Mercurial > hg > xemacs-beta
annotate src/syntax.h @ 5428:73eef12660cd
Converted gnuserv docs to GPLv3 or later.
| author | Mats Lidell <matsl@xemacs.org> |
|---|---|
| date | Sat, 06 Nov 2010 22:57:08 +0100 |
| parents | 308d34e9f07d |
| children | dab422055bab |
| rev | line source |
|---|---|
| 428 | 1 /* Declarations having to do with XEmacs syntax tables. |
| 2 Copyright (C) 1985, 1992, 1993 Free Software Foundation, Inc. | |
| 1296 | 3 Copyright (C) 2002, 2003 Ben Wing. |
| 428 | 4 |
| 5 This file is part of XEmacs. | |
| 6 | |
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7 XEmacs is free software: you can redistribute it and/or modify it |
| 428 | 8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation, either version 3 of the License, or (at your |
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10 option) any later version. |
| 428 | 11 |
| 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 | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
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18 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 428 | 19 |
| 20 /* Synched up with: FSF 19.28. */ | |
| 21 | |
| 440 | 22 #ifndef INCLUDED_syntax_h_ |
| 23 #define INCLUDED_syntax_h_ | |
| 428 | 24 |
| 25 #include "chartab.h" | |
| 26 | |
| 27 /* A syntax table is a type of char table. | |
| 28 | |
| 29 The low 7 bits of the integer is a code, as follows. The 8th bit is | |
| 30 used as the prefix bit flag (see below). | |
| 31 | |
| 32 The values in a syntax table are either integers or conses of | |
| 33 integers and chars. The lowest 7 bits of the integer are the syntax | |
| 34 class. If this is Sinherit, then the actual syntax value needs to | |
| 35 be retrieved from the standard syntax table. | |
| 36 | |
| 37 Since the logic involved in finding the actual integer isn't very | |
| 38 complex, you'd think the time required to retrieve it is not a | |
| 39 factor. If you thought that, however, you'd be wrong, due to the | |
| 40 high number of times (many per character) that the syntax value is | |
| 41 accessed in functions such as scan_lists(). To speed this up, | |
| 42 we maintain a mirror syntax table that contains the actual | |
| 43 integers. We can do this successfully because syntax tables are | |
| 44 now an abstract type, where we control all access. | |
| 45 */ | |
| 46 | |
| 47 enum syntaxcode | |
| 48 { | |
| 49 Swhitespace, /* whitespace character */ | |
| 50 Spunct, /* random punctuation character */ | |
| 51 Sword, /* word constituent */ | |
| 52 Ssymbol, /* symbol constituent but not word constituent */ | |
| 53 Sopen, /* a beginning delimiter */ | |
| 54 Sclose, /* an ending delimiter */ | |
| 55 Squote, /* a prefix character like Lisp ' */ | |
| 56 Sstring, /* a string-grouping character like Lisp " */ | |
| 57 Smath, /* delimiters like $ in TeX. */ | |
| 58 Sescape, /* a character that begins a C-style escape */ | |
| 59 Scharquote, /* a character that quotes the following character */ | |
| 60 Scomment, /* a comment-starting character */ | |
| 61 Sendcomment, /* a comment-ending character */ | |
| 62 Sinherit, /* use the standard syntax table for this character */ | |
