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ab3256ed | 1 | ;;; ebnf2ps.el --- translate an EBNF to a syntactic chart on PostScript |
984ae001 | 2 | |
114f9c96 | 3 | ;; Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
3ced5caa | 4 | ;; Free Software Foundation, Inc. |
984ae001 | 5 | |
ac4780a1 VJL |
6 | ;; Author: Vinicius Jose Latorre <viniciusjl@ig.com.br> |
7 | ;; Maintainer: Vinicius Jose Latorre <viniciusjl@ig.com.br> | |
0b5ecd6d | 8 | ;; Keywords: wp, ebnf, PostScript |
3ced5caa | 9 | ;; Version: 4.4 |
502ca00a | 10 | ;; X-URL: http://www.emacswiki.org/cgi-bin/wiki/ViniciusJoseLatorre |
984ae001 | 11 | |
8d9ea7b1 | 12 | ;; This file is part of GNU Emacs. |
984ae001 | 13 | |
b1fc2b50 | 14 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
984ae001 | 15 | ;; it under the terms of the GNU General Public License as published by |
b1fc2b50 GM |
16 | ;; the Free Software Foundation, either version 3 of the License, or |
17 | ;; (at your option) any later version. | |
984ae001 | 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 | |
b1fc2b50 | 25 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
984ae001 | 26 | |
3ced5caa VJL |
27 | (defconst ebnf-version "4.4" |
28 | "ebnf2ps.el, v 4.4 <2007/02/12 vinicius> | |
8d9ea7b1 GM |
29 | |
30 | Vinicius's last change version. When reporting bugs, please also | |
31 | report the version of Emacs, if any, that ebnf2ps was running with. | |
32 | ||
33 | Please send all bug fixes and enhancements to | |
ac4780a1 | 34 | Vinicius Jose Latorre <viniciusjl@ig.com.br>. |
8d9ea7b1 GM |
35 | ") |
36 | ||
37 | ||
984ae001 GM |
38 | ;;; Commentary: |
39 | ||
40 | ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
41 | ;; | |
42 | ;; Introduction | |
43 | ;; ------------ | |
44 | ;; | |
ab3256ed | 45 | ;; This package translates an EBNF to a syntactic chart on PostScript. |
984ae001 GM |
46 | ;; |
47 | ;; To use ebnf2ps, insert in your ~/.emacs: | |
48 | ;; | |
49 | ;; (require 'ebnf2ps) | |
50 | ;; | |
b685181e GM |
51 | ;; ebnf2ps uses ps-print package (version 5.2.3 or later), so see ps-print to |
52 | ;; know how to set options like landscape printing, page headings, margins, | |
53 | ;; etc. | |
984ae001 GM |
54 | ;; |
55 | ;; NOTE: ps-print zebra stripes and line number options doesn't have effect on | |
56 | ;; ebnf2ps, they behave as it's turned off. | |
57 | ;; | |
58 | ;; For good performance, be sure to byte-compile ebnf2ps.el, e.g. | |
59 | ;; | |
60 | ;; M-x byte-compile-file <give the path to ebnf2ps.el when prompted> | |
61 | ;; | |
62 | ;; This will generate ebnf2ps.elc, which will be loaded instead of ebnf2ps.el. | |
63 | ;; | |
64 | ;; ebnf2ps was tested with GNU Emacs 20.4.1. | |
65 | ;; | |
66 | ;; | |
67 | ;; Using ebnf2ps | |
68 | ;; ------------- | |
69 | ;; | |
cc86f83f VJL |
70 | ;; ebnf2ps provides the following commands for generating PostScript syntactic |
71 | ;; chart images of Emacs buffers: | |
984ae001 | 72 | ;; |
ed0aa46c VJL |
73 | ;; ebnf-print-directory |
74 | ;; ebnf-print-file | |
75 | ;; ebnf-print-buffer | |
76 | ;; ebnf-print-region | |
77 | ;; ebnf-spool-directory | |
78 | ;; ebnf-spool-file | |
79 | ;; ebnf-spool-buffer | |
80 | ;; ebnf-spool-region | |
81 | ;; ebnf-eps-directory | |
82 | ;; ebnf-eps-file | |
83 | ;; ebnf-eps-buffer | |
84 | ;; ebnf-eps-region | |
984ae001 GM |
85 | ;; |
86 | ;; These commands all perform essentially the same function: they generate | |
ab3256ed | 87 | ;; PostScript syntactic chart images suitable for printing on a PostScript |
984ae001 GM |
88 | ;; printer or displaying with GhostScript. These commands are collectively |
89 | ;; referred to as "ebnf- commands". | |
90 | ;; | |
91 | ;; The word "print", "spool" and "eps" in the command name determines when the | |
92 | ;; PostScript image is sent to the printer (or file): | |
93 | ;; | |
ed0aa46c | 94 | ;; print - The PostScript image is immediately sent to the printer; |
984ae001 | 95 | ;; |
ed0aa46c VJL |
96 | ;; spool - The PostScript image is saved temporarily in an Emacs buffer. |
97 | ;; Many images may be spooled locally before printing them. To | |
98 | ;; send the spooled images to the printer, use the command | |
99 | ;; `ebnf-despool'. | |
984ae001 | 100 | ;; |
4303661c | 101 | ;; eps - The PostScript image is immediately sent to an EPS file. |
984ae001 GM |
102 | ;; |
103 | ;; The spooling mechanism is the same as used by ps-print and was designed for | |
104 | ;; printing lots of small files to save paper that would otherwise be wasted on | |
105 | ;; banner pages, and to make it easier to find your output at the printer (it's | |
106 | ;; easier to pick up one 50-page printout than to find 50 single-page | |
107 | ;; printouts). As ebnf2ps and ps-print use the same Emacs buffer to spool | |
108 | ;; images, you can intermix the spooling of ebnf2ps and ps-print images. | |
109 | ;; | |
110 | ;; ebnf2ps use the same hook of ps-print in the `kill-emacs-hook' so that you | |
111 | ;; won't accidentally quit from Emacs while you have unprinted PostScript | |
112 | ;; waiting in the spool buffer. If you do attempt to exit with spooled | |
113 | ;; PostScript, you'll be asked if you want to print it, and if you decline, | |
b685181e GM |
114 | ;; you'll be asked to confirm the exit; this is modeled on the confirmation |
115 | ;; that Emacs uses for modified buffers. | |
984ae001 | 116 | ;; |
ac4780a1 VJL |
117 | ;; The word "directory", "file", "buffer" or "region" in the command name |
118 | ;; determines how much of the buffer is printed: | |
984ae001 | 119 | ;; |
ed0aa46c | 120 | ;; directory - Read files in the directory and print them. |
984ae001 | 121 | ;; |
ed0aa46c | 122 | ;; file - Read file and print it. |
ac4780a1 | 123 | ;; |
ed0aa46c | 124 | ;; buffer - Print the entire buffer. |
ac4780a1 | 125 | ;; |
ed0aa46c | 126 | ;; region - Print just the current region. |
984ae001 GM |
127 | ;; |
128 | ;; Two ebnf- command examples: | |
129 | ;; | |
ed0aa46c VJL |
130 | ;; ebnf-print-buffer - translate and print the entire buffer, and send it |
131 | ;; immediately to the printer. | |
984ae001 | 132 | ;; |
ed0aa46c VJL |
133 | ;; ebnf-spool-region - translate and print just the current region, and |
134 | ;; spool the image in Emacs to send to the printer | |
135 | ;; later. | |
984ae001 | 136 | ;; |
ac4780a1 VJL |
137 | ;; Note that `ebnf-eps-directory', `ebnf-eps-file', `ebnf-eps-buffer' and |
138 | ;; `ebnf-eps-region' never spool the EPS image, so they don't use the ps-print | |
139 | ;; spooling mechanism. See section "Actions in Comments" for an explanation | |
140 | ;; about EPS file generation. | |
984ae001 GM |
141 | ;; |
142 | ;; | |
143 | ;; Invoking Ebnf2ps | |
144 | ;; ---------------- | |
145 | ;; | |
146 | ;; To translate and print your buffer, type | |
147 | ;; | |
ed0aa46c | 148 | ;; M-x ebnf-print-buffer |
984ae001 GM |
149 | ;; |
150 | ;; or substitute one of the other four ebnf- commands. The command will | |
151 | ;; generate the PostScript image and print or spool it as specified. By giving | |
152 | ;; the command a prefix argument | |
153 | ;; | |
ed0aa46c | 154 | ;; C-u M-x ebnf-print-buffer |
984ae001 GM |
155 | ;; |
156 | ;; it will save the PostScript image to a file instead of sending it to the | |
157 | ;; printer; you will be prompted for the name of the file to save the image to. | |
158 | ;; The prefix argument is ignored by the commands that spool their images, but | |
159 | ;; you may save the spooled images to a file by giving a prefix argument to | |
160 | ;; `ebnf-despool': | |
161 | ;; | |
ed0aa46c | 162 | ;; C-u M-x ebnf-despool |
984ae001 GM |
163 | ;; |
164 | ;; When invoked this way, `ebnf-despool' will prompt you for the name of the | |
165 | ;; file to save to. | |
166 | ;; | |
167 | ;; The prefix argument is also ignored by `ebnf-eps-buffer' and | |
168 | ;; `ebnf-eps-region'. | |
169 | ;; | |
170 | ;; Any of the `ebnf-' commands can be bound to keys. Here are some examples: | |
171 | ;; | |
ed0aa46c VJL |
172 | ;; (global-set-key 'f22 'ebnf-print-buffer) ;f22 is prsc |
173 | ;; (global-set-key '(shift f22) 'ebnf-print-region) | |
174 | ;; (global-set-key '(control f22) 'ebnf-despool) | |
984ae001 GM |
175 | ;; |
176 | ;; | |
6411a60a VJL |
177 | ;; Invoking Ebnf2ps in Batch |
178 | ;; ------------------------- | |
179 | ;; | |
180 | ;; It's possible also to run ebnf2ps in batch, this is useful when, for | |
181 | ;; example, you have a directory with a lot of files containing the EBNF to be | |
182 | ;; translated to PostScript. | |
183 | ;; | |
184 | ;; To run ebnf2ps in batch type, for example: | |
185 | ;; | |
186 | ;; emacs -batch -l setup-ebnf2ps.el -f ebnf-eps-directory | |
187 | ;; | |
188 | ;; Where setup-ebnf2ps.el should be a file containing: | |
189 | ;; | |
190 | ;; ;; set load-path if ebnf2ps isn't installed in your Emacs environment | |
191 | ;; (setq load-path (append (list "/dir/of/ebnf2ps") load-path)) | |
192 | ;; (require 'ebnf2ps) | |
193 | ;; ;; insert here your ebnf2ps settings | |
194 | ;; (setq ebnf-terminal-shape 'bevel) | |
195 | ;; ;; etc. | |
196 | ;; | |
197 | ;; | |
984ae001 GM |
198 | ;; EBNF Syntax |
199 | ;; ----------- | |
200 | ;; | |
6411a60a VJL |
201 | ;; BNF (Backus Naur Form) notation is defined like languages, and like |
202 | ;; languages there are rules about name formation and syntax. In this section | |
203 | ;; it's defined a BNF syntax that it's called simply EBNF (Extended BNF). | |
204 | ;; ebnf2ps package also deal with other BNF notation. Please, see the variable | |
205 | ;; `ebnf-syntax' documentation below in this section. | |
206 | ;; | |
984ae001 GM |
207 | ;; The current EBNF that ebnf2ps accepts has the following constructions: |
208 | ;; | |
209 | ;; ; comment (until end of line) | |
210 | ;; A non-terminal | |
211 | ;; "C" terminal | |
212 | ;; ?C? special | |
213 | ;; $A default non-terminal (see text below) | |
214 | ;; $"C" default terminal (see text below) | |
215 | ;; $?C? default special (see text below) | |
216 | ;; A = B. production (A is the header and B the body) | |
217 | ;; C D sequence (C occurs before D) | |
218 | ;; C | D alternative (C or D occurs) | |
219 | ;; A - B exception (A excluding B, B without any non-terminal) | |
7fd08a0a VJL |
220 | ;; n * A repetition (A repeats at least n (integer) times) |
221 | ;; n * n A repetition (A repeats exactly n (integer) times) | |
222 | ;; n * m A repetition (A repeats at least n (integer) and at most | |
223 | ;; m (integer) times) | |
984ae001 GM |
224 | ;; (C) group (expression C is grouped together) |
225 | ;; [C] optional (C may or not occurs) | |
226 | ;; C+ one or more occurrences of C | |
227 | ;; {C}+ one or more occurrences of C | |
228 | ;; {C}* zero or more occurrences of C | |
229 | ;; {C} zero or more occurrences of C | |
230 | ;; C / D equivalent to: C {D C}* | |
231 | ;; {C || D}+ equivalent to: C {D C}* | |
232 | ;; {C || D}* equivalent to: [C {D C}*] | |
233 | ;; {C || D} equivalent to: [C {D C}*] | |
234 | ;; | |
235 | ;; The EBNF syntax written using the notation above is: | |
236 | ;; | |
237 | ;; EBNF = {production}+. | |
238 | ;; | |
239 | ;; production = non_terminal "=" body ".". ;; production | |
240 | ;; | |
241 | ;; body = {sequence || "|"}*. ;; alternative | |
242 | ;; | |
243 | ;; sequence = {exception}*. ;; sequence | |
244 | ;; | |
245 | ;; exception = repeat [ "-" repeat]. ;; exception | |
246 | ;; | |
7fd08a0a | 247 | ;; repeat = [ integer "*" [ integer ]] term. ;; repetition |
984ae001 GM |
248 | ;; |
249 | ;; term = factor | |
250 | ;; | [factor] "+" ;; one-or-more | |
251 | ;; | [factor] "/" [factor] ;; one-or-more | |
252 | ;; . | |
253 | ;; | |
254 | ;; factor = [ "$" ] "\"" terminal "\"" ;; terminal | |
255 | ;; | [ "$" ] non_terminal ;; non-terminal | |
256 | ;; | [ "$" ] "?" special "?" ;; special | |
257 | ;; | "(" body ")" ;; group | |
258 | ;; | "[" body "]" ;; zero-or-one | |
259 | ;; | "{" body [ "||" body ] "}+" ;; one-or-more | |
260 | ;; | "{" body [ "||" body ] "}*" ;; zero-or-more | |
261 | ;; | "{" body [ "||" body ] "}" ;; zero-or-more | |
262 | ;; . | |
263 | ;; | |
0b5ecd6d | 264 | ;; non_terminal = "[!#%&'*-,0-:<>@-Z\\\\^-z~\\240-\\377]+". |
ac4780a1 VJL |
265 | ;; ;; that is, a valid non_terminal accepts decimal digits, letters (upper |
266 | ;; ;; and lower), 8-bit accentuated characters, | |
267 | ;; ;; "!", "#", "%", "&", "'", "*", "+", ",", ":", | |
268 | ;; ;; "<", ">", "@", "\", "^", "_", "`" and "~". | |
984ae001 GM |
269 | ;; |
270 | ;; terminal = "\\([^\"\\]\\|\\\\[ -~\\240-\\377]\\)+". | |
ac4780a1 VJL |
271 | ;; ;; that is, a valid terminal accepts any printable character (including |
272 | ;; ;; 8-bit accentuated characters) except `"', as `"' is used to delimit a | |
273 | ;; ;; terminal. Also, accepts escaped characters, that is, a character | |
274 | ;; ;; pair starting with `\' followed by a printable character, for | |
6f19f70a | 275 | ;; ;; example: \", \\. |
984ae001 | 276 | ;; |
ac4780a1 VJL |
277 | ;; special = "[^?\\000-\\010\\012-\\037\\177-\\237]*". |
278 | ;; ;; that is, a valid special accepts any printable character (including | |
279 | ;; ;; 8-bit accentuated characters) and tabs except `?', as `?' is used to | |
280 | ;; ;; delimit a special. | |
984ae001 GM |
281 | ;; |
282 | ;; integer = "[0-9]+". | |
ac4780a1 | 283 | ;; ;; that is, an integer is a sequence of one or more decimal digits. |
984ae001 GM |
284 | ;; |
285 | ;; comment = ";" "[^\\n\\000-\\010\\016-\\037\\177-\\237]*" "\\n". | |
ac4780a1 VJL |
286 | ;; ;; that is, a comment starts with the character `;' and terminates at end |
287 | ;; ;; of line. Also, it only accepts printable characters (including 8-bit | |
288 | ;; ;; accentuated characters) and tabs. | |
984ae001 GM |
289 | ;; |
290 | ;; Try to use the above EBNF to test ebnf2ps. | |
291 | ;; | |
292 | ;; The `default' terminal, non-terminal and special is a way to indicate a | |
293 | ;; default path in a production. For example, the production: | |
294 | ;; | |
295 | ;; X = [ $A ( B | $C ) | D ]. | |
296 | ;; | |
297 | ;; Indicates that the default meaning for "X" is "A C" if "X" is empty. | |
298 | ;; | |
299 | ;; The terminal name is controlled by `ebnf-terminal-regexp' and | |
300 | ;; `ebnf-case-fold-search', so it's possible to match other kind of terminal | |
301 | ;; name besides that enclosed by `"'. | |
302 | ;; | |
303 | ;; Let's see an example: | |
304 | ;; | |
305 | ;; (setq ebnf-terminal-regexp "[A-Z][_A-Z]*") ; upper case name | |
306 | ;; (setq ebnf-case-fold-search nil) ; exact matching | |
307 | ;; | |
308 | ;; If you have the production: | |
309 | ;; | |
310 | ;; Logical = "(" Expression ( OR | AND | "XOR" ) Expression ")". | |
311 | ;; | |
312 | ;; The names are classified as: | |
313 | ;; | |
314 | ;; Logical Expression non-terminal | |
315 | ;; "(" OR AND "XOR" ")" terminal | |
316 | ;; | |
b685181e GM |
317 | ;; The line comment is controlled by `ebnf-lex-comment-char'. The default |
318 | ;; value is ?\; (character `;'). | |
984ae001 GM |
319 | ;; |
320 | ;; The end of production is controlled by `ebnf-lex-eop-char'. The default | |
321 | ;; value is ?. (character `.'). | |
322 | ;; | |
323 | ;; The variable `ebnf-syntax' specifies which syntax to recognize: | |
324 | ;; | |
325 | ;; `ebnf' ebnf2ps recognizes the syntax described above. | |
326 | ;; The following variables *ONLY* have effect with this | |
327 | ;; setting: | |
328 | ;; `ebnf-terminal-regexp', `ebnf-case-fold-search', | |
329 | ;; `ebnf-lex-comment-char' and `ebnf-lex-eop-char'. | |
330 | ;; | |
ac4780a1 | 331 | ;; `abnf' ebnf2ps recognizes the syntax described in the URL: |
97818b07 | 332 | ;; `http://www.ietf.org/rfc/rfc2234.txt' |
ac4780a1 VJL |
333 | ;; ("Augmented BNF for Syntax Specifications: ABNF"). |
334 | ;; | |
984ae001 GM |
335 | ;; `iso-ebnf' ebnf2ps recognizes the syntax described in the URL: |
336 | ;; `http://www.cl.cam.ac.uk/~mgk25/iso-ebnf.html' | |
337 | ;; ("International Standard of the ISO EBNF Notation"). | |
338 | ;; The following variables *ONLY* have effect with this | |
339 | ;; setting: | |
340 | ;; `ebnf-iso-alternative-p' and `ebnf-iso-normalize-p'. | |
341 | ;; | |
342 | ;; `yacc' ebnf2ps recognizes the Yacc/Bison syntax. | |
343 | ;; The following variable *ONLY* has effect with this | |
344 | ;; setting: | |
345 | ;; `ebnf-yac-ignore-error-recovery'. | |
346 | ;; | |
6ca94f87 VJL |
347 | ;; `ebnfx' ebnf2ps recognizes the syntax described in the URL: |
348 | ;; `http://www.w3.org/TR/2004/REC-xml-20040204/#sec-notation' | |
349 | ;; ("Extensible Markup Language (XML) 1.0 (Third Edition)") | |
350 | ;; | |
6411a60a VJL |
351 | ;; `dtd' ebnf2ps recognizes the syntax described in the URL: |
352 | ;; `http://www.w3.org/TR/2004/REC-xml-20040204/' | |
353 | ;; ("Extensible Markup Language (XML) 1.0 (Third Edition)") | |
354 | ;; | |
984ae001 GM |
355 | ;; Any other value is treated as `ebnf'. |
356 | ;; | |
357 | ;; The default value is `ebnf'. | |
358 | ;; | |
359 | ;; | |
360 | ;; Optimizations | |
361 | ;; ------------- | |
362 | ;; | |
363 | ;; The following EBNF optimizations are done: | |
364 | ;; | |
365 | ;; [ { A }* ] ==> { A }* | |
366 | ;; [ { A }+ ] ==> { A }* | |
367 | ;; [ A ] + ==> { A }* | |
368 | ;; { A }* + ==> { A }* | |
369 | ;; { A }+ + ==> { A }+ | |
370 | ;; { A }- ==> { A }+ | |
371 | ;; [ A ]- ==> A | |
372 | ;; ( A | EMPTY )- ==> A | |
373 | ;; ( A | B | EMPTY )- ==> A | B | |
374 | ;; [ A | B ] ==> A | B | EMPTY | |
375 | ;; n * EMPTY ==> EMPTY | |
376 | ;; EMPTY + ==> EMPTY | |
377 | ;; EMPTY / EMPTY ==> EMPTY | |
378 | ;; EMPTY - A ==> EMPTY | |
379 | ;; | |
380 | ;; The following optimizations are done when `ebnf-optimize' is non-nil: | |
381 | ;; | |
382 | ;; left recursion: | |
383 | ;; 1. A = B | A C. ==> A = B {C}*. | |
384 | ;; 2. A = B | A B. ==> A = {B}+. | |
385 | ;; 3. A = | A B. ==> A = {B}*. | |
386 | ;; 4. A = B | A C B. ==> A = {B || C}+. | |
387 | ;; 5. A = B | D | A C | A E. ==> A = ( B | D ) { C | E }*. | |
388 | ;; | |
389 | ;; optional: | |
390 | ;; 6. A = B | . ==> A = [B]. | |
391 | ;; 7. A = | B . ==> A = [B]. | |
392 | ;; | |
ad96a7ef | 393 | ;; factorization: |
984ae001 GM |
394 | ;; 8. A = B C | B D. ==> A = B (C | D). |
395 | ;; 9. A = C B | D B. ==> A = (C | D) B. | |
396 | ;; 10. A = B C E | B D E. ==> A = B (C | D) E. | |
397 | ;; | |
398 | ;; The above optimizations are specially useful when `ebnf-syntax' is `yacc'. | |
399 | ;; | |
400 | ;; | |
401 | ;; Form Feed | |
402 | ;; --------- | |
403 | ;; | |
b685181e GM |
404 | ;; You may use form feed (^L \014) to force a production to start on a new |
405 | ;; page, for example: | |
984ae001 GM |
406 | ;; |
407 | ;; a) A = B | C. | |
408 | ;; ^L | |
409 | ;; X = Y | Z. | |
410 | ;; | |
411 | ;; b) A = B ^L | C. | |
412 | ;; X = Y | Z. | |
413 | ;; | |
414 | ;; c) A = B ^L^L^L | C.^L | |
415 | ;; ^L | |
416 | ;; X = Y | Z. | |
417 | ;; | |
418 | ;; In all examples above, only the production X will start on a new page. | |
419 | ;; | |
420 | ;; | |
421 | ;; Actions in Comments | |
422 | ;; ------------------- | |
423 | ;; | |
424 | ;; ebnf2ps accepts the following actions in comments: | |
425 | ;; | |
6411a60a VJL |
426 | ;; ;^ same as form feed. See section Form Feed above. |
427 | ;; | |
984ae001 GM |
428 | ;; ;> the next production starts in the same line as the current one. |
429 | ;; It is useful when `ebnf-horizontal-orientation' is nil. | |
430 | ;; | |
431 | ;; ;< the next production starts in the next line. | |
432 | ;; It is useful when `ebnf-horizontal-orientation' is non-nil. | |
433 | ;; | |
434 | ;; ;[EPS open a new EPS file. The EPS file name has the form: | |
435 | ;; <PREFIX><NAME>.eps | |
b685181e GM |
436 | ;; where <PREFIX> is given by variable `ebnf-eps-prefix' and |
437 | ;; <NAME> is the string given by ;[ action comment, this string is | |
438 | ;; mapped to form a valid file name (see documentation for | |
984ae001 GM |
439 | ;; `ebnf-eps-buffer' or `ebnf-eps-region'). |
440 | ;; It has effect only during `ebnf-eps-buffer' or | |
441 | ;; `ebnf-eps-region' execution. | |
442 | ;; It's an error to try to open an already opened EPS file. | |
443 | ;; | |
444 | ;; ;]EPS close an opened EPS file. | |
445 | ;; It has effect only during `ebnf-eps-buffer' or | |
446 | ;; `ebnf-eps-region' execution. | |
447 | ;; It's an error to try to close a not opened EPS file. | |
448 | ;; | |
3ced5caa VJL |
449 | ;; ;Hheader generate a header in current EPS file. The header string can |
450 | ;; have the following formats: | |
451 | ;; | |
452 | ;; %% prints a % character. | |
453 | ;; | |
454 | ;; %H prints the `ebnf-eps-header' (which see) value. | |
455 | ;; | |
456 | ;; %F prints the `ebnf-eps-footer' (which see) value. | |
457 | ;; | |
458 | ;; Any other format is ignored, that is, if, for example, it's | |
459 | ;; used %s then %s characters are stripped out from the header. | |
460 | ;; If header is an empty string, no header is generated until a | |
461 | ;; non-empty header is specified or `ebnf-eps-header' has a | |
462 | ;; non-empty string value. | |
463 | ;; | |
464 | ;; ;Ffooter generate a footer in current EPS file. Similar to ;H action | |
465 | ;; comment. | |
466 | ;; | |
984ae001 GM |
467 | ;; So if you have: |
468 | ;; | |
469 | ;; (setq ebnf-horizontal-orientation nil) | |
470 | ;; | |
471 | ;; A = t. | |
472 | ;; C = x. | |
473 | ;; ;> C and B are drawn in the same line | |
474 | ;; B = y. | |
475 | ;; W = v. | |
476 | ;; | |
477 | ;; The graphical result is: | |
478 | ;; | |
479 | ;; +---+ | |
480 | ;; | A | | |
481 | ;; +---+ | |
482 | ;; | |
483 | ;; +---------+ +-----+ | |
484 | ;; | | | | | |
485 | ;; | C | | | | |
486 | ;; | | | B | | |
487 | ;; +---------+ | | | |
488 | ;; | | | |
489 | ;; +-----+ | |
490 | ;; | |
491 | ;; +-----------+ | |
492 | ;; | W | | |
493 | ;; +-----------+ | |
494 | ;; | |
495 | ;; Note that if ascending production sort is used, the productions A and B will | |
496 | ;; be drawn in the same line instead of C and B. | |
497 | ;; | |
b685181e GM |
498 | ;; If consecutive actions occur, only the last one takes effect, so if you |
499 | ;; have: | |
984ae001 GM |
500 | ;; |
501 | ;; A = X. | |
502 | ;; ;< | |
503 | ;; ^L | |
504 | ;; ;> | |
505 | ;; B = Y. | |
506 | ;; | |
507 | ;; Only the ;> will take effect, that is, A and B will be drawn in the same | |
508 | ;; line. | |
509 | ;; | |
6411a60a VJL |
510 | ;; In ISO EBNF the above actions are specified as (*^*), (*>*), (*<*), (*[EPS*) |
511 | ;; and (*]EPS*). The first example above should be written: | |
984ae001 GM |
512 | ;; |
513 | ;; A = t; | |
514 | ;; C = x; | |
515 | ;; (*> C and B are drawn in the same line *) | |
516 | ;; B = y; | |
517 | ;; W = v; | |
518 | ;; | |
519 | ;; For an example of EPS action when executing `ebnf-eps-buffer' or | |
520 | ;; `ebnf-eps-region': | |
521 | ;; | |
522 | ;; Z = B0. | |
523 | ;; ;[CC | |
524 | ;; ;[AA | |
525 | ;; A = B1. | |
526 | ;; ;[BB | |
527 | ;; C = B2. | |
528 | ;; ;]AA | |
529 | ;; B = B3. | |
530 | ;; ;]BB | |
531 | ;; ;]CC | |
532 | ;; D = B4. | |
533 | ;; E = B5. | |
534 | ;; ;[CC | |
535 | ;; F = B6. | |
536 | ;; ;]CC | |
537 | ;; G = B7. | |
538 | ;; | |
539 | ;; The following table summarizes the results: | |
540 | ;; | |
ed0aa46c VJL |
541 | ;; EPS FILE NAME NO SORT ASCENDING SORT DESCENDING SORT |
542 | ;; ebnf--AA.eps A C A C C A | |
543 | ;; ebnf--BB.eps C B B C C B | |
544 | ;; ebnf--CC.eps A C B F A B C F F C B A | |
545 | ;; ebnf--D.eps D D D | |
546 | ;; ebnf--E.eps E E E | |
547 | ;; ebnf--G.eps G G G | |
548 | ;; ebnf--Z.eps Z Z Z | |
984ae001 GM |
549 | ;; |
550 | ;; As you can see if EPS actions is not used, each single production is | |
551 | ;; generated per EPS file. To avoid overriding EPS files, use names in ;[ that | |
552 | ;; it's not an existing production name. | |
553 | ;; | |
554 | ;; In the following case: | |
555 | ;; | |
556 | ;; A = B0. | |
557 | ;; ;[AA | |
558 | ;; A = B1. | |
559 | ;; ;[BB | |
560 | ;; A = B2. | |
561 | ;; | |
562 | ;; The production A is generated in both files ebnf--AA.eps and ebnf--BB.eps. | |
563 | ;; | |
564 | ;; | |
3ced5caa VJL |
565 | ;; Log Messages |
566 | ;; ------------ | |
567 | ;; | |
568 | ;; The buffer *Ebnf2ps Log* is where the ebnf2ps log messages are inserted. | |
569 | ;; These messages are intended to help debugging ebnf2ps. | |
570 | ;; | |
571 | ;; The log messages are enabled by `ebnf-log' option (which see). The default | |
572 | ;; value is nil, that is, no log messages are generated. | |
573 | ;; | |
574 | ;; | |
984ae001 GM |
575 | ;; Utilities |
576 | ;; --------- | |
577 | ;; | |
578 | ;; Some tools are provided to help you. | |
579 | ;; | |
580 | ;; `ebnf-setup' returns the current setup. | |
581 | ;; | |
cd0f9f85 VJL |
582 | ;; `ebnf-syntax-directory' does a syntactic analysis of your EBNF files in the |
583 | ;; given directory. | |
584 | ;; | |
585 | ;; `ebnf-syntax-file' does a syntactic analysis of your EBNF in the given | |
586 | ;; file. | |
587 | ;; | |
ab3256ed | 588 | ;; `ebnf-syntax-buffer' does a syntactic analysis of your EBNF in the current |
984ae001 GM |
589 | ;; buffer. |
590 | ;; | |
ab3256ed | 591 | ;; `ebnf-syntax-region' does a syntactic analysis of your EBNF in the current |
984ae001 GM |
592 | ;; region. |
593 | ;; | |
594 | ;; `ebnf-customize' activates a customization buffer for ebnf2ps options. | |
595 | ;; | |
cd0f9f85 VJL |
596 | ;; `ebnf-syntax-directory', `ebnf-syntax-file', `ebnf-syntax-buffer', |
597 | ;; `ebnf-syntax-region' and `ebnf-customize' can be bound to keys in the same | |
598 | ;; way as `ebnf-' commands. | |
984ae001 GM |
599 | ;; |
600 | ;; | |
601 | ;; Hooks | |
602 | ;; ----- | |
603 | ;; | |
604 | ;; ebn2ps has the following hook variables: | |
605 | ;; | |
606 | ;; `ebnf-hook' | |
607 | ;; It is evaluated once before any ebnf2ps process. | |
608 | ;; | |
609 | ;; `ebnf-production-hook' | |
610 | ;; It is evaluated on each beginning of production. | |
611 | ;; | |
612 | ;; `ebnf-page-hook' | |
613 | ;; It is evaluated on each beginning of page. | |
614 | ;; | |
615 | ;; | |
616 | ;; Options | |
617 | ;; ------- | |
618 | ;; | |
619 | ;; Below it's shown a brief description of ebnf2ps options, please, see the | |
620 | ;; options declaration in the code for a long documentation. | |
621 | ;; | |
622 | ;; `ebnf-horizontal-orientation' Non-nil means productions are drawn | |
623 | ;; horizontally. | |
624 | ;; | |
625 | ;; `ebnf-horizontal-max-height' Non-nil means to use maximum production | |
626 | ;; height in horizontal orientation. | |
627 | ;; | |
628 | ;; `ebnf-production-horizontal-space' Specify horizontal space in points | |
629 | ;; between productions. | |
630 | ;; | |
b685181e GM |
631 | ;; `ebnf-production-vertical-space' Specify vertical space in points |
632 | ;; between productions. | |
984ae001 GM |
633 | ;; |
634 | ;; `ebnf-justify-sequence' Specify justification of terms in a | |
635 | ;; sequence inside alternatives. | |
636 | ;; | |
637 | ;; `ebnf-terminal-regexp' Specify how it's a terminal name. | |
638 | ;; | |
639 | ;; `ebnf-case-fold-search' Non-nil means ignore case on matching. | |
640 | ;; | |
641 | ;; `ebnf-terminal-font' Specify terminal font. | |
642 | ;; | |
643 | ;; `ebnf-terminal-shape' Specify terminal box shape. | |
644 | ;; | |
645 | ;; `ebnf-terminal-shadow' Non-nil means terminal box will have a | |
646 | ;; shadow. | |
647 | ;; | |
648 | ;; `ebnf-terminal-border-width' Specify border width for terminal box. | |
649 | ;; | |
650 | ;; `ebnf-terminal-border-color' Specify border color for terminal box. | |
651 | ;; | |
ac4780a1 VJL |
652 | ;; `ebnf-production-name-p' Non-nil means production name will be |
653 | ;; printed. | |
654 | ;; | |
984ae001 GM |
655 | ;; `ebnf-sort-production' Specify how productions are sorted. |
656 | ;; | |
657 | ;; `ebnf-production-font' Specify production font. | |
658 | ;; | |
659 | ;; `ebnf-non-terminal-font' Specify non-terminal font. | |
660 | ;; | |
661 | ;; `ebnf-non-terminal-shape' Specify non-terminal box shape. | |
662 | ;; | |
b685181e GM |
663 | ;; `ebnf-non-terminal-shadow' Non-nil means non-terminal box will |
664 | ;; have a shadow. | |
984ae001 GM |
665 | ;; |
666 | ;; `ebnf-non-terminal-border-width' Specify border width for non-terminal | |
667 | ;; box. | |
668 | ;; | |
669 | ;; `ebnf-non-terminal-border-color' Specify border color for non-terminal | |
670 | ;; box. | |
671 | ;; | |
ac4780a1 VJL |
672 | ;; `ebnf-special-show-delimiter' Non-nil means special delimiter |
673 | ;; (character `?') is shown. | |
674 | ;; | |
984ae001 GM |
675 | ;; `ebnf-special-font' Specify special font. |
676 | ;; | |
677 | ;; `ebnf-special-shape' Specify special box shape. | |
678 | ;; | |
679 | ;; `ebnf-special-shadow' Non-nil means special box will have a | |
680 | ;; shadow. | |
681 | ;; | |
682 | ;; `ebnf-special-border-width' Specify border width for special box. | |
683 | ;; | |
684 | ;; `ebnf-special-border-color' Specify border color for special box. | |
685 | ;; | |
686 | ;; `ebnf-except-font' Specify except font. | |
687 | ;; | |
688 | ;; `ebnf-except-shape' Specify except box shape. | |
689 | ;; | |
690 | ;; `ebnf-except-shadow' Non-nil means except box will have a | |
691 | ;; shadow. | |
692 | ;; | |
693 | ;; `ebnf-except-border-width' Specify border width for except box. | |
694 | ;; | |
695 | ;; `ebnf-except-border-color' Specify border color for except box. | |
696 | ;; | |
697 | ;; `ebnf-repeat-font' Specify repeat font. | |
698 | ;; | |
699 | ;; `ebnf-repeat-shape' Specify repeat box shape. | |
700 | ;; | |
701 | ;; `ebnf-repeat-shadow' Non-nil means repeat box will have a | |
702 | ;; shadow. | |
703 | ;; | |
704 | ;; `ebnf-repeat-border-width' Specify border width for repeat box. | |
705 | ;; | |
706 | ;; `ebnf-repeat-border-color' Specify border color for repeat box. | |
707 | ;; | |
708 | ;; `ebnf-entry-percentage' Specify entry height on alternatives. | |
709 | ;; | |
710 | ;; `ebnf-arrow-shape' Specify the arrow shape. | |
711 | ;; | |
712 | ;; `ebnf-chart-shape' Specify chart flow shape. | |
713 | ;; | |
714 | ;; `ebnf-color-p' Non-nil means use color. | |
715 | ;; | |
