Mercurial > vim
annotate src/regexp_nfa.c @ 4667:9e7ef781d494 v7.3.1081
updated for version 7.3.1081
Problem: Compiler warnings on 64-bit Windows.
Solution: Change variable types. (Mike Williams)
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Fri, 31 May 2013 20:49:31 +0200 |
| parents | 0dce3d812e7a |
| children | 2d15582e132f |
| rev | line source |
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| 4444 | 1 /* vi:set ts=8 sts=4 sw=4: |
| 2 * | |
| 3 * NFA regular expression implementation. | |
| 4 * | |
| 5 * This file is included in "regexp.c". | |
| 6 */ | |
| 7 | |
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8 /* |
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9 * Logging of NFA engine. |
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10 * |
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11 * The NFA engine can write four log files: |
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12 * - Error log: Contains NFA engine's fatal errors. |
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13 * - Dump log: Contains compiled NFA state machine's information. |
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14 * - Run log: Contains information of matching procedure. |
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15 * - Debug log: Contains detailed information of matching procedure. Can be |
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16 * disabled by undefining NFA_REGEXP_DEBUG_LOG. |
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17 * The first one can also be used without debug mode. |
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18 * The last three are enabled when compiled as debug mode and individually |
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19 * disabled by commenting them out. |
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20 * The log files can get quite big! |
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21 * Do disable all of this when compiling Vim for debugging, undefine DEBUG in |
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22 * regexp.c |
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23 */ |
| 4444 | 24 #ifdef DEBUG |
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25 # define NFA_REGEXP_ERROR_LOG "nfa_regexp_error.log" |
| 4444 | 26 # define ENABLE_LOG |
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27 # define NFA_REGEXP_DUMP_LOG "nfa_regexp_dump.log" |
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28 # define NFA_REGEXP_RUN_LOG "nfa_regexp_run.log" |
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29 # define NFA_REGEXP_DEBUG_LOG "nfa_regexp_debug.log" |
| 4444 | 30 #endif |
| 31 | |
| 32 /* Upper limit allowed for {m,n} repetitions handled by NFA */ | |
| 33 #define NFA_BRACES_MAXLIMIT 10 | |
| 34 /* For allocating space for the postfix representation */ | |
| 35 #define NFA_POSTFIX_MULTIPLIER (NFA_BRACES_MAXLIMIT + 2)*2 | |
| 36 | |
| 37 enum | |
| 38 { | |
| 39 NFA_SPLIT = -1024, | |
| 40 NFA_MATCH, | |
| 41 NFA_SKIP_CHAR, /* matches a 0-length char */ | |
| 42 NFA_END_NEG_RANGE, /* Used when expanding [^ab] */ | |
| 43 | |
| 44 NFA_CONCAT, | |
| 45 NFA_OR, | |
| 46 NFA_STAR, | |
| 47 NFA_PLUS, | |
| 48 NFA_QUEST, | |
| 49 NFA_QUEST_NONGREEDY, /* Non-greedy version of \? */ | |
| 50 NFA_NOT, /* used for [^ab] negated char ranges */ | |
| 51 | |
| 52 NFA_BOL, /* ^ Begin line */ | |
| 53 NFA_EOL, /* $ End line */ | |
| 54 NFA_BOW, /* \< Begin word */ | |
| 55 NFA_EOW, /* \> End word */ | |
| 56 NFA_BOF, /* \%^ Begin file */ | |
| 57 NFA_EOF, /* \%$ End file */ | |
| 58 NFA_NEWL, | |
| 59 NFA_ZSTART, /* Used for \zs */ | |
| 60 NFA_ZEND, /* Used for \ze */ | |
| 61 NFA_NOPEN, /* Start of subexpression marked with \%( */ | |
| 62 NFA_NCLOSE, /* End of subexpr. marked with \%( ... \) */ | |
| 63 NFA_START_INVISIBLE, | |
| 64 NFA_END_INVISIBLE, | |
| 65 NFA_COMPOSING, /* Next nodes in NFA are part of the | |