| 460 | 63 Scomment_fence, /* Starts/ends comment which is delimited on the |
| 64 other side by a char with the same syntaxcode. */ | |
| 65 Sstring_fence, /* Starts/ends string which is delimited on the | |
| 66 other side by a char with the same syntaxcode. */ | |
| 428 | 67 Smax /* Upper bound on codes that are meaningful */ |
| 68 }; | |
| 69 | |
| 70 enum syntaxcode charset_syntax (struct buffer *buf, Lisp_Object charset, | |
| 71 int *multi_p_out); | |
| 72 | |
| 1296 | 73 void update_syntax_table (Lisp_Object table); |
| 74 | |
| 75 DECLARE_INLINE_HEADER ( | |
| 76 void | |
| 77 update_mirror_syntax_if_dirty (Lisp_Object table) | |
| 78 ) | |
| 79 { | |
| 80 if (XCHAR_TABLE (table)->dirty) | |
| 81 update_syntax_table (table); | |
| 82 } | |
| 83 | |
| 428 | 84 /* Return the syntax code for a particular character and mirror table. */ |
| 85 | |
| 1296 | 86 DECLARE_INLINE_HEADER ( |
| 1315 | 87 int |
| 1296 | 88 SYNTAX_CODE (Lisp_Object table, Ichar c) |
| 89 ) | |
| 90 { | |
| 91 type_checking_assert (XCHAR_TABLE (table)->mirror_table_p); | |
| 92 update_mirror_syntax_if_dirty (table); | |
| 1315 | 93 return XINT (get_char_table_1 (c, table)); |
| 1296 | 94 } |
| 95 | |
| 96 #ifdef NOT_WORTH_THE_EFFORT | |
| 97 | |
| 98 /* Same but skip the dirty check. */ | |
| 99 | |
| 100 DECLARE_INLINE_HEADER ( | |
| 1315 | 101 int |
| 1296 | 102 SYNTAX_CODE_1 (Lisp_Object table, Ichar c) |
| 103 ) | |
| 104 { | |
| 105 type_checking_assert (XCHAR_TABLE (table)->mirror_table_p); | |
| 106 return (enum syntaxcode) XINT (get_char_table_1 (c, table)); | |
| 107 } | |
| 108 | |
| 109 #endif /* NOT_WORTH_THE_EFFORT */ | |
| 428 | 110 |
| 111 #define SYNTAX_FROM_CODE(code) ((enum syntaxcode) ((code) & 0177)) | |
| 826 | 112 |
| 428 | 113 #define SYNTAX(table, c) SYNTAX_FROM_CODE (SYNTAX_CODE (table, c)) |
| 114 | |
| 826 | 115 DECLARE_INLINE_HEADER ( |
| 116 int | |
| 867 | 117 WORD_SYNTAX_P (Lisp_Object table, Ichar c) |
| 826 | 118 ) |
| 428 | 119 { |
| 120 return SYNTAX (table, c) == Sword; | |
| 121 } | |
| 122 | |
| 123 /* OK, here's a graphic diagram of the format of the syntax values: | |
| 124 | |
| 125 Bit number: | |
| 126 | |
| 127 [ 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 ] | |
| 128 [ 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 ] | |
| 129 | |
| 130 <-----> <-----> <-------------> <-------------> ^ <-----------> | |
| 131 ELisp unused |comment bits | unused | syntax code | |
| 132 tag | | | | | | | | | | |
| 133 stuff | | | | | | | | | | |
| 134 | | | | | | | | | | |
| 135 | | | | | | | | `--> prefix flag | |
| 136 | | | | | | | | | |
| 137 | | | | | | | `--> comment end style B, second char | |
| 138 | | | | | | `----> comment end style A, second char | |
| 139 | | | | | `------> comment end style B, first char | |
| 140 | | | | `--------> comment end style A, first char | |
| 141 | | | `----------> comment start style B, second char | |
| 142 | | `------------> comment start style A, second char | |
| 143 | `--------------> comment start style B, first char | |
| 144 `----------------> comment start style A, first char | |
| 145 | |
| 146 In a 64-bit integer, there would be 32 more unused bits between | |
