Commit | Line | Data |
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ab3256ed | 1 | ;;; ebnf2ps.el --- translate an EBNF to a syntactic chart on PostScript |
984ae001 | 2 | |
01d19dd7 | 3 | ;; Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc. |
984ae001 | 4 | |
0b5ecd6d | 5 | ;; Author: Vinicius Jose Latorre <vinicius@cpqd.com.br> |
984ae001 | 6 | ;; Maintainer: Vinicius Jose Latorre <vinicius@cpqd.com.br> |
0b5ecd6d | 7 | ;; Keywords: wp, ebnf, PostScript |
30fa28b4 | 8 | ;; Time-stamp: <2003/08/08 23:09:36 vinicius> |
68f38c8c | 9 | ;; Version: 3.6.1 |
0b5ecd6d | 10 | ;; X-URL: http://www.cpqd.com.br/~vinicius/emacs/ |
984ae001 | 11 | |
8d9ea7b1 | 12 | ;; This file is part of GNU Emacs. |
984ae001 | 13 | |
8d9ea7b1 | 14 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
984ae001 GM |
15 | ;; it under the terms of the GNU General Public License as published by |
16 | ;; the Free Software Foundation; either version 2, or (at your option) | |
17 | ;; any later version. | |
18 | ||
8d9ea7b1 | 19 | ;; GNU Emacs is distributed in the hope that it will be useful, |
984ae001 GM |
20 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | ;; GNU General Public License for more details. | |
23 | ||
24 | ;; You should have received a copy of the GNU General Public License | |
25 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
26 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
27 | ;; Boston, MA 02111-1307, USA. | |
28 | ||
68f38c8c GM |
29 | (defconst ebnf-version "3.6.1" |
30 | "ebnf2ps.el, v 3.6.1 <2001/09/24 vinicius> | |
8d9ea7b1 GM |
31 | |
32 | Vinicius's last change version. When reporting bugs, please also | |
33 | report the version of Emacs, if any, that ebnf2ps was running with. | |
34 | ||
35 | Please send all bug fixes and enhancements to | |
36 | Vinicius Jose Latorre <vinicius@cpqd.com.br>. | |
37 | ") | |
38 | ||
39 | ||
984ae001 GM |
40 | ;;; Commentary: |
41 | ||
42 | ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
43 | ;; | |
44 | ;; Introduction | |
45 | ;; ------------ | |
46 | ;; | |
ab3256ed | 47 | ;; This package translates an EBNF to a syntactic chart on PostScript. |
984ae001 GM |
48 | ;; |
49 | ;; To use ebnf2ps, insert in your ~/.emacs: | |
50 | ;; | |
51 | ;; (require 'ebnf2ps) | |
52 | ;; | |
b685181e GM |
53 | ;; ebnf2ps uses ps-print package (version 5.2.3 or later), so see ps-print to |
54 | ;; know how to set options like landscape printing, page headings, margins, | |
55 | ;; etc. | |
984ae001 GM |
56 | ;; |
57 | ;; NOTE: ps-print zebra stripes and line number options doesn't have effect on | |
58 | ;; ebnf2ps, they behave as it's turned off. | |
59 | ;; | |
60 | ;; For good performance, be sure to byte-compile ebnf2ps.el, e.g. | |
61 | ;; | |
62 | ;; M-x byte-compile-file <give the path to ebnf2ps.el when prompted> | |
63 | ;; | |
64 | ;; This will generate ebnf2ps.elc, which will be loaded instead of ebnf2ps.el. | |
65 | ;; | |
66 | ;; ebnf2ps was tested with GNU Emacs 20.4.1. | |
67 | ;; | |
68 | ;; | |
69 | ;; Using ebnf2ps | |
70 | ;; ------------- | |
71 | ;; | |
ab3256ed | 72 | ;; ebnf2ps provides six commands for generating PostScript syntactic chart |
b685181e | 73 | ;; images of Emacs buffers: |
984ae001 | 74 | ;; |
b685181e GM |
75 | ;; ebnf-print-buffer |
76 | ;; ebnf-print-region | |
77 | ;; ebnf-spool-buffer | |
78 | ;; ebnf-spool-region | |
79 | ;; ebnf-eps-buffer | |
80 | ;; ebnf-eps-region | |
984ae001 GM |
81 | ;; |
82 | ;; These commands all perform essentially the same function: they generate | |
ab3256ed | 83 | ;; PostScript syntactic chart images suitable for printing on a PostScript |
984ae001 GM |
84 | ;; printer or displaying with GhostScript. These commands are collectively |
85 | ;; referred to as "ebnf- commands". | |
86 | ;; | |
87 | ;; The word "print", "spool" and "eps" in the command name determines when the | |
88 | ;; PostScript image is sent to the printer (or file): | |
89 | ;; | |
b685181e | 90 | ;; print - The PostScript image is immediately sent to the printer; |
984ae001 | 91 | ;; |
b685181e GM |
92 | ;; spool - The PostScript image is saved temporarily in an Emacs buffer. |
93 | ;; Many images may be spooled locally before printing them. To | |
94 | ;; send the spooled images to the printer, use the command | |
95 | ;; `ebnf-despool'. | |
984ae001 | 96 | ;; |
b685181e | 97 | ;; eps - The PostScript image is immediately sent to a EPS file. |
984ae001 GM |
98 | ;; |
99 | ;; The spooling mechanism is the same as used by ps-print and was designed for | |
100 | ;; printing lots of small files to save paper that would otherwise be wasted on | |
101 | ;; banner pages, and to make it easier to find your output at the printer (it's | |
102 | ;; easier to pick up one 50-page printout than to find 50 single-page | |
103 | ;; printouts). As ebnf2ps and ps-print use the same Emacs buffer to spool | |
104 | ;; images, you can intermix the spooling of ebnf2ps and ps-print images. | |
105 | ;; | |
106 | ;; ebnf2ps use the same hook of ps-print in the `kill-emacs-hook' so that you | |
107 | ;; won't accidentally quit from Emacs while you have unprinted PostScript | |
108 | ;; waiting in the spool buffer. If you do attempt to exit with spooled | |
109 | ;; PostScript, you'll be asked if you want to print it, and if you decline, | |
b685181e GM |
110 | ;; you'll be asked to confirm the exit; this is modeled on the confirmation |
111 | ;; that Emacs uses for modified buffers. | |
984ae001 GM |
112 | ;; |
113 | ;; The word "buffer" or "region" in the command name determines how much of the | |
114 | ;; buffer is printed: | |
115 | ;; | |
b685181e | 116 | ;; buffer - Print the entire buffer. |
984ae001 | 117 | ;; |
b685181e | 118 | ;; region - Print just the current region. |
984ae001 GM |
119 | ;; |
120 | ;; Two ebnf- command examples: | |
121 | ;; | |
b685181e GM |
122 | ;; ebnf-print-buffer - translate and print the entire buffer, and send it |
123 | ;; immediately to the printer. | |
984ae001 | 124 | ;; |
b685181e GM |
125 | ;; ebnf-spool-region - translate and print just the current region, and |
126 | ;; spool the image in Emacs to send to the printer | |
127 | ;; later. | |
984ae001 GM |
128 | ;; |
129 | ;; Note that `ebnf-eps-buffer' and `ebnf-eps-region' never spool the EPS image, | |
130 | ;; so they don't use the ps-print spooling mechanism. See section "Actions in | |
131 | ;; Comments" for an explanation about EPS file generation. | |
132 | ;; | |
133 | ;; | |
134 | ;; Invoking Ebnf2ps | |
135 | ;; ---------------- | |
136 | ;; | |
137 | ;; To translate and print your buffer, type | |
138 | ;; | |
139 | ;; M-x ebnf-print-buffer | |
140 | ;; | |
141 | ;; or substitute one of the other four ebnf- commands. The command will | |
142 | ;; generate the PostScript image and print or spool it as specified. By giving | |
143 | ;; the command a prefix argument | |
144 | ;; | |
145 | ;; C-u M-x ebnf-print-buffer | |
146 | ;; | |
147 | ;; it will save the PostScript image to a file instead of sending it to the | |
148 | ;; printer; you will be prompted for the name of the file to save the image to. | |
149 | ;; The prefix argument is ignored by the commands that spool their images, but | |
150 | ;; you may save the spooled images to a file by giving a prefix argument to | |
151 | ;; `ebnf-despool': | |
152 | ;; | |
153 | ;; C-u M-x ebnf-despool | |
154 | ;; | |
155 | ;; When invoked this way, `ebnf-despool' will prompt you for the name of the | |
156 | ;; file to save to. | |
157 | ;; | |
158 | ;; The prefix argument is also ignored by `ebnf-eps-buffer' and | |
159 | ;; `ebnf-eps-region'. | |
160 | ;; | |
161 | ;; Any of the `ebnf-' commands can be bound to keys. Here are some examples: | |
162 | ;; | |
163 | ;; (global-set-key 'f22 'ebnf-print-buffer) ;f22 is prsc | |
164 | ;; (global-set-key '(shift f22) 'ebnf-print-region) | |
165 | ;; (global-set-key '(control f22) 'ebnf-despool) | |
166 | ;; | |
167 | ;; | |
168 | ;; EBNF Syntax | |
169 | ;; ----------- | |
170 | ;; | |
171 | ;; The current EBNF that ebnf2ps accepts has the following constructions: | |
172 | ;; | |
173 | ;; ; comment (until end of line) | |
174 | ;; A non-terminal | |
175 | ;; "C" terminal | |
176 | ;; ?C? special | |
177 | ;; $A default non-terminal (see text below) | |
178 | ;; $"C" default terminal (see text below) | |
179 | ;; $?C? default special (see text below) | |
180 | ;; A = B. production (A is the header and B the body) | |
181 | ;; C D sequence (C occurs before D) | |
182 | ;; C | D alternative (C or D occurs) | |
183 | ;; A - B exception (A excluding B, B without any non-terminal) | |
184 | ;; n * A repetition (A repeats n (integer) times) | |
185 | ;; (C) group (expression C is grouped together) | |
186 | ;; [C] optional (C may or not occurs) | |
187 | ;; C+ one or more occurrences of C | |
188 | ;; {C}+ one or more occurrences of C | |
189 | ;; {C}* zero or more occurrences of C | |
190 | ;; {C} zero or more occurrences of C | |
191 | ;; C / D equivalent to: C {D C}* | |
192 | ;; {C || D}+ equivalent to: C {D C}* | |
193 | ;; {C || D}* equivalent to: [C {D C}*] | |
194 | ;; {C || D} equivalent to: [C {D C}*] | |
195 | ;; | |
196 | ;; The EBNF syntax written using the notation above is: | |
197 | ;; | |
198 | ;; EBNF = {production}+. | |
199 | ;; | |
200 | ;; production = non_terminal "=" body ".". ;; production | |
201 | ;; | |
202 | ;; body = {sequence || "|"}*. ;; alternative | |
203 | ;; | |
204 | ;; sequence = {exception}*. ;; sequence | |
205 | ;; | |
206 | ;; exception = repeat [ "-" repeat]. ;; exception | |
207 | ;; | |
208 | ;; repeat = [ integer "*" ] term. ;; repetition | |
209 | ;; | |
210 | ;; term = factor | |
211 | ;; | [factor] "+" ;; one-or-more | |
212 | ;; | [factor] "/" [factor] ;; one-or-more | |
213 | ;; . | |
214 | ;; | |
215 | ;; factor = [ "$" ] "\"" terminal "\"" ;; terminal | |
216 | ;; | [ "$" ] non_terminal ;; non-terminal | |
217 | ;; | [ "$" ] "?" special "?" ;; special | |
218 | ;; | "(" body ")" ;; group | |
219 | ;; | "[" body "]" ;; zero-or-one | |
220 | ;; | "{" body [ "||" body ] "}+" ;; one-or-more | |
221 | ;; | "{" body [ "||" body ] "}*" ;; zero-or-more | |
222 | ;; | "{" body [ "||" body ] "}" ;; zero-or-more | |
223 | ;; . | |
224 | ;; | |
0b5ecd6d | 225 | ;; non_terminal = "[!#%&'*-,0-:<>@-Z\\\\^-z~\\240-\\377]+". |
984ae001 GM |
226 | ;; |
227 | ;; terminal = "\\([^\"\\]\\|\\\\[ -~\\240-\\377]\\)+". | |
228 | ;; | |
229 | ;; special = "[^?\\n\\000-\\010\\016-\\037\\177-\\237]*". | |
230 | ;; | |
231 | ;; integer = "[0-9]+". | |
232 | ;; | |
233 | ;; comment = ";" "[^\\n\\000-\\010\\016-\\037\\177-\\237]*" "\\n". | |
234 | ;; | |
235 | ;; Try to use the above EBNF to test ebnf2ps. | |
236 | ;; | |
237 | ;; The `default' terminal, non-terminal and special is a way to indicate a | |
238 | ;; default path in a production. For example, the production: | |
239 | ;; | |
240 | ;; X = [ $A ( B | $C ) | D ]. | |
241 | ;; | |
242 | ;; Indicates that the default meaning for "X" is "A C" if "X" is empty. | |
243 | ;; | |
244 | ;; The terminal name is controlled by `ebnf-terminal-regexp' and | |
245 | ;; `ebnf-case-fold-search', so it's possible to match other kind of terminal | |
246 | ;; name besides that enclosed by `"'. | |
247 | ;; | |
248 | ;; Let's see an example: | |
249 | ;; | |
250 | ;; (setq ebnf-terminal-regexp "[A-Z][_A-Z]*") ; upper case name | |
251 | ;; (setq ebnf-case-fold-search nil) ; exact matching | |
252 | ;; | |
253 | ;; If you have the production: | |
254 | ;; | |
255 | ;; Logical = "(" Expression ( OR | AND | "XOR" ) Expression ")". | |
256 | ;; | |
257 | ;; The names are classified as: | |
258 | ;; | |
259 | ;; Logical Expression non-terminal | |
260 | ;; "(" OR AND "XOR" ")" terminal | |
261 | ;; | |
b685181e GM |
262 | ;; The line comment is controlled by `ebnf-lex-comment-char'. The default |
263 | ;; value is ?\; (character `;'). | |
984ae001 GM |
264 | ;; |
265 | ;; The end of production is controlled by `ebnf-lex-eop-char'. The default | |
266 | ;; value is ?. (character `.'). | |
267 | ;; | |
268 | ;; The variable `ebnf-syntax' specifies which syntax to recognize: | |
269 | ;; | |
270 | ;; `ebnf' ebnf2ps recognizes the syntax described above. | |
271 | ;; The following variables *ONLY* have effect with this | |
272 | ;; setting: | |
273 | ;; `ebnf-terminal-regexp', `ebnf-case-fold-search', | |
274 | ;; `ebnf-lex-comment-char' and `ebnf-lex-eop-char'. | |
275 | ;; | |
276 | ;; `iso-ebnf' ebnf2ps recognizes the syntax described in the URL: | |
277 | ;; `http://www.cl.cam.ac.uk/~mgk25/iso-ebnf.html' | |
278 | ;; ("International Standard of the ISO EBNF Notation"). | |
279 | ;; The following variables *ONLY* have effect with this | |
280 | ;; setting: | |
281 | ;; `ebnf-iso-alternative-p' and `ebnf-iso-normalize-p'. | |
282 | ;; | |
283 | ;; `yacc' ebnf2ps recognizes the Yacc/Bison syntax. | |
284 | ;; The following variable *ONLY* has effect with this | |
285 | ;; setting: | |
286 | ;; `ebnf-yac-ignore-error-recovery'. | |
287 | ;; | |
288 | ;; Any other value is treated as `ebnf'. | |
289 | ;; | |
290 | ;; The default value is `ebnf'. | |
291 | ;; | |
292 | ;; | |
293 | ;; Optimizations | |
294 | ;; ------------- | |
295 | ;; | |
296 | ;; The following EBNF optimizations are done: | |
297 | ;; | |
298 | ;; [ { A }* ] ==> { A }* | |
299 | ;; [ { A }+ ] ==> { A }* | |
300 | ;; [ A ] + ==> { A }* | |
301 | ;; { A }* + ==> { A }* | |
302 | ;; { A }+ + ==> { A }+ | |
303 | ;; { A }- ==> { A }+ | |
304 | ;; [ A ]- ==> A | |
305 | ;; ( A | EMPTY )- ==> A | |
306 | ;; ( A | B | EMPTY )- ==> A | B | |
307 | ;; [ A | B ] ==> A | B | EMPTY | |
308 | ;; n * EMPTY ==> EMPTY | |
309 | ;; EMPTY + ==> EMPTY | |
310 | ;; EMPTY / EMPTY ==> EMPTY | |
311 | ;; EMPTY - A ==> EMPTY | |
312 | ;; | |
313 | ;; The following optimizations are done when `ebnf-optimize' is non-nil: | |
314 | ;; | |
315 | ;; left recursion: | |
316 | ;; 1. A = B | A C. ==> A = B {C}*. | |
317 | ;; 2. A = B | A B. ==> A = {B}+. | |
318 | ;; 3. A = | A B. ==> A = {B}*. | |
319 | ;; 4. A = B | A C B. ==> A = {B || C}+. | |
320 | ;; 5. A = B | D | A C | A E. ==> A = ( B | D ) { C | E }*. | |
321 | ;; | |
322 | ;; optional: | |
323 | ;; 6. A = B | . ==> A = [B]. | |
324 | ;; 7. A = | B . ==> A = [B]. | |
325 | ;; | |
326 | ;; factoration: | |
327 | ;; 8. A = B C | B D. ==> A = B (C | D). | |
328 | ;; 9. A = C B | D B. ==> A = (C | D) B. | |
329 | ;; 10. A = B C E | B D E. ==> A = B (C | D) E. | |
330 | ;; | |
331 | ;; The above optimizations are specially useful when `ebnf-syntax' is `yacc'. | |
332 | ;; | |
333 | ;; | |
334 | ;; Form Feed | |
335 | ;; --------- | |
336 | ;; | |
b685181e GM |
337 | ;; You may use form feed (^L \014) to force a production to start on a new |
338 | ;; page, for example: | |
984ae001 GM |
339 | ;; |
340 | ;; a) A = B | C. | |
341 | ;; ^L | |
342 | ;; X = Y | Z. | |
343 | ;; | |
344 | ;; b) A = B ^L | C. | |
345 | ;; X = Y | Z. | |
346 | ;; | |
347 | ;; c) A = B ^L^L^L | C.^L | |
348 | ;; ^L | |
349 | ;; X = Y | Z. | |
350 | ;; | |
351 | ;; In all examples above, only the production X will start on a new page. | |
352 | ;; | |
353 | ;; | |
354 | ;; Actions in Comments | |
355 | ;; ------------------- | |
356 | ;; | |
357 | ;; ebnf2ps accepts the following actions in comments: | |
358 | ;; | |
359 | ;; ;> the next production starts in the same line as the current one. | |
360 | ;; It is useful when `ebnf-horizontal-orientation' is nil. | |
361 | ;; | |
362 | ;; ;< the next production starts in the next line. | |
363 | ;; It is useful when `ebnf-horizontal-orientation' is non-nil. | |
364 | ;; | |
365 | ;; ;[EPS open a new EPS file. The EPS file name has the form: | |
366 | ;; <PREFIX><NAME>.eps | |
b685181e GM |
367 | ;; where <PREFIX> is given by variable `ebnf-eps-prefix' and |
368 | ;; <NAME> is the string given by ;[ action comment, this string is | |
369 | ;; mapped to form a valid file name (see documentation for | |
984ae001 GM |
370 | ;; `ebnf-eps-buffer' or `ebnf-eps-region'). |
371 | ;; It has effect only during `ebnf-eps-buffer' or | |
372 | ;; `ebnf-eps-region' execution. | |
373 | ;; It's an error to try to open an already opened EPS file. | |
374 | ;; | |
375 | ;; ;]EPS close an opened EPS file. | |
376 | ;; It has effect only during `ebnf-eps-buffer' or | |
377 | ;; `ebnf-eps-region' execution. | |
378 | ;; It's an error to try to close a not opened EPS file. | |
379 | ;; | |
380 | ;; So if you have: | |
381 | ;; | |
382 | ;; (setq ebnf-horizontal-orientation nil) | |
383 | ;; | |
384 | ;; A = t. | |
385 | ;; C = x. | |
386 | ;; ;> C and B are drawn in the same line | |
387 | ;; B = y. | |
388 | ;; W = v. | |
389 | ;; | |
390 | ;; The graphical result is: | |
391 | ;; | |
392 | ;; +---+ | |
393 | ;; | A | | |
394 | ;; +---+ | |
395 | ;; | |
396 | ;; +---------+ +-----+ | |
397 | ;; | | | | | |
398 | ;; | C | | | | |
399 | ;; | | | B | | |
400 | ;; +---------+ | | | |
401 | ;; | | | |
402 | ;; +-----+ | |
403 | ;; | |
404 | ;; +-----------+ | |
405 | ;; | W | | |
406 | ;; +-----------+ | |
407 | ;; | |
408 | ;; Note that if ascending production sort is used, the productions A and B will | |
409 | ;; be drawn in the same line instead of C and B. | |
410 | ;; | |
b685181e GM |
411 | ;; If consecutive actions occur, only the last one takes effect, so if you |
412 | ;; have: | |
984ae001 GM |
413 | ;; |
414 | ;; A = X. | |
415 | ;; ;< | |
416 | ;; ^L | |
417 | ;; ;> | |
418 | ;; B = Y. | |
419 | ;; | |
420 | ;; Only the ;> will take effect, that is, A and B will be drawn in the same | |
421 | ;; line. | |
422 | ;; | |
423 | ;; In ISO EBNF the above actions are specified as (*>*), (*<*), (*[EPS*) and | |
424 | ;; (*]EPS*). The first example above should be written: | |
425 | ;; | |
426 | ;; A = t; | |
427 | ;; C = x; | |
428 | ;; (*> C and B are drawn in the same line *) | |
429 | ;; B = y; | |
430 | ;; W = v; | |
431 | ;; | |
432 | ;; For an example of EPS action when executing `ebnf-eps-buffer' or | |
433 | ;; `ebnf-eps-region': | |
434 | ;; | |
435 | ;; Z = B0. | |
436 | ;; ;[CC | |
437 | ;; ;[AA | |
438 | ;; A = B1. | |
439 | ;; ;[BB | |
440 | ;; C = B2. | |
441 | ;; ;]AA | |
442 | ;; B = B3. | |
443 | ;; ;]BB | |
444 | ;; ;]CC | |
445 | ;; D = B4. | |
446 | ;; E = B5. | |
447 | ;; ;[CC | |
448 | ;; F = B6. | |
449 | ;; ;]CC | |
450 | ;; G = B7. | |
451 | ;; | |
452 | ;; The following table summarizes the results: | |
453 | ;; | |
454 | ;; EPS FILE NAME NO SORT ASCENDING SORT DESCENDING SORT | |
455 | ;; ebnf--AA.eps A C A C C A | |
456 | ;; ebnf--BB.eps C B B C C B | |
457 | ;; ebnf--CC.eps A C B F A B C F F C B A | |
458 | ;; ebnf--D.eps D D D | |
459 | ;; ebnf--E.eps E E E | |
460 | ;; ebnf--G.eps G G G | |
461 | ;; ebnf--Z.eps Z Z Z | |
462 | ;; | |
463 | ;; As you can see if EPS actions is not used, each single production is | |
464 | ;; generated per EPS file. To avoid overriding EPS files, use names in ;[ that | |
465 | ;; it's not an existing production name. | |
466 | ;; | |
467 | ;; In the following case: | |
468 | ;; | |
469 | ;; A = B0. | |
470 | ;; ;[AA | |
471 | ;; A = B1. | |
472 | ;; ;[BB | |
473 | ;; A = B2. | |
474 | ;; | |
475 | ;; The production A is generated in both files ebnf--AA.eps and ebnf--BB.eps. | |
476 | ;; | |
477 | ;; | |
478 | ;; Utilities | |
479 | ;; --------- | |
480 | ;; | |
481 | ;; Some tools are provided to help you. | |
482 | ;; | |
483 | ;; `ebnf-setup' returns the current setup. | |
484 | ;; | |
ab3256ed | 485 | ;; `ebnf-syntax-buffer' does a syntactic analysis of your EBNF in the current |
984ae001 GM |
486 | ;; buffer. |
487 | ;; | |
ab3256ed | 488 | ;; `ebnf-syntax-region' does a syntactic analysis of your EBNF in the current |
984ae001 GM |
489 | ;; region. |
490 | ;; | |
491 | ;; `ebnf-customize' activates a customization buffer for ebnf2ps options. | |
492 | ;; | |
493 | ;; `ebnf-syntax-buffer', `ebnf-syntax-region' and `ebnf-customize' can be bound | |
494 | ;; to keys in the same way as `ebnf-' commands. | |
495 | ;; | |
496 | ;; | |
497 | ;; Hooks | |
498 | ;; ----- | |
499 | ;; | |
500 | ;; ebn2ps has the following hook variables: | |
501 | ;; | |
502 | ;; `ebnf-hook' | |
503 | ;; It is evaluated once before any ebnf2ps process. | |
504 | ;; | |
505 | ;; `ebnf-production-hook' | |
506 | ;; It is evaluated on each beginning of production. | |
507 | ;; | |
508 | ;; `ebnf-page-hook' | |
509 | ;; It is evaluated on each beginning of page. | |
510 | ;; | |
511 | ;; | |
512 | ;; Options | |
513 | ;; ------- | |
514 | ;; | |
515 | ;; Below it's shown a brief description of ebnf2ps options, please, see the | |
516 | ;; options declaration in the code for a long documentation. | |
517 | ;; | |
518 | ;; `ebnf-horizontal-orientation' Non-nil means productions are drawn | |
519 | ;; horizontally. | |
520 | ;; | |
521 | ;; `ebnf-horizontal-max-height' Non-nil means to use maximum production | |
522 | ;; height in horizontal orientation. | |
523 | ;; | |
524 | ;; `ebnf-production-horizontal-space' Specify horizontal space in points | |
525 | ;; between productions. | |
526 | ;; | |
b685181e GM |
527 | ;; `ebnf-production-vertical-space' Specify vertical space in points |
528 | ;; between productions. | |
984ae001 GM |
529 | ;; |
530 | ;; `ebnf-justify-sequence' Specify justification of terms in a | |
531 | ;; sequence inside alternatives. | |
532 | ;; | |
533 | ;; `ebnf-terminal-regexp' Specify how it's a terminal name. | |
534 | ;; | |
535 | ;; `ebnf-case-fold-search' Non-nil means ignore case on matching. | |
536 | ;; | |
537 | ;; `ebnf-terminal-font' Specify terminal font. | |
538 | ;; | |
539 | ;; `ebnf-terminal-shape' Specify terminal box shape. | |
540 | ;; | |
541 | ;; `ebnf-terminal-shadow' Non-nil means terminal box will have a | |
542 | ;; shadow. | |
543 | ;; | |
544 | ;; `ebnf-terminal-border-width' Specify border width for terminal box. | |
545 | ;; | |
546 | ;; `ebnf-terminal-border-color' Specify border color for terminal box. | |
547 | ;; | |
548 | ;; `ebnf-sort-production' Specify how productions are sorted. | |
549 | ;; | |
550 | ;; `ebnf-production-font' Specify production font. | |
551 | ;; | |
552 | ;; `ebnf-non-terminal-font' Specify non-terminal font. | |
553 | ;; | |
554 | ;; `ebnf-non-terminal-shape' Specify non-terminal box shape. | |
555 | ;; | |
b685181e GM |
556 | ;; `ebnf-non-terminal-shadow' Non-nil means non-terminal box will |
557 | ;; have a shadow. | |
984ae001 GM |
558 | ;; |
559 | ;; `ebnf-non-terminal-border-width' Specify border width for non-terminal | |
560 | ;; box. | |
561 | ;; | |
562 | ;; `ebnf-non-terminal-border-color' Specify border color for non-terminal | |
563 | ;; box. | |
564 | ;; | |
565 | ;; `ebnf-special-font' Specify special font. | |
566 | ;; | |
567 | ;; `ebnf-special-shape' Specify special box shape. | |
568 | ;; | |
569 | ;; `ebnf-special-shadow' Non-nil means special box will have a | |
570 | ;; shadow. | |
571 | ;; | |
572 | ;; `ebnf-special-border-width' Specify border width for special box. | |
573 | ;; | |
574 | ;; `ebnf-special-border-color' Specify border color for special box. | |
575 | ;; | |
576 | ;; `ebnf-except-font' Specify except font. | |
577 | ;; | |
578 | ;; `ebnf-except-shape' Specify except box shape. | |
579 | ;; | |
580 | ;; `ebnf-except-shadow' Non-nil means except box will have a | |
581 | ;; shadow. | |
582 | ;; | |
583 | ;; `ebnf-except-border-width' Specify border width for except box. | |
584 | ;; | |
