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f537ebc4 | 1 | (* |
17ba0788 C |
2 | * Copyright 2012, INRIA |
3 | * Julia Lawall, Gilles Muller | |
4 | * Copyright 2010-2011, INRIA, University of Copenhagen | |
f537ebc4 C |
5 | * Julia Lawall, Rene Rydhof Hansen, Gilles Muller, Nicolas Palix |
6 | * Copyright 2005-2009, Ecole des Mines de Nantes, University of Copenhagen | |
7 | * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller, Nicolas Palix | |
8 | * This file is part of Coccinelle. | |
9 | * | |
10 | * Coccinelle is free software: you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation, according to version 2 of the License. | |
13 | * | |
14 | * Coccinelle is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with Coccinelle. If not, see <http://www.gnu.org/licenses/>. | |
21 | * | |
22 | * The authors reserve the right to distribute this or future versions of | |
23 | * Coccinelle under other licenses. | |
24 | *) | |
25 | ||
26 | ||
34e49164 C |
27 | { |
28 | open Parser_cocci_menhir | |
29 | module D = Data | |
30 | module Ast = Ast_cocci | |
31 | module Ast0 = Ast0_cocci | |
32 | module P = Parse_aux | |
33 | exception Lexical of string | |
34 | let tok = Lexing.lexeme | |
35 | ||
36 | let line = ref 1 | |
37 | let logical_line = ref 0 | |
38 | ||
39 | (* ---------------------------------------------------------------------- *) | |
40 | (* control codes *) | |
41 | ||
42 | (* Defined in data.ml | |
43 | type line_type = MINUS | OPTMINUS | UNIQUEMINUS | PLUS | CONTEXT | UNIQUE | OPT | |
44 | *) | |
45 | ||
46 | let current_line_type = ref (D.CONTEXT,!line,!logical_line) | |
47 | ||
48 | let prev_plus = ref false | |
49 | let line_start = ref 0 (* offset of the beginning of the line *) | |
50 | let get_current_line_type lexbuf = | |
51 | let (c,l,ll) = !current_line_type in | |
52 | let lex_start = Lexing.lexeme_start lexbuf in | |
53 | let preceeding_spaces = | |
54 | if !line_start < 0 then 0 else lex_start - !line_start in | |
708f4980 | 55 | (*line_start := -1;*) |
951c7801 | 56 | prev_plus := (c = D.PLUS) or (c = D.PLUSPLUS); |
8f657093 | 57 | (c,l,ll,lex_start,preceeding_spaces,[],[],[]) |
34e49164 C |
58 | let current_line_started = ref false |
59 | let col_zero = ref true | |
60 | ||
97111a47 C |
61 | let contextify (c,l,ll,lex_start,preceeding_spaces,bef,aft,pos) = |
62 | (D.CONTEXT,l,ll,lex_start,preceeding_spaces,bef,aft,pos) | |
63 | ||
34e49164 C |
64 | let reset_line lexbuf = |
65 | line := !line + 1; | |
66 | current_line_type := (D.CONTEXT,!line,!logical_line); | |
67 | current_line_started := false; | |
68 | col_zero := true; | |
69 | line_start := Lexing.lexeme_start lexbuf + 1 | |
70 | ||
71 | let started_line = ref (-1) | |
72 | ||
73 | let start_line seen_char = | |
74 | current_line_started := true; | |
75 | col_zero := false; | |
76 | (if seen_char && not(!line = !started_line) | |
77 | then | |
78 | begin | |
79 | started_line := !line; | |
80 | logical_line := !logical_line + 1 | |
81 | end) | |
82 | ||
83 | let pass_zero _ = col_zero := false | |
84 | ||
85 | let lexerr s1 s2 = raise (Lexical (Printf.sprintf "%s%s" s1 s2)) | |
86 | ||
87 | let add_current_line_type x = | |
88 | match (x,!current_line_type) with | |
89 | (D.MINUS,(D.CONTEXT,ln,lln)) -> | |
90 | current_line_type := (D.MINUS,ln,lln) | |
91 | | (D.MINUS,(D.UNIQUE,ln,lln)) -> | |
92 | current_line_type := (D.UNIQUEMINUS,ln,lln) | |
93 | | (D.MINUS,(D.OPT,ln,lln)) -> | |
94 | current_line_type := (D.OPTMINUS,ln,lln) | |
95 | | (D.PLUS,(D.CONTEXT,ln,lln)) -> | |
96 | current_line_type := (D.PLUS,ln,lln) | |
951c7801 C |
97 | | (D.PLUSPLUS,(D.CONTEXT,ln,lln)) -> |
98 | current_line_type := (D.PLUSPLUS,ln,lln) | |
34e49164 C |
99 | | (D.UNIQUE,(D.CONTEXT,ln,lln)) -> |
100 | current_line_type := (D.UNIQUE,ln,lln) | |
101 | | (D.OPT,(D.CONTEXT,ln,lln)) -> | |
102 | current_line_type := (D.OPT,ln,lln) | |
103 | | _ -> lexerr "invalid control character combination" "" | |
104 | ||
105 | let check_minus_context_linetype s = | |
106 | match !current_line_type with | |
951c7801 | 107 | (D.PLUS,_,_) | (D.PLUSPLUS,_,_) -> lexerr "invalid in a + context: " s |
34e49164 C |
108 | | _ -> () |
109 | ||
110 | let check_context_linetype s = | |
111 | match !current_line_type with | |
112 | (D.CONTEXT,_,_) -> () | |
113 | | _ -> lexerr "invalid in a nonempty context: " s | |
114 | ||
115 | let check_plus_linetype s = | |
116 | match !current_line_type with | |
951c7801 | 117 | (D.PLUS,_,_) | (D.PLUSPLUS,_,_) -> () |
34e49164 C |
118 | | _ -> lexerr "invalid in a non + context: " s |
119 | ||
120 | let check_arity_context_linetype s = | |
121 | match !current_line_type with | |
951c7801 C |
122 | (D.CONTEXT,_,_) | (D.PLUS,_,_) | (D.PLUSPLUS,_,_) |
123 | | (D.UNIQUE,_,_) | (D.OPT,_,_) -> () | |
34e49164 C |
124 | | _ -> lexerr "invalid in a nonempty context: " s |
125 | ||
aa721442 C |
126 | let check_comment s = |
127 | if not !current_line_started | |
128 | then lexerr "+ expected at the beginning of the line" s | |
129 | ||
34e49164 C |
130 | let process_include start finish str = |
131 | (match !current_line_type with | |
951c7801 | 132 | (D.PLUS,_,_) | (D.PLUSPLUS,_,_) -> |
34e49164 C |
133 | (try |
134 | let _ = Str.search_forward (Str.regexp "\\.\\.\\.") str start in | |
135 | lexerr "... not allowed in + include" "" | |