| 147 the tag and the comment bits. | |
| 148 | |
| 149 Clearly, such a scheme will not work for Mule, because the matching | |
| 3498 | 150 paren could be any character and as such requires 21 bits, which |
| 428 | 151 we don't got. |
| 152 | |
| 153 Remember that under Mule we use char tables instead of vectors. | |
| 154 So what we do is use another char table for the matching paren | |
| 155 and store a pointer to it in the first char table. (This frees | |
| 156 code from having to worry about passing two tables around.) | |
| 157 */ | |
| 158 | |
| 159 | |
| 160 /* The prefix flag bit for backward-prefix-chars is now put into bit 7. */ | |
| 161 | |
| 162 #define SYNTAX_PREFIX(table, c) \ | |
| 163 ((SYNTAX_CODE (table, c) >> 7) & 1) | |
| 164 | |
| 165 /* Bits 23-16 are used to implement up to two comment styles | |
| 166 in a single buffer. They have the following meanings: | |
| 167 | |
| 168 1. first of a one or two character comment-start sequence of style a. | |
| 169 2. first of a one or two character comment-start sequence of style b. | |
| 170 3. second of a two-character comment-start sequence of style a. | |
| 171 4. second of a two-character comment-start sequence of style b. | |
| 172 5. first of a one or two character comment-end sequence of style a. | |
| 173 6. first of a one or two character comment-end sequence of style b. | |
| 174 7. second of a two-character comment-end sequence of style a. | |
| 175 8. second of a two-character comment-end sequence of style b. | |
| 176 */ | |
| 177 | |
| 178 #define SYNTAX_COMMENT_BITS(table, c) \ | |
| 179 ((SYNTAX_CODE (table, c) >> 16) &0xff) | |
| 180 | |
| 181 #define SYNTAX_FIRST_OF_START_A 0x80 | |
| 182 #define SYNTAX_FIRST_OF_START_B 0x40 | |
| 183 #define SYNTAX_SECOND_OF_START_A 0x20 | |
| 184 #define SYNTAX_SECOND_OF_START_B 0x10 | |
| 185 #define SYNTAX_FIRST_OF_END_A 0x08 | |
| 186 #define SYNTAX_FIRST_OF_END_B 0x04 | |
| 187 #define SYNTAX_SECOND_OF_END_A 0x02 | |
| 188 #define SYNTAX_SECOND_OF_END_B 0x01 | |
| 189 | |
| 190 #define SYNTAX_COMMENT_STYLE_A 0xaa | |
| 191 #define SYNTAX_COMMENT_STYLE_B 0x55 | |
| 192 #define SYNTAX_FIRST_CHAR_START 0xc0 | |
| 193 #define SYNTAX_FIRST_CHAR_END 0x0c | |
| 194 #define SYNTAX_FIRST_CHAR 0xcc | |
| 195 #define SYNTAX_SECOND_CHAR_START 0x30 | |
| 196 #define SYNTAX_SECOND_CHAR_END 0x03 | |
| 197 #define SYNTAX_SECOND_CHAR 0x33 | |
| 198 | |
| 826 | 199 #if 0 |
| 200 | |
| 201 /* #### Entirely unused. Should they be deleted? */ | |
| 428 | 202 |
| 442 | 203 /* #### These are now more or less equivalent to |
| 204 SYNTAX_COMMENT_MATCH_START ...*/ | |
| 205 /* a and b must be first and second start chars for a common type */ | |
| 206 #define SYNTAX_START_P(table, a, b) \ | |
| 207 (((SYNTAX_COMMENT_BITS (table, a) & SYNTAX_FIRST_CHAR_START) >> 2) \ | |
| 208 & (SYNTAX_COMMENT_BITS (table, b) & SYNTAX_SECOND_CHAR_START)) | |
| 209 | |
| 210 /* ... and SYNTAX_COMMENT_MATCH_END */ | |
| 211 /* a and b must be first and second end chars for a common type */ | |
| 212 #define SYNTAX_END_P(table, a, b) \ | |
| 213 (((SYNTAX_COMMENT_BITS (table, a) & SYNTAX_FIRST_CHAR_END) >> 2) \ | |
