of (string * string) * AppData | |
7637 | ||
7638 | (*--------------------------------------------------------------------*) | |
7639 | (* Extract the unique number from a state. *) | |
7640 | (*--------------------------------------------------------------------*) | |
7641 | fun getExtEntId extType = | |
7642 | case extType | |
7643 | of SPECIAL DOC_ENTITY => GENERAL 0 | |
7644 | | SPECIAL EXT_SUBSET => PARAMETER 0 | |
7645 | | NORMAL(id,_) => id | |
7646 | fun getEntId q = | |
7647 | case q | |
7648 | of LOOKED (_,q) => getEntId q | |
7649 | | ENDED(id,_) => id | |
7650 | | CLOSED(_,_,_,extType) => getExtEntId extType | |
7651 | | INT(_,_,_,(id,_)) => id | |
7652 | | EXT1(_,_,_,_,extType) => getExtEntId extType | |
7653 | | EXT2(_,_,_,_,_,_,(_,_,extType)) => getExtEntId extType | |
7654 | ||
7655 | (*--------------------------------------------------------------------*) | |
7656 | (* Find the nearest enclosing external entity, and return its *) | |
7657 | (* filename, line and column number. *) | |
7658 | (*--------------------------------------------------------------------*) | |
7659 | fun getPos q = | |
7660 | case q | |
7661 | of ENDED(_,other) => getPos other | |
7662 | | INT(_,_,_,(_,other)) => getPos other | |
7663 | | CLOSED(dec,l,col,_) => (decName dec,l,col) | |
7664 | | EXT1(dec,l,col,_,_) => (decName dec,l,col) | |
7665 | | EXT2(_,_,_,l,col,_,(dec,_,_)) => (decName dec,l,col) | |
7666 | | LOOKED (cs,q) => let val (f,l,c) = getPos q | |
7667 | val k = length cs | |
7668 | in if c>=k then (f,l,c-k) else (f,l,0) | |
7669 | end | |
7670 | ||
7671 | (*--------------------------------------------------------------------*) | |
7672 | (* get the path of the nearest enclosing external entity. *) | |
7673 | (*--------------------------------------------------------------------*) | |
7674 | fun getUri q = | |
7675 | case q | |
7676 | of LOOKED (_,q) => getUri q | |
7677 | | ENDED(_,other) => getUri other | |
7678 | | INT(_,_,_,(_,other)) => getUri other | |
7679 | | CLOSED(dec,l,col,_) => decUri dec | |
7680 | | EXT1(dec,l,col,_,_) => decUri dec | |
7681 | | EXT2(_,_,_,l,col,_,(dec,_,_)) => decUri dec | |
7682 | ||
7683 | (*--------------------------------------------------------------------*) | |
7684 | (* close all files, return nothing. *) | |
7685 | (*--------------------------------------------------------------------*) | |
7686 | fun closeAll q = | |
7687 | case q | |
7688 | of LOOKED(_,other) => closeAll other | |
7689 | | ENDED(_,other) => closeAll other | |
7690 | | CLOSED(_,_,_,SPECIAL _) => () | |
7691 | | CLOSED(_,_,_,NORMAL(_,other)) => closeAll other | |
7692 | | INT(_,_,_,(_,other)) => closeAll other | |
7693 | | EXT1(dec,_,_,_,SPECIAL _) => ignore(decClose dec) | |
7694 | | EXT1(dec,_,_,_,NORMAL(_,other)) => (decClose dec; closeAll other) | |
7695 | | EXT2(_,_,_,_,_,_,(dec,_,SPECIAL _)) => ignore(decClose dec) | |
7696 | | EXT2(_,_,_,_,_,_,(dec,_,NORMAL(_,other))) => (decClose dec; closeAll other) | |
7697 | ||
7698 | (*--------------------------------------------------------------------*) | |
7699 | (* is this entity already on the stack? *) | |
7700 | (*--------------------------------------------------------------------*) | |
7701 | fun isOpen (idx,isParam,q) = | |
7702 | let val id = makeEntId(idx,isParam) | |
7703 | fun doit q = | |
7704 | case q | |
7705 | of LOOKED (_,other) => doit other | |
7706 | | ENDED(id',other) => id=id' orelse doit other | |
7707 | | CLOSED(_,_,_,SPECIAL _) => false | |
7708 | | CLOSED(_,_,_,NORMAL(id',other)) => id=id' orelse doit other | |
7709 | | INT(_,_,_,(id',other)) => id=id' orelse doit other | |
7710 | | EXT1(_,_,_,_,SPECIAL _) => false | |
7711 | | EXT1(_,_,_,_,NORMAL(id',other)) => id=id' orelse doit other | |
7712 | | EXT2(_,_,_,_,_,_,(_,_,SPECIAL _)) => false | |
7713 | | EXT2(_,_,_,_,_,_,(_,_,NORMAL(id',other))) => id=id' orelse doit other | |
7714 | in doit q | |
7715 | end | |
7716 | ||
7717 | (*--------------------------------------------------------------------*) | |
7718 | (* are we in the internal subset, i.e., in the document entity? *) | |
7719 | (* The internal subset can only be in the document entity, since no *) | |
7720 | (* parameter entities are declared prior to it. The document entity *) | |
7721 | (* is then the only entity on the stack. *) | |
7722 | (*--------------------------------------------------------------------*) | |
7723 | fun inDocEntity q = | |
7724 | case q | |
7725 | of LOOKED (_,q) => inDocEntity q | |
7726 | | ENDED(_,other) => inDocEntity other | |
7727 | | INT(_,_,_,(_,other)) => inDocEntity other | |
7728 | | CLOSED(_,_,_,NORMAL _) => false | |
7729 | | CLOSED(_,_,_,SPECIAL what) => what=DOC_ENTITY | |
7730 | | EXT1(_,_,_,_,NORMAL _) => false | |
7731 | | EXT1(_,_,_,_,SPECIAL what) => what=DOC_ENTITY | |
7732 | | EXT2(_,_,_,_,_,_,(_,_,NORMAL _)) => false | |
7733 | | EXT2(_,_,_,_,_,_,(_,_,SPECIAL what)) => what=DOC_ENTITY | |
7734 | ||
7735 | (*--------------------------------------------------------------------*) | |
7736 | (* is this state the document end, i.e., are all entities closed? *) | |
7737 | (*--------------------------------------------------------------------*) | |
7738 | fun isSpecial q = | |
7739 | case q | |
7740 | of LOOKED (_,q) => isSpecial q | |
7741 | | CLOSED(_,_,_,SPECIAL _) => true | |
7742 | | EXT1(_,_,_,_,SPECIAL _) => true | |
7743 | | EXT2(_,_,_,_,_,_,(_,_,SPECIAL _)) => true | |
7744 | | _ => false | |
7745 | ||
7746 | (*--------------------------------------------------------------------*) | |
7747 | (* Initialize and load a new buffer when opening an external entity. *) | |
7748 | (*--------------------------------------------------------------------*) | |
7749 | fun initArray dec = | |
7750 | let | |
7751 | val arr = Array.array(BUFSIZE,0wx0) | |
7752 | val (n,dec1,err) = decGetArray dec arr | |
7753 | in (arr,n,dec1,err) | |
7754 | end | |
7755 | ||
7756 | (*--------------------------------------------------------------------*) | |
7757 | (* Open an external/internal entity. *) | |
7758 | (*--------------------------------------------------------------------*) | |
7759 | fun pushIntern(q,id,isParam,vec) = | |
7760 | INT(vec,Vector.length vec,0,(makeEntId(id,isParam),q)) | |
7761 | fun pushExtern(q,id,isParam,uri) = | |
7762 | let | |
7763 | val dec = decOpenXml (SOME uri) | |
7764 | val auto = decEncoding dec | |
7765 | val q1 = EXT1(dec,1,0,false,NORMAL(makeEntId(id,isParam),q)) | |
7766 | in (q1,auto) | |
7767 | end | |
7768 | fun pushSpecial(what,uri) = | |
7769 | let | |
7770 | val dec = decOpenXml uri | |
7771 | val auto = decEncoding dec | |
7772 | val q = EXT1(dec,1,0,false,SPECIAL what) | |
7773 | in (q,auto) | |
7774 | end | |
7775 | ||
7776 | (*--------------------------------------------------------------------*) | |
7777 | (* confirm the autodetected encoding of an external entity. *) | |
7778 | (*--------------------------------------------------------------------*) | |
7779 | fun commitAuto(a,q) = | |
7780 | case q | |
7781 | of EXT1(dec,l,col,brk,typ) => | |
7782 | let | |
7783 | val a1 = a before decCommit dec | |
7784 | handle DecError(_,_,err) | |
7785 | => hookError(a,(getPos q,ERR_DECODE_ERROR err)) | |
7786 | val (arr,n,dec1,err) = initArray dec | |
7787 | in (a1,EXT2(arr,n,0,l,col,brk,(dec1,err,typ))) | |
7788 | end | |
7789 | (* | |
7790 | in (a1,EXT1(dec,l,col,brk,typ)) | |
7791 | end | |
7792 | *) | |
7793 | | LOOKED(cs,q1) => let val (a1,q2) = commitAuto (a,q1) | |
7794 | in (a1,LOOKED(cs,q2)) | |
7795 | end | |
7796 | | CLOSED _ => (a,q) | |
7797 | | _ => raise InternalError(THIS_MODULE,"commitAuto", | |
7798 | "entity is neither EXT1 nor CLOSED nor LOOKED") | |
7799 | ||
7800 | (*--------------------------------------------------------------------*) | |
7801 | (* change from the autodetected encoding to the declared one. *) | |
7802 | (*--------------------------------------------------------------------*) | |
7803 | fun changeAuto (a,q,decl) = | |
7804 | case q | |
7805 | of EXT1(dec,l,col,brk,typ) => | |
7806 | let | |
7807 | val dec1 = decSwitch(dec,decl) | |
7808 | handle DecError(dec,_,err) | |
7809 | => let val a1 = hookError(a,(getPos q,ERR_DECODE_ERROR err)) | |
7810 | val _ = decClose dec | |
7811 | val uri = decName dec | |
7812 | val msg = case err | |
7813 | of ERR_UNSUPPORTED_ENC _ => "Unsupported encoding" | |
7814 | | _ => "Declared encoding incompatible" | |
7815 | ^"with auto-detected encoding" | |
7816 | in raise CantOpenFile ((uri,msg),a1) | |
7817 | end | |
7818 | val newEnc = decEncoding dec1 | |
7819 | val (arr,n,dec2,err) = initArray dec1 | |
7820 | in (a,EXT2(arr,n,0,l,col,brk,(dec2,err,typ)),newEnc) | |
7821 | end | |
7822 | (* | |
7823 | in (a,EXT1(dec1,l,col,brk,typ),newEnc) | |
7824 | end | |
7825 | *) | |
7826 | ||
7827 | | LOOKED(cs,q1) => let val (a2,q2,enc2) = changeAuto(a,q1,decl) | |
7828 | in (a2,LOOKED(cs,q2),enc2) | |
7829 | end | |
7830 | | CLOSED(dec,_,_,_) => (a,q,decEncoding dec) | |
7831 | | _ => raise InternalError(THIS_MODULE,"changeAuto", | |
7832 | "entity is neither EXT1 nor CLOSED nor LOOKED") | |
7833 | ||
7834 | (*--------------------------------------------------------------------*) | |
7835 | (* Get one character from the current entity. Possibly reload buffer. *) | |
7836 | (* Return 0wx0 at entity end. Otherwise check whether the character *) | |
7837 | (* is valid (cf. 2.2). If the last character was a carriage return *) | |
7838 | (* (0xD) supress a line feed (0xA). *) | |
7839 | (*--------------------------------------------------------------------*) | |
7840 | fun getChar (a,q) = | |
7841 | case q | |
7842 | of ENDED(_,other) => getChar(a,other) | |
7843 | | CLOSED(_,_,_,typ) => | |
7844 | (case typ | |
7845 | of SPECIAL _ => raise InternalError (THIS_MODULE,"getChar", | |
7846 | "attempt to read beyond special entity end") | |
7847 | | NORMAL(_,other) => getChar(a,other)) | |
7848 | | INT(vec,s,i,io) => | |
7849 | if i>=s then (0wx0,a,ENDED io) | |
7850 | else (Vector.sub(vec,i),a,INT(vec,s,i+1,io)) | |
7851 | | EXT1(dec,l,col,br,typ) => | |
7852 | (let | |
7853 | val (c,dec1) = decGetChar dec | |
7854 | in | |
7855 | if (* c>=0wx20 orelse c=0wx09 *) | |
7856 | c>=0wx0020 | |
7857 | andalso (c<=0wxD7FF | |
7858 | orelse c>=0wxE000 andalso (c<=0wxFFFD | |
7859 | orelse c>=0wx10000)) | |
7860 | orelse c=0wx9 | |
7861 | then (c,a,EXT1(dec1,l,col+1,false,typ)) | |
7862 | else if c=0wxA | |
7863 | then if br then getChar(a,EXT1(dec1,l,col,false,typ)) | |
7864 | else (c,a,EXT1(dec1,l+1,0,false,typ)) | |
7865 | else (if c=0wxD then (0wxA,a,EXT1(dec1,l+1,0,true,typ)) | |
7866 | else let val a1 = hookError(a,(getPos q,ERR_NON_XML_CHAR c)) | |
7867 | in getChar(a1,EXT1(dec1,l,col+1,false,typ)) | |
7868 | end) | |
7869 | end | |
7870 | handle DecEof dec => (0wx0,a,CLOSED(dec,l,col,typ)) | |
7871 | | DecError(dec,eof,err) => | |
7872 | let val err = ERR_DECODE_ERROR err | |
7873 | val a1 = hookError(a,(getPos q,err)) | |
7874 | in if eof then (0wx0,a,CLOSED(dec,l,col,typ)) | |
7875 | else getChar(a1,EXT1(dec,col,l,br,typ)) | |
7876 | end) | |
7877 | | EXT2(arr,s,i,l,col,br,det) => | |
7878 | if i<s | |
7879 | then let val c = Array.sub(arr,i) | |
7880 | in if (* c>=0wx20 orelse c=0wx09 *) | |
7881 | (* c>=0wx0020 andalso c<=0wxD7FF orelse c=0wx9 orelse *) | |
7882 | (* c>=0wxE000 andalso c<=0wxFFFD orelse c>=0wx10000 *) | |
7883 | c>=0wx0020 | |
7884 | andalso (c<=0wxD7FF | |
7885 | orelse c>=0wxE000 andalso (c<=0wxFFFD | |
7886 | orelse c>=0wx10000)) | |
7887 | orelse c=0wx9 | |
7888 | then (c,a,EXT2(arr,s,i+1,l,col+1,false,det)) | |
7889 | else if c=0wxA | |
7890 | then if br then getChar(a,EXT2(arr,s,i+1,l,col,false,det)) | |
7891 | else (c,a,EXT2(arr,s,i+1,l+1,0,false,det)) | |
7892 | else (if c=0wxD then (0wxA,a,EXT2(arr,s,i+1,l+1,0,true,det)) | |
7893 | else let val a1 = hookError(a,(getPos q,ERR_NON_XML_CHAR c)) | |
7894 | in getChar(a1,EXT2(arr,s,i+1,l,col+1,false,det)) | |
7895 | end) | |
7896 | end | |
7897 | else let val (dec,err,typ) = det | |
7898 | val (a1,(n,dec1,err1)) = | |
7899 | case err | |
7900 | of NONE => if s=BUFSIZE then (a,decGetArray dec arr) | |
7901 | else (a,(0,dec,NONE)) | |
7902 | | SOME err => (hookError(a,(getPos q,ERR_DECODE_ERROR err)), | |
7903 | decGetArray dec arr) | |
7904 | in if n=0 andalso not (isSome err1) | |
7905 | then (0wx0,a1,CLOSED(dec1,l,col,typ)) | |
7906 | else getChar(a1,EXT2(arr,n,0,l,col,br,(dec1,err1,typ))) | |
7907 | end | |
7908 | | LOOKED(nil,q) => getChar(a,q) | |
7909 | | LOOKED(c::cs,q) => (c,a,LOOKED(cs,q)) | |
7910 | ||
7911 | (*--------------------------------------------------------------------*) | |
7912 | (* unget a list of characters. *) | |
7913 | (*--------------------------------------------------------------------*) | |
7914 | fun ungetChars (q,cs) = LOOKED(cs,q) | |
7915 | end | |
7916 | (* stop of ../../Parser/entities.sml *) | |
7917 | (* start of ../../Parser/Dtd/dtdDeclare.sml *) | |
7918 | (*--------------------------------------------------------------------------*) | |
7919 | (* Structure: DtdDeclare *) | |
7920 | (* *) | |
7921 | (*--------------------------------------------------------------------------*) | |
7922 | (* Functor: DtdDeclare *) | |
7923 | (*--------------------------------------------------------------------------*) | |
7924 | (* This module provides functions for adding declarations to the DTD tables *) | |
7925 | (* and for doing checks on components of declarations. *) | |
7926 | (*--------------------------------------------------------------------------*) | |
7927 | functor DtdDeclare (structure Dtd : Dtd | |
7928 | structure Entities : Entities | |
7929 | structure ParserOptions : ParserOptions) = | |
7930 | struct | |
7931 | open | |
7932 | UtilInt UtilList | |
7933 | Base Dtd Errors Entities ParserOptions UniChar UniClasses | |
7934 | ||
7935 | (*--------------------------------------------------------------------*) | |
7936 | (* check whether a sequence a chars is the b-adic representation of a *) | |
7937 | (* character's code, terminated by ";". base will be 10 or 16, isBase *) | |
7938 | (* will check for a character being a decimal/hexadecimal number. *) | |
7939 | (*--------------------------------------------------------------------*) | |
7940 | fun checkBasimal (base,baseValue) (ch:Char,cs) = | |
7941 | let fun doit _ (nil:Data) = false | |
7942 | | doit yet [0wx3B] = yet=ch | |
7943 | | doit yet (c::cs) = case baseValue c | |
7944 | of NONE => false | |
7945 | | SOME v => doit (base*yet+v) cs | |
7946 | in doit 0w0 cs | |
7947 | end | |
7948 | val checkDecimal = checkBasimal (0w10,decValue) | |
7949 | val checkHeximal = checkBasimal (0wx10,hexValue) | |
7950 | ||
7951 | (*--------------------------------------------------------------------*) | |
7952 | (* check a character reference for identifying a character. *) | |
7953 | (*--------------------------------------------------------------------*) | |
7954 | fun checkRef (ch,0wx26::0wx23::0wx78::cs) (* "&#x..." *) = checkHeximal(ch,cs) | |
7955 | | checkRef (ch,0wx26::0wx23::cs) (* "&#..." *) = checkDecimal(ch,cs) | |
7956 | | checkRef _ = false | |
7957 | ||
7958 | (*--------------------------------------------------------------------*) | |
7959 | (* check for a single character ch. *) | |
7960 | (*--------------------------------------------------------------------*) | |
7961 | fun checkSingle (ch,[c]) = c=ch | |
7962 | | checkSingle _ = false | |
7963 | ||
7964 | (*--------------------------------------------------------------------*) | |
7965 | (* check a predefined entity for being well defined. Note that both *) | |
7966 | (* a single char and a char ref representation are allowed, except *) | |
7967 | (* for 'amp' which must be escaped. *) | |
7968 | (*--------------------------------------------------------------------*) | |
7969 | fun checkPredef (idx,cs) = | |
7970 | case idx | |
7971 | of 1 => checkRef(0wx26,cs) | |
7972 | | 2 => checkSingle(0wx3C,cs) orelse checkRef(0wx3C,cs) | |
7973 | | 3 => checkSingle(0wx3E,cs) orelse checkRef(0wx3E,cs) | |
7974 | | 4 => checkSingle(0wx27,cs) orelse checkRef(0wx27,cs) | |
7975 | | 5 => checkSingle(0wx22,cs) orelse checkRef(0wx22,cs) | |
7976 | | _ => true | |
7977 | ||
7978 | (*--------------------------------------------------------------------*) | |
7979 | (* Given the declaration of an entity check whether it is predefined. *) | |
7980 | (* If no return false. If yes, check whether is was already declared *) | |
7981 | (* and whether it is correctly declared. See 4.6: *) | |
7982 | (* *) | |
7983 | (* All XML processors must recognize these entities whether they *) | |
7984 | (* are declared or not. For interoperability, valid XML documents *) | |
7985 | (* should declare these entities, like any others, before using *) | |
7986 | (* them. If the entities in question are declared, they must be *) | |
7987 | (* declared as internal entities whose replacement text is the *) | |
7988 | (* single character being escaped or a character reference to that *) | |
7989 | (* character, as shown below. *) | |
7990 | (* *) | |
7991 | (* <!ENTITY lt "&#60;"> *) | |
7992 | (* <!ENTITY gt ">"> *) | |
7993 | (* <!ENTITY amp "&#38;"> *) | |
7994 | (* <!ENTITY apos "'"> *) | |
7995 | (* <!ENTITY quot """> *) | |
7996 | (* *) | |
7997 | (* Note that the < and & characters in the declarations of "lt" and *) | |
7998 | (* "amp" are doubly escaped to meet the requirement that entity *) | |
7999 | (* replacement be well-formed. *) | |
8000 | (* *) | |
8001 | (* print an error if the entity was already declared. *) | |
8002 | (* print an error if the declaration is not correct. *) | |
8003 | (*--------------------------------------------------------------------*) | |
8004 | fun checkPredefined dtd (a,q) (idx,ent) = | |
8005 | if !O_VALIDATE andalso idx>=1 andalso idx<=5 then | |
8006 | let | |
8007 | val a1 = if !O_WARN_MULT_ENT_DECL andalso isRedefined dtd idx | |
8008 | then let val warn = WARN_MULT_DECL(IT_GEN_ENT,Index2GenEnt dtd idx) | |
8009 | in hookWarning(a,(getPos q,warn)) | |
8010 | end | |
8011 | else a before setRedefined dtd idx | |
8012 | val a2 = | |
8013 | if !O_CHECK_PREDEFINED then | |
8014 | let val correct = | |
8015 | case ent | |
8016 | of GE_INTERN(_,rep) => checkPredef (idx,Vector2Data rep) | |
8017 | | _ => false | |
8018 | in if correct then a1 | |
8019 | else let val err = ERR_DECL_PREDEF(Index2GenEnt dtd idx,validPredef idx) | |
8020 | in hookError(a1,(getPos q,err)) | |
8021 | end | |
8022 | end | |
8023 | else a1 | |
8024 | in (true,a2) | |
8025 | end | |
8026 | else (false,a) | |
8027 | ||
8028 | (*--------------------------------------------------------------------*) | |
8029 | (* add an entity declaration to the DTD tables. 4.2 *) | |
8030 | (* *) | |
8031 | (* ... If the same entity is declared more than once, the first *) | |
8032 | (* declaration encountered is binding; at user option, an XML *) | |
8033 | (* processor may issue a warning if entities are declared multiple *) | |
8034 | (* times. *) | |
8035 | (* *) | |
8036 | (* For general entities, check whether it is a predefined entity and *) | |
8037 | (* if so, whether it is declared correctly. *) | |
8038 | (*--------------------------------------------------------------------*) | |
8039 | (* print a warning and ignore the declaration if the notation was *) | |
8040 | (* declared previously. *) | |
8041 | (*--------------------------------------------------------------------*) | |
8042 | fun addGenEnt dtd (a,q) (idx,ent,ext) = | |
8043 | case getGenEnt dtd idx | |
8044 | of (GE_NULL,_) => a before setGenEnt dtd (idx,(ent,ext)) | |
8045 | | _ => let val (pre,a1) = checkPredefined dtd (a,q) (idx,ent) | |
8046 | in if pre orelse not (!O_WARN_MULT_ENT_DECL) then a1 | |
8047 | else hookWarning(a1,(getPos q,WARN_MULT_DECL | |
8048 | (IT_GEN_ENT,Index2GenEnt dtd idx))) | |
8049 | end | |
8050 | ||
8051 | fun addParEnt dtd (a,q) (idx,ent,ext) = | |
8052 | case getParEnt dtd idx | |
8053 | of (PE_NULL,_) => a before setParEnt dtd (idx,(ent,ext)) | |
8054 | | _ => if !O_WARN_MULT_ENT_DECL | |
8055 | then hookWarning(a,(getPos q,WARN_MULT_DECL | |
8056 | (IT_PAR_ENT,Index2ParEnt dtd idx))) | |
8057 | else a | |
8058 | ||
8059 | (*--------------------------------------------------------------------*) | |
8060 | (* at option print a warning if not all predefined entities have been *) | |
8061 | (* declared. Cf. 4.1: *) | |
8062 | (* *) | |
8063 | (* For interoperability, valid documents should declare the *) | |
8064 | (* entities amp, lt, gt, apos, quot, in the form specified in *) | |
8065 | (* "4.6 Predefined Entities". *) | |
8066 | (*--------------------------------------------------------------------*) | |
8067 | fun checkPreDefined dtd (a,q) = | |
8068 | if !O_VALIDATE andalso !O_INTEROPERABILITY andalso | |
8069 | !O_WARN_SHOULD_DECLARE andalso hasDtd dtd | |
8070 | then case notRedefined dtd | |
8071 | of nil => a | |
8072 | | ents => hookWarning(a,(getPos q,WARN_SHOULD_DECLARE ents)) | |
8073 | else a | |
8074 | ||
8075 | (*--------------------------------------------------------------------*) | |
8076 | (* add a notation declaration to the DTD tables. *) | |
8077 | (* *) | |
8078 | (* though the rec. says nothing about repeated notation declarations, *) | |
8079 | (* I assume that the intention is to treat them like entities, i.e. *) | |
8080 | (* ignore repeated declarations with an optional warning. *) | |
8081 | (* *) | |
8082 | (* print a warning and ignore the declaration if the notation was *) | |
8083 | (* declared previously. *) | |
8084 | (*--------------------------------------------------------------------*) | |
8085 | fun addNotation dtd (a,q) (idx,nt) = | |
8086 | if hasNotation dtd idx | |
8087 | then if !O_WARN_MULT_NOT_DECL | |
8088 | then hookWarning(a,(getPos q,WARN_MULT_DECL | |
8089 | (IT_NOTATION,Index2AttNot dtd idx))) | |
8090 | else a | |
8091 | else a before setNotation dtd (idx,nt) | |
8092 | ||
8093 | (*--------------------------------------------------------------------*) | |
8094 | (* add an element declaration to the element table. Only the content *) | |
8095 | (* part of the element info is updated. 3.2: *) | |
8096 | (* *) | |
8097 | (* Validity Constraint: Unique Element Type Declaration *) | |
8098 | (* No element type may be declared more than once. *) | |
8099 | (* *) | |
8100 | (* print an error and ignore the declaration if the element was *) | |
8101 | (* declared previously. *) | |
8102 | (*--------------------------------------------------------------------*) | |
8103 | fun addElement dtd (a,q) (idx,cont,ext) = | |
8104 | let val {decl,atts,errAtts,...} = getElement dtd idx | |
8105 | in case decl | |
8106 | of NONE => a before setElement dtd (idx,{decl = SOME(cont,ext), | |
8107 | atts = atts, | |
8108 | errAtts = errAtts}) | |
8109 | | SOME _ => if !O_VALIDATE | |
8110 | then hookError(a,(getPos q,ERR_REDEC_ELEM(Index2Element dtd idx))) | |
8111 | else a | |
8112 | end | |
8113 | ||
8114 | (*--------------------------------------------------------------------*) | |
8115 | (* at option, pretend an element is declared by adding a default *) | |
8116 | (* declaration. Only the decl flag of the element info is updated. *) | |
8117 | (*--------------------------------------------------------------------*) | |
8118 | fun handleUndeclElement dtd idx = | |
8119 | let | |
8120 | val {atts,errAtts,...} = getElement dtd idx | |
8121 | val newInfo = {decl = SOME(CT_ANY,false), | |
8122 | atts = atts, | |
8123 | errAtts = errAtts} | |
8124 | in newInfo before setElement dtd (idx,newInfo) | |
8125 | end | |
8126 | ||
8127 | (*--------------------------------------------------------------------*) | |
8128 | (* check whether an element is declared and whether it already had an *) | |
8129 | (* attribute list declaration. Cf. 3.3: *) | |
8130 | (* *) | |
8131 | (* At user option, an XML processor may issue a warning if *) | |
8132 | (* attributes are declared for an element type not itself declared, *) | |
8133 | (* but this is not an error. *) | |
8134 | (* *) | |
8135 | (* ... an XML processor may at user option issue a warning when *) | |
8136 | (* more than one attribute-list declaration is provided for a given *) | |
8137 | (* element type, ... *) | |
8138 | (* *) | |
8139 | (* print a warning if the element is not declared or already had an *) | |
8140 | (* attribute list declaration. *) | |
8141 | (*--------------------------------------------------------------------*) | |
8142 | fun enterAttList dtd (a,q) idx = | |
8143 | let | |
8144 | val {decl,atts,errAtts,...} = getElement dtd idx | |
8145 | val a1 = if isSome decl orelse not (!O_WARN_ATT_NO_ELEM) then a | |
8146 | else hookWarning(a,(getPos q,WARN_ATT_UNDEC_ELEM(Index2Element dtd idx))) | |
8147 | in | |
8148 | case atts | |
8149 | of NONE => a1 before | |
8150 | setElement dtd (idx,{decl=decl,atts=SOME(nil,false),errAtts=errAtts}) | |
8151 | | _ => if !O_INTEROPERABILITY andalso !O_WARN_MULT_ATT_DECL | |
8152 | then hookWarning(a1,(getPos q,WARN_MULT_ATT_DECL(Index2Element dtd idx))) | |
8153 | else a1 | |
8154 | end | |
8155 | ||
8156 | (*--------------------------------------------------------------------*) | |
8157 | (* check whether attribute "xml:space" is declared correctly. 2.10: *) | |
8158 | (* *) | |
8159 | (* A special attribute named xml:space may be attached ... In valid *) | |
8160 | (* documents, this attribute, like any other, must be declared if *) | |
8161 | (* it is used. When declared, it must be given as an enumerated *) | |
8162 | (* type whose only possible values are "default" and "preserve". *) | |
8163 | (*--------------------------------------------------------------------*) | |
8164 | fun checkAttDef (a,q) (aidx,attType,_,_) = | |
8165 | if aidx<>xmlSpaceIdx orelse attType=xmlSpaceType then a | |
8166 | else hookError(a,(getPos q,ERR_XML_SPACE)) | |
8167 | ||
8168 | (*--------------------------------------------------------------------*) | |
8169 | (* enter a definition of a single attribute to the element table. *) | |
8170 | (* ignore the definition if the attribute is already defined for that *) | |
8171 | (* element. Cf. 3.3: *) | |
8172 | (* *) | |
8173 | (* When more than one AttlistDecl is provided for a given element *) | |
8174 | (* type, the contents of all those provided are merged. When more *) | |
8175 | (* than one definition is provided for the same attribute of a *) | |
8176 | (* given element type, the first declaration is binding and later *) | |
8177 | (* declarations are ignored. For interoperability, an XML processor *) | |
8178 | (* may at user option issue a warning when ... more than one *) | |
8179 | (* attribute definition is provided for a given attribute, but this *) | |
8180 | (* is not an error. *) | |
8181 | (* *) | |
8182 | (* If the attribute type is ID, check whether an element already has *) | |
8183 | (* an attribute of that type. 3.3.1: *) | |
8184 | (* *) | |
8185 | (* Validity Constraint: One ID per Element Type *) | |
8186 | (* No element type may have more than one ID attribute specified. *) | |
8187 | (*--------------------------------------------------------------------*) | |
8188 | (* print an error if the element already has an ID attribute. *) | |
8189 | (* print a warning if the attr. is already defined for this element. *) | |
8190 | (*--------------------------------------------------------------------*) | |
8191 | (* return the new application data. *) | |
8192 | (*--------------------------------------------------------------------*) | |
8193 | fun addAttribute dtd (a,q) (eidx,attDef as (att,attType,attDefault,_)) = | |
8194 | let | |
8195 | val a1 = checkAttDef (a,q) attDef | |
8196 | ||
8197 | fun doit nil = (false,[attDef],a) | |
8198 | | doit (atts as (ad as (aidx,_,_,_))::rest) = | |
8199 | if aidx=att | |
8200 | then let val a1 = if !O_INTEROPERABILITY andalso !O_WARN_MULT_ATT_DEF | |
8201 | then let val warn = WARN_MULT_ATT_DEF | |
8202 | (Index2Element dtd eidx,Index2AttNot dtd att) | |
8203 | in hookWarning(a,(getPos q,warn)) | |
8204 | end | |
8205 | else a | |
8206 | in (true,atts,a1) | |
8207 | end | |
8208 | else (if aidx<att then (false,attDef::atts,a) | |
8209 | else let val (redefined,atts1,a1) = doit rest | |
8210 | in (redefined,ad::atts1,a1) | |
8211 | end) | |
8212 | ||
8213 | val {decl,atts,errAtts,...} = getElement dtd eidx | |
8214 | val (defs,hadId) = getOpt(atts,(nil,false)) | |
8215 | val (redefined,defs1,a1) = doit defs | |
8216 | val (newId,a1) = if isIdType attType | |
8217 | then let val a1 = if hadId andalso (not redefined) andalso !O_VALIDATE | |
8218 | then hookError(a,(getPos q,ERR_MULT_ID_ELEM | |
8219 | (Index2Element dtd eidx))) | |
8220 | else a | |
8221 | in (true,a1) | |
8222 | end | |
8223 | else (hadId,a) | |
8224 | val (_,defs1,a1) = doit defs | |
8225 | val _ = setElement dtd (eidx,{decl = decl, | |
8226 | atts = SOME(defs1,newId), | |
8227 | errAtts = errAtts}) | |
8228 | in a1 | |
8229 | end | |
8230 | ||
8231 | (*--------------------------------------------------------------------*) | |
8232 | (* check whether a name starts with (a case variant of) "xml" and if *) | |
8233 | (* yes, whether it is an allowed name from the spec. Cf. 3: *) | |
8234 | (* *) | |
8235 | (* This specification does not constrain ... names of the element *) | |
8236 | (* types and attributes, except that names beginning with a match *) | |
8237 | (* to (('X'|'x')('M'|'m')('L'|'l')) are reserved for standardization*) | |
8238 | (* in this or future versions of this specification. *) | |
8239 | (* *) | |
8240 | (* and 2.10, 2.12: *) | |
8241 | (* *) | |
8242 | (* ... a special attribute named xml:space may be attached ... *) | |
8243 | (* ... A special attribute named xml:lang may be inserted ... *) | |
8244 | (* *) | |
8245 | (* print an error if the name is reserved and not standardized. *) | |
8246 | (*--------------------------------------------------------------------*) | |
8247 | fun startsWithXml name = | |
8248 | case name | |
8249 | of c1::c2::c3::cs => (c1=0wx58 orelse c1=0wx78) andalso | |
8250 | (c2=0wx4D orelse c2=0wx6D) andalso (c3=0wx4C orelse c3=0wx6C) | |
8251 | | _ => false | |
8252 | fun checkAttName (a,q) name = | |
8253 | if !O_CHECK_RESERVED andalso startsWithXml name then | |
8254 | case name | |
8255 | of [0wx78,0wx6d,0wx6c,0wx3a,0wx6c,0wx61,0wx6e,0wx67] (* ":lang" *) => a | |
8256 | | [0wx78,0wx6d,0wx6c,0wx3a,0wx73,0wx70,0wx61,0wx63,0wx65] (* ":space" *) => a | |
8257 | | _ => hookError(a,(getPos q,ERR_RESERVED(name,IT_ATT_NAME))) | |
8258 | else a | |
8259 | fun checkElemName (a,q) name = | |
8260 | if !O_CHECK_RESERVED andalso startsWithXml name | |
8261 | then hookError(a,(getPos q,ERR_RESERVED(name,IT_ELEM))) | |
8262 | else a | |
8263 | ||
8264 | (*--------------------------------------------------------------------*) | |
8265 | (* check for each element in the dtd, whether a name token occurs *) | |
8266 | (* more than once in its enumerated attribute types. *) | |
8267 | (* *) | |
8268 | (* print a warning for each element where this is true. *) | |
8269 | (* *) | |
8270 | (* return nothing. *) | |
8271 | (*--------------------------------------------------------------------*) | |
8272 | fun checkMultEnum dtd (a,q) = | |
8273 | if !O_INTEROPERABILITY andalso !O_WARN_MULT_ENUM then | |
8274 | let | |
8275 | fun doElem a idx = | |
8276 | let | |
8277 | (*-----------------------------------------------------*) | |
8278 | (* for each i, add i to yet if it not in that list. *) | |
8279 | (* otherwise add it to dup. *) | |
8280 | (*-----------------------------------------------------*) | |
8281 | fun do_list yd nil = yd | |
8282 | | do_list (yet,dup) (i::is) = | |
8283 | let val yd' = case insertNewInt (i,yet) | |
8284 | of NONE => (yet,insertInt (i,dup)) | |
8285 | | SOME new => (new,dup) | |
8286 | in do_list yd' is | |
8287 | end | |
8288 | (*-----------------------------------------------------*) | |
8289 | (* For each enumerated attribute type call the appro- *) | |
8290 | (* priate function. *) | |
8291 | (*-----------------------------------------------------*) | |
8292 | fun doit (yet,dup) nil = dup | |
8293 | | doit (yet,dup) ((_,attType,_,_)::rest) = | |
8294 | case attType | |
8295 | of AT_GROUP is => doit (do_list (yet,dup) is) rest | |
8296 | | AT_NOTATION is => doit (do_list (yet,dup) is) rest | |
8297 | | _ => doit (yet,dup) rest | |
8298 | ||
8299 | val defs = case #atts(getElement dtd idx) | |
8300 | of NONE => nil | |
8301 | | SOME(defs,_) => defs | |
8302 | val dup = doit (nil,nil) defs | |
8303 | in | |
8304 | if null dup then a | |
8305 | else hookWarning(a,(getPos q,WARN_ENUM_ATTS | |
8306 | (Index2Element dtd idx,map (Index2AttNot dtd) dup))) | |
8307 | end | |
8308 | (*-----------------------------------------------------------*) | |
8309 | (* the highest used index is usedIndices-1. *) | |
8310 | (*-----------------------------------------------------------*) | |
8311 | val maxIdx = maxUsedElem dtd | |
8312 | ||
8313 | fun doit a i = if i>maxIdx then a else doit (doElem a i) (i+1) | |
8314 | in | |
8315 | doit a 0 | |
8316 | end | |
8317 | else a | |
8318 | ||
8319 | (*--------------------------------------------------------------------*) | |
8320 | (* check for all id names refereneced by some IDREF attribute whether *) | |
8321 | (* it was also declared by an ID attribute. *) | |
8322 | (* *) | |
8323 | (* print an error if a referenced ID name was not defined. *) | |
8324 | (* *) | |
8325 | (* return nothing. *) | |
8326 | (*--------------------------------------------------------------------*) | |
8327 | fun checkDefinedIds dtd (a,q) = | |
8328 | if !O_VALIDATE then | |
8329 | let | |
8330 | val maxId = maxUsedId dtd | |
8331 | ||
8332 | fun doOne a i = let val (decl,refs) = getId dtd i | |
8333 | in if decl orelse null refs then a | |
8334 | else hookError(a,(hd refs,ERR_UNDECL_ID(Index2Id dtd i,tl refs))) | |
8335 | end | |
8336 | fun doAll a i = if i>maxId then a else doAll (doOne a i) (i+1) | |
8337 | in | |
8338 | doAll a 0 | |
8339 | end | |
8340 | else a | |
8341 | ||
8342 | (*--------------------------------------------------------------------*) | |
8343 | (* check for all declared unparsed entities, whether their notations *) | |
8344 | (* have been declared. *) | |
8345 | (* *) | |
8346 | (* print an error if a notation was not declared. *) | |
8347 | (* *) | |
8348 | (* return nothing. *) | |
8349 | (*--------------------------------------------------------------------*) | |
8350 | fun checkUnparsed dtd a = | |
8351 | if !O_VALIDATE then | |
8352 | let | |
8353 | val maxGen = maxUsedGen dtd | |
8354 | ||
8355 | fun doOne a i = | |
8356 | case getGenEnt dtd i | |
8357 | of (GE_UNPARSED(_,nidx,pos),_) => | |
8358 | if hasNotation dtd nidx then a | |
8359 | else hookError(a,(pos,ERR_UNDECLARED | |
8360 | (IT_NOTATION,Index2AttNot dtd nidx,LOC_NONE))) | |
8361 | | _ => a | |
8362 | fun doAll a i = if i>maxGen then a else doAll (doOne a i) (i+1) | |
8363 | in | |
8364 | doAll a 0 | |
8365 | end | |
8366 | else a | |
8367 | end | |
8368 | (* stop of ../../Parser/Dtd/dtdDeclare.sml *) | |
8369 | (* start of ../../Parser/Dtd/dtdAttributes.sml *) | |
8370 | (*--------------------------------------------------------------------------*) | |
8371 | (* Structure: DtdAttributes *) | |
8372 | (* *) | |
8373 | (* Exceptions raised by functions in this structure: *) | |
8374 | (* checkAttValue : AttValue InternalError *) | |
8375 | (* checkDefinedIds : none *) | |
8376 | (* genMissingAtts : none *) | |
8377 | (* makeAttValue : AttValue InternalError *) | |
8378 | (*--------------------------------------------------------------------------*) | |
8379 | functor DtdAttributes (structure Dtd : Dtd | |
8380 | structure Entities : Entities | |
8381 | structure ParserOptions : ParserOptions) = | |
8382 | struct | |
8383 | structure DtdDeclare = DtdDeclare (structure Dtd = Dtd | |
8384 | structure Entities = Entities | |
8385 | structure ParserOptions = ParserOptions) | |
8386 | open | |
8387 | UniChar UniClasses UtilList | |
8388 | Base Dtd DtdDeclare Errors Entities HookData ParserOptions | |
8389 | ||
8390 | val THIS_MODULE = "DtdAttributes" | |
8391 | ||
8392 | exception AttValue of AppData | |
8393 | ||
8394 | (*--------------------------------------------------------------------*) | |
8395 | (* this is the list of language codes in ISO 639. *) | |
8396 | (*--------------------------------------------------------------------*) | |
8397 | val iso639codes = | |
8398 | Vector.fromList | |
8399 | ["AA","AB","AF","AM","AR","AS","AY","AZ", | |
8400 | "BA","BE","BG","BH","BI","BN","BO","BR", | |
8401 | "CA","CO","CS","CY", | |
8402 | "DA","DE","DZ", | |
8403 | "EL","EN","EO","ES","ET","EU", | |
8404 | "FA","FI","FJ","FO","FR","FY", | |
8405 | "GA","GD","GL","GN","GU", | |
8406 | "HA","HE","HI","HR","HU","HY", | |
8407 | "IA","ID","IE","IK","IN","IS","IT","IU","IW", | |
8408 | "JA","JI","JW", | |
8409 | "KA","KK","KL","KM","KN","KO","KS","KU","KY", | |
8410 | "LA","LN","LO","LT","LV", | |
8411 | "MG","MI","MK","ML","MN","MO","MR","MS","MT","MY", | |
8412 | "NA","NE","NL","NO", | |
8413 | "OC","OM","OR", | |
8414 | "PA","PL","PS","PT", | |
8415 | "QU", | |
8416 | "RM","RN","RO","RU","RW", | |
8417 | "SA","SD","SG","SH","SI","SK","SL","SM","SN","SO","SQ","SR","SS","ST","SU","SV","SW", | |
8418 | "TA","TE","TG","TH","TI","TK","TL","TN","TO","TR","TS","TT","TW", | |
8419 | "UG","UK","UR","UZ", | |
8420 | "VI","VO", | |
8421 | "WO", | |
8422 | "XH", | |
8423 | "YI","YO", | |
8424 | "ZA","ZH","ZU"] | |
8425 | ||
8426 | (*--------------------------------------------------------------------*) | |
8427 | (* a two-dimensional field [0..25][0..25] of booleans for ISO 639. *) | |
8428 | (*--------------------------------------------------------------------*) | |
8429 | val iso639field = | |
8430 | let | |
8431 | val arr = Array.tabulate(26,fn _ => Array.array(26,false)) | |
8432 | val _ = Vector.map | |
8433 | (fn s => Array.update(Array.sub(arr,ord(String.sub(s,0))-65), | |
8434 | ord(String.sub(s,1))-65, | |
8435 | true)) | |
8436 | iso639codes | |
8437 | in Vector.tabulate(26,fn i => Array.extract (Array.sub(arr,i),0,NONE)) | |
8438 | end | |
8439 | ||
8440 | (*--------------------------------------------------------------------*) | |
8441 | (* for a letter, compute ord(toUpper c)-ord(#"A"), for subscripting. *) | |
8442 | (*--------------------------------------------------------------------*) | |
8443 | val toUpperMask = Chars.notb(0wx20) | |
8444 | fun cIndex c = Chars.toInt(Chars.andb(c,toUpperMask)-0wx41) | |
8445 | ||
8446 | (*--------------------------------------------------------------------*) | |
8447 | (* are these two letters an ISO 639 code? *) | |
8448 | (*--------------------------------------------------------------------*) | |
8449 | fun isIso639 (c1,c2) = | |
8450 | if !O_CHECK_ISO639 then | |
8451 | Vector.sub(Vector.sub(iso639field,cIndex c1),cIndex c2) | |
8452 | handle Subscript => false | |
8453 | else isAsciiLetter c1 andalso isAsciiLetter c2 | |
8454 | ||
8455 | (*--------------------------------------------------------------------*) | |
8456 | (* does this match Subcode ('-' Subcode)* ? *) | |
8457 | (* is this a sequence of ('-' Subcode) ? *) | |
8458 | (* Iana codes and user codes also end on ([a-z] | [A-Z])+ *) | |
8459 | (*--------------------------------------------------------------------*) | |
8460 | fun isSubcode' nil = false | |
8461 | | isSubcode' (c::cs) = | |
8462 | let fun doit nil = true | |
8463 | | doit (c::cs) = if c=0wx2D then isSubcode' cs | |
8464 | else isAsciiLetter c andalso doit cs | |
8465 | in isAsciiLetter c andalso doit cs | |
8466 | end | |
8467 | fun isSubcode nil = true | |
8468 | | isSubcode (c::cs) = c=0wx2D andalso isSubcode' cs | |
8469 | val isIanaUser = isSubcode' | |
8470 | ||
8471 | (*--------------------------------------------------------------------*) | |
8472 | (* Check whether a "xml:lang" attribute matches the LanguageID *) | |
8473 | (* production. 2.12: *) | |
8474 | (* *) | |
8475 | (* [33] LanguageID ::= Langcode ('-' Subcode)* *) | |
8476 | (* [34] Langcode ::= ISO639Code | IanaCode | UserCode *) | |
8477 | (* [35] ISO639Code ::= ([a-z] | [A-Z]) ([a-z] | [A-Z]) *) | |
8478 | (* [36] IanaCode ::= ('i' | 'I') '-' ([a-z] | [A-Z])+ *) | |
8479 | (* [37] UserCode ::= ('x' | 'X') '-' ([a-z] | [A-Z])+ *) | |
8480 | (* [38] Subcode ::= ([a-z] | [A-Z])+ *) | |
8481 | (* *) | |
8482 | (* print an error and raise AttValue if the "xml:lang" attribute does *) | |
8483 | (* not have a valid value. *) | |
8484 | (*--------------------------------------------------------------------*) | |
8485 | fun checkAttSpec (a,q) (aidx,cs) = | |
8486 | if !O_CHECK_LANGID andalso aidx=xmlLangIdx | |
8487 | then let val valid = case cs | |
8488 | of c::0wx2D::cs' => (c=0wx49 orelse | |
8489 | c=0wx69 orelse | |
8490 | c=0wx58 orelse | |
8491 | c=0wx78) andalso isIanaUser cs' | |
8492 | | c1::c2::cs' => isIso639 (c1,c2) andalso isSubcode cs' | |
8493 | | _ => false | |
8494 | in | |
8495 | if valid then a | |
8496 | else raise AttValue(hookError(a,(getPos q,ERR_ATT_IS_NOT(cs,IT_LANG_ID)))) | |
8497 | end | |
8498 | else a | |
8499 | ||
8500 | (*--------------------------------------------------------------------*) | |
8501 | (* Normalize an attribute value of type other than CDATA, and split *) | |
8502 | (* it into tokens at space characters. Cf. 3.3.3: *) | |
8503 | (* *) | |
8504 | (* ... If the declared value is not CDATA, then the XML processor *) | |
8505 | (* must further process the normalized attribute value by dis- *) | |
8506 | (* carding any leading and trailing space (#x20) characters, and by *) | |
8507 | (* replacing sequences of space (#x20) characters by a single space *) | |
8508 | (* (#x20) character. *) | |
8509 | (* *) | |
8510 | (* replacement of references is already done when parsing the literal,*) | |
8511 | (* thus we need only do whitespace normalization. we don't need to *) | |
8512 | (* take care of the 3rd rule since replacement of sequences of #x20 *) | |
8513 | (* and then splitting subsumes its effect. *) | |
8514 | (* *) | |
8515 | (* return the list of tokens as character lists and the normalized *) | |
8516 | (* value as a char vector. *) | |
8517 | (*--------------------------------------------------------------------*) | |
8518 | fun splitAttValue av = | |
8519 | let | |
8520 | fun doOne nil = (nil,nil,nil) | |
8521 | | doOne (c::cs) = if c=0wx20 then let val (toks,ys) = doAll true cs | |
8522 | in (nil,toks,ys) | |
8523 | end | |
8524 | else let val (tok,toks,ys) = doOne cs | |
8525 | in ((c::tok),toks,c::ys) | |
8526 | end | |
8527 | and doAll addS nil = (nil,nil) | |
8528 | | doAll addS (c::cs) = if c=0wx20 then doAll addS cs | |
8529 | else let val (tok,toks,ys) = doOne cs | |
8530 | in ((c::tok)::toks, | |
8531 | if addS then 0wx20::c::ys else c::ys) | |
8532 | end | |
8533 | ||
8534 | val (tokens,normed) = doAll false av | |
8535 | in (Data2Vector normed,tokens) | |
8536 | end | |
8537 | (*--------------------------------------------------------------------*) | |
8538 | (* normalize an attribute value other than CDATA according to 3.3.3. *) | |
8539 | (* *) | |
8540 | (* return the normalized att value as a Vector. *) | |
8541 | (*--------------------------------------------------------------------*) | |
8542 | fun normAttValue av = | |
8543 | let fun doOne nil = nil | |
8544 | | doOne (c::cs) = if c=0wx20 then doAll true cs | |
8545 | else c::doOne cs | |
8546 | and doAll addS nil = nil | |
8547 | | doAll addS (c::cs) = if c=0wx20 then doAll addS cs | |
8548 | else let val ys = doOne cs | |
8549 | in if addS then 0wx20::c::ys else c::ys | |
8550 | end | |
8551 | val normed = doAll false av | |
8552 | in Data2Vector normed | |
8553 | end | |
8554 | ||
8555 | (*--------------------------------------------------------------------*) | |
8556 | (* Check whether a sequence of chars forms a name (token). *) | |
8557 | (*--------------------------------------------------------------------*) | |
8558 | fun isNmToken cs = List.all isName cs | |
8559 | fun isaName nil = false | |
8560 | | isaName (c::cs) = isNms c andalso List.all isName cs | |
8561 | ||
8562 | (*--------------------------------------------------------------------*) | |
8563 | (* Check whether a list of tokens is a single what fulfilling isWhat. *) | |
8564 | (* print an error and raise AttValue if it is not. *) | |
8565 | (*--------------------------------------------------------------------*) | |
8566 | fun checkOne (isWhat,what,detail) (a,q) toks = | |
8567 | case toks | |
8568 | of nil => raise AttValue (hookError(a,(getPos q,ERR_EXACTLY_ONE detail))) | |
8569 | | [one] => if isWhat one then one | |
8570 | else raise AttValue(hookError(a,(getPos q,ERR_ATT_IS_NOT(one,what)))) | |
8571 | | more => raise AttValue(hookError(a,(getPos q,ERR_AT_MOST_ONE detail))) | |
8572 | (*--------------------------------------------------------------------*) | |
8573 | (* Check whether a list of tokens is non-empty and all elements ful- *) | |
8574 | (* fil isWhat. *) | |
8575 | (* print an error and raise AttValue if not. *) | |
8576 | (*--------------------------------------------------------------------*) | |
8577 | fun checkList (isWhat,what,detail) (a,q) toks = | |
8578 | case toks | |
8579 | of nil => raise AttValue (hookError(a,(getPos q,ERR_AT_LEAST_ONE detail))) | |
8580 | | _ => app (fn one => if isWhat one then () | |
8581 | else let val err = ERR_ATT_IS_NOT(one,what) | |
8582 | in raise AttValue(hookError(a,(getPos q,err))) | |
8583 | end) toks | |
8584 | (*--------------------------------------------------------------------*) | |
8585 | (* Convert a list of tokens into an ID att value. 3.3.1: *) | |
8586 | (* *) | |
8587 | (* Validity Constraint: ID *) | |
8588 | (* Values of type ID must match the Name production. *) | |
8589 | (* *) | |
8590 | (* Validity Constraint: ID *) | |
8591 | (* ... A name must not appear more than once in an XML document as *) | |
8592 | (* a value of this type; i.e., ID values must uniquely identify the *) | |
8593 | (* elements which bear them. *) | |
8594 | (* *) | |
8595 | (* mark the value as used, print an error and raise AttValue if it *) | |
8596 | (* was already used. *) | |
8597 | (* print an error and raise AttValue if it is not a name. *) | |
8598 | (*--------------------------------------------------------------------*) | |
8599 | fun takeId (dtd,inDtd) (a,q) toks = | |
8600 | let val one = checkOne (isaName,IT_NAME,IT_ID_NAME) (a,q) toks | |
8601 | val idx = Id2Index dtd one | |
8602 | val _ = if inDtd then () | |
8603 | else let val (decl,refs) = getId dtd idx | |
8604 | in if decl then let val err = ERR_REPEATED_ID one | |
8605 | in raise AttValue (hookError(a,(getPos q,err))) | |
8606 | end | |
8607 | else setId dtd (idx,(true,refs)) | |
8608 | end | |
8609 | in (SOME(AV_ID idx),a) | |
8610 | end | |
8611 | ||
8612 | (*--------------------------------------------------------------------*) | |
8613 | (* Convert a list of tokens into an IDREF/IDREFS att value. 3.3.1: *) | |
8614 | (* *) | |
8615 | (* Validity Constraint: IDREF *) | |
8616 | (* Values of type IDREF must match the Name production. *) | |
8617 | (* *) | |
8618 | (* print an error an raise AttValue if it is not a (list of) name(s). *) | |
8619 | (*--------------------------------------------------------------------*) | |
8620 | fun setIdRef (dtd,q) idx = | |
8621 | let val (decl,refs) = getId dtd idx | |
8622 | in setId dtd (idx,(decl,getPos q::refs)) | |
8623 | end | |
8624 | fun takeIdref (dtd,_) (a,q) toks = | |
8625 | let val one = checkOne (isaName,IT_NAME,IT_ID_NAME) (a,q) toks | |