716 | ;; `ebnf-line-width' Specify flow line width. | |
717 | ;; | |
718 | ;; `ebnf-line-color' Specify flow line color. | |
719 | ;; | |
ed0aa46c VJL |
720 | ;; `ebnf-arrow-extra-width' Specify extra width for arrow shape |
721 | ;; drawing. | |
722 | ;; | |
723 | ;; `ebnf-arrow-scale' Specify the arrow scale. | |
724 | ;; | |
bf061ba6 | 725 | ;; `ebnf-user-arrow' Specify a sexp for user arrow shape (a |
b685181e | 726 | ;; PostScript code). |
984ae001 GM |
727 | ;; |
728 | ;; `ebnf-debug-ps' Non-nil means to generate PostScript | |
729 | ;; debug procedures. | |
730 | ;; | |
731 | ;; `ebnf-lex-comment-char' Specify the line comment character. | |
732 | ;; | |
b685181e GM |
733 | ;; `ebnf-lex-eop-char' Specify the end of production |
734 | ;; character. | |
984ae001 GM |
735 | ;; |
736 | ;; `ebnf-syntax' Specify syntax to be recognized. | |
737 | ;; | |
738 | ;; `ebnf-iso-alternative-p' Non-nil means use alternative ISO EBNF. | |
739 | ;; | |
740 | ;; `ebnf-iso-normalize-p' Non-nil means normalize ISO EBNF syntax | |
741 | ;; names. | |
742 | ;; | |
743 | ;; `ebnf-default-width' Specify additional border width over | |
744 | ;; default terminal, non-terminal or | |
745 | ;; special. | |
746 | ;; | |
ac4780a1 VJL |
747 | ;; `ebnf-file-suffix-regexp' Specify file name suffix that contains |
748 | ;; EBNF. | |
749 | ;; | |
984ae001 GM |
750 | ;; `ebnf-eps-prefix' Specify EPS prefix file name. |
751 | ;; | |
3ced5caa VJL |
752 | ;; `ebnf-eps-header-font' Specify EPS header font. |
753 | ;; | |
754 | ;; `ebnf-eps-header' Specify EPS header. | |
755 | ;; | |
756 | ;; `ebnf-eps-footer-font' Specify EPS footer font. | |
757 | ;; | |
758 | ;; `ebnf-eps-footer' Specify EPS footer. | |
759 | ;; | |
984ae001 GM |
760 | ;; `ebnf-use-float-format' Non-nil means use `%f' float format. |
761 | ;; | |
ac4780a1 VJL |
762 | ;; `ebnf-stop-on-error' Non-nil means signal error and stop. |
763 | ;; Nil means signal error and continue. | |
764 | ;; | |
984ae001 GM |
765 | ;; `ebnf-yac-ignore-error-recovery' Non-nil means ignore error recovery. |
766 | ;; | |
767 | ;; `ebnf-ignore-empty-rule' Non-nil means ignore empty rules. | |
768 | ;; | |
ab3256ed | 769 | ;; `ebnf-optimize' Non-nil means optimize syntactic chart |
b685181e | 770 | ;; of rules. |
984ae001 | 771 | ;; |
3ced5caa VJL |
772 | ;; `ebnf-log' Non-nil means generate log messages. |
773 | ;; | |
984ae001 GM |
774 | ;; To set the above options you may: |
775 | ;; | |
776 | ;; a) insert the code in your ~/.emacs, like: | |
777 | ;; | |
778 | ;; (setq ebnf-terminal-shape 'bevel) | |
779 | ;; | |
780 | ;; This way always keep your default settings when you enter a new Emacs | |
781 | ;; session. | |
782 | ;; | |
783 | ;; b) or use `set-variable' in your Emacs session, like: | |
784 | ;; | |
785 | ;; M-x set-variable RET ebnf-terminal-shape RET bevel RET | |
786 | ;; | |
787 | ;; This way keep your settings only during the current Emacs session. | |
788 | ;; | |
789 | ;; c) or use customization, for example: | |
790 | ;; click on menu-bar *Help* option, | |
791 | ;; then click on *Customize*, | |
792 | ;; then click on *Browse Customization Groups*, | |
793 | ;; expand *PostScript* group, | |
794 | ;; expand *Ebnf2ps* group | |
795 | ;; and then customize ebnf2ps options. | |
796 | ;; Through this way, you may choose if the settings are kept or not when | |
797 | ;; you leave out the current Emacs session. | |
798 | ;; | |
799 | ;; d) or see the option value: | |
800 | ;; | |
801 | ;; C-h v ebnf-terminal-shape RET | |
802 | ;; | |
803 | ;; and click the *customize* hypertext button. | |
804 | ;; Through this way, you may choose if the settings are kept or not when | |
805 | ;; you leave out the current Emacs session. | |
806 | ;; | |
807 | ;; e) or invoke: | |
808 | ;; | |
809 | ;; M-x ebnf-customize RET | |
810 | ;; | |
811 | ;; and then customize ebnf2ps options. | |
812 | ;; Through this way, you may choose if the settings are kept or not when | |
813 | ;; you leave out the current Emacs session. | |
814 | ;; | |
815 | ;; | |
816 | ;; Styles | |
817 | ;; ------ | |
818 | ;; | |
819 | ;; Sometimes you need to change the EBNF style you are using, for example, | |
820 | ;; change the shapes and colors. These changes may force you to set some | |
821 | ;; variables and after use, set back the variables to the old values. | |
822 | ;; | |
823 | ;; To help to handle this situation, ebnf2ps has the following commands to | |
824 | ;; handle styles: | |
825 | ;; | |
3ced5caa VJL |
826 | ;; `ebnf-find-style' Return style definition if NAME is already defined; |
827 | ;; otherwise, return nil. | |
828 | ;; | |
984ae001 GM |
829 | ;; `ebnf-insert-style' Insert a new style NAME with inheritance INHERITS and |
830 | ;; values VALUES. | |
831 | ;; | |
ac4780a1 VJL |
832 | ;; `ebnf-delete-style' Delete style NAME. |
833 | ;; | |
984ae001 GM |
834 | ;; `ebnf-merge-style' Merge values of style NAME with style VALUES. |
835 | ;; | |
ac4780a1 | 836 | ;; `ebnf-apply-style' Set STYLE as the current style. |
984ae001 GM |
837 | ;; |
838 | ;; `ebnf-reset-style' Reset current style. | |
839 | ;; | |
ac4780a1 | 840 | ;; `ebnf-push-style' Push the current style and set STYLE as the current |
6f19f70a | 841 | ;; style. |
984ae001 | 842 | ;; |
ac4780a1 | 843 | ;; `ebnf-pop-style' Pop a style and set it as the current style. |
984ae001 | 844 | ;; |
ac4780a1 | 845 | ;; These commands help to put together a lot of variable settings in a group |
984ae001 GM |
846 | ;; and name this group. So when you wish to apply these settings it's only |
847 | ;; needed to give the name. | |
848 | ;; | |
4303661c VJL |
849 | ;; There is also a notion of simple inheritance of style: if you declare that |
850 | ;; style A inherits from style B, all settings of B are applied first and then | |
851 | ;; the settings of A are applied. This is useful when you wish to modify some | |
852 | ;; aspects of an existing style, but at same time wish to keep it unmodified. | |
984ae001 GM |
853 | ;; |
854 | ;; See documentation for `ebnf-style-database'. | |
855 | ;; | |
856 | ;; | |
857 | ;; Layout | |
858 | ;; ------ | |
859 | ;; | |
860 | ;; Below it is the layout of minimum area to draw each element, and it's used | |
861 | ;; the following terms: | |
862 | ;; | |
863 | ;; font height is given by: | |
864 | ;; (terminal font height + non-terminal font height) / 2 | |
865 | ;; | |
b685181e GM |
866 | ;; entry is the vertical position used to know where it should |
867 | ;; be drawn the flow line in the current element. | |
984ae001 | 868 | ;; |
ed0aa46c VJL |
869 | ;; extra is given by `ebnf-arrow-extra-width'. |
870 | ;; | |
984ae001 GM |
871 | ;; |
872 | ;; * SPECIAL, TERMINAL and NON-TERMINAL | |
873 | ;; | |
874 | ;; +==============+................................... | |
875 | ;; | | } font height / 2 } entry } | |
876 | ;; | XXXXXXXX...|....... } } | |
877 | ;; ====+ XXXXXXXX +==== } text height ...... } height | |
878 | ;; : | XXXXXXXX...|...:... } | |
879 | ;; : | : : | : } font height / 2 } | |
880 | ;; : +==============+...:............................... | |
881 | ;; : : : : : : | |
ed0aa46c VJL |
882 | ;; : : : : : :......................... |
883 | ;; : : : : : } font height } | |
884 | ;; : : : : :....... } | |
885 | ;; : : : : } font height / 2 } | |
886 | ;; : : : :........... } | |
887 | ;; : : : } text width } width | |
888 | ;; : : :.................. } | |
889 | ;; : : } font height / 2 } | |
890 | ;; : :...................... } | |
891 | ;; : } font height + extra } | |
892 | ;; :................................................. | |
984ae001 GM |
893 | ;; |
894 | ;; | |
895 | ;; * OPTIONAL | |
896 | ;; | |
897 | ;; +==========+..................................... | |
898 | ;; | | } } } | |
899 | ;; | | } entry } } | |
900 | ;; | | } } } | |
901 | ;; ===+===+ +===+===... } element height } height | |
902 | ;; : \ | | / : } } | |
903 | ;; : + | | + : } } | |
904 | ;; : | +==========+.|................. } | |
905 | ;; : | : : | : } font height } | |
906 | ;; : +==============+................................... | |
907 | ;; : : : : | |
908 | ;; : : : :...................... | |
909 | ;; : : : } font height * 2 } | |
910 | ;; : : :.......... } | |
911 | ;; : : } element width } width | |
912 | ;; : :..................... } | |
913 | ;; : } font height * 2 } | |
914 | ;; :............................................... | |
915 | ;; | |
916 | ;; | |
917 | ;; * ALTERNATIVE | |
918 | ;; | |
919 | ;; +===+................................... | |
920 | ;; +==+ A +==+ } A height } } | |
921 | ;; | +===+..|........ } entry } | |
922 | ;; + + } font height } } | |
923 | ;; / +===+...\....... } } | |
924 | ;; ===+====+ B +====+=== } B height ..... } height | |
925 | ;; : \ +===+.../....... } | |
926 | ;; : + + : } font height } | |
927 | ;; : | +===+..|........ } | |
928 | ;; : +==+ C +==+ : } C height } | |
929 | ;; : : +===+................................... | |
930 | ;; : : : : | |
931 | ;; : : : :...................... | |
932 | ;; : : : } font height * 2 } | |
933 | ;; : : :......... } | |
934 | ;; : : } max width } width | |
935 | ;; : :................. } | |
936 | ;; : } font height * 2 } | |
937 | ;; :.......................................... | |
938 | ;; | |
939 | ;; NOTES: | |
940 | ;; 1. An empty alternative has zero of height. | |
941 | ;; | |
942 | ;; 2. The variable `ebnf-entry-percentage' is used to determine the | |
943 | ;; entry point. | |
944 | ;; | |
945 | ;; | |
946 | ;; * ZERO OR MORE | |
947 | ;; | |
948 | ;; +===========+............................... | |
949 | ;; +=+ separator +=+ } separator height } | |
950 | ;; / +===========+..\........ } | |
951 | ;; + + } } | |
952 | ;; | | } font height } | |
953 | ;; + + } } | |
954 | ;; \ +===========+../........ } height = entry | |
955 | ;; +=+ element +=+ } element height } | |
956 | ;; /: +===========+..\........ } | |
957 | ;; + : : + } } | |
958 | ;; + : : + } font height } | |
959 | ;; / : : \ } } | |
960 | ;; ==+=======================+==....................... | |
961 | ;; : : : : | |
962 | ;; : : : :....................... | |
963 | ;; : : : } font height * 2 } | |
964 | ;; : : :......... } | |
965 | ;; : : } max width } width | |
966 | ;; : :......................... } | |
967 | ;; : } font height * 2 } | |
968 | ;; :................................................... | |
969 | ;; | |
970 | ;; | |
971 | ;; * ONE OR MORE | |
972 | ;; | |
973 | ;; +===========+...................................... | |
974 | ;; +=+ separator +=+ } separator height } } | |
975 | ;; / +===========+..\...... } } | |
976 | ;; + + } } entry } | |
977 | ;; | | } font height } } height | |
978 | ;; + + } } } | |
979 | ;; \ +===========+../...... } } | |
980 | ;; ===+=+ element +=+=== } element height .... } | |
981 | ;; : : +===========+...................................... | |
982 | ;; : : : : | |
983 | ;; : : : :........................ | |
984 | ;; : : : } font height * 2 } | |
985 | ;; : : :....... } | |
986 | ;; : : } max width } width | |
987 | ;; : :....................... } | |
988 | ;; : } font height * 2 } | |
989 | ;; :.............................................. | |
990 | ;; | |
991 | ;; | |
992 | ;; * PRODUCTION | |
993 | ;; | |
994 | ;; XXXXXX:...................................... | |
995 | ;; XXXXXX: } production font height } | |
996 | ;; XXXXXX:............ } | |
997 | ;; } font height } | |
998 | ;; +======+....... } height = entry | |
999 | ;; | | } } | |
1000 | ;; ====+ +==== } element height } | |
1001 | ;; : | | : } } | |
1002 | ;; : +======+................................. | |
1003 | ;; : : : : | |
1004 | ;; : : : :...................... | |
1005 | ;; : : : } font height * 2 } | |
1006 | ;; : : :....... } | |
1007 | ;; : : } element width } width | |
1008 | ;; : :.............. } | |
1009 | ;; : } font height * 2 } | |
1010 | ;; :..................................... | |
1011 | ;; | |
1012 | ;; | |
1013 | ;; * REPEAT | |
1014 | ;; | |
1015 | ;; +================+................................... | |
1016 | ;; | | } font height / 2 } entry } | |
1017 | ;; | +===+...|....... } } | |
1018 | ;; ====+ N * | X | +==== } X height ......... } height | |
1019 | ;; : | : : +===+...|...:... } | |
1020 | ;; : | : : : : | : } font height / 2 } | |
1021 | ;; : +================+...:............................... | |
1022 | ;; : : : : : : : : | |
ed0aa46c VJL |
1023 | ;; : : : : : : : :.......................... |
1024 | ;; : : : : : : : } font height } | |
1025 | ;; : : : : : : :....... } | |
1026 | ;; : : : : : : } font height / 2 } | |
1027 | ;; : : : : : :........... } | |
1028 | ;; : : : : : } X width } | |
1029 | ;; : : : : :............... } | |
1030 | ;; : : : : } font height / 2 } width | |
1031 | ;; : : : :.................. } | |
1032 | ;; : : : } text width } | |
1033 | ;; : : :..................... } | |
1034 | ;; : : } font height / 2 } | |
1035 | ;; : :........................ } | |
1036 | ;; : } font height + extra } | |
1037 | ;; :................................................... | |
984ae001 GM |
1038 | ;; |
1039 | ;; | |
1040 | ;; * EXCEPT | |
1041 | ;; | |
1042 | ;; +==================+................................... | |
1043 | ;; | | } font height / 2 } entry } | |
1044 | ;; | +===+ +===+...|....... } } | |
1045 | ;; ====+ | X | - | y | +==== } max height ....... } height | |
1046 | ;; : | +===+ +===+...|...:... } | |
1047 | ;; : | : : : : | : } font height / 2 } | |
1048 | ;; : +==================+...:............................... | |
1049 | ;; : : : : : : : : | |
ed0aa46c VJL |
1050 | ;; : : : : : : : :.......................... |
1051 | ;; : : : : : : : } font height } | |
1052 | ;; : : : : : : :....... } | |
1053 | ;; : : : : : : } font height / 2 } | |
1054 | ;; : : : : : :........... } | |
1055 | ;; : : : : : } Y width } | |
1056 | ;; : : : : :............... } | |
1057 | ;; : : : : } font height } width | |
1058 | ;; : : : :................... } | |
1059 | ;; : : : } X width } | |
1060 | ;; : : :....................... } | |
1061 | ;; : : } font height / 2 } | |
1062 | ;; : :.......................... } | |
1063 | ;; : } font height + extra } | |
1064 | ;; :..................................................... | |
984ae001 GM |
1065 | ;; |
1066 | ;; NOTE: If Y element is empty, it's draw nothing at Y place. | |
1067 | ;; | |
1068 | ;; | |
1069 | ;; Internal Structures | |
1070 | ;; ------------------- | |
1071 | ;; | |
ab3256ed | 1072 | ;; ebnf2ps has two passes. The first pass does a lexical and syntactic analysis |
984ae001 | 1073 | ;; of current buffer and generates an intermediate representation. The second |
b685181e | 1074 | ;; pass uses the intermediate representation to generate the PostScript |
ab3256ed | 1075 | ;; syntactic chart. |
984ae001 GM |
1076 | ;; |
1077 | ;; The intermediate representation is a list of vectors, the vector element | |
ab3256ed JB |
1078 | ;; represents a syntactic chart element. Below is a vector representation for |
1079 | ;; each syntactic chart element. | |
984ae001 | 1080 | ;; |
b685181e | 1081 | ;; [production WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH NAME PRODUCTION ACTION] |
984ae001 GM |
1082 | ;; [alternative WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH LIST] |
1083 | ;; [sequence WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH LIST] | |
1084 | ;; [terminal WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH NAME DEFAULT] | |
1085 | ;; [non-terminal WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH NAME DEFAULT] | |
1086 | ;; [special WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH NAME DEFAULT] | |
1087 | ;; [empty WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH] | |
1088 | ;; [optional WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH ELEMENT] | |
1089 | ;; [one-or-more WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH ELEMENT SEPARATOR] | |
1090 | ;; [zero-or-more WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH ELEMENT SEPARATOR] | |
1091 | ;; [repeat WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH TIMES ELEMENT] | |
1092 | ;; [except WIDTH-FUN DIM-FUN ENTRY HEIGHT WIDTH ELEMENT ELEMENT] | |
1093 | ;; | |
1094 | ;; The first vector position is a function symbol used to generate PostScript | |
1095 | ;; for this element. | |
1096 | ;; WIDTH-FUN is a function symbol called to adjust the element width. | |
1097 | ;; DIM-FUN is a function symbol called to set the element dimensions. | |
1098 | ;; ENTRY is the element entry point. | |
1099 | ;; HEIGHT and WIDTH are the element height and width, respectively. | |
1100 | ;; NAME is a string that it's the element name. | |
1101 | ;; DEFAULT is a boolean that indicates if it's a `default' element. | |
1102 | ;; PRODUCTION and ELEMENT are vectors that represents sub-elements of current | |
1103 | ;; one. | |
1104 | ;; LIST is a list of vector that represents the list part for alternatives and | |
1105 | ;; sequences. | |
1106 | ;; SEPARATOR is a vector that represents the sub-element used to separate the | |
1107 | ;; list elements. | |
1108 | ;; TIMES is a string representing the number of times that ELEMENT is repeated | |
1109 | ;; on a repeat construction. | |
1110 | ;; ACTION indicates some action that should be done before production is | |
1111 | ;; generated. The current actions are: | |
1112 | ;; | |
1113 | ;; nil no action. | |
1114 | ;; | |
1115 | ;; form-feed current production starts on a new page. | |
1116 | ;; | |
1117 | ;; newline current production starts on next line, this is useful | |
1118 | ;; when `ebnf-horizontal-orientation' is non-nil. | |
1119 | ;; | |
1120 | ;; keep-line current production continues on the current line, this | |
1121 | ;; is useful when `ebnf-horizontal-orientation' is nil. | |
1122 | ;; | |
1123 | ;; | |
1124 | ;; Things To Change | |
1125 | ;; ---------------- | |
1126 | ;; | |
ab3256ed | 1127 | ;; . Handle situations when syntactic chart is out of paper. |
984ae001 GM |
1128 | ;; . Use other alphabet than ascii. |
1129 | ;; . Optimizations... | |
1130 | ;; | |
1131 | ;; | |
1132 | ;; Acknowledgements | |
1133 | ;; ---------------- | |
1134 | ;; | |
4303661c VJL |
1135 | ;; Thanks to Eli Zaretskii <eliz@gnu.org> for some doc fixes. |
1136 | ;; | |
ea946fcc | 1137 | ;; Thanks to Drew Adams <drew.adams@oracle.com> for suggestions: |
ed0aa46c VJL |
1138 | ;; - `ebnf-arrow-extra-width', `ebnf-arrow-scale', |
1139 | ;; `ebnf-production-name-p', `ebnf-stop-on-error', | |
ac4780a1 VJL |
1140 | ;; `ebnf-file-suffix-regexp'and `ebnf-special-show-delimiter' variables. |
1141 | ;; - `ebnf-delete-style', `ebnf-eps-file' and `ebnf-eps-directory' | |
1142 | ;; commands. | |
1143 | ;; - some docs fix. | |
1144 | ;; | |
1145 | ;; Thanks to Matthew K. Junker <junker@alum.mit.edu> for the suggestion to deal | |
1146 | ;; with some Bison features (%right, %left and %prec pragmas). His suggestion | |
1147 | ;; was extended to deal with %nonassoc pragma too. | |
1148 | ;; | |
984ae001 GM |
1149 | ;; Thanks to all who emailed comments. |
1150 | ;; | |
1151 | ;; | |
1152 | ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
1153 | ||
e8af40ee | 1154 | ;;; Code: |
984ae001 GM |
1155 | |
1156 | ||
1157 | (require 'ps-print) | |
1158 | ||
b685181e GM |
1159 | (and (string< ps-print-version "5.2.3") |
1160 | (error "`ebnf2ps' requires `ps-print' package version 5.2.3 or later")) | |
984ae001 | 1161 | |
ea946fcc VJL |
1162 | |
1163 | ;; to avoid gripes with Emacs 20 | |
99439846 VJL |
1164 | (or (fboundp 'assq-delete-all) |
1165 | (defun assq-delete-all (key alist) | |
1166 | "Delete from ALIST all elements whose car is KEY. | |
ea946fcc VJL |
1167 | Return the modified alist. |
1168 | Elements of ALIST that are not conses are ignored." | |
99439846 VJL |
1169 | (let ((tail alist)) |
1170 | (while tail | |
1171 | (if (and (consp (car tail)) | |
1172 | (eq (car (car tail)) key)) | |
1173 | (setq alist (delq (car tail) alist))) | |
1174 | (setq tail (cdr tail))) | |
1175 | alist))) | |
ea946fcc | 1176 | |
984ae001 GM |
1177 | \f |
1178 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
1179 | ;; User Variables: | |
1180 | ||
1181 | ||
1182 | ;;; Interface to the command system | |
1183 | ||
1184 | (defgroup postscript nil | |
dfbe3e71 | 1185 | "PostScript Group." |
984ae001 | 1186 | :tag "PostScript" |
b11b1870 | 1187 | :version "20" |
984ae001 GM |
1188 | :group 'emacs) |
1189 | ||
1190 | ||
1191 | (defgroup ebnf2ps nil | |
dfbe3e71 | 1192 | "Translate an EBNF to a syntactic chart on PostScript." |
984ae001 | 1193 | :prefix "ebnf-" |
b11b1870 | 1194 | :version "20" |
984ae001 GM |
1195 | :group 'wp |
1196 | :group 'postscript) | |
1197 | ||
1198 | ||
1199 | (defgroup ebnf-special nil | |
dfbe3e71 | 1200 | "Special customization." |
984ae001 GM |
1201 | :prefix "ebnf-" |
1202 | :tag "Special" | |
b11b1870 | 1203 | :version "20" |
984ae001 GM |
1204 | :group 'ebnf2ps) |
1205 | ||
1206 | ||
1207 | (defgroup ebnf-except nil | |
dfbe3e71 | 1208 | "Except customization." |
984ae001 GM |
1209 | :prefix "ebnf-" |
1210 | :tag "Except" | |
b11b1870 | 1211 | :version "20" |
984ae001 GM |
1212 | :group 'ebnf2ps) |
1213 | ||
1214 | ||
1215 | (defgroup ebnf-repeat nil | |
dfbe3e71 | 1216 | "Repeat customization." |
984ae001 GM |
1217 | :prefix "ebnf-" |
1218 | :tag "Repeat" | |
b11b1870 | 1219 | :version "20" |
984ae001 GM |
1220 | :group 'ebnf2ps) |
1221 | ||
1222 | ||
1223 | (defgroup ebnf-terminal nil | |
dfbe3e71 | 1224 | "Terminal customization." |
984ae001 GM |
1225 | :prefix "ebnf-" |
1226 | :tag "Terminal" | |
b11b1870 | 1227 | :version "20" |
984ae001 GM |
1228 | :group 'ebnf2ps) |
1229 | ||
1230 | ||
1231 | (defgroup ebnf-non-terminal nil | |
dfbe3e71 | 1232 | "Non-Terminal customization." |
984ae001 GM |
1233 | :prefix "ebnf-" |
1234 | :tag "Non-Terminal" | |
b11b1870 | 1235 | :version "20" |
984ae001 GM |
1236 | :group 'ebnf2ps) |
1237 | ||
1238 | ||
1239 | (defgroup ebnf-production nil | |
dfbe3e71 | 1240 | "Production customization." |
984ae001 GM |
1241 | :prefix "ebnf-" |
1242 | :tag "Production" | |
b11b1870 | 1243 | :version "20" |
984ae001 GM |
1244 | :group 'ebnf2ps) |
1245 | ||
1246 | ||
1247 | (defgroup ebnf-shape nil | |
dfbe3e71 | 1248 | "Shapes customization." |
984ae001 GM |
1249 | :prefix "ebnf-" |
1250 | :tag "Shape" | |
b11b1870 | 1251 | :version "20" |
984ae001 GM |
1252 | :group 'ebnf2ps) |
1253 | ||
1254 | ||
1255 | (defgroup ebnf-displacement nil | |
dfbe3e71 | 1256 | "Displacement customization." |
984ae001 GM |
1257 | :prefix "ebnf-" |
1258 | :tag "Displacement" | |
b11b1870 | 1259 | :version "20" |
984ae001 GM |
1260 | :group 'ebnf2ps) |
1261 | ||
1262 | ||
ab3256ed | 1263 | (defgroup ebnf-syntactic nil |
dfbe3e71 | 1264 | "Syntactic customization." |
984ae001 | 1265 | :prefix "ebnf-" |
ab3256ed | 1266 | :tag "Syntactic" |
b11b1870 | 1267 | :version "20" |
984ae001 GM |
1268 | :group 'ebnf2ps) |
1269 | ||
1270 | ||
1271 | (defgroup ebnf-optimization nil | |
dfbe3e71 | 1272 | "Optimization customization." |
984ae001 GM |
1273 | :prefix "ebnf-" |
1274 | :tag "Optimization" | |
b11b1870 | 1275 | :version "20" |
984ae001 GM |
1276 | :group 'ebnf2ps) |
1277 | ||
1278 | ||
1279 | (defcustom ebnf-horizontal-orientation nil | |
1280 | "*Non-nil means productions are drawn horizontally." | |
1281 | :type 'boolean | |
b11b1870 | 1282 | :version "20" |
984ae001 GM |
1283 | :group 'ebnf-displacement) |
1284 | ||
1285 | ||
1286 | (defcustom ebnf-horizontal-max-height nil | |
1287 | "*Non-nil means to use maximum production height in horizontal orientation. | |
1288 | ||
1289 | It is only used when `ebnf-horizontal-orientation' is non-nil." | |
1290 | :type 'boolean | |
b11b1870 | 1291 | :version "20" |
984ae001 GM |
1292 | :group 'ebnf-displacement) |
1293 | ||
1294 | ||
1295 | (defcustom ebnf-production-horizontal-space 0.0 ; use ebnf2ps default value | |
1296 | "*Specify horizontal space in points between productions. | |
1297 | ||
1298 | Value less or equal to zero forces ebnf2ps to set a proper default value." | |
1299 | :type 'number | |
b11b1870 | 1300 | :version "20" |
984ae001 GM |
1301 | :group 'ebnf-displacement) |
1302 | ||
1303 | ||
1304 | (defcustom ebnf-production-vertical-space 0.0 ; use ebnf2ps default value | |
1305 | "*Specify vertical space in points between productions. | |
1306 | ||
1307 | Value less or equal to zero forces ebnf2ps to set a proper default value." | |
1308 | :type 'number | |
b11b1870 | 1309 | :version "20" |
984ae001 GM |
1310 | :group 'ebnf-displacement) |
1311 | ||
1312 | ||
1313 | (defcustom ebnf-justify-sequence 'center | |
1314 | "*Specify justification of terms in a sequence inside alternatives. | |
1315 | ||
1316 | Valid values are: | |
1317 | ||
1318 | `left' left justification | |
1319 | `right' right justification | |
1320 | any other value centralize" | |
1321 | :type '(radio :tag "Sequence Justification" | |
1322 | (const left) (const right) (other :tag "center" center)) | |
b11b1870 | 1323 | :version "20" |
984ae001 GM |
1324 | :group 'ebnf-displacement) |
1325 | ||
1326 | ||
ac4780a1 VJL |
1327 | (defcustom ebnf-special-show-delimiter t |
1328 | "*Non-nil means special delimiter (character `?') is shown." | |
1329 | :type 'boolean | |
b11b1870 | 1330 | :version "20" |
ac4780a1 VJL |
1331 | :group 'ebnf-special) |
1332 | ||
1333 | ||
984ae001 GM |
1334 | (defcustom ebnf-special-font '(7 Courier "Black" "Gray95" bold italic) |
1335 | "*Specify special font. | |
1336 | ||
1337 | See documentation for `ebnf-production-font'." | |
1338 | :type '(list :tag "Special Font" | |
1339 | (number :tag "Font Size") | |
1340 | (symbol :tag "Font Name") | |
1341 | (choice :tag "Foreground Color" | |
1342 | (string :tag "Name") | |
1343 | (other :tag "Default" nil)) | |
1344 | (choice :tag "Background Color" | |
1345 | (string :tag "Name") | |
1346 | (other :tag "Default" nil)) | |
1347 | (repeat :tag "Font Attributes" :inline t | |
1348 | (choice (const bold) (const italic) | |
1349 | (const underline) (const strikeout) | |
1350 | (const overline) (const shadow) | |
1351 | (const box) (const outline)))) | |
b11b1870 | 1352 | :version "20" |
984ae001 GM |
1353 | :group 'ebnf-special) |
1354 | ||
1355 | ||
1356 | (defcustom ebnf-special-shape 'bevel | |
1357 | "*Specify special box shape. | |
1358 | ||
1359 | See documentation for `ebnf-non-terminal-shape'." | |
1360 | :type '(radio :tag "Special Shape" | |
1361 | (const miter) (const round) (const bevel)) | |
b11b1870 | 1362 | :version "20" |
984ae001 GM |
1363 | :group 'ebnf-special) |
1364 | ||
1365 | ||
1366 | (defcustom ebnf-special-shadow nil | |
1367 | "*Non-nil means special box will have a shadow." | |
1368 | :type 'boolean | |
b11b1870 | 1369 | :version "20" |
984ae001 GM |
1370 | :group 'ebnf-special) |
1371 | ||
1372 | ||
1373 | (defcustom ebnf-special-border-width 0.5 | |
1374 | "*Specify border width for special box." | |
1375 | :type 'number | |
b11b1870 | 1376 | :version "20" |
984ae001 GM |
1377 | :group 'ebnf-special) |
1378 | ||
1379 | ||
1380 | (defcustom ebnf-special-border-color "Black" | |
1381 | "*Specify border color for special box." | |
1382 | :type 'string | |
b11b1870 | 1383 | :version "20" |
984ae001 GM |
1384 | :group 'ebnf-special) |
1385 | ||
1386 | ||
1387 | (defcustom ebnf-except-font '(7 Courier "Black" "Gray90" bold italic) | |
1388 | "*Specify except font. | |
1389 | ||
1390 | See documentation for `ebnf-production-font'." | |
1391 | :type '(list :tag "Except Font" | |
1392 | (number :tag "Font Size") | |
1393 | (symbol :tag "Font Name") | |
1394 | (choice :tag "Foreground Color" | |
1395 | (string :tag "Name") | |
1396 | (other :tag "Default" nil)) | |
1397 | (choice :tag "Background Color" | |
1398 | (string :tag "Name") | |
1399 | (other :tag "Default" nil)) | |
1400 | (repeat :tag "Font Attributes" :inline t | |
1401 | (choice (const bold) (const italic) | |
1402 | (const underline) (const strikeout) | |
1403 | (const overline) (const shadow) | |
1404 | (const box) (const outline)))) | |
b11b1870 | 1405 | :version "20" |
984ae001 GM |
1406 | :group 'ebnf-except) |
1407 | ||
1408 | ||
1409 | (defcustom ebnf-except-shape 'bevel | |
1410 | "*Specify except box shape. | |
1411 | ||
1412 | See documentation for `ebnf-non-terminal-shape'." | |
1413 | :type '(radio :tag "Except Shape" | |
1414 | (const miter) (const round) (const bevel)) | |
b11b1870 | 1415 | :version "20" |
984ae001 GM |
1416 | :group 'ebnf-except) |
1417 | ||
1418 | ||
1419 | (defcustom ebnf-except-shadow nil | |
1420 | "*Non-nil means except box will have a shadow." | |
1421 | :type 'boolean | |
b11b1870 | 1422 | :version "20" |
984ae001 GM |
1423 | :group 'ebnf-except) |
1424 | ||
1425 | ||
1426 | (defcustom ebnf-except-border-width 0.25 | |
1427 | "*Specify border width for except box." | |
1428 | :type 'number | |
b11b1870 | 1429 | :version "20" |
984ae001 GM |
1430 | :group 'ebnf-except) |
1431 | ||
1432 | ||
1433 | (defcustom ebnf-except-border-color "Black" | |
1434 | "*Specify border color for except box." | |
1435 | :type 'string | |
b11b1870 | 1436 | :version "20" |
984ae001 GM |
1437 | :group 'ebnf-except) |
1438 | ||
1439 | ||
1440 | (defcustom ebnf-repeat-font '(7 Courier "Black" "Gray85" bold italic) | |
1441 | "*Specify repeat font. | |
1442 | ||
1443 | See documentation for `ebnf-production-font'." | |
1444 | :type '(list :tag "Repeat Font" | |
1445 | (number :tag "Font Size") | |
1446 | (symbol :tag "Font Name") | |
1447 | (choice :tag "Foreground Color" | |
1448 | (string :tag "Name") | |
1449 | (other :tag "Default" nil)) | |
1450 | (choice :tag "Background Color" | |
1451 | (string :tag "Name") | |
1452 | (other :tag "Default" nil)) | |
1453 | (repeat :tag "Font Attributes" :inline t | |
1454 | (choice (const bold) (const italic) | |
1455 | (const underline) (const strikeout) | |
1456 | (const overline) (const shadow) | |
1457 | (const box) (const outline)))) | |
b11b1870 | 1458 | :version "20" |
984ae001 GM |
1459 | :group 'ebnf-repeat) |
1460 | ||
1461 | ||
1462 | (defcustom ebnf-repeat-shape 'bevel | |
1463 | "*Specify repeat box shape. | |
1464 | ||
1465 | See documentation for `ebnf-non-terminal-shape'." | |
1466 | :type '(radio :tag "Repeat Shape" | |