| 214 & (SYNTAX_COMMENT_BITS (table, b) & SYNTAX_SECOND_CHAR_END)) | |
| 428 | 215 |
| 216 #define SYNTAX_STYLES_MATCH_START_P(table, a, b, mask) \ | |
| 217 ((SYNTAX_COMMENT_BITS (table, a) & SYNTAX_FIRST_CHAR_START & (mask)) \ | |
| 218 && (SYNTAX_COMMENT_BITS (table, b) & SYNTAX_SECOND_CHAR_START & (mask))) | |
| 219 | |
| 220 #define SYNTAX_STYLES_MATCH_END_P(table, a, b, mask) \ | |
| 221 ((SYNTAX_COMMENT_BITS (table, a) & SYNTAX_FIRST_CHAR_END & (mask)) \ | |
| 222 && (SYNTAX_COMMENT_BITS (table, b) & SYNTAX_SECOND_CHAR_END & (mask))) | |
| 223 | |
| 224 #define SYNTAX_STYLES_MATCH_1CHAR_P(table, a, mask) \ | |
| 225 ((SYNTAX_COMMENT_BITS (table, a) & (mask))) | |
| 226 | |
| 227 #define STYLE_FOUND_P(table, a, b, startp, style) \ | |
| 228 ((SYNTAX_COMMENT_BITS (table, a) & \ | |
| 229 ((startp) ? SYNTAX_FIRST_CHAR_START : \ | |
| 230 SYNTAX_FIRST_CHAR_END) & (style)) \ | |
| 231 && (SYNTAX_COMMENT_BITS (table, b) & \ | |
| 232 ((startp) ? SYNTAX_SECOND_CHAR_START : \ | |
| 233 SYNTAX_SECOND_CHAR_END) & (style))) | |
| 234 | |
| 235 #define SYNTAX_COMMENT_MASK_START(table, a, b) \ | |
| 236 ((STYLE_FOUND_P (table, a, b, 1, SYNTAX_COMMENT_STYLE_A) \ | |
| 237 ? SYNTAX_COMMENT_STYLE_A \ | |
| 238 : (STYLE_FOUND_P (table, a, b, 1, SYNTAX_COMMENT_STYLE_B) \ | |
| 239 ? SYNTAX_COMMENT_STYLE_B \ | |
| 240 : 0))) | |
| 241 | |
| 242 #define SYNTAX_COMMENT_MASK_END(table, a, b) \ | |
| 243 ((STYLE_FOUND_P (table, a, b, 0, SYNTAX_COMMENT_STYLE_A) \ | |
| 244 ? SYNTAX_COMMENT_STYLE_A \ | |
| 245 : (STYLE_FOUND_P (table, a, b, 0, SYNTAX_COMMENT_STYLE_B) \ | |
| 246 ? SYNTAX_COMMENT_STYLE_B \ | |
| 247 : 0))) | |
| 248 | |
| 249 #define STYLE_FOUND_1CHAR_P(table, a, style) \ | |
| 250 ((SYNTAX_COMMENT_BITS (table, a) & (style))) | |
| 251 | |
| 252 #define SYNTAX_COMMENT_1CHAR_MASK(table, a) \ | |
| 253 ((STYLE_FOUND_1CHAR_P (table, a, SYNTAX_COMMENT_STYLE_A) \ | |
| 254 ? SYNTAX_COMMENT_STYLE_A \ | |
| 255 : (STYLE_FOUND_1CHAR_P (table, a, SYNTAX_COMMENT_STYLE_B) \ | |
| 256 ? SYNTAX_COMMENT_STYLE_B \ | |
| 257 : 0))) | |
| 258 | |
| 826 | 259 #endif /* 0 */ |
| 428 | 260 |
| 261 /* This array, indexed by a character, contains the syntax code which | |
| 262 that character signifies (as a char). | |
| 263 For example, (enum syntaxcode) syntax_spec_code['w'] is Sword. */ | |
| 264 | |
| 442 | 265 extern const unsigned char syntax_spec_code[0400]; |
| 428 | 266 |
| 267 /* Indexed by syntax code, give the letter that describes it. */ | |
| 268 | |
| 442 | 269 extern const unsigned char syntax_code_spec[]; |
| 428 | 270 |
| 665 | 271 Lisp_Object scan_lists (struct buffer *buf, Charbpos from, int count, |
| 428 | 272 int depth, int sexpflag, int no_error); |
| 665 | 273 int char_quoted (struct buffer *buf, Charbpos pos); |
| 428 | 274 |
| 275 /* NOTE: This does not refer to the mirror table, but to the | |
| 276 syntax table itself. */ | |
| 867 | 277 Lisp_Object syntax_match (Lisp_Object table, Ichar ch); |
| 428 | 278 |
| 279 extern int no_quit_in_re_search; | |
| 826 | 280 |
| 281 | |
| 282 /****************************** syntax caches ********************************/ | |
| 460 | 283 |
| 284 extern int lookup_syntax_properties; | |