8626 | val idx=Id2Index dtd one | |
8627 | val _ = setIdRef (dtd,q) idx | |
8628 | in (SOME(AV_IDREF idx),a) | |
8629 | end | |
8630 | fun takeIdrefs (dtd,_) (a,q) toks = | |
8631 | let val _ = checkList (isaName,IT_NAME,IT_ID_NAME) (a,q) toks | |
8632 | val idxs = map (Id2Index dtd) toks | |
8633 | val _ = app (setIdRef (dtd,q)) idxs | |
8634 | in (SOME(AV_IDREFS idxs),a) | |
8635 | end | |
8636 | ||
8637 | (*--------------------------------------------------------------------*) | |
8638 | (* Convert a list of tokens into an ENTITY/IES att value. 3.3.1: *) | |
8639 | (* *) | |
8640 | (* Validity Constraint: Entity Name *) | |
8641 | (* Values of type ENTITY must match the Name production... *) | |
8642 | (* must match the name of an unparsed entity declared in the DTD. *) | |
8643 | (* *) | |
8644 | (* print an error and raise AttValue if a token is not a name. *) | |
8645 | (* print an error and raise AttValue if an entity is undeclared or a *) | |
8646 | (* parsed entity. *) | |
8647 | (*--------------------------------------------------------------------*) | |
8648 | fun checkEntity (dtd,inDtd) (a,q) name = | |
8649 | let val idx = GenEnt2Index dtd name | |
8650 | val (ent,_) = getGenEnt dtd idx | |
8651 | val _ = if inDtd then () | |
8652 | else case ent | |
8653 | of GE_UNPARSED _ => () | |
8654 | | GE_NULL => let val err = ERR_UNDECLARED(IT_GEN_ENT,name,LOC_NONE) | |
8655 | in raise AttValue (hookError(a,(getPos q,err))) | |
8656 | end | |
8657 | | _ => let val err = ERR_MUST_BE_UNPARSED(name,LOC_NONE) | |
8658 | in raise AttValue (hookError(a,(getPos q,err))) | |
8659 | end | |
8660 | in idx | |
8661 | end | |
8662 | fun takeEntity (dtd,inDtd) (aq as (a,_)) toks = | |
8663 | let val one = checkOne (isaName,IT_NAME,IT_ENT_NAME) aq toks | |
8664 | val idx = checkEntity (dtd,inDtd) aq one | |
8665 | in (SOME(AV_ENTITY idx),a) | |
8666 | end | |
8667 | fun takeEntities (dtd,inDtd) (aq as (a,_)) toks = | |
8668 | let val _ = checkList (isaName,IT_NAME,IT_ENT_NAME) aq toks | |
8669 | val idxs = map (checkEntity (dtd,inDtd) aq) toks | |
8670 | in (SOME(AV_ENTITIES idxs),a) | |
8671 | end | |
8672 | ||
8673 | (*--------------------------------------------------------------------*) | |
8674 | (* Convert a list of tokens into a NOTATION att value. 3.3.1: *) | |
8675 | (* *) | |
8676 | (* Validity Constraint: Notation Attributes *) | |
8677 | (* Values of this type must match one of the notation names *) | |
8678 | (* included in the declaration. *) | |
8679 | (* *) | |
8680 | (* print an error and raise AttValue if it is not a single name. *) | |
8681 | (* print an error and raise AttValue if the notation's index is not *) | |
8682 | (* in the list given as 1st arg. *) | |
8683 | (*--------------------------------------------------------------------*) | |
8684 | fun takeNotation is (dtd,inDtd) (aq as (a,q)) toks = | |
8685 | let val one = checkOne (isaName,IT_NAME,IT_NOT_NAME) aq toks | |
8686 | val idx = AttNot2Index dtd one | |
8687 | val _ = if member idx is then () | |
8688 | else let val nots = map (Index2AttNot dtd) is | |
8689 | val err = ERR_MUST_BE_AMONG(IT_NOT_NAME,one,nots) | |
8690 | in raise AttValue (hookError(a,(getPos q,err))) | |
8691 | end | |
8692 | in (SOME(AV_NOTATION(is,idx)),a) | |
8693 | end | |
8694 | ||
8695 | (*--------------------------------------------------------------------*) | |
8696 | (* Convert a list of tokens into an enumerated att value. 3.3.1: *) | |
8697 | (* *) | |
8698 | (* Validity Constraint: Enumeration *) | |
8699 | (* Values of this type must match one of the Nmtoken tokens in *) | |
8700 | (* the declaration. *) | |
8701 | (* *) | |
8702 | (* print an error and raise AttValue if it is not a single name token.*) | |
8703 | (* print an error and raise AttValue if the token's index is not *) | |
8704 | (* in the list given as 1st arg. *) | |
8705 | (*--------------------------------------------------------------------*) | |
8706 | fun takeGroup is (dtd,_) (aq as (a,q)) toks = | |
8707 | let val one = checkOne (isNmToken,IT_NMTOKEN,IT_NMTOKEN) aq toks | |
8708 | val idx = AttNot2Index dtd one | |
8709 | val _ = if member idx is then () | |
8710 | else let val toks = map (Index2AttNot dtd) is | |
8711 | val err = ERR_MUST_BE_AMONG(IT_NMTOKEN,one,toks) | |
8712 | in raise AttValue (hookError(a,(getPos q,err))) | |
8713 | end | |
8714 | in (SOME(AV_GROUP(is,idx)),a) | |
8715 | end | |
8716 | ||
8717 | (*--------------------------------------------------------------------*) | |
8718 | (* Given an attribute type and a list of characters, construct the *) | |
8719 | (* corresponding AttValue. *) | |
8720 | (* *) | |
8721 | (* print an error (and possibly raise AttValue) if the attribute *) | |
8722 | (* is ill-formed. *) | |
8723 | (*--------------------------------------------------------------------*) | |
8724 | fun makeAttValue dtd (a,q) (aidx,attType,ext,inDtd,cs) = | |
8725 | if attType=AT_CDATA | |
8726 | then let val cv = Data2Vector cs | |
8727 | in if !O_VALIDATE andalso hasDtd dtd | |
8728 | then (cv,(SOME(AV_CDATA cv),checkAttSpec (a,q) (aidx,cs))) | |
8729 | else (cv,(NONE,a)) | |
8730 | end | |
8731 | else | |
8732 | if !O_VALIDATE andalso hasDtd dtd then | |
8733 | let | |
8734 | val a1 = checkAttSpec (a,q) (aidx,cs) | |
8735 | val (cv,toks) = splitAttValue cs | |
8736 | val a2 = | |
8737 | if ext andalso standsAlone dtd | |
8738 | then let val cdata = Data2Vector cs | |
8739 | in if cdata=cv then a1 | |
8740 | else let val err = ERR_STANDALONE_NORM(Index2AttNot dtd aidx) | |
8741 | val _ = setStandAlone dtd (not (!O_ERROR_MINIMIZE)) | |
8742 | in hookError(a1,(getPos q,err)) | |
8743 | end | |
8744 | end | |
8745 | else a1 | |
8746 | in case attType | |
8747 | of AT_NMTOKEN => (cv,(SOME(AV_NMTOKEN(checkOne(isNmToken,IT_NMTOKEN, | |
8748 | IT_NMTOKEN) (a2,q) toks)),a2)) | |
8749 | | AT_NMTOKENS => (cv,(SOME(AV_NMTOKENS toks),a2)) before | |
8750 | checkList(isNmToken,IT_NMTOKEN,IT_NMTOKEN) (a2,q) toks | |
8751 | | AT_ID => (cv,takeId (dtd,inDtd) (a2,q) toks) | |
8752 | | AT_IDREF => (cv,takeIdref (dtd,inDtd) (a2,q) toks) | |
8753 | | AT_IDREFS => (cv,takeIdrefs (dtd,inDtd) (a2,q) toks) | |
8754 | | AT_ENTITY => (cv,takeEntity (dtd,inDtd) (a2,q) toks) | |
8755 | | AT_ENTITIES => (cv,takeEntities (dtd,inDtd) (a2,q) toks) | |
8756 | | AT_GROUP is => (cv,takeGroup is (dtd,inDtd) (a2,q) toks) | |
8757 | | AT_NOTATION is => (cv,takeNotation is (dtd,inDtd) (a2,q) toks) | |
8758 | | AT_CDATA => raise InternalError(THIS_MODULE,"makeAttValue", | |
8759 | "AT_CDATA in the innermost case") | |
8760 | end | |
8761 | else (normAttValue cs,(NONE,a)) | |
8762 | ||
8763 | (*--------------------------------------------------------------------*) | |
8764 | (* given an attribute value literal and the attribute type, generate *) | |
8765 | (* the AttValue, and check whether it complies with its default value.*) | |
8766 | (* If yes, make an AttPresent value out of it. *) | |
8767 | (* See 3.3.2: *) | |
8768 | (* *) | |
8769 | (* Validity Constraint: Fixed Attribute Default *) | |
8770 | (* If an attribute has a default value declared with the #FIXED *) | |
8771 | (* keyword, instances of that attribute must match the default *) | |
8772 | (* value. *) | |
8773 | (* *) | |
8774 | (* print an error and raise AttValue if the attribute value doesn't *) | |
8775 | (* comply. *) | |
8776 | (* *) | |
8777 | (* return the value as a AttPresent value. *) | |
8778 | (*--------------------------------------------------------------------*) | |
8779 | fun checkAttValue dtd (a,q) ((aidx,attType,defVal,ext),literal,cs) = | |
8780 | let val (cv,(av,a1)) = makeAttValue dtd (a,q) (aidx,attType,ext,false,cs) | |
8781 | in if !O_VALIDATE andalso hasDtd dtd then | |
8782 | case defVal | |
8783 | of AD_FIXED((def,cv',_),_) => | |
8784 | if cv=cv' then (AP_PRESENT(literal,cv,av),a1) | |
8785 | else raise AttValue | |
8786 | (hookError(a1,(getPos q,ERR_FIXED_VALUE(Index2AttNot dtd aidx,cv,cv')))) | |
8787 | | _ => (AP_PRESENT(literal,cv,av),a1) | |
8788 | else (AP_PRESENT(literal,cv,av),a1) | |
8789 | end | |
8790 | ||
8791 | (*--------------------------------------------------------------------*) | |
8792 | (* check a defaulted attribute value for validity. *) | |
8793 | (* *) | |
8794 | (* since the lexical constraints are checked when the default is *) | |
8795 | (* declared we only need to check whether notations are declared and *) | |
8796 | (* entities are declared and unparsed. An ID attribute cannot be *) | |
8797 | (* defaulted, so no need to check for duplicate ID attributes. *) | |
8798 | (*--------------------------------------------------------------------*) | |
8799 | fun checkDefaultValue dtd (a,q,pos) av = | |
8800 | let | |
8801 | fun checkEntity (idx,a) = | |
8802 | let val (ent,_) = getGenEnt dtd idx | |
8803 | in case ent | |
8804 | of GE_UNPARSED _ => a | |
8805 | | GE_NULL => hookError(a,(getPos q,ERR_UNDECLARED | |
8806 | (IT_GEN_ENT,Index2GenEnt dtd idx, | |
8807 | LOC_ATT_DEFAULT pos))) | |
8808 | | _ => hookError(a,(getPos q,ERR_MUST_BE_UNPARSED | |
8809 | (Index2GenEnt dtd idx,LOC_ATT_DEFAULT pos))) | |
8810 | end | |
8811 | ||
8812 | fun checkNotation (idx,a) = | |
8813 | if hasNotation dtd idx then a | |
8814 | else hookError(a,(getPos q,ERR_UNDECLARED | |
8815 | (IT_NOTATION,Index2AttNot dtd idx,LOC_ATT_DEFAULT pos))) | |
8816 | in | |
8817 | case av | |
8818 | of SOME(AV_ENTITY i) => checkEntity (i,a) | |
8819 | | SOME(AV_ENTITIES is) => foldl checkEntity a is | |
8820 | | SOME(AV_NOTATION(_,i)) => checkNotation(i,a) | |
8821 | | _ => a | |
8822 | end | |
8823 | ||
8824 | (*--------------------------------------------------------------------*) | |
8825 | (* Generate the attributes not specified in a start-tag, the defs of *) | |
8826 | (* these atts and the specified atts given as argument. 3.3.2: *) | |
8827 | (* *) | |
8828 | (* If the declaration is neither #REQUIRED nor #IMPLIED, then the *) | |
8829 | (* AttValue value contains the declared default value; ... If a *) | |
8830 | (* default value is declared, when an XML processor encounters an *) | |
8831 | (* omitted attribute, it is to behave as though the attribute were *) | |
8832 | (* present with the declared default value. *) | |
8833 | (* *) | |
8834 | (* Validity Constraint: Required Attribute *) | |
8835 | (* If the default declaration is the keyword #REQUIRED, then the *) | |
8836 | (* attribute must be specified for all elements of the type in the *) | |
8837 | (* attribute-list declaration. *) | |
8838 | (* *) | |
8839 | (* print an error if a required attribute was omitted. *) | |
8840 | (* *) | |
8841 | (* return the AttSpecList of all attributes for this tag. *) | |
8842 | (*--------------------------------------------------------------------*) | |
8843 | fun genMissingAtts dtd (a,q) (defs,specd) = | |
8844 | let | |
8845 | fun default a (idx,(v as (_,_,av),(pos,checked)),ext) = | |
8846 | let val a1 = if ext andalso !O_VALIDATE andalso standsAlone dtd | |
8847 | then let val err = ERR_STANDALONE_DEF(Index2AttNot dtd idx) | |
8848 | val _ = setStandAlone dtd (not (!O_ERROR_MINIMIZE)) | |
8849 | in hookError(a,(getPos q,err)) | |
8850 | end | |
8851 | else a | |
8852 | val a2 = if !O_VALIDATE andalso not (!checked andalso !O_ERROR_MINIMIZE) | |
8853 | then checkDefaultValue dtd (a1,q,pos) av before checked := true | |
8854 | else a1 | |
8855 | in (AP_DEFAULT v,a1) | |
8856 | end | |
8857 | fun doit a nil = (specd,a) | |
8858 | | doit a ((idx,_,dv,ext)::rest) = | |
8859 | let val (value,a1) = | |
8860 | case dv | |
8861 | of AD_DEFAULT v => default a (idx,v,ext) | |
8862 | | AD_FIXED v => default a (idx,v,ext) | |
8863 | | AD_IMPLIED => (AP_IMPLIED,a) | |
8864 | | AD_REQUIRED => | |
8865 | let val a1 = if not (!O_VALIDATE) then a | |
8866 | else hookError(a,(getPos q, | |
8867 | ERR_MISSING_ATT(Index2AttNot dtd idx))) | |
8868 | in (AP_MISSING,a1) | |
8869 | end | |
8870 | val (other,a2) = doit a1 rest | |
8871 | in ((idx,value,NONE)::other,a2) | |
8872 | end | |
8873 | in doit a defs | |
8874 | end | |
8875 | ||
8876 | (*--------------------------------------------------------------------*) | |
8877 | (* process an undeclared attribute in a start-tag. *) | |
8878 | (* At option, an error message is generated only once for the same *) | |
8879 | (* attribute and element. *) | |
8880 | (* *) | |
8881 | (* possibly print an error. *) | |
8882 | (* *) | |
8883 | (* return nothing. *) | |
8884 | (*--------------------------------------------------------------------*) | |
8885 | fun handleUndeclAtt dtd (a,q) (aidx,att,eidx,elem) = | |
8886 | if !O_ERROR_MINIMIZE then | |
8887 | let val {decl,atts,errAtts} = getElement dtd eidx | |
8888 | in if member aidx errAtts then a | |
8889 | else let val a1 = if !O_VALIDATE andalso hasDtd dtd | |
8890 | then let val err = ERR_UNDECL_ATT(att,elem) | |
8891 | in hookError(a,(getPos q,err)) | |
8892 | end | |
8893 | else a | |
8894 | val a2 = checkAttName (a1,q) att | |
8895 | val _ = setElement dtd (eidx,{decl = decl, | |
8896 | atts = atts, | |
8897 | errAtts = aidx::errAtts}) | |
8898 | in a2 | |
8899 | end | |
8900 | end | |
8901 | else let val a1 = if !O_VALIDATE andalso hasDtd dtd | |
8902 | then hookError(a,(getPos q,ERR_UNDECL_ATT(att,elem))) | |
8903 | else a | |
8904 | in checkAttName (a1,q) att | |
8905 | end | |
8906 | ||
8907 | end | |
8908 | (* stop of ../../Parser/Dtd/dtdAttributes.sml *) | |
8909 | (* start of ../../Parser/Dtd/dtdManager.sml *) | |
8910 | (*--------------------------------------------------------------------------*) | |
8911 | (* Structure: Dtd *) | |
8912 | (* *) | |
8913 | (* Depends on: *) | |
8914 | (* UniChar *) | |
8915 | (* DtdAttributes *) | |
8916 | (* DtdElements *) | |
8917 | (* DtdEntities *) | |
8918 | (* DtdNotations *) | |
8919 | (* DtdStandalone *) | |
8920 | (* *) | |
8921 | (* Exceptions raised by functions in this structure: *) | |
8922 | (* initDtdTables : none *) | |
8923 | (* AttIdx2String : NoSuchSymbol *) | |
8924 | (* ElemIdx2String : NoSuchIndex *) | |
8925 | (* GenEntIdx2String : NoSuchIndex *) | |
8926 | (* IdIdx2String : NoSuchIndex *) | |
8927 | (* NotIdx2String : NoSuchIndex *) | |
8928 | (* GenEntity2String : NoSuchIndex *) | |
8929 | (* ElemInfo2String : NoSuchIndex NoSuchSymbol *) | |
8930 | (* printGenEntTable : NoSuchIndex *) | |
8931 | (* printElementTable : NoSuchIndex NoSuchSymbol *) | |
8932 | (* printDtdTables : NoSuchIndex NoSuchSymbol *) | |
8933 | (*--------------------------------------------------------------------------*) | |
8934 | signature DtdManager = | |
8935 | sig | |
8936 | include Entities | |
8937 | include Dtd | |
8938 | ||
8939 | exception AttValue of AppData | |
8940 | ||
8941 | val makeAttValue : Dtd -> AppData * State | |
8942 | -> int * Base.AttType * bool * bool * UniChar.Data | |
8943 | -> UniChar.Vector * (Base.AttValue option * AppData) | |
8944 | val checkAttValue : Dtd -> AppData * State | |
8945 | -> Base.AttDef * UniChar.Vector * UniChar.Data | |
8946 | -> HookData.AttPresent * AppData | |
8947 | val genMissingAtts : Dtd -> AppData * State | |
8948 | -> Base.AttDefList * HookData.AttSpecList -> HookData.AttSpecList * AppData | |
8949 | val handleUndeclAtt : Dtd -> AppData * State | |
8950 | -> int * UniChar.Data * int * UniChar.Data -> AppData | |
8951 | val handleUndeclElement : Dtd -> int -> Base.ElemInfo | |
8952 | ||
8953 | val checkAttName : AppData * State -> UniChar.Data -> AppData | |
8954 | val checkElemName : AppData * State -> UniChar.Data -> AppData | |
8955 | val checkDefinedIds : Dtd -> AppData * State -> AppData | |
8956 | val checkMultEnum : Dtd -> AppData * State -> AppData | |
8957 | val checkPreDefined : Dtd -> AppData * State -> AppData | |
8958 | val checkUnparsed : Dtd -> AppData -> AppData | |
8959 | ||
8960 | val enterAttList : Dtd -> AppData * State -> int -> AppData | |
8961 | ||
8962 | val addAttribute : Dtd -> AppData * State -> int * Base.AttDef -> AppData | |
8963 | val addElement : Dtd -> AppData * State -> int * Base.ContentSpec * bool -> AppData | |
8964 | val addGenEnt : Dtd -> AppData * State -> int * Base.GenEntity * bool -> AppData | |
8965 | val addNotation : Dtd -> AppData * State -> int * Base.ExternalId -> AppData | |
8966 | val addParEnt : Dtd -> AppData * State -> int * Base.ParEntity * bool -> AppData | |
8967 | end | |
8968 | ||
8969 | functor DtdManager (structure Dtd : Dtd | |
8970 | structure Hooks : Hooks | |
8971 | structure ParserOptions : ParserOptions) : DtdManager = | |
8972 | struct | |
8973 | structure Entities = Entities (structure Hooks = Hooks) | |
8974 | structure DtdAttributes = DtdAttributes (structure Dtd = Dtd | |
8975 | structure Entities = Entities | |
8976 | structure ParserOptions = ParserOptions) | |
8977 | open | |
8978 | Dtd | |
8979 | DtdAttributes | |
8980 | end | |
8981 | (* stop of ../../Parser/Dtd/dtdManager.sml *) | |
8982 | (* start of ../../Parser/Parse/parseBase.sml *) | |
8983 | signature ParseBase = | |
8984 | sig | |
8985 | include Dfa DtdManager Resolve DfaOptions ParserOptions | |
8986 | ||
8987 | exception NoSuchChar of AppData * State | |
8988 | exception NoSuchEntity of AppData * State | |
8989 | exception NotFound of UniChar.Char * AppData * State | |
8990 | exception SyntaxError of UniChar.Char * AppData * State | |
8991 | ||
8992 | val expectedOrEnded : Errors.Expected * Errors.Location -> UniChar.Char -> Errors.Error | |
8993 | ||
8994 | val recoverXml : UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
8995 | val recoverETag : UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
8996 | val recoverSTag : UniChar.Char * AppData * State -> bool * (UniChar.Char * AppData * State) | |
8997 | val recoverDecl : bool -> UniChar.Char * AppData * State -> (UniChar.Char * AppData * State) | |
8998 | ||
8999 | val useParamEnts : unit -> bool | |
9000 | end | |
9001 | ||
9002 | (*--------------------------------------------------------------------------*) | |
9003 | (* Structure: ParseBase *) | |
9004 | (*--------------------------------------------------------------------------*) | |
9005 | (* This structure provides exceptions for the Parse functions, and strings *) | |
9006 | (* for error generation (these strings don't really need to reside in their *) | |
9007 | (* own structure, but like this the code is more easier to read). *) | |
9008 | (*--------------------------------------------------------------------------*) | |
9009 | functor ParseBase (structure Dtd : Dtd | |
9010 | structure Hooks : Hooks | |
9011 | structure Resolve : Resolve | |
9012 | structure ParserOptions : ParserOptions) : ParseBase = | |
9013 | struct | |
9014 | structure DfaOptions = ParserOptions.DfaOptions | |
9015 | structure Dfa = Dfa (structure DfaOptions = DfaOptions) | |
9016 | structure DtdManager = DtdManager (structure Dtd = Dtd | |
9017 | structure Hooks = Hooks | |
9018 | structure ParserOptions = ParserOptions) | |
9019 | open | |
9020 | Base DtdManager DfaOptions Dfa Errors ParserOptions Resolve UniChar | |
9021 | ||
9022 | exception NoSuchChar of AppData * State | |
9023 | exception NoSuchEntity of AppData * State | |
9024 | exception NotFound of UniChar.Char * AppData * State | |
9025 | exception SyntaxError of UniChar.Char * AppData * State | |
9026 | ||
9027 | fun expectedOrEnded (exp,ended) c = | |
9028 | if c=0wx00 then ERR_ENDED_BY_EE ended | |
9029 | else ERR_EXPECTED(exp,[c]) | |
9030 | ||
9031 | (*--------------------------------------------------------------------*) | |
9032 | (* Besides "?>" also recognize ">" as end delimiter, because the typo *) | |
9033 | (* might be an omitted "?". Also stop on "<"; then the entire "?>" *) | |
9034 | (* was omitted; the "<" may not be consumed then. *) | |
9035 | (* Within literals dont recognize ">" and "<", but only "?>"; then *) | |
9036 | (* the typo is an omitted quote character. *) | |
9037 | (*--------------------------------------------------------------------*) | |
9038 | fun recoverXml caq = | |
9039 | let | |
9040 | fun do_lit ch (c,a,q) = | |
9041 | case c | |
9042 | of 0wx00 => (c,a,q) | |
9043 | | 0wx3F (* #"?" *) => | |
9044 | let val (c1,a1,q1) = getChar (a,q) | |
9045 | in if c1=0wx3E (* #">" *) then (c1,a1,q1) | |
9046 | else do_lit ch (c1,a1,q1) | |
9047 | end | |
9048 | | _ => if c=ch then (getChar (a,q)) | |
9049 | else do_lit ch (getChar (a,q)) | |
9050 | fun doit (c,a,q) = | |
9051 | case c | |
9052 | of 0wx00 => (c,a,q) | |
9053 | | 0wx22 (* #""""*) => doit (do_lit c (getChar (a,q))) | |
9054 | | 0wx25 (* #"%" *) => (c,a,q) | |
9055 | | 0wx26 (* #"&" *) => (c,a,q) | |
9056 | | 0wx27 (* #"'" *) => doit (do_lit c (getChar (a,q))) | |
9057 | | 0wx3C (* #"<" *) => (c,a,q) | |
9058 | | 0wx3E (* #">" *) => (getChar (a,q)) | |
9059 | | _ => doit (getChar (a,q)) | |
9060 | in | |
9061 | doit caq | |
9062 | end | |
9063 | ||
9064 | fun recoverETag caq = | |
9065 | let | |
9066 | fun do_lit ch (c,a,q) = | |
9067 | case c | |
9068 | of 0wx00 => (c,a,q) | |
9069 | | _ => if c=ch then (getChar (a,q)) | |
9070 | else do_lit ch (getChar (a,q)) | |
9071 | fun doit (c,a,q) = | |
9072 | case c | |
9073 | of 0wx00 => (c,a,q) | |
9074 | | 0wx22 (* #""""*) => doit (do_lit c (getChar (a,q))) | |
9075 | | 0wx26 (* #"&" *) => (c,a,q) | |
9076 | | 0wx27 (* #"'" *) => doit (do_lit c (getChar (a,q))) | |
9077 | | 0wx3E (* #">" *) => (getChar (a,q)) | |
9078 | | 0wx3C (* #"<" *) => (c,a,q) | |
9079 | | _ => doit (getChar (a,q)) | |
9080 | in | |
9081 | doit caq | |
9082 | end | |
9083 | ||
9084 | fun recoverSTag caq = | |
9085 | let | |
9086 | fun do_lit ch (c,a,q) = | |
9087 | case c | |
9088 | of 0wx00 => (c,a,q) | |
9089 | | _ => if c=ch then (getChar (a,q)) | |
9090 | else do_lit ch (getChar (a,q)) | |
9091 | fun doit (c,a,q) = | |
9092 | case c | |
9093 | of 0wx00 => (false,(c,a,q)) | |
9094 | | 0wx22 (* #""""*) => doit (do_lit c (getChar (a,q))) | |
9095 | | 0wx26 (* #"&" *) => (false,(c,a,q)) | |
9096 | | 0wx27 (* #"'" *) => doit (do_lit c (getChar (a,q))) | |
9097 | | 0wx2F (* #"/" *) => let val (c1,a1,q1) = getChar (a,q) | |
9098 | in if c1=0wx3E (* #">" *) then (true,(c1,a1,q1)) | |
9099 | else doit (c1,a1,q1) | |
9100 | end | |
9101 | | 0wx3E (* #">" *) => (false,getChar (a,q)) | |
9102 | | 0wx3C (* #"<" *) => (false,(c,a,q)) | |
9103 | | _ => doit (getChar (a,q)) | |
9104 | in | |
9105 | doit caq | |
9106 | end | |
9107 | ||
9108 | fun recoverDecl hasSubset caq = | |
9109 | let | |
9110 | fun do_lit ch (c,a,q) = | |
9111 | if c=0wx00 then (c,a,q) | |
9112 | else if c=ch then getChar (a,q) | |
9113 | else do_lit ch (getChar(a,q)) | |
9114 | fun do_decl (c,a,q) = | |
9115 | case c | |
9116 | of 0wx00 => (c,a,q) | |
9117 | | 0wx22 (* #"\""*) => do_decl (do_lit c (getChar (a,q))) | |
9118 | | 0wx27 (* #"'" *) => do_decl (do_lit c (getChar (a,q))) | |
9119 | | 0wx3E (* #">" *) => getChar (a,q) | |
9120 | | _ => do_decl (getChar (a,q)) | |
9121 | fun do_subset (c,a,q) = | |
9122 | case c | |
9123 | of 0wx00 => (c,a,q) | |
9124 | | 0wx3C (* #"<" *) => do_subset (do_decl (getChar (a,q))) | |
9125 | | 0wx5D (* #"]" *) => getChar (a,q) | |
9126 | | _ => do_subset (getChar (a,q)) | |
9127 | fun doit (c,a,q) = | |
9128 | case c | |
9129 | of 0wx00 => if isSpecial q then (c,a,q) else doit (getChar (a,q)) | |
9130 | | 0wx22 (* #"\""*) => doit (do_lit c (getChar (a,q))) | |
9131 | | 0wx25 (* #"%" *) => if hasSubset then (c,a,q) else doit (getChar (a,q)) | |
9132 | | 0wx27 (* #"'" *) => doit (do_lit c (getChar (a,q))) | |
9133 | | 0wx3C (* #"<" *) => (c,a,q) | |
9134 | | 0wx3E (* #">" *) => getChar (a,q) | |
9135 | | 0wx5B (* #"[" *) => if hasSubset then doit (do_subset (getChar (a,q))) | |
9136 | else doit (getChar (a,q)) | |
9137 | | _ => doit (getChar (a,q)) | |
9138 | in doit caq | |
9139 | end | |
9140 | ||
9141 | fun useParamEnts() = !O_VALIDATE orelse !O_INCLUDE_PARAM_ENTS | |
9142 | end | |
9143 | (* stop of ../../Parser/Parse/parseBase.sml *) | |
9144 | (* start of ../../Parser/Parse/parseNames.sml *) | |
9145 | ||
9146 | ||
9147 | ||
9148 | ||
9149 | ||
9150 | ||
9151 | ||
9152 | signature ParseNames = | |
9153 | sig | |
9154 | include ParseBase | |
9155 | ||
9156 | val parseName : UniChar.Char * AppData * State | |
9157 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
9158 | val parseNmtoken : UniChar.Char * AppData * State | |
9159 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
9160 | ||
9161 | val parseNameLit : UniChar.Data -> UniChar.Char * AppData * State | |
9162 | -> UniChar.Data * UniChar.Data * (UniChar.Char * AppData * State) | |
9163 | val parseEntName : UniChar.Data * UniChar.Data -> UniChar.Char * AppData * State | |
9164 | -> bool * UniChar.Data * UniChar.Data * (UniChar.Char * AppData * State) | |
9165 | end | |
9166 | ||
9167 | (*--------------------------------------------------------------------------*) | |
9168 | (* Structure: ParseNames *) | |
9169 | (* *) | |
9170 | (* Exceptions raised by functions in this structure: *) | |
9171 | (* parseEntName : none *) | |
9172 | (* parseName : NotFound *) | |
9173 | (* parseNmtoken : NotFound *) | |
9174 | (*--------------------------------------------------------------------------*) | |
9175 | functor ParseNames (structure ParseBase : ParseBase) | |
9176 | : ParseNames = | |
9177 | struct | |
9178 | open | |
9179 | Errors ParseBase UniClasses | |
9180 | ||
9181 | (*--------------------------------------------------------------------*) | |
9182 | (* parse (the remainder of) a name or nmtoken. *) | |
9183 | (* *) | |
9184 | (* [5] Name ::= (Letter | '_' | ':') (NameChar)* *) | |
9185 | (* *) | |
9186 | (* raise NotFound if no name/name start character comes first. *) | |
9187 | (* *) | |
9188 | (* return the name as a list of characters, together with the next *) | |
9189 | (* character and the remaining state. *) | |
9190 | (*--------------------------------------------------------------------*) | |
9191 | fun parseName' (c,a,q) = | |
9192 | if isName c | |
9193 | then let val (cs,caq1) = parseName'(getChar(a,q)) | |
9194 | in (c::cs,caq1) | |
9195 | end | |
9196 | else (nil,(c,a,q)) | |
9197 | fun parseName (c,a,q) = | |
9198 | if isNms c | |
9199 | then let val (cs,caq1) = parseName'(getChar(a,q)) | |
9200 | in (c::cs,caq1) | |
9201 | end | |
9202 | else raise NotFound(c,a,q) | |
9203 | fun parseNmtoken (c,a,q) = | |
9204 | if isName c | |
9205 | then let val (cs,caq1) = parseName'(getChar(a,q)) | |
9206 | in (c::cs,caq1) | |
9207 | end | |
9208 | else raise NotFound(c,a,q) | |
9209 | ||
9210 | (*--------------------------------------------------------------------*) | |
9211 | (* parse a name, additionally accumulating its characters in reverse *) | |
9212 | (* order to the first argument. *) | |
9213 | (* *) | |
9214 | (* raise NotFound if no name/name start character comes first. *) | |
9215 | (*--------------------------------------------------------------------*) | |
9216 | fun parseNameLit cs (c,a,q) = | |
9217 | let fun doit (cs,ns) (c,a,q) = | |
9218 | if isName c then doit (c::cs,c::ns) (getChar(a,q)) | |
9219 | else (cs,rev ns,(c,a,q)) | |
9220 | in | |
9221 | if isNms c then doit (c::cs,[c]) (getChar(a,q)) | |
9222 | else raise NotFound(c,a,q) | |
9223 | end | |
9224 | (*--------------------------------------------------------------------*) | |
9225 | (* parse a name, accumulating its reverse in the first arg text. This *) | |
9226 | (* is useful for parsing of entity values, where entity references *) | |
9227 | (* are parsed but bypassed, and must thus be accumulated together *) | |
9228 | (* the other literal text. *) | |
9229 | (* *) | |
9230 | (* print an error if no name/name start character comes first. *) | |
9231 | (* *) | |
9232 | (* return a boolean indicating whether a name was found, the reverse *) | |
9233 | (* name as a list of characters, concatenated with the text in the *) | |
9234 | (* first arg, together with the next character and remaining state. *) | |
9235 | (*--------------------------------------------------------------------*) | |
9236 | fun parseEntName (lit,text) (c,a,q) = | |
9237 | let | |
9238 | fun doit (lit,text) (c,a,q) = | |
9239 | if isName c then doit (c::lit,c::text) (getChar (a,q)) | |
9240 | else (true,lit,text,(c,a,q)) | |
9241 | in | |
9242 | if isNms c then doit (c::lit,c::text) (getChar (a,q)) | |
9243 | else let val a1 = hookError(a,(getPos q,ERR_EXPECTED(expAnEntName,[c]))) | |
9244 | in (false,lit,text,(c,a1,q)) | |
9245 | end | |
9246 | end | |
9247 | ||
9248 | end | |
9249 | ||
9250 | (* stop of ../../Parser/Parse/parseNames.sml *) | |
9251 | (* start of ../../Parser/Parse/parseMisc.sml *) | |
9252 | ||
9253 | ||
9254 | ||
9255 | ||
9256 | ||
9257 | ||
9258 | ||
9259 | ||
9260 | ||
9261 | ||
9262 | signature ParseMisc = | |
9263 | sig | |
9264 | (*---------------------------------------------------------------------- | |
9265 | include ParseBase | |
9266 | ||
9267 | val parseName : UniChar.Char * AppData * State | |
9268 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
9269 | val parseNmtoken : UniChar.Char * AppData * State | |
9270 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
9271 | val parseNameLit : UniChar.Data -> UniChar.Char * AppData * State | |
9272 | -> UniChar.Data * UniChar.Data * (UniChar.Char * AppData * State) | |
9273 | val parseEntName : UniChar.Data * UniChar.Data -> UniChar.Char * AppData * State | |
9274 | -> bool * UniChar.Data * UniChar.Data * (UniChar.Char * AppData * State) | |
9275 | ----------------------------------------------------------------------*) | |
9276 | include ParseNames | |
9277 | ||
9278 | val skipS : UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
9279 | val skipSopt : UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
9280 | val skipSmay : UniChar.Char * AppData * State -> bool * (UniChar.Char * AppData * State) | |
9281 | ||
9282 | val parseSopt : UniChar.Data -> UniChar.Char * AppData * State | |
9283 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
9284 | val parseSmay : UniChar.Data -> UniChar.Char * AppData * State | |
9285 | -> bool * (UniChar.Data * (UniChar.Char * AppData * State)) | |
9286 | ||
9287 | val skipEq : UniChar.Char * AppData * State | |
9288 | -> UniChar.Char * AppData * State | |
9289 | val parseEq : UniChar.Char * AppData * State | |
9290 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
9291 | ||
9292 | val parseComment : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
9293 | val parseProcInstr : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
9294 | end | |
9295 | ||
9296 | (*--------------------------------------------------------------------------*) | |
9297 | (* Structure: ParseMisc *) | |
9298 | (* *) | |
9299 | (* Exceptions raised by functions in this structure: *) | |
9300 | (* skipS : none *) | |
9301 | (* skipSopt : none *) | |
9302 | (* skipSmay : none *) | |
9303 | (* skipEq : SyntaxError *) | |
9304 | (* skipComment : none *) | |
9305 | (* parseComment : none *) | |
9306 | (* parseProcInstr : none *) | |
9307 | (*--------------------------------------------------------------------------*) | |
9308 | functor ParseMisc (structure ParseBase : ParseBase) | |
9309 | : ParseMisc = | |
9310 | struct | |
9311 | structure ParseNames = ParseNames (structure ParseBase = ParseBase) | |
9312 | ||
9313 | open | |
9314 | UniChar Errors ParseNames | |
9315 | ||
9316 | (*--------------------------------------------------------------------*) | |
9317 | (* parse a sequence of white space. 2.3: *) | |
9318 | (* *) | |
9319 | (* [3] S ::= (#x20 | #x9 | #xD | #xA)+ *) | |
9320 | (*--------------------------------------------------------------------*) | |
9321 | (* parse optional white space. *) | |
9322 | (*--------------------------------------------------------------------*) | |
9323 | (* Return type: Char * AppData * State *) | |
9324 | (*--------------------------------------------------------------------*) | |
9325 | fun skipSopt (c,a,q) = | |
9326 | case c | |
9327 | of 0wx09 => skipSopt (getChar (a,q)) | |
9328 | | 0wx0A => skipSopt (getChar (a,q)) | |
9329 | | 0wx20 => skipSopt (getChar (a,q)) | |
9330 | | _ => (c,a,q) | |
9331 | fun parseSopt cs (c,a,q) = | |
9332 | case c | |
9333 | of 0wx09 => parseSopt (c::cs) (getChar (a,q)) | |
9334 | | 0wx0A => parseSopt (c::cs) (getChar (a,q)) | |
9335 | | 0wx20 => parseSopt (c::cs) (getChar (a,q)) | |
9336 | | _ => (cs,(c,a,q)) | |
9337 | (*--------------------------------------------------------------------*) | |
9338 | (* parse optional white space. *) | |
9339 | (*--------------------------------------------------------------------*) | |
9340 | (* Return type: bool * (Char * AppData * State) *) | |
9341 | (* the bool indicates whether white space was found or not. *) | |
9342 | (*--------------------------------------------------------------------*) | |
9343 | fun skipSmay (c,a,q) = | |
9344 | case c | |
9345 | of 0wx09 => (true,skipSopt (getChar (a,q))) | |
9346 | | 0wx0A => (true,skipSopt (getChar (a,q))) | |
9347 | | 0wx20 => (true,skipSopt (getChar (a,q))) | |
9348 | | _ => (false,(c,a,q)) | |
9349 | fun parseSmay cs (c,a,q) = | |
9350 | case c | |
9351 | of 0wx09 => (true,parseSopt (c::cs) (getChar (a,q))) | |
9352 | | 0wx0A => (true,parseSopt (c::cs) (getChar (a,q))) | |
9353 | | 0wx20 => (true,parseSopt (c::cs) (getChar (a,q))) | |
9354 | | _ => (false,(cs,(c,a,q))) | |
9355 | (*--------------------------------------------------------------------*) | |
9356 | (* parse required white space. *) | |
9357 | (*--------------------------------------------------------------------*) | |
9358 | (* print an error if no white space character is found. *) | |
9359 | (*--------------------------------------------------------------------*) | |
9360 | (* Return type: Char * AppData * State *) | |
9361 | (*--------------------------------------------------------------------*) | |
9362 | fun skipS (c,a,q) = | |
9363 | case c | |
9364 | of 0wx09 => skipSopt (getChar (a,q)) | |
9365 | | 0wx0A => skipSopt (getChar (a,q)) | |
9366 | | 0wx20 => skipSopt (getChar (a,q)) | |
9367 | | _ => (c,hookError(a,(getPos q,ERR_MISSING_WHITE)),q) | |
9368 | ||
9369 | (*--------------------------------------------------------------------*) | |
9370 | (* parse a "=" together with surrounding white space. Cf. 28: *) | |
9371 | (* *) | |
9372 | (* [25] Eq ::= S? '=' S? *) | |
9373 | (*--------------------------------------------------------------------*) | |
9374 | (* Raises: *) | |
9375 | (* SyntaxError if no "=" is found. *) | |
9376 | (*--------------------------------------------------------------------*) | |
9377 | (* Return type: Char * AppData * State *) | |
9378 | (*--------------------------------------------------------------------*) | |
9379 | fun skipEq caq = | |
9380 | let val (c1,a1,q1) = skipSopt caq | |
9381 | in if c1=0wx3D then skipSopt (getChar (a1,q1)) | |
9382 | else let val a2 = hookError(a1,(getPos q1,ERR_EXPECTED(expEq,[c1]))) | |
9383 | in raise SyntaxError(c1,a2,q1) | |
9384 | end | |
9385 | end | |
9386 | fun parseEq caq = | |
9387 | let val (cs1,(c1,a1,q1)) = parseSopt nil caq | |
9388 | in if c1=0wx3D | |
9389 | then let val (cs2,caq2)= parseSopt (c1::cs1) (getChar (a1,q1)) | |
9390 | in (rev cs2,caq2) | |
9391 | end | |
9392 | else let val a2 = hookError(a1,(getPos q1,ERR_EXPECTED(expEq,[c1]))) | |
9393 | in raise SyntaxError(c1,a2,q1) | |
9394 | end | |
9395 | end | |
9396 | ||
9397 | (*--------------------------------------------------------------------*) | |
9398 | (* parse a comment, the initial "<--" already consumed. cf. 2.5: *) | |
9399 | (* *) | |
9400 | (* They are not part of the document's character data; an XML *) | |
9401 | (* processor may, but need not, make it possible for an application *) | |
9402 | (* to retrieve the text of comments. For compatibility, the string *) | |
9403 | (* "--" (double-hyphen) must not occur within comments. *) | |
9404 | (* *) | |
9405 | (* [15] Comment ::= '<!--' ( (Char - '-') *) | |
9406 | (* | ('-' (Char - '-')))* '-->' *) | |
9407 | (*--------------------------------------------------------------------*) | |
9408 | (* print an error and end the comment if an entity end is found. *) | |
9409 | (* print an error if the comment contains "--". *) | |
9410 | (*--------------------------------------------------------------------*) | |
9411 | (* add the comment to the user data. *) | |
9412 | (*--------------------------------------------------------------------*) | |
9413 | (* Return type: Char * AppData * State *) | |
9414 | (*--------------------------------------------------------------------*) | |
9415 | fun parseComment startPos aq = | |
9416 | let | |
9417 | fun check_end yet (a0,q0) = | |
9418 | let val (c,a,q) = getChar (a0,q0) | |
9419 | in if c=0wx2D (* #"-" *) | |
9420 | then let val (c1,a1,q1) = getChar (a,q) | |
9421 | in if c1=0wx3E (* #">" *) | |
9422 | then let val cs = Data2Vector(rev yet) | |
9423 | val a2 = hookComment(a1,((startPos,getPos q1),cs)) | |
9424 | in getChar(a2,q1) | |
9425 | end | |
9426 | else let val a2 = if not (!O_COMPATIBILITY) then a1 | |
9427 | else hookError(a1,(getPos q0,ERR_FORBIDDEN_HERE | |
9428 | (IT_DATA [c,c],LOC_COMMENT))) | |
9429 | in doit (c::c::yet) (c1,a2,q1) | |
9430 | end | |
9431 | end | |
9432 | else doit (0wx2D::yet) (c,a,q) | |
9433 | end | |
9434 | and doit yet (c,a,q) = | |
9435 | if c=0wx2D (* #"-" *) then check_end yet (a,q) | |
9436 | else if c<>0wx00 then doit (c::yet) (getChar (a,q)) | |
9437 | else let val err = ERR_ENDED_BY_EE LOC_COMMENT | |
9438 | val a1 = hookError(a,(getPos q,err)) | |
9439 | val cs = Data2Vector(rev yet) | |
9440 | val a2 = hookComment(a1,((startPos,getPos q),cs)) | |
9441 | in (c,a2,q) | |
9442 | end | |
9443 | in doit nil (getChar aq) | |
9444 | end | |
9445 | ||
9446 | (*--------------------------------------------------------------------*) | |
9447 | (* check whether a name matches "xml", disregarding case, cf. 2.6: *) | |
9448 | (* *) | |
9449 | (* [17] PITarget ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l')) *) | |
9450 | (* *) | |
9451 | (* The target names "XML", "xml", and so on are reserved for *) | |
9452 | (* standardization in this or future versions of this specification.*) | |
9453 | (*--------------------------------------------------------------------*) | |
9454 | (* print an error if it does match. *) | |
9455 | (*--------------------------------------------------------------------*) | |
9456 | (* Return type: AppData *) | |
9457 | (*--------------------------------------------------------------------*) | |
9458 | fun checkPiTarget (a,q) name = | |
9459 | case name | |
9460 | of [c1,c2,c3] => if ((c1=0wx58 orelse c1=0wx78) andalso | |
9461 | (c2=0wx4D orelse c2=0wx6D) andalso | |
9462 | (c3=0wx4C orelse c3=0wx6C)) | |
9463 | then hookError(a,(getPos q,ERR_RESERVED(name,IT_TARGET))) | |
9464 | else a | |
9465 | | _ => a | |
9466 | (*--------------------------------------------------------------------*) | |
9467 | (* parse a processing instruction, the initial "<?" and target *) | |
9468 | (* already consumed. cf. 2.5: *) | |
9469 | (* *) | |
9470 | (* [16] PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char* )))? '?>'*) | |
9471 | (* *) | |
9472 | (* The first arg consists of the target and the (reversed) list of *) | |
9473 | (* leading characters of the text that have been looked ahead. *) | |
9474 | (*--------------------------------------------------------------------*) | |
9475 | (* print an error and end the proc. instr. if an entity end is found. *) | |
9476 | (*--------------------------------------------------------------------*) | |
9477 | (* add the processing instruction to the user data. *) | |
9478 | (*--------------------------------------------------------------------*) | |
9479 | (* Return type: Char * AppData * State *) | |
9480 | (*--------------------------------------------------------------------*) | |
9481 | fun parseProcInstr' (startPos,target,txtPos,yetText) caq = | |
9482 | let | |
9483 | fun doit text (c1,a1,q1) = | |
9484 | case c1 | |
9485 | of 0wx00 => let val a2 = hookError(a1,(getPos q1,ERR_ENDED_BY_EE LOC_PROC)) | |
9486 | in (text,getPos q1,(c1,a2,q1)) | |
9487 | end | |
9488 | | 0wx3F => (* #"?" *) | |
9489 | let val (c2,a2,q2) = getChar (a1,q1) | |
9490 | in case c2 | |
9491 | of 0wx3E => (* #">" *) (text,getPos q2,getChar(a2,q2)) | |
9492 | | _ => doit (c1::text) (c2,a2,q2) | |
9493 | end | |
9494 | | _ => doit (c1::text) (getChar (a1,q1)) | |
9495 | ||
9496 | val (cs,endPos,(c2,a2,q2)) = doit yetText caq | |
9497 | val text = Data2Vector(rev cs) | |
9498 | val a3 = hookProcInst(a2,((startPos,endPos),target,txtPos,text)) | |
9499 | in | |
9500 | (c2,a3,q2) | |
9501 | end | |
9502 | (*--------------------------------------------------------------------*) | |
9503 | (* parse a processing instruction, the initial "<?" already read. *) | |
9504 | (* *) | |
9505 | (* [16] PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char* )))? '?>'*) | |
9506 | (*--------------------------------------------------------------------*) | |
9507 | (* print an error and end the proc. instr. if an entity end is found. *) | |
9508 | (* print an error if no target name is found. *) | |
9509 | (* print an error if no whitespace follows the target. *) | |
9510 | (*--------------------------------------------------------------------*) | |
9511 | (* add the processing instruction to the user data. *) | |
9512 | (*--------------------------------------------------------------------*) | |
9513 | (* Return type: Char * AppData * State *) | |
9514 | (*--------------------------------------------------------------------*) | |
9515 | fun parseProcInstr startPos (a,q) = | |
9516 | let | |
9517 | (* NotFound is handled after the 'in .. end' *) | |
9518 | val (target,(c1,a1,q1)) = parseName (getChar(a,q)) | |
9519 | val a1 = checkPiTarget (a1,q) target | |
9520 | in | |
9521 | case c1 | |
9522 | of 0wx00 => | |
9523 | let | |
9524 | val a2 = hookError(a1,(getPos q1,ERR_ENDED_BY_EE LOC_PROC)) | |
9525 | val a3 = hookProcInst(a2,((startPos,getPos q1),target,getPos q1,nullVector)) | |
9526 | in (c1,a3,q1) | |
9527 | end | |
9528 | | 0wx3F => (* #"?" *) | |
9529 | let val (c2,a2,q2) = getChar (a1,q1) | |
9530 | in case c2 | |
9531 | of 0wx3E => (* #">" *) | |
9532 | let val a3 = hookProcInst(a2,((startPos,getPos q2),target, | |
9533 | getPos q1,nullVector)) | |
9534 | in getChar (a3,q2) | |
9535 | end | |
9536 | | _ => let val a3 = hookError(a2,(getPos q1,ERR_MISSING_WHITE)) | |
9537 | in parseProcInstr' (startPos,target,getPos q1,[c1]) (c2,a3,q2) | |
9538 | end | |
9539 | end | |
9540 | | _ => let val (hadS,(c2,a2,q2)) = skipSmay (c1,a1,q1) | |
9541 | val a3 = if hadS then a2 | |
9542 | else hookError(a2,(getPos q2,ERR_MISSING_WHITE)) | |
9543 | in parseProcInstr' (startPos,target,getPos q2,nil) (c2,a3,q2) | |
9544 | end | |
9545 | end | |
9546 | handle NotFound(c,a,q) => | |
9547 | let val a1 = hookError(a,(getPos q,ERR_EXPECTED(expATarget,[c]))) | |
9548 | in parseProcInstr' (startPos,nullData,getPos q,nil) (c,a1,q) | |
9549 | end | |
9550 | end | |
9551 | (* stop of ../../Parser/Parse/parseMisc.sml *) | |
9552 | (* start of ../../Parser/Parse/parseXml.sml *) | |
9553 | signature ParseXml = | |
9554 | sig | |
9555 | (*---------------------------------------------------------------------- | |
9556 | include ParseBase | |
9557 | ||
9558 | val parseName : UniChar.Char * AppData * State | |
9559 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
9560 | val parseNmtoken : UniChar.Char * AppData * State | |
9561 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
9562 | val parseNameLit : UniChar.Data -> UniChar.Char * AppData * State | |
9563 | -> UniChar.Data * UniChar.Data * (UniChar.Char * AppData * State) | |
9564 | val parseEntName : UniChar.Data * UniChar.Data -> UniChar.Char * AppData * State | |
9565 | -> bool * UniChar.Data * UniChar.Data * (UniChar.Char * AppData * State) | |
9566 | ||
9567 | val parseComment : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
9568 | val parseProcInstr : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
9569 | val skipS : UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
9570 | val skipSopt : UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
9571 | val skipSmay : UniChar.Char * AppData * State -> bool * (UniChar.Char * AppData * State) | |
9572 | val parseSopt : UniChar.Data -> UniChar.Char * AppData * State | |
9573 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
9574 | val parseSmay : UniChar.Data -> UniChar.Char * AppData * State | |
9575 | -> bool * (UniChar.Data * (UniChar.Char * AppData * State)) | |
9576 | val parseEq : UniChar.Char * AppData * State | |
9577 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
9578 | ----------------------------------------------------------------------*) | |
9579 | include ParseMisc | |
9580 | ||
9581 | val openDocument : Uri.Uri option -> AppData | |
9582 | -> Encoding.Encoding * HookData.XmlDecl option * (UniChar.Char * AppData * State) | |
9583 | val openSubset : Uri.Uri -> AppData | |
9584 | -> Encoding.Encoding * HookData.TextDecl option * (UniChar.Char * AppData * State) | |
9585 | val openExtern : int * bool * Uri.Uri -> AppData * State | |
9586 | -> Encoding.Encoding * HookData.TextDecl option * (UniChar.Char * AppData * State) | |
9587 | end | |
9588 | ||
9589 | (*--------------------------------------------------------------------------*) | |
9590 | (* Structure: ParseXml *) | |
9591 | (* *) | |
9592 | (* Exceptions raised by functions in this structure: *) | |
9593 | (* openDocument : NoSuchFile *) | |
9594 | (* openExtern : none *) | |
9595 | (* openSubset : NoSuchFile *) | |
9596 | (*--------------------------------------------------------------------------*) | |
9597 | functor ParseXml (structure ParseBase : ParseBase) | |
9598 | : ParseXml = | |
9599 | struct | |
9600 | structure ParseMisc = ParseMisc (structure ParseBase = ParseBase) | |
9601 | ||
9602 | open | |
9603 | Errors UniChar UniClasses UtilString | |
9604 | ParseMisc | |
9605 | ||
9606 | fun checkVersionNum (a,q) version = | |
9607 | if not (!O_CHECK_VERSION) orelse version="1.0" then a | |
9608 | else hookError(a,(getPos q,ERR_VERSION version)) | |
9609 | ||
9610 | (*--------------------------------------------------------------------*) | |
9611 | (* parse a version number, the quote character ("'" or '"') passed as *) | |
9612 | (* first argument. cf. 2.8: *) | |
9613 | (* *) | |
9614 | (* [24] VersionInfo ::= S 'version' Eq (' VersionNum ' *) | |
9615 | (* | " VersionNum ") *) | |
9616 | (* [26] VersionNum ::= ([a-zA-Z0-9_.:] | '-')+ *) | |
9617 | (* *) | |
9618 | (* print an error and end the literal if an entity end is found. *) | |
9619 | (* print an error if a disallowed character is found. *) | |
9620 | (* *) | |
9621 | (* return the version number as a string option, together with the *) | |
9622 | (* next character and state. *) | |
9623 | (*--------------------------------------------------------------------*) | |
9624 | (* might raise: none *) | |
9625 | (*--------------------------------------------------------------------*) | |
9626 | fun parseVersionNum quote aq = | |
9627 | let | |
9628 | fun doit text (c,a,q) = | |
9629 | if c=quote then (text,getChar (a,q)) | |
9630 | else if isVers c then doit (c::text) (getChar (a,q)) | |
9631 | else if c=0wx0 | |
9632 | then let val a1 = hookError(a,(getPos q,ERR_ENDED_BY_EE LOC_VERSION)) | |
9633 | in (text,(c,a1,q)) | |
9634 | end | |
9635 | else let val err = ERR_FORBIDDEN_HERE(IT_CHAR c,LOC_VERSION) | |
9636 | val a1 = hookError(a,(getPos q,err)) | |
9637 | in doit text (getChar (a1,q)) | |
9638 | end | |
9639 | ||
9640 | val (c1,a1,q1) = getChar aq | |