1467 | (const miter) (const round) (const bevel)) | |
b11b1870 | 1468 | :version "20" |
984ae001 GM |
1469 | :group 'ebnf-repeat) |
1470 | ||
1471 | ||
1472 | (defcustom ebnf-repeat-shadow nil | |
1473 | "*Non-nil means repeat box will have a shadow." | |
1474 | :type 'boolean | |
b11b1870 | 1475 | :version "20" |
984ae001 GM |
1476 | :group 'ebnf-repeat) |
1477 | ||
1478 | ||
1479 | (defcustom ebnf-repeat-border-width 0.0 | |
1480 | "*Specify border width for repeat box." | |
1481 | :type 'number | |
b11b1870 | 1482 | :version "20" |
984ae001 GM |
1483 | :group 'ebnf-repeat) |
1484 | ||
1485 | ||
1486 | (defcustom ebnf-repeat-border-color "Black" | |
1487 | "*Specify border color for repeat box." | |
1488 | :type 'string | |
b11b1870 | 1489 | :version "20" |
984ae001 GM |
1490 | :group 'ebnf-repeat) |
1491 | ||
1492 | ||
1493 | (defcustom ebnf-terminal-font '(7 Courier "Black" "White") | |
1494 | "*Specify terminal font. | |
1495 | ||
1496 | See documentation for `ebnf-production-font'." | |
1497 | :type '(list :tag "Terminal Font" | |
1498 | (number :tag "Font Size") | |
1499 | (symbol :tag "Font Name") | |
1500 | (choice :tag "Foreground Color" | |
1501 | (string :tag "Name") | |
1502 | (other :tag "Default" nil)) | |
1503 | (choice :tag "Background Color" | |
1504 | (string :tag "Name") | |
1505 | (other :tag "Default" nil)) | |
1506 | (repeat :tag "Font Attributes" :inline t | |
1507 | (choice (const bold) (const italic) | |
1508 | (const underline) (const strikeout) | |
1509 | (const overline) (const shadow) | |
1510 | (const box) (const outline)))) | |
b11b1870 | 1511 | :version "20" |
984ae001 GM |
1512 | :group 'ebnf-terminal) |
1513 | ||
1514 | ||
1515 | (defcustom ebnf-terminal-shape 'miter | |
1516 | "*Specify terminal box shape. | |
1517 | ||
1518 | See documentation for `ebnf-non-terminal-shape'." | |
1519 | :type '(radio :tag "Terminal Shape" | |
1520 | (const miter) (const round) (const bevel)) | |
b11b1870 | 1521 | :version "20" |
984ae001 GM |
1522 | :group 'ebnf-terminal) |
1523 | ||
1524 | ||
1525 | (defcustom ebnf-terminal-shadow nil | |
1526 | "*Non-nil means terminal box will have a shadow." | |
1527 | :type 'boolean | |
b11b1870 | 1528 | :version "20" |
984ae001 GM |
1529 | :group 'ebnf-terminal) |
1530 | ||
1531 | ||
1532 | (defcustom ebnf-terminal-border-width 1.0 | |
1533 | "*Specify border width for terminal box." | |
1534 | :type 'number | |
b11b1870 | 1535 | :version "20" |
984ae001 GM |
1536 | :group 'ebnf-terminal) |
1537 | ||
1538 | ||
1539 | (defcustom ebnf-terminal-border-color "Black" | |
1540 | "*Specify border color for terminal box." | |
1541 | :type 'string | |
b11b1870 | 1542 | :version "20" |
984ae001 GM |
1543 | :group 'ebnf-terminal) |
1544 | ||
1545 | ||
ac4780a1 VJL |
1546 | (defcustom ebnf-production-name-p t |
1547 | "*Non-nil means production name will be printed." | |
1548 | :type 'boolean | |
b11b1870 | 1549 | :version "20" |
ac4780a1 VJL |
1550 | :group 'ebnf-production) |
1551 | ||
1552 | ||
984ae001 GM |
1553 | (defcustom ebnf-sort-production nil |
1554 | "*Specify how productions are sorted. | |
1555 | ||
1556 | Valid values are: | |
1557 | ||
1558 | nil don't sort productions. | |
1559 | `ascending' ascending sort. | |
1560 | any other value descending sort." | |
1561 | :type '(radio :tag "Production Sort" | |
1562 | (const :tag "Ascending" ascending) | |
1563 | (const :tag "Descending" descending) | |
1564 | (other :tag "No Sort" nil)) | |
b11b1870 | 1565 | :version "20" |
984ae001 GM |
1566 | :group 'ebnf-production) |
1567 | ||
1568 | ||
1569 | (defcustom ebnf-production-font '(10 Helvetica "Black" "White" bold) | |
1570 | "*Specify production header font. | |
1571 | ||
1572 | It is a list with the following form: | |
1573 | ||
1574 | (SIZE NAME FOREGROUND BACKGROUND ATTRIBUTE...) | |
1575 | ||
1576 | Where: | |
1577 | SIZE is the font size. | |
1578 | NAME is the font name symbol. | |
1579 | ATTRIBUTE is one of the following symbols: | |
1580 | bold - use bold font. | |
1581 | italic - use italic font. | |
1582 | underline - put a line under text. | |
1583 | strikeout - like underline, but the line is in middle of text. | |
1584 | overline - like underline, but the line is over the text. | |
1585 | shadow - text will have a shadow. | |
1586 | box - text will be surrounded by a box. | |
1587 | outline - print characters as hollow outlines. | |
1588 | FOREGROUND is a foreground string color name; if it's nil, the default color is | |
1589 | \"Black\". | |
1590 | BACKGROUND is a background string color name; if it's nil, the default color is | |
1591 | \"White\". | |
1592 | ||
1593 | See `ps-font-info-database' for valid font name." | |
1594 | :type '(list :tag "Production Font" | |
1595 | (number :tag "Font Size") | |
1596 | (symbol :tag "Font Name") | |
1597 | (choice :tag "Foreground Color" | |
1598 | (string :tag "Name") | |
1599 | (other :tag "Default" nil)) | |
1600 | (choice :tag "Background Color" | |
1601 | (string :tag "Name") | |
1602 | (other :tag "Default" nil)) | |
1603 | (repeat :tag "Font Attributes" :inline t | |
1604 | (choice (const bold) (const italic) | |
1605 | (const underline) (const strikeout) | |
1606 | (const overline) (const shadow) | |
1607 | (const box) (const outline)))) | |
b11b1870 | 1608 | :version "20" |
984ae001 GM |
1609 | :group 'ebnf-production) |
1610 | ||
1611 | ||
1612 | (defcustom ebnf-non-terminal-font '(7 Helvetica "Black" "White") | |
1613 | "*Specify non-terminal font. | |
1614 | ||
1615 | See documentation for `ebnf-production-font'." | |
1616 | :type '(list :tag "Non-Terminal Font" | |
1617 | (number :tag "Font Size") | |
1618 | (symbol :tag "Font Name") | |
1619 | (choice :tag "Foreground Color" | |
1620 | (string :tag "Name") | |
1621 | (other :tag "Default" nil)) | |
1622 | (choice :tag "Background Color" | |
1623 | (string :tag "Name") | |
1624 | (other :tag "Default" nil)) | |
1625 | (repeat :tag "Font Attributes" :inline t | |
1626 | (choice (const bold) (const italic) | |
1627 | (const underline) (const strikeout) | |
1628 | (const overline) (const shadow) | |
1629 | (const box) (const outline)))) | |
b11b1870 | 1630 | :version "20" |
984ae001 GM |
1631 | :group 'ebnf-non-terminal) |
1632 | ||
1633 | ||
1634 | (defcustom ebnf-non-terminal-shape 'round | |
1635 | "*Specify non-terminal box shape. | |
1636 | ||
1637 | Valid values are: | |
1638 | ||
1639 | `miter' +-------+ | |
1640 | | | | |
1641 | +-------+ | |
1642 | ||
1643 | `round' ------- | |
1644 | ( ) | |
1645 | ------- | |
1646 | ||
1647 | `bevel' /-------\\ | |
1648 | | | | |
1649 | \\-------/ | |
1650 | ||
1651 | Any other value is treated as `miter'." | |
1652 | :type '(radio :tag "Non-Terminal Shape" | |
1653 | (const miter) (const round) (const bevel)) | |
b11b1870 | 1654 | :version "20" |
984ae001 GM |
1655 | :group 'ebnf-non-terminal) |
1656 | ||
1657 | ||
1658 | (defcustom ebnf-non-terminal-shadow nil | |
1659 | "*Non-nil means non-terminal box will have a shadow." | |
1660 | :type 'boolean | |
b11b1870 | 1661 | :version "20" |
984ae001 GM |
1662 | :group 'ebnf-non-terminal) |
1663 | ||
1664 | ||
1665 | (defcustom ebnf-non-terminal-border-width 1.0 | |
1666 | "*Specify border width for non-terminal box." | |
1667 | :type 'number | |
b11b1870 | 1668 | :version "20" |
984ae001 GM |
1669 | :group 'ebnf-non-terminal) |
1670 | ||
1671 | ||
1672 | (defcustom ebnf-non-terminal-border-color "Black" | |
1673 | "*Specify border color for non-terminal box." | |
1674 | :type 'string | |
b11b1870 | 1675 | :version "20" |
984ae001 GM |
1676 | :group 'ebnf-non-terminal) |
1677 | ||
1678 | ||
1679 | (defcustom ebnf-arrow-shape 'hollow | |
1680 | "*Specify the arrow shape. | |
1681 | ||
1682 | Valid values are: | |
1683 | ||
1684 | `none' ====== | |
1685 | ||
1686 | `semi-up' * `transparent' * | |
1687 | * |* | |
1688 | =====* | * | |
1689 | ==+==* | |
1690 | | * | |
1691 | |* | |
1692 | * | |
1693 | ||
1694 | `semi-down' =====* `hollow' * | |
1695 | * |* | |
1696 | * | * | |
1697 | ==+ * | |
1698 | | * | |
1699 | |* | |
1700 | * | |
1701 | ||
1702 | `simple' * `full' * | |
1703 | * |* | |
1704 | =====* |X* | |
1705 | * ==+XX* | |
1706 | * |X* | |
1707 | |* | |
1708 | * | |
1709 | ||
ac4780a1 VJL |
1710 | `semi-up-hollow' `semi-up-full' |
1711 | * * | |
1712 | |* |* | |
1713 | | * |X* | |
1714 | ==+==* ==+==* | |
1715 | ||
1716 | `semi-down-hollow' `semi-down-full' | |
1717 | ==+==* ==+==* | |
1718 | | * |X* | |
1719 | |* |* | |
1720 | * * | |
1721 | ||
984ae001 GM |
1722 | `user' See also documentation for variable `ebnf-user-arrow'. |
1723 | ||
1724 | Any other value is treated as `none'." | |
1725 | :type '(radio :tag "Arrow Shape" | |
ac4780a1 VJL |
1726 | (const none) (const semi-up) |
1727 | (const semi-down) (const simple) | |
1728 | (const transparent) (const hollow) | |
1729 | (const full) (const semi-up-hollow) | |
1730 | (const semi-down-hollow) (const semi-up-full) | |
1731 | (const semi-down-full) (const user)) | |
b11b1870 | 1732 | :version "20" |
984ae001 GM |
1733 | :group 'ebnf-shape) |
1734 | ||
1735 | ||
1736 | (defcustom ebnf-chart-shape 'round | |
1737 | "*Specify chart flow shape. | |
1738 | ||
1739 | See documentation for `ebnf-non-terminal-shape'." | |
1740 | :type '(radio :tag "Chart Flow Shape" | |
1741 | (const miter) (const round) (const bevel)) | |
b11b1870 | 1742 | :version "20" |
984ae001 GM |
1743 | :group 'ebnf-shape) |
1744 | ||
1745 | ||
1746 | (defcustom ebnf-user-arrow nil | |
bf061ba6 | 1747 | "*Specify a sexp for user arrow shape (a PostScript code). |
984ae001 | 1748 | |
bf061ba6 GM |
1749 | When evaluated, the sexp should return nil or a string containing PostScript |
1750 | code. PostScript code should draw a right arrow. | |
984ae001 GM |
1751 | |
1752 | The anatomy of a right arrow is: | |
1753 | ||
1754 | ...... Initial position | |
1755 | : | |
1756 | : *................. | |
1757 | : | * } } | |
1758 | : | * } hT4 } | |
1759 | v | * } } | |
1760 | ======+======*... } hT2 | |
1761 | : | *: } } | |
1762 | : | * : } hT4 } | |
1763 | : | * : } } | |
1764 | : *................. | |
1765 | : : : | |
1766 | : : :.......... | |
1767 | : : } hT2 } | |
1768 | : :.......... } hT | |
1769 | : } hT2 } | |
1770 | :....................... | |
1771 | ||
b685181e GM |
1772 | Where `hT', `hT2' and `hT4' are predefined PostScript variable names that can |
1773 | be used to generate your own arrow. As these variables are used along | |
1774 | PostScript execution, *DON'T* modify the values of them. Instead, copy the | |
1775 | values, if you need to modify them. | |
984ae001 GM |
1776 | |
1777 | The relation between these variables is: hT = 2 * hT2 = 4 * hT4. | |
1778 | ||
1779 | The variable `ebnf-user-arrow' is only used when `ebnf-arrow-shape' is set to | |
bf061ba6 GM |
1780 | symbol `user'." |
1781 | :type '(sexp :tag "User Arrow Shape") | |
b11b1870 | 1782 | :version "20" |
984ae001 GM |
1783 | :group 'ebnf-shape) |
1784 | ||
1785 | ||
1786 | (defcustom ebnf-syntax 'ebnf | |
1787 | "*Specify syntax to be recognized. | |
1788 | ||
1789 | Valid values are: | |
1790 | ||
887448e1 GM |
1791 | `ebnf' ebnf2ps recognizes the syntax described in ebnf2ps |
1792 | documentation. | |
984ae001 GM |
1793 | The following variables *ONLY* have effect with this |
1794 | setting: | |
1795 | `ebnf-terminal-regexp', `ebnf-case-fold-search', | |
1796 | `ebnf-lex-comment-char' and `ebnf-lex-eop-char'. | |
1797 | ||
ac4780a1 | 1798 | `abnf' ebnf2ps recognizes the syntax described in the URL: |
97818b07 | 1799 | `http://www.ietf.org/rfc/rfc2234.txt' |
ac4780a1 VJL |
1800 | (\"Augmented BNF for Syntax Specifications: ABNF\"). |
1801 | ||
984ae001 GM |
1802 | `iso-ebnf' ebnf2ps recognizes the syntax described in the URL: |
1803 | `http://www.cl.cam.ac.uk/~mgk25/iso-ebnf.html' | |
1804 | (\"International Standard of the ISO EBNF Notation\"). | |
1805 | The following variables *ONLY* have effect with this | |
1806 | setting: | |
1807 | `ebnf-iso-alternative-p' and `ebnf-iso-normalize-p'. | |
1808 | ||
1809 | `yacc' ebnf2ps recognizes the Yacc/Bison syntax. | |
1810 | The following variable *ONLY* has effect with this | |
1811 | setting: | |
1812 | `ebnf-yac-ignore-error-recovery'. | |
1813 | ||
6ca94f87 VJL |
1814 | `ebnfx' ebnf2ps recognizes the syntax described in the URL: |
1815 | `http://www.w3.org/TR/2004/REC-xml-20040204/#sec-notation' | |
1816 | (\"Extensible Markup Language (XML) 1.0 (Third Edition)\") | |
1817 | ||
6411a60a VJL |
1818 | `dtd' ebnf2ps recognizes the syntax described in the URL: |
1819 | `http://www.w3.org/TR/2004/REC-xml-20040204/' | |
1820 | (\"Extensible Markup Language (XML) 1.0 (Third Edition)\") | |
1821 | ||
984ae001 GM |
1822 | Any other value is treated as `ebnf'." |
1823 | :type '(radio :tag "Syntax" | |
6ca94f87 | 1824 | (const ebnf) (const abnf) (const iso-ebnf) |
6411a60a | 1825 | (const yacc) (const ebnfx) (const dtd)) |
b11b1870 | 1826 | :version "20" |
ab3256ed | 1827 | :group 'ebnf-syntactic) |
984ae001 GM |
1828 | |
1829 | ||
1830 | (defcustom ebnf-lex-comment-char ?\; | |
1831 | "*Specify the line comment character. | |
1832 | ||
1833 | It's used only when `ebnf-syntax' is `ebnf'." | |
1834 | :type 'character | |
b11b1870 | 1835 | :version "20" |
ab3256ed | 1836 | :group 'ebnf-syntactic) |
984ae001 GM |
1837 | |
1838 | ||
1839 | (defcustom ebnf-lex-eop-char ?. | |
1840 | "*Specify the end of production character. | |
1841 | ||
1842 | It's used only when `ebnf-syntax' is `ebnf'." | |
1843 | :type 'character | |
b11b1870 | 1844 | :version "20" |
ab3256ed | 1845 | :group 'ebnf-syntactic) |
984ae001 GM |
1846 | |
1847 | ||
1848 | (defcustom ebnf-terminal-regexp nil | |
1849 | "*Specify how it's a terminal name. | |
1850 | ||
1851 | If it's nil, the terminal name must be enclosed by `\"'. | |
1852 | If it's a string, it should be a regexp that it'll be used to determine a | |
1853 | terminal name; terminal name may also be enclosed by `\"'. | |
1854 | ||
1855 | It's used only when `ebnf-syntax' is `ebnf'." | |
1856 | :type '(radio :tag "Terminal Name" | |
1857 | (const nil) regexp) | |
b11b1870 | 1858 | :version "20" |
ab3256ed | 1859 | :group 'ebnf-syntactic) |
984ae001 GM |
1860 | |
1861 | ||
1862 | (defcustom ebnf-case-fold-search nil | |
1863 | "*Non-nil means ignore case on matching. | |
1864 | ||
1865 | It's only used when `ebnf-terminal-regexp' is non-nil and when `ebnf-syntax' is | |
1866 | `ebnf'." | |
1867 | :type 'boolean | |
b11b1870 | 1868 | :version "20" |
ab3256ed | 1869 | :group 'ebnf-syntactic) |
984ae001 GM |
1870 | |
1871 | ||
1872 | (defcustom ebnf-iso-alternative-p nil | |
1873 | "*Non-nil means use alternative ISO EBNF. | |
1874 | ||
1875 | It's only used when `ebnf-syntax' is `iso-ebnf'. | |
1876 | ||
1877 | This variable affects the following symbol set: | |
1878 | ||
1879 | STANDARD ALTERNATIVE | |
1880 | | ==> / or ! | |
1881 | [ ==> (/ | |
1882 | ] ==> /) | |
1883 | { ==> (: | |
1884 | } ==> :) | |
1885 | ; ==> ." | |
1886 | :type 'boolean | |
b11b1870 | 1887 | :version "20" |
ab3256ed | 1888 | :group 'ebnf-syntactic) |
984ae001 GM |
1889 | |
1890 | ||
1891 | (defcustom ebnf-iso-normalize-p nil | |
1892 | "*Non-nil means normalize ISO EBNF syntax names. | |
1893 | ||
1894 | Normalize a name means that several contiguous spaces inside name become a | |
1895 | single space, so \"A B C\" is normalized to \"A B C\". | |
1896 | ||
1897 | It's only used when `ebnf-syntax' is `iso-ebnf'." | |
1898 | :type 'boolean | |
b11b1870 | 1899 | :version "20" |
ab3256ed | 1900 | :group 'ebnf-syntactic) |
984ae001 GM |
1901 | |
1902 | ||
ac4780a1 VJL |
1903 | (defcustom ebnf-file-suffix-regexp "\.[Bb][Nn][Ff]$" |
1904 | "*Specify file name suffix that contains EBNF. | |
1905 | ||
1906 | See `ebnf-eps-directory' command." | |
1907 | :type 'regexp | |
b11b1870 | 1908 | :version "20" |
ac4780a1 VJL |
1909 | :group 'ebnf2ps) |
1910 | ||
1911 | ||
984ae001 GM |
1912 | (defcustom ebnf-eps-prefix "ebnf--" |
1913 | "*Specify EPS prefix file name. | |
1914 | ||
1915 | See `ebnf-eps-buffer' and `ebnf-eps-region' commands." | |
1916 | :type 'string | |
b11b1870 | 1917 | :version "20" |
984ae001 GM |
1918 | :group 'ebnf2ps) |
1919 | ||
1920 | ||
3ced5caa VJL |
1921 | (defcustom ebnf-eps-header-font '(11 Helvetica "Black" "White" bold) |
1922 | "*Specify EPS header font. | |
1923 | ||
1924 | See documentation for `ebnf-production-font'. | |
1925 | ||
1926 | See `ebnf-eps-buffer' and `ebnf-eps-region' commands." | |
1927 | :type '(list :tag "EPS Header Font" | |
1928 | (number :tag "Font Size") | |
1929 | (symbol :tag "Font Name") | |
1930 | (choice :tag "Foreground Color" | |
1931 | (string :tag "Name") | |
1932 | (other :tag "Default" nil)) | |
1933 | (choice :tag "Background Color" | |
1934 | (string :tag "Name") | |
1935 | (other :tag "Default" nil)) | |
1936 | (repeat :tag "Font Attributes" :inline t | |
1937 | (choice (const bold) (const italic) | |
1938 | (const underline) (const strikeout) | |
1939 | (const overline) (const shadow) | |
1940 | (const box) (const outline)))) | |
1941 | :version "22" | |
1942 | :group 'ebnf2ps) | |
1943 | ||
1944 | ||
1945 | (defcustom ebnf-eps-header nil | |
1946 | "*Specify EPS header. | |
1947 | ||
1948 | The value should be a string, a symbol or nil. | |
1949 | ||
1950 | String is inserted unchanged. | |
1951 | ||
1952 | For symbol bounded to a function, the function is called and should return a | |
1953 | string. For symbol bounded to a value, the value should be a string. | |
1954 | ||
1955 | If symbol is unbounded, it is silently ignored. | |
1956 | ||
1957 | Empty string or nil mean that no header will be generated. | |
1958 | ||
1959 | Note that when the header action comment (;H in EBNF syntax) is specified, the | |
1960 | string in the header action comment is processed and, if it returns a non-empty | |
1961 | string, it's used to generate the header. The header action comment accepts | |
1962 | the following formats: | |
1963 | ||
1964 | %% prints a % character. | |
1965 | ||
1966 | %H prints the `ebnf-eps-header' value. | |
1967 | ||
1968 | %F prints the `ebnf-eps-footer' (which see) value. | |
1969 | ||
1970 | Any other format is ignored, that is, if, for example, it's used %s then %s | |
1971 | characters are stripped out from the header. If header action comment is an | |
1972 | empty string, no header is generated until a non-empty header is specified or | |
1973 | `ebnf-eps-header' has a non-empty string value." | |
1974 | :type '(repeat (choice :menu-tag "EPS Header" | |
1975 | :tag "EPS Header" | |
1976 | string symbol (const :tag "No Header" nil ))) | |
1977 | :version "22" | |
1978 | :group 'ebnf2ps) | |
1979 | ||
1980 | ||
1981 | (defcustom ebnf-eps-footer-font '(7 Helvetica "Black" "White" bold) | |
1982 | "*Specify EPS footer font. | |
1983 | ||
1984 | See documentation for `ebnf-production-font'. | |
1985 | ||
1986 | See `ebnf-eps-buffer' and `ebnf-eps-region' commands." | |
1987 | :type '(list :tag "EPS Footer Font" | |
1988 | (number :tag "Font Size") | |
1989 | (symbol :tag "Font Name") | |
1990 | (choice :tag "Foreground Color" | |
1991 | (string :tag "Name") | |
1992 | (other :tag "Default" nil)) | |
1993 | (choice :tag "Background Color" | |
1994 | (string :tag "Name") | |
1995 | (other :tag "Default" nil)) | |
1996 | (repeat :tag "Font Attributes" :inline t | |
1997 | (choice (const bold) (const italic) | |
1998 | (const underline) (const strikeout) | |
1999 | (const overline) (const shadow) | |
2000 | (const box) (const outline)))) | |
2001 | :version "22" | |
2002 | :group 'ebnf2ps) | |
2003 | ||
2004 | ||
2005 | (defcustom ebnf-eps-footer nil | |
2006 | "*Specify EPS footer. | |
2007 | ||
2008 | The value should be a string, a symbol or nil. | |
2009 | ||
2010 | String is inserted unchanged. | |
2011 | ||
2012 | For symbol bounded to a function, the function is called and should return a | |
2013 | string. For symbol bounded to a value, the value should be a string. | |
2014 | ||
2015 | If symbol is unbounded, it is silently ignored. | |
2016 | ||
2017 | Empty string or nil mean that no footer will be generated. | |
2018 | ||
2019 | Note that when the footer action comment (;F in EBNF syntax) is specified, the | |
2020 | string in the footer action comment is processed and, if it returns a non-empty | |
2021 | string, it's used to generate the footer. The footer action comment accepts | |
2022 | the following formats: | |
2023 | ||
2024 | %% prints a % character. | |
2025 | ||
2026 | %H prints the `ebnf-eps-header' (which see) value. | |
2027 | ||
2028 | %F prints the `ebnf-eps-footer' value. | |
2029 | ||
2030 | Any other format is ignored, that is, if, for example, it's used %s then %s | |
2031 | characters are stripped out from the footer. If footer action comment is an | |
2032 | empty string, no footer is generated until a non-empty footer is specified or | |
2033 | `ebnf-eps-footer' has a non-empty string value." | |
2034 | :type '(repeat (choice :menu-tag "EPS Footer" | |
2035 | :tag "EPS Footer" | |
2036 | string symbol (const :tag "No Footer" nil ))) | |
2037 | :version "22" | |
2038 | :group 'ebnf2ps) | |
2039 | ||
2040 | ||
984ae001 GM |
2041 | (defcustom ebnf-entry-percentage 0.5 ; middle |
2042 | "*Specify entry height on alternatives. | |
2043 | ||
2044 | It must be a float between 0.0 (top) and 1.0 (bottom)." | |
2045 | :type 'number | |
b11b1870 | 2046 | :version "20" |
984ae001 GM |
2047 | :group 'ebnf2ps) |
2048 | ||
2049 | ||
2050 | (defcustom ebnf-default-width 0.6 | |
2051 | "*Specify additional border width over default terminal, non-terminal or | |
2052 | special." | |
2053 | :type 'number | |
b11b1870 | 2054 | :version "20" |
984ae001 GM |
2055 | :group 'ebnf2ps) |
2056 | ||
2057 | ||
2058 | ;; Printing color requires x-color-values. | |
2059 | (defcustom ebnf-color-p (or (fboundp 'x-color-values) ; Emacs | |
2060 | (fboundp 'color-instance-rgb-components)) ; XEmacs | |
2061 | "*Non-nil means use color." | |
2062 | :type 'boolean | |
b11b1870 | 2063 | :version "20" |
984ae001 GM |
2064 | :group 'ebnf2ps) |
2065 | ||
2066 | ||
2067 | (defcustom ebnf-line-width 1.0 | |
2068 | "*Specify flow line width." | |
2069 | :type 'number | |
b11b1870 | 2070 | :version "20" |
984ae001 GM |
2071 | :group 'ebnf2ps) |
2072 | ||
2073 | ||
2074 | (defcustom ebnf-line-color "Black" | |
2075 | "*Specify flow line color." | |
2076 | :type 'string | |
b11b1870 | 2077 | :version "20" |
984ae001 GM |
2078 | :group 'ebnf2ps) |
2079 | ||
2080 | ||
ed0aa46c VJL |
2081 | (defcustom ebnf-arrow-extra-width |
2082 | (if (eq ebnf-arrow-shape 'none) | |
2083 | 0.0 | |
2084 | (* (sqrt 5.0) 0.65 ebnf-line-width)) | |
2085 | "*Specify extra width for arrow shape drawing. | |
2086 | ||
2087 | The extra width is used to avoid that the arrowhead and the terminal border | |
2088 | overlap. It depens on `ebnf-arrow-shape' and `ebnf-line-width'." | |
2089 | :type 'number | |
2090 | :version "22" | |
2091 | :group 'ebnf-shape) | |
2092 | ||
2093 | ||
2094 | (defcustom ebnf-arrow-scale 1.0 | |
2095 | "*Specify the arrow scale. | |
2096 | ||
2097 | Values lower than 1.0, shrink the arrow. | |
2098 | Values greater than 1.0, expand the arrow." | |
2099 | :type 'number | |
2100 | :version "22" | |
2101 | :group 'ebnf-shape) | |
2102 | ||
2103 | ||
984ae001 GM |
2104 | (defcustom ebnf-debug-ps nil |
2105 | "*Non-nil means to generate PostScript debug procedures. | |
2106 | ||
2107 | It is intended to help PostScript programmers in debugging." | |
2108 | :type 'boolean | |
b11b1870 | 2109 | :version "20" |
984ae001 GM |
2110 | :group 'ebnf2ps) |
2111 | ||
2112 | ||
2113 | (defcustom ebnf-use-float-format t | |
2114 | "*Non-nil means use `%f' float format. | |
2115 | ||
2116 | The advantage of using float format is that ebnf2ps generates a little short | |
2117 | PostScript file. | |
2118 | ||
2119 | If it occurs the error message: | |
2120 | ||
2121 | Invalid format operation %f | |
2122 | ||
2123 | when executing ebnf2ps, set `ebnf-use-float-format' to nil." | |
2124 | :type 'boolean | |
b11b1870 | 2125 | :version "20" |
984ae001 GM |
2126 | :group 'ebnf2ps) |
2127 | ||
2128 | ||
ac4780a1 | 2129 | (defcustom ebnf-stop-on-error nil |
6f19f70a | 2130 | "*Non-nil means signal error and stop. Otherwise, signal error and continue." |
ac4780a1 | 2131 | :type 'boolean |
b11b1870 | 2132 | :version "20" |
ac4780a1 VJL |
2133 | :group 'ebnf2ps) |
2134 | ||
2135 | ||
984ae001 GM |
2136 | (defcustom ebnf-yac-ignore-error-recovery nil |
2137 | "*Non-nil means ignore error recovery. | |
2138 | ||
2139 | It's only used when `ebnf-syntax' is `yacc'." | |
2140 | :type 'boolean | |
b11b1870 | 2141 | :version "20" |
ab3256ed | 2142 | :group 'ebnf-syntactic) |
984ae001 GM |
2143 | |
2144 | ||
2145 | (defcustom ebnf-ignore-empty-rule nil | |
2146 | "*Non-nil means ignore empty rules. | |
2147 | ||
2148 | It's interesting to set this variable if your Yacc/Bison grammar has a lot of | |
2149 | middle action rule." | |
2150 | :type 'boolean | |
b11b1870 | 2151 | :version "20" |
984ae001 GM |
2152 | :group 'ebnf-optimization) |
2153 | ||
2154 | ||
2155 | (defcustom ebnf-optimize nil | |
ab3256ed | 2156 | "*Non-nil means optimize syntactic chart of rules. |
984ae001 GM |
2157 | |
2158 | The following optimizations are done: | |
2159 | ||
2160 | left recursion: | |
2161 | 1. A = B | A C. ==> A = B {C}*. | |
2162 | 2. A = B | A B. ==> A = {B}+. | |
2163 | 3. A = | A B. ==> A = {B}*. | |
2164 | 4. A = B | A C B. ==> A = {B || C}+. | |
2165 | 5. A = B | D | A C | A E. ==> A = ( B | D ) { C | E }*. | |
2166 | ||
2167 | optional: | |
2168 | 6. A = B | . ==> A = [B]. | |
2169 | 7. A = | B . ==> A = [B]. | |
2170 | ||
ad96a7ef | 2171 | factorization: |
984ae001 GM |
2172 | 8. A = B C | B D. ==> A = B (C | D). |
2173 | 9. A = C B | D B. ==> A = (C | D) B. | |
2174 | 10. A = B C E | B D E. ==> A = B (C | D) E. | |
2175 | ||
2176 | The above optimizations are specially useful when `ebnf-syntax' is `yacc'." | |
2177 | :type 'boolean | |
b11b1870 | 2178 | :version "20" |
984ae001 GM |
2179 | :group 'ebnf-optimization) |
2180 | ||
3ced5caa VJL |
2181 | |
2182 | (defcustom ebnf-log nil | |
2183 | "*Non-nil means generate log messages. | |
2184 | ||
2185 | The log messages are generated into the buffer *Ebnf2ps Log*. | |
2186 | These messages are intended to help debugging ebnf2ps." | |
2187 | :type 'boolean | |
2188 | :version "22" | |
2189 | :group 'ebnf2ps) | |
2190 | ||
984ae001 | 2191 | \f |
6411a60a VJL |
2192 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2193 | ;; To make this file smaller, some commands go in a separate file. | |
2194 | ;; But autoload them here to make the separation invisible. | |
2195 | ;; Autoload is here to avoid compilation gripes. | |
2196 | ||
2197 | (autoload 'ebnf-eliminate-empty-rules "ebnf-otz" | |
2198 | "Eliminate empty rules.") | |
2199 | ||
2200 | (autoload 'ebnf-optimize "ebnf-otz" | |
2201 | "Syntactic chart optimizer.") | |
2202 | ||
2203 | (autoload 'ebnf-otz-initialize "ebnf-otz" | |
2204 | "Initialize optimizer.") | |
2205 | ||
2206 | \f | |
984ae001 GM |
2207 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2208 | ;; Customization | |
2209 | ||
2210 | ||
2211 | ;;;###autoload | |
2212 | (defun ebnf-customize () | |
2213 | "Customization for ebnf group." | |
2214 | (interactive) | |
2215 | (customize-group 'ebnf2ps)) | |
2216 | ||
2217 | \f | |
2218 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
2219 | ;; User commands | |
2220 | ||
2221 | ||
ac4780a1 VJL |
2222 | ;;;###autoload |
2223 | (defun ebnf-print-directory (&optional directory) | |
2224 | "Generate and print a PostScript syntactic chart image of DIRECTORY. | |
2225 | ||
2226 | If DIRECTORY is nil, it's used `default-directory'. | |
2227 | ||
2228 | The files in DIRECTORY that matches `ebnf-file-suffix-regexp' (which see) are | |
2229 | processed. | |
2230 | ||
2231 | See also `ebnf-print-buffer'." | |
2232 | (interactive | |
2233 | (list (read-file-name "Directory containing EBNF files (print): " | |
2234 | nil default-directory))) | |
3ced5caa | 2235 | (ebnf-log-header "(ebnf-print-directory %S)" directory) |
ac4780a1 VJL |
2236 | (ebnf-directory 'ebnf-print-buffer directory)) |
2237 | ||
2238 | ||
2239 | ;;;###autoload | |
2240 | (defun ebnf-print-file (file &optional do-not-kill-buffer-when-done) | |
2241 | "Generate and print a PostScript syntactic chart image of the file FILE. | |
2242 | ||
2243 | If optional arg DO-NOT-KILL-BUFFER-WHEN-DONE is non-nil, the buffer isn't | |
2244 | killed after process termination. | |
2245 | ||
2246 | See also `ebnf-print-buffer'." | |
2247 | (interactive "fEBNF file to generate PostScript and print from: ") | |
3ced5caa | 2248 | (ebnf-log-header "(ebnf-print-file %S %S)" file do-not-kill-buffer-when-done) |
ac4780a1 VJL |
2249 | (ebnf-file 'ebnf-print-buffer file do-not-kill-buffer-when-done)) |
2250 | ||
2251 | ||
984ae001 GM |
2252 | ;;;###autoload |
2253 | (defun ebnf-print-buffer (&optional filename) | |
ab3256ed | 2254 | "Generate and print a PostScript syntactic chart image of the buffer. |
984ae001 GM |
2255 | |
2256 | When called with a numeric prefix argument (C-u), prompts the user for | |
2257 | the name of a file to save the PostScript image in, instead of sending | |
2258 | it to the printer. | |
2259 | ||
2260 | More specifically, the FILENAME argument is treated as follows: if it | |
2261 | is nil, send the image to the printer. If FILENAME is a string, save | |
2262 | the PostScript image in a file with that name. If FILENAME is a | |
2263 | number, prompt the user for the name of the file to save in." | |
2264 | (interactive (list (ps-print-preprint current-prefix-arg))) | |
3ced5caa | 2265 | (ebnf-log-header "(ebnf-print-buffer %S)" filename) |
984ae001 GM |
2266 | (ebnf-print-region (point-min) (point-max) filename)) |
2267 | ||
2268 | ||
2269 | ;;;###autoload | |
2270 | (defun ebnf-print-region (from to &optional filename) | |
ab3256ed | 2271 | "Generate and print a PostScript syntactic chart image of the region. |
984ae001 GM |
2272 | Like `ebnf-print-buffer', but prints just the current region." |
