Mercurial > vim
annotate src/regexp.c @ 4682:2f51ee8825db v7.3.1088
updated for version 7.3.1088
Problem: New regexp engine: \@<= and \@<! are not implemented.
Solution: Implement look-behind matching. Fix off-by-one error in old
regexp engine.
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Sat, 01 Jun 2013 19:54:43 +0200 |
| parents | 4d92b873acef |
| children | 371cc0c44097 |
| rev | line source |
|---|---|
| 7 | 1 /* vi:set ts=8 sts=4 sw=4: |
| 2 * | |
| 3 * Handling of regular expressions: vim_regcomp(), vim_regexec(), vim_regsub() | |
| 4 * | |
| 5 * NOTICE: | |
| 6 * | |
| 7 * This is NOT the original regular expression code as written by Henry | |
| 8 * Spencer. This code has been modified specifically for use with the VIM | |
| 9 * editor, and should not be used separately from Vim. If you want a good | |
| 10 * regular expression library, get the original code. The copyright notice | |
| 11 * that follows is from the original. | |
| 12 * | |
| 13 * END NOTICE | |
| 14 * | |
| 15 * Copyright (c) 1986 by University of Toronto. | |
| 16 * Written by Henry Spencer. Not derived from licensed software. | |
| 17 * | |
| 18 * Permission is granted to anyone to use this software for any | |
| 19 * purpose on any computer system, and to redistribute it freely, | |
| 20 * subject to the following restrictions: | |
| 21 * | |
| 22 * 1. The author is not responsible for the consequences of use of | |
| 23 * this software, no matter how awful, even if they arise | |
| 24 * from defects in it. | |
| 25 * | |
| 26 * 2. The origin of this software must not be misrepresented, either | |
| 27 * by explicit claim or by omission. | |
| 28 * | |
| 29 * 3. Altered versions must be plainly marked as such, and must not | |
| 30 * be misrepresented as being the original software. | |
| 31 * | |
| 32 * Beware that some of this code is subtly aware of the way operator | |
| 33 * precedence is structured in regular expressions. Serious changes in | |
| 34 * regular-expression syntax might require a total rethink. | |
| 35 * | |
| 24 | 36 * Changes have been made by Tony Andrews, Olaf 'Rhialto' Seibert, Robert |
| 37 * Webb, Ciaran McCreesh and Bram Moolenaar. | |
| 7 | 38 * Named character class support added by Walter Briscoe (1998 Jul 01) |
| 39 */ | |
| 40 | |
| 4444 | 41 /* Uncomment the first if you do not want to see debugging logs or files |
| 42 * related to regular expressions, even when compiling with -DDEBUG. | |
| 43 * Uncomment the second to get the regexp debugging. */ | |
| 44 /* #undef DEBUG */ | |
| 45 /* #define DEBUG */ | |
| 46 | |
| 7 | 47 #include "vim.h" |
| 48 | |
| 4444 | 49 #ifdef DEBUG |
| 50 /* show/save debugging data when BT engine is used */ | |
| 51 # define BT_REGEXP_DUMP | |
| 52 /* save the debugging data to a file instead of displaying it */ | |
| 53 # define BT_REGEXP_LOG | |
| 4460 | 54 # define BT_REGEXP_DEBUG_LOG |
| 55 # define BT_REGEXP_DEBUG_LOG_NAME "bt_regexp_debug.log" | |
| 4444 | 56 #endif |
| 7 | 57 |
| 58 /* | |
| 59 * The "internal use only" fields in regexp.h are present to pass info from | |
| 60 * compile to execute that permits the execute phase to run lots faster on | |
| 61 * simple cases. They are: | |
| 62 * | |
| 63 * regstart char that must begin a match; NUL if none obvious; Can be a | |
| 64 * multi-byte character. | |
| 65 * reganch is the match anchored (at beginning-of-line only)? | |
| 66 * regmust string (pointer into program) that match must include, or NULL | |
| 67 * regmlen length of regmust string | |
| 68 * regflags RF_ values or'ed together | |
| 69 * | |
| 70 * Regstart and reganch permit very fast decisions on suitable starting points | |
| 71 * for a match, cutting down the work a lot. Regmust permits fast rejection | |
| 72 * of lines that cannot possibly match. The regmust tests are costly enough | |
| 73 * that vim_regcomp() supplies a regmust only if the r.e. contains something | |
| 74 * potentially expensive (at present, the only such thing detected is * or + | |
| 75 * at the start of the r.e., which can involve a lot of backup). Regmlen is | |
| 76 * supplied because the test in vim_regexec() needs it and vim_regcomp() is | |
| 77 * computing it anyway. | |
| 78 */ | |
| 79 | |
| 80 /* | |
| 81 * Structure for regexp "program". This is essentially a linear encoding | |
| 82 * of a nondeterministic finite-state machine (aka syntax charts or | |
| 83 * "railroad normal form" in parsing technology). Each node is an opcode | |
| 84 * plus a "next" pointer, possibly plus an operand. "Next" pointers of | |
| 85 * all nodes except BRANCH and BRACES_COMPLEX implement concatenation; a "next" | |
| 86 * pointer with a BRANCH on both ends of it is connecting two alternatives. | |
| 87 * (Here we have one of the subtle syntax dependencies: an individual BRANCH | |
| 88 * (as opposed to a collection of them) is never concatenated with anything | |
| 89 * because of operator precedence). The "next" pointer of a BRACES_COMPLEX | |
| 167 | 90 * node points to the node after the stuff to be repeated. |
| 91 * The operand of some types of node is a literal string; for others, it is a | |
| 92 * node leading into a sub-FSM. In particular, the operand of a BRANCH node | |
| 93 * is the first node of the branch. | |
| 94 * (NB this is *not* a tree structure: the tail of the branch connects to the | |
| 95 * thing following the set of BRANCHes.) | |
| 7 | 96 * |
| 97 * pattern is coded like: | |
| 98 * | |
| 99 * +-----------------+ | |
| 100 * | V | |
| 101 * <aa>\|<bb> BRANCH <aa> BRANCH <bb> --> END | |
| 102 * | ^ | ^ | |
| 103 * +------+ +----------+ | |
| 104 * | |
| 105 * | |
| 106 * +------------------+ | |
| 107 * V | | |
| 108 * <aa>* BRANCH BRANCH <aa> --> BACK BRANCH --> NOTHING --> END | |
| 109 * | | ^ ^ | |
| 110 * | +---------------+ | | |
| 111 * +---------------------------------------------+ | |
| 112 * | |
| 113 * | |
| 167 | 114 * +----------------------+ |
| 115 * V | | |
| 233 | 116 * <aa>\+ BRANCH <aa> --> BRANCH --> BACK BRANCH --> NOTHING --> END |
| 856 | 117 * | | ^ ^ |
| 118 * | +-----------+ | | |
| 179 | 119 * +--------------------------------------------------+ |
| 167 | 120 * |
| 121 * | |
| 7 | 122 * +-------------------------+ |
| 123 * V | | |
| 124 * <aa>\{} BRANCH BRACE_LIMITS --> BRACE_COMPLEX <aa> --> BACK END | |
| 125 * | | ^ | |
| 126 * | +----------------+ | |
| 127 * +-----------------------------------------------+ | |
| 128 * | |
| 129 * | |
| 130 * <aa>\@!<bb> BRANCH NOMATCH <aa> --> END <bb> --> END | |
| 131 * | | ^ ^ | |
| 132 * | +----------------+ | | |
| 133 * +--------------------------------+ | |
| 134 * | |
| 135 * +---------+ | |
| 136 * | V | |
| 137 * \z[abc] BRANCH BRANCH a BRANCH b BRANCH c BRANCH NOTHING --> END | |
| 138 * | | | | ^ ^ | |
| 139 * | | | +-----+ | | |
| 140 * | | +----------------+ | | |
| 141 * | +---------------------------+ | | |
| 142 * +------------------------------------------------------+ | |
| 143 * | |
| 1209 | 144 * They all start with a BRANCH for "\|" alternatives, even when there is only |
| 7 | 145 * one alternative. |
| 146 */ | |
| 147 | |
| 148 /* | |
| 149 * The opcodes are: | |
| 150 */ | |
| 151 | |
| 152 /* definition number opnd? meaning */ | |
| 153 #define END 0 /* End of program or NOMATCH operand. */ | |
| 154 #define BOL 1 /* Match "" at beginning of line. */ | |
| 155 #define EOL 2 /* Match "" at end of line. */ | |
| 156 #define BRANCH 3 /* node Match this alternative, or the | |
| 157 * next... */ | |
| 158 #define BACK 4 /* Match "", "next" ptr points backward. */ | |
| 159 #define EXACTLY 5 /* str Match this string. */ | |
| 160 #define NOTHING 6 /* Match empty string. */ | |
| 161 #define STAR 7 /* node Match this (simple) thing 0 or more | |
| 162 * times. */ | |
| 163 #define PLUS 8 /* node Match this (simple) thing 1 or more | |
| 164 * times. */ | |
| 165 #define MATCH 9 /* node match the operand zero-width */ | |
| 166 #define NOMATCH 10 /* node check for no match with operand */ | |
| 167 #define BEHIND 11 /* node look behind for a match with operand */ | |
| 168 #define NOBEHIND 12 /* node look behind for no match with operand */ | |
| 169 #define SUBPAT 13 /* node match the operand here */ | |
| 170 #define BRACE_SIMPLE 14 /* node Match this (simple) thing between m and | |
| 171 * n times (\{m,n\}). */ | |
| 172 #define BOW 15 /* Match "" after [^a-zA-Z0-9_] */ | |
| 173 #define EOW 16 /* Match "" at [^a-zA-Z0-9_] */ | |
| 174 #define BRACE_LIMITS 17 /* nr nr define the min & max for BRACE_SIMPLE | |
| 175 * and BRACE_COMPLEX. */ | |
| 176 #define NEWL 18 /* Match line-break */ | |
| 177 #define BHPOS 19 /* End position for BEHIND or NOBEHIND */ | |
| 178 | |
| 179 | |
| 180 /* character classes: 20-48 normal, 50-78 include a line-break */ | |
| 181 #define ADD_NL 30 | |
| 182 #define FIRST_NL ANY + ADD_NL | |
| 183 #define ANY 20 /* Match any one character. */ | |
| 184 #define ANYOF 21 /* str Match any character in this string. */ | |
| 185 #define ANYBUT 22 /* str Match any character not in this | |
| 186 * string. */ | |
| 187 #define IDENT 23 /* Match identifier char */ | |
| 188 #define SIDENT 24 /* Match identifier char but no digit */ | |
| 189 #define KWORD 25 /* Match keyword char */ | |
| 190 #define SKWORD 26 /* Match word char but no digit */ | |
| 191 #define FNAME 27 /* Match file name char */ | |
| 192 #define SFNAME 28 /* Match file name char but no digit */ | |
| 193 #define PRINT 29 /* Match printable char */ | |
| 194 #define SPRINT 30 /* Match printable char but no digit */ | |
| 195 #define WHITE 31 /* Match whitespace char */ | |
| 196 #define NWHITE 32 /* Match non-whitespace char */ | |
| 197 #define DIGIT 33 /* Match digit char */ | |
| 198 #define NDIGIT 34 /* Match non-digit char */ | |
| 199 #define HEX 35 /* Match hex char */ | |
| 200 #define NHEX 36 /* Match non-hex char */ | |
| 201 #define OCTAL 37 /* Match octal char */ | |
| 202 #define NOCTAL 38 /* Match non-octal char */ | |
| 203 #define WORD 39 /* Match word char */ | |
| 204 #define NWORD 40 /* Match non-word char */ | |
| 205 #define HEAD 41 /* Match head char */ | |
| 206 #define NHEAD 42 /* Match non-head char */ | |
| 207 #define ALPHA 43 /* Match alpha char */ | |
| 208 #define NALPHA 44 /* Match non-alpha char */ | |
| 209 #define LOWER 45 /* Match lowercase char */ | |
| 210 #define NLOWER 46 /* Match non-lowercase char */ | |
| 211 #define UPPER 47 /* Match uppercase char */ | |
| 212 #define NUPPER 48 /* Match non-uppercase char */ | |
| 213 #define LAST_NL NUPPER + ADD_NL | |
| 214 #define WITH_NL(op) ((op) >= FIRST_NL && (op) <= LAST_NL) | |
| 215 | |
| 216 #define MOPEN 80 /* -89 Mark this point in input as start of | |
| 217 * \( subexpr. MOPEN + 0 marks start of | |
| 218 * match. */ | |
| 219 #define MCLOSE 90 /* -99 Analogous to MOPEN. MCLOSE + 0 marks | |
| 220 * end of match. */ | |
| 221 #define BACKREF 100 /* -109 node Match same string again \1-\9 */ | |
| 222 | |
| 223 #ifdef FEAT_SYN_HL | |
| 224 # define ZOPEN 110 /* -119 Mark this point in input as start of | |
| 225 * \z( subexpr. */ | |
| 226 # define ZCLOSE 120 /* -129 Analogous to ZOPEN. */ | |
| 227 # define ZREF 130 /* -139 node Match external submatch \z1-\z9 */ | |
| 228 #endif | |
| 229 | |
| 230 #define BRACE_COMPLEX 140 /* -149 node Match nodes between m & n times */ | |
| 231 | |
| 232 #define NOPEN 150 /* Mark this point in input as start of | |
| 233 \%( subexpr. */ | |
| 234 #define NCLOSE 151 /* Analogous to NOPEN. */ | |
| 235 | |
| 236 #define MULTIBYTECODE 200 /* mbc Match one multi-byte character */ | |
| 237 #define RE_BOF 201 /* Match "" at beginning of file. */ | |
| 238 #define RE_EOF 202 /* Match "" at end of file. */ | |
| 239 #define CURSOR 203 /* Match location of cursor. */ | |
| 240 | |
| 241 #define RE_LNUM 204 /* nr cmp Match line number */ | |
| 242 #define RE_COL 205 /* nr cmp Match column number */ | |
| 243 #define RE_VCOL 206 /* nr cmp Match virtual column number */ | |
| 244 | |
| 639 | 245 #define RE_MARK 207 /* mark cmp Match mark position */ |
| 246 #define RE_VISUAL 208 /* Match Visual area */ | |
| 247 | |
| 7 | 248 /* |
| 249 * Magic characters have a special meaning, they don't match literally. | |
| 250 * Magic characters are negative. This separates them from literal characters | |
| 251 * (possibly multi-byte). Only ASCII characters can be Magic. | |
| 252 */ | |
| 253 #define Magic(x) ((int)(x) - 256) | |
| 254 #define un_Magic(x) ((x) + 256) | |
| 255 #define is_Magic(x) ((x) < 0) | |
| 256 | |
| 257 static int no_Magic __ARGS((int x)); | |
| 258 static int toggle_Magic __ARGS((int x)); | |
| 259 | |
| 260 static int | |
| 261 no_Magic(x) | |
| 262 int x; | |
| 263 { | |
| 264 if (is_Magic(x)) | |
| 265 return un_Magic(x); | |
| 266 return x; | |
| 267 } | |
| 268 | |
| 269 static int | |
| 270 toggle_Magic(x) | |
| 271 int x; | |
| 272 { | |
| 273 if (is_Magic(x)) | |
| 274 return un_Magic(x); | |
| 275 return Magic(x); | |
| 276 } | |
| 277 | |
| 278 /* | |
| 279 * The first byte of the regexp internal "program" is actually this magic | |
| 280 * number; the start node begins in the second byte. It's used to catch the | |
| 281 * most severe mutilation of the program by the caller. | |
| 282 */ | |
| 283 | |
| 284 #define REGMAGIC 0234 | |
| 285 | |
| 286 /* | |
| 287 * Opcode notes: | |
| 288 * | |
| 289 * BRANCH The set of branches constituting a single choice are hooked | |
| 290 * together with their "next" pointers, since precedence prevents | |
| 291 * anything being concatenated to any individual branch. The | |
| 292 * "next" pointer of the last BRANCH in a choice points to the | |
| 293 * thing following the whole choice. This is also where the | |
| 294 * final "next" pointer of each individual branch points; each | |
| 295 * branch starts with the operand node of a BRANCH node. | |
| 296 * | |
| 297 * BACK Normal "next" pointers all implicitly point forward; BACK | |
| 298 * exists to make loop structures possible. | |
| 299 * | |
| 300 * STAR,PLUS '=', and complex '*' and '+', are implemented as circular | |
| 301 * BRANCH structures using BACK. Simple cases (one character | |
| 302 * per match) are implemented with STAR and PLUS for speed | |
| 303 * and to minimize recursive plunges. | |
| 304 * | |
| 305 * BRACE_LIMITS This is always followed by a BRACE_SIMPLE or BRACE_COMPLEX | |
| 306 * node, and defines the min and max limits to be used for that | |
| 307 * node. | |
| 308 * | |
| 309 * MOPEN,MCLOSE ...are numbered at compile time. | |
| 310 * ZOPEN,ZCLOSE ...ditto | |
| 311 */ | |
| 312 | |
| 313 /* | |
| 314 * A node is one char of opcode followed by two chars of "next" pointer. | |
| 315 * "Next" pointers are stored as two 8-bit bytes, high order first. The | |
| 316 * value is a positive offset from the opcode of the node containing it. | |
| 317 * An operand, if any, simply follows the node. (Note that much of the | |
| 318 * code generation knows about this implicit relationship.) | |
| 319 * | |
| 320 * Using two bytes for the "next" pointer is vast overkill for most things, | |
| 321 * but allows patterns to get big without disasters. | |
| 322 */ | |
| 323 #define OP(p) ((int)*(p)) | |
| 324 #define NEXT(p) (((*((p) + 1) & 0377) << 8) + (*((p) + 2) & 0377)) | |
| 325 #define OPERAND(p) ((p) + 3) | |
| 326 /* Obtain an operand that was stored as four bytes, MSB first. */ | |
| 327 #define OPERAND_MIN(p) (((long)(p)[3] << 24) + ((long)(p)[4] << 16) \ | |
| 328 + ((long)(p)[5] << 8) + (long)(p)[6]) | |
| 329 /* Obtain a second operand stored as four bytes. */ | |
| 330 #define OPERAND_MAX(p) OPERAND_MIN((p) + 4) | |
| 331 /* Obtain a second single-byte operand stored after a four bytes operand. */ | |
| 332 #define OPERAND_CMP(p) (p)[7] | |
| 333 | |
| 334 /* | |
| 335 * Utility definitions. | |
| 336 */ | |
| 337 #define UCHARAT(p) ((int)*(char_u *)(p)) | |
| 338 | |
| 339 /* Used for an error (down from) vim_regcomp(): give the error message, set | |
| 340 * rc_did_emsg and return NULL */ | |
| 653 | 341 #define EMSG_RET_NULL(m) return (EMSG(m), rc_did_emsg = TRUE, (void *)NULL) |
| 308 | 342 #define EMSG_RET_FAIL(m) return (EMSG(m), rc_did_emsg = TRUE, FAIL) |
| 4444 | 343 #define EMSG2_RET_NULL(m, c) return (EMSG2((m), (c) ? "" : "\\"), rc_did_emsg = TRUE, (void *)NULL) |
| 344 #define EMSG2_RET_FAIL(m, c) return (EMSG2((m), (c) ? "" : "\\"), rc_did_emsg = TRUE, FAIL) | |
| 345 #define EMSG_ONE_RET_NULL EMSG2_RET_NULL(_("E369: invalid item in %s%%[]"), reg_magic == MAGIC_ALL) | |
| 7 | 346 |
| 347 #define MAX_LIMIT (32767L << 16L) | |
| 348 | |
| 349 static int re_multi_type __ARGS((int)); | |
| 350 static int cstrncmp __ARGS((char_u *s1, char_u *s2, int *n)); | |
| 351 static char_u *cstrchr __ARGS((char_u *, int)); | |
| 352 | |
| 4444 | 353 #ifdef BT_REGEXP_DUMP |
| 354 static void regdump __ARGS((char_u *, bt_regprog_T *)); | |
| 355 #endif | |
| 7 | 356 #ifdef DEBUG |
| 357 static char_u *regprop __ARGS((char_u *)); | |
| 358 #endif | |
| 359 | |
| 4444 | 360 static char_u e_missingbracket[] = N_("E769: Missing ] after %s["); |
| 361 static char_u e_unmatchedpp[] = N_("E53: Unmatched %s%%("); | |
| 362 static char_u e_unmatchedp[] = N_("E54: Unmatched %s("); | |
| 363 static char_u e_unmatchedpar[] = N_("E55: Unmatched %s)"); | |
| 364 | |
| 7 | 365 #define NOT_MULTI 0 |
| 366 #define MULTI_ONE 1 | |
| 367 #define MULTI_MULT 2 | |
| 368 /* | |
| 369 * Return NOT_MULTI if c is not a "multi" operator. | |
| 370 * Return MULTI_ONE if c is a single "multi" operator. | |
| 371 * Return MULTI_MULT if c is a multi "multi" operator. | |
| 372 */ | |
| 373 static int | |
| 374 re_multi_type(c) | |
| 375 int c; | |
| 376 { | |
| 377 if (c == Magic('@') || c == Magic('=') || c == Magic('?')) | |
| 378 return MULTI_ONE; | |
| 379 if (c == Magic('*') || c == Magic('+') || c == Magic('{')) | |
| 380 return MULTI_MULT; | |
| 381 return NOT_MULTI; | |
| 382 } | |
| 383 | |
| 384 /* | |
| 385 * Flags to be passed up and down. | |
| 386 */ | |
| 387 #define HASWIDTH 0x1 /* Known never to match null string. */ | |
| 388 #define SIMPLE 0x2 /* Simple enough to be STAR/PLUS operand. */ | |
| 389 #define SPSTART 0x4 /* Starts with * or +. */ | |
| 390 #define HASNL 0x8 /* Contains some \n. */ | |
| 391 #define HASLOOKBH 0x10 /* Contains "\@<=" or "\@<!". */ | |
| 392 #define WORST 0 /* Worst case. */ | |
| 393 | |
| 394 /* | |
| 395 * When regcode is set to this value, code is not emitted and size is computed | |
| 396 * instead. | |
| 397 */ | |
| 398 #define JUST_CALC_SIZE ((char_u *) -1) | |
| 399 | |
| 359 | 400 static char_u *reg_prev_sub = NULL; |
| 401 | |
| 7 | 402 /* |
| 403 * REGEXP_INRANGE contains all characters which are always special in a [] | |
| 404 * range after '\'. | |
| 405 * REGEXP_ABBR contains all characters which act as abbreviations after '\'. | |
| 406 * These are: | |
| 407 * \n - New line (NL). | |
| 408 * \r - Carriage Return (CR). | |
| 409 * \t - Tab (TAB). | |
| 410 * \e - Escape (ESC). | |
| 411 * \b - Backspace (Ctrl_H). | |
| 24 | 412 * \d - Character code in decimal, eg \d123 |
| 413 * \o - Character code in octal, eg \o80 | |
| 414 * \x - Character code in hex, eg \x4a | |
| 415 * \u - Multibyte character code, eg \u20ac | |
| 416 * \U - Long multibyte character code, eg \U12345678 | |
| 7 | 417 */ |
| 418 static char_u REGEXP_INRANGE[] = "]^-n\\"; | |
| 24 | 419 static char_u REGEXP_ABBR[] = "nrtebdoxuU"; |
| 7 | 420 |
| 421 static int backslash_trans __ARGS((int c)); | |
| 167 | 422 static int get_char_class __ARGS((char_u **pp)); |
| 423 static int get_equi_class __ARGS((char_u **pp)); | |
| 424 static void reg_equi_class __ARGS((int c)); | |
| 425 static int get_coll_element __ARGS((char_u **pp)); | |
| 7 | 426 static char_u *skip_anyof __ARGS((char_u *p)); |
| 427 static void init_class_tab __ARGS((void)); | |
| 428 | |
| 429 /* | |
| 430 * Translate '\x' to its control character, except "\n", which is Magic. | |
| 431 */ | |
| 432 static int | |
| 433 backslash_trans(c) | |
| 434 int c; | |
| 435 { | |
| 436 switch (c) | |
| 437 { | |
| 438 case 'r': return CAR; | |
| 439 case 't': return TAB; | |
| 440 case 'e': return ESC; | |
| 441 case 'b': return BS; | |
| 442 } | |
| 443 return c; | |
| 444 } | |
| 445 | |
| 446 /* | |
| 167 | 447 * Check for a character class name "[:name:]". "pp" points to the '['. |
| 7 | 448 * Returns one of the CLASS_ items. CLASS_NONE means that no item was |
| 449 * recognized. Otherwise "pp" is advanced to after the item. | |
| 450 */ | |
| 451 static int | |
| 167 | 452 get_char_class(pp) |
| 7 | 453 char_u **pp; |
| 454 { | |
| 455 static const char *(class_names[]) = | |
| 456 { | |
| 457 "alnum:]", | |
| 458 #define CLASS_ALNUM 0 | |
| 459 "alpha:]", | |
| 460 #define CLASS_ALPHA 1 | |
| 461 "blank:]", | |
| 462 #define CLASS_BLANK 2 | |
| 463 "cntrl:]", | |
| 464 #define CLASS_CNTRL 3 | |
| 465 "digit:]", | |
| 466 #define CLASS_DIGIT 4 | |
| 467 "graph:]", | |
| 468 #define CLASS_GRAPH 5 | |
| 469 "lower:]", | |
| 470 #define CLASS_LOWER 6 | |
| 471 "print:]", | |
| 472 #define CLASS_PRINT 7 | |
| 473 "punct:]", | |
| 474 #define CLASS_PUNCT 8 | |
| 475 "space:]", | |
| 476 #define CLASS_SPACE 9 | |
| 477 "upper:]", | |
| 478 #define CLASS_UPPER 10 | |
| 479 "xdigit:]", | |
| 480 #define CLASS_XDIGIT 11 | |
| 481 "tab:]", | |
| 482 #define CLASS_TAB 12 | |
| 483 "return:]", | |
| 484 #define CLASS_RETURN 13 | |
| 485 "backspace:]", | |
| 486 #define CLASS_BACKSPACE 14 | |
| 487 "escape:]", | |
| 488 #define CLASS_ESCAPE 15 | |
| 489 }; | |
| 490 #define CLASS_NONE 99 | |
| 491 int i; | |
| 492 | |
| 493 if ((*pp)[1] == ':') | |
| 494 { | |
| 1877 | 495 for (i = 0; i < (int)(sizeof(class_names) / sizeof(*class_names)); ++i) |
| 7 | 496 if (STRNCMP(*pp + 2, class_names[i], STRLEN(class_names[i])) == 0) |
| 497 { | |
| 498 *pp += STRLEN(class_names[i]) + 2; | |
| 499 return i; | |
| 500 } | |
| 501 } | |
| 502 return CLASS_NONE; | |
| 503 } | |
| 504 | |
| 505 /* | |
| 506 * Specific version of character class functions. | |
| 507 * Using a table to keep this fast. | |
| 508 */ | |
| 509 static short class_tab[256]; | |
| 510 | |
| 511 #define RI_DIGIT 0x01 | |
| 512 #define RI_HEX 0x02 | |
| 513 #define RI_OCTAL 0x04 | |
| 514 #define RI_WORD 0x08 | |
| 515 #define RI_HEAD 0x10 | |
| 516 #define RI_ALPHA 0x20 | |
| 517 #define RI_LOWER 0x40 | |
| 518 #define RI_UPPER 0x80 | |
| 519 #define RI_WHITE 0x100 | |
| 520 | |
| 521 static void | |
| 522 init_class_tab() | |
| 523 { | |
| 524 int i; | |
| 525 static int done = FALSE; | |
| 526 | |
| 527 if (done) | |
| 528 return; | |
| 529 | |
| 530 for (i = 0; i < 256; ++i) | |
| 531 { | |
| 532 if (i >= '0' && i <= '7') | |
| 533 class_tab[i] = RI_DIGIT + RI_HEX + RI_OCTAL + RI_WORD; | |
| 534 else if (i >= '8' && i <= '9') | |
| 535 class_tab[i] = RI_DIGIT + RI_HEX + RI_WORD; | |
| 536 else if (i >= 'a' && i <= 'f') | |
| 537 class_tab[i] = RI_HEX + RI_WORD + RI_HEAD + RI_ALPHA + RI_LOWER; | |
| 538 #ifdef EBCDIC | |
| 539 else if ((i >= 'g' && i <= 'i') || (i >= 'j' && i <= 'r') | |
| 540 || (i >= 's' && i <= 'z')) | |
| 541 #else | |
| 542 else if (i >= 'g' && i <= 'z') | |
| 543 #endif | |
| 544 class_tab[i] = RI_WORD + RI_HEAD + RI_ALPHA + RI_LOWER; | |
| 545 else if (i >= 'A' && i <= 'F') | |
| 546 class_tab[i] = RI_HEX + RI_WORD + RI_HEAD + RI_ALPHA + RI_UPPER; | |
| 547 #ifdef EBCDIC | |
| 548 else if ((i >= 'G' && i <= 'I') || ( i >= 'J' && i <= 'R') | |
| 549 || (i >= 'S' && i <= 'Z')) | |
| 550 #else | |
| 551 else if (i >= 'G' && i <= 'Z') | |
| 552 #endif | |
| 553 class_tab[i] = RI_WORD + RI_HEAD + RI_ALPHA + RI_UPPER; | |
| 554 else if (i == '_') | |
| 555 class_tab[i] = RI_WORD + RI_HEAD; | |
| 556 else | |
| 557 class_tab[i] = 0; | |
| 558 } | |
| 559 class_tab[' '] |= RI_WHITE; | |
| 560 class_tab['\t'] |= RI_WHITE; | |
| 561 done = TRUE; | |
| 562 } | |
| 563 | |
| 564 #ifdef FEAT_MBYTE | |
| 565 # define ri_digit(c) (c < 0x100 && (class_tab[c] & RI_DIGIT)) | |
| 566 # define ri_hex(c) (c < 0x100 && (class_tab[c] & RI_HEX)) | |
| 567 # define ri_octal(c) (c < 0x100 && (class_tab[c] & RI_OCTAL)) | |
| 568 # define ri_word(c) (c < 0x100 && (class_tab[c] & RI_WORD)) | |
| 569 # define ri_head(c) (c < 0x100 && (class_tab[c] & RI_HEAD)) | |
| 570 # define ri_alpha(c) (c < 0x100 && (class_tab[c] & RI_ALPHA)) | |
| 571 # define ri_lower(c) (c < 0x100 && (class_tab[c] & RI_LOWER)) | |
| 572 # define ri_upper(c) (c < 0x100 && (class_tab[c] & RI_UPPER)) | |
| 573 # define ri_white(c) (c < 0x100 && (class_tab[c] & RI_WHITE)) | |
| 574 #else | |
| 575 # define ri_digit(c) (class_tab[c] & RI_DIGIT) | |
| 576 # define ri_hex(c) (class_tab[c] & RI_HEX) | |
| 577 # define ri_octal(c) (class_tab[c] & RI_OCTAL) | |
| 578 # define ri_word(c) (class_tab[c] & RI_WORD) | |
| 579 # define ri_head(c) (class_tab[c] & RI_HEAD) | |
| 580 # define ri_alpha(c) (class_tab[c] & RI_ALPHA) | |
| 581 # define ri_lower(c) (class_tab[c] & RI_LOWER) | |
| 582 # define ri_upper(c) (class_tab[c] & RI_UPPER) | |
| 583 # define ri_white(c) (class_tab[c] & RI_WHITE) | |
| 584 #endif | |
| 585 | |
| 586 /* flags for regflags */ | |
| 587 #define RF_ICASE 1 /* ignore case */ | |
| 588 #define RF_NOICASE 2 /* don't ignore case */ | |
| 589 #define RF_HASNL 4 /* can match a NL */ | |
| 590 #define RF_ICOMBINE 8 /* ignore combining characters */ | |
| 591 #define RF_LOOKBH 16 /* uses "\@<=" or "\@<!" */ | |
| 592 | |
| 593 /* | |
| 594 * Global work variables for vim_regcomp(). | |
| 595 */ | |
| 596 | |
| 597 static char_u *regparse; /* Input-scan pointer. */ | |
| 598 static int prevchr_len; /* byte length of previous char */ | |
| 599 static int num_complex_braces; /* Complex \{...} count */ | |
| 600 static int regnpar; /* () count. */ | |
| 601 #ifdef FEAT_SYN_HL | |
| 602 static int regnzpar; /* \z() count. */ | |
| 603 static int re_has_z; /* \z item detected */ | |
| 604 #endif | |
| 605 static char_u *regcode; /* Code-emit pointer, or JUST_CALC_SIZE */ | |
| 606 static long regsize; /* Code size. */ | |
| 2010 | 607 static int reg_toolong; /* TRUE when offset out of range */ |
| 7 | 608 static char_u had_endbrace[NSUBEXP]; /* flags, TRUE if end of () found */ |
| 609 static unsigned regflags; /* RF_ flags for prog */ | |
| 610 static long brace_min[10]; /* Minimums for complex brace repeats */ | |
| 611 static long brace_max[10]; /* Maximums for complex brace repeats */ | |
| 612 static int brace_count[10]; /* Current counts for complex brace repeats */ | |
| 613 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 614 static int had_eol; /* TRUE when EOL found by vim_regcomp() */ | |
| 615 #endif | |
| 616 static int one_exactly = FALSE; /* only do one char for EXACTLY */ | |
| 617 | |
| 618 static int reg_magic; /* magicness of the pattern: */ | |
| 619 #define MAGIC_NONE 1 /* "\V" very unmagic */ | |
| 620 #define MAGIC_OFF 2 /* "\M" or 'magic' off */ | |
| 621 #define MAGIC_ON 3 /* "\m" or 'magic' */ | |
| 622 #define MAGIC_ALL 4 /* "\v" very magic */ | |
| 623 | |
| 624 static int reg_string; /* matching with a string instead of a buffer | |
| 625 line */ | |
| 481 | 626 static int reg_strict; /* "[abc" is illegal */ |
| 7 | 627 |
| 628 /* | |
| 629 * META contains all characters that may be magic, except '^' and '$'. | |
| 630 */ | |
| 631 | |
| 632 #ifdef EBCDIC | |
| 633 static char_u META[] = "%&()*+.123456789<=>?@ACDFHIKLMOPSUVWX[_acdfhiklmnopsuvwxz{|~"; | |
| 634 #else | |
| 635 /* META[] is used often enough to justify turning it into a table. */ | |
| 636 static char_u META_flags[] = { | |
| 637 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
| 638 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
| 639 /* % & ( ) * + . */ | |
| 640 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 0, | |
| 641 /* 1 2 3 4 5 6 7 8 9 < = > ? */ | |
| 642 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, | |
| 643 /* @ A C D F H I K L M O */ | |
| 644 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, | |
| 645 /* P S U V W X Z [ _ */ | |
| 646 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, | |
| 647 /* a c d f h i k l m n o */ | |
| 648 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, | |
| 649 /* p s u v w x z { | ~ */ | |
| 650 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1 | |
| 651 }; | |
| 652 #endif | |
| 653 | |
| 4444 | 654 static int curchr; /* currently parsed character */ |
| 655 /* Previous character. Note: prevchr is sometimes -1 when we are not at the | |
| 656 * start, eg in /[ ^I]^ the pattern was never found even if it existed, | |
| 657 * because ^ was taken to be magic -- webb */ | |
| 658 static int prevchr; | |
| 659 static int prevprevchr; /* previous-previous character */ | |
| 660 static int nextchr; /* used for ungetchr() */ | |
| 7 | 661 |
| 662 /* arguments for reg() */ | |
| 663 #define REG_NOPAREN 0 /* toplevel reg() */ | |
| 664 #define REG_PAREN 1 /* \(\) */ | |
| 665 #define REG_ZPAREN 2 /* \z(\) */ | |
| 666 #define REG_NPAREN 3 /* \%(\) */ | |
| 667 | |
|
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668 typedef struct |
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669 { |
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670 char_u *regparse; |
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671 int prevchr_len; |
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672 int curchr; |
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673 int prevchr; |
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674 int prevprevchr; |
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675 int nextchr; |
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676 int at_start; |
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677 int prev_at_start; |
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678 int regnpar; |
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679 } parse_state_T; |
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680 |
| 7 | 681 /* |
| 682 * Forward declarations for vim_regcomp()'s friends. | |
| 683 */ | |
| 684 static void initchr __ARGS((char_u *)); | |
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685 static void save_parse_state __ARGS((parse_state_T *ps)); |
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686 static void restore_parse_state __ARGS((parse_state_T *ps)); |
| 7 | 687 static int getchr __ARGS((void)); |
| 688 static void skipchr_keepstart __ARGS((void)); | |
| 689 static int peekchr __ARGS((void)); | |
| 690 static void skipchr __ARGS((void)); | |
| 691 static void ungetchr __ARGS((void)); | |
| 24 | 692 static int gethexchrs __ARGS((int maxinputlen)); |
| 693 static int getoctchrs __ARGS((void)); | |
| 694 static int getdecchrs __ARGS((void)); | |
| 695 static int coll_get_char __ARGS((void)); | |
| 7 | 696 static void regcomp_start __ARGS((char_u *expr, int flags)); |
| 697 static char_u *reg __ARGS((int, int *)); | |
| 698 static char_u *regbranch __ARGS((int *flagp)); | |
| 699 static char_u *regconcat __ARGS((int *flagp)); | |
| 700 static char_u *regpiece __ARGS((int *)); | |
| 701 static char_u *regatom __ARGS((int *)); | |
| 702 static char_u *regnode __ARGS((int)); | |
| 714 | 703 #ifdef FEAT_MBYTE |
| 704 static int use_multibytecode __ARGS((int c)); | |
| 705 #endif | |
| 7 | 706 static int prog_magic_wrong __ARGS((void)); |
| 707 static char_u *regnext __ARGS((char_u *)); | |
| 708 static void regc __ARGS((int b)); | |
| 709 #ifdef FEAT_MBYTE | |
| 710 static void regmbc __ARGS((int c)); | |
| 2974 | 711 # define REGMBC(x) regmbc(x); |
| 712 # define CASEMBC(x) case x: | |
| 167 | 713 #else |
| 714 # define regmbc(c) regc(c) | |
| 2974 | 715 # define REGMBC(x) |
| 716 # define CASEMBC(x) | |
| 7 | 717 #endif |
| 718 static void reginsert __ARGS((int, char_u *)); | |
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719 static void reginsert_nr __ARGS((int op, long val, char_u *opnd)); |
| 7 | 720 static void reginsert_limits __ARGS((int, long, long, char_u *)); |
| 721 static char_u *re_put_long __ARGS((char_u *pr, long_u val)); | |
| 722 static int read_limits __ARGS((long *, long *)); | |
| 723 static void regtail __ARGS((char_u *, char_u *)); | |
| 724 static void regoptail __ARGS((char_u *, char_u *)); | |
| 725 | |
| 4444 | 726 static regengine_T bt_regengine; |
| 727 static regengine_T nfa_regengine; | |
| 728 | |
| 7 | 729 /* |
| 730 * Return TRUE if compiled regular expression "prog" can match a line break. | |
| 731 */ | |
| 732 int | |
| 733 re_multiline(prog) | |
| 734 regprog_T *prog; | |
| 735 { | |
| 736 return (prog->regflags & RF_HASNL); | |
| 737 } | |
| 738 | |
| 739 /* | |
| 740 * Return TRUE if compiled regular expression "prog" looks before the start | |
| 741 * position (pattern contains "\@<=" or "\@<!"). | |
| 742 */ | |
| 743 int | |
| 744 re_lookbehind(prog) | |
| 745 regprog_T *prog; | |
| 746 { | |
| 747 return (prog->regflags & RF_LOOKBH); | |
| 748 } | |
| 749 | |
| 750 /* | |
| 167 | 751 * Check for an equivalence class name "[=a=]". "pp" points to the '['. |
| 752 * Returns a character representing the class. Zero means that no item was | |
| 753 * recognized. Otherwise "pp" is advanced to after the item. | |
| 754 */ | |
| 755 static int | |
| 756 get_equi_class(pp) | |
| 757 char_u **pp; | |
| 758 { | |
| 759 int c; | |
| 760 int l = 1; | |
| 761 char_u *p = *pp; | |
| 762 | |
| 763 if (p[1] == '=') | |
| 764 { | |
| 765 #ifdef FEAT_MBYTE | |
| 766 if (has_mbyte) | |
| 474 | 767 l = (*mb_ptr2len)(p + 2); |
| 167 | 768 #endif |
| 769 if (p[l + 2] == '=' && p[l + 3] == ']') | |
| 770 { | |
| 771 #ifdef FEAT_MBYTE | |
| 772 if (has_mbyte) | |
| 773 c = mb_ptr2char(p + 2); | |
| 774 else | |
| 775 #endif | |
| 776 c = p[2]; | |
| 777 *pp += l + 4; | |
| 778 return c; | |
| 779 } | |
| 780 } | |
| 781 return 0; | |
| 782 } | |
| 783 | |
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784 #ifdef EBCDIC |
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785 /* |
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786 * Table for equivalence class "c". (IBM-1047) |
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787 */ |
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788 char *EQUIVAL_CLASS_C[16] = { |
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789 "A\x62\x63\x64\x65\x66\x67", |
