1 /* Declarations having to do with XEmacs syntax tables.
2 Copyright (C) 1985, 1992, 1993 Free Software Foundation, Inc.
4 This file is part of XEmacs.
6 XEmacs is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with XEmacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* Synched up with: FSF 19.28. */
23 #ifndef INCLUDED_syntax_h_
24 #define INCLUDED_syntax_h_
28 /* A syntax table is a type of char table.
30 The low 7 bits of the integer is a code, as follows. The 8th bit is
31 used as the prefix bit flag (see below).
33 The values in a syntax table are either integers or conses of
34 integers and chars. The lowest 7 bits of the integer are the syntax
35 class. If this is Sinherit, then the actual syntax value needs to
36 be retrieved from the standard syntax table.
38 Since the logic involved in finding the actual integer isn't very
39 complex, you'd think the time required to retrieve it is not a
40 factor. If you thought that, however, you'd be wrong, due to the
41 high number of times (many per character) that the syntax value is
42 accessed in functions such as scan_lists(). To speed this up,
43 we maintain a mirror syntax table that contains the actual
44 integers. We can do this successfully because syntax tables are
45 now an abstract type, where we control all access.
50 Swhitespace, /* whitespace character */
51 Spunct, /* random punctuation character */
52 Sword, /* word constituent */
53 Ssymbol, /* symbol constituent but not word constituent */
54 Sopen, /* a beginning delimiter */
55 Sclose, /* an ending delimiter */
56 Squote, /* a prefix character like Lisp ' */
57 Sstring, /* a string-grouping character like Lisp " */
58 Smath, /* delimiters like $ in TeX. */
59 Sescape, /* a character that begins a C-style escape */
60 Scharquote, /* a character that quotes the following character */
61 Scomment, /* a comment-starting character */
62 Sendcomment, /* a comment-ending character */
63 Sinherit, /* use the standard syntax table for this character */
64 Scomment_fence, /* Starts/ends comment which is delimited on the
65 other side by a char with the same syntaxcode. */
66 Sstring_fence, /* Starts/ends string which is delimited on the
67 other side by a char with the same syntaxcode. */
68 Smax /* Upper bound on codes that are meaningful */
71 enum syntaxcode charset_syntax (struct buffer *buf, Lisp_Object charset,
74 /* Return the syntax code for a particular character and mirror table. */
76 #define SYNTAX_CODE_UNSAFE(table, c) \
77 XINT (CHAR_TABLE_VALUE_UNSAFE (table, c))
79 INLINE_HEADER int SYNTAX_CODE (Lisp_Char_Table *table, Emchar c);
81 SYNTAX_CODE (Lisp_Char_Table *table, Emchar c)
83 return SYNTAX_CODE_UNSAFE (table, c);
86 #define SYNTAX_UNSAFE(table, c) \
87 ((enum syntaxcode) (SYNTAX_CODE_UNSAFE (table, c) & 0177))
89 #define SYNTAX_FROM_CODE(code) ((enum syntaxcode) ((code) & 0177))
90 #define SYNTAX(table, c) SYNTAX_FROM_CODE (SYNTAX_CODE (table, c))
92 INLINE_HEADER int WORD_SYNTAX_P (Lisp_Char_Table *table, Emchar c);
94 WORD_SYNTAX_P (Lisp_Char_Table *table, Emchar c)
96 return SYNTAX (table, c) == Sword;
99 /* OK, here's a graphic diagram of the format of the syntax values:
103 [ 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 ]
104 [ 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 ]
106 <-----> <-----> <-------------> <-------------> ^ <----------->
107 ELisp unused |comment bits | unused | syntax code
108 tag | | | | | | | | |
109 stuff | | | | | | | | |
111 | | | | | | | | `--> prefix flag
113 | | | | | | | `--> comment end style B, second char
114 | | | | | | `----> comment end style A, second char
115 | | | | | `------> comment end style B, first char
116 | | | | `--------> comment end style A, first char
117 | | | `----------> comment start style B, second char
118 | | `------------> comment start style A, second char
119 | `--------------> comment start style B, first char
120 `----------------> comment start style A, first char
122 In a 64-bit integer, there would be 32 more unused bits between
123 the tag and the comment bits.