2273 | (interactive (list (point) (mark) (ps-print-preprint current-prefix-arg))) | |
3ced5caa | 2274 | (ebnf-log-header "(ebnf-print-region %S %S %S)" from to filename) |
984ae001 GM |
2275 | (run-hooks 'ebnf-hook) |
2276 | (or (ebnf-spool-region from to) | |
2277 | (ps-do-despool filename))) | |
2278 | ||
2279 | ||
ac4780a1 VJL |
2280 | ;;;###autoload |
2281 | (defun ebnf-spool-directory (&optional directory) | |
2282 | "Generate and spool a PostScript syntactic chart image of DIRECTORY. | |
2283 | ||
2284 | If DIRECTORY is nil, it's used `default-directory'. | |
2285 | ||
2286 | The files in DIRECTORY that matches `ebnf-file-suffix-regexp' (which see) are | |
2287 | processed. | |
2288 | ||
2289 | See also `ebnf-spool-buffer'." | |
2290 | (interactive | |
2291 | (list (read-file-name "Directory containing EBNF files (spool): " | |
2292 | nil default-directory))) | |
3ced5caa | 2293 | (ebnf-log-header "(ebnf-spool-directory %S)" directory) |
ac4780a1 VJL |
2294 | (ebnf-directory 'ebnf-spool-buffer directory)) |
2295 | ||
2296 | ||
2297 | ;;;###autoload | |
2298 | (defun ebnf-spool-file (file &optional do-not-kill-buffer-when-done) | |
2299 | "Generate and spool a PostScript syntactic chart image of the file FILE. | |
2300 | ||
2301 | If optional arg DO-NOT-KILL-BUFFER-WHEN-DONE is non-nil, the buffer isn't | |
2302 | killed after process termination. | |
2303 | ||
2304 | See also `ebnf-spool-buffer'." | |
2305 | (interactive "fEBNF file to generate PostScript and spool from: ") | |
3ced5caa | 2306 | (ebnf-log-header "(ebnf-spool-file %S %S)" file do-not-kill-buffer-when-done) |
ac4780a1 VJL |
2307 | (ebnf-file 'ebnf-spool-buffer file do-not-kill-buffer-when-done)) |
2308 | ||
2309 | ||
984ae001 GM |
2310 | ;;;###autoload |
2311 | (defun ebnf-spool-buffer () | |
ab3256ed | 2312 | "Generate and spool a PostScript syntactic chart image of the buffer. |
984ae001 GM |
2313 | Like `ebnf-print-buffer' except that the PostScript image is saved in a |
2314 | local buffer to be sent to the printer later. | |
2315 | ||
2316 | Use the command `ebnf-despool' to send the spooled images to the printer." | |
2317 | (interactive) | |
3ced5caa | 2318 | (ebnf-log-header "(ebnf-spool-buffer)") |
984ae001 GM |
2319 | (ebnf-spool-region (point-min) (point-max))) |
2320 | ||
2321 | ||
2322 | ;;;###autoload | |
2323 | (defun ebnf-spool-region (from to) | |
ab3256ed | 2324 | "Generate a PostScript syntactic chart image of the region and spool locally. |
984ae001 GM |
2325 | Like `ebnf-spool-buffer', but spools just the current region. |
2326 | ||
2327 | Use the command `ebnf-despool' to send the spooled images to the printer." | |
2328 | (interactive "r") | |
3ced5caa | 2329 | (ebnf-log-header "(ebnf-spool-region %S)" from to) |
984ae001 GM |
2330 | (ebnf-generate-region from to 'ebnf-generate)) |
2331 | ||
2332 | ||
ac4780a1 VJL |
2333 | ;;;###autoload |
2334 | (defun ebnf-eps-directory (&optional directory) | |
2335 | "Generate EPS files from EBNF files in DIRECTORY. | |
2336 | ||
2337 | If DIRECTORY is nil, it's used `default-directory'. | |
2338 | ||
2339 | The files in DIRECTORY that matches `ebnf-file-suffix-regexp' (which see) are | |
2340 | processed. | |
2341 | ||
2342 | See also `ebnf-eps-buffer'." | |
2343 | (interactive | |
2344 | (list (read-file-name "Directory containing EBNF files (EPS): " | |
2345 | nil default-directory))) | |
3ced5caa | 2346 | (ebnf-log-header "(ebnf-eps-directory %S)" directory) |
ac4780a1 VJL |
2347 | (ebnf-directory 'ebnf-eps-buffer directory)) |
2348 | ||
2349 | ||
2350 | ;;;###autoload | |
2351 | (defun ebnf-eps-file (file &optional do-not-kill-buffer-when-done) | |
2352 | "Generate an EPS file from EBNF file FILE. | |
2353 | ||
2354 | If optional arg DO-NOT-KILL-BUFFER-WHEN-DONE is non-nil, the buffer isn't | |
2355 | killed after EPS generation. | |
2356 | ||
2357 | See also `ebnf-eps-buffer'." | |
2358 | (interactive "fEBNF file to generate EPS file from: ") | |
3ced5caa | 2359 | (ebnf-log-header "(ebnf-eps-file %S %S)" file do-not-kill-buffer-when-done) |
ac4780a1 VJL |
2360 | (ebnf-file 'ebnf-eps-buffer file do-not-kill-buffer-when-done)) |
2361 | ||
2362 | ||
984ae001 GM |
2363 | ;;;###autoload |
2364 | (defun ebnf-eps-buffer () | |
4303661c | 2365 | "Generate a PostScript syntactic chart image of the buffer in an EPS file. |
984ae001 | 2366 | |
815cbda2 | 2367 | Generate an EPS file for each production in the buffer. |
984ae001 GM |
2368 | The EPS file name has the following form: |
2369 | ||
2370 | <PREFIX><PRODUCTION>.eps | |
2371 | ||
2372 | <PREFIX> is given by variable `ebnf-eps-prefix'. | |
2373 | The default value is \"ebnf--\". | |
2374 | ||
2375 | <PRODUCTION> is the production name. | |
815cbda2 EZ |
2376 | Some characters in the production file name are replaced to |
2377 | produce a valid file name. For example, the production name | |
2378 | \"A/B + C\" is modified to produce \"A_B_+_C\", and the EPS | |
2379 | file name used in this case will be \"ebnf--A_B_+_C.eps\". | |
984ae001 | 2380 | |
815cbda2 | 2381 | WARNING: This function does *NOT* ask any confirmation to override existing |
3ced5caa | 2382 | files." |
984ae001 | 2383 | (interactive) |
3ced5caa | 2384 | (ebnf-log-header "(ebnf-eps-buffer)") |
984ae001 GM |
2385 | (ebnf-eps-region (point-min) (point-max))) |
2386 | ||
2387 | ||
2388 | ;;;###autoload | |
2389 | (defun ebnf-eps-region (from to) | |
4303661c | 2390 | "Generate a PostScript syntactic chart image of the region in an EPS file. |
984ae001 | 2391 | |
815cbda2 | 2392 | Generate an EPS file for each production in the region. |
984ae001 GM |
2393 | The EPS file name has the following form: |
2394 | ||
2395 | <PREFIX><PRODUCTION>.eps | |
2396 | ||
2397 | <PREFIX> is given by variable `ebnf-eps-prefix'. | |
2398 | The default value is \"ebnf--\". | |
2399 | ||
2400 | <PRODUCTION> is the production name. | |
815cbda2 EZ |
2401 | Some characters in the production file name are replaced to |
2402 | produce a valid file name. For example, the production name | |
2403 | \"A/B + C\" is modified to produce \"A_B_+_C\", and the EPS | |
2404 | file name used in this case will be \"ebnf--A_B_+_C.eps\". | |
984ae001 | 2405 | |
815cbda2 | 2406 | WARNING: This function does *NOT* ask any confirmation to override existing |
3ced5caa | 2407 | files." |
984ae001 | 2408 | (interactive "r") |
3ced5caa | 2409 | (ebnf-log-header "(ebnf-eps-region %S %S)" from to) |
984ae001 GM |
2410 | (let ((ebnf-eps-executing t)) |
2411 | (ebnf-generate-region from to 'ebnf-generate-eps))) | |
2412 | ||
2413 | ||
2414 | ;;;###autoload | |
2415 | (defalias 'ebnf-despool 'ps-despool) | |
2416 | ||
2417 | ||
cd0f9f85 VJL |
2418 | ;;;###autoload |
2419 | (defun ebnf-syntax-directory (&optional directory) | |
815cbda2 | 2420 | "Do a syntactic analysis of the files in DIRECTORY. |
cd0f9f85 | 2421 | |
815cbda2 | 2422 | If DIRECTORY is nil, use `default-directory'. |
cd0f9f85 | 2423 | |
815cbda2 EZ |
2424 | Only the files in DIRECTORY that match `ebnf-file-suffix-regexp' (which see) |
2425 | are processed. | |
cd0f9f85 VJL |
2426 | |
2427 | See also `ebnf-syntax-buffer'." | |
2428 | (interactive | |
2429 | (list (read-file-name "Directory containing EBNF files (syntax): " | |
2430 | nil default-directory))) | |
3ced5caa | 2431 | (ebnf-log-header "(ebnf-syntax-directory %S)" directory) |
cd0f9f85 VJL |
2432 | (ebnf-directory 'ebnf-syntax-buffer directory)) |
2433 | ||
2434 | ||
2435 | ;;;###autoload | |
2436 | (defun ebnf-syntax-file (file &optional do-not-kill-buffer-when-done) | |
815cbda2 | 2437 | "Do a syntactic analysis of the named FILE. |
cd0f9f85 VJL |
2438 | |
2439 | If optional arg DO-NOT-KILL-BUFFER-WHEN-DONE is non-nil, the buffer isn't | |
4e7d3274 | 2440 | killed after syntax checking. |
cd0f9f85 VJL |
2441 | |
2442 | See also `ebnf-syntax-buffer'." | |
2443 | (interactive "fEBNF file to check syntax: ") | |
3ced5caa | 2444 | (ebnf-log-header "(ebnf-syntax-file %S %S)" file do-not-kill-buffer-when-done) |
cd0f9f85 VJL |
2445 | (ebnf-file 'ebnf-syntax-buffer file do-not-kill-buffer-when-done)) |
2446 | ||
2447 | ||
984ae001 GM |
2448 | ;;;###autoload |
2449 | (defun ebnf-syntax-buffer () | |
815cbda2 | 2450 | "Do a syntactic analysis of the current buffer." |
984ae001 | 2451 | (interactive) |
3ced5caa | 2452 | (ebnf-log-header "(ebnf-syntax-buffer)") |
984ae001 GM |
2453 | (ebnf-syntax-region (point-min) (point-max))) |
2454 | ||
2455 | ||
2456 | ;;;###autoload | |
2457 | (defun ebnf-syntax-region (from to) | |
3ced5caa | 2458 | "Do a syntactic analysis of a region." |
984ae001 | 2459 | (interactive "r") |
3ced5caa | 2460 | (ebnf-log-header "(ebnf-syntax-region %S %S)" from to) |
984ae001 GM |
2461 | (ebnf-generate-region from to nil)) |
2462 | ||
2463 | \f | |
2464 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
2465 | ;; Utilities | |
2466 | ||
2467 | ||
2468 | ;;;###autoload | |
2469 | (defun ebnf-setup () | |
2470 | "Return the current ebnf2ps setup." | |
2471 | (format | |
2472 | " | |
6a5275dc GM |
2473 | ;;; ebnf2ps.el version %s |
2474 | ||
3ced5caa VJL |
2475 | ;;; Emacs version %S |
2476 | ||
ac4780a1 VJL |
2477 | \(setq ebnf-special-show-delimiter %S |
2478 | ebnf-special-font %s | |
984ae001 GM |
2479 | ebnf-special-shape %s |
2480 | ebnf-special-shadow %S | |
2481 | ebnf-special-border-width %S | |
2482 | ebnf-special-border-color %S | |
2483 | ebnf-except-font %s | |
2484 | ebnf-except-shape %s | |
2485 | ebnf-except-shadow %S | |
2486 | ebnf-except-border-width %S | |
2487 | ebnf-except-border-color %S | |
2488 | ebnf-repeat-font %s | |
2489 | ebnf-repeat-shape %s | |
2490 | ebnf-repeat-shadow %S | |
2491 | ebnf-repeat-border-width %S | |
2492 | ebnf-repeat-border-color %S | |
2493 | ebnf-terminal-regexp %S | |
2494 | ebnf-case-fold-search %S | |
2495 | ebnf-terminal-font %s | |
2496 | ebnf-terminal-shape %s | |
2497 | ebnf-terminal-shadow %S | |
2498 | ebnf-terminal-border-width %S | |
2499 | ebnf-terminal-border-color %S | |
2500 | ebnf-non-terminal-font %s | |
2501 | ebnf-non-terminal-shape %s | |
2502 | ebnf-non-terminal-shadow %S | |
2503 | ebnf-non-terminal-border-width %S | |
2504 | ebnf-non-terminal-border-color %S | |
ac4780a1 | 2505 | ebnf-production-name-p %S |
984ae001 GM |
2506 | ebnf-sort-production %s |
2507 | ebnf-production-font %s | |
2508 | ebnf-arrow-shape %s | |
2509 | ebnf-chart-shape %s | |
2510 | ebnf-user-arrow %s | |
2511 | ebnf-horizontal-orientation %S | |
2512 | ebnf-horizontal-max-height %S | |
2513 | ebnf-production-horizontal-space %S | |
2514 | ebnf-production-vertical-space %S | |
2515 | ebnf-justify-sequence %s | |
2516 | ebnf-lex-comment-char ?\\%03o | |
2517 | ebnf-lex-eop-char ?\\%03o | |
2518 | ebnf-syntax %s | |
2519 | ebnf-iso-alternative-p %S | |
2520 | ebnf-iso-normalize-p %S | |
ac4780a1 | 2521 | ebnf-file-suffix-regexp %S |
984ae001 | 2522 | ebnf-eps-prefix %S |
3ced5caa VJL |
2523 | ebnf-eps-header-font %s |
2524 | ebnf-eps-header %s | |
2525 | ebnf-eps-footer-font %s | |
2526 | ebnf-eps-footer %s | |
984ae001 GM |
2527 | ebnf-entry-percentage %S |
2528 | ebnf-color-p %S | |
2529 | ebnf-line-width %S | |
2530 | ebnf-line-color %S | |
3ced5caa VJL |
2531 | ebnf-arrow-extra-width %S |
2532 | ebnf-arrow-scale %S | |
984ae001 GM |
2533 | ebnf-debug-ps %S |
2534 | ebnf-use-float-format %S | |
ac4780a1 | 2535 | ebnf-stop-on-error %S |
984ae001 GM |
2536 | ebnf-yac-ignore-error-recovery %S |
2537 | ebnf-ignore-empty-rule %S | |
3ced5caa VJL |
2538 | ebnf-optimize %S |
2539 | ebnf-log %S) | |
6a5275dc GM |
2540 | |
2541 | ;;; ebnf2ps.el - end of settings | |
984ae001 | 2542 | " |
6a5275dc | 2543 | ebnf-version |
3ced5caa | 2544 | emacs-version |
ac4780a1 | 2545 | ebnf-special-show-delimiter |
984ae001 GM |
2546 | (ps-print-quote ebnf-special-font) |
2547 | (ps-print-quote ebnf-special-shape) | |
2548 | ebnf-special-shadow | |
2549 | ebnf-special-border-width | |
2550 | ebnf-special-border-color | |
2551 | (ps-print-quote ebnf-except-font) | |
2552 | (ps-print-quote ebnf-except-shape) | |
2553 | ebnf-except-shadow | |
2554 | ebnf-except-border-width | |
2555 | ebnf-except-border-color | |
2556 | (ps-print-quote ebnf-repeat-font) | |
2557 | (ps-print-quote ebnf-repeat-shape) | |
2558 | ebnf-repeat-shadow | |
2559 | ebnf-repeat-border-width | |
2560 | ebnf-repeat-border-color | |
2561 | ebnf-terminal-regexp | |
2562 | ebnf-case-fold-search | |
2563 | (ps-print-quote ebnf-terminal-font) | |
2564 | (ps-print-quote ebnf-terminal-shape) | |
2565 | ebnf-terminal-shadow | |
2566 | ebnf-terminal-border-width | |
2567 | ebnf-terminal-border-color | |
2568 | (ps-print-quote ebnf-non-terminal-font) | |
2569 | (ps-print-quote ebnf-non-terminal-shape) | |
2570 | ebnf-non-terminal-shadow | |
2571 | ebnf-non-terminal-border-width | |
2572 | ebnf-non-terminal-border-color | |
ac4780a1 | 2573 | ebnf-production-name-p |
984ae001 GM |
2574 | (ps-print-quote ebnf-sort-production) |
2575 | (ps-print-quote ebnf-production-font) | |
2576 | (ps-print-quote ebnf-arrow-shape) | |
2577 | (ps-print-quote ebnf-chart-shape) | |
2578 | (ps-print-quote ebnf-user-arrow) | |
2579 | ebnf-horizontal-orientation | |
2580 | ebnf-horizontal-max-height | |
2581 | ebnf-production-horizontal-space | |
2582 | ebnf-production-vertical-space | |
2583 | (ps-print-quote ebnf-justify-sequence) | |
2584 | ebnf-lex-comment-char | |
2585 | ebnf-lex-eop-char | |
2586 | (ps-print-quote ebnf-syntax) | |
2587 | ebnf-iso-alternative-p | |
2588 | ebnf-iso-normalize-p | |
ac4780a1 | 2589 | ebnf-file-suffix-regexp |
984ae001 | 2590 | ebnf-eps-prefix |
3ced5caa VJL |
2591 | (ps-print-quote ebnf-eps-header-font) |
2592 | (ps-print-quote ebnf-eps-header) | |
2593 | (ps-print-quote ebnf-eps-footer-font) | |
2594 | (ps-print-quote ebnf-eps-footer) | |
984ae001 GM |
2595 | ebnf-entry-percentage |
2596 | ebnf-color-p | |
2597 | ebnf-line-width | |
2598 | ebnf-line-color | |
3ced5caa VJL |
2599 | ebnf-arrow-extra-width |
2600 | ebnf-arrow-scale | |
984ae001 GM |
2601 | ebnf-debug-ps |
2602 | ebnf-use-float-format | |
ac4780a1 | 2603 | ebnf-stop-on-error |
984ae001 GM |
2604 | ebnf-yac-ignore-error-recovery |
2605 | ebnf-ignore-empty-rule | |
3ced5caa VJL |
2606 | ebnf-optimize |
2607 | ebnf-log)) | |
984ae001 GM |
2608 | |
2609 | \f | |
2610 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
2611 | ;; Style variables | |
2612 | ||
2613 | ||
2614 | (defvar ebnf-stack-style nil | |
2615 | "Used in functions `ebnf-reset-style', `ebnf-push-style' and | |
2616 | `ebnf-pop-style'.") | |
2617 | ||
2618 | ||
2619 | (defvar ebnf-current-style 'default | |
2620 | "Used in functions `ebnf-apply-style' and `ebnf-push-style'.") | |
2621 | ||
2622 | ||
2623 | (defconst ebnf-style-custom-list | |
ac4780a1 VJL |
2624 | '(ebnf-special-show-delimiter |
2625 | ebnf-special-font | |
984ae001 GM |
2626 | ebnf-special-shape |
2627 | ebnf-special-shadow | |
2628 | ebnf-special-border-width | |
2629 | ebnf-special-border-color | |
2630 | ebnf-except-font | |
2631 | ebnf-except-shape | |
2632 | ebnf-except-shadow | |
2633 | ebnf-except-border-width | |
2634 | ebnf-except-border-color | |
2635 | ebnf-repeat-font | |
2636 | ebnf-repeat-shape | |
2637 | ebnf-repeat-shadow | |
2638 | ebnf-repeat-border-width | |
2639 | ebnf-repeat-border-color | |
2640 | ebnf-terminal-regexp | |
2641 | ebnf-case-fold-search | |
2642 | ebnf-terminal-font | |
2643 | ebnf-terminal-shape | |
2644 | ebnf-terminal-shadow | |
2645 | ebnf-terminal-border-width | |
2646 | ebnf-terminal-border-color | |
2647 | ebnf-non-terminal-font | |
2648 | ebnf-non-terminal-shape | |
2649 | ebnf-non-terminal-shadow | |
2650 | ebnf-non-terminal-border-width | |
2651 | ebnf-non-terminal-border-color | |
ac4780a1 | 2652 | ebnf-production-name-p |
984ae001 GM |
2653 | ebnf-sort-production |
2654 | ebnf-production-font | |
2655 | ebnf-arrow-shape | |
2656 | ebnf-chart-shape | |
2657 | ebnf-user-arrow | |
2658 | ebnf-horizontal-orientation | |
2659 | ebnf-horizontal-max-height | |
2660 | ebnf-production-horizontal-space | |
2661 | ebnf-production-vertical-space | |
2662 | ebnf-justify-sequence | |
2663 | ebnf-lex-comment-char | |
2664 | ebnf-lex-eop-char | |
2665 | ebnf-syntax | |
2666 | ebnf-iso-alternative-p | |
2667 | ebnf-iso-normalize-p | |
ac4780a1 | 2668 | ebnf-file-suffix-regexp |
984ae001 | 2669 | ebnf-eps-prefix |
3ced5caa VJL |
2670 | ebnf-eps-header-font |
2671 | ebnf-eps-header | |
2672 | ebnf-eps-footer-font | |
2673 | ebnf-eps-footer | |
984ae001 GM |
2674 | ebnf-entry-percentage |
2675 | ebnf-color-p | |
2676 | ebnf-line-width | |
2677 | ebnf-line-color | |
2678 | ebnf-debug-ps | |
2679 | ebnf-use-float-format | |
ac4780a1 | 2680 | ebnf-stop-on-error |
984ae001 GM |
2681 | ebnf-yac-ignore-error-recovery |
2682 | ebnf-ignore-empty-rule | |
2683 | ebnf-optimize) | |
2684 | "List of valid symbol custom variable.") | |
2685 | ||
2686 | ||
2687 | (defvar ebnf-style-database | |
2688 | '(;; EBNF default | |
2689 | (default | |
2690 | nil | |
ac4780a1 | 2691 | (ebnf-special-show-delimiter . t) |
984ae001 GM |
2692 | (ebnf-special-font . '(7 Courier "Black" "Gray95" bold italic)) |
2693 | (ebnf-special-shape . 'bevel) | |
2694 | (ebnf-special-shadow . nil) | |
2695 | (ebnf-special-border-width . 0.5) | |
2696 | (ebnf-special-border-color . "Black") | |
2697 | (ebnf-except-font . '(7 Courier "Black" "Gray90" bold italic)) | |
2698 | (ebnf-except-shape . 'bevel) | |
2699 | (ebnf-except-shadow . nil) | |
2700 | (ebnf-except-border-width . 0.25) | |
2701 | (ebnf-except-border-color . "Black") | |
2702 | (ebnf-repeat-font . '(7 Courier "Black" "Gray85" bold italic)) | |
2703 | (ebnf-repeat-shape . 'bevel) | |
2704 | (ebnf-repeat-shadow . nil) | |
2705 | (ebnf-repeat-border-width . 0.0) | |
2706 | (ebnf-repeat-border-color . "Black") | |
2707 | (ebnf-terminal-regexp . nil) | |
2708 | (ebnf-case-fold-search . nil) | |
2709 | (ebnf-terminal-font . '(7 Courier "Black" "White")) | |
2710 | (ebnf-terminal-shape . 'miter) | |
2711 | (ebnf-terminal-shadow . nil) | |
2712 | (ebnf-terminal-border-width . 1.0) | |
2713 | (ebnf-terminal-border-color . "Black") | |
2714 | (ebnf-non-terminal-font . '(7 Helvetica "Black" "White")) | |
2715 | (ebnf-non-terminal-shape . 'round) | |
2716 | (ebnf-non-terminal-shadow . nil) | |
2717 | (ebnf-non-terminal-border-width . 1.0) | |
2718 | (ebnf-non-terminal-border-color . "Black") | |
ac4780a1 | 2719 | (ebnf-production-name-p . t) |
984ae001 GM |
2720 | (ebnf-sort-production . nil) |
2721 | (ebnf-production-font . '(10 Helvetica "Black" "White" bold)) | |
2722 | (ebnf-arrow-shape . 'hollow) | |
2723 | (ebnf-chart-shape . 'round) | |
2724 | (ebnf-user-arrow . nil) | |
2725 | (ebnf-horizontal-orientation . nil) | |
2726 | (ebnf-horizontal-max-height . nil) | |
2727 | (ebnf-production-horizontal-space . 0.0) | |
2728 | (ebnf-production-vertical-space . 0.0) | |
2729 | (ebnf-justify-sequence . 'center) | |
2730 | (ebnf-lex-comment-char . ?\;) | |
2731 | (ebnf-lex-eop-char . ?.) | |
2732 | (ebnf-syntax . 'ebnf) | |
2733 | (ebnf-iso-alternative-p . nil) | |
2734 | (ebnf-iso-normalize-p . nil) | |
ac4780a1 | 2735 | (ebnf-file-suffix-regexp . "\.[Bb][Nn][Ff]$") |
984ae001 | 2736 | (ebnf-eps-prefix . "ebnf--") |
3ced5caa VJL |
2737 | (ebnf-eps-header-font . '(11 Helvetica "Black" "White" bold)) |
2738 | (ebnf-eps-header . nil) | |
2739 | (ebnf-eps-footer-font . '(7 Helvetica "Black" "White" bold)) | |
2740 | (ebnf-eps-footer . nil) | |
984ae001 GM |
2741 | (ebnf-entry-percentage . 0.5) |
2742 | (ebnf-color-p . (or (fboundp 'x-color-values) ; Emacs | |
2743 | (fboundp 'color-instance-rgb-components))) ; XEmacs | |
2744 | (ebnf-line-width . 1.0) | |
2745 | (ebnf-line-color . "Black") | |
2746 | (ebnf-debug-ps . nil) | |
2747 | (ebnf-use-float-format . t) | |
ac4780a1 | 2748 | (ebnf-stop-on-error . nil) |
984ae001 GM |
2749 | (ebnf-yac-ignore-error-recovery . nil) |
2750 | (ebnf-ignore-empty-rule . nil) | |
2751 | (ebnf-optimize . nil)) | |
2752 | ;; Happy EBNF default | |
2753 | (happy | |
2754 | default | |
2755 | (ebnf-justify-sequence . 'left) | |
2756 | (ebnf-lex-comment-char . ?\#) | |
2757 | (ebnf-lex-eop-char . ?\;)) | |
ac4780a1 VJL |
2758 | ;; ABNF default |
2759 | (abnf | |
2760 | default | |
2761 | (ebnf-syntax . 'abnf)) | |
984ae001 GM |
2762 | ;; ISO EBNF default |
2763 | (iso-ebnf | |
2764 | default | |
2765 | (ebnf-syntax . 'iso-ebnf)) | |
2766 | ;; Yacc/Bison default | |
2767 | (yacc | |
2768 | default | |
2769 | (ebnf-syntax . 'yacc)) | |
6ca94f87 VJL |
2770 | ;; ebnfx default |
2771 | (ebnfx | |
2772 | default | |
2773 | (ebnf-syntax . 'ebnfx)) | |
6411a60a VJL |
2774 | ;; dtd default |
2775 | (dtd | |
2776 | default | |
2777 | (ebnf-syntax . 'dtd)) | |
984ae001 GM |
2778 | ) |
2779 | "Style database. | |
2780 | ||
2781 | Each element has the following form: | |
2782 | ||
ac4780a1 | 2783 | (NAME INHERITS (VAR . VALUE)...) |
984ae001 | 2784 | |
ac4780a1 | 2785 | Where: |
984ae001 | 2786 | |
ac4780a1 VJL |
2787 | NAME is a symbol name style. |
2788 | ||
2789 | INHERITS is a symbol name style from which the current style inherits | |
815cbda2 | 2790 | the context. If INHERITS is nil, then there is no inheritance. |
ac4780a1 | 2791 | |
815cbda2 EZ |
2792 | This is a simple inheritance of style: if you declare that |
2793 | style A inherits from style B, all settings of B are applied | |
2794 | first, and then the settings of A are applied. This is useful | |
ac4780a1 | 2795 | when you wish to modify some aspects of an existing style, but |
815cbda2 | 2796 | at the same time wish to keep it unmodified. |
ac4780a1 VJL |
2797 | |
2798 | VAR is a valid ebnf2ps symbol custom variable. | |
815cbda2 | 2799 | See `ebnf-style-custom-list' for valid symbol variables. |
ac4780a1 | 2800 | |
815cbda2 EZ |
2801 | VALUE is a sexp which will be evaluated to set the value of VAR. |
2802 | Don't forget to quote symbols and constant lists. | |
ac4780a1 VJL |
2803 | See `default' style for an example. |
2804 | ||
815cbda2 | 2805 | Don't use this variable directly. Use functions `ebnf-insert-style', |
ac4780a1 | 2806 | `ebnf-delete-style' and `ebnf-merge-style'.") |
984ae001 GM |
2807 | |
2808 | \f | |
2809 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
2810 | ;; Style commands | |
2811 | ||
2812 | ||
3ced5caa VJL |
2813 | ;;;###autoload |
2814 | (defun ebnf-find-style (name) | |
2815 | "Return style definition if NAME is already defined; otherwise, return nil. | |
2816 | ||
2817 | See `ebnf-style-database' documentation." | |
2818 | (interactive "SStyle name: ") | |
2819 | (assoc name ebnf-style-database)) | |
2820 | ||
2821 | ||
984ae001 GM |
2822 | ;;;###autoload |
2823 | (defun ebnf-insert-style (name inherits &rest values) | |
ac4780a1 VJL |
2824 | "Insert a new style NAME with inheritance INHERITS and values VALUES. |
2825 | ||
2826 | See `ebnf-style-database' documentation." | |
2827 | (interactive "SStyle name: \nSStyle inherits from: \nXStyle values: ") | |
984ae001 GM |
2828 | (and (assoc name ebnf-style-database) |
2829 | (error "Style name already exists: %s" name)) | |
2830 | (or (assoc inherits ebnf-style-database) | |
0e816a43 | 2831 | (error "Style inheritance name doesn't exist: %s" inherits)) |
984ae001 GM |
2832 | (setq ebnf-style-database |
2833 | (cons (cons name (cons inherits (ebnf-check-style-values values))) | |
2834 | ebnf-style-database))) | |
2835 | ||
2836 | ||
ac4780a1 VJL |
2837 | ;;;###autoload |
2838 | (defun ebnf-delete-style (name) | |
2839 | "Delete style NAME. | |
2840 | ||
2841 | See `ebnf-style-database' documentation." | |
2842 | (interactive "SDelete style name: ") | |
2843 | (or (assoc name ebnf-style-database) | |
2844 | (error "Style name doesn't exist: %s" name)) | |
2845 | (let ((db ebnf-style-database)) | |
2846 | (while db | |
2847 | (and (eq (nth 1 (car db)) name) | |
2848 | (error "Style name `%s' is inherited by `%s' style" | |
2849 | name (nth 0 (car db)))) | |
2850 | (setq db (cdr db)))) | |
2851 | (setq ebnf-style-database (assq-delete-all name ebnf-style-database))) | |
2852 | ||
2853 | ||
984ae001 GM |
2854 | ;;;###autoload |
2855 | (defun ebnf-merge-style (name &rest values) | |
ac4780a1 VJL |
2856 | "Merge values of style NAME with style VALUES. |
2857 | ||
2858 | See `ebnf-style-database' documentation." | |
2859 | (interactive "SStyle name: \nXStyle values: ") | |
984ae001 | 2860 | (let ((style (or (assoc name ebnf-style-database) |
0e816a43 | 2861 | (error "Style name doesn't exist: %s" name))) |
984ae001 GM |
2862 | (merge (ebnf-check-style-values values)) |
2863 | val elt new check) | |
2864 | ;; modify value of existing variables | |
2865 | (setq val (nthcdr 2 style)) | |
2866 | (while merge | |
2867 | (setq check (car merge) | |
2868 | merge (cdr merge) | |
2869 | elt (assoc (car check) val)) | |
2870 | (if elt | |
2871 | (setcdr elt (cdr check)) | |
2872 | (setq new (cons check new)))) | |
2873 | ;; insert new variables | |
2874 | (nconc style (nreverse new)))) | |
2875 | ||
2876 | ||
2877 | ;;;###autoload | |
2878 | (defun ebnf-apply-style (style) | |
ac4780a1 | 2879 | "Set STYLE as the current style. |
984ae001 | 2880 | |
815cbda2 | 2881 | Returns the old style symbol. |
ac4780a1 VJL |
2882 | |
2883 | See `ebnf-style-database' documentation." | |
2884 | (interactive "SApply style: ") | |
984ae001 GM |
2885 | (prog1 |
2886 | ebnf-current-style | |
2887 | (and (ebnf-apply-style1 style) | |
2888 | (setq ebnf-current-style style)))) | |
2889 | ||
2890 | ||
2891 | ;;;###autoload | |
2892 | (defun ebnf-reset-style (&optional style) | |
2893 | "Reset current style. | |
2894 | ||
815cbda2 | 2895 | Returns the old style symbol. |
ac4780a1 VJL |
2896 | |
2897 | See `ebnf-style-database' documentation." | |
2898 | (interactive "SReset style: ") | |
984ae001 GM |
2899 | (setq ebnf-stack-style nil) |
2900 | (ebnf-apply-style (or style 'default))) | |
2901 | ||
2902 | ||
2903 | ;;;###autoload | |
2904 | (defun ebnf-push-style (&optional style) | |
815cbda2 EZ |
2905 | "Push the current style onto a stack and set STYLE as the current style. |
2906 | ||
2907 | Returns the old style symbol. | |
984ae001 | 2908 | |
815cbda2 | 2909 | See also `ebnf-pop-style'. |
ac4780a1 VJL |
2910 | |
2911 | See `ebnf-style-database' documentation." | |
2912 | (interactive "SPush style: ") | |
984ae001 GM |
2913 | (prog1 |
2914 | ebnf-current-style | |
2915 | (setq ebnf-stack-style (cons ebnf-current-style ebnf-stack-style)) | |
2916 | (and style | |
2917 | (ebnf-apply-style style)))) | |
2918 | ||
2919 | ||
2920 | ;;;###autoload | |
2921 | (defun ebnf-pop-style () | |
815cbda2 | 2922 | "Pop a style from the stack of pushed styles and set it as the current style. |
ac4780a1 | 2923 | |
815cbda2 EZ |
2924 | Returns the old style symbol. |
2925 | ||
2926 | See also `ebnf-push-style'. | |
984ae001 | 2927 | |
ac4780a1 | 2928 | See `ebnf-style-database' documentation." |
984ae001 GM |
2929 | (interactive) |
2930 | (prog1 | |
2931 | (ebnf-apply-style (car ebnf-stack-style)) | |
2932 | (setq ebnf-stack-style (cdr ebnf-stack-style)))) | |
2933 | ||
2934 | ||
2935 | (defun ebnf-apply-style1 (style) | |
2936 | (let ((value (cdr (assoc style ebnf-style-database)))) | |
2937 | (prog1 | |
2938 | value | |
2939 | (and (car value) (ebnf-apply-style1 (car value))) | |
2940 | (while (setq value (cdr value)) | |
2941 | (set (caar value) (eval (cdar value))))))) | |
2942 | ||
2943 | ||
2944 | (defun ebnf-check-style-values (values) | |
2945 | (let (style) | |
2946 | (while values | |
ac4780a1 | 2947 | (and (memq (caar values) ebnf-style-custom-list) |
984ae001 GM |
2948 | (setq style (cons (car values) style))) |
2949 | (setq values (cdr values))) | |
2950 | (nreverse style))) | |
2951 | ||
2952 | \f | |
2953 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
2954 | ;; Internal variables | |
2955 | ||
2956 | ||
3ced5caa VJL |
2957 | (defvar ebnf-eps-buffer-name " *EPS*") |
2958 | (defvar ebnf-parser-func nil) | |
2959 | (defvar ebnf-eps-executing nil) | |
2960 | (defvar ebnf-eps-header-comment nil) | |
2961 | (defvar ebnf-eps-footer-comment nil) | |
2962 | (defvar ebnf-eps-upper-x 0.0) | |
984ae001 | 2963 | (make-variable-buffer-local 'ebnf-eps-upper-x) |
3ced5caa | 2964 | (defvar ebnf-eps-upper-y 0.0) |
984ae001 | 2965 | (make-variable-buffer-local 'ebnf-eps-upper-y) |
3ced5caa | 2966 | (defvar ebnf-eps-prod-width 0.0) |
984ae001 | 2967 | (make-variable-buffer-local 'ebnf-eps-prod-width) |
3ced5caa | 2968 | (defvar ebnf-eps-max-height 0.0) |
984ae001 | 2969 | (make-variable-buffer-local 'ebnf-eps-max-height) |
3ced5caa | 2970 | (defvar ebnf-eps-max-width 0.0) |
984ae001 GM |
2971 | (make-variable-buffer-local 'ebnf-eps-max-width) |
2972 | ||
2973 | ||
2974 | (defvar ebnf-eps-context nil | |
2975 | "List of EPS file name during parsing. | |
2976 | ||
2977 | See section \"Actions in Comments\" in ebnf2ps documentation.") | |
2978 | ||
2979 | ||
3ced5caa VJL |
2980 | (defvar ebnf-eps-file-alist nil |
2981 | "Alist associating file name with EPS header and footer. | |
2982 | ||
2983 | Each element has the following form: | |
2984 | ||
2985 | (EPS-FILENAME HEADER FOOTER) | |
2986 | ||
2987 | EPS-FILENAME is the EPS file name. | |
2988 | HEADER is the header string or nil. | |
2989 | FOOTER is the footer string or nil. | |
2990 | ||
2991 | It's generated during parsing and used during EPS generation. | |
2992 | ||
2993 | See `ebnf-eps-context' and section \"Actions in Comments\" in ebnf2ps | |
2994 | documentation.") | |
2995 | ||
2996 | ||
984ae001 GM |
2997 | (defvar ebnf-eps-production-list nil |
2998 | "Alist associating production name with EPS file name list. | |
2999 | ||
3000 | Each element has the following form: | |
3001 | ||
3002 | (PRODUCTION EPS-FILENAME...) | |
3003 | ||
3004 | PRODUCTION is the production name. | |
3005 | EPS-FILENAME is the EPS file name. | |
3006 | ||
815cbda2 | 3007 | This is generated during parsing and used during EPS generation. |
984ae001 GM |
3008 | |
3009 | See `ebnf-eps-context' and section \"Actions in Comments\" in ebnf2ps | |
3010 | documentation.") | |
3011 | ||
3012 | ||
3013 | (defconst ebnf-arrow-shape-alist | |
ac4780a1 VJL |
3014 | '((none . 0) |
3015 | (semi-up . 1) | |
3016 | (semi-down . 2) | |
3017 | (simple . 3) | |
3018 | (transparent . 4) | |