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790 "C\x68", |
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791 "E\x71\x72\x73\x74", |
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792 "I\x75\x76\x77\x78", |
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793 "N\x69", |
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794 "O\xEB\xEC\xED\xEE\xEF", |
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795 "U\xFB\xFC\xFD\xFE", |
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796 "Y\xBA", |
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797 "a\x42\x43\x44\x45\x46\x47", |
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798 "c\x48", |
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799 "e\x51\x52\x53\x54", |
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800 "i\x55\x56\x57\x58", |
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801 "n\x49", |
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802 "o\xCB\xCC\xCD\xCE\xCF", |
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803 "u\xDB\xDC\xDD\xDE", |
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804 "y\x8D\xDF", |
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805 }; |
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806 #endif |
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807 |
| 167 | 808 /* |
| 809 * Produce the bytes for equivalence class "c". | |
| 810 * Currently only handles latin1, latin9 and utf-8. | |
| 4444 | 811 * NOTE: When changing this function, also change nfa_emit_equi_class() |
| 167 | 812 */ |
| 813 static void | |
| 814 reg_equi_class(c) | |
| 815 int c; | |
| 816 { | |
| 817 #ifdef FEAT_MBYTE | |
| 818 if (enc_utf8 || STRCMP(p_enc, "latin1") == 0 | |
| 492 | 819 || STRCMP(p_enc, "iso-8859-15") == 0) |
| 167 | 820 #endif |
| 821 { | |
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822 #ifdef EBCDIC |
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823 int i; |
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824 |
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825 /* This might be slower than switch/case below. */ |
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parents:
2173
diff
changeset
|
826 for (i = 0; i < 16; i++) |
|
c40cd9aad546
Add patch to improve support of z/OS (OS/390). (Ralf Schandl)
Bram Moolenaar <bram@vim.org>
parents:
2173
diff
changeset
|
827 { |
|
c40cd9aad546
Add patch to improve support of z/OS (OS/390). (Ralf Schandl)
Bram Moolenaar <bram@vim.org>
parents:
2173
diff
changeset
|
828 if (vim_strchr(EQUIVAL_CLASS_C[i], c) != NULL) |
|
c40cd9aad546
Add patch to improve support of z/OS (OS/390). (Ralf Schandl)
Bram Moolenaar <bram@vim.org>
parents:
2173
diff
changeset
|
829 { |
|
c40cd9aad546
Add patch to improve support of z/OS (OS/390). (Ralf Schandl)
Bram Moolenaar <bram@vim.org>
parents:
2173
diff
changeset
|
830 char *p = EQUIVAL_CLASS_C[i]; |
|
c40cd9aad546
Add patch to improve support of z/OS (OS/390). (Ralf Schandl)
Bram Moolenaar <bram@vim.org>
parents:
2173
diff
changeset
|
831 |
|
c40cd9aad546
Add patch to improve support of z/OS (OS/390). (Ralf Schandl)
Bram Moolenaar <bram@vim.org>
parents:
2173
diff
changeset
|
832 while (*p != 0) |
|
c40cd9aad546
Add patch to improve support of z/OS (OS/390). (Ralf Schandl)
Bram Moolenaar <bram@vim.org>
parents:
2173
diff
changeset
|
833 regmbc(*p++); |
|
c40cd9aad546
Add patch to improve support of z/OS (OS/390). (Ralf Schandl)
Bram Moolenaar <bram@vim.org>
parents:
2173
diff
changeset
|
834 return; |
|
c40cd9aad546
Add patch to improve support of z/OS (OS/390). (Ralf Schandl)
Bram Moolenaar <bram@vim.org>
parents:
2173
diff
changeset
|
835 } |
|
c40cd9aad546
Add patch to improve support of z/OS (OS/390). (Ralf Schandl)
Bram Moolenaar <bram@vim.org>
parents:
2173
diff
changeset
|
836 } |
|
c40cd9aad546
Add patch to improve support of z/OS (OS/390). (Ralf Schandl)
Bram Moolenaar <bram@vim.org>
parents:
2173
diff
changeset
|
837 #else |
| 167 | 838 switch (c) |
| 839 { | |
| 236 | 840 case 'A': case '\300': case '\301': case '\302': |
| 2974 | 841 CASEMBC(0x100) CASEMBC(0x102) CASEMBC(0x104) CASEMBC(0x1cd) |
| 842 CASEMBC(0x1de) CASEMBC(0x1e0) CASEMBC(0x1ea2) | |
| 236 | 843 case '\303': case '\304': case '\305': |
| 844 regmbc('A'); regmbc('\300'); regmbc('\301'); | |
| 845 regmbc('\302'); regmbc('\303'); regmbc('\304'); | |
| 846 regmbc('\305'); | |
| 2974 | 847 REGMBC(0x100) REGMBC(0x102) REGMBC(0x104) |
| 848 REGMBC(0x1cd) REGMBC(0x1de) REGMBC(0x1e0) | |
| 849 REGMBC(0x1ea2) | |
| 850 return; | |
| 851 case 'B': CASEMBC(0x1e02) CASEMBC(0x1e06) | |
| 852 regmbc('B'); REGMBC(0x1e02) REGMBC(0x1e06) | |
| 167 | 853 return; |
| 236 | 854 case 'C': case '\307': |
| 2974 | 855 CASEMBC(0x106) CASEMBC(0x108) CASEMBC(0x10a) CASEMBC(0x10c) |
| 236 | 856 regmbc('C'); regmbc('\307'); |
| 2974 | 857 REGMBC(0x106) REGMBC(0x108) REGMBC(0x10a) |
| 858 REGMBC(0x10c) | |
| 859 return; | |
| 860 case 'D': CASEMBC(0x10e) CASEMBC(0x110) CASEMBC(0x1e0a) | |
| 861 CASEMBC(0x1e0e) CASEMBC(0x1e10) | |
| 862 regmbc('D'); REGMBC(0x10e) REGMBC(0x110) | |
| 863 REGMBC(0x1e0a) REGMBC(0x1e0e) REGMBC(0x1e10) | |
| 167 | 864 return; |
| 236 | 865 case 'E': case '\310': case '\311': case '\312': case '\313': |
| 2974 | 866 CASEMBC(0x112) CASEMBC(0x114) CASEMBC(0x116) CASEMBC(0x118) |
| 867 CASEMBC(0x11a) CASEMBC(0x1eba) CASEMBC(0x1ebc) | |
| 236 | 868 regmbc('E'); regmbc('\310'); regmbc('\311'); |
| 869 regmbc('\312'); regmbc('\313'); | |
| 2974 | 870 REGMBC(0x112) REGMBC(0x114) REGMBC(0x116) |
| 871 REGMBC(0x118) REGMBC(0x11a) REGMBC(0x1eba) | |
| 872 REGMBC(0x1ebc) | |
| 873 return; | |
| 874 case 'F': CASEMBC(0x1e1e) | |
| 875 regmbc('F'); REGMBC(0x1e1e) | |
| 876 return; | |
| 877 case 'G': CASEMBC(0x11c) CASEMBC(0x11e) CASEMBC(0x120) | |
| 878 CASEMBC(0x122) CASEMBC(0x1e4) CASEMBC(0x1e6) CASEMBC(0x1f4) | |
| 879 CASEMBC(0x1e20) | |
| 880 regmbc('G'); REGMBC(0x11c) REGMBC(0x11e) | |
| 881 REGMBC(0x120) REGMBC(0x122) REGMBC(0x1e4) | |
| 882 REGMBC(0x1e6) REGMBC(0x1f4) REGMBC(0x1e20) | |
| 883 return; | |
| 884 case 'H': CASEMBC(0x124) CASEMBC(0x126) CASEMBC(0x1e22) | |
| 885 CASEMBC(0x1e26) CASEMBC(0x1e28) | |
| 886 regmbc('H'); REGMBC(0x124) REGMBC(0x126) | |
| 887 REGMBC(0x1e22) REGMBC(0x1e26) REGMBC(0x1e28) | |
| 167 | 888 return; |
| 236 | 889 case 'I': case '\314': case '\315': case '\316': case '\317': |
| 2974 | 890 CASEMBC(0x128) CASEMBC(0x12a) CASEMBC(0x12c) CASEMBC(0x12e) |
| 891 CASEMBC(0x130) CASEMBC(0x1cf) CASEMBC(0x1ec8) | |
| 236 | 892 regmbc('I'); regmbc('\314'); regmbc('\315'); |
| 893 regmbc('\316'); regmbc('\317'); | |
| 2974 | 894 REGMBC(0x128) REGMBC(0x12a) REGMBC(0x12c) |
| 895 REGMBC(0x12e) REGMBC(0x130) REGMBC(0x1cf) | |
| 896 REGMBC(0x1ec8) | |
| 897 return; | |
| 898 case 'J': CASEMBC(0x134) | |
| 899 regmbc('J'); REGMBC(0x134) | |
| 900 return; | |
| 901 case 'K': CASEMBC(0x136) CASEMBC(0x1e8) CASEMBC(0x1e30) | |
| 902 CASEMBC(0x1e34) | |
| 903 regmbc('K'); REGMBC(0x136) REGMBC(0x1e8) | |
| 904 REGMBC(0x1e30) REGMBC(0x1e34) | |
| 905 return; | |
| 906 case 'L': CASEMBC(0x139) CASEMBC(0x13b) CASEMBC(0x13d) | |
| 907 CASEMBC(0x13f) CASEMBC(0x141) CASEMBC(0x1e3a) | |
| 908 regmbc('L'); REGMBC(0x139) REGMBC(0x13b) | |
| 909 REGMBC(0x13d) REGMBC(0x13f) REGMBC(0x141) | |
| 910 REGMBC(0x1e3a) | |
| 911 return; | |
| 912 case 'M': CASEMBC(0x1e3e) CASEMBC(0x1e40) | |
| 913 regmbc('M'); REGMBC(0x1e3e) REGMBC(0x1e40) | |
| 167 | 914 return; |
| 236 | 915 case 'N': case '\321': |
| 2974 | 916 CASEMBC(0x143) CASEMBC(0x145) CASEMBC(0x147) CASEMBC(0x1e44) |
| 917 CASEMBC(0x1e48) | |
| 236 | 918 regmbc('N'); regmbc('\321'); |
| 2974 | 919 REGMBC(0x143) REGMBC(0x145) REGMBC(0x147) |
| 920 REGMBC(0x1e44) REGMBC(0x1e48) | |
| 167 | 921 return; |
| 236 | 922 case 'O': case '\322': case '\323': case '\324': case '\325': |
| 2974 | 923 case '\326': case '\330': |
| 924 CASEMBC(0x14c) CASEMBC(0x14e) CASEMBC(0x150) CASEMBC(0x1a0) | |
| 925 CASEMBC(0x1d1) CASEMBC(0x1ea) CASEMBC(0x1ec) CASEMBC(0x1ece) | |
| 236 | 926 regmbc('O'); regmbc('\322'); regmbc('\323'); |
| 927 regmbc('\324'); regmbc('\325'); regmbc('\326'); | |
| 2974 | 928 regmbc('\330'); |
| 929 REGMBC(0x14c) REGMBC(0x14e) REGMBC(0x150) | |
| 930 REGMBC(0x1a0) REGMBC(0x1d1) REGMBC(0x1ea) | |
| 931 REGMBC(0x1ec) REGMBC(0x1ece) | |
| 932 return; | |
| 933 case 'P': case 0x1e54: case 0x1e56: | |
| 934 regmbc('P'); REGMBC(0x1e54) REGMBC(0x1e56) | |
| 935 return; | |
| 936 case 'R': CASEMBC(0x154) CASEMBC(0x156) CASEMBC(0x158) | |
| 937 CASEMBC(0x1e58) CASEMBC(0x1e5e) | |
| 938 regmbc('R'); REGMBC(0x154) REGMBC(0x156) REGMBC(0x158) | |
| 939 REGMBC(0x1e58) REGMBC(0x1e5e) | |
| 940 return; | |
| 941 case 'S': CASEMBC(0x15a) CASEMBC(0x15c) CASEMBC(0x15e) | |
| 942 CASEMBC(0x160) CASEMBC(0x1e60) | |
| 943 regmbc('S'); REGMBC(0x15a) REGMBC(0x15c) | |
| 944 REGMBC(0x15e) REGMBC(0x160) REGMBC(0x1e60) | |
| 945 return; | |
| 946 case 'T': CASEMBC(0x162) CASEMBC(0x164) CASEMBC(0x166) | |
| 947 CASEMBC(0x1e6a) CASEMBC(0x1e6e) | |
| 948 regmbc('T'); REGMBC(0x162) REGMBC(0x164) | |
| 949 REGMBC(0x166) REGMBC(0x1e6a) REGMBC(0x1e6e) | |
| 167 | 950 return; |
| 236 | 951 case 'U': case '\331': case '\332': case '\333': case '\334': |
| 2974 | 952 CASEMBC(0x168) CASEMBC(0x16a) CASEMBC(0x16c) CASEMBC(0x16e) |
| 953 CASEMBC(0x170) CASEMBC(0x172) CASEMBC(0x1af) CASEMBC(0x1d3) | |
| 954 CASEMBC(0x1ee6) | |
| 236 | 955 regmbc('U'); regmbc('\331'); regmbc('\332'); |
| 956 regmbc('\333'); regmbc('\334'); | |
| 2974 | 957 REGMBC(0x168) REGMBC(0x16a) REGMBC(0x16c) |
| 958 REGMBC(0x16e) REGMBC(0x170) REGMBC(0x172) | |
| 959 REGMBC(0x1af) REGMBC(0x1d3) REGMBC(0x1ee6) | |
| 960 return; | |
| 961 case 'V': CASEMBC(0x1e7c) | |
| 962 regmbc('V'); REGMBC(0x1e7c) | |
| 963 return; | |
| 964 case 'W': CASEMBC(0x174) CASEMBC(0x1e80) CASEMBC(0x1e82) | |
| 965 CASEMBC(0x1e84) CASEMBC(0x1e86) | |
| 966 regmbc('W'); REGMBC(0x174) REGMBC(0x1e80) | |
| 967 REGMBC(0x1e82) REGMBC(0x1e84) REGMBC(0x1e86) | |
| 968 return; | |
| 969 case 'X': CASEMBC(0x1e8a) CASEMBC(0x1e8c) | |
| 970 regmbc('X'); REGMBC(0x1e8a) REGMBC(0x1e8c) | |
| 167 | 971 return; |
| 236 | 972 case 'Y': case '\335': |
| 2974 | 973 CASEMBC(0x176) CASEMBC(0x178) CASEMBC(0x1e8e) CASEMBC(0x1ef2) |
| 974 CASEMBC(0x1ef6) CASEMBC(0x1ef8) | |
| 236 | 975 regmbc('Y'); regmbc('\335'); |
| 2974 | 976 REGMBC(0x176) REGMBC(0x178) REGMBC(0x1e8e) |
| 977 REGMBC(0x1ef2) REGMBC(0x1ef6) REGMBC(0x1ef8) | |
| 978 return; | |
| 979 case 'Z': CASEMBC(0x179) CASEMBC(0x17b) CASEMBC(0x17d) | |
| 980 CASEMBC(0x1b5) CASEMBC(0x1e90) CASEMBC(0x1e94) | |
| 981 regmbc('Z'); REGMBC(0x179) REGMBC(0x17b) | |
| 982 REGMBC(0x17d) REGMBC(0x1b5) REGMBC(0x1e90) | |
| 983 REGMBC(0x1e94) | |
| 167 | 984 return; |
| 236 | 985 case 'a': case '\340': case '\341': case '\342': |
| 986 case '\343': case '\344': case '\345': | |
| 2974 | 987 CASEMBC(0x101) CASEMBC(0x103) CASEMBC(0x105) CASEMBC(0x1ce) |
| 988 CASEMBC(0x1df) CASEMBC(0x1e1) CASEMBC(0x1ea3) | |
| 236 | 989 regmbc('a'); regmbc('\340'); regmbc('\341'); |
| 990 regmbc('\342'); regmbc('\343'); regmbc('\344'); | |
| 991 regmbc('\345'); | |
| 2974 | 992 REGMBC(0x101) REGMBC(0x103) REGMBC(0x105) |
| 993 REGMBC(0x1ce) REGMBC(0x1df) REGMBC(0x1e1) | |
| 994 REGMBC(0x1ea3) | |
| 995 return; | |
| 996 case 'b': CASEMBC(0x1e03) CASEMBC(0x1e07) | |
| 997 regmbc('b'); REGMBC(0x1e03) REGMBC(0x1e07) | |
| 167 | 998 return; |
| 236 | 999 case 'c': case '\347': |
| 2974 | 1000 CASEMBC(0x107) CASEMBC(0x109) CASEMBC(0x10b) CASEMBC(0x10d) |
| 236 | 1001 regmbc('c'); regmbc('\347'); |
| 2974 | 1002 REGMBC(0x107) REGMBC(0x109) REGMBC(0x10b) |
| 1003 REGMBC(0x10d) | |
| 1004 return; | |
| 1005 case 'd': CASEMBC(0x10f) CASEMBC(0x111) CASEMBC(0x1d0b) | |
| 1006 CASEMBC(0x1e11) | |
| 1007 regmbc('d'); REGMBC(0x10f) REGMBC(0x111) | |
| 1008 REGMBC(0x1e0b) REGMBC(0x01e0f) REGMBC(0x1e11) | |
| 167 | 1009 return; |
| 236 | 1010 case 'e': case '\350': case '\351': case '\352': case '\353': |
| 2974 | 1011 CASEMBC(0x113) CASEMBC(0x115) CASEMBC(0x117) CASEMBC(0x119) |
| 1012 CASEMBC(0x11b) CASEMBC(0x1ebb) CASEMBC(0x1ebd) | |
| 236 | 1013 regmbc('e'); regmbc('\350'); regmbc('\351'); |
| 1014 regmbc('\352'); regmbc('\353'); | |
| 2974 | 1015 REGMBC(0x113) REGMBC(0x115) REGMBC(0x117) |
| 1016 REGMBC(0x119) REGMBC(0x11b) REGMBC(0x1ebb) | |
| 1017 REGMBC(0x1ebd) | |
| 1018 return; | |
| 1019 case 'f': CASEMBC(0x1e1f) | |
| 1020 regmbc('f'); REGMBC(0x1e1f) | |
| 1021 return; | |
| 1022 case 'g': CASEMBC(0x11d) CASEMBC(0x11f) CASEMBC(0x121) | |
| 1023 CASEMBC(0x123) CASEMBC(0x1e5) CASEMBC(0x1e7) CASEMBC(0x1f5) | |
| 1024 CASEMBC(0x1e21) | |
| 1025 regmbc('g'); REGMBC(0x11d) REGMBC(0x11f) | |
| 1026 REGMBC(0x121) REGMBC(0x123) REGMBC(0x1e5) | |
| 1027 REGMBC(0x1e7) REGMBC(0x1f5) REGMBC(0x1e21) | |
| 1028 return; | |
| 1029 case 'h': CASEMBC(0x125) CASEMBC(0x127) CASEMBC(0x1e23) | |
| 1030 CASEMBC(0x1e27) CASEMBC(0x1e29) CASEMBC(0x1e96) | |
| 1031 regmbc('h'); REGMBC(0x125) REGMBC(0x127) | |
| 1032 REGMBC(0x1e23) REGMBC(0x1e27) REGMBC(0x1e29) | |
| 1033 REGMBC(0x1e96) | |
| 167 | 1034 return; |
| 236 | 1035 case 'i': case '\354': case '\355': case '\356': case '\357': |
| 2974 | 1036 CASEMBC(0x129) CASEMBC(0x12b) CASEMBC(0x12d) CASEMBC(0x12f) |
| 1037 CASEMBC(0x1d0) CASEMBC(0x1ec9) | |
| 236 | 1038 regmbc('i'); regmbc('\354'); regmbc('\355'); |
| 1039 regmbc('\356'); regmbc('\357'); | |
| 2974 | 1040 REGMBC(0x129) REGMBC(0x12b) REGMBC(0x12d) |
| 1041 REGMBC(0x12f) REGMBC(0x1d0) REGMBC(0x1ec9) | |
| 1042 return; | |
| 1043 case 'j': CASEMBC(0x135) CASEMBC(0x1f0) | |
| 1044 regmbc('j'); REGMBC(0x135) REGMBC(0x1f0) | |
| 1045 return; | |
| 1046 case 'k': CASEMBC(0x137) CASEMBC(0x1e9) CASEMBC(0x1e31) | |
| 1047 CASEMBC(0x1e35) | |
| 1048 regmbc('k'); REGMBC(0x137) REGMBC(0x1e9) | |
| 1049 REGMBC(0x1e31) REGMBC(0x1e35) | |
| 1050 return; | |
| 1051 case 'l': CASEMBC(0x13a) CASEMBC(0x13c) CASEMBC(0x13e) | |
| 1052 CASEMBC(0x140) CASEMBC(0x142) CASEMBC(0x1e3b) | |
| 1053 regmbc('l'); REGMBC(0x13a) REGMBC(0x13c) | |
| 1054 REGMBC(0x13e) REGMBC(0x140) REGMBC(0x142) | |
| 1055 REGMBC(0x1e3b) | |
| 1056 return; | |
| 1057 case 'm': CASEMBC(0x1e3f) CASEMBC(0x1e41) | |
| 1058 regmbc('m'); REGMBC(0x1e3f) REGMBC(0x1e41) | |
| 167 | 1059 return; |
| 236 | 1060 case 'n': case '\361': |
| 2974 | 1061 CASEMBC(0x144) CASEMBC(0x146) CASEMBC(0x148) CASEMBC(0x149) |
| 1062 CASEMBC(0x1e45) CASEMBC(0x1e49) | |
| 236 | 1063 regmbc('n'); regmbc('\361'); |
| 2974 | 1064 REGMBC(0x144) REGMBC(0x146) REGMBC(0x148) |
| 1065 REGMBC(0x149) REGMBC(0x1e45) REGMBC(0x1e49) | |
| 167 | 1066 return; |
| 236 | 1067 case 'o': case '\362': case '\363': case '\364': case '\365': |
| 2974 | 1068 case '\366': case '\370': |
| 1069 CASEMBC(0x14d) CASEMBC(0x14f) CASEMBC(0x151) CASEMBC(0x1a1) | |
| 1070 CASEMBC(0x1d2) CASEMBC(0x1eb) CASEMBC(0x1ed) CASEMBC(0x1ecf) | |
| 236 | 1071 regmbc('o'); regmbc('\362'); regmbc('\363'); |
| 1072 regmbc('\364'); regmbc('\365'); regmbc('\366'); | |
| 2974 | 1073 regmbc('\370'); |
| 1074 REGMBC(0x14d) REGMBC(0x14f) REGMBC(0x151) | |
| 1075 REGMBC(0x1a1) REGMBC(0x1d2) REGMBC(0x1eb) | |
| 1076 REGMBC(0x1ed) REGMBC(0x1ecf) | |
| 1077 return; | |
| 1078 case 'p': CASEMBC(0x1e55) CASEMBC(0x1e57) | |
| 1079 regmbc('p'); REGMBC(0x1e55) REGMBC(0x1e57) | |
| 1080 return; | |
| 1081 case 'r': CASEMBC(0x155) CASEMBC(0x157) CASEMBC(0x159) | |
| 1082 CASEMBC(0x1e59) CASEMBC(0x1e5f) | |
| 1083 regmbc('r'); REGMBC(0x155) REGMBC(0x157) REGMBC(0x159) | |
| 1084 REGMBC(0x1e59) REGMBC(0x1e5f) | |
| 1085 return; | |
| 1086 case 's': CASEMBC(0x15b) CASEMBC(0x15d) CASEMBC(0x15f) | |
| 1087 CASEMBC(0x161) CASEMBC(0x1e61) | |
| 1088 regmbc('s'); REGMBC(0x15b) REGMBC(0x15d) | |
| 1089 REGMBC(0x15f) REGMBC(0x161) REGMBC(0x1e61) | |
| 1090 return; | |
| 1091 case 't': CASEMBC(0x163) CASEMBC(0x165) CASEMBC(0x167) | |
| 1092 CASEMBC(0x1e6b) CASEMBC(0x1e6f) CASEMBC(0x1e97) | |
| 1093 regmbc('t'); REGMBC(0x163) REGMBC(0x165) REGMBC(0x167) | |
| 1094 REGMBC(0x1e6b) REGMBC(0x1e6f) REGMBC(0x1e97) | |
| 167 | 1095 return; |
| 236 | 1096 case 'u': case '\371': case '\372': case '\373': case '\374': |
| 2974 | 1097 CASEMBC(0x169) CASEMBC(0x16b) CASEMBC(0x16d) CASEMBC(0x16f) |
| 1098 CASEMBC(0x171) CASEMBC(0x173) CASEMBC(0x1b0) CASEMBC(0x1d4) | |
| 1099 CASEMBC(0x1ee7) | |
| 236 | 1100 regmbc('u'); regmbc('\371'); regmbc('\372'); |
| 1101 regmbc('\373'); regmbc('\374'); | |
| 2974 | 1102 REGMBC(0x169) REGMBC(0x16b) REGMBC(0x16d) |
| 1103 REGMBC(0x16f) REGMBC(0x171) REGMBC(0x173) | |
| 1104 REGMBC(0x1b0) REGMBC(0x1d4) REGMBC(0x1ee7) | |
| 1105 return; | |
| 1106 case 'v': CASEMBC(0x1e7d) | |
| 1107 regmbc('v'); REGMBC(0x1e7d) | |
| 1108 return; | |
| 1109 case 'w': CASEMBC(0x175) CASEMBC(0x1e81) CASEMBC(0x1e83) | |
| 1110 CASEMBC(0x1e85) CASEMBC(0x1e87) CASEMBC(0x1e98) | |
| 1111 regmbc('w'); REGMBC(0x175) REGMBC(0x1e81) | |
| 1112 REGMBC(0x1e83) REGMBC(0x1e85) REGMBC(0x1e87) | |
| 1113 REGMBC(0x1e98) | |
| 1114 return; | |
| 1115 case 'x': CASEMBC(0x1e8b) CASEMBC(0x1e8d) | |
| 1116 regmbc('x'); REGMBC(0x1e8b) REGMBC(0x1e8d) | |
| 167 | 1117 return; |
| 236 | 1118 case 'y': case '\375': case '\377': |
| 2974 | 1119 CASEMBC(0x177) CASEMBC(0x1e8f) CASEMBC(0x1e99) |
| 1120 CASEMBC(0x1ef3) CASEMBC(0x1ef7) CASEMBC(0x1ef9) | |
| 236 | 1121 regmbc('y'); regmbc('\375'); regmbc('\377'); |
| 2974 | 1122 REGMBC(0x177) REGMBC(0x1e8f) REGMBC(0x1e99) |
| 1123 REGMBC(0x1ef3) REGMBC(0x1ef7) REGMBC(0x1ef9) | |
| 1124 return; | |
| 1125 case 'z': CASEMBC(0x17a) CASEMBC(0x17c) CASEMBC(0x17e) | |
| 1126 CASEMBC(0x1b6) CASEMBC(0x1e91) CASEMBC(0x1e95) | |
| 1127 regmbc('z'); REGMBC(0x17a) REGMBC(0x17c) | |
| 1128 REGMBC(0x17e) REGMBC(0x1b6) REGMBC(0x1e91) | |
| 1129 REGMBC(0x1e95) | |
| 167 | 1130 return; |
| 1131 } | |
|
2247
c40cd9aad546
Add patch to improve support of z/OS (OS/390). (Ralf Schandl)
Bram Moolenaar <bram@vim.org>
parents:
2173
diff
changeset
|
1132 #endif |
| 167 | 1133 } |
| 1134 regmbc(c); | |
| 1135 } | |
| 1136 | |
| 1137 /* | |
| 1138 * Check for a collating element "[.a.]". "pp" points to the '['. | |
| 1139 * Returns a character. Zero means that no item was recognized. Otherwise | |
| 1140 * "pp" is advanced to after the item. | |
| 1141 * Currently only single characters are recognized! | |
| 1142 */ | |
| 1143 static int | |
| 1144 get_coll_element(pp) | |
| 1145 char_u **pp; | |
| 1146 { | |
| 1147 int c; | |
| 1148 int l = 1; | |
| 1149 char_u *p = *pp; | |
| 1150 | |
| 1151 if (p[1] == '.') | |
| 1152 { | |
| 1153 #ifdef FEAT_MBYTE | |
| 1154 if (has_mbyte) | |
| 474 | 1155 l = (*mb_ptr2len)(p + 2); |
| 167 | 1156 #endif |
| 1157 if (p[l + 2] == '.' && p[l + 3] == ']') | |
| 1158 { | |
| 1159 #ifdef FEAT_MBYTE | |
| 1160 if (has_mbyte) | |
| 1161 c = mb_ptr2char(p + 2); | |
| 1162 else | |
| 1163 #endif | |
| 1164 c = p[2]; | |
| 1165 *pp += l + 4; | |
| 1166 return c; | |
| 1167 } | |
| 1168 } | |
| 1169 return 0; | |
| 1170 } | |
| 1171 | |
| 1172 | |
| 1173 /* | |
| 1174 * Skip over a "[]" range. | |
| 1175 * "p" must point to the character after the '['. | |
| 1176 * The returned pointer is on the matching ']', or the terminating NUL. | |
| 1177 */ | |
| 1178 static char_u * | |
| 1179 skip_anyof(p) | |
| 1180 char_u *p; | |
| 1181 { | |
| 1182 int cpo_lit; /* 'cpoptions' contains 'l' flag */ | |
| 1183 int cpo_bsl; /* 'cpoptions' contains '\' flag */ | |
| 1184 #ifdef FEAT_MBYTE | |
| 1185 int l; | |
| 1186 #endif | |
| 1187 | |
| 410 | 1188 cpo_lit = vim_strchr(p_cpo, CPO_LITERAL) != NULL; |
| 1189 cpo_bsl = vim_strchr(p_cpo, CPO_BACKSL) != NULL; | |
| 167 | 1190 |
| 1191 if (*p == '^') /* Complement of range. */ | |
| 1192 ++p; | |
| 1193 if (*p == ']' || *p == '-') | |
| 1194 ++p; | |
| 1195 while (*p != NUL && *p != ']') | |
| 1196 { | |
| 1197 #ifdef FEAT_MBYTE | |
| 474 | 1198 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) |
| 167 | 1199 p += l; |
| 1200 else | |
| 1201 #endif | |
| 1202 if (*p == '-') | |
| 1203 { | |
| 1204 ++p; | |
| 1205 if (*p != ']' && *p != NUL) | |
| 1206 mb_ptr_adv(p); | |
| 1207 } | |
| 1208 else if (*p == '\\' | |
| 1209 && !cpo_bsl | |
| 1210 && (vim_strchr(REGEXP_INRANGE, p[1]) != NULL | |
| 1211 || (!cpo_lit && vim_strchr(REGEXP_ABBR, p[1]) != NULL))) | |
| 1212 p += 2; | |
| 1213 else if (*p == '[') | |
| 1214 { | |
| 1215 if (get_char_class(&p) == CLASS_NONE | |
| 1216 && get_equi_class(&p) == 0 | |
| 1217 && get_coll_element(&p) == 0) | |
| 1218 ++p; /* It was not a class name */ | |
| 1219 } | |
| 1220 else | |
| 1221 ++p; | |
| 1222 } | |
| 1223 | |
| 1224 return p; | |
| 1225 } | |
| 1226 | |
| 1227 /* | |
| 7 | 1228 * Skip past regular expression. |
| 153 | 1229 * Stop at end of "startp" or where "dirc" is found ('/', '?', etc). |
| 7 | 1230 * Take care of characters with a backslash in front of it. |
| 1231 * Skip strings inside [ and ]. | |
| 1232 * When "newp" is not NULL and "dirc" is '?', make an allocated copy of the | |
| 1233 * expression and change "\?" to "?". If "*newp" is not NULL the expression | |
| 1234 * is changed in-place. | |
| 1235 */ | |
| 1236 char_u * | |
| 1237 skip_regexp(startp, dirc, magic, newp) | |
| 1238 char_u *startp; | |
| 1239 int dirc; | |
| 1240 int magic; | |
| 1241 char_u **newp; | |
| 1242 { | |
| 1243 int mymagic; | |
| 1244 char_u *p = startp; | |
| 1245 | |
| 1246 if (magic) | |
| 1247 mymagic = MAGIC_ON; | |
| 1248 else | |
| 1249 mymagic = MAGIC_OFF; | |
| 1250 | |
| 39 | 1251 for (; p[0] != NUL; mb_ptr_adv(p)) |
| 7 | 1252 { |
| 1253 if (p[0] == dirc) /* found end of regexp */ | |
| 1254 break; | |
| 1255 if ((p[0] == '[' && mymagic >= MAGIC_ON) | |
| 1256 || (p[0] == '\\' && p[1] == '[' && mymagic <= MAGIC_OFF)) | |
| 1257 { | |
| 1258 p = skip_anyof(p + 1); | |
| 1259 if (p[0] == NUL) | |
| 1260 break; | |
| 1261 } | |
| 1262 else if (p[0] == '\\' && p[1] != NUL) | |
| 1263 { | |
| 1264 if (dirc == '?' && newp != NULL && p[1] == '?') | |
| 1265 { | |
| 1266 /* change "\?" to "?", make a copy first. */ | |
| 1267 if (*newp == NULL) | |
| 1268 { | |
| 1269 *newp = vim_strsave(startp); | |
| 1270 if (*newp != NULL) | |
| 1271 p = *newp + (p - startp); | |
| 1272 } | |
| 1273 if (*newp != NULL) | |
| 1621 | 1274 STRMOVE(p, p + 1); |
| 7 | 1275 else |
| 1276 ++p; | |
| 1277 } | |
| 1278 else | |
| 1279 ++p; /* skip next character */ | |
| 1280 if (*p == 'v') | |
| 1281 mymagic = MAGIC_ALL; | |
| 1282 else if (*p == 'V') | |
| 1283 mymagic = MAGIC_NONE; | |
| 1284 } | |
| 1285 } | |
| 1286 return p; | |
| 1287 } | |
| 1288 | |
| 4444 | 1289 static regprog_T *bt_regcomp __ARGS((char_u *expr, int re_flags)); |
| 1290 | |
| 7 | 1291 /* |
| 4444 | 1292 * bt_regcomp() - compile a regular expression into internal code for the |
| 1293 * traditional back track matcher. | |
| 41 | 1294 * Returns the program in allocated space. Returns NULL for an error. |
| 7 | 1295 * |
| 1296 * We can't allocate space until we know how big the compiled form will be, | |
| 1297 * but we can't compile it (and thus know how big it is) until we've got a | |
| 1298 * place to put the code. So we cheat: we compile it twice, once with code | |
| 1299 * generation turned off and size counting turned on, and once "for real". | |
| 1300 * This also means that we don't allocate space until we are sure that the | |
| 1301 * thing really will compile successfully, and we never have to move the | |
| 1302 * code and thus invalidate pointers into it. (Note that it has to be in | |
| 1303 * one piece because vim_free() must be able to free it all.) | |
| 1304 * | |
| 1305 * Whether upper/lower case is to be ignored is decided when executing the | |
| 1306 * program, it does not matter here. | |
| 1307 * | |
| 1308 * Beware that the optimization-preparation code in here knows about some | |
| 1309 * of the structure of the compiled regexp. | |
| 1310 * "re_flags": RE_MAGIC and/or RE_STRING. | |
| 1311 */ | |
| 4444 | 1312 static regprog_T * |
| 1313 bt_regcomp(expr, re_flags) | |
| 7 | 1314 char_u *expr; |
| 1315 int re_flags; | |
| 1316 { | |
| 4444 | 1317 bt_regprog_T *r; |
| 7 | 1318 char_u *scan; |
| 1319 char_u *longest; | |
| 1320 int len; | |
| 1321 int flags; | |
| 1322 | |
| 1323 if (expr == NULL) | |
| 1324 EMSG_RET_NULL(_(e_null)); | |
| 1325 | |
| 1326 init_class_tab(); | |
| 1327 | |
| 1328 /* | |
| 1329 * First pass: determine size, legality. | |
| 1330 */ | |
| 1331 regcomp_start(expr, re_flags); | |
| 1332 regcode = JUST_CALC_SIZE; | |
| 1333 regc(REGMAGIC); | |
| 1334 if (reg(REG_NOPAREN, &flags) == NULL) | |
| 1335 return NULL; | |
| 1336 | |
| 1337 /* Small enough for pointer-storage convention? */ | |
| 1338 #ifdef SMALL_MALLOC /* 16 bit storage allocation */ | |
| 1339 if (regsize >= 65536L - 256L) | |
| 1340 EMSG_RET_NULL(_("E339: Pattern too long")); | |
| 1341 #endif | |
| 1342 | |
| 1343 /* Allocate space. */ | |
| 4444 | 1344 r = (bt_regprog_T *)lalloc(sizeof(bt_regprog_T) + regsize, TRUE); |
| 7 | 1345 if (r == NULL) |
| 1346 return NULL; | |
| 1347 | |
| 1348 /* | |
| 1349 * Second pass: emit code. | |
| 1350 */ | |
| 1351 regcomp_start(expr, re_flags); | |
| 1352 regcode = r->program; | |
| 1353 regc(REGMAGIC); | |
| 2010 | 1354 if (reg(REG_NOPAREN, &flags) == NULL || reg_toolong) |
| 7 | 1355 { |
| 1356 vim_free(r); | |
| 2010 | 1357 if (reg_toolong) |
| 1358 EMSG_RET_NULL(_("E339: Pattern too long")); | |
| 7 | 1359 return NULL; |
| 1360 } | |
| 1361 | |
| 1362 /* Dig out information for optimizations. */ | |
| 1363 r->regstart = NUL; /* Worst-case defaults. */ | |
| 1364 r->reganch = 0; | |
| 1365 r->regmust = NULL; | |
| 1366 r->regmlen = 0; | |
| 1367 r->regflags = regflags; | |
| 1368 if (flags & HASNL) | |
| 1369 r->regflags |= RF_HASNL; | |
| 1370 if (flags & HASLOOKBH) | |
| 1371 r->regflags |= RF_LOOKBH; | |
| 1372 #ifdef FEAT_SYN_HL | |
| 1373 /* Remember whether this pattern has any \z specials in it. */ | |
| 1374 r->reghasz = re_has_z; | |
| 1375 #endif | |
| 1376 scan = r->program + 1; /* First BRANCH. */ | |
| 1377 if (OP(regnext(scan)) == END) /* Only one top-level choice. */ | |
| 1378 { | |
| 1379 scan = OPERAND(scan); | |
| 1380 | |
| 1381 /* Starting-point info. */ | |
| 1382 if (OP(scan) == BOL || OP(scan) == RE_BOF) | |
| 1383 { | |
| 1384 r->reganch++; | |
| 1385 scan = regnext(scan); | |
| 1386 } | |
| 1387 | |
| 1388 if (OP(scan) == EXACTLY) | |
| 1389 { | |
| 1390 #ifdef FEAT_MBYTE | |
| 1391 if (has_mbyte) | |
| 1392 r->regstart = (*mb_ptr2char)(OPERAND(scan)); | |
| 1393 else | |
| 1394 #endif | |
| 1395 r->regstart = *OPERAND(scan); | |
| 1396 } | |
| 1397 else if ((OP(scan) == BOW | |
| 1398 || OP(scan) == EOW | |
| 1399 || OP(scan) == NOTHING | |
| 1400 || OP(scan) == MOPEN + 0 || OP(scan) == NOPEN | |
| 1401 || OP(scan) == MCLOSE + 0 || OP(scan) == NCLOSE) | |
| 1402 && OP(regnext(scan)) == EXACTLY) | |
| 1403 { | |
| 1404 #ifdef FEAT_MBYTE | |
| 1405 if (has_mbyte) | |
| 1406 r->regstart = (*mb_ptr2char)(OPERAND(regnext(scan))); | |
| 1407 else | |
| 1408 #endif | |
| 1409 r->regstart = *OPERAND(regnext(scan)); | |
| 1410 } | |
| 1411 | |
| 1412 /* | |
| 1413 * If there's something expensive in the r.e., find the longest | |
| 1414 * literal string that must appear and make it the regmust. Resolve | |
| 1415 * ties in favor of later strings, since the regstart check works | |
| 1416 * with the beginning of the r.e. and avoiding duplication | |
| 1417 * strengthens checking. Not a strong reason, but sufficient in the | |
| 1418 * absence of others. | |
| 1419 */ | |
| 1420 /* | |
| 1421 * When the r.e. starts with BOW, it is faster to look for a regmust | |
| 1422 * first. Used a lot for "#" and "*" commands. (Added by mool). | |
| 1423 */ | |
| 1424 if ((flags & SPSTART || OP(scan) == BOW || OP(scan) == EOW) | |
| 1425 && !(flags & HASNL)) | |
| 1426 { | |
| 1427 longest = NULL; | |
| 1428 len = 0; | |
| 1429 for (; scan != NULL; scan = regnext(scan)) | |
| 1430 if (OP(scan) == EXACTLY && STRLEN(OPERAND(scan)) >= (size_t)len) | |
| 1431 { | |
| 1432 longest = OPERAND(scan); | |
| 1433 len = (int)STRLEN(OPERAND(scan)); | |
| 1434 } | |
| 1435 r->regmust = longest; | |
| 1436 r->regmlen = len; | |
| 1437 } | |
| 1438 } | |
| 4444 | 1439 #ifdef BT_REGEXP_DUMP |
| 7 | 1440 regdump(expr, r); |
| 1441 #endif | |
| 4444 | 1442 r->engine = &bt_regengine; |
| 1443 return (regprog_T *)r; | |
| 7 | 1444 } |
| 1445 | |
| 1446 /* | |
| 1447 * Setup to parse the regexp. Used once to get the length and once to do it. | |
| 1448 */ | |
| 1449 static void | |
| 1450 regcomp_start(expr, re_flags) | |
| 1451 char_u *expr; | |
| 1452 int re_flags; /* see vim_regcomp() */ | |
| 1453 { | |
| 1454 initchr(expr); | |
| 1455 if (re_flags & RE_MAGIC) | |
| 1456 reg_magic = MAGIC_ON; | |
| 1457 else | |
| 1458 reg_magic = MAGIC_OFF; | |
| 1459 reg_string = (re_flags & RE_STRING); | |
| 481 | 1460 reg_strict = (re_flags & RE_STRICT); |
| 7 | 1461 |
| 1462 num_complex_braces = 0; | |
| 1463 regnpar = 1; | |
| 1464 vim_memset(had_endbrace, 0, sizeof(had_endbrace)); | |
| 1465 #ifdef FEAT_SYN_HL | |
| 1466 regnzpar = 1; | |
| 1467 re_has_z = 0; | |
| 1468 #endif | |
| 1469 regsize = 0L; | |
| 2010 | 1470 reg_toolong = FALSE; |
| 7 | 1471 regflags = 0; |
| 1472 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 1473 had_eol = FALSE; | |
| 1474 #endif | |
| 1475 } | |
| 1476 | |
| 1477 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 1478 /* | |
| 1479 * Check if during the previous call to vim_regcomp the EOL item "$" has been | |
| 1480 * found. This is messy, but it works fine. | |
| 1481 */ | |
| 1482 int | |
| 1483 vim_regcomp_had_eol() | |
| 1484 { | |
| 1485 return had_eol; | |
| 1486 } | |
| 1487 #endif | |
| 1488 | |
| 1489 /* | |
| 4444 | 1490 * Parse regular expression, i.e. main body or parenthesized thing. |
| 7 | 1491 * |
| 1492 * Caller must absorb opening parenthesis. | |
| 1493 * | |
| 1494 * Combining parenthesis handling with the base level of regular expression | |
| 1495 * is a trifle forced, but the need to tie the tails of the branches to what | |
| 1496 * follows makes it hard to avoid. | |
| 1497 */ | |
| 1498 static char_u * | |
| 1499 reg(paren, flagp) | |
| 1500 int paren; /* REG_NOPAREN, REG_PAREN, REG_NPAREN or REG_ZPAREN */ | |
| 1501 int *flagp; | |
| 1502 { | |
| 1503 char_u *ret; | |
| 1504 char_u *br; | |
| 1505 char_u *ender; | |
| 1506 int parno = 0; | |
| 1507 int flags; | |
| 1508 | |
| 1509 *flagp = HASWIDTH; /* Tentatively. */ | |
| 1510 | |
| 1511 #ifdef FEAT_SYN_HL | |
| 1512 if (paren == REG_ZPAREN) | |
| 1513 { | |
| 1514 /* Make a ZOPEN node. */ | |
| 1515 if (regnzpar >= NSUBEXP) | |
| 1516 EMSG_RET_NULL(_("E50: Too many \\z(")); | |
| 1517 parno = regnzpar; | |
| 1518 regnzpar++; | |
| 1519 ret = regnode(ZOPEN + parno); | |
| 1520 } | |
| 1521 else | |
| 1522 #endif | |
| 1523 if (paren == REG_PAREN) | |
| 1524 { | |
| 1525 /* Make a MOPEN node. */ | |
| 1526 if (regnpar >= NSUBEXP) | |
| 4444 | 1527 EMSG2_RET_NULL(_("E51: Too many %s("), reg_magic == MAGIC_ALL); |
| 7 | 1528 parno = regnpar; |
| 1529 ++regnpar; | |
| 1530 ret = regnode(MOPEN + parno); | |
| 1531 } | |
| 1532 else if (paren == REG_NPAREN) | |
| 1533 { | |
| 1534 /* Make a NOPEN node. */ | |
| 1535 ret = regnode(NOPEN); | |
| 1536 } | |
| 1537 else | |
| 1538 ret = NULL; | |
| 1539 | |
| 1540 /* Pick up the branches, linking them together. */ | |
| 1541 br = regbranch(&flags); | |
| 1542 if (br == NULL) | |
| 1543 return NULL; | |
| 1544 if (ret != NULL) | |
| 1545 regtail(ret, br); /* [MZ]OPEN -> first. */ | |
| 1546 else | |
| 1547 ret = br; | |
| 1548 /* If one of the branches can be zero-width, the whole thing can. | |
| 1549 * If one of the branches has * at start or matches a line-break, the | |
| 1550 * whole thing can. */ | |
| 1551 if (!(flags & HASWIDTH)) | |
| 1552 *flagp &= ~HASWIDTH; | |
| 1553 *flagp |= flags & (SPSTART | HASNL | HASLOOKBH); | |
| 1554 while (peekchr() == Magic('|')) | |
| 1555 { | |
| 1556 skipchr(); | |
| 1557 br = regbranch(&flags); | |
| 2010 | 1558 if (br == NULL || reg_toolong) |
| 7 | 1559 return NULL; |
| 1560 regtail(ret, br); /* BRANCH -> BRANCH. */ | |
| 1561 if (!(flags & HASWIDTH)) | |
| 1562 *flagp &= ~HASWIDTH; | |
| 1563 *flagp |= flags & (SPSTART | HASNL | HASLOOKBH); | |
| 1564 } | |
| 1565 | |
| 1566 /* Make a closing node, and hook it on the end. */ | |
| 1567 ender = regnode( | |
| 1568 #ifdef FEAT_SYN_HL | |
| 1569 paren == REG_ZPAREN ? ZCLOSE + parno : | |
| 1570 #endif | |
| 1571 paren == REG_PAREN ? MCLOSE + parno : | |
| 1572 paren == REG_NPAREN ? NCLOSE : END); | |
| 1573 regtail(ret, ender); | |
| 1574 | |
| 1575 /* Hook the tails of the branches to the closing node. */ | |
| 1576 for (br = ret; br != NULL; br = regnext(br)) | |
| 1577 regoptail(br, ender); | |
| 1578 | |
| 1579 /* Check for proper termination. */ | |
| 1580 if (paren != REG_NOPAREN && getchr() != Magic(')')) | |
| 1581 { | |
| 1582 #ifdef FEAT_SYN_HL | |
| 1583 if (paren == REG_ZPAREN) | |
| 308 | 1584 EMSG_RET_NULL(_("E52: Unmatched \\z(")); |
| 7 | 1585 else |
| 1586 #endif | |
| 1587 if (paren == REG_NPAREN) | |
| 4444 | 1588 EMSG2_RET_NULL(_(e_unmatchedpp), reg_magic == MAGIC_ALL); |
| 7 | 1589 else |
| 4444 | 1590 EMSG2_RET_NULL(_(e_unmatchedp), reg_magic == MAGIC_ALL); |
| 7 | 1591 } |
| 1592 else if (paren == REG_NOPAREN && peekchr() != NUL) | |
| 1593 { | |
| 1594 if (curchr == Magic(')')) | |
| 4444 | 1595 EMSG2_RET_NULL(_(e_unmatchedpar), reg_magic == MAGIC_ALL); |
| 7 | 1596 else |
| 308 | 1597 EMSG_RET_NULL(_(e_trailing)); /* "Can't happen". */ |
| 7 | 1598 /* NOTREACHED */ |
| 1599 } | |
| 1600 /* | |
| 1601 * Here we set the flag allowing back references to this set of | |
| 1602 * parentheses. | |
| 1603 */ | |
| 1604 if (paren == REG_PAREN) | |
| 1605 had_endbrace[parno] = TRUE; /* have seen the close paren */ | |
| 1606 return ret; | |
| 1607 } | |
| 1608 | |
| 1609 /* | |
| 4444 | 1610 * Parse one alternative of an | operator. |
| 7 | 1611 * Implements the & operator. |
| 1612 */ | |
| 1613 static char_u * | |
| 1614 regbranch(flagp) | |
| 1615 int *flagp; | |
| 1616 { | |
| 1617 char_u *ret; | |
| 1618 char_u *chain = NULL; | |
| 1619 char_u *latest; | |
| 1620 int flags; | |
| 1621 | |
| 1622 *flagp = WORST | HASNL; /* Tentatively. */ | |
| 1623 | |
| 1624 ret = regnode(BRANCH); | |
| 1625 for (;;) | |
| 1626 { | |
| 1627 latest = regconcat(&flags); | |
| 1628 if (latest == NULL) | |
| 1629 return NULL; | |
| 1630 /* If one of the branches has width, the whole thing has. If one of | |