136 | with Not_found -> ()) | |
137 | | _ -> ()); | |
138 | String.sub str (start + 1) (finish - start - 1) | |
139 | ||
140 | (* ---------------------------------------------------------------------- *) | |
141 | type pm = PATCH | MATCH | UNKNOWN | |
142 | ||
143 | let pm = ref UNKNOWN | |
144 | ||
145 | let patch_or_match = function | |
146 | PATCH -> | |
7f004419 C |
147 | if not !D.ignore_patch_or_match |
148 | then | |
149 | (match !pm with | |
150 | MATCH -> | |
151 | lexerr "- or + not allowed in the first column for a match" "" | |
152 | | PATCH -> () | |
153 | | UNKNOWN -> Flag.sgrep_mode2 := false; pm := PATCH) | |
34e49164 | 154 | | MATCH -> |
7f004419 C |
155 | if not !D.ignore_patch_or_match |
156 | then | |
157 | (match !pm with | |
158 | PATCH -> lexerr "* not allowed in the first column for a patch" "" | |
159 | | MATCH -> () | |
160 | | UNKNOWN -> Flag.sgrep_mode2 := true; pm := MATCH) | |
34e49164 C |
161 | | _ -> failwith "unexpected argument" |
162 | ||
163 | (* ---------------------------------------------------------------------- *) | |
164 | (* identifiers, including metavariables *) | |
165 | ||
166 | let metavariables = (Hashtbl.create(100) : (string, D.clt -> token) Hashtbl.t) | |
167 | ||
168 | let all_metavariables = | |
169 | (Hashtbl.create(100) : (string,(string * (D.clt -> token)) list) Hashtbl.t) | |
170 | ||
171 | let type_names = (Hashtbl.create(100) : (string, D.clt -> token) Hashtbl.t) | |
172 | ||
173 | let declarer_names = (Hashtbl.create(100) : (string, D.clt -> token) Hashtbl.t) | |
174 | ||
175 | let iterator_names = (Hashtbl.create(100) : (string, D.clt -> token) Hashtbl.t) | |
176 | ||
97111a47 C |
177 | let symbol_names = (Hashtbl.create(15) : (string, D.clt -> token) Hashtbl.t) |
178 | ||
34e49164 C |
179 | let rule_names = (Hashtbl.create(100) : (string, unit) Hashtbl.t) |
180 | ||
181 | let check_var s linetype = | |
182 | let fail _ = | |
183 | if (!Data.in_prolog || !Data.in_rule_name) && | |
184 | Str.string_match (Str.regexp "<.*>") s 0 | |
185 | then TPathIsoFile s | |
186 | else | |
187 | try (Hashtbl.find metavariables s) linetype | |
188 | with Not_found -> | |
189 | (try (Hashtbl.find type_names s) linetype | |
190 | with Not_found -> | |
191 | (try (Hashtbl.find declarer_names s) linetype | |
faf9a90c | 192 | with Not_found -> |
34e49164 | 193 | (try (Hashtbl.find iterator_names s) linetype |
97111a47 C |
194 | with Not_found -> |
195 | (try (Hashtbl.find symbol_names s) linetype | |
196 | with Not_found -> | |
197 | TIdent (s,linetype))))) in | |
34e49164 C |
198 | if !Data.in_meta or !Data.in_rule_name |
199 | then (try Hashtbl.find rule_names s; TRuleName s with Not_found -> fail()) | |
200 | else fail() | |
201 | ||
202 | let id_tokens lexbuf = | |
203 | let s = tok lexbuf in | |
204 | let linetype = get_current_line_type lexbuf in | |
205 | let in_rule_name = !Data.in_rule_name in | |
978fd7e5 | 206 | let in_meta = !Data.in_meta && not !Data.saw_struct in |
34e49164 C |
207 | let in_iso = !Data.in_iso in |
208 | let in_prolog = !Data.in_prolog in | |
209 | match s with | |
b23ff9c7 C |
210 | "metavariable" when in_meta -> check_arity_context_linetype s; TMetavariable |
211 | | "identifier" when in_meta -> check_arity_context_linetype s; TIdentifier | |
34e49164 C |
212 | | "type" when in_meta -> check_arity_context_linetype s; TType |
213 | | "parameter" when in_meta -> check_arity_context_linetype s; TParameter | |
214 | | "constant" when in_meta -> check_arity_context_linetype s; TConstant | |
faf9a90c C |
215 | | "generated" when in_rule_name && not (!Flag.make_hrule = None) -> |
216 | check_arity_context_linetype s; TGenerated | |
34e49164 C |
217 | | "expression" when in_meta || in_rule_name -> |
218 | check_arity_context_linetype s; TExpression | |
413ffc02 C |
219 | | "declaration" when in_meta || in_rule_name -> |
220 | check_arity_context_linetype s; TDeclaration | |
221 | | "field" when in_meta || in_rule_name -> | |
222 | check_arity_context_linetype s; TField | |
113803cf C |
223 | | "initialiser" when in_meta || in_rule_name -> |
224 | check_arity_context_linetype s; TInitialiser | |
225 | | "initializer" when in_meta || in_rule_name -> | |
226 | check_arity_context_linetype s; TInitialiser | |
34e49164 C |
227 | | "idexpression" when in_meta -> |
228 | check_arity_context_linetype s; TIdExpression | |
229 | | "statement" when in_meta -> check_arity_context_linetype s; TStatement | |
230 | | "function" when in_meta -> check_arity_context_linetype s; TFunction | |
231 | | "local" when in_meta -> check_arity_context_linetype s; TLocal | |
232 | | "list" when in_meta -> check_arity_context_linetype s; Tlist | |
233 | | "fresh" when in_meta -> check_arity_context_linetype s; TFresh | |
234 | | "typedef" when in_meta -> check_arity_context_linetype s; TTypedef | |
235 | | "declarer" when in_meta -> check_arity_context_linetype s; TDeclarer | |
236 | | "iterator" when in_meta -> check_arity_context_linetype s; TIterator | |
237 | | "name" when in_meta -> check_arity_context_linetype s; TName | |
238 | | "position" when in_meta -> check_arity_context_linetype s; TPosition | |
239 | | "any" when in_meta -> check_arity_context_linetype s; TPosAny | |
240 | | "pure" when in_meta && in_iso -> | |
241 | check_arity_context_linetype s; TPure | |
