1 /* Declarations having to do with XEmacs syntax tables.
2 Copyright (C) 1985, 1992, 1993 Free Software Foundation, Inc.
3 Copyright (C) 2001 MORIOKA Tomohiko
5 This file is part of XEmacs.
7 XEmacs is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 2, or (at your option) any
12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with XEmacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 /* Synched up with: FSF 19.28. */
24 #ifndef INCLUDED_syntax_h_
25 #define INCLUDED_syntax_h_
29 /* A syntax table is a type of char table.
31 The low 7 bits of the integer is a code, as follows. The 8th bit is
32 used as the prefix bit flag (see below).
34 The values in a syntax table are either integers or conses of
35 integers and chars. The lowest 7 bits of the integer are the syntax
36 class. If this is Sinherit, then the actual syntax value needs to
37 be retrieved from the standard syntax table.
39 Since the logic involved in finding the actual integer isn't very
40 complex, you'd think the time required to retrieve it is not a
41 factor. If you thought that, however, you'd be wrong, due to the
42 high number of times (many per character) that the syntax value is
43 accessed in functions such as scan_lists(). To speed this up,
44 we maintain a mirror syntax table that contains the actual
45 integers. We can do this successfully because syntax tables are
46 now an abstract type, where we control all access.
49 /* The standard syntax table is stored where it will automatically
50 be used in all new buffers. */
51 extern Lisp_Object Vstandard_syntax_table;
55 Swhitespace, /* whitespace character */
56 Spunct, /* random punctuation character */
57 Sword, /* word constituent */
58 Ssymbol, /* symbol constituent but not word constituent */
59 Sopen, /* a beginning delimiter */
60 Sclose, /* an ending delimiter */
61 Squote, /* a prefix character like Lisp ' */
62 Sstring, /* a string-grouping character like Lisp " */
63 Smath, /* delimiters like $ in TeX. */
64 Sescape, /* a character that begins a C-style escape */
65 Scharquote, /* a character that quotes the following character */
66 Scomment, /* a comment-starting character */
67 Sendcomment, /* a comment-ending character */
68 Sinherit, /* use the standard syntax table for this character */
69 Scomment_fence, /* Starts/ends comment which is delimited on the
70 other side by a char with the same syntaxcode. */
71 Sstring_fence, /* Starts/ends string which is delimited on the
72 other side by a char with the same syntaxcode. */
73 Smax /* Upper bound on codes that are meaningful */
76 enum syntaxcode charset_syntax (struct buffer *buf, Lisp_Object charset,
79 /* Return the syntax code for a particular character and mirror table. */
82 INLINE_HEADER int SYNTAX_CODE_UNSAFE (Lisp_Char_Table *table, Emchar c);
84 SYNTAX_CODE_UNSAFE (Lisp_Char_Table *table, Emchar c)
86 int code = CHAR_TABLE_VALUE_UNSAFE (table, c);
95 code = CHAR_TABLE_VALUE_UNSAFE (XCHAR_TABLE
96 (Vstandard_syntax_table), c);
105 #define SYNTAX_CODE_UNSAFE(table, c) \
106 XINT (CHAR_TABLE_VALUE_UNSAFE (table, c))
109 INLINE_HEADER int SYNTAX_CODE (Lisp_Char_Table *table, Emchar c);
111 SYNTAX_CODE (Lisp_Char_Table *table, Emchar c)
113 return SYNTAX_CODE_UNSAFE (table, c);
116 #define SYNTAX_UNSAFE(table, c) \
117 ((enum syntaxcode) (SYNTAX_CODE_UNSAFE (table, c) & 0177))
119 #define SYNTAX_FROM_CODE(code) ((enum syntaxcode) ((code) & 0177))
120 #define SYNTAX(table, c) SYNTAX_FROM_CODE (SYNTAX_CODE (table, c))
122 INLINE_HEADER int WORD_SYNTAX_P (Lisp_Char_Table *table, Emchar c);
124 WORD_SYNTAX_P (Lisp_Char_Table *table, Emchar c)
126 return SYNTAX (table, c) == Sword;
129 /* OK, here's a graphic diagram of the format of the syntax values:
133 [ 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 ]
134 [ 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 ]
136 <-----> <-----> <-------------> <-------------> ^ <----------->
137 ELisp unused |comment bits | unused | syntax code
138 tag | | | | | | | | |
139 stuff | | | | | | | | |
141 | | | | | | | | `--> prefix flag
143 | | | | | | | `--> comment end style B, second char
144 | | | | | | `----> comment end style A, second char
145 | | | | | `------> comment end style B, first char
146 | | | | `--------> comment end style A, first char
147 | | | `----------> comment start style B, second char
148 | | `------------> comment start style A, second char
149 | `--------------> comment start style B, first char
150 `----------------> comment start style A, first char
152 In a 64-bit integer, there would be 32 more unused bits between
153 the tag and the comment bits.