9641 | ||
9642 | val (text,(c2,a2,q2)) = | |
9643 | if isVers c1 then doit [c1] (getChar (a1,q1)) | |
9644 | else if c1=quote | |
9645 | then let val a2 = hookError(a1,(getPos q1,ERR_EMPTY LOC_VERSION)) | |
9646 | in (nil,getChar (a2,q1)) | |
9647 | end | |
9648 | else if c1=0wx00 | |
9649 | then let val a2 = hookError(a1,(getPos q1,ERR_ENDED_BY_EE LOC_VERSION)) | |
9650 | val a3 = hookError(a2,(getPos q1,ERR_EMPTY LOC_VERSION)) | |
9651 | in (nil,(c1,a3,q1)) | |
9652 | end | |
9653 | else let val err = ERR_FORBIDDEN_HERE(IT_CHAR c1,LOC_VERSION) | |
9654 | val a2 = hookError(a1,(getPos q1,err)) | |
9655 | in doit nil (getChar (a2,q1)) | |
9656 | end | |
9657 | val version = Latin2String (rev text) | |
9658 | val a3 = checkVersionNum (a2,q1) version | |
9659 | in | |
9660 | (SOME version,(c2,a3,q2)) | |
9661 | end | |
9662 | (*--------------------------------------------------------------------*) | |
9663 | (* parse a version info starting after 'version'. Cf. 2.8: *) | |
9664 | (* *) | |
9665 | (* [24] VersionInfo ::= S 'version' Eq (' VersionNum ' *) | |
9666 | (* | " VersionNum ") *) | |
9667 | (* *) | |
9668 | (* print an error and raise SyntaxState if no '=' is found. *) | |
9669 | (* print an error and raise SyntaxState if no quote sign is found. *) | |
9670 | (* *) | |
9671 | (* return the version number as a string option, together with the *) | |
9672 | (* next char and the remaining state. *) | |
9673 | (*--------------------------------------------------------------------*) | |
9674 | (* might raise: SyntaxState *) | |
9675 | (*--------------------------------------------------------------------*) | |
9676 | fun parseVersionInfo caq = | |
9677 | let val (c1,a1,q1) = skipEq caq | |
9678 | in case c1 | |
9679 | of 0wx22 (* '""' *) => parseVersionNum c1 (a1,q1) | |
9680 | | 0wx27 (* "'" *) => parseVersionNum c1 (a1,q1) | |
9681 | | _ => let val a2 = hookError(a1,(getPos q1,ERR_EXPECTED(expLitQuote,[c1]))) | |
9682 | in raise SyntaxError(c1,a2,q1) | |
9683 | end | |
9684 | end | |
9685 | ||
9686 | (*--------------------------------------------------------------------*) | |
9687 | (* parse an encoding name, the quote character ("'" or '"') passed as *) | |
9688 | (* first argument. cf. 4.3.3: *) | |
9689 | (* *) | |
9690 | (* [80] EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' *) | |
9691 | (* |"'" EncName "'") *) | |
9692 | (* *) | |
9693 | (* [81] EncName ::= [A-Za-z] /* Encoding name *) | |
9694 | (* ([A-Za-z0-9._] | '-')* contains only Latin *) | |
9695 | (* characters */ *) | |
9696 | (* *) | |
9697 | (* print an error and end the literal if an entity end is found. *) | |
9698 | (* print an error if a disallowed character is found. *) | |
9699 | (* *) | |
9700 | (* return the encoding name as a string option, together with the *) | |
9701 | (* next character and state. *) | |
9702 | (*--------------------------------------------------------------------*) | |
9703 | (* might raise: none *) | |
9704 | (*--------------------------------------------------------------------*) | |
9705 | fun parseEncName quote aq = | |
9706 | let | |
9707 | fun doit text (c,a,q) = | |
9708 | if c=quote then (text,getChar (a,q)) | |
9709 | else if isEnc c then doit (c::text) (getChar (a,q)) | |
9710 | else if c=0wx00 | |
9711 | then let val a1 = hookError(a,(getPos q,ERR_ENDED_BY_EE LOC_ENCODING)) | |
9712 | in (text,(c,a1,q)) | |
9713 | end | |
9714 | else let val err = ERR_FORBIDDEN_HERE(IT_CHAR c,LOC_ENCODING) | |
9715 | val a1 = hookError(a,(getPos q,err)) | |
9716 | in doit text (getChar (a,q)) | |
9717 | end | |
9718 | ||
9719 | val (c1,a1,q1) = getChar aq | |
9720 | ||
9721 | val (text,caq2) = | |
9722 | if isEncS c1 then doit [c1] (getChar (a1,q1)) | |
9723 | else if c1=quote | |
9724 | then let val a2 = hookError(a1,(getPos q1,ERR_EMPTY LOC_ENCODING)) | |
9725 | in (nil,getChar (a2,q1)) | |
9726 | end | |
9727 | else if c1=0wx00 | |
9728 | then let val a2 = hookError(a1,(getPos q1,ERR_ENDED_BY_EE LOC_ENCODING)) | |
9729 | val a3 = hookError(a2,(getPos q1,ERR_EMPTY LOC_ENCODING)) | |
9730 | in (nil,(c1,a3,q1)) | |
9731 | end | |
9732 | else let val a2 = hookError(a1,(getPos q1,ERR_EXPECTED(expStartEnc,[c1]))) | |
9733 | in doit nil (getChar (a2,q1)) | |
9734 | end | |
9735 | ||
9736 | val enc = toUpperString (Latin2String (rev text)) | |
9737 | in | |
9738 | (enc,caq2) | |
9739 | end | |
9740 | (*--------------------------------------------------------------------*) | |
9741 | (* parse an encoding decl starting after 'encoding'. Cf. 4.3.3: *) | |
9742 | (* *) | |
9743 | (* *) | |
9744 | (* [80] EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' *) | |
9745 | (* |"'" EncName "'") *) | |
9746 | (* *) | |
9747 | (* print an error and raise SyntaxState if no '=' is found. *) | |
9748 | (* print an error and raise SyntaxState if no quote sign is found. *) | |
9749 | (* *) | |
9750 | (* return the encoding name as a string option, together with the *) | |
9751 | (* next char and the remaining state. *) | |
9752 | (*--------------------------------------------------------------------*) | |
9753 | (* might raise: SyntaxState *) | |
9754 | (*--------------------------------------------------------------------*) | |
9755 | fun parseEncodingDecl caq = | |
9756 | let val (c1,a1,q1) = skipEq caq | |
9757 | in case c1 | |
9758 | of 0wx22 (* '""' *) => parseEncName c1 (a1,q1) | |
9759 | | 0wx27 (* "'" *) => parseEncName c1 (a1,q1) | |
9760 | | _ => let val a2 = hookError(a1,(getPos q1,ERR_EXPECTED(expLitQuote,[c1]))) | |
9761 | in raise SyntaxError(c1,a2,q1) | |
9762 | end | |
9763 | end | |
9764 | ||
9765 | (*--------------------------------------------------------------------*) | |
9766 | (* parse a standalone declaration starting after 'standalone'. *) | |
9767 | (* Cf. 2.9: *) | |
9768 | (* *) | |
9769 | (* [32] SDDecl ::= S 'standalone' Eq [ VC: Standalone *) | |
9770 | (* ( ("'" ('yes' | 'no') "'") Document *) | |
9771 | (* | ('"' ('yes' | 'no') '"')) Declaration ] *) | |
9772 | (* *) | |
9773 | (* print an error and raise SyntaxState if no '=' is found. *) | |
9774 | (* print an error and raise SyntaxState if no literal is found. *) | |
9775 | (* print an error and end the literal if an entity end is found. *) | |
9776 | (* print an error if the literal is neither 'yes' nor 'no'. *) | |
9777 | (* *) | |
9778 | (* return the standalone status as a boolean option, together with *) | |
9779 | (* the next character and the remaining state. *) | |
9780 | (*--------------------------------------------------------------------*) | |
9781 | (* might raise: SyntaxState *) | |
9782 | (*--------------------------------------------------------------------*) | |
9783 | fun parseStandaloneDecl caq0 = | |
9784 | let | |
9785 | val (quote,a,q) = skipEq caq0 | |
9786 | ||
9787 | fun doit text (c,a,q) = | |
9788 | if c=quote then (text,getChar (a,q)) | |
9789 | else if c<>0wx0 then doit (c::text) (getChar (a,q)) | |
9790 | else let val a1 = hookError(a,(getPos q,ERR_ENDED_BY_EE LOC_LITERAL)) | |
9791 | in (text,(c,a1,q)) | |
9792 | end | |
9793 | ||
9794 | val caq1 as (_,_,q1) = | |
9795 | case quote | |
9796 | of 0wx22 (* '""' *) => (getChar (a,q)) | |
9797 | | 0wx27 (* "'" *) => (getChar (a,q)) | |
9798 | | _ => let val a1 = hookError(a,(getPos q,ERR_EXPECTED(expLitQuote,[quote]))) | |
9799 | in raise SyntaxError(quote,a1,q) | |
9800 | end | |
9801 | val (text,caq2) = doit nil caq1 | |
9802 | in | |
9803 | case text | |
9804 | of [0wx73,0wx65,0wx79] (* reversed "yes" *) => (SOME true,caq2) | |
9805 | | [0wx6f,0wx6e] (* reversed "no" *) => (SOME false,caq2) | |
9806 | | revd => let val (c2,a2,q2) = caq2 | |
9807 | val a3 = hookError(a2,(getPos q1,ERR_EXPECTED(expNoYes,revd))) | |
9808 | in (NONE,(c2,a3,q2)) | |
9809 | end | |
9810 | end | |
9811 | ||
9812 | (*--------------------------------------------------------------------*) | |
9813 | (* parse an xml declaration starting after 'xml ' (i.e. the first *) | |
9814 | (* white space character is already consumed). Cf. 2.8: *) | |
9815 | (* *) | |
9816 | (* [23] XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S?'?>'*) | |
9817 | (* *) | |
9818 | (* [24] VersionInfo ::= S 'version' Eq (' VersionNum ' *) | |
9819 | (* | " VersionNum ") *) | |
9820 | (* *) | |
9821 | (* [32] SDDecl ::= S 'standalone' Eq [ VC: Standalone *) | |
9822 | (* ( ("'" ('yes' | 'no') "'") Document *) | |
9823 | (* | ('"' ('yes' | 'no') '"')) Declaration ] *) | |
9824 | (* *) | |
9825 | (* [80] EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' *) | |
9826 | (* |"'" EncName "'") *) | |
9827 | (* *) | |
9828 | (* default version, encoding and standalone status to NONE. *) | |
9829 | (* *) | |
9830 | (* print an error if no leading white space is found. *) | |
9831 | (* print an error whenever a wrong name is encountered. *) | |
9832 | (* print an Error if no VersionInfo is found. *) | |
9833 | (* print an Error if no '?>' is found at the end. *) | |
9834 | (* print an error and raise SyntaxState if no '=' or no literal is *) | |
9835 | (* found in VersionInfo, EncodingDecl or SDDecl. *) | |
9836 | (* print an error if a literal does not have a correct value. *) | |
9837 | (* *) | |
9838 | (* return the corresponding XmlDecl option and the next char & state. *) | |
9839 | (*--------------------------------------------------------------------*) | |
9840 | (* might raise: SyntaxState *) | |
9841 | (*--------------------------------------------------------------------*) | |
9842 | fun parseXmlDecl auto caq = | |
9843 | let | |
9844 | (*-----------------------------------------------------------------*) | |
9845 | (* skip the '?>' at the end of the xml declaration. *) | |
9846 | (* *) | |
9847 | (* print an error and raise SyntaxState if no '?>' is found. *) | |
9848 | (* *) | |
9849 | (* return the info passed as first arg, and the next char & state. *) | |
9850 | (*-----------------------------------------------------------------*) | |
9851 | (* might raise: SyntaxState *) | |
9852 | (*-----------------------------------------------------------------*) | |
9853 | fun skipXmlDeclEnd enc res (c,a,q) = | |
9854 | if c=0wx3F (* "#?" *) | |
9855 | then let val (c1,a1,q1) = getChar (a,q) | |
9856 | in if c1=0wx3E (* #">" *) then (enc,SOME res,getChar (a1,q1)) | |
9857 | else let val a2 = hookError(a1,(getPos q1,ERR_EXPECTED(expGt,[c1]))) | |
9858 | in raise SyntaxError (c1,a2,q1) | |
9859 | end | |
9860 | end | |
9861 | else let val a1 = hookError(a,(getPos q,ERR_EXPECTED(expProcEnd,[c]))) | |
9862 | in raise SyntaxError (c,a1,q) | |
9863 | end | |
9864 | (*-----------------------------------------------------------------*) | |
9865 | (* parse the remainder after the keyword 'standalone', the version *) | |
9866 | (* and encoding already parsed and given in the first arg. *) | |
9867 | (* *) | |
9868 | (* pass the version,encoding and sd status to skipXmlDeclEnd *) | |
9869 | (*-----------------------------------------------------------------*) | |
9870 | (* might raise: SyntaxState *) | |
9871 | (*-----------------------------------------------------------------*) | |
9872 | fun parseXmlDeclAfterS enc (v,e) caq = | |
9873 | let | |
9874 | val (alone,caq1) = parseStandaloneDecl caq | |
9875 | val caq2 = skipSopt caq1 | |
9876 | in skipXmlDeclEnd enc (v,e,alone) caq2 | |
9877 | end | |
9878 | (*-----------------------------------------------------------------*) | |
9879 | (* parse the remainder after the encoding declaration, the version *) | |
9880 | (* and encoding already parsed and given in the first arg. *) | |
9881 | (* *) | |
9882 | (* print an error if a name other than 'standalone' is found. *) | |
9883 | (* *) | |
9884 | (* pass the version and encoding to parseXmlDeclAfterS. *) | |
9885 | (*-----------------------------------------------------------------*) | |
9886 | (* might raise: SyntaxState *) | |
9887 | (*-----------------------------------------------------------------*) | |
9888 | fun parseXmlDeclBeforeS enc (v,e) caq = | |
9889 | let | |
9890 | val (hadS,caq1 as (_,_,q1)) = skipSmay caq | |
9891 | val (name,(c2,a2,q2)) = parseName caq1 (* NotFound handled below *) | |
9892 | val a3 = if hadS then a2 | |
9893 | else hookError(a2,(getPos q1,ERR_MISSING_WHITE)) | |
9894 | in case name | |
9895 | of [0wx73,0wx74,0wx61,0wx6e,0wx64,0wx61,0wx6c,0wx6f,0wx6e,0wx65] => | |
9896 | (* "standalone" *) parseXmlDeclAfterS enc (v,e) (c2,a3,q2) | |
9897 | | _ => let val a4 = hookError(a3,(getPos q1,ERR_EXPECTED(expStandOpt,name))) | |
9898 | in parseXmlDeclAfterS enc (v,e) (c2,a4,q2) | |
9899 | end | |
9900 | end | |
9901 | handle NotFound caq => (* exception raised by parseName *) | |
9902 | skipXmlDeclEnd enc (v,e,NONE) caq | |
9903 | (*-----------------------------------------------------------------*) | |
9904 | (* parse the remainder after the keyword 'encoding', the version *) | |
9905 | (* already parsed and given in the first arg. *) | |
9906 | (* *) | |
9907 | (* pass the version and encoding and to parseXmlDeclBeforeS *) | |
9908 | (*-----------------------------------------------------------------*) | |
9909 | (* might raise: SyntaxState *) | |
9910 | (*-----------------------------------------------------------------*) | |
9911 | fun parseXmlDeclAfterE ver caq = | |
9912 | let | |
9913 | val (enc,(c1,a1,q1)) = parseEncodingDecl caq | |
9914 | val (a2,q2,enc1) = changeAuto(a1,q1,enc) | |
9915 | in | |
9916 | parseXmlDeclBeforeS enc1 (ver,SOME enc) (c1,a2,q2) | |
9917 | end | |
9918 | (*-----------------------------------------------------------------*) | |
9919 | (* parse the remainder after the version info, the version already *) | |
9920 | (* parsed and given in the first arg. *) | |
9921 | (* *) | |
9922 | (* print an error if a name other than 'encoding' or 'standalone' *) | |
9923 | (* is found. *) | |
9924 | (* *) | |
9925 | (* pass obtained/default values to parseXmlDeclAfter[E|S] or to *) | |
9926 | (* skipXmlDeclEnd. *) | |
9927 | (*-----------------------------------------------------------------*) | |
9928 | (* might raise: SyntaxState *) | |
9929 | (*-----------------------------------------------------------------*) | |
9930 | fun parseXmlDeclBeforeE ver caq = | |
9931 | let | |
9932 | val (hadS,caq1 as (_,_,q1)) = skipSmay caq | |
9933 | val (name,(c2,a2,q2)) = parseName caq1 (* NotFound handled below *) | |
9934 | val a3 = if hadS then a2 | |
9935 | else hookError(a2,(getPos q1,ERR_MISSING_WHITE)) | |
9936 | in | |
9937 | case name | |
9938 | of [0wx65,0wx6e,0wx63,0wx6f,0wx64,0wx69,0wx6e,0wx67] => | |
9939 | (* "encoding" *) parseXmlDeclAfterE ver (c2,a3,q2) | |
9940 | | [0wx73,0wx74,0wx61,0wx6e,0wx64,0wx61,0wx6c,0wx6f,0wx6e,0wx65] => | |
9941 | (* "standalone" *) parseXmlDeclAfterS auto (ver,NONE) (c2,a3,q2) | |
9942 | | _ => let val a4 = hookError(a3,(getPos q1,ERR_EXPECTED(expEncStand,name))) | |
9943 | in parseXmlDeclAfterE ver (c2,a4,q2) | |
9944 | end | |
9945 | end | |
9946 | handle NotFound caq => (* exception raised by parseName *) | |
9947 | skipXmlDeclEnd auto (ver,NONE,NONE) caq | |
9948 | ||
9949 | (*-----------------------------------------------------------------*) | |
9950 | (* do the main work. if the first name is not 'version' then it *) | |
9951 | (* might be 'encoding' or 'standalone'. Then take the default *) | |
9952 | (* NONE for version and - if needed - encoding and call the *) | |
9953 | (* appropriate function. otherwise assume a typo and parse the *) | |
9954 | (* version number, then call parseXmlDeclBeforeE. if no name is *) | |
9955 | (* found at all, proceed with skipXmlDeclEnd. *) | |
9956 | (* *) | |
9957 | (* print an error and raise SyntaxState if an entity end is found. *) | |
9958 | (* print an error and raise SyntaxState if appropriate. *) | |
9959 | (* print an error if a name other than 'version' is found. *) | |
9960 | (*-----------------------------------------------------------------*) | |
9961 | (* might raise: SyntaxState *) | |
9962 | (*-----------------------------------------------------------------*) | |
9963 | val caq1 as (_,_,q1) = skipSopt caq | |
9964 | val (name,(caq2 as (c2,a2,q2))) = parseName caq1 | |
9965 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expVersion,[c]) | |
9966 | val a1 = hookError(a,(getPos q,err)) | |
9967 | in raise SyntaxError (c,a1,q) | |
9968 | end | |
9969 | in | |
9970 | if name=[0wx76,0wx65,0wx72,0wx73,0wx69,0wx6f,0wx6e] (* "version" *) | |
9971 | then let val (ver,caq3) = parseVersionInfo caq2 | |
9972 | in parseXmlDeclBeforeE ver caq3 | |
9973 | end | |
9974 | else let val a3 = hookError(a2,(getPos q1,ERR_EXPECTED(expVersion,name))) | |
9975 | in case name | |
9976 | of [0wx65,0wx6e,0wx63,0wx6f,0wx64,0wx69,0wx6e,0wx67] => | |
9977 | (* "encoding" *) parseXmlDeclAfterE NONE (c2,a3,q2) | |
9978 | | [0wx73,0wx74,0wx61,0wx6e,0wx64,0wx61,0wx6c,0wx6f,0wx6e,0wx65] => | |
9979 | (* "standalone" *) parseXmlDeclAfterS auto (NONE,NONE) (c2,a3,q2) | |
9980 | | _ => let val (ver,caq3) = parseVersionInfo (c2,a3,q2) | |
9981 | in parseXmlDeclBeforeE ver caq3 | |
9982 | end | |
9983 | end | |
9984 | end | |
9985 | (*----------------------------------------------------------------*) | |
9986 | (* catch entity end exceptions raised by subfunctions, print an *) | |
9987 | (* error and re-raise the exception. *) | |
9988 | (*----------------------------------------------------------------*) | |
9989 | handle SyntaxError(c,a,q) => | |
9990 | let val err = if c=0wx0 then ERR_ENDED_BY_EE LOC_XML_DECL | |
9991 | else ERR_CANT_PARSE LOC_XML_DECL | |
9992 | val a1 = hookError(a,(getPos q,err)) | |
9993 | in (auto,NONE,recoverXml(c,a1,q)) | |
9994 | end | |
9995 | ||
9996 | (*--------------------------------------------------------------------*) | |
9997 | (* parse a text declaration starting after 'xml ' (i.e. the first *) | |
9998 | (* white space character is already consumed). Cf. 2.8: *) | |
9999 | (* *) | |
10000 | (* [77] TextDecl ::= '<?xml' VersionInfo? EncodingDecl S? '?>' *) | |
10001 | (* *) | |
10002 | (* [24] VersionInfo ::= S 'version' Eq (' VersionNum ' *) | |
10003 | (* | " VersionNum ") *) | |
10004 | (* *) | |
10005 | (* [80] EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' *) | |
10006 | (* |"'" EncName "'") *) | |
10007 | (* *) | |
10008 | (* default version and encoding to NONE. *) | |
10009 | (* *) | |
10010 | (* print an error if no leading white space is found. *) | |
10011 | (* print an error whenever a wrong name is encountered. *) | |
10012 | (* print an Error if no EncodingDecl is found. *) | |
10013 | (* print an Error if '?>' is found at the end. *) | |
10014 | (* print an error and raise SyntaxState if no '=' or no literal is *) | |
10015 | (* found in VersionInfo or EncodingDecl. *) | |
10016 | (* print an error if a literal does not have a correct value. *) | |
10017 | (* *) | |
10018 | (* return the corresponding TextDecl option and the next char & state.*) | |
10019 | (*--------------------------------------------------------------------*) | |
10020 | (* might raise: SyntaxState *) | |
10021 | (*--------------------------------------------------------------------*) | |
10022 | fun parseTextDecl auto caq = | |
10023 | let | |
10024 | (*-----------------------------------------------------------------*) | |
10025 | (* skip the '?>' at the end of the text declaration. *) | |
10026 | (* *) | |
10027 | (* print an error and raise SyntaxState if no '?>' is found. *) | |
10028 | (* *) | |
10029 | (* return the info passed as first arg, and the next char & state. *) | |
10030 | (*-----------------------------------------------------------------*) | |
10031 | (* might raise: SyntaxState *) | |
10032 | (*-----------------------------------------------------------------*) | |
10033 | fun skipTextDeclEnd enc res (c,a,q) = | |
10034 | if c=0wx3F (* "#?" *) | |
10035 | then let val (c1,a1,q1) = getChar (a,q) | |
10036 | in if c1=0wx3E (* #">" *) then (enc,SOME res,getChar (a1,q1)) | |
10037 | else let val a2 = hookError(a1,(getPos q1,ERR_EXPECTED(expGt,[c1]))) | |
10038 | in raise SyntaxError(c1,a2,q1) | |
10039 | end | |
10040 | end | |
10041 | else let val a1 = hookError(a,(getPos q,ERR_EXPECTED(expProcEnd,[c]))) | |
10042 | in raise SyntaxError(c,a1,q) | |
10043 | end | |
10044 | (*-----------------------------------------------------------------*) | |
10045 | (* parse the remainder after the keyword 'encoding', the version *) | |
10046 | (* already parsed and given in the first arg. *) | |
10047 | (* *) | |
10048 | (* pass the version and encoding and to skipTextDeclEnd. *) | |
10049 | (*-----------------------------------------------------------------*) | |
10050 | (* might raise: SyntaxState *) | |
10051 | (*-----------------------------------------------------------------*) | |
10052 | fun parseTextDeclAfterE ver caq = | |
10053 | let | |
10054 | val (enc,(c1,a1,q1)) = parseEncodingDecl caq | |
10055 | val (a2,q2,enc1) = changeAuto(a1,q1,enc) | |
10056 | val caq3 = skipSopt (c1,a2,q2) | |
10057 | in skipTextDeclEnd enc1 (ver,SOME enc) caq3 | |
10058 | end | |
10059 | (*-----------------------------------------------------------------*) | |
10060 | (* parse the remainder after the version info, the version given *) | |
10061 | (* as first argument. *) | |
10062 | (* *) | |
10063 | (* print an error and raise SyntaxState is no name is found. *) | |
10064 | (* print an error if a name other than 'encoding' is found. *) | |
10065 | (* *) | |
10066 | (* pass obtained/default values to parseTextDeclAfterE. *) | |
10067 | (*-----------------------------------------------------------------*) | |
10068 | (* might raise: SyntaxState *) | |
10069 | (*-----------------------------------------------------------------*) | |
10070 | fun parseTextDeclBeforeE ver caq = | |
10071 | let | |
10072 | val caq1 as (_,_,q1) = skipS caq | |
10073 | val (name,caq2) = parseName caq1 | |
10074 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expEncoding,[c]) | |
10075 | val a1 = hookError(a,(getPos q,err)) | |
10076 | in raise SyntaxError (c,a1,q) | |
10077 | end | |
10078 | in | |
10079 | if name=[0wx65,0wx6e,0wx63,0wx6f,0wx64,0wx69,0wx6e,0wx67] (* "encoding" *) | |
10080 | then parseTextDeclAfterE ver caq2 | |
10081 | else let val (c2,a2,q2) = caq2 | |
10082 | val a3 = hookError(a2,(getPos q1,ERR_EXPECTED(expEncoding,name))) | |
10083 | in parseTextDeclAfterE ver (c2,a3,q2) | |
10084 | end | |
10085 | end | |
10086 | (*-----------------------------------------------------------------*) | |
10087 | (* do the main work. if the first name is neither 'version' nor *) | |
10088 | (* 'encoding' then assume typo of 'version'. Then parse the *) | |
10089 | (* version number, call parseTextDeclBeforeE. if no name is found *) | |
10090 | (* at all, proceed with skipTextDeclEnd. *) | |
10091 | (* *) | |
10092 | (* print an error and raise SyntaxState if appropriate. *) | |
10093 | (* print an error if a name other than 'version' or 'encoding' is *) | |
10094 | (* found. *) | |
10095 | (*-----------------------------------------------------------------*) | |
10096 | (* might raise: SyntaxState *) | |
10097 | (*-----------------------------------------------------------------*) | |
10098 | val caq1 as (_,_,q1) = skipSopt caq | |
10099 | val (name,caq2) = parseName caq1 | |
10100 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expEncVers,[c]) | |
10101 | val a1 = hookError(a,(getPos q,err)) | |
10102 | in raise SyntaxError(c,a1,q) | |
10103 | end | |
10104 | in case name | |
10105 | of [0wx76,0wx65,0wx72,0wx73,0wx69,0wx6f,0wx6e] => (* "version" *) | |
10106 | let val (ver,caq3) = parseVersionInfo caq2 | |
10107 | in parseTextDeclBeforeE ver caq3 | |
10108 | end | |
10109 | | [0wx65,0wx6e,0wx63,0wx6f,0wx64,0wx69,0wx6e,0wx67] => (* "encoding" *) | |
10110 | parseTextDeclAfterE NONE caq2 | |
10111 | | _ => let val (c2,a2,q2) = caq2 | |
10112 | val a3 = hookError(a2,(getPos q1,ERR_EXPECTED(expEncVers,name))) | |
10113 | val (ver,caq3) = parseVersionInfo (c2,a3,q2) | |
10114 | in parseTextDeclBeforeE ver caq3 | |
10115 | end | |
10116 | end | |
10117 | (*----------------------------------------------------------------*) | |
10118 | (* catch entity end exceptions raised by subfunctions, print an *) | |
10119 | (* error and re-raise the exception. *) | |
10120 | (*----------------------------------------------------------------*) | |
10121 | handle SyntaxError(c,a,q) => | |
10122 | let val err = if c=0wx0 then ERR_ENDED_BY_EE LOC_TEXT_DECL | |
10123 | else ERR_CANT_PARSE LOC_TEXT_DECL | |
10124 | val a1 = hookError(a,(getPos q,err)) | |
10125 | in (auto,NONE,recoverXml(c,a1,q)) | |
10126 | end | |
10127 | ||
10128 | (*--------------------------------------------------------------------*) | |
10129 | (* check for the string "<?xml" followed by a white space. The first *) | |
10130 | (* paramter seen is a prefix of that string already consued. If the *) | |
10131 | (* complete string is not found, unget all characters seen, including *) | |
10132 | (* those from parameter seen. *) | |
10133 | (* *) | |
10134 | (* return a boolean indicating wheher the string was found, together *) | |
10135 | (* with the remaining app data and state. *) | |
10136 | (*--------------------------------------------------------------------*) | |
10137 | (* might raise: none *) | |
10138 | (*--------------------------------------------------------------------*) | |
10139 | fun checkForXml aq = | |
10140 | let | |
10141 | val unseen = [0wx3c,0wx3f,0wx78,0wx6d,0wx6c] | |
10142 | fun doit (seen,unseen) (a,q) = | |
10143 | let val (c1,a1,q1) = getChar (a,q) | |
10144 | in case unseen | |
10145 | of nil => if isS c1 then (true,(a1,q1)) | |
10146 | else (false,(a1,ungetChars(q1,rev(c1::seen)))) | |
10147 | | c::cs => if c1=c then doit (c1::seen,cs) (a1,q1) | |
10148 | else (false,(a1,ungetChars(q1,rev(c1::seen)))) | |
10149 | end | |
10150 | in doit (nil,unseen) aq | |
10151 | end | |
10152 | ||
10153 | (*--------------------------------------------------------------------*) | |
10154 | (* consume the text/xml declaration. The first parameter is a pair of *) | |
10155 | (* the function that parses the declaration and a boolean indicating *) | |
10156 | (* whether a warning should we produced if the declaration is missing.*) | |
10157 | (* The second parameter is a pair (seen,auto), where auto is the *) | |
10158 | (* auto-detected encoding, and seen is SOME cs, if auto-detection *) | |
10159 | (* found some initial characters cs of the string "<?xml", otherwise *) | |
10160 | (* NONE. A text/xml declaration can only be present if seen is SOME. *) | |
10161 | (* *) | |
10162 | (* Check whether the declaration is present with checkForXml. If yes, *) | |
10163 | (* parse it, if no, possibly print a warning. *) | |
10164 | (* *) | |
10165 | (* Return the encoding of the entity, the optional declaration and *) | |
10166 | (* the next char, app data and state. *) | |
10167 | (*--------------------------------------------------------------------*) | |
10168 | fun findTextDecl (parseDecl,warn) auto aq = | |
10169 | let val (hasXml,aq1) = checkForXml aq | |
10170 | in if hasXml then parseDecl auto (getChar aq1) | |
10171 | else let val (a1,q1) = aq1 | |
10172 | val (a2,q2) = commitAuto(a1,q1) | |
10173 | val a3 = if warn then hookWarning(a2,(getPos q2,WARN_NO_XML_DECL)) else a2 | |
10174 | in (auto,NONE,getChar(a3,q2)) | |
10175 | end | |
10176 | end | |
10177 | ||
10178 | (*--------------------------------------------------------------------*) | |
10179 | (* open an external entity; consume its text declaration if present. *) | |
10180 | (* See 4.3.2: *) | |
10181 | (* *) | |
10182 | (* [78] extParsedEnt ::= TextDecl? content *) | |
10183 | (* [79] extPE ::= TextDecl? extSubsetDecl *) | |
10184 | (* *) | |
10185 | (* handle NoSuchFile by printing an error and opening an empty dummy *) | |
10186 | (* entity (some functions might rely on the entity's entity end). *) | |
10187 | (* *) | |
10188 | (* return the optional text declaration and the resulting first char *) | |
10189 | (* together with the new state. *) | |
10190 | (*--------------------------------------------------------------------*) | |
10191 | (* might raise: none *) | |
10192 | (*--------------------------------------------------------------------*) | |
10193 | fun openExtern (id,isParam,uri) (a,q) = | |
10194 | let val (q1,auto) = pushExtern (q,id,isParam,uri) | |
10195 | in findTextDecl (parseTextDecl,false) auto (a,q1) | |
10196 | end | |
10197 | handle NoSuchFile fmsg => raise CantOpenFile(fmsg,a) | |
10198 | ||
10199 | (*--------------------------------------------------------------------*) | |
10200 | (* open the external subset; consume its text declaration if present. *) | |
10201 | (* See 2.8: *) | |
10202 | (* *) | |
10203 | (* [30] extSubset ::= TextDecl? extSubsetDecl *) | |
10204 | (* *) | |
10205 | (* return the optional text declaration and the first char and state. *) | |
10206 | (*--------------------------------------------------------------------*) | |
10207 | (* might raise: NoSuchFile *) | |
10208 | (*--------------------------------------------------------------------*) | |
10209 | fun openSubset uri a = | |
10210 | let val (q,auto) = pushSpecial (EXT_SUBSET,SOME uri) | |
10211 | in findTextDecl (parseTextDecl,false) auto (a,q) | |
10212 | end | |
10213 | handle NoSuchFile fmsg => raise CantOpenFile(fmsg,a) | |
10214 | ||
10215 | (*--------------------------------------------------------------------*) | |
10216 | (* open the document entity; consume its xml declaration if present. *) | |
10217 | (* See 2.8: *) | |
10218 | (* *) | |
10219 | (* [1] document ::= prolog element Misc* *) | |
10220 | (* [22] prolog ::= XMLDecl? Misc* (doctypedecl Misc* )? *) | |
10221 | (* *) | |
10222 | (* return the optional xml declaration and the first char and state. *) | |
10223 | (*--------------------------------------------------------------------*) | |
10224 | (* might raise: NoSuchFile *) | |
10225 | (*--------------------------------------------------------------------*) | |
10226 | fun openDocument uri a = | |
10227 | let val (q,auto) = pushSpecial (DOC_ENTITY,uri) | |
10228 | in findTextDecl (parseXmlDecl,!O_WARN_XML_DECL) auto (a,q) | |
10229 | end | |
10230 | handle NoSuchFile fmsg => raise CantOpenFile(fmsg,a) | |
10231 | end | |
10232 | (* stop of ../../Parser/Parse/parseXml.sml *) | |
10233 | (* start of ../../Parser/Parse/parseRefs.sml *) | |
10234 | signature ParseRefs = | |
10235 | sig | |
10236 | (*---------------------------------------------------------------------- | |
10237 | include ParseBase | |
10238 | ||
10239 | val parseName : UniChar.Char * AppData * State | |
10240 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
10241 | val parseNmtoken : UniChar.Char * AppData * State | |
10242 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
10243 | val parseEntName : UniChar.Data * UniChar.Data -> UniChar.Char * AppData * State | |
10244 | -> bool * UniChar.Data * UniChar.Data * (UniChar.Char * AppData * State) | |
10245 | ||
10246 | val parseComment : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
10247 | val parseProcInstr : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
10248 | val skipS : UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
10249 | val skipSopt : UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
10250 | val skipSmay : UniChar.Char * AppData * State -> bool * (UniChar.Char * AppData * State) | |
10251 | val parseSopt : UniChar.Data -> UniChar.Char * AppData * State | |
10252 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
10253 | val parseSmay : UniChar.Data -> UniChar.Char * AppData * State | |
10254 | -> bool * (UniChar.Data * (UniChar.Char * AppData * State)) | |
10255 | val parseEq : UniChar.Char * AppData * State | |
10256 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
10257 | ||
10258 | val openExtern : int * Uri.Uri -> AppData * State | |
10259 | -> Encoding.Encoding * HookData.TextDecl option * (UniChar.Char * AppData * State) | |
10260 | val openDocument : Uri.Uri option -> AppData | |
10261 | -> Encoding.Encoding * HookData.XmlDecl option * (UniChar.Char * AppData * State) | |
10262 | val openSubset : Uri.Uri -> AppData | |
10263 | -> Encoding.Encoding * HookData.TextDecl option * (UniChar.Char * AppData * State) | |
10264 | ----------------------------------------------------------------------*) | |
10265 | include ParseXml | |
10266 | ||
10267 | val parseCharRef : AppData * State -> UniChar.Char * AppData * State | |
10268 | val parseGenRef : Dtd -> UniChar.Char * AppData * State | |
10269 | -> (int * Base.GenEntity) * (AppData * State) | |
10270 | val parseParRef : Dtd -> UniChar.Char * AppData * State | |
10271 | -> (int * Base.ParEntity) * (AppData * State) | |
10272 | ||
10273 | val parseCharRefLit : UniChar.Data -> AppData * State | |
10274 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
10275 | val parseGenRefLit : Dtd -> UniChar.Data -> UniChar.Char * AppData * State | |
10276 | -> UniChar.Data * ((int * Base.GenEntity) * (AppData * State)) | |
10277 | val parseParRefLit : Dtd -> UniChar.Data -> UniChar.Char * AppData * State | |
10278 | -> UniChar.Data * ((int * Base.ParEntity) * (AppData * State)) | |
10279 | ||
10280 | val skipCharRef : AppData * State -> (UniChar.Char * AppData * State) | |
10281 | val skipReference : UniChar.Char * AppData * State -> (UniChar.Char * AppData * State) | |
10282 | ||
10283 | val skipPS : Dtd -> UniChar.Char * AppData * State | |
10284 | -> UniChar.Char * AppData * State | |
10285 | val skipPSopt : Dtd -> UniChar.Char * AppData * State | |
10286 | -> UniChar.Char * AppData * State | |
10287 | val skipPSmay : Dtd -> UniChar.Char * AppData * State | |
10288 | -> bool * (UniChar.Char * AppData * State) | |
10289 | val skipPSdec : Dtd -> UniChar.Char * AppData * State | |
10290 | -> bool * (UniChar.Char * AppData * State) | |
10291 | end | |
10292 | ||
10293 | (*--------------------------------------------------------------------------*) | |
10294 | (* Structure: ParseRefs *) | |
10295 | (* *) | |
10296 | (* Exceptions raised by functions in this structure: *) | |
10297 | (* parseCharRef : NoSuchChar SyntaxError *) | |
10298 | (* parseGenRef : NoSuchEntity SyntaxState *) | |
10299 | (* parseParRef : NoSuchEntity SyntaxState *) | |
10300 | (* skipCharRef : none *) | |
10301 | (* skipPS : none *) | |
10302 | (* skipPSdec : none *) | |
10303 | (* skipPSmay : none *) | |
10304 | (* skipPSopt : none *) | |
10305 | (* skipReference : none *) | |
10306 | (*--------------------------------------------------------------------------*) | |
10307 | functor ParseRefs (structure ParseBase : ParseBase) | |
10308 | : ParseRefs = | |
10309 | struct | |
10310 | structure ParseXml = ParseXml (structure ParseBase = ParseBase) | |
10311 | ||
10312 | open | |
10313 | Base Errors UniClasses | |
10314 | ParseXml | |
10315 | ||
10316 | (*--------------------------------------------------------------------*) | |
10317 | (* parse a character reference, the "&#" already read. See 4.1: *) | |
10318 | (* *) | |
10319 | (* [66] CharRef ::= '&#' [0-9]+ ';' *) | |
10320 | (* | '&#x' [0-9a-fA-F]+ ';' [ WFC: Legal Character ] *) | |
10321 | (* *) | |
10322 | (* Well-Formedness Constraint: Legal Character *) | |
10323 | (* Characters referred to using character references must match the *) | |
10324 | (* production for Char. *) | |
10325 | (* *) | |
10326 | (* If the character reference begins with "&#x", the digits and *) | |
10327 | (* letters up to the terminating ; provide a hexadecimal *) | |
10328 | (* representation of the character's code point in ISO/IEC 10646. *) | |
10329 | (* If it begins just with "&#", the digits up to the terminating ; *) | |
10330 | (* provide a decimal representation of the character's code point. *) | |
10331 | (* *) | |
10332 | (* raise SyntaxError if no number or x plus hexnum is found, or if no *) | |
10333 | (* semicolon follows it. *) | |
10334 | (* raise NoSuchChar if the reference is to a non-XML character. *) | |
10335 | (* *) | |
10336 | (* return the character referred to, and the remaining state. *) | |
10337 | (*--------------------------------------------------------------------*) | |
10338 | fun parseCharRef aq = | |
10339 | let | |
10340 | (*--------------------------------------------------------------*) | |
10341 | (* parse a (hexa)decimal number, accumulating the value in the *) | |
10342 | (* first parameter. *) | |
10343 | (* *) | |
10344 | (* return the numbers value as a Char. *) | |
10345 | (*--------------------------------------------------------------*) | |
10346 | fun do_hex_n yet (c,a,q) = | |
10347 | case hexValue c | |
10348 | of NONE => (yet,(c,a,q)) | |
10349 | | SOME v => do_hex_n (0wx10*yet+v) (getChar (a,q)) | |
10350 | fun do_dec_n yet (c,a,q) = | |
10351 | case decValue c | |
10352 | of NONE => (yet,(c,a,q)) | |
10353 | | SOME v => do_dec_n (0wx0A*yet+v) (getChar (a,q)) | |
10354 | (*--------------------------------------------------------------*) | |
10355 | (* Parse a (hexa)decimal number of at least one digit. *) | |
10356 | (* *) | |
10357 | (* raise SyntaxError if no hexdigit is found first. *) | |
10358 | (* *) | |
10359 | (* return the numbers value as a Char. *) | |
10360 | (*--------------------------------------------------------------*) | |
10361 | fun do_hex_1 (c,a,q) = | |
10362 | case hexValue c | |
10363 | of SOME v => do_hex_n v (getChar (a,q)) | |
10364 | | NONE => let val a1 = hookError(a,(getPos q,ERR_EXPECTED(expHexDigit,[c]))) | |
10365 | in raise SyntaxError(c,a1,q) | |
10366 | end | |
10367 | (*--------------------------------------------------------------*) | |
10368 | (* Parse a decimal number of at least one digit, or a hexnumber *) | |
10369 | (* if the first character is 'x'. *) | |
10370 | (* *) | |
10371 | (* raise SyntaxError if neither 'x' nor digit is found first. *) | |
10372 | (* *) | |
10373 | (* return the number's value as a Char. *) | |
10374 | (*--------------------------------------------------------------*) | |
10375 | fun do_dec_1 (c,a,q) = | |
10376 | case decValue c | |
10377 | of SOME v => do_dec_n v (getChar (a,q)) | |
10378 | | NONE => if c=0wx78 (* #"x" *) | |
10379 | then do_hex_1 (getChar (a,q)) | |
10380 | else let val a1 = hookError(a,(getPos q,ERR_EXPECTED(expDigitX,[c]))) | |
10381 | in raise SyntaxError(c,a1,q) | |
10382 | end | |
10383 | ||
10384 | val (ch,(c1,a1,q1)) = do_dec_1 (getChar aq) | |
10385 | ||
10386 | val _ = if c1=0wx3B then () | |
10387 | else let val a2 = hookError(a1,(getPos q1,ERR_EXPECTED(expSemi,[c1]))) | |
10388 | in raise SyntaxError(c1,a2,q1) | |
10389 | end | |
10390 | ||
10391 | val _ = if isXml ch then () | |
10392 | else let val a2 = hookError(a1,(getPos q1,ERR_NON_XML_CHARREF ch)) | |
10393 | in raise NoSuchChar (a2,q1) | |
10394 | end | |
10395 | in (ch,a1,q1) | |
10396 | end | |
10397 | fun parseCharRefLit cs aq = | |
10398 | let | |
10399 | (*--------------------------------------------------------------*) | |
10400 | (* parse a (hexa)decimal number, accumulating the value in the *) | |
10401 | (* first parameter. *) | |
10402 | (* *) | |
10403 | (* return the numbers value as a Char. *) | |
10404 | (*--------------------------------------------------------------*) | |
10405 | fun do_hex_n (cs,yet) (c,a,q) = | |
10406 | case hexValue c | |
10407 | of NONE => (cs,yet,(c,a,q)) | |
10408 | | SOME v => do_hex_n (c::cs,0wx10*yet+v) (getChar (a,q)) | |
10409 | fun do_dec_n (cs,yet) (c,a,q) = | |
10410 | case decValue c | |
10411 | of NONE => (cs,yet,(c,a,q)) | |
10412 | | SOME v => do_dec_n (c::cs,0wx0A*yet+v) (getChar (a,q)) | |
10413 | (*--------------------------------------------------------------*) | |
10414 | (* Parse a (hexa)decimal number of at least one digit. *) | |
10415 | (* *) | |
10416 | (* raise SyntaxError if no hexdigit is found first. *) | |
10417 | (* *) | |
10418 | (* return the numbers value as a Char. *) | |
10419 | (*--------------------------------------------------------------*) | |
10420 | fun do_hex_1 cs (c,a,q) = | |
10421 | case hexValue c | |
10422 | of SOME v => do_hex_n (c::cs,v) (getChar (a,q)) | |
10423 | | NONE => let val a1 = hookError(a,(getPos q,ERR_EXPECTED(expHexDigit,[c]))) | |
10424 | in raise SyntaxError(c,a1,q) | |
10425 | end | |
10426 | (*--------------------------------------------------------------*) | |
10427 | (* Parse a decimal number of at least one digit, or a hexnumber *) | |
10428 | (* if the first character is 'x'. *) | |
10429 | (* *) | |
10430 | (* raise SyntaxError if neither 'x' nor digit is found first. *) | |
10431 | (* *) | |
10432 | (* return the number's value as a Char. *) | |
10433 | (*--------------------------------------------------------------*) | |
10434 | fun do_dec_1 cs (c,a,q) = | |
10435 | case decValue c | |
10436 | of SOME v => do_dec_n (c::cs,v) (getChar (a,q)) | |
10437 | | NONE => if c=0wx78 (* #"x" *) | |
10438 | then do_hex_1 (c::cs) (getChar (a,q)) | |
10439 | else let val a1 = hookError(a,(getPos q,ERR_EXPECTED(expDigitX,[c]))) | |
10440 | in raise SyntaxError(c,a1,q) | |
10441 | end | |
10442 | ||
10443 | val (cs1,ch,(c1,a1,q1)) = do_dec_1 cs (getChar aq) | |
10444 | ||
10445 | val _ = if c1=0wx3B then () | |
10446 | else let val a2 = hookError(a1,(getPos q1,ERR_EXPECTED(expSemi,[c1]))) | |
10447 | in raise SyntaxError(c1,a2,q1) | |
10448 | end | |
10449 | ||
10450 | val _ = if isXml ch then () | |
10451 | else let val a2 = hookError(a1,(getPos q1,ERR_NON_XML_CHARREF ch)) | |
10452 | in raise NoSuchChar (a2,q1) | |
10453 | end | |
10454 | in (c1::cs1,(ch,a1,q1)) | |
10455 | end | |
10456 | ||
10457 | (*--------------------------------------------------------------------*) | |
10458 | (* parse a general entity reference, the "&" already read. See 4.1: *) | |
10459 | (* *) | |
10460 | (* [68] EntityRef ::= '&' Name ';' [ WFC: Entity Declared ] *) | |
10461 | (* [ VC: Entity Declared ] *) | |
10462 | (* [ WFC: Parsed Entity ] *) | |
10463 | (* [ WFC: No Recursion ] *) | |
10464 | (* *) | |
10465 | (* Well-Formedness Constraint: Entity Declared *) | |
10466 | (* In a document without any DTD, a document with only an internal *) | |
10467 | (* DTD subset which contains no parameter entity references, or a *) | |
10468 | (* document with "standalone='yes'", the Name given in the entity *) | |
10469 | (* reference must match that in an entity declaration, ... *) | |
10470 | (* ... the declaration of a general entity must precede any *) | |
10471 | (* reference to it which appears in a default value in an *) | |
10472 | (* attribute-list declaration. *) | |
10473 | (* *) | |
10474 | (* Validity Constraint: Entity Declared *) | |
10475 | (* In a document with an external subset or external parameter *) | |
10476 | (* entities with "standalone='no'", the Name given in the entity *) | |
10477 | (* reference must match that in an entity declaration. ... *) | |
10478 | (* ... the declaration of a general entity must precede any *) | |
10479 | (* reference to it which appears in a default value in an *) | |
10480 | (* attribute-list declaration. *) | |
10481 | (* *) | |
10482 | (* Thus: in both cases it is an error if the entity is not declared. *) | |
10483 | (* The only difference is the impact on well-formednes/validity. *) | |
10484 | (* *) | |
10485 | (* There are three contexts in which a general entity reference can *) | |
10486 | (* appear: in content, in attribute value, in entity value. This *) | |
10487 | (* passage states that it need not be declared prior to a reference *) | |
10488 | (* in an entity value. But in this context, it is bypassed and not *) | |
10489 | (* included, i.e., it need not be recognized. *) | |
10490 | (* *) | |
10491 | (* Well-Formedness Constraint: Parsed Entity *) | |
10492 | (* An entity reference must not contain the name of an unparsed *) | |
10493 | (* entity. Unparsed entities may be referred to only in attribute *) | |
10494 | (* values ... *) | |
10495 | (* *) | |
10496 | (* Well-Formedness Constraint: No Recursion *) | |
10497 | (* A parsed entity must not contain a recursive reference to *) | |
10498 | (* itself, either directly or indirectly. *) | |
10499 | (* *) | |
10500 | (* print an error and raise SyntaxState if no name is found, or if no *) | |
10501 | (* semicolon follows it. *) | |
10502 | (* print an error and return GE_NULL if the reference is to an *) | |
10503 | (* undeclared, unparsed or open entity. *) | |
10504 | (* *) | |
10505 | (* return the entity referred to, and the remaining state. *) | |
10506 | (*--------------------------------------------------------------------*) | |
10507 | fun parseGenRef dtd (caq as (_,_,q)) = | |
10508 | let | |
10509 | val (name,(c1,a1,q1)) = parseName caq | |
10510 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expAnEntName,[c]) | |
10511 | val a1 = hookError(a,(getPos q,err)) | |
10512 | in raise SyntaxError(c,a1,q) | |
10513 | end | |
10514 | val _ = if c1=0wx3B then () | |
10515 | else let val a2 = hookError(a1,(getPos q1,ERR_EXPECTED(expSemi,[c1]))) | |
10516 | in raise SyntaxError(c1,a2,q1) | |
10517 | end | |
10518 | ||
10519 | val idx = GenEnt2Index dtd name | |
10520 | val (ent,ext) = getGenEnt dtd idx | |
10521 | ||
10522 | val _ = (* check whether entity is undeclared/unparsed/open *) | |
10523 | case ent | |
10524 | of GE_NULL => | |
10525 | if entitiesWellformed dtd | |
10526 | then let val err = ERR_UNDEC_ENTITY(ENT_GENERAL,name) | |
10527 | val a2 = hookError(a1,(getPos q,err)) | |
10528 | in raise NoSuchEntity (a2,q1) | |
10529 | end | |
10530 | else if useParamEnts() | |
10531 | then let val err = ERR_UNDECLARED(IT_GEN_ENT,name,LOC_NONE) | |
10532 | val a2 = hookError(a1,(getPos q,err)) | |
10533 | in raise NoSuchEntity (a2,q1) | |
10534 | end | |
10535 | else () | |
10536 | | GE_UNPARSED _ => let val err = ERR_ILLEGAL_ENTITY(ENT_UNPARSED,name,LOC_NONE) | |
10537 | val a2 = hookError(a1,(getPos q,err)) | |
10538 | in raise NoSuchEntity (a2,q1) | |
10539 | end | |
10540 | | _ => if isOpen(idx,false,q1) | |
10541 | then let val err = ERR_RECURSIVE_ENTITY(ENT_GENERAL,name) | |
10542 | val a2 = hookError(a1,(getPos q,err)) | |
10543 | in raise NoSuchEntity (a2,q1) | |
10544 | end | |
10545 | else () | |
10546 | ||
10547 | val a2 = | |
10548 | if ext andalso !O_VALIDATE andalso standsAlone dtd andalso inDocEntity q1 | |
10549 | then let val _ = if !O_ERROR_MINIMIZE then setStandAlone dtd false else () | |
10550 | in hookError(a1,(getPos q,ERR_STANDALONE_ENT(ENT_GENERAL,name))) | |
10551 | end | |
10552 | else a1 | |
10553 | ||
10554 | in ((idx,ent),(a2,q1)) | |
10555 | end | |
10556 | fun parseGenRefLit dtd cs (caq as (_,_,q)) = | |
10557 | let | |
10558 | val (cs1,name,(c1,a1,q1)) = parseNameLit cs caq | |
10559 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expAnEntName,[c]) | |
10560 | val a1 = hookError(a,(getPos q,err)) | |
10561 | in raise SyntaxError(c,a1,q) | |
10562 | end | |
10563 | val _ = if c1=0wx3B then () | |
10564 | else let val a2 = hookError(a1,(getPos q1,ERR_EXPECTED(expSemi,[c1]))) | |
10565 | in raise SyntaxError(c1,a2,q1) | |
10566 | end | |
10567 | ||
10568 | val idx = GenEnt2Index dtd name | |
10569 | val (ent,ext) = getGenEnt dtd idx | |
10570 | ||
10571 | val _ = (* check whether entity is undeclared/unparsed/open *) | |
10572 | case ent | |
10573 | of GE_NULL => | |
10574 | if entitiesWellformed dtd | |
10575 | then let val err = ERR_UNDEC_ENTITY(ENT_GENERAL,name) | |
10576 | val a2 = hookError(a1,(getPos q,err)) | |
10577 | in raise NoSuchEntity (a2,q1) | |
10578 | end | |
10579 | else if useParamEnts() | |
10580 | then let val err = ERR_UNDECLARED(IT_GEN_ENT,name,LOC_NONE) | |
10581 | val a2 = hookError(a1,(getPos q,err)) | |