242 | | "context" when in_meta && in_iso -> | |
243 | check_arity_context_linetype s; TContext | |
244 | | "error" when in_meta -> check_arity_context_linetype s; TError | |
245 | | "words" when in_meta -> check_context_linetype s; TWords | |
97111a47 | 246 | | "symbol" when in_meta -> check_arity_context_linetype s; TSymbol |
34e49164 C |
247 | |
248 | | "using" when in_rule_name || in_prolog -> check_context_linetype s; TUsing | |
ae4735db C |
249 | | "virtual" when in_prolog or in_rule_name or in_meta -> |
250 | (* don't want to allow virtual as a rule name *) | |
251 | check_context_linetype s; TVirtual | |
34e49164 C |
252 | | "disable" when in_rule_name -> check_context_linetype s; TDisable |
253 | | "extends" when in_rule_name -> check_context_linetype s; TExtends | |
254 | | "depends" when in_rule_name -> check_context_linetype s; TDepends | |
255 | | "on" when in_rule_name -> check_context_linetype s; TOn | |
256 | | "ever" when in_rule_name -> check_context_linetype s; TEver | |
257 | | "never" when in_rule_name -> check_context_linetype s; TNever | |
978fd7e5 | 258 | (* exists and forall for when are reparsed in parse_cocci.ml *) |
34e49164 C |
259 | | "exists" when in_rule_name -> check_context_linetype s; TExists |
260 | | "forall" when in_rule_name -> check_context_linetype s; TForall | |
b1b2de81 C |
261 | | "script" when in_rule_name -> check_context_linetype s; TScript |
262 | | "initialize" when in_rule_name -> check_context_linetype s; TInitialize | |
263 | | "finalize" when in_rule_name -> check_context_linetype s; TFinalize | |
34e49164 C |
264 | |
265 | | "char" -> Tchar linetype | |
266 | | "short" -> Tshort linetype | |
267 | | "int" -> Tint linetype | |
268 | | "double" -> Tdouble linetype | |
269 | | "float" -> Tfloat linetype | |
270 | | "long" -> Tlong linetype | |
271 | | "void" -> Tvoid linetype | |
1eddfd50 C |
272 | | "size_t" -> Tsize_t linetype |
273 | | "ssize_t" -> Tssize_t linetype | |
274 | | "ptrdiff_t" -> Tptrdiff_t linetype | |
978fd7e5 C |
275 | (* in_meta is only for the first keyword; drop it now to allow any type |
276 | name *) | |
277 | | "struct" -> Data.saw_struct := true; Tstruct linetype | |
278 | | "union" -> Data.saw_struct := true; Tunion linetype | |
279 | | "enum" -> Data.saw_struct := true; Tenum linetype | |
34e49164 C |
280 | | "unsigned" -> Tunsigned linetype |
281 | | "signed" -> Tsigned linetype | |
faf9a90c | 282 | |
34e49164 C |
283 | | "auto" -> Tauto linetype |
284 | | "register" -> Tregister linetype | |
285 | | "extern" -> Textern linetype | |
286 | | "static" -> Tstatic linetype | |
287 | | "inline" -> Tinline linetype | |
288 | | "typedef" -> Ttypedef linetype | |
289 | ||
290 | | "const" -> Tconst linetype | |
291 | | "volatile" -> Tvolatile linetype | |
292 | ||
293 | | "if" -> TIf linetype | |
294 | | "else" -> TElse linetype | |
295 | | "while" -> TWhile linetype | |
296 | | "do" -> TDo linetype | |
297 | | "for" -> TFor linetype | |
298 | | "switch" -> TSwitch linetype | |
299 | | "case" -> TCase linetype | |
300 | | "default" -> TDefault linetype | |
301 | | "return" -> TReturn linetype | |
302 | | "break" -> TBreak linetype | |
303 | | "continue" -> TContinue linetype | |
304 | | "goto" -> TGoto linetype | |
305 | ||
306 | | "sizeof" -> TSizeof linetype | |
307 | ||
aba5c457 C |
308 | | "Expression" when !Data.in_iso -> TIsoExpression |
309 | | "ArgExpression" when !Data.in_iso -> TIsoArgExpression | |
310 | | "TestExpression" when !Data.in_iso -> TIsoTestExpression | |
311 | | "ToTestExpression" when !Data.in_iso -> TIsoToTestExpression | |
312 | | "Statement" when !Data.in_iso -> TIsoStatement | |
313 | | "Declaration" when !Data.in_iso -> TIsoDeclaration | |
314 | | "Type" when !Data.in_iso -> TIsoType | |
315 | | "TopLevel" when !Data.in_iso -> TIsoTopLevel | |
316 | ||
317 | | "_" when !Data.in_meta -> TUnderscore | |
34e49164 C |
318 | |
319 | | s -> check_var s linetype | |
320 | ||
321 | let mkassign op lexbuf = | |
322 | TAssign (Ast.OpAssign op, (get_current_line_type lexbuf)) | |
323 | ||
324 | let init _ = | |
325 | line := 1; | |
326 | logical_line := 0; | |
327 | prev_plus := false; | |
328 | line_start := 0; | |
329 | current_line_started := false; | |
c3e37e97 | 330 | current_line_type := (D.CONTEXT,0,0); |
34e49164 C |
331 | col_zero := true; |
332 | pm := UNKNOWN; | |
333 | Data.in_rule_name := false; | |
334 | Data.in_meta := false; | |
335 | Data.in_prolog := false; | |
978fd7e5 | 336 | Data.saw_struct := false; |
34e49164 C |
337 | Data.inheritable_positions := []; |
338 | Hashtbl.clear all_metavariables; | |
339 | Hashtbl.clear Data.all_metadecls; | |
340 | Hashtbl.clear metavariables; | |
341 | Hashtbl.clear type_names; | |
342 | Hashtbl.clear rule_names; | |
708f4980 C |
343 | Hashtbl.clear iterator_names; |
344 | Hashtbl.clear declarer_names; | |
97111a47 | 345 | Hashtbl.clear symbol_names; |
34e49164 | 346 | let get_name (_,x) = x in |
b23ff9c7 C |
347 | Data.add_meta_meta := |
348 | (fun name pure -> | |
349 | let fn clt = TMeta(name,pure,clt) in | |
350 | Hashtbl.replace metavariables (get_name name) fn); | |
34e49164 C |
351 | Data.add_id_meta := |
352 | (fun name constraints pure -> | |
8babbc8f | 353 | let fn clt = TMetaId(name,constraints,Ast.NoVal,pure,clt) in |
34e49164 | 354 | Hashtbl.replace metavariables (get_name name) fn); |