3019 | (hollow . 5) | |
3020 | (full . 6) | |
3021 | (semi-up-hollow . 7) | |
3022 | (semi-up-full . 8) | |
3023 | (semi-down-hollow . 9) | |
3024 | (semi-down-full . 10) | |
3025 | (user . 11)) | |
984ae001 GM |
3026 | "Alist associating values for `ebnf-arrow-shape'. |
3027 | ||
3028 | See documentation for `ebnf-arrow-shape'.") | |
3029 | ||
3030 | ||
3031 | (defconst ebnf-terminal-shape-alist | |
3032 | '((miter . 0) | |
3033 | (round . 1) | |
3034 | (bevel . 2)) | |
3035 | "Alist associating values from `ebnf-terminal-shape' to a bit vector. | |
3036 | ||
3037 | See documentation for `ebnf-terminal-shape', `ebnf-non-terminal-shape' and | |
3038 | `ebnf-chart-shape'.") | |
3039 | ||
3040 | ||
3ced5caa VJL |
3041 | (defvar ebnf-limit nil) |
3042 | (defvar ebnf-action nil) | |
3043 | (defvar ebnf-action-list nil) | |
984ae001 GM |
3044 | |
3045 | ||
3ced5caa | 3046 | (defvar ebnf-default-p nil) |
984ae001 GM |
3047 | |
3048 | ||
3ced5caa VJL |
3049 | (defvar ebnf-font-height-P 0) |
3050 | (defvar ebnf-font-height-T 0) | |
3051 | (defvar ebnf-font-height-NT 0) | |
3052 | (defvar ebnf-font-height-S 0) | |
3053 | (defvar ebnf-font-height-E 0) | |
3054 | (defvar ebnf-font-height-R 0) | |
3055 | (defvar ebnf-font-width-P 0) | |
3056 | (defvar ebnf-font-width-T 0) | |
3057 | (defvar ebnf-font-width-NT 0) | |
3058 | (defvar ebnf-font-width-S 0) | |
3059 | (defvar ebnf-font-width-E 0) | |
3060 | (defvar ebnf-font-width-R 0) | |
3061 | (defvar ebnf-space-T 0) | |
3062 | (defvar ebnf-space-NT 0) | |
3063 | (defvar ebnf-space-S 0) | |
3064 | (defvar ebnf-space-E 0) | |
3065 | (defvar ebnf-space-R 0) | |
984ae001 GM |
3066 | |
3067 | ||
3ced5caa VJL |
3068 | (defvar ebnf-basic-width-extra 0) |
3069 | (defvar ebnf-basic-width 0) | |
3070 | (defvar ebnf-basic-height 0) | |
3071 | (defvar ebnf-basic-empty-height 0) | |
3072 | (defvar ebnf-vertical-space 0) | |
3073 | (defvar ebnf-horizontal-space 0) | |
984ae001 GM |
3074 | |
3075 | ||
3ced5caa VJL |
3076 | (defvar ebnf-settings nil) |
3077 | (defvar ebnf-fonts-required nil) | |
984ae001 GM |
3078 | |
3079 | ||
3080 | (defconst ebnf-debug | |
3081 | " | |
3082 | % === begin EBNF procedures to help debugging | |
3083 | ||
3084 | % Mark visually current point: string debug | |
3085 | /debug | |
3086 | {/-s- exch def | |
3087 | currentpoint | |
3088 | gsave -s- show grestore | |
3089 | gsave | |
3090 | 20 20 rlineto | |
3091 | 0 -40 rlineto | |
3092 | -40 40 rlineto | |
3093 | 0 -40 rlineto | |
3094 | 20 20 rlineto | |
3095 | stroke | |
3096 | grestore | |
3097 | moveto | |
3098 | }def | |
3099 | ||
3100 | % Show number value: number string debug-number | |
3101 | /debug-number | |
3102 | {gsave | |
3103 | 20 0 rmoveto show ([) show 60 string cvs show (]) show | |
3104 | grestore | |
3105 | }def | |
3106 | ||
3107 | % === end EBNF procedures to help debugging | |
3108 | ||
3109 | " | |
3110 | "This is intended to help debugging PostScript programming.") | |
3111 | ||
3112 | ||
3113 | (defconst ebnf-prologue | |
3114 | " | |
3115 | % === begin EBNF engine | |
3116 | ||
3117 | % --- Basic Definitions | |
3118 | ||
3119 | /fS F | |
3120 | /SpaceS FontHeight 0.5 mul def | |
3121 | /HeightS FontHeight FontHeight add def | |
3122 | ||
3123 | /fE F | |
3124 | /SpaceE FontHeight 0.5 mul def | |
3125 | /HeightE FontHeight FontHeight add def | |
3126 | ||
3127 | /fR F | |
3128 | /SpaceR FontHeight 0.5 mul def | |
3129 | /HeightR FontHeight FontHeight add def | |
3130 | ||
3131 | /fT F | |
3132 | /SpaceT FontHeight 0.5 mul def | |
3133 | /HeightT FontHeight FontHeight add def | |
3134 | ||
3135 | /fNT F | |
3136 | /SpaceNT FontHeight 0.5 mul def | |
3137 | /HeightNT FontHeight FontHeight add def | |
3138 | ||
3139 | /T HeightT HeightNT add 0.5 mul def | |
ed0aa46c VJL |
3140 | /hT T 0.5 mul def |
3141 | /hT2 hT 0.5 mul ArrowScale mul def | |
3142 | /hT4 hT 0.25 mul ArrowScale mul def | |
984ae001 GM |
3143 | |
3144 | /Er 0.1 def % Error factor | |
3145 | ||
3146 | ||
3147 | /c{currentpoint}bind def | |
3148 | /xyi{/xi c /yi exch def def}bind def | |
3149 | /xyo{/xo c /yo exch def def}bind def | |
3150 | /xyp{/xp c /yp exch def def}bind def | |
3151 | /xyt{/xt c /yt exch def def}bind def | |
3152 | ||
3153 | % vertical movement: x y height vm | |
3154 | /vm{add moveto}bind def | |
3155 | ||
3156 | % horizontal movement: x y width hm | |
3157 | /hm{3 -1 roll exch add exch moveto}bind def | |
3158 | ||
3159 | % set color: [R G B] SetRGB | |
3160 | /SetRGB{aload pop setrgbcolor}bind def | |
3161 | ||
3162 | % filling gray area: gray-scale FillGray | |
3163 | /FillGray{gsave setgray fill grestore}bind def | |
3164 | ||
3165 | % filling color area: [R G B] FillRGB | |
3166 | /FillRGB{gsave SetRGB fill grestore}bind def | |
3167 | ||
3168 | /Stroke{LineWidth setlinewidth LineColor SetRGB stroke}bind def | |
3169 | /StrokeShape{borderwidth setlinewidth bordercolor SetRGB stroke}bind def | |
3170 | /Gstroke{gsave Stroke grestore}bind def | |
3171 | ||
3172 | % Empty Line: width EL | |
3173 | /EL{0 rlineto Gstroke}bind def | |
3174 | ||
3175 | % --- Arrows | |
3176 | ||
3177 | /Down{hT2 neg hT4 neg rlineto}bind def | |
3178 | ||
3179 | /Arrow | |
3180 | {hT2 neg hT4 rmoveto | |
3181 | hT2 hT4 neg rlineto | |
3182 | Down | |
3183 | }bind def | |
3184 | ||
3185 | /ArrowPath{c newpath moveto Arrow closepath}bind def | |
3186 | ||
ac4780a1 VJL |
3187 | /UpPath |
3188 | {c newpath moveto | |
3189 | hT2 neg 0 rmoveto | |
3190 | 0 hT4 rlineto | |
3191 | hT2 hT4 neg rlineto | |
3192 | closepath | |
3193 | }bind def | |
3194 | ||
3195 | /DownPath | |
3196 | {c newpath moveto | |
3197 | hT2 neg 0 rmoveto | |
3198 | 0 hT4 neg rlineto | |
3199 | hT2 hT4 rlineto | |
3200 | closepath | |
3201 | }bind def | |
3202 | ||
984ae001 GM |
3203 | %>Right Arrow: RA |
3204 | % \\ | |
3205 | % *---+ | |
3206 | % / | |
3207 | /RA-vector | |
ac4780a1 VJL |
3208 | [{} % 0 - none |
3209 | {hT2 neg hT4 rlineto} % 1 - semi-up | |
3210 | {Down} % 2 - semi-down | |
3211 | {Arrow} % 3 - simple | |
3212 | {Gstroke ArrowPath} % 4 - transparent | |
3213 | {Gstroke ArrowPath 1 FillGray} % 5 - hollow | |
3214 | {Gstroke ArrowPath LineColor FillRGB} % 6 - full | |
3215 | {Gstroke UpPath 1 FillGray} % 7 - semi-up-hollow | |
3216 | {Gstroke UpPath LineColor FillRGB} % 8 - semi-up-full | |
3217 | {Gstroke DownPath 1 FillGray} % 9 - semi-down-hollow | |
3218 | {Gstroke DownPath LineColor FillRGB} % 10 - semi-down-full | |
3219 | {Gstroke gsave UserArrow grestore} % 11 - user | |
984ae001 GM |
3220 | ]def |
3221 | ||
3222 | /RA | |
3223 | {hT 0 rlineto | |
3224 | c | |
3225 | RA-vector ArrowShape get exec | |
3226 | Gstroke | |
3227 | moveto | |
ed0aa46c | 3228 | ExtraWidth 0 rmoveto |
984ae001 GM |
3229 | }def |
3230 | ||
3231 | % rotation DrawArrow | |
3232 | /DrawArrow | |
3233 | {gsave | |
3234 | 0 0 translate | |
3235 | rotate | |
3236 | RA | |
3237 | c | |
3238 | grestore | |
3239 | rmoveto | |
3240 | }def | |
3241 | ||
3242 | %>Left Arrow: LA | |
3243 | % / | |
3244 | % +---* | |
3245 | % \\ | |
3246 | /LA{180 DrawArrow}def | |
3247 | ||
3248 | %>Up Arrow: UA | |
3249 | % + | |
3250 | % /|\\ | |
3251 | % | | |
3252 | % * | |
3253 | /UA{90 DrawArrow}def | |
3254 | ||
3255 | %>Down Arrow: DA | |
3256 | % * | |
3257 | % | | |
3258 | % \\|/ | |
3259 | % + | |
3260 | /DA{270 DrawArrow}def | |
3261 | ||
3262 | % --- Corners | |
3263 | ||
3264 | %>corner Right Descendent: height arrow corner_RD | |
3265 | % _ | arrow | |
3266 | % / height > 0 | 0 - none | |
3267 | % | | 1 - right | |
3268 | % * ---------- | 2 - left | |
3269 | % | | 3 - vertical | |
3270 | % \\ height < 0 | | |
3271 | % - | | |
3272 | /cRD0-vector | |
3273 | [% 0 - none | |
3274 | {0 h rlineto | |
3275 | hT 0 rlineto} | |
3276 | % 1 - right | |
3277 | {0 h rlineto | |
3278 | RA} | |
3279 | % 2 - left | |
3280 | {hT 0 rmoveto xyi | |
3281 | LA | |
3282 | 0 h neg rlineto | |
3283 | xi yi moveto} | |
3284 | % 3 - vertical | |
3285 | {hT h rmoveto xyi | |
3286 | hT neg 0 rlineto | |
3287 | h 0 gt{DA}{UA}ifelse | |
3288 | xi yi moveto} | |
3289 | ]def | |
3290 | ||
3291 | /cRD-vector | |
3292 | [{cRD0-vector arrow get exec} % 0 - miter | |
3293 | {0 0 0 h hT h rcurveto} % 1 - rounded | |
3294 | {hT h rlineto} % 2 - bevel | |
3295 | ]def | |
3296 | ||
3297 | /corner_RD | |
3298 | {/arrow exch def /h exch def | |
3299 | cRD-vector ChartShape get exec | |
3300 | Gstroke | |
3301 | }def | |
3302 | ||
3303 | %>corner Right Ascendent: height arrow corner_RA | |
3304 | % | arrow | |
3305 | % | height > 0 | 0 - none | |
3306 | % / | 1 - right | |
3307 | % *- ---------- | 2 - left | |
3308 | % \\ | 3 - vertical | |
3309 | % | height < 0 | | |
3310 | % | | |
3311 | /cRA0-vector | |
3312 | [% 0 - none | |
3313 | {hT 0 rlineto | |
3314 | 0 h rlineto} | |
3315 | % 1 - right | |
3316 | {RA | |
3317 | 0 h rlineto} | |
3318 | % 2 - left | |
3319 | {hT h rmoveto xyi | |
3320 | 0 h neg rlineto | |
3321 | LA | |
3322 | xi yi moveto} | |
3323 | % 3 - vertical | |
3324 | {hT h rmoveto xyi | |
3325 | h 0 gt{DA}{UA}ifelse | |
3326 | hT neg 0 rlineto | |
3327 | xi yi moveto} | |
3328 | ]def | |
3329 | ||
3330 | /cRA-vector | |
3331 | [{cRA0-vector arrow get exec} % 0 - miter | |
3332 | {0 0 hT 0 hT h rcurveto} % 1 - rounded | |
3333 | {hT h rlineto} % 2 - bevel | |
3334 | ]def | |
3335 | ||
3336 | /corner_RA | |
3337 | {/arrow exch def /h exch def | |
3338 | cRA-vector ChartShape get exec | |
3339 | Gstroke | |
3340 | }def | |
3341 | ||
3342 | %>corner Left Descendent: height arrow corner_LD | |
3343 | % _ | arrow | |
3344 | % \\ height > 0 | 0 - none | |
3345 | % | | 1 - right | |
3346 | % * ---------- | 2 - left | |
3347 | % | | 3 - vertical | |
3348 | % / height < 0 | | |
3349 | % - | | |
3350 | /cLD0-vector | |
3351 | [% 0 - none | |
3352 | {0 h rlineto | |
3353 | hT neg 0 rlineto} | |
3354 | % 1 - right | |
3355 | {hT neg h rmoveto xyi | |
3356 | RA | |
3357 | 0 h neg rlineto | |
3358 | xi yi moveto} | |
3359 | % 2 - left | |
3360 | {0 h rlineto | |
3361 | LA} | |
3362 | % 3 - vertical | |
3363 | {hT neg h rmoveto xyi | |
3364 | hT 0 rlineto | |
3365 | h 0 gt{DA}{UA}ifelse | |
3366 | xi yi moveto} | |
3367 | ]def | |
3368 | ||
3369 | /cLD-vector | |
3370 | [{cLD0-vector arrow get exec} % 0 - miter | |
3371 | {0 0 0 h hT neg h rcurveto} % 1 - rounded | |
3372 | {hT neg h rlineto} % 2 - bevel | |
3373 | ]def | |
3374 | ||
3375 | /corner_LD | |
3376 | {/arrow exch def /h exch def | |
3377 | cLD-vector ChartShape get exec | |
3378 | Gstroke | |
3379 | }def | |
3380 | ||
3381 | %>corner Left Ascendent: height arrow corner_LA | |
3382 | % | arrow | |
3383 | % | height > 0 | 0 - none | |
3384 | % \\ | 1 - right | |
3385 | % -* ---------- | 2 - left | |
3386 | % / | 3 - vertical | |
3387 | % | height < 0 | | |
3388 | % | | |
3389 | /cLA0-vector | |
3390 | [% 0 - none | |
3391 | {hT neg 0 rlineto | |
3392 | 0 h rlineto} | |
3393 | % 1 - right | |
3394 | {hT neg h rmoveto xyi | |
3395 | 0 h neg rlineto | |
3396 | RA | |
3397 | xi yi moveto} | |
3398 | % 2 - left | |
3399 | {LA | |
3400 | 0 h rlineto} | |
3401 | % 3 - vertical | |
3402 | {hT neg h rmoveto xyi | |
3403 | h 0 gt{DA}{UA}ifelse | |
3404 | hT 0 rlineto | |
3405 | xi yi moveto} | |
3406 | ]def | |
3407 | ||
3408 | /cLA-vector | |
3409 | [{cLA0-vector arrow get exec} % 0 - miter | |
3410 | {0 0 hT neg 0 hT neg h rcurveto} % 1 - rounded | |
3411 | {hT neg h rlineto} % 2 - bevel | |
3412 | ]def | |
3413 | ||
3414 | /corner_LA | |
3415 | {/arrow exch def /h exch def | |
3416 | cLA-vector ChartShape get exec | |
3417 | Gstroke | |
3418 | }def | |
3419 | ||
3420 | % --- Flow Stuff | |
3421 | ||
3ced5caa VJL |
3422 | % height prepare-height |- line_height corner_height corner_height |
3423 | /prepare-height | |
984ae001 GM |
3424 | {dup 0 gt |
3425 | {T sub hT} | |
3426 | {T add hT neg}ifelse | |
3427 | dup | |
3428 | }def | |
3429 | ||
3430 | %>Left Alternative: height LAlt | |
3431 | % _ | |
3432 | % / | |
3433 | % | height > 0 | |
3434 | % | | |
3435 | % / | |
3436 | % *- ---------- | |
3437 | % \\ | |
3438 | % | | |
3439 | % | height < 0 | |
3440 | % \\ | |
3441 | % - | |
3442 | /LAlt | |
3443 | {dup 0 eq | |
3444 | {T exch rlineto} | |
3445 | {dup abs T lt | |
3446 | {0.5 mul dup | |
3447 | 1 corner_RA | |
3448 | 0 corner_RD} | |
3ced5caa | 3449 | {prepare-height |
984ae001 GM |
3450 | 1 corner_RA |
3451 | exch 0 exch rlineto | |
3452 | 0 corner_RD | |
3453 | }ifelse | |
3454 | }ifelse | |
3455 | }def | |
3456 | ||
3457 | %>Left Loop: height LLoop | |
3458 | % _ | |
3459 | % / | |
3460 | % | height > 0 | |
3461 | % | | |
3462 | % \\ | |
3463 | % -* ---------- | |
3464 | % / | |
3465 | % | | |
3466 | % | height < 0 | |
3467 | % \\ | |
3468 | % - | |
3469 | /LLoop | |
3ced5caa | 3470 | {prepare-height |
984ae001 GM |
3471 | 3 corner_LA |
3472 | exch 0 exch rlineto | |
3473 | 0 corner_RD | |
3474 | }def | |
3475 | ||
3476 | %>Right Alternative: height RAlt | |
3477 | % _ | |
3478 | % \\ | |
3479 | % | height > 0 | |
3480 | % | | |
3481 | % \\ | |
3482 | % -* ---------- | |
3483 | % / | |
3484 | % | | |
3485 | % | height < 0 | |
3486 | % / | |
3487 | % - | |
3488 | /RAlt | |
3489 | {dup 0 eq | |
3490 | {T neg exch rlineto} | |
3491 | {dup abs T lt | |
3492 | {0.5 mul dup | |
3493 | 1 corner_LA | |
3494 | 0 corner_LD} | |
3ced5caa | 3495 | {prepare-height |
984ae001 GM |
3496 | 1 corner_LA |
3497 | exch 0 exch rlineto | |
3498 | 0 corner_LD | |
3499 | }ifelse | |
3500 | }ifelse | |
3501 | }def | |
3502 | ||
3503 | %>Right Loop: height RLoop | |
3504 | % _ | |
3505 | % \\ | |
3506 | % | height > 0 | |
3507 | % | | |
3508 | % / | |
3509 | % *- ---------- | |
3510 | % \\ | |
3511 | % | | |
3512 | % | height < 0 | |
3513 | % / | |
3514 | % - | |
3515 | /RLoop | |
3ced5caa | 3516 | {prepare-height |
984ae001 GM |
3517 | 1 corner_RA |
3518 | exch 0 exch rlineto | |
3519 | 0 corner_LD | |
3520 | }def | |
3521 | ||
3522 | % --- Terminal, Non-terminal and Special Basics | |
3523 | ||
3524 | % string width prepare-width |- string | |
3525 | /prepare-width | |
3526 | {/width exch def | |
ed0aa46c | 3527 | dup stringwidth pop space add space add width exch sub ExtraWidth sub 0.5 mul |
984ae001 GM |
3528 | /w exch def |
3529 | }def | |
3530 | ||
3531 | % string width begin-right | |
3532 | /begin-right | |
3533 | {xyo | |
3534 | prepare-width | |
3535 | w hT sub EL | |
3536 | RA | |
3537 | }def | |
3538 | ||
3539 | % end-right | |
3540 | /end-right | |
3541 | {xo width add Er add yo moveto | |
3542 | w Er add neg EL | |
3543 | xo yo moveto | |
3544 | }def | |
3545 | ||
3546 | % string width begin-left | |
3547 | /begin-left | |
3548 | {xyo | |
3549 | prepare-width | |
3550 | w EL | |
3551 | }def | |
3552 | ||
3553 | % end-left | |
3554 | /end-left | |
3555 | {xo width add Er add yo moveto | |
3556 | hT w sub Er add EL | |
3557 | LA | |
3558 | xo yo moveto | |
3559 | }def | |
3560 | ||
3561 | /ShapePath-vector | |
3562 | [% 0 - miter | |
3563 | {xx yy moveto | |
3564 | xx YY lineto | |
3565 | XX YY lineto | |
3566 | XX yy lineto} | |
3567 | % 1 - rounded | |
3568 | {/half YY yy sub 0.5 mul abs def | |
3569 | xx half add YY moveto | |
3570 | 0 0 half neg 0 half neg half neg rcurveto | |
3571 | 0 0 0 half neg half half neg rcurveto | |
3572 | XX xx sub abs half sub half sub 0 rlineto | |
3573 | 0 0 half 0 half half rcurveto | |
3574 | 0 0 0 half half neg half rcurveto} | |
3575 | % 2 - bevel | |
3576 | {/quarter YY yy sub 0.25 mul abs def | |
3577 | xx quarter add YY moveto | |
3578 | quarter neg quarter neg rlineto | |
3579 | 0 quarter quarter add neg rlineto | |
3580 | quarter quarter neg rlineto | |
3581 | XX xx sub abs quarter sub quarter sub 0 rlineto | |
3582 | quarter quarter rlineto | |
3583 | 0 quarter quarter add rlineto | |
3584 | quarter neg quarter rlineto} | |
3585 | ]def | |
3586 | ||
3587 | /doShapePath | |
3588 | {newpath | |
3589 | ShapePath-vector shape get exec | |
3590 | closepath | |
3591 | }def | |
3592 | ||
3593 | /doShapeShadow | |
3594 | {gsave | |
3595 | Xshadow Xshadow add Xshadow add | |
3596 | Yshadow Yshadow add Yshadow add translate | |
3597 | doShapePath | |
3598 | 0.9 FillGray | |
3599 | grestore | |
3600 | }def | |
3601 | ||
3602 | /doShape | |
3603 | {gsave | |
3604 | doShapePath | |
3605 | shapecolor FillRGB | |
3606 | StrokeShape | |
3607 | grestore | |
3608 | }def | |
3609 | ||
3610 | % string SBound |- string | |
3611 | /SBound | |
3612 | {/xx c dup /yy exch def | |
3613 | FontHeight add /YY exch def def | |
3614 | dup stringwidth pop xx add /XX exch def | |
3615 | Effect 8 and 0 ne | |
3616 | {/yy yy YShadow add def | |
3617 | /XX XX XShadow add def | |
3618 | }if | |
3619 | }def | |
3620 | ||
3621 | % string SBox | |
3622 | /SBox | |
3623 | {gsave | |
3624 | c space sub moveto | |
3625 | SBound | |
3626 | /XX XX space add space add def | |
3627 | /YY YY space add def | |
3628 | /yy yy space sub def | |
3629 | shadow{doShapeShadow}if | |
3630 | doShape | |
3631 | space Descent abs rmoveto | |
3632 | foreground SetRGB S | |
3633 | grestore | |
3634 | }def | |
3635 | ||
3636 | % --- Terminal | |
3637 | ||
3638 | % TeRminal: string TR | |
3639 | /TR | |
3640 | {/Effect EffectT def | |
3641 | /shape ShapeT def | |
3642 | /shapecolor BackgroundT def | |
3643 | /borderwidth BorderWidthT def | |
3644 | /bordercolor BorderColorT def | |
3645 | /foreground ForegroundT def | |
3646 | /shadow ShadowT def | |
3647 | SBox | |
3648 | }def | |
3649 | ||
3650 | %>Right Terminal: string width RT |- x y | |
3651 | /RT | |
3652 | {xyt | |
3653 | /fT F | |
3654 | /space SpaceT def | |
3655 | begin-right | |
3656 | TR | |
3657 | end-right | |
3658 | xt yt | |
3659 | }def | |
3660 | ||
3661 | %>Left Terminal: string width LT |- x y | |
3662 | /LT | |
3663 | {xyt | |
3664 | /fT F | |
3665 | /space SpaceT def | |
3666 | begin-left | |
3667 | TR | |
3668 | end-left | |
3669 | xt yt | |
3670 | }def | |
3671 | ||
3672 | %>Right Terminal Default: string width RTD |- x y | |
3673 | /RTD | |
3674 | {/-save- BorderWidthT def | |
3675 | /BorderWidthT BorderWidthT DefaultWidth add def | |
3676 | RT | |
3677 | /BorderWidthT -save- def | |
3678 | }def | |
3679 | ||
3680 | %>Left Terminal Default: string width LTD |- x y | |
3681 | /LTD | |
3682 | {/-save- BorderWidthT def | |
3683 | /BorderWidthT BorderWidthT DefaultWidth add def | |
3684 | LT | |
3685 | /BorderWidthT -save- def | |
3686 | }def | |
3687 | ||
3688 | % --- Non-Terminal | |
3689 | ||
3690 | % Non-Terminal: string NT | |
3691 | /NT | |
3692 | {/Effect EffectNT def | |
3693 | /shape ShapeNT def | |
3694 | /shapecolor BackgroundNT def | |
3695 | /borderwidth BorderWidthNT def | |
3696 | /bordercolor BorderColorNT def | |
3697 | /foreground ForegroundNT def | |
3698 | /shadow ShadowNT def | |
3699 | SBox | |
3700 | }def | |
3701 | ||
3702 | %>Right Non-Terminal: string width RNT |- x y | |
3703 | /RNT | |
3704 | {xyt | |
3705 | /fNT F | |
3706 | /space SpaceNT def | |
3707 | begin-right | |
3708 | NT | |
3709 | end-right | |
3710 | xt yt | |
3711 | }def | |
3712 | ||
3713 | %>Left Non-Terminal: string width LNT |- x y | |
3714 | /LNT | |
3715 | {xyt | |
3716 | /fNT F | |
3717 | /space SpaceNT def | |
3718 | begin-left | |
3719 | NT | |
3720 | end-left | |
3721 | xt yt | |
3722 | }def | |
3723 | ||
3724 | %>Right Non-Terminal Default: string width RNTD |- x y | |
3725 | /RNTD | |
3726 | {/-save- BorderWidthNT def | |
3727 | /BorderWidthNT BorderWidthNT DefaultWidth add def | |
3728 | RNT | |
3729 | /BorderWidthNT -save- def | |
3730 | }def | |
3731 | ||
3732 | %>Left Non-Terminal Default: string width LNTD |- x y | |
3733 | /LNTD | |
3734 | {/-save- BorderWidthNT def | |
3735 | /BorderWidthNT BorderWidthNT DefaultWidth add def | |
3736 | LNT | |
3737 | /BorderWidthNT -save- def | |
3738 | }def | |
3739 | ||
3740 | % --- Special | |
3741 | ||
3742 | % SPecial: string SP | |
3743 | /SP | |
3744 | {/Effect EffectS def | |
3745 | /shape ShapeS def | |
3746 | /shapecolor BackgroundS def | |
3747 | /borderwidth BorderWidthS def | |
3748 | /bordercolor BorderColorS def | |
3749 | /foreground ForegroundS def | |
3750 | /shadow ShadowS def | |
3751 | SBox | |
3752 | }def | |
3753 | ||
3754 | %>Right SPecial: string width RSP |- x y | |
3755 | /RSP | |
3756 | {xyt | |
3757 | /fS F | |
3758 | /space SpaceS def | |
3759 | begin-right | |
3760 | SP | |
3761 | end-right | |
3762 | xt yt | |
3763 | }def | |
3764 | ||
3765 | %>Left SPecial: string width LSP |- x y | |
3766 | /LSP | |
3767 | {xyt | |
3768 | /fS F | |
3769 | /space SpaceS def | |
3770 | begin-left | |
3771 | SP | |
3772 | end-left | |
3773 | xt yt | |
3774 | }def | |
3775 | ||
3776 | %>Right SPecial Default: string width RSPD |- x y | |
3777 | /RSPD | |
3778 | {/-save- BorderWidthS def | |
3779 | /BorderWidthS BorderWidthS DefaultWidth add def | |
3780 | RSP | |
3781 | /BorderWidthS -save- def | |
3782 | }def | |
3783 | ||
3784 | %>Left SPecial Default: string width LSPD |- x y | |
3785 | /LSPD | |
3786 | {/-save- BorderWidthS def | |
3787 | /BorderWidthS BorderWidthS DefaultWidth add def | |
3788 | LSP | |
3789 | /BorderWidthS -save- def | |
3790 | }def | |
3791 | ||
3792 | % --- Repeat and Except basics | |
3793 | ||
3794 | /begin-direction | |
3795 | {/w width rwidth sub 0.5 mul def | |
3796 | width 0 rmoveto}def | |
3797 | ||
3798 | /end-direction | |
3799 | {gsave | |
3800 | /xx c entry add /YY exch def def | |
3801 | /yy YY height sub def | |
3802 | /XX xx rwidth add def | |
3803 | shadow{doShapeShadow}if | |
3804 | doShape | |
3805 | grestore | |
3806 | }def | |
3807 | ||
3808 | /right-direction | |
3809 | {begin-direction | |
3810 | w neg EL | |
3811 | xt yt moveto | |
3812 | w hT sub EL RA | |
3813 | end-direction | |
3814 | }def | |
3815 | ||
3816 | /left-direction | |
3817 | {begin-direction | |
3818 | hT w sub EL LA | |
3819 | xt yt moveto | |
3820 | w EL | |
3821 | end-direction | |
3822 | }def | |
3823 | ||
3824 | % --- Repeat | |
3825 | ||
3826 | % entry height width rwidth begin-repeat | |
3827 | /begin-repeat | |
3828 | {/rwidth exch def | |
3829 | /width exch def | |
3830 | /height exch def | |
3831 | /entry exch def | |
3832 | /fR F | |
3833 | /space SpaceR def | |
3834 | /Effect EffectR def | |
3835 | /shape ShapeR def | |
3836 | /shapecolor BackgroundR def | |
3837 | /borderwidth BorderWidthR def | |
3838 | /bordercolor BorderColorR def | |
3839 | /foreground ForegroundR def | |
3840 | /shadow ShadowR def | |
3841 | xyt | |
3842 | }def | |
3843 | ||
3844 | % string end-repeat |- x y | |
3845 | /end-repeat | |
3846 | {gsave | |
3847 | space Descent rmoveto | |
3848 | foreground SetRGB S | |
3849 | c Descent sub | |
3850 | grestore | |
3851 | exch space add exch moveto | |
3852 | xt yt | |
3853 | }def | |
3854 | ||
3855 | %>Right RePeat: string entry height width rwidth RRP |- x y | |
3856 | /RRP{begin-repeat right-direction end-repeat}def | |
3857 | ||
3858 | %>Left RePeat: string entry height width rwidth LRP |- x y | |
3859 | /LRP{begin-repeat left-direction end-repeat}def | |
3860 | ||
3861 | % --- Except | |
3862 | ||
3863 | % entry height width rwidth begin-except | |
3864 | /begin-except | |
3865 | {/rwidth exch def | |
3866 | /width exch def | |
3867 | /height exch def | |
3868 | /entry exch def | |
3869 | /fE F | |
3870 | /space SpaceE def | |
3871 | /Effect EffectE def | |
3872 | /shape ShapeE def | |
3873 | /shapecolor BackgroundE def | |
3874 | /borderwidth BorderWidthE def | |
3875 | /bordercolor BorderColorE def | |
3876 | /foreground ForegroundE def | |
3877 | /shadow ShadowE def | |
3878 | xyt | |
3879 | }def | |
3880 | ||
3881 | % x-width end-except |- x y | |
3882 | /end-except | |
3883 | {gsave | |
3884 | space space add add Descent rmoveto | |
3885 | (-) foreground SetRGB S | |
3886 | grestore | |
3887 | space 0 rmoveto | |
3888 | xt yt | |
3889 | }def | |
3890 | ||
3891 | %>Right EXcept: x-width entry height width rwidth REX |- x y | |
3892 | /REX{begin-except right-direction end-except}def | |
3893 | ||
3894 | %>Left EXcept: x-width entry height width rwidth LEX |- x y | |
3895 | /LEX{begin-except left-direction end-except}def | |
3896 | ||
3897 | % --- Sequence | |
3898 | ||
3899 | %>Beginning Of Sequence: BOS |- x y | |
3900 | /BOS{currentpoint}bind def | |
3901 | ||
3902 | %>End Of Sequence: x y x1 y1 EOS |- x y | |
3903 | /EOS{pop pop}bind def | |
3904 | ||
3905 | % --- Production | |
3906 | ||
3907 | %>Beginning Of Production: string width height BOP |- y x | |
3908 | /BOP | |
3909 | {xyp | |
3910 | neg yp add /yw exch def | |
3911 | xp add T sub /xw exch def | |
ac4780a1 VJL |
3912 | dup length 0 gt % empty string ==> no production name |
3913 | {/Effect EffectP def | |
3914 | /fP F ForegroundP SetRGB BackgroundP aload pop true BG S | |
3915 | /Effect 0 def | |
3916 | ( :) S false BG}if | |
984ae001 GM |
3917 | xw yw moveto |
3918 | hT EL RA | |
3919 | xp yw moveto | |
3920 | T EL | |
3921 | yp xp | |
3922 | }def | |
3923 | ||
3924 | %>End Of Production: y x delta EOP | |
3925 | /EOPH{add exch moveto}bind def % horizontal | |
3926 | /EOPV{exch pop sub 0 exch moveto}bind def % vertical | |
3927 | ||
3928 | % --- Empty Alternative | |
3929 | ||
3930 | %>Empty Alternative: width EA |- x y | |
3931 | /EA | |
3932 | {gsave | |
3933 | Er add 0 rlineto | |
3934 | Stroke | |
3935 | grestore | |
3936 | c | |
3937 | }def | |
3938 | ||
3939 | % --- Alternative | |
3940 | ||
3941 | %>AlTernative: h1 h2 ... hn n width AT |- x y | |
3942 | /AT | |
3943 | {xyo xo add /xw exch def | |
3944 | xw yo moveto | |
3945 | Er EL | |
3946 | {xw yo moveto | |
3947 | dup RAlt | |
3948 | xo yo moveto | |
3949 | LAlt}repeat | |
3950 | xo yo | |
3951 | }def | |
3952 | ||
3953 | % --- Optional | |
3954 | ||
3955 | %>OPtional: height width OP |- x y | |
3956 | /OP | |
3957 | {xyo | |
3958 | T sub /ow exch def | |
3959 | ow Er sub 0 rmoveto | |
3960 | T Er add EL | |
3961 | neg dup RAlt | |
3962 | ow T sub neg EL | |
3963 | xo yo moveto | |
3964 | LAlt | |
3965 | xo yo moveto | |
3966 | T EL | |
3967 | xo yo | |
3968 | }def | |
3969 | ||
3970 | % --- List Flow | |
3971 | ||
3972 | %>One or More: height width OM |- x y | |
3973 | /OM | |
3974 | {xyo | |
3975 | /ow exch def | |
3976 | ow Er add 0 rmoveto | |
3977 | T Er add neg EL | |
3978 | dup RLoop | |
3979 | xo T add yo moveto | |
3980 | LLoop | |
3981 | xo yo moveto | |
3982 | T EL | |
3983 | xo yo | |
3984 | }def | |
3985 | ||
3986 | %>Zero or More: h2 h1 width ZM |- x y | |
3987 | /ZM | |
3988 | {xyo | |
3989 | Er add EL | |
3990 | Er neg 0 rmoveto | |
3991 | dup RAlt | |
3992 | exch dup RLoop | |
3993 | xo yo moveto | |
3994 | exch dup LAlt | |
3995 | exch LLoop | |
3996 | yo add xo T add exch moveto | |
3997 | xo yo | |
3998 | }def | |
3999 | ||
4000 | % === end EBNF engine | |
4001 | ||
4002 | " | |
4003 | "EBNF PostScript prologue") | |
4004 | ||
4005 | ||
4006 | (defconst ebnf-eps-prologue | |
4007 | " | |
4008 | /#ebnf2ps#dict 230 dict def | |
4009 | #ebnf2ps#dict begin | |
4010 | ||
4011 | % Initiliaze variables to avoid name-conflicting with document variables. | |
4012 | % This is the case when using `bind' operator. | |
4013 | /-fillp- 0 def /h 0 def | |
4014 | /-ox- 0 def /half 0 def | |
4015 | /-oy- 0 def /height 0 def | |
4016 | /-save- 0 def /ow 0 def | |
4017 | /Ascent 0 def /quarter 0 def | |
4018 | /Descent 0 def /rXX 0 def | |
4019 | /Effect 0 def /rYY 0 def | |
4020 | /FontHeight 0 def /rwidth 0 def | |
4021 | /LineThickness 0 def /rxx 0 def | |
4022 | /OverlinePosition 0 def /ryy 0 def | |
4023 | /SpaceBackground 0 def /shadow 0 def | |
4024 | /StrikeoutPosition 0 def /shape 0 def | |
4025 | /UnderlinePosition 0 def /shapecolor 0 def | |
4026 | /XBox 0 def /space 0 def | |
4027 | /XX 0 def /st 1 string def | |
4028 | /Xshadow 0 def /w 0 def | |
4029 | /YBox 0 def /width 0 def | |
4030 | /YY 0 def /xi 0 def | |
4031 | /Yshadow 0 def /xo 0 def | |
4032 | /arrow 0 def /xp 0 def | |
4033 | /bg false def /xt 0 def | |
4034 | /bgcolor 0 def /xw 0 def | |
4035 | /bordercolor 0 def /xx 0 def | |
4036 | /borderwidth 0 def /yi 0 def | |
4037 | /dd 0 def /yo 0 def | |
4038 | /entry 0 def /yp 0 def | |
4039 | /foreground 0 def /yt 0 def | |
4040 | /yy 0 def | |
4041 | ||
4042 | ||
4043 | % ISOLatin1Encoding stolen from ps_init.ps in GhostScript 2.6.1.4: | |
4044 | /ISOLatin1Encoding where | |
4045 | {pop} | |
4046 | {% -- The ISO Latin-1 encoding vector isn't known, so define it. | |
4047 | % -- The first half is the same as the standard encoding, | |
4048 | % -- except for minus instead of hyphen at code 055. | |
4049 | /ISOLatin1Encoding | |
4050 | StandardEncoding 0 45 getinterval aload pop | |
4051 | /minus | |
4052 | StandardEncoding 46 82 getinterval aload pop | |
4053 | %*** NOTE: the following are missing in the Adobe documentation, | |
4054 | %*** but appear in the displayed table: | |
4055 | %*** macron at 0225, dieresis at 0230, cedilla at 0233, space at 0240. | |
4056 | % 0200 (128) | |
4057 | /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef | |
4058 | /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef | |
4059 | /dotlessi /grave /acute /circumflex /tilde /macron /breve /dotaccent | |
4060 | /dieresis /.notdef /ring /cedilla /.notdef /hungarumlaut /ogonek /caron | |
4061 | % 0240 (160) | |
4062 | /space /exclamdown /cent /sterling | |
4063 | /currency /yen /brokenbar /section | |
4064 | /dieresis /copyright /ordfeminine /guillemotleft | |
4065 | /logicalnot /hyphen /registered /macron | |
4066 | /degree /plusminus /twosuperior /threesuperior | |
4067 | /acute /mu /paragraph /periodcentered | |
4068 | /cedilla /onesuperior /ordmasculine /guillemotright | |
4069 | /onequarter /onehalf /threequarters /questiondown | |
4070 | % 0300 (192) | |
4071 | /Agrave /Aacute /Acircumflex /Atilde | |
4072 | /Adieresis /Aring /AE /Ccedilla | |
4073 | /Egrave /Eacute /Ecircumflex /Edieresis | |
4074 | /Igrave /Iacute /Icircumflex /Idieresis | |
4075 | /Eth /Ntilde /Ograve /Oacute | |
4076 | /Ocircumflex /Otilde /Odieresis /multiply | |
4077 | /Oslash /Ugrave /Uacute /Ucircumflex | |
4078 | /Udieresis /Yacute /Thorn /germandbls | |
4079 | % 0340 (224) | |
4080 | /agrave /aacute /acircumflex /atilde | |
4081 | /adieresis /aring /ae /ccedilla | |
4082 | /egrave /eacute /ecircumflex /edieresis | |