585 | ;; `ebnf-except-border-color' Specify border color for except box. | |
586 | ;; | |
587 | ;; `ebnf-repeat-font' Specify repeat font. | |
588 | ;; | |
589 | ;; `ebnf-repeat-shape' Specify repeat box shape. | |
590 | ;; | |
591 | ;; `ebnf-repeat-shadow' Non-nil means repeat box will have a | |
592 | ;; shadow. | |
593 | ;; | |
594 | ;; `ebnf-repeat-border-width' Specify border width for repeat box. | |
595 | ;; | |
596 | ;; `ebnf-repeat-border-color' Specify border color for repeat box. | |
597 | ;; | |
598 | ;; `ebnf-entry-percentage' Specify entry height on alternatives. | |
599 | ;; | |
600 | ;; `ebnf-arrow-shape' Specify the arrow shape. | |
601 | ;; | |
602 | ;; `ebnf-chart-shape' Specify chart flow shape. | |
603 | ;; | |
604 | ;; `ebnf-color-p' Non-nil means use color. | |
605 | ;; | |
606 | ;; `ebnf-line-width' Specify flow line width. | |
607 | ;; | |
608 | ;; `ebnf-line-color' Specify flow line color. | |
609 | ;; | |
bf061ba6 | 610 | ;; `ebnf-user-arrow' Specify a sexp for user arrow shape (a |
b685181e | 611 | ;; PostScript code). |
984ae001 GM |
612 | ;; |
613 | ;; `ebnf-debug-ps' Non-nil means to generate PostScript | |
614 | ;; debug procedures. | |
615 | ;; | |
616 | ;; `ebnf-lex-comment-char' Specify the line comment character. | |
617 | ;; | |
b685181e GM |
618 | ;; `ebnf-lex-eop-char' Specify the end of production |
619 | ;; character. | |
984ae001 GM |
620 | ;; |
621 | ;; `ebnf-syntax' Specify syntax to be recognized. | |
622 | ;; | |
623 | ;; `ebnf-iso-alternative-p' Non-nil means use alternative ISO EBNF. | |
624 | ;; | |
625 | ;; `ebnf-iso-normalize-p' Non-nil means normalize ISO EBNF syntax | |
626 | ;; names. | |
627 | ;; | |
628 | ;; `ebnf-default-width' Specify additional border width over | |
629 | ;; default terminal, non-terminal or | |
630 | ;; special. | |
631 | ;; | |
632 | ;; `ebnf-eps-prefix' Specify EPS prefix file name. | |
633 | ;; | |
634 | ;; `ebnf-use-float-format' Non-nil means use `%f' float format. | |
635 | ;; | |
636 | ;; `ebnf-yac-ignore-error-recovery' Non-nil means ignore error recovery. | |
637 | ;; | |
638 | ;; `ebnf-ignore-empty-rule' Non-nil means ignore empty rules. | |
639 | ;; | |
ab3256ed | 640 | ;; `ebnf-optimize' Non-nil means optimize syntactic chart |
b685181e | 641 | ;; of rules. |
984ae001 GM |
642 | ;; |
643 | ;; To set the above options you may: | |
644 | ;; | |
645 | ;; a) insert the code in your ~/.emacs, like: | |
646 | ;; | |
647 | ;; (setq ebnf-terminal-shape 'bevel) | |
648 | ;; | |
649 | ;; This way always keep your default settings when you enter a new Emacs | |
650 | ;; session. | |
651 | ;; | |
652 | ;; b) or use `set-variable' in your Emacs session, like: | |
653 | ;; | |
654 | ;; M-x set-variable RET ebnf-terminal-shape RET bevel RET | |
655 | ;; | |
656 | ;; This way keep your settings only during the current Emacs session. | |
657 | ;; | |
658 | ;; c) or use customization, for example: | |
659 | ;; click on menu-bar *Help* option, | |
660 | ;; then click on *Customize*, | |
661 | ;; then click on *Browse Customization Groups*, | |
662 | ;; expand *PostScript* group, | |
663 | ;; expand *Ebnf2ps* group | |
664 | ;; and then customize ebnf2ps options. | |
665 | ;; Through this way, you may choose if the settings are kept or not when | |
666 | ;; you leave out the current Emacs session. | |
667 | ;; | |
668 | ;; d) or see the option value: | |
669 | ;; | |
670 | ;; C-h v ebnf-terminal-shape RET | |
671 | ;; | |
672 | ;; and click the *customize* hypertext button. | |
673 | ;; Through this way, you may choose if the settings are kept or not when | |
674 | ;; you leave out the current Emacs session. | |
675 | ;; | |
676 | ;; e) or invoke: | |
677 | ;; | |
678 | ;; M-x ebnf-customize RET | |
679 | ;; | |
680 | ;; and then customize ebnf2ps options. | |
681 | ;; Through this way, you may choose if the settings are kept or not when | |
682 | ;; you leave out the current Emacs session. | |
683 | ;; | |
684 | ;; | |
685 | ;; Styles | |
686 | ;; ------ | |
687 | ;; | |
688 | ;; Sometimes you need to change the EBNF style you are using, for example, | |
689 | ;; change the shapes and colors. These changes may force you to set some | |
690 | ;; variables and after use, set back the variables to the old values. | |
691 | ;; | |
692 | ;; To help to handle this situation, ebnf2ps has the following commands to | |
693 | ;; handle styles: | |
694 | ;; | |
695 | ;; `ebnf-insert-style' Insert a new style NAME with inheritance INHERITS and | |
696 | ;; values VALUES. | |
697 | ;; | |
698 | ;; `ebnf-merge-style' Merge values of style NAME with style VALUES. | |
699 | ;; | |
700 | ;; `ebnf-apply-style' Set STYLE to current style. | |
701 | ;; | |
702 | ;; `ebnf-reset-style' Reset current style. | |
703 | ;; | |
704 | ;; `ebnf-push-style' Push the current style and set STYLE to current style. | |
705 | ;; | |
706 | ;; `ebnf-pop-style' Pop a style and set it to current style. | |
707 | ;; | |
708 | ;; These commands helps to put together a lot of variable settings in a group | |
709 | ;; and name this group. So when you wish to apply these settings it's only | |
710 | ;; needed to give the name. | |
711 | ;; | |
b685181e GM |
712 | ;; There is also a notion of simple inheritance of style; so if you declare |
713 | ;; that a style A inherits from a style B, all settings of B is applied first | |
714 | ;; and then the settings of A is applied. This is useful when you wish to | |
715 | ;; modify some aspects of an existing style, but at same time wish to keep it | |
984ae001 GM |
716 | ;; unmodified. |
717 | ;; | |
718 | ;; See documentation for `ebnf-style-database'. | |
719 | ;; | |
720 | ;; | |
721 | ;; Layout | |
722 | ;; ------ | |
723 | ;; | |
724 | ;; Below it is the layout of minimum area to draw each element, and it's used | |
725 | ;; the following terms: | |
726 | ;; | |
727 | ;; font height is given by: | |
728 | ;; (terminal font height + non-terminal font height) / 2 | |
729 | ;; | |
b685181e GM |
730 | ;; entry is the vertical position used to know where it should |
731 | ;; be drawn the flow line in the current element. | |
984ae001 GM |
732 | ;; |
733 | ;; | |
734 | ;; * SPECIAL, TERMINAL and NON-TERMINAL | |
735 | ;; | |
736 | ;; +==============+................................... | |
737 | ;; | | } font height / 2 } entry } | |
738 | ;; | XXXXXXXX...|....... } } | |
739 | ;; ====+ XXXXXXXX +==== } text height ...... } height | |
740 | ;; : | XXXXXXXX...|...:... } | |
741 | ;; : | : : | : } font height / 2 } | |
742 | ;; : +==============+...:............................... | |
743 | ;; : : : : : : | |
744 | ;; : : : : : :...................... | |
745 | ;; : : : : : } font height } | |
746 | ;; : : : : :....... } | |
747 | ;; : : : : } font height / 2 } | |
748 | ;; : : : :........... } | |
749 | ;; : : : } text width } width | |
750 | ;; : : :.................. } | |
751 | ;; : : } font height / 2 } | |
752 | ;; : :...................... } | |
753 | ;; : } font height } | |
754 | ;; :............................................. | |
755 | ;; | |
756 | ;; | |
757 | ;; * OPTIONAL | |
758 | ;; | |
759 | ;; +==========+..................................... | |
760 | ;; | | } } } | |
761 | ;; | | } entry } } | |
762 | ;; | | } } } | |
763 | ;; ===+===+ +===+===... } element height } height | |
764 | ;; : \ | | / : } } | |
765 | ;; : + | | + : } } | |
766 | ;; : | +==========+.|................. } | |
767 | ;; : | : : | : } font height } | |
768 | ;; : +==============+................................... | |
769 | ;; : : : : | |
770 | ;; : : : :...................... | |
771 | ;; : : : } font height * 2 } | |
772 | ;; : : :.......... } | |
773 | ;; : : } element width } width | |
774 | ;; : :..................... } | |
775 | ;; : } font height * 2 } | |
776 | ;; :............................................... | |
777 | ;; | |
778 | ;; | |
779 | ;; * ALTERNATIVE | |
780 | ;; | |
781 | ;; +===+................................... | |
782 | ;; +==+ A +==+ } A height } } | |
783 | ;; | +===+..|........ } entry } | |
784 | ;; + + } font height } } | |
785 | ;; / +===+...\....... } } | |
786 | ;; ===+====+ B +====+=== } B height ..... } height | |
787 | ;; : \ +===+.../....... } | |
788 | ;; : + + : } font height } | |
789 | ;; : | +===+..|........ } | |
790 | ;; : +==+ C +==+ : } C height } | |
791 | ;; : : +===+................................... | |
792 | ;; : : : : | |
793 | ;; : : : :...................... | |
794 | ;; : : : } font height * 2 } | |
795 | ;; : : :......... } | |
796 | ;; : : } max width } width | |
797 | ;; : :................. } | |
798 | ;; : } font height * 2 } | |
799 | ;; :.......................................... | |
800 | ;; | |
801 | ;; NOTES: | |
802 | ;; 1. An empty alternative has zero of height. | |
803 | ;; | |
804 | ;; 2. The variable `ebnf-entry-percentage' is used to determine the | |
805 | ;; entry point. | |
806 | ;; | |
807 | ;; | |
808 | ;; * ZERO OR MORE | |
809 | ;; | |
810 | ;; +===========+............................... | |
811 | ;; +=+ separator +=+ } separator height } | |
812 | ;; / +===========+..\........ } | |
813 | ;; + + } } | |
814 | ;; | | } font height } | |
815 | ;; + + } } | |
816 | ;; \ +===========+../........ } height = entry | |
817 | ;; +=+ element +=+ } element height } | |
818 | ;; /: +===========+..\........ } | |
819 | ;; + : : + } } | |
820 | ;; + : : + } font height } | |
821 | ;; / : : \ } } | |
822 | ;; ==+=======================+==....................... | |
823 | ;; : : : : | |
824 | ;; : : : :....................... | |
825 | ;; : : : } font height * 2 } | |
826 | ;; : : :......... } | |
827 | ;; : : } max width } width | |
828 | ;; : :......................... } | |
829 | ;; : } font height * 2 } | |
830 | ;; :................................................... | |
831 | ;; | |
832 | ;; | |
833 | ;; * ONE OR MORE | |
834 | ;; | |
835 | ;; +===========+...................................... | |
836 | ;; +=+ separator +=+ } separator height } } | |
837 | ;; / +===========+..\...... } } | |
838 | ;; + + } } entry } | |
839 | ;; | | } font height } } height | |
840 | ;; + + } } } | |
841 | ;; \ +===========+../...... } } | |
842 | ;; ===+=+ element +=+=== } element height .... } | |
843 | ;; : : +===========+...................................... | |
844 | ;; : : : : | |
845 | ;; : : : :........................ | |
846 | ;; : : : } font height * 2 } | |
847 | ;; : : :....... } | |
848 | ;; : : } max width } width | |
849 | ;; : :....................... } | |
850 | ;; : } font height * 2 } | |
851 | ;; :.............................................. | |
852 | ;; | |
853 | ;; | |
854 | ;; * PRODUCTION | |
855 | ;; | |
856 | ;; XXXXXX:...................................... | |
857 | ;; XXXXXX: } production font height } | |
858 | ;; XXXXXX:............ } | |
859 | ;; } font height } | |
860 | ;; +======+....... } height = entry | |
861 | ;; | | } } | |
862 | ;; ====+ +==== } element height } | |
863 | ;; : | | : } } | |
864 | ;; : +======+................................. | |
865 | ;; : : : : | |
866 | ;; : : : :...................... | |
867 | ;; : : : } font height * 2 } | |
868 | ;; : : :....... } | |
869 | ;; : : } element width } width | |
870 | ;; : :.............. } | |
871 | ;; : } font height * 2 } | |
872 | ;; :..................................... | |
873 | ;; | |
874 | ;; | |
875 | ;; * REPEAT | |
876 | ;; | |
877 | ;; +================+................................... | |
878 | ;; | | } font height / 2 } entry } | |
879 | ;; | +===+...|....... } } | |
880 | ;; ====+ N * | X | +==== } X height ......... } height | |
881 | ;; : | : : +===+...|...:... } | |
882 | ;; : | : : : : | : } font height / 2 } | |
883 | ;; : +================+...:............................... | |
884 | ;; : : : : : : : : | |
885 | ;; : : : : : : : :...................... | |
886 | ;; : : : : : : : } font height } | |
887 | ;; : : : : : : :....... } | |
888 | ;; : : : : : : } font height / 2 } | |
889 | ;; : : : : : :........... } | |
890 | ;; : : : : : } X width } | |
891 | ;; : : : : :............... } | |
892 | ;; : : : : } font height / 2 } width | |
893 | ;; : : : :.................. } | |
894 | ;; : : : } text width } | |
895 | ;; : : :..................... } | |
896 | ;; : : } font height / 2 } | |
897 | ;; : :........................ } | |
898 | ;; : } font height } | |
899 | ;; :............................................... | |
900 | ;; | |
901 | ;; | |
902 | ;; * EXCEPT | |
903 | ;; | |
904 | ;; +==================+................................... | |
905 | ;; | | } font height / 2 } entry } | |
906 | ;; | +===+ +===+...|....... } } | |
907 | ;; ====+ | X | - | y | +==== } max height ....... } height | |
908 | ;; : | +===+ +===+...|...:... } | |
909 | ;; : | : : : : | : } font height / 2 } | |
910 | ;; : +==================+...:............................... | |
911 | ;; : : : : : : : : | |
912 | ;; : : : : : : : :...................... | |
913 | ;; : : : : : : : } font height } | |
914 | ;; : : : : : : :....... } | |
915 | ;; : : : : : : } font height / 2 } | |
916 | ;; : : : : : :........... } | |
917 | ;; : : : : : } Y width } | |
918 | ;; : : : : :............... } | |
919 | ;; : : : : } font height } width | |
920 | ;; : : : :................... } | |
921 | ;; : : : } X width } | |
922 | ;; : : :....................... } | |
923 | ;; : : } font height / 2 } | |
924 | ;; : :.......................... } | |
925 | ;; : } font height } | |
926 | ;; :................................................. | |
927 | ;; | |
928 | ;; NOTE: If Y element is empty, it's draw nothing at Y place. | |
929 | ;; | |
930 | ;; | |
931 | ;; Internal Structures | |
932 | ;; ------------------- | |
933 | ;; | |
ab3256ed | 934 | ;; ebnf2ps has two passes. The first pass does a lexical and syntactic analysis |
984ae001 | 935 | ;; of current buffer and generates an intermediate representation. The second |
b685181e | 936 | ;; pass uses the intermediate representation to generate the PostScript |
ab3256ed | 937 | ;; syntactic chart. |
984ae001 GM |
938 | ;; |
939 | ;; The intermediate representation is a list of vectors, the vector element | |
ab3256ed JB |
940 | ;; represents a syntactic chart element. Below is a vector representation for |
941 | ;; each syntactic chart element. | |
984ae001 | 942 | ;; |
b685181e | 943 | ;; [production WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH NAME PRODUCTION ACTION] |
984ae001 GM |
944 | ;; [alternative WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH LIST] |
945 | ;; [sequence WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH LIST] | |
946 | ;; [terminal WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH NAME DEFAULT] | |
947 | ;; [non-terminal WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH NAME DEFAULT] | |
948 | ;; [special WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH NAME DEFAULT] | |
949 | ;; [empty WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH] | |
950 | ;; [optional WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH ELEMENT] | |
951 | ;; [one-or-more WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH ELEMENT SEPARATOR] | |
952 | ;; [zero-or-more WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH ELEMENT SEPARATOR] | |
953 | ;; [repeat WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH TIMES ELEMENT] | |
954 | ;; [except WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH ELEMENT ELEMENT] | |
955 | ;; | |
956 | ;; The first vector position is a function symbol used to generate PostScript | |
957 | ;; for this element. | |
958 | ;; WIDTH-FUN is a function symbol called to adjust the element width. | |
959 | ;; DIM-FUN is a function symbol called to set the element dimensions. | |
960 | ;; ENTRY is the element entry point. | |
961 | ;; HEIGHT and WIDTH are the element height and width, respectively. | |
962 | ;; NAME is a string that it's the element name. | |
963 | ;; DEFAULT is a boolean that indicates if it's a `default' element. | |
964 | ;; PRODUCTION and ELEMENT are vectors that represents sub-elements of current | |
965 | ;; one. | |
966 | ;; LIST is a list of vector that represents the list part for alternatives and | |
967 | ;; sequences. | |
968 | ;; SEPARATOR is a vector that represents the sub-element used to separate the | |
969 | ;; list elements. | |
970 | ;; TIMES is a string representing the number of times that ELEMENT is repeated | |
971 | ;; on a repeat construction. | |
972 | ;; ACTION indicates some action that should be done before production is | |
973 | ;; generated. The current actions are: | |
974 | ;; | |
975 | ;; nil no action. | |
976 | ;; | |
977 | ;; form-feed current production starts on a new page. | |
978 | ;; | |
979 | ;; newline current production starts on next line, this is useful | |
980 | ;; when `ebnf-horizontal-orientation' is non-nil. | |
981 | ;; | |
982 | ;; keep-line current production continues on the current line, this | |
983 | ;; is useful when `ebnf-horizontal-orientation' is nil. | |
984 | ;; | |
985 | ;; | |
986 | ;; Things To Change | |
987 | ;; ---------------- | |
988 | ;; | |
ab3256ed | 989 | ;; . Handle situations when syntactic chart is out of paper. |
984ae001 GM |
990 | ;; . Use other alphabet than ascii. |
991 | ;; . Optimizations... | |
992 | ;; | |
993 | ;; | |
994 | ;; Acknowledgements | |
995 | ;; ---------------- | |
996 | ;; | |
997 | ;; Thanks to all who emailed comments. | |
998 | ;; | |
999 | ;; | |
1000 | ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
1001 | ||
e8af40ee | 1002 | ;;; Code: |
984ae001 GM |
1003 | |
1004 | ||
1005 | (require 'ps-print) | |
1006 | ||
b685181e GM |
1007 | (and (string< ps-print-version "5.2.3") |
1008 | (error "`ebnf2ps' requires `ps-print' package version 5.2.3 or later")) | |
984ae001 GM |
1009 | |
1010 | \f | |
1011 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
1012 | ;; User Variables: | |
1013 | ||
1014 | ||
1015 | ;;; Interface to the command system | |
1016 | ||
1017 | (defgroup postscript nil | |
1018 | "PostScript Group" | |
1019 | :tag "PostScript" | |
1020 | :group 'emacs) | |
1021 | ||
1022 | ||
1023 | (defgroup ebnf2ps nil | |
ab3256ed | 1024 | "Translate an EBNF to a syntactic chart on PostScript" |
984ae001 GM |
1025 | :prefix "ebnf-" |
1026 | :group 'wp | |
1027 | :group 'postscript) | |
1028 | ||
1029 | ||
1030 | (defgroup ebnf-special nil | |
1031 | "Special customization" | |
1032 | :prefix "ebnf-" | |
1033 | :tag "Special" | |
1034 | :group 'ebnf2ps) | |
1035 | ||
1036 | ||
1037 | (defgroup ebnf-except nil | |
1038 | "Except customization" | |
1039 | :prefix "ebnf-" | |
1040 | :tag "Except" | |
1041 | :group 'ebnf2ps) | |
1042 | ||
1043 | ||
1044 | (defgroup ebnf-repeat nil | |
1045 | "Repeat customization" | |
1046 | :prefix "ebnf-" | |
1047 | :tag "Repeat" | |
1048 | :group 'ebnf2ps) | |
1049 | ||
1050 | ||
1051 | (defgroup ebnf-terminal nil | |
1052 | "Terminal customization" | |
1053 | :prefix "ebnf-" | |
1054 | :tag "Terminal" | |
1055 | :group 'ebnf2ps) | |
1056 | ||
1057 | ||
1058 | (defgroup ebnf-non-terminal nil | |
1059 | "Non-Terminal customization" | |
1060 | :prefix "ebnf-" | |
1061 | :tag "Non-Terminal" | |
1062 | :group 'ebnf2ps) | |
1063 | ||
1064 | ||
1065 | (defgroup ebnf-production nil | |
1066 | "Production customization" | |
1067 | :prefix "ebnf-" | |
1068 | :tag "Production" | |
1069 | :group 'ebnf2ps) | |
1070 | ||
1071 | ||
1072 | (defgroup ebnf-shape nil | |
1073 | "Shapes customization" | |
1074 | :prefix "ebnf-" | |
1075 | :tag "Shape" | |
1076 | :group 'ebnf2ps) | |
1077 | ||
1078 | ||
1079 | (defgroup ebnf-displacement nil | |
1080 | "Displacement customization" | |
1081 | :prefix "ebnf-" | |
1082 | :tag "Displacement" | |
1083 | :group 'ebnf2ps) | |
1084 | ||
1085 | ||
ab3256ed JB |
1086 | (defgroup ebnf-syntactic nil |
1087 | "Syntactic customization" | |
984ae001 | 1088 | :prefix "ebnf-" |
ab3256ed | 1089 | :tag "Syntactic" |
984ae001 GM |
1090 | :group 'ebnf2ps) |
1091 | ||
1092 | ||
1093 | (defgroup ebnf-optimization nil | |
1094 | "Optimization customization" | |
1095 | :prefix "ebnf-" | |
1096 | :tag "Optimization" | |
1097 | :group 'ebnf2ps) | |
1098 | ||
1099 | ||
1100 | (defcustom ebnf-horizontal-orientation nil | |
1101 | "*Non-nil means productions are drawn horizontally." | |
1102 | :type 'boolean | |
1103 | :group 'ebnf-displacement) | |
1104 | ||
1105 | ||
1106 | (defcustom ebnf-horizontal-max-height nil | |
1107 | "*Non-nil means to use maximum production height in horizontal orientation. | |
1108 | ||
1109 | It is only used when `ebnf-horizontal-orientation' is non-nil." | |
1110 | :type 'boolean | |
1111 | :group 'ebnf-displacement) | |
1112 | ||
1113 | ||
1114 | (defcustom ebnf-production-horizontal-space 0.0 ; use ebnf2ps default value | |
1115 | "*Specify horizontal space in points between productions. | |
1116 | ||
1117 | Value less or equal to zero forces ebnf2ps to set a proper default value." | |
1118 | :type 'number | |
1119 | :group 'ebnf-displacement) | |
1120 | ||
1121 | ||
1122 | (defcustom ebnf-production-vertical-space 0.0 ; use ebnf2ps default value | |
1123 | "*Specify vertical space in points between productions. | |
1124 | ||
1125 | Value less or equal to zero forces ebnf2ps to set a proper default value." | |
1126 | :type 'number | |
1127 | :group 'ebnf-displacement) | |
1128 | ||
1129 | ||
1130 | (defcustom ebnf-justify-sequence 'center | |
1131 | "*Specify justification of terms in a sequence inside alternatives. | |
1132 | ||
1133 | Valid values are: | |
1134 | ||
1135 | `left' left justification | |
1136 | `right' right justification | |
1137 | any other value centralize" | |
1138 | :type '(radio :tag "Sequence Justification" | |
1139 | (const left) (const right) (other :tag "center" center)) | |
1140 | :group 'ebnf-displacement) | |
1141 | ||
1142 | ||
1143 | (defcustom ebnf-special-font '(7 Courier "Black" "Gray95" bold italic) | |
1144 | "*Specify special font. | |
1145 | ||
1146 | See documentation for `ebnf-production-font'." | |
1147 | :type '(list :tag "Special Font" | |
1148 | (number :tag "Font Size") | |
1149 | (symbol :tag "Font Name") | |
1150 | (choice :tag "Foreground Color" | |
1151 | (string :tag "Name") | |
1152 | (other :tag "Default" nil)) | |
1153 | (choice :tag "Background Color" | |
1154 | (string :tag "Name") | |
1155 | (other :tag "Default" nil)) | |
1156 | (repeat :tag "Font Attributes" :inline t | |
1157 | (choice (const bold) (const italic) | |
1158 | (const underline) (const strikeout) | |
1159 | (const overline) (const shadow) | |
1160 | (const box) (const outline)))) | |
1161 | :group 'ebnf-special) | |
1162 | ||
1163 | ||
1164 | (defcustom ebnf-special-shape 'bevel | |
1165 | "*Specify special box shape. | |
1166 | ||
1167 | See documentation for `ebnf-non-terminal-shape'." | |
1168 | :type '(radio :tag "Special Shape" | |
1169 | (const miter) (const round) (const bevel)) | |
1170 | :group 'ebnf-special) | |
1171 | ||
1172 | ||
1173 | (defcustom ebnf-special-shadow nil | |
1174 | "*Non-nil means special box will have a shadow." | |
1175 | :type 'boolean | |
1176 | :group 'ebnf-special) | |
1177 | ||
1178 | ||
1179 | (defcustom ebnf-special-border-width 0.5 | |
1180 | "*Specify border width for special box." | |
1181 | :type 'number | |
1182 | :group 'ebnf-special) | |
1183 | ||
1184 | ||
1185 | (defcustom ebnf-special-border-color "Black" | |
1186 | "*Specify border color for special box." | |
1187 | :type 'string | |