ae4735db C |
355 | Data.add_virt_id_meta_found := |
356 | (fun name vl -> | |
357 | let fn clt = TIdent(vl,clt) in | |
358 | Hashtbl.replace metavariables name fn); | |
359 | Data.add_virt_id_meta_not_found := | |
360 | (fun name pure -> | |
8babbc8f | 361 | let fn clt = TMetaId(name,Ast.IdNoConstraint,Ast.NoVal,pure,clt) in |
ae4735db | 362 | Hashtbl.replace metavariables (get_name name) fn); |
b1b2de81 | 363 | Data.add_fresh_id_meta := |
8babbc8f C |
364 | (fun name seed -> |
365 | let fn clt = TMetaId(name,Ast.IdNoConstraint,seed,Ast0.Impure,clt) in | |
b1b2de81 | 366 | Hashtbl.replace metavariables (get_name name) fn); |
34e49164 C |
367 | Data.add_type_meta := |
368 | (fun name pure -> | |
369 | let fn clt = TMetaType(name,pure,clt) in | |
370 | Hashtbl.replace metavariables (get_name name) fn); | |
113803cf C |
371 | Data.add_init_meta := |
372 | (fun name pure -> | |
373 | let fn clt = TMetaInit(name,pure,clt) in | |
374 | Hashtbl.replace metavariables (get_name name) fn); | |
8f657093 C |
375 | Data.add_initlist_meta := |
376 | (function name -> function lenname -> function pure -> | |
377 | let fn clt = TMetaInitList(name,lenname,pure,clt) in | |
378 | Hashtbl.replace metavariables (get_name name) fn); | |
34e49164 C |
379 | Data.add_param_meta := |
380 | (function name -> function pure -> | |
381 | let fn clt = TMetaParam(name,pure,clt) in | |
382 | Hashtbl.replace metavariables (get_name name) fn); | |
383 | Data.add_paramlist_meta := | |
384 | (function name -> function lenname -> function pure -> | |
385 | let fn clt = TMetaParamList(name,lenname,pure,clt) in | |
386 | Hashtbl.replace metavariables (get_name name) fn); | |
387 | Data.add_const_meta := | |
388 | (fun tyopt name constraints pure -> | |
389 | let fn clt = TMetaConst(name,constraints,pure,tyopt,clt) in | |
390 | Hashtbl.replace metavariables (get_name name) fn); | |
391 | Data.add_err_meta := | |
392 | (fun name constraints pure -> | |
393 | let fn clt = TMetaErr(name,constraints,pure,clt) in | |
394 | Hashtbl.replace metavariables (get_name name) fn); | |
395 | Data.add_exp_meta := | |
396 | (fun tyopt name constraints pure -> | |
397 | let fn clt = TMetaExp(name,constraints,pure,tyopt,clt) in | |
398 | Hashtbl.replace metavariables (get_name name) fn); | |
399 | Data.add_idexp_meta := | |
400 | (fun tyopt name constraints pure -> | |
401 | let fn clt = TMetaIdExp(name,constraints,pure,tyopt,clt) in | |
402 | Hashtbl.replace metavariables (get_name name) fn); | |
403 | Data.add_local_idexp_meta := | |
404 | (fun tyopt name constraints pure -> | |
405 | let fn clt = TMetaLocalIdExp(name,constraints,pure,tyopt,clt) in | |
406 | Hashtbl.replace metavariables (get_name name) fn); | |
407 | Data.add_explist_meta := | |
408 | (function name -> function lenname -> function pure -> | |
409 | let fn clt = TMetaExpList(name,lenname,pure,clt) in | |
410 | Hashtbl.replace metavariables (get_name name) fn); | |
413ffc02 C |
411 | Data.add_decl_meta := |
412 | (function name -> function pure -> | |
413 | let fn clt = TMetaDecl(name,pure,clt) in | |
414 | Hashtbl.replace metavariables (get_name name) fn); | |
415 | Data.add_field_meta := | |
416 | (function name -> function pure -> | |
417 | let fn clt = TMetaField(name,pure,clt) in | |
418 | Hashtbl.replace metavariables (get_name name) fn); | |
190f1acf C |
419 | Data.add_field_list_meta := |
420 | (function name -> function lenname -> function pure -> | |
421 | let fn clt = TMetaFieldList(name,lenname,pure,clt) in | |
422 | Hashtbl.replace metavariables (get_name name) fn); | |
34e49164 C |
423 | Data.add_stm_meta := |
424 | (function name -> function pure -> | |
425 | let fn clt = TMetaStm(name,pure,clt) in | |
426 | Hashtbl.replace metavariables (get_name name) fn); | |
427 | Data.add_stmlist_meta := | |
428 | (function name -> function pure -> | |
429 | let fn clt = TMetaStmList(name,pure,clt) in | |
430 | Hashtbl.replace metavariables (get_name name) fn); | |
431 | Data.add_func_meta := | |
432 | (fun name constraints pure -> | |
433 | let fn clt = TMetaFunc(name,constraints,pure,clt) in | |
434 | Hashtbl.replace metavariables (get_name name) fn); | |
435 | Data.add_local_func_meta := | |
436 | (fun name constraints pure -> | |
437 | let fn clt = TMetaLocalFunc(name,constraints,pure,clt) in | |
438 | Hashtbl.replace metavariables (get_name name) fn); | |
439 | Data.add_iterator_meta := | |
440 | (fun name constraints pure -> | |
441 | let fn clt = TMetaIterator(name,constraints,pure,clt) in | |
442 | Hashtbl.replace metavariables (get_name name) fn); | |
443 | Data.add_declarer_meta := | |
444 | (fun name constraints pure -> | |
445 | let fn clt = TMetaDeclarer(name,constraints,pure,clt) in | |
446 | Hashtbl.replace metavariables (get_name name) fn); | |
447 | Data.add_pos_meta := | |
448 | (fun name constraints any -> | |
449 | let fn ((d,ln,_,_,_,_,_,_) as clt) = | |
450 | (if d = Data.PLUS | |
451 | then | |
452 | failwith | |
453 | (Printf.sprintf "%d: positions only allowed in minus code" ln)); | |
454 | TMetaPos(name,constraints,any,clt) in | |
455 | Hashtbl.replace metavariables (get_name name) fn); | |
456 | Data.add_type_name := | |
457 | (function name -> | |
458 | let fn clt = TTypeId(name,clt) in | |
459 | Hashtbl.replace type_names name fn); | |