| 1631 * the branches anchors at start-of-line, the whole thing does. | |
| 1632 * If one of the branches uses look-behind, the whole thing does. */ | |
| 1633 *flagp |= flags & (HASWIDTH | SPSTART | HASLOOKBH); | |
| 1634 /* If one of the branches doesn't match a line-break, the whole thing | |
| 1635 * doesn't. */ | |
| 1636 *flagp &= ~HASNL | (flags & HASNL); | |
| 1637 if (chain != NULL) | |
| 1638 regtail(chain, latest); | |
| 1639 if (peekchr() != Magic('&')) | |
| 1640 break; | |
| 1641 skipchr(); | |
| 1642 regtail(latest, regnode(END)); /* operand ends */ | |
| 2010 | 1643 if (reg_toolong) |
| 1644 break; | |
| 7 | 1645 reginsert(MATCH, latest); |
| 1646 chain = latest; | |
| 1647 } | |
| 1648 | |
| 1649 return ret; | |
| 1650 } | |
| 1651 | |
| 1652 /* | |
| 4444 | 1653 * Parse one alternative of an | or & operator. |
| 7 | 1654 * Implements the concatenation operator. |
| 1655 */ | |
| 1656 static char_u * | |
| 1657 regconcat(flagp) | |
| 1658 int *flagp; | |
| 1659 { | |
| 1660 char_u *first = NULL; | |
| 1661 char_u *chain = NULL; | |
| 1662 char_u *latest; | |
| 1663 int flags; | |
| 1664 int cont = TRUE; | |
| 1665 | |
| 1666 *flagp = WORST; /* Tentatively. */ | |
| 1667 | |
| 1668 while (cont) | |
| 1669 { | |
| 1670 switch (peekchr()) | |
| 1671 { | |
| 1672 case NUL: | |
| 1673 case Magic('|'): | |
| 1674 case Magic('&'): | |
| 1675 case Magic(')'): | |
| 1676 cont = FALSE; | |
| 1677 break; | |
| 1678 case Magic('Z'): | |
| 1679 #ifdef FEAT_MBYTE | |
| 1680 regflags |= RF_ICOMBINE; | |
| 1681 #endif | |
| 1682 skipchr_keepstart(); | |
| 1683 break; | |
| 1684 case Magic('c'): | |
| 1685 regflags |= RF_ICASE; | |
| 1686 skipchr_keepstart(); | |
| 1687 break; | |
| 1688 case Magic('C'): | |
| 1689 regflags |= RF_NOICASE; | |
| 1690 skipchr_keepstart(); | |
| 1691 break; | |
| 1692 case Magic('v'): | |
| 1693 reg_magic = MAGIC_ALL; | |
| 1694 skipchr_keepstart(); | |
| 1695 curchr = -1; | |
| 1696 break; | |
| 1697 case Magic('m'): | |
| 1698 reg_magic = MAGIC_ON; | |
| 1699 skipchr_keepstart(); | |
| 1700 curchr = -1; | |
| 1701 break; | |
| 1702 case Magic('M'): | |
| 1703 reg_magic = MAGIC_OFF; | |
| 1704 skipchr_keepstart(); | |
| 1705 curchr = -1; | |
| 1706 break; | |
| 1707 case Magic('V'): | |
| 1708 reg_magic = MAGIC_NONE; | |
| 1709 skipchr_keepstart(); | |
| 1710 curchr = -1; | |
| 1711 break; | |
| 1712 default: | |
| 1713 latest = regpiece(&flags); | |
| 2010 | 1714 if (latest == NULL || reg_toolong) |
| 7 | 1715 return NULL; |
| 1716 *flagp |= flags & (HASWIDTH | HASNL | HASLOOKBH); | |
| 1717 if (chain == NULL) /* First piece. */ | |
| 1718 *flagp |= flags & SPSTART; | |
| 1719 else | |
| 1720 regtail(chain, latest); | |
| 1721 chain = latest; | |
| 1722 if (first == NULL) | |
| 1723 first = latest; | |
| 1724 break; | |
| 1725 } | |
| 1726 } | |
| 1727 if (first == NULL) /* Loop ran zero times. */ | |
| 1728 first = regnode(NOTHING); | |
| 1729 return first; | |
| 1730 } | |
| 1731 | |
| 1732 /* | |
| 4444 | 1733 * Parse something followed by possible [*+=]. |
| 7 | 1734 * |
| 1735 * Note that the branching code sequences used for = and the general cases | |
| 1736 * of * and + are somewhat optimized: they use the same NOTHING node as | |
| 1737 * both the endmarker for their branch list and the body of the last branch. | |
| 1738 * It might seem that this node could be dispensed with entirely, but the | |
| 1739 * endmarker role is not redundant. | |
| 1740 */ | |
| 1741 static char_u * | |
| 1742 regpiece(flagp) | |
| 1743 int *flagp; | |
| 1744 { | |
| 1745 char_u *ret; | |
| 1746 int op; | |
| 1747 char_u *next; | |
| 1748 int flags; | |
| 1749 long minval; | |
| 1750 long maxval; | |
| 1751 | |
| 1752 ret = regatom(&flags); | |
| 1753 if (ret == NULL) | |
| 1754 return NULL; | |
| 1755 | |
| 1756 op = peekchr(); | |
| 1757 if (re_multi_type(op) == NOT_MULTI) | |
| 1758 { | |
| 1759 *flagp = flags; | |
| 1760 return ret; | |
| 1761 } | |
| 1762 /* default flags */ | |
| 1763 *flagp = (WORST | SPSTART | (flags & (HASNL | HASLOOKBH))); | |
| 1764 | |
| 1765 skipchr(); | |
| 1766 switch (op) | |
| 1767 { | |
| 1768 case Magic('*'): | |
| 1769 if (flags & SIMPLE) | |
| 1770 reginsert(STAR, ret); | |
| 1771 else | |
| 1772 { | |
| 1773 /* Emit x* as (x&|), where & means "self". */ | |
| 1774 reginsert(BRANCH, ret); /* Either x */ | |
| 1775 regoptail(ret, regnode(BACK)); /* and loop */ | |
| 1776 regoptail(ret, ret); /* back */ | |
| 1777 regtail(ret, regnode(BRANCH)); /* or */ | |
| 1778 regtail(ret, regnode(NOTHING)); /* null. */ | |
| 1779 } | |
| 1780 break; | |
| 1781 | |
| 1782 case Magic('+'): | |
| 1783 if (flags & SIMPLE) | |
| 1784 reginsert(PLUS, ret); | |
| 1785 else | |
| 1786 { | |
| 1787 /* Emit x+ as x(&|), where & means "self". */ | |
| 1788 next = regnode(BRANCH); /* Either */ | |
| 1789 regtail(ret, next); | |
| 233 | 1790 regtail(regnode(BACK), ret); /* loop back */ |
| 7 | 1791 regtail(next, regnode(BRANCH)); /* or */ |
| 1792 regtail(ret, regnode(NOTHING)); /* null. */ | |
| 1793 } | |
| 1794 *flagp = (WORST | HASWIDTH | (flags & (HASNL | HASLOOKBH))); | |
| 1795 break; | |
| 1796 | |
| 1797 case Magic('@'): | |
| 1798 { | |
| 1799 int lop = END; | |
|
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1800 int nr; |
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1801 |
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1802 nr = getdecchrs(); |
| 7 | 1803 switch (no_Magic(getchr())) |
| 1804 { | |
| 1805 case '=': lop = MATCH; break; /* \@= */ | |
| 1806 case '!': lop = NOMATCH; break; /* \@! */ | |
| 1807 case '>': lop = SUBPAT; break; /* \@> */ | |
| 1808 case '<': switch (no_Magic(getchr())) | |
| 1809 { | |
| 1810 case '=': lop = BEHIND; break; /* \@<= */ | |
| 1811 case '!': lop = NOBEHIND; break; /* \@<! */ | |
| 1812 } | |
| 1813 } | |
| 1814 if (lop == END) | |
| 4444 | 1815 EMSG2_RET_NULL(_("E59: invalid character after %s@"), |
| 7 | 1816 reg_magic == MAGIC_ALL); |
| 1817 /* Look behind must match with behind_pos. */ | |
| 1818 if (lop == BEHIND || lop == NOBEHIND) | |
| 1819 { | |
| 1820 regtail(ret, regnode(BHPOS)); | |
| 1821 *flagp |= HASLOOKBH; | |
| 1822 } | |
| 1823 regtail(ret, regnode(END)); /* operand ends */ | |
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1824 if (lop == BEHIND || lop == NOBEHIND) |
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1825 { |
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1826 if (nr < 0) |
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1827 nr = 0; /* no limit is same as zero limit */ |
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1828 reginsert_nr(lop, nr, ret); |
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1829 } |
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1830 else |
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1831 reginsert(lop, ret); |
| 7 | 1832 break; |
| 1833 } | |
| 1834 | |
| 1835 case Magic('?'): | |
| 1836 case Magic('='): | |
| 1837 /* Emit x= as (x|) */ | |
| 1838 reginsert(BRANCH, ret); /* Either x */ | |
| 1839 regtail(ret, regnode(BRANCH)); /* or */ | |
| 1840 next = regnode(NOTHING); /* null. */ | |
| 1841 regtail(ret, next); | |
| 1842 regoptail(ret, next); | |
| 1843 break; | |
| 1844 | |
| 1845 case Magic('{'): | |
| 1846 if (!read_limits(&minval, &maxval)) | |
| 1847 return NULL; | |
| 1848 if (flags & SIMPLE) | |
| 1849 { | |
| 1850 reginsert(BRACE_SIMPLE, ret); | |
| 1851 reginsert_limits(BRACE_LIMITS, minval, maxval, ret); | |
| 1852 } | |
| 1853 else | |
| 1854 { | |
| 1855 if (num_complex_braces >= 10) | |
| 4444 | 1856 EMSG2_RET_NULL(_("E60: Too many complex %s{...}s"), |
| 7 | 1857 reg_magic == MAGIC_ALL); |
| 1858 reginsert(BRACE_COMPLEX + num_complex_braces, ret); | |
| 1859 regoptail(ret, regnode(BACK)); | |
| 1860 regoptail(ret, ret); | |
| 1861 reginsert_limits(BRACE_LIMITS, minval, maxval, ret); | |
| 1862 ++num_complex_braces; | |
| 1863 } | |
| 1864 if (minval > 0 && maxval > 0) | |
| 1865 *flagp = (HASWIDTH | (flags & (HASNL | HASLOOKBH))); | |
| 1866 break; | |
| 1867 } | |
| 1868 if (re_multi_type(peekchr()) != NOT_MULTI) | |
| 1869 { | |
| 1870 /* Can't have a multi follow a multi. */ | |
| 1871 if (peekchr() == Magic('*')) | |
| 1872 sprintf((char *)IObuff, _("E61: Nested %s*"), | |
| 1873 reg_magic >= MAGIC_ON ? "" : "\\"); | |
| 1874 else | |
| 1875 sprintf((char *)IObuff, _("E62: Nested %s%c"), | |
| 1876 reg_magic == MAGIC_ALL ? "" : "\\", no_Magic(peekchr())); | |
| 1877 EMSG_RET_NULL(IObuff); | |
| 1878 } | |
| 1879 | |
| 1880 return ret; | |
| 1881 } | |
| 1882 | |
| 4444 | 1883 /* When making changes to classchars also change nfa_classcodes. */ |
| 1884 static char_u *classchars = (char_u *)".iIkKfFpPsSdDxXoOwWhHaAlLuU"; | |
| 1885 static int classcodes[] = { | |
| 1886 ANY, IDENT, SIDENT, KWORD, SKWORD, | |
| 1887 FNAME, SFNAME, PRINT, SPRINT, | |
| 1888 WHITE, NWHITE, DIGIT, NDIGIT, | |
| 1889 HEX, NHEX, OCTAL, NOCTAL, | |
| 1890 WORD, NWORD, HEAD, NHEAD, | |
| 1891 ALPHA, NALPHA, LOWER, NLOWER, | |
| 1892 UPPER, NUPPER | |
| 1893 }; | |
| 1894 | |
| 7 | 1895 /* |
| 4444 | 1896 * Parse the lowest level. |
| 7 | 1897 * |
| 1898 * Optimization: gobbles an entire sequence of ordinary characters so that | |
| 1899 * it can turn them into a single node, which is smaller to store and | |
| 1900 * faster to run. Don't do this when one_exactly is set. | |
| 1901 */ | |
| 1902 static char_u * | |
| 1903 regatom(flagp) | |
| 1904 int *flagp; | |
| 1905 { | |
| 1906 char_u *ret; | |
| 1907 int flags; | |
| 1908 int cpo_lit; /* 'cpoptions' contains 'l' flag */ | |
| 167 | 1909 int cpo_bsl; /* 'cpoptions' contains '\' flag */ |
| 7 | 1910 int c; |
| 1911 char_u *p; | |
| 1912 int extra = 0; | |
| 1913 | |
| 1914 *flagp = WORST; /* Tentatively. */ | |
| 410 | 1915 cpo_lit = vim_strchr(p_cpo, CPO_LITERAL) != NULL; |
| 1916 cpo_bsl = vim_strchr(p_cpo, CPO_BACKSL) != NULL; | |
| 7 | 1917 |
| 1918 c = getchr(); | |
| 1919 switch (c) | |
| 1920 { | |
| 1921 case Magic('^'): | |
| 1922 ret = regnode(BOL); | |
| 1923 break; | |
| 1924 | |
| 1925 case Magic('$'): | |
| 1926 ret = regnode(EOL); | |
| 1927 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 1928 had_eol = TRUE; | |
| 1929 #endif | |
| 1930 break; | |
| 1931 | |
| 1932 case Magic('<'): | |
| 1933 ret = regnode(BOW); | |
| 1934 break; | |
| 1935 | |
| 1936 case Magic('>'): | |
| 1937 ret = regnode(EOW); | |
| 1938 break; | |
| 1939 | |
| 1940 case Magic('_'): | |
| 1941 c = no_Magic(getchr()); | |
| 1942 if (c == '^') /* "\_^" is start-of-line */ | |
| 1943 { | |
| 1944 ret = regnode(BOL); | |
| 1945 break; | |
| 1946 } | |
| 1947 if (c == '$') /* "\_$" is end-of-line */ | |
| 1948 { | |
| 1949 ret = regnode(EOL); | |
| 1950 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 1951 had_eol = TRUE; | |
| 1952 #endif | |
| 1953 break; | |
| 1954 } | |
| 1955 | |
| 1956 extra = ADD_NL; | |
| 1957 *flagp |= HASNL; | |
| 1958 | |
| 1959 /* "\_[" is character range plus newline */ | |
| 1960 if (c == '[') | |
| 1961 goto collection; | |
| 1962 | |
| 1963 /* "\_x" is character class plus newline */ | |
| 1964 /*FALLTHROUGH*/ | |
| 1965 | |
| 1966 /* | |
| 1967 * Character classes. | |
| 1968 */ | |
| 1969 case Magic('.'): | |
| 1970 case Magic('i'): | |
| 1971 case Magic('I'): | |
| 1972 case Magic('k'): | |
| 1973 case Magic('K'): | |
| 1974 case Magic('f'): | |
| 1975 case Magic('F'): | |
| 1976 case Magic('p'): | |
| 1977 case Magic('P'): | |
| 1978 case Magic('s'): | |
| 1979 case Magic('S'): | |
| 1980 case Magic('d'): | |
| 1981 case Magic('D'): | |
| 1982 case Magic('x'): | |
| 1983 case Magic('X'): | |
| 1984 case Magic('o'): | |
| 1985 case Magic('O'): | |
| 1986 case Magic('w'): | |
| 1987 case Magic('W'): | |
| 1988 case Magic('h'): | |
| 1989 case Magic('H'): | |
| 1990 case Magic('a'): | |
| 1991 case Magic('A'): | |
| 1992 case Magic('l'): | |
| 1993 case Magic('L'): | |
| 1994 case Magic('u'): | |
| 1995 case Magic('U'): | |
| 1996 p = vim_strchr(classchars, no_Magic(c)); | |
| 1997 if (p == NULL) | |
| 1998 EMSG_RET_NULL(_("E63: invalid use of \\_")); | |
| 714 | 1999 #ifdef FEAT_MBYTE |
| 2000 /* When '.' is followed by a composing char ignore the dot, so that | |
| 2001 * the composing char is matched here. */ | |
| 2002 if (enc_utf8 && c == Magic('.') && utf_iscomposing(peekchr())) | |
| 2003 { | |
| 2004 c = getchr(); | |
| 2005 goto do_multibyte; | |
| 2006 } | |
| 2007 #endif | |
| 7 | 2008 ret = regnode(classcodes[p - classchars] + extra); |
| 2009 *flagp |= HASWIDTH | SIMPLE; | |
| 2010 break; | |
| 2011 | |
| 2012 case Magic('n'): | |
| 2013 if (reg_string) | |
| 2014 { | |
| 2015 /* In a string "\n" matches a newline character. */ | |
| 2016 ret = regnode(EXACTLY); | |
| 2017 regc(NL); | |
| 2018 regc(NUL); | |
| 2019 *flagp |= HASWIDTH | SIMPLE; | |
| 2020 } | |
| 2021 else | |
| 2022 { | |
| 2023 /* In buffer text "\n" matches the end of a line. */ | |
| 2024 ret = regnode(NEWL); | |
| 2025 *flagp |= HASWIDTH | HASNL; | |
| 2026 } | |
| 2027 break; | |
| 2028 | |
| 2029 case Magic('('): | |
| 2030 if (one_exactly) | |
| 2031 EMSG_ONE_RET_NULL; | |
| 2032 ret = reg(REG_PAREN, &flags); | |
| 2033 if (ret == NULL) | |
| 2034 return NULL; | |
| 2035 *flagp |= flags & (HASWIDTH | SPSTART | HASNL | HASLOOKBH); | |
| 2036 break; | |
| 2037 | |
| 2038 case NUL: | |
| 2039 case Magic('|'): | |
| 2040 case Magic('&'): | |
| 2041 case Magic(')'): | |
| 1468 | 2042 if (one_exactly) |
| 2043 EMSG_ONE_RET_NULL; | |
| 7 | 2044 EMSG_RET_NULL(_(e_internal)); /* Supposed to be caught earlier. */ |
| 2045 /* NOTREACHED */ | |
| 2046 | |
| 2047 case Magic('='): | |
| 2048 case Magic('?'): | |
| 2049 case Magic('+'): | |
| 2050 case Magic('@'): | |
| 2051 case Magic('{'): | |
| 2052 case Magic('*'): | |
| 2053 c = no_Magic(c); | |
| 2054 sprintf((char *)IObuff, _("E64: %s%c follows nothing"), | |
| 2055 (c == '*' ? reg_magic >= MAGIC_ON : reg_magic == MAGIC_ALL) | |
| 2056 ? "" : "\\", c); | |
| 2057 EMSG_RET_NULL(IObuff); | |
| 2058 /* NOTREACHED */ | |
| 2059 | |
| 2060 case Magic('~'): /* previous substitute pattern */ | |
| 359 | 2061 if (reg_prev_sub != NULL) |
| 7 | 2062 { |
| 2063 char_u *lp; | |
| 2064 | |
| 2065 ret = regnode(EXACTLY); | |
| 2066 lp = reg_prev_sub; | |
| 2067 while (*lp != NUL) | |
| 2068 regc(*lp++); | |
| 2069 regc(NUL); | |
| 2070 if (*reg_prev_sub != NUL) | |
| 2071 { | |
| 2072 *flagp |= HASWIDTH; | |
| 2073 if ((lp - reg_prev_sub) == 1) | |
| 2074 *flagp |= SIMPLE; | |
| 2075 } | |
| 2076 } | |
| 2077 else | |
| 2078 EMSG_RET_NULL(_(e_nopresub)); | |
| 2079 break; | |
| 2080 | |
| 2081 case Magic('1'): | |
| 2082 case Magic('2'): | |
| 2083 case Magic('3'): | |
| 2084 case Magic('4'): | |
| 2085 case Magic('5'): | |
| 2086 case Magic('6'): | |
| 2087 case Magic('7'): | |
| 2088 case Magic('8'): | |
| 2089 case Magic('9'): | |
| 2090 { | |
| 2091 int refnum; | |
| 2092 | |
| 2093 refnum = c - Magic('0'); | |
| 2094 /* | |
| 2095 * Check if the back reference is legal. We must have seen the | |
| 2096 * close brace. | |
| 2097 * TODO: Should also check that we don't refer to something | |
| 2098 * that is repeated (+*=): what instance of the repetition | |
| 2099 * should we match? | |
| 2100 */ | |
| 2101 if (!had_endbrace[refnum]) | |
| 2102 { | |
| 2103 /* Trick: check if "@<=" or "@<!" follows, in which case | |
| 2104 * the \1 can appear before the referenced match. */ | |
| 2105 for (p = regparse; *p != NUL; ++p) | |
| 2106 if (p[0] == '@' && p[1] == '<' | |
| 2107 && (p[2] == '!' || p[2] == '=')) | |
| 2108 break; | |
| 2109 if (*p == NUL) | |
| 2110 EMSG_RET_NULL(_("E65: Illegal back reference")); | |
| 2111 } | |
| 2112 ret = regnode(BACKREF + refnum); | |
| 2113 } | |
| 2114 break; | |
| 2115 | |
| 2116 case Magic('z'): | |
| 2117 { | |
| 2118 c = no_Magic(getchr()); | |
| 2119 switch (c) | |
| 2120 { | |
| 741 | 2121 #ifdef FEAT_SYN_HL |
| 7 | 2122 case '(': if (reg_do_extmatch != REX_SET) |
| 2123 EMSG_RET_NULL(_("E66: \\z( not allowed here")); | |
| 2124 if (one_exactly) | |
| 2125 EMSG_ONE_RET_NULL; | |
| 2126 ret = reg(REG_ZPAREN, &flags); | |
| 2127 if (ret == NULL) | |
| 2128 return NULL; | |
| 2129 *flagp |= flags & (HASWIDTH|SPSTART|HASNL|HASLOOKBH); | |
| 2130 re_has_z = REX_SET; | |
| 2131 break; | |
| 2132 | |
| 2133 case '1': | |
| 2134 case '2': | |
| 2135 case '3': | |
| 2136 case '4': | |
| 2137 case '5': | |
| 2138 case '6': | |
| 2139 case '7': | |
| 2140 case '8': | |
| 2141 case '9': if (reg_do_extmatch != REX_USE) | |
| 2142 EMSG_RET_NULL(_("E67: \\z1 et al. not allowed here")); | |
| 2143 ret = regnode(ZREF + c - '0'); | |
| 2144 re_has_z = REX_USE; | |
| 2145 break; | |
| 741 | 2146 #endif |
| 7 | 2147 |
| 2148 case 's': ret = regnode(MOPEN + 0); | |
| 2149 break; | |
| 2150 | |
| 2151 case 'e': ret = regnode(MCLOSE + 0); | |
| 2152 break; | |
| 2153 | |
| 2154 default: EMSG_RET_NULL(_("E68: Invalid character after \\z")); | |
| 2155 } | |
| 2156 } | |
| 2157 break; | |
| 2158 | |
| 2159 case Magic('%'): | |
| 2160 { | |
| 2161 c = no_Magic(getchr()); | |
| 2162 switch (c) | |
| 2163 { | |
| 2164 /* () without a back reference */ | |
| 2165 case '(': | |
| 2166 if (one_exactly) | |
| 2167 EMSG_ONE_RET_NULL; | |
| 2168 ret = reg(REG_NPAREN, &flags); | |
| 2169 if (ret == NULL) | |
| 2170 return NULL; | |
| 2171 *flagp |= flags & (HASWIDTH | SPSTART | HASNL | HASLOOKBH); | |
| 2172 break; | |
| 2173 | |
| 2174 /* Catch \%^ and \%$ regardless of where they appear in the | |
| 2175 * pattern -- regardless of whether or not it makes sense. */ | |
| 2176 case '^': | |
| 2177 ret = regnode(RE_BOF); | |
| 2178 break; | |
| 2179 | |
| 2180 case '$': | |
| 2181 ret = regnode(RE_EOF); | |
| 2182 break; | |
| 2183 | |
| 2184 case '#': | |
| 2185 ret = regnode(CURSOR); | |
| 2186 break; | |
| 2187 | |
| 639 | 2188 case 'V': |
| 2189 ret = regnode(RE_VISUAL); | |
| 2190 break; | |
| 2191 | |
| 7 | 2192 /* \%[abc]: Emit as a list of branches, all ending at the last |
| 2193 * branch which matches nothing. */ | |
| 2194 case '[': | |
| 2195 if (one_exactly) /* doesn't nest */ | |
| 2196 EMSG_ONE_RET_NULL; | |
| 2197 { | |
| 2198 char_u *lastbranch; | |
| 2199 char_u *lastnode = NULL; | |
| 2200 char_u *br; | |
| 2201 | |
| 2202 ret = NULL; | |
| 2203 while ((c = getchr()) != ']') | |
| 2204 { | |
| 2205 if (c == NUL) | |
| 4444 | 2206 EMSG2_RET_NULL(_("E69: Missing ] after %s%%["), |
| 7 | 2207 reg_magic == MAGIC_ALL); |
| 2208 br = regnode(BRANCH); | |
| 2209 if (ret == NULL) | |
| 2210 ret = br; | |
| 2211 else | |
| 2212 regtail(lastnode, br); | |
| 2213 | |
| 2214 ungetchr(); | |
| 2215 one_exactly = TRUE; | |
| 2216 lastnode = regatom(flagp); | |
| 2217 one_exactly = FALSE; | |
| 2218 if (lastnode == NULL) | |
| 2219 return NULL; | |
| 2220 } | |
| 2221 if (ret == NULL) | |
| 4444 | 2222 EMSG2_RET_NULL(_("E70: Empty %s%%[]"), |
| 7 | 2223 reg_magic == MAGIC_ALL); |
| 2224 lastbranch = regnode(BRANCH); | |
| 2225 br = regnode(NOTHING); | |
| 2226 if (ret != JUST_CALC_SIZE) | |
| 2227 { | |
| 2228 regtail(lastnode, br); | |
| 2229 regtail(lastbranch, br); | |
| 2230 /* connect all branches to the NOTHING | |
| 2231 * branch at the end */ | |
| 2232 for (br = ret; br != lastnode; ) | |
| 2233 { | |
| 2234 if (OP(br) == BRANCH) | |
| 2235 { | |
| 2236 regtail(br, lastbranch); | |
| 2237 br = OPERAND(br); | |
| 2238 } | |
| 2239 else | |
| 2240 br = regnext(br); | |
| 2241 } | |
| 2242 } | |
| 1701 | 2243 *flagp &= ~(HASWIDTH | SIMPLE); |
| 7 | 2244 break; |
| 2245 } | |
| 2246 | |
| 24 | 2247 case 'd': /* %d123 decimal */ |
| 2248 case 'o': /* %o123 octal */ | |
| 2249 case 'x': /* %xab hex 2 */ | |
| 2250 case 'u': /* %uabcd hex 4 */ | |
| 2251 case 'U': /* %U1234abcd hex 8 */ | |
| 2252 { | |
| 2253 int i; | |
| 2254 | |
| 2255 switch (c) | |
| 2256 { | |
| 2257 case 'd': i = getdecchrs(); break; | |
| 2258 case 'o': i = getoctchrs(); break; | |
| 2259 case 'x': i = gethexchrs(2); break; | |
| 2260 case 'u': i = gethexchrs(4); break; | |
| 2261 case 'U': i = gethexchrs(8); break; | |
| 2262 default: i = -1; break; | |
| 2263 } | |
| 2264 | |
| 2265 if (i < 0) | |
| 4444 | 2266 EMSG2_RET_NULL( |
| 24 | 2267 _("E678: Invalid character after %s%%[dxouU]"), |
| 2268 reg_magic == MAGIC_ALL); | |
| 714 | 2269 #ifdef FEAT_MBYTE |
| 2270 if (use_multibytecode(i)) | |
| 2271 ret = regnode(MULTIBYTECODE); | |
| 2272 else | |
| 2273 #endif | |
| 2274 ret = regnode(EXACTLY); | |
| 24 | 2275 if (i == 0) |
| 2276 regc(0x0a); | |
| 2277 else | |
| 2278 #ifdef FEAT_MBYTE | |
| 2279 regmbc(i); | |
| 2280 #else | |
| 2281 regc(i); | |
| 2282 #endif | |
| 2283 regc(NUL); | |
| 2284 *flagp |= HASWIDTH; | |
| 2285 break; | |
| 2286 } | |
| 2287 | |
| 7 | 2288 default: |
| 639 | 2289 if (VIM_ISDIGIT(c) || c == '<' || c == '>' |
| 2290 || c == '\'') | |
| 7 | 2291 { |
| 2292 long_u n = 0; | |
| 2293 int cmp; | |
| 2294 | |
| 2295 cmp = c; | |
| 2296 if (cmp == '<' || cmp == '>') | |
| 2297 c = getchr(); | |
| 2298 while (VIM_ISDIGIT(c)) | |
| 2299 { | |
| 2300 n = n * 10 + (c - '0'); | |
| 2301 c = getchr(); | |
| 2302 } | |
| 639 | 2303 if (c == '\'' && n == 0) |
| 2304 { | |
| 2305 /* "\%'m", "\%<'m" and "\%>'m": Mark */ | |
| 2306 c = getchr(); | |
| 2307 ret = regnode(RE_MARK); | |
| 2308 if (ret == JUST_CALC_SIZE) | |
| 2309 regsize += 2; | |
| 2310 else | |
| 2311 { | |
| 2312 *regcode++ = c; | |
| 2313 *regcode++ = cmp; | |
| 2314 } | |
| 2315 break; | |
| 2316 } | |
| 2317 else if (c == 'l' || c == 'c' || c == 'v') | |
| 7 | 2318 { |
| 2319 if (c == 'l') | |
| 2320 ret = regnode(RE_LNUM); | |
| 2321 else if (c == 'c') | |
| 2322 ret = regnode(RE_COL); | |
| 2323 else | |
| 2324 ret = regnode(RE_VCOL); | |
| 2325 if (ret == JUST_CALC_SIZE) | |
| 2326 regsize += 5; | |
| 2327 else | |
| 2328 { | |
| 2329 /* put the number and the optional | |
| 2330 * comparator after the opcode */ | |
| 2331 regcode = re_put_long(regcode, n); | |
| 2332 *regcode++ = cmp; | |
| 2333 } | |
| 2334 break; | |
| 2335 } | |
| 2336 } | |
| 2337 | |
| 4444 | 2338 EMSG2_RET_NULL(_("E71: Invalid character after %s%%"), |
| 7 | 2339 reg_magic == MAGIC_ALL); |
| 2340 } | |
| 2341 } | |
| 2342 break; | |
| 2343 | |
| 2344 case Magic('['): | |
| 2345 collection: | |
| 2346 { | |
| 2347 char_u *lp; | |
| 2348 | |
| 2349 /* | |
| 2350 * If there is no matching ']', we assume the '[' is a normal | |
| 2351 * character. This makes 'incsearch' and ":help [" work. | |
| 2352 */ | |
| 2353 lp = skip_anyof(regparse); | |
| 2354 if (*lp == ']') /* there is a matching ']' */ | |
| 2355 { | |
| 2356 int startc = -1; /* > 0 when next '-' is a range */ | |
| 2357 int endc; | |
| 2358 | |
| 2359 /* | |
| 2360 * In a character class, different parsing rules apply. | |
| 2361 * Not even \ is special anymore, nothing is. | |
| 2362 */ | |
| 2363 if (*regparse == '^') /* Complement of range. */ | |
| 2364 { | |
| 2365 ret = regnode(ANYBUT + extra); | |
| 2366 regparse++; | |
| 2367 } | |
| 2368 else | |
| 2369 ret = regnode(ANYOF + extra); | |
| 2370 | |
| 2371 /* At the start ']' and '-' mean the literal character. */ | |
| 2372 if (*regparse == ']' || *regparse == '-') | |
| 167 | 2373 { |
| 2374 startc = *regparse; | |
| 7 | 2375 regc(*regparse++); |
| 167 | 2376 } |
| 7 | 2377 |
| 2378 while (*regparse != NUL && *regparse != ']') | |
| 2379 { | |
| 2380 if (*regparse == '-') | |
| 2381 { | |
| 2382 ++regparse; | |
| 2383 /* The '-' is not used for a range at the end and | |
| 2384 * after or before a '\n'. */ | |
| 2385 if (*regparse == ']' || *regparse == NUL | |
| 2386 || startc == -1 | |
| 2387 || (regparse[0] == '\\' && regparse[1] == 'n')) | |
| 2388 { | |
| 2389 regc('-'); | |
| 2390 startc = '-'; /* [--x] is a range */ | |
| 2391 } | |
| 2392 else | |
| 2393 { | |
| 167 | 2394 /* Also accept "a-[.z.]" */ |
| 2395 endc = 0; | |
| 2396 if (*regparse == '[') | |
| 2397 endc = get_coll_element(®parse); | |
| 2398 if (endc == 0) | |
| 2399 { | |
| 7 | 2400 #ifdef FEAT_MBYTE |
| 167 | 2401 if (has_mbyte) |
| 2402 endc = mb_ptr2char_adv(®parse); | |
| 2403 else | |
| 7 | 2404 #endif |
| 167 | 2405 endc = *regparse++; |
| 2406 } | |
| 24 | 2407 |
| 2408 /* Handle \o40, \x20 and \u20AC style sequences */ | |
| 167 | 2409 if (endc == '\\' && !cpo_lit && !cpo_bsl) |
| 24 | 2410 endc = coll_get_char(); |
| 2411 | |
| 7 | 2412 if (startc > endc) |
| 2413 EMSG_RET_NULL(_(e_invrange)); | |
| 2414 #ifdef FEAT_MBYTE | |
| 2415 if (has_mbyte && ((*mb_char2len)(startc) > 1 | |
| 2416 || (*mb_char2len)(endc) > 1)) | |
| 2417 { | |
| 2418 /* Limit to a range of 256 chars */ | |
| 2419 if (endc > startc + 256) | |
| 2420 EMSG_RET_NULL(_(e_invrange)); | |
| 2421 while (++startc <= endc) | |
| 2422 regmbc(startc); | |
| 2423 } | |
| 2424 else | |
| 2425 #endif | |
| 2426 { | |
| 2427 #ifdef EBCDIC | |
| 2428 int alpha_only = FALSE; | |
| 2429 | |
| 2430 /* for alphabetical range skip the gaps | |
| 2431 * 'i'-'j', 'r'-'s', 'I'-'J' and 'R'-'S'. */ | |
| 2432 if (isalpha(startc) && isalpha(endc)) | |
| 2433 alpha_only = TRUE; | |
| 2434 #endif | |
| 2435 while (++startc <= endc) | |
| 2436 #ifdef EBCDIC | |
| 2437 if (!alpha_only || isalpha(startc)) | |
| 2438 #endif | |
| 2439 regc(startc); | |
| 2440 } | |
| 2441 startc = -1; | |
| 2442 } | |
| 2443 } | |
| 2444 /* | |
| 2445 * Only "\]", "\^", "\]" and "\\" are special in Vi. Vim | |
| 2446 * accepts "\t", "\e", etc., but only when the 'l' flag in | |
| 2447 * 'cpoptions' is not included. | |
| 167 | 2448 * Posix doesn't recognize backslash at all. |
| 7 | 2449 */ |
| 2450 else if (*regparse == '\\' | |
| 167 | 2451 && !cpo_bsl |
| 7 | 2452 && (vim_strchr(REGEXP_INRANGE, regparse[1]) != NULL |
| 2453 || (!cpo_lit | |
| 2454 && vim_strchr(REGEXP_ABBR, | |
| 2455 regparse[1]) != NULL))) | |
| 2456 { | |
| 2457 regparse++; | |
| 2458 if (*regparse == 'n') | |
| 2459 { | |
| 2460 /* '\n' in range: also match NL */ | |
| 2461 if (ret != JUST_CALC_SIZE) | |
| 2462 { | |
| 4084 | 2463 /* Using \n inside [^] does not change what |
| 2464 * matches. "[^\n]" is the same as ".". */ | |
| 2465 if (*ret == ANYOF) | |
| 2466 { | |
| 7 | 2467 *ret = ANYOF + ADD_NL; |
| 4084 | 2468 *flagp |= HASNL; |
| 2469 } | |
| 7 | 2470 /* else: must have had a \n already */ |
| 2471 } | |
| 2472 regparse++; | |
| 2473 startc = -1; | |
| 2474 } | |
| 24 | 2475 else if (*regparse == 'd' |
| 2476 || *regparse == 'o' | |
| 2477 || *regparse == 'x' | |
| 2478 || *regparse == 'u' | |
| 2479 || *regparse == 'U') | |
| 2480 { | |
| 2481 startc = coll_get_char(); | |
| 2482 if (startc == 0) | |
| 2483 regc(0x0a); | |
| 2484 else | |
| 2485 #ifdef FEAT_MBYTE | |
| 2486 regmbc(startc); | |
| 2487 #else | |
| 2488 regc(startc); | |
| 2489 #endif | |
| 2490 } | |
| 7 | 2491 else |
| 2492 { | |
| 2493 startc = backslash_trans(*regparse++); | |
| 2494 regc(startc); | |
| 2495 } | |
| 2496 } | |
| 2497 else if (*regparse == '[') | |
| 2498 { | |
| 2499 int c_class; | |
| 2500 int cu; | |
| 2501 | |
| 167 | 2502 c_class = get_char_class(®parse); |
| 7 | 2503 startc = -1; |
| 2504 /* Characters assumed to be 8 bits! */ | |
| 2505 switch (c_class) | |
| 2506 { | |
| 2507 case CLASS_NONE: | |
| 167 | 2508 c_class = get_equi_class(®parse); |
| 2509 if (c_class != 0) | |
| 2510 { | |
| 2511 /* produce equivalence class */ | |
| 2512 reg_equi_class(c_class); | |
| 2513 } | |
| 2514 else if ((c_class = | |
| 2515 get_coll_element(®parse)) != 0) | |
| 2516 { | |
| 2517 /* produce a collating element */ | |
| 2518 regmbc(c_class); | |
| 2519 } | |
| 2520 else | |
| 2521 { | |
| 2522 /* literal '[', allow [[-x] as a range */ | |
| 2523 startc = *regparse++; | |
| 2524 regc(startc); | |
| 2525 } | |
| 7 | 2526 break; |
| 2527 case CLASS_ALNUM: | |
| 2528 for (cu = 1; cu <= 255; cu++) | |
| 2529 if (isalnum(cu)) | |
| 2530 regc(cu); | |
| 2531 break; | |
| 2532 case CLASS_ALPHA: | |
| 2533 for (cu = 1; cu <= 255; cu++) | |
| 2534 if (isalpha(cu)) | |
| 2535 regc(cu); | |
| 2536 break; | |
| 2537 case CLASS_BLANK: | |
| 2538 regc(' '); | |
| 2539 regc('\t'); | |
| 2540 break; | |
| 2541 case CLASS_CNTRL: | |
| 2542 for (cu = 1; cu <= 255; cu++) | |
| 2543 if (iscntrl(cu)) | |
| 2544 regc(cu); | |
| 2545 break; | |
| 2546 case CLASS_DIGIT: | |
| 2547 for (cu = 1; cu <= 255; cu++) | |
| 2548 if (VIM_ISDIGIT(cu)) | |
| 2549 regc(cu); | |
| 2550 break; | |
| 2551 case CLASS_GRAPH: | |
| 2552 for (cu = 1; cu <= 255; cu++) | |
| 2553 if (isgraph(cu)) | |
| 2554 regc(cu); | |
| 2555 break; | |
| 2556 case CLASS_LOWER: | |
| 2557 for (cu = 1; cu <= 255; cu++) | |
| 1347 | 2558 if (MB_ISLOWER(cu)) |
| 7 | 2559 regc(cu); |
| 2560 break; | |
| 2561 case CLASS_PRINT: | |
| 2562 for (cu = 1; cu <= 255; cu++) | |
| 2563 if (vim_isprintc(cu)) | |
| 2564 regc(cu); | |
| 2565 break; | |
| 2566 case CLASS_PUNCT: | |
| 2567 for (cu = 1; cu <= 255; cu++) | |
| 2568 if (ispunct(cu)) | |
| 2569 regc(cu); | |
| 2570 break; | |
| 2571 case CLASS_SPACE: | |
| 2572 for (cu = 9; cu <= 13; cu++) | |
| 2573 regc(cu); | |
| 2574 regc(' '); | |
| 2575 break; | |
| 2576 case CLASS_UPPER: | |
| 2577 for (cu = 1; cu <= 255; cu++) | |
| 1347 | 2578 if (MB_ISUPPER(cu)) |
| 7 | 2579 regc(cu); |
| 2580 break; | |
| 2581 case CLASS_XDIGIT: | |
| 2582 for (cu = 1; cu <= 255; cu++) | |
| 2583 if (vim_isxdigit(cu)) | |
| 2584 regc(cu); | |
| 2585 break; | |
| 2586 case CLASS_TAB: | |
| 2587 regc('\t'); | |
| 2588 break; | |
| 2589 case CLASS_RETURN: | |
| 2590 regc('\r'); | |
| 2591 break; | |
| 2592 case CLASS_BACKSPACE: | |
| 2593 regc('\b'); | |
| 2594 break; | |
| 2595 case CLASS_ESCAPE: | |
| 2596 regc('\033'); | |
| 2597 break; | |
| 2598 } | |
| 2599 } | |
| 2600 else | |
| 2601 { | |
| 2602 #ifdef FEAT_MBYTE | |
| 2603 if (has_mbyte) | |
| 2604 { | |
| 2605 int len; | |
| 2606 | |
| 2607 /* produce a multibyte character, including any | |
| 2608 * following composing characters */ | |
| 2609 startc = mb_ptr2char(regparse); | |
| 474 | 2610 len = (*mb_ptr2len)(regparse); |
| 7 | 2611 if (enc_utf8 && utf_char2len(startc) != len) |
| 2612 startc = -1; /* composing chars */ | |
| 2613 while (--len >= 0) | |
| 2614 regc(*regparse++); | |
| 2615 } | |
| 2616 else | |
| 2617 #endif | |
| 2618 { | |
| 2619 startc = *regparse++; | |
| 2620 regc(startc); | |
| 2621 } | |
| 2622 } | |
| 2623 } | |
| 2624 regc(NUL); | |
| 2625 prevchr_len = 1; /* last char was the ']' */ | |
| 2626 if (*regparse != ']') | |
| 2627 EMSG_RET_NULL(_(e_toomsbra)); /* Cannot happen? */ | |
| 2628 skipchr(); /* let's be friends with the lexer again */ | |
| 2629 *flagp |= HASWIDTH | SIMPLE; | |
| 2630 break; | |
| 2631 } | |
| 481 | 2632 else if (reg_strict) |
| 4444 | 2633 EMSG2_RET_NULL(_(e_missingbracket), reg_magic > MAGIC_OFF); |
| 7 | 2634 } |
| 2635 /* FALLTHROUGH */ | |
| 2636 | |
| 2637 default: | |
| 2638 { | |
| 2639 int len; | |
| 2640 | |
| 2641 #ifdef FEAT_MBYTE | |
| 2642 /* A multi-byte character is handled as a separate atom if it's | |
| 714 | 2643 * before a multi and when it's a composing char. */ |
| 2644 if (use_multibytecode(c)) | |
| 7 | 2645 { |
| 714 | 2646 do_multibyte: |
| 7 | 2647 ret = regnode(MULTIBYTECODE); |
| 2648 regmbc(c); | |
| 2649 *flagp |= HASWIDTH | SIMPLE; | |
| 2650 break; | |
| 2651 } | |
| 2652 #endif | |
| 2653 | |
| 2654 ret = regnode(EXACTLY); | |
| 2655 | |
| 2656 /* | |
| 2657 * Append characters as long as: | |
| 2658 * - there is no following multi, we then need the character in | |
| 2659 * front of it as a single character operand | |
| 2660 * - not running into a Magic character | |
| 2661 * - "one_exactly" is not set | |
| 2662 * But always emit at least one character. Might be a Multi, | |
| 2663 * e.g., a "[" without matching "]". | |
| 2664 */ | |
| 2665 for (len = 0; c != NUL && (len == 0 | |
| 2666 || (re_multi_type(peekchr()) == NOT_MULTI | |
| 2667 && !one_exactly | |
| 2668 && !is_Magic(c))); ++len) | |
| 2669 { | |
| 2670 c = no_Magic(c); | |
| 2671 #ifdef FEAT_MBYTE | |
| 2672 if (has_mbyte) | |
| 2673 { | |
| 2674 regmbc(c); | |
| 2675 if (enc_utf8) | |
| 2676 { | |
| 2677 int l; | |
| 2678 | |
| 714 | 2679 /* Need to get composing character too. */ |
| 7 | 2680 for (;;) |
| 2681 { | |
| 714 | 2682 l = utf_ptr2len(regparse); |
| 2683 if (!UTF_COMPOSINGLIKE(regparse, regparse + l)) | |
| 7 | 2684 break; |
| 714 | 2685 regmbc(utf_ptr2char(regparse)); |
| 2686 skipchr(); | |
| 7 | 2687 } |
| 2688 } | |
| 2689 } | |
| 2690 else | |
| 2691 #endif | |
| 2692 regc(c); | |
| 2693 c = getchr(); | |
| 2694 } | |
| 2695 ungetchr(); | |
| 2696 | |
| 2697 regc(NUL); | |
| 2698 *flagp |= HASWIDTH; | |
| 2699 if (len == 1) | |
| 2700 *flagp |= SIMPLE; | |
| 2701 } | |
| 2702 break; | |
| 2703 } | |
| 2704 | |
| 2705 return ret; | |
| 2706 } | |
| 2707 | |
| 714 | 2708 #ifdef FEAT_MBYTE |
| 2709 /* | |
| 2710 * Return TRUE if MULTIBYTECODE should be used instead of EXACTLY for | |
| 2711 * character "c". | |
| 2712 */ | |
| 2713 static int | |
| 2714 use_multibytecode(c) | |
| 2715 int c; | |
| 2716 { | |
| 2717 return has_mbyte && (*mb_char2len)(c) > 1 | |
| 2718 && (re_multi_type(peekchr()) != NOT_MULTI | |
| 2719 || (enc_utf8 && utf_iscomposing(c))); | |
| 2720 } | |
| 2721 #endif | |
| 2722 | |
| 7 | 2723 /* |
| 4444 | 2724 * Emit a node. |
| 7 | 2725 * Return pointer to generated code. |
| 2726 */ | |
| 2727 static char_u * | |
| 2728 regnode(op) | |
| 2729 int op; | |
| 2730 { | |
| 2731 char_u *ret; | |
| 2732 | |
| 2733 ret = regcode; | |
| 2734 if (ret == JUST_CALC_SIZE) | |
| 2735 regsize += 3; | |
| 2736 else | |
| 2737 { | |
| 2738 *regcode++ = op; | |
| 2739 *regcode++ = NUL; /* Null "next" pointer. */ | |
| 2740 *regcode++ = NUL; | |
| 2741 } | |
| 2742 return ret; | |
| 2743 } | |
| 2744 | |
| 2745 /* | |
| 2746 * Emit (if appropriate) a byte of code | |
| 2747 */ | |
| 2748 static void | |
| 2749 regc(b) | |
| 2750 int b; | |
| 2751 { | |
| 2752 if (regcode == JUST_CALC_SIZE) | |
| 2753 regsize++; | |
| 2754 else | |
| 2755 *regcode++ = b; | |
| 2756 } | |
| 2757 | |
| 2758 #ifdef FEAT_MBYTE | |
| 2759 /* | |
| 2760 * Emit (if appropriate) a multi-byte character of code | |
| 2761 */ | |
| 2762 static void | |
| 2763 regmbc(c) | |
| 2764 int c; | |
| 2765 { | |
| 2974 | 2766 if (!has_mbyte && c > 0xff) |
| 2767 return; | |
| 7 | 2768 if (regcode == JUST_CALC_SIZE) |
| 2769 regsize += (*mb_char2len)(c); | |
| 2770 else | |
| 2771 regcode += (*mb_char2bytes)(c, regcode); | |