| 66 composing multibyte char */ | |
| 67 NFA_END_COMPOSING, /* End of a composing char in the NFA */ | |
| 68 | |
| 69 /* The following are used only in the postfix form, not in the NFA */ | |
| 70 NFA_PREV_ATOM_NO_WIDTH, /* Used for \@= */ | |
| 71 NFA_PREV_ATOM_NO_WIDTH_NEG, /* Used for \@! */ | |
| 72 NFA_PREV_ATOM_JUST_BEFORE, /* Used for \@<= */ | |
| 73 NFA_PREV_ATOM_JUST_BEFORE_NEG, /* Used for \@<! */ | |
| 74 NFA_PREV_ATOM_LIKE_PATTERN, /* Used for \@> */ | |
| 75 | |
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76 NFA_BACKREF1, /* \1 */ |
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77 NFA_BACKREF2, /* \2 */ |
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78 NFA_BACKREF3, /* \3 */ |
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79 NFA_BACKREF4, /* \4 */ |
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80 NFA_BACKREF5, /* \5 */ |
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81 NFA_BACKREF6, /* \6 */ |
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82 NFA_BACKREF7, /* \7 */ |
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83 NFA_BACKREF8, /* \8 */ |
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84 NFA_BACKREF9, /* \9 */ |
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85 NFA_SKIP, /* Skip characters */ |
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86 |
| 4444 | 87 NFA_MOPEN, |
| 88 NFA_MCLOSE = NFA_MOPEN + NSUBEXP, | |
| 89 | |
| 90 /* NFA_FIRST_NL */ | |
| 91 NFA_ANY = NFA_MCLOSE + NSUBEXP, /* Match any one character. */ | |
| 92 NFA_ANYOF, /* Match any character in this string. */ | |
| 93 NFA_ANYBUT, /* Match any character not in this string. */ | |
| 94 NFA_IDENT, /* Match identifier char */ | |
| 95 NFA_SIDENT, /* Match identifier char but no digit */ | |
| 96 NFA_KWORD, /* Match keyword char */ | |
| 97 NFA_SKWORD, /* Match word char but no digit */ | |
| 98 NFA_FNAME, /* Match file name char */ | |
| 99 NFA_SFNAME, /* Match file name char but no digit */ | |
| 100 NFA_PRINT, /* Match printable char */ | |
| 101 NFA_SPRINT, /* Match printable char but no digit */ | |
| 102 NFA_WHITE, /* Match whitespace char */ | |
| 103 NFA_NWHITE, /* Match non-whitespace char */ | |
| 104 NFA_DIGIT, /* Match digit char */ | |
| 105 NFA_NDIGIT, /* Match non-digit char */ | |
| 106 NFA_HEX, /* Match hex char */ | |
| 107 NFA_NHEX, /* Match non-hex char */ | |
| 108 NFA_OCTAL, /* Match octal char */ | |
| 109 NFA_NOCTAL, /* Match non-octal char */ | |
| 110 NFA_WORD, /* Match word char */ | |
| 111 NFA_NWORD, /* Match non-word char */ | |
| 112 NFA_HEAD, /* Match head char */ | |
| 113 NFA_NHEAD, /* Match non-head char */ | |
| 114 NFA_ALPHA, /* Match alpha char */ | |
| 115 NFA_NALPHA, /* Match non-alpha char */ | |
| 116 NFA_LOWER, /* Match lowercase char */ | |
| 117 NFA_NLOWER, /* Match non-lowercase char */ | |
| 118 NFA_UPPER, /* Match uppercase char */ | |
| 119 NFA_NUPPER, /* Match non-uppercase char */ | |
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120 |
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121 NFA_CURSOR, /* Match cursor pos */ |
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122 NFA_LNUM, /* Match line number */ |
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123 NFA_LNUM_GT, /* Match > line number */ |
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124 NFA_LNUM_LT, /* Match < line number */ |
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125 NFA_COL, /* Match cursor column */ |
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126 NFA_COL_GT, /* Match > cursor column */ |
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127 NFA_COL_LT, /* Match < cursor column */ |
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128 NFA_VCOL, /* Match cursor virtual column */ |
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129 NFA_VCOL_GT, /* Match > cursor virtual column */ |
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130 NFA_VCOL_LT, /* Match < cursor virtual column */ |