460 | Data.add_declarer_name := | |
461 | (function name -> | |
462 | let fn clt = TDeclarerId(name,clt) in | |
463 | Hashtbl.replace declarer_names name fn); | |
464 | Data.add_iterator_name := | |
465 | (function name -> | |
466 | let fn clt = TIteratorId(name,clt) in | |
467 | Hashtbl.replace iterator_names name fn); | |
97111a47 C |
468 | Data.add_symbol_meta := |
469 | (function name -> | |
470 | let fn clt = TSymId (name,clt) in | |
471 | Hashtbl.replace symbol_names name fn); | |
34e49164 C |
472 | Data.init_rule := (function _ -> Hashtbl.clear metavariables); |
473 | Data.install_bindings := | |
474 | (function parent -> | |
475 | List.iter (function (name,fn) -> Hashtbl.add metavariables name fn) | |
476 | (Hashtbl.find all_metavariables parent)) | |
477 | ||
5636bb2c C |
478 | (* the following is needed to properly tokenize include files. Because an |
479 | include file is included after seeing a @, so current_line_started is true. | |
480 | Current_line_started is not important for parsing the name of a rule, so we | |
481 | don't have to reset this value to true after parsing an included file. *) | |
482 | let include_init _ = | |
483 | current_line_started := false | |
484 | ||
34e49164 C |
485 | let drop_spaces s = |
486 | let len = String.length s in | |
487 | let rec loop n = | |
488 | if n = len | |
489 | then n | |
490 | else | |
491 | if List.mem (String.get s n) [' ';'\t'] | |
492 | then loop (n+1) | |
493 | else n in | |
494 | let start = loop 0 in | |
495 | String.sub s start (len - start) | |
496 | } | |
497 | ||
498 | (* ---------------------------------------------------------------------- *) | |
499 | (* tokens *) | |
500 | ||
501 | let letter = ['A'-'Z' 'a'-'z' '_'] | |
502 | let digit = ['0'-'9'] | |
503 | ||
504 | let dec = ['0'-'9'] | |
505 | let oct = ['0'-'7'] | |
506 | let hex = ['0'-'9' 'a'-'f' 'A'-'F'] | |
507 | ||
508 | let decimal = ('0' | (['1'-'9'] dec*)) | |
509 | let octal = ['0'] oct+ | |
faf9a90c | 510 | let hexa = ("0x" |"0X") hex+ |
34e49164 C |
511 | |
512 | let pent = dec+ | |
513 | let pfract = dec+ | |
514 | let sign = ['-' '+'] | |
515 | let exp = ['e''E'] sign? dec+ | |
516 | let real = pent exp | ((pent? '.' pfract | pent '.' pfract? ) exp?) | |
517 | ||
518 | ||
519 | rule token = parse | |
c3e37e97 C |
520 | | [' ' '\t']* ['\n' '\r' '\011' '\012'] |
521 | { let cls = !current_line_started in | |
97111a47 | 522 | |
c3e37e97 C |
523 | if not cls |
524 | then | |
525 | begin | |
526 | match !current_line_type with | |
527 | (D.PLUS,_,_) | (D.PLUSPLUS,_,_) -> | |
528 | let info = get_current_line_type lexbuf in | |
529 | reset_line lexbuf; | |
530 | TPragma (Ast.Noindent "", info) | |
531 | | _ -> reset_line lexbuf; token lexbuf | |
532 | end | |
533 | else (reset_line lexbuf; token lexbuf) } | |
534 | ||
535 | | [' ' '\t' ]+ { start_line false; token lexbuf } | |
536 | ||
8f657093 | 537 | | [' ' '\t' ]* (("//" [^ '\n']*) as after) { |
c3e37e97 C |
538 | match !current_line_type with |
539 | (D.PLUS,_,_) | (D.PLUSPLUS,_,_) -> | |
8f657093 C |
540 | let str = |
541 | if !current_line_started | |
542 | then (tok lexbuf) | |
543 | else after in | |
190f1acf | 544 | start_line true; |
8f657093 | 545 | TPragma (Ast.Indent str, get_current_line_type lexbuf) |
c3e37e97 | 546 | | _ -> start_line false; token lexbuf } |
34e49164 | 547 | |
190f1acf C |
548 | | "__attribute__" [' ' '\t']* "((" _* "))" |
549 | { match !current_line_type with | |
550 | (D.PLUS,_,_) | (D.PLUSPLUS,_,_) -> | |
551 | start_line true; | |
552 | TPragma (Ast.Space (tok lexbuf), get_current_line_type lexbuf) | |
553 | | _ -> failwith "attributes only allowedin + code" } | |
554 | ||
34e49164 C |
555 | | "@@" { start_line true; TArobArob } |
556 | | "@" { pass_zero(); | |
557 | if !Data.in_rule_name or not !current_line_started | |
558 | then (start_line true; TArob) | |
17ba0788 C |
559 | else (check_minus_context_linetype "@"; |
560 | TPArob (get_current_line_type lexbuf)) } | |
34e49164 | 561 | |
f3c4ece6 | 562 | | "=~" { start_line true; TTildeEq (get_current_line_type lexbuf) } |
7fe62b65 | 563 | | "!~" { start_line true; TTildeExclEq (get_current_line_type lexbuf) } |
34e49164 C |
564 | | "WHEN" | "when" |
565 | { start_line true; check_minus_context_linetype (tok lexbuf); | |
566 | TWhen (get_current_line_type lexbuf) } | |
567 | ||
568 | | "..." | |
569 | { start_line true; check_minus_context_linetype (tok lexbuf); | |
570 | TEllipsis (get_current_line_type lexbuf) } | |
571 | (* | |
572 | | "ooo" | |
573 | { start_line true; check_minus_context_linetype (tok lexbuf); | |
574 | TCircles (get_current_line_type lexbuf) } | |
575 | ||
576 | | "***" | |
577 | { start_line true; check_minus_context_linetype (tok lexbuf); | |
578 | TStars (get_current_line_type lexbuf) } | |
579 | *) | |
580 | | "<..." { start_line true; check_context_linetype (tok lexbuf); | |
581 | TOEllipsis (get_current_line_type lexbuf) } | |
582 | | "...>" { start_line true; check_context_linetype (tok lexbuf); | |
583 | TCEllipsis (get_current_line_type lexbuf) } | |
5636bb2c | 584 | | "<+..." { start_line true; check_minus_context_linetype (tok lexbuf); |
34e49164 | 585 | TPOEllipsis (get_current_line_type lexbuf) } |
5636bb2c | 586 | | "...+>" { start_line true; check_minus_context_linetype (tok lexbuf); |
34e49164 C |