1188 | :group 'ebnf-special) | |
1189 | ||
1190 | ||
1191 | (defcustom ebnf-except-font '(7 Courier "Black" "Gray90" bold italic) | |
1192 | "*Specify except font. | |
1193 | ||
1194 | See documentation for `ebnf-production-font'." | |
1195 | :type '(list :tag "Except Font" | |
1196 | (number :tag "Font Size") | |
1197 | (symbol :tag "Font Name") | |
1198 | (choice :tag "Foreground Color" | |
1199 | (string :tag "Name") | |
1200 | (other :tag "Default" nil)) | |
1201 | (choice :tag "Background Color" | |
1202 | (string :tag "Name") | |
1203 | (other :tag "Default" nil)) | |
1204 | (repeat :tag "Font Attributes" :inline t | |
1205 | (choice (const bold) (const italic) | |
1206 | (const underline) (const strikeout) | |
1207 | (const overline) (const shadow) | |
1208 | (const box) (const outline)))) | |
1209 | :group 'ebnf-except) | |
1210 | ||
1211 | ||
1212 | (defcustom ebnf-except-shape 'bevel | |
1213 | "*Specify except box shape. | |
1214 | ||
1215 | See documentation for `ebnf-non-terminal-shape'." | |
1216 | :type '(radio :tag "Except Shape" | |
1217 | (const miter) (const round) (const bevel)) | |
1218 | :group 'ebnf-except) | |
1219 | ||
1220 | ||
1221 | (defcustom ebnf-except-shadow nil | |
1222 | "*Non-nil means except box will have a shadow." | |
1223 | :type 'boolean | |
1224 | :group 'ebnf-except) | |
1225 | ||
1226 | ||
1227 | (defcustom ebnf-except-border-width 0.25 | |
1228 | "*Specify border width for except box." | |
1229 | :type 'number | |
1230 | :group 'ebnf-except) | |
1231 | ||
1232 | ||
1233 | (defcustom ebnf-except-border-color "Black" | |
1234 | "*Specify border color for except box." | |
1235 | :type 'string | |
1236 | :group 'ebnf-except) | |
1237 | ||
1238 | ||
1239 | (defcustom ebnf-repeat-font '(7 Courier "Black" "Gray85" bold italic) | |
1240 | "*Specify repeat font. | |
1241 | ||
1242 | See documentation for `ebnf-production-font'." | |
1243 | :type '(list :tag "Repeat Font" | |
1244 | (number :tag "Font Size") | |
1245 | (symbol :tag "Font Name") | |
1246 | (choice :tag "Foreground Color" | |
1247 | (string :tag "Name") | |
1248 | (other :tag "Default" nil)) | |
1249 | (choice :tag "Background Color" | |
1250 | (string :tag "Name") | |
1251 | (other :tag "Default" nil)) | |
1252 | (repeat :tag "Font Attributes" :inline t | |
1253 | (choice (const bold) (const italic) | |
1254 | (const underline) (const strikeout) | |
1255 | (const overline) (const shadow) | |
1256 | (const box) (const outline)))) | |
1257 | :group 'ebnf-repeat) | |
1258 | ||
1259 | ||
1260 | (defcustom ebnf-repeat-shape 'bevel | |
1261 | "*Specify repeat box shape. | |
1262 | ||
1263 | See documentation for `ebnf-non-terminal-shape'." | |
1264 | :type '(radio :tag "Repeat Shape" | |
1265 | (const miter) (const round) (const bevel)) | |
1266 | :group 'ebnf-repeat) | |
1267 | ||
1268 | ||
1269 | (defcustom ebnf-repeat-shadow nil | |
1270 | "*Non-nil means repeat box will have a shadow." | |
1271 | :type 'boolean | |
1272 | :group 'ebnf-repeat) | |
1273 | ||
1274 | ||
1275 | (defcustom ebnf-repeat-border-width 0.0 | |
1276 | "*Specify border width for repeat box." | |
1277 | :type 'number | |
1278 | :group 'ebnf-repeat) | |
1279 | ||
1280 | ||
1281 | (defcustom ebnf-repeat-border-color "Black" | |
1282 | "*Specify border color for repeat box." | |
1283 | :type 'string | |
1284 | :group 'ebnf-repeat) | |
1285 | ||
1286 | ||
1287 | (defcustom ebnf-terminal-font '(7 Courier "Black" "White") | |
1288 | "*Specify terminal font. | |
1289 | ||
1290 | See documentation for `ebnf-production-font'." | |
1291 | :type '(list :tag "Terminal Font" | |
1292 | (number :tag "Font Size") | |
1293 | (symbol :tag "Font Name") | |
1294 | (choice :tag "Foreground Color" | |
1295 | (string :tag "Name") | |
1296 | (other :tag "Default" nil)) | |
1297 | (choice :tag "Background Color" | |
1298 | (string :tag "Name") | |
1299 | (other :tag "Default" nil)) | |
1300 | (repeat :tag "Font Attributes" :inline t | |
1301 | (choice (const bold) (const italic) | |
1302 | (const underline) (const strikeout) | |
1303 | (const overline) (const shadow) | |
1304 | (const box) (const outline)))) | |
1305 | :group 'ebnf-terminal) | |
1306 | ||
1307 | ||
1308 | (defcustom ebnf-terminal-shape 'miter | |
1309 | "*Specify terminal box shape. | |
1310 | ||
1311 | See documentation for `ebnf-non-terminal-shape'." | |
1312 | :type '(radio :tag "Terminal Shape" | |
1313 | (const miter) (const round) (const bevel)) | |
1314 | :group 'ebnf-terminal) | |
1315 | ||
1316 | ||
1317 | (defcustom ebnf-terminal-shadow nil | |
1318 | "*Non-nil means terminal box will have a shadow." | |
1319 | :type 'boolean | |
1320 | :group 'ebnf-terminal) | |
1321 | ||
1322 | ||
1323 | (defcustom ebnf-terminal-border-width 1.0 | |
1324 | "*Specify border width for terminal box." | |
1325 | :type 'number | |
1326 | :group 'ebnf-terminal) | |
1327 | ||
1328 | ||
1329 | (defcustom ebnf-terminal-border-color "Black" | |
1330 | "*Specify border color for terminal box." | |
1331 | :type 'string | |
1332 | :group 'ebnf-terminal) | |
1333 | ||
1334 | ||
1335 | (defcustom ebnf-sort-production nil | |
1336 | "*Specify how productions are sorted. | |
1337 | ||
1338 | Valid values are: | |
1339 | ||
1340 | nil don't sort productions. | |
1341 | `ascending' ascending sort. | |
1342 | any other value descending sort." | |
1343 | :type '(radio :tag "Production Sort" | |
1344 | (const :tag "Ascending" ascending) | |
1345 | (const :tag "Descending" descending) | |
1346 | (other :tag "No Sort" nil)) | |
1347 | :group 'ebnf-production) | |
1348 | ||
1349 | ||
1350 | (defcustom ebnf-production-font '(10 Helvetica "Black" "White" bold) | |
1351 | "*Specify production header font. | |
1352 | ||
1353 | It is a list with the following form: | |
1354 | ||
1355 | (SIZE NAME FOREGROUND BACKGROUND ATTRIBUTE...) | |
1356 | ||
1357 | Where: | |
1358 | SIZE is the font size. | |
1359 | NAME is the font name symbol. | |
1360 | ATTRIBUTE is one of the following symbols: | |
1361 | bold - use bold font. | |
1362 | italic - use italic font. | |
1363 | underline - put a line under text. | |
1364 | strikeout - like underline, but the line is in middle of text. | |
1365 | overline - like underline, but the line is over the text. | |
1366 | shadow - text will have a shadow. | |
1367 | box - text will be surrounded by a box. | |
1368 | outline - print characters as hollow outlines. | |
1369 | FOREGROUND is a foreground string color name; if it's nil, the default color is | |
1370 | \"Black\". | |
1371 | BACKGROUND is a background string color name; if it's nil, the default color is | |
1372 | \"White\". | |
1373 | ||
1374 | See `ps-font-info-database' for valid font name." | |
1375 | :type '(list :tag "Production Font" | |
1376 | (number :tag "Font Size") | |
1377 | (symbol :tag "Font Name") | |
1378 | (choice :tag "Foreground Color" | |
1379 | (string :tag "Name") | |
1380 | (other :tag "Default" nil)) | |
1381 | (choice :tag "Background Color" | |
1382 | (string :tag "Name") | |
1383 | (other :tag "Default" nil)) | |
1384 | (repeat :tag "Font Attributes" :inline t | |
1385 | (choice (const bold) (const italic) | |
1386 | (const underline) (const strikeout) | |
1387 | (const overline) (const shadow) | |
1388 | (const box) (const outline)))) | |
1389 | :group 'ebnf-production) | |
1390 | ||
1391 | ||
1392 | (defcustom ebnf-non-terminal-font '(7 Helvetica "Black" "White") | |
1393 | "*Specify non-terminal font. | |
1394 | ||
1395 | See documentation for `ebnf-production-font'." | |
1396 | :type '(list :tag "Non-Terminal Font" | |
1397 | (number :tag "Font Size") | |
1398 | (symbol :tag "Font Name") | |
1399 | (choice :tag "Foreground Color" | |
1400 | (string :tag "Name") | |
1401 | (other :tag "Default" nil)) | |
1402 | (choice :tag "Background Color" | |
1403 | (string :tag "Name") | |
1404 | (other :tag "Default" nil)) | |
1405 | (repeat :tag "Font Attributes" :inline t | |
1406 | (choice (const bold) (const italic) | |
1407 | (const underline) (const strikeout) | |
1408 | (const overline) (const shadow) | |
1409 | (const box) (const outline)))) | |
1410 | :group 'ebnf-non-terminal) | |
1411 | ||
1412 | ||
1413 | (defcustom ebnf-non-terminal-shape 'round | |
1414 | "*Specify non-terminal box shape. | |
1415 | ||
1416 | Valid values are: | |
1417 | ||
1418 | `miter' +-------+ | |
1419 | | | | |
1420 | +-------+ | |
1421 | ||
1422 | `round' ------- | |
1423 | ( ) | |
1424 | ------- | |
1425 | ||
1426 | `bevel' /-------\\ | |
1427 | | | | |
1428 | \\-------/ | |
1429 | ||
1430 | Any other value is treated as `miter'." | |
1431 | :type '(radio :tag "Non-Terminal Shape" | |
1432 | (const miter) (const round) (const bevel)) | |
1433 | :group 'ebnf-non-terminal) | |
1434 | ||
1435 | ||
1436 | (defcustom ebnf-non-terminal-shadow nil | |
1437 | "*Non-nil means non-terminal box will have a shadow." | |
1438 | :type 'boolean | |
1439 | :group 'ebnf-non-terminal) | |
1440 | ||
1441 | ||
1442 | (defcustom ebnf-non-terminal-border-width 1.0 | |
1443 | "*Specify border width for non-terminal box." | |
1444 | :type 'number | |
1445 | :group 'ebnf-non-terminal) | |
1446 | ||
1447 | ||
1448 | (defcustom ebnf-non-terminal-border-color "Black" | |
1449 | "*Specify border color for non-terminal box." | |
1450 | :type 'string | |
1451 | :group 'ebnf-non-terminal) | |
1452 | ||
1453 | ||
1454 | (defcustom ebnf-arrow-shape 'hollow | |
1455 | "*Specify the arrow shape. | |
1456 | ||
1457 | Valid values are: | |
1458 | ||
1459 | `none' ====== | |
1460 | ||
1461 | `semi-up' * `transparent' * | |
1462 | * |* | |
1463 | =====* | * | |
1464 | ==+==* | |
1465 | | * | |
1466 | |* | |
1467 | * | |
1468 | ||
1469 | `semi-down' =====* `hollow' * | |
1470 | * |* | |
1471 | * | * | |
1472 | ==+ * | |
1473 | | * | |
1474 | |* | |
1475 | * | |
1476 | ||
1477 | `simple' * `full' * | |
1478 | * |* | |
1479 | =====* |X* | |
1480 | * ==+XX* | |
1481 | * |X* | |
1482 | |* | |
1483 | * | |
1484 | ||
1485 | `user' See also documentation for variable `ebnf-user-arrow'. | |
1486 | ||
1487 | Any other value is treated as `none'." | |
1488 | :type '(radio :tag "Arrow Shape" | |
1489 | (const none) (const semi-up) | |
1490 | (const semi-down) (const simple) | |
1491 | (const transparent) (const hollow) | |
1492 | (const full) (const user)) | |
1493 | :group 'ebnf-shape) | |
1494 | ||
1495 | ||
1496 | (defcustom ebnf-chart-shape 'round | |
1497 | "*Specify chart flow shape. | |
1498 | ||
1499 | See documentation for `ebnf-non-terminal-shape'." | |
1500 | :type '(radio :tag "Chart Flow Shape" | |
1501 | (const miter) (const round) (const bevel)) | |
1502 | :group 'ebnf-shape) | |
1503 | ||
1504 | ||
1505 | (defcustom ebnf-user-arrow nil | |
bf061ba6 | 1506 | "*Specify a sexp for user arrow shape (a PostScript code). |
984ae001 | 1507 | |
bf061ba6 GM |
1508 | When evaluated, the sexp should return nil or a string containing PostScript |
1509 | code. PostScript code should draw a right arrow. | |
984ae001 GM |
1510 | |
1511 | The anatomy of a right arrow is: | |
1512 | ||
1513 | ...... Initial position | |
1514 | : | |
1515 | : *................. | |
1516 | : | * } } | |
1517 | : | * } hT4 } | |
1518 | v | * } } | |
1519 | ======+======*... } hT2 | |
1520 | : | *: } } | |
1521 | : | * : } hT4 } | |
1522 | : | * : } } | |
1523 | : *................. | |
1524 | : : : | |
1525 | : : :.......... | |
1526 | : : } hT2 } | |
1527 | : :.......... } hT | |
1528 | : } hT2 } | |
1529 | :....................... | |
1530 | ||
b685181e GM |
1531 | Where `hT', `hT2' and `hT4' are predefined PostScript variable names that can |
1532 | be used to generate your own arrow. As these variables are used along | |
1533 | PostScript execution, *DON'T* modify the values of them. Instead, copy the | |
1534 | values, if you need to modify them. | |
984ae001 GM |
1535 | |
1536 | The relation between these variables is: hT = 2 * hT2 = 4 * hT4. | |
1537 | ||
1538 | The variable `ebnf-user-arrow' is only used when `ebnf-arrow-shape' is set to | |
bf061ba6 GM |
1539 | symbol `user'." |
1540 | :type '(sexp :tag "User Arrow Shape") | |
984ae001 GM |
1541 | :group 'ebnf-shape) |
1542 | ||
1543 | ||
1544 | (defcustom ebnf-syntax 'ebnf | |
1545 | "*Specify syntax to be recognized. | |
1546 | ||
1547 | Valid values are: | |
1548 | ||
887448e1 GM |
1549 | `ebnf' ebnf2ps recognizes the syntax described in ebnf2ps |
1550 | documentation. | |
984ae001 GM |
1551 | The following variables *ONLY* have effect with this |
1552 | setting: | |
1553 | `ebnf-terminal-regexp', `ebnf-case-fold-search', | |
1554 | `ebnf-lex-comment-char' and `ebnf-lex-eop-char'. | |
1555 | ||
1556 | `iso-ebnf' ebnf2ps recognizes the syntax described in the URL: | |
1557 | `http://www.cl.cam.ac.uk/~mgk25/iso-ebnf.html' | |
1558 | (\"International Standard of the ISO EBNF Notation\"). | |
1559 | The following variables *ONLY* have effect with this | |
1560 | setting: | |
1561 | `ebnf-iso-alternative-p' and `ebnf-iso-normalize-p'. | |
1562 | ||
1563 | `yacc' ebnf2ps recognizes the Yacc/Bison syntax. | |
1564 | The following variable *ONLY* has effect with this | |
1565 | setting: | |
1566 | `ebnf-yac-ignore-error-recovery'. | |
1567 | ||
1568 | Any other value is treated as `ebnf'." | |
1569 | :type '(radio :tag "Syntax" | |
1570 | (const ebnf) (const iso-ebnf) (const yacc)) | |
ab3256ed | 1571 | :group 'ebnf-syntactic) |
984ae001 GM |
1572 | |
1573 | ||
1574 | (defcustom ebnf-lex-comment-char ?\; | |
1575 | "*Specify the line comment character. | |
1576 | ||
1577 | It's used only when `ebnf-syntax' is `ebnf'." | |
1578 | :type 'character | |
ab3256ed | 1579 | :group 'ebnf-syntactic) |
984ae001 GM |
1580 | |
1581 | ||
1582 | (defcustom ebnf-lex-eop-char ?. | |
1583 | "*Specify the end of production character. | |
1584 | ||
1585 | It's used only when `ebnf-syntax' is `ebnf'." | |
1586 | :type 'character | |
ab3256ed | 1587 | :group 'ebnf-syntactic) |
984ae001 GM |
1588 | |
1589 | ||
1590 | (defcustom ebnf-terminal-regexp nil | |
1591 | "*Specify how it's a terminal name. | |
1592 | ||
1593 | If it's nil, the terminal name must be enclosed by `\"'. | |
1594 | If it's a string, it should be a regexp that it'll be used to determine a | |
1595 | terminal name; terminal name may also be enclosed by `\"'. | |
1596 | ||
1597 | It's used only when `ebnf-syntax' is `ebnf'." | |
1598 | :type '(radio :tag "Terminal Name" | |
1599 | (const nil) regexp) | |
ab3256ed | 1600 | :group 'ebnf-syntactic) |
984ae001 GM |
1601 | |
1602 | ||
1603 | (defcustom ebnf-case-fold-search nil | |
1604 | "*Non-nil means ignore case on matching. | |
1605 | ||
1606 | It's only used when `ebnf-terminal-regexp' is non-nil and when `ebnf-syntax' is | |
1607 | `ebnf'." | |
1608 | :type 'boolean | |
ab3256ed | 1609 | :group 'ebnf-syntactic) |
984ae001 GM |
1610 | |
1611 | ||
1612 | (defcustom ebnf-iso-alternative-p nil | |
1613 | "*Non-nil means use alternative ISO EBNF. | |
1614 | ||
1615 | It's only used when `ebnf-syntax' is `iso-ebnf'. | |
1616 | ||
1617 | This variable affects the following symbol set: | |
1618 | ||
1619 | STANDARD ALTERNATIVE | |
1620 | | ==> / or ! | |
1621 | [ ==> (/ | |
1622 | ] ==> /) | |
1623 | { ==> (: | |
1624 | } ==> :) | |
1625 | ; ==> ." | |
1626 | :type 'boolean | |
ab3256ed | 1627 | :group 'ebnf-syntactic) |
984ae001 GM |
1628 | |
1629 | ||
1630 | (defcustom ebnf-iso-normalize-p nil | |
1631 | "*Non-nil means normalize ISO EBNF syntax names. | |
1632 | ||
1633 | Normalize a name means that several contiguous spaces inside name become a | |
1634 | single space, so \"A B C\" is normalized to \"A B C\". | |
1635 | ||
1636 | It's only used when `ebnf-syntax' is `iso-ebnf'." | |
1637 | :type 'boolean | |
ab3256ed | 1638 | :group 'ebnf-syntactic) |
984ae001 GM |
1639 | |
1640 | ||
1641 | (defcustom ebnf-eps-prefix "ebnf--" | |
1642 | "*Specify EPS prefix file name. | |
1643 | ||
1644 | See `ebnf-eps-buffer' and `ebnf-eps-region' commands." | |
1645 | :type 'string | |
1646 | :group 'ebnf2ps) | |
1647 | ||
1648 | ||
1649 | (defcustom ebnf-entry-percentage 0.5 ; middle | |
1650 | "*Specify entry height on alternatives. | |
1651 | ||
1652 | It must be a float between 0.0 (top) and 1.0 (bottom)." | |
1653 | :type 'number | |
1654 | :group 'ebnf2ps) | |
1655 | ||
1656 | ||
1657 | (defcustom ebnf-default-width 0.6 | |
1658 | "*Specify additional border width over default terminal, non-terminal or | |
1659 | special." | |
1660 | :type 'number | |
1661 | :group 'ebnf2ps) | |
1662 | ||
1663 | ||
1664 | ;; Printing color requires x-color-values. | |
1665 | (defcustom ebnf-color-p (or (fboundp 'x-color-values) ; Emacs | |
1666 | (fboundp 'color-instance-rgb-components)) ; XEmacs | |
1667 | "*Non-nil means use color." | |
1668 | :type 'boolean | |
1669 | :group 'ebnf2ps) | |
1670 | ||
1671 | ||
1672 | (defcustom ebnf-line-width 1.0 | |
1673 | "*Specify flow line width." | |
1674 | :type 'number | |
1675 | :group 'ebnf2ps) | |
1676 | ||
1677 | ||
1678 | (defcustom ebnf-line-color "Black" | |
1679 | "*Specify flow line color." | |
1680 | :type 'string | |
1681 | :group 'ebnf2ps) | |
1682 | ||
1683 | ||
1684 | (defcustom ebnf-debug-ps nil | |
1685 | "*Non-nil means to generate PostScript debug procedures. | |
1686 | ||
1687 | It is intended to help PostScript programmers in debugging." | |
1688 | :type 'boolean | |
1689 | :group 'ebnf2ps) | |
1690 | ||
1691 | ||
1692 | (defcustom ebnf-use-float-format t | |
1693 | "*Non-nil means use `%f' float format. | |
1694 | ||
1695 | The advantage of using float format is that ebnf2ps generates a little short | |
1696 | PostScript file. | |
1697 | ||
1698 | If it occurs the error message: | |
1699 | ||
1700 | Invalid format operation %f | |
1701 | ||
1702 | when executing ebnf2ps, set `ebnf-use-float-format' to nil." | |
1703 | :type 'boolean | |
1704 | :group 'ebnf2ps) | |
1705 | ||
1706 | ||
1707 | (defcustom ebnf-yac-ignore-error-recovery nil | |
1708 | "*Non-nil means ignore error recovery. | |
1709 | ||
1710 | It's only used when `ebnf-syntax' is `yacc'." | |
1711 | :type 'boolean | |
ab3256ed | 1712 | :group 'ebnf-syntactic) |
984ae001 GM |
1713 | |
1714 | ||
1715 | (defcustom ebnf-ignore-empty-rule nil | |
1716 | "*Non-nil means ignore empty rules. | |
1717 | ||
1718 | It's interesting to set this variable if your Yacc/Bison grammar has a lot of | |
1719 | middle action rule." | |
1720 | :type 'boolean | |
1721 | :group 'ebnf-optimization) | |
1722 | ||
1723 | ||
1724 | (defcustom ebnf-optimize nil | |
ab3256ed | 1725 | "*Non-nil means optimize syntactic chart of rules. |
984ae001 GM |
1726 | |
1727 | The following optimizations are done: | |
1728 | ||
1729 | left recursion: | |
1730 | 1. A = B | A C. ==> A = B {C}*. | |
1731 | 2. A = B | A B. ==> A = {B}+. | |
1732 | 3. A = | A B. ==> A = {B}*. | |
1733 | 4. A = B | A C B. ==> A = {B || C}+. | |
1734 | 5. A = B | D | A C | A E. ==> A = ( B | D ) { C | E }*. | |
1735 | ||
1736 | optional: | |
1737 | 6. A = B | . ==> A = [B]. | |
1738 | 7. A = | B . ==> A = [B]. | |
1739 | ||
1740 | factoration: | |
1741 | 8. A = B C | B D. ==> A = B (C | D). | |
1742 | 9. A = C B | D B. ==> A = (C | D) B. | |
1743 | 10. A = B C E | B D E. ==> A = B (C | D) E. | |
1744 | ||
1745 | The above optimizations are specially useful when `ebnf-syntax' is `yacc'." | |
1746 | :type 'boolean | |
1747 | :group 'ebnf-optimization) | |
1748 | ||
1749 | \f | |
1750 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
1751 | ;; Customization | |
1752 | ||
1753 | ||
1754 | ;;;###autoload | |
1755 | (defun ebnf-customize () | |
1756 | "Customization for ebnf group." | |
1757 | (interactive) | |
1758 | (customize-group 'ebnf2ps)) | |
1759 | ||
1760 | \f | |
1761 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
1762 | ;; User commands | |
1763 | ||
1764 | ||
1765 | ;;;###autoload | |
1766 | (defun ebnf-print-buffer (&optional filename) | |
ab3256ed | 1767 | "Generate and print a PostScript syntactic chart image of the buffer. |
984ae001 GM |
1768 | |
1769 | When called with a numeric prefix argument (C-u), prompts the user for | |
1770 | the name of a file to save the PostScript image in, instead of sending | |
1771 | it to the printer. | |
1772 | ||
1773 | More specifically, the FILENAME argument is treated as follows: if it | |
1774 | is nil, send the image to the printer. If FILENAME is a string, save | |
1775 | the PostScript image in a file with that name. If FILENAME is a | |
1776 | number, prompt the user for the name of the file to save in." | |
1777 | (interactive (list (ps-print-preprint current-prefix-arg))) | |
1778 | (ebnf-print-region (point-min) (point-max) filename)) | |
1779 | ||
1780 | ||
1781 | ;;;###autoload | |
1782 | (defun ebnf-print-region (from to &optional filename) | |
ab3256ed | 1783 | "Generate and print a PostScript syntactic chart image of the region. |
984ae001 GM |
1784 | Like `ebnf-print-buffer', but prints just the current region." |
1785 | (interactive (list (point) (mark) (ps-print-preprint current-prefix-arg))) | |
1786 | (run-hooks 'ebnf-hook) | |
1787 | (or (ebnf-spool-region from to) | |
1788 | (ps-do-despool filename))) | |
1789 | ||
1790 | ||
1791 | ;;;###autoload | |
1792 | (defun ebnf-spool-buffer () | |
ab3256ed | 1793 | "Generate and spool a PostScript syntactic chart image of the buffer. |
984ae001 GM |
1794 | Like `ebnf-print-buffer' except that the PostScript image is saved in a |
1795 | local buffer to be sent to the printer later. | |
1796 | ||
1797 | Use the command `ebnf-despool' to send the spooled images to the printer." | |
1798 | (interactive) | |
1799 | (ebnf-spool-region (point-min) (point-max))) | |
1800 | ||
1801 | ||
1802 | ;;;###autoload | |
1803 | (defun ebnf-spool-region (from to) | |
ab3256ed | 1804 | "Generate a PostScript syntactic chart image of the region and spool locally. |
984ae001 GM |
1805 | Like `ebnf-spool-buffer', but spools just the current region. |
1806 | ||
1807 | Use the command `ebnf-despool' to send the spooled images to the printer." | |
1808 | (interactive "r") | |
1809 | (ebnf-generate-region from to 'ebnf-generate)) | |
1810 | ||
1811 | ||
1812 | ;;;###autoload | |
1813 | (defun ebnf-eps-buffer () | |
ab3256ed | 1814 | "Generate a PostScript syntactic chart image of the buffer in a EPS file. |
984ae001 GM |
1815 | |
1816 | Indeed, for each production is generated a EPS file. | |
1817 | The EPS file name has the following form: | |
1818 | ||
1819 | <PREFIX><PRODUCTION>.eps | |
1820 | ||
1821 | <PREFIX> is given by variable `ebnf-eps-prefix'. | |
1822 | The default value is \"ebnf--\". | |
1823 | ||
1824 | <PRODUCTION> is the production name. | |
1825 | The production name is mapped to form a valid file name. | |
1826 | For example, the production name \"A/B + C\" is mapped to | |
1827 | \"A_B_+_C\" and the EPS file name used is \"ebnf--A_B_+_C.eps\". | |
1828 | ||
1829 | WARNING: It's *NOT* asked any confirmation to override an existing file." | |
1830 | (interactive) | |
1831 | (ebnf-eps-region (point-min) (point-max))) | |
1832 | ||
1833 | ||
1834 | ;;;###autoload | |
1835 | (defun ebnf-eps-region (from to) | |
ab3256ed | 1836 | "Generate a PostScript syntactic chart image of the region in a EPS file. |
984ae001 GM |
1837 | |
1838 | Indeed, for each production is generated a EPS file. | |
1839 | The EPS file name has the following form: | |
1840 | ||
1841 | <PREFIX><PRODUCTION>.eps | |
1842 | ||
1843 | <PREFIX> is given by variable `ebnf-eps-prefix'. | |