| 2772 } | |
| 2773 #endif | |
| 2774 | |
| 2775 /* | |
| 4444 | 2776 * Insert an operator in front of already-emitted operand |
| 7 | 2777 * |
| 2778 * Means relocating the operand. | |
| 2779 */ | |
| 2780 static void | |
| 2781 reginsert(op, opnd) | |
| 2782 int op; | |
| 2783 char_u *opnd; | |
| 2784 { | |
| 2785 char_u *src; | |
| 2786 char_u *dst; | |
| 2787 char_u *place; | |
| 2788 | |
| 2789 if (regcode == JUST_CALC_SIZE) | |
| 2790 { | |
| 2791 regsize += 3; | |
| 2792 return; | |
| 2793 } | |
| 2794 src = regcode; | |
| 2795 regcode += 3; | |
| 2796 dst = regcode; | |
| 2797 while (src > opnd) | |
| 2798 *--dst = *--src; | |
| 2799 | |
| 2800 place = opnd; /* Op node, where operand used to be. */ | |
| 2801 *place++ = op; | |
| 2802 *place++ = NUL; | |
| 2803 *place = NUL; | |
| 2804 } | |
| 2805 | |
| 2806 /* | |
| 4444 | 2807 * Insert an operator in front of already-emitted operand. |
|
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
2808 * Add a number to the operator. |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
2809 */ |
|
7a2be4a39423
updated for version 7.3.1037
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|
2810 static void |
|
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|
2811 reginsert_nr(op, val, opnd) |
|
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|
2812 int op; |
|
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|
2813 long val; |
|
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|
2814 char_u *opnd; |
|
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2815 { |
|
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|
2816 char_u *src; |
|
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2817 char_u *dst; |
|
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2818 char_u *place; |
|
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2819 |
|
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2820 if (regcode == JUST_CALC_SIZE) |
|
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2821 { |
|
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2822 regsize += 7; |
|
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|
2823 return; |
|
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|
2824 } |
|
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|
2825 src = regcode; |
|
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|
2826 regcode += 7; |
|
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|
2827 dst = regcode; |
|
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|
2828 while (src > opnd) |
|
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2829 *--dst = *--src; |
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|
2830 |
|
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2831 place = opnd; /* Op node, where operand used to be. */ |
|
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2832 *place++ = op; |
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2833 *place++ = NUL; |
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|
2834 *place++ = NUL; |
|
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|
2835 place = re_put_long(place, (long_u)val); |
|
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2836 } |
|
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|
2837 |
|
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|
2838 /* |
|
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2839 * Insert an operator in front of already-emitted operand. |
| 7 | 2840 * The operator has the given limit values as operands. Also set next pointer. |
| 2841 * | |
| 2842 * Means relocating the operand. | |
| 2843 */ | |
| 2844 static void | |
| 2845 reginsert_limits(op, minval, maxval, opnd) | |
| 2846 int op; | |
| 2847 long minval; | |
| 2848 long maxval; | |
| 2849 char_u *opnd; | |
| 2850 { | |
| 2851 char_u *src; | |
| 2852 char_u *dst; | |
| 2853 char_u *place; | |
| 2854 | |
| 2855 if (regcode == JUST_CALC_SIZE) | |
| 2856 { | |
| 2857 regsize += 11; | |
| 2858 return; | |
| 2859 } | |
| 2860 src = regcode; | |
| 2861 regcode += 11; | |
| 2862 dst = regcode; | |
| 2863 while (src > opnd) | |
| 2864 *--dst = *--src; | |
| 2865 | |
| 2866 place = opnd; /* Op node, where operand used to be. */ | |
| 2867 *place++ = op; | |
| 2868 *place++ = NUL; | |
| 2869 *place++ = NUL; | |
| 2870 place = re_put_long(place, (long_u)minval); | |
| 2871 place = re_put_long(place, (long_u)maxval); | |
| 2872 regtail(opnd, place); | |
| 2873 } | |
| 2874 | |
| 2875 /* | |
| 2876 * Write a long as four bytes at "p" and return pointer to the next char. | |
| 2877 */ | |
| 2878 static char_u * | |
| 2879 re_put_long(p, val) | |
| 2880 char_u *p; | |
| 2881 long_u val; | |
| 2882 { | |
| 2883 *p++ = (char_u) ((val >> 24) & 0377); | |
| 2884 *p++ = (char_u) ((val >> 16) & 0377); | |
| 2885 *p++ = (char_u) ((val >> 8) & 0377); | |
| 2886 *p++ = (char_u) (val & 0377); | |
| 2887 return p; | |
| 2888 } | |
| 2889 | |
| 2890 /* | |
| 4444 | 2891 * Set the next-pointer at the end of a node chain. |
| 7 | 2892 */ |
| 2893 static void | |
| 2894 regtail(p, val) | |
| 2895 char_u *p; | |
| 2896 char_u *val; | |
| 2897 { | |
| 2898 char_u *scan; | |
| 2899 char_u *temp; | |
| 2900 int offset; | |
| 2901 | |
| 2902 if (p == JUST_CALC_SIZE) | |
| 2903 return; | |
| 2904 | |
| 2905 /* Find last node. */ | |
| 2906 scan = p; | |
| 2907 for (;;) | |
| 2908 { | |
| 2909 temp = regnext(scan); | |
| 2910 if (temp == NULL) | |
| 2911 break; | |
| 2912 scan = temp; | |
| 2913 } | |
| 2914 | |
| 233 | 2915 if (OP(scan) == BACK) |
| 7 | 2916 offset = (int)(scan - val); |
| 2917 else | |
| 2918 offset = (int)(val - scan); | |
| 2010 | 2919 /* When the offset uses more than 16 bits it can no longer fit in the two |
| 2974 | 2920 * bytes available. Use a global flag to avoid having to check return |
| 2010 | 2921 * values in too many places. */ |
| 2922 if (offset > 0xffff) | |
| 2923 reg_toolong = TRUE; | |
| 2924 else | |
| 2925 { | |
| 2926 *(scan + 1) = (char_u) (((unsigned)offset >> 8) & 0377); | |
| 2927 *(scan + 2) = (char_u) (offset & 0377); | |
| 2928 } | |
| 7 | 2929 } |
| 2930 | |
| 2931 /* | |
| 4444 | 2932 * Like regtail, on item after a BRANCH; nop if none. |
| 7 | 2933 */ |
| 2934 static void | |
| 2935 regoptail(p, val) | |
| 2936 char_u *p; | |
| 2937 char_u *val; | |
| 2938 { | |
| 2939 /* When op is neither BRANCH nor BRACE_COMPLEX0-9, it is "operandless" */ | |
| 2940 if (p == NULL || p == JUST_CALC_SIZE | |
| 2941 || (OP(p) != BRANCH | |
| 2942 && (OP(p) < BRACE_COMPLEX || OP(p) > BRACE_COMPLEX + 9))) | |
| 2943 return; | |
| 2944 regtail(OPERAND(p), val); | |
| 2945 } | |
| 2946 | |
| 2947 /* | |
| 4444 | 2948 * Functions for getting characters from the regexp input. |
| 7 | 2949 */ |
| 2950 | |
| 2951 static int at_start; /* True when on the first character */ | |
| 2952 static int prev_at_start; /* True when on the second character */ | |
| 2953 | |
| 4444 | 2954 /* |
| 2955 * Start parsing at "str". | |
| 2956 */ | |
| 7 | 2957 static void |
| 2958 initchr(str) | |
| 2959 char_u *str; | |
| 2960 { | |
| 2961 regparse = str; | |
| 2962 prevchr_len = 0; | |
| 2963 curchr = prevprevchr = prevchr = nextchr = -1; | |
| 2964 at_start = TRUE; | |
| 2965 prev_at_start = FALSE; | |
| 2966 } | |
| 2967 | |
| 4444 | 2968 /* |
|
4679
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2969 * Save the current parse state, so that it can be restored and parsing |
|
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2970 * starts in the same state again. |
|
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|
2971 */ |
|
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|
2972 static void |
|
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|
2973 save_parse_state(ps) |
|
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|
2974 parse_state_T *ps; |
|
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|
2975 { |
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|
2976 ps->regparse = regparse; |
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|
2977 ps->prevchr_len = prevchr_len; |
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|
2978 ps->curchr = curchr; |
|
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|
2979 ps->prevchr = prevchr; |
|
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|
2980 ps->prevprevchr = prevprevchr; |
|
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|
2981 ps->nextchr = nextchr; |
|
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|
2982 ps->at_start = at_start; |
|
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|
2983 ps->prev_at_start = prev_at_start; |
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|
2984 ps->regnpar = regnpar; |
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|
2985 } |
|
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|
2986 |
|
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|
2987 /* |
|
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|
2988 * Restore a previously saved parse state. |
|
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|
2989 */ |
|
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|
2990 static void |
|
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|
2991 restore_parse_state(ps) |
|
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|
2992 parse_state_T *ps; |
|
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|
2993 { |
|
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|
2994 regparse = ps->regparse; |
|
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|
2995 prevchr_len = ps->prevchr_len; |
|
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|
2996 curchr = ps->curchr; |
|
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|
2997 prevchr = ps->prevchr; |
|
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|
2998 prevprevchr = ps->prevprevchr; |
|
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|
2999 nextchr = ps->nextchr; |
|
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|
3000 at_start = ps->at_start; |
|
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|
3001 prev_at_start = ps->prev_at_start; |
|
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|
3002 regnpar = ps->regnpar; |
|
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|
3003 } |
|
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3004 |
|
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3005 |
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|
3006 /* |
| 4444 | 3007 * Get the next character without advancing. |
| 3008 */ | |
| 7 | 3009 static int |
| 3010 peekchr() | |
| 3011 { | |
| 167 | 3012 static int after_slash = FALSE; |
| 3013 | |
| 7 | 3014 if (curchr == -1) |
| 3015 { | |
| 3016 switch (curchr = regparse[0]) | |
| 3017 { | |
| 3018 case '.': | |
| 3019 case '[': | |
| 3020 case '~': | |
| 3021 /* magic when 'magic' is on */ | |
| 3022 if (reg_magic >= MAGIC_ON) | |
| 3023 curchr = Magic(curchr); | |
| 3024 break; | |
| 3025 case '(': | |
| 3026 case ')': | |
| 3027 case '{': | |
| 3028 case '%': | |
| 3029 case '+': | |
| 3030 case '=': | |
| 3031 case '?': | |
| 3032 case '@': | |
| 3033 case '!': | |
| 3034 case '&': | |
| 3035 case '|': | |
| 3036 case '<': | |
| 3037 case '>': | |
| 3038 case '#': /* future ext. */ | |
| 3039 case '"': /* future ext. */ | |
| 3040 case '\'': /* future ext. */ | |
| 3041 case ',': /* future ext. */ | |
| 3042 case '-': /* future ext. */ | |
| 3043 case ':': /* future ext. */ | |
| 3044 case ';': /* future ext. */ | |
| 3045 case '`': /* future ext. */ | |
| 3046 case '/': /* Can't be used in / command */ | |
| 3047 /* magic only after "\v" */ | |
| 3048 if (reg_magic == MAGIC_ALL) | |
| 3049 curchr = Magic(curchr); | |
| 3050 break; | |
| 3051 case '*': | |
| 167 | 3052 /* * is not magic as the very first character, eg "?*ptr", when |
| 3053 * after '^', eg "/^*ptr" and when after "\(", "\|", "\&". But | |
| 3054 * "\(\*" is not magic, thus must be magic if "after_slash" */ | |
| 3055 if (reg_magic >= MAGIC_ON | |
| 3056 && !at_start | |
| 3057 && !(prev_at_start && prevchr == Magic('^')) | |
| 3058 && (after_slash | |
| 3059 || (prevchr != Magic('(') | |
| 3060 && prevchr != Magic('&') | |
| 3061 && prevchr != Magic('|')))) | |
| 7 | 3062 curchr = Magic('*'); |
| 3063 break; | |
| 3064 case '^': | |
| 3065 /* '^' is only magic as the very first character and if it's after | |
| 3066 * "\(", "\|", "\&' or "\n" */ | |
| 3067 if (reg_magic >= MAGIC_OFF | |
| 3068 && (at_start | |
| 3069 || reg_magic == MAGIC_ALL | |
| 3070 || prevchr == Magic('(') | |
| 3071 || prevchr == Magic('|') | |
| 3072 || prevchr == Magic('&') | |
| 3073 || prevchr == Magic('n') | |
| 3074 || (no_Magic(prevchr) == '(' | |
| 3075 && prevprevchr == Magic('%')))) | |
| 3076 { | |
| 3077 curchr = Magic('^'); | |
| 3078 at_start = TRUE; | |
| 3079 prev_at_start = FALSE; | |
| 3080 } | |
| 3081 break; | |
| 3082 case '$': | |
| 3083 /* '$' is only magic as the very last char and if it's in front of | |
| 3084 * either "\|", "\)", "\&", or "\n" */ | |
| 3085 if (reg_magic >= MAGIC_OFF) | |
| 3086 { | |
| 3087 char_u *p = regparse + 1; | |
| 3088 | |
| 3089 /* ignore \c \C \m and \M after '$' */ | |
| 3090 while (p[0] == '\\' && (p[1] == 'c' || p[1] == 'C' | |
| 3091 || p[1] == 'm' || p[1] == 'M' || p[1] == 'Z')) | |
| 3092 p += 2; | |
| 3093 if (p[0] == NUL | |
| 3094 || (p[0] == '\\' | |
| 3095 && (p[1] == '|' || p[1] == '&' || p[1] == ')' | |
| 3096 || p[1] == 'n')) | |
| 3097 || reg_magic == MAGIC_ALL) | |
| 3098 curchr = Magic('$'); | |
| 3099 } | |
| 3100 break; | |
| 3101 case '\\': | |
| 3102 { | |
| 3103 int c = regparse[1]; | |
| 3104 | |
| 3105 if (c == NUL) | |
| 3106 curchr = '\\'; /* trailing '\' */ | |
| 3107 else if ( | |
| 3108 #ifdef EBCDIC | |
| 3109 vim_strchr(META, c) | |
| 3110 #else | |
| 3111 c <= '~' && META_flags[c] | |
| 3112 #endif | |
| 3113 ) | |
| 3114 { | |
| 3115 /* | |
| 3116 * META contains everything that may be magic sometimes, | |
| 3117 * except ^ and $ ("\^" and "\$" are only magic after | |
| 3118 * "\v"). We now fetch the next character and toggle its | |
| 3119 * magicness. Therefore, \ is so meta-magic that it is | |
| 3120 * not in META. | |
| 3121 */ | |
| 3122 curchr = -1; | |
| 3123 prev_at_start = at_start; | |
| 3124 at_start = FALSE; /* be able to say "/\*ptr" */ | |
| 3125 ++regparse; | |
| 167 | 3126 ++after_slash; |
| 7 | 3127 peekchr(); |
| 3128 --regparse; | |
| 167 | 3129 --after_slash; |
| 7 | 3130 curchr = toggle_Magic(curchr); |
| 3131 } | |
| 3132 else if (vim_strchr(REGEXP_ABBR, c)) | |
| 3133 { | |
| 3134 /* | |
| 3135 * Handle abbreviations, like "\t" for TAB -- webb | |
| 3136 */ | |
| 3137 curchr = backslash_trans(c); | |
| 3138 } | |
| 3139 else if (reg_magic == MAGIC_NONE && (c == '$' || c == '^')) | |
| 3140 curchr = toggle_Magic(c); | |
| 3141 else | |
| 3142 { | |
| 3143 /* | |
| 3144 * Next character can never be (made) magic? | |
| 3145 * Then backslashing it won't do anything. | |
| 3146 */ | |
| 3147 #ifdef FEAT_MBYTE | |
| 3148 if (has_mbyte) | |
| 3149 curchr = (*mb_ptr2char)(regparse + 1); | |
| 3150 else | |
| 3151 #endif | |
| 3152 curchr = c; | |
| 3153 } | |
| 3154 break; | |
| 3155 } | |
| 3156 | |
| 3157 #ifdef FEAT_MBYTE | |
| 3158 default: | |
| 3159 if (has_mbyte) | |
| 3160 curchr = (*mb_ptr2char)(regparse); | |
| 3161 #endif | |
| 3162 } | |
| 3163 } | |
| 3164 | |
| 3165 return curchr; | |
| 3166 } | |
| 3167 | |
| 3168 /* | |
| 3169 * Eat one lexed character. Do this in a way that we can undo it. | |
| 3170 */ | |
| 3171 static void | |
| 3172 skipchr() | |
| 3173 { | |
| 3174 /* peekchr() eats a backslash, do the same here */ | |
| 3175 if (*regparse == '\\') | |
| 3176 prevchr_len = 1; | |
| 3177 else | |
| 3178 prevchr_len = 0; | |
| 3179 if (regparse[prevchr_len] != NUL) | |
| 3180 { | |
| 3181 #ifdef FEAT_MBYTE | |
| 714 | 3182 if (enc_utf8) |
| 1449 | 3183 /* exclude composing chars that mb_ptr2len does include */ |
| 3184 prevchr_len += utf_ptr2len(regparse + prevchr_len); | |
| 714 | 3185 else if (has_mbyte) |
| 474 | 3186 prevchr_len += (*mb_ptr2len)(regparse + prevchr_len); |
| 7 | 3187 else |
| 3188 #endif | |
| 3189 ++prevchr_len; | |
| 3190 } | |
| 3191 regparse += prevchr_len; | |
| 3192 prev_at_start = at_start; | |
| 3193 at_start = FALSE; | |
| 3194 prevprevchr = prevchr; | |
| 3195 prevchr = curchr; | |
| 3196 curchr = nextchr; /* use previously unget char, or -1 */ | |
| 3197 nextchr = -1; | |
| 3198 } | |
| 3199 | |
| 3200 /* | |
| 3201 * Skip a character while keeping the value of prev_at_start for at_start. | |
| 3202 * prevchr and prevprevchr are also kept. | |
| 3203 */ | |
| 3204 static void | |
| 3205 skipchr_keepstart() | |
| 3206 { | |
| 3207 int as = prev_at_start; | |
| 3208 int pr = prevchr; | |
| 3209 int prpr = prevprevchr; | |
| 3210 | |
| 3211 skipchr(); | |
| 3212 at_start = as; | |
| 3213 prevchr = pr; | |
| 3214 prevprevchr = prpr; | |
| 3215 } | |
| 3216 | |
| 4444 | 3217 /* |
| 3218 * Get the next character from the pattern. We know about magic and such, so | |
| 3219 * therefore we need a lexical analyzer. | |
| 3220 */ | |
| 7 | 3221 static int |
| 3222 getchr() | |
| 3223 { | |
| 3224 int chr = peekchr(); | |
| 3225 | |
| 3226 skipchr(); | |
| 3227 return chr; | |
| 3228 } | |
| 3229 | |
| 3230 /* | |
| 3231 * put character back. Works only once! | |
| 3232 */ | |
| 3233 static void | |
| 3234 ungetchr() | |
| 3235 { | |
| 3236 nextchr = curchr; | |
| 3237 curchr = prevchr; | |
| 3238 prevchr = prevprevchr; | |
| 3239 at_start = prev_at_start; | |
| 3240 prev_at_start = FALSE; | |
| 3241 | |
| 3242 /* Backup regparse, so that it's at the same position as before the | |
| 3243 * getchr(). */ | |
| 3244 regparse -= prevchr_len; | |
| 3245 } | |
| 3246 | |
| 3247 /* | |
| 29 | 3248 * Get and return the value of the hex string at the current position. |
| 3249 * Return -1 if there is no valid hex number. | |
| 3250 * The position is updated: | |
| 24 | 3251 * blahblah\%x20asdf |
| 856 | 3252 * before-^ ^-after |
| 24 | 3253 * The parameter controls the maximum number of input characters. This will be |
| 3254 * 2 when reading a \%x20 sequence and 4 when reading a \%u20AC sequence. | |
| 3255 */ | |
| 3256 static int | |
| 3257 gethexchrs(maxinputlen) | |
| 3258 int maxinputlen; | |
| 3259 { | |
| 3260 int nr = 0; | |
| 3261 int c; | |
| 3262 int i; | |
| 3263 | |
| 3264 for (i = 0; i < maxinputlen; ++i) | |
| 3265 { | |
| 3266 c = regparse[0]; | |
| 3267 if (!vim_isxdigit(c)) | |
| 3268 break; | |
| 3269 nr <<= 4; | |
| 3270 nr |= hex2nr(c); | |
| 3271 ++regparse; | |
| 3272 } | |
| 3273 | |
| 3274 if (i == 0) | |
| 3275 return -1; | |
| 3276 return nr; | |
| 3277 } | |
| 3278 | |
| 3279 /* | |
|
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
3280 * Get and return the value of the decimal string immediately after the |
| 24 | 3281 * current position. Return -1 for invalid. Consumes all digits. |
| 3282 */ | |
| 3283 static int | |
| 3284 getdecchrs() | |
| 3285 { | |
| 3286 int nr = 0; | |
| 3287 int c; | |
| 3288 int i; | |
| 3289 | |
| 3290 for (i = 0; ; ++i) | |
| 3291 { | |
| 3292 c = regparse[0]; | |
| 3293 if (c < '0' || c > '9') | |
| 3294 break; | |
| 3295 nr *= 10; | |
| 3296 nr += c - '0'; | |
| 3297 ++regparse; | |
|
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
3298 curchr = -1; /* no longer valid */ |
| 24 | 3299 } |
| 3300 | |
| 3301 if (i == 0) | |
| 3302 return -1; | |
| 3303 return nr; | |
| 3304 } | |
| 3305 | |
| 3306 /* | |
| 3307 * get and return the value of the octal string immediately after the current | |
| 3308 * position. Return -1 for invalid, or 0-255 for valid. Smart enough to handle | |
| 3309 * numbers > 377 correctly (for example, 400 is treated as 40) and doesn't | |
| 3310 * treat 8 or 9 as recognised characters. Position is updated: | |
| 3311 * blahblah\%o210asdf | |
| 856 | 3312 * before-^ ^-after |
| 24 | 3313 */ |
| 3314 static int | |
| 3315 getoctchrs() | |
| 3316 { | |
| 3317 int nr = 0; | |
| 3318 int c; | |
| 3319 int i; | |
| 3320 | |
| 3321 for (i = 0; i < 3 && nr < 040; ++i) | |
| 3322 { | |
| 3323 c = regparse[0]; | |
| 3324 if (c < '0' || c > '7') | |
| 3325 break; | |
| 3326 nr <<= 3; | |
| 3327 nr |= hex2nr(c); | |
| 3328 ++regparse; | |
| 3329 } | |
| 3330 | |
| 3331 if (i == 0) | |
| 3332 return -1; | |
| 3333 return nr; | |
| 3334 } | |
| 3335 | |
| 3336 /* | |
| 3337 * Get a number after a backslash that is inside []. | |
| 3338 * When nothing is recognized return a backslash. | |
| 3339 */ | |
| 3340 static int | |
| 3341 coll_get_char() | |
| 3342 { | |
| 3343 int nr = -1; | |
| 3344 | |
| 3345 switch (*regparse++) | |
| 3346 { | |
| 3347 case 'd': nr = getdecchrs(); break; | |
| 3348 case 'o': nr = getoctchrs(); break; | |
| 3349 case 'x': nr = gethexchrs(2); break; | |
| 3350 case 'u': nr = gethexchrs(4); break; | |
| 3351 case 'U': nr = gethexchrs(8); break; | |
| 3352 } | |
| 3353 if (nr < 0) | |
| 3354 { | |
| 3355 /* If getting the number fails be backwards compatible: the character | |
| 3356 * is a backslash. */ | |
| 3357 --regparse; | |
| 3358 nr = '\\'; | |
| 3359 } | |
| 3360 return nr; | |
| 3361 } | |
| 3362 | |
| 3363 /* | |
| 7 | 3364 * read_limits - Read two integers to be taken as a minimum and maximum. |
| 3365 * If the first character is '-', then the range is reversed. | |
| 3366 * Should end with 'end'. If minval is missing, zero is default, if maxval is | |
| 3367 * missing, a very big number is the default. | |
| 3368 */ | |
| 3369 static int | |
| 3370 read_limits(minval, maxval) | |
| 3371 long *minval; | |
| 3372 long *maxval; | |
| 3373 { | |
| 3374 int reverse = FALSE; | |
| 3375 char_u *first_char; | |
| 3376 long tmp; | |
| 3377 | |
| 3378 if (*regparse == '-') | |
| 3379 { | |
| 3380 /* Starts with '-', so reverse the range later */ | |
| 3381 regparse++; | |
| 3382 reverse = TRUE; | |
| 3383 } | |
| 3384 first_char = regparse; | |
| 3385 *minval = getdigits(®parse); | |
| 3386 if (*regparse == ',') /* There is a comma */ | |
| 3387 { | |
| 3388 if (vim_isdigit(*++regparse)) | |
| 3389 *maxval = getdigits(®parse); | |
| 3390 else | |
| 3391 *maxval = MAX_LIMIT; | |
| 3392 } | |
| 3393 else if (VIM_ISDIGIT(*first_char)) | |
| 3394 *maxval = *minval; /* It was \{n} or \{-n} */ | |
| 3395 else | |
| 3396 *maxval = MAX_LIMIT; /* It was \{} or \{-} */ | |
| 3397 if (*regparse == '\\') | |
| 3398 regparse++; /* Allow either \{...} or \{...\} */ | |
| 167 | 3399 if (*regparse != '}') |
| 7 | 3400 { |
| 3401 sprintf((char *)IObuff, _("E554: Syntax error in %s{...}"), | |
| 3402 reg_magic == MAGIC_ALL ? "" : "\\"); | |
| 3403 EMSG_RET_FAIL(IObuff); | |
| 3404 } | |
| 3405 | |
| 3406 /* | |
| 3407 * Reverse the range if there was a '-', or make sure it is in the right | |
| 3408 * order otherwise. | |
| 3409 */ | |
| 3410 if ((!reverse && *minval > *maxval) || (reverse && *minval < *maxval)) | |
| 3411 { | |
| 3412 tmp = *minval; | |
| 3413 *minval = *maxval; | |
| 3414 *maxval = tmp; | |
| 3415 } | |
| 3416 skipchr(); /* let's be friends with the lexer again */ | |
| 3417 return OK; | |
| 3418 } | |
| 3419 | |
| 3420 /* | |
| 3421 * vim_regexec and friends | |
| 3422 */ | |
| 3423 | |
| 3424 /* | |
| 3425 * Global work variables for vim_regexec(). | |
| 3426 */ | |
| 3427 | |
| 3428 /* The current match-position is remembered with these variables: */ | |
| 3429 static linenr_T reglnum; /* line number, relative to first line */ | |
| 3430 static char_u *regline; /* start of current line */ | |
| 3431 static char_u *reginput; /* current input, points into "regline" */ | |
| 3432 | |
| 3433 static int need_clear_subexpr; /* subexpressions still need to be | |
| 3434 * cleared */ | |
| 3435 #ifdef FEAT_SYN_HL | |
| 3436 static int need_clear_zsubexpr = FALSE; /* extmatch subexpressions | |
| 3437 * still need to be cleared */ | |
| 3438 #endif | |
| 3439 | |
| 3440 /* | |
| 3441 * Structure used to save the current input state, when it needs to be | |
| 3442 * restored after trying a match. Used by reg_save() and reg_restore(). | |
| 233 | 3443 * Also stores the length of "backpos". |
| 7 | 3444 */ |
| 3445 typedef struct | |
| 3446 { | |
| 3447 union | |
| 3448 { | |
| 3449 char_u *ptr; /* reginput pointer, for single-line regexp */ | |
| 3450 lpos_T pos; /* reginput pos, for multi-line regexp */ | |
| 3451 } rs_u; | |
| 233 | 3452 int rs_len; |
| 7 | 3453 } regsave_T; |
| 3454 | |
| 3455 /* struct to save start/end pointer/position in for \(\) */ | |
| 3456 typedef struct | |
| 3457 { | |
| 3458 union | |
| 3459 { | |
| 3460 char_u *ptr; | |
| 3461 lpos_T pos; | |
| 3462 } se_u; | |
| 3463 } save_se_T; | |
| 3464 | |
| 1579 | 3465 /* used for BEHIND and NOBEHIND matching */ |
| 3466 typedef struct regbehind_S | |
| 3467 { | |
| 3468 regsave_T save_after; | |
| 3469 regsave_T save_behind; | |
| 1602 | 3470 int save_need_clear_subexpr; |
| 1579 | 3471 save_se_T save_start[NSUBEXP]; |
| 3472 save_se_T save_end[NSUBEXP]; | |
| 3473 } regbehind_T; | |
| 3474 | |
| 7 | 3475 static char_u *reg_getline __ARGS((linenr_T lnum)); |
| 4444 | 3476 static long bt_regexec_both __ARGS((char_u *line, colnr_T col, proftime_T *tm)); |
| 3477 static long regtry __ARGS((bt_regprog_T *prog, colnr_T col)); | |
| 7 | 3478 static void cleanup_subexpr __ARGS((void)); |
| 3479 #ifdef FEAT_SYN_HL | |
| 3480 static void cleanup_zsubexpr __ARGS((void)); | |
| 3481 #endif | |
| 1579 | 3482 static void save_subexpr __ARGS((regbehind_T *bp)); |
| 3483 static void restore_subexpr __ARGS((regbehind_T *bp)); | |
| 7 | 3484 static void reg_nextline __ARGS((void)); |
| 233 | 3485 static void reg_save __ARGS((regsave_T *save, garray_T *gap)); |
| 3486 static void reg_restore __ARGS((regsave_T *save, garray_T *gap)); | |
| 7 | 3487 static int reg_save_equal __ARGS((regsave_T *save)); |
| 3488 static void save_se_multi __ARGS((save_se_T *savep, lpos_T *posp)); | |
| 3489 static void save_se_one __ARGS((save_se_T *savep, char_u **pp)); | |
| 3490 | |
| 3491 /* Save the sub-expressions before attempting a match. */ | |
| 3492 #define save_se(savep, posp, pp) \ | |
| 3493 REG_MULTI ? save_se_multi((savep), (posp)) : save_se_one((savep), (pp)) | |
| 3494 | |
| 3495 /* After a failed match restore the sub-expressions. */ | |
| 3496 #define restore_se(savep, posp, pp) { \ | |
| 3497 if (REG_MULTI) \ | |
| 3498 *(posp) = (savep)->se_u.pos; \ | |
| 3499 else \ | |
| 3500 *(pp) = (savep)->se_u.ptr; } | |
| 3501 | |
| 3502 static int re_num_cmp __ARGS((long_u val, char_u *scan)); | |
| 180 | 3503 static int regmatch __ARGS((char_u *prog)); |
| 7 | 3504 static int regrepeat __ARGS((char_u *p, long maxcount)); |
| 3505 | |
| 3506 #ifdef DEBUG | |
| 3507 int regnarrate = 0; | |
| 3508 #endif | |
| 3509 | |
| 3510 /* | |
| 3511 * Internal copy of 'ignorecase'. It is set at each call to vim_regexec(). | |
| 3512 * Normally it gets the value of "rm_ic" or "rmm_ic", but when the pattern | |
| 3513 * contains '\c' or '\C' the value is overruled. | |
| 3514 */ | |
| 3515 static int ireg_ic; | |
| 3516 | |
| 3517 #ifdef FEAT_MBYTE | |
| 3518 /* | |
| 3519 * Similar to ireg_ic, but only for 'combining' characters. Set with \Z flag | |
| 3520 * in the regexp. Defaults to false, always. | |
| 3521 */ | |
| 3522 static int ireg_icombine; | |
| 3523 #endif | |
| 3524 | |
| 3525 /* | |
| 410 | 3526 * Copy of "rmm_maxcol": maximum column to search for a match. Zero when |
| 3527 * there is no maximum. | |
| 3528 */ | |
| 418 | 3529 static colnr_T ireg_maxcol; |
| 410 | 3530 |
| 3531 /* | |
| 7 | 3532 * Sometimes need to save a copy of a line. Since alloc()/free() is very |
| 3533 * slow, we keep one allocated piece of memory and only re-allocate it when | |
| 4444 | 3534 * it's too small. It's freed in bt_regexec_both() when finished. |
| 7 | 3535 */ |
| 1468 | 3536 static char_u *reg_tofree = NULL; |
| 7 | 3537 static unsigned reg_tofreelen; |
| 3538 | |
| 3539 /* | |
| 3540 * These variables are set when executing a regexp to speed up the execution. | |
| 1209 | 3541 * Which ones are set depends on whether a single-line or multi-line match is |
| 7 | 3542 * done: |
| 3543 * single-line multi-line | |
| 3544 * reg_match ®match_T NULL | |
| 3545 * reg_mmatch NULL ®mmatch_T | |
| 3546 * reg_startp reg_match->startp <invalid> | |
| 3547 * reg_endp reg_match->endp <invalid> | |
| 3548 * reg_startpos <invalid> reg_mmatch->startpos | |
| 3549 * reg_endpos <invalid> reg_mmatch->endpos | |
| 3550 * reg_win NULL window in which to search | |
| 4061 | 3551 * reg_buf curbuf buffer in which to search |
| 7 | 3552 * reg_firstlnum <invalid> first line in which to search |
| 3553 * reg_maxline 0 last line nr | |
| 3554 * reg_line_lbr FALSE or TRUE FALSE | |
| 3555 */ | |
| 3556 static regmatch_T *reg_match; | |
| 3557 static regmmatch_T *reg_mmatch; | |
| 3558 static char_u **reg_startp = NULL; | |
| 3559 static char_u **reg_endp = NULL; | |
| 3560 static lpos_T *reg_startpos = NULL; | |
| 3561 static lpos_T *reg_endpos = NULL; | |
| 3562 static win_T *reg_win; | |
| 3563 static buf_T *reg_buf; | |
| 3564 static linenr_T reg_firstlnum; | |
| 3565 static linenr_T reg_maxline; | |
| 3566 static int reg_line_lbr; /* "\n" in string is line break */ | |
| 3567 | |
| 270 | 3568 /* Values for rs_state in regitem_T. */ |
| 3569 typedef enum regstate_E | |
| 3570 { | |
| 3571 RS_NOPEN = 0 /* NOPEN and NCLOSE */ | |
| 3572 , RS_MOPEN /* MOPEN + [0-9] */ | |
| 3573 , RS_MCLOSE /* MCLOSE + [0-9] */ | |
| 3574 #ifdef FEAT_SYN_HL | |
| 3575 , RS_ZOPEN /* ZOPEN + [0-9] */ | |
| 3576 , RS_ZCLOSE /* ZCLOSE + [0-9] */ | |
| 3577 #endif | |
| 3578 , RS_BRANCH /* BRANCH */ | |
| 3579 , RS_BRCPLX_MORE /* BRACE_COMPLEX and trying one more match */ | |
| 3580 , RS_BRCPLX_LONG /* BRACE_COMPLEX and trying longest match */ | |
| 3581 , RS_BRCPLX_SHORT /* BRACE_COMPLEX and trying shortest match */ | |
| 3582 , RS_NOMATCH /* NOMATCH */ | |
| 3583 , RS_BEHIND1 /* BEHIND / NOBEHIND matching rest */ | |
| 3584 , RS_BEHIND2 /* BEHIND / NOBEHIND matching behind part */ | |
| 3585 , RS_STAR_LONG /* STAR/PLUS/BRACE_SIMPLE longest match */ | |
| 3586 , RS_STAR_SHORT /* STAR/PLUS/BRACE_SIMPLE shortest match */ | |
| 3587 } regstate_T; | |
| 3588 | |
| 3589 /* | |
| 3590 * When there are alternatives a regstate_T is put on the regstack to remember | |
| 3591 * what we are doing. | |
| 3592 * Before it may be another type of item, depending on rs_state, to remember | |
| 3593 * more things. | |
| 3594 */ | |
| 3595 typedef struct regitem_S | |
| 3596 { | |
| 3597 regstate_T rs_state; /* what we are doing, one of RS_ above */ | |
| 3598 char_u *rs_scan; /* current node in program */ | |
| 3599 union | |
| 3600 { | |
| 3601 save_se_T sesave; | |
| 3602 regsave_T regsave; | |
| 3603 } rs_un; /* room for saving reginput */ | |
| 1579 | 3604 short rs_no; /* submatch nr or BEHIND/NOBEHIND */ |
| 270 | 3605 } regitem_T; |
| 3606 | |
| 3607 static regitem_T *regstack_push __ARGS((regstate_T state, char_u *scan)); | |
| 3608 static void regstack_pop __ARGS((char_u **scan)); | |
| 3609 | |
| 3610 /* used for STAR, PLUS and BRACE_SIMPLE matching */ | |
| 3611 typedef struct regstar_S | |
| 3612 { | |
| 3613 int nextb; /* next byte */ | |
| 3614 int nextb_ic; /* next byte reverse case */ | |
| 3615 long count; | |
| 3616 long minval; | |
| 3617 long maxval; | |
| 3618 } regstar_T; | |
| 3619 | |
| 3620 /* used to store input position when a BACK was encountered, so that we now if | |
| 3621 * we made any progress since the last time. */ | |
| 3622 typedef struct backpos_S | |
| 3623 { | |
| 3624 char_u *bp_scan; /* "scan" where BACK was encountered */ | |
| 3625 regsave_T bp_pos; /* last input position */ | |
| 3626 } backpos_T; | |
| 3627 | |
| 3628 /* | |
| 1520 | 3629 * "regstack" and "backpos" are used by regmatch(). They are kept over calls |
| 3630 * to avoid invoking malloc() and free() often. | |
| 3631 * "regstack" is a stack with regitem_T items, sometimes preceded by regstar_T | |
| 3632 * or regbehind_T. | |
| 3633 * "backpos_T" is a table with backpos_T for BACK | |
| 270 | 3634 */ |
| 1520 | 3635 static garray_T regstack = {0, 0, 0, 0, NULL}; |
| 3636 static garray_T backpos = {0, 0, 0, 0, NULL}; | |
| 3637 | |
| 3638 /* | |
| 3639 * Both for regstack and backpos tables we use the following strategy of | |
| 3640 * allocation (to reduce malloc/free calls): | |
| 3641 * - Initial size is fairly small. | |
| 3642 * - When needed, the tables are grown bigger (8 times at first, double after | |
| 3643 * that). | |
| 3644 * - After executing the match we free the memory only if the array has grown. | |
| 3645 * Thus the memory is kept allocated when it's at the initial size. | |
| 3646 * This makes it fast while not keeping a lot of memory allocated. | |
| 3647 * A three times speed increase was observed when using many simple patterns. | |
| 3648 */ | |
| 3649 #define REGSTACK_INITIAL 2048 | |
| 3650 #define BACKPOS_INITIAL 64 | |
| 3651 | |
| 3652 #if defined(EXITFREE) || defined(PROTO) | |
| 3653 void | |
| 3654 free_regexp_stuff() | |
| 3655 { | |
| 3656 ga_clear(®stack); | |
| 3657 ga_clear(&backpos); | |
| 3658 vim_free(reg_tofree); | |
| 3659 vim_free(reg_prev_sub); | |
| 3660 } | |
| 3661 #endif | |
| 270 | 3662 |
| 7 | 3663 /* |
| 3664 * Get pointer to the line "lnum", which is relative to "reg_firstlnum". | |
| 3665 */ | |
| 3666 static char_u * | |
| 3667 reg_getline(lnum) | |
| 3668 linenr_T lnum; | |
| 3669 { | |
| 3670 /* when looking behind for a match/no-match lnum is negative. But we | |
| 3671 * can't go before line 1 */ | |
| 3672 if (reg_firstlnum + lnum < 1) | |
| 3673 return NULL; | |
| 482 | 3674 if (lnum > reg_maxline) |
| 481 | 3675 /* Must have matched the "\n" in the last line. */ |
| 3676 return (char_u *)""; | |
| 7 | 3677 return ml_get_buf(reg_buf, reg_firstlnum + lnum, FALSE); |
| 3678 } | |
| 3679 | |
| 3680 static regsave_T behind_pos; | |
| 3681 | |
| 3682 #ifdef FEAT_SYN_HL | |
| 3683 static char_u *reg_startzp[NSUBEXP]; /* Workspace to mark beginning */ | |
| 3684 static char_u *reg_endzp[NSUBEXP]; /* and end of \z(...\) matches */ | |
| 3685 static lpos_T reg_startzpos[NSUBEXP]; /* idem, beginning pos */ | |
| 3686 static lpos_T reg_endzpos[NSUBEXP]; /* idem, end pos */ | |
| 3687 #endif | |
| 3688 | |
| 3689 /* TRUE if using multi-line regexp. */ | |
| 3690 #define REG_MULTI (reg_match == NULL) | |