155 Clearly, such a scheme will not work for Mule, because the matching
156 paren could be any character and as such requires 19 bits, which
159 Remember that under Mule we use char tables instead of vectors.
160 So what we do is use another char table for the matching paren
161 and store a pointer to it in the first char table. (This frees
162 code from having to worry about passing two tables around.)
166 /* The prefix flag bit for backward-prefix-chars is now put into bit 7. */
168 #define SYNTAX_PREFIX_UNSAFE(table, c) \
169 ((SYNTAX_CODE_UNSAFE (table, c) >> 7) & 1)
170 #define SYNTAX_PREFIX(table, c) \
171 ((SYNTAX_CODE (table, c) >> 7) & 1)
173 /* Bits 23-16 are used to implement up to two comment styles
174 in a single buffer. They have the following meanings:
176 1. first of a one or two character comment-start sequence of style a.
177 2. first of a one or two character comment-start sequence of style b.
178 3. second of a two-character comment-start sequence of style a.
179 4. second of a two-character comment-start sequence of style b.
180 5. first of a one or two character comment-end sequence of style a.
181 6. first of a one or two character comment-end sequence of style b.
182 7. second of a two-character comment-end sequence of style a.
183 8. second of a two-character comment-end sequence of style b.
185 From the internals manual:
187 Syntax codes are implemented as bitfields in an int. Bits 0-6 contain
188 the syntax code itself, bit 7 is a special prefix flag used for Lisp,
189 and bits 16-23 contain comment syntax flags. From the Lisp programmer's
190 point of view, there are 11 flags: 2 styles X 2 characters X @{start,
191 end@} flags for two-character comment delimiters, 2 style flags for
192 one-character comment delimiters, and the prefix flag.
194 Internally, however, the characters used in multi-character delimiters
195 will have non-comment-character syntax classes (@emph{e.g.}, the
196 @samp{/} in C's @samp{/}@samp{*} comment-start delimiter has ``punctuation''
197 \(here meaning ``operator-like'') class in C modes). Thus in a mixed
198 comment style, such as C++'s @samp{//} to end of line, is represented by
199 giving @samp{/} the ``punctuation'' class and the ``style b first
200 character of start sequence'' and ``style b second character of start
201 sequence'' flags. The fact that class is @emph{not} punctuation allows
202 the syntax scanner to recognize that this is a multi-character
203 delimiter. The @samp{newline} character is given (single-character)
204 ``comment-end'' @emph{class} and the ``style b first character of end
205 sequence'' @emph{flag}. The ``comment-end'' class allows the scanner to
206 determine that no second character is needed to terminate the comment.