1844 | The default value is \"ebnf--\". | |
1845 | ||
1846 | <PRODUCTION> is the production name. | |
1847 | The production name is mapped to form a valid file name. | |
1848 | For example, the production name \"A/B + C\" is mapped to | |
1849 | \"A_B_+_C\" and the EPS file name used is \"ebnf--A_B_+_C.eps\". | |
1850 | ||
1851 | WARNING: It's *NOT* asked any confirmation to override an existing file." | |
1852 | (interactive "r") | |
1853 | (let ((ebnf-eps-executing t)) | |
1854 | (ebnf-generate-region from to 'ebnf-generate-eps))) | |
1855 | ||
1856 | ||
1857 | ;;;###autoload | |
1858 | (defalias 'ebnf-despool 'ps-despool) | |
1859 | ||
1860 | ||
1861 | ;;;###autoload | |
1862 | (defun ebnf-syntax-buffer () | |
ab3256ed | 1863 | "Does a syntactic analysis of the current buffer." |
984ae001 GM |
1864 | (interactive) |
1865 | (ebnf-syntax-region (point-min) (point-max))) | |
1866 | ||
1867 | ||
1868 | ;;;###autoload | |
1869 | (defun ebnf-syntax-region (from to) | |
ab3256ed | 1870 | "Does a syntactic analysis of a region." |
984ae001 GM |
1871 | (interactive "r") |
1872 | (ebnf-generate-region from to nil)) | |
1873 | ||
1874 | \f | |
1875 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
1876 | ;; Utilities | |
1877 | ||
1878 | ||
1879 | ;;;###autoload | |
1880 | (defun ebnf-setup () | |
1881 | "Return the current ebnf2ps setup." | |
1882 | (format | |
1883 | " | |
6a5275dc GM |
1884 | ;;; ebnf2ps.el version %s |
1885 | ||
984ae001 GM |
1886 | \(setq ebnf-special-font %s |
1887 | ebnf-special-shape %s | |
1888 | ebnf-special-shadow %S | |
1889 | ebnf-special-border-width %S | |
1890 | ebnf-special-border-color %S | |
1891 | ebnf-except-font %s | |
1892 | ebnf-except-shape %s | |
1893 | ebnf-except-shadow %S | |
1894 | ebnf-except-border-width %S | |
1895 | ebnf-except-border-color %S | |
1896 | ebnf-repeat-font %s | |
1897 | ebnf-repeat-shape %s | |
1898 | ebnf-repeat-shadow %S | |
1899 | ebnf-repeat-border-width %S | |
1900 | ebnf-repeat-border-color %S | |
1901 | ebnf-terminal-regexp %S | |
1902 | ebnf-case-fold-search %S | |
1903 | ebnf-terminal-font %s | |
1904 | ebnf-terminal-shape %s | |
1905 | ebnf-terminal-shadow %S | |
1906 | ebnf-terminal-border-width %S | |
1907 | ebnf-terminal-border-color %S | |
1908 | ebnf-non-terminal-font %s | |
1909 | ebnf-non-terminal-shape %s | |
1910 | ebnf-non-terminal-shadow %S | |
1911 | ebnf-non-terminal-border-width %S | |
1912 | ebnf-non-terminal-border-color %S | |
1913 | ebnf-sort-production %s | |
1914 | ebnf-production-font %s | |
1915 | ebnf-arrow-shape %s | |
1916 | ebnf-chart-shape %s | |
1917 | ebnf-user-arrow %s | |
1918 | ebnf-horizontal-orientation %S | |
1919 | ebnf-horizontal-max-height %S | |
1920 | ebnf-production-horizontal-space %S | |
1921 | ebnf-production-vertical-space %S | |
1922 | ebnf-justify-sequence %s | |
1923 | ebnf-lex-comment-char ?\\%03o | |
1924 | ebnf-lex-eop-char ?\\%03o | |
1925 | ebnf-syntax %s | |
1926 | ebnf-iso-alternative-p %S | |
1927 | ebnf-iso-normalize-p %S | |
1928 | ebnf-eps-prefix %S | |
1929 | ebnf-entry-percentage %S | |
1930 | ebnf-color-p %S | |
1931 | ebnf-line-width %S | |
1932 | ebnf-line-color %S | |
1933 | ebnf-debug-ps %S | |
1934 | ebnf-use-float-format %S | |
1935 | ebnf-yac-ignore-error-recovery %S | |
1936 | ebnf-ignore-empty-rule %S | |
1937 | ebnf-optimize %S) | |
6a5275dc GM |
1938 | |
1939 | ;;; ebnf2ps.el - end of settings | |
984ae001 | 1940 | " |
6a5275dc | 1941 | ebnf-version |
984ae001 GM |
1942 | (ps-print-quote ebnf-special-font) |
1943 | (ps-print-quote ebnf-special-shape) | |
1944 | ebnf-special-shadow | |
1945 | ebnf-special-border-width | |
1946 | ebnf-special-border-color | |
1947 | (ps-print-quote ebnf-except-font) | |
1948 | (ps-print-quote ebnf-except-shape) | |
1949 | ebnf-except-shadow | |
1950 | ebnf-except-border-width | |
1951 | ebnf-except-border-color | |
1952 | (ps-print-quote ebnf-repeat-font) | |
1953 | (ps-print-quote ebnf-repeat-shape) | |
1954 | ebnf-repeat-shadow | |
1955 | ebnf-repeat-border-width | |
1956 | ebnf-repeat-border-color | |
1957 | ebnf-terminal-regexp | |
1958 | ebnf-case-fold-search | |
1959 | (ps-print-quote ebnf-terminal-font) | |
1960 | (ps-print-quote ebnf-terminal-shape) | |
1961 | ebnf-terminal-shadow | |
1962 | ebnf-terminal-border-width | |
1963 | ebnf-terminal-border-color | |
1964 | (ps-print-quote ebnf-non-terminal-font) | |
1965 | (ps-print-quote ebnf-non-terminal-shape) | |
1966 | ebnf-non-terminal-shadow | |
1967 | ebnf-non-terminal-border-width | |
1968 | ebnf-non-terminal-border-color | |
1969 | (ps-print-quote ebnf-sort-production) | |
1970 | (ps-print-quote ebnf-production-font) | |
1971 | (ps-print-quote ebnf-arrow-shape) | |
1972 | (ps-print-quote ebnf-chart-shape) | |
1973 | (ps-print-quote ebnf-user-arrow) | |
1974 | ebnf-horizontal-orientation | |
1975 | ebnf-horizontal-max-height | |
1976 | ebnf-production-horizontal-space | |
1977 | ebnf-production-vertical-space | |
1978 | (ps-print-quote ebnf-justify-sequence) | |
1979 | ebnf-lex-comment-char | |
1980 | ebnf-lex-eop-char | |
1981 | (ps-print-quote ebnf-syntax) | |
1982 | ebnf-iso-alternative-p | |
1983 | ebnf-iso-normalize-p | |
1984 | ebnf-eps-prefix | |
1985 | ebnf-entry-percentage | |
1986 | ebnf-color-p | |
1987 | ebnf-line-width | |
1988 | ebnf-line-color | |
1989 | ebnf-debug-ps | |
1990 | ebnf-use-float-format | |
1991 | ebnf-yac-ignore-error-recovery | |
1992 | ebnf-ignore-empty-rule | |
1993 | ebnf-optimize)) | |
1994 | ||
1995 | \f | |
1996 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
1997 | ;; Style variables | |
1998 | ||
1999 | ||
2000 | (defvar ebnf-stack-style nil | |
2001 | "Used in functions `ebnf-reset-style', `ebnf-push-style' and | |
2002 | `ebnf-pop-style'.") | |
2003 | ||
2004 | ||
2005 | (defvar ebnf-current-style 'default | |
2006 | "Used in functions `ebnf-apply-style' and `ebnf-push-style'.") | |
2007 | ||
2008 | ||
2009 | (defconst ebnf-style-custom-list | |
2010 | '(ebnf-special-font | |
2011 | ebnf-special-shape | |
2012 | ebnf-special-shadow | |
2013 | ebnf-special-border-width | |
2014 | ebnf-special-border-color | |
2015 | ebnf-except-font | |
2016 | ebnf-except-shape | |
2017 | ebnf-except-shadow | |
2018 | ebnf-except-border-width | |
2019 | ebnf-except-border-color | |
2020 | ebnf-repeat-font | |
2021 | ebnf-repeat-shape | |
2022 | ebnf-repeat-shadow | |
2023 | ebnf-repeat-border-width | |
2024 | ebnf-repeat-border-color | |
2025 | ebnf-terminal-regexp | |
2026 | ebnf-case-fold-search | |
2027 | ebnf-terminal-font | |
2028 | ebnf-terminal-shape | |
2029 | ebnf-terminal-shadow | |
2030 | ebnf-terminal-border-width | |
2031 | ebnf-terminal-border-color | |
2032 | ebnf-non-terminal-font | |
2033 | ebnf-non-terminal-shape | |
2034 | ebnf-non-terminal-shadow | |
2035 | ebnf-non-terminal-border-width | |
2036 | ebnf-non-terminal-border-color | |
2037 | ebnf-sort-production | |
2038 | ebnf-production-font | |
2039 | ebnf-arrow-shape | |
2040 | ebnf-chart-shape | |
2041 | ebnf-user-arrow | |
2042 | ebnf-horizontal-orientation | |
2043 | ebnf-horizontal-max-height | |
2044 | ebnf-production-horizontal-space | |
2045 | ebnf-production-vertical-space | |
2046 | ebnf-justify-sequence | |
2047 | ebnf-lex-comment-char | |
2048 | ebnf-lex-eop-char | |
2049 | ebnf-syntax | |
2050 | ebnf-iso-alternative-p | |
2051 | ebnf-iso-normalize-p | |
2052 | ebnf-eps-prefix | |
2053 | ebnf-entry-percentage | |
2054 | ebnf-color-p | |
2055 | ebnf-line-width | |
2056 | ebnf-line-color | |
2057 | ebnf-debug-ps | |
2058 | ebnf-use-float-format | |
2059 | ebnf-yac-ignore-error-recovery | |
2060 | ebnf-ignore-empty-rule | |
2061 | ebnf-optimize) | |
2062 | "List of valid symbol custom variable.") | |
2063 | ||
2064 | ||
2065 | (defvar ebnf-style-database | |
2066 | '(;; EBNF default | |
2067 | (default | |
2068 | nil | |
2069 | (ebnf-special-font . '(7 Courier "Black" "Gray95" bold italic)) | |
2070 | (ebnf-special-shape . 'bevel) | |
2071 | (ebnf-special-shadow . nil) | |
2072 | (ebnf-special-border-width . 0.5) | |
2073 | (ebnf-special-border-color . "Black") | |
2074 | (ebnf-except-font . '(7 Courier "Black" "Gray90" bold italic)) | |
2075 | (ebnf-except-shape . 'bevel) | |
2076 | (ebnf-except-shadow . nil) | |
2077 | (ebnf-except-border-width . 0.25) | |
2078 | (ebnf-except-border-color . "Black") | |
2079 | (ebnf-repeat-font . '(7 Courier "Black" "Gray85" bold italic)) | |
2080 | (ebnf-repeat-shape . 'bevel) | |
2081 | (ebnf-repeat-shadow . nil) | |
2082 | (ebnf-repeat-border-width . 0.0) | |
2083 | (ebnf-repeat-border-color . "Black") | |
2084 | (ebnf-terminal-regexp . nil) | |
2085 | (ebnf-case-fold-search . nil) | |
2086 | (ebnf-terminal-font . '(7 Courier "Black" "White")) | |
2087 | (ebnf-terminal-shape . 'miter) | |
2088 | (ebnf-terminal-shadow . nil) | |
2089 | (ebnf-terminal-border-width . 1.0) | |
2090 | (ebnf-terminal-border-color . "Black") | |
2091 | (ebnf-non-terminal-font . '(7 Helvetica "Black" "White")) | |
2092 | (ebnf-non-terminal-shape . 'round) | |
2093 | (ebnf-non-terminal-shadow . nil) | |
2094 | (ebnf-non-terminal-border-width . 1.0) | |
2095 | (ebnf-non-terminal-border-color . "Black") | |
2096 | (ebnf-sort-production . nil) | |
2097 | (ebnf-production-font . '(10 Helvetica "Black" "White" bold)) | |
2098 | (ebnf-arrow-shape . 'hollow) | |
2099 | (ebnf-chart-shape . 'round) | |
2100 | (ebnf-user-arrow . nil) | |
2101 | (ebnf-horizontal-orientation . nil) | |
2102 | (ebnf-horizontal-max-height . nil) | |
2103 | (ebnf-production-horizontal-space . 0.0) | |
2104 | (ebnf-production-vertical-space . 0.0) | |
2105 | (ebnf-justify-sequence . 'center) | |
2106 | (ebnf-lex-comment-char . ?\;) | |
2107 | (ebnf-lex-eop-char . ?.) | |
2108 | (ebnf-syntax . 'ebnf) | |
2109 | (ebnf-iso-alternative-p . nil) | |
2110 | (ebnf-iso-normalize-p . nil) | |
2111 | (ebnf-eps-prefix . "ebnf--") | |
2112 | (ebnf-entry-percentage . 0.5) | |
2113 | (ebnf-color-p . (or (fboundp 'x-color-values) ; Emacs | |
2114 | (fboundp 'color-instance-rgb-components))) ; XEmacs | |
2115 | (ebnf-line-width . 1.0) | |
2116 | (ebnf-line-color . "Black") | |
2117 | (ebnf-debug-ps . nil) | |
2118 | (ebnf-use-float-format . t) | |
2119 | (ebnf-yac-ignore-error-recovery . nil) | |
2120 | (ebnf-ignore-empty-rule . nil) | |
2121 | (ebnf-optimize . nil)) | |
2122 | ;; Happy EBNF default | |
2123 | (happy | |
2124 | default | |
2125 | (ebnf-justify-sequence . 'left) | |
2126 | (ebnf-lex-comment-char . ?\#) | |
2127 | (ebnf-lex-eop-char . ?\;)) | |
2128 | ;; ISO EBNF default | |
2129 | (iso-ebnf | |
2130 | default | |
2131 | (ebnf-syntax . 'iso-ebnf)) | |
2132 | ;; Yacc/Bison default | |
2133 | (yacc | |
2134 | default | |
2135 | (ebnf-syntax . 'yacc)) | |
2136 | ) | |
2137 | "Style database. | |
2138 | ||
2139 | Each element has the following form: | |
2140 | ||
2141 | (CUSTOM INHERITS (VAR . VALUE)...) | |
2142 | ||
2143 | CUSTOM is a symbol name style. | |
2144 | INHERITS is a symbol name style from which the current style inherits the | |
2145 | context. If INHERITS is nil, means that there is no inheritance. | |
b685181e GM |
2146 | VAR is a valid ebnf2ps symbol custom variable. See `ebnf-style-custom-list' |
2147 | for valid symbol variable. | |
984ae001 GM |
2148 | VALUE is a sexp which it'll be evaluated to set the value to VAR. So, don't |
2149 | forget to quote symbols and constant lists. See `default' style for an | |
2150 | example. | |
2151 | ||
2152 | Don't handle this variable directly. Use functions `ebnf-insert-style' and | |
2153 | `ebnf-merge-style'.") | |
2154 | ||
2155 | \f | |
2156 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
2157 | ;; Style commands | |
2158 | ||
2159 | ||
2160 | ;;;###autoload | |
2161 | (defun ebnf-insert-style (name inherits &rest values) | |
2162 | "Insert a new style NAME with inheritance INHERITS and values VALUES." | |
2163 | (interactive) | |
2164 | (and (assoc name ebnf-style-database) | |
2165 | (error "Style name already exists: %s" name)) | |
2166 | (or (assoc inherits ebnf-style-database) | |
2167 | (error "Style inheritance name does'nt exist: %s" inherits)) | |
2168 | (setq ebnf-style-database | |
2169 | (cons (cons name (cons inherits (ebnf-check-style-values values))) | |
2170 | ebnf-style-database))) | |
2171 | ||
2172 | ||
2173 | ;;;###autoload | |
2174 | (defun ebnf-merge-style (name &rest values) | |
2175 | "Merge values of style NAME with style VALUES." | |
2176 | (interactive) | |
2177 | (let ((style (or (assoc name ebnf-style-database) | |
2178 | (error "Style name does'nt exist: %s" name))) | |
2179 | (merge (ebnf-check-style-values values)) | |
2180 | val elt new check) | |
2181 | ;; modify value of existing variables | |
2182 | (setq val (nthcdr 2 style)) | |
2183 | (while merge | |
2184 | (setq check (car merge) | |
2185 | merge (cdr merge) | |
2186 | elt (assoc (car check) val)) | |
2187 | (if elt | |
2188 | (setcdr elt (cdr check)) | |
2189 | (setq new (cons check new)))) | |
2190 | ;; insert new variables | |
2191 | (nconc style (nreverse new)))) | |
2192 | ||
2193 | ||
2194 | ;;;###autoload | |
2195 | (defun ebnf-apply-style (style) | |
2196 | "Set STYLE to current style. | |
2197 | ||
2198 | It returns the old style symbol." | |
2199 | (interactive) | |
2200 | (prog1 | |
2201 | ebnf-current-style | |
2202 | (and (ebnf-apply-style1 style) | |
2203 | (setq ebnf-current-style style)))) | |
2204 | ||
2205 | ||
2206 | ;;;###autoload | |
2207 | (defun ebnf-reset-style (&optional style) | |
2208 | "Reset current style. | |
2209 | ||
2210 | It returns the old style symbol." | |
2211 | (interactive) | |
2212 | (setq ebnf-stack-style nil) | |
2213 | (ebnf-apply-style (or style 'default))) | |
2214 | ||
2215 | ||
2216 | ;;;###autoload | |
2217 | (defun ebnf-push-style (&optional style) | |
2218 | "Push the current style and set STYLE to current style. | |
2219 | ||
2220 | It returns the old style symbol." | |
2221 | (interactive) | |
2222 | (prog1 | |
2223 | ebnf-current-style | |
2224 | (setq ebnf-stack-style (cons ebnf-current-style ebnf-stack-style)) | |
2225 | (and style | |
2226 | (ebnf-apply-style style)))) | |
2227 | ||
2228 | ||
2229 | ;;;###autoload | |
2230 | (defun ebnf-pop-style () | |
2231 | "Pop a style and set it to current style. | |
2232 | ||
2233 | It returns the old style symbol." | |
2234 | (interactive) | |
2235 | (prog1 | |
2236 | (ebnf-apply-style (car ebnf-stack-style)) | |
2237 | (setq ebnf-stack-style (cdr ebnf-stack-style)))) | |
2238 | ||
2239 | ||
2240 | (defun ebnf-apply-style1 (style) | |
2241 | (let ((value (cdr (assoc style ebnf-style-database)))) | |
2242 | (prog1 | |
2243 | value | |
2244 | (and (car value) (ebnf-apply-style1 (car value))) | |
2245 | (while (setq value (cdr value)) | |
2246 | (set (caar value) (eval (cdar value))))))) | |
2247 | ||
2248 | ||
2249 | (defun ebnf-check-style-values (values) | |
2250 | (let (style) | |
2251 | (while values | |
2252 | (and (memq (car values) ebnf-style-custom-list) | |
2253 | (setq style (cons (car values) style))) | |
2254 | (setq values (cdr values))) | |
2255 | (nreverse style))) | |
2256 | ||
2257 | \f | |
2258 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
2259 | ;; Internal variables | |
2260 | ||
2261 | ||
984ae001 GM |
2262 | (defvar ebnf-eps-buffer-name " *EPS*") |
2263 | (defvar ebnf-parser-func nil) | |
2264 | (defvar ebnf-eps-executing nil) | |
2265 | (defvar ebnf-eps-upper-x 0.0) | |
2266 | (make-variable-buffer-local 'ebnf-eps-upper-x) | |
2267 | (defvar ebnf-eps-upper-y 0.0) | |
2268 | (make-variable-buffer-local 'ebnf-eps-upper-y) | |
2269 | (defvar ebnf-eps-prod-width 0.0) | |
2270 | (make-variable-buffer-local 'ebnf-eps-prod-width) | |
2271 | (defvar ebnf-eps-max-height 0.0) | |
2272 | (make-variable-buffer-local 'ebnf-eps-max-height) | |
2273 | (defvar ebnf-eps-max-width 0.0) | |
2274 | (make-variable-buffer-local 'ebnf-eps-max-width) | |
2275 | ||
2276 | ||
2277 | (defvar ebnf-eps-context nil | |
2278 | "List of EPS file name during parsing. | |
2279 | ||
2280 | See section \"Actions in Comments\" in ebnf2ps documentation.") | |
2281 | ||
2282 | ||
2283 | (defvar ebnf-eps-production-list nil | |
2284 | "Alist associating production name with EPS file name list. | |
2285 | ||
2286 | Each element has the following form: | |
2287 | ||
2288 | (PRODUCTION EPS-FILENAME...) | |
2289 | ||
2290 | PRODUCTION is the production name. | |
2291 | EPS-FILENAME is the EPS file name. | |
2292 | ||
2293 | It's generated during parsing and used during EPS generation. | |
2294 | ||
2295 | See `ebnf-eps-context' and section \"Actions in Comments\" in ebnf2ps | |
2296 | documentation.") | |
2297 | ||
2298 | ||
2299 | (defconst ebnf-arrow-shape-alist | |
2300 | '((none . 0) | |
2301 | (semi-up . 1) | |
2302 | (semi-down . 2) | |
2303 | (simple . 3) | |
2304 | (transparent . 4) | |
2305 | (hollow . 5) | |
2306 | (full . 6) | |
2307 | (user . 7)) | |
2308 | "Alist associating values for `ebnf-arrow-shape'. | |
2309 | ||
2310 | See documentation for `ebnf-arrow-shape'.") | |
2311 | ||
2312 | ||
2313 | (defconst ebnf-terminal-shape-alist | |
2314 | '((miter . 0) | |
2315 | (round . 1) | |
2316 | (bevel . 2)) | |
2317 | "Alist associating values from `ebnf-terminal-shape' to a bit vector. | |
2318 | ||
2319 | See documentation for `ebnf-terminal-shape', `ebnf-non-terminal-shape' and | |
2320 | `ebnf-chart-shape'.") | |
2321 | ||
2322 | ||
2323 | (defvar ebnf-limit nil) | |
2324 | (defvar ebnf-action nil) | |
2325 | (defvar ebnf-action-list nil) | |
2326 | ||
2327 | ||
2328 | (defvar ebnf-default-p nil) | |
2329 | ||
2330 | ||
2331 | (defvar ebnf-font-height-P 0) | |
2332 | (defvar ebnf-font-height-T 0) | |
2333 | (defvar ebnf-font-height-NT 0) | |
2334 | (defvar ebnf-font-height-S 0) | |
2335 | (defvar ebnf-font-height-E 0) | |
2336 | (defvar ebnf-font-height-R 0) | |
2337 | (defvar ebnf-font-width-P 0) | |
2338 | (defvar ebnf-font-width-T 0) | |
2339 | (defvar ebnf-font-width-NT 0) | |
2340 | (defvar ebnf-font-width-S 0) | |
2341 | (defvar ebnf-font-width-E 0) | |
2342 | (defvar ebnf-font-width-R 0) | |
2343 | (defvar ebnf-space-T 0) | |
2344 | (defvar ebnf-space-NT 0) | |
2345 | (defvar ebnf-space-S 0) | |
2346 | (defvar ebnf-space-E 0) | |
2347 | (defvar ebnf-space-R 0) | |
2348 | ||
2349 | ||
2350 | (defvar ebnf-basic-width 0) | |
2351 | (defvar ebnf-basic-height 0) | |
2352 | (defvar ebnf-vertical-space 0) | |
2353 | (defvar ebnf-horizontal-space 0) | |
2354 | ||
2355 | ||
2356 | (defvar ebnf-settings nil) | |
2357 | (defvar ebnf-fonts-required nil) | |
2358 | ||
2359 | ||
2360 | (defconst ebnf-debug | |
2361 | " | |
2362 | % === begin EBNF procedures to help debugging | |
2363 | ||
2364 | % Mark visually current point: string debug | |
2365 | /debug | |
2366 | {/-s- exch def | |
2367 | currentpoint | |
2368 | gsave -s- show grestore | |
2369 | gsave | |
2370 | 20 20 rlineto | |
2371 | 0 -40 rlineto | |
2372 | -40 40 rlineto | |
2373 | 0 -40 rlineto | |
2374 | 20 20 rlineto | |
2375 | stroke | |
2376 | grestore | |
2377 | moveto | |
2378 | }def | |
2379 | ||
2380 | % Show number value: number string debug-number | |
2381 | /debug-number | |
2382 | {gsave | |
2383 | 20 0 rmoveto show ([) show 60 string cvs show (]) show | |
2384 | grestore | |
2385 | }def | |
2386 | ||
2387 | % === end EBNF procedures to help debugging | |
2388 | ||
2389 | " | |
2390 | "This is intended to help debugging PostScript programming.") | |
2391 | ||
2392 | ||
2393 | (defconst ebnf-prologue | |
2394 | " | |
2395 | % === begin EBNF engine | |
2396 | ||
2397 | % --- Basic Definitions | |
2398 | ||
2399 | /fS F | |
2400 | /SpaceS FontHeight 0.5 mul def | |
2401 | /HeightS FontHeight FontHeight add def | |
2402 | ||
2403 | /fE F | |
2404 | /SpaceE FontHeight 0.5 mul def | |
2405 | /HeightE FontHeight FontHeight add def | |
2406 | ||
2407 | /fR F | |
2408 | /SpaceR FontHeight 0.5 mul def | |
2409 | /HeightR FontHeight FontHeight add def | |
2410 | ||
2411 | /fT F | |
2412 | /SpaceT FontHeight 0.5 mul def | |
2413 | /HeightT FontHeight FontHeight add def | |
2414 | ||
2415 | /fNT F | |
2416 | /SpaceNT FontHeight 0.5 mul def | |
2417 | /HeightNT FontHeight FontHeight add def | |
2418 | ||
2419 | /T HeightT HeightNT add 0.5 mul def | |
2420 | /hT T 0.5 mul def | |
2421 | /hT2 hT 0.5 mul def | |
2422 | /hT4 hT 0.25 mul def | |
2423 | ||
2424 | /Er 0.1 def % Error factor | |
2425 | ||
2426 | ||
2427 | /c{currentpoint}bind def | |
2428 | /xyi{/xi c /yi exch def def}bind def | |
2429 | /xyo{/xo c /yo exch def def}bind def | |
2430 | /xyp{/xp c /yp exch def def}bind def | |
2431 | /xyt{/xt c /yt exch def def}bind def | |
2432 | ||
2433 | % vertical movement: x y height vm | |
2434 | /vm{add moveto}bind def | |
2435 | ||
2436 | % horizontal movement: x y width hm | |
2437 | /hm{3 -1 roll exch add exch moveto}bind def | |
2438 | ||
2439 | % set color: [R G B] SetRGB | |
2440 | /SetRGB{aload pop setrgbcolor}bind def | |
2441 | ||
2442 | % filling gray area: gray-scale FillGray | |
2443 | /FillGray{gsave setgray fill grestore}bind def | |
2444 | ||
2445 | % filling color area: [R G B] FillRGB | |
2446 | /FillRGB{gsave SetRGB fill grestore}bind def | |
2447 | ||
2448 | /Stroke{LineWidth setlinewidth LineColor SetRGB stroke}bind def | |
2449 | /StrokeShape{borderwidth setlinewidth bordercolor SetRGB stroke}bind def | |
2450 | /Gstroke{gsave Stroke grestore}bind def | |
2451 | ||
2452 | % Empty Line: width EL | |
2453 | /EL{0 rlineto Gstroke}bind def | |
2454 | ||
2455 | % --- Arrows | |
2456 | ||
2457 | /Down{hT2 neg hT4 neg rlineto}bind def | |
2458 | ||
2459 | /Arrow | |
2460 | {hT2 neg hT4 rmoveto | |
2461 | hT2 hT4 neg rlineto | |
2462 | Down | |
2463 | }bind def | |
2464 | ||
2465 | /ArrowPath{c newpath moveto Arrow closepath}bind def | |
2466 | ||
2467 | %>Right Arrow: RA | |
2468 | % \\ | |
2469 | % *---+ | |
2470 | % / | |
2471 | /RA-vector | |
2472 | [{} % 0 - none | |
2473 | {hT2 neg hT4 rlineto} % 1 - semi-up | |
2474 | {Down} % 2 - semi-down | |
2475 | {Arrow} % 3 - simple | |
2476 | {Gstroke ArrowPath} % 4 - transparent | |
2477 | {Gstroke ArrowPath 1 FillGray} % 5 - hollow | |
2478 | {Gstroke ArrowPath LineColor FillRGB} % 6 - full | |
2479 | {Gstroke gsave UserArrow grestore} % 7 - user | |
2480 | ]def | |
2481 | ||
2482 | /RA | |
2483 | {hT 0 rlineto | |
2484 | c | |
2485 | RA-vector ArrowShape get exec | |
2486 | Gstroke | |
2487 | moveto | |
2488 | }def | |
2489 | ||
2490 | % rotation DrawArrow | |
2491 | /DrawArrow | |
2492 | {gsave | |
2493 | 0 0 translate | |
2494 | rotate | |
2495 | RA | |
2496 | c | |
2497 | grestore | |
2498 | rmoveto | |
2499 | }def | |
2500 | ||
2501 | %>Left Arrow: LA | |
2502 | % / | |
2503 | % +---* | |
2504 | % \\ | |
2505 | /LA{180 DrawArrow}def | |
2506 | ||
2507 | %>Up Arrow: UA | |
2508 | % + | |
2509 | % /|\\ | |
2510 | % | | |
2511 | % * | |
2512 | /UA{90 DrawArrow}def | |
2513 | ||
2514 | %>Down Arrow: DA | |
2515 | % * | |
2516 | % | | |
2517 | % \\|/ | |
2518 | % + | |
2519 | /DA{270 DrawArrow}def | |
2520 | ||
2521 | % --- Corners | |
2522 | ||
2523 | %>corner Right Descendent: height arrow corner_RD | |
2524 | % _ | arrow | |
2525 | % / height > 0 | 0 - none | |
2526 | % | | 1 - right | |
2527 | % * ---------- | 2 - left | |
2528 | % | | 3 - vertical | |
2529 | % \\ height < 0 | | |
2530 | % - | | |
2531 | /cRD0-vector | |
2532 | [% 0 - none | |
2533 | {0 h rlineto | |
2534 | hT 0 rlineto} | |
2535 | % 1 - right | |
2536 | {0 h rlineto | |
2537 | RA} | |
2538 | % 2 - left | |
2539 | {hT 0 rmoveto xyi | |