| 285 | |
| 826 | 286 /* Now that the `syntax-table' property exists, and can override the syntax |
| 287 table or directly specify the syntax, we cache the last place we | |
| 288 retrieved the syntax-table property. This is because, when moving | |
| 289 linearly through text (e.g. in the regex routines or the scanning | |
| 290 routines in syntax.c), we only need to recalculate at the next place the | |
| 291 syntax-table property changes (i.e. not every position), and when we do | |
| 292 need to recalculate, we can update the info from the previous info | |
| 293 faster than if we did the whole calculation from scratch. */ | |
| 460 | 294 struct syntax_cache |
| 295 { | |
| 3092 | 296 #ifdef NEW_GC |
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297 NORMAL_LISP_OBJECT_HEADER header; |
| 3092 | 298 #endif /* NEW_GC */ |
| 826 | 299 int use_code; /* Whether to use syntax_code or |
| 1296 | 300 syntax_table. This is set |
| 301 depending on whether the | |
| 826 | 302 syntax-table property is a |
| 303 syntax table or a syntax | |
| 304 code. */ | |
| 305 int no_syntax_table_prop; /* If non-zero, there was no | |
| 306 `syntax-table' property on the | |
| 307 current range, and so we're | |
| 308 using the buffer's syntax table. | |
| 309 This is important to note because | |
| 310 sometimes the buffer's syntax | |
| 311 table can be changed. */ | |
| 460 | 312 Lisp_Object object; /* The buffer or string the current |
| 826 | 313 syntax cache applies to, or |
| 314 Qnil for a string of text not | |
| 315 coming from a buffer or string. */ | |
| 316 struct buffer *buffer; /* The buffer that supplies the | |
| 317 syntax tables, or 0 for the | |
| 318 standard syntax table. If | |
| 319 OBJECT is a buffer, this will | |
| 320 always be the same buffer. */ | |
| 460 | 321 int syntax_code; /* Syntax code of current char. */ |
| 1296 | 322 Lisp_Object syntax_table; /* Syntax table for current pos. */ |
| 323 Lisp_Object mirror_table; /* Mirror table for this table. */ | |
| 826 | 324 Lisp_Object start, end; /* Markers to keep track of the |
| 325 known region in a buffer. | |
| 326 Formerly we used an internal | |
| 327 extent, but it seems that having | |
| 328 an extent over the entire buffer | |
| 329 causes serious slowdowns in | |
| 330 extent operations! Yuck! */ | |
| 331 Charxpos next_change; /* Position of the next extent | |
| 460 | 332 change. */ |
| 826 | 333 Charxpos prev_change; /* Position of the previous extent |
| 334 change. */ | |
| 460 | 335 }; |
| 826 | 336 |
| 3092 | 337 #ifdef NEW_GC |
| 338 typedef struct syntax_cache Lisp_Syntax_Cache; | |
| 339 | |
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340 DECLARE_LISP_OBJECT (syntax_cache, Lisp_Syntax_Cache); |
| 3092 | 341 |
| 342 #define XSYNTAX_CACHE(x) \ | |
| 343 XRECORD (x, syntax_cache, Lisp_Syntax_Cache) | |
| 344 #define wrap_syntax_cache(p) wrap_record (p, syntax_cache) | |
| 345 #define SYNTAX_CACHE_P(x) RECORDP (x, syntax_cache) | |
| 346 #define CHECK_SYNTAX_CACHE(x) CHECK_RECORD (x, syntax_cache) | |
| 347 #define CONCHECK_SYNTAX_CACHE(x) CONCHECK_RECORD (x, syntax_cache) | |
| 348 #endif /* NEW_GC */ | |
| 349 | |