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131 |
| 4444 | 132 NFA_FIRST_NL = NFA_ANY + ADD_NL, |
| 133 NFA_LAST_NL = NFA_NUPPER + ADD_NL, | |
| 134 | |
| 135 /* Character classes [:alnum:] etc */ | |
| 136 NFA_CLASS_ALNUM, | |
| 137 NFA_CLASS_ALPHA, | |
| 138 NFA_CLASS_BLANK, | |
| 139 NFA_CLASS_CNTRL, | |
| 140 NFA_CLASS_DIGIT, | |
| 141 NFA_CLASS_GRAPH, | |
| 142 NFA_CLASS_LOWER, | |
| 143 NFA_CLASS_PRINT, | |
| 144 NFA_CLASS_PUNCT, | |
| 145 NFA_CLASS_SPACE, | |
| 146 NFA_CLASS_UPPER, | |
| 147 NFA_CLASS_XDIGIT, | |
| 148 NFA_CLASS_TAB, | |
| 149 NFA_CLASS_RETURN, | |
| 150 NFA_CLASS_BACKSPACE, | |
| 151 NFA_CLASS_ESCAPE | |
| 152 }; | |
| 153 | |
| 154 /* Keep in sync with classchars. */ | |
| 155 static int nfa_classcodes[] = { | |
| 156 NFA_ANY, NFA_IDENT, NFA_SIDENT, NFA_KWORD,NFA_SKWORD, | |
| 157 NFA_FNAME, NFA_SFNAME, NFA_PRINT, NFA_SPRINT, | |
| 158 NFA_WHITE, NFA_NWHITE, NFA_DIGIT, NFA_NDIGIT, | |
| 159 NFA_HEX, NFA_NHEX, NFA_OCTAL, NFA_NOCTAL, | |
| 160 NFA_WORD, NFA_NWORD, NFA_HEAD, NFA_NHEAD, | |
| 161 NFA_ALPHA, NFA_NALPHA, NFA_LOWER, NFA_NLOWER, | |
| 162 NFA_UPPER, NFA_NUPPER | |
| 163 }; | |
| 164 | |
| 165 static char_u e_misplaced[] = N_("E866: (NFA regexp) Misplaced %c"); | |
| 166 | |
| 167 /* | |
| 168 * NFA errors can be of 3 types: | |
| 169 * *** NFA runtime errors, when something unknown goes wrong. The NFA fails | |
| 170 * silently and revert the to backtracking engine. | |
| 171 * syntax_error = FALSE; | |
| 172 * *** Regexp syntax errors, when the input regexp is not syntactically correct. | |
| 173 * The NFA engine displays an error message, and nothing else happens. | |
| 174 * syntax_error = TRUE | |
| 175 * *** Unsupported features, when the input regexp uses an operator that is not | |
| 176 * implemented in the NFA. The NFA engine fails silently, and reverts to the | |
| 177 * old backtracking engine. | |
| 178 * syntax_error = FALSE | |
| 179 * "The NFA fails" means that "compiling the regexp with the NFA fails": | |
| 180 * nfa_regcomp() returns FAIL. | |
| 181 */ | |
| 182 static int syntax_error = FALSE; | |
| 183 | |
| 184 /* NFA regexp \ze operator encountered. */ | |
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185 static int nfa_has_zend; |
| 4444 | 186 |
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187 /* NFA regexp \1 .. \9 encountered. */ |
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188 static int nfa_has_backref; |
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189 |
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190 /* Number of sub expressions actually being used during execution. 1 if only |
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191 * the whole match (subexpr 0) is used. */ |
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192 static int nfa_nsubexpr; |
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193 |
| 4444 | 194 static int *post_start; /* holds the postfix form of r.e. */ |
| 195 static int *post_end; | |
| 196 static int *post_ptr; | |
| 197 | |
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198 static int nstate; /* Number of states in the NFA. Also used when |
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199 * executing. */ |
| 4444 | 200 static int istate; /* Index in the state vector, used in new_state() */ |
| 201 | |
| 202 | |
| 203 static int nfa_regcomp_start __ARGS((char_u*expr, int re_flags)); | |
| 204 static int nfa_recognize_char_class __ARGS((char_u *start, char_u *end, int extra_newl)); | |
| 205 static int nfa_emit_equi_class __ARGS((int c, int neg)); | |
| 206 static int nfa_regatom __ARGS((void)); | |
| 207 static int nfa_regpiece __ARGS((void)); | |
| 208 static int nfa_regconcat __ARGS((void)); | |
| 209 static int nfa_regbranch __ARGS((void)); | |
| 210 static int nfa_reg __ARGS((int paren)); | |
| 211 #ifdef DEBUG | |
| 212 static void nfa_set_code __ARGS((int c)); | |