4083 | /igrave /iacute /icircumflex /idieresis | |
4084 | /eth /ntilde /ograve /oacute | |
4085 | /ocircumflex /otilde /odieresis /divide | |
4086 | /oslash /ugrave /uacute /ucircumflex | |
4087 | /udieresis /yacute /thorn /ydieresis | |
4088 | 256 packedarray def | |
4089 | }ifelse | |
4090 | ||
4091 | /reencodeFontISO %def | |
4092 | {dup | |
4093 | length 12 add dict % Make a new font (a new dict the same size | |
4094 | % as the old one) with room for our new symbols. | |
4095 | ||
4096 | begin % Make the new font the current dictionary. | |
4097 | {1 index /FID ne | |
4098 | {def}{pop pop}ifelse | |
4099 | }forall % Copy each of the symbols from the old dictionary | |
4100 | % to the new one except for the font ID. | |
4101 | ||
4102 | currentdict /FontType get 0 ne | |
4103 | {/Encoding ISOLatin1Encoding def}if % Override the encoding with | |
4104 | % the ISOLatin1 encoding. | |
4105 | ||
4106 | % Use the font's bounding box to determine the ascent, descent, | |
4107 | % and overall height; don't forget that these values have to be | |
4108 | % transformed using the font's matrix. | |
4109 | ||
4110 | % ^ (x2 y2) | |
4111 | % | | | |
4112 | % | v | |
4113 | % | +----+ - - | |
4114 | % | | | ^ | |
4115 | % | | | | Ascent (usually > 0) | |
4116 | % | | | | | |
4117 | % (0 0) -> +--+----+--------> | |
4118 | % | | | | |
4119 | % | | v Descent (usually < 0) | |
4120 | % (x1 y1) --> +----+ - - | |
4121 | ||
4122 | currentdict /FontType get 0 ne | |
4123 | {/FontBBox load aload pop % -- x1 y1 x2 y2 | |
4124 | FontMatrix transform /Ascent exch def pop | |
4125 | FontMatrix transform /Descent exch def pop} | |
4126 | {/PrimaryFont FDepVector 0 get def | |
4127 | PrimaryFont /FontBBox get aload pop | |
4128 | PrimaryFont /FontMatrix get transform /Ascent exch def pop | |
4129 | PrimaryFont /FontMatrix get transform /Descent exch def pop | |
4130 | }ifelse | |
4131 | ||
4132 | /FontHeight Ascent Descent sub def % use `sub' because descent < 0 | |
4133 | ||
4134 | % Define these in case they're not in the FontInfo | |
4135 | % (also, here they're easier to get to). | |
4136 | /UnderlinePosition Descent 0.70 mul def | |
4137 | /OverlinePosition Descent UnderlinePosition sub Ascent add def | |
4138 | /StrikeoutPosition Ascent 0.30 mul def | |
4139 | /LineThickness FontHeight 0.05 mul def | |
4140 | /Xshadow FontHeight 0.08 mul def | |
4141 | /Yshadow FontHeight -0.09 mul def | |
4142 | /SpaceBackground Descent neg UnderlinePosition add def | |
4143 | /XBox Descent neg def | |
4144 | /YBox LineThickness 0.7 mul def | |
4145 | ||
4146 | currentdict % Leave the new font on the stack | |
4147 | end % Stop using the font as the current dictionary | |
4148 | definefont % Put the font into the font dictionary | |
4149 | pop % Discard the returned font | |
4150 | }bind def | |
4151 | ||
4152 | % Font definition | |
4153 | /DefFont{findfont exch scalefont reencodeFontISO}def | |
4154 | ||
4155 | % Font selection | |
4156 | /F | |
4157 | {findfont | |
4158 | dup /Ascent get /Ascent exch def | |
4159 | dup /Descent get /Descent exch def | |
4160 | dup /FontHeight get /FontHeight exch def | |
4161 | dup /UnderlinePosition get /UnderlinePosition exch def | |
4162 | dup /OverlinePosition get /OverlinePosition exch def | |
4163 | dup /StrikeoutPosition get /StrikeoutPosition exch def | |
4164 | dup /LineThickness get /LineThickness exch def | |
4165 | dup /Xshadow get /Xshadow exch def | |
4166 | dup /Yshadow get /Yshadow exch def | |
4167 | dup /SpaceBackground get /SpaceBackground exch def | |
4168 | dup /XBox get /XBox exch def | |
4169 | dup /YBox get /YBox exch def | |
4170 | setfont | |
4171 | }def | |
4172 | ||
4173 | /BG | |
4174 | {dup /bg exch def | |
4175 | {mark 4 1 roll ]} | |
4176 | {[ 1.0 1.0 1.0 ]} | |
4177 | ifelse | |
4178 | /bgcolor exch def | |
4179 | }def | |
4180 | ||
4181 | % stack: -- | |
4182 | /FillBgColor{bgcolor aload pop setrgbcolor fill}bind def | |
4183 | ||
4184 | % stack: fill-or-not lower-x lower-y upper-x upper-y |- -- | |
4185 | /doRect | |
4186 | {/rYY exch def | |
4187 | /rXX exch def | |
4188 | /ryy exch def | |
4189 | /rxx exch def | |
4190 | gsave | |
4191 | newpath | |
4192 | rXX rYY moveto | |
4193 | rxx rYY lineto | |
4194 | rxx ryy lineto | |
4195 | rXX ryy lineto | |
4196 | closepath | |
4197 | % top of stack: fill-or-not | |
4198 | {FillBgColor} | |
4199 | {LineThickness setlinewidth stroke} | |
4200 | ifelse | |
4201 | grestore | |
4202 | }bind def | |
4203 | ||
4204 | % stack: string fill-or-not |- -- | |
4205 | /doOutline | |
4206 | {/-fillp- exch def | |
4207 | /-ox- currentpoint /-oy- exch def def | |
4208 | gsave | |
4209 | LineThickness setlinewidth | |
4210 | {st 0 3 -1 roll put | |
4211 | st dup true charpath | |
4212 | -fillp- {gsave FillBgColor grestore}if | |
4213 | stroke stringwidth | |
4214 | -oy- add /-oy- exch def | |
4215 | -ox- add /-ox- exch def | |
4216 | -ox- -oy- moveto | |
4217 | }forall | |
4218 | grestore | |
4219 | -ox- -oy- moveto | |
4220 | }bind def | |
4221 | ||
4222 | % stack: fill-or-not delta |- -- | |
4223 | /doBox | |
4224 | {/dd exch def | |
4225 | xx XBox sub dd sub yy YBox sub dd sub | |
4226 | XX XBox add dd add YY YBox add dd add | |
4227 | doRect | |
4228 | }bind def | |
4229 | ||
4230 | % stack: string |- -- | |
4231 | /doShadow | |
4232 | {gsave | |
4233 | Xshadow Yshadow rmoveto | |
4234 | false doOutline | |
4235 | grestore | |
4236 | }bind def | |
4237 | ||
4238 | % stack: position |- -- | |
4239 | /Hline | |
4240 | {currentpoint exch pop add dup | |
4241 | gsave | |
4242 | newpath | |
4243 | xx exch moveto | |
4244 | XX exch lineto | |
4245 | closepath | |
4246 | LineThickness setlinewidth stroke | |
4247 | grestore | |
4248 | }bind def | |
4249 | ||
4250 | % stack: string |- -- | |
4251 | % effect: 1 - underline 2 - strikeout 4 - overline | |
4252 | % 8 - shadow 16 - box 32 - outline | |
4253 | /S | |
4254 | {/xx currentpoint dup Descent add /yy exch def | |
4255 | Ascent add /YY exch def def | |
4256 | dup stringwidth pop xx add /XX exch def | |
4257 | Effect 8 and 0 ne | |
4258 | {/yy yy Yshadow add def | |
4259 | /XX XX Xshadow add def | |
4260 | }if | |
4261 | bg | |
4262 | {true | |
4263 | Effect 16 and 0 ne | |
4264 | {SpaceBackground doBox} | |
4265 | {xx yy XX YY doRect} | |
4266 | ifelse | |
4267 | }if % background | |
4268 | Effect 16 and 0 ne{false 0 doBox}if % box | |
4269 | Effect 8 and 0 ne{dup doShadow}if % shadow | |
4270 | Effect 32 and 0 ne | |
4271 | {true doOutline} % outline | |
4272 | {show} % normal text | |
4273 | ifelse | |
4274 | Effect 1 and 0 ne{UnderlinePosition Hline}if % underline | |
4275 | Effect 2 and 0 ne{StrikeoutPosition Hline}if % strikeout | |
4276 | Effect 4 and 0 ne{OverlinePosition Hline}if % overline | |
4277 | }bind def | |
4278 | ||
4279 | " | |
4280 | "EBNF EPS prologue") | |
4281 | ||
4282 | ||
4283 | (defconst ebnf-eps-begin | |
4284 | " | |
4285 | end | |
4286 | ||
4287 | % x y #ebnf2ps#begin | |
4288 | /#ebnf2ps#begin | |
4289 | {#ebnf2ps#dict begin /#ebnf2ps#save save def | |
4290 | moveto false BG 0.0 0.0 0.0 setrgbcolor}def | |
4291 | ||
4292 | /#ebnf2ps#end{showpage #ebnf2ps#save restore end}def | |
4293 | ||
0b5ecd6d | 4294 | %%EndProlog |
984ae001 GM |
4295 | " |
4296 | "EBNF EPS begin") | |
4297 | ||
4298 | ||
4299 | (defconst ebnf-eps-end | |
4300 | "#ebnf2ps#end | |
4301 | %%EOF | |
4302 | " | |
4303 | "EBNF EPS end") | |
4304 | ||
4305 | \f | |
3ced5caa VJL |
4306 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
4307 | ;; Header & Footer | |
4308 | ||
4309 | ||
4310 | (defun ebnf-eps-header-footer (value) | |
4311 | ;; evaluate header/footer value | |
4312 | ;; return a string or nil | |
4313 | (let ((tmp (if (symbolp value) | |
4314 | (cond ((fboundp value) (funcall value)) | |
4315 | ((boundp value) (symbol-value value)) | |
4316 | (t nil)) | |
4317 | value))) | |
4318 | (and (stringp tmp) tmp))) | |
4319 | ||
4320 | ||
4321 | (defun ebnf-eps-header () | |
4322 | ;; evaluate header value | |
4323 | (ebnf-eps-header-footer ebnf-eps-header)) | |
4324 | ||
4325 | ||
4326 | (defun ebnf-eps-footer () | |
4327 | ;; evaluate footer value | |
4328 | (ebnf-eps-header-footer ebnf-eps-footer)) | |
4329 | ||
4330 | ||
4331 | ;; hacked fom `ps-output-string-prim' (ps-print.el) | |
4332 | (defun ebnf-eps-string (string) | |
4333 | (let* ((str (string-as-unibyte string)) | |
4334 | (len (length str)) | |
4335 | (index 0) | |
4336 | (new "(") ; insert start-string delimiter | |
4337 | start special) | |
4338 | ;; Find and quote special characters as necessary for PS | |
4339 | ;; This skips everything except control chars, non-ASCII chars, (, ) and \. | |
4340 | (while (setq start (string-match "[^]-~ -'*-[]" str index)) | |
4341 | (setq special (aref str start) | |
4342 | new (concat new | |
4343 | (substring str index start) | |
4344 | (if (and (<= 0 special) (<= special 255)) | |
4345 | (aref ps-string-escape-codes special) | |
4346 | ;; insert hexadecimal representation if character | |
4347 | ;; code is out of range | |
4348 | (format "\\%04X" special))) | |
4349 | index (1+ start))) | |
4350 | (concat new | |
4351 | (and (< index len) | |
4352 | (substring str index len)) | |
4353 | ")"))) ; insert end-string delimiter | |
4354 | ||
4355 | ||
4356 | (defun ebnf-eps-header-footer-comment (str) | |
4357 | ;; parse header/footer comment string | |
4358 | (let ((len (1- (length str))) | |
4359 | (index 0) | |
4360 | new start fmt) | |
4361 | (while (setq start (string-match "%" str index)) | |
4362 | (setq fmt (if (< start len) (aref str (1+ start)) ?\?) | |
4363 | new (concat new | |
4364 | (substring str index start) | |
4365 | (cond ((= fmt ?%) "%") | |
4366 | ((= fmt ?H) (ebnf-eps-header)) | |
4367 | ((= fmt ?F) (ebnf-eps-footer)) | |
4368 | (t nil) | |
4369 | )) | |
4370 | index (+ start 2))) | |
4371 | (ebnf-eps-string (concat new | |
4372 | (and (<= index len) | |
4373 | (substring str index (1+ len))))))) | |
4374 | ||
4375 | ||
4376 | (defun ebnf-eps-header-footer-p (value) | |
4377 | ;; return t if value is non-nil and is not an empty string | |
4378 | (not (or (null value) | |
4379 | (and (stringp value) (string= value ""))))) | |
4380 | ||
4381 | ||
4382 | (defun ebnf-eps-header-comment (str) | |
4383 | ;; set header comment if header is on | |
4384 | (when (ebnf-eps-header-footer-p ebnf-eps-header) | |
4385 | (setq ebnf-eps-header-comment (ebnf-eps-header-footer-comment str)))) | |
4386 | ||
4387 | ||
4388 | (defun ebnf-eps-footer-comment (str) | |
4389 | ;; set footer comment if footer is on | |
4390 | (when (ebnf-eps-header-footer-p ebnf-eps-footer) | |
4391 | (setq ebnf-eps-footer-comment (ebnf-eps-header-footer-comment str)))) | |
4392 | ||
4393 | ||
4394 | (defun ebnf-eps-header-footer-file (filename) | |
4395 | ;; associate header and footer with a filename | |
4396 | (let ((filehf (assoc filename ebnf-eps-file-alist)) | |
4397 | (header (or ebnf-eps-header-comment (ebnf-eps-header))) | |
4398 | (footer (or ebnf-eps-footer-comment (ebnf-eps-footer)))) | |
4399 | (if (null filehf) | |
4400 | (setq ebnf-eps-file-alist (cons (list filename header footer) | |
4401 | ebnf-eps-file-alist)) | |
4402 | (setcar (nthcdr 1 filehf) header) | |
4403 | (setcar (nthcdr 2 filehf) footer)))) | |
4404 | ||
4405 | ||
4406 | (defun ebnf-eps-header-footer-set (filename) | |
4407 | ;; set header and footer from a filename | |
4408 | (let ((header-footer (assoc filename ebnf-eps-file-alist))) | |
4409 | (setq ebnf-eps-header-comment (nth 1 header-footer) | |
4410 | ebnf-eps-footer-comment (nth 2 header-footer)))) | |
4411 | ||
4412 | \f | |
984ae001 GM |
4413 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
4414 | ;; Formatting | |
4415 | ||
4416 | ||
4417 | (defvar ebnf-format-float "%1.3f") | |
4418 | ||
4419 | ||
4420 | (defun ebnf-format-float (&rest floats) | |
4421 | (mapconcat | |
4422 | #'(lambda (float) | |
4423 | (format ebnf-format-float float)) | |
4424 | floats | |
4425 | " ")) | |
4426 | ||
4427 | ||
4428 | (defun ebnf-format-color (format-str color default) | |
4429 | (let* ((the-color (or color default)) | |
b685181e | 4430 | (rgb (ps-color-scale the-color))) |
984ae001 GM |
4431 | (format format-str |
4432 | (concat "[" | |
4433 | (ebnf-format-float (nth 0 rgb) (nth 1 rgb) (nth 2 rgb)) | |
4434 | "]") | |
4435 | the-color))) | |
4436 | ||
4437 | ||
4438 | (defvar ebnf-message-float "%3.2f") | |
4439 | ||
4440 | ||
4441 | (defsubst ebnf-message-float (format-str value) | |
4442 | (message format-str | |
4443 | (format ebnf-message-float value))) | |
4444 | ||
4445 | ||
30fa28b4 VJL |
4446 | (defvar ebnf-total 0) |
4447 | (defvar ebnf-nprod 0) | |
4448 | ||
4449 | ||
984ae001 GM |
4450 | (defsubst ebnf-message-info (messag) |
4451 | (message "%s...%3d%%" | |
4452 | messag | |
4453 | (round (/ (* (setq ebnf-nprod (1+ ebnf-nprod)) 100.0) ebnf-total)))) | |
4454 | ||
4455 | \f | |
4456 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
4457 | ;; Macros | |
4458 | ||
4459 | ||
4460 | (defmacro ebnf-node-kind (vec &optional value) | |
4461 | (if value | |
4462 | `(aset ,vec 0 ,value) | |
4463 | `(aref ,vec 0))) | |
4464 | ||
4465 | ||
4466 | (defmacro ebnf-node-width-func (node width) | |
4467 | `(funcall (aref ,node 1) ,node ,width)) | |
4468 | ||
4469 | ||
4470 | (defmacro ebnf-node-dimension-func (node &optional value) | |
4471 | (if value | |
4472 | `(aset ,node 2 ,value) | |
4473 | `(funcall (aref ,node 2) ,node))) | |
4474 | ||
4475 | ||
4476 | (defmacro ebnf-node-entry (vec &optional value) | |
4477 | (if value | |
4478 | `(aset ,vec 3 ,value) | |
4479 | `(aref ,vec 3))) | |
4480 | ||
4481 | ||
4482 | (defmacro ebnf-node-height (vec &optional value) | |
4483 | (if value | |
4484 | `(aset ,vec 4 ,value) | |
4485 | `(aref ,vec 4))) | |
4486 | ||
4487 | ||
4488 | (defmacro ebnf-node-width (vec &optional value) | |
4489 | (if value | |
4490 | `(aset ,vec 5 ,value) | |
4491 | `(aref ,vec 5))) | |
4492 | ||
4493 | ||
4494 | (defmacro ebnf-node-name (vec) | |
4495 | `(aref ,vec 6)) | |
4496 | ||
4497 | ||
4498 | (defmacro ebnf-node-list (vec &optional value) | |
4499 | (if value | |
4500 | `(aset ,vec 6 ,value) | |
4501 | `(aref ,vec 6))) | |
4502 | ||
4503 | ||
4504 | (defmacro ebnf-node-default (vec) | |
4505 | `(aref ,vec 7)) | |
4506 | ||
4507 | ||
4508 | (defmacro ebnf-node-production (vec &optional value) | |
4509 | (if value | |
4510 | `(aset ,vec 7 ,value) | |
4511 | `(aref ,vec 7))) | |
4512 | ||
4513 | ||
4514 | (defmacro ebnf-node-separator (vec &optional value) | |
4515 | (if value | |
4516 | `(aset ,vec 7 ,value) | |
4517 | `(aref ,vec 7))) | |
4518 | ||
4519 | ||
4520 | (defmacro ebnf-node-action (vec &optional value) | |
4521 | (if value | |
4522 | `(aset ,vec 8 ,value) | |
4523 | `(aref ,vec 8))) | |
4524 | ||
4525 | ||
4526 | (defmacro ebnf-node-generation (node) | |
4527 | `(funcall (ebnf-node-kind ,node) ,node)) | |
4528 | ||
4529 | ||
4530 | (defmacro ebnf-max-width (prod) | |
4531 | `(max (ebnf-node-width ,prod) | |
4532 | (+ (* (length (ebnf-node-name ,prod)) | |
4533 | ebnf-font-width-P) | |
4534 | ebnf-production-horizontal-space))) | |
4535 | ||
4536 | \f | |
4537 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
4538 | ;; PostScript generation | |
4539 | ||
4540 | ||
4541 | (defun ebnf-generate-eps (ebnf-tree) | |
4542 | (let* ((ps-color-p (and ebnf-color-p (ps-color-device))) | |
4543 | (ps-print-color-scale (if ps-color-p | |
4544 | (float (car (ps-color-values "white"))) | |
4545 | 1.0)) | |
4546 | (ebnf-total (length ebnf-tree)) | |
4547 | (ebnf-nprod 0) | |
4548 | (old-ps-output (symbol-function 'ps-output)) | |
4549 | (old-ps-output-string (symbol-function 'ps-output-string)) | |
4550 | (eps-buffer (get-buffer-create ebnf-eps-buffer-name)) | |
4551 | ebnf-debug-ps error-msg horizontal | |
4552 | prod prod-name prod-width prod-height prod-list file-list) | |
4553 | ;; redefines `ps-output' and `ps-output-string' | |
4554 | (defalias 'ps-output 'ebnf-eps-output) | |
4555 | (defalias 'ps-output-string 'ps-output-string-prim) | |
4556 | ;; generate EPS file | |
4557 | (save-excursion | |
4558 | (condition-case data | |
4559 | (progn | |
4560 | (while ebnf-tree | |
4561 | (setq prod (car ebnf-tree) | |
4562 | prod-name (ebnf-node-name prod) | |
4563 | prod-width (ebnf-max-width prod) | |
4564 | prod-height (ebnf-node-height prod) | |
b685181e GM |
4565 | horizontal (memq (ebnf-node-action prod) |
4566 | ebnf-action-list)) | |
984ae001 | 4567 | ;; generate production in EPS buffer |
9a529312 | 4568 | (with-current-buffer eps-buffer |
984ae001 GM |
4569 | (setq ebnf-eps-upper-x 0.0 |
4570 | ebnf-eps-upper-y 0.0 | |
4571 | ebnf-eps-max-width prod-width | |
4572 | ebnf-eps-max-height prod-height) | |
4573 | (ebnf-generate-production prod)) | |
4574 | (if (setq prod-list (cdr (assoc prod-name | |
4575 | ebnf-eps-production-list))) | |
4576 | ;; insert EPS buffer in all buffer associated with production | |
4577 | (ebnf-eps-production-list prod-list 'file-list horizontal | |
4578 | prod-width prod-height eps-buffer) | |
4579 | ;; write EPS file for production | |
4580 | (ebnf-eps-finish-and-write eps-buffer | |
4581 | (ebnf-eps-filename prod-name))) | |
4582 | ;; prepare for next loop | |
9a529312 | 4583 | (with-current-buffer eps-buffer |
984ae001 GM |
4584 | (erase-buffer)) |
4585 | (setq ebnf-tree (cdr ebnf-tree))) | |
4586 | ;; write and kill temporary buffers | |
4587 | (ebnf-eps-write-kill-temp file-list t) | |
4588 | (setq file-list nil)) | |
4589 | ;; handler | |
4590 | ((quit error) | |
4591 | (setq error-msg (error-message-string data))))) | |
4592 | ;; restore `ps-output' and `ps-output-string' | |
4593 | (defalias 'ps-output old-ps-output) | |
4594 | (defalias 'ps-output-string old-ps-output-string) | |
4595 | ;; kill temporary buffers | |
4596 | (kill-buffer eps-buffer) | |
4597 | (ebnf-eps-write-kill-temp file-list nil) | |
4598 | (and error-msg (error error-msg)) | |
4599 | (message " "))) | |
4600 | ||
4601 | ||
4602 | ;; write and kill temporary buffers | |
4603 | (defun ebnf-eps-write-kill-temp (file-list write-p) | |
4604 | (while file-list | |
4605 | (let ((buffer (get-buffer (concat " *" (car file-list) "*")))) | |
4606 | (when buffer | |
4607 | (and write-p | |
4608 | (ebnf-eps-finish-and-write buffer (car file-list))) | |
4609 | (kill-buffer buffer))) | |
4610 | (setq file-list (cdr file-list)))) | |
4611 | ||
4612 | ||
4613 | ;; insert EPS buffer in all buffer associated with production | |
4614 | (defun ebnf-eps-production-list (prod-list file-list-sym horizontal | |
4615 | prod-width prod-height eps-buffer) | |
4616 | (while prod-list | |
4617 | (add-to-list file-list-sym (car prod-list)) | |
9a529312 | 4618 | (with-current-buffer (get-buffer-create (concat " *" (car prod-list) "*")) |
984ae001 GM |
4619 | (goto-char (point-max)) |
4620 | (cond | |
4621 | ;; first production | |
4622 | ((zerop (buffer-size)) | |
4623 | (setq ebnf-eps-upper-x 0.0 | |
4624 | ebnf-eps-upper-y 0.0 | |
4625 | ebnf-eps-max-width prod-width | |
4626 | ebnf-eps-max-height prod-height)) | |
4627 | ;; horizontal | |
4628 | (horizontal | |
4629 | (ebnf-eop-horizontal ebnf-eps-prod-width) | |
4630 | (setq ebnf-eps-max-width (+ ebnf-eps-max-width | |
4631 | ebnf-production-horizontal-space | |
4632 | prod-width) | |
4633 | ebnf-eps-max-height (max ebnf-eps-max-height prod-height))) | |
4634 | ;; vertical | |
4635 | (t | |
4636 | (ebnf-eop-vertical ebnf-eps-max-height) | |
4637 | (setq ebnf-eps-upper-x (max ebnf-eps-upper-x ebnf-eps-max-width) | |
4638 | ebnf-eps-upper-y (if (zerop ebnf-eps-upper-y) | |
4639 | ebnf-eps-max-height | |
4640 | (+ ebnf-eps-upper-y | |
4641 | ebnf-production-vertical-space | |
4642 | ebnf-eps-max-height)) | |
4643 | ebnf-eps-max-width prod-width | |
4644 | ebnf-eps-max-height prod-height)) | |
4645 | ) | |
4646 | (setq ebnf-eps-prod-width prod-width) | |
b0de446f | 4647 | (insert-buffer-substring eps-buffer)) |
984ae001 GM |
4648 | (setq prod-list (cdr prod-list)))) |
4649 | ||
4650 | ||
4651 | (defun ebnf-generate (ebnf-tree) | |
4652 | (let* ((ps-color-p (and ebnf-color-p (ps-color-device))) | |
4653 | (ps-print-color-scale (if ps-color-p | |
4654 | (float (car (ps-color-values "white"))) | |
4655 | 1.0)) | |
4656 | ps-zebra-stripes ps-line-number ps-razzle-dazzle | |
4657 | ps-print-hook | |
4658 | ps-print-begin-sheet-hook | |
4659 | ps-print-begin-page-hook | |
4660 | ps-print-begin-column-hook) | |
4661 | (ps-generate (current-buffer) (point-min) (point-max) | |
4662 | 'ebnf-generate-postscript))) | |
4663 | ||
4664 | ||
4665 | (defvar ebnf-tree nil) | |
4666 | (defvar ebnf-direction "R") | |
984ae001 GM |
4667 | |
4668 | ||
4669 | (defun ebnf-generate-postscript (from to) | |
4670 | (ebnf-begin-file) | |
4671 | (if ebnf-horizontal-max-height | |
4672 | (ebnf-generate-with-max-height) | |
4673 | (ebnf-generate-without-max-height)) | |
4674 | (message " ")) | |
4675 | ||
4676 | ||
4677 | (defun ebnf-generate-with-max-height () | |
4678 | (let ((ebnf-total (length ebnf-tree)) | |
4679 | (ebnf-nprod 0) | |
4680 | next-line max-height prod the-width) | |
4681 | (while ebnf-tree | |
4682 | ;; find next line point | |
4683 | (setq next-line ebnf-tree | |
4684 | prod (car ebnf-tree) | |
4685 | max-height (ebnf-node-height prod)) | |
4686 | (ebnf-begin-line prod (ebnf-max-width prod)) | |
4687 | (while (and (setq next-line (cdr next-line)) | |
4688 | (setq prod (car next-line)) | |
4689 | (memq (ebnf-node-action prod) ebnf-action-list) | |
4690 | (setq the-width (ebnf-max-width prod)) | |
4691 | (<= the-width ps-width-remaining)) | |
4692 | (setq max-height (max max-height (ebnf-node-height prod)) | |
4693 | ps-width-remaining (- ps-width-remaining | |
4694 | (+ the-width | |
4695 | ebnf-production-horizontal-space)))) | |
4696 | ;; generate current line | |
4697 | (ebnf-newline max-height) | |
4698 | (setq prod (car ebnf-tree)) | |
4699 | (ebnf-generate-production prod) | |
4700 | (while (not (eq (setq ebnf-tree (cdr ebnf-tree)) next-line)) | |
4701 | (ebnf-eop-horizontal (ebnf-max-width prod)) | |
4702 | (setq prod (car ebnf-tree)) | |
4703 | (ebnf-generate-production prod)) | |
4704 | (ebnf-eop-vertical max-height)))) | |
4705 | ||
4706 | ||
4707 | (defun ebnf-generate-without-max-height () | |
4708 | (let ((ebnf-total (length ebnf-tree)) | |
4709 | (ebnf-nprod 0) | |
4710 | max-height prod bef-width cur-width) | |
4711 | (while ebnf-tree | |
4712 | ;; generate current line | |
4713 | (setq prod (car ebnf-tree) | |
4714 | max-height (ebnf-node-height prod) | |
4715 | bef-width (ebnf-max-width prod)) | |
4716 | (ebnf-begin-line prod bef-width) | |
4717 | (ebnf-generate-production prod) | |
4718 | (while (and (setq ebnf-tree (cdr ebnf-tree)) | |
4719 | (setq prod (car ebnf-tree)) | |
4720 | (memq (ebnf-node-action prod) ebnf-action-list) | |
4721 | (setq cur-width (ebnf-max-width prod)) | |
4722 | (<= cur-width ps-width-remaining) | |
4723 | (<= (ebnf-node-height prod) ps-height-remaining)) | |
4724 | (ebnf-eop-horizontal bef-width) | |
4725 | (ebnf-generate-production prod) | |
4726 | (setq bef-width cur-width | |
4727 | max-height (max max-height (ebnf-node-height prod)) | |
4728 | ps-width-remaining (- ps-width-remaining | |
4729 | (+ cur-width | |
4730 | ebnf-production-horizontal-space)))) | |
4731 | (ebnf-eop-vertical max-height) | |
4732 | ;; prepare next line | |
4733 | (ebnf-newline max-height)))) | |
4734 | ||
4735 | ||
4736 | (defun ebnf-begin-line (prod width) | |
4737 | (and (or (eq (ebnf-node-action prod) 'form-feed) | |
4738 | (> (ebnf-node-height prod) ps-height-remaining)) | |
4739 | (ebnf-new-page)) | |
4740 | (setq ps-width-remaining (- ps-width-remaining | |
4741 | (+ width | |
4742 | ebnf-production-horizontal-space)))) | |
4743 | ||
4744 | ||
4745 | (defun ebnf-newline (height) | |
4746 | (and (> height ps-height-remaining) | |
4747 | (ebnf-new-page)) | |
4748 | (setq ps-width-remaining ps-print-width | |
4749 | ps-height-remaining (- ps-height-remaining | |
4750 | (+ height | |
4751 | ebnf-production-vertical-space)))) | |
4752 | ||
4753 | ||
4754 | ;; [production width-fun dim-fun entry height width name production action] | |
4755 | (defun ebnf-generate-production (production) | |
4756 | (ebnf-message-info "Generating") | |
4757 | (run-hooks 'ebnf-production-hook) | |
ac4780a1 VJL |
4758 | (ps-output-string (if ebnf-production-name-p |
4759 | (ebnf-node-name production) | |
4760 | "")) | |
984ae001 GM |
4761 | (ps-output " " |
4762 | (ebnf-format-float | |
4763 | (ebnf-node-width production) | |
ac4780a1 VJL |
4764 | (+ (if ebnf-production-name-p |
4765 | ebnf-basic-height | |
4766 | 0.0) | |
984ae001 GM |
4767 | (ebnf-node-entry (ebnf-node-production production)))) |
4768 | " BOP\n") | |
4769 | (ebnf-node-generation (ebnf-node-production production)) | |
4770 | (ps-output "EOS\n")) | |
4771 | ||
4772 | ||
4773 | ;; [alternative width-fun dim-fun entry height width list] | |
4774 | (defun ebnf-generate-alternative (alternative) | |
4775 | (let ((alt (ebnf-node-list alternative)) | |
4776 | (entry (ebnf-node-entry alternative)) | |
4777 | (nlist 0) | |
4778 | alt-height alt-entry) | |
4779 | (while alt | |
4780 | (ps-output (ebnf-format-float (- entry (ebnf-node-entry (car alt)))) | |
4781 | " ") | |
4782 | (setq entry (- entry (ebnf-node-height (car alt)) ebnf-vertical-space) | |
4783 | nlist (1+ nlist) | |
4784 | alt (cdr alt))) | |
4785 | (ps-output (format "%d " nlist) | |
4786 | (ebnf-format-float (ebnf-node-width alternative)) | |
4787 | " AT\n") | |
4788 | (setq alt (ebnf-node-list alternative)) | |
4789 | (when alt | |
4790 | (ebnf-node-generation (car alt)) | |
4791 | (setq alt-height (- (ebnf-node-height (car alt)) | |
4792 | (ebnf-node-entry (car alt))))) | |
4793 | (while (setq alt (cdr alt)) | |
4794 | (setq alt-entry (ebnf-node-entry (car alt))) | |
4795 | (ebnf-vertical-movement | |
4796 | (- (+ alt-height ebnf-vertical-space alt-entry))) | |
4797 | (ebnf-node-generation (car alt)) | |
4798 | (setq alt-height (- (ebnf-node-height (car alt)) alt-entry)))) | |
4799 | (ps-output "EOS\n")) | |
4800 | ||
4801 | ||
4802 | ;; [sequence width-fun dim-fun entry height width list] | |
4803 | (defun ebnf-generate-sequence (sequence) | |
4804 | (ps-output "BOS\n") | |
4805 | (let ((seq (ebnf-node-list sequence)) | |
4806 | seq-width) | |
4807 | (when seq | |
4808 | (ebnf-node-generation (car seq)) | |
4809 | (setq seq-width (ebnf-node-width (car seq)))) | |
4810 | (while (setq seq (cdr seq)) | |
4811 | (ebnf-horizontal-movement seq-width) | |
4812 | (ebnf-node-generation (car seq)) | |
4813 | (setq seq-width (ebnf-node-width (car seq))))) | |
4814 | (ps-output "EOS\n")) | |
4815 | ||
4816 | ||
4817 | ;; [terminal width-fun dim-fun entry height width name] | |
4818 | (defun ebnf-generate-terminal (terminal) | |
4819 | (ebnf-gen-terminal terminal "T")) | |
4820 | ||
4821 | ||
4822 | ;; [non-terminal width-fun dim-fun entry height width name] | |
4823 | (defun ebnf-generate-non-terminal (non-terminal) | |
4824 | (ebnf-gen-terminal non-terminal "NT")) | |
4825 | ||
4826 | ||
4827 | ;; [empty width-fun dim-fun entry height width] | |
4828 | (defun ebnf-generate-empty (empty) | |
4829 | (ebnf-empty-alternative (ebnf-node-width empty))) | |
4830 | ||
4831 | ||
4832 | ;; [optional width-fun dim-fun entry height width element] | |
4833 | (defun ebnf-generate-optional (optional) | |
4834 | (let ((the-optional (ebnf-node-list optional))) | |
4835 | (ps-output (ebnf-format-float | |
4836 | (+ (- (ebnf-node-height the-optional) | |
4837 | (ebnf-node-entry optional)) | |
4838 | ebnf-vertical-space) | |
4839 | (ebnf-node-width optional)) | |
4840 | " OP\n") | |
4841 | (ebnf-node-generation the-optional) | |
4842 | (ps-output "EOS\n"))) | |
4843 | ||
4844 | ||
4845 | ;; [one-or-more width-fun dim-fun entry height width element separator] | |
4846 | (defun ebnf-generate-one-or-more (one-or-more) | |
4847 | (let* ((width (ebnf-node-width one-or-more)) | |
4848 | (sep (ebnf-node-separator one-or-more)) | |
4849 | (entry (- (ebnf-node-entry one-or-more) | |
4850 | (if sep | |
4851 | (ebnf-node-entry sep) | |
4852 | 0)))) | |
4853 | (ps-output (ebnf-format-float entry width) | |
4854 | " OM\n") | |
4855 | (ebnf-node-generation (ebnf-node-list one-or-more)) | |
4856 | (ebnf-vertical-movement entry) | |
4857 | (if sep | |
4858 | (let ((ebnf-direction "L")) | |
4859 | (ebnf-node-generation sep)) | |
3ced5caa VJL |
4860 | (ebnf-empty-alternative (- width |
4861 | ebnf-horizontal-space | |
4862 | ebnf-basic-width-extra)))) | |
984ae001 GM |
4863 | (ps-output "EOS\n")) |
4864 | ||
4865 | ||
4866 | ;; [zero-or-more width-fun dim-fun entry height width element separator] | |
4867 | (defun ebnf-generate-zero-or-more (zero-or-more) | |
4868 | (let* ((width (ebnf-node-width zero-or-more)) | |
4869 | (node-list (ebnf-node-list zero-or-more)) | |
4870 | (list-entry (ebnf-node-entry node-list)) | |
4871 | (node-sep (ebnf-node-separator zero-or-more)) | |
4872 | (entry (+ list-entry | |
4873 | ebnf-vertical-space | |
4874 | (if node-sep | |
4875 | (- (ebnf-node-height node-sep) | |
4876 | (ebnf-node-entry node-sep)) | |
3ced5caa | 4877 | ebnf-basic-empty-height)))) |
984ae001 GM |
4878 | (ps-output (ebnf-format-float entry |
4879 | (+ (- (ebnf-node-height node-list) | |
4880 | list-entry) | |
4881 | ebnf-vertical-space) | |
4882 | width) | |
4883 | " ZM\n") | |
4884 | (ebnf-node-generation (ebnf-node-list zero-or-more)) | |
4885 | (ebnf-vertical-movement entry) | |
4886 | (if (ebnf-node-separator zero-or-more) | |
4887 | (let ((ebnf-direction "L")) | |
4888 | (ebnf-node-generation (ebnf-node-separator zero-or-more))) | |
3ced5caa VJL |
4889 | (ebnf-empty-alternative (- width |
4890 | ebnf-horizontal-space | |
4891 | ebnf-basic-width-extra)))) | |
984ae001 GM |
4892 | (ps-output "EOS\n")) |
4893 | ||
4894 | ||
4895 | ;; [special width-fun dim-fun entry height width name] | |
4896 | (defun ebnf-generate-special (special) | |
4897 | (ebnf-gen-terminal special "SP")) | |
4898 | ||
4899 | ||
4900 | ;; [repeat width-fun dim-fun entry height width times element] | |
4901 | (defun ebnf-generate-repeat (repeat) | |
4902 | (let ((times (ebnf-node-name repeat)) | |