209 #define SYNTAX_COMMENT_BITS(c) \
210 ((SYNTAX_CODE (mirrortab, c) >> 16) &0xff)
212 #define SYNTAX_FIRST_OF_START_A 0x80
213 #define SYNTAX_FIRST_OF_START_B 0x40
214 #define SYNTAX_SECOND_OF_START_A 0x20
215 #define SYNTAX_SECOND_OF_START_B 0x10
216 #define SYNTAX_FIRST_OF_END_A 0x08
217 #define SYNTAX_FIRST_OF_END_B 0x04
218 #define SYNTAX_SECOND_OF_END_A 0x02
219 #define SYNTAX_SECOND_OF_END_B 0x01
221 #define SYNTAX_COMMENT_STYLE_A 0xaa
222 #define SYNTAX_COMMENT_STYLE_B 0x55
223 #define SYNTAX_FIRST_CHAR_START 0xc0
224 #define SYNTAX_FIRST_CHAR_END 0x0c
225 #define SYNTAX_FIRST_CHAR 0xcc
226 #define SYNTAX_SECOND_CHAR_START 0x30
227 #define SYNTAX_SECOND_CHAR_END 0x03
228 #define SYNTAX_SECOND_CHAR 0x33
231 /* #### These are now more or less equivalent to
232 SYNTAX_COMMENT_MATCH_START ...*/
233 /* a and b must be first and second start chars for a common type */
234 #define SYNTAX_START_P(a, b) \
235 (((SYNTAX_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_START) >> 2) \
236 & (SYNTAX_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_START))
238 /* ... and SYNTAX_COMMENT_MATCH_END */
239 /* a and b must be first and second end chars for a common type */
240 #define SYNTAX_END_P(a, b) \
241 (((SYNTAX_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_END) >> 2) \
242 & (SYNTAX_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_END))
244 #define SYNTAX_STYLES_MATCH_START_P(a, b, mask) \
245 ((SYNTAX_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_START & (mask)) \
246 && (SYNTAX_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_START & (mask)))
248 #define SYNTAX_STYLES_MATCH_END_P(a, b, mask) \
249 ((SYNTAX_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_END & (mask)) \
250 && (SYNTAX_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_END & (mask)))
252 #define SYNTAX_STYLES_MATCH_1CHAR_P(a, mask) \
253 ((SYNTAX_COMMENT_BITS (a) & (mask)))
255 #define STYLE_FOUND_P(a, b, startp, style) \
256 ((SYNTAX_COMMENT_BITS (a) & \
257 ((startp) ? SYNTAX_FIRST_CHAR_START : \
258 SYNTAX_FIRST_CHAR_END) & (style)) \
259 && (SYNTAX_COMMENT_BITS (b) & \
260 ((startp) ? SYNTAX_SECOND_CHAR_START : \
261 SYNTAX_SECOND_CHAR_END) & (style)))
263 #define SYNTAX_COMMENT_MASK_START(a, b) \
264 ((STYLE_FOUND_P (a, b, 1, SYNTAX_COMMENT_STYLE_A) \
265 ? SYNTAX_COMMENT_STYLE_A \
266 : (STYLE_FOUND_P (a, b, 1, SYNTAX_COMMENT_STYLE_B) \
267 ? SYNTAX_COMMENT_STYLE_B \
270 #define SYNTAX_COMMENT_MASK_END(a, b) \
271 ((STYLE_FOUND_P (a, b, 0, SYNTAX_COMMENT_STYLE_A) \
272 ? SYNTAX_COMMENT_STYLE_A \
273 : (STYLE_FOUND_P (a, b, 0, SYNTAX_COMMENT_STYLE_B) \
274 ? SYNTAX_COMMENT_STYLE_B \
277 #define STYLE_FOUND_1CHAR_P(a, style) \
278 ((SYNTAX_COMMENT_BITS (a) & (style)))
280 #define SYNTAX_COMMENT_1CHAR_MASK(a) \
281 ((STYLE_FOUND_1CHAR_P (a, SYNTAX_COMMENT_STYLE_A) \
282 ? SYNTAX_COMMENT_STYLE_A \
283 : (STYLE_FOUND_1CHAR_P (a, SYNTAX_COMMENT_STYLE_B) \
284 ? SYNTAX_COMMENT_STYLE_B \
287 EXFUN (Fchar_syntax, 2);
288 EXFUN (Fforward_word, 2);
290 /* This array, indexed by a character, contains the syntax code which
291 that character signifies (as a char).