2540 | LA | |
2541 | 0 h neg rlineto | |
2542 | xi yi moveto} | |
2543 | % 3 - vertical | |
2544 | {hT h rmoveto xyi | |
2545 | hT neg 0 rlineto | |
2546 | h 0 gt{DA}{UA}ifelse | |
2547 | xi yi moveto} | |
2548 | ]def | |
2549 | ||
2550 | /cRD-vector | |
2551 | [{cRD0-vector arrow get exec} % 0 - miter | |
2552 | {0 0 0 h hT h rcurveto} % 1 - rounded | |
2553 | {hT h rlineto} % 2 - bevel | |
2554 | ]def | |
2555 | ||
2556 | /corner_RD | |
2557 | {/arrow exch def /h exch def | |
2558 | cRD-vector ChartShape get exec | |
2559 | Gstroke | |
2560 | }def | |
2561 | ||
2562 | %>corner Right Ascendent: height arrow corner_RA | |
2563 | % | arrow | |
2564 | % | height > 0 | 0 - none | |
2565 | % / | 1 - right | |
2566 | % *- ---------- | 2 - left | |
2567 | % \\ | 3 - vertical | |
2568 | % | height < 0 | | |
2569 | % | | |
2570 | /cRA0-vector | |
2571 | [% 0 - none | |
2572 | {hT 0 rlineto | |
2573 | 0 h rlineto} | |
2574 | % 1 - right | |
2575 | {RA | |
2576 | 0 h rlineto} | |
2577 | % 2 - left | |
2578 | {hT h rmoveto xyi | |
2579 | 0 h neg rlineto | |
2580 | LA | |
2581 | xi yi moveto} | |
2582 | % 3 - vertical | |
2583 | {hT h rmoveto xyi | |
2584 | h 0 gt{DA}{UA}ifelse | |
2585 | hT neg 0 rlineto | |
2586 | xi yi moveto} | |
2587 | ]def | |
2588 | ||
2589 | /cRA-vector | |
2590 | [{cRA0-vector arrow get exec} % 0 - miter | |
2591 | {0 0 hT 0 hT h rcurveto} % 1 - rounded | |
2592 | {hT h rlineto} % 2 - bevel | |
2593 | ]def | |
2594 | ||
2595 | /corner_RA | |
2596 | {/arrow exch def /h exch def | |
2597 | cRA-vector ChartShape get exec | |
2598 | Gstroke | |
2599 | }def | |
2600 | ||
2601 | %>corner Left Descendent: height arrow corner_LD | |
2602 | % _ | arrow | |
2603 | % \\ height > 0 | 0 - none | |
2604 | % | | 1 - right | |
2605 | % * ---------- | 2 - left | |
2606 | % | | 3 - vertical | |
2607 | % / height < 0 | | |
2608 | % - | | |
2609 | /cLD0-vector | |
2610 | [% 0 - none | |
2611 | {0 h rlineto | |
2612 | hT neg 0 rlineto} | |
2613 | % 1 - right | |
2614 | {hT neg h rmoveto xyi | |
2615 | RA | |
2616 | 0 h neg rlineto | |
2617 | xi yi moveto} | |
2618 | % 2 - left | |
2619 | {0 h rlineto | |
2620 | LA} | |
2621 | % 3 - vertical | |
2622 | {hT neg h rmoveto xyi | |
2623 | hT 0 rlineto | |
2624 | h 0 gt{DA}{UA}ifelse | |
2625 | xi yi moveto} | |
2626 | ]def | |
2627 | ||
2628 | /cLD-vector | |
2629 | [{cLD0-vector arrow get exec} % 0 - miter | |
2630 | {0 0 0 h hT neg h rcurveto} % 1 - rounded | |
2631 | {hT neg h rlineto} % 2 - bevel | |
2632 | ]def | |
2633 | ||
2634 | /corner_LD | |
2635 | {/arrow exch def /h exch def | |
2636 | cLD-vector ChartShape get exec | |
2637 | Gstroke | |
2638 | }def | |
2639 | ||
2640 | %>corner Left Ascendent: height arrow corner_LA | |
2641 | % | arrow | |
2642 | % | height > 0 | 0 - none | |
2643 | % \\ | 1 - right | |
2644 | % -* ---------- | 2 - left | |
2645 | % / | 3 - vertical | |
2646 | % | height < 0 | | |
2647 | % | | |
2648 | /cLA0-vector | |
2649 | [% 0 - none | |
2650 | {hT neg 0 rlineto | |
2651 | 0 h rlineto} | |
2652 | % 1 - right | |
2653 | {hT neg h rmoveto xyi | |
2654 | 0 h neg rlineto | |
2655 | RA | |
2656 | xi yi moveto} | |
2657 | % 2 - left | |
2658 | {LA | |
2659 | 0 h rlineto} | |
2660 | % 3 - vertical | |
2661 | {hT neg h rmoveto xyi | |
2662 | h 0 gt{DA}{UA}ifelse | |
2663 | hT 0 rlineto | |
2664 | xi yi moveto} | |
2665 | ]def | |
2666 | ||
2667 | /cLA-vector | |
2668 | [{cLA0-vector arrow get exec} % 0 - miter | |
2669 | {0 0 hT neg 0 hT neg h rcurveto} % 1 - rounded | |
2670 | {hT neg h rlineto} % 2 - bevel | |
2671 | ]def | |
2672 | ||
2673 | /corner_LA | |
2674 | {/arrow exch def /h exch def | |
2675 | cLA-vector ChartShape get exec | |
2676 | Gstroke | |
2677 | }def | |
2678 | ||
2679 | % --- Flow Stuff | |
2680 | ||
2681 | % height prepare_height |- line_height corner_height corner_height | |
2682 | /prepare_height | |
2683 | {dup 0 gt | |
2684 | {T sub hT} | |
2685 | {T add hT neg}ifelse | |
2686 | dup | |
2687 | }def | |
2688 | ||
2689 | %>Left Alternative: height LAlt | |
2690 | % _ | |
2691 | % / | |
2692 | % | height > 0 | |
2693 | % | | |
2694 | % / | |
2695 | % *- ---------- | |
2696 | % \\ | |
2697 | % | | |
2698 | % | height < 0 | |
2699 | % \\ | |
2700 | % - | |
2701 | /LAlt | |
2702 | {dup 0 eq | |
2703 | {T exch rlineto} | |
2704 | {dup abs T lt | |
2705 | {0.5 mul dup | |
2706 | 1 corner_RA | |
2707 | 0 corner_RD} | |
2708 | {prepare_height | |
2709 | 1 corner_RA | |
2710 | exch 0 exch rlineto | |
2711 | 0 corner_RD | |
2712 | }ifelse | |
2713 | }ifelse | |
2714 | }def | |
2715 | ||
2716 | %>Left Loop: height LLoop | |
2717 | % _ | |
2718 | % / | |
2719 | % | height > 0 | |
2720 | % | | |
2721 | % \\ | |
2722 | % -* ---------- | |
2723 | % / | |
2724 | % | | |
2725 | % | height < 0 | |
2726 | % \\ | |
2727 | % - | |
2728 | /LLoop | |
2729 | {prepare_height | |
2730 | 3 corner_LA | |
2731 | exch 0 exch rlineto | |
2732 | 0 corner_RD | |
2733 | }def | |
2734 | ||
2735 | %>Right Alternative: height RAlt | |
2736 | % _ | |
2737 | % \\ | |
2738 | % | height > 0 | |
2739 | % | | |
2740 | % \\ | |
2741 | % -* ---------- | |
2742 | % / | |
2743 | % | | |
2744 | % | height < 0 | |
2745 | % / | |
2746 | % - | |
2747 | /RAlt | |
2748 | {dup 0 eq | |
2749 | {T neg exch rlineto} | |
2750 | {dup abs T lt | |
2751 | {0.5 mul dup | |
2752 | 1 corner_LA | |
2753 | 0 corner_LD} | |
2754 | {prepare_height | |
2755 | 1 corner_LA | |
2756 | exch 0 exch rlineto | |
2757 | 0 corner_LD | |
2758 | }ifelse | |
2759 | }ifelse | |
2760 | }def | |
2761 | ||
2762 | %>Right Loop: height RLoop | |
2763 | % _ | |
2764 | % \\ | |
2765 | % | height > 0 | |
2766 | % | | |
2767 | % / | |
2768 | % *- ---------- | |
2769 | % \\ | |
2770 | % | | |
2771 | % | height < 0 | |
2772 | % / | |
2773 | % - | |
2774 | /RLoop | |
2775 | {prepare_height | |
2776 | 1 corner_RA | |
2777 | exch 0 exch rlineto | |
2778 | 0 corner_LD | |
2779 | }def | |
2780 | ||
2781 | % --- Terminal, Non-terminal and Special Basics | |
2782 | ||
2783 | % string width prepare-width |- string | |
2784 | /prepare-width | |
2785 | {/width exch def | |
2786 | dup stringwidth pop space add space add width exch sub 0.5 mul | |
2787 | /w exch def | |
2788 | }def | |
2789 | ||
2790 | % string width begin-right | |
2791 | /begin-right | |
2792 | {xyo | |
2793 | prepare-width | |
2794 | w hT sub EL | |
2795 | RA | |
2796 | }def | |
2797 | ||
2798 | % end-right | |
2799 | /end-right | |
2800 | {xo width add Er add yo moveto | |
2801 | w Er add neg EL | |
2802 | xo yo moveto | |
2803 | }def | |
2804 | ||
2805 | % string width begin-left | |
2806 | /begin-left | |
2807 | {xyo | |
2808 | prepare-width | |
2809 | w EL | |
2810 | }def | |
2811 | ||
2812 | % end-left | |
2813 | /end-left | |
2814 | {xo width add Er add yo moveto | |
2815 | hT w sub Er add EL | |
2816 | LA | |
2817 | xo yo moveto | |
2818 | }def | |
2819 | ||
2820 | /ShapePath-vector | |
2821 | [% 0 - miter | |
2822 | {xx yy moveto | |
2823 | xx YY lineto | |
2824 | XX YY lineto | |
2825 | XX yy lineto} | |
2826 | % 1 - rounded | |
2827 | {/half YY yy sub 0.5 mul abs def | |
2828 | xx half add YY moveto | |
2829 | 0 0 half neg 0 half neg half neg rcurveto | |
2830 | 0 0 0 half neg half half neg rcurveto | |
2831 | XX xx sub abs half sub half sub 0 rlineto | |
2832 | 0 0 half 0 half half rcurveto | |
2833 | 0 0 0 half half neg half rcurveto} | |
2834 | % 2 - bevel | |
2835 | {/quarter YY yy sub 0.25 mul abs def | |
2836 | xx quarter add YY moveto | |
2837 | quarter neg quarter neg rlineto | |
2838 | 0 quarter quarter add neg rlineto | |
2839 | quarter quarter neg rlineto | |
2840 | XX xx sub abs quarter sub quarter sub 0 rlineto | |
2841 | quarter quarter rlineto | |
2842 | 0 quarter quarter add rlineto | |
2843 | quarter neg quarter rlineto} | |
2844 | ]def | |
2845 | ||
2846 | /doShapePath | |
2847 | {newpath | |
2848 | ShapePath-vector shape get exec | |
2849 | closepath | |
2850 | }def | |
2851 | ||
2852 | /doShapeShadow | |
2853 | {gsave | |
2854 | Xshadow Xshadow add Xshadow add | |
2855 | Yshadow Yshadow add Yshadow add translate | |
2856 | doShapePath | |
2857 | 0.9 FillGray | |
2858 | grestore | |
2859 | }def | |
2860 | ||
2861 | /doShape | |
2862 | {gsave | |
2863 | doShapePath | |
2864 | shapecolor FillRGB | |
2865 | StrokeShape | |
2866 | grestore | |
2867 | }def | |
2868 | ||
2869 | % string SBound |- string | |
2870 | /SBound | |
2871 | {/xx c dup /yy exch def | |
2872 | FontHeight add /YY exch def def | |
2873 | dup stringwidth pop xx add /XX exch def | |
2874 | Effect 8 and 0 ne | |
2875 | {/yy yy YShadow add def | |
2876 | /XX XX XShadow add def | |
2877 | }if | |
2878 | }def | |
2879 | ||
2880 | % string SBox | |
2881 | /SBox | |
2882 | {gsave | |
2883 | c space sub moveto | |
2884 | SBound | |
2885 | /XX XX space add space add def | |
2886 | /YY YY space add def | |
2887 | /yy yy space sub def | |
2888 | shadow{doShapeShadow}if | |
2889 | doShape | |
2890 | space Descent abs rmoveto | |
2891 | foreground SetRGB S | |
2892 | grestore | |
2893 | }def | |
2894 | ||
2895 | % --- Terminal | |
2896 | ||
2897 | % TeRminal: string TR | |
2898 | /TR | |
2899 | {/Effect EffectT def | |
2900 | /shape ShapeT def | |
2901 | /shapecolor BackgroundT def | |
2902 | /borderwidth BorderWidthT def | |
2903 | /bordercolor BorderColorT def | |
2904 | /foreground ForegroundT def | |
2905 | /shadow ShadowT def | |
2906 | SBox | |
2907 | }def | |
2908 | ||
2909 | %>Right Terminal: string width RT |- x y | |
2910 | /RT | |
2911 | {xyt | |
2912 | /fT F | |
2913 | /space SpaceT def | |
2914 | begin-right | |
2915 | TR | |
2916 | end-right | |
2917 | xt yt | |
2918 | }def | |
2919 | ||
2920 | %>Left Terminal: string width LT |- x y | |
2921 | /LT | |
2922 | {xyt | |
2923 | /fT F | |
2924 | /space SpaceT def | |
2925 | begin-left | |
2926 | TR | |
2927 | end-left | |
2928 | xt yt | |
2929 | }def | |
2930 | ||
2931 | %>Right Terminal Default: string width RTD |- x y | |
2932 | /RTD | |
2933 | {/-save- BorderWidthT def | |
2934 | /BorderWidthT BorderWidthT DefaultWidth add def | |
2935 | RT | |
2936 | /BorderWidthT -save- def | |
2937 | }def | |
2938 | ||
2939 | %>Left Terminal Default: string width LTD |- x y | |
2940 | /LTD | |
2941 | {/-save- BorderWidthT def | |
2942 | /BorderWidthT BorderWidthT DefaultWidth add def | |
2943 | LT | |
2944 | /BorderWidthT -save- def | |
2945 | }def | |
2946 | ||
2947 | % --- Non-Terminal | |
2948 | ||
2949 | % Non-Terminal: string NT | |
2950 | /NT | |
2951 | {/Effect EffectNT def | |
2952 | /shape ShapeNT def | |
2953 | /shapecolor BackgroundNT def | |
2954 | /borderwidth BorderWidthNT def | |
2955 | /bordercolor BorderColorNT def | |
2956 | /foreground ForegroundNT def | |
2957 | /shadow ShadowNT def | |
2958 | SBox | |
2959 | }def | |
2960 | ||
2961 | %>Right Non-Terminal: string width RNT |- x y | |
2962 | /RNT | |
2963 | {xyt | |
2964 | /fNT F | |
2965 | /space SpaceNT def | |
2966 | begin-right | |
2967 | NT | |
2968 | end-right | |
2969 | xt yt | |
2970 | }def | |
2971 | ||
2972 | %>Left Non-Terminal: string width LNT |- x y | |
2973 | /LNT | |
2974 | {xyt | |
2975 | /fNT F | |
2976 | /space SpaceNT def | |
2977 | begin-left | |
2978 | NT | |
2979 | end-left | |
2980 | xt yt | |
2981 | }def | |
2982 | ||
2983 | %>Right Non-Terminal Default: string width RNTD |- x y | |
2984 | /RNTD | |
2985 | {/-save- BorderWidthNT def | |
2986 | /BorderWidthNT BorderWidthNT DefaultWidth add def | |
2987 | RNT | |
2988 | /BorderWidthNT -save- def | |
2989 | }def | |
2990 | ||
2991 | %>Left Non-Terminal Default: string width LNTD |- x y | |
2992 | /LNTD | |
2993 | {/-save- BorderWidthNT def | |
2994 | /BorderWidthNT BorderWidthNT DefaultWidth add def | |
2995 | LNT | |
2996 | /BorderWidthNT -save- def | |
2997 | }def | |
2998 | ||
2999 | % --- Special | |
3000 | ||
3001 | % SPecial: string SP | |
3002 | /SP | |
3003 | {/Effect EffectS def | |
3004 | /shape ShapeS def | |
3005 | /shapecolor BackgroundS def | |
3006 | /borderwidth BorderWidthS def | |
3007 | /bordercolor BorderColorS def | |
3008 | /foreground ForegroundS def | |
3009 | /shadow ShadowS def | |
3010 | SBox | |
3011 | }def | |
3012 | ||
3013 | %>Right SPecial: string width RSP |- x y | |
3014 | /RSP | |
3015 | {xyt | |
3016 | /fS F | |
3017 | /space SpaceS def | |
3018 | begin-right | |
3019 | SP | |
3020 | end-right | |
3021 | xt yt | |
3022 | }def | |
3023 | ||
3024 | %>Left SPecial: string width LSP |- x y | |
3025 | /LSP | |
3026 | {xyt | |
3027 | /fS F | |
3028 | /space SpaceS def | |
3029 | begin-left | |
3030 | SP | |
3031 | end-left | |
3032 | xt yt | |
3033 | }def | |
3034 | ||
3035 | %>Right SPecial Default: string width RSPD |- x y | |
3036 | /RSPD | |
3037 | {/-save- BorderWidthS def | |
3038 | /BorderWidthS BorderWidthS DefaultWidth add def | |
3039 | RSP | |
3040 | /BorderWidthS -save- def | |
3041 | }def | |
3042 | ||
3043 | %>Left SPecial Default: string width LSPD |- x y | |
3044 | /LSPD | |
3045 | {/-save- BorderWidthS def | |
3046 | /BorderWidthS BorderWidthS DefaultWidth add def | |
3047 | LSP | |
3048 | /BorderWidthS -save- def | |
3049 | }def | |
3050 | ||
3051 | % --- Repeat and Except basics | |
3052 | ||
3053 | /begin-direction | |
3054 | {/w width rwidth sub 0.5 mul def | |
3055 | width 0 rmoveto}def | |
3056 | ||
3057 | /end-direction | |
3058 | {gsave | |
3059 | /xx c entry add /YY exch def def | |
3060 | /yy YY height sub def | |
3061 | /XX xx rwidth add def | |
3062 | shadow{doShapeShadow}if | |
3063 | doShape | |
3064 | grestore | |
3065 | }def | |
3066 | ||
3067 | /right-direction | |
3068 | {begin-direction | |
3069 | w neg EL | |
3070 | xt yt moveto | |
3071 | w hT sub EL RA | |
3072 | end-direction | |
3073 | }def | |
3074 | ||
3075 | /left-direction | |
3076 | {begin-direction | |
3077 | hT w sub EL LA | |
3078 | xt yt moveto | |
3079 | w EL | |
3080 | end-direction | |
3081 | }def | |
3082 | ||
3083 | % --- Repeat | |
3084 | ||
3085 | % entry height width rwidth begin-repeat | |
3086 | /begin-repeat | |
3087 | {/rwidth exch def | |
3088 | /width exch def | |
3089 | /height exch def | |
3090 | /entry exch def | |
3091 | /fR F | |
3092 | /space SpaceR def | |
3093 | /Effect EffectR def | |
3094 | /shape ShapeR def | |
3095 | /shapecolor BackgroundR def | |
3096 | /borderwidth BorderWidthR def | |
3097 | /bordercolor BorderColorR def | |
3098 | /foreground ForegroundR def | |
3099 | /shadow ShadowR def | |
3100 | xyt | |
3101 | }def | |
3102 | ||
3103 | % string end-repeat |- x y | |
3104 | /end-repeat | |
3105 | {gsave | |
3106 | space Descent rmoveto | |
3107 | foreground SetRGB S | |
3108 | c Descent sub | |
3109 | grestore | |
3110 | exch space add exch moveto | |
3111 | xt yt | |
3112 | }def | |
3113 | ||
3114 | %>Right RePeat: string entry height width rwidth RRP |- x y | |
3115 | /RRP{begin-repeat right-direction end-repeat}def | |
3116 | ||
3117 | %>Left RePeat: string entry height width rwidth LRP |- x y | |
3118 | /LRP{begin-repeat left-direction end-repeat}def | |
3119 | ||
3120 | % --- Except | |
3121 | ||
3122 | % entry height width rwidth begin-except | |
3123 | /begin-except | |
3124 | {/rwidth exch def | |
3125 | /width exch def | |
3126 | /height exch def | |
3127 | /entry exch def | |
3128 | /fE F | |
3129 | /space SpaceE def | |
3130 | /Effect EffectE def | |
3131 | /shape ShapeE def | |
3132 | /shapecolor BackgroundE def | |
3133 | /borderwidth BorderWidthE def | |
3134 | /bordercolor BorderColorE def | |
3135 | /foreground ForegroundE def | |
3136 | /shadow ShadowE def | |
3137 | xyt | |
3138 | }def | |
3139 | ||
3140 | % x-width end-except |- x y | |
3141 | /end-except | |
3142 | {gsave | |
3143 | space space add add Descent rmoveto | |
3144 | (-) foreground SetRGB S | |
3145 | grestore | |
3146 | space 0 rmoveto | |
3147 | xt yt | |
3148 | }def | |
3149 | ||
3150 | %>Right EXcept: x-width entry height width rwidth REX |- x y | |
3151 | /REX{begin-except right-direction end-except}def | |
3152 | ||
3153 | %>Left EXcept: x-width entry height width rwidth LEX |- x y | |
3154 | /LEX{begin-except left-direction end-except}def | |
3155 | ||
3156 | % --- Sequence | |
3157 | ||
3158 | %>Beginning Of Sequence: BOS |- x y | |
3159 | /BOS{currentpoint}bind def | |
3160 | ||
3161 | %>End Of Sequence: x y x1 y1 EOS |- x y | |
3162 | /EOS{pop pop}bind def | |
3163 | ||
3164 | % --- Production | |
3165 | ||
3166 | %>Beginning Of Production: string width height BOP |- y x | |
3167 | /BOP | |
3168 | {xyp | |
3169 | neg yp add /yw exch def | |
3170 | xp add T sub /xw exch def | |
3171 | /Effect EffectP def | |
3172 | /fP F ForegroundP SetRGB BackgroundP aload pop true BG S | |
3173 | /Effect 0 def | |
3174 | ( :) S false BG | |
3175 | xw yw moveto | |
3176 | hT EL RA | |
3177 | xp yw moveto | |
3178 | T EL | |
3179 | yp xp | |
3180 | }def | |
3181 | ||
3182 | %>End Of Production: y x delta EOP | |
3183 | /EOPH{add exch moveto}bind def % horizontal | |
3184 | /EOPV{exch pop sub 0 exch moveto}bind def % vertical | |
3185 | ||
3186 | % --- Empty Alternative | |
3187 | ||
3188 | %>Empty Alternative: width EA |- x y | |
3189 | /EA | |
3190 | {gsave | |
3191 | Er add 0 rlineto | |
3192 | Stroke | |
3193 | grestore | |
3194 | c | |
3195 | }def | |
3196 | ||
3197 | % --- Alternative | |
3198 | ||
3199 | %>AlTernative: h1 h2 ... hn n width AT |- x y | |
3200 | /AT | |
3201 | {xyo xo add /xw exch def | |
3202 | xw yo moveto | |
3203 | Er EL | |
3204 | {xw yo moveto | |
3205 | dup RAlt | |
3206 | xo yo moveto | |
3207 | LAlt}repeat | |
3208 | xo yo | |
3209 | }def | |
3210 | ||
3211 | % --- Optional | |
3212 | ||
3213 | %>OPtional: height width OP |- x y | |
3214 | /OP | |
3215 | {xyo | |
3216 | T sub /ow exch def | |
3217 | ow Er sub 0 rmoveto | |
3218 | T Er add EL | |
3219 | neg dup RAlt | |
3220 | ow T sub neg EL | |
3221 | xo yo moveto | |
3222 | LAlt | |
3223 | xo yo moveto | |
3224 | T EL | |
3225 | xo yo | |
3226 | }def | |
3227 | ||
3228 | % --- List Flow | |
3229 | ||
3230 | %>One or More: height width OM |- x y | |
3231 | /OM | |
3232 | {xyo | |
3233 | /ow exch def | |
3234 | ow Er add 0 rmoveto | |
3235 | T Er add neg EL | |
3236 | dup RLoop | |
3237 | xo T add yo moveto | |
3238 | LLoop | |
3239 | xo yo moveto | |
3240 | T EL | |
3241 | xo yo | |
3242 | }def | |
3243 | ||
3244 | %>Zero or More: h2 h1 width ZM |- x y | |
3245 | /ZM | |
3246 | {xyo | |
3247 | Er add EL | |
3248 | Er neg 0 rmoveto | |
3249 | dup RAlt | |
3250 | exch dup RLoop | |
3251 | xo yo moveto | |
3252 | exch dup LAlt | |
3253 | exch LLoop | |
3254 | yo add xo T add exch moveto | |
3255 | xo yo | |
3256 | }def | |
3257 | ||
3258 | % === end EBNF engine | |
3259 | ||
3260 | " | |
3261 | "EBNF PostScript prologue") | |
3262 | ||
3263 | ||
3264 | (defconst ebnf-eps-prologue | |
3265 | " | |
3266 | /#ebnf2ps#dict 230 dict def | |
3267 | #ebnf2ps#dict begin | |
3268 | ||
3269 | % Initiliaze variables to avoid name-conflicting with document variables. | |
3270 | % This is the case when using `bind' operator. | |
3271 | /-fillp- 0 def /h 0 def | |
3272 | /-ox- 0 def /half 0 def | |
3273 | /-oy- 0 def /height 0 def | |
3274 | /-save- 0 def /ow 0 def | |
3275 | /Ascent 0 def /quarter 0 def | |
3276 | /Descent 0 def /rXX 0 def | |
3277 | /Effect 0 def /rYY 0 def | |
3278 | /FontHeight 0 def /rwidth 0 def | |
3279 | /LineThickness 0 def /rxx 0 def | |
3280 | /OverlinePosition 0 def /ryy 0 def | |
3281 | /SpaceBackground 0 def /shadow 0 def | |
3282 | /StrikeoutPosition 0 def /shape 0 def | |
3283 | /UnderlinePosition 0 def /shapecolor 0 def | |
3284 | /XBox 0 def /space 0 def | |
3285 | /XX 0 def /st 1 string def | |
3286 | /Xshadow 0 def /w 0 def | |
3287 | /YBox 0 def /width 0 def | |
3288 | /YY 0 def /xi 0 def | |
3289 | /Yshadow 0 def /xo 0 def | |
3290 | /arrow 0 def /xp 0 def | |
3291 | /bg false def /xt 0 def | |
3292 | /bgcolor 0 def /xw 0 def | |
3293 | /bordercolor 0 def /xx 0 def | |
3294 | /borderwidth 0 def /yi 0 def | |
3295 | /dd 0 def /yo 0 def | |
3296 | /entry 0 def /yp 0 def | |
3297 | /foreground 0 def /yt 0 def | |
3298 | /yy 0 def | |
3299 | ||
3300 | ||
3301 | % ISOLatin1Encoding stolen from ps_init.ps in GhostScript 2.6.1.4: | |
3302 | /ISOLatin1Encoding where | |
3303 | {pop} | |
3304 | {% -- The ISO Latin-1 encoding vector isn't known, so define it. | |
3305 | % -- The first half is the same as the standard encoding, | |
3306 | % -- except for minus instead of hyphen at code 055. | |
3307 | /ISOLatin1Encoding | |
3308 | StandardEncoding 0 45 getinterval aload pop | |
3309 | /minus | |
3310 | StandardEncoding 46 82 getinterval aload pop | |
3311 | %*** NOTE: the following are missing in the Adobe documentation, | |
3312 | %*** but appear in the displayed table: | |
3313 | %*** macron at 0225, dieresis at 0230, cedilla at 0233, space at 0240. | |
3314 | % 0200 (128) | |
3315 | /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef | |
3316 | /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef | |
3317 | /dotlessi /grave /acute /circumflex /tilde /macron /breve /dotaccent | |
3318 | /dieresis /.notdef /ring /cedilla /.notdef /hungarumlaut /ogonek /caron | |
3319 | % 0240 (160) | |
3320 | /space /exclamdown /cent /sterling | |
3321 | /currency /yen /brokenbar /section | |
3322 | /dieresis /copyright /ordfeminine /guillemotleft | |
3323 | /logicalnot /hyphen /registered /macron | |
3324 | /degree /plusminus /twosuperior /threesuperior | |
3325 | /acute /mu /paragraph /periodcentered | |
3326 | /cedilla /onesuperior /ordmasculine /guillemotright | |
3327 | /onequarter /onehalf /threequarters /questiondown | |
3328 | % 0300 (192) | |
3329 | /Agrave /Aacute /Acircumflex /Atilde | |
3330 | /Adieresis /Aring /AE /Ccedilla | |
3331 | /Egrave /Eacute /Ecircumflex /Edieresis | |
3332 | /Igrave /Iacute /Icircumflex /Idieresis | |
3333 | /Eth /Ntilde /Ograve /Oacute | |
3334 | /Ocircumflex /Otilde /Odieresis /multiply | |
3335 | /Oslash /Ugrave /Uacute /Ucircumflex | |
3336 | /Udieresis /Yacute /Thorn /germandbls | |
3337 | % 0340 (224) | |
3338 | /agrave /aacute /acircumflex /atilde | |
3339 | /adieresis /aring /ae /ccedilla | |
3340 | /egrave /eacute /ecircumflex /edieresis | |
3341 | /igrave /iacute /icircumflex /idieresis | |
3342 | /eth /ntilde /ograve /oacute | |
3343 | /ocircumflex /otilde /odieresis /divide | |
3344 | /oslash /ugrave /uacute /ucircumflex | |
3345 | /udieresis /yacute /thorn /ydieresis | |
3346 | 256 packedarray def | |
3347 | }ifelse | |
3348 | ||
3349 | /reencodeFontISO %def | |
3350 | {dup | |
3351 | length 12 add dict % Make a new font (a new dict the same size | |
3352 | % as the old one) with room for our new symbols. | |
3353 | ||
3354 | begin % Make the new font the current dictionary. | |
3355 | {1 index /FID ne | |
3356 | {def}{pop pop}ifelse | |
3357 | }forall % Copy each of the symbols from the old dictionary | |
3358 | % to the new one except for the font ID. | |
3359 | ||
3360 | currentdict /FontType get 0 ne | |
3361 | {/Encoding ISOLatin1Encoding def}if % Override the encoding with | |
3362 | % the ISOLatin1 encoding. | |
3363 | ||
3364 | % Use the font's bounding box to determine the ascent, descent, | |
3365 | % and overall height; don't forget that these values have to be | |
3366 | % transformed using the font's matrix. | |
3367 | ||
3368 | % ^ (x2 y2) | |
3369 | % | | | |
3370 | % | v | |
3371 | % | +----+ - - | |
3372 | % | | | ^ | |
3373 | % | | | | Ascent (usually > 0) | |
3374 | % | | | | | |
3375 | % (0 0) -> +--+----+--------> | |
3376 | % | | | | |