587 | TPCEllipsis (get_current_line_type lexbuf) } |
588 | (* | |
589 | | "<ooo" { start_line true; check_context_linetype (tok lexbuf); | |
590 | TOCircles (get_current_line_type lexbuf) } | |
591 | | "ooo>" { start_line true; check_context_linetype (tok lexbuf); | |
592 | TCCircles (get_current_line_type lexbuf) } | |
593 | ||
594 | | "<***" { start_line true; check_context_linetype (tok lexbuf); | |
595 | TOStars (get_current_line_type lexbuf) } | |
596 | | "***>" { start_line true; check_context_linetype (tok lexbuf); | |
597 | TCStars (get_current_line_type lexbuf) } | |
598 | *) | |
599 | | "-" { pass_zero(); | |
600 | if !current_line_started | |
601 | then (start_line true; TMinus (get_current_line_type lexbuf)) | |
602 | else (patch_or_match PATCH; | |
603 | add_current_line_type D.MINUS; token lexbuf) } | |
604 | | "+" { pass_zero(); | |
605 | if !current_line_started | |
606 | then (start_line true; TPlus (get_current_line_type lexbuf)) | |
607 | else if !Data.in_meta | |
608 | then TPlus0 | |
609 | else (patch_or_match PATCH; | |
610 | add_current_line_type D.PLUS; token lexbuf) } | |
611 | | "?" { pass_zero(); | |
612 | if !current_line_started | |
613 | then (start_line true; TWhy (get_current_line_type lexbuf)) | |
614 | else if !Data.in_meta | |
615 | then TWhy0 | |
616 | else (add_current_line_type D.OPT; token lexbuf) } | |
617 | | "!" { pass_zero(); | |
618 | if !current_line_started | |
619 | then (start_line true; TBang (get_current_line_type lexbuf)) | |
620 | else if !Data.in_meta | |
621 | then TBang0 | |
622 | else (add_current_line_type D.UNIQUE; token lexbuf) } | |
aba5c457 | 623 | | "(" { if !Data.in_meta or not !col_zero |
34e49164 C |
624 | then (start_line true; TOPar (get_current_line_type lexbuf)) |
625 | else | |
626 | (start_line true; check_context_linetype (tok lexbuf); | |
627 | TOPar0 (get_current_line_type lexbuf))} | |
97111a47 C |
628 | | "\\(" { start_line true; |
629 | TOPar0 (contextify(get_current_line_type lexbuf)) } | |
34e49164 C |
630 | | "|" { if not (!col_zero) |
631 | then (start_line true; TOr(get_current_line_type lexbuf)) | |
632 | else (start_line true; | |
633 | check_context_linetype (tok lexbuf); | |
634 | TMid0 (get_current_line_type lexbuf))} | |
97111a47 C |
635 | | "\\|" { start_line true; |
636 | TMid0 (contextify(get_current_line_type lexbuf)) } | |
34e49164 C |
637 | | ")" { if not !col_zero |
638 | then (start_line true; TCPar (get_current_line_type lexbuf)) | |
639 | else | |
640 | (start_line true; check_context_linetype (tok lexbuf); | |
641 | TCPar0 (get_current_line_type lexbuf))} | |
97111a47 C |
642 | | "\\)" { start_line true; |
643 | TCPar0 (contextify(get_current_line_type lexbuf)) } | |
34e49164 C |
644 | |
645 | | '[' { start_line true; TOCro (get_current_line_type lexbuf) } | |
646 | | ']' { start_line true; TCCro (get_current_line_type lexbuf) } | |
647 | | '{' { start_line true; TOBrace (get_current_line_type lexbuf) } | |
648 | | '}' { start_line true; TCBrace (get_current_line_type lexbuf) } | |
649 | ||
650 | | "->" { start_line true; TPtrOp (get_current_line_type lexbuf) } | |
651 | | '.' { start_line true; TDot (get_current_line_type lexbuf) } | |
652 | | ',' { start_line true; TComma (get_current_line_type lexbuf) } | |
653 | | ";" { start_line true; | |
654 | if !Data.in_meta | |
655 | then TMPtVirg (* works better with tokens_all *) | |
656 | else TPtVirg (get_current_line_type lexbuf) } | |
657 | ||
faf9a90c | 658 | |
34e49164 C |
659 | | '*' { pass_zero(); |
660 | if !current_line_started | |
661 | then | |
662 | (start_line true; TMul (get_current_line_type lexbuf)) | |
663 | else | |
664 | (patch_or_match MATCH; | |
665 | add_current_line_type D.MINUS; token lexbuf) } | |
666 | | '/' { start_line true; | |
faf9a90c | 667 | TDmOp (Ast.Div,get_current_line_type lexbuf) } |
34e49164 | 668 | | '%' { start_line true; |
faf9a90c C |
669 | TDmOp (Ast.Mod,get_current_line_type lexbuf) } |
670 | | '~' { start_line true; TTilde (get_current_line_type lexbuf) } | |
671 | ||
951c7801 C |
672 | | "++" { pass_zero(); |
673 | if !current_line_started | |
674 | then | |
675 | (start_line true; TInc (get_current_line_type lexbuf)) | |
676 | else (patch_or_match PATCH; | |
677 | add_current_line_type D.PLUSPLUS; token lexbuf) } | |
34e49164 | 678 | | "--" { start_line true; TDec (get_current_line_type lexbuf) } |
faf9a90c C |
679 | |
680 | | "=" { start_line true; TEq (get_current_line_type lexbuf) } | |
681 | ||
34e49164 C |
682 | | "-=" { start_line true; mkassign Ast.Minus lexbuf } |
683 | | "+=" { start_line true; mkassign Ast.Plus lexbuf } | |
faf9a90c | 684 | |
34e49164 C |
685 | | "*=" { start_line true; mkassign Ast.Mul lexbuf } |
686 | | "/=" { start_line true; mkassign Ast.Div lexbuf } | |
687 | | "%=" { start_line true; mkassign Ast.Mod lexbuf } | |
faf9a90c | 688 | |
34e49164 C |
689 | | "&=" { start_line true; mkassign Ast.And lexbuf } |
690 | | "|=" { start_line true; mkassign Ast.Or lexbuf } | |
691 | | "^=" { start_line true; mkassign Ast.Xor lexbuf } | |
faf9a90c | 692 | |
34e49164 C |
693 | | "<<=" { start_line true; mkassign Ast.DecLeft lexbuf } |
694 | | ">>=" { start_line true; mkassign Ast.DecRight lexbuf } | |
695 | ||
696 | | ":" { start_line true; TDotDot (get_current_line_type lexbuf) } | |
faf9a90c | 697 | |
951c7801 C |