125 Clearly, such a scheme will not work for Mule, because the matching
126 paren could be any character and as such requires 19 bits, which
129 Remember that under Mule we use char tables instead of vectors.
130 So what we do is use another char table for the matching paren
131 and store a pointer to it in the first char table. (This frees
132 code from having to worry about passing two tables around.)
136 /* The prefix flag bit for backward-prefix-chars is now put into bit 7. */
138 #define SYNTAX_PREFIX_UNSAFE(table, c) \
139 ((SYNTAX_CODE_UNSAFE (table, c) >> 7) & 1)
140 #define SYNTAX_PREFIX(table, c) \
141 ((SYNTAX_CODE (table, c) >> 7) & 1)
143 /* Bits 23-16 are used to implement up to two comment styles
144 in a single buffer. They have the following meanings:
146 1. first of a one or two character comment-start sequence of style a.
147 2. first of a one or two character comment-start sequence of style b.
148 3. second of a two-character comment-start sequence of style a.
149 4. second of a two-character comment-start sequence of style b.
150 5. first of a one or two character comment-end sequence of style a.
151 6. first of a one or two character comment-end sequence of style b.
152 7. second of a two-character comment-end sequence of style a.
153 8. second of a two-character comment-end sequence of style b.
155 From the internals manual:
157 Syntax codes are implemented as bitfields in an int. Bits 0-6 contain
158 the syntax code itself, bit 7 is a special prefix flag used for Lisp,
159 and bits 16-23 contain comment syntax flags. From the Lisp programmer's
160 point of view, there are 11 flags: 2 styles X 2 characters X @{start,
161 end@} flags for two-character comment delimiters, 2 style flags for
162 one-character comment delimiters, and the prefix flag.
164 Internally, however, the characters used in multi-character delimiters
165 will have non-comment-character syntax classes (@emph{e.g.}, the
166 @samp{/} in C's @samp{/}@samp{*} comment-start delimiter has ``punctuation''
167 \(here meaning ``operator-like'') class in C modes). Thus in a mixed
168 comment style, such as C++'s @samp{//} to end of line, is represented by
169 giving @samp{/} the ``punctuation'' class and the ``style b first
170 character of start sequence'' and ``style b second character of start
171 sequence'' flags. The fact that class is @emph{not} punctuation allows
172 the syntax scanner to recognize that this is a multi-character
173 delimiter. The @samp{newline} character is given (single-character)
174 ``comment-end'' @emph{class} and the ``style b first character of end
175 sequence'' @emph{flag}. The ``comment-end'' class allows the scanner to
176 determine that no second character is needed to terminate the comment.
179 #define SYNTAX_COMMENT_BITS(c) \
180 ((SYNTAX_CODE (mirrortab, c) >> 16) &0xff)
182 #define SYNTAX_FIRST_OF_START_A 0x80
183 #define SYNTAX_FIRST_OF_START_B 0x40
184 #define SYNTAX_SECOND_OF_START_A 0x20
185 #define SYNTAX_SECOND_OF_START_B 0x10
186 #define SYNTAX_FIRST_OF_END_A 0x08
187 #define SYNTAX_FIRST_OF_END_B 0x04
188 #define SYNTAX_SECOND_OF_END_A 0x02
189 #define SYNTAX_SECOND_OF_END_B 0x01
191 #define SYNTAX_COMMENT_STYLE_A 0xaa
192 #define SYNTAX_COMMENT_STYLE_B 0x55
193 #define SYNTAX_FIRST_CHAR_START 0xc0
194 #define SYNTAX_FIRST_CHAR_END 0x0c
195 #define SYNTAX_FIRST_CHAR 0xcc
196 #define SYNTAX_SECOND_CHAR_START 0x30
197 #define SYNTAX_SECOND_CHAR_END 0x03
198 #define SYNTAX_SECOND_CHAR 0x33
201 /* #### These are now more or less equivalent to
202 SYNTAX_COMMENT_MATCH_START ...*/