10582 | in raise NoSuchEntity (a2,q1) | |
10583 | end | |
10584 | else () | |
10585 | | GE_UNPARSED _ => let val err = ERR_ILLEGAL_ENTITY(ENT_UNPARSED,name,LOC_NONE) | |
10586 | val a2 = hookError(a1,(getPos q,err)) | |
10587 | in raise NoSuchEntity (a2,q1) | |
10588 | end | |
10589 | | _ => if isOpen(idx,false,q1) | |
10590 | then let val err = ERR_RECURSIVE_ENTITY(ENT_GENERAL,name) | |
10591 | val a2 = hookError(a1,(getPos q,err)) | |
10592 | in raise NoSuchEntity (a2,q1) | |
10593 | end | |
10594 | else () | |
10595 | ||
10596 | val a2 = | |
10597 | if ext andalso !O_VALIDATE andalso standsAlone dtd andalso inDocEntity q1 | |
10598 | then let val _ = if !O_ERROR_MINIMIZE then setStandAlone dtd false else () | |
10599 | in hookError(a1,(getPos q,ERR_STANDALONE_ENT(ENT_GENERAL,name))) | |
10600 | end | |
10601 | else a1 | |
10602 | ||
10603 | in (c1::cs1,((idx,ent),(a2,q1))) | |
10604 | end | |
10605 | ||
10606 | (*--------------------------------------------------------------------*) | |
10607 | (* parse a parameter entity reference, the "%" already read. See 4.1: *) | |
10608 | (* *) | |
10609 | (* [69] PEReference ::= '%' Name ';' [ VC: Entity Declared ] *) | |
10610 | (* [ WFC: No Recursion ] *) | |
10611 | (* [ WFC: In DTD ] *) | |
10612 | (* *) | |
10613 | (* Well-Formedness Constraint: Entity Declared *) | |
10614 | (* In a document without any DTD, a document with only an internal *) | |
10615 | (* DTD subset which contains no parameter entity references, or a *) | |
10616 | (* document with "standalone='yes'", the Name given in the entity *) | |
10617 | (* reference must match that in an entity declaration, ... *) | |
10618 | (* The declaration of a parameter entity must precede any reference *) | |
10619 | (* to it... *) | |
10620 | (* *) | |
10621 | (* Validity Constraint: Entity Declared *) | |
10622 | (* In a document with an external subset or external parameter *) | |
10623 | (* entities with "standalone='no'", the Name given in the entity *) | |
10624 | (* reference must match that in an entity declaration. ... *) | |
10625 | (* The declaration of a parameter entity must precede any reference *) | |
10626 | (* to it... *) | |
10627 | (* *) | |
10628 | (* Thus: in both cases it is an error if the entity is not declared. *) | |
10629 | (* The only difference is the impact on well-formednes/validity. *) | |
10630 | (* Because the thing to be parsed is a parameter entity reference, *) | |
10631 | (* this DTD has references, and thus an undeclared entity is probably *) | |
10632 | (* a validity and not a well-formedness error. Thus setExternal must *) | |
10633 | (* be called before determining a possible error! *) | |
10634 | (* *) | |
10635 | (* Well-Formedness Constraint: No Recursion *) | |
10636 | (* A parsed entity must not contain a recursive reference to *) | |
10637 | (* itself, either directly or indirectly. *) | |
10638 | (* *) | |
10639 | (* print an error and raise SyntaxError if no name is found, or if no *) | |
10640 | (* semicolon follows it. *) | |
10641 | (* print an error and return PE_NULL if the reference is to an *) | |
10642 | (* undeclared or open entity. *) | |
10643 | (* *) | |
10644 | (* return the entity referred to, and the remaining state. *) | |
10645 | (*--------------------------------------------------------------------*) | |
10646 | fun parseParRef dtd (caq as (_,_,q)) = | |
10647 | let | |
10648 | val (name,(c1,a1,q1)) = parseName caq | |
10649 | handle NotFound(c,a,q) => let val err = ERR_EXPECTED(expAnEntName,[c]) | |
10650 | val a1 = hookError(a,(getPos q,err)) | |
10651 | in raise SyntaxError(c,a1,q) | |
10652 | end | |
10653 | ||
10654 | val _ = if c1=0wx3B then () | |
10655 | else let val err = ERR_EXPECTED(expSemi,[c1]) | |
10656 | val a2 = hookError(a1,(getPos q1,err)) | |
10657 | in raise SyntaxError(c1,a2,q1) | |
10658 | end | |
10659 | ||
10660 | val _ = setExternal dtd; | |
10661 | val idx = ParEnt2Index dtd name | |
10662 | val (ent,ext) = getParEnt dtd idx | |
10663 | ||
10664 | val _ = (* check whether entity is declared *) | |
10665 | case ent | |
10666 | of PE_NULL => | |
10667 | if entitiesWellformed dtd | |
10668 | then let val err = ERR_UNDEC_ENTITY(ENT_PARAMETER,name) | |
10669 | val a2 = hookError(a1,(getPos q,err)) | |
10670 | in raise NoSuchEntity (a2,q1) | |
10671 | end | |
10672 | else if useParamEnts() | |
10673 | then let val err = ERR_UNDECLARED(IT_PAR_ENT,name,LOC_NONE) | |
10674 | val a2 = hookError(a1,(getPos q,err)) | |
10675 | in raise NoSuchEntity (a2,q1) | |
10676 | end | |
10677 | else () | |
10678 | (* check whether the entity is already open *) | |
10679 | | _ => if isOpen(idx,true,q1) | |
10680 | then let val err = ERR_RECURSIVE_ENTITY(ENT_PARAMETER,name) | |
10681 | val a2 = hookError(a1,(getPos q,err)) | |
10682 | in raise NoSuchEntity (a2,q1) | |
10683 | end | |
10684 | else () | |
10685 | in ((idx,ent),(a1,q1)) | |
10686 | end | |
10687 | fun parseParRefLit dtd cs (caq as (_,_,q)) = | |
10688 | let | |
10689 | val (cs1,name,(c1,a1,q1)) = parseNameLit cs caq | |
10690 | handle NotFound(c,a,q) => let val err = ERR_EXPECTED(expAnEntName,[c]) | |
10691 | val a1 = hookError(a,(getPos q,err)) | |
10692 | in raise SyntaxError(c,a1,q) | |
10693 | end | |
10694 | ||
10695 | val _ = if c1=0wx3B then () | |
10696 | else let val err = ERR_EXPECTED(expSemi,[c1]) | |
10697 | val a2 = hookError(a1,(getPos q1,err)) | |
10698 | in raise SyntaxError(c1,a2,q1) | |
10699 | end | |
10700 | ||
10701 | val _ = setExternal dtd; | |
10702 | val idx = ParEnt2Index dtd name | |
10703 | val (ent,ext) = getParEnt dtd idx | |
10704 | ||
10705 | val _ = (* check whether entity is declared *) | |
10706 | case ent | |
10707 | of PE_NULL => | |
10708 | if entitiesWellformed dtd | |
10709 | then let val err = ERR_UNDEC_ENTITY(ENT_PARAMETER,name) | |
10710 | val a2 = hookError(a1,(getPos q,err)) | |
10711 | in raise NoSuchEntity (a2,q1) | |
10712 | end | |
10713 | else if useParamEnts() | |
10714 | then let val err = ERR_UNDECLARED(IT_PAR_ENT,name,LOC_NONE) | |
10715 | val a2 = hookError(a1,(getPos q,err)) | |
10716 | in raise NoSuchEntity (a2,q1) | |
10717 | end | |
10718 | else () | |
10719 | (* check whether the entity is already open *) | |
10720 | | _ => if isOpen(idx,true,q1) | |
10721 | then let val err = ERR_RECURSIVE_ENTITY(ENT_PARAMETER,name) | |
10722 | val a2 = hookError(a1,(getPos q,err)) | |
10723 | in raise NoSuchEntity (a2,q1) | |
10724 | end | |
10725 | else () | |
10726 | in (c1::cs1,((idx,ent),(a1,q1))) | |
10727 | end | |
10728 | ||
10729 | (*--------------------------------------------------------------------*) | |
10730 | (* skip a general/parameter entity reference, the "&/%" already read. *) | |
10731 | (* *) | |
10732 | (* print an error if no name is found, or if no semicolon follows it. *) | |
10733 | (* *) | |
10734 | (* handle any SyntaxState by returning its char and state. *) | |
10735 | (* *) | |
10736 | (* return the remaining state. *) | |
10737 | (*--------------------------------------------------------------------*) | |
10738 | fun skipReference caq = | |
10739 | let val (_,(c1,a1,q1)) = parseName caq | |
10740 | in if c1=0wx3B then getChar (a1,q1) | |
10741 | else let val err = ERR_EXPECTED(expSemi,[c1]) | |
10742 | val a2 = hookError(a1,(getPos q1,err)) | |
10743 | in (c1,a2,q1) | |
10744 | end | |
10745 | end | |
10746 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expAnEntName,[c]) | |
10747 | val a1 = hookError(a,(getPos q,err)) | |
10748 | in (c,a1,q) | |
10749 | end | |
10750 | ||
10751 | (*--------------------------------------------------------------------*) | |
10752 | (* skip a character reference, the "&#" already read. See 4.1: *) | |
10753 | (* *) | |
10754 | (* print an error if no number or x plus hexnum is found, or if no *) | |
10755 | (* semicolon follows it. *) | |
10756 | (* *) | |
10757 | (* handle any SyntaxState by returning its char and state. *) | |
10758 | (* *) | |
10759 | (* return the remaining char and state. *) | |
10760 | (*--------------------------------------------------------------------*) | |
10761 | fun skipCharRef aq = | |
10762 | let | |
10763 | (*--------------------------------------------------------------*) | |
10764 | (* skip a (hexa)decimal number. *) | |
10765 | (*--------------------------------------------------------------*) | |
10766 | fun skip_ximal isX (c,a,q) = | |
10767 | if isX c then skip_ximal isX (getChar (a,q)) else (c,a,q) | |
10768 | ||
10769 | val (c1,a1,q1) = getChar aq | |
10770 | val (c2,a2,q2) = | |
10771 | if isDec c1 then skip_ximal isDec (getChar (a1,q1)) | |
10772 | else if c1=0wx78 (* #"x" *) | |
10773 | then let val (c2,a2,q2) = getChar (a1,q1) | |
10774 | in if isHex c2 then skip_ximal isHex (getChar (a2,q2)) | |
10775 | else let val err = ERR_EXPECTED(expHexDigit,[c2]) | |
10776 | val a3 = hookError(a2,(getPos q2,err)) | |
10777 | in raise SyntaxError(c2,a3,q2) | |
10778 | end | |
10779 | end | |
10780 | else let val a2 = hookError(a1,(getPos q1,ERR_EXPECTED(expDigitX,[c1]))) | |
10781 | in raise SyntaxError (c1,a2,q1) | |
10782 | end | |
10783 | ||
10784 | in if c2=0wx3B then getChar (a2,q2) | |
10785 | else (c2,hookError(a2,(getPos q2,ERR_EXPECTED(expSemi,[c2]))),q2) | |
10786 | end | |
10787 | handle SyntaxError caq => caq | |
10788 | ||
10789 | (*--------------------------------------------------------------------*) | |
10790 | (* parse a sequence of white space in markup declarations. Cf. 2.3: *) | |
10791 | (* *) | |
10792 | (* [3] S ::= (#x20 | #x9 | #xD | #xA)+ *) | |
10793 | (* *) | |
10794 | (* and 2.8 states: *) | |
10795 | (* *) | |
10796 | (* The markup declarations may be made up in whole or in part of *) | |
10797 | (* the replacement text of parameter entities. The productions *) | |
10798 | (* later in this specification for individual nonterminals *) | |
10799 | (* (elementdecl, AttlistDecl, and so on) describe the declarations *) | |
10800 | (* after all the parameter entities have been included. *) | |
10801 | (* *) | |
10802 | (* in markup declarations, we thus have to include entity references *) | |
10803 | (* and skip entity ends, except for the document end. *) | |
10804 | (* *) | |
10805 | (* Well-Formedness Constraint: PEs in Internal Subset *) | |
10806 | (* In the internal DTD subset, parameter-entity references can *) | |
10807 | (* occur only where markup declarations can occur, not within *) | |
10808 | (* markup declarations. (This does not apply to references that *) | |
10809 | (* occur in external parameter entities or to the external subset.) *) | |
10810 | (* *) | |
10811 | (* we therefore always check whether we are in the internal subset *) | |
10812 | (* before including a parameter entity. *) | |
10813 | (*--------------------------------------------------------------------*) | |
10814 | (* handle a parameter entity reference *) | |
10815 | (*--------------------------------------------------------------------*) | |
10816 | fun doParRef dtd (caq as (c,a,q)) = | |
10817 | if inDocEntity q | |
10818 | then let val err = ERR_FORBIDDEN_HERE(IT_PAR_REF,LOC_INT_DECL) | |
10819 | val a1 = hookError(a,(getPos q,err)) | |
10820 | in skipReference (c,a1,q) | |
10821 | end | |
10822 | else let val ((id,ent),(a1,q1)) = parseParRef dtd caq | |
10823 | in case ent | |
10824 | of PE_NULL => getChar (a1,q1) | |
10825 | | PE_INTERN (_,rep) => getChar(a1,(pushIntern(q1,id,true,rep))) | |
10826 | | PE_EXTERN extId => #3(openExtern(id,true,resolveExtId extId) (a1,q1)) | |
10827 | handle CantOpenFile(fmsg,a) | |
10828 | => let val err = ERR_NO_SUCH_FILE fmsg | |
10829 | val a1 = hookError(a,(getPos q1,err)) | |
10830 | in (getChar(a1,q1)) | |
10831 | end | |
10832 | end | |
10833 | handle SyntaxError caq => caq | |
10834 | | NoSuchEntity aq => getChar aq | |
10835 | (*--------------------------------------------------------------------*) | |
10836 | (* parse optional white space. *) | |
10837 | (* *) | |
10838 | (* catch SyntaxState exceptions from parameter refs. *) | |
10839 | (* *) | |
10840 | (* print an error if a parameter entity reference or an entity end is *) | |
10841 | (* found inside the internal subset. *) | |
10842 | (* *) | |
10843 | (* return the following character and the remaining state. *) | |
10844 | (*--------------------------------------------------------------------*) | |
10845 | fun skipPSopt dtd caq = | |
10846 | let fun doit (c,a,q) = | |
10847 | case c | |
10848 | of 0wx00 => | |
10849 | if isSpecial q then (c,a,q) | |
10850 | else let val a1 = if !O_VALIDATE andalso inDocEntity q | |
10851 | then hookError(a,(getPos q,ERR_EE_INT_SUBSET)) | |
10852 | else a | |
10853 | in doit (getChar (a1,q)) | |
10854 | end | |
10855 | | 0wx09 => doit (getChar (a,q)) | |
10856 | | 0wx0A => doit (getChar (a,q)) | |
10857 | | 0wx20 => doit (getChar (a,q)) | |
10858 | | 0wx25 (* #"%" *) => doit (doParRef dtd (getChar (a,q))) | |
10859 | | _ => (c,a,q) | |
10860 | in doit caq | |
10861 | end | |
10862 | (*--------------------------------------------------------------------*) | |
10863 | (* parse optional white space. *) | |
10864 | (* *) | |
10865 | (* catch SyntaxState exceptions from parameter refs. *) | |
10866 | (* *) | |
10867 | (* print an error if a parameter entity reference or an entity end is *) | |
10868 | (* found inside the internal subset. *) | |
10869 | (* *) | |
10870 | (* return a boolean whether white space was actually found, and the *) | |
10871 | (* following character with the remaining state. *) | |
10872 | (*--------------------------------------------------------------------*) | |
10873 | fun skipPSmay dtd (c,a,q) = | |
10874 | case c | |
10875 | of 0wx00 => | |
10876 | if isSpecial q then (false,(c,a,q)) | |
10877 | else let val a1 = if !O_VALIDATE andalso inDocEntity q | |
10878 | then hookError(a,(getPos q,ERR_EE_INT_SUBSET)) | |
10879 | else a | |
10880 | in (true,skipPSopt dtd (getChar (a1,q))) | |
10881 | end | |
10882 | | 0wx09 => (true,skipPSopt dtd (getChar (a,q))) | |
10883 | | 0wx0A => (true,skipPSopt dtd (getChar (a,q))) | |
10884 | | 0wx20 => (true,skipPSopt dtd (getChar (a,q))) | |
10885 | | 0wx25 (* #"%" *) => (true,skipPSopt dtd (doParRef dtd (getChar (a,q)))) | |
10886 | | _ => (false,(c,a,q)) | |
10887 | (*--------------------------------------------------------------------*) | |
10888 | (* parse required white space. *) | |
10889 | (* *) | |
10890 | (* catch SyntaxState exceptions from parameter refs. *) | |
10891 | (* *) | |
10892 | (* print an error and return if no white space character is found. *) | |
10893 | (* print an error if a parameter entity reference or an entity end is *) | |
10894 | (* found inside the internal subset. *) | |
10895 | (* *) | |
10896 | (* return the following character and the remaining state. *) | |
10897 | (*--------------------------------------------------------------------*) | |
10898 | fun skipPS dtd (c,a,q) = | |
10899 | case c | |
10900 | of 0wx00 => | |
10901 | if isSpecial q then (c,hookError(a,(getPos q,ERR_MISSING_WHITE)),q) | |
10902 | else let val a1 = if !O_VALIDATE andalso inDocEntity q | |
10903 | then hookError(a,(getPos q,ERR_EE_INT_SUBSET)) | |
10904 | else a | |
10905 | in skipPSopt dtd (getChar (a1,q)) | |
10906 | end | |
10907 | | 0wx09 => skipPSopt dtd (getChar (a,q)) | |
10908 | | 0wx0A => skipPSopt dtd (getChar (a,q)) | |
10909 | | 0wx20 => skipPSopt dtd (getChar (a,q)) | |
10910 | | 0wx25 (* #"%" *) => skipPSopt dtd (doParRef dtd (getChar (a,q))) | |
10911 | | _ => (c,hookError(a,(getPos q,ERR_MISSING_WHITE)),q) | |
10912 | (*--------------------------------------------------------------------*) | |
10913 | (* parse required white space, taking care of a single '%' character. *) | |
10914 | (* this is only needed before the entity name in an entity decl. *) | |
10915 | (* *) | |
10916 | (* catch SyntaxState exceptions from parameter refs. *) | |
10917 | (* *) | |
10918 | (* print an error if no white space character is found. *) | |
10919 | (* print an error if a parameter entity reference or an entity end is *) | |
10920 | (* found inside the internal subset. *) | |
10921 | (* *) | |
10922 | (* return a boolean whether a '%' was found, the following character *) | |
10923 | (* and the remaining state. *) | |
10924 | (*--------------------------------------------------------------------*) | |
10925 | fun skipPSdec dtd caq = | |
10926 | let fun doit req (c,a,q) = | |
10927 | case c | |
10928 | of 0wx00 => | |
10929 | if isSpecial q then (false,(c,a,q)) | |
10930 | else let val a1 = if !O_VALIDATE andalso inDocEntity q | |
10931 | then hookError(a,(getPos q,ERR_EE_INT_SUBSET)) | |
10932 | else a | |
10933 | in doit false (getChar (a1,q)) | |
10934 | end | |
10935 | | 0wx09 => doit false (getChar (a,q)) | |
10936 | | 0wx0A => doit false (getChar (a,q)) | |
10937 | | 0wx20 => doit false (getChar (a,q)) | |
10938 | | 0wx25 => (* #"%" *) | |
10939 | let val (c1,a1,q1) = getChar (a,q) | |
10940 | in if isNms c1 then doit false (doParRef dtd (c1,a1,q1)) | |
10941 | else let val a2 = if req then hookError(a1,(getPos q,ERR_MISSING_WHITE)) | |
10942 | else a1 | |
10943 | in (true,(c1,a2,q1)) | |
10944 | end | |
10945 | end | |
10946 | | _ => let val a1 = if req then hookError(a,(getPos q,ERR_MISSING_WHITE)) | |
10947 | else a | |
10948 | in (false,(c,a1,q)) | |
10949 | end | |
10950 | in | |
10951 | doit true caq | |
10952 | end | |
10953 | end | |
10954 | (* stop of ../../Parser/Parse/parseRefs.sml *) | |
10955 | (* start of ../../Parser/Parse/parseLiterals.sml *) | |
10956 | signature ParseLiterals = | |
10957 | sig | |
10958 | (*---------------------------------------------------------------------- | |
10959 | include ParseBase | |
10960 | ||
10961 | val parseName : UniChar.Char * AppData * State | |
10962 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
10963 | val parseNmtoken : UniChar.Char * AppData * State | |
10964 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
10965 | ||
10966 | val parseComment : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
10967 | val parseProcInstr : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
10968 | val skipS : UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
10969 | val skipSopt : UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
10970 | val skipSmay : UniChar.Char * AppData * State -> bool * (UniChar.Char * AppData * State) | |
10971 | val parseSopt : UniChar.Data -> UniChar.Char * AppData * State | |
10972 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
10973 | val parseSmay : UniChar.Data -> UniChar.Char * AppData * State | |
10974 | -> bool * (UniChar.Data * (UniChar.Char * AppData * State)) | |
10975 | val parseEq : UniChar.Char * AppData * State | |
10976 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
10977 | ||
10978 | val openExtern : int * Uri.Uri -> AppData * State | |
10979 | -> Encoding.Encoding * HookData.TextDecl option * (UniChar.Char * AppData * State) | |
10980 | val openDocument : Uri.Uri option -> AppData | |
10981 | -> Encoding.Encoding * HookData.XmlDecl option * (UniChar.Char * AppData * State) | |
10982 | val openSubset : Uri.Uri -> AppData | |
10983 | -> Encoding.Encoding * HookData.TextDecl option * (UniChar.Char * AppData * State) | |
10984 | ||
10985 | val skipCharRef : AppData * State -> (UniChar.Char * AppData * State) | |
10986 | val skipReference : UniChar.Char * AppData * State -> (UniChar.Char * AppData * State) | |
10987 | val parseGenRef : Dtd -> UniChar.Char * AppData * State | |
10988 | -> (int * Base.GenEntity) * (AppData * State) | |
10989 | val parseParRef : Dtd -> UniChar.Char * AppData * State | |
10990 | -> (int * Base.ParEntity) * (AppData * State) | |
10991 | val parseCharRefLit : UniChar.Data -> AppData * State | |
10992 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
10993 | val skipPS : Dtd -> UniChar.Char * AppData * State | |
10994 | -> UniChar.Char * AppData * State | |
10995 | val skipPSopt : Dtd -> UniChar.Char * AppData * State | |
10996 | -> UniChar.Char * AppData * State | |
10997 | val skipPSmay : Dtd -> UniChar.Char * AppData * State | |
10998 | -> bool * (UniChar.Char * AppData * State) | |
10999 | val skipPSdec : Dtd -> UniChar.Char * AppData * State | |
11000 | -> bool * (UniChar.Char * AppData * State) | |
11001 | ----------------------------------------------------------------------*) | |
11002 | include ParseRefs | |
11003 | ||
11004 | val parseSystemLiteral : UniChar.Char * AppData * State | |
11005 | -> Uri.Uri * UniChar.Char * (UniChar.Char * AppData * State) | |
11006 | val parsePubidLiteral : UniChar.Char * AppData * State | |
11007 | -> string * UniChar.Char * (UniChar.Char * AppData * State) | |
11008 | ||
11009 | val parseAttValue : Dtd -> UniChar.Char * AppData * State | |
11010 | -> UniChar.Vector * UniChar.Data * (UniChar.Char * AppData * State) | |
11011 | val parseEntityValue : Dtd -> (UniChar.Vector * UniChar.Vector -> 'a) | |
11012 | -> UniChar.Char * AppData * State | |
11013 | -> 'a * (UniChar.Char * AppData * State) | |
11014 | end | |
11015 | ||
11016 | (*--------------------------------------------------------------------------*) | |
11017 | (* Structure: ParseLiterals *) | |
11018 | (* *) | |
11019 | (* Exceptions raised by functions in this structure: *) | |
11020 | (* parseSystemLiteral : NotFound *) | |
11021 | (* parsePubidLiteral : NotFound *) | |
11022 | (* parseAttValue : NotFound *) | |
11023 | (* parseEntityValue : NotFound *) | |
11024 | (*--------------------------------------------------------------------------*) | |
11025 | functor ParseLiterals (structure ParseBase : ParseBase) | |
11026 | : ParseLiterals = | |
11027 | struct | |
11028 | structure ParseRefs = ParseRefs (structure ParseBase = ParseBase) | |
11029 | ||
11030 | open | |
11031 | Base UniChar Errors UniClasses Uri | |
11032 | ParseRefs | |
11033 | ||
11034 | val THIS_MODULE = "ParseLiterals" | |
11035 | ||
11036 | (*--------------------------------------------------------------------*) | |
11037 | (* parse a system literal, the quote character ("'" or '"') already --*) | |
11038 | (* read and passed as first argument. cf. 2.3: *) | |
11039 | (* *) | |
11040 | (* ... Note that a SystemLiteral can be parsed without scanning *) | |
11041 | (* for markup. *) | |
11042 | (* *) | |
11043 | (* [11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'") *) | |
11044 | (* *) | |
11045 | (* print an error and end the literal if an entity end is found. *) | |
11046 | (* *) | |
11047 | (* return the literal as a string together with the next character *) | |
11048 | (* and remaining state. *) | |
11049 | (*--------------------------------------------------------------------*) | |
11050 | (* might raise: none *) | |
11051 | (*--------------------------------------------------------------------*) | |
11052 | fun parseSystemLiteral' quote aq = | |
11053 | let | |
11054 | fun doit text (c,a,q) = | |
11055 | if c=quote then (text,getChar (a,q)) | |
11056 | else if c=0wx0 | |
11057 | then let val a1 = hookError(a,(getPos q,ERR_ENDED_BY_EE LOC_SYS_LIT)) | |
11058 | in (text,(c,a1,q)) | |
11059 | end | |
11060 | else if c>0wx7F andalso !O_WARN_NON_ASCII_URI | |
11061 | then let val a1 = hookWarning(a,(getPos q,WARN_NON_ASCII_URI c)) | |
11062 | in doit (c::text) (getChar(a1,q)) | |
11063 | end | |
11064 | else doit (c::text) (getChar(a,q)) | |
11065 | ||
11066 | val (text,caq1) = doit nil (getChar aq) | |
11067 | in | |
11068 | (Data2Uri(rev text),quote,caq1) | |
11069 | end | |
11070 | (*--------------------------------------------------------------------*) | |
11071 | (* parse a system literal. *) | |
11072 | (* *) | |
11073 | (* [11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'") *) | |
11074 | (* *) | |
11075 | (* raise NotFound if neither '"' nor "'" comes first. *) | |
11076 | (* *) | |
11077 | (* return the literal as a string together with the next character *) | |
11078 | (* and remaining state. *) | |
11079 | (*--------------------------------------------------------------------*) | |
11080 | (* might raise: NotFound *) | |
11081 | (*--------------------------------------------------------------------*) | |
11082 | fun parseSystemLiteral (c,a,q) = | |
11083 | if c=0wx22 (* "'" *) orelse | |
11084 | c=0wx27 (* '"' *) | |
11085 | then parseSystemLiteral' c (a,q) | |
11086 | else raise NotFound (c,a,q) | |
11087 | ||
11088 | (*--------------------------------------------------------------------*) | |
11089 | (* parse a pubid literal, the quote character ("'" or '"') already ---*) | |
11090 | (* read and passed as first argument. cf. 2.3: *) | |
11091 | (* *) | |
11092 | (* [12] PubidLiteral ::= '"' PubidChar* '"' *) | |
11093 | (* | "'" (PubidChar - "'")* "'" *) | |
11094 | (* *) | |
11095 | (* print an error and end the literal if an entity end is found. *) | |
11096 | (* print an error if a non-pubid character is found. *) | |
11097 | (* *) | |
11098 | (* return the literal as a string together with the next character *) | |
11099 | (* and remaining state. *) | |
11100 | (*--------------------------------------------------------------------*) | |
11101 | (* might raise: none *) | |
11102 | (*--------------------------------------------------------------------*) | |
11103 | fun parsePubidLiteral' quote aq = | |
11104 | let | |
11105 | fun doit (hadSpace,atStart,text) aq = | |
11106 | let val (c1,a1,q1) = getChar aq | |
11107 | in case c1 | |
11108 | of 0wx00 => let val a2 = hookError(a1,(getPos q1,ERR_ENDED_BY_EE LOC_PUB_LIT)) | |
11109 | in (text,(c1,a2,q1)) | |
11110 | end | |
11111 | | 0wx0A => doit (true,atStart,text) (a1,q1) | |
11112 | | 0wx20 => doit (true,atStart,text) (a1,q1) | |
11113 | | _ => | |
11114 | if c1=quote then (text,getChar (a1,q1)) | |
11115 | else if not (isPubid c1) | |
11116 | then let val err = ERR_FORBIDDEN_HERE(IT_CHAR c1,LOC_PUB_LIT) | |
11117 | val a2 = hookError(a1,(getPos q1,err)) | |
11118 | in doit (hadSpace,atStart,text) (a2,q1) | |
11119 | end | |
11120 | else if hadSpace andalso not atStart | |
11121 | then doit (false,false,c1::0wx20::text) (a1,q1) | |
11122 | else doit (false,false,c1::text) (a1,q1) | |
11123 | end | |
11124 | val (text,caq1) = doit (false,true,nil) aq | |
11125 | in | |
11126 | (Latin2String(rev text),quote,caq1) | |
11127 | end | |
11128 | (*--------------------------------------------------------------------*) | |
11129 | (* parse a pubid literal. *) | |
11130 | (* *) | |
11131 | (* [12] PubidLiteral ::= '"' PubidChar* '"' *) | |
11132 | (* | "'" (PubidChar - "'")* "'" *) | |
11133 | (* *) | |
11134 | (* raise NotFound if neither '"' nor "'" comes first. *) | |
11135 | (* *) | |
11136 | (* return the literal as a string together with the next character *) | |
11137 | (* and remaining state. *) | |
11138 | (*--------------------------------------------------------------------*) | |
11139 | (* might raise: NotFound *) | |
11140 | (*--------------------------------------------------------------------*) | |
11141 | fun parsePubidLiteral (c,a,q) = | |
11142 | if c=0wx22 (* "'" *) orelse | |
11143 | c=0wx27 (* '"' *) | |
11144 | then parsePubidLiteral' c (a,q) | |
11145 | else raise NotFound (c,a,q) | |
11146 | ||
11147 | (*--------------------------------------------------------------------*) | |
11148 | (* parse an entity value and the quote character ("'" or '"') passed *) | |
11149 | (* as first argument. Cf. 2.3: *) | |
11150 | (* *) | |
11151 | (* [9] EntityValue ::= '"' ([^%&"] | PEReference | Reference)* '"'*) | |
11152 | (* | "'" ([^%&'] | PEReference | Reference)* "'"*) | |
11153 | (* See also 4.4.5: *) | |
11154 | (* *) | |
11155 | (* When ... a parameter entity reference appears in a literal *) | |
11156 | (* entity value, its replacement text is processed in place of the *) | |
11157 | (* reference itself as though it were part of the document at the *) | |
11158 | (* location the reference was recognized, except that a single or *) | |
11159 | (* double quote character in the replacement text is always treated *) | |
11160 | (* as a normal data character and will not terminate the literal. *) | |
11161 | (* *) | |
11162 | (* and 4.4.7: *) | |
11163 | (* *) | |
11164 | (* When a general entity reference appears in the EntityValue in an *) | |
11165 | (* entity declaration, it is bypassed and left as is. *) | |
11166 | (* *) | |
11167 | (* A bypassed entity ref must, however, be checked for syntactic *) | |
11168 | (* validity, as opposed to SGML, where it is not even recognized. *) | |
11169 | (* *) | |
11170 | (* print an error and end the literal if an entity end is found at *) | |
11171 | (* the toplevel. *) | |
11172 | (* print an error if a general entity reference is ill-formed. *) | |
11173 | (* *) | |
11174 | (* handle any errors in references by ignoring them syntactically. *) | |
11175 | (* *) | |
11176 | (* return argument con applied to the entity value as a char buffer, *) | |
11177 | (* and the remaining char and state. *) | |
11178 | (*--------------------------------------------------------------------*) | |
11179 | (* might raise: none *) | |
11180 | (*--------------------------------------------------------------------*) | |
11181 | fun parseEntityValue' dtd (quote,con) aq = | |
11182 | let fun doit (level,hadCr,lit,text) (c1,a1,q1) = | |
11183 | case c1 | |
11184 | of 0wx00 => if level=0 then let val err = ERR_ENDED_BY_EE LOC_ENT_VALUE | |
11185 | val a2 = hookError(a1,(getPos q1,err)) | |
11186 | in (lit,text,(c1,a2,q1)) | |
11187 | end | |
11188 | else doit (level-1,false,lit,text) (getChar (a1,q1)) | |
11189 | | 0wx25 => (* #"%" *) | |
11190 | let val (level1,lit1,caq2) = | |
11191 | if inDocEntity q1 | |
11192 | then let val err = ERR_FORBIDDEN_HERE(IT_PAR_REF,LOC_INT_DECL) | |
11193 | val a2 = hookError(a1,(getPos q1,err)) | |
11194 | in (level,lit,skipReference (getChar(a2,q1))) | |
11195 | end | |
11196 | else | |
11197 | let val (lit1,((id,ent),(a2,q2))) = | |
11198 | if level=0 then parseParRefLit dtd (c1::lit) (getChar(a1,q1)) | |
11199 | else (lit,parseParRef dtd (getChar(a1,q1))) | |
11200 | in case ent | |
11201 | of PE_NULL => (level,lit1,getChar(a2,q2)) | |
11202 | | PE_INTERN(_,rep) => | |
11203 | let val q3 = pushIntern(q2,id,true,rep) | |
11204 | in (level+1,lit1,getChar(a2,q3)) | |
11205 | end | |
11206 | | PE_EXTERN extId => | |
11207 | let | |
11208 | val fname = resolveExtId extId | |
11209 | val caq3 = #3(openExtern (id,true,fname) (a2,q2)) | |
11210 | in (level+1,lit1,caq3) | |
11211 | end handle CantOpenFile(fmsg,a) | |
11212 | => let val err = ERR_NO_SUCH_FILE fmsg | |
11213 | val a1 = hookError(a,(getPos q1,err)) | |
11214 | in (level,lit1,getChar(a1,q1)) | |
11215 | end | |
11216 | end (* ignore syntax errors in references *) | |
11217 | handle SyntaxError caq => (level,lit,caq) | |
11218 | | NoSuchEntity aq => (level,lit,getChar aq) | |
11219 | in doit (level1,false,lit1,text) caq2 | |
11220 | end | |
11221 | | 0wx26 => (* #"&" *) | |
11222 | let val (c2,a2,q2) = getChar (a1,q1) | |
11223 | in (if c2=0wx23 (* #"#" *) | |
11224 | (*--------------------------------------------------*) | |
11225 | (* it's a character reference. *) | |
11226 | (*--------------------------------------------------*) | |
11227 | then (if level=0 | |
11228 | then | |
11229 | let val (lit3,(ch,a3,q3)) = | |
11230 | parseCharRefLit (c2::c1::lit) (a2,q2) | |
11231 | in doit (level,false,lit3,ch::text) (getChar(a3,q3)) | |
11232 | end | |
11233 | else let val (ch,a3,q3) = parseCharRef (a2,q2) | |
11234 | in doit (level,false,lit,ch::text) (getChar(a3,q3)) | |
11235 | end) | |
11236 | (* ignore errors in char references *) | |
11237 | handle SyntaxError caq => doit (level,false,lit,text) caq | |
11238 | | NoSuchChar aq => doit (level,false,lit,text) (getChar aq) | |
11239 | (*-----------------------------------------------------*) | |
11240 | (* it's a general entity reference. *) | |
11241 | (*-----------------------------------------------------*) | |
11242 | else let | |
11243 | val (fnd,lit3,text3,(c3,a3,q3)) = | |
11244 | parseEntName (c1::lit,c1::text) (c2,a2,q2) | |
11245 | val (lit4,text4,caq4) = | |
11246 | if not fnd then (lit,text,(c3,a3,q3)) | |
11247 | else if c3=0wx3B (* #";" *) | |
11248 | then (c3::lit3,c3::text3,(getChar(a3,q3))) | |
11249 | else let val err = ERR_EXPECTED(expSemi,[c3]) | |
11250 | val a4 = hookError(a3,(getPos q3,err)) | |
11251 | in (lit,text,(c3,a4,q3)) | |
11252 | end | |
11253 | in doit (level,false,lit4,text4) caq4 | |
11254 | end | |
11255 | ) | |
11256 | end | |
11257 | | 0wx0A => doit (level,false,if level=0 then c1::lit else lit, | |
11258 | if hadCr then text else c1::text) (getChar (a1,q1)) | |
11259 | | 0wx0D => doit (level,true,if level=0 then c1::lit else lit,0wx0A::text) | |
11260 | (getChar (a1,q1)) | |
11261 | | _ => if c1=quote andalso level=0 then (lit,text,getChar(a1,q1)) | |
11262 | else doit (level,false,if level=0 then c1::lit else lit,c1::text) | |
11263 | (getChar (a1,q1)) | |
11264 | ||
11265 | val (lit,text,caq1) = doit (0,false,nil,nil) (getChar aq) | |
11266 | val literal = Data2Vector(quote::rev(quote::lit)) | |
11267 | val repText = Data2Vector(rev text) | |
11268 | in | |
11269 | (con(literal,repText),caq1) | |
11270 | end | |
11271 | (*--------------------------------------------------------------------*) | |
11272 | (* parse an entity value. *) | |
11273 | (* *) | |
11274 | (* [9] EntityValue ::= '"' ([^%&"] | PEReference | Reference)* '"'*) | |
11275 | (* | "'" ([^%&'] | PEReference | Reference)* "'"*) | |
11276 | (* *) | |
11277 | (* raise NotFound if neither '"' nor "'" comes first. *) | |
11278 | (* *) | |
11279 | (* return the entity value as a char buffer, and the remaining char *) | |
11280 | (* and state. *) | |
11281 | (*--------------------------------------------------------------------*) | |
11282 | (* might raise: NotFound *) | |
11283 | (*--------------------------------------------------------------------*) | |
11284 | fun parseEntityValue dtd con (c,a,q) = | |
11285 | if c=0wx22 (* "'" *) orelse | |
11286 | c=0wx27 (* '"' *) | |
11287 | then parseEntityValue' dtd (c,con) (a,q) | |
11288 | else raise NotFound (c,a,q) | |
11289 | ||
11290 | (*--------------------------------------------------------------------*) | |
11291 | (* parse and normalize an attribute value, consume the final quote *) | |
11292 | (* character ("'" or '""') passed in the argument. Cf. 2.3: *) | |
11293 | (* *) | |
11294 | (* [10] AttValue ::= '"' ([^<&""] | Reference)* '"' *) | |
11295 | (* | "'" ([^<&'] | Reference)* "'" *) | |
11296 | (* See also 4.4.5: *) | |
11297 | (* *) | |
11298 | (* When an entity reference appears in an attribute value ..., *) | |
11299 | (* its replacement text is processed in place of the reference *) | |
11300 | (* itself as though it were part of the document at the location *) | |
11301 | (* the reference was recognized, except that a single or double *) | |
11302 | (* quote character in the replacement text is always treated as a *) | |
11303 | (* normal data character and will not terminate the literal. *) | |
11304 | (* *) | |
11305 | (* and 3.3.3: *) | |
11306 | (* *) | |
11307 | (* Before the value of an attribute is passed to the application *) | |
11308 | (* or checked for validity, the XML processor must normalize it as *) | |
11309 | (* follows: *) | |
11310 | (* *) | |
11311 | (* * a character reference is processed by appending the referenced *) | |
11312 | (* character to the attribute value *) | |
11313 | (* * an entity reference is processed by recursively processing the *) | |
11314 | (* replacement text of the entity *) | |
11315 | (* * a whitespace character (#x20, #xD, #xA, #x9) is processed by *) | |
11316 | (* appending #x20 to the normalized value, except that only a *) | |
11317 | (* single #x20 is appended for a "#xD#xA" sequence that is part *) | |
11318 | (* of an external parsed entity or the literal entity value of *) | |
11319 | (* an internal parsed entity *) | |
11320 | (* * other characters are processed by appending them to the *) | |
11321 | (* normalized value *) | |
11322 | (* *) | |
11323 | (* since #xD#xA are normalized by the parseEntityValue (internal) and *) | |
11324 | (* getChar (external entities), we don't need to care about that. *) | |
11325 | (*--------------------------------------------------------------------*) | |
11326 | (* print an error and end the literal if an entity end is found. *) | |
11327 | (* print an error if a general entity reference is ill-formed. *) | |
11328 | (* print an error if a reference to an external or unparsed entity is *) | |
11329 | (* found. *) | |
11330 | (* print an error if character '<' appears literally. *) | |
11331 | (* *) | |
11332 | (* handle any errors in references by ignoring them syntactically. *) | |
11333 | (* raise NotFound if neither '"' nor "'" comes first. *) | |
11334 | (* *) | |
11335 | (* return the list of chars in the value, and the next char and state *) | |
11336 | (*--------------------------------------------------------------------*) | |
11337 | (* might raise: NotFound *) | |
11338 | (*--------------------------------------------------------------------*) | |
11339 | fun parseAttValue dtd (quote,a,q) = | |
11340 | let fun doit (lhlt as (level,lit,text)) (c1,a1,q1) = | |
11341 | case c1 | |
11342 | of 0wx00 => if level=0 then let val err = ERR_ENDED_BY_EE LOC_ATT_VALUE | |
11343 | val a2 = hookError(a1,(getPos q1,err)) | |
11344 | in (lit,text,(c1,a2,q1)) | |
11345 | end | |
11346 | else doit (level-1,lit,text) (getChar (a1,q1)) | |
11347 | | 0wx26 => (* #"&" *) | |
11348 | let | |
11349 | val (c2,a2,q2) = getChar (a1,q1) | |
11350 | val ((level1,lit1,text1),caq3) = | |
11351 | (if c2=0wx23 (* #"#" *) | |
11352 | (*--------------------------------------------------*) | |
11353 | (* it's a character reference. *) | |
11354 | (*--------------------------------------------------*) | |
11355 | then if level=0 | |
11356 | then | |
11357 | let val (lit3,(ch,a3,q3)) = | |
11358 | parseCharRefLit (c2::c1::lit) (a2,q2) | |
11359 | in ((level,lit3,ch::text),getChar(a3,q3)) | |
11360 | end | |
11361 | else let val (ch,a3,q3) = parseCharRef (a2,q2) | |
11362 | in ((level,lit,ch::text),getChar (a3,q3)) | |
11363 | end | |
11364 | (*-----------------------------------------------------*) | |
11365 | (* it's a general entity reference. *) | |
11366 | (*-----------------------------------------------------*) | |
11367 | else | |
11368 | let val (lit3,((id,ent),(a3,q3))) = | |
11369 | if level=0 then parseGenRefLit dtd (c1::lit) (c2,a2,q2) | |
11370 | else (nil,parseGenRef dtd (c2,a2,q2)) | |
11371 | in case ent | |
11372 | of GE_NULL => ((level,lit3,text),getChar(a3,q3)) | |
11373 | | GE_INTERN(_,rep) => | |
11374 | let val q4 = pushIntern(q3,id,false,rep) | |
11375 | in ((level+1,lit3,text),getChar (a3,q4)) | |
11376 | end | |
11377 | | GE_EXTERN _ => | |
11378 | let val err = ERR_ILLEGAL_ENTITY | |
11379 | (ENT_EXTERNAL,Index2GenEnt dtd id,LOC_ATT_VALUE) | |
11380 | val a4 = hookError(a3,(getPos q2,err)) | |
11381 | in ((level,lit,text),getChar (a4,q3)) | |
11382 | end | |
11383 | | GE_UNPARSED _ => raise InternalError | |
11384 | (THIS_MODULE,"parseAttValue'", | |
11385 | "parseGenRef returned GE_UNPARSED") | |
11386 | end) | |
11387 | (*------------------------------------------------------*) | |
11388 | (* handle any errors in references by ignoring them. *) | |
11389 | (*------------------------------------------------------*) | |
11390 | handle SyntaxError caq => ((level,lit,text),caq) | |
11391 | | NoSuchEntity aq => ((level,lit,text),getChar aq) | |
11392 | | NoSuchChar aq => ((level,lit,text),getChar aq) | |
11393 | in doit (level1,lit1,text1) caq3 | |
11394 | end | |
11395 | | 0wx3C => let val err = ERR_FORBIDDEN_HERE(IT_CHAR c1,LOC_ATT_VALUE) | |
11396 | val a2 = hookError(a1,(getPos q1,err)) | |
11397 | val lit1 = if level=0 then c1::lit else lit | |
11398 | in doit (level,lit1,c1::text) (getChar (a2,q1)) | |
11399 | end | |
11400 | | _ => if isS c1 then doit (level,if level=0 then c1::lit else lit,0wx20::text) | |
11401 | (getChar (a1,q1)) | |
11402 | else (if c1=quote andalso level=0 then (lit,text,getChar (a1,q1)) | |
11403 | else doit (level,if level=0 then c1::lit else lit,c1::text) | |
11404 | (getChar (a1,q1))) | |
11405 | ||
11406 | ||
11407 | val _ = if quote=0wx22 orelse quote=0wx27 (* "'",'"' *) then () | |
11408 | else raise NotFound (quote,a,q) | |
11409 | val (lit,text,caq1) = doit (0,nil,nil) (getChar(a,q)) | |
11410 | in | |
11411 | (Data2Vector(quote::rev(quote::lit)),rev text,caq1) | |
11412 | end | |
11413 | end | |
11414 | (* stop of ../../Parser/Parse/parseLiterals.sml *) | |
11415 | (* start of ../../Parser/Parse/parseTags.sml *) | |
11416 | signature ParseTags = | |
11417 | sig | |
11418 | (*---------------------------------------------------------------------- | |
11419 | include ParseBase | |
11420 | ||
11421 | val parseName : UniChar.Char * AppData * State | |
11422 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
11423 | val parseNmtoken : UniChar.Char * AppData * State | |
11424 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
11425 | ||
11426 | val parseComment : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
11427 | val parseProcInstr : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
11428 | val skipS : UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
11429 | val skipSopt : UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
11430 | val skipSmay : UniChar.Char * AppData * State -> bool * (UniChar.Char * AppData * State) | |
11431 | ||
11432 | val openExtern : int * Uri.Uri -> AppData * State | |
11433 | -> Encoding.Encoding * HookData.TextDecl option * (UniChar.Char * AppData * State) | |
11434 | val openDocument : Uri.Uri option -> AppData | |
11435 | -> Encoding.Encoding * HookData.XmlDecl option * (UniChar.Char * AppData * State) | |
11436 | val openSubset : Uri.Uri -> AppData | |
11437 | -> Encoding.Encoding * HookData.TextDecl option * (UniChar.Char * AppData * State) | |
11438 | ||
11439 | val skipCharRef : AppData * State -> (UniChar.Char * AppData * State) | |
11440 | val skipReference : UniChar.Char * AppData * State -> (UniChar.Char * AppData * State) | |
11441 | val parseGenRef : Dtd -> UniChar.Char * AppData * State | |
11442 | -> (int * Base.GenEntity) * (AppData * State) | |
11443 | val parseParRef : Dtd -> UniChar.Char * AppData * State | |
11444 | -> (int * Base.ParEntity) * (AppData * State) | |
11445 | val parseCharRefLit : UniChar.Data -> AppData * State | |
11446 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
11447 | val skipPS : Dtd -> UniChar.Char * AppData * State | |
11448 | -> UniChar.Char * AppData * State | |
11449 | val skipPSopt : Dtd -> UniChar.Char * AppData * State | |
11450 | -> UniChar.Char * AppData * State | |
11451 | val skipPSmay : Dtd -> UniChar.Char * AppData * State | |
11452 | -> bool * (UniChar.Char * AppData * State) | |
11453 | val skipPSdec : Dtd -> UniChar.Char * AppData * State | |
11454 | -> bool * (UniChar.Char * AppData * State) | |
11455 | ||
11456 | val parseSystemLiteral : UniChar.Char * AppData * State | |
11457 | -> Uri.Uri * UniChar.Char * (UniChar.Char * AppData * State) | |
11458 | val parsePubidLiteral : UniChar.Char * AppData * State | |
11459 | -> string * UniChar.Char * (UniChar.Char * AppData * State) | |
11460 | val parseAttValue : Dtd -> UniChar.Char * AppData * State | |
11461 | -> UniChar.Vector * UniChar.Data * (UniChar.Char * AppData * State) | |
11462 | val parseEntityValue : Dtd -> (UniChar.Vector * UniChar.Vector -> 'a) | |
11463 | -> UniChar.Char * AppData * State | |
11464 | -> 'a * (UniChar.Char * AppData * State) | |
11465 | ----------------------------------------------------------------------*) | |
11466 | include ParseLiterals | |
11467 | ||
11468 | val skipTag : Errors.Location -> AppData * State -> (UniChar.Char * AppData * State) | |
11469 | ||
11470 | val parseETag : Dtd -> AppData * State | |
11471 | -> int * UniChar.Data * Errors.Position * (UniChar.Char * AppData * State) | |
11472 | val parseSTag : Dtd -> Errors.Position -> UniChar.Char * AppData * State | |
11473 | -> (HookData.StartTagInfo * Base.ElemInfo) * (UniChar.Char * AppData * State) | |
11474 | end | |
11475 | ||
11476 | (*--------------------------------------------------------------------------*) | |
11477 | (* Structure: ParseTags *) | |
11478 | (* *) | |
11479 | (* Exceptions raised by functions in this structure: *) | |
11480 | (* skipTag : none *) | |
11481 | (* parseETag : SyntaxState *) | |
11482 | (* parseSTag : SyntaxState *) | |
11483 | (*--------------------------------------------------------------------------*) | |
11484 | functor ParseTags (structure ParseBase : ParseBase) | |
11485 | : ParseTags = | |
11486 | struct | |
11487 | structure ParseLiterals = ParseLiterals (structure ParseBase = ParseBase) | |
11488 | ||
11489 | open | |
11490 | UtilList | |
11491 | Base Errors UniClasses | |
11492 | ParseLiterals | |
11493 | ||
11494 | (*--------------------------------------------------------------------*) | |
11495 | (* parse an end-tag, the "</" already read. 3.1: *) | |
11496 | (* *) | |
11497 | (* [42] ETag ::= '</' Name S? '>' *) | |
11498 | (* *) | |
11499 | (* and 3. states: *) | |
11500 | (* *) | |
11501 | (* Validity Constraint: Element Valid *) | |
11502 | (* An element is valid if there is a declaration matching elementdecl *) | |
11503 | (* where the Name matches the element type, and ... *) | |
11504 | (* *) | |
11505 | (* print an error, recover and raise SyntaxState if no name is found. *) | |
11506 | (* print an error and recover if no ">" is found. *) | |
11507 | (* print an error if the element is not declared. *) | |
11508 | (* *) | |
11509 | (* return the index of the element, and the next char and state. *) | |
11510 | (*--------------------------------------------------------------------*) | |
11511 | (* might raise: SyntaxState *) | |
11512 | (*--------------------------------------------------------------------*) | |
11513 | fun parseETag dtd aq = | |
11514 | let | |
11515 | val caq0 as (_,_,q0) = getChar aq | |
11516 | val (elem,(c1,a1,q1)) = parseName caq0 | |
11517 | handle NotFound (c,a,q) => let val err = expectedOrEnded (expAName,LOC_ETAG) c | |
11518 | val a1 = hookError(a,(getPos q,err)) | |
11519 | val caq1 = recoverETag (c,a1,q) | |
11520 | in raise SyntaxError caq1 | |
11521 | end | |
11522 | val idx = Element2Index dtd elem | |
11523 | val elemInfo as {decl,...} = getElement dtd idx | |
11524 | val a1' = if isSome decl then a1 | |
11525 | else let val a2 = if not (!O_VALIDATE andalso hasDtd dtd) then a1 | |
11526 | else let val err = ERR_UNDECLARED(IT_ELEM,elem,LOC_ETAG) | |
11527 | val a1' = hookError(a1,(getPos q0,err)) | |
11528 | val _ = if not (!O_ERROR_MINIMIZE) then () | |
11529 | else ignore (handleUndeclElement dtd idx) | |
11530 | in a1' | |
11531 | end | |
11532 | in checkElemName (a2,q0) elem | |
11533 | end | |
11534 | ||
11535 | val (cs,(c2,a2,q2)) = parseSopt nil (c1,a1',q1) | |
11536 | val space = rev cs | |
11537 | in | |
11538 | if c2=0wx3E (* #">" *) then (idx,space,getPos q2,getChar(a2,q2)) | |
11539 | else let val err = expectedOrEnded (expGt,LOC_ETAG) c2 | |
11540 | val a3 = hookError(a2,(getPos q2,err)) | |
11541 | val caq3 = recoverETag(c2,a3,q2) | |
11542 | in (idx,space,getPos q2,caq3) | |
11543 | end | |
11544 | end | |
11545 | ||
11546 | (*--------------------------------------------------------------------*) | |
11547 | (* parse a start-tag or an empty-element-tag, the "<" already read. *) | |
11548 | (* 3.1: *) | |
11549 | (* *) | |
11550 | (* [40] STag ::= '<' Name (S Attribute)* S? '>' *) | |
11551 | (* [ WFC: Unique Att Spec ] *) | |