| 350 | |
| 351 | |
| 1296 | 352 extern const struct sized_memory_description syntax_cache_description; |
| 353 | |
| 826 | 354 /* Note that the external interface to the syntax-cache uses charpos's, but |
| 3250 | 355 internally we use bytepos's, for speed. */ |
| 460 | 356 |
| 826 | 357 void update_syntax_cache (struct syntax_cache *cache, Charxpos pos, int count); |
| 358 struct syntax_cache *setup_syntax_cache (struct syntax_cache *cache, | |
| 359 Lisp_Object object, | |
| 360 struct buffer *buffer, | |
| 361 Charxpos from, int count); | |
| 362 struct syntax_cache *setup_buffer_syntax_cache (struct buffer *buffer, | |
| 363 Charxpos from, int count); | |
| 460 | 364 |
| 365 /* Make syntax cache state good for CHARPOS, assuming it is | |
| 366 currently good for a position before CHARPOS. */ | |
| 826 | 367 DECLARE_INLINE_HEADER ( |
| 368 void | |
| 369 UPDATE_SYNTAX_CACHE_FORWARD (struct syntax_cache *cache, Charxpos pos) | |
| 370 ) | |
| 371 { | |
| 1315 | 372 /* #### Formerly this function, and the next one, had |
| 373 | |
| 374 if (pos < cache->prev_change || pos >= cache->next_change) | |
| 375 | |
| 376 just like for plain UPDATE_SYNTAX_CACHE. However, sometimes the | |
| 377 value of POS may be invalid (particularly, it may be 0 for a buffer). | |
| 378 FSF has the check at only one end, so let's try the same. */ | |
| 379 if (pos >= cache->next_change) | |
| 826 | 380 update_syntax_cache (cache, pos, 1); |
| 381 } | |
| 460 | 382 |
| 383 /* Make syntax cache state good for CHARPOS, assuming it is | |
| 384 currently good for a position after CHARPOS. */ | |
| 826 | 385 DECLARE_INLINE_HEADER ( |
| 386 void | |
| 387 UPDATE_SYNTAX_CACHE_BACKWARD (struct syntax_cache *cache, Charxpos pos) | |
| 388 ) | |
| 389 { | |
| 1315 | 390 if (pos < cache->prev_change) |
| 826 | 391 update_syntax_cache (cache, pos, -1); |
| 392 } | |
| 460 | 393 |
| 394 /* Make syntax cache state good for CHARPOS */ | |
| 826 | 395 DECLARE_INLINE_HEADER ( |
| 396 void | |
| 397 UPDATE_SYNTAX_CACHE (struct syntax_cache *cache, Charxpos pos) | |
| 398 ) | |
| 399 { | |
| 1315 | 400 if (pos < cache->prev_change || pos >= cache->next_change) |
| 826 | 401 update_syntax_cache (cache, pos, 0); |
| 402 } | |
| 460 | 403 |
| 826 | 404 #define SYNTAX_FROM_CACHE(cache, c) \ |
| 405 SYNTAX_FROM_CODE (SYNTAX_CODE_FROM_CACHE (cache, c)) | |
| 460 | 406 |
| 826 | 407 #define SYNTAX_CODE_FROM_CACHE(cache, c) \ |
| 408 ((cache)->use_code ? (cache)->syntax_code \ | |
| 1296 | 409 : SYNTAX_CODE ((cache)->mirror_table, c)) |
| 410 | |
| 411 #ifdef NOT_WORTH_THE_EFFORT | |
| 412 /* If we really cared about the theoretical performance hit of the dirty | |
| 413 check in SYNTAX_CODE, we could use SYNTAX_CODE_1 and endeavor to always | |
| 414 keep the mirror table clean, e.g. by checking for dirtiness at the time | |
| 415 we set up the syntax cache. There are lots of potential problems, of | |
| 416 course -- incomplete understanding of the possible pathways into the | |
| 417 code, with some that are bypassing the setups, Lisp code being executed | |
| 418 in the meantime that could change things (e.g. QUIT is called in many | |