| 213 static void nfa_postfix_dump __ARGS((char_u *expr, int retval)); | |
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214 static void nfa_print_state __ARGS((FILE *debugf, nfa_state_T *state)); |
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215 static void nfa_print_state2 __ARGS((FILE *debugf, nfa_state_T *state, garray_T *indent)); |
| 4444 | 216 static void nfa_dump __ARGS((nfa_regprog_T *prog)); |
| 217 #endif | |
| 218 static int *re2post __ARGS((void)); | |
| 219 static nfa_state_T *new_state __ARGS((int c, nfa_state_T *out, nfa_state_T *out1)); | |
| 220 static nfa_state_T *post2nfa __ARGS((int *postfix, int *end, int nfa_calc_size)); | |
| 221 static int check_char_class __ARGS((int class, int c)); | |
| 222 static void st_error __ARGS((int *postfix, int *end, int *p)); | |
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223 static void nfa_set_neg_listids __ARGS((nfa_state_T *start)); |
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224 static void nfa_set_null_listids __ARGS((nfa_state_T *start)); |
| 4444 | 225 static void nfa_save_listids __ARGS((nfa_state_T *start, int *list)); |
| 226 static void nfa_restore_listids __ARGS((nfa_state_T *start, int *list)); | |
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227 static int nfa_re_num_cmp __ARGS((long_u val, int op, long_u pos)); |
| 4444 | 228 static long nfa_regtry __ARGS((nfa_state_T *start, colnr_T col)); |
| 229 static long nfa_regexec_both __ARGS((char_u *line, colnr_T col)); | |
| 230 static regprog_T *nfa_regcomp __ARGS((char_u *expr, int re_flags)); | |
| 231 static int nfa_regexec __ARGS((regmatch_T *rmp, char_u *line, colnr_T col)); | |
| 232 static long nfa_regexec_multi __ARGS((regmmatch_T *rmp, win_T *win, buf_T *buf, linenr_T lnum, colnr_T col, proftime_T *tm)); | |
| 233 | |
| 234 /* helper functions used when doing re2post() ... regatom() parsing */ | |
| 235 #define EMIT(c) do { \ | |
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236 if (post_ptr >= post_end && realloc_post_list() == FAIL) \ |
| 4444 | 237 return FAIL; \ |
| 238 *post_ptr++ = c; \ | |
| 239 } while (0) | |
| 240 | |
| 241 /* | |
| 242 * Initialize internal variables before NFA compilation. | |
| 243 * Return OK on success, FAIL otherwise. | |
| 244 */ | |
| 245 static int | |
| 246 nfa_regcomp_start(expr, re_flags) | |
| 247 char_u *expr; | |
| 248 int re_flags; /* see vim_regcomp() */ | |
| 249 { | |
| 4458 | 250 size_t postfix_size; |
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251 int nstate_max; |
| 4444 | 252 |
| 253 nstate = 0; | |
| 254 istate = 0; | |
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255 /* A reasonable estimation for maximum size */ |
| 4458 | 256 nstate_max = (int)(STRLEN(expr) + 1) * NFA_POSTFIX_MULTIPLIER; |
| 4444 | 257 |
| 4454 | 258 /* Some items blow up in size, such as [A-z]. Add more space for that. |
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259 * When it is still not enough realloc_post_list() will be used. */ |
| 4458 | 260 nstate_max += 1000; |
| 4454 | 261 |
| 262 /* Size for postfix representation of expr. */ | |
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263 postfix_size = sizeof(int) * nstate_max; |
| 4454 | 264 |
| 4444 | 265 post_start = (int *)lalloc(postfix_size, TRUE); |
| 266 if (post_start == NULL) | |
| 267 return FAIL; | |
| 268 vim_memset(post_start, 0, postfix_size); | |
| 269 post_ptr = post_start; | |
| 4454 | 270 post_end = post_start + nstate_max; |
| 4444 | 271 nfa_has_zend = FALSE; |
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272 nfa_has_backref = FALSE; |
| 4444 | 273 |
| 274 regcomp_start(expr, re_flags); | |
| 275 | |
| 276 return OK; | |
| 277 } | |
| 278 | |
| 279 /* | |
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280 * Allocate more space for post_start. Called when |
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281 * running above the estimated number of states. |