292 For example, (enum syntaxcode) syntax_spec_code['w'] is Sword. */
294 extern const unsigned char syntax_spec_code[0400];
296 /* Indexed by syntax code, give the letter that describes it. */
298 extern const unsigned char syntax_code_spec[];
300 Lisp_Object scan_lists (struct buffer *buf, Bufpos from, int count,
301 int depth, int sexpflag, int no_error);
302 int char_quoted (struct buffer *buf, Bufpos pos);
304 /* NOTE: This does not refer to the mirror table, but to the
305 syntax table itself. */
306 Lisp_Object syntax_match (Lisp_Object table, Emchar ch);
308 extern int no_quit_in_re_search;
309 extern struct buffer *regex_emacs_buffer;
311 /* Target text (string or buffer), used for syntax-table properties. */
312 extern Lisp_Object regex_match_object;
315 void update_syntax_table (Lisp_Char_Table *ct);
318 /* The syntax table cache */
321 The *-single-property-change versions turn out to be unbearably slow.
322 Do not enable them in a production or distribution version.
324 #define NEXT_SINGLE_PROPERTY_CHANGE 0
325 #define PREVIOUS_SINGLE_PROPERTY_CHANGE 0
327 /* Test instruments, used in macros below.
328 Define SYNTAX_CACHE_STATISTICS to enable them. */
329 /* #undef SYNTAX_CACHE_STATISTICS */
331 #ifdef SYNTAX_CACHE_STATISTICS
332 #define SYNTAX_CACHE_STATISTICS_REPORT_INTERVAL 100000
334 enum syntax_cache_statistics_functions {
335 scs_no_function = -1,
336 scs_find_context = 0,
337 scs_find_defun_start,
339 scs_Fforward_comment,
341 scs_Fbackward_prefix_characters,
342 scs_scan_sexps_forward,
343 scs_number_of_functions
346 /* keep this in synch with syntax.c */
347 extern char* syntax_cache_statistics_function_names[scs_number_of_functions];
349 struct syntax_cache_statistics {
350 /* inits + misses_hi + misses_lo + #HITS = total_updates */
358 double mean_length_on_miss;
359 enum syntax_cache_statistics_functions this_function;
360 int functions[scs_number_of_functions];
363 extern struct syntax_cache_statistics scs_statistics;
365 #define SCS_STATISTICS_SET_FUNCTION(fndx) scs_statistics.this_function = fndx
366 /* used in macros below */
367 #define SYNTAX_CACHE_STATISTICS_COUNT_INIT scs_statistics.inits++
371 #define SCS_STATISTICS_SET_FUNCTION(fndx)
372 #define SYNTAX_CACHE_STATISTICS_COUNT_INIT
374 #endif /* SYNTAX_CACHE_STATISTICS */
376 /* Theory of the syntax table cache
378 This cache cooperates with but is conceptually different from the
379 mirror table. The mirror table precomputes (and caches, if you like)
380 the syntax codes for characters in a given syntax table, taking into
381 account possible inheritance from a table given by a parent text object.
382 The syntax table cache checks for overriding tables defined by
385 This implementation defines the "subobjects" by _extent properties_.
386 We may restrict them to _text_ properties. There are two lookup
387 styles for the cache, "single code" and "full table". In the "single
388 code" style, a given syntax code, kept in the `syntax_code' member, is
389 applied to the entire range (#### check this). In the "full table"
390 style, a syntax table kept in the `current_syntax_table' member is
391 checked for each character in the range. If the flag `use_code' is
392 non-zero, the "single code" is used, otherwise the "full table".
394 The cache is valid for the range `[prev_change, next_change)' in the
395 text object (buffer or string) `object'.