4903 | (element (ebnf-node-separator repeat))) | |
4904 | (ps-output-string times) | |
4905 | (ps-output " " | |
4906 | (ebnf-format-float | |
4907 | (ebnf-node-entry repeat) | |
4908 | (ebnf-node-height repeat) | |
4909 | (ebnf-node-width repeat) | |
4910 | (if element | |
4911 | (+ (ebnf-node-width element) | |
4912 | ebnf-space-R ebnf-space-R ebnf-space-R | |
4913 | (* (length times) ebnf-font-width-R)) | |
4914 | 0.0)) | |
4915 | " " ebnf-direction "RP\n") | |
4916 | (and element | |
4917 | (ebnf-node-generation element))) | |
4918 | (ps-output "EOS\n")) | |
4919 | ||
4920 | ||
4921 | ;; [except width-fun dim-fun entry height width element element] | |
4922 | (defun ebnf-generate-except (except) | |
4923 | (let* ((element (ebnf-node-list except)) | |
4924 | (exception (ebnf-node-separator except)) | |
4925 | (width (ebnf-node-width element))) | |
4926 | (ps-output (ebnf-format-float | |
4927 | width | |
4928 | (ebnf-node-entry except) | |
4929 | (ebnf-node-height except) | |
4930 | (ebnf-node-width except) | |
4931 | (+ width | |
4932 | ebnf-space-E ebnf-space-E ebnf-space-E | |
4933 | ebnf-font-width-E | |
4934 | (if exception | |
4935 | (+ (ebnf-node-width exception) ebnf-space-E) | |
4936 | 0.0))) | |
4937 | " " ebnf-direction "EX\n") | |
4938 | (ebnf-node-generation (ebnf-node-list except)) | |
4939 | (when exception | |
4940 | (ebnf-horizontal-movement (+ width ebnf-space-E | |
4941 | ebnf-font-width-E ebnf-space-E)) | |
4942 | (ebnf-node-generation exception))) | |
4943 | (ps-output "EOS\n")) | |
4944 | ||
4945 | ||
4946 | (defun ebnf-gen-terminal (node code) | |
4947 | (ps-output-string (ebnf-node-name node)) | |
4948 | (ps-output " " (ebnf-format-float (ebnf-node-width node)) | |
4949 | " " ebnf-direction code | |
4950 | (if (ebnf-node-default node) | |
4951 | "D\n" | |
4952 | "\n"))) | |
4953 | ||
4954 | \f | |
4955 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
4956 | ;; Internal functions | |
4957 | ||
4958 | ||
ac4780a1 VJL |
4959 | (defun ebnf-directory (fun &optional directory) |
4960 | "Process files in DIRECTORY applying function FUN on each file. | |
4961 | ||
815cbda2 | 4962 | If DIRECTORY is nil, use `default-directory'. |
ac4780a1 | 4963 | |
815cbda2 | 4964 | Only files in DIRECTORY that match `ebnf-file-suffix-regexp' (which see) are |
ac4780a1 VJL |
4965 | processed." |
4966 | (let ((files (directory-files (or directory default-directory) | |
4967 | t ebnf-file-suffix-regexp))) | |
4968 | (while files | |
4969 | (set-buffer (find-file-noselect (car files))) | |
4970 | (funcall fun) | |
4971 | (setq buffer-backed-up t) ; Do not back it up. | |
4972 | (save-buffer) ; Just save new version. | |
4973 | (kill-buffer (current-buffer)) | |
4974 | (setq files (cdr files))))) | |
4975 | ||
4976 | ||
4977 | (defun ebnf-file (fun file &optional do-not-kill-buffer-when-done) | |
815cbda2 | 4978 | "Process the named FILE applying function FUN. |
ac4780a1 VJL |
4979 | |
4980 | If optional arg DO-NOT-KILL-BUFFER-WHEN-DONE is non-nil, the buffer isn't | |
4981 | killed after process termination." | |
4982 | (set-buffer (find-file-noselect file)) | |
4983 | (funcall fun) | |
4984 | (or do-not-kill-buffer-when-done | |
4985 | (kill-buffer (current-buffer)))) | |
4986 | ||
4987 | ||
6a5275dc GM |
4988 | ;; function `ebnf-range-regexp' is used to avoid a bug of `skip-chars-forward' |
4989 | ;; on version 20.4.1, that is, it doesn't accept ranges like "\240-\377" (or | |
4990 | ;; "\177-\237"), but it accepts the character sequence from \240 to \377 (or | |
4991 | ;; from \177 to \237). It seems that version 20.7 has the same problem. | |
4992 | (defun ebnf-range-regexp (prefix from to) | |
4993 | (let (str) | |
4994 | (while (<= from to) | |
4995 | (setq str (concat str (char-to-string from)) | |
4996 | from (1+ from))) | |
4997 | (concat prefix str))) | |
4998 | ||
4999 | ||
984ae001 GM |
5000 | (defvar ebnf-map-name |
5001 | (let ((map (make-vector 256 ?\_))) | |
a6d6a87a GM |
5002 | (mapc #'(lambda (char) |
5003 | (aset map char char)) | |
5004 | (concat "#$%&+-.0123456789=?@~" | |
5005 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
5006 | "abcdefghijklmnopqrstuvwxyz")) | |
984ae001 GM |
5007 | map)) |
5008 | ||
5009 | ||
5010 | (defun ebnf-eps-filename (str) | |
5011 | (let* ((len (length str)) | |
5012 | (stri 0) | |
3ced5caa VJL |
5013 | ;; to keep compatibility with Emacs 20 & 21: |
5014 | ;; DO NOT REPLACE `?\ ' BY `?\s' | |
5015 | (new (make-string len ?\ ))) | |
984ae001 GM |
5016 | (while (< stri len) |
5017 | (aset new stri (aref ebnf-map-name (aref str stri))) | |
5018 | (setq stri (1+ stri))) | |
5019 | (concat ebnf-eps-prefix new ".eps"))) | |
5020 | ||
5021 | ||
5022 | (defun ebnf-eps-output (&rest args) | |
5023 | (while args | |
5024 | (insert (car args)) | |
5025 | (setq args (cdr args)))) | |
5026 | ||
5027 | ||
5028 | (defun ebnf-generate-region (from to gen-func) | |
5029 | (run-hooks 'ebnf-hook) | |
5030 | (let ((ebnf-limit (max from to)) | |
ac4780a1 | 5031 | (error-msg "SYNTAX") |
984ae001 GM |
5032 | the-point) |
5033 | (save-excursion | |
5034 | (save-restriction | |
5035 | (save-match-data | |
5036 | (condition-case data | |
5037 | (let ((tree (ebnf-parse-and-sort (min from to)))) | |
5038 | (when gen-func | |
ac4780a1 VJL |
5039 | (setq error-msg "EMPTY RULES" |
5040 | tree (ebnf-eliminate-empty-rules tree)) | |
5041 | (setq error-msg "OPTMIZE" | |
5042 | tree (ebnf-optimize tree)) | |
5043 | (setq error-msg "DIMENSIONS" | |
5044 | tree (ebnf-dimensions tree)) | |
5045 | (setq error-msg "GENERATION") | |
5046 | (funcall gen-func tree)) | |
5047 | (setq error-msg nil)) ; here it's ok | |
984ae001 GM |
5048 | ;; handler |
5049 | ((quit error) | |
5050 | (ding) | |
ac4780a1 VJL |
5051 | (setq the-point (max (1- (point)) (point-min)) |
5052 | error-msg (concat error-msg ": " | |
5053 | (error-message-string data) | |
ea946fcc VJL |
5054 | ", " |
5055 | (and (string= error-msg "SYNTAX") | |
5056 | (format "at position %d " | |
5057 | the-point)) | |
5058 | (format "in buffer \"%s\"." | |
5059 | (buffer-name))))))))) | |
984ae001 | 5060 | (cond |
ac4780a1 VJL |
5061 | ;; error occurred |
5062 | (error-msg | |
5063 | (goto-char the-point) | |
5064 | (if ebnf-stop-on-error | |
5065 | (error error-msg) | |
29a4e67d | 5066 | (message "%s" error-msg))) |
ac4780a1 | 5067 | ;; generated output OK |
984ae001 GM |
5068 | (gen-func |
5069 | nil) | |
ac4780a1 | 5070 | ;; syntax checked OK |
984ae001 | 5071 | (t |
ab3256ed | 5072 | (message "EBNF syntactic analysis: NO ERRORS."))))) |
984ae001 GM |
5073 | |
5074 | ||
5075 | (defun ebnf-parse-and-sort (start) | |
3ced5caa | 5076 | (ebnf-log "(ebnf-parse-and-sort %S)" start) |
984ae001 GM |
5077 | (ebnf-begin-job) |
5078 | (let ((tree (funcall ebnf-parser-func start))) | |
5079 | (if ebnf-sort-production | |
5080 | (progn | |
5081 | (message "Sorting...") | |
5082 | (sort tree | |
5083 | (if (eq ebnf-sort-production 'ascending) | |
5084 | 'ebnf-sorter-ascending | |
5085 | 'ebnf-sorter-descending))) | |
5086 | (nreverse tree)))) | |
5087 | ||
5088 | ||
5089 | (defun ebnf-sorter-ascending (first second) | |
5090 | (string< (ebnf-node-name first) | |
5091 | (ebnf-node-name second))) | |
5092 | ||
5093 | ||
5094 | (defun ebnf-sorter-descending (first second) | |
5095 | (string< (ebnf-node-name second) | |
5096 | (ebnf-node-name first))) | |
5097 | ||
5098 | ||
5099 | (defun ebnf-empty-alternative (width) | |
5100 | (ps-output (ebnf-format-float width) " EA\n")) | |
5101 | ||
5102 | ||
5103 | (defun ebnf-vertical-movement (height) | |
5104 | (ps-output (ebnf-format-float height) " vm\n")) | |
5105 | ||
5106 | ||
5107 | (defun ebnf-horizontal-movement (width) | |
5108 | (ps-output (ebnf-format-float width) " hm\n")) | |
5109 | ||
5110 | ||
5111 | (defun ebnf-entry (height) | |
5112 | (* height ebnf-entry-percentage)) | |
5113 | ||
5114 | ||
5115 | (defun ebnf-eop-vertical (height) | |
5116 | (ps-output (ebnf-format-float (+ height ebnf-production-vertical-space)) | |
5117 | " EOPV\n\n")) | |
5118 | ||
5119 | ||
5120 | (defun ebnf-eop-horizontal (width) | |
5121 | (ps-output (ebnf-format-float (+ width ebnf-production-horizontal-space)) | |
5122 | " EOPH\n\n")) | |
5123 | ||
5124 | ||
5125 | (defun ebnf-new-page () | |
5126 | (when (< ps-height-remaining ps-print-height) | |
5127 | (run-hooks 'ebnf-page-hook) | |
5128 | (ps-next-page) | |
5129 | (ps-output "\n"))) | |
5130 | ||
5131 | ||
5132 | (defsubst ebnf-font-size (font) (nth 0 font)) | |
5133 | (defsubst ebnf-font-name (font) (nth 1 font)) | |
5134 | (defsubst ebnf-font-foreground (font) (nth 2 font)) | |
5135 | (defsubst ebnf-font-background (font) (nth 3 font)) | |
5136 | (defsubst ebnf-font-list (font) (nthcdr 4 font)) | |
5137 | (defsubst ebnf-font-attributes (font) | |
5138 | (lsh (ps-extension-bit (cdr font)) -2)) | |
5139 | ||
5140 | ||
5141 | (defconst ebnf-font-name-select | |
5142 | (vector 'normal 'bold 'italic 'bold-italic)) | |
5143 | ||
5144 | ||
5145 | (defun ebnf-font-name-select (font) | |
5146 | (let* ((font-list (ebnf-font-list font)) | |
5147 | (font-index (+ (if (memq 'bold font-list) 1 0) | |
5148 | (if (memq 'italic font-list) 2 0))) | |
5149 | (name (ebnf-font-name font)) | |
5150 | (database (cdr (assoc name ps-font-info-database))) | |
5151 | (info-list (or (cdr (assoc 'fonts database)) | |
5152 | (error "Invalid font: %s" name)))) | |
5153 | (or (cdr (assoc (aref ebnf-font-name-select font-index) | |
5154 | info-list)) | |
5155 | (error "Invalid attributes for font %s" name)))) | |
5156 | ||
5157 | ||
5158 | (defun ebnf-font-select (font select) | |
5159 | (let* ((name (ebnf-font-name font)) | |
5160 | (database (cdr (assoc name ps-font-info-database))) | |
5161 | (size (cdr (assoc 'size database))) | |
5162 | (base (cdr (assoc select database)))) | |
5163 | (if (and size base) | |
5164 | (/ (* (ebnf-font-size font) base) | |
5165 | size) | |
5166 | (error "Invalid font: %s" name)))) | |
5167 | ||
5168 | ||
5169 | (defsubst ebnf-font-width (font) | |
5170 | (ebnf-font-select font 'avg-char-width)) | |
5171 | (defsubst ebnf-font-height (font) | |
5172 | (ebnf-font-select font 'line-height)) | |
5173 | ||
5174 | ||
ac4780a1 VJL |
5175 | (defconst ebnf-syntax-alist |
5176 | ;; 0.syntax 1.parser 2.initializer | |
5177 | '((iso-ebnf ebnf-iso-parser ebnf-iso-initialize) | |
5178 | (yacc ebnf-yac-parser ebnf-yac-initialize) | |
5179 | (abnf ebnf-abn-parser ebnf-abn-initialize) | |
6ca94f87 | 5180 | (ebnf ebnf-bnf-parser ebnf-bnf-initialize) |
6411a60a VJL |
5181 | (ebnfx ebnf-ebx-parser ebnf-ebx-initialize) |
5182 | (dtd ebnf-dtd-parser ebnf-dtd-initialize)) | |
4303661c | 5183 | "Alist associating EBNF syntax with a parser and an initializer.") |
ac4780a1 VJL |
5184 | |
5185 | ||
984ae001 | 5186 | (defun ebnf-begin-job () |
ae6f46f9 | 5187 | (ps-printing-region nil nil nil) |
984ae001 GM |
5188 | (if ebnf-use-float-format |
5189 | (setq ebnf-format-float "%1.3f" | |
5190 | ebnf-message-float "%3.2f") | |
5191 | (setq ebnf-format-float "%s" | |
5192 | ebnf-message-float "%s")) | |
5193 | (ebnf-otz-initialize) | |
5194 | ;; to avoid compilation gripes when calling autoloaded functions | |
ac4780a1 VJL |
5195 | (let ((init (or (assoc ebnf-syntax ebnf-syntax-alist) |
5196 | (assoc 'ebnf ebnf-syntax-alist)))) | |
5197 | (setq ebnf-parser-func (nth 1 init)) | |
5198 | (funcall (nth 2 init))) | |
984ae001 GM |
5199 | (and ebnf-terminal-regexp ; ensures that it's a string or nil |
5200 | (not (stringp ebnf-terminal-regexp)) | |
5201 | (setq ebnf-terminal-regexp nil)) | |
5202 | (or (and ebnf-eps-prefix ; ensures that it's a string | |
5203 | (stringp ebnf-eps-prefix)) | |
5204 | (setq ebnf-eps-prefix "ebnf--")) | |
5205 | (setq ebnf-entry-percentage ; ensures value between 0.0 and 1.0 | |
5206 | (min (max ebnf-entry-percentage 0.0) 1.0) | |
5207 | ebnf-action-list (if ebnf-horizontal-orientation | |
5208 | '(nil keep-line) | |
5209 | '(keep-line)) | |
5210 | ebnf-settings nil | |
5211 | ebnf-fonts-required nil | |
5212 | ebnf-action nil | |
5213 | ebnf-default-p nil | |
5214 | ebnf-eps-context nil | |
3ced5caa | 5215 | ebnf-eps-file-alist nil |
984ae001 | 5216 | ebnf-eps-production-list nil |
3ced5caa VJL |
5217 | ebnf-eps-header-comment nil |
5218 | ebnf-eps-footer-comment nil | |
984ae001 GM |
5219 | ebnf-eps-upper-x 0.0 |
5220 | ebnf-eps-upper-y 0.0 | |
5221 | ebnf-font-height-P (ebnf-font-height ebnf-production-font) | |
5222 | ebnf-font-height-T (ebnf-font-height ebnf-terminal-font) | |
5223 | ebnf-font-height-NT (ebnf-font-height ebnf-non-terminal-font) | |
5224 | ebnf-font-height-S (ebnf-font-height ebnf-special-font) | |
5225 | ebnf-font-height-E (ebnf-font-height ebnf-except-font) | |
5226 | ebnf-font-height-R (ebnf-font-height ebnf-repeat-font) | |
5227 | ebnf-font-width-P (ebnf-font-width ebnf-production-font) | |
5228 | ebnf-font-width-T (ebnf-font-width ebnf-terminal-font) | |
5229 | ebnf-font-width-NT (ebnf-font-width ebnf-non-terminal-font) | |
5230 | ebnf-font-width-S (ebnf-font-width ebnf-special-font) | |
5231 | ebnf-font-width-E (ebnf-font-width ebnf-except-font) | |
5232 | ebnf-font-width-R (ebnf-font-width ebnf-repeat-font) | |
5233 | ebnf-space-T (* ebnf-font-height-T 0.5) | |
5234 | ebnf-space-NT (* ebnf-font-height-NT 0.5) | |
5235 | ebnf-space-S (* ebnf-font-height-S 0.5) | |
5236 | ebnf-space-E (* ebnf-font-height-E 0.5) | |
5237 | ebnf-space-R (* ebnf-font-height-R 0.5)) | |
5238 | (let ((basic (+ ebnf-font-height-T ebnf-font-height-NT))) | |
3ced5caa VJL |
5239 | (setq ebnf-basic-width (* basic 0.5) |
5240 | ebnf-horizontal-space (+ basic basic) | |
5241 | ebnf-basic-empty-height (* ebnf-basic-width 0.5) | |
5242 | ebnf-basic-height ebnf-basic-width | |
5243 | ebnf-vertical-space ebnf-basic-width | |
5244 | ebnf-basic-width-extra (- ebnf-basic-width | |
5245 | ebnf-arrow-extra-width | |
5246 | 0.1)) ; error factor | |
984ae001 GM |
5247 | ;; ensures value is greater than zero |
5248 | (or (and (numberp ebnf-production-horizontal-space) | |
5249 | (> ebnf-production-horizontal-space 0.0)) | |
5250 | (setq ebnf-production-horizontal-space basic)) | |
5251 | ;; ensures value is greater than zero | |
5252 | (or (and (numberp ebnf-production-vertical-space) | |
5253 | (> ebnf-production-vertical-space 0.0)) | |
3ced5caa VJL |
5254 | (setq ebnf-production-vertical-space basic))) |
5255 | (ebnf-log "(ebnf-begin-job)") | |
5256 | (ebnf-log " ebnf-arrow-extra-width ............ : %7.3f" ebnf-arrow-extra-width) | |
5257 | (ebnf-log " ebnf-arrow-scale .................. : %7.3f" ebnf-arrow-scale) | |
5258 | (ebnf-log " ebnf-basic-width-extra ............ : %7.3f" ebnf-basic-width-extra) | |
5259 | (ebnf-log " ebnf-basic-width .................. : %7.3f (T)" ebnf-basic-width) | |
5260 | (ebnf-log " ebnf-horizontal-space ............. : %7.3f (4T)" ebnf-horizontal-space) | |
5261 | (ebnf-log " ebnf-basic-empty-height ........... : %7.3f (hT)" ebnf-basic-empty-height) | |
5262 | (ebnf-log " ebnf-basic-height ................. : %7.3f (T)" ebnf-basic-height) | |
5263 | (ebnf-log " ebnf-vertical-space ............... : %7.3f (T)" ebnf-vertical-space) | |
5264 | (ebnf-log " ebnf-production-horizontal-space .. : %7.3f (2T)" ebnf-production-horizontal-space) | |
5265 | (ebnf-log " ebnf-production-vertical-space .... : %7.3f (2T)" ebnf-production-vertical-space)) | |
984ae001 GM |
5266 | |
5267 | ||
5268 | (defsubst ebnf-shape-value (sym alist) | |
5269 | (or (cdr (assq sym alist)) 0)) | |
5270 | ||
5271 | ||
5272 | (defsubst ebnf-boolean (value) | |
5273 | (if value "true" "false")) | |
5274 | ||
5275 | ||
5276 | (defun ebnf-begin-file () | |
5277 | (ps-flush-output) | |
9a529312 | 5278 | (with-current-buffer ps-spool-buffer |
984ae001 GM |
5279 | (goto-char (point-min)) |
5280 | (and (search-forward "%%Creator: " nil t) | |
5281 | (not (search-forward "& ebnf2ps v" | |
5282 | (save-excursion (end-of-line) (point)) | |
5283 | t)) | |
5284 | (progn | |
5285 | ;; adjust creator comment | |
5286 | (end-of-line) | |
3ced5caa | 5287 | ;; (backward-char) |
984ae001 GM |
5288 | (insert " & ebnf2ps v" ebnf-version) |
5289 | ;; insert ebnf settings & engine | |
5290 | (goto-char (point-max)) | |
0b5ecd6d | 5291 | (search-backward "\n%%EndProlog\n") |
984ae001 GM |
5292 | (ebnf-insert-ebnf-prologue) |
5293 | (ps-output "\n"))))) | |
5294 | ||
5295 | ||
5296 | (defun ebnf-eps-finish-and-write (buffer filename) | |
1ede99a8 | 5297 | (when (buffer-modified-p buffer) |
9a529312 | 5298 | (with-current-buffer buffer |
3ced5caa | 5299 | (ebnf-eps-header-footer-set filename) |
1ede99a8 VJL |
5300 | (setq ebnf-eps-upper-x (max ebnf-eps-upper-x ebnf-eps-max-width) |
5301 | ebnf-eps-upper-y (if (zerop ebnf-eps-upper-y) | |
5302 | ebnf-eps-max-height | |
5303 | (+ ebnf-eps-upper-y | |
5304 | ebnf-production-vertical-space | |
5305 | ebnf-eps-max-height))) | |
5306 | ;; prologue | |
5307 | (goto-char (point-min)) | |
5308 | (insert | |
5309 | "%!PS-Adobe-3.0 EPSF-3.0" | |
5310 | "\n%%BoundingBox: 0 0 " | |
5311 | (format "%d %d" (1+ ebnf-eps-upper-x) (1+ ebnf-eps-upper-y)) | |
5312 | "\n%%Title: " filename | |
5313 | "\n%%CreationDate: " (format-time-string "%T %b %d %Y") | |
5314 | "\n%%Creator: " (user-full-name) " (using ebnf2ps v" ebnf-version ")" | |
5315 | "\n%%DocumentNeededResources: font " | |
5316 | (or ebnf-fonts-required | |
5317 | (setq ebnf-fonts-required | |
5318 | (mapconcat 'identity | |
5319 | (ps-remove-duplicates | |
5320 | (mapcar 'ebnf-font-name-select | |
5321 | (list ebnf-production-font | |
5322 | ebnf-terminal-font | |
5323 | ebnf-non-terminal-font | |
5324 | ebnf-special-font | |
5325 | ebnf-except-font | |
3ced5caa VJL |
5326 | ebnf-repeat-font |
5327 | ebnf-eps-header-font | |
5328 | ebnf-eps-footer-font))) | |
1ede99a8 VJL |
5329 | "\n%%+ font "))) |
5330 | "\n%%Pages: 0\n%%EndComments\n\n%%BeginProlog\n" | |
5331 | ebnf-eps-prologue) | |
5332 | (ebnf-insert-ebnf-prologue) | |
5333 | (insert ebnf-eps-begin | |
5334 | "\n0 " (ebnf-format-float | |
5335 | (- ebnf-eps-upper-y (* ebnf-font-height-P 0.7))) | |
5336 | " #ebnf2ps#begin\n") | |
5337 | ;; epilogue | |
5338 | (goto-char (point-max)) | |
5339 | (insert ebnf-eps-end) | |
5340 | ;; write file | |
5341 | (message "Saving...") | |
5342 | (setq filename (expand-file-name filename)) | |
5343 | (let ((coding-system-for-write 'raw-text-unix)) | |
5344 | (write-region (point-min) (point-max) filename)) | |
5345 | (message "Wrote %s" filename)))) | |
984ae001 GM |
5346 | |
5347 | ||
5348 | (defun ebnf-insert-ebnf-prologue () | |
5349 | (insert | |
5350 | (or ebnf-settings | |
5351 | (setq ebnf-settings | |
5352 | (concat | |
5353 | "\n\n% === begin EBNF settings\n\n" | |
3ced5caa VJL |
5354 | (format "/Header %s def\n" |
5355 | (or ebnf-eps-header-comment "()")) | |
5356 | (format "/Footer %s def\n" | |
5357 | (or ebnf-eps-footer-comment "()")) | |
5358 | ;; header | |
5359 | (format "/ShowHeader %s def\n" | |
5360 | (ebnf-boolean | |
5361 | (ebnf-eps-header-footer-p ebnf-eps-header))) | |
5362 | (format "/fH %s /%s DefFont\n" | |
5363 | (ebnf-format-float | |
5364 | (ebnf-font-size ebnf-eps-header-font)) | |
5365 | (ebnf-font-name-select ebnf-eps-header-font)) | |
5366 | (ebnf-format-color "/ForegroundH %s def %% %s\n" | |
5367 | (ebnf-font-foreground ebnf-eps-header-font) | |
5368 | "Black") | |
5369 | (ebnf-format-color "/BackgroundH %s def %% %s\n" | |
5370 | (ebnf-font-background ebnf-eps-header-font) | |
5371 | "White") | |
5372 | (format "/EffectH %d def\n" | |
5373 | (ebnf-font-attributes ebnf-eps-header-font)) | |
5374 | ;; footer | |
5375 | (format "/ShowFooter %s def\n" | |
5376 | (ebnf-boolean | |
5377 | (ebnf-eps-header-footer-p ebnf-eps-footer))) | |
5378 | (format "/fF %s /%s DefFont\n" | |
5379 | (ebnf-format-float | |
5380 | (ebnf-font-size ebnf-eps-footer-font)) | |
5381 | (ebnf-font-name-select ebnf-eps-footer-font)) | |
5382 | (ebnf-format-color "/ForegroundF %s def %% %s\n" | |
5383 | (ebnf-font-foreground ebnf-eps-footer-font) | |
5384 | "Black") | |
5385 | (ebnf-format-color "/BackgroundF %s def %% %s\n" | |
5386 | (ebnf-font-background ebnf-eps-footer-font) | |
5387 | "White") | |
5388 | (format "/EffectF %d def\n" | |
5389 | (ebnf-font-attributes ebnf-eps-footer-font)) | |
984ae001 GM |
5390 | ;; production |
5391 | (format "/fP %s /%s DefFont\n" | |
5392 | (ebnf-format-float (ebnf-font-size ebnf-production-font)) | |
5393 | (ebnf-font-name-select ebnf-production-font)) | |
5394 | (ebnf-format-color "/ForegroundP %s def %% %s\n" | |
5395 | (ebnf-font-foreground ebnf-production-font) | |
5396 | "Black") | |
5397 | (ebnf-format-color "/BackgroundP %s def %% %s\n" | |
5398 | (ebnf-font-background ebnf-production-font) | |
5399 | "White") | |
5400 | (format "/EffectP %d def\n" | |
5401 | (ebnf-font-attributes ebnf-production-font)) | |
5402 | ;; terminal | |
5403 | (format "/fT %s /%s DefFont\n" | |
5404 | (ebnf-format-float (ebnf-font-size ebnf-terminal-font)) | |
5405 | (ebnf-font-name-select ebnf-terminal-font)) | |
5406 | (ebnf-format-color "/ForegroundT %s def %% %s\n" | |
5407 | (ebnf-font-foreground ebnf-terminal-font) | |
5408 | "Black") | |
5409 | (ebnf-format-color "/BackgroundT %s def %% %s\n" | |
5410 | (ebnf-font-background ebnf-terminal-font) | |
5411 | "White") | |
5412 | (format "/EffectT %d def\n" | |
5413 | (ebnf-font-attributes ebnf-terminal-font)) | |
5414 | (format "/BorderWidthT %s def\n" | |
5415 | (ebnf-format-float ebnf-terminal-border-width)) | |
5416 | (ebnf-format-color "/BorderColorT %s def %% %s\n" | |
5417 | ebnf-terminal-border-color | |
5418 | "Black") | |
5419 | (format "/ShapeT %d def\n" | |
5420 | (ebnf-shape-value ebnf-terminal-shape | |
5421 | ebnf-terminal-shape-alist)) | |
5422 | (format "/ShadowT %s def\n" | |
5423 | (ebnf-boolean ebnf-terminal-shadow)) | |
5424 | ;; non-terminal | |
5425 | (format "/fNT %s /%s DefFont\n" | |
5426 | (ebnf-format-float | |
5427 | (ebnf-font-size ebnf-non-terminal-font)) | |
5428 | (ebnf-font-name-select ebnf-non-terminal-font)) | |
5429 | (ebnf-format-color "/ForegroundNT %s def %% %s\n" | |
5430 | (ebnf-font-foreground ebnf-non-terminal-font) | |
5431 | "Black") | |
5432 | (ebnf-format-color "/BackgroundNT %s def %% %s\n" | |
5433 | (ebnf-font-background ebnf-non-terminal-font) | |
5434 | "White") | |
5435 | (format "/EffectNT %d def\n" | |
5436 | (ebnf-font-attributes ebnf-non-terminal-font)) | |
5437 | (format "/BorderWidthNT %s def\n" | |
5438 | (ebnf-format-float ebnf-non-terminal-border-width)) | |
5439 | (ebnf-format-color "/BorderColorNT %s def %% %s\n" | |
5440 | ebnf-non-terminal-border-color | |
5441 | "Black") | |
5442 | (format "/ShapeNT %d def\n" | |
5443 | (ebnf-shape-value ebnf-non-terminal-shape | |
5444 | ebnf-terminal-shape-alist)) | |
5445 | (format "/ShadowNT %s def\n" | |
5446 | (ebnf-boolean ebnf-non-terminal-shadow)) | |
5447 | ;; special | |
5448 | (format "/fS %s /%s DefFont\n" | |
5449 | (ebnf-format-float (ebnf-font-size ebnf-special-font)) | |
5450 | (ebnf-font-name-select ebnf-special-font)) | |
5451 | (ebnf-format-color "/ForegroundS %s def %% %s\n" | |
5452 | (ebnf-font-foreground ebnf-special-font) | |
5453 | "Black") | |
5454 | (ebnf-format-color "/BackgroundS %s def %% %s\n" | |
5455 | (ebnf-font-background ebnf-special-font) | |
5456 | "Gray95") | |
5457 | (format "/EffectS %d def\n" | |
5458 | (ebnf-font-attributes ebnf-special-font)) | |
5459 | (format "/BorderWidthS %s def\n" | |
5460 | (ebnf-format-float ebnf-special-border-width)) | |
5461 | (ebnf-format-color "/BorderColorS %s def %% %s\n" | |
5462 | ebnf-special-border-color | |
5463 | "Black") | |
5464 | (format "/ShapeS %d def\n" | |
5465 | (ebnf-shape-value ebnf-special-shape | |
5466 | ebnf-terminal-shape-alist)) | |
5467 | (format "/ShadowS %s def\n" | |
5468 | (ebnf-boolean ebnf-special-shadow)) | |
5469 | ;; except | |
5470 | (format "/fE %s /%s DefFont\n" | |
5471 | (ebnf-format-float (ebnf-font-size ebnf-except-font)) | |
5472 | (ebnf-font-name-select ebnf-except-font)) | |
5473 | (ebnf-format-color "/ForegroundE %s def %% %s\n" | |
5474 | (ebnf-font-foreground ebnf-except-font) | |
5475 | "Black") | |
5476 | (ebnf-format-color "/BackgroundE %s def %% %s\n" | |
5477 | (ebnf-font-background ebnf-except-font) | |
5478 | "Gray90") | |
5479 | (format "/EffectE %d def\n" | |
5480 | (ebnf-font-attributes ebnf-except-font)) | |
5481 | (format "/BorderWidthE %s def\n" | |
5482 | (ebnf-format-float ebnf-except-border-width)) | |
5483 | (ebnf-format-color "/BorderColorE %s def %% %s\n" | |
5484 | ebnf-except-border-color | |
5485 | "Black") | |
5486 | (format "/ShapeE %d def\n" | |
5487 | (ebnf-shape-value ebnf-except-shape | |
5488 | ebnf-terminal-shape-alist)) | |
5489 | (format "/ShadowE %s def\n" | |
5490 | (ebnf-boolean ebnf-except-shadow)) | |
5491 | ;; repeat | |
5492 | (format "/fR %s /%s DefFont\n" | |
5493 | (ebnf-format-float (ebnf-font-size ebnf-repeat-font)) | |
5494 | (ebnf-font-name-select ebnf-repeat-font)) | |
5495 | (ebnf-format-color "/ForegroundR %s def %% %s\n" | |
5496 | (ebnf-font-foreground ebnf-repeat-font) | |
5497 | "Black") | |
5498 | (ebnf-format-color "/BackgroundR %s def %% %s\n" | |
5499 | (ebnf-font-background ebnf-repeat-font) | |
5500 | "Gray85") | |
5501 | (format "/EffectR %d def\n" | |
5502 | (ebnf-font-attributes ebnf-repeat-font)) | |
5503 | (format "/BorderWidthR %s def\n" | |
5504 | (ebnf-format-float ebnf-repeat-border-width)) | |
5505 | (ebnf-format-color "/BorderColorR %s def %% %s\n" | |
5506 | ebnf-repeat-border-color | |
5507 | "Black") | |
5508 | (format "/ShapeR %d def\n" | |
5509 | (ebnf-shape-value ebnf-repeat-shape | |
5510 | ebnf-terminal-shape-alist)) | |
5511 | (format "/ShadowR %s def\n" | |
5512 | (ebnf-boolean ebnf-repeat-shadow)) | |
5513 | ;; miscellaneous | |
ed0aa46c VJL |
5514 | (format "/ExtraWidth %s def\n" |
5515 | (ebnf-format-float ebnf-arrow-extra-width)) | |
5516 | (format "/ArrowScale %s def\n" | |
5517 | (ebnf-format-float ebnf-arrow-scale)) | |
984ae001 GM |
5518 | (format "/DefaultWidth %s def\n" |
5519 | (ebnf-format-float ebnf-default-width)) | |
5520 | (format "/LineWidth %s def\n" | |
5521 | (ebnf-format-float ebnf-line-width)) | |
5522 | (ebnf-format-color "/LineColor %s def %% %s\n" | |
5523 | ebnf-line-color | |
5524 | "Black") | |
5525 | (format "/ArrowShape %d def\n" | |
5526 | (ebnf-shape-value ebnf-arrow-shape | |
5527 | ebnf-arrow-shape-alist)) | |
5528 | (format "/ChartShape %d def\n" | |
5529 | (ebnf-shape-value ebnf-chart-shape | |
5530 | ebnf-terminal-shape-alist)) | |
5531 | (format "/UserArrow{%s}def\n" | |
bf061ba6 GM |
5532 | (let ((arrow (eval ebnf-user-arrow))) |
5533 | (if (stringp arrow) | |
5534 | arrow | |
5535 | ""))) | |
984ae001 GM |
5536 | "\n% === end EBNF settings\n\n" |
5537 | (and ebnf-debug-ps ebnf-debug)))) | |
5538 | ebnf-prologue)) | |
5539 | ||
984ae001 GM |
5540 | \f |
5541 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
5542 | ;; Adjusting dimensions | |
5543 | ||
5544 | ||
5545 | (defun ebnf-dimensions (tree) | |
3ced5caa | 5546 | (ebnf-log "(ebnf-dimensions tree)") |
984ae001 GM |
5547 | (let ((ebnf-total (length tree)) |
5548 | (ebnf-nprod 0)) | |
a6d6a87a | 5549 | (mapc 'ebnf-production-dimension tree)) |
984ae001 GM |
5550 | tree) |
5551 | ||
5552 | ||
5553 | ;; [empty width-fun dim-fun entry height width] | |
5554 | ;;(defun ebnf-empty-dimension (empty) | |
5555 | ;; ) | |
5556 | ||
5557 | ||
5558 | ;; [production width-fun dim-fun entry height width name production action] | |
5559 | (defun ebnf-production-dimension (production) | |
3ced5caa | 5560 | (ebnf-log "(ebnf-production-dimension production)") |
984ae001 GM |
5561 | (ebnf-message-info "Calculating dimensions") |
5562 | (ebnf-node-dimension-func (ebnf-node-production production)) | |
5563 | (let* ((prod (ebnf-node-production production)) | |
ac4780a1 VJL |
5564 | (height (+ (if ebnf-production-name-p |
5565 | ebnf-font-height-P | |
5566 | 0.0) | |
5567 | ebnf-line-width ebnf-line-width | |
984ae001 GM |
5568 | ebnf-basic-height |
5569 | (ebnf-node-height prod)))) | |
5570 | (ebnf-node-entry production height) | |
5571 | (ebnf-node-height production height) | |
5572 | (ebnf-node-width production (+ (ebnf-node-width prod) | |
ac4780a1 | 5573 | ebnf-line-width |
3ced5caa VJL |
5574 | ebnf-horizontal-space |
5575 | ebnf-basic-width-extra))) | |
5576 | (ebnf-log " production name : %S" (ebnf-node-name production)) | |
5577 | (ebnf-log " production entry : %7.3f" (ebnf-node-entry production)) | |
5578 | (ebnf-log " production height : %7.3f" (ebnf-node-height production)) | |
5579 | (ebnf-log " production width : %7.3f" (ebnf-node-width production))) | |
984ae001 GM |
5580 | |
5581 | ||
5582 | ;; [terminal width-fun dim-fun entry height width name] | |
5583 | (defun ebnf-terminal-dimension (terminal) | |
3ced5caa | 5584 | (ebnf-log "(ebnf-terminal-dimension terminal)") |
984ae001 GM |
5585 | (ebnf-terminal-dimension1 terminal |
5586 | ebnf-font-height-T | |
5587 | ebnf-font-width-T | |
5588 | ebnf-space-T)) | |
5589 | ||
5590 | ||
5591 | ;; [non-terminal width-fun dim-fun entry height width name] | |
5592 | (defun ebnf-non-terminal-dimension (non-terminal) | |
3ced5caa | 5593 | (ebnf-log "(ebnf-non-terminal-dimension non-terminal)") |
984ae001 GM |
5594 | (ebnf-terminal-dimension1 non-terminal |
5595 | ebnf-font-height-NT | |
5596 | ebnf-font-width-NT | |
5597 | ebnf-space-NT)) | |
5598 | ||
5599 | ||
5600 | ;; [special width-fun dim-fun entry height width name] | |
5601 | (defun ebnf-special-dimension (special) | |
3ced5caa | 5602 | (ebnf-log "(ebnf-special-dimension special)") |
984ae001 GM |
5603 | (ebnf-terminal-dimension1 special |
5604 | ebnf-font-height-S | |
5605 | ebnf-font-width-S | |
5606 | ebnf-space-S)) | |
5607 | ||
5608 | ||
5609 | (defun ebnf-terminal-dimension1 (node font-height font-width space) | |
5610 | (let ((height (+ space font-height space)) | |
5611 | (len (length (ebnf-node-name node)))) | |
5612 | (ebnf-node-entry node (* height 0.5)) | |
5613 | (ebnf-node-height node height) | |
3ced5caa VJL |
5614 | (ebnf-node-width node (+ ebnf-basic-width |
5615 | ebnf-arrow-extra-width | |
5616 | space | |
984ae001 | 5617 | (* len font-width) |
3ced5caa VJL |