| 3691 | |
| 4444 | 3692 static int bt_regexec __ARGS((regmatch_T *rmp, char_u *line, colnr_T col)); |
| 3693 | |
| 7 | 3694 /* |
| 3695 * Match a regexp against a string. | |
| 3696 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
| 3697 * Uses curbuf for line count and 'iskeyword'. | |
| 3698 * | |
| 3699 * Return TRUE if there is a match, FALSE if not. | |
| 3700 */ | |
| 4444 | 3701 static int |
| 3702 bt_regexec(rmp, line, col) | |
| 7 | 3703 regmatch_T *rmp; |
| 3704 char_u *line; /* string to match against */ | |
| 3705 colnr_T col; /* column to start looking for match */ | |
| 3706 { | |
| 3707 reg_match = rmp; | |
| 3708 reg_mmatch = NULL; | |
| 3709 reg_maxline = 0; | |
| 3710 reg_line_lbr = FALSE; | |
| 4061 | 3711 reg_buf = curbuf; |
| 7 | 3712 reg_win = NULL; |
| 3713 ireg_ic = rmp->rm_ic; | |
| 3714 #ifdef FEAT_MBYTE | |
| 3715 ireg_icombine = FALSE; | |
| 3716 #endif | |
| 410 | 3717 ireg_maxcol = 0; |
| 4444 | 3718 return (bt_regexec_both(line, col, NULL) != 0); |
| 7 | 3719 } |
| 3720 | |
| 39 | 3721 #if defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) \ |
| 3722 || defined(FIND_REPLACE_DIALOG) || defined(PROTO) | |
| 4444 | 3723 |
| 3724 static int bt_regexec_nl __ARGS((regmatch_T *rmp, char_u *line, colnr_T col)); | |
| 3725 | |
| 7 | 3726 /* |
| 3727 * Like vim_regexec(), but consider a "\n" in "line" to be a line break. | |
| 3728 */ | |
| 4444 | 3729 static int |
| 3730 bt_regexec_nl(rmp, line, col) | |
| 7 | 3731 regmatch_T *rmp; |
| 3732 char_u *line; /* string to match against */ | |
| 3733 colnr_T col; /* column to start looking for match */ | |
| 3734 { | |
| 3735 reg_match = rmp; | |
| 3736 reg_mmatch = NULL; | |
| 3737 reg_maxline = 0; | |
| 3738 reg_line_lbr = TRUE; | |
| 4061 | 3739 reg_buf = curbuf; |
| 7 | 3740 reg_win = NULL; |
| 3741 ireg_ic = rmp->rm_ic; | |
| 3742 #ifdef FEAT_MBYTE | |
| 3743 ireg_icombine = FALSE; | |
| 3744 #endif | |
| 410 | 3745 ireg_maxcol = 0; |
| 4444 | 3746 return (bt_regexec_both(line, col, NULL) != 0); |
| 7 | 3747 } |
| 3748 #endif | |
| 3749 | |
| 4444 | 3750 static long bt_regexec_multi __ARGS((regmmatch_T *rmp, win_T *win, buf_T *buf, linenr_T lnum, colnr_T col, proftime_T *tm)); |
| 3751 | |
| 7 | 3752 /* |
| 3753 * Match a regexp against multiple lines. | |
| 3754 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
| 3755 * Uses curbuf for line count and 'iskeyword'. | |
| 3756 * | |
| 3757 * Return zero if there is no match. Return number of lines contained in the | |
| 3758 * match otherwise. | |
| 3759 */ | |
| 4444 | 3760 static long |
| 3761 bt_regexec_multi(rmp, win, buf, lnum, col, tm) | |
| 7 | 3762 regmmatch_T *rmp; |
| 3763 win_T *win; /* window in which to search or NULL */ | |
| 3764 buf_T *buf; /* buffer in which to search */ | |
| 3765 linenr_T lnum; /* nr of line to start looking for match */ | |
| 3766 colnr_T col; /* column to start looking for match */ | |
| 1521 | 3767 proftime_T *tm; /* timeout limit or NULL */ |
| 7 | 3768 { |
| 3769 long r; | |
| 3770 | |
| 3771 reg_match = NULL; | |
| 3772 reg_mmatch = rmp; | |
| 3773 reg_buf = buf; | |
| 3774 reg_win = win; | |
| 3775 reg_firstlnum = lnum; | |
| 3776 reg_maxline = reg_buf->b_ml.ml_line_count - lnum; | |
| 3777 reg_line_lbr = FALSE; | |
| 3778 ireg_ic = rmp->rmm_ic; | |
| 3779 #ifdef FEAT_MBYTE | |
| 3780 ireg_icombine = FALSE; | |
| 3781 #endif | |
| 410 | 3782 ireg_maxcol = rmp->rmm_maxcol; |
| 7 | 3783 |
| 4444 | 3784 r = bt_regexec_both(NULL, col, tm); |
| 7 | 3785 |
| 3786 return r; | |
| 3787 } | |
| 3788 | |
| 3789 /* | |
| 3790 * Match a regexp against a string ("line" points to the string) or multiple | |
| 3791 * lines ("line" is NULL, use reg_getline()). | |
| 3792 */ | |
| 3793 static long | |
| 4444 | 3794 bt_regexec_both(line, col, tm) |
| 7 | 3795 char_u *line; |
| 3796 colnr_T col; /* column to start looking for match */ | |
| 1877 | 3797 proftime_T *tm UNUSED; /* timeout limit or NULL */ |
| 7 | 3798 { |
| 4444 | 3799 bt_regprog_T *prog; |
| 7 | 3800 char_u *s; |
| 189 | 3801 long retval = 0L; |
| 7 | 3802 |
| 1520 | 3803 /* Create "regstack" and "backpos" if they are not allocated yet. |
| 3804 * We allocate *_INITIAL amount of bytes first and then set the grow size | |
| 3805 * to much bigger value to avoid many malloc calls in case of deep regular | |
| 3806 * expressions. */ | |
| 3807 if (regstack.ga_data == NULL) | |
| 3808 { | |
| 3809 /* Use an item size of 1 byte, since we push different things | |
| 3810 * onto the regstack. */ | |
| 3811 ga_init2(®stack, 1, REGSTACK_INITIAL); | |
| 3812 ga_grow(®stack, REGSTACK_INITIAL); | |
| 3813 regstack.ga_growsize = REGSTACK_INITIAL * 8; | |
| 3814 } | |
| 3815 | |
| 3816 if (backpos.ga_data == NULL) | |
| 3817 { | |
| 3818 ga_init2(&backpos, sizeof(backpos_T), BACKPOS_INITIAL); | |
| 3819 ga_grow(&backpos, BACKPOS_INITIAL); | |
| 3820 backpos.ga_growsize = BACKPOS_INITIAL * 8; | |
| 3821 } | |
| 270 | 3822 |
| 7 | 3823 if (REG_MULTI) |
| 3824 { | |
| 4444 | 3825 prog = (bt_regprog_T *)reg_mmatch->regprog; |
| 7 | 3826 line = reg_getline((linenr_T)0); |
| 3827 reg_startpos = reg_mmatch->startpos; | |
| 3828 reg_endpos = reg_mmatch->endpos; | |
| 3829 } | |
| 3830 else | |
| 3831 { | |
| 4444 | 3832 prog = (bt_regprog_T *)reg_match->regprog; |
| 7 | 3833 reg_startp = reg_match->startp; |
| 3834 reg_endp = reg_match->endp; | |
| 3835 } | |
| 3836 | |
| 3837 /* Be paranoid... */ | |
| 3838 if (prog == NULL || line == NULL) | |
| 3839 { | |
| 3840 EMSG(_(e_null)); | |
| 3841 goto theend; | |
| 3842 } | |
| 3843 | |
| 3844 /* Check validity of program. */ | |
| 3845 if (prog_magic_wrong()) | |
| 3846 goto theend; | |
| 3847 | |
| 410 | 3848 /* If the start column is past the maximum column: no need to try. */ |
| 3849 if (ireg_maxcol > 0 && col >= ireg_maxcol) | |
| 3850 goto theend; | |
| 3851 | |
| 7 | 3852 /* If pattern contains "\c" or "\C": overrule value of ireg_ic */ |
| 3853 if (prog->regflags & RF_ICASE) | |
| 3854 ireg_ic = TRUE; | |
| 3855 else if (prog->regflags & RF_NOICASE) | |
| 3856 ireg_ic = FALSE; | |
| 3857 | |
| 3858 #ifdef FEAT_MBYTE | |
| 3859 /* If pattern contains "\Z" overrule value of ireg_icombine */ | |
| 3860 if (prog->regflags & RF_ICOMBINE) | |
| 3861 ireg_icombine = TRUE; | |
| 3862 #endif | |
| 3863 | |
| 3864 /* If there is a "must appear" string, look for it. */ | |
| 3865 if (prog->regmust != NULL) | |
| 3866 { | |
| 3867 int c; | |
| 3868 | |
| 3869 #ifdef FEAT_MBYTE | |
| 3870 if (has_mbyte) | |
| 3871 c = (*mb_ptr2char)(prog->regmust); | |
| 3872 else | |
| 3873 #endif | |
| 3874 c = *prog->regmust; | |
| 3875 s = line + col; | |
| 170 | 3876 |
| 3877 /* | |
| 3878 * This is used very often, esp. for ":global". Use three versions of | |
| 3879 * the loop to avoid overhead of conditions. | |
| 3880 */ | |
| 3881 if (!ireg_ic | |
| 3882 #ifdef FEAT_MBYTE | |
| 3883 && !has_mbyte | |
| 3884 #endif | |
| 3885 ) | |
| 3886 while ((s = vim_strbyte(s, c)) != NULL) | |
| 3887 { | |
| 3888 if (cstrncmp(s, prog->regmust, &prog->regmlen) == 0) | |
| 3889 break; /* Found it. */ | |
| 3890 ++s; | |
| 3891 } | |
| 3892 #ifdef FEAT_MBYTE | |
| 3893 else if (!ireg_ic || (!enc_utf8 && mb_char2len(c) > 1)) | |
| 3894 while ((s = vim_strchr(s, c)) != NULL) | |
| 3895 { | |
| 3896 if (cstrncmp(s, prog->regmust, &prog->regmlen) == 0) | |
| 3897 break; /* Found it. */ | |
| 3898 mb_ptr_adv(s); | |
| 3899 } | |
| 3900 #endif | |
| 3901 else | |
| 3902 while ((s = cstrchr(s, c)) != NULL) | |
| 3903 { | |
| 3904 if (cstrncmp(s, prog->regmust, &prog->regmlen) == 0) | |
| 3905 break; /* Found it. */ | |
| 3906 mb_ptr_adv(s); | |
| 3907 } | |
| 7 | 3908 if (s == NULL) /* Not present. */ |
| 3909 goto theend; | |
| 3910 } | |
| 3911 | |
| 3912 regline = line; | |
| 3913 reglnum = 0; | |
| 2578 | 3914 reg_toolong = FALSE; |
| 7 | 3915 |
| 3916 /* Simplest case: Anchored match need be tried only once. */ | |
| 3917 if (prog->reganch) | |
| 3918 { | |
| 3919 int c; | |
| 3920 | |
| 3921 #ifdef FEAT_MBYTE | |
| 3922 if (has_mbyte) | |
| 3923 c = (*mb_ptr2char)(regline + col); | |
| 3924 else | |
| 3925 #endif | |
| 3926 c = regline[col]; | |
| 3927 if (prog->regstart == NUL | |
| 3928 || prog->regstart == c | |
| 3929 || (ireg_ic && (( | |
| 3930 #ifdef FEAT_MBYTE | |
| 3931 (enc_utf8 && utf_fold(prog->regstart) == utf_fold(c))) | |
| 3932 || (c < 255 && prog->regstart < 255 && | |
| 3933 #endif | |
| 1347 | 3934 MB_TOLOWER(prog->regstart) == MB_TOLOWER(c))))) |
| 7 | 3935 retval = regtry(prog, col); |
| 3936 else | |
| 3937 retval = 0; | |
| 3938 } | |
| 3939 else | |
| 3940 { | |
| 1521 | 3941 #ifdef FEAT_RELTIME |
| 3942 int tm_count = 0; | |
| 3943 #endif | |
| 7 | 3944 /* Messy cases: unanchored match. */ |
| 180 | 3945 while (!got_int) |
| 7 | 3946 { |
| 3947 if (prog->regstart != NUL) | |
| 3948 { | |
| 170 | 3949 /* Skip until the char we know it must start with. |
| 3950 * Used often, do some work to avoid call overhead. */ | |
| 3951 if (!ireg_ic | |
| 3952 #ifdef FEAT_MBYTE | |
| 3953 && !has_mbyte | |
| 3954 #endif | |
| 3955 ) | |
| 3956 s = vim_strbyte(regline + col, prog->regstart); | |
| 3957 else | |
| 3958 s = cstrchr(regline + col, prog->regstart); | |
| 7 | 3959 if (s == NULL) |
| 3960 { | |
| 3961 retval = 0; | |
| 3962 break; | |
| 3963 } | |
| 3964 col = (int)(s - regline); | |
| 3965 } | |
| 3966 | |
| 410 | 3967 /* Check for maximum column to try. */ |
| 3968 if (ireg_maxcol > 0 && col >= ireg_maxcol) | |
| 3969 { | |
| 3970 retval = 0; | |
| 3971 break; | |
| 3972 } | |
| 3973 | |
| 7 | 3974 retval = regtry(prog, col); |
| 3975 if (retval > 0) | |
| 3976 break; | |
| 3977 | |
| 3978 /* if not currently on the first line, get it again */ | |
| 3979 if (reglnum != 0) | |
| 3980 { | |
| 481 | 3981 reglnum = 0; |
| 7 | 3982 regline = reg_getline((linenr_T)0); |
| 3983 } | |
| 3984 if (regline[col] == NUL) | |
| 3985 break; | |
| 3986 #ifdef FEAT_MBYTE | |
| 3987 if (has_mbyte) | |
| 474 | 3988 col += (*mb_ptr2len)(regline + col); |
| 7 | 3989 else |
| 3990 #endif | |
| 3991 ++col; | |
| 1521 | 3992 #ifdef FEAT_RELTIME |
| 3993 /* Check for timeout once in a twenty times to avoid overhead. */ | |
| 3994 if (tm != NULL && ++tm_count == 20) | |
| 3995 { | |
| 3996 tm_count = 0; | |
| 3997 if (profile_passed_limit(tm)) | |
| 3998 break; | |
| 3999 } | |
| 4000 #endif | |
| 7 | 4001 } |
| 4002 } | |
| 4003 | |
| 4004 theend: | |
| 1520 | 4005 /* Free "reg_tofree" when it's a bit big. |
| 4006 * Free regstack and backpos if they are bigger than their initial size. */ | |
| 4007 if (reg_tofreelen > 400) | |
| 4008 { | |
| 4009 vim_free(reg_tofree); | |
| 4010 reg_tofree = NULL; | |
| 4011 } | |
| 4012 if (regstack.ga_maxlen > REGSTACK_INITIAL) | |
| 4013 ga_clear(®stack); | |
| 4014 if (backpos.ga_maxlen > BACKPOS_INITIAL) | |
| 4015 ga_clear(&backpos); | |
| 270 | 4016 |
| 7 | 4017 return retval; |
| 4018 } | |
| 4019 | |
| 4020 #ifdef FEAT_SYN_HL | |
| 4021 static reg_extmatch_T *make_extmatch __ARGS((void)); | |
| 4022 | |
| 4023 /* | |
| 4024 * Create a new extmatch and mark it as referenced once. | |
| 4025 */ | |
| 4026 static reg_extmatch_T * | |
| 4027 make_extmatch() | |
| 4028 { | |
| 4029 reg_extmatch_T *em; | |
| 4030 | |
| 4031 em = (reg_extmatch_T *)alloc_clear((unsigned)sizeof(reg_extmatch_T)); | |
| 4032 if (em != NULL) | |
| 4033 em->refcnt = 1; | |
| 4034 return em; | |
| 4035 } | |
| 4036 | |
| 4037 /* | |
| 4038 * Add a reference to an extmatch. | |
| 4039 */ | |
| 4040 reg_extmatch_T * | |
| 4041 ref_extmatch(em) | |
| 4042 reg_extmatch_T *em; | |
| 4043 { | |
| 4044 if (em != NULL) | |
| 4045 em->refcnt++; | |
| 4046 return em; | |
| 4047 } | |
| 4048 | |
| 4049 /* | |
| 4050 * Remove a reference to an extmatch. If there are no references left, free | |
| 4051 * the info. | |
| 4052 */ | |
| 4053 void | |
| 4054 unref_extmatch(em) | |
| 4055 reg_extmatch_T *em; | |
| 4056 { | |
| 4057 int i; | |
| 4058 | |
| 4059 if (em != NULL && --em->refcnt <= 0) | |
| 4060 { | |
| 4061 for (i = 0; i < NSUBEXP; ++i) | |
| 4062 vim_free(em->matches[i]); | |
| 4063 vim_free(em); | |
| 4064 } | |
| 4065 } | |
| 4066 #endif | |
| 4067 | |
| 4068 /* | |
| 4069 * regtry - try match of "prog" with at regline["col"]. | |
| 4070 * Returns 0 for failure, number of lines contained in the match otherwise. | |
| 4071 */ | |
| 4072 static long | |
| 4073 regtry(prog, col) | |
| 4444 | 4074 bt_regprog_T *prog; |
| 7 | 4075 colnr_T col; |
| 4076 { | |
| 4077 reginput = regline + col; | |
| 4078 need_clear_subexpr = TRUE; | |
| 4079 #ifdef FEAT_SYN_HL | |
| 4080 /* Clear the external match subpointers if necessary. */ | |
| 4081 if (prog->reghasz == REX_SET) | |
| 4082 need_clear_zsubexpr = TRUE; | |
| 4083 #endif | |
| 4084 | |
| 189 | 4085 if (regmatch(prog->program + 1) == 0) |
| 4086 return 0; | |
| 4087 | |
| 4088 cleanup_subexpr(); | |
| 4089 if (REG_MULTI) | |
| 7 | 4090 { |
| 189 | 4091 if (reg_startpos[0].lnum < 0) |
| 7 | 4092 { |
| 189 | 4093 reg_startpos[0].lnum = 0; |
| 4094 reg_startpos[0].col = col; | |
| 4095 } | |
| 4096 if (reg_endpos[0].lnum < 0) | |
| 4097 { | |
| 4098 reg_endpos[0].lnum = reglnum; | |
| 4099 reg_endpos[0].col = (int)(reginput - regline); | |
| 7 | 4100 } |
| 4101 else | |
| 189 | 4102 /* Use line number of "\ze". */ |
| 4103 reglnum = reg_endpos[0].lnum; | |
| 4104 } | |
| 4105 else | |
| 4106 { | |
| 4107 if (reg_startp[0] == NULL) | |
| 4108 reg_startp[0] = regline + col; | |
| 4109 if (reg_endp[0] == NULL) | |
| 4110 reg_endp[0] = reginput; | |
| 4111 } | |
| 7 | 4112 #ifdef FEAT_SYN_HL |
| 189 | 4113 /* Package any found \z(...\) matches for export. Default is none. */ |
| 4114 unref_extmatch(re_extmatch_out); | |
| 4115 re_extmatch_out = NULL; | |
| 4116 | |
| 4117 if (prog->reghasz == REX_SET) | |
| 4118 { | |
| 4119 int i; | |
| 4120 | |
| 4121 cleanup_zsubexpr(); | |
| 4122 re_extmatch_out = make_extmatch(); | |
| 4123 for (i = 0; i < NSUBEXP; i++) | |
| 7 | 4124 { |
| 189 | 4125 if (REG_MULTI) |
| 7 | 4126 { |
| 189 | 4127 /* Only accept single line matches. */ |
| 4128 if (reg_startzpos[i].lnum >= 0 | |
| 4129 && reg_endzpos[i].lnum == reg_startzpos[i].lnum) | |
| 4130 re_extmatch_out->matches[i] = | |
| 4131 vim_strnsave(reg_getline(reg_startzpos[i].lnum) | |
| 7 | 4132 + reg_startzpos[i].col, |
| 189 | 4133 reg_endzpos[i].col - reg_startzpos[i].col); |
| 4134 } | |
| 4135 else | |
| 4136 { | |
| 4137 if (reg_startzp[i] != NULL && reg_endzp[i] != NULL) | |
| 4138 re_extmatch_out->matches[i] = | |
| 7 | 4139 vim_strnsave(reg_startzp[i], |
| 189 | 4140 (int)(reg_endzp[i] - reg_startzp[i])); |
| 7 | 4141 } |
| 4142 } | |
| 189 | 4143 } |
| 7 | 4144 #endif |
| 189 | 4145 return 1 + reglnum; |
| 7 | 4146 } |
| 4147 | |
| 4148 #ifdef FEAT_MBYTE | |
| 4149 static int reg_prev_class __ARGS((void)); | |
| 4150 | |
| 4151 /* | |
| 4152 * Get class of previous character. | |
| 4153 */ | |
| 4154 static int | |
| 4155 reg_prev_class() | |
| 4156 { | |
| 4157 if (reginput > regline) | |
| 4069 | 4158 return mb_get_class_buf(reginput - 1 |
| 4159 - (*mb_head_off)(regline, reginput - 1), reg_buf); | |
| 7 | 4160 return -1; |
| 4161 } | |
| 4162 | |
| 4163 #endif | |
| 39 | 4164 #define ADVANCE_REGINPUT() mb_ptr_adv(reginput) |
| 7 | 4165 |
| 4166 /* | |
| 4167 * The arguments from BRACE_LIMITS are stored here. They are actually local | |
| 4168 * to regmatch(), but they are here to reduce the amount of stack space used | |
| 4169 * (it can be called recursively many times). | |
| 4170 */ | |
| 4171 static long bl_minval; | |
| 4172 static long bl_maxval; | |
| 4173 | |
| 4174 /* | |
| 4175 * regmatch - main matching routine | |
| 4176 * | |
| 180 | 4177 * Conceptually the strategy is simple: Check to see whether the current node |
| 4178 * matches, push an item onto the regstack and loop to see whether the rest | |
| 4179 * matches, and then act accordingly. In practice we make some effort to | |
| 4180 * avoid using the regstack, in particular by going through "ordinary" nodes | |
| 4181 * (that don't need to know whether the rest of the match failed) by a nested | |
| 4182 * loop. | |
| 7 | 4183 * |
| 4184 * Returns TRUE when there is a match. Leaves reginput and reglnum just after | |
| 4185 * the last matched character. | |
| 4186 * Returns FALSE when there is no match. Leaves reginput and reglnum in an | |
| 4187 * undefined state! | |
| 4188 */ | |
| 4189 static int | |
| 180 | 4190 regmatch(scan) |
| 7 | 4191 char_u *scan; /* Current node. */ |
| 4192 { | |
| 180 | 4193 char_u *next; /* Next node. */ |
| 4194 int op; | |
| 4195 int c; | |
| 4196 regitem_T *rp; | |
| 4197 int no; | |
| 4198 int status; /* one of the RA_ values: */ | |
| 4199 #define RA_FAIL 1 /* something failed, abort */ | |
| 4200 #define RA_CONT 2 /* continue in inner loop */ | |
| 4201 #define RA_BREAK 3 /* break inner loop */ | |
| 4202 #define RA_MATCH 4 /* successful match */ | |
| 4203 #define RA_NOMATCH 5 /* didn't match */ | |
| 270 | 4204 |
| 1520 | 4205 /* Make "regstack" and "backpos" empty. They are allocated and freed in |
| 4444 | 4206 * bt_regexec_both() to reduce malloc()/free() calls. */ |
| 270 | 4207 regstack.ga_len = 0; |
| 4208 backpos.ga_len = 0; | |
| 233 | 4209 |
| 180 | 4210 /* |
| 233 | 4211 * Repeat until "regstack" is empty. |
| 180 | 4212 */ |
| 4213 for (;;) | |
| 4214 { | |
| 4444 | 4215 /* Some patterns may cause a long time to match, even though they are not |
| 7 | 4216 * illegal. E.g., "\([a-z]\+\)\+Q". Allow breaking them with CTRL-C. */ |
| 4217 fast_breakcheck(); | |
| 4218 | |
| 4219 #ifdef DEBUG | |
| 4220 if (scan != NULL && regnarrate) | |
| 4221 { | |
| 4444 | 4222 mch_errmsg((char *)regprop(scan)); |
| 7 | 4223 mch_errmsg("(\n"); |
| 4224 } | |
| 4225 #endif | |
| 180 | 4226 |
| 4227 /* | |
| 233 | 4228 * Repeat for items that can be matched sequentially, without using the |
| 180 | 4229 * regstack. |
| 4230 */ | |
| 4231 for (;;) | |
| 7 | 4232 { |
| 180 | 4233 if (got_int || scan == NULL) |
| 4234 { | |
| 4235 status = RA_FAIL; | |
| 4236 break; | |
| 4237 } | |
| 4238 status = RA_CONT; | |
| 4239 | |
| 7 | 4240 #ifdef DEBUG |
| 4241 if (regnarrate) | |
| 4242 { | |
| 4444 | 4243 mch_errmsg((char *)regprop(scan)); |
| 7 | 4244 mch_errmsg("...\n"); |
| 4245 # ifdef FEAT_SYN_HL | |
| 4246 if (re_extmatch_in != NULL) | |
| 4247 { | |
| 4248 int i; | |
| 4249 | |
| 4250 mch_errmsg(_("External submatches:\n")); | |
| 4251 for (i = 0; i < NSUBEXP; i++) | |
| 4252 { | |
| 4253 mch_errmsg(" \""); | |
| 4254 if (re_extmatch_in->matches[i] != NULL) | |
| 4444 | 4255 mch_errmsg((char *)re_extmatch_in->matches[i]); |
| 7 | 4256 mch_errmsg("\"\n"); |
| 4257 } | |
| 4258 } | |
| 4259 # endif | |
| 4260 } | |
| 4261 #endif | |
| 4262 next = regnext(scan); | |
| 4263 | |
| 4264 op = OP(scan); | |
| 4265 /* Check for character class with NL added. */ | |
| 1018 | 4266 if (!reg_line_lbr && WITH_NL(op) && REG_MULTI |
| 4267 && *reginput == NUL && reglnum <= reg_maxline) | |
| 7 | 4268 { |
| 4269 reg_nextline(); | |
| 4270 } | |
| 4271 else if (reg_line_lbr && WITH_NL(op) && *reginput == '\n') | |
| 4272 { | |
| 4273 ADVANCE_REGINPUT(); | |
| 4274 } | |
| 4275 else | |
| 4276 { | |
| 4277 if (WITH_NL(op)) | |
| 180 | 4278 op -= ADD_NL; |
| 7 | 4279 #ifdef FEAT_MBYTE |
| 4280 if (has_mbyte) | |
| 4281 c = (*mb_ptr2char)(reginput); | |
| 4282 else | |
| 4283 #endif | |
| 4284 c = *reginput; | |
| 4285 switch (op) | |
| 4286 { | |
| 4287 case BOL: | |
| 4288 if (reginput != regline) | |
| 180 | 4289 status = RA_NOMATCH; |
| 7 | 4290 break; |
| 4291 | |
| 4292 case EOL: | |
| 4293 if (c != NUL) | |
| 180 | 4294 status = RA_NOMATCH; |
| 7 | 4295 break; |
| 4296 | |
| 4297 case RE_BOF: | |
| 1458 | 4298 /* We're not at the beginning of the file when below the first |
| 4299 * line where we started, not at the start of the line or we | |
| 4300 * didn't start at the first line of the buffer. */ | |
| 7 | 4301 if (reglnum != 0 || reginput != regline |
| 1458 | 4302 || (REG_MULTI && reg_firstlnum > 1)) |
| 180 | 4303 status = RA_NOMATCH; |
| 7 | 4304 break; |
| 4305 | |
| 4306 case RE_EOF: | |
| 4307 if (reglnum != reg_maxline || c != NUL) | |
| 180 | 4308 status = RA_NOMATCH; |
| 7 | 4309 break; |
| 4310 | |
| 4311 case CURSOR: | |
| 4312 /* Check if the buffer is in a window and compare the | |
| 4313 * reg_win->w_cursor position to the match position. */ | |
| 4314 if (reg_win == NULL | |
| 4315 || (reglnum + reg_firstlnum != reg_win->w_cursor.lnum) | |
| 4316 || ((colnr_T)(reginput - regline) != reg_win->w_cursor.col)) | |
| 180 | 4317 status = RA_NOMATCH; |
| 7 | 4318 break; |
| 4319 | |
| 639 | 4320 case RE_MARK: |
| 4321 /* Compare the mark position to the match position. NOTE: Always | |
| 4322 * uses the current buffer. */ | |
| 4323 { | |
| 4324 int mark = OPERAND(scan)[0]; | |
| 4325 int cmp = OPERAND(scan)[1]; | |
| 4326 pos_T *pos; | |
| 4327 | |
| 4043 | 4328 pos = getmark_buf(reg_buf, mark, FALSE); |
| 1148 | 4329 if (pos == NULL /* mark doesn't exist */ |
| 639 | 4330 || pos->lnum <= 0 /* mark isn't set (in curbuf) */ |
| 4331 || (pos->lnum == reglnum + reg_firstlnum | |
| 4332 ? (pos->col == (colnr_T)(reginput - regline) | |
| 4333 ? (cmp == '<' || cmp == '>') | |
| 4334 : (pos->col < (colnr_T)(reginput - regline) | |
| 4335 ? cmp != '>' | |
| 4336 : cmp != '<')) | |
| 4337 : (pos->lnum < reglnum + reg_firstlnum | |
| 4338 ? cmp != '>' | |
| 4339 : cmp != '<'))) | |
| 4340 status = RA_NOMATCH; | |
| 4341 } | |
| 4342 break; | |
| 4343 | |
| 4344 case RE_VISUAL: | |
| 4345 #ifdef FEAT_VISUAL | |
| 4346 /* Check if the buffer is the current buffer. and whether the | |
| 4347 * position is inside the Visual area. */ | |
| 4348 if (reg_buf != curbuf || VIsual.lnum == 0) | |
| 4349 status = RA_NOMATCH; | |
| 4350 else | |
| 4351 { | |
| 4352 pos_T top, bot; | |
| 4353 linenr_T lnum; | |
| 4354 colnr_T col; | |
| 4355 win_T *wp = reg_win == NULL ? curwin : reg_win; | |
| 4356 int mode; | |
| 4357 | |
| 4358 if (VIsual_active) | |
| 4359 { | |
| 4360 if (lt(VIsual, wp->w_cursor)) | |
| 4361 { | |
| 4362 top = VIsual; | |
| 4363 bot = wp->w_cursor; | |
| 4364 } | |
| 4365 else | |
| 4366 { | |
| 4367 top = wp->w_cursor; | |
| 4368 bot = VIsual; | |
| 4369 } | |
| 4370 mode = VIsual_mode; | |
| 4371 } | |
| 4372 else | |
| 4373 { | |
| 692 | 4374 if (lt(curbuf->b_visual.vi_start, curbuf->b_visual.vi_end)) |
| 685 | 4375 { |
| 692 | 4376 top = curbuf->b_visual.vi_start; |
| 4377 bot = curbuf->b_visual.vi_end; | |
| 685 | 4378 } |
| 4379 else | |
| 4380 { | |
| 692 | 4381 top = curbuf->b_visual.vi_end; |
| 4382 bot = curbuf->b_visual.vi_start; | |
| 685 | 4383 } |
| 692 | 4384 mode = curbuf->b_visual.vi_mode; |
| 639 | 4385 } |
| 4386 lnum = reglnum + reg_firstlnum; | |
| 4387 col = (colnr_T)(reginput - regline); | |
| 4388 if (lnum < top.lnum || lnum > bot.lnum) | |
| 4389 status = RA_NOMATCH; | |
| 4390 else if (mode == 'v') | |
| 4391 { | |
| 4392 if ((lnum == top.lnum && col < top.col) | |
| 4393 || (lnum == bot.lnum | |
| 4394 && col >= bot.col + (*p_sel != 'e'))) | |
| 4395 status = RA_NOMATCH; | |
| 4396 } | |
| 4397 else if (mode == Ctrl_V) | |
| 4398 { | |
| 4399 colnr_T start, end; | |
| 4400 colnr_T start2, end2; | |
| 944 | 4401 colnr_T cols; |
| 639 | 4402 |
| 4403 getvvcol(wp, &top, &start, NULL, &end); | |
| 4404 getvvcol(wp, &bot, &start2, NULL, &end2); | |
| 4405 if (start2 < start) | |
| 4406 start = start2; | |
| 4407 if (end2 > end) | |
| 4408 end = end2; | |
| 4409 if (top.col == MAXCOL || bot.col == MAXCOL) | |
| 4410 end = MAXCOL; | |
| 944 | 4411 cols = win_linetabsize(wp, |
| 639 | 4412 regline, (colnr_T)(reginput - regline)); |
| 944 | 4413 if (cols < start || cols > end - (*p_sel == 'e')) |
| 639 | 4414 status = RA_NOMATCH; |
| 4415 } | |
| 4416 } | |
| 4417 #else | |
| 4418 status = RA_NOMATCH; | |
| 4419 #endif | |
| 4420 break; | |
| 4421 | |
| 7 | 4422 case RE_LNUM: |
| 4423 if (!REG_MULTI || !re_num_cmp((long_u)(reglnum + reg_firstlnum), | |
| 4424 scan)) | |
| 180 | 4425 status = RA_NOMATCH; |
| 7 | 4426 break; |
| 4427 | |
| 4428 case RE_COL: | |
| 4429 if (!re_num_cmp((long_u)(reginput - regline) + 1, scan)) | |
| 180 | 4430 status = RA_NOMATCH; |
| 7 | 4431 break; |
| 4432 | |
| 4433 case RE_VCOL: | |
| 4434 if (!re_num_cmp((long_u)win_linetabsize( | |
| 4435 reg_win == NULL ? curwin : reg_win, | |
| 4436 regline, (colnr_T)(reginput - regline)) + 1, scan)) | |
| 180 | 4437 status = RA_NOMATCH; |
| 7 | 4438 break; |
| 4439 | |
| 4440 case BOW: /* \<word; reginput points to w */ | |
| 4441 if (c == NUL) /* Can't match at end of line */ | |
| 180 | 4442 status = RA_NOMATCH; |
| 7 | 4443 #ifdef FEAT_MBYTE |
| 180 | 4444 else if (has_mbyte) |
| 7 | 4445 { |
| 4446 int this_class; | |
| 4447 | |
| 4448 /* Get class of current and previous char (if it exists). */ | |
| 4069 | 4449 this_class = mb_get_class_buf(reginput, reg_buf); |
| 7 | 4450 if (this_class <= 1) |
| 180 | 4451 status = RA_NOMATCH; /* not on a word at all */ |
| 4452 else if (reg_prev_class() == this_class) | |
| 4453 status = RA_NOMATCH; /* previous char is in same word */ | |
| 7 | 4454 } |
| 4455 #endif | |
| 4456 else | |
| 4457 { | |
| 4061 | 4458 if (!vim_iswordc_buf(c, reg_buf) || (reginput > regline |
| 4459 && vim_iswordc_buf(reginput[-1], reg_buf))) | |
| 180 | 4460 status = RA_NOMATCH; |
| 7 | 4461 } |
| 4462 break; | |
| 4463 | |
| 4464 case EOW: /* word\>; reginput points after d */ | |
| 4465 if (reginput == regline) /* Can't match at start of line */ | |
| 180 | 4466 status = RA_NOMATCH; |
| 7 | 4467 #ifdef FEAT_MBYTE |
| 180 | 4468 else if (has_mbyte) |
| 7 | 4469 { |
| 4470 int this_class, prev_class; | |
| 4471 | |
| 4472 /* Get class of current and previous char (if it exists). */ | |
| 4069 | 4473 this_class = mb_get_class_buf(reginput, reg_buf); |
| 7 | 4474 prev_class = reg_prev_class(); |
| 180 | 4475 if (this_class == prev_class |
| 4476 || prev_class == 0 || prev_class == 1) | |
| 4477 status = RA_NOMATCH; | |
| 7 | 4478 } |
| 180 | 4479 #endif |
| 7 | 4480 else |
| 4481 { | |
| 4043 | 4482 if (!vim_iswordc_buf(reginput[-1], reg_buf) |
| 4483 || (reginput[0] != NUL && vim_iswordc_buf(c, reg_buf))) | |
| 180 | 4484 status = RA_NOMATCH; |
| 7 | 4485 } |
| 4486 break; /* Matched with EOW */ | |
| 4487 | |
| 4488 case ANY: | |
| 4084 | 4489 /* ANY does not match new lines. */ |
| 7 | 4490 if (c == NUL) |
| 180 | 4491 status = RA_NOMATCH; |
| 4492 else | |
| 4493 ADVANCE_REGINPUT(); | |
| 7 | 4494 break; |
| 4495 | |
| 4496 case IDENT: | |
| 4497 if (!vim_isIDc(c)) | |
| 180 | 4498 status = RA_NOMATCH; |
| 4499 else | |
| 4500 ADVANCE_REGINPUT(); | |
| 7 | 4501 break; |
| 4502 | |
| 4503 case SIDENT: | |
| 4504 if (VIM_ISDIGIT(*reginput) || !vim_isIDc(c)) | |
| 180 | 4505 status = RA_NOMATCH; |
| 4506 else | |
| 4507 ADVANCE_REGINPUT(); | |
| 7 | 4508 break; |
| 4509 | |
| 4510 case KWORD: | |
| 4069 | 4511 if (!vim_iswordp_buf(reginput, reg_buf)) |
| 180 | 4512 status = RA_NOMATCH; |
| 4513 else | |
| 4514 ADVANCE_REGINPUT(); | |
| 7 | 4515 break; |
| 4516 | |
| 4517 case SKWORD: | |
| 4069 | 4518 if (VIM_ISDIGIT(*reginput) || !vim_iswordp_buf(reginput, reg_buf)) |
| 180 | 4519 status = RA_NOMATCH; |
| 4520 else | |
| 4521 ADVANCE_REGINPUT(); | |
| 7 | 4522 break; |
| 4523 | |
| 4524 case FNAME: | |
| 4525 if (!vim_isfilec(c)) | |
| 180 | 4526 status = RA_NOMATCH; |
| 4527 else | |
| 4528 ADVANCE_REGINPUT(); | |
| 7 | 4529 break; |
| 4530 | |
| 4531 case SFNAME: | |
| 4532 if (VIM_ISDIGIT(*reginput) || !vim_isfilec(c)) | |
| 180 | 4533 status = RA_NOMATCH; |
| 4534 else | |
| 4535 ADVANCE_REGINPUT(); | |
| 7 | 4536 break; |
| 4537 | |
| 4538 case PRINT: | |
| 4539 if (ptr2cells(reginput) != 1) | |
| 180 | 4540 status = RA_NOMATCH; |
| 4541 else | |
| 4542 ADVANCE_REGINPUT(); | |
| 7 | 4543 break; |
| 4544 | |
| 4545 case SPRINT: | |
| 4546 if (VIM_ISDIGIT(*reginput) || ptr2cells(reginput) != 1) | |
| 180 | 4547 status = RA_NOMATCH; |
| 4548 else | |
| 4549 ADVANCE_REGINPUT(); | |
| 7 | 4550 break; |
| 4551 | |
| 4552 case WHITE: | |
| 4553 if (!vim_iswhite(c)) | |
| 180 | 4554 status = RA_NOMATCH; |
| 4555 else | |
| 4556 ADVANCE_REGINPUT(); | |
| 7 | 4557 break; |
| 4558 | |
| 4559 case NWHITE: | |
| 4560 if (c == NUL || vim_iswhite(c)) | |
| 180 | 4561 status = RA_NOMATCH; |
| 4562 else | |
| 4563 ADVANCE_REGINPUT(); | |
| 7 | 4564 break; |
| 4565 | |
| 4566 case DIGIT: | |
| 4567 if (!ri_digit(c)) | |
| 180 | 4568 status = RA_NOMATCH; |
| 4569 else | |
| 4570 ADVANCE_REGINPUT(); | |
| 7 | 4571 break; |
| 4572 | |
| 4573 case NDIGIT: | |
| 4574 if (c == NUL || ri_digit(c)) | |
| 180 | 4575 status = RA_NOMATCH; |
| 4576 else | |
| 4577 ADVANCE_REGINPUT(); | |
| 7 | 4578 break; |
| 4579 | |
| 4580 case HEX: | |
| 4581 if (!ri_hex(c)) | |
| 180 | 4582 status = RA_NOMATCH; |
| 4583 else | |
| 4584 ADVANCE_REGINPUT(); | |
| 7 | 4585 break; |
| 4586 | |
| 4587 case NHEX: | |
| 4588 if (c == NUL || ri_hex(c)) | |
| 180 | 4589 status = RA_NOMATCH; |
| 4590 else | |
| 4591 ADVANCE_REGINPUT(); | |
| 7 | 4592 break; |
| 4593 | |
| 4594 case OCTAL: | |
| 4595 if (!ri_octal(c)) | |
| 180 | 4596 status = RA_NOMATCH; |
| 4597 else | |
| 4598 ADVANCE_REGINPUT(); | |
| 7 | 4599 break; |
| 4600 | |
| 4601 case NOCTAL: | |
| 4602 if (c == NUL || ri_octal(c)) | |
| 180 | 4603 status = RA_NOMATCH; |
| 4604 else | |
| 4605 ADVANCE_REGINPUT(); | |
| 7 | 4606 break; |
| 4607 | |
| 4608 case WORD: | |
| 4609 if (!ri_word(c)) | |
| 180 | 4610 status = RA_NOMATCH; |
| 4611 else | |
| 4612 ADVANCE_REGINPUT(); | |
| 7 | 4613 break; |
| 4614 | |
| 4615 case NWORD: | |
| 4616 if (c == NUL || ri_word(c)) | |
| 180 | 4617 status = RA_NOMATCH; |
| 4618 else | |
| 4619 ADVANCE_REGINPUT(); | |
| 7 | 4620 break; |
| 4621 | |
| 4622 case HEAD: | |
| 4623 if (!ri_head(c)) | |
| 180 | 4624 status = RA_NOMATCH; |
| 4625 else | |
| 4626 ADVANCE_REGINPUT(); | |
| 7 | 4627 break; |
| 4628 | |
| 4629 case NHEAD: | |
| 4630 if (c == NUL || ri_head(c)) | |
| 180 | 4631 status = RA_NOMATCH; |
| 4632 else | |
| 4633 ADVANCE_REGINPUT(); | |
| 7 | 4634 break; |
| 4635 | |
| 4636 case ALPHA: | |
| 4637 if (!ri_alpha(c)) | |
| 180 | 4638 status = RA_NOMATCH; |
| 4639 else | |
| 4640 ADVANCE_REGINPUT(); | |
| 7 | 4641 break; |
| 4642 | |
| 4643 case NALPHA: | |
| 4644 if (c == NUL || ri_alpha(c)) | |
| 180 | 4645 status = RA_NOMATCH; |
| 4646 else | |
| 4647 ADVANCE_REGINPUT(); | |
| 7 | 4648 break; |
| 4649 | |
| 4650 case LOWER: | |
| 4651 if (!ri_lower(c)) | |
| 180 | 4652 status = RA_NOMATCH; |
| 4653 else | |
| 4654 ADVANCE_REGINPUT(); | |
| 7 | 4655 break; |
| 4656 | |
| 4657 case NLOWER: | |
| 4658 if (c == NUL || ri_lower(c)) | |
| 180 | 4659 status = RA_NOMATCH; |
| 4660 else | |
| 4661 ADVANCE_REGINPUT(); | |
| 7 | 4662 break; |
| 4663 | |
| 4664 case UPPER: | |
| 4665 if (!ri_upper(c)) | |
| 180 | 4666 status = RA_NOMATCH; |
| 4667 else | |
| 4668 ADVANCE_REGINPUT(); | |
| 7 | 4669 break; |
| 4670 | |
| 4671 case NUPPER: | |
| 4672 if (c == NUL || ri_upper(c)) | |
| 180 | 4673 status = RA_NOMATCH; |
| 4674 else | |
| 4675 ADVANCE_REGINPUT(); | |
| 7 | 4676 break; |
| 4677 | |
| 4678 case EXACTLY: | |
| 4679 { | |
| 4680 int len; | |
| 4681 char_u *opnd; | |
| 4682 | |
| 4683 opnd = OPERAND(scan); | |
| 4684 /* Inline the first byte, for speed. */ | |
| 4685 if (*opnd != *reginput | |
| 4686 && (!ireg_ic || ( | |
| 4687 #ifdef FEAT_MBYTE | |
| 4688 !enc_utf8 && | |
| 4689 #endif | |
| 1347 | 4690 MB_TOLOWER(*opnd) != MB_TOLOWER(*reginput)))) |
| 180 | 4691 status = RA_NOMATCH; |
| 4692 else if (*opnd == NUL) | |
| 7 | 4693 { |
| 4694 /* match empty string always works; happens when "~" is | |
| 4695 * empty. */ | |
| 4696 } | |
| 4697 else if (opnd[1] == NUL | |
| 4698 #ifdef FEAT_MBYTE | |
| 4699 && !(enc_utf8 && ireg_ic) | |
| 4700 #endif | |
| 4701 ) | |
| 4702 ++reginput; /* matched a single char */ | |
| 4703 else | |
| 4704 { | |
| 4705 len = (int)STRLEN(opnd); | |
| 4706 /* Need to match first byte again for multi-byte. */ | |
| 4707 if (cstrncmp(opnd, reginput, &len) != 0) | |
| 180 | 4708 status = RA_NOMATCH; |
| 7 | 4709 #ifdef FEAT_MBYTE |
| 4710 /* Check for following composing character. */ | |
| 180 | 4711 else if (enc_utf8 |
| 4712 && UTF_COMPOSINGLIKE(reginput, reginput + len)) | |
| 7 | 4713 { |
| 4714 /* raaron: This code makes a composing character get | |
| 4715 * ignored, which is the correct behavior (sometimes) | |
| 4716 * for voweled Hebrew texts. */ | |
| 4717 if (!ireg_icombine) | |
| 180 | 4718 status = RA_NOMATCH; |
| 7 | 4719 } |
| 180 | 4720 #endif |
| 7 | 4721 else |
| 180 | 4722 reginput += len; |
| 7 | 4723 } |
| 4724 } | |
| 4725 break; | |
| 4726 | |
| 4727 case ANYOF: | |
| 4728 case ANYBUT: | |
| 4729 if (c == NUL) | |
| 180 | 4730 status = RA_NOMATCH; |
| 4731 else if ((cstrchr(OPERAND(scan), c) == NULL) == (op == ANYOF)) | |
| 4732 status = RA_NOMATCH; | |
| 4733 else | |
| 4734 ADVANCE_REGINPUT(); | |
| 7 | 4735 break; |
| 4736 | |
| 4737 #ifdef FEAT_MBYTE | |
| 4738 case MULTIBYTECODE: | |
| 4739 if (has_mbyte) | |
| 4740 { | |
| 4741 int i, len; | |
| 4742 char_u *opnd; | |
| 944 | 4743 int opndc = 0, inpc; |
| 7 | 4744 |
| 4745 opnd = OPERAND(scan); | |
| 4746 /* Safety check (just in case 'encoding' was changed since | |
| 4747 * compiling the program). */ | |
| 474 | 4748 if ((len = (*mb_ptr2len)(opnd)) < 2) |
| 180 | 4749 { |
| 4750 status = RA_NOMATCH; | |
| 4751 break; | |
| 4752 } | |
| 714 | 4753 if (enc_utf8) |
| 4754 opndc = mb_ptr2char(opnd); | |
| 4755 if (enc_utf8 && utf_iscomposing(opndc)) | |
| 4756 { | |
| 4757 /* When only a composing char is given match at any | |
| 4758 * position where that composing char appears. */ | |
| 4759 status = RA_NOMATCH; | |
| 4760 for (i = 0; reginput[i] != NUL; i += utf_char2len(inpc)) | |
| 180 | 4761 { |
| 714 | 4762 inpc = mb_ptr2char(reginput + i); |
| 4763 if (!utf_iscomposing(inpc)) | |
| 4764 { | |
| 4765 if (i > 0) | |
| 4766 break; | |
| 4767 } | |
| 4768 else if (opndc == inpc) | |
| 4769 { | |
| 4770 /* Include all following composing chars. */ | |
| 4771 len = i + mb_ptr2len(reginput + i); | |
| 4772 status = RA_MATCH; | |
| 4773 break; | |
| 4774 } | |
| 180 | 4775 } |
| 714 | 4776 } |
| 4777 else | |
| 4778 for (i = 0; i < len; ++i) | |
| 4779 if (opnd[i] != reginput[i]) | |
| 4780 { | |
| 4781 status = RA_NOMATCH; | |
| 4782 break; | |
| 4783 } | |
| 7 | 4784 reginput += len; |
| 4785 } | |