11552 | (* [41] Attribute ::= Name Eq AttValue [ VC: Attribute Value Type ] *) | |
11553 | (* *) | |
11554 | (* Well-Formedness Constraint: Unique Att Spec *) | |
11555 | (* No attribute name may appear more than once in the same *) | |
11556 | (* start-tag or empty-element tag. *) | |
11557 | (* *) | |
11558 | (* Validity Constraint: Attribute Value Type *) | |
11559 | (* The attribute must have been declared; the value must be of the *) | |
11560 | (* type declared for it. *) | |
11561 | (* *) | |
11562 | (* [44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>' *) | |
11563 | (* [ WFC: Unique Att Spec ] *) | |
11564 | (* *) | |
11565 | (* and 3. states: *) | |
11566 | (* *) | |
11567 | (* Validity Constraint: Element Valid *) | |
11568 | (* An element is valid if there is a declaration matching elementdecl *) | |
11569 | (* where the Name matches the element type, and ... *) | |
11570 | (* *) | |
11571 | (* catch entity end exceptions in subfunctions by printing an error *) | |
11572 | (* and re-raising the exception. *) | |
11573 | (* *) | |
11574 | (* print an error, recover and raise SyntaxState if no element name *) | |
11575 | (* is found. *) | |
11576 | (* print an error and recover if no ">" or "/>" is found. *) | |
11577 | (* print an error and continue if no "=" is found after an att name. *) | |
11578 | (* print an error and recover if no literal is found after the "=". *) | |
11579 | (* print an error if white space is missing. *) | |
11580 | (* print an error if the element is not declared. *) | |
11581 | (* print an error and ignore the attribute if an attribute is *) | |
11582 | (* specified twice. *) | |
11583 | (* print an error if an attribute is not declared. *) | |
11584 | (* *) | |
11585 | (* return the index of the element, its ElemInfo, the list of *) | |
11586 | (* AttSpecs (specified and omitted atts) and a boolean whether it was *) | |
11587 | (* an empty-element-tag, together with the next char and state. *) | |
11588 | (*--------------------------------------------------------------------*) | |
11589 | (* might raise: SyntaxState *) | |
11590 | (*--------------------------------------------------------------------*) | |
11591 | fun parseSTag dtd startPos (caq as (_,_,q)) = | |
11592 | let | |
11593 | val (elem,(c1,a1,q1)) = parseName caq | |
11594 | handle NotFound (c,a,q) => let val err = expectedOrEnded (expAName,LOC_STAG) c | |
11595 | val a1 = hookError(a,(getPos q,err)) | |
11596 | val (_,caq1) = recoverSTag (c,a1,q) | |
11597 | in raise SyntaxError (c,a1,q) | |
11598 | end | |
11599 | val eidx = Element2Index dtd elem | |
11600 | val elemInfo as {atts,decl,...} = getElement dtd eidx | |
11601 | val defs = case atts | |
11602 | of NONE => nil | |
11603 | | SOME (defs,_) => defs | |
11604 | val (a1',elemInfo) = | |
11605 | if isSome decl then (a1,elemInfo) | |
11606 | else | |
11607 | let val (a2,newInfo) = | |
11608 | if not (!O_VALIDATE andalso hasDtd dtd) then (a1,elemInfo) | |
11609 | else let val err = ERR_UNDECLARED(IT_ELEM,elem,LOC_STAG) | |
11610 | val a1' = hookError(a1,(getPos q,err)) | |
11611 | val newInfo = if not (!O_ERROR_MINIMIZE) then elemInfo | |
11612 | else handleUndeclElement dtd eidx | |
11613 | in (a1',newInfo) | |
11614 | end | |
11615 | in (checkElemName (a2,q) elem,newInfo) | |
11616 | end | |
11617 | ||
11618 | val hscaq2 = parseSmay nil (c1,a1',q1) | |
11619 | ||
11620 | (*--------------------------------------------------------------*) | |
11621 | (* yet are the indices of attributes encountered yet, old are *) | |
11622 | (* the valid attributes specified yet, and todo are the defs of *) | |
11623 | (* attributes yet to be specified. hadS indicates whether white *) | |
11624 | (* space preceded. *) | |
11625 | (*--------------------------------------------------------------*) | |
11626 | fun doit (yet,old,todo) (hadS,(sp,(c,a,q))) = | |
11627 | case c | |
11628 | of 0wx3E (* #">" *) => (old,todo,sp,false,q,getChar(a,q)) | |
11629 | | 0wx2F (* #"/" *) => | |
11630 | let val (c1,a1,q1) = getChar(a,q) | |
11631 | in if c1=0wx3E (* #">" *) then (old,todo,sp,true,q1,getChar(a1,q1)) | |
11632 | else let val err = expectedOrEnded (expGt,LOC_STAG) c1 | |
11633 | val a2 = hookError(a1,(getPos q1,err)) | |
11634 | val (mt,caq2) = recoverSTag (c1,a2,q1) | |
11635 | in (old,todo,sp,mt,q,caq2) | |
11636 | end | |
11637 | end | |
11638 | | _ => | |
11639 | if not (isNms c) | |
11640 | then let val err = expectedOrEnded (expAttSTagEnd,LOC_STAG) c | |
11641 | val a1 = hookError(a,(getPos q,err)) | |
11642 | val (mt,caq1) = recoverSTag (c,a1,q) | |
11643 | in (old,todo,sp,mt,q,caq1) | |
11644 | end | |
11645 | else | |
11646 | let(* first parse the name of the attribute *) | |
11647 | val (att,(c1,a1,q1)) = parseName (c,a,q) | |
11648 | val a2 = if hadS then a1 | |
11649 | else hookError(a1,(getPos q,ERR_MISSING_WHITE)) | |
11650 | ||
11651 | (* now get its index, check whether it already *) | |
11652 | (* occurred and get its definition. *) | |
11653 | val aidx = AttNot2Index dtd att | |
11654 | val (hadIt,a3) = | |
11655 | if member aidx yet | |
11656 | then (true,hookError(a2,(getPos q,ERR_MULT_ATT_SPEC att))) | |
11657 | else (false,a2) | |
11658 | ||
11659 | val (def,rest) = findAndDelete (fn (i,_,_,_) => i=aidx) todo | |
11660 | val a4 = if isSome def orelse hadIt then a3 | |
11661 | else handleUndeclAtt dtd (a3,q) (aidx,att,eidx,elem) | |
11662 | ||
11663 | (* consume the " = ", ignore errors *) | |
11664 | val (eq,caq5 as (_,_,q5)) = parseEq (c1,a4,q1) | |
11665 | handle SyntaxError caq => ([0wx3D],caq) | |
11666 | ||
11667 | (* now parse the attribute value *) | |
11668 | val (literal,value,(c6,a6,q6)) = parseAttValue dtd caq5 | |
11669 | ||
11670 | (* possibly make a new AttSpec *) | |
11671 | val space = rev sp | |
11672 | val (new,a7) = | |
11673 | if hadIt then (old,a6) | |
11674 | else case def | |
11675 | of NONE => | |
11676 | if !O_VALIDATE andalso hasDtd dtd then (old,a6) | |
11677 | else (let val (attVal,a7) = checkAttValue dtd (a6,q5) | |
11678 | (defaultAttDef aidx,literal,value) | |
11679 | in ((aidx,attVal,SOME(space,eq))::old,a7) | |
11680 | end | |
11681 | handle AttValue a => (old,a)) | |
11682 | | SOME ad => | |
11683 | let val (attVal,a7) = checkAttValue dtd (a6,q5) | |
11684 | (ad,literal,value) | |
11685 | in ((aidx,attVal,SOME(space,eq))::old,a7) | |
11686 | end | |
11687 | handle AttValue a => (old,a) | |
11688 | val hscaq8 = parseSmay nil (c6,a7,q6) | |
11689 | in | |
11690 | doit (aidx::yet,new,rest) hscaq8 | |
11691 | end | |
11692 | handle NotFound (c,a,q) (* raised by parseAttValue above *) | |
11693 | => let val err = expectedOrEnded (expLitQuote,LOC_STAG) c | |
11694 | val a1 = hookError(a,(getPos q,err)) | |
11695 | val (mt,caq1) = recoverSTag (c,a1,q) | |
11696 | in (old,todo,sp,mt,q,caq1) | |
11697 | end | |
11698 | ||
11699 | val (specd,todo,sp,empty,qe,(c3,a3,q3)) = doit (nil,nil,defs) hscaq2 | |
11700 | val space = rev sp | |
11701 | ||
11702 | (* generate the defaults for unspecified attributes *) | |
11703 | val (all,a4) = genMissingAtts dtd (a3,qe) (todo,rev specd) | |
11704 | in | |
11705 | ((((startPos,getPos q3),eidx,all,space,empty),elemInfo),(c3,a4,q3)) | |
11706 | end | |
11707 | ||
11708 | (*--------------------------------------------------------------------*) | |
11709 | (* skip a tag, the initial "<" or "</" already read, the first arg *) | |
11710 | (* being a string describing the tag. *) | |
11711 | (* don't care about whether it is a start- or end-tag. Ignore ">" and *) | |
11712 | (* "/>" if within a literal. *) | |
11713 | (* *) | |
11714 | (* print an error and finish if an entity end is found. *) | |
11715 | (* *) | |
11716 | (* return the remaining char and state. *) | |
11717 | (*--------------------------------------------------------------------*) | |
11718 | (* might raise: none *) | |
11719 | (*--------------------------------------------------------------------*) | |
11720 | fun skipTag loc aq = | |
11721 | let | |
11722 | fun do_lit ch (c,a,q) = | |
11723 | if c=0wx00 then let val a1 = hookError(a,(getPos q,ERR_ENDED_BY_EE loc)) | |
11724 | in (c,a1,q) | |
11725 | end | |
11726 | else if c=ch then doit (getChar(a,q)) | |
11727 | else do_lit ch (getChar(a,q)) | |
11728 | ||
11729 | and doit (c,a,q) = | |
11730 | case c | |
11731 | of 0wx00 => let val a1 = hookError(a,(getPos q,ERR_ENDED_BY_EE loc)) | |
11732 | in (c,a1,q) | |
11733 | end | |
11734 | | 0wx22 (* #"\""*) => do_lit c (getChar(a,q)) | |
11735 | | 0wx27 (* #"'" *) => do_lit c (getChar(a,q)) | |
11736 | | 0wx2F (* #"/" *) => (case getChar(a,q) | |
11737 | of (0wx3E,a1,q1) (* #">" *) => getChar(a1,q1) | |
11738 | | caq1 => doit caq1) | |
11739 | | 0wx3E (* #">" *) => getChar(a,q) | |
11740 | | _ => doit(getChar(a,q)) | |
11741 | in doit (getChar aq) | |
11742 | end | |
11743 | end | |
11744 | ||
11745 | (* stop of ../../Parser/Parse/parseTags.sml *) | |
11746 | (* start of ../../Parser/Parse/parseDecl.sml *) | |
11747 | signature ParseDecl = | |
11748 | sig | |
11749 | (*---------------------------------------------------------------------- | |
11750 | include ParseBase | |
11751 | ||
11752 | val parseName : UniChar.Char * AppData * State | |
11753 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
11754 | ||
11755 | val parseComment : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
11756 | val parseProcInstr : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
11757 | val skipS : UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
11758 | val skipSopt : UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
11759 | val skipSmay : UniChar.Char * AppData * State -> bool * (UniChar.Char * AppData * State) | |
11760 | ||
11761 | val openExtern : int * Uri.Uri -> AppData * State | |
11762 | -> Encoding.Encoding * HookData.TextDecl option * (UniChar.Char * AppData * State) | |
11763 | val openDocument : Uri.Uri option -> AppData | |
11764 | -> Encoding.Encoding * HookData.XmlDecl option * (UniChar.Char * AppData * State) | |
11765 | val openSubset : Uri.Uri -> AppData | |
11766 | -> Encoding.Encoding * HookData.TextDecl option * (UniChar.Char * AppData * State) | |
11767 | ||
11768 | val skipCharRef : AppData * State -> (UniChar.Char * AppData * State) | |
11769 | val skipReference : UniChar.Char * AppData * State -> (UniChar.Char * AppData * State) | |
11770 | val parseGenRef : Dtd -> UniChar.Char * AppData * State | |
11771 | -> (int * Base.GenEntity) * (AppData * State) | |
11772 | val parseParRef : Dtd -> UniChar.Char * AppData * State | |
11773 | -> (int * Base.ParEntity) * (AppData * State) | |
11774 | val parseCharRefLit : UniChar.Data -> AppData * State | |
11775 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
11776 | val skipPSopt : Dtd -> UniChar.Char * AppData * State | |
11777 | -> UniChar.Char * AppData * State | |
11778 | ||
11779 | val skipTag : Errors.Location -> AppData * State -> (UniChar.Char * AppData * State) | |
11780 | val parseETag : Dtd -> AppData * State | |
11781 | -> int * UniChar.Data * Errors.Position * (UniChar.Char * AppData * State) | |
11782 | val parseSTag : Dtd -> Errors.Position -> UniChar.Char * AppData * State | |
11783 | -> (HookData.StartTagInfo * Base.ElemInfo) * (UniChar.Char * AppData * State) | |
11784 | ----------------------------------------------------------------------*) | |
11785 | include ParseTags | |
11786 | ||
11787 | val skipDecl : bool -> UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
11788 | ||
11789 | val parseExtIdSub : Dtd -> UniChar.Char * AppData * State | |
11790 | -> Base.ExternalId * bool * (UniChar.Char * AppData * State) | |
11791 | ||
11792 | val parseEntityDecl : Dtd -> EntId * Errors.Position * bool | |
11793 | -> UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
11794 | val parseElementDecl : Dtd -> EntId * Errors.Position * bool | |
11795 | -> UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
11796 | val parseNotationDecl : Dtd -> EntId * Errors.Position * bool | |
11797 | -> UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
11798 | val parseAttListDecl : Dtd -> EntId * Errors.Position * bool | |
11799 | -> UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
11800 | end | |
11801 | ||
11802 | (*--------------------------------------------------------------------------*) | |
11803 | (* Structure: ParseDecl *) | |
11804 | (* *) | |
11805 | (* Exceptions raised by functions in this structure: *) | |
11806 | (* skipDecl : none *) | |
11807 | (* parseExtIdSub : NotFound SyntaxError *) | |
11808 | (* parseEntityDecl : none *) | |
11809 | (* parseElementDecl : none *) | |
11810 | (* parseNotationDecl : none *) | |
11811 | (* parseAttListDecl : none *) | |
11812 | (*--------------------------------------------------------------------------*) | |
11813 | functor ParseDecl (structure ParseBase : ParseBase) | |
11814 | : ParseDecl = | |
11815 | struct | |
11816 | structure ParseTags = ParseTags (structure ParseBase = ParseBase) | |
11817 | ||
11818 | open | |
11819 | UtilInt UtilList | |
11820 | Base Errors HookData | |
11821 | ParseTags | |
11822 | ||
11823 | (*--------------------------------------------------------------------*) | |
11824 | (* skip a markup declaration, the initial "<!" and name already read. *) | |
11825 | (* ignore ">" if within a literal. yake care of internal subset if *) | |
11826 | (* the first arg is true. *) | |
11827 | (* *) | |
11828 | (* print an error and finish if an entity end is found. *) | |
11829 | (* *) | |
11830 | (* return the remaining char and state. *) | |
11831 | (*--------------------------------------------------------------------*) | |
11832 | (* might raise: none *) | |
11833 | (*--------------------------------------------------------------------*) | |
11834 | fun skipDecl hasSubset caq = | |
11835 | let | |
11836 | fun do_lit ch (c,a,q) = | |
11837 | if c=0wx00 then (c,a,q) | |
11838 | else if c=ch then getChar (a,q) | |
11839 | else do_lit ch (getChar(a,q)) | |
11840 | fun do_decl (c,a,q) = | |
11841 | case c | |
11842 | of 0wx00 => (c,a,q) | |
11843 | | 0wx22 (* #"\""" *) => do_decl (do_lit c (getChar(a,q))) | |
11844 | | 0wx27 (* #"'" *) => do_decl (do_lit c (getChar(a,q))) | |
11845 | | 0wx3E (* #">" *) => getChar(a,q) | |
11846 | | _ => do_decl (getChar(a,q)) | |
11847 | fun do_subset (c,a,q) = | |
11848 | case c | |
11849 | of 0wx00 => (c,a,q) | |
11850 | | 0wx3C (* #"<" *) => do_subset (do_decl (getChar(a,q))) | |
11851 | | 0wx5D (* #"]" *) => getChar(a,q) | |
11852 | | _ => do_subset (getChar(a,q)) | |
11853 | fun doit (c,a,q) = | |
11854 | case c | |
11855 | of 0wx00 => (c,hookError(a,(getPos q,ERR_ENDED_BY_EE LOC_DECL)),q) | |
11856 | | 0wx22 (* #"\"""*) => doit (do_lit c (getChar(a,q))) | |
11857 | | 0wx27 (* #"'" *) => doit (do_lit c (getChar(a,q))) | |
11858 | | 0wx3E (* #">" *) => getChar(a,q) | |
11859 | | 0wx5B (* #"[" *) => if hasSubset then doit (do_subset (getChar(a,q))) | |
11860 | else doit (getChar(a,q)) | |
11861 | | _ => doit (getChar(a,q)) | |
11862 | in doit caq | |
11863 | end | |
11864 | ||
11865 | (*--------------------------------------------------------------------*) | |
11866 | (* parse an external id, or a public id if the first arg is true. *) | |
11867 | (* Cf. 4.2.2 and 4.7: *) | |
11868 | (* *) | |
11869 | (* [75] ExternalID ::= 'SYSTEM' S SystemLiteral *) | |
11870 | (* | 'PUBLIC' S PubidLiteral S SystemLiteral *) | |
11871 | (* *) | |
11872 | (* [83] PublicID ::= 'PUBLIC' S PubidLiteral *) | |
11873 | (* *) | |
11874 | (* raise NotFound if no name is found first. *) | |
11875 | (* print an error if white space is missing. *) | |
11876 | (* print an error and raise SyntaxState if a wrong name is found. *) | |
11877 | (* print an Error and raise SyntaxState if a required literal is not *) | |
11878 | (* found (depends on optSys). *) | |
11879 | (* *) | |
11880 | (* return the public and system identifiers as string options, *) | |
11881 | (* a boolean, whether whit space followed the external id, *) | |
11882 | (* and the next character and the remaining state. *) | |
11883 | (*--------------------------------------------------------------------*) | |
11884 | (* might raise: NotFound SyntaxState *) | |
11885 | (*--------------------------------------------------------------------*) | |
11886 | fun parseExternalId dtd optSys (caq as (_,_,q))= | |
11887 | let | |
11888 | (* do not handle NotFound: in this case no extId was found *) | |
11889 | val (name,caq1) = parseName caq | |
11890 | val caq2 as (_,_,q2)= skipPS dtd caq1 | |
11891 | in | |
11892 | case name | |
11893 | of [0wx50,0wx55,0wx42,0wx4c,0wx49,0wx43] => (* "PUBLIC" *) | |
11894 | let | |
11895 | val (pub,pquote,caq3) = parsePubidLiteral caq2 | |
11896 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expLitQuote,[c]) | |
11897 | val a1 = hookError(a,(getPos q,err)) | |
11898 | in raise SyntaxError (c,a1,q) | |
11899 | end | |
11900 | val (hadS,caq4 as (_,_,q4)) = skipPSmay dtd caq3 | |
11901 | in let | |
11902 | val (sys,squote,(c5,a5,q5)) = parseSystemLiteral caq4 | |
11903 | val base = getUri q4 | |
11904 | val a6 = if hadS then a5 else hookError(a5,(getPos q4,ERR_MISSING_WHITE)) | |
11905 | val (hadS6,caq6) = skipPSmay dtd (c5,a6,q5) | |
11906 | in | |
11907 | (EXTID(SOME(pub,pquote),SOME(base,sys,squote)),hadS6,caq6) | |
11908 | end | |
11909 | handle NotFound (c,a,q) => (* no system id *) | |
11910 | if optSys then (EXTID(SOME(pub,pquote),NONE),hadS,(c,a,q)) | |
11911 | else let val a1 = hookError(a,(getPos q,ERR_EXPECTED(expLitQuote,[c]))) | |
11912 | in raise SyntaxError (c,a1,q) | |
11913 | end | |
11914 | end | |
11915 | ||
11916 | | [0wx53,0wx59,0wx53,0wx54,0wx45,0wx4d] => (* "SYSTEM" *) | |
11917 | let | |
11918 | val (sys,squote,caq3) = parseSystemLiteral caq2 | |
11919 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expLitQuote,[c]) | |
11920 | val a1 = hookError(a,(getPos q,err)) | |
11921 | in raise SyntaxError (c,a1,q) | |
11922 | end | |
11923 | val base = getUri q2 | |
11924 | val (hadS,caq4) = skipPSmay dtd caq3 | |
11925 | in | |
11926 | (EXTID(NONE,SOME(base,sys,squote)),hadS,caq4) | |
11927 | end | |
11928 | ||
11929 | | _ => let val (c2,a2,q2) = caq2 | |
11930 | val a3 = hookError(a2,(getPos q,ERR_EXPECTED(expExtId,name))) | |
11931 | in raise SyntaxError (c2,a3,q2) | |
11932 | end | |
11933 | end | |
11934 | (*--------------------------------------------------------------------*) | |
11935 | (* parse an external id in an entity definition. Cf. 4.2.2: *) | |
11936 | (* *) | |
11937 | (* print an Error and raise SyntaxState if no external id is found. *) | |
11938 | (*--------------------------------------------------------------------*) | |
11939 | (* might raise: SyntaxState *) | |
11940 | (*--------------------------------------------------------------------*) | |
11941 | fun parseExtIdEnt dtd caq = parseExternalId dtd false caq | |
11942 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expLitQuotExt,[c]) | |
11943 | in raise SyntaxError (c,hookError(a,(getPos q,err)),q) | |
11944 | end | |
11945 | (*--------------------------------------------------------------------*) | |
11946 | (* parse an external or public id in a notation declaration. *) | |
11947 | (* *) | |
11948 | (* print an Error and raise SyntaxState if neither external nor *) | |
11949 | (* public id is found. *) | |
11950 | (*--------------------------------------------------------------------*) | |
11951 | (* might raise: SyntaxState *) | |
11952 | (*--------------------------------------------------------------------*) | |
11953 | fun parseExtIdNot dtd caq = parseExternalId dtd true caq | |
11954 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expExtId,[c]) | |
11955 | in raise SyntaxError (c,hookError(a,(getPos q,err)),q) | |
11956 | end | |
11957 | (*--------------------------------------------------------------------*) | |
11958 | (* parse an external id for the external subset. *) | |
11959 | (* *) | |
11960 | (* raise NotFound if no external id is found. *) | |
11961 | (*--------------------------------------------------------------------*) | |
11962 | (* might raise: NotFound SyntaxState *) | |
11963 | (*--------------------------------------------------------------------*) | |
11964 | fun parseExtIdSub dtd caq = parseExternalId dtd false caq | |
11965 | ||
11966 | (*--------------------------------------------------------------------*) | |
11967 | (* parse a parameter entity declaration, starting after the '%'. The *) | |
11968 | (* unique entity id of the initial '<' is given as first arg. 4.2: *) | |
11969 | (* *) | |
11970 | (* [72] PEDecl ::= '<!ENTITY' S '%' S Name S PEDef S? '>' *) | |
11971 | (* [74] PEDef ::= EntityValue | ExternalID *) | |
11972 | (* *) | |
11973 | (* (see also the comments for ParseDtd.parseMarkupDecl). *) | |
11974 | (* *) | |
11975 | (* print an error if white space is missing. *) | |
11976 | (* print an error and raise SyntaxState if neither entity value nor *) | |
11977 | (* external identifier is found. *) | |
11978 | (* print an error and raise SyntaxState if the closing '>' is missing.*) | |
11979 | (* print an error if the '>' is not in the same entity as the '<!'. *) | |
11980 | (* *) | |
11981 | (* enter the declared entity into the entity table. *) | |
11982 | (* return the remaining char and state. *) | |
11983 | (*--------------------------------------------------------------------*) | |
11984 | (* might raise: SyntaxState *) | |
11985 | (*--------------------------------------------------------------------*) | |
11986 | fun parseParEntDecl dtd (startEnt,startPos,ext) caq = | |
11987 | let | |
11988 | val caq1 as (_,_,q1) = skipPS dtd caq | |
11989 | ||
11990 | val (name,caq2) = parseName caq1 | |
11991 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expAnEntName,[c]) | |
11992 | in raise SyntaxError (c,hookError(a,(getPos q,err)),q) | |
11993 | end | |
11994 | val idx = ParEnt2Index dtd name | |
11995 | val caq3 = skipPS dtd caq2 | |
11996 | ||
11997 | val (ent,(c4,a4,q4)) = | |
11998 | let val (ent,caq4) = parseEntityValue dtd PE_INTERN caq3 | |
11999 | val caq5 = skipPSopt dtd caq4 | |
12000 | in (ent,caq5) | |
12001 | end | |
12002 | handle NotFound caq => | |
12003 | let val (extId,_,caq1) = parseExtIdEnt dtd caq | |
12004 | in (PE_EXTERN extId,caq1) | |
12005 | end | |
12006 | ||
12007 | val a5 = if useParamEnts() orelse not ext then addParEnt dtd (a4,q1) (idx,ent,ext) else a4 | |
12008 | val a6 = hookDecl(a5,((startPos,getPos q4),DEC_PAR_ENT(idx,ent,ext))) | |
12009 | in | |
12010 | if c4<>0wx3E (* #">" *) | |
12011 | then let val a7 = hookError(a6,(getPos q4,ERR_EXPECTED(expGt,[c4]))) | |
12012 | in raise SyntaxError(c4,a7,q4) | |
12013 | end | |
12014 | else let val a7 = if not (!O_VALIDATE) orelse getEntId q4=startEnt then a6 | |
12015 | else hookError(a6,(getPos q4,ERR_DECL_ENT_NESTING LOC_ENT_DECL)) | |
12016 | in getChar(a7,q4) | |
12017 | end | |
12018 | end | |
12019 | ||
12020 | (*--------------------------------------------------------------------*) | |
12021 | (* parse a general entity declaration, starting with the name. The *) | |
12022 | (* unique entity id of the initial '<' is given as first arg. 4.2: *) | |
12023 | (* *) | |
12024 | (* [71] GEDecl ::= '<!ENTITY' S Name S EntityDef S? '>' *) | |
12025 | (* [73] EntityDef ::= EntityValue | (ExternalID NDataDecl?) *) | |
12026 | (* *) | |
12027 | (* [76] NDataDecl ::= S 'NDATA' S Name [ VC: Notation *) | |
12028 | (* Declared ] *) | |
12029 | (* *) | |
12030 | (* If the NDataDecl is present, this is a general unparsed entity; *) | |
12031 | (* otherwise it is a parsed entity. *) | |
12032 | (* *) | |
12033 | (* Validity Constraint: Notation Declared *) | |
12034 | (* The Name must match the declared name of a notation. *) | |
12035 | (* *) | |
12036 | (* (see also the comments for ParseDtd.parseMarkupDecl). *) | |
12037 | (* *) | |
12038 | (* print an error if white space is missing. *) | |
12039 | (* print an error and raise SyntaxState if neither entity value nor *) | |
12040 | (* external identifier is found. *) | |
12041 | (* print an error if name other then 'NDATA' is found after ext. id. *) | |
12042 | (* print an error and raise SyntaxState if no name is found after the *) | |
12043 | (* 'NDATA'. *) | |
12044 | (* print an error if the notation is not declared. *) | |
12045 | (* print an error and raise SyntaxState if the closing '>' is missing.*) | |
12046 | (* print an error if the '>' is not in the same entity as the '<!'. *) | |
12047 | (* *) | |
12048 | (* enter the declared entity into the entity table. *) | |
12049 | (* return the remaining char and state. *) | |
12050 | (*--------------------------------------------------------------------*) | |
12051 | (* might raise: SyntaxState *) | |
12052 | (*--------------------------------------------------------------------*) | |
12053 | fun parseGenEntDecl dtd (startEnt,startPos,ext) (caq as (_,_,q)) = | |
12054 | let | |
12055 | val (name,caq1) = parseName caq | |
12056 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expEntNamePero,[c]) | |
12057 | in raise SyntaxError (c,hookError(a,(getPos q,err)),q) | |
12058 | end | |
12059 | val idx = GenEnt2Index dtd name | |
12060 | val caq2 = skipPS dtd caq1 | |
12061 | ||
12062 | val (ent,expEnd,(c3,a3,q3)) = | |
12063 | (*-----------------------------------------------------------*) | |
12064 | (* Try for an internal entity. Then '>' must follow. *) | |
12065 | (*-----------------------------------------------------------*) | |
12066 | let | |
12067 | val (ent,caq3) = parseEntityValue dtd GE_INTERN caq2 | |
12068 | val caq4 = skipPSopt dtd caq3 | |
12069 | in | |
12070 | (ent,expGt,caq4) | |
12071 | end | |
12072 | handle NotFound cq => (* raised by parseEntityValue *) | |
12073 | (*-----------------------------------------------------------*) | |
12074 | (* Must be external. First parse the external identifier. *) | |
12075 | (*-----------------------------------------------------------*) | |
12076 | let | |
12077 | val (extId,hadS,caq1 as (_,_,q1)) = parseExtIdEnt dtd caq2 | |
12078 | in let | |
12079 | (*-----------------------------------------------------*) | |
12080 | (* Does a name follow? Then is must be 'NDATA' and the *) | |
12081 | (* notation name follows. Thus the entity is unparsed. *) | |
12082 | (* Also, only '>' may come next. *) | |
12083 | (* NotFound is handled at the end of the let. *) | |
12084 | (*-----------------------------------------------------*) | |
12085 | val (key,(c2,a2,q2)) = parseName caq1 | |
12086 | val a3 = if hadS then a2 else hookError(a2,(getPos q1,ERR_MISSING_WHITE)) | |
12087 | val a4 = if key = [0wx4e,0wx44,0wx41,0wx54,0wx41] (* "NDATA" *) then a3 | |
12088 | else hookError(a3,(getPos q1,ERR_EXPECTED(expGtNdata,key))) | |
12089 | ||
12090 | val caq5 as (_,_,q5) = skipPS dtd (c2,a4,q2) | |
12091 | ||
12092 | val (not,caq6) = parseName caq5 | |
12093 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expANotName,[c]) | |
12094 | val a1 = hookError(a,(getPos q,err)) | |
12095 | in raise SyntaxError (c,a1,q) | |
12096 | end | |
12097 | val notIdx = AttNot2Index dtd not | |
12098 | val caq7 = skipPSopt dtd caq6 | |
12099 | in | |
12100 | (GE_UNPARSED(extId,notIdx,getPos q5),expGt,caq7) | |
12101 | end | |
12102 | handle NotFound caq => | |
12103 | (*--------------------------------------------------------*) | |
12104 | (* No 'NDATA' present, so it's parsed external entity. *) | |
12105 | (* A 'NDATA' might have followed. *) | |
12106 | (*--------------------------------------------------------*) | |
12107 | (GE_EXTERN extId,expGtNdata,caq) | |
12108 | end | |
12109 | ||
12110 | val a4 = if useParamEnts() orelse not ext then addGenEnt dtd (a3,q) (idx,ent,ext) else a3 | |
12111 | val a5 = hookDecl(a4,((startPos,getPos q3),DEC_GEN_ENT(idx,ent,ext))) | |
12112 | in | |
12113 | if c3<>0wx3E (* #">" *) | |
12114 | then let val a6 = hookError(a5,(getPos q3,ERR_EXPECTED(expGt,[c3]))) | |
12115 | in raise SyntaxError(c3,a6,q3) | |
12116 | end | |
12117 | else let val a6 = if not (!O_VALIDATE) orelse getEntId q3=startEnt then a5 | |
12118 | else hookError(a5,(getPos q3,ERR_DECL_ENT_NESTING LOC_ENT_DECL)) | |
12119 | in getChar(a6,q3) | |
12120 | end | |
12121 | end | |
12122 | ||
12123 | (*--------------------------------------------------------------------*) | |
12124 | (* parse an entity declaration, the initial '<!ENTITY' already read. *) | |
12125 | (* The unique entity id of the initial '<' is given as 1st arg. 4.2: *) | |
12126 | (* *) | |
12127 | (* [70] EntityDecl ::= GEDecl | PEDecl *) | |
12128 | (* [71] GEDecl ::= '<!ENTITY' S Name S EntityDef S? '>' *) | |
12129 | (* [72] PEDecl ::= '<!ENTITY' S '%' S Name S PEDef S? '>' *) | |
12130 | (* *) | |
12131 | (* (see also the comments for ParseDtd.parseMarkupDecl). *) | |
12132 | (* *) | |
12133 | (* raise SyntaxState in case of a syntax error. *) | |
12134 | (* print an error if white space is missing. *) | |
12135 | (* *) | |
12136 | (* print an error for entity end exceptions in subfunctions. *) | |
12137 | (* catch syntax errors by recovering to the next possible state. *) | |
12138 | (* *) | |
12139 | (* pass control to parseParEntDecl or parseGenEntDecl, depending on *) | |
12140 | (* whether the S is followed by a '%'. *) | |
12141 | (* return the remaining char and state. *) | |
12142 | (*--------------------------------------------------------------------*) | |
12143 | (* might raise: none *) | |
12144 | (*--------------------------------------------------------------------*) | |
12145 | fun parseEntityDecl dtd pars caq = | |
12146 | let | |
12147 | val (hadPero,caq1) = skipPSdec dtd caq | |
12148 | in | |
12149 | if hadPero then parseParEntDecl dtd pars caq1 | |
12150 | else parseGenEntDecl dtd pars caq1 | |
12151 | end | |
12152 | handle exn as SyntaxError (c,a,q) => | |
12153 | let val a1 = if c=0wx00 then hookError(a,(getPos q,ERR_ENDED_BY_EE LOC_ENT_DECL)) | |
12154 | else a | |
12155 | in recoverDecl false (c,a1,q) | |
12156 | end | |
12157 | ||
12158 | (*--------------------------------------------------------------------*) | |
12159 | (* parse a notation declaration, the initial '<!NOTATION' already *) | |
12160 | (* read. The unique entity id of the '<!' is given as first arg. 4.7: *) | |
12161 | (* *) | |
12162 | (* [82] NotationDecl ::= '<!NOTATION' S Name S *) | |
12163 | (* (ExternalID | PublicID) S? '>' *) | |
12164 | (* *) | |
12165 | (* (see also the comments for ParseDtd.parseMarkupDecl). *) | |
12166 | (* *) | |
12167 | (* print an error and raise SyntaxState if no notation name, no *) | |
12168 | (* external/public identifier or no final '>' is found. *) | |
12169 | (* print an error if the '>' is not in the same entity as the '<!'. *) | |
12170 | (* print an error if white space is missing. *) | |
12171 | (* *) | |
12172 | (* print an error for entity end exceptions in subfunctions. *) | |
12173 | (* catch syntax errors by recovering to the next possible state. *) | |
12174 | (* *) | |
12175 | (* enter the declared notation into the notation table. *) | |
12176 | (* return the remaining char and state. *) | |
12177 | (*--------------------------------------------------------------------*) | |
12178 | (* might raise: none *) | |
12179 | (*--------------------------------------------------------------------*) | |
12180 | fun parseNotationDecl dtd (startEnt,startPos,ext) caq = | |
12181 | let | |
12182 | val caq1 as (_,_,q1) = skipPS dtd caq | |
12183 | val (name,caq2) = parseName caq1 | |
12184 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expANotName,[c]) | |
12185 | in raise SyntaxError (c,hookError(a,(getPos q,err)),q) | |
12186 | end | |
12187 | val idx = AttNot2Index dtd name | |
12188 | val caq3 = skipPS dtd caq2 | |
12189 | ||
12190 | val (extId,_,(c4,a4,q4)) = parseExtIdNot dtd caq3 | |
12191 | ||
12192 | val a5 = if useParamEnts() orelse not ext then addNotation dtd (a4,q1) (idx,extId) else a4 | |
12193 | val a6 = hookDecl(a5,((startPos,getPos q4),DEC_NOTATION(idx,extId,ext))) | |
12194 | in | |
12195 | if c4<>0wx3E (* #">" *) | |
12196 | then let val a7 = hookError(a6,(getPos q4,ERR_EXPECTED(expGt,[c4]))) | |
12197 | in raise SyntaxError (c4,a7,q4) | |
12198 | end | |
12199 | else let val a7 = if not (!O_VALIDATE) orelse getEntId q4=startEnt then a6 | |
12200 | else hookError(a6,(getPos q4,ERR_DECL_ENT_NESTING LOC_NOT_DECL)) | |
12201 | in getChar(a7,q4) | |
12202 | end | |
12203 | end | |
12204 | handle exn as SyntaxError(c,a,q) => | |
12205 | let val a1 = if c=0wx00 then hookError(a,(getPos q,ERR_ENDED_BY_EE LOC_NOT_DECL)) | |
12206 | else a | |
12207 | in recoverDecl false (c,a1,q) | |
12208 | end | |
12209 | ||
12210 | (*--------------------------------------------------------------------*) | |
12211 | (* parse a mixed-content specification, the initial '(', S? and '#' *) | |
12212 | (* already read. The unique id of the openening paren's entity is *) | |
12213 | (* given as first arg. Cf. 3.2.1/2: *) | |
12214 | (* *) | |
12215 | (* Validity Constraint: Proper Group/PE Nesting *) | |
12216 | (* Parameter-entity replacement text must be properly nested with *) | |
12217 | (* parenthetized groups. That is to say, if either of the opening *) | |
12218 | (* or closing parentheses in a choice, seq, or Mixed construct is *) | |
12219 | (* contained in the replacement text for a parameter entity, both *) | |
12220 | (* must be contained in the same replacement text. *) | |
12221 | (* ... *) | |
12222 | (* [51] Mixed ::= '(' S? '#PCDATA' [ VC: Proper Group/PE *) | |
12223 | (* (S? '|' S? Name)* S? ')*' Nesting ] *) | |
12224 | (* | '(' S? '#PCDATA' S? ')' [ VC: No Duplicate *) | |
12225 | (* Types ] *) | |
12226 | (* *) | |
12227 | (* print an error and raise SyntaxState if no name is found first. *) | |
12228 | (* print an error if a name other than 'PCDATA' is found. *) | |
12229 | (* is found in the first place. *) | |
12230 | (* print an error if element names are specified but no '*' follows. *) | |
12231 | (* print an error if an element name is specified more than once. *) | |
12232 | (* print an error and raise SyntaxState if neither '|' nor ')' is *) | |
12233 | (* found after the 'PCDATA' or after an element name. *) | |
12234 | (* print an error if the closing parenthesis is not in the same *) | |
12235 | (* as the opening one. *) | |
12236 | (* *) | |
12237 | (* return the mixed-content specification, togther with the next *) | |
12238 | (* character and state. *) | |
12239 | (*--------------------------------------------------------------------*) | |
12240 | (* might raise: SyntaxState *) | |
12241 | (*--------------------------------------------------------------------*) | |
12242 | fun parseMixed dtd lparEnt (caq as (_,_,q)) = | |
12243 | let | |
12244 | fun doit is (c,a,q) = | |
12245 | case c | |
12246 | of 0wx29 (* #")" *) => | |
12247 | let val a1 = if not (!O_VALIDATE) orelse getEntId q=lparEnt then a | |
12248 | else hookError(a,(getPos q,ERR_GROUP_ENT_NESTING LOC_MIXED)) | |
12249 | in (rev is,getChar(a1,q)) | |
12250 | end | |
12251 | | 0wx7C (* #"|" *) => | |
12252 | let | |
12253 | val caq1 as (_,_,q1) = skipPSopt dtd (getChar(a,q)) | |
12254 | ||
12255 | val (name,(c2,a2,q2)) = parseName caq1 | |
12256 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expAName,[c]) | |
12257 | val a1 = hookError(a,(getPos q,err)) | |
12258 | in raise SyntaxError (c,a1,q) | |
12259 | end | |
12260 | val i = Element2Index dtd name | |
12261 | val (newis,a3) = | |
12262 | if not (member i is) then (i::is,a2) | |
12263 | else let val a3 = if !O_VALIDATE | |
12264 | then hookError(a2,(getPos q1,ERR_MULT_MIXED name)) | |
12265 | else a2 | |
12266 | in (is,a3) | |
12267 | end | |
12268 | val caq3 = skipPSopt dtd (c2,a3,q2) | |
12269 | in doit newis caq3 | |
12270 | end | |
12271 | | _ => let val a1 = hookError(a,(getPos q,ERR_EXPECTED(expBarRpar,[c]))) | |
12272 | in raise SyntaxError (c,a1,q) | |
12273 | end | |
12274 | ||
12275 | val (name,(c1,a1,q1)) = parseName caq | |
12276 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expPcdata,[c]) | |
12277 | in raise SyntaxError (c,hookError(a,(getPos q,err)),q) | |
12278 | end | |
12279 | val a2 = case name | |
12280 | of [0wx50,0wx43,0wx44,0wx41,0wx54,0wx41] (* "PCDATA" *) => a1 | |
12281 | | _ => hookError(a1,(getPos q,ERR_EXPECTED(expPcdata,name))) | |
12282 | ||
12283 | val caq2 = skipPSopt dtd (c1,a2,q1) | |
12284 | val (is,(c3,a3,q3)) = doit nil caq2 | |
12285 | ||
12286 | val caq4 = if c3=0wx2A (* #"*" *) then getChar(a3,q3) | |
12287 | else let val a4 = if null is then a3 | |
12288 | else hookError(a3,(getPos q3,ERR_EXPECTED(expRep,[c3]))) | |
12289 | in (c3,a4,q3) | |
12290 | end | |
12291 | in | |
12292 | (CT_MIXED is,caq4) | |
12293 | end | |
12294 | ||
12295 | (*--------------------------------------------------------------------*) | |
12296 | (* parse an optional occurrence indicator afer a content particle or *) | |
12297 | (* a content model, given as first argument. Cf. 3.2.1: *) | |
12298 | (* *) | |
12299 | (* [47] children ::= (choice | seq) ('?' | '*' | '+')? *) | |
12300 | (* [48] cp ::= (Name | choice | seq) ('?' | '*' | '+')? *) | |
12301 | (* *) | |
12302 | (* return the (possibly modified) content particle, together with the *) | |
12303 | (* next char and state. *) | |
12304 | (*--------------------------------------------------------------------*) | |
12305 | (* might raise: none *) | |
12306 | (*--------------------------------------------------------------------*) | |
12307 | fun parseOcc cm (c,a,q) = | |
12308 | case c | |
12309 | of 0wx3F (* #"?" *) => (CM_OPT cm,getChar(a,q)) | |
12310 | | 0wx2A (* #"*" *) => (CM_REP cm,getChar(a,q)) | |
12311 | | 0wx2B (* #"+" *) => (CM_PLUS cm,getChar(a,q)) | |
12312 | | _ => (cm,(c,a,q)) | |
12313 | ||
12314 | (*--------------------------------------------------------------------*) | |
12315 | (* parse a content particle. Cf. 3.2.1: *) | |
12316 | (* *) | |
12317 | (* Validity Constraint: Proper Group/PE Nesting *) | |
12318 | (* Parameter-entity replacement text must be properly nested with *) | |
12319 | (* parenthetized groups. ... *) | |
12320 | (* *) | |
12321 | (* (see also parseMixed) *) | |
12322 | (* *) | |
12323 | (* [48] cp ::= (Name | choice | seq) ('?' | '*' | '+')? *) | |
12324 | (* [49] choice ::= '(' S? cp [ VC: Proper Group/ *) | |
12325 | (* ( S? '|' S? cp )* S? ')' PE Nesting ] *) | |
12326 | (* [50] seq ::= '(' S? cp [ VC: Proper Group/ *) | |
12327 | (* ( S? ',' S? cp )* S? ')' PE Nesting ] *) | |
12328 | (* *) | |
12329 | (* print an error and raise SyntaxState if no element name or "(" is *) | |
12330 | (* found in the first place. *) | |
12331 | (* *) | |
12332 | (* return the content particle together with the next char and state. *) | |
12333 | (*--------------------------------------------------------------------*) | |
12334 | (* might raise: SyntaxState *) | |
12335 | (*--------------------------------------------------------------------*) | |
12336 | fun parseCP dtd (c,a,q) = | |
12337 | case c | |
12338 | of 0wx28 (* #"(" *) => | |
12339 | let | |
12340 | val lparEnt = getEntId q | |
12341 | val caq1 = skipPSopt dtd (getChar (a,q)) | |
12342 | in parseGroup dtd lparEnt caq1 | |
12343 | end | |
12344 | | _ => (* must be an element name *) | |
12345 | let | |
12346 | val (name,caq1) = parseName (c,a,q) | |
12347 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expElemLpar,[c]) | |
12348 | val a1 = hookError(a,(getPos q,err)) | |
12349 | in raise SyntaxError (c,a1,q) | |
12350 | end | |
12351 | val idx = Element2Index dtd name | |
12352 | in | |
12353 | parseOcc (CM_ELEM idx) caq1 | |
12354 | end | |
12355 | ||
12356 | (*--------------------------------------------------------------------*) | |
12357 | (* parse a seq/choice, the first content particle and the connector *) | |
12358 | (* already parsed; the connector, the type of group and the entity id *) | |
12359 | (* of the opening parenthesis are given in first arg. Cf. 3.2.1: *) | |
12360 | (* *) | |
12361 | (* Validity Constraint: Proper Group/PE Nesting *) | |
12362 | (* Parameter-entity replacement text must be properly nested with *) | |
12363 | (* parenthetized groups. ... *) | |
12364 | (* *) | |
12365 | (* (see also parseMixed) *) | |
12366 | (* *) | |
12367 | (* [49] choice ::= '(' S? cp [ VC: Proper Group/ *) | |
12368 | (* ( S? '|' S? cp )* S? ')' PE Nesting ] *) | |
12369 | (* [50] seq ::= '(' S? cp [ VC: Proper Group/ *) | |
12370 | (* ( S? ',' S? cp )* S? ')' PE Nesting ] *) | |
12371 | (* *) | |
12372 | (* print an error and raise SyntaxState if something other than the *) | |
12373 | (* connector or ')' is found after a content particle. *) | |
12374 | (* print an error if the closing parenthesis of a group is not in the *) | |
12375 | (* same entity as the opening one. *) | |
12376 | (* *) | |
12377 | (* return the list of content particles parsed, together with the *) | |
12378 | (* remaining character and state. *) | |
12379 | (*--------------------------------------------------------------------*) | |
12380 | (* might raise: SyntaxState *) | |
12381 | (*--------------------------------------------------------------------*) | |
12382 | and parseGroup' dtd (con,loc,lparEnt) caq = | |
12383 | let fun doit caq = | |
12384 | let | |
12385 | val caq1 = skipPSopt dtd caq | |
12386 | val (cp,caq2) = parseCP dtd caq1 | |
12387 | val (c3,a3,q3) = skipPSopt dtd caq2 | |
12388 | in | |
12389 | if c3=0wx29 (* #")" ( *) | |
12390 | then let val a4 = if not (!O_VALIDATE) orelse getEntId q3=lparEnt then a3 | |
12391 | else hookError(a3,(getPos q3,ERR_GROUP_ENT_NESTING loc)) | |
12392 | in ([cp],getChar(a4,q3)) | |
12393 | end | |
12394 | else (if c3=con then let val (cps,caq4) = doit (getChar(a3,q3)) | |
12395 | in (cp::cps,caq4) | |
12396 | end | |
12397 | else let val err = ERR_EXPECTED(expConCRpar con,[c3]) | |
12398 | in raise SyntaxError (c3,hookError(a3,(getPos q3,err)),q3) | |
12399 | end) | |
12400 | end | |
12401 | in | |
12402 | doit caq | |
12403 | end | |
12404 | ||
12405 | (*--------------------------------------------------------------------*) | |
12406 | (* parse a seq/choice, the first content particle parsed; the entity *) | |
12407 | (* id of the opening parenthesis are given in first arg. Cf. 3.2.1: *) | |
12408 | (* *) | |
12409 | (* (see also parseMixed) *) | |
12410 | (* *) | |
12411 | (* [49] choice ::= '(' S? cp [ VC: Proper Group/ *) | |
12412 | (* ( S? '|' S? cp )* S? ')' PE Nesting ] *) | |
12413 | (* [50] seq ::= '(' S? cp [ VC: Proper Group/ *) | |
12414 | (* ( S? ',' S? cp )* S? ')' PE Nesting ] *) | |
12415 | (* *) | |
12416 | (* print an error and raise SyntaxState if neither '|' nor ',' nor *) | |
12417 | (* ')' follows the first content particle in a seq/choice. *) | |
12418 | (* *) | |
12419 | (* return the list of as a ContentModel, together with the remaining *) | |
12420 | (* character and state. *) | |
12421 | (*--------------------------------------------------------------------*) | |
12422 | (* might raise: SyntaxState *) | |
12423 | (*--------------------------------------------------------------------*) | |
12424 | and parseGroup dtd lparEnt caq = | |
12425 | let | |
12426 | val (cp,caq1) = parseCP dtd caq | |
12427 | val (c2,a2,q2) = skipPSopt dtd caq1 | |
12428 | val (group,caq3) = | |
12429 | case c2 | |
12430 | of 0wx29 (* #")" *) => | |
12431 | let val a3 = if not (!O_VALIDATE) orelse getEntId q2=lparEnt then a2 | |
12432 | else hookError(a2,(getPos q2,ERR_GROUP_ENT_NESTING LOC_SEQ)) | |
12433 | in (CM_SEQ[cp],getChar(a3,q2)) | |
12434 | end | |
12435 | | 0wx2C (* #"," *) => | |
12436 | let val (cps,caq3) = parseGroup' dtd (c2,LOC_SEQ,lparEnt) (getChar(a2,q2)) | |
12437 | in (CM_SEQ(cp::cps),caq3) | |
12438 | end | |
12439 | | 0wx7C (* #"|" *) => | |
12440 | let val (cps,caq3) = parseGroup' dtd (c2,LOC_CHOICE,lparEnt) (getChar(a2,q2)) | |
12441 | in (CM_ALT(cp::cps),caq3) | |
12442 | end | |
12443 | | _ => let val a3 = hookError(a2,(getPos q2,ERR_EXPECTED(expConRpar,[c2]))) | |
12444 | in raise SyntaxError (c2,a3,q2) | |
12445 | end | |
12446 | in parseOcc group caq3 | |
12447 | end | |
12448 | ||
12449 | (*--------------------------------------------------------------------*) | |
12450 | (* parse a content specification. Cf. 3.2/3.2.1: *) | |
12451 | (* *) | |
12452 | (* Validity Constraint: Proper Group/PE Nesting *) | |
12453 | (* Parameter-entity replacement text must be properly nested with *) | |
12454 | (* parenthetized groups. That is to say, if either of the opening *) | |
12455 | (* or closing parentheses in a choice, seq, or Mixed construct is *) | |
12456 | (* contained in the replacement text for a parameter entity, both *) | |
12457 | (* must be contained in the same replacement text. *) | |
12458 | (* ... *) | |
12459 | (* [46] contentspec ::= 'EMPTY' | 'ANY' | Mixed | children *) | |
12460 | (* *) | |
12461 | (* [47] children ::= (choice | seq) ('?' | '*' | '+')? *) | |
12462 | (* *) | |
12463 | (* [49] choice ::= '(' S? cp ( S? '|' S? cp )* S? ')' [ VC:Proper *) | |
12464 | (* [50] seq ::= '(' S? cp ( S? ',' S? cp )* S? ')' Group/PE *) | |
12465 | (* Nesting ]*) | |
12466 | (* *) | |
12467 | (* [51] Mixed ::= '(' S? '#PCDATA' [ VC: Proper Group/PE *) | |
12468 | (* (S? '|' S? Name)* S? ')*' Nesting ] *) | |
12469 | (* | '(' S? '#PCDATA' S? ')' [ VC: No Duplicate *) | |
12470 | (* Types ] *) | |
12471 | (* *) | |
12472 | (* print an error and raise SyntaxState if no children, Mixed, or *) | |
12473 | (* name is found. *) | |
12474 | (* print an error and assume ANY if an ambiguous content model is *) | |
12475 | (* specified. *) | |
12476 | (* print an error and assume ANY if a name other than EMPTY or ANY *) | |
12477 | (* is found. *) | |
12478 | (* print an error if the closing parenthesis of a Mixed is not in the *) | |
12479 | (* same entity as the opening one. *) | |
12480 | (* *) | |
12481 | (* return the parsed content specification, togther with the next *) | |
12482 | (* character and state. *) | |
12483 | (*--------------------------------------------------------------------*) | |
12484 | (* might raise: SyntaxState *) | |
12485 | (*--------------------------------------------------------------------*) | |
12486 | fun parseContentSpec dtd curr (c,a,q) = | |
12487 | case c | |
12488 | of 0wx28 (* #"(" *) => | |
12489 | let | |
12490 | val (c1,a1,q1) = skipPSopt dtd (getChar(a,q)) | |
12491 | val lparEnt = getEntId q | |
12492 | in | |
12493 | if c1=0wx23 (* #"#" *) | |
12494 | then parseMixed dtd lparEnt (getChar(a1,q1)) | |
12495 | else let val (cm,(c2,a2,q2)) = parseGroup dtd lparEnt (c1,a1,q1) | |
12496 | val (dfa,a3) = (makeDfa cm,a2) handle Ambiguous(a,n1,n2) | |
12497 | => if !O_COMPATIBILITY | |
12498 | then let val err = ERR_AMBIGUOUS(Index2Element dtd a,n1,n2) | |
12499 | val a3 = hookError(a2,(getPos q,err)) | |
12500 | val dfa = makeChoiceDfa cm | |
12501 | in (dfa,a3) | |
12502 | end | |
12503 | else (makeAmbiguous cm,a2) handle DfaTooLarge max | |
12504 | => let val a3 = if !O_DFA_WARN_TOO_LARGE | |
12505 | then hookWarning | |
12506 | (a2,(getPos q,WARN_DFA_TOO_LARGE(curr,max))) | |
12507 | else a2 | |
12508 | val dfa = makeChoiceDfa cm | |
12509 | in (dfa,a3) | |
12510 | end | |
12511 | in (CT_ELEMENT(cm,dfa),(c2,a3,q2)) | |
12512 | end | |
12513 | end | |
12514 | | _ => (* must be ANY or EMPTY *) | |
12515 | let | |
12516 | val (name,caq1 as (c1,a1,q1)) = parseName (c,a,q) | |
12517 | handle NotFound (c,a,q) => | |
12518 | let val err = ERR_EXPECTED(expContSpec,[c]) | |
12519 | in raise SyntaxError(c,hookError(a,(getPos q,err)),q) | |
12520 | end | |
12521 | in case name | |
12522 | of [0wx41,0wx4e,0wx59] (* "ANY" *) => (CT_ANY,caq1) | |