397 If the current position is outside the range valid for the cache, the
398 cache is updated by checking for the text property `syntax-table'. If
399 present, its value is either a syntax code or a syntax table, and the
400 appropriate member and `use_code' are updated accordingly. If absent
401 or nil, the default syntax table from the `buffer' member is used. The
402 extent of the property is used to reinitialize the cache's validity
403 range. (We would like to improve this by checking the property value
404 against `old_prop', and if the same, extend the validity range of the
405 cache by the extent of the property.)
407 Note: the values Qt and Qnil for `object' are not supported in this
408 implementation. GNU Emacs uses them for reasons not yet (####) clear.
411 extern int lookup_syntax_properties;
415 int use_code; /* Whether to use syntax_code
416 or current_syntax_table. */
417 struct buffer* buffer; /* The buffer providing the default
418 syntax table to the cache. */
419 Lisp_Object object; /* The buffer or string the current
420 syntax cache applies to. */
421 int syntax_code; /* Syntax code of current char. */
422 Lisp_Object current_syntax_table; /* Syntax table for current pos. */
423 Lisp_Object old_prop; /* Syntax-table prop at prev pos. */
425 Bufpos next_change; /* Position of the next extent
427 Bufpos prev_change; /* Position of the previous
430 extern struct syntax_cache syntax_cache;
433 The macros below handle the internal structure of the cache.
434 ALWAYS USE THE MACROS TO MANIPULATE THE CACHE.
436 o Use the SETUP_SYNTAX_CACHE* macros to set the object and buffer members.
438 OBJECT is either a Lisp buffer or a Lisp string. BUFFER is a
439 pointer to struct buffer. If OBJECT is a buffer, it must refer to
440 BUFFER. If OBJECT is a string, then BUFFER will supply the default
441 syntax table when the `syntax-table' property is nil.
443 For convenience and backward compatibility, the values Qt and Qnil are
444 accepted for OBJECT. These are taken to refer to the current buffer,
445 and that substitution is made immediately. The value Qt is treated
446 specially in the *BYTE_TO_CHAR macros below. This appears (####) to
447 be a GNU kludge related to `enable-multibyte-characters' and was used
450 FROM is the starting character position in OBJECT.
451 COUNT is currently used only as a flag. If positive, we are proceeding
452 forward through OBJECT, otherwise in reverse.
454 o All other members are updated using the update_syntax_cache
455 function, normally wrapped in the UPDATE_SYNTAX_CACHE* macros.
458 void update_syntax_cache (int pos, int count);
460 /* in one example the high misses vastly outweigh the low ones
461 seems plausible, since we typically are moving forward through the buffer */
462 #define UPDATE_SYNTAX_CACHE_INTERNAL(pos, dir) \
463 ((lookup_syntax_properties && \
464 (pos >= syntax_cache.next_change || \
465 pos < syntax_cache.prev_change)) \
466 ? (update_syntax_cache ((pos), dir), 1) \
469 /* In the current implementation, all of the following are identical. */
470 /* Make syntax cache state good for CHARPOS, assuming it is
471 currently good for a position before CHARPOS. */
472 #define UPDATE_SYNTAX_CACHE_FORWARD(pos) UPDATE_SYNTAX_CACHE_INTERNAL(pos, 1)
474 /* Make syntax cache state good for CHARPOS, assuming it is
475 currently good for a position after CHARPOS. */
476 #define UPDATE_SYNTAX_CACHE_BACKWARD(pos) UPDATE_SYNTAX_CACHE_INTERNAL(pos, -1)
478 /* Make syntax cache state good for CHARPOS */
479 #define UPDATE_SYNTAX_CACHE(pos) UPDATE_SYNTAX_CACHE_INTERNAL(pos, 0)
481 #define SYNTAX_FROM_CACHE(table, c) \
482 SYNTAX_FROM_CODE (SYNTAX_CODE_FROM_CACHE (table, c))
484 #define SYNTAX_CODE_FROM_CACHE(table, c) \
485 ( syntax_cache.use_code \
486 ? syntax_cache.syntax_code \
487 : SYNTAX_CODE (XCHAR_TABLE (syntax_cache.current_syntax_table), \
491 /* Convert the byte offset BYTEPOS into a character position,
492 for the object recorded in syntax_cache with SETUP_SYNTAX_CACHE*.