3377 | % | | v Descent (usually < 0) | |
3378 | % (x1 y1) --> +----+ - - | |
3379 | ||
3380 | currentdict /FontType get 0 ne | |
3381 | {/FontBBox load aload pop % -- x1 y1 x2 y2 | |
3382 | FontMatrix transform /Ascent exch def pop | |
3383 | FontMatrix transform /Descent exch def pop} | |
3384 | {/PrimaryFont FDepVector 0 get def | |
3385 | PrimaryFont /FontBBox get aload pop | |
3386 | PrimaryFont /FontMatrix get transform /Ascent exch def pop | |
3387 | PrimaryFont /FontMatrix get transform /Descent exch def pop | |
3388 | }ifelse | |
3389 | ||
3390 | /FontHeight Ascent Descent sub def % use `sub' because descent < 0 | |
3391 | ||
3392 | % Define these in case they're not in the FontInfo | |
3393 | % (also, here they're easier to get to). | |
3394 | /UnderlinePosition Descent 0.70 mul def | |
3395 | /OverlinePosition Descent UnderlinePosition sub Ascent add def | |
3396 | /StrikeoutPosition Ascent 0.30 mul def | |
3397 | /LineThickness FontHeight 0.05 mul def | |
3398 | /Xshadow FontHeight 0.08 mul def | |
3399 | /Yshadow FontHeight -0.09 mul def | |
3400 | /SpaceBackground Descent neg UnderlinePosition add def | |
3401 | /XBox Descent neg def | |
3402 | /YBox LineThickness 0.7 mul def | |
3403 | ||
3404 | currentdict % Leave the new font on the stack | |
3405 | end % Stop using the font as the current dictionary | |
3406 | definefont % Put the font into the font dictionary | |
3407 | pop % Discard the returned font | |
3408 | }bind def | |
3409 | ||
3410 | % Font definition | |
3411 | /DefFont{findfont exch scalefont reencodeFontISO}def | |
3412 | ||
3413 | % Font selection | |
3414 | /F | |
3415 | {findfont | |
3416 | dup /Ascent get /Ascent exch def | |
3417 | dup /Descent get /Descent exch def | |
3418 | dup /FontHeight get /FontHeight exch def | |
3419 | dup /UnderlinePosition get /UnderlinePosition exch def | |
3420 | dup /OverlinePosition get /OverlinePosition exch def | |
3421 | dup /StrikeoutPosition get /StrikeoutPosition exch def | |
3422 | dup /LineThickness get /LineThickness exch def | |
3423 | dup /Xshadow get /Xshadow exch def | |
3424 | dup /Yshadow get /Yshadow exch def | |
3425 | dup /SpaceBackground get /SpaceBackground exch def | |
3426 | dup /XBox get /XBox exch def | |
3427 | dup /YBox get /YBox exch def | |
3428 | setfont | |
3429 | }def | |
3430 | ||
3431 | /BG | |
3432 | {dup /bg exch def | |
3433 | {mark 4 1 roll ]} | |
3434 | {[ 1.0 1.0 1.0 ]} | |
3435 | ifelse | |
3436 | /bgcolor exch def | |
3437 | }def | |
3438 | ||
3439 | % stack: -- | |
3440 | /FillBgColor{bgcolor aload pop setrgbcolor fill}bind def | |
3441 | ||
3442 | % stack: fill-or-not lower-x lower-y upper-x upper-y |- -- | |
3443 | /doRect | |
3444 | {/rYY exch def | |
3445 | /rXX exch def | |
3446 | /ryy exch def | |
3447 | /rxx exch def | |
3448 | gsave | |
3449 | newpath | |
3450 | rXX rYY moveto | |
3451 | rxx rYY lineto | |
3452 | rxx ryy lineto | |
3453 | rXX ryy lineto | |
3454 | closepath | |
3455 | % top of stack: fill-or-not | |
3456 | {FillBgColor} | |
3457 | {LineThickness setlinewidth stroke} | |
3458 | ifelse | |
3459 | grestore | |
3460 | }bind def | |
3461 | ||
3462 | % stack: string fill-or-not |- -- | |
3463 | /doOutline | |
3464 | {/-fillp- exch def | |
3465 | /-ox- currentpoint /-oy- exch def def | |
3466 | gsave | |
3467 | LineThickness setlinewidth | |
3468 | {st 0 3 -1 roll put | |
3469 | st dup true charpath | |
3470 | -fillp- {gsave FillBgColor grestore}if | |
3471 | stroke stringwidth | |
3472 | -oy- add /-oy- exch def | |
3473 | -ox- add /-ox- exch def | |
3474 | -ox- -oy- moveto | |
3475 | }forall | |
3476 | grestore | |
3477 | -ox- -oy- moveto | |
3478 | }bind def | |
3479 | ||
3480 | % stack: fill-or-not delta |- -- | |
3481 | /doBox | |
3482 | {/dd exch def | |
3483 | xx XBox sub dd sub yy YBox sub dd sub | |
3484 | XX XBox add dd add YY YBox add dd add | |
3485 | doRect | |
3486 | }bind def | |
3487 | ||
3488 | % stack: string |- -- | |
3489 | /doShadow | |
3490 | {gsave | |
3491 | Xshadow Yshadow rmoveto | |
3492 | false doOutline | |
3493 | grestore | |
3494 | }bind def | |
3495 | ||
3496 | % stack: position |- -- | |
3497 | /Hline | |
3498 | {currentpoint exch pop add dup | |
3499 | gsave | |
3500 | newpath | |
3501 | xx exch moveto | |
3502 | XX exch lineto | |
3503 | closepath | |
3504 | LineThickness setlinewidth stroke | |
3505 | grestore | |
3506 | }bind def | |
3507 | ||
3508 | % stack: string |- -- | |
3509 | % effect: 1 - underline 2 - strikeout 4 - overline | |
3510 | % 8 - shadow 16 - box 32 - outline | |
3511 | /S | |
3512 | {/xx currentpoint dup Descent add /yy exch def | |
3513 | Ascent add /YY exch def def | |
3514 | dup stringwidth pop xx add /XX exch def | |
3515 | Effect 8 and 0 ne | |
3516 | {/yy yy Yshadow add def | |
3517 | /XX XX Xshadow add def | |
3518 | }if | |
3519 | bg | |
3520 | {true | |
3521 | Effect 16 and 0 ne | |
3522 | {SpaceBackground doBox} | |
3523 | {xx yy XX YY doRect} | |
3524 | ifelse | |
3525 | }if % background | |
3526 | Effect 16 and 0 ne{false 0 doBox}if % box | |
3527 | Effect 8 and 0 ne{dup doShadow}if % shadow | |
3528 | Effect 32 and 0 ne | |
3529 | {true doOutline} % outline | |
3530 | {show} % normal text | |
3531 | ifelse | |
3532 | Effect 1 and 0 ne{UnderlinePosition Hline}if % underline | |
3533 | Effect 2 and 0 ne{StrikeoutPosition Hline}if % strikeout | |
3534 | Effect 4 and 0 ne{OverlinePosition Hline}if % overline | |
3535 | }bind def | |
3536 | ||
3537 | " | |
3538 | "EBNF EPS prologue") | |
3539 | ||
3540 | ||
3541 | (defconst ebnf-eps-begin | |
3542 | " | |
3543 | end | |
3544 | ||
3545 | % x y #ebnf2ps#begin | |
3546 | /#ebnf2ps#begin | |
3547 | {#ebnf2ps#dict begin /#ebnf2ps#save save def | |
3548 | moveto false BG 0.0 0.0 0.0 setrgbcolor}def | |
3549 | ||
3550 | /#ebnf2ps#end{showpage #ebnf2ps#save restore end}def | |
3551 | ||
0b5ecd6d | 3552 | %%EndProlog |
984ae001 GM |
3553 | " |
3554 | "EBNF EPS begin") | |
3555 | ||
3556 | ||
3557 | (defconst ebnf-eps-end | |
3558 | "#ebnf2ps#end | |
3559 | %%EOF | |
3560 | " | |
3561 | "EBNF EPS end") | |
3562 | ||
3563 | \f | |
3564 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
3565 | ;; Formatting | |
3566 | ||
3567 | ||
3568 | (defvar ebnf-format-float "%1.3f") | |
3569 | ||
3570 | ||
3571 | (defun ebnf-format-float (&rest floats) | |
3572 | (mapconcat | |
3573 | #'(lambda (float) | |
3574 | (format ebnf-format-float float)) | |
3575 | floats | |
3576 | " ")) | |
3577 | ||
3578 | ||
3579 | (defun ebnf-format-color (format-str color default) | |
3580 | (let* ((the-color (or color default)) | |
b685181e | 3581 | (rgb (ps-color-scale the-color))) |
984ae001 GM |
3582 | (format format-str |
3583 | (concat "[" | |
3584 | (ebnf-format-float (nth 0 rgb) (nth 1 rgb) (nth 2 rgb)) | |
3585 | "]") | |
3586 | the-color))) | |
3587 | ||
3588 | ||
3589 | (defvar ebnf-message-float "%3.2f") | |
3590 | ||
3591 | ||
3592 | (defsubst ebnf-message-float (format-str value) | |
3593 | (message format-str | |
3594 | (format ebnf-message-float value))) | |
3595 | ||
3596 | ||
30fa28b4 VJL |
3597 | (defvar ebnf-total 0) |
3598 | (defvar ebnf-nprod 0) | |
3599 | ||
3600 | ||
984ae001 GM |
3601 | (defsubst ebnf-message-info (messag) |
3602 | (message "%s...%3d%%" | |
3603 | messag | |
3604 | (round (/ (* (setq ebnf-nprod (1+ ebnf-nprod)) 100.0) ebnf-total)))) | |
3605 | ||
3606 | \f | |
3607 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
3608 | ;; Macros | |
3609 | ||
3610 | ||
3611 | (defmacro ebnf-node-kind (vec &optional value) | |
3612 | (if value | |
3613 | `(aset ,vec 0 ,value) | |
3614 | `(aref ,vec 0))) | |
3615 | ||
3616 | ||
3617 | (defmacro ebnf-node-width-func (node width) | |
3618 | `(funcall (aref ,node 1) ,node ,width)) | |
3619 | ||
3620 | ||
3621 | (defmacro ebnf-node-dimension-func (node &optional value) | |
3622 | (if value | |
3623 | `(aset ,node 2 ,value) | |
3624 | `(funcall (aref ,node 2) ,node))) | |
3625 | ||
3626 | ||
3627 | (defmacro ebnf-node-entry (vec &optional value) | |
3628 | (if value | |
3629 | `(aset ,vec 3 ,value) | |
3630 | `(aref ,vec 3))) | |
3631 | ||
3632 | ||
3633 | (defmacro ebnf-node-height (vec &optional value) | |
3634 | (if value | |
3635 | `(aset ,vec 4 ,value) | |
3636 | `(aref ,vec 4))) | |
3637 | ||
3638 | ||
3639 | (defmacro ebnf-node-width (vec &optional value) | |
3640 | (if value | |
3641 | `(aset ,vec 5 ,value) | |
3642 | `(aref ,vec 5))) | |
3643 | ||
3644 | ||
3645 | (defmacro ebnf-node-name (vec) | |
3646 | `(aref ,vec 6)) | |
3647 | ||
3648 | ||
3649 | (defmacro ebnf-node-list (vec &optional value) | |
3650 | (if value | |
3651 | `(aset ,vec 6 ,value) | |
3652 | `(aref ,vec 6))) | |
3653 | ||
3654 | ||
3655 | (defmacro ebnf-node-default (vec) | |
3656 | `(aref ,vec 7)) | |
3657 | ||
3658 | ||
3659 | (defmacro ebnf-node-production (vec &optional value) | |
3660 | (if value | |
3661 | `(aset ,vec 7 ,value) | |
3662 | `(aref ,vec 7))) | |
3663 | ||
3664 | ||
3665 | (defmacro ebnf-node-separator (vec &optional value) | |
3666 | (if value | |
3667 | `(aset ,vec 7 ,value) | |
3668 | `(aref ,vec 7))) | |
3669 | ||
3670 | ||
3671 | (defmacro ebnf-node-action (vec &optional value) | |
3672 | (if value | |
3673 | `(aset ,vec 8 ,value) | |
3674 | `(aref ,vec 8))) | |
3675 | ||
3676 | ||
3677 | (defmacro ebnf-node-generation (node) | |
3678 | `(funcall (ebnf-node-kind ,node) ,node)) | |
3679 | ||
3680 | ||
3681 | (defmacro ebnf-max-width (prod) | |
3682 | `(max (ebnf-node-width ,prod) | |
3683 | (+ (* (length (ebnf-node-name ,prod)) | |
3684 | ebnf-font-width-P) | |
3685 | ebnf-production-horizontal-space))) | |
3686 | ||
3687 | \f | |
3688 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
3689 | ;; PostScript generation | |
3690 | ||
3691 | ||
3692 | (defun ebnf-generate-eps (ebnf-tree) | |
3693 | (let* ((ps-color-p (and ebnf-color-p (ps-color-device))) | |
3694 | (ps-print-color-scale (if ps-color-p | |
3695 | (float (car (ps-color-values "white"))) | |
3696 | 1.0)) | |
3697 | (ebnf-total (length ebnf-tree)) | |
3698 | (ebnf-nprod 0) | |
3699 | (old-ps-output (symbol-function 'ps-output)) | |
3700 | (old-ps-output-string (symbol-function 'ps-output-string)) | |
3701 | (eps-buffer (get-buffer-create ebnf-eps-buffer-name)) | |
3702 | ebnf-debug-ps error-msg horizontal | |
3703 | prod prod-name prod-width prod-height prod-list file-list) | |
3704 | ;; redefines `ps-output' and `ps-output-string' | |
3705 | (defalias 'ps-output 'ebnf-eps-output) | |
3706 | (defalias 'ps-output-string 'ps-output-string-prim) | |
3707 | ;; generate EPS file | |
3708 | (save-excursion | |
3709 | (condition-case data | |
3710 | (progn | |
3711 | (while ebnf-tree | |
3712 | (setq prod (car ebnf-tree) | |
3713 | prod-name (ebnf-node-name prod) | |
3714 | prod-width (ebnf-max-width prod) | |
3715 | prod-height (ebnf-node-height prod) | |
b685181e GM |
3716 | horizontal (memq (ebnf-node-action prod) |
3717 | ebnf-action-list)) | |
984ae001 GM |
3718 | ;; generate production in EPS buffer |
3719 | (save-excursion | |
3720 | (set-buffer eps-buffer) | |
3721 | (setq ebnf-eps-upper-x 0.0 | |
3722 | ebnf-eps-upper-y 0.0 | |
3723 | ebnf-eps-max-width prod-width | |
3724 | ebnf-eps-max-height prod-height) | |
3725 | (ebnf-generate-production prod)) | |
3726 | (if (setq prod-list (cdr (assoc prod-name | |
3727 | ebnf-eps-production-list))) | |
3728 | ;; insert EPS buffer in all buffer associated with production | |
3729 | (ebnf-eps-production-list prod-list 'file-list horizontal | |
3730 | prod-width prod-height eps-buffer) | |
3731 | ;; write EPS file for production | |
3732 | (ebnf-eps-finish-and-write eps-buffer | |
3733 | (ebnf-eps-filename prod-name))) | |
3734 | ;; prepare for next loop | |
3735 | (save-excursion | |
3736 | (set-buffer eps-buffer) | |
3737 | (erase-buffer)) | |
3738 | (setq ebnf-tree (cdr ebnf-tree))) | |
3739 | ;; write and kill temporary buffers | |
3740 | (ebnf-eps-write-kill-temp file-list t) | |
3741 | (setq file-list nil)) | |
3742 | ;; handler | |
3743 | ((quit error) | |
3744 | (setq error-msg (error-message-string data))))) | |
3745 | ;; restore `ps-output' and `ps-output-string' | |
3746 | (defalias 'ps-output old-ps-output) | |
3747 | (defalias 'ps-output-string old-ps-output-string) | |
3748 | ;; kill temporary buffers | |
3749 | (kill-buffer eps-buffer) | |
3750 | (ebnf-eps-write-kill-temp file-list nil) | |
3751 | (and error-msg (error error-msg)) | |
3752 | (message " "))) | |
3753 | ||
3754 | ||
3755 | ;; write and kill temporary buffers | |
3756 | (defun ebnf-eps-write-kill-temp (file-list write-p) | |
3757 | (while file-list | |
3758 | (let ((buffer (get-buffer (concat " *" (car file-list) "*")))) | |
3759 | (when buffer | |
3760 | (and write-p | |
3761 | (ebnf-eps-finish-and-write buffer (car file-list))) | |
3762 | (kill-buffer buffer))) | |
3763 | (setq file-list (cdr file-list)))) | |
3764 | ||
3765 | ||
3766 | ;; insert EPS buffer in all buffer associated with production | |
3767 | (defun ebnf-eps-production-list (prod-list file-list-sym horizontal | |
3768 | prod-width prod-height eps-buffer) | |
3769 | (while prod-list | |
3770 | (add-to-list file-list-sym (car prod-list)) | |
3771 | (save-excursion | |
3772 | (set-buffer (get-buffer-create (concat " *" (car prod-list) "*"))) | |
3773 | (goto-char (point-max)) | |
3774 | (cond | |
3775 | ;; first production | |
3776 | ((zerop (buffer-size)) | |
3777 | (setq ebnf-eps-upper-x 0.0 | |
3778 | ebnf-eps-upper-y 0.0 | |
3779 | ebnf-eps-max-width prod-width | |
3780 | ebnf-eps-max-height prod-height)) | |
3781 | ;; horizontal | |
3782 | (horizontal | |
3783 | (ebnf-eop-horizontal ebnf-eps-prod-width) | |
3784 | (setq ebnf-eps-max-width (+ ebnf-eps-max-width | |
3785 | ebnf-production-horizontal-space | |
3786 | prod-width) | |
3787 | ebnf-eps-max-height (max ebnf-eps-max-height prod-height))) | |
3788 | ;; vertical | |
3789 | (t | |
3790 | (ebnf-eop-vertical ebnf-eps-max-height) | |
3791 | (setq ebnf-eps-upper-x (max ebnf-eps-upper-x ebnf-eps-max-width) | |
3792 | ebnf-eps-upper-y (if (zerop ebnf-eps-upper-y) | |
3793 | ebnf-eps-max-height | |
3794 | (+ ebnf-eps-upper-y | |
3795 | ebnf-production-vertical-space | |
3796 | ebnf-eps-max-height)) | |
3797 | ebnf-eps-max-width prod-width | |
3798 | ebnf-eps-max-height prod-height)) | |
3799 | ) | |
3800 | (setq ebnf-eps-prod-width prod-width) | |
3801 | (insert-buffer eps-buffer)) | |
3802 | (setq prod-list (cdr prod-list)))) | |
3803 | ||
3804 | ||
3805 | (defun ebnf-generate (ebnf-tree) | |
3806 | (let* ((ps-color-p (and ebnf-color-p (ps-color-device))) | |
3807 | (ps-print-color-scale (if ps-color-p | |
3808 | (float (car (ps-color-values "white"))) | |
3809 | 1.0)) | |
3810 | ps-zebra-stripes ps-line-number ps-razzle-dazzle | |
3811 | ps-print-hook | |
3812 | ps-print-begin-sheet-hook | |
3813 | ps-print-begin-page-hook | |
3814 | ps-print-begin-column-hook) | |
3815 | (ps-generate (current-buffer) (point-min) (point-max) | |
3816 | 'ebnf-generate-postscript))) | |
3817 | ||
3818 | ||
3819 | (defvar ebnf-tree nil) | |
3820 | (defvar ebnf-direction "R") | |
984ae001 GM |
3821 | |
3822 | ||
3823 | (defun ebnf-generate-postscript (from to) | |
3824 | (ebnf-begin-file) | |
3825 | (if ebnf-horizontal-max-height | |
3826 | (ebnf-generate-with-max-height) | |
3827 | (ebnf-generate-without-max-height)) | |
3828 | (message " ")) | |
3829 | ||
3830 | ||
3831 | (defun ebnf-generate-with-max-height () | |
3832 | (let ((ebnf-total (length ebnf-tree)) | |
3833 | (ebnf-nprod 0) | |
3834 | next-line max-height prod the-width) | |
3835 | (while ebnf-tree | |
3836 | ;; find next line point | |
3837 | (setq next-line ebnf-tree | |
3838 | prod (car ebnf-tree) | |
3839 | max-height (ebnf-node-height prod)) | |
3840 | (ebnf-begin-line prod (ebnf-max-width prod)) | |
3841 | (while (and (setq next-line (cdr next-line)) | |
3842 | (setq prod (car next-line)) | |
3843 | (memq (ebnf-node-action prod) ebnf-action-list) | |
3844 | (setq the-width (ebnf-max-width prod)) | |
3845 | (<= the-width ps-width-remaining)) | |
3846 | (setq max-height (max max-height (ebnf-node-height prod)) | |
3847 | ps-width-remaining (- ps-width-remaining | |
3848 | (+ the-width | |
3849 | ebnf-production-horizontal-space)))) | |
3850 | ;; generate current line | |
3851 | (ebnf-newline max-height) | |
3852 | (setq prod (car ebnf-tree)) | |
3853 | (ebnf-generate-production prod) | |
3854 | (while (not (eq (setq ebnf-tree (cdr ebnf-tree)) next-line)) | |
3855 | (ebnf-eop-horizontal (ebnf-max-width prod)) | |
3856 | (setq prod (car ebnf-tree)) | |
3857 | (ebnf-generate-production prod)) | |
3858 | (ebnf-eop-vertical max-height)))) | |
3859 | ||
3860 | ||
3861 | (defun ebnf-generate-without-max-height () | |
3862 | (let ((ebnf-total (length ebnf-tree)) | |
3863 | (ebnf-nprod 0) | |
3864 | max-height prod bef-width cur-width) | |
3865 | (while ebnf-tree | |
3866 | ;; generate current line | |
3867 | (setq prod (car ebnf-tree) | |
3868 | max-height (ebnf-node-height prod) | |
3869 | bef-width (ebnf-max-width prod)) | |
3870 | (ebnf-begin-line prod bef-width) | |
3871 | (ebnf-generate-production prod) | |
3872 | (while (and (setq ebnf-tree (cdr ebnf-tree)) | |
3873 | (setq prod (car ebnf-tree)) | |
3874 | (memq (ebnf-node-action prod) ebnf-action-list) | |
3875 | (setq cur-width (ebnf-max-width prod)) | |
3876 | (<= cur-width ps-width-remaining) | |
3877 | (<= (ebnf-node-height prod) ps-height-remaining)) | |
3878 | (ebnf-eop-horizontal bef-width) | |
3879 | (ebnf-generate-production prod) | |
3880 | (setq bef-width cur-width | |
3881 | max-height (max max-height (ebnf-node-height prod)) | |
3882 | ps-width-remaining (- ps-width-remaining | |
3883 | (+ cur-width | |
3884 | ebnf-production-horizontal-space)))) | |
3885 | (ebnf-eop-vertical max-height) | |
3886 | ;; prepare next line | |
3887 | (ebnf-newline max-height)))) | |
3888 | ||
3889 | ||
3890 | (defun ebnf-begin-line (prod width) | |
3891 | (and (or (eq (ebnf-node-action prod) 'form-feed) | |
3892 | (> (ebnf-node-height prod) ps-height-remaining)) | |
3893 | (ebnf-new-page)) | |
3894 | (setq ps-width-remaining (- ps-width-remaining | |
3895 | (+ width | |
3896 | ebnf-production-horizontal-space)))) | |
3897 | ||
3898 | ||
3899 | (defun ebnf-newline (height) | |
3900 | (and (> height ps-height-remaining) | |
3901 | (ebnf-new-page)) | |
3902 | (setq ps-width-remaining ps-print-width | |
3903 | ps-height-remaining (- ps-height-remaining | |
3904 | (+ height | |
3905 | ebnf-production-vertical-space)))) | |
3906 | ||
3907 | ||
3908 | ;; [production width-fun dim-fun entry height width name production action] | |
3909 | (defun ebnf-generate-production (production) | |
3910 | (ebnf-message-info "Generating") | |
3911 | (run-hooks 'ebnf-production-hook) | |
3912 | (ps-output-string (ebnf-node-name production)) | |
3913 | (ps-output " " | |
3914 | (ebnf-format-float | |
3915 | (ebnf-node-width production) | |
3916 | (+ ebnf-basic-height | |
3917 | (ebnf-node-entry (ebnf-node-production production)))) | |
3918 | " BOP\n") | |
3919 | (ebnf-node-generation (ebnf-node-production production)) | |
3920 | (ps-output "EOS\n")) | |
3921 | ||
3922 | ||
3923 | ;; [alternative width-fun dim-fun entry height width list] | |
3924 | (defun ebnf-generate-alternative (alternative) | |
3925 | (let ((alt (ebnf-node-list alternative)) | |
3926 | (entry (ebnf-node-entry alternative)) | |
3927 | (nlist 0) | |
3928 | alt-height alt-entry) | |
3929 | (while alt | |
3930 | (ps-output (ebnf-format-float (- entry (ebnf-node-entry (car alt)))) | |
3931 | " ") | |
3932 | (setq entry (- entry (ebnf-node-height (car alt)) ebnf-vertical-space) | |
3933 | nlist (1+ nlist) | |
3934 | alt (cdr alt))) | |
3935 | (ps-output (format "%d " nlist) | |
3936 | (ebnf-format-float (ebnf-node-width alternative)) | |
3937 | " AT\n") | |
3938 | (setq alt (ebnf-node-list alternative)) | |
3939 | (when alt | |
3940 | (ebnf-node-generation (car alt)) | |
3941 | (setq alt-height (- (ebnf-node-height (car alt)) | |
3942 | (ebnf-node-entry (car alt))))) | |
3943 | (while (setq alt (cdr alt)) | |
3944 | (setq alt-entry (ebnf-node-entry (car alt))) | |
3945 | (ebnf-vertical-movement | |
3946 | (- (+ alt-height ebnf-vertical-space alt-entry))) | |
3947 | (ebnf-node-generation (car alt)) | |
3948 | (setq alt-height (- (ebnf-node-height (car alt)) alt-entry)))) | |
3949 | (ps-output "EOS\n")) | |
3950 | ||
3951 | ||
3952 | ;; [sequence width-fun dim-fun entry height width list] | |
3953 | (defun ebnf-generate-sequence (sequence) | |
3954 | (ps-output "BOS\n") | |
3955 | (let ((seq (ebnf-node-list sequence)) | |
3956 | seq-width) | |
3957 | (when seq | |
3958 | (ebnf-node-generation (car seq)) | |
3959 | (setq seq-width (ebnf-node-width (car seq)))) | |
3960 | (while (setq seq (cdr seq)) | |
3961 | (ebnf-horizontal-movement seq-width) | |
3962 | (ebnf-node-generation (car seq)) | |
3963 | (setq seq-width (ebnf-node-width (car seq))))) | |
3964 | (ps-output "EOS\n")) | |
3965 | ||
3966 | ||
3967 | ;; [terminal width-fun dim-fun entry height width name] | |
3968 | (defun ebnf-generate-terminal (terminal) | |
3969 | (ebnf-gen-terminal terminal "T")) | |
3970 | ||
3971 | ||
3972 | ;; [non-terminal width-fun dim-fun entry height width name] | |
3973 | (defun ebnf-generate-non-terminal (non-terminal) | |
3974 | (ebnf-gen-terminal non-terminal "NT")) | |
3975 | ||
3976 | ||
3977 | ;; [empty width-fun dim-fun entry height width] | |
3978 | (defun ebnf-generate-empty (empty) | |
3979 | (ebnf-empty-alternative (ebnf-node-width empty))) | |
3980 | ||
3981 | ||
3982 | ;; [optional width-fun dim-fun entry height width element] | |
3983 | (defun ebnf-generate-optional (optional) | |
3984 | (let ((the-optional (ebnf-node-list optional))) | |
3985 | (ps-output (ebnf-format-float | |
3986 | (+ (- (ebnf-node-height the-optional) | |
3987 | (ebnf-node-entry optional)) | |
3988 | ebnf-vertical-space) | |
3989 | (ebnf-node-width optional)) | |
3990 | " OP\n") | |
3991 | (ebnf-node-generation the-optional) | |
3992 | (ps-output "EOS\n"))) | |
3993 | ||
3994 | ||
3995 | ;; [one-or-more width-fun dim-fun entry height width element separator] | |
3996 | (defun ebnf-generate-one-or-more (one-or-more) | |
3997 | (let* ((width (ebnf-node-width one-or-more)) | |
3998 | (sep (ebnf-node-separator one-or-more)) | |
3999 | (entry (- (ebnf-node-entry one-or-more) | |
4000 | (if sep | |
4001 | (ebnf-node-entry sep) | |
4002 | 0)))) | |
4003 | (ps-output (ebnf-format-float entry width) | |
4004 | " OM\n") | |
4005 | (ebnf-node-generation (ebnf-node-list one-or-more)) | |
4006 | (ebnf-vertical-movement entry) | |
4007 | (if sep | |
4008 | (let ((ebnf-direction "L")) | |
4009 | (ebnf-node-generation sep)) | |
4010 | (ebnf-empty-alternative (- width ebnf-horizontal-space)))) | |
4011 | (ps-output "EOS\n")) | |
4012 | ||
4013 | ||
4014 | ;; [zero-or-more width-fun dim-fun entry height width element separator] | |
4015 | (defun ebnf-generate-zero-or-more (zero-or-more) | |
4016 | (let* ((width (ebnf-node-width zero-or-more)) | |
4017 | (node-list (ebnf-node-list zero-or-more)) | |
4018 | (list-entry (ebnf-node-entry node-list)) | |
4019 | (node-sep (ebnf-node-separator zero-or-more)) | |
4020 | (entry (+ list-entry | |
4021 | ebnf-vertical-space | |
4022 | (if node-sep | |
4023 | (- (ebnf-node-height node-sep) | |
4024 | (ebnf-node-entry node-sep)) | |
4025 | 0)))) | |
4026 | (ps-output (ebnf-format-float entry | |
4027 | (+ (- (ebnf-node-height node-list) | |
4028 | list-entry) | |