| 4786 else | |
| 180 | 4787 status = RA_NOMATCH; |
| 7 | 4788 break; |
| 4789 #endif | |
| 4790 | |
| 4791 case NOTHING: | |
| 4792 break; | |
| 4793 | |
| 4794 case BACK: | |
| 233 | 4795 { |
| 4796 int i; | |
| 4797 backpos_T *bp; | |
| 4798 | |
| 4799 /* | |
| 4800 * When we run into BACK we need to check if we don't keep | |
| 4801 * looping without matching any input. The second and later | |
| 4802 * times a BACK is encountered it fails if the input is still | |
| 4803 * at the same position as the previous time. | |
| 4804 * The positions are stored in "backpos" and found by the | |
| 4805 * current value of "scan", the position in the RE program. | |
| 4806 */ | |
| 4807 bp = (backpos_T *)backpos.ga_data; | |
| 4808 for (i = 0; i < backpos.ga_len; ++i) | |
| 4809 if (bp[i].bp_scan == scan) | |
| 4810 break; | |
| 4811 if (i == backpos.ga_len) | |
| 4812 { | |
| 4813 /* First time at this BACK, make room to store the pos. */ | |
| 4814 if (ga_grow(&backpos, 1) == FAIL) | |
| 4815 status = RA_FAIL; | |
| 4816 else | |
| 4817 { | |
| 4818 /* get "ga_data" again, it may have changed */ | |
| 4819 bp = (backpos_T *)backpos.ga_data; | |
| 4820 bp[i].bp_scan = scan; | |
| 4821 ++backpos.ga_len; | |
| 4822 } | |
| 4823 } | |
| 4824 else if (reg_save_equal(&bp[i].bp_pos)) | |
| 4825 /* Still at same position as last time, fail. */ | |
| 4826 status = RA_NOMATCH; | |
| 4827 | |
| 4828 if (status != RA_FAIL && status != RA_NOMATCH) | |
| 4829 reg_save(&bp[i].bp_pos, &backpos); | |
| 4830 } | |
| 179 | 4831 break; |
| 4832 | |
| 7 | 4833 case MOPEN + 0: /* Match start: \zs */ |
| 4834 case MOPEN + 1: /* \( */ | |
| 4835 case MOPEN + 2: | |
| 4836 case MOPEN + 3: | |
| 4837 case MOPEN + 4: | |
| 4838 case MOPEN + 5: | |
| 4839 case MOPEN + 6: | |
| 4840 case MOPEN + 7: | |
| 4841 case MOPEN + 8: | |
| 4842 case MOPEN + 9: | |
| 4843 { | |
| 4844 no = op - MOPEN; | |
| 4845 cleanup_subexpr(); | |
| 270 | 4846 rp = regstack_push(RS_MOPEN, scan); |
| 180 | 4847 if (rp == NULL) |
| 4848 status = RA_FAIL; | |
| 4849 else | |
| 4850 { | |
| 4851 rp->rs_no = no; | |
| 4852 save_se(&rp->rs_un.sesave, ®_startpos[no], | |
| 4853 ®_startp[no]); | |
| 4854 /* We simply continue and handle the result when done. */ | |
| 4855 } | |
| 7 | 4856 } |
| 180 | 4857 break; |
| 7 | 4858 |
| 4859 case NOPEN: /* \%( */ | |
| 4860 case NCLOSE: /* \) after \%( */ | |
| 270 | 4861 if (regstack_push(RS_NOPEN, scan) == NULL) |
| 180 | 4862 status = RA_FAIL; |
| 4863 /* We simply continue and handle the result when done. */ | |
| 4864 break; | |
| 7 | 4865 |
| 4866 #ifdef FEAT_SYN_HL | |
| 4867 case ZOPEN + 1: | |
| 4868 case ZOPEN + 2: | |
| 4869 case ZOPEN + 3: | |
| 4870 case ZOPEN + 4: | |
| 4871 case ZOPEN + 5: | |
| 4872 case ZOPEN + 6: | |
| 4873 case ZOPEN + 7: | |
| 4874 case ZOPEN + 8: | |
| 4875 case ZOPEN + 9: | |
| 4876 { | |
| 4877 no = op - ZOPEN; | |
| 4878 cleanup_zsubexpr(); | |
| 270 | 4879 rp = regstack_push(RS_ZOPEN, scan); |
| 180 | 4880 if (rp == NULL) |
| 4881 status = RA_FAIL; | |
| 4882 else | |
| 4883 { | |
| 4884 rp->rs_no = no; | |
| 4885 save_se(&rp->rs_un.sesave, ®_startzpos[no], | |
| 4886 ®_startzp[no]); | |
| 4887 /* We simply continue and handle the result when done. */ | |
| 4888 } | |
| 7 | 4889 } |
| 180 | 4890 break; |
| 7 | 4891 #endif |
| 4892 | |
| 4893 case MCLOSE + 0: /* Match end: \ze */ | |
| 4894 case MCLOSE + 1: /* \) */ | |
| 4895 case MCLOSE + 2: | |
| 4896 case MCLOSE + 3: | |
| 4897 case MCLOSE + 4: | |
| 4898 case MCLOSE + 5: | |
| 4899 case MCLOSE + 6: | |
| 4900 case MCLOSE + 7: | |
| 4901 case MCLOSE + 8: | |
| 4902 case MCLOSE + 9: | |
| 4903 { | |
| 4904 no = op - MCLOSE; | |
| 4905 cleanup_subexpr(); | |
| 270 | 4906 rp = regstack_push(RS_MCLOSE, scan); |
| 180 | 4907 if (rp == NULL) |
| 4908 status = RA_FAIL; | |
| 4909 else | |
| 4910 { | |
| 4911 rp->rs_no = no; | |
| 4912 save_se(&rp->rs_un.sesave, ®_endpos[no], ®_endp[no]); | |
| 4913 /* We simply continue and handle the result when done. */ | |
| 4914 } | |
| 7 | 4915 } |
| 180 | 4916 break; |
| 7 | 4917 |
| 4918 #ifdef FEAT_SYN_HL | |
| 4919 case ZCLOSE + 1: /* \) after \z( */ | |
| 4920 case ZCLOSE + 2: | |
| 4921 case ZCLOSE + 3: | |
| 4922 case ZCLOSE + 4: | |
| 4923 case ZCLOSE + 5: | |
| 4924 case ZCLOSE + 6: | |
| 4925 case ZCLOSE + 7: | |
| 4926 case ZCLOSE + 8: | |
| 4927 case ZCLOSE + 9: | |
| 4928 { | |
| 4929 no = op - ZCLOSE; | |
| 4930 cleanup_zsubexpr(); | |
| 270 | 4931 rp = regstack_push(RS_ZCLOSE, scan); |
| 180 | 4932 if (rp == NULL) |
| 4933 status = RA_FAIL; | |
| 4934 else | |
| 4935 { | |
| 4936 rp->rs_no = no; | |
| 4937 save_se(&rp->rs_un.sesave, ®_endzpos[no], | |
| 4938 ®_endzp[no]); | |
| 4939 /* We simply continue and handle the result when done. */ | |
| 4940 } | |
| 7 | 4941 } |
| 180 | 4942 break; |
| 7 | 4943 #endif |
| 4944 | |
| 4945 case BACKREF + 1: | |
| 4946 case BACKREF + 2: | |
| 4947 case BACKREF + 3: | |
| 4948 case BACKREF + 4: | |
| 4949 case BACKREF + 5: | |
| 4950 case BACKREF + 6: | |
| 4951 case BACKREF + 7: | |
| 4952 case BACKREF + 8: | |
| 4953 case BACKREF + 9: | |
| 4954 { | |
| 4955 int len; | |
| 4956 linenr_T clnum; | |
| 4957 colnr_T ccol; | |
| 4958 char_u *p; | |
| 4959 | |
| 4960 no = op - BACKREF; | |
| 4961 cleanup_subexpr(); | |
| 4962 if (!REG_MULTI) /* Single-line regexp */ | |
| 4963 { | |
| 1815 | 4964 if (reg_startp[no] == NULL || reg_endp[no] == NULL) |
| 7 | 4965 { |
| 4966 /* Backref was not set: Match an empty string. */ | |
| 4967 len = 0; | |
| 4968 } | |
| 4969 else | |
| 4970 { | |
| 4971 /* Compare current input with back-ref in the same | |
| 4972 * line. */ | |
| 4973 len = (int)(reg_endp[no] - reg_startp[no]); | |
| 4974 if (cstrncmp(reg_startp[no], reginput, &len) != 0) | |
| 180 | 4975 status = RA_NOMATCH; |
| 7 | 4976 } |
| 4977 } | |
| 4978 else /* Multi-line regexp */ | |
| 4979 { | |
| 1815 | 4980 if (reg_startpos[no].lnum < 0 || reg_endpos[no].lnum < 0) |
| 7 | 4981 { |
| 4982 /* Backref was not set: Match an empty string. */ | |
| 4983 len = 0; | |
| 4984 } | |
| 4985 else | |
| 4986 { | |
| 4987 if (reg_startpos[no].lnum == reglnum | |
| 4988 && reg_endpos[no].lnum == reglnum) | |
| 4989 { | |
| 4990 /* Compare back-ref within the current line. */ | |
| 4991 len = reg_endpos[no].col - reg_startpos[no].col; | |
| 4992 if (cstrncmp(regline + reg_startpos[no].col, | |
| 4993 reginput, &len) != 0) | |
| 180 | 4994 status = RA_NOMATCH; |
| 7 | 4995 } |
| 4996 else | |
| 4997 { | |
| 4998 /* Messy situation: Need to compare between two | |
| 4999 * lines. */ | |
| 5000 ccol = reg_startpos[no].col; | |
| 5001 clnum = reg_startpos[no].lnum; | |
| 5002 for (;;) | |
| 5003 { | |
| 5004 /* Since getting one line may invalidate | |
| 5005 * the other, need to make copy. Slow! */ | |
| 5006 if (regline != reg_tofree) | |
| 5007 { | |
| 5008 len = (int)STRLEN(regline); | |
| 5009 if (reg_tofree == NULL | |
| 5010 || len >= (int)reg_tofreelen) | |
| 5011 { | |
| 5012 len += 50; /* get some extra */ | |
| 5013 vim_free(reg_tofree); | |
| 5014 reg_tofree = alloc(len); | |
| 5015 if (reg_tofree == NULL) | |
| 180 | 5016 { |
| 5017 status = RA_FAIL; /* outof memory!*/ | |
| 5018 break; | |
| 5019 } | |
| 7 | 5020 reg_tofreelen = len; |
| 5021 } | |
| 5022 STRCPY(reg_tofree, regline); | |
| 5023 reginput = reg_tofree | |
| 5024 + (reginput - regline); | |
| 5025 regline = reg_tofree; | |
| 5026 } | |
| 5027 | |
| 5028 /* Get the line to compare with. */ | |
| 5029 p = reg_getline(clnum); | |
| 5030 if (clnum == reg_endpos[no].lnum) | |
| 5031 len = reg_endpos[no].col - ccol; | |
| 5032 else | |
| 5033 len = (int)STRLEN(p + ccol); | |
| 5034 | |
| 5035 if (cstrncmp(p + ccol, reginput, &len) != 0) | |
| 180 | 5036 { |
| 5037 status = RA_NOMATCH; /* doesn't match */ | |
| 5038 break; | |
| 5039 } | |
| 7 | 5040 if (clnum == reg_endpos[no].lnum) |
| 5041 break; /* match and at end! */ | |
| 481 | 5042 if (reglnum >= reg_maxline) |
| 180 | 5043 { |
| 5044 status = RA_NOMATCH; /* text too short */ | |
| 5045 break; | |
| 5046 } | |
| 7 | 5047 |
| 5048 /* Advance to next line. */ | |
| 5049 reg_nextline(); | |
| 5050 ++clnum; | |
| 5051 ccol = 0; | |
| 180 | 5052 if (got_int) |
| 5053 { | |
| 5054 status = RA_FAIL; | |
| 5055 break; | |
| 5056 } | |
| 7 | 5057 } |
| 5058 | |
| 5059 /* found a match! Note that regline may now point | |
| 5060 * to a copy of the line, that should not matter. */ | |
| 5061 } | |
| 5062 } | |
| 5063 } | |
| 5064 | |
| 5065 /* Matched the backref, skip over it. */ | |
| 5066 reginput += len; | |
| 5067 } | |
| 5068 break; | |
| 5069 | |
| 5070 #ifdef FEAT_SYN_HL | |
| 5071 case ZREF + 1: | |
| 5072 case ZREF + 2: | |
| 5073 case ZREF + 3: | |
| 5074 case ZREF + 4: | |
| 5075 case ZREF + 5: | |
| 5076 case ZREF + 6: | |
| 5077 case ZREF + 7: | |
| 5078 case ZREF + 8: | |
| 5079 case ZREF + 9: | |
| 5080 { | |
| 5081 int len; | |
| 5082 | |
| 5083 cleanup_zsubexpr(); | |
| 5084 no = op - ZREF; | |
| 5085 if (re_extmatch_in != NULL | |
| 5086 && re_extmatch_in->matches[no] != NULL) | |
| 5087 { | |
| 5088 len = (int)STRLEN(re_extmatch_in->matches[no]); | |
| 5089 if (cstrncmp(re_extmatch_in->matches[no], | |
| 5090 reginput, &len) != 0) | |
| 180 | 5091 status = RA_NOMATCH; |
| 5092 else | |
| 5093 reginput += len; | |
| 7 | 5094 } |
| 5095 else | |
| 5096 { | |
| 5097 /* Backref was not set: Match an empty string. */ | |
| 5098 } | |
| 5099 } | |
| 5100 break; | |
| 5101 #endif | |
| 5102 | |
| 5103 case BRANCH: | |
| 5104 { | |
| 5105 if (OP(next) != BRANCH) /* No choice. */ | |
| 5106 next = OPERAND(scan); /* Avoid recursion. */ | |
| 5107 else | |
| 5108 { | |
| 270 | 5109 rp = regstack_push(RS_BRANCH, scan); |
| 180 | 5110 if (rp == NULL) |
| 5111 status = RA_FAIL; | |
| 5112 else | |
| 5113 status = RA_BREAK; /* rest is below */ | |
| 7 | 5114 } |
| 5115 } | |
| 5116 break; | |
| 5117 | |
| 5118 case BRACE_LIMITS: | |
| 5119 { | |
| 5120 if (OP(next) == BRACE_SIMPLE) | |
| 5121 { | |
| 5122 bl_minval = OPERAND_MIN(scan); | |
| 5123 bl_maxval = OPERAND_MAX(scan); | |
| 5124 } | |
| 5125 else if (OP(next) >= BRACE_COMPLEX | |
| 5126 && OP(next) < BRACE_COMPLEX + 10) | |
| 5127 { | |
| 5128 no = OP(next) - BRACE_COMPLEX; | |
| 5129 brace_min[no] = OPERAND_MIN(scan); | |
| 5130 brace_max[no] = OPERAND_MAX(scan); | |
| 5131 brace_count[no] = 0; | |
| 5132 } | |
| 5133 else | |
| 5134 { | |
| 5135 EMSG(_(e_internal)); /* Shouldn't happen */ | |
| 180 | 5136 status = RA_FAIL; |
| 7 | 5137 } |
| 5138 } | |
| 5139 break; | |
| 5140 | |
| 5141 case BRACE_COMPLEX + 0: | |
| 5142 case BRACE_COMPLEX + 1: | |
| 5143 case BRACE_COMPLEX + 2: | |
| 5144 case BRACE_COMPLEX + 3: | |
| 5145 case BRACE_COMPLEX + 4: | |
| 5146 case BRACE_COMPLEX + 5: | |
| 5147 case BRACE_COMPLEX + 6: | |
| 5148 case BRACE_COMPLEX + 7: | |
| 5149 case BRACE_COMPLEX + 8: | |
| 5150 case BRACE_COMPLEX + 9: | |
| 5151 { | |
| 5152 no = op - BRACE_COMPLEX; | |
| 5153 ++brace_count[no]; | |
| 5154 | |
| 5155 /* If not matched enough times yet, try one more */ | |
| 5156 if (brace_count[no] <= (brace_min[no] <= brace_max[no] | |
| 180 | 5157 ? brace_min[no] : brace_max[no])) |
| 7 | 5158 { |
| 270 | 5159 rp = regstack_push(RS_BRCPLX_MORE, scan); |
| 180 | 5160 if (rp == NULL) |
| 5161 status = RA_FAIL; | |
| 5162 else | |
| 5163 { | |
| 5164 rp->rs_no = no; | |
| 233 | 5165 reg_save(&rp->rs_un.regsave, &backpos); |
| 180 | 5166 next = OPERAND(scan); |
| 5167 /* We continue and handle the result when done. */ | |
| 5168 } | |
| 5169 break; | |
| 7 | 5170 } |
| 5171 | |
| 5172 /* If matched enough times, may try matching some more */ | |
| 5173 if (brace_min[no] <= brace_max[no]) | |
| 5174 { | |
| 5175 /* Range is the normal way around, use longest match */ | |
| 5176 if (brace_count[no] <= brace_max[no]) | |
| 5177 { | |
| 270 | 5178 rp = regstack_push(RS_BRCPLX_LONG, scan); |
| 180 | 5179 if (rp == NULL) |
| 5180 status = RA_FAIL; | |
| 5181 else | |
| 5182 { | |
| 5183 rp->rs_no = no; | |
| 233 | 5184 reg_save(&rp->rs_un.regsave, &backpos); |
| 180 | 5185 next = OPERAND(scan); |
| 5186 /* We continue and handle the result when done. */ | |
| 5187 } | |
| 7 | 5188 } |
| 5189 } | |
| 5190 else | |
| 5191 { | |
| 5192 /* Range is backwards, use shortest match first */ | |
| 5193 if (brace_count[no] <= brace_min[no]) | |
| 5194 { | |
| 270 | 5195 rp = regstack_push(RS_BRCPLX_SHORT, scan); |
| 180 | 5196 if (rp == NULL) |
| 5197 status = RA_FAIL; | |
| 5198 else | |
| 5199 { | |
| 233 | 5200 reg_save(&rp->rs_un.regsave, &backpos); |
| 180 | 5201 /* We continue and handle the result when done. */ |
| 5202 } | |
| 7 | 5203 } |
| 5204 } | |
| 5205 } | |
| 5206 break; | |
| 5207 | |
| 5208 case BRACE_SIMPLE: | |
| 5209 case STAR: | |
| 5210 case PLUS: | |
| 5211 { | |
| 180 | 5212 regstar_T rst; |
| 7 | 5213 |
| 5214 /* | |
| 5215 * Lookahead to avoid useless match attempts when we know | |
| 5216 * what character comes next. | |
| 5217 */ | |
| 5218 if (OP(next) == EXACTLY) | |
| 5219 { | |
| 180 | 5220 rst.nextb = *OPERAND(next); |
| 7 | 5221 if (ireg_ic) |
| 5222 { | |
| 1347 | 5223 if (MB_ISUPPER(rst.nextb)) |
| 5224 rst.nextb_ic = MB_TOLOWER(rst.nextb); | |
| 7 | 5225 else |
| 1347 | 5226 rst.nextb_ic = MB_TOUPPER(rst.nextb); |
| 7 | 5227 } |
| 5228 else | |
| 180 | 5229 rst.nextb_ic = rst.nextb; |
| 7 | 5230 } |
| 5231 else | |
| 5232 { | |
| 180 | 5233 rst.nextb = NUL; |
| 5234 rst.nextb_ic = NUL; | |
| 7 | 5235 } |
| 5236 if (op != BRACE_SIMPLE) | |
| 5237 { | |
| 180 | 5238 rst.minval = (op == STAR) ? 0 : 1; |
| 5239 rst.maxval = MAX_LIMIT; | |
| 7 | 5240 } |
| 5241 else | |
| 5242 { | |
| 180 | 5243 rst.minval = bl_minval; |
| 5244 rst.maxval = bl_maxval; | |
| 7 | 5245 } |
| 5246 | |
| 5247 /* | |
| 5248 * When maxval > minval, try matching as much as possible, up | |
| 5249 * to maxval. When maxval < minval, try matching at least the | |
| 5250 * minimal number (since the range is backwards, that's also | |
| 5251 * maxval!). | |
| 5252 */ | |
| 180 | 5253 rst.count = regrepeat(OPERAND(scan), rst.maxval); |
| 7 | 5254 if (got_int) |
| 180 | 5255 { |
| 5256 status = RA_FAIL; | |
| 5257 break; | |
| 5258 } | |
| 5259 if (rst.minval <= rst.maxval | |
| 5260 ? rst.count >= rst.minval : rst.count >= rst.maxval) | |
| 7 | 5261 { |
| 180 | 5262 /* It could match. Prepare for trying to match what |
| 5263 * follows. The code is below. Parameters are stored in | |
| 5264 * a regstar_T on the regstack. */ | |
| 212 | 5265 if ((long)((unsigned)regstack.ga_len >> 10) >= p_mmp) |
| 189 | 5266 { |
| 5267 EMSG(_(e_maxmempat)); | |
| 5268 status = RA_FAIL; | |
| 5269 } | |
| 5270 else if (ga_grow(®stack, sizeof(regstar_T)) == FAIL) | |
| 180 | 5271 status = RA_FAIL; |
| 5272 else | |
| 7 | 5273 { |
| 180 | 5274 regstack.ga_len += sizeof(regstar_T); |
| 270 | 5275 rp = regstack_push(rst.minval <= rst.maxval |
| 233 | 5276 ? RS_STAR_LONG : RS_STAR_SHORT, scan); |
| 180 | 5277 if (rp == NULL) |
| 5278 status = RA_FAIL; | |
| 5279 else | |
| 7 | 5280 { |
| 180 | 5281 *(((regstar_T *)rp) - 1) = rst; |
| 5282 status = RA_BREAK; /* skip the restore bits */ | |
| 7 | 5283 } |
| 5284 } | |
| 5285 } | |
| 5286 else | |
| 180 | 5287 status = RA_NOMATCH; |
| 5288 | |
| 7 | 5289 } |
| 180 | 5290 break; |
| 7 | 5291 |
| 5292 case NOMATCH: | |
| 5293 case MATCH: | |
| 5294 case SUBPAT: | |
| 270 | 5295 rp = regstack_push(RS_NOMATCH, scan); |
| 180 | 5296 if (rp == NULL) |
| 5297 status = RA_FAIL; | |
| 5298 else | |
| 7 | 5299 { |
| 180 | 5300 rp->rs_no = op; |
| 233 | 5301 reg_save(&rp->rs_un.regsave, &backpos); |
| 180 | 5302 next = OPERAND(scan); |
| 5303 /* We continue and handle the result when done. */ | |
| 7 | 5304 } |
| 5305 break; | |
| 5306 | |
| 5307 case BEHIND: | |
| 5308 case NOBEHIND: | |
| 180 | 5309 /* Need a bit of room to store extra positions. */ |
| 212 | 5310 if ((long)((unsigned)regstack.ga_len >> 10) >= p_mmp) |
| 189 | 5311 { |
| 5312 EMSG(_(e_maxmempat)); | |
| 5313 status = RA_FAIL; | |
| 5314 } | |
| 5315 else if (ga_grow(®stack, sizeof(regbehind_T)) == FAIL) | |
| 180 | 5316 status = RA_FAIL; |
| 5317 else | |
| 7 | 5318 { |
| 180 | 5319 regstack.ga_len += sizeof(regbehind_T); |
| 270 | 5320 rp = regstack_push(RS_BEHIND1, scan); |
| 180 | 5321 if (rp == NULL) |
| 5322 status = RA_FAIL; | |
| 5323 else | |
| 7 | 5324 { |
| 1579 | 5325 /* Need to save the subexpr to be able to restore them |
| 5326 * when there is a match but we don't use it. */ | |
| 5327 save_subexpr(((regbehind_T *)rp) - 1); | |
| 5328 | |
| 180 | 5329 rp->rs_no = op; |
| 233 | 5330 reg_save(&rp->rs_un.regsave, &backpos); |
| 180 | 5331 /* First try if what follows matches. If it does then we |
| 5332 * check the behind match by looping. */ | |
| 7 | 5333 } |
| 5334 } | |
| 180 | 5335 break; |
| 7 | 5336 |
| 5337 case BHPOS: | |
| 5338 if (REG_MULTI) | |
| 5339 { | |
| 5340 if (behind_pos.rs_u.pos.col != (colnr_T)(reginput - regline) | |
| 5341 || behind_pos.rs_u.pos.lnum != reglnum) | |
| 180 | 5342 status = RA_NOMATCH; |
| 7 | 5343 } |
| 5344 else if (behind_pos.rs_u.ptr != reginput) | |
| 180 | 5345 status = RA_NOMATCH; |
| 7 | 5346 break; |
| 5347 | |
| 5348 case NEWL: | |
| 1018 | 5349 if ((c != NUL || !REG_MULTI || reglnum > reg_maxline |
| 5350 || reg_line_lbr) && (c != '\n' || !reg_line_lbr)) | |
| 180 | 5351 status = RA_NOMATCH; |
| 5352 else if (reg_line_lbr) | |
| 7 | 5353 ADVANCE_REGINPUT(); |
| 5354 else | |
| 5355 reg_nextline(); | |
| 5356 break; | |
| 5357 | |
| 5358 case END: | |
| 180 | 5359 status = RA_MATCH; /* Success! */ |
| 5360 break; | |
| 7 | 5361 |
| 5362 default: | |
| 5363 EMSG(_(e_re_corr)); | |
| 5364 #ifdef DEBUG | |
| 5365 printf("Illegal op code %d\n", op); | |
| 5366 #endif | |
| 180 | 5367 status = RA_FAIL; |
| 5368 break; | |
| 7 | 5369 } |
| 5370 } | |
| 5371 | |
| 180 | 5372 /* If we can't continue sequentially, break the inner loop. */ |
| 5373 if (status != RA_CONT) | |
| 5374 break; | |
| 5375 | |
| 5376 /* Continue in inner loop, advance to next item. */ | |
| 7 | 5377 scan = next; |
| 180 | 5378 |
| 5379 } /* end of inner loop */ | |
| 7 | 5380 |
| 5381 /* | |
| 180 | 5382 * If there is something on the regstack execute the code for the state. |
| 233 | 5383 * If the state is popped then loop and use the older state. |
| 7 | 5384 */ |
| 180 | 5385 while (regstack.ga_len > 0 && status != RA_FAIL) |
| 5386 { | |
| 5387 rp = (regitem_T *)((char *)regstack.ga_data + regstack.ga_len) - 1; | |
| 5388 switch (rp->rs_state) | |
| 5389 { | |
| 5390 case RS_NOPEN: | |
| 5391 /* Result is passed on as-is, simply pop the state. */ | |
| 270 | 5392 regstack_pop(&scan); |
| 180 | 5393 break; |
| 5394 | |
| 5395 case RS_MOPEN: | |
| 5396 /* Pop the state. Restore pointers when there is no match. */ | |
| 5397 if (status == RA_NOMATCH) | |
| 5398 restore_se(&rp->rs_un.sesave, ®_startpos[rp->rs_no], | |
| 5399 ®_startp[rp->rs_no]); | |
| 270 | 5400 regstack_pop(&scan); |
| 180 | 5401 break; |
| 5402 | |
| 5403 #ifdef FEAT_SYN_HL | |
| 5404 case RS_ZOPEN: | |
| 5405 /* Pop the state. Restore pointers when there is no match. */ | |
| 5406 if (status == RA_NOMATCH) | |
| 5407 restore_se(&rp->rs_un.sesave, ®_startzpos[rp->rs_no], | |
| 5408 ®_startzp[rp->rs_no]); | |
| 270 | 5409 regstack_pop(&scan); |
| 180 | 5410 break; |
| 5411 #endif | |
| 5412 | |
| 5413 case RS_MCLOSE: | |
| 5414 /* Pop the state. Restore pointers when there is no match. */ | |
| 5415 if (status == RA_NOMATCH) | |
| 5416 restore_se(&rp->rs_un.sesave, ®_endpos[rp->rs_no], | |
| 5417 ®_endp[rp->rs_no]); | |
| 270 | 5418 regstack_pop(&scan); |
| 180 | 5419 break; |
| 5420 | |
| 5421 #ifdef FEAT_SYN_HL | |
| 5422 case RS_ZCLOSE: | |
| 5423 /* Pop the state. Restore pointers when there is no match. */ | |
| 5424 if (status == RA_NOMATCH) | |
| 5425 restore_se(&rp->rs_un.sesave, ®_endzpos[rp->rs_no], | |
| 5426 ®_endzp[rp->rs_no]); | |
| 270 | 5427 regstack_pop(&scan); |
| 180 | 5428 break; |
| 5429 #endif | |
| 5430 | |
| 5431 case RS_BRANCH: | |
| 5432 if (status == RA_MATCH) | |
| 5433 /* this branch matched, use it */ | |
| 270 | 5434 regstack_pop(&scan); |
| 180 | 5435 else |
| 5436 { | |
| 5437 if (status != RA_BREAK) | |
| 5438 { | |
| 5439 /* After a non-matching branch: try next one. */ | |
| 233 | 5440 reg_restore(&rp->rs_un.regsave, &backpos); |
| 180 | 5441 scan = rp->rs_scan; |
| 5442 } | |
| 5443 if (scan == NULL || OP(scan) != BRANCH) | |
| 5444 { | |
| 5445 /* no more branches, didn't find a match */ | |
| 5446 status = RA_NOMATCH; | |
| 270 | 5447 regstack_pop(&scan); |
| 180 | 5448 } |
| 5449 else | |
| 5450 { | |
| 5451 /* Prepare to try a branch. */ | |
| 5452 rp->rs_scan = regnext(scan); | |
| 233 | 5453 reg_save(&rp->rs_un.regsave, &backpos); |
| 180 | 5454 scan = OPERAND(scan); |
| 5455 } | |
| 5456 } | |
| 5457 break; | |
| 5458 | |
| 5459 case RS_BRCPLX_MORE: | |
| 5460 /* Pop the state. Restore pointers when there is no match. */ | |
| 5461 if (status == RA_NOMATCH) | |
| 5462 { | |
| 233 | 5463 reg_restore(&rp->rs_un.regsave, &backpos); |
| 180 | 5464 --brace_count[rp->rs_no]; /* decrement match count */ |
| 5465 } | |
| 270 | 5466 regstack_pop(&scan); |
| 180 | 5467 break; |
| 5468 | |
| 5469 case RS_BRCPLX_LONG: | |
| 5470 /* Pop the state. Restore pointers when there is no match. */ | |
| 5471 if (status == RA_NOMATCH) | |
| 5472 { | |
| 5473 /* There was no match, but we did find enough matches. */ | |
| 233 | 5474 reg_restore(&rp->rs_un.regsave, &backpos); |
| 180 | 5475 --brace_count[rp->rs_no]; |
| 5476 /* continue with the items after "\{}" */ | |
| 5477 status = RA_CONT; | |
| 5478 } | |
| 270 | 5479 regstack_pop(&scan); |
| 180 | 5480 if (status == RA_CONT) |
| 5481 scan = regnext(scan); | |
| 5482 break; | |
| 5483 | |
| 5484 case RS_BRCPLX_SHORT: | |
| 5485 /* Pop the state. Restore pointers when there is no match. */ | |
| 5486 if (status == RA_NOMATCH) | |
| 5487 /* There was no match, try to match one more item. */ | |
| 233 | 5488 reg_restore(&rp->rs_un.regsave, &backpos); |
| 270 | 5489 regstack_pop(&scan); |
| 180 | 5490 if (status == RA_NOMATCH) |
| 5491 { | |
| 5492 scan = OPERAND(scan); | |
| 5493 status = RA_CONT; | |
| 5494 } | |
| 5495 break; | |
| 5496 | |
| 5497 case RS_NOMATCH: | |
| 5498 /* Pop the state. If the operand matches for NOMATCH or | |
| 5499 * doesn't match for MATCH/SUBPAT, we fail. Otherwise backup, | |
| 5500 * except for SUBPAT, and continue with the next item. */ | |
| 5501 if (status == (rp->rs_no == NOMATCH ? RA_MATCH : RA_NOMATCH)) | |
| 5502 status = RA_NOMATCH; | |
| 5503 else | |
| 5504 { | |
| 5505 status = RA_CONT; | |
| 233 | 5506 if (rp->rs_no != SUBPAT) /* zero-width */ |
| 5507 reg_restore(&rp->rs_un.regsave, &backpos); | |
| 180 | 5508 } |
| 270 | 5509 regstack_pop(&scan); |
| 180 | 5510 if (status == RA_CONT) |
| 5511 scan = regnext(scan); | |
| 5512 break; | |
| 5513 | |
| 5514 case RS_BEHIND1: | |
| 5515 if (status == RA_NOMATCH) | |
| 5516 { | |
| 270 | 5517 regstack_pop(&scan); |
| 180 | 5518 regstack.ga_len -= sizeof(regbehind_T); |
| 5519 } | |
| 5520 else | |
| 5521 { | |
| 5522 /* The stuff after BEHIND/NOBEHIND matches. Now try if | |
| 5523 * the behind part does (not) match before the current | |
| 5524 * position in the input. This must be done at every | |
| 5525 * position in the input and checking if the match ends at | |
| 5526 * the current position. */ | |
| 5527 | |
| 5528 /* save the position after the found match for next */ | |
| 233 | 5529 reg_save(&(((regbehind_T *)rp) - 1)->save_after, &backpos); |
| 180 | 5530 |
|
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|
5531 /* Start looking for a match with operand at the current |
| 1209 | 5532 * position. Go back one character until we find the |
| 180 | 5533 * result, hitting the start of the line or the previous |
| 5534 * line (for multi-line matching). | |
| 5535 * Set behind_pos to where the match should end, BHPOS | |
| 5536 * will match it. Save the current value. */ | |
| 5537 (((regbehind_T *)rp) - 1)->save_behind = behind_pos; | |
| 5538 behind_pos = rp->rs_un.regsave; | |
| 5539 | |
| 5540 rp->rs_state = RS_BEHIND2; | |
| 5541 | |
| 233 | 5542 reg_restore(&rp->rs_un.regsave, &backpos); |
|
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|
5543 scan = OPERAND(rp->rs_scan) + 4; |
| 180 | 5544 } |
| 5545 break; | |
| 5546 | |
| 5547 case RS_BEHIND2: | |
| 5548 /* | |
| 5549 * Looping for BEHIND / NOBEHIND match. | |
| 5550 */ | |
| 5551 if (status == RA_MATCH && reg_save_equal(&behind_pos)) | |
| 5552 { | |
| 5553 /* found a match that ends where "next" started */ | |
| 5554 behind_pos = (((regbehind_T *)rp) - 1)->save_behind; | |
| 5555 if (rp->rs_no == BEHIND) | |
| 233 | 5556 reg_restore(&(((regbehind_T *)rp) - 1)->save_after, |
| 5557 &backpos); | |
| 180 | 5558 else |
| 1579 | 5559 { |
| 5560 /* But we didn't want a match. Need to restore the | |
| 5561 * subexpr, because what follows matched, so they have | |
| 5562 * been set. */ | |
| 180 | 5563 status = RA_NOMATCH; |
| 1579 | 5564 restore_subexpr(((regbehind_T *)rp) - 1); |
| 5565 } | |
| 270 | 5566 regstack_pop(&scan); |
| 180 | 5567 regstack.ga_len -= sizeof(regbehind_T); |
| 5568 } | |
| 5569 else | |
| 5570 { | |
|
4579
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|
5571 long limit; |
|
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|
5572 |
| 1579 | 5573 /* No match or a match that doesn't end where we want it: Go |
| 5574 * back one character. May go to previous line once. */ | |
| 180 | 5575 no = OK; |
|
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|
5576 limit = OPERAND_MIN(rp->rs_scan); |
| 180 | 5577 if (REG_MULTI) |
| 5578 { | |
|
4682
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|
5579 if (limit > 0 |
|
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diff
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|
5580 && ((rp->rs_un.regsave.rs_u.pos.lnum |
|
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diff
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|
5581 < behind_pos.rs_u.pos.lnum |
|
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|
5582 ? (colnr_T)STRLEN(regline) |
|
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diff
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|
5583 : behind_pos.rs_u.pos.col) |
|
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diff
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|
5584 - rp->rs_un.regsave.rs_u.pos.col >= limit)) |
|
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|
5585 no = FAIL; |
|
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|
5586 else if (rp->rs_un.regsave.rs_u.pos.col == 0) |
| 180 | 5587 { |
| 5588 if (rp->rs_un.regsave.rs_u.pos.lnum | |
| 5589 < behind_pos.rs_u.pos.lnum | |
| 5590 || reg_getline( | |
| 5591 --rp->rs_un.regsave.rs_u.pos.lnum) | |
| 5592 == NULL) | |
| 5593 no = FAIL; | |
| 5594 else | |
| 5595 { | |
| 233 | 5596 reg_restore(&rp->rs_un.regsave, &backpos); |
| 180 | 5597 rp->rs_un.regsave.rs_u.pos.col = |
| 5598 (colnr_T)STRLEN(regline); | |
| 5599 } | |
| 5600 } | |
| 5601 else | |
|
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|
5602 { |
| 4176 | 5603 #ifdef FEAT_MBYTE |
|
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|
5604 if (has_mbyte) |
|
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|
5605 rp->rs_un.regsave.rs_u.pos.col -= |
|
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|
5606 (*mb_head_off)(regline, regline |
| 4176 | 5607 + rp->rs_un.regsave.rs_u.pos.col - 1) + 1; |
|
4579
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|
5608 else |
|
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|
5609 #endif |
|
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|
5610 --rp->rs_un.regsave.rs_u.pos.col; |
|
7a2be4a39423
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|
5611 } |
| 180 | 5612 } |
| 5613 else | |
| 5614 { | |
| 5615 if (rp->rs_un.regsave.rs_u.ptr == regline) | |
| 5616 no = FAIL; | |
| 5617 else | |
|
4579
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|
5618 { |
|
7a2be4a39423
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4505
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|
5619 mb_ptr_back(regline, rp->rs_un.regsave.rs_u.ptr); |
|
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|
5620 if (limit > 0 && (long)(behind_pos.rs_u.ptr |
|
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|
5621 - rp->rs_un.regsave.rs_u.ptr) > limit) |
|
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|
5622 no = FAIL; |
|
7a2be4a39423
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diff
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|
5623 } |
| 180 | 5624 } |
| 5625 if (no == OK) | |
| 5626 { | |
| 5627 /* Advanced, prepare for finding match again. */ | |
| 233 | 5628 reg_restore(&rp->rs_un.regsave, &backpos); |
|
4579
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diff
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|
5629 scan = OPERAND(rp->rs_scan) + 4; |
| 1579 | 5630 if (status == RA_MATCH) |
| 5631 { | |
| 5632 /* We did match, so subexpr may have been changed, | |
| 5633 * need to restore them for the next try. */ | |
| 5634 status = RA_NOMATCH; | |
| 5635 restore_subexpr(((regbehind_T *)rp) - 1); | |
| 5636 } | |
| 180 | 5637 } |
| 5638 else | |
| 5639 { | |
| 5640 /* Can't advance. For NOBEHIND that's a match. */ | |
| 5641 behind_pos = (((regbehind_T *)rp) - 1)->save_behind; | |
| 5642 if (rp->rs_no == NOBEHIND) | |
| 5643 { | |
| 233 | 5644 reg_restore(&(((regbehind_T *)rp) - 1)->save_after, |
| 5645 &backpos); | |
| 180 | 5646 status = RA_MATCH; |
| 5647 } | |
| 5648 else | |
| 1579 | 5649 { |
| 5650 /* We do want a proper match. Need to restore the | |
| 5651 * subexpr if we had a match, because they may have | |
| 5652 * been set. */ | |
| 5653 if (status == RA_MATCH) | |
| 5654 { | |
| 5655 status = RA_NOMATCH; | |
| 5656 restore_subexpr(((regbehind_T *)rp) - 1); | |
| 5657 } | |
| 5658 } | |
| 270 | 5659 regstack_pop(&scan); |
| 180 | 5660 regstack.ga_len -= sizeof(regbehind_T); |
| 5661 } | |
| 5662 } | |
| 5663 break; | |
| 5664 | |
| 5665 case RS_STAR_LONG: | |
| 5666 case RS_STAR_SHORT: | |
| 5667 { | |
| 5668 regstar_T *rst = ((regstar_T *)rp) - 1; | |
| 5669 | |
| 5670 if (status == RA_MATCH) | |
| 5671 { | |
| 270 | 5672 regstack_pop(&scan); |
| 180 | 5673 regstack.ga_len -= sizeof(regstar_T); |
| 5674 break; | |
| 5675 } | |
| 5676 | |
| 5677 /* Tried once already, restore input pointers. */ | |
| 5678 if (status != RA_BREAK) | |
| 233 | 5679 reg_restore(&rp->rs_un.regsave, &backpos); |
| 180 | 5680 |
| 5681 /* Repeat until we found a position where it could match. */ | |
| 5682 for (;;) | |
| 5683 { | |
| 5684 if (status != RA_BREAK) | |
| 5685 { | |
| 5686 /* Tried first position already, advance. */ | |
| 5687 if (rp->rs_state == RS_STAR_LONG) | |
| 5688 { | |
| 685 | 5689 /* Trying for longest match, but couldn't or |
| 5690 * didn't match -- back up one char. */ | |
| 180 | 5691 if (--rst->count < rst->minval) |
| 5692 break; | |
| 5693 if (reginput == regline) | |
| 5694 { | |
| 5695 /* backup to last char of previous line */ | |
| 5696 --reglnum; | |
| 5697 regline = reg_getline(reglnum); | |
| 5698 /* Just in case regrepeat() didn't count | |
| 5699 * right. */ | |
| 5700 if (regline == NULL) | |
| 5701 break; | |
| 5702 reginput = regline + STRLEN(regline); | |
| 5703 fast_breakcheck(); | |
| 5704 } | |
| 5705 else | |
| 5706 mb_ptr_back(regline, reginput); | |
| 5707 } | |
| 5708 else | |
| 5709 { | |
| 5710 /* Range is backwards, use shortest match first. | |
| 5711 * Careful: maxval and minval are exchanged! | |
| 5712 * Couldn't or didn't match: try advancing one | |
| 5713 * char. */ | |
| 5714 if (rst->count == rst->minval | |
| 5715 || regrepeat(OPERAND(rp->rs_scan), 1L) == 0) | |
| 5716 break; | |
| 5717 ++rst->count; | |
| 5718 } | |
| 5719 if (got_int) | |
| 5720 break; | |
| 5721 } | |
| 5722 else | |
| 5723 status = RA_NOMATCH; | |
| 5724 | |
| 5725 /* If it could match, try it. */ | |
| 5726 if (rst->nextb == NUL || *reginput == rst->nextb | |
| 5727 || *reginput == rst->nextb_ic) | |
| 5728 { | |
| 233 | 5729 reg_save(&rp->rs_un.regsave, &backpos); |
| 180 | 5730 scan = regnext(rp->rs_scan); |
| 5731 status = RA_CONT; | |
| 5732 break; | |
| 5733 } | |
| 5734 } | |
| 5735 if (status != RA_CONT) | |
| 5736 { | |
| 5737 /* Failed. */ | |
| 270 | 5738 regstack_pop(&scan); |
| 180 | 5739 regstack.ga_len -= sizeof(regstar_T); |
| 5740 status = RA_NOMATCH; | |
| 5741 } | |
| 5742 } | |
| 5743 break; | |
| 5744 } | |
| 5745 | |
| 685 | 5746 /* If we want to continue the inner loop or didn't pop a state |
| 5747 * continue matching loop */ | |
| 180 | 5748 if (status == RA_CONT || rp == (regitem_T *) |
| 5749 ((char *)regstack.ga_data + regstack.ga_len) - 1) | |
| 5750 break; | |
| 5751 } | |
| 5752 | |
| 189 | 5753 /* May need to continue with the inner loop, starting at "scan". */ |
| 180 | 5754 if (status == RA_CONT) |
| 5755 continue; | |
| 5756 | |
| 5757 /* | |
| 5758 * If the regstack is empty or something failed we are done. | |
| 5759 */ | |
| 5760 if (regstack.ga_len == 0 || status == RA_FAIL) | |
| 5761 { | |
| 5762 if (scan == NULL) | |
| 5763 { | |
| 5764 /* | |
| 5765 * We get here only if there's trouble -- normally "case END" is | |
| 5766 * the terminating point. | |
| 5767 */ | |
| 5768 EMSG(_(e_re_corr)); | |
| 7 | 5769 #ifdef DEBUG |
| 180 | 5770 printf("Premature EOL\n"); |
| 7 | 5771 #endif |
| 180 | 5772 } |
| 189 | 5773 if (status == RA_FAIL) |
| 5774 got_int = TRUE; | |
| 180 | 5775 return (status == RA_MATCH); |
| 5776 } | |
| 5777 | |
| 5778 } /* End of loop until the regstack is empty. */ | |
| 5779 | |
| 5780 /* NOTREACHED */ | |
| 5781 } | |
| 5782 | |
| 5783 /* | |
| 5784 * Push an item onto the regstack. | |
| 5785 * Returns pointer to new item. Returns NULL when out of memory. | |
| 5786 */ | |
| 5787 static regitem_T * | |
| 270 | 5788 regstack_push(state, scan) |
| 180 | 5789 regstate_T state; |
| 5790 char_u *scan; | |
| 5791 { | |
| 5792 regitem_T *rp; | |
| 5793 | |
| 270 | 5794 if ((long)((unsigned)regstack.ga_len >> 10) >= p_mmp) |
| 189 | 5795 { |
| 5796 EMSG(_(e_maxmempat)); | |
| 5797 return NULL; | |
| 5798 } | |
| 270 | 5799 if (ga_grow(®stack, sizeof(regitem_T)) == FAIL) |
| 180 | 5800 return NULL; |
| 5801 | |
| 270 | 5802 rp = (regitem_T *)((char *)regstack.ga_data + regstack.ga_len); |