203 /* a and b must be first and second start chars for a common type */
204 #define SYNTAX_START_P(a, b) \
205 (((SYNTAX_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_START) >> 2) \
206 & (SYNTAX_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_START))
208 /* ... and SYNTAX_COMMENT_MATCH_END */
209 /* a and b must be first and second end chars for a common type */
210 #define SYNTAX_END_P(a, b) \
211 (((SYNTAX_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_END) >> 2) \
212 & (SYNTAX_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_END))
214 #define SYNTAX_STYLES_MATCH_START_P(a, b, mask) \
215 ((SYNTAX_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_START & (mask)) \
216 && (SYNTAX_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_START & (mask)))
218 #define SYNTAX_STYLES_MATCH_END_P(a, b, mask) \
219 ((SYNTAX_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_END & (mask)) \
220 && (SYNTAX_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_END & (mask)))
222 #define SYNTAX_STYLES_MATCH_1CHAR_P(a, mask) \
223 ((SYNTAX_COMMENT_BITS (a) & (mask)))
225 #define STYLE_FOUND_P(a, b, startp, style) \
226 ((SYNTAX_COMMENT_BITS (a) & \
227 ((startp) ? SYNTAX_FIRST_CHAR_START : \
228 SYNTAX_FIRST_CHAR_END) & (style)) \
229 && (SYNTAX_COMMENT_BITS (b) & \
230 ((startp) ? SYNTAX_SECOND_CHAR_START : \
231 SYNTAX_SECOND_CHAR_END) & (style)))
233 #define SYNTAX_COMMENT_MASK_START(a, b) \
234 ((STYLE_FOUND_P (a, b, 1, SYNTAX_COMMENT_STYLE_A) \
235 ? SYNTAX_COMMENT_STYLE_A \
236 : (STYLE_FOUND_P (a, b, 1, SYNTAX_COMMENT_STYLE_B) \
237 ? SYNTAX_COMMENT_STYLE_B \
240 #define SYNTAX_COMMENT_MASK_END(a, b) \
241 ((STYLE_FOUND_P (a, b, 0, SYNTAX_COMMENT_STYLE_A) \
242 ? SYNTAX_COMMENT_STYLE_A \
243 : (STYLE_FOUND_P (a, b, 0, SYNTAX_COMMENT_STYLE_B) \
244 ? SYNTAX_COMMENT_STYLE_B \
247 #define STYLE_FOUND_1CHAR_P(a, style) \
248 ((SYNTAX_COMMENT_BITS (a) & (style)))
250 #define SYNTAX_COMMENT_1CHAR_MASK(a) \
251 ((STYLE_FOUND_1CHAR_P (a, SYNTAX_COMMENT_STYLE_A) \
252 ? SYNTAX_COMMENT_STYLE_A \
253 : (STYLE_FOUND_1CHAR_P (a, SYNTAX_COMMENT_STYLE_B) \
254 ? SYNTAX_COMMENT_STYLE_B \
257 EXFUN (Fchar_syntax, 2);
258 EXFUN (Fforward_word, 2);
260 /* The standard syntax table is stored where it will automatically
261 be used in all new buffers. */
262 extern Lisp_Object Vstandard_syntax_table;
264 /* This array, indexed by a character, contains the syntax code which
265 that character signifies (as a char).
266 For example, (enum syntaxcode) syntax_spec_code['w'] is Sword. */
268 extern const unsigned char syntax_spec_code[0400];
270 /* Indexed by syntax code, give the letter that describes it. */
272 extern const unsigned char syntax_code_spec[];
274 Lisp_Object scan_lists (struct buffer *buf, Bufpos from, int count,
275 int depth, int sexpflag, int no_error);
276 int char_quoted (struct buffer *buf, Bufpos pos);
278 /* NOTE: This does not refer to the mirror table, but to the
279 syntax table itself. */
280 Lisp_Object syntax_match (Lisp_Object table, Emchar ch);
282 extern int no_quit_in_re_search;
283 extern struct buffer *regex_emacs_buffer;
285 /* Target text (string or buffer), used for syntax-table properties. */
286 extern Lisp_Object regex_match_object;
288 void update_syntax_table (Lisp_Char_Table *ct);
290 /* The syntax table cache */
293 The *-single-property-change versions turn out to be unbearably slow.
294 Do not enable them in a production or distribution version.
296 #define NEXT_SINGLE_PROPERTY_CHANGE 0
297 #define PREVIOUS_SINGLE_PROPERTY_CHANGE 0
299 /* Test instruments, used in macros below.