494 The value is meant for use in the UPDATE_SYNTAX_CACHE... macros.
495 These macros do nothing when lookup_syntax_properties is 0,
496 so we return 0 in that case, for speed.
498 The default case does no conversion; this seems (####) to be an
499 evil hangover from GNU Emacs. */
500 #define SYNTAX_CACHE_OBJECT_BYTE_TO_CHAR(obj, buf, bytepos) \
501 (! lookup_syntax_properties \
504 ? bytecount_to_charcount (XSTRING_DATA (obj), bytepos) \
505 : (BUFFERP (obj) || NILP (obj)) \
506 ? bytind_to_bufpos (buf, bytepos + BI_BUF_BEGV (buf)) \
509 #define SYNTAX_CACHE_BYTE_TO_CHAR(bytepos) \
510 SYNTAX_CACHE_OBJECT_BYTE_TO_CHAR (syntax_cache.object, syntax_cache.buffer, \
513 #define SETUP_SYNTAX_CACHE(FROM, COUNT) \
514 SETUP_SYNTAX_CACHE_FOR_BUFFER (current_buffer, (FROM), (COUNT))
516 #define SETUP_SYNTAX_CACHE_FOR_BUFFER(BUFFER, FROM, COUNT) \
517 SETUP_SYNTAX_CACHE_FOR_OBJECT (Qnil, (BUFFER), (FROM), (COUNT))
520 #define SETUP_SYNTAX_CACHE_FOR_OBJECT(OBJECT, BUFFER, FROM, COUNT) \
522 syntax_cache.buffer = (BUFFER); \
523 syntax_cache.object = (OBJECT); \
524 if (NILP (syntax_cache.object)) \
526 XSETBUFFER (syntax_cache.object, syntax_cache.buffer); \
528 else if (EQ (syntax_cache.object, Qt)) \
530 XSETBUFFER (syntax_cache.object, syntax_cache.buffer); \
532 else if (STRINGP (syntax_cache.object)) \
536 else if (BUFFERP (syntax_cache.object)) \
538 syntax_cache.buffer = XBUFFER (syntax_cache.object); \
542 /* OBJECT must be buffer/string/t/nil */ \
545 syntax_cache.current_syntax_table \
546 = syntax_cache.buffer->syntax_table; \
547 syntax_cache.use_code = 0; \
548 if (lookup_syntax_properties) \
550 SYNTAX_CACHE_STATISTICS_COUNT_INIT; \
551 update_syntax_cache ((FROM) + ((COUNT) > 0 ? 0 : -1), (COUNT)); \
555 #define SETUP_SYNTAX_CACHE_FOR_OBJECT(OBJECT, BUFFER, FROM, COUNT) \
557 syntax_cache.buffer = (BUFFER); \
558 syntax_cache.object = (OBJECT); \
559 if (NILP (syntax_cache.object)) \
561 XSETBUFFER (syntax_cache.object, syntax_cache.buffer); \
563 else if (EQ (syntax_cache.object, Qt)) \
565 XSETBUFFER (syntax_cache.object, syntax_cache.buffer); \
567 else if (STRINGP (syntax_cache.object)) \
571 else if (BUFFERP (syntax_cache.object)) \
573 syntax_cache.buffer = XBUFFER (syntax_cache.object); \
577 /* OBJECT must be buffer/string/t/nil */ \
580 syntax_cache.current_syntax_table \
581 = syntax_cache.buffer->mirror_syntax_table; \
582 syntax_cache.use_code = 0; \
583 if (lookup_syntax_properties) \
585 SYNTAX_CACHE_STATISTICS_COUNT_INIT; \
586 update_syntax_cache ((FROM) + ((COUNT) > 0 ? 0 : -1), (COUNT)); \
591 #define SYNTAX_CODE_PREFIX(c) \
594 #define SYNTAX_CODE_COMMENT_BITS(c) \
597 #define SYNTAX_CODES_START_P(a, b) \
598 (((SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_START) >> 2) \