5618 | space |
5619 | ebnf-basic-width))) | |
5620 | (ebnf-log " name : %S" (ebnf-node-name node)) | |
5621 | (ebnf-log " entry : %7.3f" (ebnf-node-entry node)) | |
5622 | (ebnf-log " height : %7.3f" (ebnf-node-height node)) | |
5623 | (ebnf-log " width : %7.3f" (ebnf-node-width node))) | |
984ae001 GM |
5624 | |
5625 | ||
5626 | (defconst ebnf-null-vector (vector t t t 0.0 0.0 0.0)) | |
5627 | ||
5628 | ||
5629 | ;; [repeat width-fun dim-fun entry height width times element] | |
5630 | (defun ebnf-repeat-dimension (repeat) | |
3ced5caa | 5631 | (ebnf-log "(ebnf-repeat-dimension repeat)") |
984ae001 GM |
5632 | (let ((times (ebnf-node-name repeat)) |
5633 | (element (ebnf-node-separator repeat))) | |
5634 | (if element | |
5635 | (ebnf-node-dimension-func element) | |
5636 | (setq element ebnf-null-vector)) | |
5637 | (ebnf-node-entry repeat (+ (ebnf-node-entry element) | |
5638 | ebnf-space-R)) | |
5639 | (ebnf-node-height repeat (+ (max (ebnf-node-height element) | |
5640 | ebnf-font-height-S) | |
5641 | ebnf-space-R ebnf-space-R)) | |
5642 | (ebnf-node-width repeat (+ (ebnf-node-width element) | |
ed0aa46c | 5643 | ebnf-arrow-extra-width |
984ae001 GM |
5644 | ebnf-space-R ebnf-space-R ebnf-space-R |
5645 | ebnf-horizontal-space | |
3ced5caa VJL |
5646 | (* (length times) ebnf-font-width-R)))) |
5647 | (ebnf-log " repeat entry : %7.3f" (ebnf-node-entry repeat)) | |
5648 | (ebnf-log " repeat height : %7.3f" (ebnf-node-height repeat)) | |
5649 | (ebnf-log " repeat width : %7.3f" (ebnf-node-width repeat))) | |
984ae001 GM |
5650 | |
5651 | ||
5652 | ;; [except width-fun dim-fun entry height width element element] | |
5653 | (defun ebnf-except-dimension (except) | |
3ced5caa | 5654 | (ebnf-log "(ebnf-except-dimension except)") |
984ae001 GM |
5655 | (let ((factor (ebnf-node-list except)) |
5656 | (element (ebnf-node-separator except))) | |
5657 | (ebnf-node-dimension-func factor) | |
5658 | (if element | |
5659 | (ebnf-node-dimension-func element) | |
5660 | (setq element ebnf-null-vector)) | |
5661 | (ebnf-node-entry except (+ (max (ebnf-node-entry factor) | |
5662 | (ebnf-node-entry element)) | |
5663 | ebnf-space-E)) | |
5664 | (ebnf-node-height except (+ (max (ebnf-node-height factor) | |
5665 | (ebnf-node-height element)) | |
5666 | ebnf-space-E ebnf-space-E)) | |
5667 | (ebnf-node-width except (+ (ebnf-node-width factor) | |
5668 | (ebnf-node-width element) | |
ed0aa46c | 5669 | ebnf-arrow-extra-width |
984ae001 GM |
5670 | ebnf-space-E ebnf-space-E |
5671 | ebnf-space-E ebnf-space-E | |
5672 | ebnf-font-width-E | |
3ced5caa VJL |
5673 | ebnf-horizontal-space))) |
5674 | (ebnf-log " except entry : %7.3f" (ebnf-node-entry except)) | |
5675 | (ebnf-log " except height : %7.3f" (ebnf-node-height except)) | |
5676 | (ebnf-log " except width : %7.3f" (ebnf-node-width except))) | |
984ae001 GM |
5677 | |
5678 | ||
5679 | ;; [alternative width-fun dim-fun entry height width list] | |
5680 | (defun ebnf-alternative-dimension (alternative) | |
3ced5caa | 5681 | (ebnf-log "(ebnf-alternative-dimension alternative)") |
984ae001 GM |
5682 | (let ((body (ebnf-node-list alternative)) |
5683 | (lis (ebnf-node-list alternative))) | |
5684 | (while lis | |
5685 | (ebnf-node-dimension-func (car lis)) | |
5686 | (setq lis (cdr lis))) | |
5687 | (let ((height 0.0) | |
5688 | (width 0.0) | |
5689 | (alt body) | |
5690 | (tail (car (last body))) | |
5691 | (entry (ebnf-node-entry (car body))) | |
5692 | node) | |
5693 | (while alt | |
5694 | (setq node (car alt) | |
5695 | alt (cdr alt) | |
5696 | height (+ (ebnf-node-height node) height) | |
5697 | width (max (ebnf-node-width node) width))) | |
5698 | (ebnf-adjust-width body width) | |
5699 | (setq height (+ height (* (1- (length body)) ebnf-vertical-space))) | |
5700 | (ebnf-node-entry alternative (+ entry | |
5701 | (ebnf-entry | |
5702 | (- height entry | |
5703 | (- (ebnf-node-height tail) | |
5704 | (ebnf-node-entry tail)))))) | |
5705 | (ebnf-node-height alternative height) | |
3ced5caa VJL |
5706 | (ebnf-node-width alternative (+ width |
5707 | ebnf-horizontal-space | |
5708 | ebnf-basic-width-extra)) | |
5709 | (ebnf-node-list alternative body))) | |
5710 | (ebnf-log " alternative entry : %7.3f" (ebnf-node-entry alternative)) | |
5711 | (ebnf-log " alternative height : %7.3f" (ebnf-node-height alternative)) | |
5712 | (ebnf-log " alternative width : %7.3f" (ebnf-node-width alternative))) | |
984ae001 GM |
5713 | |
5714 | ||
5715 | ;; [optional width-fun dim-fun entry height width element] | |
5716 | (defun ebnf-optional-dimension (optional) | |
3ced5caa | 5717 | (ebnf-log "(ebnf-optional-dimension optional)") |
984ae001 GM |
5718 | (let ((body (ebnf-node-list optional))) |
5719 | (ebnf-node-dimension-func body) | |
5720 | (ebnf-node-entry optional (ebnf-node-entry body)) | |
5721 | (ebnf-node-height optional (+ (ebnf-node-height body) | |
5722 | ebnf-vertical-space)) | |
5723 | (ebnf-node-width optional (+ (ebnf-node-width body) | |
3ced5caa VJL |
5724 | ebnf-horizontal-space))) |
5725 | (ebnf-log " optional entry : %7.3f" (ebnf-node-entry optional)) | |
5726 | (ebnf-log " optional height : %7.3f" (ebnf-node-height optional)) | |
5727 | (ebnf-log " optional width : %7.3f" (ebnf-node-width optional))) | |
984ae001 GM |
5728 | |
5729 | ||
5730 | ;; [one-or-more width-fun dim-fun entry height width element separator] | |
5731 | (defun ebnf-one-or-more-dimension (or-more) | |
3ced5caa | 5732 | (ebnf-log "(ebnf-one-or-more-dimension or-more)") |
984ae001 GM |
5733 | (let ((list-part (ebnf-node-list or-more)) |
5734 | (sep-part (ebnf-node-separator or-more))) | |
5735 | (ebnf-node-dimension-func list-part) | |
5736 | (and sep-part | |
5737 | (ebnf-node-dimension-func sep-part)) | |
5738 | (let ((height (+ (if sep-part | |
5739 | (ebnf-node-height sep-part) | |
3ced5caa | 5740 | ebnf-basic-empty-height) |
984ae001 GM |
5741 | ebnf-vertical-space |
5742 | (ebnf-node-height list-part))) | |
5743 | (width (max (if sep-part | |
5744 | (ebnf-node-width sep-part) | |
5745 | 0.0) | |
5746 | (ebnf-node-width list-part)))) | |
5747 | (when sep-part | |
5748 | (ebnf-adjust-width list-part width) | |
5749 | (ebnf-adjust-width sep-part width)) | |
3ced5caa VJL |
5750 | (ebnf-node-entry or-more (+ (- height |
5751 | (ebnf-node-height list-part)) | |
984ae001 GM |
5752 | (ebnf-node-entry list-part))) |
5753 | (ebnf-node-height or-more height) | |
3ced5caa VJL |
5754 | (ebnf-node-width or-more (+ width |
5755 | ebnf-horizontal-space | |
5756 | ebnf-basic-width-extra)))) | |
5757 | (ebnf-log " one-or-more entry : %7.3f" (ebnf-node-entry or-more)) | |
5758 | (ebnf-log " one-or-more height : %7.3f" (ebnf-node-height or-more)) | |
5759 | (ebnf-log " one-or-more width : %7.3f" (ebnf-node-width or-more))) | |
984ae001 GM |
5760 | |
5761 | ||
5762 | ;; [zero-or-more width-fun dim-fun entry height width element separator] | |
5763 | (defun ebnf-zero-or-more-dimension (or-more) | |
3ced5caa | 5764 | (ebnf-log "(ebnf-zero-or-more-dimension or-more)") |
984ae001 GM |
5765 | (let ((list-part (ebnf-node-list or-more)) |
5766 | (sep-part (ebnf-node-separator or-more))) | |
5767 | (ebnf-node-dimension-func list-part) | |
5768 | (and sep-part | |
5769 | (ebnf-node-dimension-func sep-part)) | |
5770 | (let ((height (+ (if sep-part | |
5771 | (ebnf-node-height sep-part) | |
3ced5caa | 5772 | ebnf-basic-empty-height) |
984ae001 GM |
5773 | ebnf-vertical-space |
5774 | (ebnf-node-height list-part) | |
5775 | ebnf-vertical-space)) | |
5776 | (width (max (if sep-part | |
5777 | (ebnf-node-width sep-part) | |
5778 | 0.0) | |
5779 | (ebnf-node-width list-part)))) | |
5780 | (when sep-part | |
5781 | (ebnf-adjust-width list-part width) | |
5782 | (ebnf-adjust-width sep-part width)) | |
5783 | (ebnf-node-entry or-more height) | |
5784 | (ebnf-node-height or-more height) | |
3ced5caa VJL |
5785 | (ebnf-node-width or-more (+ width |
5786 | ebnf-horizontal-space | |
5787 | ebnf-basic-width-extra)))) | |
5788 | (ebnf-log " zero-or-more entry : %7.3f" (ebnf-node-entry or-more)) | |
5789 | (ebnf-log " zero-or-more height : %7.3f" (ebnf-node-height or-more)) | |
5790 | (ebnf-log " zero-or-more width : %7.3f" (ebnf-node-width or-more))) | |
984ae001 GM |
5791 | |
5792 | ||
5793 | ;; [sequence width-fun dim-fun entry height width list] | |
5794 | (defun ebnf-sequence-dimension (sequence) | |
3ced5caa | 5795 | (ebnf-log "(ebnf-sequence-dimension sequence)") |
984ae001 GM |
5796 | (let ((above 0.0) |
5797 | (below 0.0) | |
5798 | (width 0.0) | |
5799 | (lis (ebnf-node-list sequence)) | |
5800 | entry node) | |
5801 | (while lis | |
5802 | (setq node (car lis) | |
5803 | lis (cdr lis)) | |
5804 | (ebnf-node-dimension-func node) | |
5805 | (setq entry (ebnf-node-entry node) | |
5806 | above (max above entry) | |
5807 | below (max below (- (ebnf-node-height node) entry)) | |
5808 | width (+ width (ebnf-node-width node)))) | |
5809 | (ebnf-node-entry sequence above) | |
5810 | (ebnf-node-height sequence (+ above below)) | |
3ced5caa VJL |
5811 | (ebnf-node-width sequence width)) |
5812 | (ebnf-log " sequence entry : %7.3f" (ebnf-node-entry sequence)) | |
5813 | (ebnf-log " sequence height : %7.3f" (ebnf-node-height sequence)) | |
5814 | (ebnf-log " sequence width : %7.3f" (ebnf-node-width sequence))) | |
984ae001 GM |
5815 | |
5816 | \f | |
5817 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
5818 | ;; Adjusting width | |
5819 | ||
5820 | ||
5821 | (defun ebnf-adjust-width (node width) | |
5822 | (cond | |
5823 | ((listp node) | |
5824 | (prog1 | |
5825 | node | |
5826 | (while node | |
5827 | (setcar node (ebnf-adjust-width (car node) width)) | |
5828 | (setq node (cdr node))))) | |
5829 | ((vectorp node) | |
5830 | (cond | |
5831 | ;; nothing to be done | |
5832 | ((= width (ebnf-node-width node)) | |
5833 | node) | |
5834 | ;; left justify term | |
5835 | ((eq ebnf-justify-sequence 'left) | |
5836 | (ebnf-adjust-empty node width nil)) | |
5837 | ;; right justify terms | |
5838 | ((eq ebnf-justify-sequence 'right) | |
5839 | (ebnf-adjust-empty node width t)) | |
5840 | ;; centralize terms | |
5841 | (t | |
5842 | (ebnf-node-width-func node width) | |
5843 | (ebnf-node-width node width) | |
5844 | node) | |
5845 | )) | |
5846 | (t | |
5847 | node) | |
5848 | )) | |
5849 | ||
5850 | ||
5851 | (defun ebnf-adjust-empty (node width last-p) | |
5852 | (if (eq (ebnf-node-kind node) 'ebnf-generate-empty) | |
5853 | (progn | |
5854 | (ebnf-node-width node width) | |
5855 | node) | |
5856 | (let ((empty (ebnf-make-empty (- width (ebnf-node-width node))))) | |
5857 | (ebnf-make-dup-sequence node | |
5858 | (if last-p | |
5859 | (list empty node) | |
5860 | (list node empty)))))) | |
5861 | ||
5862 | ||
5863 | ;; [terminal width-fun dim-fun entry height width name] | |
5864 | ;; [non-terminal width-fun dim-fun entry height width name] | |
5865 | ;; [empty width-fun dim-fun entry height width] | |
5866 | ;; [special width-fun dim-fun entry height width name] | |
5867 | ;; [repeat width-fun dim-fun entry height width times element] | |
5868 | ;; [except width-fun dim-fun entry height width element element] | |
5869 | ;;(defun ebnf-terminal-width (terminal width) | |
5870 | ;; ) | |
5871 | ||
5872 | ||
5873 | ;; [alternative width-fun dim-fun entry height width list] | |
5874 | ;; [optional width-fun dim-fun entry height width element] | |
5875 | (defun ebnf-alternative-width (alternative width) | |
5876 | (ebnf-adjust-width (ebnf-node-list alternative) | |
5877 | (- width ebnf-horizontal-space))) | |
5878 | ||
5879 | ||
5880 | ;; [one-or-more width-fun dim-fun entry height width element separator] | |
5881 | ;; [zero-or-more width-fun dim-fun entry height width element separator] | |
ac4780a1 | 5882 | (defun ebnf-element-width (or-more width) |
984ae001 GM |
5883 | (setq width (- width ebnf-horizontal-space)) |
5884 | (ebnf-node-list or-more | |
5885 | (ebnf-justify-list or-more | |
5886 | (ebnf-node-list or-more) | |
5887 | width)) | |
5888 | (ebnf-node-separator or-more | |
5889 | (ebnf-justify-list or-more | |
5890 | (ebnf-node-separator or-more) | |
5891 | width))) | |
5892 | ||
5893 | ||
5894 | ;; [sequence width-fun dim-fun entry height width list] | |
5895 | (defun ebnf-sequence-width (sequence width) | |
5896 | (ebnf-node-list sequence | |
b685181e GM |
5897 | (ebnf-justify-list sequence |
5898 | (ebnf-node-list sequence) | |
5899 | width))) | |
984ae001 GM |
5900 | |
5901 | ||
5902 | (defun ebnf-justify-list (node seq width) | |
5903 | (let ((seq-width (ebnf-node-width node))) | |
5904 | (if (= width seq-width) | |
5905 | seq | |
5906 | (cond | |
5907 | ;; left justify terms | |
5908 | ((eq ebnf-justify-sequence 'left) | |
5909 | (ebnf-justify node seq seq-width width t)) | |
5910 | ;; right justify terms | |
5911 | ((eq ebnf-justify-sequence 'right) | |
5912 | (ebnf-justify node seq seq-width width nil)) | |
ac4780a1 VJL |
5913 | ;; centralize terms -- element |
5914 | ((vectorp seq) | |
5915 | (ebnf-adjust-width seq width)) | |
5916 | ;; centralize terms -- list | |
984ae001 GM |
5917 | (t |
5918 | (let ((the-width (/ (- width seq-width) (length seq))) | |
5919 | (lis seq)) | |
5920 | (while lis | |
5921 | (ebnf-adjust-width (car lis) | |
5922 | (+ (ebnf-node-width (car lis)) | |
5923 | the-width)) | |
5924 | (setq lis (cdr lis))) | |
5925 | seq)) | |
5926 | )))) | |
5927 | ||
5928 | ||
5929 | (defun ebnf-justify (node seq seq-width width last-p) | |
5930 | (let ((term (car (if last-p (last seq) seq)))) | |
5931 | (cond | |
5932 | ;; adjust empty term | |
5933 | ((eq (ebnf-node-kind term) 'ebnf-generate-empty) | |
5934 | (ebnf-node-width term (+ (- width seq-width) | |
5935 | (ebnf-node-width term))) | |
5936 | seq) | |
5937 | ;; insert empty at end ==> left justify | |
5938 | (last-p | |
5939 | (nconc seq | |
5940 | (list (ebnf-make-empty (- width seq-width))))) | |
5941 | ;; insert empty at beginning ==> right justify | |
5942 | (t | |
5943 | (cons (ebnf-make-empty (- width seq-width)) | |
5944 | seq)) | |
5945 | ))) | |
5946 | ||
5947 | \f | |
5948 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
5949 | ;; Functions used by parsers | |
5950 | ||
5951 | ||
5952 | (defun ebnf-eps-add-context (name) | |
5953 | (let ((filename (ebnf-eps-filename name))) | |
5954 | (if (member filename ebnf-eps-context) | |
5955 | (error "Try to open an already opened EPS file: %s" filename) | |
3ced5caa VJL |
5956 | (setq ebnf-eps-context (cons filename ebnf-eps-context))) |
5957 | (ebnf-eps-header-footer-file filename))) | |
984ae001 GM |
5958 | |
5959 | ||
5960 | (defun ebnf-eps-remove-context (name) | |
5961 | (let ((filename (ebnf-eps-filename name))) | |
5962 | (if (member filename ebnf-eps-context) | |
5963 | (setq ebnf-eps-context (delete filename ebnf-eps-context)) | |
5964 | (error "Try to close a not opened EPS file: %s" filename)))) | |
5965 | ||
5966 | ||
5967 | (defun ebnf-eps-add-production (header) | |
3ced5caa VJL |
5968 | (when ebnf-eps-executing |
5969 | (if ebnf-eps-context | |
5970 | (let ((prod (assoc header ebnf-eps-production-list))) | |
5971 | (if prod | |
5972 | (setcdr prod (ebnf-dup-list | |
5973 | (append ebnf-eps-context (cdr prod)))) | |
5974 | (setq ebnf-eps-production-list | |
5975 | (cons (cons header (ebnf-dup-list ebnf-eps-context)) | |
5976 | ebnf-eps-production-list)))) | |
5977 | (ebnf-eps-header-footer-file (ebnf-eps-filename header))))) | |
984ae001 GM |
5978 | |
5979 | ||
5980 | (defun ebnf-dup-list (old) | |
5981 | (let (new) | |
5982 | (while old | |
5983 | (setq new (cons (car old) new) | |
5984 | old (cdr old))) | |
5985 | (nreverse new))) | |
5986 | ||
5987 | ||
5988 | (defun ebnf-buffer-substring (chars) | |
5989 | (buffer-substring-no-properties | |
5990 | (point) | |
5991 | (progn | |
5992 | (skip-chars-forward chars ebnf-limit) | |
5993 | (point)))) | |
5994 | ||
5995 | ||
6a5275dc GM |
5996 | ;; replace the range "\240-\377" (see `ebnf-range-regexp'). |
5997 | (defconst ebnf-8-bit-chars (ebnf-range-regexp "" ?\240 ?\377)) | |
5268b442 GM |
5998 | |
5999 | ||
984ae001 GM |
6000 | (defun ebnf-string (chars eos-char kind) |
6001 | (forward-char) | |
6002 | (buffer-substring-no-properties | |
6003 | (point) | |
6004 | (progn | |
5268b442 GM |
6005 | ;;(skip-chars-forward (concat chars "\240-\377") ebnf-limit) |
6006 | (skip-chars-forward (concat chars ebnf-8-bit-chars) ebnf-limit) | |
984ae001 | 6007 | (if (or (eobp) (/= (following-char) eos-char)) |
eac9c0ef | 6008 | (error "Invalid %s: missing `%c'" kind eos-char) |
984ae001 GM |
6009 | (forward-char) |
6010 | (1- (point)))))) | |
6011 | ||
6012 | ||
6013 | (defun ebnf-get-string () | |
6014 | (forward-char) | |
6015 | (buffer-substring-no-properties (point) (ebnf-end-of-string))) | |
6016 | ||
6017 | ||
6018 | (defun ebnf-end-of-string () | |
6019 | (let ((n 1)) | |
6020 | (while (> (logand n 1) 0) | |
6021 | (skip-chars-forward "^\"" ebnf-limit) | |
6022 | (setq n (- (skip-chars-backward "\\\\"))) | |
6023 | (goto-char (+ (point) n 1)))) | |
6024 | (if (= (preceding-char) ?\") | |
6025 | (1- (point)) | |
e8af40ee | 6026 | (error "Missing `\"'"))) |
984ae001 GM |
6027 | |
6028 | ||
6029 | (defun ebnf-trim-right (str) | |
6030 | (let* ((len (1- (length str))) | |
6031 | (index len)) | |
3ced5caa VJL |
6032 | ;; to keep compatibility with Emacs 20 & 21: |
6033 | ;; DO NOT REPLACE `?\ ' BY `?\s' | |
6034 | (while (and (> index 0) (= (aref str index) ?\ )) | |
984ae001 GM |
6035 | (setq index (1- index))) |
6036 | (if (= index len) | |
6037 | str | |
6038 | (substring str 0 (1+ index))))) | |
6039 | ||
6040 | \f | |
6041 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
6042 | ;; Vector creation | |
6043 | ||
6044 | ||
6045 | (defun ebnf-make-empty (&optional width) | |
3ced5caa VJL |
6046 | (vector 'ebnf-generate-empty ; 0 generator |
6047 | 'ignore ; 1 width fun | |
6048 | 'ignore ; 2 dimension fun | |
6049 | 0.0 ; 3 entry | |
6050 | 0.0 ; 4 height | |
6051 | (or width ebnf-horizontal-space))) ; 5 width | |
984ae001 GM |
6052 | |
6053 | ||
6054 | (defun ebnf-make-terminal (name) | |
6055 | (ebnf-make-terminal1 name | |
6056 | 'ebnf-generate-terminal | |
6057 | 'ebnf-terminal-dimension)) | |
6058 | ||
6059 | ||
6060 | (defun ebnf-make-non-terminal (name) | |
6061 | (ebnf-make-terminal1 name | |
6062 | 'ebnf-generate-non-terminal | |
6063 | 'ebnf-non-terminal-dimension)) | |
6064 | ||
6065 | ||
6066 | (defun ebnf-make-special (name) | |
6067 | (ebnf-make-terminal1 name | |
6068 | 'ebnf-generate-special | |
6069 | 'ebnf-special-dimension)) | |
6070 | ||
6071 | ||
6072 | (defun ebnf-make-terminal1 (name gen-func dim-func) | |
3ced5caa VJL |
6073 | (vector gen-func ; 0 generatore |
6074 | 'ignore ; 1 width fun | |
6075 | dim-func ; 2 dimension fun | |
6076 | 0.0 ; 3 entry | |
6077 | 0.0 ; 4 height | |
6078 | 0.0 ; 5 width | |
6079 | (let ((len (length name))) ; 6 name | |
ac4780a1 VJL |
6080 | (cond ((> len 3) name) |
6081 | ((= len 3) (concat name " ")) | |
6082 | ((= len 2) (concat " " name " ")) | |
6083 | ((= len 1) (concat " " name " ")) | |
6084 | (t " "))) | |
3ced5caa | 6085 | ebnf-default-p)) ; 7 is default? |
984ae001 GM |
6086 | |
6087 | ||
6088 | (defun ebnf-make-one-or-more (list-part &optional sep-part) | |
6089 | (ebnf-make-or-more1 'ebnf-generate-one-or-more | |
6090 | 'ebnf-one-or-more-dimension | |
6091 | list-part | |
6092 | sep-part)) | |
6093 | ||
6094 | ||
6095 | (defun ebnf-make-zero-or-more (list-part &optional sep-part) | |
6096 | (ebnf-make-or-more1 'ebnf-generate-zero-or-more | |
6097 | 'ebnf-zero-or-more-dimension | |
6098 | list-part | |
6099 | sep-part)) | |
6100 | ||
6101 | ||
6102 | (defun ebnf-make-or-more1 (gen-func dim-func list-part sep-part) | |
3ced5caa VJL |
6103 | (vector gen-func ; 0 generator |
6104 | 'ebnf-element-width ; 1 width fun | |
6105 | dim-func ; 2 dimension fun | |
6106 | 0.0 ; 3 entry | |
6107 | 0.0 ; 4 height | |
6108 | 0.0 ; 5 width | |
6109 | (if (listp list-part) ; 6 element | |
984ae001 GM |
6110 | (ebnf-make-sequence list-part) |
6111 | list-part) | |
3ced5caa | 6112 | (if (and sep-part (listp sep-part)) ; 7 separator |
984ae001 GM |
6113 | (ebnf-make-sequence sep-part) |
6114 | sep-part))) | |
6115 | ||
6116 | ||
6117 | (defun ebnf-make-production (name prod action) | |
3ced5caa VJL |
6118 | (vector 'ebnf-generate-production ; 0 generator |
6119 | 'ignore ; 1 width fun | |
6120 | 'ebnf-production-dimension ; 2 dimension fun | |
6121 | 0.0 ; 3 entry | |
6122 | 0.0 ; 4 height | |
6123 | 0.0 ; 5 width | |
6124 | name ; 6 production name | |
6125 | prod ; 7 production body | |
6126 | action)) ; 8 production action | |
984ae001 GM |
6127 | |
6128 | ||
6129 | (defun ebnf-make-alternative (body) | |
3ced5caa VJL |
6130 | (vector 'ebnf-generate-alternative ; 0 generator |
6131 | 'ebnf-alternative-width ; 1 width fun | |
6132 | 'ebnf-alternative-dimension ; 2 dimension fun | |
6133 | 0.0 ; 3 entry | |
6134 | 0.0 ; 4 height | |
6135 | 0.0 ; 5 width | |
6136 | body)) ; 6 alternative list | |
984ae001 GM |
6137 | |
6138 | ||
6139 | (defun ebnf-make-optional (body) | |
3ced5caa VJL |
6140 | (vector 'ebnf-generate-optional ; 0 generator |
6141 | 'ebnf-alternative-width ; 1 width fun | |
6142 | 'ebnf-optional-dimension ; 2 dimension fun | |
6143 | 0.0 ; 3 entry | |
6144 | 0.0 ; 4 height | |
6145 | 0.0 ; 5 width | |
6146 | body)) ; 6 optional element | |
984ae001 GM |
6147 | |
6148 | ||
6149 | (defun ebnf-make-except (factor exception) | |
3ced5caa VJL |
6150 | (vector 'ebnf-generate-except ; 0 generator |
6151 | 'ignore ; 1 width fun | |
6152 | 'ebnf-except-dimension ; 2 dimension fun | |
6153 | 0.0 ; 3 entry | |
6154 | 0.0 ; 4 height | |
6155 | 0.0 ; 5 width | |
6156 | factor ; 6 base element | |
6157 | exception)) ; 7 exception element | |
984ae001 GM |
6158 | |
6159 | ||
ac4780a1 | 6160 | (defun ebnf-make-repeat (times primary &optional upper) |
3ced5caa VJL |
6161 | (vector 'ebnf-generate-repeat ; 0 generator |
6162 | 'ignore ; 1 width fun | |
6163 | 'ebnf-repeat-dimension ; 2 dimension fun | |
6164 | 0.0 ; 3 entry | |
6165 | 0.0 ; 4 height | |
6166 | 0.0 ; 5 width | |
6167 | ; 6 times | |
ac4780a1 VJL |
6168 | (cond ((and times upper) ; L * U, L * L |
6169 | (if (string= times upper) | |
6170 | (if (string= times "") | |
6171 | " * " | |
6172 | times) | |
6173 | (concat times " * " upper))) | |
6174 | (times ; L * | |
6175 | (concat times " *")) | |
6176 | (upper ; * U | |
6177 | (concat "* " upper)) | |
6178 | (t ; * | |
6179 | " * ")) | |
3ced5caa | 6180 | primary)) ; 7 element |
984ae001 GM |
6181 | |
6182 | ||
6183 | (defun ebnf-make-sequence (seq) | |
3ced5caa VJL |
6184 | (vector 'ebnf-generate-sequence ; 0 generator |
6185 | 'ebnf-sequence-width ; 1 width fun | |
6186 | 'ebnf-sequence-dimension ; 2 dimension fun | |
6187 | 0.0 ; 3 entry | |
6188 | 0.0 ; 4 height | |
6189 | 0.0 ; 5 width | |
6190 | seq)) ; 6 sequence | |
984ae001 GM |
6191 | |
6192 | ||
6193 | (defun ebnf-make-dup-sequence (node seq) | |
3ced5caa VJL |
6194 | (vector 'ebnf-generate-sequence ; 0 generator |
6195 | 'ebnf-sequence-width ; 1 width fun | |
6196 | 'ebnf-sequence-dimension ; 2 dimension fun | |
6197 | (ebnf-node-entry node) ; 3 entry | |
6198 | (ebnf-node-height node) ; 4 height | |
6199 | (ebnf-node-width node) ; 5 width | |
6200 | seq)) ; 6 sequence | |
984ae001 GM |
6201 | |
6202 | \f | |
6203 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
6204 | ;; Optimizers used by parsers | |
6205 | ||
6206 | ||
6207 | (defun ebnf-token-except (element exception) | |
6208 | (cons (prog1 | |
6209 | (car exception) | |
6210 | (setq exception (cdr exception))) | |
6211 | (and element ; EMPTY - A ==> EMPTY | |
6212 | (let ((kind (ebnf-node-kind element))) | |
6213 | (cond | |
6214 | ;; [ A ]- ==> A | |
6215 | ((and (null exception) | |
6216 | (eq kind 'ebnf-generate-optional)) | |
6217 | (ebnf-node-list element)) | |
6218 | ;; { A }- ==> { A }+ | |
6219 | ((and (null exception) | |
6220 | (eq kind 'ebnf-generate-zero-or-more)) | |
6221 | (ebnf-node-kind element 'ebnf-generate-one-or-more) | |
6222 | (ebnf-node-dimension-func element 'ebnf-one-or-more-dimension) | |
6223 | element) | |
6224 | ;; ( A | EMPTY )- ==> A | |
6225 | ;; ( A | B | EMPTY )- ==> A | B | |
6226 | ((and (null exception) | |
6227 | (eq kind 'ebnf-generate-alternative) | |
b685181e GM |
6228 | (eq (ebnf-node-kind |
6229 | (car (last (ebnf-node-list element)))) | |
984ae001 GM |
6230 | 'ebnf-generate-empty)) |
6231 | (let ((elt (ebnf-node-list element)) | |
6232 | bef) | |
6233 | (while (cdr elt) | |
6234 | (setq bef elt | |
6235 | elt (cdr elt))) | |
6236 | (if (null bef) | |
6237 | ;; this should not happen!!?! | |
6238 | (setq element (ebnf-make-empty | |
6239 | (ebnf-node-width element))) | |
6240 | (setcdr bef nil) | |
6241 | (setq elt (ebnf-node-list element)) | |
6242 | (and (= (length elt) 1) | |
6243 | (setq element (car elt)))) | |
6244 | element)) | |
6245 | ;; A - B | |
6246 | (t | |
6247 | (ebnf-make-except element exception)) | |
6248 | ))))) | |
6249 | ||
6250 | ||
ac4780a1 | 6251 | (defun ebnf-token-repeat (times repeat &optional upper) |
984ae001 GM |
6252 | (if (null (cdr repeat)) |
6253 | ;; n * EMPTY ==> EMPTY | |
6254 | repeat | |
6255 | ;; n * term | |
6256 | (cons (car repeat) | |
ac4780a1 | 6257 | (ebnf-make-repeat times (cdr repeat) upper)))) |
984ae001 GM |
6258 | |
6259 | ||
6260 | (defun ebnf-token-optional (body) | |
6261 | (let ((kind (ebnf-node-kind body))) | |
6262 | (cond | |
6263 | ;; [ EMPTY ] ==> EMPTY | |
6264 | ((eq kind 'ebnf-generate-empty) | |
6265 | nil) | |
6266 | ;; [ { A }* ] ==> { A }* | |
6267 | ((eq kind 'ebnf-generate-zero-or-more) | |
6268 | body) | |
6269 | ;; [ { A }+ ] ==> { A }* | |
6270 | ((eq kind 'ebnf-generate-one-or-more) | |
6271 | (ebnf-node-kind body 'ebnf-generate-zero-or-more) | |
6272 | body) | |
6273 | ;; [ A | B ] ==> A | B | EMPTY | |
6274 | ((eq kind 'ebnf-generate-alternative) | |
6275 | (ebnf-node-list body (nconc (ebnf-node-list body) | |
6276 | (list (ebnf-make-empty)))) | |
6277 | body) | |
6278 | ;; [ A ] | |
6279 | (t | |
6280 | (ebnf-make-optional body)) | |
6281 | ))) | |
6282 | ||
6283 | ||
6284 | (defun ebnf-token-alternative (body sequence) | |
6285 | (if (null body) | |
6286 | (if (cdr sequence) | |
3ced5caa | 6287 | ;; no alternative |
984ae001 | 6288 | sequence |
3ced5caa VJL |
6289 | ;; empty element |
6290 | (cons (car sequence) ; token | |
984ae001 | 6291 | (ebnf-make-empty))) |
3ced5caa | 6292 | (cons (car sequence) ; token |
984ae001 GM |
6293 | (let ((seq (cdr sequence))) |
6294 | (if (and (= (length body) 1) (null seq)) | |
3ced5caa | 6295 | ;; alternative with one element |
984ae001 | 6296 | (car body) |
3ced5caa | 6297 | ;; a real alternative |
984ae001 GM |
6298 | (ebnf-make-alternative (nreverse (if seq |
6299 | (cons seq body) | |
6300 | body)))))))) | |
6301 | ||
6411a60a VJL |
6302 | |
6303 | (defun ebnf-token-sequence (sequence) | |
6304 | (cond | |
6305 | ;; null sequence | |
6306 | ((null sequence) | |
6307 | (ebnf-make-empty)) | |
6308 | ;; sequence with only one element | |
6309 | ((= (length sequence) 1) | |
6310 | (car sequence)) | |
6311 | ;; a real sequence | |
6312 | (t | |
6313 | (ebnf-make-sequence (nreverse sequence))) | |
6314 | )) | |
6315 | ||
984ae001 GM |
6316 | \f |
6317 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
6318 | ;; Variables used by parsers | |
6319 | ||
6320 | ||
6321 | (defconst ebnf-comment-table | |
6322 | (let ((table (make-vector 256 nil))) | |
6323 | ;; Override special comment character: | |
6324 | (aset table ?< 'newline) | |
6325 | (aset table ?> 'keep-line) | |
6411a60a | 6326 | (aset table ?^ 'form-feed) |
984ae001 GM |
6327 | table) |
6328 | "Vector used to map characters to a special comment token.") | |
6329 | ||
6330 | \f | |
3ced5caa VJL |
6331 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
6332 | ;; Log message | |
6333 | ||
6334 | ||
6335 | (defun ebnf-log-header (format-str &rest args) | |
6336 | (when ebnf-log | |
6337 | (apply | |
6338 | 'ebnf-log | |
6339 | (concat | |
6340 | "\n\n===============================================================\n\n" | |
6341 | format-str) | |
6342 | args))) | |
6343 | ||
6344 | ||
6345 | (defun ebnf-log (format-str &rest args) | |
6346 | (when ebnf-log | |
9a529312 | 6347 | (with-current-buffer (get-buffer-create "*Ebnf2ps Log*") |
3ced5caa VJL |
6348 | (goto-char (point-max)) |
6349 | (insert (apply 'format format-str args) "\n")))) | |
6350 | ||
6351 | \f | |
984ae001 GM |
6352 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
6353 | ;; To make this file smaller, some commands go in a separate file. | |
6354 | ;; But autoload them here to make the separation invisible. | |
6355 | ||
ac4780a1 VJL |
6356 | (autoload 'ebnf-abn-parser "ebnf-abn" |
6357 | "ABNF parser.") | |
6358 | ||
6359 | (autoload 'ebnf-abn-initialize "ebnf-abn" | |
6360 | "Initialize ABNF token table.") | |
6361 | ||
984ae001 GM |
6362 | (autoload 'ebnf-bnf-parser "ebnf-bnf" |
6363 | "EBNF parser.") | |
6364 | ||
6365 | (autoload 'ebnf-bnf-initialize "ebnf-bnf" | |
6366 | "Initialize EBNF token table.") | |
6367 | ||
6368 | (autoload 'ebnf-iso-parser "ebnf-iso" | |
6369 | "ISO EBNF parser.") | |
6370 | ||
6371 | (autoload 'ebnf-iso-initialize "ebnf-iso" | |
6372 | "Initialize ISO EBNF token table.") | |
6373 | ||
6374 | (autoload 'ebnf-yac-parser "ebnf-yac" | |
6375 | "Yacc/Bison parser.") | |
6376 | ||
6377 | (autoload 'ebnf-yac-initialize "ebnf-yac" | |
6378 | "Initializations for Yacc/Bison parser.") | |
6379 | ||
6ca94f87 VJL |
6380 | (autoload 'ebnf-ebx-parser "ebnf-ebx" |
6381 | "EBNFX parser.") | |
6382 | ||
6383 | (autoload 'ebnf-ebx-initialize "ebnf-ebx" | |
6384 | "Initializations for EBNFX parser.") | |
6385 | ||
6411a60a VJL |
6386 | (autoload 'ebnf-dtd-parser "ebnf-dtd" |
6387 | "DTD parser.") | |
984ae001 | 6388 | |
6411a60a VJL |
6389 | (autoload 'ebnf-dtd-initialize "ebnf-dtd" |
6390 | "Initializations for DTD parser.") | |
984ae001 GM |
6391 | |
6392 | \f | |
6393 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
6394 | ||
6395 | ||
6396 | (provide 'ebnf2ps) | |
6397 | ||
cbee283d | 6398 | ;; arch-tag: 148bc8af-5398-468b-b922-eeb7afef3e4f |
984ae001 | 6399 | ;;; ebnf2ps.el ends here |