12523 | | [0wx45,0wx4d,0wx50,0wx54,0wx59] (* "EMPTY" *) => (CT_EMPTY,caq1) | |
12524 | | _ => let val a2 = hookError(a1,(getPos q,ERR_EXPECTED(expContSpec,name))) | |
12525 | in (CT_ANY,(c1,a2,q1)) | |
12526 | end | |
12527 | end | |
12528 | ||
12529 | (*--------------------------------------------------------------------*) | |
12530 | (* parse an element declaration, the initial '<!ELEMENT' already *) | |
12531 | (* read. The unique entity id of the '<!' is given as first arg. 3.2: *) | |
12532 | (* *) | |
12533 | (* [45] elementdecl ::= '<!ELEMENT' S Name [ VC: Unique *) | |
12534 | (* S contentspec S? '>' Element Type *) | |
12535 | (* Declaration ] *) | |
12536 | (* *) | |
12537 | (* (see also the comments for ParseDtd.parseMarkupDecl). *) | |
12538 | (* *) | |
12539 | (* print an error and raise SyntaxState if no element name, no *) | |
12540 | (* content specification, or no final '>' is found. *) | |
12541 | (* print an error if the '>' is not in the same entity as the '<!'. *) | |
12542 | (* print an error if white space is missing. *) | |
12543 | (* *) | |
12544 | (* print an error for entity end exceptions in subfunctions. *) | |
12545 | (* catch syntax errors by recovering to the next possible state. *) | |
12546 | (* *) | |
12547 | (* enter the declared element into the notation table. *) | |
12548 | (* return the remaining char and state. *) | |
12549 | (*--------------------------------------------------------------------*) | |
12550 | (* might raise: none *) | |
12551 | (*--------------------------------------------------------------------*) | |
12552 | fun parseElementDecl dtd (startEnt,startPos,ext) caq = | |
12553 | let | |
12554 | val (caq1 as (_,_,q1))= skipPS dtd caq | |
12555 | val (name,(c2,a2,q2)) = parseName caq1 | |
12556 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expAnElemName,[c]) | |
12557 | in raise SyntaxError(c,hookError(a,(getPos q,err)),q) | |
12558 | end | |
12559 | val a3 = checkElemName (a2,q1) name | |
12560 | val idx = Element2Index dtd name | |
12561 | val caq3 = skipPS dtd (c2,a3,q2) | |
12562 | ||
12563 | val (contSpec,(c4,a4,q4)) = parseContentSpec dtd name caq3 | |
12564 | ||
12565 | val a5 = if useParamEnts() orelse not ext then addElement dtd (a4,q1) (idx,contSpec,ext) | |
12566 | else a4 | |
12567 | val a5' = hookDecl(a5,((startPos,getPos q4),DEC_ELEMENT(idx,contSpec,ext))) | |
12568 | ||
12569 | val (c6,a6,q6) = skipPSopt dtd (c4,a5',q4) | |
12570 | in | |
12571 | if c6<>0wx3E (* #">" *) | |
12572 | then let val a7 = hookError(a6,(getPos q6,ERR_EXPECTED(expGt,[c6]))) | |
12573 | in raise SyntaxError(c6,a7,q6) | |
12574 | end | |
12575 | else let val a7 = if not (!O_VALIDATE) orelse getEntId q6=startEnt then a6 | |
12576 | else hookError(a6,(getPos q6,ERR_DECL_ENT_NESTING LOC_ELEM_DECL)) | |
12577 | in getChar(a7,q6) | |
12578 | end | |
12579 | end | |
12580 | handle exn as SyntaxError (c,a,q) => | |
12581 | let val a1 = if c=0wx00 then hookError(a,(getPos q,ERR_ENDED_BY_EE LOC_ELEM_DECL)) | |
12582 | else a | |
12583 | in recoverDecl false (c,a1,q) | |
12584 | end | |
12585 | ||
12586 | (*--------------------------------------------------------------------*) | |
12587 | (* parse an enumerated attribute type, the '(' already consumed. the *) | |
12588 | (* 1st arg is a string describing the attribute (nmtoken or notation),*) | |
12589 | (* the 2nd arg is a function that parses a single token, the 3rd arg *) | |
12590 | (* a function for converting the token to its index. 3.3.1: *) | |
12591 | (* *) | |
12592 | (* [58] NotationType ::= 'NOTATION' S *) | |
12593 | (* '(' S? Name (S? '|' S? Name)* S? ')' *) | |
12594 | (* [59] Enumeration ::= '(' S? Nmtoken (S? '|' S? Nmtoken)* S? ')' *) | |
12595 | (* *) | |
12596 | (* print an error and raise SyntaxState if no token is found after a *) | |
12597 | (* '(' or '|', or if neither '|' nor ')' follows a token. *) | |
12598 | (* *) | |
12599 | (* return the (sorted) list of indices of the parsed tokens. *) | |
12600 | (*--------------------------------------------------------------------*) | |
12601 | (* might raise: SyntaxState *) | |
12602 | (*--------------------------------------------------------------------*) | |
12603 | fun parseEnumerated dtd (expWhat,parseToken,Token2Index) caq = | |
12604 | let fun doit idxs caq = | |
12605 | let | |
12606 | val caq1 as (_,_,q1) = skipPSopt dtd caq | |
12607 | val (nt,(c2,a2,q2)) = parseToken caq1 | |
12608 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expWhat,[c]) | |
12609 | in raise SyntaxError(c,hookError(a,(getPos q,err)),q) | |
12610 | end | |
12611 | val (idx,a3) = Token2Index dtd (a2,q1) nt | |
12612 | val (c4,a4,q4) = skipPSopt dtd (c2,a3,q2) | |
12613 | val newIdxs = insertInt(idx,idxs) | |
12614 | in case c4 | |
12615 | of 0wx7C (* #"|" *) => doit newIdxs (getChar(a4,q4)) | |
12616 | | 0wx29 (* #")" *) => (newIdxs,getChar(a4,q4)) | |
12617 | | _ => let val a5 = hookError(a4,(getPos q4,ERR_EXPECTED(expBarRpar,[c4]))) | |
12618 | in raise SyntaxError (c4,a5,q4) | |
12619 | end | |
12620 | end | |
12621 | in doit nil caq | |
12622 | end | |
12623 | ||
12624 | (*--------------------------------------------------------------------*) | |
12625 | (* Convert a (name) token to its index as an enumerated attribute. *) | |
12626 | (* 3.3.1: *) | |
12627 | (* *) | |
12628 | (* Validity Constraint: Notation Attributes *) | |
12629 | (* ... all notation names in the declaration must be declared. *) | |
12630 | (* *) | |
12631 | (* print an error if a notation is not declared. *) | |
12632 | (*--------------------------------------------------------------------*) | |
12633 | (* might raise: SyntaxState *) | |
12634 | (*--------------------------------------------------------------------*) | |
12635 | fun Token2NmtokenIndex dtd (a,_) token = (AttNot2Index dtd token,a) | |
12636 | fun Token2NotationIndex dtd (a,q) token = | |
12637 | let | |
12638 | val idx = AttNot2Index dtd token | |
12639 | val a1 = if not (!O_VALIDATE) orelse hasNotation dtd idx then a | |
12640 | else hookError(a,(getPos q,ERR_UNDECLARED(IT_NOTATION,token,LOC_NONE))) | |
12641 | in (idx,a1) | |
12642 | end | |
12643 | ||
12644 | (*--------------------------------------------------------------------*) | |
12645 | (* parse an attribute type, the 1st arg being the element this decl. *) | |
12646 | (* refers to. 3.3.1: *) | |
12647 | (* *) | |
12648 | (* [54] AttType ::= StringType | TokenizedType | EnumeratedType *) | |
12649 | (* *) | |
12650 | (* [55] StringType ::= 'CDATA' *) | |
12651 | (* [56] TokenizedType ::= 'ID' [VC: One ID per Element Type ] *) | |
12652 | (* | 'IDREF' *) | |
12653 | (* | 'IDREFS' *) | |
12654 | (* | 'ENTITY' *) | |
12655 | (* | 'ENTITIES' *) | |
12656 | (* | 'NMTOKEN' *) | |
12657 | (* | 'NMTOKENS' *) | |
12658 | (* *) | |
12659 | (* Validity Constraint: One ID per Element Type *) | |
12660 | (* No element type may have more than one ID attribute specified. *) | |
12661 | (* *) | |
12662 | (* Enumerated Attribute Types *) | |
12663 | (* *) | |
12664 | (* [57] EnumeratedType ::= NotationType | Enumeration *) | |
12665 | (* [58] NotationType ::= 'NOTATION' S '(' ... *) | |
12666 | (* [59] Enumeration ::= '(' ... *) | |
12667 | (* *) | |
12668 | (* print an error and raise SyntaxState if no '(', or name is found *) | |
12669 | (* in the first place, or the name does not start an attribute type, *) | |
12670 | (* or if no '(' follows a 'NOTATION'. *) | |
12671 | (* print an error and assume NMTOKEN instead of ID if the element *) | |
12672 | (* already has an ID attribute. *) | |
12673 | (* *) | |
12674 | (* return the attribute type together with the next char and state. *) | |
12675 | (*--------------------------------------------------------------------*) | |
12676 | (* might raise: SyntaxState *) | |
12677 | (*--------------------------------------------------------------------*) | |
12678 | fun parseAttType dtd elem (c,a,q) = | |
12679 | if c=0wx28 (* #"(" *) then | |
12680 | let val (idxs,caq1) = parseEnumerated dtd | |
12681 | (expANameToken,parseNmtoken,Token2NmtokenIndex) (getChar(a,q)) | |
12682 | in (AT_GROUP idxs,caq1) | |
12683 | end | |
12684 | else let val (name,caq1 as (c1,a1,q1)) = parseName (c,a,q) | |
12685 | handle NotFound cq => let val err = ERR_EXPECTED(expAttType,[c]) | |
12686 | in raise SyntaxError (c,hookError(a,(getPos q,err)),q) | |
12687 | end | |
12688 | in case name | |
12689 | of [0wx43,0wx44,0wx41,0wx54,0wx41] (* "CDATA" *) => | |
12690 | (AT_CDATA,caq1) | |
12691 | | [0wx49,0wx44] (* "ID" *) => | |
12692 | (AT_ID,caq1) | |
12693 | | [0wx49,0wx44,0wx52,0wx45,0wx46] (* "IDREF" *) => | |
12694 | (AT_IDREF,caq1) | |
12695 | | [0wx49,0wx44,0wx52,0wx45,0wx46,0wx53] (* "IDREFS" *) => | |
12696 | (AT_IDREFS,caq1) | |
12697 | | [0wx45,0wx4e,0wx54,0wx49,0wx54,0wx59] (* "ENTITY" *) => | |
12698 | (AT_ENTITY,caq1) | |
12699 | | [0wx45,0wx4e,0wx54,0wx49,0wx54,0wx49,0wx45,0wx53] (* "ENTITIES" *) => | |
12700 | (AT_ENTITIES,caq1) | |
12701 | | [0wx4e,0wx4d,0wx54,0wx4f,0wx4b,0wx45,0wx4e] (* "NMTOKEN" *) => | |
12702 | (AT_NMTOKEN,caq1) | |
12703 | | [0wx4e,0wx4d,0wx54,0wx4f,0wx4b,0wx45,0wx4e,0wx53] (* "NMTOKEN" *) => | |
12704 | (AT_NMTOKENS,caq1) | |
12705 | | [0wx4e,0wx4f,0wx54,0wx41,0wx54,0wx49,0wx4f,0wx4e] (* "NOTATION" *) => | |
12706 | let val (c2,a2,q2) = skipPSopt dtd caq1 | |
12707 | in case c2 | |
12708 | of 0wx28 (* #"(" *) => | |
12709 | let val (idxs,caq3) = parseEnumerated dtd | |
12710 | (expANotName,parseName,Token2NotationIndex) (getChar(a2,q2)) | |
12711 | in (AT_NOTATION idxs,caq3) | |
12712 | end | |
12713 | | _ => let val err = ERR_EXPECTED(expLpar,[c2]) | |
12714 | in raise SyntaxError(c2,hookError(a2,(getPos q2,err)),q2) | |
12715 | end | |
12716 | end | |
12717 | | _ => let val a2 = hookError(a1,(getPos q,ERR_EXPECTED(expAttType,name))) | |
12718 | in raise SyntaxError (c1,a2,q1) | |
12719 | end | |
12720 | end | |
12721 | ||
12722 | (*--------------------------------------------------------------------*) | |
12723 | (* parse an attribute default, for an attribute whose type is given *) | |
12724 | (* the 1st argument. Cf. 3.3.2: *) | |
12725 | (* *) | |
12726 | (* [60] DefaultDecl ::= '#REQUIRED' | '#IMPLIED' *) | |
12727 | (* | (('#FIXED' S)? AttValue) *) | |
12728 | (* *) | |
12729 | (* Validity Constraint: Attribute Default Legal *) | |
12730 | (* The declared default value must meet the lexical constraints of *) | |
12731 | (* the declared attribute type. *) | |
12732 | (* *) | |
12733 | (* and 3.3.1: *) | |
12734 | (* *) | |
12735 | (* Validity Constraint: ID Attribute Default *) | |
12736 | (* An ID attribute must have a declared default of #IMPLIED or *) | |
12737 | (* #REQUIRED. *) | |
12738 | (* *) | |
12739 | (* print an error and raise SyntaxState if no '#' or literal is found *) | |
12740 | (* in the first place, or no name or a wrong name is found after the *) | |
12741 | (* '#', or if no literal follows the 'FIXED'. *) | |
12742 | (* print an error if white space is missing. *) | |
12743 | (* print an error and assume IMPLIED if the default for an ID attrib. *) | |
12744 | (* is not IMPLIED or REQUIRED. *) | |
12745 | (* *) | |
12746 | (* return the default together with the remaining char and state. *) | |
12747 | (*--------------------------------------------------------------------*) | |
12748 | (* might raise: SyntaxState *) | |
12749 | (*--------------------------------------------------------------------*) | |
12750 | fun parseDefaultDecl dtd (aidx,attType) (c,a,q) = | |
12751 | if c=0wx23 (* #"#" *) then | |
12752 | let | |
12753 | val caq0 as (_,_,q0) = (getChar(a,q)) | |
12754 | val (name,caq1) = parseName caq0 | |
12755 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expAttDefKey,[c]) | |
12756 | in raise SyntaxError(c,hookError(a,(getPos q,err)),q) | |
12757 | end | |
12758 | in case name | |
12759 | of [0wx46,0wx49,0wx58,0wx45,0wx44] (* "FIXED" *) => | |
12760 | let | |
12761 | val caq2 as (_,_,q2) = skipPS dtd caq1 | |
12762 | val (lit,text,(c3,a3,q3)) = parseAttValue dtd caq2 | |
12763 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expLitQuote,[c]) | |
12764 | val a1 = hookError(a,(getPos q,err)) | |
12765 | in raise SyntaxError (c,a1,q) | |
12766 | end | |
12767 | in | |
12768 | if !O_VALIDATE andalso isIdType attType | |
12769 | then let val a4 = hookError(a3,(getPos q,ERR_ID_DEFAULT)) | |
12770 | in (AD_IMPLIED,(c3,a4,q3)) | |
12771 | end | |
12772 | else | |
12773 | let val (cv,(av,a4)) = makeAttValue dtd (a3,q2) | |
12774 | (aidx,attType,false,true,text) | |
12775 | in (AD_FIXED((lit,cv,av),(getPos q2,ref false)),(c3,a4,q3)) | |
12776 | end | |
12777 | handle AttValue a => (AD_IMPLIED,(c3,a,q3)) | |
12778 | end | |
12779 | ||
12780 | | [0wx49,0wx4d,0wx50,0wx4c,0wx49,0wx45,0wx44] (* "IMPLIED" *) => | |
12781 | (AD_IMPLIED,caq1) | |
12782 | | [0wx52,0wx45,0wx51,0wx55,0wx49,0wx52,0wx45,0wx44] (* "REQUIRED" *) => | |
12783 | (AD_REQUIRED,caq1) | |
12784 | | _ => let val (c1,a1,q1) = caq1 | |
12785 | val a2 = hookError(a1,(getPos q0,ERR_EXPECTED(expAttDefKey,name))) | |
12786 | in raise SyntaxError (c1,a2,q1) | |
12787 | end | |
12788 | end | |
12789 | else let | |
12790 | val (lit,text,(c1,a1,q1)) = parseAttValue dtd (c,a,q) | |
12791 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expQuoteRni,[c]) | |
12792 | val a1 = hookError(a,(getPos q,err)) | |
12793 | in raise SyntaxError(c,a1,q) | |
12794 | end | |
12795 | in | |
12796 | if !O_VALIDATE andalso isIdType attType | |
12797 | then let val a2 = hookError(a1,(getPos q,ERR_ID_DEFAULT)) | |
12798 | in (AD_IMPLIED,(c1,a2,q1)) | |
12799 | end | |
12800 | else let val (cv,(av,a2)) = makeAttValue dtd (a1,q) (aidx,attType,false,true,text) | |
12801 | in (AD_DEFAULT((lit,cv,av),(getPos q,ref false)),(c1,a2,q1)) | |
12802 | end | |
12803 | handle AttValue a => (AD_IMPLIED,(c1,a,q1)) | |
12804 | end | |
12805 | ||
12806 | (*--------------------------------------------------------------------*) | |
12807 | (* parse an attribute definition, the referred element given as 1st *) | |
12808 | (* argument. 3.3: *) | |
12809 | (* *) | |
12810 | (* [53] AttDef ::= S Name S AttType S DefaultDecl *) | |
12811 | (* *) | |
12812 | (* raise NotFound if no name is found (and thus no attribute def.) *) | |
12813 | (* print an error if white space is missing. *) | |
12814 | (* *) | |
12815 | (* enter the attribute definition into the element table. *) | |
12816 | (* return the next character and the remaining state. *) | |
12817 | (*--------------------------------------------------------------------*) | |
12818 | (* might raise: NotFound SyntaxState *) | |
12819 | (*--------------------------------------------------------------------*) | |
12820 | fun parseAttDef dtd (elem,ext) caq = | |
12821 | let | |
12822 | val (hadS,caq1 as (_,_,q1)) = skipPSmay dtd caq | |
12823 | ||
12824 | val (name,(c2,a2,q2)) = parseName caq1 (* NotFound falls through to the next level *) | |
12825 | val a3 = if hadS then a2 else hookError(a2,(getPos q1,ERR_MISSING_WHITE)) | |
12826 | val a4 = checkAttName (a3,q1) name | |
12827 | val idx = AttNot2Index dtd name | |
12828 | ||
12829 | val caq5 = skipPS dtd (c2,a4,q2) | |
12830 | val (attType,caq6) = parseAttType dtd elem caq5 | |
12831 | val caq7 = skipPS dtd caq6 | |
12832 | ||
12833 | val (attDef,(c8,a8,q8)) = parseDefaultDecl dtd (idx,attType) caq7 | |
12834 | ||
12835 | val a9 = if useParamEnts() orelse not ext | |
12836 | then addAttribute dtd (a8,q1) (elem,(idx,attType,attDef,ext)) else a8 | |
12837 | in | |
12838 | ((idx,attType,attDef),(c8,a9,q8)) | |
12839 | end | |
12840 | ||
12841 | (*--------------------------------------------------------------------*) | |
12842 | (* parse an attribute-list declaration, the initial '<!ATTLIST' *) | |
12843 | (* already read. The unique entity id of the '<!' is given as first *) | |
12844 | (* arg. Cf. 3.3: *) | |
12845 | (* *) | |
12846 | (* [52] AttlistDecl ::= '<!ATTLIST' S Name AttDef* S? '>' *) | |
12847 | (* *) | |
12848 | (* (see also the comments for ParseDtd.parseMarkupDecl). *) | |
12849 | (* *) | |
12850 | (* check whether the element already had an attlist declaration. (cf. *) | |
12851 | (* DtdElements.enterAttDecl) *) | |
12852 | (* *) | |
12853 | (* print an error and raise SyntaxState if no element name, or no *) | |
12854 | (* final '>' is found. *) | |
12855 | (* print an error if the '>' is not in the same entity as the '<!'. *) | |
12856 | (* print an error if white space is missing. *) | |
12857 | (* *) | |
12858 | (* print an error for entity end exceptions in subfunctions. *) | |
12859 | (* catch syntax errors by recovering to the next possible state. *) | |
12860 | (* *) | |
12861 | (* enter the declared attributes into the element table. *) | |
12862 | (* return the remaining char and state. *) | |
12863 | (*--------------------------------------------------------------------*) | |
12864 | (* might raise: none *) | |
12865 | (*--------------------------------------------------------------------*) | |
12866 | fun parseAttListDecl dtd (startEnt,startPos,ext) caq = | |
12867 | let | |
12868 | val caq1 as (_,_,q1) = skipPS dtd caq | |
12869 | val (name,(c2,a2,q2)) = parseName caq1 | |
12870 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expAnElemName,[c]) | |
12871 | in raise SyntaxError (c,hookError(a,(getPos q,err)),q) | |
12872 | end | |
12873 | val a3 = checkElemName (a2,q1) name | |
12874 | val idx = Element2Index dtd name | |
12875 | ||
12876 | val a4 = if !O_VALIDATE orelse not ext then enterAttList dtd (a3,q1) idx else a3 | |
12877 | ||
12878 | fun doit attDefs caq = | |
12879 | let val (attDef,caq1) = parseAttDef dtd (idx,ext) caq | |
12880 | handle NotFound (c,a,q) => raise NotFound | |
12881 | (c,hookDecl(a,((startPos,getPos q),DEC_ATTLIST(idx,rev attDefs,ext))),q) | |
12882 | | SyntaxError (c,a,q) => raise SyntaxError | |
12883 | (c,hookDecl(a,((startPos,getPos q),DEC_ATTLIST(idx,rev attDefs,ext))),q) | |
12884 | in doit (attDef::attDefs) caq1 | |
12885 | end | |
12886 | ||
12887 | val (c5,a5,q5) = doit nil (c2,a4,q2) handle NotFound caq => caq | |
12888 | in | |
12889 | if c5 <> 0wx3E (* #">" *) | |
12890 | then let val a6 = hookError(a5,(getPos q5,ERR_EXPECTED(expAttNameGt,[c5]))) | |
12891 | in raise SyntaxError (c5,a6,q5) | |
12892 | end | |
12893 | else let val a6 = if not (!O_VALIDATE) orelse getEntId q5=startEnt then a5 | |
12894 | else hookError(a5,(getPos q5,ERR_DECL_ENT_NESTING LOC_ATT_DECL)) | |
12895 | in getChar(a6,q5) | |
12896 | end | |
12897 | end | |
12898 | handle exn as SyntaxError (c,a,q) => | |
12899 | let val a1 = if c=0wx00 then hookError(a,(getPos q,ERR_ENDED_BY_EE LOC_ATT_DECL)) | |
12900 | else a | |
12901 | in recoverDecl false (c,a,q) | |
12902 | end | |
12903 | end | |
12904 | (* stop of ../../Parser/Parse/parseDecl.sml *) | |
12905 | (* start of ../../Parser/Parse/parseDtd.sml *) | |
12906 | signature ParseDtd = | |
12907 | sig | |
12908 | (*---------------------------------------------------------------------- | |
12909 | include ParseBase | |
12910 | ||
12911 | val parseName : UniChar.Char * AppData * State | |
12912 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
12913 | ||
12914 | val openExtern : int * Uri.Uri -> AppData * State | |
12915 | -> Encoding.Encoding * HookData.TextDecl option * (UniChar.Char * AppData * State) | |
12916 | val openDocument : Uri.Uri option -> AppData | |
12917 | -> Encoding.Encoding * HookData.XmlDecl option * (UniChar.Char * AppData * State) | |
12918 | ||
12919 | val skipCharRef : AppData * State -> (UniChar.Char * AppData * State) | |
12920 | val skipReference : UniChar.Char * AppData * State -> (UniChar.Char * AppData * State) | |
12921 | val parseGenRef : Dtd -> UniChar.Char * AppData * State | |
12922 | -> (int * Base.GenEntity) * (AppData * State) | |
12923 | val parseCharRefLit : UniChar.Data -> AppData * State | |
12924 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
12925 | ||
12926 | val parseComment : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
12927 | val parseProcInstr : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
12928 | ||
12929 | val skipTag : Errors.Location -> AppData * State -> (UniChar.Char * AppData * State) | |
12930 | val parseETag : Dtd -> AppData * State | |
12931 | -> int * UniChar.Data * Errors.Position * (UniChar.Char * AppData * State) | |
12932 | val parseSTag : Dtd -> Errors.Position -> UniChar.Char * AppData * State | |
12933 | -> (HookData.StartTagInfo * Base.ElemInfo) * (UniChar.Char * AppData * State) | |
12934 | ||
12935 | val skipDecl : bool -> UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
12936 | ----------------------------------------------------------------------*) | |
12937 | include ParseDecl | |
12938 | ||
12939 | val parseDocTypeDecl : Dtd -> (UniChar.Char * AppData * State) | |
12940 | -> int option * (UniChar.Char * AppData * State) | |
12941 | end | |
12942 | ||
12943 | (*--------------------------------------------------------------------------*) | |
12944 | (* Structure: ParseDtd *) | |
12945 | (* *) | |
12946 | (* Exceptions raised by functions in this structure: *) | |
12947 | (* parseDocTypeDecl : none *) | |
12948 | (*--------------------------------------------------------------------------*) | |
12949 | functor ParseDtd (structure ParseBase : ParseBase) | |
12950 | : ParseDtd = | |
12951 | struct | |
12952 | structure ParseDecl = ParseDecl (structure ParseBase = ParseBase) | |
12953 | ||
12954 | open | |
12955 | Base UniChar Errors | |
12956 | ParseDecl | |
12957 | ||
12958 | (*--------------------------------------------------------------------*) | |
12959 | (* parse a markup declaration other than a processing instruction, *) | |
12960 | (* "<!" already consumed. The unique entity id of the initial '<!' is *) | |
12961 | (* given as first arg. Cf. 2.8: *) | |
12962 | (* *) | |
12963 | (* [29] markupdecl ::= elementdecl | AttlistDecl | EntityDecl *) | |
12964 | (* | NotationDecl | PI | Comment *) | |
12965 | (* ... *) | |
12966 | (* Validity Constraint: Proper Declaration/PE Nesting *) | |
12967 | (* Parameter-entity replacement text must be properly nested with *) | |
12968 | (* markup declarations. That is to say, if either the first *) | |
12969 | (* character or the last character of a markup declaration *) | |
12970 | (* (markupdecl above) is contained in the replacement text for a *) | |
12971 | (* parameter-entity reference, both must be contained in the same *) | |
12972 | (* replacement text. *) | |
12973 | (* *) | |
12974 | (* and 3.2,3.3,4.2,4.7: *) | |
12975 | (* *) | |
12976 | (* [45] elementdecl ::= '<!ELEMENT' ... *) | |
12977 | (* [52] AttlistDecl ::= '<!ATTLIST' ... *) | |
12978 | (* [70] EntityDecl ::= GEDecl | PEDecl *) | |
12979 | (* [71] GEDecl ::= '<!ENTITY' ... *) | |
12980 | (* [72] PEDecl ::= '<!ENTITY' ... *) | |
12981 | (* [82] NotationDecl ::= '<!NOTATION' ... *) | |
12982 | (* *) | |
12983 | (* print an error an recover if something other than "--", "ELEMENT", *) | |
12984 | (* "ENTITY", "ATTLIST", or"NOTATION" is found. *) | |
12985 | (* *) | |
12986 | (* return the remaining character and state. *) | |
12987 | (*--------------------------------------------------------------------*) | |
12988 | (* might raise: none *) | |
12989 | (*--------------------------------------------------------------------*) | |
12990 | fun parseMarkupDecl dtd (startEnt,startPos) (c,a,q) = | |
12991 | case c | |
12992 | of 0wx2D => (* #"-" *) | |
12993 | let val (c1,a1,q1) = getChar (a,q) | |
12994 | in if c1<>0wx2D (* #"-" *) | |
12995 | then let val a2 = hookError(a1,(getPos q1,ERR_EXPECTED(expDash,[c1]))) | |
12996 | in recoverDecl false (c1,a2,q1) | |
12997 | end | |
12998 | else parseComment startPos (a1,q1) | |
12999 | end | |
13000 | | _ => let | |
13001 | val (name,caq1) = parseName (c,a,q) | |
13002 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expStartMarkup,[c]) | |
13003 | val a1 = hookError(a,(getPos q,err)) | |
13004 | in raise SyntaxError (c,a1,q) | |
13005 | end | |
13006 | val ext = hasExternal dtd | |
13007 | in case name | |
13008 | of [0wx45,0wx4c,0wx45,0wx4d,0wx45,0wx4e,0wx54] (* "ELEMENT" *) => | |
13009 | parseElementDecl dtd (startEnt,startPos,ext) caq1 | |
13010 | | [0wx41,0wx54,0wx54,0wx4c,0wx49,0wx53,0wx54] (* "ATTLIST" *) => | |
13011 | parseAttListDecl dtd (startEnt,startPos,ext) caq1 | |
13012 | | [0wx4e,0wx4f,0wx54,0wx41,0wx54,0wx49,0wx4f,0wx4e] (* "NOTATION" *) => | |
13013 | parseNotationDecl dtd (startEnt,startPos,ext) caq1 | |
13014 | | [0wx45,0wx4e,0wx54,0wx49,0wx54,0wx59] (* "ENTITY" *) => | |
13015 | parseEntityDecl dtd (startEnt,startPos,ext) caq1 | |
13016 | | _ => let val (c1,a1,q1) = caq1 | |
13017 | val err = ERR_EXPECTED(expStartMarkup,name) | |
13018 | val a2 = hookError(a1,(getPos q,err)) | |
13019 | in recoverDecl false (c1,a2,q1) | |
13020 | end | |
13021 | end | |
13022 | ||
13023 | (*--------------------------------------------------------------------*) | |
13024 | (* skip an ignored section, starting after the '<![IGNORE[', consume *) | |
13025 | (* the finishing "]]>". 3.4: *) | |
13026 | (* *) | |
13027 | (* [63] ignoreSect ::= '<![' S? 'IGNORE' S? '[' *) | |
13028 | (* ignoreSectContents* ']]>' *) | |
13029 | (* [64] ignoreSectContents ::= Ignore ('<![' ignoreSectContents *) | |
13030 | (* ']]>' Ignore)* *) | |
13031 | (* [65] Ignore ::= Char* - (Char* ('<!['|']]>') Char* ) *) | |
13032 | (* *) | |
13033 | (* ... If the keyword of the conditional section is IGNORE, then *) | |
13034 | (* the contents of the conditional section are not logically part *) | |
13035 | (* of the DTD. Note that for reliable parsing, the contents of even *) | |
13036 | (* ignored conditional sections must be read in order to detect *) | |
13037 | (* nested conditional sections and ensure that the end of the *) | |
13038 | (* outermost (ignored) conditional section is properly detected. *) | |
13039 | (* If a conditional section with a keyword of INCLUDE occurs within *) | |
13040 | (* a larger conditional section with a keyword of IGNORE, both the *) | |
13041 | (* outer and the inner conditional sections are ignored. *) | |
13042 | (* *) | |
13043 | (* print an error an finish if an entity end is encountered. *) | |
13044 | (* *) | |
13045 | (* return the next char and state. *) | |
13046 | (*--------------------------------------------------------------------*) | |
13047 | (* might raise: none *) | |
13048 | (*--------------------------------------------------------------------*) | |
13049 | fun skipIgnored caq = | |
13050 | let | |
13051 | (*--------------------------------------------------------------*) | |
13052 | (* level counts the nesting of conditional sections. *) | |
13053 | (* if the second char after a "<" ("]") is not a "[" ("]"), it *) | |
13054 | (* can nevertheless start another delimiter and is therefore *) | |
13055 | (* fed into a recursive call of doit. *) | |
13056 | (*--------------------------------------------------------------*) | |
13057 | fun doit level (c,a,q) = | |
13058 | case c | |
13059 | of 0wx00 => (c,hookError(a,(getPos q,ERR_ENDED_BY_EE LOC_IGNORED)),q) | |
13060 | | 0wx3C (* #"<" *) => | |
13061 | let val (c1,a1,q1) = getChar (a,q) | |
13062 | in if c1=0wx21 (* #"!" *) | |
13063 | then let val (c2,a2,q2) = (getChar(a1,q1)) | |
13064 | in if c2=0wx5B (* #"[" *) then doit (level+1) (getChar(a2,q2)) | |
13065 | else doit level (c2,a2,q2) | |
13066 | end | |
13067 | else doit level (c1,a1,q1) | |
13068 | end | |
13069 | | 0wx5D (* #"]" *) => | |
13070 | let val (c1,a1,q1) = getChar (a,q) | |
13071 | in if c1=0wx5D (* #"]" *) then doit' level (getChar (a1,q1)) | |
13072 | else doit level (c1,a1,q1) | |
13073 | end | |
13074 | | _ => doit level (getChar (a,q)) | |
13075 | (*--------------------------------------------------------------*) | |
13076 | (* if the second "]" is followed by a "]", then this might be *) | |
13077 | (* the real second "]". Therefore doit' loops as long as it *) | |
13078 | (* finds "]"'s. *) | |
13079 | (*--------------------------------------------------------------*) | |
13080 | and doit' level (c,a,q) = | |
13081 | case c | |
13082 | of 0wx3E (* #">" *) => if level>0 then doit (level-1) (getChar (a,q)) | |
13083 | else getChar (a,q) | |
13084 | | 0wx5D (* #"]" *) => doit' level (getChar (a,q)) | |
13085 | | _ => doit level (c,a,q) | |
13086 | in | |
13087 | doit 0 caq | |
13088 | end | |
13089 | ||
13090 | (*--------------------------------------------------------------------*) | |
13091 | (* parse the internal or external subset of the dtd. handle included *) | |
13092 | (* sections by counting their nesting level. Cf 2.8: *) | |
13093 | (* *) | |
13094 | (* Validity Constraint: Proper Declaration/PE Nesting *) | |
13095 | (* Parameter-entity replacement text must be properly nested with *) | |
13096 | (* markup declarations. That is to say, if either the first *) | |
13097 | (* character or the last character of a markup declaration *) | |
13098 | (* (markupdecl above) is contained in the replacement text for a *) | |
13099 | (* parameter-entity reference, both must be contained in the same *) | |
13100 | (* replacement text. *) | |
13101 | (* ... *) | |
13102 | (* [28] doctypedecl ::= '<!DOCTYPE'[Image] S Name (S ExternalID)? *) | |
13103 | (* S? ('[' (markupdecl | PEReference | S)* ']' S?)? '>' *) | |
13104 | (* [29] markupdecl ::= elementdecl | AttlistDecl | EntityDecl *) | |
13105 | (* | NotationDecl | PI | Comment *) | |
13106 | (* [30] extSubset ::= TextDecl? extSubsetDecl *) | |
13107 | (* [31] extSubsetDecl ::= ( markupdecl | conditionalSect *) | |
13108 | (* | PEReference | S )* *) | |
13109 | (* and 3.4: *) | |
13110 | (* *) | |
13111 | (* [61] conditionalSect ::= includeSect | ignoreSect *) | |
13112 | (* [62] includeSect ::= '<![' S? 'INCLUDE' S? *) | |
13113 | (* '[' extSubsetDecl ']]>' *) | |
13114 | (* [63] ignoreSect ::= '<![' S? 'IGNORE' S? *) | |
13115 | (* '[' ignoreSectContents* ']]>' *) | |
13116 | (* *) | |
13117 | (* print an error and finish if the end of document is encountered in *) | |
13118 | (* the internal subset. *) | |
13119 | (* print an error and raise SyntaxState if a "<" is not followed by a *) | |
13120 | (* "!" or a "?". *) | |
13121 | (* print an error and raise SyntaxState if a "]" is not followed by *) | |
13122 | (* "]>". *) | |
13123 | (* print an error if a "<![" is found in the internal subset. *) | |
13124 | (* print an error if a "]" is found outside the internal subset. *) | |
13125 | (* print an error if a "]]>" is found outside an included section. *) | |
13126 | (* print an error an raise SyntaxState if something other than a *) | |
13127 | (* markup declaration, parameter entity reference, white space or *) | |
13128 | (* a conditional section is encountered. *) | |
13129 | (* print an error and raise SyntaxState if a "<![" is not followed by *) | |
13130 | (* "INCLUDE" or "IGNORE", or if the second "[" is missing. *) | |
13131 | (* *) | |
13132 | (* catch entity end exceptions in subfunctions by printing an error *) | |
13133 | (* and recovering. *) | |
13134 | (* *) | |
13135 | (* return the remaining state and char. *) | |
13136 | (*--------------------------------------------------------------------*) | |
13137 | (* might raise: none *) | |
13138 | (*--------------------------------------------------------------------*) | |
13139 | fun parseSubset dtd caq = | |
13140 | let | |
13141 | datatype CondStatus = IGNORE | INCLUDE | |
13142 | ||
13143 | fun do_data caq = | |
13144 | let fun doit hadError ws (c,a,q) = | |
13145 | case c | |
13146 | of 0wx00 => (ws,(c,a,q)) | |
13147 | | 0wx09 => doit false (c::ws) (getChar(a,q)) | |
13148 | | 0wx0A => doit false (c::ws) (getChar(a,q)) | |
13149 | | 0wx20 => doit false (c::ws) (getChar(a,q)) | |
13150 | | 0wx25 => (ws,(c,a,q)) | |
13151 | | 0wx3C => (ws,(c,a,q)) | |
13152 | | 0wx5D => (ws,(c,a,q)) | |
13153 | | _ => if hadError then doit true ws (getChar(a,q)) | |
13154 | else let val err = ERR_FORBIDDEN_HERE(IT_DATA nil,LOC_SUBSET) | |
13155 | val a1 = hookError (a,(getPos q,err)) | |
13156 | in doit true ws (getChar(a1,q)) | |
13157 | end | |
13158 | ||
13159 | val (ws,(c1,a1,q1)) = doit false nil caq | |
13160 | val a2 = if null ws then a1 | |
13161 | else hookWhite(a1,Data2Vector (rev ws)) | |
13162 | in (c1,a2,q1) | |
13163 | end | |
13164 | ||
13165 | fun doit cond (c,a,q) = | |
13166 | case c | |
13167 | of 0wx00 => | |
13168 | if isSpecial q | |
13169 | (*---------------------------------------------------*) | |
13170 | (* the external subset ends at and of special entity.*) | |
13171 | (* so does the internal subset, but with error. *) | |
13172 | (*---------------------------------------------------*) | |
13173 | then | |
13174 | let val a1 = | |
13175 | if inDocEntity q | |
13176 | then hookError(a,(getPos q,ERR_ENDED_BY_EE LOC_INT_SUBSET)) | |
13177 | else if cond=0 then a | |
13178 | else hookError(a,(getPos q,ERR_ENDED_BY_EE LOC_INCLUDED)) | |
13179 | in (c,a1,q) | |
13180 | end | |
13181 | else let val a1 = hookEntEnd (a,getPos q) | |
13182 | in doit cond (getChar(a1,q)) | |
13183 | end | |
13184 | ||
13185 | (* ignore errors in parameter references -----------------*) | |
13186 | | 0wx25 (* #"%" *) => | |
13187 | let | |
13188 | val caq2 = | |
13189 | let val ((id,ent),(a1,q1)) = parseParRef dtd (getChar(a,q)) | |
13190 | in if !O_VALIDATE orelse !O_INCLUDE_PARAM_ENTS then | |
13191 | case ent | |
13192 | of PE_NULL => getChar(a1,q1) | |
13193 | | PE_INTERN(_,rep) => | |
13194 | let | |
13195 | val q2 = pushIntern(q1,id,true,rep) | |
13196 | val a2 = hookParRef(a1,((getPos q,getPos q1),id,ent,true)) | |
13197 | in getChar(a2,q2) | |
13198 | end | |
13199 | | PE_EXTERN extId => | |
13200 | let | |
13201 | val a2 = hookParRef(a1,((getPos q,getPos q1),id,ent,true)) | |
13202 | val caq3 = | |
13203 | #3(openExtern (id,true,resolveExtId extId) (a2,q1)) | |
13204 | handle CantOpenFile(fmsg,a) | |
13205 | => let val err = ERR_NO_SUCH_FILE fmsg | |
13206 | val a1 = hookError(a,(getPos q1,err)) | |
13207 | val a2 = hookEntEnd (a1,getPos q1) | |
13208 | in (getChar(a2,q1)) | |
13209 | end | |
13210 | in caq3 | |
13211 | end | |
13212 | (* changed 080600: setExternal is already called by parseParRef *) | |
13213 | else let val a2 = hookParRef(a1,((getPos q,getPos q1),id,ent,false)) | |
13214 | in getChar(a2,q1) | |
13215 | end | |
13216 | end | |
13217 | handle SyntaxError caq => caq | |
13218 | | NoSuchEntity aq => getChar aq | |
13219 | in doit cond caq2 | |
13220 | end | |
13221 | ||
13222 | | 0wx3C (* #"<" *) => | |
13223 | let val (c1,a1,q1) = getChar(a,q) | |
13224 | in case c1 | |
13225 | of 0wx3F => (* #"?" *) | |
13226 | let val caq2 = parseProcInstr (getPos q) (a1,q1) | |
13227 | in doit cond caq2 | |
13228 | end | |
13229 | | 0wx21 => (* #"!" *) | |
13230 | let val (c2,a2,q2) = (getChar(a1,q1)) | |
13231 | in if c2=0wx5B (* #"[" *) | |
13232 | then do_cond cond q (a2,q2) | |
13233 | else | |
13234 | let val caq3 = parseMarkupDecl dtd | |
13235 | (getEntId q,getPos q) (c2,a2,q2) | |
13236 | in doit cond caq3 | |
13237 | end | |
13238 | end | |
13239 | | _ => let val err = ERR_EXPECTED(expExclQuest,[c1]) | |
13240 | val a2 = hookError(a1,(getPos q1,err)) | |
13241 | val caq3 = recoverDecl false (c1,a2,q1) | |
13242 | in doit cond caq3 | |
13243 | end | |
13244 | end | |
13245 | ||
13246 | | 0wx5D (* #"]" *) => do_brack cond q (getChar(a,q)) | |
13247 | | _ => let val caq1 = do_data (c,a,q) | |
13248 | in doit cond caq1 | |
13249 | end | |
13250 | ||
13251 | and do_brack cond q0 (c,a,q) = | |
13252 | if inDocEntity q then (c,a,q) | |
13253 | else if c=0wx5D (* #"]" *) | |
13254 | then let val (c1,a1,q1) = getChar(a,q) | |
13255 | in if c1=0wx3E (* #">" *) | |
13256 | (* ignore wrong "]]>"'s ------------------*) | |
13257 | then if cond=0 | |
13258 | then let val err = ERR_FORBIDDEN_HERE(IT_DATA [c,c,c1], | |
13259 | LOC_OUT_COND) | |
13260 | val a2 = hookError(a1,(getPos q0,err)) | |
13261 | in doit cond (getChar(a2,q1)) | |
13262 | end | |
13263 | else doit (cond-1) (getChar(a1,q1)) | |
13264 | (* the second "]" may start another "]]>" ---*) | |
13265 | else let val a2 = hookError(a1,(getPos q1,ERR_EXPECTED(expGt,[c1]))) | |
13266 | in do_brack cond q (c1,a2,q1) | |
13267 | end | |
13268 | end | |
13269 | else let val a1 = hookError(a,(getPos q,ERR_EXPECTED(expRbrack,[c]))) | |
13270 | in doit cond (c,a1,q) | |
13271 | end | |
13272 | ||
13273 | and do_cond cond q0 (a,q) = | |
13274 | let | |
13275 | (* marked sections are forbidden in the internal subset. -*) | |
13276 | val inInt = inDocEntity q | |
13277 | val a1 = if inInt then hookError (a,(getPos q0,ERR_FORBIDDEN_HERE | |
13278 | (IT_COND,LOC_INT_SUBSET))) | |
13279 | else a | |
13280 | ||
13281 | val caq2 as (_,_,q2) = skipPSopt dtd (getChar(a1,q)) | |
13282 | ||
13283 | val (status,caq3) = | |
13284 | let | |
13285 | val (name,(c3,a3,q3)) = parseName caq2 | |
13286 | (* ignore sections with bad status keyword ---------*) | |
13287 | val (status,a4) = | |
13288 | case name | |
13289 | of [0wx49,0wx47,0wx4e,0wx4f,0wx52,0wx45] => (IGNORE,a3) | |
13290 | | [0wx49,0wx4e,0wx43,0wx4c,0wx55,0wx44,0wx45] => (INCLUDE,a3) | |
13291 | | _ => let val err = ERR_EXPECTED(expCondStatus,name) | |
13292 | val a4 = hookError(a3,(getPos q2,err)) | |
13293 | in (IGNORE,a4) | |
13294 | end | |
13295 | val (c5,a5,q5) = skipPSopt dtd (c3,a4,q3) | |
13296 | in (* ignore sections without "[" after keyword -------*) | |
13297 | if c5=0wx5B then (status,getChar(a5,q5)) | |
13298 | else let val a6 = hookError(a5,(getPos q5,ERR_EXPECTED(expLbrack,[c5]))) | |
13299 | in (IGNORE,(c5,a6,q5)) | |
13300 | end | |
13301 | end | |
13302 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expCondStatus,[c]) | |
13303 | val a1 = hookError(a,(getPos q,err)) | |
13304 | in (IGNORE,(c,a1,q)) | |
13305 | end | |
13306 | in | |
13307 | (* ignore sections in the internal subset ----------------*) | |
13308 | case (status,inInt) | |
13309 | of (INCLUDE,_) => doit (cond+1) caq3 | |
13310 | | (_,_) => doit cond (skipIgnored caq3) | |
13311 | end | |
13312 | in | |
13313 | doit 0 caq | |
13314 | end | |
13315 | ||
13316 | (*--------------------------------------------------------------------*) | |
13317 | (* parse the internal subset of the dtd. Cf 2.8: *) | |
13318 | (* *) | |
13319 | (* return the remaining character and state. *) | |
13320 | (*--------------------------------------------------------------------*) | |
13321 | (* might raise: none *) | |
13322 | (*--------------------------------------------------------------------*) | |
13323 | fun parseInternalSubset dtd (a,q) = | |
13324 | let val a1 = hookSubset (a,getPos q) | |
13325 | in parseSubset dtd (getChar(a1,q)) | |
13326 | end | |
13327 | ||
13328 | (*--------------------------------------------------------------------*) | |
13329 | (* parse the external subset of the dtd, the filename given as first *) | |
13330 | (* argument. handle included sections by counting their nesting level.*) | |
13331 | (* the file is opened on its own stack, and closed at the end. *) | |
13332 | (* Cf 2.8: *) | |
13333 | (* *) | |
13334 | (* print an error and do nothing if the file cannot be opened. *) | |
13335 | (* *) | |
13336 | (* return nothing. *) | |
13337 | (*--------------------------------------------------------------------*) | |
13338 | (* might raise: none *) | |
13339 | (*--------------------------------------------------------------------*) | |
13340 | fun parseExternalSubset dtd (a,q) extId = | |
13341 | let | |
13342 | val uri = resolveExtId extId | |
13343 | val (enc,textDecl,(c1,a1,q1)) = openSubset uri a | |
13344 | val a2 = hookExtSubset (a1,(uri,enc,textDecl)) | |
13345 | val (_,a3,q3) = parseSubset dtd (c1,a2,q1) | |
13346 | val _ = closeAll q3 | |
13347 | in a3 | |
13348 | end | |
13349 | handle CantOpenFile(fmsg,a) => hookError(a,(getPos q,ERR_NO_SUCH_FILE fmsg)) | |
13350 | ||
13351 | (*--------------------------------------------------------------------*) | |
13352 | (* Parse the document type declaration, the <!DOCTYPE already read. *) | |
13353 | (* Cf. 2.8: *) | |
13354 | (* *) | |
13355 | (* [28] doctypedecl ::= '<!DOCTYPE'[Image] S Name (S ExternalID)? *) | |
13356 | (* S? ('[' (markupdecl | PEReference | S)* ']' S?)? '>' *) | |
13357 | (* *) | |
13358 | (* print an error and raise SyntaxState if no name is found. *) | |
13359 | (* print an error and raise SyntaxState if no final ">" is found. *) | |
13360 | (* external identifier is found. *) | |
13361 | (* print an error if white space is missing. *) | |
13362 | (* *) | |
13363 | (* return nothing. *) | |
13364 | (*--------------------------------------------------------------------*) | |
13365 | (* might raise: none *) | |
13366 | (*--------------------------------------------------------------------*) | |
13367 | fun parseDocTypeDecl dtd caq = | |
13368 | let | |
13369 | val _ = setHasDtd dtd | |
13370 | val caq1 = skipS caq | |
13371 | ||
13372 | val (doc,caq2) = parseName caq1 | |
13373 | handle NotFound (c,a,q) => let val err = ERR_EXPECTED(expAName,[c]) | |
13374 | in raise SyntaxError (c,hookError(a,(getPos q,err)),q) | |
13375 | end | |
13376 | val idx = Element2Index dtd doc | |
13377 | ||
13378 | val (hadS,caq3 as (_,_,q3)) = skipSmay caq2 | |
13379 | val (ext,(c4,a4,q4)) = let val (extId,_,(c4,a4,q4)) = parseExtIdSub dtd caq3 | |
13380 | val a5 = if hadS then a4 | |
13381 | else hookError(a4,(getPos q3,ERR_MISSING_WHITE)) | |
13382 | in (SOME extId,(c4,a5,q4)) | |
13383 | end | |
13384 | handle NotFound caq => (NONE,caq) | |
13385 | ||
13386 | val a4' = hookDocType(a4,(idx,ext)) | |
13387 | val (c5,a5,q5) = case c4 | |
13388 | of 0wx5B (* #"[" *) => | |
13389 | let val caq5 = parseInternalSubset dtd (a4',q4) | |
13390 | in skipSopt caq5 | |
13391 | end | |
13392 | | _ => (c4,a4',q4) | |
13393 | ||
13394 | val a6 = case ext | |
13395 | of NONE => a5 | |
13396 | | SOME extId => let val _ = setExternal dtd | |
13397 | in if !O_VALIDATE orelse !O_INCLUDE_PARAM_ENTS | |
13398 | then parseExternalSubset dtd (a5,q5) extId | |
13399 | else a5 | |
13400 | end | |
13401 | ||
13402 | val a7 = checkMultEnum dtd (a6,q5) | |
13403 | val a7'= checkPreDefined dtd (a7,q5) | |
13404 | val a8 = checkUnparsed dtd a7' | |
13405 | ||
13406 | val (c9,a9,q9) = if c5=0wx3E (* #">" *) then getChar(a8,q5) | |
13407 | else let val err = expectedOrEnded(expGt,LOC_DOC_DECL) c5 | |
13408 | val a9 = hookError(a8,(getPos q5,err)) | |
13409 | in recoverDecl false (c5,a9,q5) | |
13410 | end | |
13411 | in | |
13412 | (SOME idx,(c9,hookEndDtd(a9,getPos q9),q9)) | |
13413 | end | |
13414 | handle exn as SyntaxError(c,a,q) => | |
13415 | let val a1 = if c=0wx00 then hookError(a,(getPos q,ERR_ENDED_BY_EE LOC_DOC_DECL)) | |
13416 | else a | |
13417 | val (c2,a2,q2) = recoverDecl true (c,a1,q) | |
13418 | in (NONE,(c2,hookEndDtd(a2,getPos q2),q2)) | |
13419 | end | |
13420 | end | |
13421 | (* stop of ../../Parser/Parse/parseDtd.sml *) | |
13422 | (* start of ../../Parser/Parse/parseContent.sml *) | |
13423 | signature ParseContent = | |
13424 | sig | |
13425 | (*---------------------------------------------------------------------- | |
13426 | include ParseBase | |
13427 | ||
13428 | val parseName : UniChar.Char * AppData * State | |
13429 | -> UniChar.Data * (UniChar.Char * AppData * State) | |
13430 | ||
13431 | val openDocument : Uri.Uri option -> AppData | |
13432 | -> Encoding.Encoding * HookData.XmlDecl option * (UniChar.Char * AppData * State) | |
13433 | ||
13434 | val skipCharRef : AppData * State -> (UniChar.Char * AppData * State) | |
13435 | val skipReference : UniChar.Char * AppData * State -> (UniChar.Char * AppData * State) | |
13436 | ||
13437 | val parseComment : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
13438 | val parseProcInstr : Errors.Position -> AppData * State -> (UniChar.Char * AppData * State) | |
13439 | ||
13440 | val skipTag : Errors.Location -> AppData * State -> (UniChar.Char * AppData * State) | |
13441 | val parseSTag : Dtd -> Errors.Position -> UniChar.Char * AppData * State | |
13442 | -> (HookData.StartTagInfo * Base.ElemInfo) * (UniChar.Char * AppData * State) | |
13443 | ||
13444 | val skipDecl : bool -> UniChar.Char * AppData * State -> UniChar.Char * AppData * State | |
13445 | ||
13446 | val parseDocTypeDecl : Dtd -> (UniChar.Char * AppData * State) | |
13447 | -> int option * (UniChar.Char * AppData * State) | |
13448 | ----------------------------------------------------------------------*) | |
13449 | include ParseDtd | |
13450 | ||
13451 | val skipBadSection : UniChar.Char * AppData * State -> (UniChar.Char * AppData * State) | |
13452 | ||
13453 | val parseElement : Dtd * int list * State * (HookData.StartTagInfo * Base.ElemInfo) | |
13454 | * (UniChar.Char * AppData * State) | |
13455 | -> (int * UniChar.Data * Errors.Position * Errors.Position) option | |
13456 | * (UniChar.Char * AppData * State) | |
13457 | end | |
13458 | ||
13459 | (*--------------------------------------------------------------------------*) | |
13460 | (* Structure: ParseContent *) | |
13461 | (* *) | |
13462 | (* Exceptions raised by functions in this structure: *) | |
13463 | (* skipBadSection : none *) | |
13464 | (* parseElement : none *) | |
13465 | (*--------------------------------------------------------------------------*) | |
13466 | functor ParseContent (structure ParseBase : ParseBase) | |
13467 | : ParseContent = | |
13468 | struct | |
13469 | structure ParseDtd = ParseDtd (structure ParseBase = ParseBase) | |
13470 | ||
13471 | open | |
13472 | Base Errors UniChar UniClasses UtilList | |
13473 | ParseDtd | |
13474 | ||
13475 | val THIS_MODULE = "ParseContent" | |
13476 | val DATA_BUFSIZE = 1024 | |
13477 | val dataBuffer = Array.array(DATA_BUFSIZE,0w0:UniChar.Char) | |
13478 | ||
13479 | (*--------------------------------------------------------------------*) | |
13480 | (* skip a cdata section, the initial "<![" already consumed. The first*) | |
13481 | (* arg is the type of section to be skipped. cf. 2.5: *) | |
13482 | (* *) | |
13483 | (* [18] CDSect ::= CDStart CData CDEnd *) | |
13484 | (* [19] CDStart ::= '<![CDATA[' *) | |
13485 | (* [20] CData ::= (Char* - (Char* ']]>' Char* )) [[ *) | |
13486 | (* [21] CDEnd ::= ']]>' *) | |
13487 | (* *) | |
13488 | (* don't care abeout whether "CDATA[" is present. just skip until the *) | |
13489 | (* next "]]>" or entity end. *) | |
13490 | (* *) | |
13491 | (* return the remaining char and state. *) | |
13492 | (*--------------------------------------------------------------------*) | |
13493 | (* might raise: none *) | |
13494 | (*--------------------------------------------------------------------*) | |
13495 | fun skipBadSection caq = | |
13496 | let(*--------------------------------------------------------------*) | |
13497 | (* for a sequence of "]"s, check whether the last two are *) | |
13498 | (* followed by a ">" *) | |
13499 | (*--------------------------------------------------------------*) | |
13500 | fun checkEnd aq = | |
13501 | let val (c1,a1,q1) = getChar aq | |
13502 | in case c1 | |
13503 | of 0wx3E (* #">" *) => getChar(a1,q1) | |
13504 | | 0wx5D (* #"]" *) => checkEnd(a1,q1) | |
13505 | | _ => doit(c1,a1,q1) | |
13506 | end | |
13507 | and doit (c,a,q) = | |
13508 | case c | |
13509 | of 0wx00 => let val a1 = hookError(a,(getPos q,ERR_ENDED_BY_EE LOC_CDATA)) | |
13510 | in (c,a1,q) | |
13511 | end | |
13512 | | 0wx5D (* #"]" *) => let val (c1,a1,q1) = getChar(a,q) | |
13513 | in if c1=0wx5D (* #"]" *) then checkEnd(a1,q1) | |
13514 | else doit (c1,a1,q1) | |
13515 | end | |
13516 | | _ => doit (getChar(a,q)) | |
13517 | in doit caq | |
13518 | end | |
13519 | ||