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282 */ |
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283 static int |
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284 realloc_post_list() |
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285 { |
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286 int nstate_max = (int)(post_end - post_start); |
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287 int new_max = nstate_max + 1000; |
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288 int *new_start; |
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289 int *old_start; |
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290 |
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291 new_start = (int *)lalloc(new_max * sizeof(int), TRUE); |
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292 if (new_start == NULL) |
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293 return FAIL; |
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294 mch_memmove(new_start, post_start, nstate_max * sizeof(int)); |
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295 vim_memset(new_start + nstate_max, 0, 1000 * sizeof(int)); |
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296 old_start = post_start; |
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297 post_start = new_start; |
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298 post_ptr = new_start + (post_ptr - old_start); |
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299 post_end = post_start + new_max; |
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300 vim_free(old_start); |
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301 return OK; |
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302 } |
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303 |
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304 /* |
| 4444 | 305 * Search between "start" and "end" and try to recognize a |
| 306 * character class in expanded form. For example [0-9]. | |
| 307 * On success, return the id the character class to be emitted. | |
| 308 * On failure, return 0 (=FAIL) | |
| 309 * Start points to the first char of the range, while end should point | |
| 310 * to the closing brace. | |
| 311 */ | |
| 312 static int | |
| 313 nfa_recognize_char_class(start, end, extra_newl) | |
| 314 char_u *start; | |
| 315 char_u *end; | |
| 316 int extra_newl; | |
| 317 { | |
| 318 int i; | |
| 319 /* Each of these variables takes up a char in "config[]", | |
| 320 * in the order they are here. */ | |
| 321 int not = FALSE, af = FALSE, AF = FALSE, az = FALSE, AZ = FALSE, | |
| 322 o7 = FALSE, o9 = FALSE, underscore = FALSE, newl = FALSE; | |
| 323 char_u *p; | |
| 324 #define NCONFIGS 16 | |
| 325 int classid[NCONFIGS] = { | |
| 326 NFA_DIGIT, NFA_NDIGIT, NFA_HEX, NFA_NHEX, | |
| 327 NFA_OCTAL, NFA_NOCTAL, NFA_WORD, NFA_NWORD, | |
| 328 NFA_HEAD, NFA_NHEAD, NFA_ALPHA, NFA_NALPHA, | |
| 329 NFA_LOWER, NFA_NLOWER, NFA_UPPER, NFA_NUPPER | |
| 330 }; | |
| 4450 | 331 char_u myconfig[10]; |
| 4444 | 332 char_u config[NCONFIGS][9] = { |
| 333 "000000100", /* digit */ | |
| 334 "100000100", /* non digit */ | |
| 335 "011000100", /* hex-digit */ | |
| 336 "111000100", /* non hex-digit */ | |
| 337 "000001000", /* octal-digit */ | |
| 338 "100001000", /* [^0-7] */ | |
| 339 "000110110", /* [0-9A-Za-z_] */ | |
| 340 "100110110", /* [^0-9A-Za-z_] */ | |
| 341 "000110010", /* head of word */ | |
| 342 "100110010", /* not head of word */ | |
| 343 "000110000", /* alphabetic char a-z */ | |
| 344 "100110000", /* non alphabetic char */ | |
| 345 "000100000", /* lowercase letter */ | |
| 346 "100100000", /* non lowercase */ | |
| 347 "000010000", /* uppercase */ | |
| 348 "100010000" /* non uppercase */ | |
| 349 }; | |
| 350 | |
| 351 if (extra_newl == TRUE) | |
| 352 newl = TRUE; | |
| 353 | |
| 354 if (*end != ']') | |
| 355 return FAIL; | |
| 356 p = start; | |