300 Define SYNTAX_CACHE_STATISTICS to enable them. */
301 /* #undef SYNTAX_CACHE_STATISTICS */
303 #ifdef SYNTAX_CACHE_STATISTICS
304 #define SYNTAX_CACHE_STATISTICS_REPORT_INTERVAL 100000
306 enum syntax_cache_statistics_functions {
307 scs_no_function = -1,
308 scs_find_context = 0,
309 scs_find_defun_start,
311 scs_Fforward_comment,
313 scs_Fbackward_prefix_characters,
314 scs_scan_sexps_forward,
315 scs_number_of_functions
318 /* keep this in synch with syntax.c */
319 extern char* syntax_cache_statistics_function_names[scs_number_of_functions];
321 struct syntax_cache_statistics {
322 /* inits + misses_hi + misses_lo + #HITS = total_updates */
330 double mean_length_on_miss;
331 enum syntax_cache_statistics_functions this_function;
332 int functions[scs_number_of_functions];
335 extern struct syntax_cache_statistics scs_statistics;
337 #define SCS_STATISTICS_SET_FUNCTION(fndx) scs_statistics.this_function = fndx
338 /* used in macros below */
339 #define SYNTAX_CACHE_STATISTICS_COUNT_INIT scs_statistics.inits++
343 #define SCS_STATISTICS_SET_FUNCTION(fndx)
344 #define SYNTAX_CACHE_STATISTICS_COUNT_INIT
346 #endif /* SYNTAX_CACHE_STATISTICS */
348 /* Theory of the syntax table cache
350 This cache cooperates with but is conceptually different from the
351 mirror table. The mirror table precomputes (and caches, if you like)
352 the syntax codes for characters in a given syntax table, taking into
353 account possible inheritance from a table given by a parent text object.
354 The syntax table cache checks for overriding tables defined by
357 This implementation defines the "subobjects" by _extent properties_.
358 We may restrict them to _text_ properties. There are two lookup
359 styles for the cache, "single code" and "full table". In the "single
360 code" style, a given syntax code, kept in the `syntax_code' member, is
361 applied to the entire range (#### check this). In the "full table"
362 style, a syntax table kept in the `current_syntax_table' member is
363 checked for each character in the range. If the flag `use_code' is
364 non-zero, the "single code" is used, otherwise the "full table".
366 The cache is valid for the range `[prev_change, next_change)' in the
367 text object (buffer or string) `object'.
369 If the current position is outside the range valid for the cache, the
370 cache is updated by checking for the text property `syntax-table'. If
371 present, its value is either a syntax code or a syntax table, and the
372 appropriate member and `use_code' are updated accordingly. If absent
373 or nil, the default syntax table from the `buffer' member is used. The
374 extent of the property is used to reinitialize the cache's validity
375 range. (We would like to improve this by checking the property value
376 against `old_prop', and if the same, extend the validity range of the
377 cache by the extent of the property.)
379 Note: the values Qt and Qnil for `object' are not supported in this
380 implementation. GNU Emacs uses them for reasons not yet (####) clear.
383 extern int lookup_syntax_properties;
387 int use_code; /* Whether to use syntax_code
388 or current_syntax_table. */
389 struct buffer* buffer; /* The buffer providing the default
390 syntax table to the cache. */
391 Lisp_Object object; /* The buffer or string the current
392 syntax cache applies to. */
393 int syntax_code; /* Syntax code of current char. */
394 Lisp_Object current_syntax_table; /* Syntax table for current pos. */
395 Lisp_Object old_prop; /* Syntax-table prop at prev pos. */
397 Bufpos next_change; /* Position of the next extent
399 Bufpos prev_change; /* Position of the previous
402 extern struct syntax_cache syntax_cache;
405 The macros below handle the internal structure of the cache.
406 ALWAYS USE THE MACROS TO MANIPULATE THE CACHE.
408 o Use the SETUP_SYNTAX_CACHE* macros to set the object and buffer members.
410 OBJECT is either a Lisp buffer or a Lisp string. BUFFER is a
411 pointer to struct buffer. If OBJECT is a buffer, it must refer to
412 BUFFER. If OBJECT is a string, then BUFFER will supply the default
413 syntax table when the `syntax-table' property is nil.
415 For convenience and backward compatibility, the values Qt and Qnil are
416 accepted for OBJECT. These are taken to refer to the current buffer,
417 and that substitution is made immediately. The value Qt is treated
418 specially in the *BYTE_TO_CHAR macros below. This appears (####) to
419 be a GNU kludge related to `enable-multibyte-characters' and was used
422 FROM is the starting character position in OBJECT.
423 COUNT is currently used only as a flag. If positive, we are proceeding
424 forward through OBJECT, otherwise in reverse.