4029 | ebnf-vertical-space) | |
4030 | width) | |
4031 | " ZM\n") | |
4032 | (ebnf-node-generation (ebnf-node-list zero-or-more)) | |
4033 | (ebnf-vertical-movement entry) | |
4034 | (if (ebnf-node-separator zero-or-more) | |
4035 | (let ((ebnf-direction "L")) | |
4036 | (ebnf-node-generation (ebnf-node-separator zero-or-more))) | |
4037 | (ebnf-empty-alternative (- width ebnf-horizontal-space)))) | |
4038 | (ps-output "EOS\n")) | |
4039 | ||
4040 | ||
4041 | ;; [special width-fun dim-fun entry height width name] | |
4042 | (defun ebnf-generate-special (special) | |
4043 | (ebnf-gen-terminal special "SP")) | |
4044 | ||
4045 | ||
4046 | ;; [repeat width-fun dim-fun entry height width times element] | |
4047 | (defun ebnf-generate-repeat (repeat) | |
4048 | (let ((times (ebnf-node-name repeat)) | |
4049 | (element (ebnf-node-separator repeat))) | |
4050 | (ps-output-string times) | |
4051 | (ps-output " " | |
4052 | (ebnf-format-float | |
4053 | (ebnf-node-entry repeat) | |
4054 | (ebnf-node-height repeat) | |
4055 | (ebnf-node-width repeat) | |
4056 | (if element | |
4057 | (+ (ebnf-node-width element) | |
4058 | ebnf-space-R ebnf-space-R ebnf-space-R | |
4059 | (* (length times) ebnf-font-width-R)) | |
4060 | 0.0)) | |
4061 | " " ebnf-direction "RP\n") | |
4062 | (and element | |
4063 | (ebnf-node-generation element))) | |
4064 | (ps-output "EOS\n")) | |
4065 | ||
4066 | ||
4067 | ;; [except width-fun dim-fun entry height width element element] | |
4068 | (defun ebnf-generate-except (except) | |
4069 | (let* ((element (ebnf-node-list except)) | |
4070 | (exception (ebnf-node-separator except)) | |
4071 | (width (ebnf-node-width element))) | |
4072 | (ps-output (ebnf-format-float | |
4073 | width | |
4074 | (ebnf-node-entry except) | |
4075 | (ebnf-node-height except) | |
4076 | (ebnf-node-width except) | |
4077 | (+ width | |
4078 | ebnf-space-E ebnf-space-E ebnf-space-E | |
4079 | ebnf-font-width-E | |
4080 | (if exception | |
4081 | (+ (ebnf-node-width exception) ebnf-space-E) | |
4082 | 0.0))) | |
4083 | " " ebnf-direction "EX\n") | |
4084 | (ebnf-node-generation (ebnf-node-list except)) | |
4085 | (when exception | |
4086 | (ebnf-horizontal-movement (+ width ebnf-space-E | |
4087 | ebnf-font-width-E ebnf-space-E)) | |
4088 | (ebnf-node-generation exception))) | |
4089 | (ps-output "EOS\n")) | |
4090 | ||
4091 | ||
4092 | (defun ebnf-gen-terminal (node code) | |
4093 | (ps-output-string (ebnf-node-name node)) | |
4094 | (ps-output " " (ebnf-format-float (ebnf-node-width node)) | |
4095 | " " ebnf-direction code | |
4096 | (if (ebnf-node-default node) | |
4097 | "D\n" | |
4098 | "\n"))) | |
4099 | ||
4100 | \f | |
4101 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
4102 | ;; Internal functions | |
4103 | ||
4104 | ||
6a5275dc GM |
4105 | ;; function `ebnf-range-regexp' is used to avoid a bug of `skip-chars-forward' |
4106 | ;; on version 20.4.1, that is, it doesn't accept ranges like "\240-\377" (or | |
4107 | ;; "\177-\237"), but it accepts the character sequence from \240 to \377 (or | |
4108 | ;; from \177 to \237). It seems that version 20.7 has the same problem. | |
4109 | (defun ebnf-range-regexp (prefix from to) | |
4110 | (let (str) | |
4111 | (while (<= from to) | |
4112 | (setq str (concat str (char-to-string from)) | |
4113 | from (1+ from))) | |
4114 | (concat prefix str))) | |
4115 | ||
4116 | ||
984ae001 GM |
4117 | (defvar ebnf-map-name |
4118 | (let ((map (make-vector 256 ?\_))) | |
4119 | (mapcar #'(lambda (char) | |
4120 | (aset map char char)) | |
4121 | (concat "#$%&+-.0123456789=?@~" | |
4122 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
4123 | "abcdefghijklmnopqrstuvwxyz")) | |
4124 | map)) | |
4125 | ||
4126 | ||
4127 | (defun ebnf-eps-filename (str) | |
4128 | (let* ((len (length str)) | |
4129 | (stri 0) | |
4130 | (new (make-string len ?\ ))) | |
4131 | (while (< stri len) | |
4132 | (aset new stri (aref ebnf-map-name (aref str stri))) | |
4133 | (setq stri (1+ stri))) | |
4134 | (concat ebnf-eps-prefix new ".eps"))) | |
4135 | ||
4136 | ||
4137 | (defun ebnf-eps-output (&rest args) | |
4138 | (while args | |
4139 | (insert (car args)) | |
4140 | (setq args (cdr args)))) | |
4141 | ||
4142 | ||
4143 | (defun ebnf-generate-region (from to gen-func) | |
4144 | (run-hooks 'ebnf-hook) | |
4145 | (let ((ebnf-limit (max from to)) | |
4146 | the-point) | |
4147 | (save-excursion | |
4148 | (save-restriction | |
4149 | (save-match-data | |
4150 | (condition-case data | |
4151 | (let ((tree (ebnf-parse-and-sort (min from to)))) | |
4152 | (when gen-func | |
4153 | (funcall gen-func | |
4154 | (ebnf-dimensions | |
4155 | (ebnf-optimize | |
4156 | (ebnf-eliminate-empty-rules tree)))))) | |
4157 | ;; handler | |
4158 | ((quit error) | |
4159 | (ding) | |
4160 | (setq the-point (max (1- (point)) (point-min))) | |
4161 | (message (error-message-string data))))))) | |
4162 | (cond | |
4163 | (the-point | |
4164 | (goto-char the-point)) | |
4165 | (gen-func | |
4166 | nil) | |
4167 | (t | |
ab3256ed | 4168 | (message "EBNF syntactic analysis: NO ERRORS."))))) |
984ae001 GM |
4169 | |
4170 | ||
4171 | (defun ebnf-parse-and-sort (start) | |
4172 | (ebnf-begin-job) | |
4173 | (let ((tree (funcall ebnf-parser-func start))) | |
4174 | (if ebnf-sort-production | |
4175 | (progn | |
4176 | (message "Sorting...") | |
4177 | (sort tree | |
4178 | (if (eq ebnf-sort-production 'ascending) | |
4179 | 'ebnf-sorter-ascending | |
4180 | 'ebnf-sorter-descending))) | |
4181 | (nreverse tree)))) | |
4182 | ||
4183 | ||
4184 | (defun ebnf-sorter-ascending (first second) | |
4185 | (string< (ebnf-node-name first) | |
4186 | (ebnf-node-name second))) | |
4187 | ||
4188 | ||
4189 | (defun ebnf-sorter-descending (first second) | |
4190 | (string< (ebnf-node-name second) | |
4191 | (ebnf-node-name first))) | |
4192 | ||
4193 | ||
4194 | (defun ebnf-empty-alternative (width) | |
4195 | (ps-output (ebnf-format-float width) " EA\n")) | |
4196 | ||
4197 | ||
4198 | (defun ebnf-vertical-movement (height) | |
4199 | (ps-output (ebnf-format-float height) " vm\n")) | |
4200 | ||
4201 | ||
4202 | (defun ebnf-horizontal-movement (width) | |
4203 | (ps-output (ebnf-format-float width) " hm\n")) | |
4204 | ||
4205 | ||
4206 | (defun ebnf-entry (height) | |
4207 | (* height ebnf-entry-percentage)) | |
4208 | ||
4209 | ||
4210 | (defun ebnf-eop-vertical (height) | |
4211 | (ps-output (ebnf-format-float (+ height ebnf-production-vertical-space)) | |
4212 | " EOPV\n\n")) | |
4213 | ||
4214 | ||
4215 | (defun ebnf-eop-horizontal (width) | |
4216 | (ps-output (ebnf-format-float (+ width ebnf-production-horizontal-space)) | |
4217 | " EOPH\n\n")) | |
4218 | ||
4219 | ||
4220 | (defun ebnf-new-page () | |
4221 | (when (< ps-height-remaining ps-print-height) | |
4222 | (run-hooks 'ebnf-page-hook) | |
4223 | (ps-next-page) | |
4224 | (ps-output "\n"))) | |
4225 | ||
4226 | ||
4227 | (defsubst ebnf-font-size (font) (nth 0 font)) | |
4228 | (defsubst ebnf-font-name (font) (nth 1 font)) | |
4229 | (defsubst ebnf-font-foreground (font) (nth 2 font)) | |
4230 | (defsubst ebnf-font-background (font) (nth 3 font)) | |
4231 | (defsubst ebnf-font-list (font) (nthcdr 4 font)) | |
4232 | (defsubst ebnf-font-attributes (font) | |
4233 | (lsh (ps-extension-bit (cdr font)) -2)) | |
4234 | ||
4235 | ||
4236 | (defconst ebnf-font-name-select | |
4237 | (vector 'normal 'bold 'italic 'bold-italic)) | |
4238 | ||
4239 | ||
4240 | (defun ebnf-font-name-select (font) | |
4241 | (let* ((font-list (ebnf-font-list font)) | |
4242 | (font-index (+ (if (memq 'bold font-list) 1 0) | |
4243 | (if (memq 'italic font-list) 2 0))) | |
4244 | (name (ebnf-font-name font)) | |
4245 | (database (cdr (assoc name ps-font-info-database))) | |
4246 | (info-list (or (cdr (assoc 'fonts database)) | |
4247 | (error "Invalid font: %s" name)))) | |
4248 | (or (cdr (assoc (aref ebnf-font-name-select font-index) | |
4249 | info-list)) | |
4250 | (error "Invalid attributes for font %s" name)))) | |
4251 | ||
4252 | ||
4253 | (defun ebnf-font-select (font select) | |
4254 | (let* ((name (ebnf-font-name font)) | |
4255 | (database (cdr (assoc name ps-font-info-database))) | |
4256 | (size (cdr (assoc 'size database))) | |
4257 | (base (cdr (assoc select database)))) | |
4258 | (if (and size base) | |
4259 | (/ (* (ebnf-font-size font) base) | |
4260 | size) | |
4261 | (error "Invalid font: %s" name)))) | |
4262 | ||
4263 | ||
4264 | (defsubst ebnf-font-width (font) | |
4265 | (ebnf-font-select font 'avg-char-width)) | |
4266 | (defsubst ebnf-font-height (font) | |
4267 | (ebnf-font-select font 'line-height)) | |
4268 | ||
4269 | ||
4270 | (defun ebnf-begin-job () | |
ae6f46f9 | 4271 | (ps-printing-region nil nil nil) |
984ae001 GM |
4272 | (if ebnf-use-float-format |
4273 | (setq ebnf-format-float "%1.3f" | |
4274 | ebnf-message-float "%3.2f") | |
4275 | (setq ebnf-format-float "%s" | |
4276 | ebnf-message-float "%s")) | |
4277 | (ebnf-otz-initialize) | |
4278 | ;; to avoid compilation gripes when calling autoloaded functions | |
4279 | (funcall (cond ((eq ebnf-syntax 'iso-ebnf) | |
4280 | (setq ebnf-parser-func 'ebnf-iso-parser) | |
4281 | 'ebnf-iso-initialize) | |
4282 | ((eq ebnf-syntax 'yacc) | |
4283 | (setq ebnf-parser-func 'ebnf-yac-parser) | |
4284 | 'ebnf-yac-initialize) | |
4285 | (t | |
4286 | (setq ebnf-parser-func 'ebnf-bnf-parser) | |
4287 | 'ebnf-bnf-initialize))) | |
4288 | (and ebnf-terminal-regexp ; ensures that it's a string or nil | |
4289 | (not (stringp ebnf-terminal-regexp)) | |
4290 | (setq ebnf-terminal-regexp nil)) | |
4291 | (or (and ebnf-eps-prefix ; ensures that it's a string | |
4292 | (stringp ebnf-eps-prefix)) | |
4293 | (setq ebnf-eps-prefix "ebnf--")) | |
4294 | (setq ebnf-entry-percentage ; ensures value between 0.0 and 1.0 | |
4295 | (min (max ebnf-entry-percentage 0.0) 1.0) | |
4296 | ebnf-action-list (if ebnf-horizontal-orientation | |
4297 | '(nil keep-line) | |
4298 | '(keep-line)) | |
4299 | ebnf-settings nil | |
4300 | ebnf-fonts-required nil | |
4301 | ebnf-action nil | |
4302 | ebnf-default-p nil | |
4303 | ebnf-eps-context nil | |
4304 | ebnf-eps-production-list nil | |
4305 | ebnf-eps-upper-x 0.0 | |
4306 | ebnf-eps-upper-y 0.0 | |
4307 | ebnf-font-height-P (ebnf-font-height ebnf-production-font) | |
4308 | ebnf-font-height-T (ebnf-font-height ebnf-terminal-font) | |
4309 | ebnf-font-height-NT (ebnf-font-height ebnf-non-terminal-font) | |
4310 | ebnf-font-height-S (ebnf-font-height ebnf-special-font) | |
4311 | ebnf-font-height-E (ebnf-font-height ebnf-except-font) | |
4312 | ebnf-font-height-R (ebnf-font-height ebnf-repeat-font) | |
4313 | ebnf-font-width-P (ebnf-font-width ebnf-production-font) | |
4314 | ebnf-font-width-T (ebnf-font-width ebnf-terminal-font) | |
4315 | ebnf-font-width-NT (ebnf-font-width ebnf-non-terminal-font) | |
4316 | ebnf-font-width-S (ebnf-font-width ebnf-special-font) | |
4317 | ebnf-font-width-E (ebnf-font-width ebnf-except-font) | |
4318 | ebnf-font-width-R (ebnf-font-width ebnf-repeat-font) | |
4319 | ebnf-space-T (* ebnf-font-height-T 0.5) | |
4320 | ebnf-space-NT (* ebnf-font-height-NT 0.5) | |
4321 | ebnf-space-S (* ebnf-font-height-S 0.5) | |
4322 | ebnf-space-E (* ebnf-font-height-E 0.5) | |
4323 | ebnf-space-R (* ebnf-font-height-R 0.5)) | |
4324 | (let ((basic (+ ebnf-font-height-T ebnf-font-height-NT))) | |
4325 | (setq ebnf-basic-width (* basic 0.5) | |
4326 | ebnf-horizontal-space (+ basic basic) | |
4327 | ebnf-basic-height ebnf-basic-width | |
4328 | ebnf-vertical-space ebnf-basic-width) | |
4329 | ;; ensures value is greater than zero | |
4330 | (or (and (numberp ebnf-production-horizontal-space) | |
4331 | (> ebnf-production-horizontal-space 0.0)) | |
4332 | (setq ebnf-production-horizontal-space basic)) | |
4333 | ;; ensures value is greater than zero | |
4334 | (or (and (numberp ebnf-production-vertical-space) | |
4335 | (> ebnf-production-vertical-space 0.0)) | |
4336 | (setq ebnf-production-vertical-space basic)))) | |
4337 | ||
4338 | ||
4339 | (defsubst ebnf-shape-value (sym alist) | |
4340 | (or (cdr (assq sym alist)) 0)) | |
4341 | ||
4342 | ||
4343 | (defsubst ebnf-boolean (value) | |
4344 | (if value "true" "false")) | |
4345 | ||
4346 | ||
4347 | (defun ebnf-begin-file () | |
4348 | (ps-flush-output) | |
4349 | (save-excursion | |
4350 | (set-buffer ps-spool-buffer) | |
4351 | (goto-char (point-min)) | |
4352 | (and (search-forward "%%Creator: " nil t) | |
4353 | (not (search-forward "& ebnf2ps v" | |
4354 | (save-excursion (end-of-line) (point)) | |
4355 | t)) | |
4356 | (progn | |
4357 | ;; adjust creator comment | |
4358 | (end-of-line) | |
4359 | (backward-char) | |
4360 | (insert " & ebnf2ps v" ebnf-version) | |
4361 | ;; insert ebnf settings & engine | |
4362 | (goto-char (point-max)) | |
0b5ecd6d | 4363 | (search-backward "\n%%EndProlog\n") |
984ae001 GM |
4364 | (ebnf-insert-ebnf-prologue) |
4365 | (ps-output "\n"))))) | |
4366 | ||
4367 | ||
4368 | (defun ebnf-eps-finish-and-write (buffer filename) | |
4369 | (save-excursion | |
4370 | (set-buffer buffer) | |
4371 | (setq ebnf-eps-upper-x (max ebnf-eps-upper-x ebnf-eps-max-width) | |
4372 | ebnf-eps-upper-y (if (zerop ebnf-eps-upper-y) | |
4373 | ebnf-eps-max-height | |
4374 | (+ ebnf-eps-upper-y | |
4375 | ebnf-production-vertical-space | |
4376 | ebnf-eps-max-height))) | |
4377 | ;; prologue | |
4378 | (goto-char (point-min)) | |
4379 | (insert | |
4380 | "%!PS-Adobe-3.0 EPSF-3.0" | |
4381 | "\n%%BoundingBox: 0 0 " | |
4382 | (format "%d %d" (1+ ebnf-eps-upper-x) (1+ ebnf-eps-upper-y)) | |
4383 | "\n%%Title: " filename | |
01d19dd7 | 4384 | "\n%%CreationDate: " (format-time-string "%T %b %d %Y") |
984ae001 GM |
4385 | "\n%%Creator: " (user-full-name) " (using ebnf2ps v" ebnf-version ")" |
4386 | "\n%%DocumentNeededResources: font " | |
4387 | (or ebnf-fonts-required | |
4388 | (setq ebnf-fonts-required | |
bf061ba6 GM |
4389 | (mapconcat 'identity |
4390 | (ps-remove-duplicates | |
4391 | (mapcar 'ebnf-font-name-select | |
4392 | (list ebnf-production-font | |
4393 | ebnf-terminal-font | |
4394 | ebnf-non-terminal-font | |
4395 | ebnf-special-font | |
4396 | ebnf-except-font | |
4397 | ebnf-repeat-font))) | |
4398 | "\n%%+ font "))) | |
0b5ecd6d | 4399 | "\n%%Pages: 0\n%%EndComments\n\n%%BeginProlog\n" |
984ae001 GM |
4400 | ebnf-eps-prologue) |
4401 | (ebnf-insert-ebnf-prologue) | |
4402 | (insert ebnf-eps-begin | |
4403 | "\n0 " (ebnf-format-float | |
4404 | (- ebnf-eps-upper-y (* ebnf-font-height-P 0.7))) | |
4405 | " #ebnf2ps#begin\n") | |
4406 | ;; epilogue | |
4407 | (goto-char (point-max)) | |
4408 | (insert ebnf-eps-end) | |
4409 | ;; write file | |
4410 | (message "Saving...") | |
4411 | (setq filename (expand-file-name filename)) | |
4412 | (let ((coding-system-for-write 'raw-text-unix)) | |
4413 | (write-region (point-min) (point-max) filename)) | |
4414 | (message "Wrote %s" filename))) | |
4415 | ||
4416 | ||
4417 | (defun ebnf-insert-ebnf-prologue () | |
4418 | (insert | |
4419 | (or ebnf-settings | |
4420 | (setq ebnf-settings | |
4421 | (concat | |
4422 | "\n\n% === begin EBNF settings\n\n" | |
4423 | ;; production | |
4424 | (format "/fP %s /%s DefFont\n" | |
4425 | (ebnf-format-float (ebnf-font-size ebnf-production-font)) | |
4426 | (ebnf-font-name-select ebnf-production-font)) | |
4427 | (ebnf-format-color "/ForegroundP %s def %% %s\n" | |
4428 | (ebnf-font-foreground ebnf-production-font) | |
4429 | "Black") | |
4430 | (ebnf-format-color "/BackgroundP %s def %% %s\n" | |
4431 | (ebnf-font-background ebnf-production-font) | |
4432 | "White") | |
4433 | (format "/EffectP %d def\n" | |
4434 | (ebnf-font-attributes ebnf-production-font)) | |
4435 | ;; terminal | |
4436 | (format "/fT %s /%s DefFont\n" | |
4437 | (ebnf-format-float (ebnf-font-size ebnf-terminal-font)) | |
4438 | (ebnf-font-name-select ebnf-terminal-font)) | |
4439 | (ebnf-format-color "/ForegroundT %s def %% %s\n" | |
4440 | (ebnf-font-foreground ebnf-terminal-font) | |
4441 | "Black") | |
4442 | (ebnf-format-color "/BackgroundT %s def %% %s\n" | |
4443 | (ebnf-font-background ebnf-terminal-font) | |
4444 | "White") | |
4445 | (format "/EffectT %d def\n" | |
4446 | (ebnf-font-attributes ebnf-terminal-font)) | |
4447 | (format "/BorderWidthT %s def\n" | |
4448 | (ebnf-format-float ebnf-terminal-border-width)) | |
4449 | (ebnf-format-color "/BorderColorT %s def %% %s\n" | |
4450 | ebnf-terminal-border-color | |
4451 | "Black") | |
4452 | (format "/ShapeT %d def\n" | |
4453 | (ebnf-shape-value ebnf-terminal-shape | |
4454 | ebnf-terminal-shape-alist)) | |
4455 | (format "/ShadowT %s def\n" | |
4456 | (ebnf-boolean ebnf-terminal-shadow)) | |
4457 | ;; non-terminal | |
4458 | (format "/fNT %s /%s DefFont\n" | |
4459 | (ebnf-format-float | |
4460 | (ebnf-font-size ebnf-non-terminal-font)) | |
4461 | (ebnf-font-name-select ebnf-non-terminal-font)) | |
4462 | (ebnf-format-color "/ForegroundNT %s def %% %s\n" | |
4463 | (ebnf-font-foreground ebnf-non-terminal-font) | |
4464 | "Black") | |
4465 | (ebnf-format-color "/BackgroundNT %s def %% %s\n" | |
4466 | (ebnf-font-background ebnf-non-terminal-font) | |
4467 | "White") | |
4468 | (format "/EffectNT %d def\n" | |
4469 | (ebnf-font-attributes ebnf-non-terminal-font)) | |
4470 | (format "/BorderWidthNT %s def\n" | |
4471 | (ebnf-format-float ebnf-non-terminal-border-width)) | |
4472 | (ebnf-format-color "/BorderColorNT %s def %% %s\n" | |
4473 | ebnf-non-terminal-border-color | |
4474 | "Black") | |
4475 | (format "/ShapeNT %d def\n" | |
4476 | (ebnf-shape-value ebnf-non-terminal-shape | |
4477 | ebnf-terminal-shape-alist)) | |
4478 | (format "/ShadowNT %s def\n" | |
4479 | (ebnf-boolean ebnf-non-terminal-shadow)) | |
4480 | ;; special | |
4481 | (format "/fS %s /%s DefFont\n" | |
4482 | (ebnf-format-float (ebnf-font-size ebnf-special-font)) | |
4483 | (ebnf-font-name-select ebnf-special-font)) | |
4484 | (ebnf-format-color "/ForegroundS %s def %% %s\n" | |
4485 | (ebnf-font-foreground ebnf-special-font) | |
4486 | "Black") | |
4487 | (ebnf-format-color "/BackgroundS %s def %% %s\n" | |
4488 | (ebnf-font-background ebnf-special-font) | |
4489 | "Gray95") | |
4490 | (format "/EffectS %d def\n" | |
4491 | (ebnf-font-attributes ebnf-special-font)) | |
4492 | (format "/BorderWidthS %s def\n" | |
4493 | (ebnf-format-float ebnf-special-border-width)) | |
4494 | (ebnf-format-color "/BorderColorS %s def %% %s\n" | |
4495 | ebnf-special-border-color | |
4496 | "Black") | |
4497 | (format "/ShapeS %d def\n" | |
4498 | (ebnf-shape-value ebnf-special-shape | |
4499 | ebnf-terminal-shape-alist)) | |
4500 | (format "/ShadowS %s def\n" | |
4501 | (ebnf-boolean ebnf-special-shadow)) | |
4502 | ;; except | |
4503 | (format "/fE %s /%s DefFont\n" | |
4504 | (ebnf-format-float (ebnf-font-size ebnf-except-font)) | |
4505 | (ebnf-font-name-select ebnf-except-font)) | |
4506 | (ebnf-format-color "/ForegroundE %s def %% %s\n" | |
4507 | (ebnf-font-foreground ebnf-except-font) | |
4508 | "Black") | |
4509 | (ebnf-format-color "/BackgroundE %s def %% %s\n" | |
4510 | (ebnf-font-background ebnf-except-font) | |
4511 | "Gray90") | |
4512 | (format "/EffectE %d def\n" | |
4513 | (ebnf-font-attributes ebnf-except-font)) | |
4514 | (format "/BorderWidthE %s def\n" | |
4515 | (ebnf-format-float ebnf-except-border-width)) | |
4516 | (ebnf-format-color "/BorderColorE %s def %% %s\n" | |
4517 | ebnf-except-border-color | |
4518 | "Black") | |
4519 | (format "/ShapeE %d def\n" | |
4520 | (ebnf-shape-value ebnf-except-shape | |
4521 | ebnf-terminal-shape-alist)) | |
4522 | (format "/ShadowE %s def\n" | |
4523 | (ebnf-boolean ebnf-except-shadow)) | |
4524 | ;; repeat | |
4525 | (format "/fR %s /%s DefFont\n" | |
4526 | (ebnf-format-float (ebnf-font-size ebnf-repeat-font)) | |
4527 | (ebnf-font-name-select ebnf-repeat-font)) | |
4528 | (ebnf-format-color "/ForegroundR %s def %% %s\n" | |
4529 | (ebnf-font-foreground ebnf-repeat-font) | |
4530 | "Black") | |
4531 | (ebnf-format-color "/BackgroundR %s def %% %s\n" | |
4532 | (ebnf-font-background ebnf-repeat-font) | |
4533 | "Gray85") | |
4534 | (format "/EffectR %d def\n" | |
4535 | (ebnf-font-attributes ebnf-repeat-font)) | |
4536 | (format "/BorderWidthR %s def\n" | |
4537 | (ebnf-format-float ebnf-repeat-border-width)) | |
4538 | (ebnf-format-color "/BorderColorR %s def %% %s\n" | |
4539 | ebnf-repeat-border-color | |
4540 | "Black") | |
4541 | (format "/ShapeR %d def\n" | |
4542 | (ebnf-shape-value ebnf-repeat-shape | |
4543 | ebnf-terminal-shape-alist)) | |
4544 | (format "/ShadowR %s def\n" | |
4545 | (ebnf-boolean ebnf-repeat-shadow)) | |
4546 | ;; miscellaneous | |
4547 | (format "/DefaultWidth %s def\n" | |
4548 | (ebnf-format-float ebnf-default-width)) | |
4549 | (format "/LineWidth %s def\n" | |
4550 | (ebnf-format-float ebnf-line-width)) | |
4551 | (ebnf-format-color "/LineColor %s def %% %s\n" | |
4552 | ebnf-line-color | |
4553 | "Black") | |
4554 | (format "/ArrowShape %d def\n" | |
4555 | (ebnf-shape-value ebnf-arrow-shape | |
4556 | ebnf-arrow-shape-alist)) | |
4557 | (format "/ChartShape %d def\n" | |
4558 | (ebnf-shape-value ebnf-chart-shape | |
4559 | ebnf-terminal-shape-alist)) | |
4560 | (format "/UserArrow{%s}def\n" | |
bf061ba6 GM |
4561 | (let ((arrow (eval ebnf-user-arrow))) |
4562 | (if (stringp arrow) | |
4563 | arrow | |
4564 | ""))) | |
984ae001 GM |
4565 | "\n% === end EBNF settings\n\n" |
4566 | (and ebnf-debug-ps ebnf-debug)))) | |
4567 | ebnf-prologue)) | |
4568 | ||
984ae001 GM |
4569 | \f |
4570 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
4571 | ;; Adjusting dimensions | |
4572 | ||
4573 | ||
4574 | (defun ebnf-dimensions (tree) | |
4575 | (let ((ebnf-total (length tree)) | |
4576 | (ebnf-nprod 0)) | |
4577 | (mapcar 'ebnf-production-dimension tree)) | |
4578 | tree) | |
4579 | ||
4580 | ||
4581 | ;; [empty width-fun dim-fun entry height width] | |
4582 | ;;(defun ebnf-empty-dimension (empty) | |
4583 | ;; ) | |
4584 | ||
4585 | ||
4586 | ;; [production width-fun dim-fun entry height width name production action] | |
4587 | (defun ebnf-production-dimension (production) | |
4588 | (ebnf-message-info "Calculating dimensions") | |
4589 | (ebnf-node-dimension-func (ebnf-node-production production)) | |
4590 | (let* ((prod (ebnf-node-production production)) | |
4591 | (height (+ ebnf-font-height-P | |
4592 | ebnf-basic-height | |
4593 | (ebnf-node-height prod)))) | |
4594 | (ebnf-node-entry production height) | |
4595 | (ebnf-node-height production height) | |
4596 | (ebnf-node-width production (+ (ebnf-node-width prod) | |
4597 | ebnf-horizontal-space)))) | |
4598 | ||
4599 | ||
4600 | ;; [terminal width-fun dim-fun entry height width name] | |
4601 | (defun ebnf-terminal-dimension (terminal) | |
4602 | (ebnf-terminal-dimension1 terminal | |
4603 | ebnf-font-height-T | |
4604 | ebnf-font-width-T | |
4605 | ebnf-space-T)) | |
4606 | ||
4607 | ||
4608 | ;; [non-terminal width-fun dim-fun entry height width name] | |
4609 | (defun ebnf-non-terminal-dimension (non-terminal) | |
4610 | (ebnf-terminal-dimension1 non-terminal | |
4611 | ebnf-font-height-NT | |
4612 | ebnf-font-width-NT | |
4613 | ebnf-space-NT)) | |
4614 | ||
4615 | ||
4616 | ;; [special width-fun dim-fun entry height width name] | |
4617 | (defun ebnf-special-dimension (special) | |
4618 | (ebnf-terminal-dimension1 special | |
4619 | ebnf-font-height-S | |
4620 | ebnf-font-width-S | |
4621 | ebnf-space-S)) | |
4622 | ||
4623 | ||