| 419 functions and could execute arbitrary Lisp very easily), etc. The QUIT | |
| 420 problem is the biggest one, probably, and one of the main reasons it's | |
| 421 probably just not worth it. */ | |
| 422 #define SYNTAX_CODE_FROM_CACHE(cache, c) \ | |
| 423 ((cache)->use_code ? (cache)->syntax_code \ | |
| 424 : SYNTAX_CODE_1 ((cache)->mirror_table, c)) | |
| 425 #endif | |
| 826 | 426 |
| 427 | |
| 428 /***************************** syntax code macros ****************************/ | |
| 460 | 429 |
| 430 #define SYNTAX_CODE_PREFIX(c) \ | |
| 431 ((c >> 7) & 1) | |
| 432 | |
| 433 #define SYNTAX_CODE_COMMENT_BITS(c) \ | |
| 434 ((c >> 16) &0xff) | |
| 435 | |
| 436 #define SYNTAX_CODES_START_P(a, b) \ | |
| 437 (((SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_START) >> 2) \ | |
| 438 & (SYNTAX_CODE_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_START)) | |
| 439 | |
| 440 #define SYNTAX_CODES_END_P(a, b) \ | |
| 441 (((SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_END) >> 2) \ | |
| 442 & (SYNTAX_CODE_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_END)) | |
| 443 | |
| 444 #define SYNTAX_CODES_COMMENT_MASK_START(a, b) \ | |
| 445 (SYNTAX_CODES_MATCH_START_P (a, b, SYNTAX_COMMENT_STYLE_A) \ | |
| 446 ? SYNTAX_COMMENT_STYLE_A \ | |
| 447 : (SYNTAX_CODES_MATCH_START_P (a, b, SYNTAX_COMMENT_STYLE_B) \ | |
| 448 ? SYNTAX_COMMENT_STYLE_B \ | |
| 449 : 0)) | |
| 450 #define SYNTAX_CODES_COMMENT_MASK_END(a, b) \ | |
| 451 (SYNTAX_CODES_MATCH_END_P (a, b, SYNTAX_COMMENT_STYLE_A) \ | |
| 452 ? SYNTAX_COMMENT_STYLE_A \ | |
| 453 : (SYNTAX_CODES_MATCH_END_P (a, b, SYNTAX_COMMENT_STYLE_B) \ | |
| 454 ? SYNTAX_COMMENT_STYLE_B \ | |
| 455 : 0)) | |
| 456 | |
| 457 #define SYNTAX_CODE_START_FIRST_P(a) \ | |
| 458 (SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_START) | |
| 459 | |
| 460 #define SYNTAX_CODE_START_SECOND_P(a) \ | |
| 461 (SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_SECOND_CHAR_START) | |
| 462 | |
| 463 #define SYNTAX_CODE_END_FIRST_P(a) \ | |
| 464 (SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_END) | |
| 465 | |
| 466 #define SYNTAX_CODE_END_SECOND_P(a) \ | |
| 467 (SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_SECOND_CHAR_END) | |
| 468 | |
| 469 | |
| 470 #define SYNTAX_CODES_MATCH_START_P(a, b, mask) \ | |
| 471 ((SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_START & (mask)) \ | |
| 472 && (SYNTAX_CODE_COMMENT_BITS (b) \ | |
| 473 & SYNTAX_SECOND_CHAR_START & (mask))) | |
| 474 | |
| 475 #define SYNTAX_CODES_MATCH_END_P(a, b, mask) \ | |
| 476 ((SYNTAX_CODE_COMMENT_BITS (a) & SYNTAX_FIRST_CHAR_END & (mask)) \ | |
| 477 && (SYNTAX_CODE_COMMENT_BITS (b) & SYNTAX_SECOND_CHAR_END & (mask))) | |
| 478 | |
| 479 #define SYNTAX_CODE_MATCHES_1CHAR_P(a, mask) \ | |
| 480 ((SYNTAX_CODE_COMMENT_BITS (a) & (mask))) | |
| 481 | |
| 482 #define SYNTAX_CODE_COMMENT_1CHAR_MASK(a) \ | |
| 483 ((SYNTAX_CODE_MATCHES_1CHAR_P (a, SYNTAX_COMMENT_STYLE_A) \ | |
| 484 ? SYNTAX_COMMENT_STYLE_A \ | |
| 485 : (SYNTAX_CODE_MATCHES_1CHAR_P (a, SYNTAX_COMMENT_STYLE_B) \ | |
| 486 ? SYNTAX_COMMENT_STYLE_B \ | |
| 487 : 0))) | |
| 488 | |
| 489 | |
| 440 | 490 #endif /* INCLUDED_syntax_h_ */ |