426 o All other members are updated using the update_syntax_cache
427 function, normally wrapped in the UPDATE_SYNTAX_CACHE* macros.
430 void update_syntax_cache (int pos, int count);
432 /* in one example the high misses vastly outweigh the low ones
433 seems plausible, since we typically are moving forward through the buffer */
434 #define UPDATE_SYNTAX_CACHE_INTERNAL(pos, dir) \
435 ((lookup_syntax_properties && \
436 (pos >= syntax_cache.next_change || \
437 pos < syntax_cache.prev_change)) \
438 ? (update_syntax_cache ((pos), dir), 1) \
441 /* In the current implementation, all of the following are identical. */
442 /* Make syntax cache state good for CHARPOS, assuming it is
443 currently good for a position before CHARPOS. */
444 #define UPDATE_SYNTAX_CACHE_FORWARD(pos) UPDATE_SYNTAX_CACHE_INTERNAL(pos, 1)
446 /* Make syntax cache state good for CHARPOS, assuming it is
447 currently good for a position after CHARPOS. */
448 #define UPDATE_SYNTAX_CACHE_BACKWARD(pos) UPDATE_SYNTAX_CACHE_INTERNAL(pos, -1)
450 /* Make syntax cache state good for CHARPOS */
451 #define UPDATE_SYNTAX_CACHE(pos) UPDATE_SYNTAX_CACHE_INTERNAL(pos, 0)
453 #define SYNTAX_FROM_CACHE(table, c) \
454 SYNTAX_FROM_CODE (SYNTAX_CODE_FROM_CACHE (table, c))
456 #define SYNTAX_CODE_FROM_CACHE(table, c) \
457 ( syntax_cache.use_code \
458 ? syntax_cache.syntax_code \
459 : SYNTAX_CODE (XCHAR_TABLE (syntax_cache.current_syntax_table), \
463 /* Convert the byte offset BYTEPOS into a character position,
464 for the object recorded in syntax_cache with SETUP_SYNTAX_CACHE*.
466 The value is meant for use in the UPDATE_SYNTAX_CACHE... macros.
467 These macros do nothing when lookup_syntax_properties is 0,
468 so we return 0 in that case, for speed.
470 The default case does no conversion; this seems (####) to be an
471 evil hangover from GNU Emacs. */
472 #define SYNTAX_CACHE_OBJECT_BYTE_TO_CHAR(obj, buf, bytepos) \
473 (! lookup_syntax_properties \
476 ? bytecount_to_charcount (XSTRING_DATA (obj), bytepos) \
477 : (BUFFERP (obj) || NILP (obj)) \
478 ? bytind_to_bufpos (buf, bytepos + BI_BUF_BEGV (buf)) \
481 #define SYNTAX_CACHE_BYTE_TO_CHAR(bytepos) \
482 SYNTAX_CACHE_OBJECT_BYTE_TO_CHAR (syntax_cache.object, syntax_cache.buffer, \
485 #define SETUP_SYNTAX_CACHE(FROM, COUNT) \
486 SETUP_SYNTAX_CACHE_FOR_BUFFER (current_buffer, (FROM), (COUNT))
488 #define SETUP_SYNTAX_CACHE_FOR_BUFFER(BUFFER, FROM, COUNT) \
489 SETUP_SYNTAX_CACHE_FOR_OBJECT (Qnil, (BUFFER), (FROM), (COUNT))
491 #define SETUP_SYNTAX_CACHE_FOR_OBJECT(OBJECT, BUFFER, FROM, COUNT) \
493 syntax_cache.buffer = (BUFFER); \
494 syntax_cache.object = (OBJECT); \
495 if (NILP (syntax_cache.object)) \
497 XSETBUFFER (syntax_cache.object, syntax_cache.buffer); \
499 else if (EQ (syntax_cache.object, Qt)) \
501 XSETBUFFER (syntax_cache.object, syntax_cache.buffer); \
503 else if (STRINGP (syntax_cache.object)) \
507 else if (BUFFERP (syntax_cache.object)) \
509 syntax_cache.buffer = XBUFFER (syntax_cache.object); \
513 /* OBJECT must be buffer/string/t/nil */ \
516 syntax_cache.current_syntax_table \
517 = syntax_cache.buffer->mirror_syntax_table; \
518 syntax_cache.use_code = 0; \