599 & (SYNTAX_CODE_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_START))
601 #define SYNTAX_CODES_END_P(a, b) \
602 (((SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_END) >> 2) \
603 & (SYNTAX_CODE_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_END))
605 #define SYNTAX_CODES_COMMENT_MASK_START(a, b) \
606 (SYNTAX_CODES_MATCH_START_P (a, b, SYNTAX_COMMENT_STYLE_A) \
607 ? SYNTAX_COMMENT_STYLE_A \
608 : (SYNTAX_CODES_MATCH_START_P (a, b, SYNTAX_COMMENT_STYLE_B) \
609 ? SYNTAX_COMMENT_STYLE_B \
611 #define SYNTAX_CODES_COMMENT_MASK_END(a, b) \
612 (SYNTAX_CODES_MATCH_END_P (a, b, SYNTAX_COMMENT_STYLE_A) \
613 ? SYNTAX_COMMENT_STYLE_A \
614 : (SYNTAX_CODES_MATCH_END_P (a, b, SYNTAX_COMMENT_STYLE_B) \
615 ? SYNTAX_COMMENT_STYLE_B \
618 #define SYNTAX_CODE_START_FIRST_P(a) \
619 (SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_START)
621 #define SYNTAX_CODE_START_SECOND_P(a) \
622 (SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_SECOND_CHAR_START)
624 #define SYNTAX_CODE_END_FIRST_P(a) \
625 (SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_END)
627 #define SYNTAX_CODE_END_SECOND_P(a) \
628 (SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_SECOND_CHAR_END)
631 #define SYNTAX_CODES_MATCH_START_P(a, b, mask) \
632 ((SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_START & (mask)) \
633 && (SYNTAX_CODE_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_START & (mask)))
635 #define SYNTAX_CODES_MATCH_END_P(a, b, mask) \
636 ((SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_END & (mask)) \
637 && (SYNTAX_CODE_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_END & (mask)))
639 #define SYNTAX_CODE_MATCHES_1CHAR_P(a, mask) \
640 ((SYNTAX_CODE_COMMENT_BITS (a) & (mask)))
642 #define SYNTAX_CODE_COMMENT_1CHAR_MASK(a) \
643 ((SYNTAX_CODE_MATCHES_1CHAR_P (a, SYNTAX_COMMENT_STYLE_A) \
644 ? SYNTAX_COMMENT_STYLE_A \
645 : (SYNTAX_CODE_MATCHES_1CHAR_P (a, SYNTAX_COMMENT_STYLE_B) \
646 ? SYNTAX_COMMENT_STYLE_B \
650 /* These are the things that need to be #defined away to create a
651 no syntax-table property version. */
653 /* This should be entirely encapsulated in macros
654 #define update_syntax_cache(pos, count)
656 #define lookup_syntax_properties 0
658 #define SETUP_SYNTAX_CACHE(FROM, COUNT)
659 #define SETUP_SYNTAX_CACHE_FOR_BUFFER(BUFFER, FROM, COUNT)
660 #define SETUP_SYNTAX_CACHE_FOR_OBJECT(OBJECT, BUFFER, FROM, COUNT)
661 #define UPDATE_SYNTAX_CACHE_FORWARD(pos)
662 #define UPDATE_SYNTAX_CACHE_BACKWARD(pos)
663 #define UPDATE_SYNTAX_CACHE(pos)
665 #define SYNTAX_FROM_CACHE SYNTAX
666 #define SYNTAX_CODE_FROM_CACHE SYNTAX_CODE
668 #define SYNTAX_CACHE_BYTE_TO_CHAR(x) 0
670 /* cache statistics */
671 #define SCS_STATISTICS_SET_FUNCTION(fndx)
672 #define SYNTAX_CACHE_STATISTICS_COUNT_INIT
675 #endif /* INCLUDED_syntax_h_ */