13520 | (*--------------------------------------------------------------------*) | |
13521 | (* parse a cdata section, the initial "<![CDATA[" already consumed. *) | |
13522 | (* cf. 2.5: *) | |
13523 | (* *) | |
13524 | (* [18] CDSect ::= CDStart CData CDEnd *) | |
13525 | (* [19] CDStart ::= '<![CDATA[' *) | |
13526 | (* [20] CData ::= (Char* - (Char* ']]>' Char* )) [[ *) | |
13527 | (* [21] CDEnd ::= ']]>' *) | |
13528 | (* *) | |
13529 | (* print an error and finish if an entity end is found. *) | |
13530 | (* *) | |
13531 | (* return the data as a Vector option and the next char & state. *) | |
13532 | (*--------------------------------------------------------------------*) | |
13533 | (* might raise: none *) | |
13534 | (*--------------------------------------------------------------------*) | |
13535 | fun parseCDataSection' (aq as (_,q)) = | |
13536 | let | |
13537 | (*--------------------------------------------------------------*) | |
13538 | (* for a sequence of "]"s, check whether the last two are *) | |
13539 | (* followed by a ">" *) | |
13540 | (*--------------------------------------------------------------*) | |
13541 | fun doEnd (text,q0,q1) (a2,q2) = | |
13542 | let val (c3,a3,q3) = getChar (a2,q2) | |
13543 | in case c3 | |
13544 | of 0wx00 => | |
13545 | let val a4 = hookError(a3,(getPos q3,ERR_ENDED_BY_EE LOC_CDATA)) | |
13546 | in (0wx5D::text,getPos q2,(c3,a4,q3)) | |
13547 | end | |
13548 | | 0wx3E => (* #">" *) (text,getPos q0,getChar(a3,q3)) | |
13549 | | 0wx5D => doEnd (0wx5D::text,q1,q2) (a3,q3) | |
13550 | | _ => doit (c3::0wx5D::0wx5D::text) (a3,q3) | |
13551 | end | |
13552 | and doBrack (text,q0) (a1,q1) = | |
13553 | let val (c2,a2,q2) = getChar(a1,q1) | |
13554 | in case c2 | |
13555 | of 0wx00 => | |
13556 | let val a3 = hookError(a2,(getPos q2,ERR_ENDED_BY_EE LOC_CDATA)) | |
13557 | in (0wx5D::text,getPos q1,(c2,a3,q2)) | |
13558 | end | |
13559 | | 0wx5D (* #"]" *) => doEnd (text,q0,q1) (a2,q2) | |
13560 | | _ => doit (c2::0wx5D::text) (a2,q2) | |
13561 | end | |
13562 | and doit text (a,q) = | |
13563 | let val (c1,a1,q1) = getChar(a,q) | |
13564 | in case c1 | |
13565 | of 0wx00 => | |
13566 | let val a2 = hookError(a1,(getPos q1,ERR_ENDED_BY_EE LOC_CDATA)) | |
13567 | in (text,getPos q,(c1,a2,q1)) | |
13568 | end | |
13569 | | 0wx5D (* #"]" *) => doBrack (text,q) (a1,q1) | |
13570 | | _ => doit (c1::text) (a1,q1) | |
13571 | end | |
13572 | val (c1,a1,q1) = getChar aq | |
13573 | val startPos = getPos q1 | |
13574 | val (cs,endPos,(c2,a2,q2)) = | |
13575 | case c1 | |
13576 | of 0wx00 => | |
13577 | let val a2 = hookError(a1,(getPos q1,ERR_ENDED_BY_EE LOC_CDATA)) | |
13578 | in (nil,getPos q,(c1,a2,q1)) | |
13579 | end | |
13580 | | 0wx5D (* #"]" *) => doBrack (nil,q) (a1,q1) | |
13581 | | _ => doit [c1] (a1,q1) | |
13582 | val text = Data2Vector(rev cs) | |
13583 | val a3 = hookCData(a1,((startPos,endPos),text)) | |
13584 | in (c2,a3,q2) | |
13585 | end | |
13586 | (*--------------------------------------------------------------------*) | |
13587 | (* parse a cdata section, the initial "<![" already consumed. *) | |
13588 | (* cf. 2.5: *) | |
13589 | (* *) | |
13590 | (* [18] CDSect ::= CDStart CData CDEnd *) | |
13591 | (* [19] CDStart ::= '<![CDATA[' *) | |
13592 | (* [20] CData ::= (Char* - (Char* ']]>' Char* )) [[ *) | |
13593 | (* [21] CDEnd ::= ']]>' *) | |
13594 | (* *) | |
13595 | (* print an error and skip the section if no name or a name other *) | |
13596 | (* than CDATA comes first, or no '[' follows the name. *) | |
13597 | (* *) | |
13598 | (* return the text of the section together with the remaining state. *) | |
13599 | (*--------------------------------------------------------------------*) | |
13600 | (* might raise: none *) | |
13601 | (*--------------------------------------------------------------------*) | |
13602 | fun parseCDataSection startPos aq = | |
13603 | let | |
13604 | val caq0 as (_,_,q0) = (getChar aq) | |
13605 | val (name,(c1,a1,q1)) = parseName caq0 | |
13606 | handle NotFound (c,a,q) => let val err = expectedOrEnded(expCdata,LOC_CDATA) c | |
13607 | in raise SyntaxError(c,hookError(a,(getPos q,err)),q) | |
13608 | end | |
13609 | ||
13610 | val _ = if name = [0wx43,0wx44,0wx41,0wx54,0wx41] (* "CDATA" *) then () | |
13611 | else let val err = ERR_EXPECTED(expCdata,name) | |
13612 | in raise SyntaxError(c1,hookError(a1,(getPos q0,err)),q1) | |
13613 | end | |
13614 | ||
13615 | val _ = if c1=0wx5B (* #"[" *) then () | |
13616 | else let val err = expectedOrEnded(expLbrack,LOC_CDATA) c1 | |
13617 | in raise SyntaxError(c1,hookError(a1,(getPos q1,err)),q1) | |
13618 | end | |
13619 | in | |
13620 | parseCDataSection'(a1,q1) | |
13621 | end | |
13622 | handle SyntaxError caq => skipBadSection caq | |
13623 | ||
13624 | (*--------------------------------------------------------------------*) | |
13625 | (* parse element or empty content. The second arg holds the unique *) | |
13626 | (* number of the element's first characters's entity, the index of *) | |
13627 | (* the current element, and the dfa for its content. Cf. 3: *) | |
13628 | (* *) | |
13629 | (* [39] element ::= EmptyElemTag *) | |
13630 | (* | STag content ETag *) | |
13631 | (* ... *) | |
13632 | (* Well-Formedness Constraint: Element Type Match *) | |
13633 | (* The Name in an element's end-tag must match the element type in *) | |
13634 | (* the start-tag. *) | |
13635 | (* *) | |
13636 | (* Validity Constraint: Element Valid *) | |
13637 | (* An element is valid if there is a declaration matching *) | |
13638 | (* elementdecl where the Name matches the element type, and one of *) | |
13639 | (* the following holds: *) | |
13640 | (* *) | |
13641 | (* 1. The declaration matches EMPTY and the element has no content. *) | |
13642 | (* 2. The declaration matches children and the sequence of child *) | |
13643 | (* elements belongs to the language generated by the regular *) | |
13644 | (* expression in the content model, with optional white space *) | |
13645 | (* (characters matching the nonterminal S) between each pair of *) | |
13646 | (* child elements. *) | |
13647 | (* *) | |
13648 | (* and 3.1: *) | |
13649 | (* *) | |
13650 | (* [43] content ::= (element | CharData | Reference | CDSect | PI *) | |
13651 | (* | Comment)* *) | |
13652 | (* 2.4: *) | |
13653 | (* The ampersand character (&) and the left angle bracket (<) may *) | |
13654 | (* appear in their literal form only when used as markup delimiters,*) | |
13655 | (* or within a comment, a processing instruction, or a CDATA *) | |
13656 | (* section... If they are needed elsewhere, they must be escaped *) | |
13657 | (* using either numeric character references or the strings "&" *) | |
13658 | (* and "<" respectively... *) | |
13659 | (* *) | |
13660 | (* consume the content of the element, accumulating it via the user *) | |
13661 | (* data functions (parameter a in subfunctions). trace the content *) | |
13662 | (* model of the element with a dfa transitions on a dfa state (para- *) | |
13663 | (* meter p in subfunctions). finish at the first end-tag, whether *) | |
13664 | (* matching or not, or at the document end. *) | |
13665 | (* *) | |
13666 | (* handle all syntax and other recoverable errors from subfunctions *) | |
13667 | (* and try to continue. *) | |
13668 | (* *) | |
13669 | (* return the accumulated user data and the next char and state. *) | |
13670 | (*--------------------------------------------------------------------*) | |
13671 | (* might raise: none *) | |
13672 | (*--------------------------------------------------------------------*) | |
13673 | fun parseElementContent dtd (openElems,startEnt,curr,dfa,ext,mt) caq = | |
13674 | let | |
13675 | (*--------------------------------------------------------------*) | |
13676 | (* check whether the dfa allows a transition/an end tag here. *) | |
13677 | (* print an error if not. After a transition return the new *) | |
13678 | (* dfa state. *) | |
13679 | (*--------------------------------------------------------------*) | |
13680 | fun fin_elem (a,pos,dfa,p) = | |
13681 | if dfaFinal(dfa,p) then a | |
13682 | else hookError(a,(pos,ERR_ENDED_EARLY(Index2Element dtd curr))) | |
13683 | fun trans_elem (a,q,dfa,p,el) = | |
13684 | let val p1 = dfaTrans(dfa,p,el) | |
13685 | in if p1<>dfaError then (p1,a) | |
13686 | else let val err = ERR_BAD_ELEM(Index2Element dtd curr,Index2Element dtd el) | |
13687 | in (p1,hookError(a,(getPos q,err))) | |
13688 | end | |
13689 | end | |
13690 | ||
13691 | (*--------------------------------------------------------------*) | |
13692 | (* consume all white space and skip all data until the next "<" *) | |
13693 | (* or "&". print an error for each sequence of data encountered.*) | |
13694 | (* *) | |
13695 | (* add the white space as data to the user data. *) | |
13696 | (* return the next char and state. *) | |
13697 | (*--------------------------------------------------------------*) | |
13698 | fun do_char_elem (c0,a0,q0) = | |
13699 | let | |
13700 | (*--------------------------------------------------------------*) | |
13701 | (* read data characters until the next "<", "&" or entity end. *) | |
13702 | (* add the data to the user data when an error occurs or no *) | |
13703 | (* more data follows. *) | |
13704 | (* *) | |
13705 | (* return the modified user data with the next char and state. *) | |
13706 | (*--------------------------------------------------------------*) | |
13707 | fun data_hook(a,q,cs) = | |
13708 | if null cs then a | |
13709 | else hookData(a,((getPos q0,getPos q),Data2Vector(rev cs),true)) | |
13710 | fun after_error (caq as (c,a,q)) = | |
13711 | case c | |
13712 | of 0wx00 => caq | |
13713 | | 0wx26 (* #"&" *) => caq | |
13714 | | 0wx3C (* #"<" *) => caq | |
13715 | | _ => after_error(getChar(a,q)) | |
13716 | fun do_data (yet,aq as (_,q)) = | |
13717 | let val (c1,a1,q1) = getChar aq | |
13718 | in case c1 | |
13719 | of 0wx00 => (c1,data_hook(a1,q,yet),q1) | |
13720 | | 0wx26 (* #"&" *) => (c1,data_hook(a1,q,yet),q1) | |
13721 | | 0wx3C (* #"<" *) => (c1,data_hook(a1,q,yet),q1) | |
13722 | | _ => | |
13723 | if isS c1 then do_data (c1::yet,(a1,q1)) | |
13724 | else let val a2 = data_hook(a1,q,yet) | |
13725 | val err = ERR_ELEM_CONTENT(IT_DATA nil) | |
13726 | val a3 = hookError(a2,(getPos q1,err)) | |
13727 | in after_error (getChar(a3,q1)) | |
13728 | end | |
13729 | end | |
13730 | in | |
13731 | if isS c0 then | |
13732 | let val a1 = if not (ext andalso standsAlone dtd) then a0 | |
13733 | else let val err = ERR_STANDALONE_ELEM(Index2Element dtd curr) | |
13734 | val _ = setStandAlone dtd (not (!O_ERROR_MINIMIZE)) | |
13735 | in hookError(a0,(getPos q0,err)) | |
13736 | end | |
13737 | in do_data ([c0],(a1,q0)) | |
13738 | end | |
13739 | else let val a1 = hookError(a0,(getPos q0,ERR_ELEM_CONTENT(IT_DATA nil))) | |
13740 | in after_error(getChar(a1,q0)) | |
13741 | end | |
13742 | end | |
13743 | (*--------------------------------------------------------------*) | |
13744 | (* consume a reference, handling errors by ignoring them. *) | |
13745 | (*--------------------------------------------------------------*) | |
13746 | fun do_ref (q,(c1,a1,q1)) = | |
13747 | if c1=0wx23 (* #"#" *) | |
13748 | (*------------------------------------------------------*) | |
13749 | (* it's a character reference. *) | |
13750 | (*------------------------------------------------------*) | |
13751 | then let val err = ERR_ELEM_CONTENT IT_CHAR_REF | |
13752 | val a2 = hookError(a1,(getPos q,err)) | |
13753 | in skipCharRef(a2,q1) | |
13754 | end | |
13755 | (*---------------------------------------------------------*) | |
13756 | (* it's a general entity reference. *) | |
13757 | (*---------------------------------------------------------*) | |
13758 | else let val ((id,ent),(a2,q2)) = parseGenRef dtd (c1,a1,q1) | |
13759 | in case ent | |
13760 | of GE_NULL => | |
13761 | let val a3 = hookGenRef(a2,((getPos q,getPos q2),id,ent,false)) | |
13762 | in (getChar(a3,q2)) | |
13763 | end | |
13764 | | GE_INTERN(_,rep) => | |
13765 | let | |
13766 | val q3 = pushIntern(q2,id,false,rep) | |
13767 | val a3 = hookGenRef(a2,((getPos q,getPos q2),id,ent,true)) | |
13768 | in (getChar(a3,q3)) | |
13769 | end | |
13770 | | GE_EXTERN ext => | |
13771 | if !O_VALIDATE orelse !O_INCLUDE_EXT_PARSED | |
13772 | then | |
13773 | let | |
13774 | val a3 = hookGenRef(a2,((getPos q,getPos q2),id,ent,true)) | |
13775 | val caq4 = #3(openExtern (id,false,resolveExtId ext) (a3,q2)) | |
13776 | handle CantOpenFile(fmsg,a) | |
13777 | => let val err = ERR_NO_SUCH_FILE fmsg | |
13778 | val a2 = hookError(a,(getPos q2,err)) | |
13779 | val a3 = hookEntEnd(a2,getPos q2) | |
13780 | in (getChar(a3,q2)) | |
13781 | end | |
13782 | in caq4 | |
13783 | end | |
13784 | else let val a3 = hookGenRef(a2,((getPos q,getPos q2),id,ent,false)) | |
13785 | in getChar(a3,q2) | |
13786 | end | |
13787 | | GE_UNPARSED _ => | |
13788 | raise InternalError | |
13789 | (THIS_MODULE,"parseElementContent", | |
13790 | "parseGenRef returned GE_UNPARSED") | |
13791 | end | |
13792 | (*-------------------------------------------------------*) | |
13793 | (* handle any errors in references by ignoring them. *) | |
13794 | (*-------------------------------------------------------*) | |
13795 | handle SyntaxError caq => caq | |
13796 | | NoSuchEntity aq => getChar aq | |
13797 | ||
13798 | (*--------------------------------------------------------------*) | |
13799 | (* handle an end-tag. finish the element in the user data and *) | |
13800 | (* return. *) | |
13801 | (* *) | |
13802 | (* print an error if the element's content is not yet finished. *) | |
13803 | (* print an error if the end-tag is for another element. *) | |
13804 | (* print an error if the element's first character was not in *) | |
13805 | (* the same entity. *) | |
13806 | (*--------------------------------------------------------------*) | |
13807 | and do_etag (p,etag as (elem,space,startPos,endPos),(c,a,q)) = | |
13808 | let | |
13809 | fun checkNesting a = | |
13810 | if getEntId q=startEnt then a | |
13811 | else hookError(a,(startPos,ERR_ELEM_ENT_NESTING(Index2Element dtd curr))) | |
13812 | in | |
13813 | if elem=curr then let val a1 = fin_elem (a,startPos,dfa,p) | |
13814 | val a2 = checkNesting a1 | |
13815 | val a3 = hookEndTag | |
13816 | (a2,((startPos,endPos),curr,SOME(elem,space))) | |
13817 | in (NONE,(c,a3,q)) | |
13818 | end | |
13819 | else if member elem openElems | |
13820 | then let val err = ERR_OMITTED_END_TAG(Index2Element dtd curr) | |
13821 | val a1 = hookError(a,(startPos,err)) | |
13822 | val a2 = fin_elem (a1,startPos,dfa,p) | |
13823 | val a3 = hookEndTag(a2,((startPos,endPos),curr,NONE)) | |
13824 | in (SOME etag,(c,a3,q)) | |
13825 | end | |
13826 | else if dfaFinal(dfa,p) | |
13827 | then let val err = ERR_ELEM_TYPE_MATCH(Index2Element dtd curr, | |
13828 | Index2Element dtd elem) | |
13829 | val a1 = hookError(a,(startPos,err)) | |
13830 | val a2 = checkNesting a1 | |
13831 | val a3 = hookEndTag(a2,((startPos,endPos),curr,SOME(elem,space))) | |
13832 | in (NONE,(c,a3,q)) | |
13833 | end | |
13834 | else let val err = ERR_IGNORED_END_TAG(Index2Element dtd curr, | |
13835 | Index2Element dtd elem) | |
13836 | val a1 = hookError(a,(startPos,err)) | |
13837 | in do_elem(p,(c,a1,q)) | |
13838 | end | |
13839 | end | |
13840 | ||
13841 | (*--------------------------------------------------------------*) | |
13842 | (* handle a declaration, proc. instr or tag. *) | |
13843 | (*--------------------------------------------------------------*) | |
13844 | and do_lt (p,q,(c1,a1,q1)) = | |
13845 | case c1 | |
13846 | of 0wx21 (* #"!" *) => | |
13847 | (*------------------------------------------------------*) | |
13848 | (* its a declaration, cdata section or comment. *) | |
13849 | (* Only comments are valid. *) | |
13850 | (*------------------------------------------------------*) | |
13851 | let val (c2,a2,q2) = getChar(a1,q1) | |
13852 | val caq3 = | |
13853 | case c2 | |
13854 | of 0wx2D (* #"-" *) => | |
13855 | let val (c3,a3,q3) = getChar(a2,q2) | |
13856 | in if c3=0wx2D then parseComment (getPos q) (a3,q3) | |
13857 | else let val err = ERR_EXPECTED(expDash,[c3]) | |
13858 | val a4 = hookError(a3,(getPos q3,err)) | |
13859 | in recoverDecl false (c3,a4,q3) | |
13860 | end | |
13861 | end | |
13862 | | 0wx5B (* #"[" *) => | |
13863 | let val a3 = hookError(a2,(getPos q2,ERR_ELEM_CONTENT IT_CDATA)) | |
13864 | in skipBadSection (getChar(a3,q2)) | |
13865 | end | |
13866 | | _ => (c2,hookError(a2,(getPos q2,ERR_EXPECTED(expDash,[c2]))),q2) | |
13867 | in do_elem(p,caq3) | |
13868 | end | |
13869 | | 0wx2F (* #"/" *) => | |
13870 | (let val (elem,space,endPos,caq2) = parseETag dtd (a1,q1) | |
13871 | in do_etag (p,(elem,space,getPos q,endPos),caq2) | |
13872 | end | |
13873 | handle SyntaxError caq => do_elem(p,caq)) | |
13874 | | 0wx3F (* #"?" *) => do_elem (p,parseProcInstr (getPos q) (a1,q1)) | |
13875 | | _ => | |
13876 | (*------------------------------------------------------*) | |
13877 | (* it's a start tag. the recursive call to parseElement *) | |
13878 | (* might return an end-tag that has to be consumed. *) | |
13879 | (*------------------------------------------------------*) | |
13880 | if isNms c1 then | |
13881 | let val (p1,(opt,caq2)) = | |
13882 | (let val (stag as ((_,elem,_,_,_),_),(c2,a2,q2)) = | |
13883 | parseSTag dtd (getPos q) (c1,a1,q1) | |
13884 | val (p1,a3) = trans_elem (a2,q1,dfa,p,elem) | |
13885 | in (p1,parseElement (dtd,curr::openElems,q,stag,(c2,a3,q2))) | |
13886 | end) | |
13887 | handle SyntaxError caq => (p,(NONE,caq)) | |
13888 | in case opt | |
13889 | of NONE => do_elem (p1,caq2) | |
13890 | | SOME etag => do_etag (p1,etag,caq2) | |
13891 | end | |
13892 | else let val err = ERR_FORBIDDEN_HERE(IT_CHAR 0wx3C,LOC_CONTENT) | |
13893 | val a2 = hookError(a1,(getPos q,err)) | |
13894 | in do_elem (p,(c1,a2,q1)) | |
13895 | end | |
13896 | ||
13897 | (*--------------------------------------------------------------*) | |
13898 | (* do element content. handle the document end by printing an *) | |
13899 | (* error and finishing like with an end-tag. *) | |
13900 | (*--------------------------------------------------------------*) | |
13901 | and do_elem (p,(c,a,q)) = | |
13902 | case c | |
13903 | of 0wx00 => if isSpecial q | |
13904 | then let val err = ERR_OMITTED_END_TAG(Index2Element dtd curr) | |
13905 | val a1 = hookError(a,(getPos q,err)) | |
13906 | val pos = getPos q | |
13907 | val a2 = fin_elem (a1,pos,dfa,p) | |
13908 | val a3 = hookEndTag(a2,((pos,pos),curr,NONE)) | |
13909 | in (NONE,(c,a3,q)) | |
13910 | end | |
13911 | else let val a1 = hookEntEnd(a,getPos q) | |
13912 | in do_elem (p,getChar(a1,q)) | |
13913 | end | |
13914 | | 0wx26 (* #"&" *) => do_elem (p,do_ref (q,getChar(a,q))) | |
13915 | | 0wx3C (* #"<" *) => do_lt (p,q,getChar(a,q)) | |
13916 | | _ => do_elem (p,do_char_elem (c,a,q)) | |
13917 | ||
13918 | (*--------------------------------------------------------------*) | |
13919 | (* do empty content. if the first thing to come is the current *) | |
13920 | (* element's end-tag, finish it. Otherwise print an error and *) | |
13921 | (* continue as for element content. *) | |
13922 | (*--------------------------------------------------------------*) | |
13923 | and do_empty (c,a,q) = | |
13924 | if c<>0wx3C (* #"<" *) | |
13925 | then let val a1 = hookError(a,(getPos q,ERR_NONEMPTY(Index2Element dtd curr))) | |
13926 | in do_elem (dfaInitial,(c,a1,q)) | |
13927 | end | |
13928 | else | |
13929 | let val (c1,a1,q1) = getChar(a,q) | |
13930 | in if c1<>0wx2F (* #"/" *) | |
13931 | then let val err = ERR_NONEMPTY(Index2Element dtd curr) | |
13932 | val a2 = hookError(a1,(getPos q,err)) | |
13933 | in do_lt (dfaInitial,q,(c1,a2,q1)) | |
13934 | end | |
13935 | else let val (elem,space,endPos,caq2) = parseETag dtd (a1,q1) | |
13936 | in do_etag (dfaInitial,(elem,space,getPos q,endPos),caq2) | |
13937 | end | |
13938 | handle SyntaxError caq => do_elem (dfaInitial,caq) | |
13939 | end | |
13940 | ||
13941 | in if mt then do_empty caq | |
13942 | else do_elem (dfaInitial,caq) | |
13943 | end | |
13944 | ||
13945 | (*--------------------------------------------------------------------*) | |
13946 | (* parse mixed or any content. The second arg holds the unique number *) | |
13947 | (* of the element's first characters's entity, the idx of the current *) | |
13948 | (* element, and a function for validating child elements. Cf. 3: *) | |
13949 | (* *) | |
13950 | (* [39] element ::= EmptyElemTag *) | |
13951 | (* | STag content ETag *) | |
13952 | (* ... *) | |
13953 | (* Well-Formedness Constraint: Element Type Match *) | |
13954 | (* The Name in an element's end-tag must match the element type in *) | |
13955 | (* the start-tag. *) | |
13956 | (* *) | |
13957 | (* Validity Constraint: Element Valid *) | |
13958 | (* An element is valid if there is a declaration matching *) | |
13959 | (* elementdecl where the Name matches the element type, and one of *) | |
13960 | (* the following holds: *) | |
13961 | (* ... *) | |
13962 | (* 3. The declaration matches Mixed and the content consists of *) | |
13963 | (* character data and child elements whose types match names in *) | |
13964 | (* the content model. *) | |
13965 | (* 4. The declaration matches ANY, and the types of any child *) | |
13966 | (* elements have been declared. *) | |
13967 | (* *) | |
13968 | (* 3.1: *) | |
13969 | (* *) | |
13970 | (* [43] content ::= (element | CharData | Reference | CDSect | PI *) | |
13971 | (* | Comment)* *) | |
13972 | (* 2.4: *) | |
13973 | (* The ampersand character (&) and the left angle bracket (<) may *) | |
13974 | (* appear in their literal form only when used as markup delimiters,*) | |
13975 | (* or within a comment, a processing instruction, or a CDATA *) | |
13976 | (* section... If they are needed elsewhere, they must be escaped *) | |
13977 | (* using either numeric character references or the strings "&" *) | |
13978 | (* and "<" respectively. The right angle bracket (>) may be *) | |
13979 | (* represented using the string ">", and must, for compatibility,*) | |
13980 | (* be escaped using ">" or a character reference when it appears *) | |
13981 | (* in the string "]]>" in content, when that string is not marking *) | |
13982 | (* the end of a CDATA section. *) | |
13983 | (* *) | |
13984 | (* consume the content of the element, accumulating it via the user *) | |
13985 | (* data functions (parameter a in subfunctions). for each child, *) | |
13986 | (* check whether it was specified in the element's Mixed content *) | |
13987 | (* specification (validate). finish at the first end-tag, whether *) | |
13988 | (* matching or not, or at the document end. *) | |
13989 | (* *) | |
13990 | (* handle all syntax and other recoverable errors from subfunctions *) | |
13991 | (* and try to continue. *) | |
13992 | (* *) | |
13993 | (* return the accumulated user data and the next char and state. *) | |
13994 | (*--------------------------------------------------------------------*) | |
13995 | (* might raise: none *) | |
13996 | (*--------------------------------------------------------------------*) | |
13997 | and parseMixedContent dtd (openElems,startEnt,curr,validate) caq = | |
13998 | let | |
13999 | (*--------------------------------------------------------------*) | |
14000 | (* read data characters until the next "<", "&" or entity end. *) | |
14001 | (* add the data to the user data when an error occurs or no *) | |
14002 | (* more data follows. *) | |
14003 | (* *) | |
14004 | (* return the modified user data with the next char and state. *) | |
14005 | (*--------------------------------------------------------------*) | |
14006 | fun do_data (br,(c0,a0,q0)) = | |
14007 | let | |
14008 | val pos0 = ref (getPos q0) | |
14009 | val _ = Array.update(dataBuffer,0,c0) | |
14010 | ||
14011 | fun data_hook (i,(a,q)) = | |
14012 | hookData(a,((!pos0,getPos q),Array.extract(dataBuffer,0,SOME i),false)) | |
14013 | fun takeOne (c,qE,i,aq as (a,q)) = | |
14014 | if i<DATA_BUFSIZE then (i+1,aq) before Array.update(dataBuffer,i,c) | |
14015 | else let val a1 = data_hook(i,(a,qE)) | |
14016 | val _ = pos0 := getPos q | |
14017 | val _ = Array.update(dataBuffer,0,c) | |
14018 | in (1,(a1,q)) | |
14019 | end | |
14020 | fun do_br (n,(i,aq as (_,q))) = | |
14021 | let val (c1,a1,q1) = getChar aq | |
14022 | in case c1 | |
14023 | of 0wx00 => (c1,data_hook(i,(a1,q)),q1) | |
14024 | | 0wx26 (* #"&" *) => (c1,data_hook(i,(a1,q)),q1) | |
14025 | | 0wx3C (* #"<" *) => (c1,data_hook(i,(a1,q)),q1) | |
14026 | | 0wx5D (* #"]" *) => do_br (n+1,takeOne(c1,q,i,(a1,q1))) | |
14027 | | 0wx3E (* #">" *) => | |
14028 | let val a2 = if n=1 then a1 | |
14029 | else hookError(a1,(getPos q1,ERR_MUST_ESCAPE c1)) | |
14030 | in doit (takeOne(c1,q,i,(a2,q1))) | |
14031 | end | |
14032 | | _ => doit (takeOne(c1,q,i,(a1,q1))) | |
14033 | end | |
14034 | and doit (i,aq as (_,q)) = | |
14035 | let val (c1,a1,q1) = getChar aq | |
14036 | in case c1 | |
14037 | of 0wx00 => (c1,data_hook(i,(a1,q)),q1) | |
14038 | | 0wx26 (* #"&" *) => (c1,data_hook(i,(a1,q)),q1) | |
14039 | | 0wx3C (* #"<" *) => (c1,data_hook(i,(a1,q)),q1) | |
14040 | | 0wx5D (* #"]" *) => if !O_COMPATIBILITY | |
14041 | then do_br (1,takeOne(c1,q,i,(a1,q1))) | |
14042 | else doit (takeOne(c1,q,i,(a1,q1))) | |
14043 | | _ => doit (takeOne(c1,q,i,(a1,q1))) | |
14044 | end | |
14045 | in | |
14046 | if br then do_br (1,(1,(a0,q0))) | |
14047 | else doit (1,(a0,q0)) | |
14048 | end | |
14049 | (* | |
14050 | fun do_data (br,(c0,a0,q0)) = | |
14051 | let | |
14052 | fun data_hook (yet,(a,q)) = | |
14053 | hookData(a,((getPos q0,getPos q),Data2Vector(rev yet),false)) | |
14054 | fun do_br (n,yet,aq as (_,q)) = | |
14055 | let val (c1,a1,q1) = getChar aq | |
14056 | in case c1 | |
14057 | of 0wx00 => (c1,data_hook(yet,(a1,q)),q1) | |
14058 | | 0wx26 (* #"&" *) => (c1,data_hook(yet,(a1,q)),q1) | |
14059 | | 0wx3C (* #"<" *) => (c1,data_hook(yet,(a1,q)),q1) | |
14060 | | 0wx5D (* #"]" *) => do_br (n+1,c1::yet,(a1,q1)) | |
14061 | | 0wx3E (* #">" *) => | |
14062 | let val a2 = if n=1 then a1 | |
14063 | else hookError(a1,(getPos q1,ERR_MUST_ESCAPE c1)) | |
14064 | in doit (c1::yet,(a2,q1)) | |
14065 | end | |
14066 | | _ => doit (c1::yet,(a1,q1)) | |
14067 | end | |
14068 | and doit (yet,aq as (_,q)) = | |
14069 | let val (c1,a1,q1) = getChar aq | |
14070 | in case c1 | |
14071 | of 0wx00 => (c1,data_hook(yet,(a1,q)),q1) | |
14072 | | 0wx26 (* #"&" *) => (c1,data_hook(yet,(a1,q)),q1) | |
14073 | | 0wx3C (* #"<" *) => (c1,data_hook(yet,(a1,q)),q1) | |
14074 | | 0wx5D (* #"]" *) => if !O_COMPATIBILITY | |
14075 | then do_br (1,c1::yet,(a1,q1)) | |
14076 | else doit (c1::yet,(a1,q1)) | |
14077 | | _ => doit (c1::yet,(a1,q1)) | |
14078 | end | |
14079 | in | |
14080 | if br then do_br (1,[0wx5D],(a0,q0)) | |
14081 | else doit ([c0],(a0,q0)) | |
14082 | end | |
14083 | *) | |
14084 | ||
14085 | (*--------------------------------------------------------------*) | |
14086 | (* consume a reference, handling errors by ignoring them. *) | |
14087 | (*--------------------------------------------------------------*) | |
14088 | fun do_ref (q0,(c,a,q)) = | |
14089 | if c=0wx23 (* #"#" *) | |
14090 | (*------------------------------------------------------*) | |
14091 | (* it's a character reference. *) | |
14092 | (*------------------------------------------------------*) | |
14093 | then let val (cs,(ch,a1,q1)) = parseCharRefLit [0wx23,0wx26] (a,q) | |
14094 | val cv = Data2Vector(rev cs) | |
14095 | val a2 = hookCharRef(a1,((getPos q0,getPos q1),ch,cv)) | |
14096 | in getChar(a2,q1) | |
14097 | end | |
14098 | handle SyntaxError caq => caq | |
14099 | | NoSuchChar aq => getChar aq | |
14100 | (*---------------------------------------------------------*) | |
14101 | (* it's a general entity reference. *) | |
14102 | (*---------------------------------------------------------*) | |
14103 | else let val ((id,ent),(a1,q1)) = parseGenRef dtd (c,a,q) | |
14104 | in case ent | |
14105 | of GE_NULL => | |
14106 | let val a2 = hookGenRef(a1,((getPos q0,getPos q1),id,ent,false)) | |
14107 | in getChar(a2,q1) | |
14108 | end | |
14109 | | GE_INTERN(_,rep) => | |
14110 | let | |
14111 | val q2 = pushIntern(q1,id,false,rep) | |
14112 | val a2 = hookGenRef(a1,((getPos q0,getPos q1),id,ent,true)) | |
14113 | in getChar(a2,q2) | |
14114 | end | |
14115 | | GE_EXTERN ext => | |
14116 | if !O_VALIDATE orelse !O_INCLUDE_EXT_PARSED | |
14117 | then | |
14118 | let | |
14119 | val a2 = hookGenRef(a1,((getPos q0,getPos q1),id,ent,true)) | |
14120 | val caq3 = #3(openExtern (id,false,resolveExtId ext) (a2,q1)) | |
14121 | handle CantOpenFile(fmsg,a) | |
14122 | => let val err = ERR_NO_SUCH_FILE fmsg | |
14123 | val a1 = hookError(a,(getPos q1,err)) | |
14124 | val a2 = hookEntEnd(a1,getPos q1) | |
14125 | in (getChar(a2,q1)) | |
14126 | end | |
14127 | in caq3 | |
14128 | end | |
14129 | else let val a2 = hookGenRef(a1,((getPos q0,getPos q1),id,ent,false)) | |
14130 | in getChar(a2,q1) | |
14131 | end | |
14132 | | GE_UNPARSED _ => | |
14133 | raise InternalError | |
14134 | ("THIS_MODULE","parseMixedContent", | |
14135 | "parseGenRef returned GE_UNPARSED") | |
14136 | end | |
14137 | (*-------------------------------------------------------*) | |
14138 | (* handle any errors in references by ignoring them. *) | |
14139 | (*-------------------------------------------------------*) | |
14140 | handle SyntaxError caq => caq | |
14141 | | NoSuchEntity aq => getChar aq | |
14142 | ||
14143 | (*--------------------------------------------------------------*) | |
14144 | (* handle an end-tag. finish the element in the user data and *) | |
14145 | (* return. *) | |
14146 | (* *) | |
14147 | (* print an error if the element's content is not yet finished. *) | |
14148 | (* print an error if the end-tag is for another element. *) | |
14149 | (* print an error if the element's first character was not in *) | |
14150 | (* the same entity. *) | |
14151 | (*--------------------------------------------------------------*) | |
14152 | and do_etag (etag as (elem,space,startPos,endPos),(c,a,q)) = | |
14153 | let | |
14154 | fun checkNesting a = | |
14155 | if getEntId q=startEnt then a | |
14156 | else hookError(a,(startPos,ERR_ELEM_ENT_NESTING(Index2Element dtd curr))) | |
14157 | in | |
14158 | if elem=curr then let val a1 = checkNesting a | |
14159 | val a2 = hookEndTag | |
14160 | (a1,((startPos,endPos),curr,SOME(elem,space))) | |
14161 | in (NONE,(c,a2,q)) | |
14162 | end | |
14163 | else if member elem openElems | |
14164 | then let val err = ERR_OMITTED_END_TAG(Index2Element dtd curr) | |
14165 | val a1 = hookError(a,(startPos,err)) | |
14166 | val a2 = hookEndTag(a1,((startPos,endPos),curr,NONE)) | |
14167 | in (SOME etag,(c,a2,q)) | |
14168 | end | |
14169 | else let val err = ERR_ELEM_TYPE_MATCH(Index2Element dtd curr, | |
14170 | Index2Element dtd elem) | |
14171 | val a1 = hookError(a,(startPos,err)) | |
14172 | val a2 = checkNesting a1 | |
14173 | val a3 = hookEndTag(a2,((startPos,endPos),curr,SOME(elem,space))) | |
14174 | in (NONE,(c,a3,q)) | |
14175 | end | |
14176 | end | |
14177 | ||
14178 | (*--------------------------------------------------------------*) | |
14179 | (* handle a declaration, proc. instr or tag. If it is an end- *) | |
14180 | (* tag, finish the element in the user data and return. *) | |
14181 | (* *) | |
14182 | (* print an error if the element's content is not yet finished. *) | |
14183 | (* print an error if the end-tag is for another element. *) | |
14184 | (* print an error if the element's first character was not in *) | |
14185 | (* the same entity. *) | |
14186 | (*--------------------------------------------------------------*) | |
14187 | and do_lt (q,(c1,a1,q1)) = | |
14188 | case c1 | |
14189 | of 0wx21 (* #"!" *) => | |
14190 | (*------------------------------------------------------*) | |
14191 | (* its a declaration, cdata section or comment. *) | |
14192 | (* Only comments and cdata sections are valid. *) | |
14193 | (*------------------------------------------------------*) | |
14194 | let val (c2,a2,q2) = getChar(a1,q1) | |
14195 | val caq3 = | |
14196 | case c2 | |
14197 | of 0wx2D (* #"-" *) => | |
14198 | let val (c3,a3,q3) = getChar(a2,q2) | |
14199 | in if c3=0wx2D then parseComment (getPos q) (a3,q3) | |
14200 | else let val err = ERR_EXPECTED(expDash,[c3]) | |
14201 | val a4 = hookError(a3,(getPos q3,err)) | |
14202 | in recoverDecl false (c3,a4,q3) | |
14203 | end | |
14204 | end | |
14205 | | 0wx5B (* #"[" *) => parseCDataSection (getPos q) (a2,q2) | |
14206 | | _ => | |
14207 | (c2,hookError(a2,(getPos q2,ERR_EXPECTED(expDashLbrack,[c2]))),q2) | |
14208 | in do_mixed caq3 | |
14209 | end | |
14210 | | 0wx2F (* #"/" *) => | |
14211 | (let val (elem,space,endPos,caq2) = parseETag dtd (a1,q1) | |
14212 | in do_etag ((elem,space,getPos q,endPos),caq2) | |
14213 | end | |
14214 | handle SyntaxError caq => do_mixed caq) | |
14215 | | 0wx3F (* #"?" *) => do_mixed (parseProcInstr (getPos q) (a1,q1)) | |
14216 | | _ => | |
14217 | (*------------------------------------------------------*) | |
14218 | (* it's a start tag. the recursive call to parseElement *) | |
14219 | (* might return an end-tag that has to be consumed. *) | |
14220 | (*------------------------------------------------------*) | |
14221 | if isNms c1 then | |
14222 | let val (opt,caq2) = | |
14223 | (let val (stag as ((_,elem,_,_,_),_),(c2,a2,q2)) = | |
14224 | parseSTag dtd (getPos q) (c1,a1,q1) | |
14225 | val a3 = validate (a2,q1) elem | |
14226 | in parseElement (dtd,curr::openElems,q,stag,(c2,a3,q2)) | |
14227 | end | |
14228 | handle SyntaxError caq => (NONE,caq)) | |
14229 | in case opt | |
14230 | of NONE => do_mixed caq2 | |
14231 | | SOME etag => do_etag (etag,caq2) | |
14232 | end | |
14233 | else let val err = ERR_FORBIDDEN_HERE(IT_CHAR 0wx3C,LOC_CONTENT) | |
14234 | val a2 = hookError(a1,(getPos q,err)) | |
14235 | in do_mixed (c1,a2,q1) | |
14236 | end | |
14237 | ||
14238 | (*--------------------------------------------------------------*) | |
14239 | (* do mixed content. handle the document end by printing an *) | |
14240 | (* error and finishing like with an end-tag. *) | |
14241 | (*--------------------------------------------------------------*) | |
14242 | and do_mixed (c,a,q) = | |
14243 | case c | |
14244 | of 0wx00 => if isSpecial q | |
14245 | then let val err = ERR_OMITTED_END_TAG(Index2Element dtd curr) | |
14246 | val a1 = hookError(a,(getPos q,err)) | |
14247 | val pos = getPos q | |
14248 | val a2 = hookEndTag(a1,((pos,pos),curr,NONE)) | |
14249 | in (NONE,(c,a2,q)) | |
14250 | end | |
14251 | else let val a1 = hookEntEnd(a,getPos q) | |
14252 | in do_mixed (getChar(a1,q)) | |
14253 | end | |
14254 | | 0wx26 (* #"&" *) => do_mixed (do_ref (q,getChar(a,q))) | |
14255 | | 0wx3C (* #"<" *) => do_lt (q,getChar(a,q)) | |
14256 | | 0wx5D => do_mixed (do_data (!O_COMPATIBILITY,(c,a,q))) | |
14257 | | _ => do_mixed (do_data (false,(c,a,q))) | |
14258 | in | |
14259 | do_mixed caq | |
14260 | end | |
14261 | ||
14262 | (*--------------------------------------------------------------------*) | |
14263 | (* parse an element, the start tag already read. the second arg holds *) | |
14264 | (* the number of the entity of the start-tag's first char, and the *) | |
14265 | (* start-tag information. The 1st arg is the start value for the user *) | |
14266 | (* data. 3: *) | |
14267 | (* *) | |
14268 | (* [39] element ::= EmptyElemTag *) | |
14269 | (* | STag content ETag *) | |
14270 | (* and 3.1: *) | |
14271 | (* *) | |
14272 | (* Empty-element tags may be used for any element which has no *) | |
14273 | (* content, whether or not it is declared using the keyword EMPTY. *) | |
14274 | (* For interoperability, the empty-element tag must be used, and *) | |
14275 | (* can only be used, for elements which are declared EMPTY. *) | |
14276 | (*--------------------------------------------------------------------*) | |
14277 | and parseElement (dtd,openElems,q0,(stag as (_,curr,_,_,mt),elemInfo),(c,a,q)) = | |
14278 | let | |
14279 | (*--------------------------------------------------------------*) | |
14280 | (* validate whether an element is allowed in mixed/any content. *) | |
14281 | (*--------------------------------------------------------------*) | |
14282 | fun trans_any (a,_) _ = a | |
14283 | fun trans_mixed is (a,q) i = | |
14284 | if member i is then a | |
14285 | else let val err = ERR_BAD_ELEM(Index2Element dtd curr,Index2Element dtd i) | |
14286 | in hookError(a,(getPos q,err)) | |
14287 | end | |
14288 | in | |
14289 | (*-----------------------------------------------------------*) | |
14290 | (* For empty-element tags, verify that the element's declar. *) | |
14291 | (* allows empty content. *) | |
14292 | (*-----------------------------------------------------------*) | |
14293 | if mt then | |
14294 | let val a1 = | |
14295 | if not (!O_VALIDATE andalso hasDtd dtd) then a | |
14296 | else | |
14297 | case #decl elemInfo | |
14298 | of (SOME(CT_EMPTY,_)) => a | |
14299 | | (SOME(CT_ELEMENT(_,dfa),_)) => | |
14300 | if not (dfaFinal(dfa,dfaInitial)) | |
14301 | then hookError(a,(getPos q0,ERR_EMPTY_TAG(Index2Element dtd curr))) | |
14302 | else if not (!O_INTEROPERABILITY) then a | |
14303 | else hookError | |
14304 | (a,(getPos q0,ERR_EMPTY_TAG_INTER (Index2Element dtd curr))) | |
14305 | | _ => if not (!O_INTEROPERABILITY) then a | |
14306 | else hookError(a,(getPos q0,ERR_EMPTY_TAG_INTER | |
14307 | (Index2Element dtd curr))) | |
14308 | in (NONE,(c,hookStartTag(a1,stag),q)) | |
14309 | end | |
14310 | (*-----------------------------------------------------------*) | |
14311 | (* for normal start-tags, check whether the element's decl. *) | |
14312 | (* requires an empty-element tag, or empty content, then *) | |
14313 | (* call the appropriate function that parses the content. *) | |
14314 | (*-----------------------------------------------------------*) | |
14315 | else | |
14316 | let val startEnt = getEntId q0 | |
14317 | in if !O_VALIDATE then | |
14318 | case getOpt(#decl elemInfo,(CT_ANY,false)) | |
14319 | of (CT_ANY,_) => parseMixedContent dtd | |
14320 | (openElems,startEnt,curr,trans_any) (c,hookStartTag(a,stag),q) | |
14321 | | (CT_MIXED is,_) => parseMixedContent dtd | |
14322 | (openElems,startEnt,curr,trans_mixed is) (c,hookStartTag(a,stag),q) | |
14323 | | (CT_ELEMENT(_,dfa),ext) => parseElementContent dtd | |
14324 | (openElems,startEnt,curr,dfa,ext,false) | |
14325 | (c,hookStartTag(a,stag),q) | |
14326 | | (CT_EMPTY,_) => | |
14327 | let val a1 = if not (!O_INTEROPERABILITY) then a | |
14328 | else let val err = ERR_MUST_BE_EMPTY(Index2Element dtd curr) | |
14329 | in hookError(a,(getPos q0,err)) | |
14330 | end | |
14331 | val a2 = hookStartTag(a1,stag) | |
14332 | in parseElementContent dtd | |
14333 | (openElems,startEnt,curr,emptyDfa,false,true) (c,a2,q) | |
14334 | end | |
14335 | else parseMixedContent dtd | |
14336 | (openElems,startEnt,curr,trans_any) (c,hookStartTag(a,stag),q) | |
14337 | end | |
14338 | end | |
14339 | end | |
14340 | (* stop of ../../Parser/Parse/parseContent.sml *) | |
14341 | (* start of ../../Parser/Parse/parseDocument.sml *) | |
14342 | (*--------------------------------------------------------------------------*) | |
14343 | (* Structure: ParseDocument *) | |
14344 | (* *) | |
14345 | (* Exceptions raised by functions in this structure: *) | |
14346 | (* parseDocTypeDecl : none *) | |
14347 | (*--------------------------------------------------------------------------*) | |
14348 | functor Parse | |
14349 | (structure Dtd : Dtd | |
14350 | structure Hooks : Hooks | |
14351 | structure Resolve : Resolve | |
14352 | structure ParserOptions : ParserOptions) : | |
14353 | sig | |
14354 | val parseDocument : Uri.Uri option -> Dtd.Dtd option -> Hooks.AppData -> Hooks.AppFinal | |
14355 | end | |
14356 | = | |
14357 | struct | |
14358 | structure ParseBase = ParseBase (structure Dtd = Dtd | |
14359 | structure Hooks = Hooks | |
14360 | structure Resolve = Resolve | |
14361 | structure ParserOptions = ParserOptions) | |
14362 | ||
14363 | structure ParseContent = ParseContent (structure ParseBase = ParseBase) | |
14364 | ||
14365 | open | |
14366 | Base UniChar Errors UniClasses Uri | |
14367 | ParseContent | |
14368 | ||
14369 | val THIS_MODULE = "ParseContent" | |
14370 | ||
14371 | datatype Where = | |
14372 | PROLOG | |
14373 | | EPILOG | |
14374 | | INSTANCE of int option | |
14375 | ||
14376 | fun locOf wher = | |
14377 | case wher | |
14378 | of PROLOG => LOC_PROLOG | |
14379 | | INSTANCE _ => LOC_PROLOG | |
14380 | | EPILOG => LOC_EPILOG | |
14381 | ||
14382 | fun checkRoot dtd (a,q) (doc,stag as ((_,elem,_,_,_),_)) = | |
14383 | if !O_VALIDATE | |
14384 | then case doc | |
14385 | of NONE => a | |
14386 | | SOME doc => | |
14387 | if doc=elem then a | |
14388 | else let val err = ERR_ROOT_ELEM(Index2Element dtd doc, | |
14389 | Index2Element dtd elem) | |
14390 | in hookError(a,(getPos q,err)) | |
14391 | end | |
14392 | else a | |
14393 | ||
14394 | fun parseDoc dtd caq = | |
14395 | let | |
14396 | fun do_data wher caq = | |
14397 | let fun doit hadError ws (c,a,q) = | |
14398 | case c | |
14399 | of 0wx00 => (ws,(c,a,q)) | |
14400 | | 0wx26 (* #"&" *) => (ws,(c,a,q)) | |
14401 | | 0wx3C (* #"<" *) => (ws,(c,a,q)) | |
14402 | | 0wx09 (* #"\t"*) => doit hadError (c::ws) (getChar(a,q)) | |
14403 | | 0wx0A (* #"\n"*) => doit hadError (c::ws) (getChar(a,q)) | |
14404 | | 0wx20 (* #" " *) => doit hadError (c::ws) (getChar(a,q)) | |
14405 | | _ => let val a1 = if hadError then a | |
14406 | else hookError(a,(getPos q,ERR_FORBIDDEN_HERE | |
14407 | (IT_DATA nil,locOf wher))) | |
14408 | in doit true ws (getChar(a1,q)) | |
14409 | end | |
14410 | ||
14411 | val (ws,(c1,a1,q1)) = doit false nil caq | |
14412 | val a2 = if null ws then a1 | |
14413 | else hookWhite(a1,Data2Vector (rev ws)) | |
14414 | in (c1,a2,q1) | |
14415 | end | |
14416 | ||
14417 | fun do_decl wher q0 (c,a,q) = | |
14418 | case c | |
14419 | of 0wx2D (* #"-" *) => | |
14420 | let val (c1,a1,q1) = getChar(a,q) | |
14421 | in if c1=0wx2D then (wher,parseComment (getPos q0) (a1,q1)) | |
14422 | else let val err = ERR_EXPECTED(expDash,[c1]) | |
14423 | val a2 = hookError(a1,(getPos q1,err)) | |
14424 | val caq2 = recoverDecl false (c1,a2,q1) | |
14425 | in (wher,caq2) | |
14426 | end | |
14427 | end | |
14428 | | 0wx5B (* #"[" *) => | |
14429 | let | |
14430 | val err = ERR_FORBIDDEN_HERE (IT_CDATA,locOf wher) | |
14431 | val a1 = hookError(a,(getPos q0,err)) | |
14432 | val caq2 = skipBadSection (getChar(a1,q)) | |
14433 | in (wher,caq2) | |
14434 | end | |
14435 | | _ => | |
14436 | case wher | |
14437 | of PROLOG => | |
14438 | (let val (name,(c1,a1,q1)) = parseName (c,a,q) | |
14439 | handle NotFound (c,a,q) => | |
14440 | let val err = expectedOrEnded(expDashDocLbrk,LOC_DECL) c | |
14441 | in raise SyntaxError (c,hookError(a,(getPos q,err)),q) | |
14442 | end | |
14443 | ||
14444 | val _ = if name=[0wx44,0wx4f,0wx43,0wx54,0wx59,0wx50,0wx45] | |
14445 | (* "DOCTYPE" *) then () | |
14446 | else let val err = ERR_EXPECTED(expDashDocLbrk,name) | |
14447 | val a2 = hookError(a1,(getPos q,err)) | |
14448 | in raise SyntaxError (c1,a2,q1) | |
14449 | end | |
14450 | ||
14451 | val (doc,caq2) = parseDocTypeDecl dtd (c1,a1,q1) | |
14452 | in (INSTANCE doc,caq2) | |
14453 | end | |
14454 | handle SyntaxError caq => (PROLOG,recoverDecl true caq)) | |
14455 | ||
14456 | | _ => let val loc = if wher=EPILOG then LOC_EPILOG else LOC_AFTER_DTD | |
14457 | val err = ERR_FORBIDDEN_HERE (IT_DECL,loc) | |
14458 | val a1 = hookError(a,(getPos q0,err)) | |
14459 | val caq2 = skipDecl true (c,a1,q) | |
14460 | in (wher,caq2) | |
14461 | end | |
14462 | ||
14463 | and doit wher (c,a,q) = | |
14464 | case c | |
14465 | of 0wx00 => if isSpecial q then (wher,(a,q)) | |
14466 | else doit wher (getChar(a,q)) | |
14467 | (*--------------------------------------------------------------*) | |
14468 | (* References are forbidden outside the document element *) | |
14469 | (*--------------------------------------------------------------*) | |
14470 | | 0wx26 (* #"&" *) => | |
14471 | let | |
14472 | val (c1,a1,q1) = getChar(a,q) | |
14473 | val caq2 = | |
14474 | if c1=0wx23 (* #"#" *) | |
14475 | then let val err = ERR_FORBIDDEN_HERE(IT_CHAR_REF,locOf wher) | |
14476 | val a2 = hookError(a1,(getPos q,err)) | |
14477 | in skipCharRef (a2,q1) | |
14478 | end | |
14479 | else let val err = ERR_FORBIDDEN_HERE(IT_REF,locOf wher) | |
14480 | val a2 = hookError(a1,(getPos q,err)) | |
14481 | in skipReference (c1,a2,q1) | |
14482 | end | |
14483 | in doit wher caq2 | |
14484 | end | |
14485 | | 0wx3C (* #"<" *) => | |
14486 | let val (c1,a1,q1) = getChar (a,q) | |
14487 | in case c1 | |
14488 | of 0wx21 (* #"!" *) => | |
14489 | let val (wher1,caq2) = do_decl wher q (getChar(a1,q1)) | |
14490 | in doit wher1 caq2 | |
14491 | end | |
14492 | | 0wx2F (* #"/" *) => | |
14493 | let | |
14494 | val err = ERR_FORBIDDEN_HERE(IT_ETAG,locOf wher) | |
14495 | val a2 = hookError(a1,(getPos q,err)) | |
14496 | val caq3 = skipTag LOC_ETAG (a2,q1) | |
14497 | in doit wher caq3 | |
14498 | end | |
14499 | | 0wx3F (* #"?" *) => doit wher (parseProcInstr (getPos q) (a1,q1)) | |
14500 | | _ => | |
14501 | if isName c1 then | |
14502 | let val wher1 = | |
14503 | case wher | |
14504 | of PROLOG => INSTANCE NONE | |
14505 | | _ => wher | |
14506 | in case wher1 | |
14507 | of PROLOG => | |
14508 | raise InternalError(THIS_MODULE,"parseDoc.doit","") | |
14509 | | EPILOG => | |
14510 | let | |
14511 | val err = ERR_FORBIDDEN_HERE(IT_STAG,LOC_EPILOG) | |
14512 | val a2 = hookError(a1,(getPos q,err)) | |
14513 | val caq3 = skipTag LOC_STAG (a2,q1) | |
14514 | in doit EPILOG caq3 | |
14515 | end | |
14516 | | INSTANCE doc => | |
14517 | (let | |
14518 | val a2 = | |
14519 | if not (!O_VALIDATE) orelse isSome doc then a1 | |
14520 | else hookError(a1,(getPos q,ERR_NO_DTD)) | |
14521 | val (stag,(c3,a3,q3)) = parseSTag | |
14522 | dtd (getPos q) (c1,a2,q1) | |
14523 | val a4 = checkRoot dtd (a3,q1) (doc,stag) | |
14524 | val (opt,(c5,a5,q5)) = parseElement | |
14525 | (dtd,nil,q,stag,(c3,a4,q3)) | |
14526 | val a6 = checkDefinedIds dtd (a5,q5) | |
14527 | in case opt | |
14528 | of NONE => doit EPILOG (c5,a6,q5) | |
14529 | | SOME (_,_,startPos,_) => | |
14530 | let | |
14531 | val err = ERR_FORBIDDEN_HERE(IT_ETAG,LOC_EPILOG) | |
14532 | val a7 = hookError(a6,(startPos,err)) | |
14533 | in doit EPILOG (c5,a7,q5) | |
14534 | end | |
14535 | end | |
14536 | handle SyntaxError caq => doit wher1 caq) | |
14537 | end | |
14538 | else let val err = ERR_FORBIDDEN_HERE(IT_CHAR 0wx3C,locOf wher) | |
14539 | val a2 = hookError(a1,(getPos q,err)) | |
14540 | in doit wher (c1,a2,q1) | |
14541 | end | |
14542 | end | |
14543 | | _ => let val caq1 = do_data wher (c,a,q) | |
14544 | in doit wher caq1 | |
14545 | end | |
14546 | in | |
14547 | doit PROLOG caq | |
14548 | end | |
14549 | ||
14550 | (* to false. (cf. 2.9) *) | |
14551 | (* *) | |
14552 | (* ... If ... there is no standalone document declaration, the *) | |
14553 | (* value "no" is assumed. *) | |
14554 | fun parseDocument uriOpt dtdOpt a = | |
14555 | let | |
14556 | val dtd = case dtdOpt | |
14557 | of NONE => initDtdTables () | |
14558 | | SOME dtd => dtd | |
14559 | val (enc,xmlDecl,(c1,a1,q1)) = openDocument uriOpt a | |
14560 | val uri = getUri q1 | |
14561 | val alone = case xmlDecl | |
14562 | of (SOME(_,_,SOME sa)) => sa | |