519 if (lookup_syntax_properties) \
521 SYNTAX_CACHE_STATISTICS_COUNT_INIT; \
522 update_syntax_cache ((FROM) + ((COUNT) > 0 ? 0 : -1), (COUNT)); \
526 #define SYNTAX_CODE_PREFIX(c) \
529 #define SYNTAX_CODE_COMMENT_BITS(c) \
532 #define SYNTAX_CODES_START_P(a, b) \
533 (((SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_START) >> 2) \
534 & (SYNTAX_CODE_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_START))
536 #define SYNTAX_CODES_END_P(a, b) \
537 (((SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_END) >> 2) \
538 & (SYNTAX_CODE_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_END))
540 #define SYNTAX_CODES_COMMENT_MASK_START(a, b) \
541 (SYNTAX_CODES_MATCH_START_P (a, b, SYNTAX_COMMENT_STYLE_A) \
542 ? SYNTAX_COMMENT_STYLE_A \
543 : (SYNTAX_CODES_MATCH_START_P (a, b, SYNTAX_COMMENT_STYLE_B) \
544 ? SYNTAX_COMMENT_STYLE_B \
546 #define SYNTAX_CODES_COMMENT_MASK_END(a, b) \
547 (SYNTAX_CODES_MATCH_END_P (a, b, SYNTAX_COMMENT_STYLE_A) \
548 ? SYNTAX_COMMENT_STYLE_A \
549 : (SYNTAX_CODES_MATCH_END_P (a, b, SYNTAX_COMMENT_STYLE_B) \
550 ? SYNTAX_COMMENT_STYLE_B \
553 #define SYNTAX_CODE_START_FIRST_P(a) \
554 (SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_START)
556 #define SYNTAX_CODE_START_SECOND_P(a) \
557 (SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_SECOND_CHAR_START)
559 #define SYNTAX_CODE_END_FIRST_P(a) \
560 (SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_END)
562 #define SYNTAX_CODE_END_SECOND_P(a) \
563 (SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_SECOND_CHAR_END)
566 #define SYNTAX_CODES_MATCH_START_P(a, b, mask) \
567 ((SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_START & (mask)) \
568 && (SYNTAX_CODE_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_START & (mask)))
570 #define SYNTAX_CODES_MATCH_END_P(a, b, mask) \
571 ((SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_END & (mask)) \
572 && (SYNTAX_CODE_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_END & (mask)))
574 #define SYNTAX_CODE_MATCHES_1CHAR_P(a, mask) \
575 ((SYNTAX_CODE_COMMENT_BITS (a) & (mask)))
577 #define SYNTAX_CODE_COMMENT_1CHAR_MASK(a) \
578 ((SYNTAX_CODE_MATCHES_1CHAR_P (a, SYNTAX_COMMENT_STYLE_A) \
579 ? SYNTAX_COMMENT_STYLE_A \
580 : (SYNTAX_CODE_MATCHES_1CHAR_P (a, SYNTAX_COMMENT_STYLE_B) \
581 ? SYNTAX_COMMENT_STYLE_B \
585 /* These are the things that need to be #defined away to create a
586 no syntax-table property version. */
588 /* This should be entirely encapsulated in macros
589 #define update_syntax_cache(pos, count)
591 #define lookup_syntax_properties 0
593 #define SETUP_SYNTAX_CACHE(FROM, COUNT)
594 #define SETUP_SYNTAX_CACHE_FOR_BUFFER(BUFFER, FROM, COUNT)
595 #define SETUP_SYNTAX_CACHE_FOR_OBJECT(OBJECT, BUFFER, FROM, COUNT)
596 #define UPDATE_SYNTAX_CACHE_FORWARD(pos)
597 #define UPDATE_SYNTAX_CACHE_BACKWARD(pos)
598 #define UPDATE_SYNTAX_CACHE(pos)
600 #define SYNTAX_FROM_CACHE SYNTAX
601 #define SYNTAX_CODE_FROM_CACHE SYNTAX_CODE
603 #define SYNTAX_CACHE_BYTE_TO_CHAR(x) 0
605 /* cache statistics */
606 #define SCS_STATISTICS_SET_FUNCTION(fndx)
607 #define SYNTAX_CACHE_STATISTICS_COUNT_INIT
610 #endif /* INCLUDED_syntax_h_ */