698 | | "==" { start_line true; TEqEq (get_current_line_type lexbuf) } |
699 | | "!=" { start_line true; TNotEq (get_current_line_type lexbuf) } | |
34e49164 C |
700 | | ">=" { start_line true; |
701 | TLogOp(Ast.SupEq,get_current_line_type lexbuf) } | |
702 | | "<=" { start_line true; | |
5636bb2c C |
703 | if !Data.in_meta |
704 | then TSub(get_current_line_type lexbuf) | |
705 | else TLogOp(Ast.InfEq,get_current_line_type lexbuf) } | |
34e49164 | 706 | | "<" { start_line true; |
faf9a90c | 707 | TLogOp(Ast.Inf,get_current_line_type lexbuf) } |
34e49164 C |
708 | | ">" { start_line true; |
709 | TLogOp(Ast.Sup,get_current_line_type lexbuf) } | |
faf9a90c C |
710 | |
711 | | "&&" { start_line true; TAndLog (get_current_line_type lexbuf) } | |
34e49164 | 712 | | "||" { start_line true; TOrLog (get_current_line_type lexbuf) } |
faf9a90c | 713 | |
34e49164 | 714 | | ">>" { start_line true; |
413ffc02 | 715 | TShROp(Ast.DecRight,get_current_line_type lexbuf) } |
34e49164 | 716 | | "<<" { start_line true; |
413ffc02 | 717 | TShLOp(Ast.DecLeft,get_current_line_type lexbuf) } |
faf9a90c | 718 | |
34e49164 C |
719 | | "&" { start_line true; TAnd (get_current_line_type lexbuf) } |
720 | | "^" { start_line true; TXor(get_current_line_type lexbuf) } | |
721 | ||
978fd7e5 | 722 | | "##" { start_line true; TCppConcatOp } |
3a314143 C |
723 | | (( ("#" [' ' '\t']* "undef" [' ' '\t']+)) as def) |
724 | ( (letter (letter |digit)*) as ident) | |
725 | { start_line true; | |
726 | let (arity,line,lline,offset,col,strbef,straft,pos) as lt = | |
727 | get_current_line_type lexbuf in | |
728 | let off = String.length def in | |
729 | (* -1 in the code below because the ident is not at the line start *) | |
730 | TUndef | |
731 | (lt, | |
732 | check_var ident | |
8f657093 | 733 | (arity,line,lline,offset+off,col+off,[],[],[])) } |
708f4980 | 734 | | (( ("#" [' ' '\t']* "define" [' ' '\t']+)) as def) |
faf9a90c | 735 | ( (letter (letter |digit)*) as ident) |
34e49164 C |
736 | { start_line true; |
737 | let (arity,line,lline,offset,col,strbef,straft,pos) as lt = | |
738 | get_current_line_type lexbuf in | |
708f4980 | 739 | let off = String.length def in |
34e49164 C |
740 | (* -1 in the code below because the ident is not at the line start *) |
741 | TDefine | |
742 | (lt, | |
743 | check_var ident | |
8f657093 | 744 | (arity,line,lline,offset+off,col+off,[],[],[])) } |
708f4980 | 745 | | (( ("#" [' ' '\t']* "define" [' ' '\t']+)) as def) |
faf9a90c | 746 | ( (letter (letter | digit)*) as ident) |
34e49164 C |
747 | '(' |
748 | { start_line true; | |
749 | let (arity,line,lline,offset,col,strbef,straft,pos) as lt = | |
750 | get_current_line_type lexbuf in | |
708f4980 | 751 | let off = String.length def in |
34e49164 C |
752 | TDefineParam |
753 | (lt, | |
754 | check_var ident | |
755 | (* why pos here but not above? *) | |
708f4980 C |
756 | (arity,line,lline,offset+off,col+off,strbef,straft,pos), |
757 | offset + off + (String.length ident), | |
758 | col + off + (String.length ident)) } | |
34e49164 C |
759 | | "#" [' ' '\t']* "include" [' ' '\t']* '"' [^ '"']+ '"' |
760 | { TIncludeL | |
761 | (let str = tok lexbuf in | |
762 | let start = String.index str '"' in | |
763 | let finish = String.rindex str '"' in | |
764 | start_line true; | |
765 | (process_include start finish str,get_current_line_type lexbuf)) } | |
766 | | "#" [' ' '\t']* "include" [' ' '\t']* '<' [^ '>']+ '>' | |
767 | { TIncludeNL | |
768 | (let str = tok lexbuf in | |
769 | let start = String.index str '<' in | |
770 | let finish = String.rindex str '>' in | |
771 | start_line true; | |
772 | (process_include start finish str,get_current_line_type lexbuf)) } | |
773 | | "#" [' ' '\t']* "if" [^'\n']* | |
774 | | "#" [' ' '\t']* "ifdef" [^'\n']* | |
775 | | "#" [' ' '\t']* "ifndef" [^'\n']* | |
776 | | "#" [' ' '\t']* "else" [^'\n']* | |
777 | | "#" [' ' '\t']* "elif" [^'\n']* | |
778 | | "#" [' ' '\t']* "endif" [^'\n']* | |
779 | | "#" [' ' '\t']* "error" [^'\n']* | |
97111a47 C |
780 | | "#" [' ' '\t']* "pragma" [^'\n']* |
781 | | "#" [' ' '\t']* "line" [^'\n']* | |
34e49164 | 782 | { start_line true; check_plus_linetype (tok lexbuf); |
c3e37e97 | 783 | TPragma (Ast.Noindent(tok lexbuf), get_current_line_type lexbuf) } |
0708f913 | 784 | | "/*" |
8babbc8f C |
785 | { |
786 | match !current_line_type with | |
787 | (D.PLUS,_,_) | (D.PLUSPLUS,_,_) -> | |
788 | start_line true; | |
0708f913 | 789 | (* second argument to TPragma is not quite right, because |
aa721442 | 790 | it represents only the first token of the comment, but that |
0708f913 | 791 | should be good enough *) |
8babbc8f C |
792 | TPragma (Ast.Indent("/*"^(comment check_comment lexbuf)), |
793 | get_current_line_type lexbuf) | |
794 | | _ -> let _ = comment (fun _ -> ()) lexbuf in token lexbuf } | |
34e49164 C |
795 | | "---" [^'\n']* |
796 | { (if !current_line_started | |
797 | then lexerr "--- must be at the beginning of the line" ""); | |
798 | start_line true; | |
799 | TMinusFile | |
800 | (let str = tok lexbuf in | |
801 | (drop_spaces(String.sub str 3 (String.length str - 3)), | |
802 | (get_current_line_type lexbuf))) } | |
803 | | "+++" [^'\n']* | |
804 | { (if !current_line_started | |
805 | then lexerr "+++ must be at the beginning of the line" ""); | |
806 | start_line true; | |
807 | TPlusFile | |