| 180 | 5803 rp->rs_state = state; |
| 5804 rp->rs_scan = scan; | |
| 5805 | |
| 270 | 5806 regstack.ga_len += sizeof(regitem_T); |
| 180 | 5807 return rp; |
| 5808 } | |
| 5809 | |
| 5810 /* | |
| 5811 * Pop an item from the regstack. | |
| 5812 */ | |
| 5813 static void | |
| 270 | 5814 regstack_pop(scan) |
| 180 | 5815 char_u **scan; |
| 5816 { | |
| 5817 regitem_T *rp; | |
| 5818 | |
| 270 | 5819 rp = (regitem_T *)((char *)regstack.ga_data + regstack.ga_len) - 1; |
| 180 | 5820 *scan = rp->rs_scan; |
| 5821 | |
| 270 | 5822 regstack.ga_len -= sizeof(regitem_T); |
| 7 | 5823 } |
| 5824 | |
| 5825 /* | |
| 5826 * regrepeat - repeatedly match something simple, return how many. | |
| 5827 * Advances reginput (and reglnum) to just after the matched chars. | |
| 5828 */ | |
| 5829 static int | |
| 5830 regrepeat(p, maxcount) | |
| 5831 char_u *p; | |
| 5832 long maxcount; /* maximum number of matches allowed */ | |
| 5833 { | |
| 5834 long count = 0; | |
| 5835 char_u *scan; | |
| 5836 char_u *opnd; | |
| 5837 int mask; | |
| 5838 int testval = 0; | |
| 5839 | |
| 5840 scan = reginput; /* Make local copy of reginput for speed. */ | |
| 5841 opnd = OPERAND(p); | |
| 5842 switch (OP(p)) | |
| 5843 { | |
| 5844 case ANY: | |
| 5845 case ANY + ADD_NL: | |
| 5846 while (count < maxcount) | |
| 5847 { | |
| 5848 /* Matching anything means we continue until end-of-line (or | |
| 5849 * end-of-file for ANY + ADD_NL), only limited by maxcount. */ | |
| 5850 while (*scan != NUL && count < maxcount) | |
| 5851 { | |
| 5852 ++count; | |
| 39 | 5853 mb_ptr_adv(scan); |
| 7 | 5854 } |
| 1018 | 5855 if (!REG_MULTI || !WITH_NL(OP(p)) || reglnum > reg_maxline |
| 5856 || reg_line_lbr || count == maxcount) | |
| 7 | 5857 break; |
| 5858 ++count; /* count the line-break */ | |
| 5859 reg_nextline(); | |
| 5860 scan = reginput; | |
| 5861 if (got_int) | |
| 5862 break; | |
| 5863 } | |
| 5864 break; | |
| 5865 | |
| 5866 case IDENT: | |
| 5867 case IDENT + ADD_NL: | |
| 5868 testval = TRUE; | |
| 5869 /*FALLTHROUGH*/ | |
| 5870 case SIDENT: | |
| 5871 case SIDENT + ADD_NL: | |
| 5872 while (count < maxcount) | |
| 5873 { | |
| 4466 | 5874 if (vim_isIDc(PTR2CHAR(scan)) && (testval || !VIM_ISDIGIT(*scan))) |
| 7 | 5875 { |
| 39 | 5876 mb_ptr_adv(scan); |
| 7 | 5877 } |
| 5878 else if (*scan == NUL) | |
| 5879 { | |
| 1018 | 5880 if (!REG_MULTI || !WITH_NL(OP(p)) || reglnum > reg_maxline |
| 5881 || reg_line_lbr) | |
| 7 | 5882 break; |
| 5883 reg_nextline(); | |
| 5884 scan = reginput; | |
| 5885 if (got_int) | |
| 5886 break; | |
| 5887 } | |
| 5888 else if (reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) | |
| 5889 ++scan; | |
| 5890 else | |
| 5891 break; | |
| 5892 ++count; | |
| 5893 } | |
| 5894 break; | |
| 5895 | |
| 5896 case KWORD: | |
| 5897 case KWORD + ADD_NL: | |
| 5898 testval = TRUE; | |
| 5899 /*FALLTHROUGH*/ | |
| 5900 case SKWORD: | |
| 5901 case SKWORD + ADD_NL: | |
| 5902 while (count < maxcount) | |
| 5903 { | |
| 4069 | 5904 if (vim_iswordp_buf(scan, reg_buf) |
| 5905 && (testval || !VIM_ISDIGIT(*scan))) | |
| 7 | 5906 { |
| 39 | 5907 mb_ptr_adv(scan); |
| 7 | 5908 } |
| 5909 else if (*scan == NUL) | |
| 5910 { | |
| 1018 | 5911 if (!REG_MULTI || !WITH_NL(OP(p)) || reglnum > reg_maxline |
| 5912 || reg_line_lbr) | |
| 7 | 5913 break; |
| 5914 reg_nextline(); | |
| 5915 scan = reginput; | |
| 5916 if (got_int) | |
| 5917 break; | |
| 5918 } | |
| 5919 else if (reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) | |
| 5920 ++scan; | |
| 5921 else | |
| 5922 break; | |
| 5923 ++count; | |
| 5924 } | |
| 5925 break; | |
| 5926 | |
| 5927 case FNAME: | |
| 5928 case FNAME + ADD_NL: | |
| 5929 testval = TRUE; | |
| 5930 /*FALLTHROUGH*/ | |
| 5931 case SFNAME: | |
| 5932 case SFNAME + ADD_NL: | |
| 5933 while (count < maxcount) | |
| 5934 { | |
| 4466 | 5935 if (vim_isfilec(PTR2CHAR(scan)) && (testval || !VIM_ISDIGIT(*scan))) |
| 7 | 5936 { |
| 39 | 5937 mb_ptr_adv(scan); |
| 7 | 5938 } |
| 5939 else if (*scan == NUL) | |
| 5940 { | |
| 1018 | 5941 if (!REG_MULTI || !WITH_NL(OP(p)) || reglnum > reg_maxline |
| 5942 || reg_line_lbr) | |
| 7 | 5943 break; |
| 5944 reg_nextline(); | |
| 5945 scan = reginput; | |
| 5946 if (got_int) | |
| 5947 break; | |
| 5948 } | |
| 5949 else if (reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) | |
| 5950 ++scan; | |
| 5951 else | |
| 5952 break; | |
| 5953 ++count; | |
| 5954 } | |
| 5955 break; | |
| 5956 | |
| 5957 case PRINT: | |
| 5958 case PRINT + ADD_NL: | |
| 5959 testval = TRUE; | |
| 5960 /*FALLTHROUGH*/ | |
| 5961 case SPRINT: | |
| 5962 case SPRINT + ADD_NL: | |
| 5963 while (count < maxcount) | |
| 5964 { | |
| 5965 if (*scan == NUL) | |
| 5966 { | |
| 1018 | 5967 if (!REG_MULTI || !WITH_NL(OP(p)) || reglnum > reg_maxline |
| 5968 || reg_line_lbr) | |
| 7 | 5969 break; |
| 5970 reg_nextline(); | |
| 5971 scan = reginput; | |
| 5972 if (got_int) | |
| 5973 break; | |
| 5974 } | |
| 5975 else if (ptr2cells(scan) == 1 && (testval || !VIM_ISDIGIT(*scan))) | |
| 5976 { | |
| 39 | 5977 mb_ptr_adv(scan); |
| 7 | 5978 } |
| 5979 else if (reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) | |
| 5980 ++scan; | |
| 5981 else | |
| 5982 break; | |
| 5983 ++count; | |
| 5984 } | |
| 5985 break; | |
| 5986 | |
| 5987 case WHITE: | |
| 5988 case WHITE + ADD_NL: | |
| 5989 testval = mask = RI_WHITE; | |
| 5990 do_class: | |
| 5991 while (count < maxcount) | |
| 5992 { | |
| 5993 #ifdef FEAT_MBYTE | |
| 5994 int l; | |
| 5995 #endif | |
| 5996 if (*scan == NUL) | |
| 5997 { | |
| 1018 | 5998 if (!REG_MULTI || !WITH_NL(OP(p)) || reglnum > reg_maxline |
| 5999 || reg_line_lbr) | |
| 7 | 6000 break; |
| 6001 reg_nextline(); | |
| 6002 scan = reginput; | |
| 6003 if (got_int) | |
| 6004 break; | |
| 6005 } | |
| 6006 #ifdef FEAT_MBYTE | |
| 474 | 6007 else if (has_mbyte && (l = (*mb_ptr2len)(scan)) > 1) |
| 7 | 6008 { |
| 6009 if (testval != 0) | |
| 6010 break; | |
| 6011 scan += l; | |
| 6012 } | |
| 6013 #endif | |
| 6014 else if ((class_tab[*scan] & mask) == testval) | |
| 6015 ++scan; | |
| 6016 else if (reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) | |
| 6017 ++scan; | |
| 6018 else | |
| 6019 break; | |
| 6020 ++count; | |
| 6021 } | |
| 6022 break; | |
| 6023 | |
| 6024 case NWHITE: | |
| 6025 case NWHITE + ADD_NL: | |
| 6026 mask = RI_WHITE; | |
| 6027 goto do_class; | |
| 6028 case DIGIT: | |
| 6029 case DIGIT + ADD_NL: | |
| 6030 testval = mask = RI_DIGIT; | |
| 6031 goto do_class; | |
| 6032 case NDIGIT: | |
| 6033 case NDIGIT + ADD_NL: | |
| 6034 mask = RI_DIGIT; | |
| 6035 goto do_class; | |
| 6036 case HEX: | |
| 6037 case HEX + ADD_NL: | |
| 6038 testval = mask = RI_HEX; | |
| 6039 goto do_class; | |
| 6040 case NHEX: | |
| 6041 case NHEX + ADD_NL: | |
| 6042 mask = RI_HEX; | |
| 6043 goto do_class; | |
| 6044 case OCTAL: | |
| 6045 case OCTAL + ADD_NL: | |
| 6046 testval = mask = RI_OCTAL; | |
| 6047 goto do_class; | |
| 6048 case NOCTAL: | |
| 6049 case NOCTAL + ADD_NL: | |
| 6050 mask = RI_OCTAL; | |
| 6051 goto do_class; | |
| 6052 case WORD: | |
| 6053 case WORD + ADD_NL: | |
| 6054 testval = mask = RI_WORD; | |
| 6055 goto do_class; | |
| 6056 case NWORD: | |
| 6057 case NWORD + ADD_NL: | |
| 6058 mask = RI_WORD; | |
| 6059 goto do_class; | |
| 6060 case HEAD: | |
| 6061 case HEAD + ADD_NL: | |
| 6062 testval = mask = RI_HEAD; | |
| 6063 goto do_class; | |
| 6064 case NHEAD: | |
| 6065 case NHEAD + ADD_NL: | |
| 6066 mask = RI_HEAD; | |
| 6067 goto do_class; | |
| 6068 case ALPHA: | |
| 6069 case ALPHA + ADD_NL: | |
| 6070 testval = mask = RI_ALPHA; | |
| 6071 goto do_class; | |
| 6072 case NALPHA: | |
| 6073 case NALPHA + ADD_NL: | |
| 6074 mask = RI_ALPHA; | |
| 6075 goto do_class; | |
| 6076 case LOWER: | |
| 6077 case LOWER + ADD_NL: | |
| 6078 testval = mask = RI_LOWER; | |
| 6079 goto do_class; | |
| 6080 case NLOWER: | |
| 6081 case NLOWER + ADD_NL: | |
| 6082 mask = RI_LOWER; | |
| 6083 goto do_class; | |
| 6084 case UPPER: | |
| 6085 case UPPER + ADD_NL: | |
| 6086 testval = mask = RI_UPPER; | |
| 6087 goto do_class; | |
| 6088 case NUPPER: | |
| 6089 case NUPPER + ADD_NL: | |
| 6090 mask = RI_UPPER; | |
| 6091 goto do_class; | |
| 6092 | |
| 6093 case EXACTLY: | |
| 6094 { | |
| 6095 int cu, cl; | |
| 6096 | |
| 6097 /* This doesn't do a multi-byte character, because a MULTIBYTECODE | |
| 1347 | 6098 * would have been used for it. It does handle single-byte |
| 6099 * characters, such as latin1. */ | |
| 7 | 6100 if (ireg_ic) |
| 6101 { | |
| 1347 | 6102 cu = MB_TOUPPER(*opnd); |
| 6103 cl = MB_TOLOWER(*opnd); | |
| 7 | 6104 while (count < maxcount && (*scan == cu || *scan == cl)) |
| 6105 { | |
| 6106 count++; | |
| 6107 scan++; | |
| 6108 } | |
| 6109 } | |
| 6110 else | |
| 6111 { | |
| 6112 cu = *opnd; | |
| 6113 while (count < maxcount && *scan == cu) | |
| 6114 { | |
| 6115 count++; | |
| 6116 scan++; | |
| 6117 } | |
| 6118 } | |
| 6119 break; | |
| 6120 } | |
| 6121 | |
| 6122 #ifdef FEAT_MBYTE | |
| 6123 case MULTIBYTECODE: | |
| 6124 { | |
| 6125 int i, len, cf = 0; | |
| 6126 | |
| 6127 /* Safety check (just in case 'encoding' was changed since | |
| 6128 * compiling the program). */ | |
| 474 | 6129 if ((len = (*mb_ptr2len)(opnd)) > 1) |
| 7 | 6130 { |
| 6131 if (ireg_ic && enc_utf8) | |
| 6132 cf = utf_fold(utf_ptr2char(opnd)); | |
| 6133 while (count < maxcount) | |
| 6134 { | |
| 6135 for (i = 0; i < len; ++i) | |
| 6136 if (opnd[i] != scan[i]) | |
| 6137 break; | |
| 6138 if (i < len && (!ireg_ic || !enc_utf8 | |
| 6139 || utf_fold(utf_ptr2char(scan)) != cf)) | |
| 6140 break; | |
| 6141 scan += len; | |
| 6142 ++count; | |
| 6143 } | |
| 6144 } | |
| 6145 } | |
| 6146 break; | |
| 6147 #endif | |
| 6148 | |
| 6149 case ANYOF: | |
| 6150 case ANYOF + ADD_NL: | |
| 6151 testval = TRUE; | |
| 6152 /*FALLTHROUGH*/ | |
| 6153 | |
| 6154 case ANYBUT: | |
| 6155 case ANYBUT + ADD_NL: | |
| 6156 while (count < maxcount) | |
| 6157 { | |
| 6158 #ifdef FEAT_MBYTE | |
| 6159 int len; | |
| 6160 #endif | |
| 6161 if (*scan == NUL) | |
| 6162 { | |
| 1018 | 6163 if (!REG_MULTI || !WITH_NL(OP(p)) || reglnum > reg_maxline |
| 6164 || reg_line_lbr) | |
| 7 | 6165 break; |
| 6166 reg_nextline(); | |
| 6167 scan = reginput; | |
| 6168 if (got_int) | |
| 6169 break; | |
| 6170 } | |
| 6171 else if (reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) | |
| 6172 ++scan; | |
| 6173 #ifdef FEAT_MBYTE | |
| 474 | 6174 else if (has_mbyte && (len = (*mb_ptr2len)(scan)) > 1) |
| 7 | 6175 { |
| 6176 if ((cstrchr(opnd, (*mb_ptr2char)(scan)) == NULL) == testval) | |
| 6177 break; | |
| 6178 scan += len; | |
| 6179 } | |
| 6180 #endif | |
| 6181 else | |
| 6182 { | |
| 6183 if ((cstrchr(opnd, *scan) == NULL) == testval) | |
| 6184 break; | |
| 6185 ++scan; | |
| 6186 } | |
| 6187 ++count; | |
| 6188 } | |
| 6189 break; | |
| 6190 | |
| 6191 case NEWL: | |
| 6192 while (count < maxcount | |
| 1018 | 6193 && ((*scan == NUL && reglnum <= reg_maxline && !reg_line_lbr |
| 6194 && REG_MULTI) || (*scan == '\n' && reg_line_lbr))) | |
| 7 | 6195 { |
| 6196 count++; | |
| 6197 if (reg_line_lbr) | |
| 6198 ADVANCE_REGINPUT(); | |
| 6199 else | |
| 6200 reg_nextline(); | |
| 6201 scan = reginput; | |
| 6202 if (got_int) | |
| 6203 break; | |
| 6204 } | |
| 6205 break; | |
| 6206 | |
| 6207 default: /* Oh dear. Called inappropriately. */ | |
| 6208 EMSG(_(e_re_corr)); | |
| 6209 #ifdef DEBUG | |
| 6210 printf("Called regrepeat with op code %d\n", OP(p)); | |
| 6211 #endif | |
| 6212 break; | |
| 6213 } | |
| 6214 | |
| 6215 reginput = scan; | |
| 6216 | |
| 6217 return (int)count; | |
| 6218 } | |
| 6219 | |
| 6220 /* | |
| 6221 * regnext - dig the "next" pointer out of a node | |
| 2010 | 6222 * Returns NULL when calculating size, when there is no next item and when |
| 6223 * there is an error. | |
| 7 | 6224 */ |
| 6225 static char_u * | |
| 6226 regnext(p) | |
| 6227 char_u *p; | |
| 6228 { | |
| 6229 int offset; | |
| 6230 | |
| 2010 | 6231 if (p == JUST_CALC_SIZE || reg_toolong) |
| 7 | 6232 return NULL; |
| 6233 | |
| 6234 offset = NEXT(p); | |
| 6235 if (offset == 0) | |
| 6236 return NULL; | |
| 6237 | |
| 233 | 6238 if (OP(p) == BACK) |
| 7 | 6239 return p - offset; |
| 6240 else | |
| 6241 return p + offset; | |
| 6242 } | |
| 6243 | |
| 6244 /* | |
| 6245 * Check the regexp program for its magic number. | |
| 6246 * Return TRUE if it's wrong. | |
| 6247 */ | |
| 6248 static int | |
| 6249 prog_magic_wrong() | |
| 6250 { | |
| 4444 | 6251 regprog_T *prog; |
| 6252 | |
| 6253 prog = REG_MULTI ? reg_mmatch->regprog : reg_match->regprog; | |
| 6254 if (prog->engine == &nfa_regengine) | |
| 6255 /* For NFA matcher we don't check the magic */ | |
| 6256 return FALSE; | |
| 6257 | |
| 6258 if (UCHARAT(((bt_regprog_T *)prog)->program) != REGMAGIC) | |
| 7 | 6259 { |
| 6260 EMSG(_(e_re_corr)); | |
| 6261 return TRUE; | |
| 6262 } | |
| 6263 return FALSE; | |
| 6264 } | |
| 6265 | |
| 6266 /* | |
| 6267 * Cleanup the subexpressions, if this wasn't done yet. | |
| 6268 * This construction is used to clear the subexpressions only when they are | |
| 6269 * used (to increase speed). | |
| 6270 */ | |
| 6271 static void | |
| 6272 cleanup_subexpr() | |
| 6273 { | |
| 6274 if (need_clear_subexpr) | |
| 6275 { | |
| 6276 if (REG_MULTI) | |
| 6277 { | |
| 6278 /* Use 0xff to set lnum to -1 */ | |
| 6279 vim_memset(reg_startpos, 0xff, sizeof(lpos_T) * NSUBEXP); | |
| 6280 vim_memset(reg_endpos, 0xff, sizeof(lpos_T) * NSUBEXP); | |
| 6281 } | |
| 6282 else | |
| 6283 { | |
| 6284 vim_memset(reg_startp, 0, sizeof(char_u *) * NSUBEXP); | |
| 6285 vim_memset(reg_endp, 0, sizeof(char_u *) * NSUBEXP); | |
| 6286 } | |
| 6287 need_clear_subexpr = FALSE; | |
| 6288 } | |
| 6289 } | |
| 6290 | |
| 6291 #ifdef FEAT_SYN_HL | |
| 6292 static void | |
| 6293 cleanup_zsubexpr() | |
| 6294 { | |
| 6295 if (need_clear_zsubexpr) | |
| 6296 { | |
| 6297 if (REG_MULTI) | |
| 6298 { | |
| 6299 /* Use 0xff to set lnum to -1 */ | |
| 6300 vim_memset(reg_startzpos, 0xff, sizeof(lpos_T) * NSUBEXP); | |
| 6301 vim_memset(reg_endzpos, 0xff, sizeof(lpos_T) * NSUBEXP); | |
| 6302 } | |
| 6303 else | |
| 6304 { | |
| 6305 vim_memset(reg_startzp, 0, sizeof(char_u *) * NSUBEXP); | |
| 6306 vim_memset(reg_endzp, 0, sizeof(char_u *) * NSUBEXP); | |
| 6307 } | |
| 6308 need_clear_zsubexpr = FALSE; | |
| 6309 } | |
| 6310 } | |
| 6311 #endif | |
| 6312 | |
| 6313 /* | |
| 1579 | 6314 * Save the current subexpr to "bp", so that they can be restored |
| 6315 * later by restore_subexpr(). | |
| 6316 */ | |
| 6317 static void | |
| 6318 save_subexpr(bp) | |
| 6319 regbehind_T *bp; | |
| 6320 { | |
| 6321 int i; | |
| 6322 | |
| 1602 | 6323 /* When "need_clear_subexpr" is set we don't need to save the values, only |
| 6324 * remember that this flag needs to be set again when restoring. */ | |
| 6325 bp->save_need_clear_subexpr = need_clear_subexpr; | |
| 6326 if (!need_clear_subexpr) | |
| 1579 | 6327 { |
| 1602 | 6328 for (i = 0; i < NSUBEXP; ++i) |
| 1579 | 6329 { |
| 1602 | 6330 if (REG_MULTI) |
| 6331 { | |
| 6332 bp->save_start[i].se_u.pos = reg_startpos[i]; | |
| 6333 bp->save_end[i].se_u.pos = reg_endpos[i]; | |
| 6334 } | |
| 6335 else | |
| 6336 { | |
| 6337 bp->save_start[i].se_u.ptr = reg_startp[i]; | |
| 6338 bp->save_end[i].se_u.ptr = reg_endp[i]; | |
| 6339 } | |
| 1579 | 6340 } |
| 6341 } | |
| 6342 } | |
| 6343 | |
| 6344 /* | |
| 6345 * Restore the subexpr from "bp". | |
| 6346 */ | |
| 6347 static void | |
| 6348 restore_subexpr(bp) | |
| 6349 regbehind_T *bp; | |
| 6350 { | |
| 6351 int i; | |
| 6352 | |
| 1602 | 6353 /* Only need to restore saved values when they are not to be cleared. */ |
| 6354 need_clear_subexpr = bp->save_need_clear_subexpr; | |
| 6355 if (!need_clear_subexpr) | |
| 1579 | 6356 { |
| 1602 | 6357 for (i = 0; i < NSUBEXP; ++i) |
| 1579 | 6358 { |
| 1602 | 6359 if (REG_MULTI) |
| 6360 { | |
| 6361 reg_startpos[i] = bp->save_start[i].se_u.pos; | |
| 6362 reg_endpos[i] = bp->save_end[i].se_u.pos; | |
| 6363 } | |
| 6364 else | |
| 6365 { | |
| 6366 reg_startp[i] = bp->save_start[i].se_u.ptr; | |
| 6367 reg_endp[i] = bp->save_end[i].se_u.ptr; | |
| 6368 } | |
| 1579 | 6369 } |
| 6370 } | |
| 6371 } | |
| 6372 | |
| 6373 /* | |
| 7 | 6374 * Advance reglnum, regline and reginput to the next line. |
| 6375 */ | |
| 6376 static void | |
| 6377 reg_nextline() | |
| 6378 { | |
| 6379 regline = reg_getline(++reglnum); | |
| 6380 reginput = regline; | |
| 6381 fast_breakcheck(); | |
| 6382 } | |
| 6383 | |
| 6384 /* | |
| 6385 * Save the input line and position in a regsave_T. | |
| 6386 */ | |
| 6387 static void | |
| 233 | 6388 reg_save(save, gap) |
| 7 | 6389 regsave_T *save; |
| 233 | 6390 garray_T *gap; |
| 7 | 6391 { |
| 6392 if (REG_MULTI) | |
| 6393 { | |
| 6394 save->rs_u.pos.col = (colnr_T)(reginput - regline); | |
| 6395 save->rs_u.pos.lnum = reglnum; | |
| 6396 } | |
| 6397 else | |
| 6398 save->rs_u.ptr = reginput; | |
| 233 | 6399 save->rs_len = gap->ga_len; |
| 7 | 6400 } |
| 6401 | |
| 6402 /* | |
| 6403 * Restore the input line and position from a regsave_T. | |
| 6404 */ | |
| 6405 static void | |
| 233 | 6406 reg_restore(save, gap) |
| 7 | 6407 regsave_T *save; |
| 233 | 6408 garray_T *gap; |
| 7 | 6409 { |
| 6410 if (REG_MULTI) | |
| 6411 { | |
| 6412 if (reglnum != save->rs_u.pos.lnum) | |
| 6413 { | |
| 6414 /* only call reg_getline() when the line number changed to save | |
| 6415 * a bit of time */ | |
| 6416 reglnum = save->rs_u.pos.lnum; | |
| 6417 regline = reg_getline(reglnum); | |
| 6418 } | |
| 6419 reginput = regline + save->rs_u.pos.col; | |
| 6420 } | |
| 6421 else | |
| 6422 reginput = save->rs_u.ptr; | |
| 233 | 6423 gap->ga_len = save->rs_len; |
| 7 | 6424 } |
| 6425 | |
| 6426 /* | |
| 6427 * Return TRUE if current position is equal to saved position. | |
| 6428 */ | |
| 6429 static int | |
| 6430 reg_save_equal(save) | |
| 6431 regsave_T *save; | |
| 6432 { | |
| 6433 if (REG_MULTI) | |
| 6434 return reglnum == save->rs_u.pos.lnum | |
| 6435 && reginput == regline + save->rs_u.pos.col; | |
| 6436 return reginput == save->rs_u.ptr; | |
| 6437 } | |
| 6438 | |
| 6439 /* | |
| 6440 * Tentatively set the sub-expression start to the current position (after | |
| 6441 * calling regmatch() they will have changed). Need to save the existing | |
| 6442 * values for when there is no match. | |
| 6443 * Use se_save() to use pointer (save_se_multi()) or position (save_se_one()), | |
| 6444 * depending on REG_MULTI. | |
| 6445 */ | |
| 6446 static void | |
| 6447 save_se_multi(savep, posp) | |
| 6448 save_se_T *savep; | |
| 6449 lpos_T *posp; | |
| 6450 { | |
| 6451 savep->se_u.pos = *posp; | |
| 6452 posp->lnum = reglnum; | |
| 6453 posp->col = (colnr_T)(reginput - regline); | |
| 6454 } | |
| 6455 | |
| 6456 static void | |
| 6457 save_se_one(savep, pp) | |
| 6458 save_se_T *savep; | |
| 6459 char_u **pp; | |
| 6460 { | |
| 6461 savep->se_u.ptr = *pp; | |
| 6462 *pp = reginput; | |
| 6463 } | |
| 6464 | |
| 6465 /* | |
| 6466 * Compare a number with the operand of RE_LNUM, RE_COL or RE_VCOL. | |
| 6467 */ | |
| 6468 static int | |
| 6469 re_num_cmp(val, scan) | |
| 6470 long_u val; | |
| 6471 char_u *scan; | |
| 6472 { | |
| 6473 long_u n = OPERAND_MIN(scan); | |
| 6474 | |
| 6475 if (OPERAND_CMP(scan) == '>') | |
| 6476 return val > n; | |
| 6477 if (OPERAND_CMP(scan) == '<') | |
| 6478 return val < n; | |
| 6479 return val == n; | |
| 6480 } | |
| 6481 | |
| 6482 | |
| 4444 | 6483 #ifdef BT_REGEXP_DUMP |
| 7 | 6484 |
| 6485 /* | |
| 6486 * regdump - dump a regexp onto stdout in vaguely comprehensible form | |
| 6487 */ | |
| 6488 static void | |
| 6489 regdump(pattern, r) | |
| 6490 char_u *pattern; | |
| 4444 | 6491 bt_regprog_T *r; |
| 7 | 6492 { |
| 6493 char_u *s; | |
| 6494 int op = EXACTLY; /* Arbitrary non-END op. */ | |
| 6495 char_u *next; | |
| 6496 char_u *end = NULL; | |
| 4444 | 6497 FILE *f; |
| 6498 | |
| 6499 #ifdef BT_REGEXP_LOG | |
| 6500 f = fopen("bt_regexp_log.log", "a"); | |
| 6501 #else | |
| 6502 f = stdout; | |
| 6503 #endif | |
| 6504 if (f == NULL) | |
| 6505 return; | |
| 6506 fprintf(f, "-------------------------------------\n\r\nregcomp(%s):\r\n", pattern); | |
| 7 | 6507 |
| 6508 s = r->program + 1; | |
| 6509 /* | |
| 6510 * Loop until we find the END that isn't before a referred next (an END | |
| 6511 * can also appear in a NOMATCH operand). | |
| 6512 */ | |
| 6513 while (op != END || s <= end) | |
| 6514 { | |
| 6515 op = OP(s); | |
| 4444 | 6516 fprintf(f, "%2d%s", (int)(s - r->program), regprop(s)); /* Where, what. */ |
| 7 | 6517 next = regnext(s); |
| 6518 if (next == NULL) /* Next ptr. */ | |
| 4444 | 6519 fprintf(f, "(0)"); |
| 7 | 6520 else |
| 4444 | 6521 fprintf(f, "(%d)", (int)((s - r->program) + (next - s))); |
| 7 | 6522 if (end < next) |
| 6523 end = next; | |
| 6524 if (op == BRACE_LIMITS) | |
| 6525 { | |
| 6526 /* Two short ints */ | |
| 4444 | 6527 fprintf(f, " minval %ld, maxval %ld", OPERAND_MIN(s), OPERAND_MAX(s)); |
| 7 | 6528 s += 8; |
| 6529 } | |
| 6530 s += 3; | |
| 6531 if (op == ANYOF || op == ANYOF + ADD_NL | |
| 6532 || op == ANYBUT || op == ANYBUT + ADD_NL | |
| 6533 || op == EXACTLY) | |
| 6534 { | |
| 6535 /* Literal string, where present. */ | |
| 4444 | 6536 fprintf(f, "\nxxxxxxxxx\n"); |
| 7 | 6537 while (*s != NUL) |
| 4444 | 6538 fprintf(f, "%c", *s++); |
| 6539 fprintf(f, "\nxxxxxxxxx\n"); | |
| 7 | 6540 s++; |
| 6541 } | |
| 4444 | 6542 fprintf(f, "\r\n"); |
| 7 | 6543 } |
| 6544 | |
| 6545 /* Header fields of interest. */ | |
| 6546 if (r->regstart != NUL) | |
| 4444 | 6547 fprintf(f, "start `%s' 0x%x; ", r->regstart < 256 |
| 7 | 6548 ? (char *)transchar(r->regstart) |
| 6549 : "multibyte", r->regstart); | |
| 6550 if (r->reganch) | |
| 4444 | 6551 fprintf(f, "anchored; "); |
| 7 | 6552 if (r->regmust != NULL) |
| 4444 | 6553 fprintf(f, "must have \"%s\"", r->regmust); |
| 6554 fprintf(f, "\r\n"); | |
| 6555 | |
| 6556 #ifdef BT_REGEXP_LOG | |
| 6557 fclose(f); | |
| 6558 #endif | |
| 7 | 6559 } |
| 4444 | 6560 #endif /* BT_REGEXP_DUMP */ |
| 6561 | |
| 6562 #ifdef DEBUG | |
| 7 | 6563 /* |
| 6564 * regprop - printable representation of opcode | |
| 6565 */ | |
| 6566 static char_u * | |
| 6567 regprop(op) | |
| 6568 char_u *op; | |
| 6569 { | |
| 4444 | 6570 char *p; |
| 6571 static char buf[50]; | |
| 6572 | |
| 6573 STRCPY(buf, ":"); | |
| 6574 | |
| 6575 switch ((int) OP(op)) | |
| 7 | 6576 { |
| 6577 case BOL: | |
| 6578 p = "BOL"; | |
| 6579 break; | |
| 6580 case EOL: | |
| 6581 p = "EOL"; | |
| 6582 break; | |
| 6583 case RE_BOF: | |
| 6584 p = "BOF"; | |
| 6585 break; | |
| 6586 case RE_EOF: | |
| 6587 p = "EOF"; | |
| 6588 break; | |
| 6589 case CURSOR: | |
| 6590 p = "CURSOR"; | |
| 6591 break; | |
| 639 | 6592 case RE_VISUAL: |
| 6593 p = "RE_VISUAL"; | |
| 6594 break; | |
| 7 | 6595 case RE_LNUM: |
| 6596 p = "RE_LNUM"; | |
| 6597 break; | |
| 639 | 6598 case RE_MARK: |
| 6599 p = "RE_MARK"; | |
| 6600 break; | |
| 7 | 6601 case RE_COL: |
| 6602 p = "RE_COL"; | |
| 6603 break; | |
| 6604 case RE_VCOL: | |
| 6605 p = "RE_VCOL"; | |
| 6606 break; | |
| 6607 case BOW: | |
| 6608 p = "BOW"; | |
| 6609 break; | |
| 6610 case EOW: | |
| 6611 p = "EOW"; | |
| 6612 break; | |
| 6613 case ANY: | |
| 6614 p = "ANY"; | |
| 6615 break; | |
| 6616 case ANY + ADD_NL: | |
| 6617 p = "ANY+NL"; | |
| 6618 break; | |
| 6619 case ANYOF: | |
| 6620 p = "ANYOF"; | |
| 6621 break; | |
| 6622 case ANYOF + ADD_NL: | |
| 6623 p = "ANYOF+NL"; | |
| 6624 break; | |
| 6625 case ANYBUT: | |
| 6626 p = "ANYBUT"; | |
| 6627 break; | |
| 6628 case ANYBUT + ADD_NL: | |
| 6629 p = "ANYBUT+NL"; | |
| 6630 break; | |
| 6631 case IDENT: | |
| 6632 p = "IDENT"; | |
| 6633 break; | |
| 6634 case IDENT + ADD_NL: | |
| 6635 p = "IDENT+NL"; | |
| 6636 break; | |
| 6637 case SIDENT: | |
| 6638 p = "SIDENT"; | |
| 6639 break; | |
| 6640 case SIDENT + ADD_NL: | |
| 6641 p = "SIDENT+NL"; | |
| 6642 break; | |
| 6643 case KWORD: | |
| 6644 p = "KWORD"; | |
| 6645 break; | |
| 6646 case KWORD + ADD_NL: | |
| 6647 p = "KWORD+NL"; | |
| 6648 break; | |
| 6649 case SKWORD: | |
| 6650 p = "SKWORD"; | |
| 6651 break; | |
| 6652 case SKWORD + ADD_NL: | |
| 6653 p = "SKWORD+NL"; | |
| 6654 break; | |
| 6655 case FNAME: | |
| 6656 p = "FNAME"; | |
| 6657 break; | |
| 6658 case FNAME + ADD_NL: | |
| 6659 p = "FNAME+NL"; | |
| 6660 break; | |
| 6661 case SFNAME: | |
| 6662 p = "SFNAME"; | |
| 6663 break; | |
| 6664 case SFNAME + ADD_NL: | |
| 6665 p = "SFNAME+NL"; | |
| 6666 break; | |
| 6667 case PRINT: | |
| 6668 p = "PRINT"; | |
| 6669 break; | |
| 6670 case PRINT + ADD_NL: | |
| 6671 p = "PRINT+NL"; | |
| 6672 break; | |
| 6673 case SPRINT: | |
| 6674 p = "SPRINT"; | |
| 6675 break; | |
| 6676 case SPRINT + ADD_NL: | |
| 6677 p = "SPRINT+NL"; | |
| 6678 break; | |
| 6679 case WHITE: | |
| 6680 p = "WHITE"; | |
| 6681 break; | |
| 6682 case WHITE + ADD_NL: | |
| 6683 p = "WHITE+NL"; | |
| 6684 break; | |
| 6685 case NWHITE: | |
| 6686 p = "NWHITE"; | |
| 6687 break; | |
| 6688 case NWHITE + ADD_NL: | |
| 6689 p = "NWHITE+NL"; | |
| 6690 break; | |
| 6691 case DIGIT: | |
| 6692 p = "DIGIT"; | |
| 6693 break; | |
| 6694 case DIGIT + ADD_NL: | |
| 6695 p = "DIGIT+NL"; | |
| 6696 break; | |
| 6697 case NDIGIT: | |
| 6698 p = "NDIGIT"; | |
| 6699 break; | |
| 6700 case NDIGIT + ADD_NL: | |
| 6701 p = "NDIGIT+NL"; | |
| 6702 break; | |
| 6703 case HEX: | |
| 6704 p = "HEX"; | |
| 6705 break; | |
| 6706 case HEX + ADD_NL: | |
| 6707 p = "HEX+NL"; | |
| 6708 break; | |
| 6709 case NHEX: | |
| 6710 p = "NHEX"; | |
| 6711 break; | |
| 6712 case NHEX + ADD_NL: | |
| 6713 p = "NHEX+NL"; | |
| 6714 break; | |
| 6715 case OCTAL: | |
| 6716 p = "OCTAL"; | |
| 6717 break; | |
| 6718 case OCTAL + ADD_NL: | |
| 6719 p = "OCTAL+NL"; | |
| 6720 break; | |
| 6721 case NOCTAL: | |
| 6722 p = "NOCTAL"; | |
| 6723 break; | |
| 6724 case NOCTAL + ADD_NL: | |
| 6725 p = "NOCTAL+NL"; | |
| 6726 break; | |
| 6727 case WORD: | |
| 6728 p = "WORD"; | |
| 6729 break; | |
| 6730 case WORD + ADD_NL: | |
| 6731 p = "WORD+NL"; | |
| 6732 break; | |
| 6733 case NWORD: | |
| 6734 p = "NWORD"; | |
| 6735 break; | |
| 6736 case NWORD + ADD_NL: | |
| 6737 p = "NWORD+NL"; | |
| 6738 break; | |
| 6739 case HEAD: | |
| 6740 p = "HEAD"; | |
| 6741 break; | |
| 6742 case HEAD + ADD_NL: | |
| 6743 p = "HEAD+NL"; | |
| 6744 break; | |
| 6745 case NHEAD: | |
| 6746 p = "NHEAD"; | |
| 6747 break; | |
| 6748 case NHEAD + ADD_NL: | |
| 6749 p = "NHEAD+NL"; | |
| 6750 break; | |
| 6751 case ALPHA: | |
| 6752 p = "ALPHA"; | |
| 6753 break; | |
| 6754 case ALPHA + ADD_NL: | |
| 6755 p = "ALPHA+NL"; | |
| 6756 break; | |
| 6757 case NALPHA: | |
| 6758 p = "NALPHA"; | |
| 6759 break; | |
| 6760 case NALPHA + ADD_NL: | |
| 6761 p = "NALPHA+NL"; | |
| 6762 break; | |
| 6763 case LOWER: | |
| 6764 p = "LOWER"; | |
| 6765 break; | |
| 6766 case LOWER + ADD_NL: | |
| 6767 p = "LOWER+NL"; | |
| 6768 break; | |
| 6769 case NLOWER: | |
| 6770 p = "NLOWER"; | |
| 6771 break; | |
| 6772 case NLOWER + ADD_NL: | |
| 6773 p = "NLOWER+NL"; | |
| 6774 break; | |
| 6775 case UPPER: | |
| 6776 p = "UPPER"; | |
| 6777 break; | |
| 6778 case UPPER + ADD_NL: | |
| 6779 p = "UPPER+NL"; | |
| 6780 break; | |
| 6781 case NUPPER: | |
| 6782 p = "NUPPER"; | |
| 6783 break; | |
| 6784 case NUPPER + ADD_NL: | |
| 6785 p = "NUPPER+NL"; | |
| 6786 break; | |
| 6787 case BRANCH: | |
| 6788 p = "BRANCH"; | |
| 6789 break; | |
| 6790 case EXACTLY: | |
| 6791 p = "EXACTLY"; | |
| 6792 break; | |
| 6793 case NOTHING: | |
| 6794 p = "NOTHING"; | |
| 6795 break; | |
| 6796 case BACK: | |
| 6797 p = "BACK"; | |
| 6798 break; | |
| 6799 case END: | |
| 6800 p = "END"; | |
| 6801 break; | |
| 6802 case MOPEN + 0: | |
| 6803 p = "MATCH START"; | |
| 6804 break; | |
| 6805 case MOPEN + 1: | |
| 6806 case MOPEN + 2: | |
| 6807 case MOPEN + 3: | |
| 6808 case MOPEN + 4: | |
| 6809 case MOPEN + 5: | |
| 6810 case MOPEN + 6: | |
| 6811 case MOPEN + 7: | |
| 6812 case MOPEN + 8: | |
| 6813 case MOPEN + 9: | |
| 6814 sprintf(buf + STRLEN(buf), "MOPEN%d", OP(op) - MOPEN); | |
| 6815 p = NULL; | |
| 6816 break; | |
| 6817 case MCLOSE + 0: | |
| 6818 p = "MATCH END"; | |
| 6819 break; | |
| 6820 case MCLOSE + 1: | |
| 6821 case MCLOSE + 2: | |
| 6822 case MCLOSE + 3: | |
| 6823 case MCLOSE + 4: | |
| 6824 case MCLOSE + 5: | |
| 6825 case MCLOSE + 6: | |
| 6826 case MCLOSE + 7: | |
| 6827 case MCLOSE + 8: | |
| 6828 case MCLOSE + 9: | |
| 6829 sprintf(buf + STRLEN(buf), "MCLOSE%d", OP(op) - MCLOSE); | |
| 6830 p = NULL; | |
| 6831 break; | |
| 6832 case BACKREF + 1: | |
| 6833 case BACKREF + 2: | |
| 6834 case BACKREF + 3: | |
| 6835 case BACKREF + 4: | |
| 6836 case BACKREF + 5: | |
| 6837 case BACKREF + 6: | |
| 6838 case BACKREF + 7: | |
| 6839 case BACKREF + 8: | |
| 6840 case BACKREF + 9: | |
| 6841 sprintf(buf + STRLEN(buf), "BACKREF%d", OP(op) - BACKREF); | |
| 6842 p = NULL; | |
| 6843 break; | |
| 6844 case NOPEN: | |
| 6845 p = "NOPEN"; | |
| 6846 break; | |
| 6847 case NCLOSE: | |
| 6848 p = "NCLOSE"; | |
| 6849 break; | |
| 6850 #ifdef FEAT_SYN_HL | |
| 6851 case ZOPEN + 1: | |
| 6852 case ZOPEN + 2: | |
| 6853 case ZOPEN + 3: | |
| 6854 case ZOPEN + 4: | |
| 6855 case ZOPEN + 5: | |
| 6856 case ZOPEN + 6: | |
| 6857 case ZOPEN + 7: | |
| 6858 case ZOPEN + 8: | |
| 6859 case ZOPEN + 9: | |
| 6860 sprintf(buf + STRLEN(buf), "ZOPEN%d", OP(op) - ZOPEN); | |
| 6861 p = NULL; | |
| 6862 break; | |
| 6863 case ZCLOSE + 1: | |
| 6864 case ZCLOSE + 2: | |
| 6865 case ZCLOSE + 3: | |
| 6866 case ZCLOSE + 4: | |
| 6867 case ZCLOSE + 5: | |
| 6868 case ZCLOSE + 6: | |
| 6869 case ZCLOSE + 7: | |
| 6870 case ZCLOSE + 8: | |
| 6871 case ZCLOSE + 9: | |
| 6872 sprintf(buf + STRLEN(buf), "ZCLOSE%d", OP(op) - ZCLOSE); | |
| 6873 p = NULL; | |
| 6874 break; | |
| 6875 case ZREF + 1: | |
| 6876 case ZREF + 2: | |
| 6877 case ZREF + 3: | |
| 6878 case ZREF + 4: | |
| 6879 case ZREF + 5: | |
| 6880 case ZREF + 6: | |
| 6881 case ZREF + 7: | |
| 6882 case ZREF + 8: | |
| 6883 case ZREF + 9: | |
| 6884 sprintf(buf + STRLEN(buf), "ZREF%d", OP(op) - ZREF); | |
| 6885 p = NULL; | |
| 6886 break; | |
| 6887 #endif | |
| 6888 case STAR: | |
| 6889 p = "STAR"; | |
| 6890 break; | |
| 6891 case PLUS: | |
| 6892 p = "PLUS"; | |
| 6893 break; | |
| 6894 case NOMATCH: | |
| 6895 p = "NOMATCH"; | |
| 6896 break; | |
| 6897 case MATCH: | |
| 6898 p = "MATCH"; | |
| 6899 break; | |
| 6900 case BEHIND: | |
| 6901 p = "BEHIND"; | |
| 6902 break; | |
| 6903 case NOBEHIND: | |
| 6904 p = "NOBEHIND"; | |
| 6905 break; | |
| 6906 case SUBPAT: | |
| 6907 p = "SUBPAT"; | |
| 6908 break; | |
| 6909 case BRACE_LIMITS: | |
| 6910 p = "BRACE_LIMITS"; | |
| 6911 break; | |
| 6912 case BRACE_SIMPLE: | |
| 6913 p = "BRACE_SIMPLE"; | |
| 6914 break; | |
| 6915 case BRACE_COMPLEX + 0: | |
| 6916 case BRACE_COMPLEX + 1: | |
| 6917 case BRACE_COMPLEX + 2: | |
| 6918 case BRACE_COMPLEX + 3: | |
| 6919 case BRACE_COMPLEX + 4: | |
| 6920 case BRACE_COMPLEX + 5: | |
| 6921 case BRACE_COMPLEX + 6: | |
| 6922 case BRACE_COMPLEX + 7: | |
| 6923 case BRACE_COMPLEX + 8: | |
| 6924 case BRACE_COMPLEX + 9: | |
| 6925 sprintf(buf + STRLEN(buf), "BRACE_COMPLEX%d", OP(op) - BRACE_COMPLEX); | |
| 6926 p = NULL; | |
| 6927 break; | |
| 6928 #ifdef FEAT_MBYTE | |
| 6929 case MULTIBYTECODE: | |
| 6930 p = "MULTIBYTECODE"; | |
| 6931 break; | |
| 6932 #endif | |
| 6933 case NEWL: | |
| 6934 p = "NEWL"; | |
| 6935 break; | |
| 6936 default: | |
| 6937 sprintf(buf + STRLEN(buf), "corrupt %d", OP(op)); | |
| 6938 p = NULL; | |
| 6939 break; | |
| 6940 } | |
| 6941 if (p != NULL) | |
| 4444 | 6942 STRCAT(buf, p); |
| 6943 return (char_u *)buf; | |
| 7 | 6944 } |
| 4444 | 6945 #endif /* DEBUG */ |
| 7 | 6946 |
| 6947 #ifdef FEAT_MBYTE | |
| 6948 static void mb_decompose __ARGS((int c, int *c1, int *c2, int *c3)); | |
| 6949 | |
| 6950 typedef struct | |
| 6951 { | |
| 6952 int a, b, c; | |
| 6953 } decomp_T; | |
| 6954 | |
| 6955 | |
| 6956 /* 0xfb20 - 0xfb4f */ | |
| 297 | 6957 static decomp_T decomp_table[0xfb4f-0xfb20+1] = |
| 7 | 6958 { |
| 6959 {0x5e2,0,0}, /* 0xfb20 alt ayin */ | |
| 6960 {0x5d0,0,0}, /* 0xfb21 alt alef */ | |
| 6961 {0x5d3,0,0}, /* 0xfb22 alt dalet */ | |
| 6962 {0x5d4,0,0}, /* 0xfb23 alt he */ | |
| 6963 {0x5db,0,0}, /* 0xfb24 alt kaf */ | |
| 6964 {0x5dc,0,0}, /* 0xfb25 alt lamed */ | |
| 6965 {0x5dd,0,0}, /* 0xfb26 alt mem-sofit */ | |
| 6966 {0x5e8,0,0}, /* 0xfb27 alt resh */ | |
| 6967 {0x5ea,0,0}, /* 0xfb28 alt tav */ | |
| 6968 {'+', 0, 0}, /* 0xfb29 alt plus */ | |
| 6969 {0x5e9, 0x5c1, 0}, /* 0xfb2a shin+shin-dot */ | |
| 6970 {0x5e9, 0x5c2, 0}, /* 0xfb2b shin+sin-dot */ | |
| 6971 {0x5e9, 0x5c1, 0x5bc}, /* 0xfb2c shin+shin-dot+dagesh */ | |
| 6972 {0x5e9, 0x5c2, 0x5bc}, /* 0xfb2d shin+sin-dot+dagesh */ | |
| 6973 {0x5d0, 0x5b7, 0}, /* 0xfb2e alef+patah */ | |
| 6974 {0x5d0, 0x5b8, 0}, /* 0xfb2f alef+qamats */ | |
| 6975 {0x5d0, 0x5b4, 0}, /* 0xfb30 alef+hiriq */ | |
| 6976 {0x5d1, 0x5bc, 0}, /* 0xfb31 bet+dagesh */ | |
| 6977 {0x5d2, 0x5bc, 0}, /* 0xfb32 gimel+dagesh */ | |
| 6978 {0x5d3, 0x5bc, 0}, /* 0xfb33 dalet+dagesh */ | |
| 6979 {0x5d4, 0x5bc, 0}, /* 0xfb34 he+dagesh */ | |
| 6980 {0x5d5, 0x5bc, 0}, /* 0xfb35 vav+dagesh */ | |
| 6981 {0x5d6, 0x5bc, 0}, /* 0xfb36 zayin+dagesh */ | |
| 6982 {0xfb37, 0, 0}, /* 0xfb37 -- UNUSED */ | |
| 6983 {0x5d8, 0x5bc, 0}, /* 0xfb38 tet+dagesh */ | |
| 6984 {0x5d9, 0x5bc, 0}, /* 0xfb39 yud+dagesh */ | |
| 6985 {0x5da, 0x5bc, 0}, /* 0xfb3a kaf sofit+dagesh */ | |
| 6986 {0x5db, 0x5bc, 0}, /* 0xfb3b kaf+dagesh */ | |
| 6987 {0x5dc, 0x5bc, 0}, /* 0xfb3c lamed+dagesh */ | |
| 6988 {0xfb3d, 0, 0}, /* 0xfb3d -- UNUSED */ | |
| 6989 {0x5de, 0x5bc, 0}, /* 0xfb3e mem+dagesh */ | |
| 6990 {0xfb3f, 0, 0}, /* 0xfb3f -- UNUSED */ | |
| 6991 {0x5e0, 0x5bc, 0}, /* 0xfb40 nun+dagesh */ | |
| 6992 {0x5e1, 0x5bc, 0}, /* 0xfb41 samech+dagesh */ | |
| 6993 {0xfb42, 0, 0}, /* 0xfb42 -- UNUSED */ | |
| 6994 {0x5e3, 0x5bc, 0}, /* 0xfb43 pe sofit+dagesh */ | |
| 6995 {0x5e4, 0x5bc,0}, /* 0xfb44 pe+dagesh */ | |
| 6996 {0xfb45, 0, 0}, /* 0xfb45 -- UNUSED */ | |
| 6997 {0x5e6, 0x5bc, 0}, /* 0xfb46 tsadi+dagesh */ | |
| 6998 {0x5e7, 0x5bc, 0}, /* 0xfb47 qof+dagesh */ | |
| 6999 {0x5e8, 0x5bc, 0}, /* 0xfb48 resh+dagesh */ | |
| 7000 {0x5e9, 0x5bc, 0}, /* 0xfb49 shin+dagesh */ | |
| 7001 {0x5ea, 0x5bc, 0}, /* 0xfb4a tav+dagesh */ | |