4624 | (defun ebnf-terminal-dimension1 (node font-height font-width space) | |
4625 | (let ((height (+ space font-height space)) | |
4626 | (len (length (ebnf-node-name node)))) | |
4627 | (ebnf-node-entry node (* height 0.5)) | |
4628 | (ebnf-node-height node height) | |
4629 | (ebnf-node-width node (+ ebnf-basic-width space | |
4630 | (* len font-width) | |
4631 | space ebnf-basic-width)))) | |
4632 | ||
4633 | ||
4634 | (defconst ebnf-null-vector (vector t t t 0.0 0.0 0.0)) | |
4635 | ||
4636 | ||
4637 | ;; [repeat width-fun dim-fun entry height width times element] | |
4638 | (defun ebnf-repeat-dimension (repeat) | |
4639 | (let ((times (ebnf-node-name repeat)) | |
4640 | (element (ebnf-node-separator repeat))) | |
4641 | (if element | |
4642 | (ebnf-node-dimension-func element) | |
4643 | (setq element ebnf-null-vector)) | |
4644 | (ebnf-node-entry repeat (+ (ebnf-node-entry element) | |
4645 | ebnf-space-R)) | |
4646 | (ebnf-node-height repeat (+ (max (ebnf-node-height element) | |
4647 | ebnf-font-height-S) | |
4648 | ebnf-space-R ebnf-space-R)) | |
4649 | (ebnf-node-width repeat (+ (ebnf-node-width element) | |
4650 | ebnf-space-R ebnf-space-R ebnf-space-R | |
4651 | ebnf-horizontal-space | |
4652 | (* (length times) ebnf-font-width-R))))) | |
4653 | ||
4654 | ||
4655 | ;; [except width-fun dim-fun entry height width element element] | |
4656 | (defun ebnf-except-dimension (except) | |
4657 | (let ((factor (ebnf-node-list except)) | |
4658 | (element (ebnf-node-separator except))) | |
4659 | (ebnf-node-dimension-func factor) | |
4660 | (if element | |
4661 | (ebnf-node-dimension-func element) | |
4662 | (setq element ebnf-null-vector)) | |
4663 | (ebnf-node-entry except (+ (max (ebnf-node-entry factor) | |
4664 | (ebnf-node-entry element)) | |
4665 | ebnf-space-E)) | |
4666 | (ebnf-node-height except (+ (max (ebnf-node-height factor) | |
4667 | (ebnf-node-height element)) | |
4668 | ebnf-space-E ebnf-space-E)) | |
4669 | (ebnf-node-width except (+ (ebnf-node-width factor) | |
4670 | (ebnf-node-width element) | |
4671 | ebnf-space-E ebnf-space-E | |
4672 | ebnf-space-E ebnf-space-E | |
4673 | ebnf-font-width-E | |
4674 | ebnf-horizontal-space)))) | |
4675 | ||
4676 | ||
4677 | ;; [alternative width-fun dim-fun entry height width list] | |
4678 | (defun ebnf-alternative-dimension (alternative) | |
4679 | (let ((body (ebnf-node-list alternative)) | |
4680 | (lis (ebnf-node-list alternative))) | |
4681 | (while lis | |
4682 | (ebnf-node-dimension-func (car lis)) | |
4683 | (setq lis (cdr lis))) | |
4684 | (let ((height 0.0) | |
4685 | (width 0.0) | |
4686 | (alt body) | |
4687 | (tail (car (last body))) | |
4688 | (entry (ebnf-node-entry (car body))) | |
4689 | node) | |
4690 | (while alt | |
4691 | (setq node (car alt) | |
4692 | alt (cdr alt) | |
4693 | height (+ (ebnf-node-height node) height) | |
4694 | width (max (ebnf-node-width node) width))) | |
4695 | (ebnf-adjust-width body width) | |
4696 | (setq height (+ height (* (1- (length body)) ebnf-vertical-space))) | |
4697 | (ebnf-node-entry alternative (+ entry | |
4698 | (ebnf-entry | |
4699 | (- height entry | |
4700 | (- (ebnf-node-height tail) | |
4701 | (ebnf-node-entry tail)))))) | |
4702 | (ebnf-node-height alternative height) | |
4703 | (ebnf-node-width alternative (+ width ebnf-horizontal-space)) | |
4704 | (ebnf-node-list alternative body)))) | |
4705 | ||
4706 | ||
4707 | ;; [optional width-fun dim-fun entry height width element] | |
4708 | (defun ebnf-optional-dimension (optional) | |
4709 | (let ((body (ebnf-node-list optional))) | |
4710 | (ebnf-node-dimension-func body) | |
4711 | (ebnf-node-entry optional (ebnf-node-entry body)) | |
4712 | (ebnf-node-height optional (+ (ebnf-node-height body) | |
4713 | ebnf-vertical-space)) | |
4714 | (ebnf-node-width optional (+ (ebnf-node-width body) | |
4715 | ebnf-horizontal-space)))) | |
4716 | ||
4717 | ||
4718 | ;; [one-or-more width-fun dim-fun entry height width element separator] | |
4719 | (defun ebnf-one-or-more-dimension (or-more) | |
4720 | (let ((list-part (ebnf-node-list or-more)) | |
4721 | (sep-part (ebnf-node-separator or-more))) | |
4722 | (ebnf-node-dimension-func list-part) | |
4723 | (and sep-part | |
4724 | (ebnf-node-dimension-func sep-part)) | |
4725 | (let ((height (+ (if sep-part | |
4726 | (ebnf-node-height sep-part) | |
4727 | 0.0) | |
4728 | ebnf-vertical-space | |
4729 | (ebnf-node-height list-part))) | |
4730 | (width (max (if sep-part | |
4731 | (ebnf-node-width sep-part) | |
4732 | 0.0) | |
4733 | (ebnf-node-width list-part)))) | |
4734 | (when sep-part | |
4735 | (ebnf-adjust-width list-part width) | |
4736 | (ebnf-adjust-width sep-part width)) | |
4737 | (ebnf-node-entry or-more (+ (- height (ebnf-node-height list-part)) | |
4738 | (ebnf-node-entry list-part))) | |
4739 | (ebnf-node-height or-more height) | |
4740 | (ebnf-node-width or-more (+ width ebnf-horizontal-space))))) | |
4741 | ||
4742 | ||
4743 | ;; [zero-or-more width-fun dim-fun entry height width element separator] | |
4744 | (defun ebnf-zero-or-more-dimension (or-more) | |
4745 | (let ((list-part (ebnf-node-list or-more)) | |
4746 | (sep-part (ebnf-node-separator or-more))) | |
4747 | (ebnf-node-dimension-func list-part) | |
4748 | (and sep-part | |
4749 | (ebnf-node-dimension-func sep-part)) | |
4750 | (let ((height (+ (if sep-part | |
4751 | (ebnf-node-height sep-part) | |
4752 | 0.0) | |
4753 | ebnf-vertical-space | |
4754 | (ebnf-node-height list-part) | |
4755 | ebnf-vertical-space)) | |
4756 | (width (max (if sep-part | |
4757 | (ebnf-node-width sep-part) | |
4758 | 0.0) | |
4759 | (ebnf-node-width list-part)))) | |
4760 | (when sep-part | |
4761 | (ebnf-adjust-width list-part width) | |
4762 | (ebnf-adjust-width sep-part width)) | |
4763 | (ebnf-node-entry or-more height) | |
4764 | (ebnf-node-height or-more height) | |
4765 | (ebnf-node-width or-more (+ width ebnf-horizontal-space))))) | |
4766 | ||
4767 | ||
4768 | ;; [sequence width-fun dim-fun entry height width list] | |
4769 | (defun ebnf-sequence-dimension (sequence) | |
4770 | (let ((above 0.0) | |
4771 | (below 0.0) | |
4772 | (width 0.0) | |
4773 | (lis (ebnf-node-list sequence)) | |
4774 | entry node) | |
4775 | (while lis | |
4776 | (setq node (car lis) | |
4777 | lis (cdr lis)) | |
4778 | (ebnf-node-dimension-func node) | |
4779 | (setq entry (ebnf-node-entry node) | |
4780 | above (max above entry) | |
4781 | below (max below (- (ebnf-node-height node) entry)) | |
4782 | width (+ width (ebnf-node-width node)))) | |
4783 | (ebnf-node-entry sequence above) | |
4784 | (ebnf-node-height sequence (+ above below)) | |
4785 | (ebnf-node-width sequence width))) | |
4786 | ||
4787 | \f | |
4788 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
4789 | ;; Adjusting width | |
4790 | ||
4791 | ||
4792 | (defun ebnf-adjust-width (node width) | |
4793 | (cond | |
4794 | ((listp node) | |
4795 | (prog1 | |
4796 | node | |
4797 | (while node | |
4798 | (setcar node (ebnf-adjust-width (car node) width)) | |
4799 | (setq node (cdr node))))) | |
4800 | ((vectorp node) | |
4801 | (cond | |
4802 | ;; nothing to be done | |
4803 | ((= width (ebnf-node-width node)) | |
4804 | node) | |
4805 | ;; left justify term | |
4806 | ((eq ebnf-justify-sequence 'left) | |
4807 | (ebnf-adjust-empty node width nil)) | |
4808 | ;; right justify terms | |
4809 | ((eq ebnf-justify-sequence 'right) | |
4810 | (ebnf-adjust-empty node width t)) | |
4811 | ;; centralize terms | |
4812 | (t | |
4813 | (ebnf-node-width-func node width) | |
4814 | (ebnf-node-width node width) | |
4815 | node) | |
4816 | )) | |
4817 | (t | |
4818 | node) | |
4819 | )) | |
4820 | ||
4821 | ||
4822 | (defun ebnf-adjust-empty (node width last-p) | |
4823 | (if (eq (ebnf-node-kind node) 'ebnf-generate-empty) | |
4824 | (progn | |
4825 | (ebnf-node-width node width) | |
4826 | node) | |
4827 | (let ((empty (ebnf-make-empty (- width (ebnf-node-width node))))) | |
4828 | (ebnf-make-dup-sequence node | |
4829 | (if last-p | |
4830 | (list empty node) | |
4831 | (list node empty)))))) | |
4832 | ||
4833 | ||
4834 | ;; [terminal width-fun dim-fun entry height width name] | |
4835 | ;; [non-terminal width-fun dim-fun entry height width name] | |
4836 | ;; [empty width-fun dim-fun entry height width] | |
4837 | ;; [special width-fun dim-fun entry height width name] | |
4838 | ;; [repeat width-fun dim-fun entry height width times element] | |
4839 | ;; [except width-fun dim-fun entry height width element element] | |
4840 | ;;(defun ebnf-terminal-width (terminal width) | |
4841 | ;; ) | |
4842 | ||
4843 | ||
4844 | ;; [alternative width-fun dim-fun entry height width list] | |
4845 | ;; [optional width-fun dim-fun entry height width element] | |
4846 | (defun ebnf-alternative-width (alternative width) | |
4847 | (ebnf-adjust-width (ebnf-node-list alternative) | |
4848 | (- width ebnf-horizontal-space))) | |
4849 | ||
4850 | ||
4851 | ;; [one-or-more width-fun dim-fun entry height width element separator] | |
4852 | ;; [zero-or-more width-fun dim-fun entry height width element separator] | |
4853 | (defun ebnf-list-width (or-more width) | |
4854 | (setq width (- width ebnf-horizontal-space)) | |
4855 | (ebnf-node-list or-more | |
4856 | (ebnf-justify-list or-more | |
4857 | (ebnf-node-list or-more) | |
4858 | width)) | |
4859 | (ebnf-node-separator or-more | |
4860 | (ebnf-justify-list or-more | |
4861 | (ebnf-node-separator or-more) | |
4862 | width))) | |
4863 | ||
4864 | ||
4865 | ;; [sequence width-fun dim-fun entry height width list] | |
4866 | (defun ebnf-sequence-width (sequence width) | |
4867 | (ebnf-node-list sequence | |
b685181e GM |
4868 | (ebnf-justify-list sequence |
4869 | (ebnf-node-list sequence) | |
4870 | width))) | |
984ae001 GM |
4871 | |
4872 | ||
4873 | (defun ebnf-justify-list (node seq width) | |
4874 | (let ((seq-width (ebnf-node-width node))) | |
4875 | (if (= width seq-width) | |
4876 | seq | |
4877 | (cond | |
4878 | ;; left justify terms | |
4879 | ((eq ebnf-justify-sequence 'left) | |
4880 | (ebnf-justify node seq seq-width width t)) | |
4881 | ;; right justify terms | |
4882 | ((eq ebnf-justify-sequence 'right) | |
4883 | (ebnf-justify node seq seq-width width nil)) | |
4884 | ;; centralize terms | |
4885 | (t | |
4886 | (let ((the-width (/ (- width seq-width) (length seq))) | |
4887 | (lis seq)) | |
4888 | (while lis | |
4889 | (ebnf-adjust-width (car lis) | |
4890 | (+ (ebnf-node-width (car lis)) | |
4891 | the-width)) | |
4892 | (setq lis (cdr lis))) | |
4893 | seq)) | |
4894 | )))) | |
4895 | ||
4896 | ||
4897 | (defun ebnf-justify (node seq seq-width width last-p) | |
4898 | (let ((term (car (if last-p (last seq) seq)))) | |
4899 | (cond | |
4900 | ;; adjust empty term | |
4901 | ((eq (ebnf-node-kind term) 'ebnf-generate-empty) | |
4902 | (ebnf-node-width term (+ (- width seq-width) | |
4903 | (ebnf-node-width term))) | |
4904 | seq) | |
4905 | ;; insert empty at end ==> left justify | |
4906 | (last-p | |
4907 | (nconc seq | |
4908 | (list (ebnf-make-empty (- width seq-width))))) | |
4909 | ;; insert empty at beginning ==> right justify | |
4910 | (t | |
4911 | (cons (ebnf-make-empty (- width seq-width)) | |
4912 | seq)) | |
4913 | ))) | |
4914 | ||
4915 | \f | |
4916 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
4917 | ;; Functions used by parsers | |
4918 | ||
4919 | ||
4920 | (defun ebnf-eps-add-context (name) | |
4921 | (let ((filename (ebnf-eps-filename name))) | |
4922 | (if (member filename ebnf-eps-context) | |
4923 | (error "Try to open an already opened EPS file: %s" filename) | |
4924 | (setq ebnf-eps-context (cons filename ebnf-eps-context))))) | |
4925 | ||
4926 | ||
4927 | (defun ebnf-eps-remove-context (name) | |
4928 | (let ((filename (ebnf-eps-filename name))) | |
4929 | (if (member filename ebnf-eps-context) | |
4930 | (setq ebnf-eps-context (delete filename ebnf-eps-context)) | |
4931 | (error "Try to close a not opened EPS file: %s" filename)))) | |
4932 | ||
4933 | ||
4934 | (defun ebnf-eps-add-production (header) | |
4935 | (and ebnf-eps-executing | |
4936 | ebnf-eps-context | |
4937 | (let ((prod (assoc header ebnf-eps-production-list))) | |
4938 | (if prod | |
4939 | (setcdr prod (append ebnf-eps-context (cdr prod))) | |
4940 | (setq ebnf-eps-production-list | |
4941 | (cons (cons header (ebnf-dup-list ebnf-eps-context)) | |
4942 | ebnf-eps-production-list)))))) | |
4943 | ||
4944 | ||
4945 | (defun ebnf-dup-list (old) | |
4946 | (let (new) | |
4947 | (while old | |
4948 | (setq new (cons (car old) new) | |
4949 | old (cdr old))) | |
4950 | (nreverse new))) | |
4951 | ||
4952 | ||
4953 | (defun ebnf-buffer-substring (chars) | |
4954 | (buffer-substring-no-properties | |
4955 | (point) | |
4956 | (progn | |
4957 | (skip-chars-forward chars ebnf-limit) | |
4958 | (point)))) | |
4959 | ||
4960 | ||
6a5275dc GM |
4961 | ;; replace the range "\240-\377" (see `ebnf-range-regexp'). |
4962 | (defconst ebnf-8-bit-chars (ebnf-range-regexp "" ?\240 ?\377)) | |
5268b442 GM |
4963 | |
4964 | ||
984ae001 GM |
4965 | (defun ebnf-string (chars eos-char kind) |
4966 | (forward-char) | |
4967 | (buffer-substring-no-properties | |
4968 | (point) | |
4969 | (progn | |
5268b442 GM |
4970 | ;;(skip-chars-forward (concat chars "\240-\377") ebnf-limit) |
4971 | (skip-chars-forward (concat chars ebnf-8-bit-chars) ebnf-limit) | |
984ae001 | 4972 | (if (or (eobp) (/= (following-char) eos-char)) |
e8af40ee | 4973 | (error "Illegal %s: missing `%c'" kind eos-char) |
984ae001 GM |
4974 | (forward-char) |
4975 | (1- (point)))))) | |
4976 | ||
4977 | ||
4978 | (defun ebnf-get-string () | |
4979 | (forward-char) | |
4980 | (buffer-substring-no-properties (point) (ebnf-end-of-string))) | |
4981 | ||
4982 | ||
4983 | (defun ebnf-end-of-string () | |
4984 | (let ((n 1)) | |
4985 | (while (> (logand n 1) 0) | |
4986 | (skip-chars-forward "^\"" ebnf-limit) | |
4987 | (setq n (- (skip-chars-backward "\\\\"))) | |
4988 | (goto-char (+ (point) n 1)))) | |
4989 | (if (= (preceding-char) ?\") | |
4990 | (1- (point)) | |
e8af40ee | 4991 | (error "Missing `\"'"))) |
984ae001 GM |
4992 | |
4993 | ||
4994 | (defun ebnf-trim-right (str) | |
4995 | (let* ((len (1- (length str))) | |
4996 | (index len)) | |
4997 | (while (and (> index 0) (= (aref str index) ?\ )) | |
4998 | (setq index (1- index))) | |
4999 | (if (= index len) | |
5000 | str | |
5001 | (substring str 0 (1+ index))))) | |
5002 | ||
5003 | \f | |
5004 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
5005 | ;; Vector creation | |
5006 | ||
5007 | ||
5008 | (defun ebnf-make-empty (&optional width) | |
5009 | (vector 'ebnf-generate-empty | |
5010 | 'ignore | |
5011 | 'ignore | |
5012 | 0.0 | |
5013 | 0.0 | |
5014 | (or width ebnf-horizontal-space))) | |
5015 | ||
5016 | ||
5017 | (defun ebnf-make-terminal (name) | |
5018 | (ebnf-make-terminal1 name | |
5019 | 'ebnf-generate-terminal | |
5020 | 'ebnf-terminal-dimension)) | |
5021 | ||
5022 | ||
5023 | (defun ebnf-make-non-terminal (name) | |
5024 | (ebnf-make-terminal1 name | |
5025 | 'ebnf-generate-non-terminal | |
5026 | 'ebnf-non-terminal-dimension)) | |
5027 | ||
5028 | ||
5029 | (defun ebnf-make-special (name) | |
5030 | (ebnf-make-terminal1 name | |
5031 | 'ebnf-generate-special | |
5032 | 'ebnf-special-dimension)) | |
5033 | ||
5034 | ||
5035 | (defun ebnf-make-terminal1 (name gen-func dim-func) | |
5036 | (vector gen-func | |
5037 | 'ignore | |
5038 | dim-func | |
5039 | 0.0 | |
5040 | 0.0 | |
5041 | 0.0 | |
5042 | (let ((len (length name))) | |
5043 | (cond ((> len 2) name) | |
5044 | ((= len 2) (concat " " name)) | |
5045 | ((= len 1) (concat " " name " ")) | |
5046 | (t " "))) | |
5047 | ebnf-default-p)) | |
5048 | ||
5049 | ||
5050 | (defun ebnf-make-one-or-more (list-part &optional sep-part) | |
5051 | (ebnf-make-or-more1 'ebnf-generate-one-or-more | |
5052 | 'ebnf-one-or-more-dimension | |
5053 | list-part | |
5054 | sep-part)) | |
5055 | ||
5056 | ||
5057 | (defun ebnf-make-zero-or-more (list-part &optional sep-part) | |
5058 | (ebnf-make-or-more1 'ebnf-generate-zero-or-more | |
5059 | 'ebnf-zero-or-more-dimension | |
5060 | list-part | |
5061 | sep-part)) | |
5062 | ||
5063 | ||
5064 | (defun ebnf-make-or-more1 (gen-func dim-func list-part sep-part) | |
5065 | (vector gen-func | |
5066 | 'ebnf-list-width | |
5067 | dim-func | |
5068 | 0.0 | |
5069 | 0.0 | |
5070 | 0.0 | |
5071 | (if (listp list-part) | |
5072 | (ebnf-make-sequence list-part) | |
5073 | list-part) | |
5074 | (if (and sep-part (listp sep-part)) | |
5075 | (ebnf-make-sequence sep-part) | |
5076 | sep-part))) | |
5077 | ||
5078 | ||
5079 | (defun ebnf-make-production (name prod action) | |
5080 | (vector 'ebnf-generate-production | |
5081 | 'ignore | |
5082 | 'ebnf-production-dimension | |
5083 | 0.0 | |
5084 | 0.0 | |
5085 | 0.0 | |
5086 | name | |
5087 | prod | |
5088 | action)) | |
5089 | ||
5090 | ||
5091 | (defun ebnf-make-alternative (body) | |
5092 | (vector 'ebnf-generate-alternative | |
5093 | 'ebnf-alternative-width | |
5094 | 'ebnf-alternative-dimension | |
5095 | 0.0 | |
5096 | 0.0 | |
5097 | 0.0 | |
5098 | body)) | |
5099 | ||
5100 | ||
5101 | (defun ebnf-make-optional (body) | |
5102 | (vector 'ebnf-generate-optional | |
5103 | 'ebnf-alternative-width | |
5104 | 'ebnf-optional-dimension | |
5105 | 0.0 | |
5106 | 0.0 | |
5107 | 0.0 | |
5108 | body)) | |
5109 | ||
5110 | ||
5111 | (defun ebnf-make-except (factor exception) | |
5112 | (vector 'ebnf-generate-except | |
5113 | 'ignore | |
5114 | 'ebnf-except-dimension | |
5115 | 0.0 | |
5116 | 0.0 | |
5117 | 0.0 | |
5118 | factor | |
5119 | exception)) | |
5120 | ||
5121 | ||
5122 | (defun ebnf-make-repeat (times primary) | |
5123 | (vector 'ebnf-generate-repeat | |
5124 | 'ignore | |
5125 | 'ebnf-repeat-dimension | |
5126 | 0.0 | |
5127 | 0.0 | |
5128 | 0.0 | |
5129 | (concat times " *") | |
5130 | primary)) | |
5131 | ||
5132 | ||
5133 | (defun ebnf-make-sequence (seq) | |
5134 | (vector 'ebnf-generate-sequence | |
5135 | 'ebnf-sequence-width | |
5136 | 'ebnf-sequence-dimension | |
5137 | 0.0 | |
5138 | 0.0 | |
5139 | 0.0 | |
5140 | seq)) | |
5141 | ||
5142 | ||
5143 | (defun ebnf-make-dup-sequence (node seq) | |
5144 | (vector 'ebnf-generate-sequence | |
5145 | 'ebnf-sequence-width | |
5146 | 'ebnf-sequence-dimension | |
5147 | (ebnf-node-entry node) | |
5148 | (ebnf-node-height node) | |
5149 | (ebnf-node-width node) | |
5150 | seq)) | |
5151 | ||
5152 | \f | |
5153 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
5154 | ;; Optimizers used by parsers | |
5155 | ||
5156 | ||
5157 | (defun ebnf-token-except (element exception) | |
5158 | (cons (prog1 | |
5159 | (car exception) | |
5160 | (setq exception (cdr exception))) | |
5161 | (and element ; EMPTY - A ==> EMPTY | |
5162 | (let ((kind (ebnf-node-kind element))) | |
5163 | (cond | |
5164 | ;; [ A ]- ==> A | |
5165 | ((and (null exception) | |
5166 | (eq kind 'ebnf-generate-optional)) | |
5167 | (ebnf-node-list element)) | |
5168 | ;; { A }- ==> { A }+ | |
5169 | ((and (null exception) | |
5170 | (eq kind 'ebnf-generate-zero-or-more)) | |
5171 | (ebnf-node-kind element 'ebnf-generate-one-or-more) | |
5172 | (ebnf-node-dimension-func element 'ebnf-one-or-more-dimension) | |
5173 | element) | |
5174 | ;; ( A | EMPTY )- ==> A | |
5175 | ;; ( A | B | EMPTY )- ==> A | B | |
5176 | ((and (null exception) | |
5177 | (eq kind 'ebnf-generate-alternative) | |
b685181e GM |
5178 | (eq (ebnf-node-kind |
5179 | (car (last (ebnf-node-list element)))) | |
984ae001 GM |
5180 | 'ebnf-generate-empty)) |
5181 | (let ((elt (ebnf-node-list element)) | |
5182 | bef) | |
5183 | (while (cdr elt) | |
5184 | (setq bef elt | |
5185 | elt (cdr elt))) | |
5186 | (if (null bef) | |
5187 | ;; this should not happen!!?! | |
5188 | (setq element (ebnf-make-empty | |
5189 | (ebnf-node-width element))) | |
5190 | (setcdr bef nil) | |
5191 | (setq elt (ebnf-node-list element)) | |
5192 | (and (= (length elt) 1) | |
5193 | (setq element (car elt)))) | |
5194 | element)) | |
5195 | ;; A - B | |
5196 | (t | |
5197 | (ebnf-make-except element exception)) | |
5198 | ))))) | |
5199 | ||
5200 | ||
5201 | (defun ebnf-token-repeat (times repeat) | |
5202 | (if (null (cdr repeat)) | |
5203 | ;; n * EMPTY ==> EMPTY | |
5204 | repeat | |
5205 | ;; n * term | |
5206 | (cons (car repeat) | |
5207 | (ebnf-make-repeat times (cdr repeat))))) | |
5208 | ||
5209 | ||
5210 | (defun ebnf-token-optional (body) | |
5211 | (let ((kind (ebnf-node-kind body))) | |
5212 | (cond | |
5213 | ;; [ EMPTY ] ==> EMPTY | |
5214 | ((eq kind 'ebnf-generate-empty) | |
5215 | nil) | |
5216 | ;; [ { A }* ] ==> { A }* | |
5217 | ((eq kind 'ebnf-generate-zero-or-more) | |
5218 | body) | |
5219 | ;; [ { A }+ ] ==> { A }* | |
5220 | ((eq kind 'ebnf-generate-one-or-more) | |
5221 | (ebnf-node-kind body 'ebnf-generate-zero-or-more) | |
5222 | body) | |
5223 | ;; [ A | B ] ==> A | B | EMPTY | |
5224 | ((eq kind 'ebnf-generate-alternative) | |
5225 | (ebnf-node-list body (nconc (ebnf-node-list body) | |
5226 | (list (ebnf-make-empty)))) | |
5227 | body) | |
5228 | ;; [ A ] | |
5229 | (t | |
5230 | (ebnf-make-optional body)) | |
5231 | ))) | |
5232 | ||
5233 | ||
5234 | (defun ebnf-token-alternative (body sequence) | |
5235 | (if (null body) | |
5236 | (if (cdr sequence) | |
5237 | sequence | |
5238 | (cons (car sequence) | |
5239 | (ebnf-make-empty))) | |
5240 | (cons (car sequence) | |
5241 | (let ((seq (cdr sequence))) | |
5242 | (if (and (= (length body) 1) (null seq)) | |
5243 | (car body) | |
5244 | (ebnf-make-alternative (nreverse (if seq | |
5245 | (cons seq body) | |
5246 | body)))))))) | |
5247 | ||
5248 | \f | |
5249 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
5250 | ;; Variables used by parsers | |
5251 | ||
5252 | ||
5253 | (defconst ebnf-comment-table | |
5254 | (let ((table (make-vector 256 nil))) | |
5255 | ;; Override special comment character: | |
5256 | (aset table ?< 'newline) | |
5257 | (aset table ?> 'keep-line) | |
5258 | table) | |
5259 | "Vector used to map characters to a special comment token.") | |
5260 | ||
5261 | \f | |
5262 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
5263 | ;; To make this file smaller, some commands go in a separate file. | |
5264 | ;; But autoload them here to make the separation invisible. | |
5265 | ||
5266 | (autoload 'ebnf-bnf-parser "ebnf-bnf" | |
5267 | "EBNF parser.") | |
5268 | ||
5269 | (autoload 'ebnf-bnf-initialize "ebnf-bnf" | |
5270 | "Initialize EBNF token table.") | |
5271 | ||
5272 | (autoload 'ebnf-iso-parser "ebnf-iso" | |
5273 | "ISO EBNF parser.") | |
5274 | ||
5275 | (autoload 'ebnf-iso-initialize "ebnf-iso" | |
5276 | "Initialize ISO EBNF token table.") | |
5277 | ||
5278 | (autoload 'ebnf-yac-parser "ebnf-yac" | |
5279 | "Yacc/Bison parser.") | |
5280 | ||
5281 | (autoload 'ebnf-yac-initialize "ebnf-yac" | |
5282 | "Initializations for Yacc/Bison parser.") | |
5283 | ||
5284 | (autoload 'ebnf-eliminate-empty-rules "ebnf-otz" | |
5285 | "Eliminate empty rules.") | |
5286 | ||
5287 | (autoload 'ebnf-optimize "ebnf-otz" | |
ab3256ed | 5288 | "Syntactic chart optimizer.") |
984ae001 GM |
5289 | |
5290 | (autoload 'ebnf-otz-initialize "ebnf-otz" | |
5291 | "Initialize optimizer.") | |
5292 | ||
5293 | \f | |
5294 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
5295 | ||
5296 | ||
5297 | (provide 'ebnf2ps) | |
5298 | ||
ab5796a9 | 5299 | ;;; arch-tag: 148bc8af-5398-468b-b922-eeb7afef3e4f |
984ae001 | 5300 | ;;; ebnf2ps.el ends here |