808 | (let str = tok lexbuf in | |
809 | (drop_spaces(String.sub str 3 (String.length str - 3)), | |
810 | (get_current_line_type lexbuf))) } | |
811 | ||
812 | | letter (letter | digit)* | |
faf9a90c | 813 | { start_line true; id_tokens lexbuf } |
34e49164 C |
814 | |
815 | | "'" { start_line true; | |
816 | TChar(char lexbuf,get_current_line_type lexbuf) } | |
817 | | '"' { start_line true; | |
818 | TString(string lexbuf,(get_current_line_type lexbuf)) } | |
819 | | (real as x) { start_line true; | |
820 | TFloat(x,(get_current_line_type lexbuf)) } | |
faf9a90c C |
821 | | ((( decimal | hexa | octal) |
822 | ( ['u' 'U'] | |
823 | | ['l' 'L'] | |
34e49164 C |
824 | | (['l' 'L'] ['u' 'U']) |
825 | | (['u' 'U'] ['l' 'L']) | |
826 | | (['u' 'U'] ['l' 'L'] ['l' 'L']) | |
827 | | (['l' 'L'] ['l' 'L']) | |
828 | )? | |
829 | ) as x) { start_line true; TInt(x,(get_current_line_type lexbuf)) } | |
830 | ||
831 | | "<=>" { TIso } | |
832 | | "=>" { TRightIso } | |
833 | ||
834 | | eof { EOF } | |
835 | ||
836 | | _ { lexerr "unrecognised symbol, in token rule: " (tok lexbuf) } | |
837 | ||
838 | ||
839 | and char = parse | |
f3c4ece6 C |
840 | | (_ as x) { String.make 1 x ^ restchars lexbuf } |
841 | (* todo?: as for octal, do exception beyond radix exception ? *) | |
842 | | (("\\" (oct | oct oct | oct oct oct)) as x ) { x ^ restchars lexbuf } | |
843 | (* this rule must be after the one with octal, lex try first longest | |
844 | * and when \7 we want an octal, not an exn. | |
845 | *) | |
846 | | (("\\x" ((hex | hex hex))) as x ) { x ^ restchars lexbuf } | |
847 | | (("\\" (_ as v)) as x ) | |
848 | { | |
849 | (match v with (* Machine specific ? *) | |
850 | | 'n' -> () | 't' -> () | 'v' -> () | 'b' -> () | 'r' -> () | |
851 | | 'f' -> () | 'a' -> () | |
852 | | '\\' -> () | '?' -> () | '\'' -> () | '"' -> () | |
853 | | 'e' -> () (* linuxext: ? *) | |
854 | | _ -> | |
855 | Common.pr2 ("LEXER: unrecognised symbol in char:"^tok lexbuf); | |
856 | ); | |
857 | x ^ restchars lexbuf | |
858 | } | |
859 | | _ | |
860 | { Common.pr2 ("LEXER: unrecognised symbol in char:"^tok lexbuf); | |
861 | tok lexbuf ^ restchars lexbuf | |
862 | } | |
863 | ||
864 | and restchars = parse | |
865 | | "'" { "" } | |
866 | | (_ as x) { String.make 1 x ^ restchars lexbuf } | |
867 | (* todo?: as for octal, do exception beyond radix exception ? *) | |
868 | | (("\\" (oct | oct oct | oct oct oct)) as x ) { x ^ restchars lexbuf } | |
869 | (* this rule must be after the one with octal, lex try first longest | |
870 | * and when \7 we want an octal, not an exn. | |
871 | *) | |
872 | | (("\\x" ((hex | hex hex))) as x ) { x ^ restchars lexbuf } | |
873 | | (("\\" (_ as v)) as x ) | |
874 | { | |
875 | (match v with (* Machine specific ? *) | |
876 | | 'n' -> () | 't' -> () | 'v' -> () | 'b' -> () | 'r' -> () | |
877 | | 'f' -> () | 'a' -> () | |
878 | | '\\' -> () | '?' -> () | '\'' -> () | '"' -> () | |
879 | | 'e' -> () (* linuxext: ? *) | |
880 | | _ -> | |
881 | Common.pr2 ("LEXER: unrecognised symbol in char:"^tok lexbuf); | |
882 | ); | |
883 | x ^ restchars lexbuf | |
faf9a90c | 884 | } |
f3c4ece6 C |
885 | | _ |
886 | { Common.pr2 ("LEXER: unrecognised symbol in char:"^tok lexbuf); | |
887 | tok lexbuf ^ restchars lexbuf | |
888 | } | |
34e49164 C |
889 | |
890 | and string = parse | |
891 | | '"' { "" } | |
892 | | (_ as x) { Common.string_of_char x ^ string lexbuf } | |
893 | | ("\\" (oct | oct oct | oct oct oct)) as x { x ^ string lexbuf } | |
894 | | ("\\x" (hex | hex hex)) as x { x ^ string lexbuf } | |
faf9a90c C |
895 | | ("\\" (_ as v)) as x |
896 | { | |
34e49164 | 897 | (match v with |
9f8e26f4 C |
898 | | 'n' -> () | 't' -> () | 'v' -> () | 'b' -> () | 'r' -> () |
899 | | 'f' -> () | 'a' -> () | |
900 | | '\\' -> () | '?' -> () | '\'' -> () | '"' -> () | |
901 | | 'e' -> () | |
902 | | '\n' -> () | |
903 | | '(' -> () | '|' -> () | ')' -> () | |
904 | | _ -> lexerr "unrecognised symbol:" (tok lexbuf) | |
34e49164 C |
905 | ); |
906 | x ^ string lexbuf | |
907 | } | |
908 | | _ { lexerr "unrecognised symbol: " (tok lexbuf) } | |
0708f913 | 909 | |
8babbc8f | 910 | and comment check_comment = parse |
aa721442 | 911 | | "*/" { let s = tok lexbuf in check_comment s; start_line true; s } |
0708f913 | 912 | | ['\n' '\r' '\011' '\012'] |
aa721442 C |
913 | { let s = tok lexbuf in |
914 | (* even blank line should have a + *) | |
915 | check_comment s; | |
8babbc8f | 916 | reset_line lexbuf; s ^ comment check_comment lexbuf } |
0708f913 C |
917 | | "+" { pass_zero(); |
918 | if !current_line_started | |
8babbc8f C |
919 | then (start_line true; |
920 | let s = tok lexbuf in s^(comment check_comment lexbuf)) | |
921 | else (start_line true; comment check_comment lexbuf) } | |
0708f913 | 922 | (* noteopti: *) |
aa721442 C |
923 | | [^ '*'] |
924 | { let s = tok lexbuf in | |
8babbc8f | 925 | check_comment s; start_line true; s ^ comment check_comment lexbuf } |
aa721442 C |
926 | | [ '*'] |
927 | { let s = tok lexbuf in | |
8babbc8f | 928 | check_comment s; start_line true; s ^ comment check_comment lexbuf } |
951c7801 | 929 | | _ |
0708f913 C |
930 | { start_line true; let s = tok lexbuf in |
931 | Common.pr2 ("LEXER: unrecognised symbol in comment:"^s); | |
8babbc8f | 932 | s ^ comment check_comment lexbuf |
0708f913 C |
933 | } |
934 |