| 7002 {0x5d5, 0x5b9, 0}, /* 0xfb4b vav+holam */ | |
| 7003 {0x5d1, 0x5bf, 0}, /* 0xfb4c bet+rafe */ | |
| 7004 {0x5db, 0x5bf, 0}, /* 0xfb4d kaf+rafe */ | |
| 7005 {0x5e4, 0x5bf, 0}, /* 0xfb4e pe+rafe */ | |
| 7006 {0x5d0, 0x5dc, 0} /* 0xfb4f alef-lamed */ | |
| 7007 }; | |
| 7008 | |
| 7009 static void | |
| 7010 mb_decompose(c, c1, c2, c3) | |
| 7011 int c, *c1, *c2, *c3; | |
| 7012 { | |
| 7013 decomp_T d; | |
| 7014 | |
|
4505
d037b9cbdaaa
updated for version 7.3.1000
Bram Moolenaar <bram@vim.org>
parents:
4466
diff
changeset
|
7015 if (c >= 0xfb20 && c <= 0xfb4f) |
| 7 | 7016 { |
| 7017 d = decomp_table[c - 0xfb20]; | |
| 7018 *c1 = d.a; | |
| 7019 *c2 = d.b; | |
| 7020 *c3 = d.c; | |
| 7021 } | |
| 7022 else | |
| 7023 { | |
| 7024 *c1 = c; | |
| 7025 *c2 = *c3 = 0; | |
| 7026 } | |
| 7027 } | |
| 7028 #endif | |
| 7029 | |
| 7030 /* | |
| 7031 * Compare two strings, ignore case if ireg_ic set. | |
| 7032 * Return 0 if strings match, non-zero otherwise. | |
| 7033 * Correct the length "*n" when composing characters are ignored. | |
| 7034 */ | |
| 7035 static int | |
| 7036 cstrncmp(s1, s2, n) | |
| 7037 char_u *s1, *s2; | |
| 7038 int *n; | |
| 7039 { | |
| 7040 int result; | |
| 7041 | |
| 7042 if (!ireg_ic) | |
| 7043 result = STRNCMP(s1, s2, *n); | |
| 7044 else | |
| 7045 result = MB_STRNICMP(s1, s2, *n); | |
| 7046 | |
| 7047 #ifdef FEAT_MBYTE | |
| 7048 /* if it failed and it's utf8 and we want to combineignore: */ | |
| 7049 if (result != 0 && enc_utf8 && ireg_icombine) | |
| 7050 { | |
| 7051 char_u *str1, *str2; | |
| 7052 int c1, c2, c11, c12; | |
| 7053 int junk; | |
| 7054 | |
| 7055 /* we have to handle the strcmp ourselves, since it is necessary to | |
| 7056 * deal with the composing characters by ignoring them: */ | |
| 7057 str1 = s1; | |
| 7058 str2 = s2; | |
| 7059 c1 = c2 = 0; | |
| 507 | 7060 while ((int)(str1 - s1) < *n) |
| 7 | 7061 { |
| 7062 c1 = mb_ptr2char_adv(&str1); | |
| 7063 c2 = mb_ptr2char_adv(&str2); | |
| 7064 | |
| 7065 /* decompose the character if necessary, into 'base' characters | |
| 7066 * because I don't care about Arabic, I will hard-code the Hebrew | |
| 7067 * which I *do* care about! So sue me... */ | |
| 7068 if (c1 != c2 && (!ireg_ic || utf_fold(c1) != utf_fold(c2))) | |
| 7069 { | |
| 7070 /* decomposition necessary? */ | |
| 7071 mb_decompose(c1, &c11, &junk, &junk); | |
| 7072 mb_decompose(c2, &c12, &junk, &junk); | |
| 7073 c1 = c11; | |
| 7074 c2 = c12; | |
| 7075 if (c11 != c12 && (!ireg_ic || utf_fold(c11) != utf_fold(c12))) | |
| 7076 break; | |
| 7077 } | |
| 7078 } | |
| 7079 result = c2 - c1; | |
| 7080 if (result == 0) | |
| 7081 *n = (int)(str2 - s2); | |
| 7082 } | |
| 7083 #endif | |
| 7084 | |
| 7085 return result; | |
| 7086 } | |
| 7087 | |
| 7088 /* | |
| 7089 * cstrchr: This function is used a lot for simple searches, keep it fast! | |
| 7090 */ | |
| 7091 static char_u * | |
| 7092 cstrchr(s, c) | |
| 7093 char_u *s; | |
| 7094 int c; | |
| 7095 { | |
| 7096 char_u *p; | |
| 7097 int cc; | |
| 7098 | |
| 7099 if (!ireg_ic | |
| 7100 #ifdef FEAT_MBYTE | |
| 7101 || (!enc_utf8 && mb_char2len(c) > 1) | |
| 7102 #endif | |
| 7103 ) | |
| 7104 return vim_strchr(s, c); | |
| 7105 | |
| 7106 /* tolower() and toupper() can be slow, comparing twice should be a lot | |
| 7107 * faster (esp. when using MS Visual C++!). | |
| 7108 * For UTF-8 need to use folded case. */ | |
| 7109 #ifdef FEAT_MBYTE | |
| 7110 if (enc_utf8 && c > 0x80) | |
| 7111 cc = utf_fold(c); | |
| 7112 else | |
| 7113 #endif | |
| 1347 | 7114 if (MB_ISUPPER(c)) |
| 7115 cc = MB_TOLOWER(c); | |
| 7116 else if (MB_ISLOWER(c)) | |
| 7117 cc = MB_TOUPPER(c); | |
| 7 | 7118 else |
| 7119 return vim_strchr(s, c); | |
| 7120 | |
| 7121 #ifdef FEAT_MBYTE | |
| 7122 if (has_mbyte) | |
| 7123 { | |
| 474 | 7124 for (p = s; *p != NUL; p += (*mb_ptr2len)(p)) |
| 7 | 7125 { |
| 7126 if (enc_utf8 && c > 0x80) | |
| 7127 { | |
| 7128 if (utf_fold(utf_ptr2char(p)) == cc) | |
| 7129 return p; | |
| 7130 } | |
| 7131 else if (*p == c || *p == cc) | |
| 7132 return p; | |
| 7133 } | |
| 7134 } | |
| 7135 else | |
| 7136 #endif | |
| 7137 /* Faster version for when there are no multi-byte characters. */ | |
| 7138 for (p = s; *p != NUL; ++p) | |
| 7139 if (*p == c || *p == cc) | |
| 7140 return p; | |
| 7141 | |
| 7142 return NULL; | |
| 7143 } | |
| 7144 | |
| 7145 /*************************************************************** | |
| 7146 * regsub stuff * | |
| 7147 ***************************************************************/ | |
| 7148 | |
| 7149 /* This stuff below really confuses cc on an SGI -- webb */ | |
| 7150 #ifdef __sgi | |
| 7151 # undef __ARGS | |
| 7152 # define __ARGS(x) () | |
| 7153 #endif | |
| 7154 | |
| 7155 /* | |
| 7156 * We should define ftpr as a pointer to a function returning a pointer to | |
| 7157 * a function returning a pointer to a function ... | |
| 7158 * This is impossible, so we declare a pointer to a function returning a | |
| 7159 * pointer to a function returning void. This should work for all compilers. | |
| 7160 */ | |
| 772 | 7161 typedef void (*(*fptr_T) __ARGS((int *, int)))(); |
| 7162 | |
| 7163 static fptr_T do_upper __ARGS((int *, int)); | |
| 7164 static fptr_T do_Upper __ARGS((int *, int)); | |
| 7165 static fptr_T do_lower __ARGS((int *, int)); | |
| 7166 static fptr_T do_Lower __ARGS((int *, int)); | |
| 7 | 7167 |
| 7168 static int vim_regsub_both __ARGS((char_u *source, char_u *dest, int copy, int magic, int backslash)); | |
| 7169 | |
| 772 | 7170 static fptr_T |
| 7 | 7171 do_upper(d, c) |
| 772 | 7172 int *d; |
| 7173 int c; | |
| 7 | 7174 { |
| 772 | 7175 *d = MB_TOUPPER(c); |
| 7176 | |
| 7177 return (fptr_T)NULL; | |
| 7 | 7178 } |
| 7179 | |
| 772 | 7180 static fptr_T |
| 7181 do_Upper(d, c) | |
| 7182 int *d; | |
| 7 | 7183 int c; |
| 7184 { | |
| 772 | 7185 *d = MB_TOUPPER(c); |
| 7186 | |
| 7187 return (fptr_T)do_Upper; | |
| 7188 } | |
| 7189 | |
| 7190 static fptr_T | |
| 7191 do_lower(d, c) | |
| 7192 int *d; | |
| 7193 int c; | |
| 7194 { | |
| 7195 *d = MB_TOLOWER(c); | |
| 7196 | |
| 7197 return (fptr_T)NULL; | |
| 7198 } | |
| 7199 | |
| 7200 static fptr_T | |
| 7201 do_Lower(d, c) | |
| 7202 int *d; | |
| 7203 int c; | |
| 7204 { | |
| 7205 *d = MB_TOLOWER(c); | |
| 7206 | |
| 7207 return (fptr_T)do_Lower; | |
| 7 | 7208 } |
| 7209 | |
| 7210 /* | |
| 7211 * regtilde(): Replace tildes in the pattern by the old pattern. | |
| 7212 * | |
| 7213 * Short explanation of the tilde: It stands for the previous replacement | |
| 7214 * pattern. If that previous pattern also contains a ~ we should go back a | |
| 7215 * step further... But we insert the previous pattern into the current one | |
| 7216 * and remember that. | |
| 772 | 7217 * This still does not handle the case where "magic" changes. So require the |
| 7218 * user to keep his hands off of "magic". | |
| 7 | 7219 * |
| 7220 * The tildes are parsed once before the first call to vim_regsub(). | |
| 7221 */ | |
| 7222 char_u * | |
| 7223 regtilde(source, magic) | |
| 7224 char_u *source; | |
| 7225 int magic; | |
| 7226 { | |
| 7227 char_u *newsub = source; | |
| 7228 char_u *tmpsub; | |
| 7229 char_u *p; | |
| 7230 int len; | |
| 7231 int prevlen; | |
| 7232 | |
| 7233 for (p = newsub; *p; ++p) | |
| 7234 { | |
| 7235 if ((*p == '~' && magic) || (*p == '\\' && *(p + 1) == '~' && !magic)) | |
| 7236 { | |
| 7237 if (reg_prev_sub != NULL) | |
| 7238 { | |
| 7239 /* length = len(newsub) - 1 + len(prev_sub) + 1 */ | |
| 7240 prevlen = (int)STRLEN(reg_prev_sub); | |
| 7241 tmpsub = alloc((unsigned)(STRLEN(newsub) + prevlen)); | |
| 7242 if (tmpsub != NULL) | |
| 7243 { | |
| 7244 /* copy prefix */ | |
| 7245 len = (int)(p - newsub); /* not including ~ */ | |
| 7246 mch_memmove(tmpsub, newsub, (size_t)len); | |
| 1209 | 7247 /* interpret tilde */ |
| 7 | 7248 mch_memmove(tmpsub + len, reg_prev_sub, (size_t)prevlen); |
| 7249 /* copy postfix */ | |
| 7250 if (!magic) | |
| 7251 ++p; /* back off \ */ | |
| 7252 STRCPY(tmpsub + len + prevlen, p + 1); | |
| 7253 | |
| 7254 if (newsub != source) /* already allocated newsub */ | |
| 7255 vim_free(newsub); | |
| 7256 newsub = tmpsub; | |
| 7257 p = newsub + len + prevlen; | |
| 7258 } | |
| 7259 } | |
| 7260 else if (magic) | |
| 1621 | 7261 STRMOVE(p, p + 1); /* remove '~' */ |
| 7 | 7262 else |
| 1621 | 7263 STRMOVE(p, p + 2); /* remove '\~' */ |
| 7 | 7264 --p; |
| 7265 } | |
| 7266 else | |
| 7267 { | |
| 7268 if (*p == '\\' && p[1]) /* skip escaped characters */ | |
| 7269 ++p; | |
| 7270 #ifdef FEAT_MBYTE | |
| 7271 if (has_mbyte) | |
| 474 | 7272 p += (*mb_ptr2len)(p) - 1; |
| 7 | 7273 #endif |
| 7274 } | |
| 7275 } | |
| 7276 | |
| 7277 vim_free(reg_prev_sub); | |
| 7278 if (newsub != source) /* newsub was allocated, just keep it */ | |
| 7279 reg_prev_sub = newsub; | |
| 7280 else /* no ~ found, need to save newsub */ | |
| 7281 reg_prev_sub = vim_strsave(newsub); | |
| 7282 return newsub; | |
| 7283 } | |
| 7284 | |
| 7285 #ifdef FEAT_EVAL | |
| 7286 static int can_f_submatch = FALSE; /* TRUE when submatch() can be used */ | |
| 7287 | |
| 7288 /* These pointers are used instead of reg_match and reg_mmatch for | |
| 7289 * reg_submatch(). Needed for when the substitution string is an expression | |
| 7290 * that contains a call to substitute() and submatch(). */ | |
| 7291 static regmatch_T *submatch_match; | |
| 7292 static regmmatch_T *submatch_mmatch; | |
| 2011 | 7293 static linenr_T submatch_firstlnum; |
| 7294 static linenr_T submatch_maxline; | |
| 2904 | 7295 static int submatch_line_lbr; |
| 7 | 7296 #endif |
| 7297 | |
| 7298 #if defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) || defined(PROTO) | |
| 7299 /* | |
| 7300 * vim_regsub() - perform substitutions after a vim_regexec() or | |
| 7301 * vim_regexec_multi() match. | |
| 7302 * | |
| 7303 * If "copy" is TRUE really copy into "dest". | |
| 7304 * If "copy" is FALSE nothing is copied, this is just to find out the length | |
| 7305 * of the result. | |
| 7306 * | |
| 7307 * If "backslash" is TRUE, a backslash will be removed later, need to double | |
| 7308 * them to keep them, and insert a backslash before a CR to avoid it being | |
| 7309 * replaced with a line break later. | |
| 7310 * | |
| 7311 * Note: The matched text must not change between the call of | |
| 7312 * vim_regexec()/vim_regexec_multi() and vim_regsub()! It would make the back | |
| 7313 * references invalid! | |
| 7314 * | |
| 7315 * Returns the size of the replacement, including terminating NUL. | |
| 7316 */ | |
| 7317 int | |
| 7318 vim_regsub(rmp, source, dest, copy, magic, backslash) | |
| 7319 regmatch_T *rmp; | |
| 7320 char_u *source; | |
| 7321 char_u *dest; | |
| 7322 int copy; | |
| 7323 int magic; | |
| 7324 int backslash; | |
| 7325 { | |
| 7326 reg_match = rmp; | |
| 7327 reg_mmatch = NULL; | |
| 7328 reg_maxline = 0; | |
| 4061 | 7329 reg_buf = curbuf; |
| 7 | 7330 return vim_regsub_both(source, dest, copy, magic, backslash); |
| 7331 } | |
| 7332 #endif | |
| 7333 | |
| 7334 int | |
| 7335 vim_regsub_multi(rmp, lnum, source, dest, copy, magic, backslash) | |
| 7336 regmmatch_T *rmp; | |
| 7337 linenr_T lnum; | |
| 7338 char_u *source; | |
| 7339 char_u *dest; | |
| 7340 int copy; | |
| 7341 int magic; | |
| 7342 int backslash; | |
| 7343 { | |
| 7344 reg_match = NULL; | |
| 7345 reg_mmatch = rmp; | |
| 7346 reg_buf = curbuf; /* always works on the current buffer! */ | |
| 7347 reg_firstlnum = lnum; | |
| 7348 reg_maxline = curbuf->b_ml.ml_line_count - lnum; | |
| 7349 return vim_regsub_both(source, dest, copy, magic, backslash); | |
| 7350 } | |
| 7351 | |
| 7352 static int | |
| 7353 vim_regsub_both(source, dest, copy, magic, backslash) | |
| 7354 char_u *source; | |
| 7355 char_u *dest; | |
| 7356 int copy; | |
| 7357 int magic; | |
| 7358 int backslash; | |
| 7359 { | |
| 7360 char_u *src; | |
| 7361 char_u *dst; | |
| 7362 char_u *s; | |
| 7363 int c; | |
| 772 | 7364 int cc; |
| 7 | 7365 int no = -1; |
| 4244 | 7366 fptr_T func_all = (fptr_T)NULL; |
| 7367 fptr_T func_one = (fptr_T)NULL; | |
| 7 | 7368 linenr_T clnum = 0; /* init for GCC */ |
| 7369 int len = 0; /* init for GCC */ | |
| 7370 #ifdef FEAT_EVAL | |
| 7371 static char_u *eval_result = NULL; | |
| 7372 #endif | |
| 7373 | |
| 7374 /* Be paranoid... */ | |
| 7375 if (source == NULL || dest == NULL) | |
| 7376 { | |
| 7377 EMSG(_(e_null)); | |
| 7378 return 0; | |
| 7379 } | |
| 7380 if (prog_magic_wrong()) | |
| 7381 return 0; | |
| 7382 src = source; | |
| 7383 dst = dest; | |
| 7384 | |
| 7385 /* | |
| 7386 * When the substitute part starts with "\=" evaluate it as an expression. | |
| 7387 */ | |
| 7388 if (source[0] == '\\' && source[1] == '=' | |
| 7389 #ifdef FEAT_EVAL | |
| 7390 && !can_f_submatch /* can't do this recursively */ | |
| 7391 #endif | |
| 7392 ) | |
| 7393 { | |
| 7394 #ifdef FEAT_EVAL | |
| 7395 /* To make sure that the length doesn't change between checking the | |
| 7396 * length and copying the string, and to speed up things, the | |
| 7397 * resulting string is saved from the call with "copy" == FALSE to the | |
| 7398 * call with "copy" == TRUE. */ | |
| 7399 if (copy) | |
| 7400 { | |
| 7401 if (eval_result != NULL) | |
| 7402 { | |
| 7403 STRCPY(dest, eval_result); | |
| 7404 dst += STRLEN(eval_result); | |
| 7405 vim_free(eval_result); | |
| 7406 eval_result = NULL; | |
| 7407 } | |
| 7408 } | |
| 7409 else | |
| 7410 { | |
| 7411 win_T *save_reg_win; | |
| 7412 int save_ireg_ic; | |
| 7413 | |
| 7414 vim_free(eval_result); | |
| 7415 | |
| 7416 /* The expression may contain substitute(), which calls us | |
| 7417 * recursively. Make sure submatch() gets the text from the first | |
| 7418 * level. Don't need to save "reg_buf", because | |
| 7419 * vim_regexec_multi() can't be called recursively. */ | |
| 7420 submatch_match = reg_match; | |
| 7421 submatch_mmatch = reg_mmatch; | |
| 2011 | 7422 submatch_firstlnum = reg_firstlnum; |
| 7423 submatch_maxline = reg_maxline; | |
| 2904 | 7424 submatch_line_lbr = reg_line_lbr; |
| 7 | 7425 save_reg_win = reg_win; |
| 7426 save_ireg_ic = ireg_ic; | |
| 7427 can_f_submatch = TRUE; | |
| 7428 | |
| 714 | 7429 eval_result = eval_to_string(source + 2, NULL, TRUE); |
| 7 | 7430 if (eval_result != NULL) |
| 7431 { | |
|
2125
b8744d1982d1
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Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7432 int had_backslash = FALSE; |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7433 |
| 39 | 7434 for (s = eval_result; *s != NUL; mb_ptr_adv(s)) |
| 7 | 7435 { |
| 2904 | 7436 /* Change NL to CR, so that it becomes a line break, |
| 7437 * unless called from vim_regexec_nl(). | |
| 7 | 7438 * Skip over a backslashed character. */ |
| 2904 | 7439 if (*s == NL && !submatch_line_lbr) |
| 7 | 7440 *s = CAR; |
| 7441 else if (*s == '\\' && s[1] != NUL) | |
|
2125
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7442 { |
| 7 | 7443 ++s; |
| 2173 | 7444 /* Change NL to CR here too, so that this works: |
| 7445 * :s/abc\\\ndef/\="aaa\\\nbbb"/ on text: | |
| 7446 * abc\ | |
| 7447 * def | |
| 2904 | 7448 * Not when called from vim_regexec_nl(). |
| 2173 | 7449 */ |
| 2904 | 7450 if (*s == NL && !submatch_line_lbr) |
| 2173 | 7451 *s = CAR; |
|
2125
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7452 had_backslash = TRUE; |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7453 } |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7454 } |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7455 if (had_backslash && backslash) |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7456 { |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7457 /* Backslashes will be consumed, need to double them. */ |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7458 s = vim_strsave_escaped(eval_result, (char_u *)"\\"); |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7459 if (s != NULL) |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7460 { |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7461 vim_free(eval_result); |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7462 eval_result = s; |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7463 } |
| 7 | 7464 } |
| 7465 | |
| 7466 dst += STRLEN(eval_result); | |
| 7467 } | |
| 7468 | |
| 7469 reg_match = submatch_match; | |
| 7470 reg_mmatch = submatch_mmatch; | |
| 2011 | 7471 reg_firstlnum = submatch_firstlnum; |
| 7472 reg_maxline = submatch_maxline; | |
| 2904 | 7473 reg_line_lbr = submatch_line_lbr; |
| 7 | 7474 reg_win = save_reg_win; |
| 7475 ireg_ic = save_ireg_ic; | |
| 7476 can_f_submatch = FALSE; | |
| 7477 } | |
| 7478 #endif | |
| 7479 } | |
| 7480 else | |
| 7481 while ((c = *src++) != NUL) | |
| 7482 { | |
| 7483 if (c == '&' && magic) | |
| 7484 no = 0; | |
| 7485 else if (c == '\\' && *src != NUL) | |
| 7486 { | |
| 7487 if (*src == '&' && !magic) | |
| 7488 { | |
| 7489 ++src; | |
| 7490 no = 0; | |
| 7491 } | |
| 7492 else if ('0' <= *src && *src <= '9') | |
| 7493 { | |
| 7494 no = *src++ - '0'; | |
| 7495 } | |
| 7496 else if (vim_strchr((char_u *)"uUlLeE", *src)) | |
| 7497 { | |
| 7498 switch (*src++) | |
| 7499 { | |
| 4244 | 7500 case 'u': func_one = (fptr_T)do_upper; |
| 7 | 7501 continue; |
| 4244 | 7502 case 'U': func_all = (fptr_T)do_Upper; |
| 7 | 7503 continue; |
| 4244 | 7504 case 'l': func_one = (fptr_T)do_lower; |
| 7 | 7505 continue; |
| 4244 | 7506 case 'L': func_all = (fptr_T)do_Lower; |
| 7 | 7507 continue; |
| 7508 case 'e': | |
| 4244 | 7509 case 'E': func_one = func_all = (fptr_T)NULL; |
| 7 | 7510 continue; |
| 7511 } | |
| 7512 } | |
| 7513 } | |
| 7514 if (no < 0) /* Ordinary character. */ | |
| 7515 { | |
| 798 | 7516 if (c == K_SPECIAL && src[0] != NUL && src[1] != NUL) |
| 7517 { | |
| 1209 | 7518 /* Copy a special key as-is. */ |
| 798 | 7519 if (copy) |
| 7520 { | |
| 7521 *dst++ = c; | |
| 7522 *dst++ = *src++; | |
| 7523 *dst++ = *src++; | |
| 7524 } | |
| 7525 else | |
| 7526 { | |
| 7527 dst += 3; | |
| 7528 src += 2; | |
| 7529 } | |
| 7530 continue; | |
| 7531 } | |
| 7532 | |
| 7 | 7533 if (c == '\\' && *src != NUL) |
| 7534 { | |
| 7535 /* Check for abbreviations -- webb */ | |
| 7536 switch (*src) | |
| 7537 { | |
| 7538 case 'r': c = CAR; ++src; break; | |
| 7539 case 'n': c = NL; ++src; break; | |
| 7540 case 't': c = TAB; ++src; break; | |
| 7541 /* Oh no! \e already has meaning in subst pat :-( */ | |
| 7542 /* case 'e': c = ESC; ++src; break; */ | |
| 7543 case 'b': c = Ctrl_H; ++src; break; | |
| 7544 | |
| 7545 /* If "backslash" is TRUE the backslash will be removed | |
| 7546 * later. Used to insert a literal CR. */ | |
| 7547 default: if (backslash) | |
| 7548 { | |
| 7549 if (copy) | |
| 7550 *dst = '\\'; | |
| 7551 ++dst; | |
| 7552 } | |
| 7553 c = *src++; | |
| 7554 } | |
| 7555 } | |
| 798 | 7556 #ifdef FEAT_MBYTE |
| 7557 else if (has_mbyte) | |
| 7558 c = mb_ptr2char(src - 1); | |
| 7559 #endif | |
| 7 | 7560 |
| 7561 /* Write to buffer, if copy is set. */ | |
| 4244 | 7562 if (func_one != (fptr_T)NULL) |
| 7563 /* Turbo C complains without the typecast */ | |
| 7564 func_one = (fptr_T)(func_one(&cc, c)); | |
| 7565 else if (func_all != (fptr_T)NULL) | |
| 7566 /* Turbo C complains without the typecast */ | |
| 7567 func_all = (fptr_T)(func_all(&cc, c)); | |
| 7568 else /* just copy */ | |
| 772 | 7569 cc = c; |
| 7570 | |
| 7571 #ifdef FEAT_MBYTE | |
| 7572 if (has_mbyte) | |
| 7 | 7573 { |
|
2307
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7574 int totlen = mb_ptr2len(src - 1); |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7575 |
| 7 | 7576 if (copy) |
| 772 | 7577 mb_char2bytes(cc, dst); |
| 7578 dst += mb_char2len(cc) - 1; | |
|
2307
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7579 if (enc_utf8) |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7580 { |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7581 int clen = utf_ptr2len(src - 1); |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7582 |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7583 /* If the character length is shorter than "totlen", there |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7584 * are composing characters; copy them as-is. */ |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7585 if (clen < totlen) |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7586 { |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7587 if (copy) |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7588 mch_memmove(dst + 1, src - 1 + clen, |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7589 (size_t)(totlen - clen)); |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7590 dst += totlen - clen; |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7591 } |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7592 } |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7593 src += totlen - 1; |
| 7 | 7594 } |
| 7595 else | |
| 7596 #endif | |
| 7597 if (copy) | |
| 772 | 7598 *dst = cc; |
| 7 | 7599 dst++; |
| 7600 } | |
| 7601 else | |
| 7602 { | |
| 7603 if (REG_MULTI) | |
| 7604 { | |
| 7605 clnum = reg_mmatch->startpos[no].lnum; | |
| 7606 if (clnum < 0 || reg_mmatch->endpos[no].lnum < 0) | |
| 7607 s = NULL; | |
| 7608 else | |
| 7609 { | |
| 7610 s = reg_getline(clnum) + reg_mmatch->startpos[no].col; | |
| 7611 if (reg_mmatch->endpos[no].lnum == clnum) | |
| 7612 len = reg_mmatch->endpos[no].col | |
| 7613 - reg_mmatch->startpos[no].col; | |
| 7614 else | |
| 7615 len = (int)STRLEN(s); | |
| 7616 } | |
| 7617 } | |
| 7618 else | |
| 7619 { | |
| 7620 s = reg_match->startp[no]; | |
| 7621 if (reg_match->endp[no] == NULL) | |
| 7622 s = NULL; | |
| 7623 else | |
| 7624 len = (int)(reg_match->endp[no] - s); | |
| 7625 } | |
| 7626 if (s != NULL) | |
| 7627 { | |
| 7628 for (;;) | |
| 7629 { | |
| 7630 if (len == 0) | |
| 7631 { | |
| 7632 if (REG_MULTI) | |
| 7633 { | |
| 7634 if (reg_mmatch->endpos[no].lnum == clnum) | |
| 7635 break; | |
| 7636 if (copy) | |
| 7637 *dst = CAR; | |
| 7638 ++dst; | |
| 7639 s = reg_getline(++clnum); | |
| 7640 if (reg_mmatch->endpos[no].lnum == clnum) | |
| 7641 len = reg_mmatch->endpos[no].col; | |
| 7642 else | |
| 7643 len = (int)STRLEN(s); | |
| 7644 } | |
| 7645 else | |
| 7646 break; | |
| 7647 } | |
| 7648 else if (*s == NUL) /* we hit NUL. */ | |
| 7649 { | |
| 7650 if (copy) | |
| 7651 EMSG(_(e_re_damg)); | |
| 7652 goto exit; | |
| 7653 } | |
| 7654 else | |
| 7655 { | |
| 7656 if (backslash && (*s == CAR || *s == '\\')) | |
| 7657 { | |
| 7658 /* | |
| 7659 * Insert a backslash in front of a CR, otherwise | |
| 7660 * it will be replaced by a line break. | |
| 7661 * Number of backslashes will be halved later, | |
| 7662 * double them here. | |
| 7663 */ | |
| 7664 if (copy) | |
| 7665 { | |
| 7666 dst[0] = '\\'; | |
| 7667 dst[1] = *s; | |
| 7668 } | |
| 7669 dst += 2; | |
| 7670 } | |
| 7671 else | |
| 7672 { | |
| 772 | 7673 #ifdef FEAT_MBYTE |
| 7674 if (has_mbyte) | |
| 7675 c = mb_ptr2char(s); | |
| 7676 else | |
| 7677 #endif | |
| 7678 c = *s; | |
| 7679 | |
| 4244 | 7680 if (func_one != (fptr_T)NULL) |
| 7681 /* Turbo C complains without the typecast */ | |
| 7682 func_one = (fptr_T)(func_one(&cc, c)); | |
| 7683 else if (func_all != (fptr_T)NULL) | |
| 7684 /* Turbo C complains without the typecast */ | |
| 7685 func_all = (fptr_T)(func_all(&cc, c)); | |
| 7686 else /* just copy */ | |
| 772 | 7687 cc = c; |
| 7688 | |
| 7689 #ifdef FEAT_MBYTE | |
| 7690 if (has_mbyte) | |
| 7 | 7691 { |
| 1332 | 7692 int l; |
| 7693 | |
| 7694 /* Copy composing characters separately, one | |
| 7695 * at a time. */ | |
| 7696 if (enc_utf8) | |
| 7697 l = utf_ptr2len(s) - 1; | |
| 7698 else | |
| 7699 l = mb_ptr2len(s) - 1; | |
| 772 | 7700 |
| 7701 s += l; | |
| 7702 len -= l; | |
| 7703 if (copy) | |
| 7704 mb_char2bytes(cc, dst); | |
| 7705 dst += mb_char2len(cc) - 1; | |
| 7 | 7706 } |
| 772 | 7707 else |
| 7708 #endif | |
| 7709 if (copy) | |
| 7710 *dst = cc; | |
| 7711 dst++; | |
| 7 | 7712 } |
| 772 | 7713 |
| 7 | 7714 ++s; |
| 7715 --len; | |
| 7716 } | |
| 7717 } | |
| 7718 } | |
| 7719 no = -1; | |
| 7720 } | |
| 7721 } | |
| 7722 if (copy) | |
| 7723 *dst = NUL; | |
| 7724 | |
| 7725 exit: | |
| 7726 return (int)((dst - dest) + 1); | |
| 7727 } | |
| 7728 | |
| 7729 #ifdef FEAT_EVAL | |
| 2012 | 7730 static char_u *reg_getline_submatch __ARGS((linenr_T lnum)); |
| 7731 | |
| 7 | 7732 /* |
| 2011 | 7733 * Call reg_getline() with the line numbers from the submatch. If a |
| 7734 * substitute() was used the reg_maxline and other values have been | |
| 7735 * overwritten. | |
| 7736 */ | |
| 7737 static char_u * | |
| 7738 reg_getline_submatch(lnum) | |
| 7739 linenr_T lnum; | |
| 7740 { | |
| 7741 char_u *s; | |
| 7742 linenr_T save_first = reg_firstlnum; | |
| 7743 linenr_T save_max = reg_maxline; | |
| 7744 | |
| 7745 reg_firstlnum = submatch_firstlnum; | |
| 7746 reg_maxline = submatch_maxline; | |
| 7747 | |
| 7748 s = reg_getline(lnum); | |
| 7749 | |
| 7750 reg_firstlnum = save_first; | |
| 7751 reg_maxline = save_max; | |
| 7752 return s; | |
| 7753 } | |
| 7754 | |
| 7755 /* | |
| 1209 | 7756 * Used for the submatch() function: get the string from the n'th submatch in |
| 7 | 7757 * allocated memory. |
| 7758 * Returns NULL when not in a ":s" command and for a non-existing submatch. | |
| 7759 */ | |
| 7760 char_u * | |
| 7761 reg_submatch(no) | |
| 7762 int no; | |
| 7763 { | |
| 7764 char_u *retval = NULL; | |
| 7765 char_u *s; | |
| 7766 int len; | |
| 7767 int round; | |
| 7768 linenr_T lnum; | |
| 7769 | |
| 840 | 7770 if (!can_f_submatch || no < 0) |
| 7 | 7771 return NULL; |
| 7772 | |
| 7773 if (submatch_match == NULL) | |
| 7774 { | |
| 7775 /* | |
| 7776 * First round: compute the length and allocate memory. | |
| 7777 * Second round: copy the text. | |
| 7778 */ | |
| 7779 for (round = 1; round <= 2; ++round) | |
| 7780 { | |
| 7781 lnum = submatch_mmatch->startpos[no].lnum; | |
| 7782 if (lnum < 0 || submatch_mmatch->endpos[no].lnum < 0) | |
| 7783 return NULL; | |
| 7784 | |
| 2011 | 7785 s = reg_getline_submatch(lnum) + submatch_mmatch->startpos[no].col; |
| 7 | 7786 if (s == NULL) /* anti-crash check, cannot happen? */ |
| 7787 break; | |
| 7788 if (submatch_mmatch->endpos[no].lnum == lnum) | |
| 7789 { | |
| 7790 /* Within one line: take form start to end col. */ | |
| 7791 len = submatch_mmatch->endpos[no].col | |
| 7792 - submatch_mmatch->startpos[no].col; | |
| 7793 if (round == 2) | |
| 418 | 7794 vim_strncpy(retval, s, len); |
| 7 | 7795 ++len; |
| 7796 } | |
| 7797 else | |
| 7798 { | |
| 7799 /* Multiple lines: take start line from start col, middle | |
| 7800 * lines completely and end line up to end col. */ | |
| 7801 len = (int)STRLEN(s); | |
| 7802 if (round == 2) | |
| 7803 { | |
| 7804 STRCPY(retval, s); | |
| 7805 retval[len] = '\n'; | |
| 7806 } | |
| 7807 ++len; | |
| 7808 ++lnum; | |
| 7809 while (lnum < submatch_mmatch->endpos[no].lnum) | |
| 7810 { | |
| 2011 | 7811 s = reg_getline_submatch(lnum++); |
| 7 | 7812 if (round == 2) |
| 7813 STRCPY(retval + len, s); | |
| 7814 len += (int)STRLEN(s); | |
| 7815 if (round == 2) | |
| 7816 retval[len] = '\n'; | |
| 7817 ++len; | |
| 7818 } | |
| 7819 if (round == 2) | |
| 2011 | 7820 STRNCPY(retval + len, reg_getline_submatch(lnum), |
| 7 | 7821 submatch_mmatch->endpos[no].col); |
| 7822 len += submatch_mmatch->endpos[no].col; | |
| 7823 if (round == 2) | |
| 7824 retval[len] = NUL; | |
| 7825 ++len; | |
| 7826 } | |
| 7827 | |
| 840 | 7828 if (retval == NULL) |
| 7 | 7829 { |
| 7830 retval = lalloc((long_u)len, TRUE); | |
| 840 | 7831 if (retval == NULL) |
| 7 | 7832 return NULL; |
| 7833 } | |
| 7834 } | |
| 7835 } | |
| 7836 else | |
| 7837 { | |
| 1815 | 7838 s = submatch_match->startp[no]; |
| 7839 if (s == NULL || submatch_match->endp[no] == NULL) | |
| 7 | 7840 retval = NULL; |
| 7841 else | |
| 7842 retval = vim_strnsave(s, (int)(submatch_match->endp[no] - s)); | |
| 7843 } | |
| 7844 | |
| 7845 return retval; | |
| 7846 } | |
| 7847 #endif | |
| 4444 | 7848 |
| 7849 static regengine_T bt_regengine = | |
| 7850 { | |
| 7851 bt_regcomp, | |
| 7852 bt_regexec, | |
| 7853 #if defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) \ | |
| 7854 || defined(FIND_REPLACE_DIALOG) || defined(PROTO) | |
| 7855 bt_regexec_nl, | |
| 7856 #endif | |
| 7857 bt_regexec_multi | |
| 7858 #ifdef DEBUG | |
| 7859 ,(char_u *)"" | |
| 7860 #endif | |
| 7861 }; | |
| 7862 | |
| 7863 | |
| 7864 #include "regexp_nfa.c" | |
| 7865 | |
| 7866 static regengine_T nfa_regengine = | |
| 7867 { | |
| 7868 nfa_regcomp, | |
| 7869 nfa_regexec, | |
| 7870 #if defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) \ | |
| 7871 || defined(FIND_REPLACE_DIALOG) || defined(PROTO) | |
| 7872 nfa_regexec_nl, | |
| 7873 #endif | |
| 7874 nfa_regexec_multi | |
| 7875 #ifdef DEBUG | |
| 7876 ,(char_u *)"" | |
| 7877 #endif | |
| 7878 }; | |
| 7879 | |
| 7880 /* Which regexp engine to use? Needed for vim_regcomp(). | |
| 7881 * Must match with 'regexpengine'. */ | |
| 7882 static int regexp_engine = 0; | |
| 7883 #define AUTOMATIC_ENGINE 0 | |
| 7884 #define BACKTRACKING_ENGINE 1 | |
| 7885 #define NFA_ENGINE 2 | |
| 7886 #ifdef DEBUG | |
| 7887 static char_u regname[][30] = { | |
| 7888 "AUTOMATIC Regexp Engine", | |
|
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
7889 "BACKTRACKING Regexp Engine", |
| 4444 | 7890 "NFA Regexp Engine" |
| 7891 }; | |
| 7892 #endif | |
| 7893 | |
| 7894 /* | |
| 7895 * Compile a regular expression into internal code. | |
| 7896 * Returns the program in allocated memory. Returns NULL for an error. | |
| 7897 */ | |
| 7898 regprog_T * | |
| 7899 vim_regcomp(expr_arg, re_flags) | |
| 7900 char_u *expr_arg; | |
| 7901 int re_flags; | |
| 7902 { | |
| 7903 regprog_T *prog = NULL; | |
| 7904 char_u *expr = expr_arg; | |
| 7905 | |
| 7906 syntax_error = FALSE; | |
| 7907 regexp_engine = p_re; | |
| 7908 | |
| 7909 /* Check for prefix "\%#=", that sets the regexp engine */ | |
| 7910 if (STRNCMP(expr, "\\%#=", 4) == 0) | |
| 7911 { | |
| 7912 int newengine = expr[4] - '0'; | |
| 7913 | |
| 7914 if (newengine == AUTOMATIC_ENGINE | |
| 7915 || newengine == BACKTRACKING_ENGINE | |
| 7916 || newengine == NFA_ENGINE) | |
| 7917 { | |
| 7918 regexp_engine = expr[4] - '0'; | |
| 7919 expr += 5; | |
| 7920 #ifdef DEBUG | |
| 7921 EMSG3("New regexp mode selected (%d): %s", regexp_engine, | |
| 7922 regname[newengine]); | |
| 7923 #endif | |
| 7924 } | |
| 7925 else | |
| 7926 { | |
| 7927 EMSG(_("E864: \\%#= can only be followed by 0, 1, or 2. The automatic engine will be used ")); | |
| 7928 regexp_engine = AUTOMATIC_ENGINE; | |
| 7929 } | |
| 7930 } | |
| 7931 #ifdef DEBUG | |
| 7932 bt_regengine.expr = expr; | |
| 7933 nfa_regengine.expr = expr; | |
| 7934 #endif | |
| 7935 | |
| 7936 /* | |
| 7937 * First try the NFA engine, unless backtracking was requested. | |
| 7938 */ | |
| 7939 if (regexp_engine != BACKTRACKING_ENGINE) | |
| 7940 prog = nfa_regengine.regcomp(expr, re_flags); | |
| 7941 else | |
| 7942 prog = bt_regengine.regcomp(expr, re_flags); | |
| 7943 | |
| 7944 if (prog == NULL) /* error compiling regexp with initial engine */ | |
| 7945 { | |
| 4460 | 7946 #ifdef BT_REGEXP_DEBUG_LOG |
| 4444 | 7947 if (regexp_engine != BACKTRACKING_ENGINE) /* debugging log for NFA */ |
| 7948 { | |
| 7949 FILE *f; | |
| 4460 | 7950 f = fopen(BT_REGEXP_DEBUG_LOG_NAME, "a"); |
| 4444 | 7951 if (f) |
| 7952 { | |
| 7953 if (!syntax_error) | |
| 7954 fprintf(f, "NFA engine could not handle \"%s\"\n", expr); | |
| 7955 else | |
| 7956 fprintf(f, "Syntax error in \"%s\"\n", expr); | |
| 7957 fclose(f); | |
| 7958 } | |
| 7959 else | |
| 4460 | 7960 EMSG2("(NFA) Could not open \"%s\" to write !!!", |
| 7961 BT_REGEXP_DEBUG_LOG_NAME); | |
| 4444 | 7962 /* |
| 7963 if (syntax_error) | |
| 7964 EMSG("NFA Regexp: Syntax Error !"); | |
| 7965 */ | |
| 7966 } | |
| 7967 #endif | |
| 7968 /* | |
| 7969 * If NFA engine failed, then revert to the backtracking engine. | |
| 7970 * Except when there was a syntax error, which was properly handled by | |
| 7971 * NFA engine. | |
| 7972 */ | |
| 7973 if (regexp_engine == AUTOMATIC_ENGINE) | |
| 7974 if (!syntax_error) | |
| 7975 prog = bt_regengine.regcomp(expr, re_flags); | |
| 7976 | |
| 7977 } /* endif prog==NULL */ | |
| 7978 | |
| 7979 | |
| 7980 return prog; | |
| 7981 } | |
| 7982 | |
| 7983 /* | |
| 7984 * Match a regexp against a string. | |
| 7985 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
| 7986 * Uses curbuf for line count and 'iskeyword'. | |
| 7987 * | |
| 7988 * Return TRUE if there is a match, FALSE if not. | |
| 7989 */ | |
| 7990 int | |
| 7991 vim_regexec(rmp, line, col) | |
| 7992 regmatch_T *rmp; | |
| 7993 char_u *line; /* string to match against */ | |
| 7994 colnr_T col; /* column to start looking for match */ | |
| 7995 { | |
| 7996 return rmp->regprog->engine->regexec(rmp, line, col); | |
| 7997 } | |
| 7998 | |
| 7999 #if defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) \ | |
| 8000 || defined(FIND_REPLACE_DIALOG) || defined(PROTO) | |
| 8001 /* | |
| 8002 * Like vim_regexec(), but consider a "\n" in "line" to be a line break. | |
| 8003 */ | |
| 8004 int | |
| 8005 vim_regexec_nl(rmp, line, col) | |
| 8006 regmatch_T *rmp; | |
| 8007 char_u *line; | |
| 8008 colnr_T col; | |
| 8009 { | |
| 8010 return rmp->regprog->engine->regexec_nl(rmp, line, col); | |
| 8011 } | |
| 8012 #endif | |
| 8013 | |
| 8014 /* | |
| 8015 * Match a regexp against multiple lines. | |
| 8016 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
| 8017 * Uses curbuf for line count and 'iskeyword'. | |
| 8018 * | |
| 8019 * Return zero if there is no match. Return number of lines contained in the | |
| 8020 * match otherwise. | |
| 8021 */ | |
| 8022 long | |
| 8023 vim_regexec_multi(rmp, win, buf, lnum, col, tm) | |
| 8024 regmmatch_T *rmp; | |
| 8025 win_T *win; /* window in which to search or NULL */ | |
| 8026 buf_T *buf; /* buffer in which to search */ | |
| 8027 linenr_T lnum; /* nr of line to start looking for match */ | |
| 8028 colnr_T col; /* column to start looking for match */ | |
| 8029 proftime_T *tm; /* timeout limit or NULL */ | |
| 8030 { | |
| 8031 return rmp->regprog->engine->regexec_multi(rmp, win, buf, lnum, col, tm); | |
| 8032 } |