14563 | | _ => false | |
14564 | val _ = if alone then setStandAlone dtd true else () | |
14565 | val a2 = hookXml(a1,(uri,enc,xmlDecl)) | |
14566 | val (wher,(a3,q3)) = parseDoc dtd (c1,a2,q1) | |
14567 | val _ = closeAll q3 | |
14568 | val a4 = case wher | |
14569 | of EPILOG => a3 | |
14570 | | _ => hookError(a3,(getPos q3,ERR_ENDED_IN_PROLOG)) | |
14571 | in hookFinish a4 | |
14572 | end | |
14573 | handle CantOpenFile(fmsg,a) => | |
14574 | let val a1 = hookError(a,(nullPosition,ERR_NO_SUCH_FILE fmsg)) | |
14575 | in hookFinish a1 | |
14576 | end | |
14577 | end | |
14578 | (* stop of ../../Parser/Parse/parseDocument.sml *) | |
14579 | (* start of ../../Catalog/catError.sml *) | |
14580 | ||
14581 | ||
14582 | ||
14583 | ||
14584 | ||
14585 | ||
14586 | ||
14587 | ||
14588 | ||
14589 | ||
14590 | signature CatError = | |
14591 | sig | |
14592 | type Position | |
14593 | val nullPosition : Position | |
14594 | val Position2String : Position -> string | |
14595 | ||
14596 | datatype Location = | |
14597 | LOC_CATALOG | |
14598 | | LOC_COMMENT | |
14599 | | LOC_NOCOMMENT | |
14600 | | LOC_PUBID | |
14601 | | LOC_SYSID | |
14602 | ||
14603 | datatype Expected = | |
14604 | EXP_NAME | |
14605 | | EXP_LITERAL | |
14606 | ||
14607 | datatype CatError = | |
14608 | ERR_DECODE_ERROR of Decode.Error.DecodeError | |
14609 | | ERR_NO_SUCH_FILE of string * string | |
14610 | | ERR_ILLEGAL_HERE of UniChar.Char * Location | |
14611 | | ERR_MISSING_WHITE | |
14612 | | ERR_EOF of Location | |
14613 | | ERR_EXPECTED of Expected * UniChar.Char | |
14614 | | ERR_XML of Errors.Error | |
14615 | | ERR_MISSING_ATT of UniChar.Data * UniChar.Data | |
14616 | | ERR_NON_PUBID of UniChar.Data * UniChar.Data | |
14617 | ||
14618 | val catMessage : CatError -> string list | |
14619 | end | |
14620 | ||
14621 | structure CatError : CatError = | |
14622 | struct | |
14623 | open Errors UtilError UtilString | |
14624 | ||
14625 | type Position = string * int * int | |
14626 | val nullPosition = ("",0,0) | |
14627 | ||
14628 | fun Position2String (fname,l,c) = | |
14629 | if fname="" then "" | |
14630 | else String.concat ["[",fname,":",Int2String l,".",Int2String c,"]"] | |
14631 | ||
14632 | datatype Location = | |
14633 | LOC_CATALOG | |
14634 | | LOC_COMMENT | |
14635 | | LOC_NOCOMMENT | |
14636 | | LOC_PUBID | |
14637 | | LOC_SYSID | |
14638 | ||
14639 | fun Location2String loc = | |
14640 | case loc | |
14641 | of LOC_CATALOG => "catalog file" | |
14642 | | LOC_COMMENT => "comment" | |
14643 | | LOC_NOCOMMENT => "something other than a comment" | |
14644 | | LOC_PUBID => "public identifier" | |
14645 | | LOC_SYSID => "system identifier" | |
14646 | ||
14647 | fun InLocation2String loc = | |
14648 | case loc | |
14649 | of LOC_CATALOG => "in a catalog file" | |
14650 | | LOC_COMMENT => "in a comment" | |
14651 | | LOC_NOCOMMENT => "outside of comments" | |
14652 | | LOC_PUBID => "in a public identifier" | |
14653 | | LOC_SYSID => "in a system identifier" | |
14654 | ||
14655 | datatype Expected = | |
14656 | EXP_NAME | |
14657 | | EXP_LITERAL | |
14658 | ||
14659 | fun Expected2String exp = | |
14660 | case exp | |
14661 | of EXP_NAME => "a name" | |
14662 | | EXP_LITERAL => "a literal" | |
14663 | ||
14664 | datatype CatError = | |
14665 | ERR_DECODE_ERROR of Decode.Error.DecodeError | |
14666 | | ERR_NO_SUCH_FILE of string * string | |
14667 | | ERR_ILLEGAL_HERE of UniChar.Char * Location | |
14668 | | ERR_MISSING_WHITE | |
14669 | | ERR_EOF of Location | |
14670 | | ERR_EXPECTED of Expected * UniChar.Char | |
14671 | | ERR_XML of Error | |
14672 | | ERR_MISSING_ATT of UniChar.Data * UniChar.Data | |
14673 | | ERR_NON_PUBID of UniChar.Data * UniChar.Data | |
14674 | ||
14675 | fun catMessage err = | |
14676 | case err | |
14677 | of ERR_DECODE_ERROR err => Decode.Error.decodeMessage err | |
14678 | | ERR_NO_SUCH_FILE(f,msg) => ["Could not open file",quoteErrorString f,"("^msg^")"] | |
14679 | ||
14680 | | ERR_ILLEGAL_HERE (c,loc) => | |
14681 | ["Character",quoteErrorChar c,"is not allowed",InLocation2String loc] | |
14682 | ||
14683 | | ERR_MISSING_WHITE => ["Missing white space"] | |
14684 | | ERR_EOF loc => [toUpperFirst (Location2String loc),"ended by end of file"] | |
14685 | | ERR_EXPECTED (exp,c) => | |
14686 | ["Expected",Expected2String exp,"but found",quoteErrorChar c] | |
14687 | ||
14688 | | ERR_XML err => errorMessage err | |
14689 | | ERR_MISSING_ATT(elem,att) => | |
14690 | ["Element",quoteErrorData elem,"has no",quoteErrorData att,"attribute"] | |
14691 | | ERR_NON_PUBID(att,cs) => | |
14692 | ["Value specified for attribute",quoteErrorData att,"contains non-PublicId", | |
14693 | case cs | |
14694 | of [c] => "character"^quoteErrorChar c | |
14695 | | cs => List2xString ("characters ",", ","") quoteErrorChar cs] | |
14696 | end | |
14697 | (* stop of ../../Catalog/catError.sml *) | |
14698 | (* start of ../../Catalog/catParams.sml *) | |
14699 | ||
14700 | ||
14701 | ||
14702 | ||
14703 | ||
14704 | signature CatParams = | |
14705 | sig | |
14706 | val O_CATALOG_FILES : Uri.Uri list ref | |
14707 | val O_PREFER_SOCAT : bool ref | |
14708 | val O_PREFER_SYSID : bool ref | |
14709 | val O_PREFER_CATALOG : bool ref | |
14710 | val O_SUPPORT_REMAP : bool ref | |
14711 | val O_CATALOG_ENC : Encoding.Encoding ref | |
14712 | ||
14713 | val catError : CatError.Position * CatError.CatError -> unit | |
14714 | end | |
14715 | ||
14716 | (* stop of ../../Catalog/catParams.sml *) | |
14717 | (* start of ../../Unicode/Uri/uriDict.sml *) | |
14718 | ||
14719 | ||
14720 | ||
14721 | ||
14722 | ||
14723 | ||
14724 | ||
14725 | structure KeyUri : Key = | |
14726 | struct | |
14727 | type Key = Uri.Uri | |
14728 | ||
14729 | val null = Uri.emptyUri | |
14730 | val compare = Uri.compareUri | |
14731 | val toString = Uri.Uri2String | |
14732 | val hash = Uri.hashUri | |
14733 | end | |
14734 | ||
14735 | structure UriDict = Dict (structure Key = KeyUri) | |
14736 | (* stop of ../../Unicode/Uri/uriDict.sml *) | |
14737 | (* start of ../../Catalog/catData.sml *) | |
14738 | ||
14739 | ||
14740 | structure CatData = | |
14741 | struct | |
14742 | datatype CatEntry = | |
14743 | E_BASE of Uri.Uri | |
14744 | | E_DELEGATE of string * Uri.Uri | |
14745 | | E_EXTEND of Uri.Uri | |
14746 | | E_MAP of string * Uri.Uri | |
14747 | | E_REMAP of Uri.Uri * Uri.Uri | |
14748 | ||
14749 | type Catalog = Uri.Uri * CatEntry list | |
14750 | end | |
14751 | (* stop of ../../Catalog/catData.sml *) | |
14752 | (* start of ../../Catalog/catFile.sml *) | |
14753 | ||
14754 | ||
14755 | ||
14756 | ||
14757 | ||
14758 | ||
14759 | ||
14760 | ||
14761 | ||
14762 | signature CatFile = | |
14763 | sig | |
14764 | type CatFile | |
14765 | type Position | |
14766 | ||
14767 | val catOpenFile : Uri.Uri -> CatFile | |
14768 | val catCloseFile : CatFile -> unit | |
14769 | val catGetChar : CatFile -> UniChar.Char * CatFile | |
14770 | val catPos : CatFile -> CatError.Position | |
14771 | end | |
14772 | ||
14773 | functor CatFile ( structure Params : CatParams ) : CatFile = | |
14774 | struct | |
14775 | open UniChar CatError Decode Params Uri UtilError | |
14776 | ||
14777 | (* column, line, break *) | |
14778 | type PosInfo = int * int * bool | |
14779 | val startPos = (0,1,false) | |
14780 | ||
14781 | datatype CatFile = | |
14782 | NOFILE of string * PosInfo | |
14783 | | DIRECT of DecFile * PosInfo | |
14784 | ||
14785 | fun catPos cf = | |
14786 | case cf | |
14787 | of NOFILE (uri,(col,line,_)) => (uri,line,col) | |
14788 | | DIRECT (dec,(col,line,_)) => (decName dec,line,col) | |
14789 | ||
14790 | fun catOpenFile uri = | |
14791 | let val dec = decOpenUni(SOME uri,!O_CATALOG_ENC) | |
14792 | in DIRECT(dec,startPos) | |
14793 | end | |
14794 | handle NoSuchFile fmsg => let val _ = catError(nullPosition,ERR_NO_SUCH_FILE fmsg) | |
14795 | in NOFILE(Uri2String uri,startPos) | |
14796 | end | |
14797 | ||
14798 | fun catCloseFile cf = | |
14799 | case cf | |
14800 | of NOFILE _ => () | |
14801 | | DIRECT(dec,_) => ignore (decClose dec) | |
14802 | ||
14803 | fun catGetChar cf = | |
14804 | case cf | |
14805 | of NOFILE _ => (0wx00,cf) | |
14806 | | DIRECT(dec,(col,line,brk)) => | |
14807 | (let val (c,dec1) = decGetChar dec | |
14808 | in case c | |
14809 | of 0wx09 => (c,DIRECT(dec1,(col+1,line,false))) | |
14810 | | 0wx0A => if brk then catGetChar(DIRECT(dec1,(col,line,false))) | |
14811 | else (c,DIRECT(dec1,(0,line+1,false))) | |
14812 | | 0wx0D => (0wx0A,DIRECT(dec1,(0,line+1,true))) | |
14813 | | _ => if c>=0wx20 then (c,DIRECT(dec1,(col+1,line,false))) | |
14814 | else let val err = ERR_ILLEGAL_HERE(c,LOC_CATALOG) | |
14815 | val _ = catError(catPos cf,err) | |
14816 | in catGetChar(DIRECT(dec1,(col+1,line,false))) | |
14817 | end | |
14818 | end | |
14819 | handle DecEof dec => (0wx00,NOFILE(decName dec,(col,line,brk))) | |
14820 | | DecError(dec,_,err) => | |
14821 | let val _ = catError(catPos cf,ERR_DECODE_ERROR err) | |
14822 | in catGetChar(DIRECT(dec,(col,line,false))) | |
14823 | end | |
14824 | ) | |
14825 | end | |
14826 | ||
14827 | (* stop of ../../Catalog/catFile.sml *) | |
14828 | (* start of ../../Catalog/socatParse.sml *) | |
14829 | ||
14830 | ||
14831 | ||
14832 | ||
14833 | ||
14834 | ||
14835 | ||
14836 | ||
14837 | ||
14838 | signature SocatParse = | |
14839 | sig | |
14840 | val parseSoCat : Uri.Uri -> CatData.Catalog | |
14841 | end | |
14842 | ||
14843 | functor SocatParse ( structure Params : CatParams ) : SocatParse = | |
14844 | struct | |
14845 | structure CatFile = CatFile ( structure Params = Params ) | |
14846 | ||
14847 | open CatData CatError CatFile Params UniChar UniClasses Uri | |
14848 | ||
14849 | exception SyntaxError of UniChar.Char * CatFile.CatFile | |
14850 | exception NotFound of UniChar.Char * CatFile.CatFile | |
14851 | ||
14852 | val getChar = catGetChar | |
14853 | ||
14854 | fun parseName' (c,f) = | |
14855 | if isName c then let val (cs,cf1) = parseName' (getChar f) | |
14856 | in (c::cs,cf1) | |
14857 | end | |
14858 | else (nil,(c,f)) | |
14859 | fun parseName (c,f) = | |
14860 | if isNms c then let val (cs,cf1) = parseName' (getChar f) | |
14861 | in (c::cs,cf1) | |
14862 | end | |
14863 | else raise NotFound (c,f) | |
14864 | ||
14865 | datatype Keyword = | |
14866 | KW_BASE | |
14867 | | KW_CATALOG | |
14868 | | KW_DELEGATE | |
14869 | | KW_PUBLIC | |
14870 | | KW_SYSTEM | |
14871 | | KW_OTHER of UniChar.Data | |
14872 | ||
14873 | fun parseKeyword cf = | |
14874 | let | |
14875 | val (name,cf1) = parseName cf | |
14876 | val kw = case name | |
14877 | of [0wx42,0wx41,0wx53,0wx45] => KW_BASE | |
14878 | | [0wx43,0wx41,0wx54,0wx41,0wx4c,0wx4f,0wx47] => KW_CATALOG | |
14879 | | [0wx44,0wx45,0wx4c,0wx45,0wx47,0wx41,0wx54,0wx45] => KW_DELEGATE | |
14880 | | [0wx50,0wx55,0wx42,0wx4c,0wx49,0wx43] => KW_PUBLIC | |
14881 | | [0wx53,0wx59,0wx53,0wx54,0wx45,0wx4d] => KW_SYSTEM | |
14882 | | _ => KW_OTHER name | |
14883 | in (kw,cf1) | |
14884 | end | |
14885 | ||
14886 | fun parseSysLit' quote f = | |
14887 | let | |
14888 | fun doit text (c,f) = | |
14889 | if c=quote then (text,getChar f) | |
14890 | else if c<>0wx0 then doit (c::text) (getChar f) | |
14891 | else let val _ = catError(catPos f,ERR_EOF LOC_SYSID) | |
14892 | in (text,(c,f)) | |
14893 | end | |
14894 | val (text,cf1) = doit nil (getChar f) | |
14895 | in (Data2Uri(rev text),cf1) | |
14896 | end | |
14897 | fun parseSysLit req (c,f) = | |
14898 | if c=0wx22 orelse c=0wx27 then parseSysLit' c f | |
14899 | else if req then let val _ = catError(catPos f,ERR_EXPECTED(EXP_LITERAL,c)) | |
14900 | in raise SyntaxError (c,f) | |
14901 | end | |
14902 | else raise NotFound (c,f) | |
14903 | ||
14904 | fun parsePubLit' quote f = | |
14905 | let | |
14906 | fun doit (hadSpace,atStart,text) (c,f) = | |
14907 | case c | |
14908 | of 0wx0 => let val _ = catError(catPos f,ERR_EOF LOC_PUBID) | |
14909 | in (text,(c,f)) | |
14910 | end | |
14911 | | 0wx0A => doit (true,atStart,text) (getChar f) | |
14912 | | 0wx20 => doit (true,atStart,text) (getChar f) | |
14913 | | _ => | |
14914 | if c=quote then (text,getChar f) | |
14915 | else if isPubid c | |
14916 | then if hadSpace andalso not atStart | |
14917 | then doit (false,false,c::0wx20::text) (getChar f) | |
14918 | else doit (false,false,c::text) (getChar f) | |
14919 | else let val _ = catError(catPos f,ERR_ILLEGAL_HERE(c,LOC_PUBID)) | |
14920 | in doit (hadSpace,atStart,text) (getChar f) | |
14921 | end | |
14922 | val (text,cf1) = doit (false,true,nil) (getChar f) | |
14923 | in (Latin2String(rev text),cf1) | |
14924 | end | |
14925 | fun parsePubLit (c,f) = | |
14926 | if c=0wx22 orelse c=0wx27 then parsePubLit' c f | |
14927 | else let val _ = catError(catPos f,ERR_EXPECTED(EXP_LITERAL,c)) | |
14928 | in raise SyntaxError (c,f) | |
14929 | end | |
14930 | ||
14931 | fun skipComment (c,f) = | |
14932 | case c | |
14933 | of 0wx00 => let val _ = catError(catPos f,ERR_EOF LOC_COMMENT) | |
14934 | in (c,f) | |
14935 | end | |
14936 | | 0wx2D => let val (c1,f1) = getChar f | |
14937 | in if c1 = 0wx2D then (getChar f1) else skipComment (c1,f1) | |
14938 | end | |
14939 | | _ => skipComment (getChar f) | |
14940 | fun skipCopt (c,f) = | |
14941 | case c | |
14942 | of 0wx00 => (c,f) | |
14943 | | 0wx2D => let val (c1,f1) = getChar f | |
14944 | in if c1=0wx2D then skipComment (getChar f1) | |
14945 | else let val _ = catError(catPos f,ERR_ILLEGAL_HERE(c,LOC_NOCOMMENT)) | |
14946 | in (c1,f1) | |
14947 | end | |
14948 | end | |
14949 | | _ => (c,f) | |
14950 | ||
14951 | fun skipScomm req0 cf = | |
14952 | let | |
14953 | fun endit req (c,f) = | |
14954 | if req andalso c<>0wx00 | |
14955 | then let val _ = catError(catPos f,ERR_MISSING_WHITE) | |
14956 | in (c,f) | |
14957 | end | |
14958 | else (c,f) | |
14959 | fun doit req (c,f) = | |
14960 | case c | |
14961 | of 0wx00 => endit req (c,f) | |
14962 | | 0wx09 => doit false (getChar f) | |
14963 | | 0wx0A => doit false (getChar f) | |
14964 | | 0wx20 => doit false (getChar f) | |
14965 | | 0wx22 => endit req (c,f) | |
14966 | | 0wx27 => endit req (c,f) | |
14967 | | 0wx2D => | |
14968 | let val (c1,f1) = getChar f | |
14969 | in if c1=0wx2D | |
14970 | then let val _ = if not req then () | |
14971 | else catError(catPos f1,ERR_MISSING_WHITE) | |
14972 | val cf1 = skipComment (getChar f1) | |
14973 | in doit true cf1 | |
14974 | end | |
14975 | else let val _ = catError(catPos f,ERR_ILLEGAL_HERE(c,LOC_NOCOMMENT)) | |
14976 | in doit req (c1,f1) | |
14977 | end | |
14978 | end | |
14979 | | _ => if isNms c then endit req (c,f) | |
14980 | else let val _ = catError(catPos f,ERR_ILLEGAL_HERE(c,LOC_NOCOMMENT)) | |
14981 | in doit req (getChar f) | |
14982 | end | |
14983 | in doit req0 cf | |
14984 | end | |
14985 | ||
14986 | val skipWS = skipScomm true | |
14987 | val skipCommWS = (skipScomm false) o skipCopt | |
14988 | val skipWSComm = skipScomm false | |
14989 | ||
14990 | fun skipOther cf = | |
14991 | let | |
14992 | val cf1 = skipWS cf | |
14993 | val cf2 = let val (_,cf') = parseName cf1 | |
14994 | in skipWS cf' | |
14995 | end | |
14996 | handle NotFound cf => cf | |
14997 | ||
14998 | fun doit cf = | |
14999 | let val (_,cf1) = parseSysLit false cf | |
15000 | in doit (skipWS cf1) | |
15001 | end | |
15002 | handle NotFound(c,f) => (c,f) | |
15003 | in | |
15004 | (NONE,doit cf2) | |
15005 | end | |
15006 | ||
15007 | fun parseBase cf = | |
15008 | let | |
15009 | val cf1 = skipWS cf | |
15010 | val (lit,cf2) = parseSysLit true cf1 | |
15011 | val cf3 = skipWS cf2 | |
15012 | in | |
15013 | (SOME(E_BASE lit),cf3) | |
15014 | end | |
15015 | ||
15016 | fun parseExtend cf = | |
15017 | let | |
15018 | val cf1 = skipWS cf | |
15019 | val (lit,cf2) = parseSysLit true cf1 | |
15020 | val cf3 = skipWS cf2 | |
15021 | in | |
15022 | (SOME(E_EXTEND lit),cf3) | |
15023 | end | |
15024 | ||
15025 | fun parseDelegate cf = | |
15026 | let | |
15027 | val cf1 = skipWS cf | |
15028 | val (pub,cf2) = parsePubLit cf1 | |
15029 | val cf3 = skipWS cf2 | |
15030 | val (sys,cf4) = parseSysLit true cf3 | |
15031 | val cf5 = skipWS cf4 | |
15032 | in | |
15033 | (SOME(E_DELEGATE(pub,sys)),cf5) | |
15034 | end | |
15035 | ||
15036 | fun parseRemap cf = | |
15037 | let | |
15038 | val cf1 = skipWS cf | |
15039 | val (sys0,cf2) = parseSysLit true cf1 | |
15040 | val cf3 = skipWS cf2 | |
15041 | val (sys,cf4) = parseSysLit true cf3 | |
15042 | val cf5 = skipWS cf4 | |
15043 | in | |
15044 | (SOME(E_REMAP(sys0,sys)),cf5) | |
15045 | end | |
15046 | ||
15047 | fun parseMap cf = | |
15048 | let | |
15049 | val cf1 = skipWS cf | |
15050 | val (pub,cf2) = parsePubLit cf1 | |
15051 | val cf3 = skipWS cf2 | |
15052 | val (sys,cf4) = parseSysLit true cf3 | |
15053 | val cf5 = skipWS cf4 | |
15054 | in | |
15055 | (SOME(E_MAP(pub,sys)),cf5) | |
15056 | end | |
15057 | ||
15058 | fun recover cf = | |
15059 | let | |
15060 | fun do_lit q (c,f) = | |
15061 | if c=0wx00 then (c,f) | |
15062 | else if c=q then getChar f | |
15063 | else do_lit q (getChar f) | |
15064 | fun do_com (c,f) = | |
15065 | case c | |
15066 | of 0wx00 => (c,f) | |
15067 | | 0wx2D => let val (c1,f1) = getChar f | |
15068 | in if c1=0wx2D then getChar f1 | |
15069 | else do_com (c1,f1) | |
15070 | end | |
15071 | | _ => do_com (getChar f) | |
15072 | fun doit (c,f) = | |
15073 | case c | |
15074 | of 0wx00 => (c,f) | |
15075 | | 0wx22 => doit (do_lit c (getChar f)) | |
15076 | | 0wx27 => doit (do_lit c (getChar f)) | |
15077 | | 0wx2D => let val (c1,f1) = getChar f | |
15078 | in if c1=0wx2D then doit (do_com (getChar f1)) | |
15079 | else doit (c1,f1) | |
15080 | end | |
15081 | | _ => if isNms c then (c,f) | |
15082 | else doit (getChar f) | |
15083 | in doit cf | |
15084 | end | |
15085 | ||
15086 | fun parseEntry (cf as (c,f)) = | |
15087 | let val (kw,cf1) = parseKeyword cf handle NotFound cf => raise SyntaxError cf | |
15088 | in case kw | |
15089 | of KW_BASE => parseBase cf1 | |
15090 | | KW_CATALOG => parseExtend cf1 | |
15091 | | KW_DELEGATE => parseDelegate cf1 | |
15092 | | KW_SYSTEM => parseRemap cf1 | |
15093 | | KW_PUBLIC => parseMap cf1 | |
15094 | | KW_OTHER _ => skipOther cf1 | |
15095 | end | |
15096 | handle SyntaxError cf => (NONE,recover cf) | |
15097 | ||
15098 | fun parseDocument cf = | |
15099 | let | |
15100 | fun doit (c,f) = | |
15101 | if c=0wx0 then nil before catCloseFile f | |
15102 | else let val (opt,cf1) = parseEntry (c,f) | |
15103 | val entries = doit cf1 | |
15104 | in case opt | |
15105 | of NONE => entries | |
15106 | | SOME entry => entry::entries | |
15107 | end | |
15108 | ||
15109 | val cf1 = skipCommWS cf | |
15110 | in | |
15111 | doit cf1 | |
15112 | end | |
15113 | ||
15114 | fun parseSoCat uri = | |
15115 | let | |
15116 | val f = catOpenFile uri | |
15117 | val cf1 = getChar f | |
15118 | in | |
15119 | (uri,parseDocument cf1) | |
15120 | end | |
15121 | end | |
15122 | (* stop of ../../Catalog/socatParse.sml *) | |
15123 | (* start of ../../Catalog/catDtd.sml *) | |
15124 | signature CatDtd = | |
15125 | sig | |
15126 | type Dtd | |
15127 | ||
15128 | val baseIdx : int | |
15129 | val delegateIdx : int | |
15130 | val extendIdx : int | |
15131 | val mapIdx : int | |
15132 | val remapIdx : int | |
15133 | ||
15134 | val hrefIdx : int | |
15135 | val pubidIdx : int | |
15136 | val sysidIdx : int | |
15137 | ||
15138 | val Index2AttNot : Dtd -> int -> UniChar.Data | |
15139 | val Index2Element : Dtd -> int -> UniChar.Data | |
15140 | end | |
15141 | ||
15142 | structure CatDtd = | |
15143 | struct | |
15144 | open Dtd | |
15145 | ||
15146 | val baseGi = UniChar.String2Data "Base" | |
15147 | val delegateGi = UniChar.String2Data "Delegate" | |
15148 | val extendGi = UniChar.String2Data "Extend" | |
15149 | val mapGi = UniChar.String2Data "Map" | |
15150 | val remapGi = UniChar.String2Data "Remap" | |
15151 | ||
15152 | val hrefAtt = UniChar.String2Data "HRef" | |
15153 | val pubidAtt = UniChar.String2Data "PublicId" | |
15154 | val sysidAtt = UniChar.String2Data "SystemId" | |
15155 | ||
15156 | fun initDtdTables () = | |
15157 | let | |
15158 | val dtd = Dtd.initDtdTables() | |
15159 | val _ = app (ignore o (Element2Index dtd)) [baseGi,delegateGi,extendGi,mapGi,remapGi] | |
15160 | val _ = app (ignore o (AttNot2Index dtd)) [hrefAtt,pubidAtt,sysidAtt] | |
15161 | in dtd | |
15162 | end | |
15163 | ||
15164 | local | |
15165 | val dtd = initDtdTables() | |
15166 | in | |
15167 | val baseIdx = Element2Index dtd baseGi | |
15168 | val delegateIdx = Element2Index dtd delegateGi | |
15169 | val extendIdx = Element2Index dtd extendGi | |
15170 | val mapIdx = Element2Index dtd mapGi | |
15171 | val remapIdx = Element2Index dtd remapGi | |
15172 | ||
15173 | val hrefIdx = AttNot2Index dtd hrefAtt | |
15174 | val pubidIdx = AttNot2Index dtd pubidAtt | |
15175 | val sysidIdx = AttNot2Index dtd sysidAtt | |
15176 | end | |
15177 | end | |
15178 | (* stop of ../../Catalog/catDtd.sml *) | |
15179 | (* start of ../../Parser/Params/ignore.sml *) | |
15180 | structure IgnoreHooks = | |
15181 | struct | |
15182 | type AppData = unit | |
15183 | type AppFinal = unit | |
15184 | ||
15185 | fun hookXml(a,_) = a | |
15186 | fun hookFinish a = a | |
15187 | ||
15188 | fun hookError(a,_) = a | |
15189 | fun hookWarning(a,_) = a | |
15190 | ||
15191 | fun hookProcInst(a,_) = a | |
15192 | fun hookComment(a,_) = a | |
15193 | fun hookWhite(a,_) = a | |
15194 | fun hookDecl (a,_) = a | |
15195 | ||
15196 | fun hookStartTag(a,_) = a | |
15197 | fun hookEndTag(a,_) = a | |
15198 | fun hookCData(a,_) = a | |
15199 | fun hookData(a,_) = a | |
15200 | ||
15201 | fun hookCharRef(a,_) = a | |
15202 | fun hookGenRef(a,_) = a | |
15203 | fun hookParRef(a,_) = a | |
15204 | fun hookEntEnd(a,_) = a | |
15205 | ||
15206 | fun hookDocType(a,_) = a | |
15207 | fun hookSubset(a,_) = a | |
15208 | fun hookExtSubset(a,_) = a | |
15209 | fun hookEndDtd(a,_) = a | |
15210 | end | |
15211 | (* stop of ../../Parser/Params/ignore.sml *) | |
15212 | (* start of ../../Catalog/catHooks.sml *) | |
15213 | signature CatHooks = | |
15214 | sig | |
15215 | type AppData = CatData.CatEntry list | |
15216 | ||
15217 | val initCatHooks : unit -> AppData | |
15218 | end | |
15219 | ||
15220 | functor CatHooks (structure Params : CatParams | |
15221 | structure Dtd : CatDtd ) = | |
15222 | struct | |
15223 | open | |
15224 | Dtd HookData IgnoreHooks Params UniChar UniClasses Uri UtilList | |
15225 | CatData CatError | |
15226 | ||
15227 | type AppData = Dtd * CatEntry list | |
15228 | type AppFinal = CatEntry list | |
15229 | ||
15230 | fun initCatHooks dtd = (dtd,nil) | |
15231 | ||
15232 | fun hookError (a,(pos,err)) = a before catError (pos,ERR_XML err) | |
15233 | ||
15234 | fun getAtt dtd (pos,elem,att,trans) atts = | |
15235 | let | |
15236 | val cvOpt = findAndMap | |
15237 | (fn (i,ap,_) => if i<>att then NONE | |
15238 | else case ap | |
15239 | of AP_DEFAULT(_,cv,_) => SOME cv | |
15240 | | AP_PRESENT(_,cv,_) => SOME cv | |
15241 | | _ => NONE) | |
15242 | atts | |
15243 | in case cvOpt | |
15244 | of SOME cv => trans (pos,att) cv | |
15245 | | NONE => NONE before catError | |
15246 | (pos,ERR_MISSING_ATT(Index2Element dtd elem,Index2AttNot dtd att)) | |
15247 | end | |
15248 | ||
15249 | fun makePubid dtd (pos,att) cv = | |
15250 | let val (cs,bad) = | |
15251 | Vector.foldr | |
15252 | (fn (c,(cs,bad)) => if isPubid c then (Char2char c::cs,bad) | |
15253 | else (cs,c::bad)) | |
15254 | (nil,nil) cv | |
15255 | in if null bad then SOME(String.implode cs) | |
15256 | else NONE before catError(pos,ERR_NON_PUBID(Index2AttNot dtd att,bad)) | |
15257 | end | |
15258 | ||
15259 | fun makeUri (pos,att) cv = SOME cv | |
15260 | ||
15261 | fun hookStartTag (a as (dtd,items),((_,pos),elem,atts,_,_)) = | |
15262 | if elem=baseIdx | |
15263 | then let val hrefOpt = getAtt dtd (pos,elem,hrefIdx,makeUri) atts | |
15264 | in case hrefOpt | |
15265 | of NONE => a | |
15266 | | SOME href => (dtd,E_BASE (Vector2Uri href)::items) | |
15267 | end | |
15268 | else if elem=delegateIdx | |
15269 | then let val hrefOpt = getAtt dtd (pos,elem,hrefIdx,makeUri) atts | |
15270 | val pubidOpt = getAtt dtd (pos,elem,pubidIdx,makePubid dtd) atts | |
15271 | in case (hrefOpt,pubidOpt) | |
15272 | of (SOME href,SOME pubid) => | |
15273 | (dtd,E_DELEGATE(pubid,Vector2Uri href)::items) | |
15274 | | _ => a | |
15275 | end | |
15276 | else if elem=extendIdx | |
15277 | then let val hrefOpt = getAtt dtd (pos,elem,hrefIdx,makeUri) atts | |
15278 | in case hrefOpt | |
15279 | of NONE => a | |
15280 | | SOME href => (dtd,E_EXTEND (Vector2Uri href)::items) | |
15281 | end | |
15282 | else if elem=mapIdx | |
15283 | then let val hrefOpt = getAtt dtd (pos,elem,hrefIdx,makeUri) atts | |
15284 | val pubidOpt = getAtt dtd (pos,elem,pubidIdx,makePubid dtd) atts | |
15285 | in case (hrefOpt,pubidOpt) | |
15286 | of (SOME href,SOME pubid) => | |
15287 | (dtd,E_MAP(pubid,Vector2Uri href)::items) | |
15288 | | _ => a | |
15289 | end | |
15290 | else if elem=remapIdx | |
15291 | then let val hrefOpt = getAtt dtd (pos,elem,hrefIdx,makeUri) atts | |
15292 | val sysidOpt = getAtt dtd (pos,elem,sysidIdx,makeUri) atts | |
15293 | in case (hrefOpt,sysidOpt) | |
15294 | of (SOME href,SOME sysid) => | |
15295 | (dtd,E_REMAP(Vector2Uri sysid,Vector2Uri href)::items) | |
15296 | | _ => a | |
15297 | end | |
15298 | else a | |
15299 | ||
15300 | fun hookFinish (_,items) = rev items | |
15301 | end | |
15302 | (* stop of ../../Catalog/catHooks.sml *) | |
15303 | (* start of ../../Catalog/catParse.sml *) | |
15304 | signature CatParse = | |
15305 | sig | |
15306 | val parseCatalog : Uri.Uri -> CatData.Catalog | |
15307 | end | |
15308 | ||
15309 | functor CatParse (structure Params : CatParams) : CatParse = | |
15310 | struct | |
15311 | structure SocatParse = SocatParse (structure Params = Params) | |
15312 | ||
15313 | structure ParserOptions = | |
15314 | struct | |
15315 | structure Options = ParserOptions() | |
15316 | open Options | |
15317 | ||
15318 | local | |
15319 | fun setDefaults() = | |
15320 | let | |
15321 | val _ = setParserDefaults() | |
15322 | ||
15323 | val _ = O_WARN_MULT_ENUM := false | |
15324 | val _ = O_WARN_XML_DECL := false | |
15325 | val _ = O_WARN_ATT_NO_ELEM := false | |
15326 | val _ = O_WARN_MULT_ENT_DECL := false | |
15327 | val _ = O_WARN_MULT_NOT_DECL := false | |
15328 | val _ = O_WARN_MULT_ATT_DEF := false | |
15329 | val _ = O_WARN_MULT_ATT_DECL := false | |
15330 | val _ = O_WARN_SHOULD_DECLARE := false | |
15331 | ||
15332 | val _ = O_VALIDATE := false | |
15333 | val _ = O_COMPATIBILITY := false | |
15334 | val _ = O_INTEROPERABILITY := false | |
15335 | ||
15336 | val _ = O_INCLUDE_EXT_PARSED := true | |
15337 | in () | |
15338 | end | |
15339 | in | |
15340 | val setParserDefaults = setDefaults | |
15341 | end | |
15342 | ||
15343 | end | |
15344 | structure CatHooks = CatHooks (structure Params = Params | |
15345 | structure Dtd = CatDtd) | |
15346 | structure Parse = Parse (structure Dtd = CatDtd | |
15347 | structure Hooks = CatHooks | |
15348 | structure Resolve = ResolveNull | |
15349 | structure ParserOptions = ParserOptions) | |
15350 | ||
15351 | open CatHooks CatDtd Parse ParserOptions SocatParse Uri | |
15352 | ||
15353 | fun parseXmlCat uri = | |
15354 | let | |
15355 | val _ = setParserDefaults() | |
15356 | val dtd = initDtdTables() | |
15357 | val items = parseDocument (SOME uri) (SOME dtd) (initCatHooks dtd) | |
15358 | in | |
15359 | (uri,items) | |
15360 | end | |
15361 | ||
15362 | fun isSocatSuffix x = x="soc" orelse x="SOC" | |
15363 | fun isXmlSuffix x = x="xml" orelse x="XML" | |
15364 | ||
15365 | fun parseCatalog uri = | |
15366 | let val suffix = uriSuffix uri | |
15367 | in if isSocatSuffix suffix then parseSoCat uri | |
15368 | else (if isXmlSuffix suffix then parseXmlCat uri | |
15369 | else (if !O_PREFER_SOCAT then parseSoCat uri | |
15370 | else parseXmlCat uri)) | |
15371 | end | |
15372 | end | |
15373 | (* stop of ../../Catalog/catParse.sml *) | |
15374 | (* start of ../../Catalog/catalog.sml *) | |
15375 | ||
15376 | ||
15377 | ||
15378 | ||
15379 | ||
15380 | ||
15381 | ||
15382 | ||
15383 | ||
15384 | signature Catalog = | |
15385 | sig | |
15386 | val resolveExtId : string option * (Uri.Uri * Uri.Uri) option -> Uri.Uri option | |
15387 | end | |
15388 | ||
15389 | functor Catalog ( structure Params : CatParams ) : Catalog = | |
15390 | struct | |
15391 | structure CatParse = CatParse ( structure Params = Params ) | |
15392 | ||
15393 | open CatData CatParse Params Uri UriDict | |
15394 | ||
15395 | val catDict = makeDict("catalog",6,NONE:Catalog option) | |
15396 | ||
15397 | fun getCatalog uri = | |
15398 | let val idx = getIndex(catDict,uri) | |
15399 | in case getByIndex(catDict,idx) | |
15400 | of SOME cat => cat | |
15401 | | NONE => let val cat = parseCatalog uri | |
15402 | val _ = setByIndex(catDict,idx,SOME cat) | |
15403 | in cat | |
15404 | end | |
15405 | end | |
15406 | ||
15407 | datatype SearchType = | |
15408 | SYS of Uri | |
15409 | | PUB of string | |
15410 | datatype SearchResult = | |
15411 | FOUND of Uri * Uri | |
15412 | | NOTFOUND of Uri list | |
15413 | ||
15414 | fun searchId id = | |
15415 | let | |
15416 | fun searchOne (base,other) nil = NOTFOUND other | |
15417 | | searchOne (base,other) (entry::entries) = | |
15418 | case entry | |
15419 | of E_BASE path => | |
15420 | let val newBase = uriJoin(base,path) | |
15421 | in searchOne (newBase,other) entries | |
15422 | end | |
15423 | | E_EXTEND path => | |
15424 | let val fullPath = uriJoin(base,path) | |
15425 | in searchOne (base,fullPath::other) entries | |
15426 | end | |
15427 | | E_DELEGATE(prefix,path) => | |
15428 | (case id | |
15429 | of PUB pid => if String.isPrefix prefix pid | |
15430 | then let val fullPath = uriJoin(base,path) | |
15431 | in searchOne (base,fullPath::other) entries | |
15432 | end | |
15433 | else searchOne (base,other) entries | |
15434 | | SYS _ => searchOne (base,other) entries) | |
15435 | | E_MAP(pubid,path) => | |
15436 | (case id | |
15437 | of PUB pid => if pubid=pid then FOUND (base,path) | |
15438 | else searchOne (base,other) entries | |
15439 | | _ => searchOne (base,other) entries) | |
15440 | | E_REMAP(sysid,path) => | |
15441 | (case id | |
15442 | of SYS sid => if sysid=sid then FOUND(base,path) | |
15443 | else searchOne (base,other) entries | |
15444 | | _ => searchOne (base,other) entries) | |
15445 | ||
15446 | fun searchLevel other nil = NOTFOUND(rev other) | |
15447 | | searchLevel other (fname::fnames) = | |
15448 | let | |
15449 | val (base,entries) = getCatalog fname | |
15450 | in | |
15451 | case searchOne (base,other) entries | |
15452 | of FOUND bp => FOUND bp | |
15453 | | NOTFOUND other' => searchLevel other' fnames | |
15454 | end | |
15455 | ||
15456 | fun searchAll fnames = | |
15457 | if null fnames then NONE | |
15458 | else case searchLevel nil fnames | |
15459 | of FOUND bp => SOME bp | |
15460 | | NOTFOUND other => searchAll other | |
15461 | ||
15462 | val fnames = !O_CATALOG_FILES | |
15463 | in | |
15464 | case id | |
15465 | of PUB _ => searchAll fnames | |
15466 | | SYS _ => if !O_SUPPORT_REMAP then searchAll fnames else NONE | |
15467 | end | |
15468 | ||
15469 | fun resolveExtId (pub,sys) = | |
15470 | let | |
15471 | fun resolvePubCat () = | |
15472 | case pub | |
15473 | of NONE => NONE | |
15474 | | SOME id => case searchId (PUB id) | |
15475 | of NONE => NONE | |
15476 | | SOME(base,sysid) => case searchId (SYS sysid) | |
15477 | of NONE => SOME(base,sysid) | |
15478 | | new => new | |
15479 | ||
15480 | fun resolveSysCat () = | |
15481 | case sys | |
15482 | of NONE => NONE | |
15483 | | SOME(base,id) => searchId (SYS id) | |
15484 | ||
15485 | fun resolveCat () = | |
15486 | if !O_PREFER_SYSID | |
15487 | then case resolveSysCat () | |
15488 | of NONE => resolvePubCat () | |
15489 | | found => found | |
15490 | else case resolvePubCat () | |
15491 | of NONE => resolveSysCat () | |
15492 | | found => found | |
15493 | ||
15494 | fun resolve () = | |
15495 | if !O_PREFER_CATALOG | |
15496 | then case resolveCat () | |
15497 | of NONE => (case sys | |
15498 | of NONE => NONE | |
15499 | | SOME(base,id) => SOME(base,id)) | |
15500 | | found => found | |
15501 | else case sys | |
15502 | of NONE => resolvePubCat () | |
15503 | | SOME(base,id) => SOME(base,id) | |
15504 | in | |
15505 | if null (!O_CATALOG_FILES) | |
15506 | then case sys | |
15507 | of NONE => NONE | |
15508 | | SOME(base,id) => SOME (uriJoin (base,id)) | |
15509 | else case resolve () | |
15510 | of NONE => NONE | |
15511 | | SOME bp => SOME (uriJoin bp) | |
15512 | end | |
15513 | end | |
15514 | (* stop of ../../Catalog/catalog.sml *) | |
15515 | (* start of ../../Catalog/catResolve.sml *) | |
15516 | ||
15517 | ||
15518 | ||
15519 | ||
15520 | ||
15521 | ||
15522 | ||
15523 | functor ResolveCatalog ( structure Params : CatParams ) : Resolve = | |
15524 | struct | |
15525 | structure Catalog = Catalog ( structure Params = Params ) | |
15526 | ||
15527 | open Base Errors | |
15528 | ||
15529 | fun resolveExtId (id as EXTID(pub,sys)) = | |
15530 | let val pub1 = case pub | |
15531 | of NONE => NONE | |
15532 | | SOME (str,_) => SOME str | |
15533 | val sys1 = case sys | |
15534 | of NONE => NONE | |
15535 | | SOME (base,file,_) => SOME(base,file) | |
15536 | in case Catalog.resolveExtId (pub1,sys1) | |
15537 | of NONE => raise NoSuchFile ("","Could not generate system identifier") | |
15538 | | SOME uri => uri | |
15539 | end | |
15540 | end | |
15541 | (* stop of ../../Catalog/catResolve.sml *) | |
15542 | (* start of ../../Catalog/catOptions.sml *) | |
15543 | signature CatOptions = | |
15544 | sig | |
15545 | val O_CATALOG_FILES : Uri.Uri list ref | |
15546 | val O_PREFER_SOCAT : bool ref | |
15547 | val O_PREFER_SYSID : bool ref | |
15548 | val O_PREFER_CATALOG : bool ref | |
15549 | val O_SUPPORT_REMAP : bool ref | |
15550 | val O_CATALOG_ENC : Encoding.Encoding ref | |
15551 | ||
15552 | val setCatalogDefaults : unit -> unit | |
15553 | val setCatalogOptions : Options.Option list * (string -> unit) -> Options.Option list | |
15554 | ||
15555 | val catalogUsage : Options.Usage | |
15556 | end | |
15557 | ||
15558 | functor CatOptions () : CatOptions = | |
15559 | struct | |
15560 | open Encoding Options Uri | |
15561 | ||
15562 | val O_CATALOG_FILES = ref nil: Uri list ref | |
15563 | val O_PREFER_SOCAT = ref false | |
15564 | val O_PREFER_SYSID = ref false | |
15565 | val O_PREFER_CATALOG = ref true | |
15566 | val O_SUPPORT_REMAP = ref true | |
15567 | val O_CATALOG_ENC = ref LATIN1 | |
15568 | ||
15569 | fun setCatalogDefaults() = | |
15570 | let | |
15571 | val _ = O_CATALOG_FILES := nil | |
15572 | val _ = O_PREFER_SOCAT := false | |
15573 | val _ = O_PREFER_SYSID := false | |
15574 | val _ = O_PREFER_CATALOG := true | |
15575 | val _ = O_SUPPORT_REMAP := true | |
15576 | val _ = O_CATALOG_ENC := LATIN1 | |
15577 | in () | |
15578 | end | |
15579 | ||
15580 | val catalogUsage = | |
15581 | [U_ITEM(["-C <url>","--catalog=<url>"],"Use catalog <url>"), | |
15582 | U_ITEM(["--catalog-syntax=(soc|xml)"],"Default syntax for catalogs (xml)"), | |
15583 | U_ITEM(["--catalog-encoding=<enc>"],"Default encoding for Socat catalogs (LATIN1)"), | |
15584 | U_ITEM(["--catalog-remap=[(yes|no)]"],"Support remapping of system identifiers (yes)"), | |
15585 | U_ITEM(["--catalog-priority=(map|remap|sys)"],"Resolving strategy in catalogs (map)") | |
15586 | ] | |
15587 | ||
15588 | fun setCatalogOptions (opts,doError) = | |
15589 | let | |
15590 | val catalogs = ref nil:string list ref | |
15591 | ||
15592 | fun hasNoArg key = "option "^key^" has no argument" | |
15593 | fun mustHave key = String.concat ["option ",key," must have an argument"] | |
15594 | fun mustBe(key,what) = String.concat ["the argument to --",key," must be ",what] | |
15595 | ||
15596 | val yesNo = "'yes' or 'no'" | |
15597 | val mapRemapSys = "'map', 'remap' or 'sys'" | |
15598 | val encName = "'ascii', 'latin1', 'utf8' or 'utf16'" | |
15599 | val syntaxName = "'soc' or 'xml'" | |
15600 | ||
15601 | fun do_catalog valOpt = | |
15602 | case valOpt | |
15603 | of NONE => doError(mustHave "--catalog") | |
15604 | | SOME s => catalogs := s::(!catalogs) | |
15605 | ||
15606 | fun do_prio valOpt = | |
15607 | let fun set(cat,sys) = (O_PREFER_CATALOG := cat; O_PREFER_SYSID := sys) | |
15608 | in case valOpt | |
15609 | of NONE => doError(mustHave "--catalog-priority") | |
15610 | | SOME "map" => set(true,false) | |
15611 | | SOME "remap" => set(true,true) | |
15612 | | SOME "sys" => set(false,true) | |
15613 | | SOME s => doError(mustBe("catalog-priority",mapRemapSys)) | |
15614 | end | |
15615 | ||
15616 | fun do_enc valOpt = | |
15617 | case valOpt | |
15618 | of NONE => doError(mustHave "--catalog-encoding") | |
15619 | | SOME s => case isEncoding s | |
15620 | of NOENC => doError("unsupported encoding "^s) | |
15621 | | enc => O_CATALOG_ENC := enc | |
15622 | ||
15623 | fun do_remap valOpt = | |
15624 | case valOpt | |
15625 | of NONE => doError(mustHave "--catalog-remap") | |
15626 | | SOME "no" => O_SUPPORT_REMAP := false | |
15627 | | SOME "yes" => O_SUPPORT_REMAP := true | |
15628 | | SOME s => doError(mustBe("catalog-remap",yesNo)) | |
15629 | ||
15630 | fun do_syntax valOpt = | |
15631 | case valOpt | |
15632 | of NONE => doError(mustHave "--catalog-syntax") | |
15633 | | SOME "soc" => O_PREFER_SOCAT := true | |
15634 | | SOME "xml" => O_PREFER_SOCAT := false | |
15635 | | SOME s => doError(mustBe("catalog-remap",syntaxName)) | |
15636 | ||
15637 | fun do_long(key,valOpt) = | |
15638 | case key | |
15639 | of "catalog" => true before do_catalog valOpt | |
15640 | | "catalog-remap" => true before do_remap valOpt | |
15641 | | "catalog-syntax" => true before do_syntax valOpt | |
15642 | | "catalog-encoding" => true before do_enc valOpt | |
15643 | | "catalog-priority" => true before do_prio valOpt | |
15644 | | _ => false | |
15645 | ||
15646 | fun do_short cs opts = | |
15647 | case cs | |
15648 | of nil => doit opts | |
15649 | | [#"C"] => | |
15650 | (case opts | |
15651 | of OPT_STRING s::opts1 => (catalogs := s::(!catalogs); | |
15652 | doit opts1) | |
15653 | | _ => let val _ = doError (mustHave "-C") | |
15654 | in doit opts | |
15655 | end) | |
15656 | | cs => | |
15657 | let val cs1 = List.filter | |
15658 | (fn c => if #"C"<>c then true | |
15659 | else false before doError (mustHave "-C")) cs | |
15660 | in if null cs1 then doit opts else (OPT_SHORT cs1)::doit opts | |
15661 | end | |
15662 | ||
15663 | and doit nil = nil | |
15664 | | doit (opt::opts) = | |
15665 | case opt | |
15666 | of OPT_NOOPT => opts | |
15667 | | OPT_LONG(key,value) => if do_long(key,value) then doit opts | |
15668 | else opt::doit opts | |
15669 | | OPT_SHORT cs => do_short cs opts | |
15670 | | OPT_NEG cs => opt::doit opts | |
15671 | | OPT_STRING s => opt::doit opts | |
15672 | ||
15673 | val opts1 = doit opts | |
15674 | val uris = map String2Uri (!catalogs) | |
15675 | val _ = O_CATALOG_FILES := uris | |
15676 | in opts1 | |
15677 | end | |
15678 | end | |
15679 | (* stop of ../../Catalog/catOptions.sml *) | |
15680 | (* start of nullOptions.sml *) | |
15681 | signature NullOptions = | |
15682 | sig | |
15683 | val O_SILENT : bool ref | |
15684 | val O_ERROR_DEVICE : TextIO.outstream ref | |
15685 | val O_ERROR_LINEWIDTH : int ref | |
15686 | ||
15687 | val setNullDefaults : unit -> unit | |
15688 | val setNullOptions : Options.Option list * (string -> unit) | |
15689 | -> bool * bool * string option * string option | |
15690 | ||
15691 | val nullUsage : Options.Usage | |
15692 | end | |
15693 | ||
15694 | structure NullOptions : NullOptions = | |
15695 | struct | |
15696 | open Options | |
15697 | ||
15698 | val O_SILENT = ref false | |
15699 | val O_ERROR_DEVICE = ref TextIO.stdErr | |
15700 | val O_ERROR_LINEWIDTH = ref 80 | |
15701 | ||
15702 | val nullUsage = | |
15703 | [U_ITEM(["-s","--silent"],"Suppress reporting of errors and warnings"), | |
15704 | U_ITEM(["-e <file>","--error-output=<file>"],"Redirect errors to file (stderr)"), | |
15705 | U_SEP, | |
15706 | U_ITEM(["--version"],"Print the version number and exit"), | |
15707 | U_ITEM(["-?","--help"],"Print this text and exit"), | |
15708 | U_ITEM(["--"],"Do not recognize remaining arguments as options") | |
15709 | ] | |
15710 | ||
15711 | fun setNullDefaults () = | |
15712 | let | |
15713 | val _ = O_SILENT := false | |
15714 | val _ = O_ERROR_DEVICE := TextIO.stdErr | |
15715 | in () | |
15716 | end | |
15717 | ||
15718 | fun setNullOptions (opts,optError) = | |
15719 | let | |
15720 | fun onlyOne what = "at most one "^what^" may be specified" | |
15721 | fun unknown pre opt = String.concat ["unknown option ",pre,opt] | |
15722 | fun hasNoArg pre key = String.concat ["option ",pre,key," expects no argument"] | |
15723 | fun mustHave pre key = String.concat ["option ",pre,key," must have an argument"] | |
15724 | ||
15725 | fun check_noarg(key,valOpt) = | |
15726 | if isSome valOpt then optError (hasNoArg "--" key) else () | |
15727 | ||
15728 | fun do_long (pars as (v,h,e,f)) (key,valOpt) = | |
15729 | case key | |
15730 | of "help" => (v,true,e,f) before check_noarg(key,valOpt) | |
15731 | | "version" => (true,h,e,f) before check_noarg(key,valOpt) | |
15732 | | "silent" => pars before O_SILENT := true before check_noarg(key,valOpt) | |
15733 | | "error-output" => | |
15734 | (case valOpt | |
15735 | of NONE => pars before optError (mustHave "--" key) | |
15736 | | SOME s => (v,h,SOME s,f)) | |
15737 | | _ => pars before optError(unknown "--" key) | |
15738 | ||
15739 | fun do_short (pars as (v,h,e,f)) (cs,opts) = | |
15740 | case cs | |
15741 | of nil => doit pars opts | |
15742 | | [#"e"] => (case opts | |
15743 | of OPT_STRING s::opts1 => doit (v,h,SOME s,f) opts1 | |
15744 | | _ => (optError (hasNoArg "-" "e"); doit pars opts)) | |
15745 | | cs => doit (foldr | |
15746 | (fn (c,pars) | |
15747 | => case c | |
15748 | of #"e" => pars before optError (hasNoArg "-" "e") | |
15749 | | #"s" => pars before O_SILENT := true | |
15750 | | #"?" => (v,true,e,f) | |
15751 | | c => pars before | |
15752 | optError (unknown "-" (String.implode [c]))) | |
15753 | pars cs) opts | |
15754 | ||
15755 | and doit pars nil = pars | |
15756 | | doit (pars as (v,h,e,f)) (opt::opts) = | |
15757 | case opt | |
15758 | of OPT_LONG(key,valOpt) => doit (do_long pars (key,valOpt)) opts | |
15759 | | OPT_SHORT cs => do_short pars (cs,opts) | |
15760 | | OPT_STRING s => if isSome f | |
15761 | then let val _ = optError(onlyOne "input file") | |
15762 | in doit pars opts | |
15763 | end | |
15764 | else doit (v,h,e,SOME s) opts | |
15765 | | OPT_NOOPT => doit pars opts | |
15766 | | OPT_NEG cs => let val _ = if null cs then () | |
15767 | else app (fn c => optError | |
15768 | (unknown "-n" (String.implode[c]))) cs | |
15769 | in doit pars opts | |
15770 | end | |
15771 | in doit (false,false,NONE,NONE) opts | |
15772 | end | |
15773 | end | |
15774 | (* stop of nullOptions.sml *) | |
15775 | (* start of nullHooks.sml *) | |
15776 | structure NullHooks = | |
15777 | struct | |
15778 | open Errors IgnoreHooks NullOptions | |
15779 | ||
15780 | type AppData = OS.Process.status | |
15781 | type AppFinal = AppData | |
15782 | val nullStart = OS.Process.success | |
15783 | ||
15784 | fun printError(pos,err) = if !O_SILENT then () else TextIO.output | |
15785 | (!O_ERROR_DEVICE,formatMessage (4,!O_ERROR_LINEWIDTH) | |
15786 | (Position2String pos | |
15787 | ::(if isFatalError err then "Fatal error:" else "Error:") | |
15788 | ::errorMessage err)) | |
15789 | fun printWarning(pos,warn) = if !O_SILENT then () else TextIO.output | |
15790 | (!O_ERROR_DEVICE,formatMessage (4,!O_ERROR_LINEWIDTH) | |
15791 | (Position2String pos^" Warning:"::warningMessage warn)) | |
15792 | ||
15793 | fun hookError (_,pe) = OS.Process.failure before printError pe | |
15794 | fun hookWarning (status,pw) = status before printWarning pw | |
15795 | end | |
15796 | (* stop of nullHooks.sml *) | |
15797 | (* start of null.sml *) | |
15798 | structure Null = | |
15799 | struct | |
15800 | structure ParserOptions = ParserOptions () | |
15801 | structure CatOptions = CatOptions () | |
15802 | structure CatParams = | |
15803 | struct | |
15804 | open CatError CatOptions NullOptions Uri UtilError | |
15805 | ||
15806 | fun catError(pos,err) = if !O_SILENT then () else TextIO.output | |
15807 | (!O_ERROR_DEVICE,formatMessage (4,!O_ERROR_LINEWIDTH) | |
15808 | (Position2String pos^" Error in catalog:"::catMessage err)) | |
15809 | end | |
15810 | structure Resolve = ResolveCatalog (structure Params = CatParams) | |
15811 | structure ParseNull = Parse (structure Dtd = Dtd | |
15812 | structure Hooks = NullHooks | |
15813 | structure Resolve = Resolve | |
15814 | structure ParserOptions = ParserOptions) | |
15815 | ||
15816 | fun parseNull uri = ParseNull.parseDocument uri NONE NullHooks.nullStart | |
15817 | ||
15818 | open | |
15819 | CatOptions NullOptions Options ParserOptions Uri | |
15820 | ||
15821 | val usage = List.concat [parserUsage,[U_SEP],catalogUsage,[U_SEP],nullUsage] | |
15822 | ||
15823 | exception Exit of OS.Process.status | |
15824 | ||
15825 | fun null(prog,args) = | |
15826 | let | |
15827 | val prog = "fxp" | |
15828 | val hadError = ref false | |
15829 | ||
15830 | fun optError msg = | |
15831 | let val _ = TextIO.output(TextIO.stdErr,msg^".\n") | |
15832 | in hadError := true | |
15833 | end | |
15834 | fun exitError msg = | |
15835 | let val _ = TextIO.output(TextIO.stdErr,msg^".\n") | |
15836 | in raise Exit OS.Process.failure | |
15837 | end | |
15838 | fun exitHelp prog = | |
15839 | let val _ = printUsage TextIO.stdOut prog usage | |
15840 | in raise Exit OS.Process.success | |
15841 | end | |
15842 | fun exitVersion prog = | |
15843 | let val _ = app print [prog," version ",Version.FXP_VERSION,"\n"] | |
15844 | in raise Exit OS.Process.success | |
15845 | end | |
15846 | ||
15847 | fun summOpt prog = "For a summary of options type "^prog^" --help" | |
15848 | fun noFile(f,cause) = "can't open file '"^f^"': "^exnMessage cause | |
15849 | ||
15850 | val opts = parseOptions args | |
15851 | val _ = setParserDefaults() | |
15852 | val opts1 = setParserOptions (opts,optError) | |
15853 | val _ = setCatalogDefaults() | |
15854 | val opts2 = setCatalogOptions (opts1,optError) | |
15855 | val _ = setNullDefaults() | |
15856 | val (vers,help,err,file) = setNullOptions (opts2,optError) | |
15857 | val _ = if !hadError then exitError (summOpt prog) else () | |
15858 | val _ = if vers then exitVersion prog else () | |
15859 | val _ = if help then exitHelp prog else () | |
15860 | val _ = case err | |
15861 | of SOME "-" => O_ERROR_DEVICE := TextIO.stdErr | |
15862 | | SOME f => (O_ERROR_DEVICE := TextIO.openOut f | |
15863 | handle IO.Io {cause,...} => exitError(noFile(f,cause))) | |
15864 | | NONE => () | |
15865 | val f = valOf file handle Option => "-" | |
15866 | val uri = if f="-" then NONE else SOME(String2Uri f) | |
15867 | val status = parseNull uri | |
15868 | val _ = if isSome err then TextIO.closeOut (!O_ERROR_DEVICE) else () | |
15869 | in status | |
15870 | end | |
15871 | handle Exit status => status | |
15872 | | exn => | |
15873 | let val _ = TextIO.output | |
15874 | (TextIO.stdErr,prog^": Unexpected exception: "^exnMessage exn^".\n") | |
15875 | in OS.Process.failure | |
15876 | end | |
15877 | end | |
15878 | ||
15879 | (* stop of null.sml *) | |
15880 | (* start of call-null.sml *) | |
15881 | val _ = Null.null (CommandLine.name (), CommandLine.arguments ()) | |
15882 | (* stop of call-null.sml *) |