| 357 if (*p == '^') | |
| 358 { | |
| 359 not = TRUE; | |
| 360 p ++; | |
| 361 } | |
| 362 | |
| 363 while (p < end) | |
| 364 { | |
| 365 if (p + 2 < end && *(p + 1) == '-') | |
| 366 { | |
| 367 switch (*p) | |
| 368 { | |
| 369 case '0': | |
| 370 if (*(p + 2) == '9') | |
| 371 { | |
| 372 o9 = TRUE; | |
| 373 break; | |
| 374 } | |
| 375 else | |
| 376 if (*(p + 2) == '7') | |
| 377 { | |
| 378 o7 = TRUE; | |
| 379 break; | |
| 380 } | |
| 381 case 'a': | |
| 382 if (*(p + 2) == 'z') | |
| 383 { | |
| 384 az = TRUE; | |
| 385 break; | |
| 386 } | |
| 387 else | |
| 388 if (*(p + 2) == 'f') | |
| 389 { | |
| 390 af = TRUE; | |
| 391 break; | |
| 392 } | |
| 393 case 'A': | |
| 394 if (*(p + 2) == 'Z') | |
| 395 { | |
| 396 AZ = TRUE; | |
| 397 break; | |
| 398 } | |
| 399 else | |
| 400 if (*(p + 2) == 'F') | |
| 401 { | |
| 402 AF = TRUE; | |
| 403 break; | |
| 404 } | |
| 405 /* FALLTHROUGH */ | |
| 406 default: | |
| 407 return FAIL; | |
| 408 } | |
| 409 p += 3; | |
| 410 } | |
| 411 else if (p + 1 < end && *p == '\\' && *(p + 1) == 'n') | |
| 412 { | |
| 413 newl = TRUE; | |
| 414 p += 2; | |
| 415 } | |
| 416 else if (*p == '_') | |
| 417 { | |
| 418 underscore = TRUE; | |
| 419 p ++; | |
| 420 } | |
| 421 else if (*p == '\n') | |
| 422 { | |
| 423 newl = TRUE; | |
| 424 p ++; | |
| 425 } | |
| 426 else | |
| 427 return FAIL; | |
| 428 } /* while (p < end) */ | |
| 429 | |
| 430 if (p != end) | |
| 431 return FAIL; | |
| 432 | |
| 433 /* build the config that represents the ranges we gathered */ | |
| 434 STRCPY(myconfig, "000000000"); | |
| 435 if (not == TRUE) | |
| 436 myconfig[0] = '1'; | |
| 437 if (af == TRUE) | |
| 438 myconfig[1] = '1'; | |
| 439 if (AF == TRUE) | |
| 440 myconfig[2] = '1'; | |
| 441 if (az == TRUE) | |
| 442 myconfig[3] = '1'; | |
| 443 if (AZ == TRUE) | |
| 444 myconfig[4] = '1'; | |
| 445 if (o7 == TRUE) | |
| 446 myconfig[5] = '1'; | |
| 447 if (o9 == TRUE) | |
| 448 myconfig[6] = '1'; | |
| 449 if (underscore == TRUE) | |
| 450 myconfig[7] = '1'; | |
| 451 if (newl == TRUE) | |
| 452 { | |
| 453 myconfig[8] = '1'; | |
| 454 extra_newl = ADD_NL; | |
| 455 } | |
| 456 /* try to recognize character classes */ | |
| 457 for (i = 0; i < NCONFIGS; i++) | |
| 4450 | 458 if (STRNCMP(myconfig, config[i], 8) == 0) |
| 4444 | 459 return classid[i] + extra_newl; |
| 460 | |
| 461 /* fallthrough => no success so far */ | |
| 462 return FAIL; | |
| 463 | |
| 464 #undef NCONFIGS | |
| 465 } | |
| 466 | |
| 467 /* | |
| 468 * Produce the bytes for equivalence class "c". | |
| 469 * Currently only handles latin1, latin9 and utf-8. | |
| 470 * Emits bytes in postfix notation: 'a,b,NFA_OR,c,NFA_OR' is | |
| 471 * equivalent to 'a OR b OR c' | |
| 472 * | |
| 473 * NOTE! When changing this function, also update reg_equi_class() | |
| 474 */ | |
| 475 static int | |
| 476 nfa_emit_equi_class(c, neg) | |
| 477 int c; | |
| 478 int neg; | |
| 479 { | |
| 480 int first = TRUE; | |
| 481 int glue = neg == TRUE ? NFA_CONCAT : NFA_OR; | |
| 482 #define EMIT2(c) \ | |
| 483 EMIT(c); \ | |
| 484 if (neg == TRUE) { \ | |
| 485 EMIT(NFA_NOT); \ | |
| 486 } \ | |
| 487 if (first == FALSE) \ | |
| 488 EMIT(glue); \ | |
| 489 else \ | |
| 490 first = FALSE; \ | |
| 491 | |
| 492 #ifdef FEAT_MBYTE | |
| 493 if (enc_utf8 || STRCMP(p_enc, "latin1") == 0 | |
| 494 || STRCMP(p_enc, "iso-8859-15") == 0) | |
| 495 #endif | |
| 496 { | |
| 497 switch (c) | |
| 498 { | |
| 499 case 'A': case '\300': case '\301': case '\302': | |
| 500 case '\303': case '\304': case '\305': | |
| 501 EMIT2('A'); EMIT2('\300'); EMIT2('\301'); | |
| 502 EMIT2('\302'); EMIT2('\303'); EMIT2('\304'); | |
| 503 EMIT2('\305'); | |
| 504 return OK; | |
| 505 | |
| 506 case 'C': case '\307': | |
| 507 EMIT2('C'); EMIT2('\307'); | |
| 508 return OK; | |
| 509 | |
| 510 case 'E': case '\310': case '\311': case '\312': case '\313': | |
| 511 EMIT2('E'); EMIT2('\310'); EMIT2('\311'); | |
| 512 EMIT2('\312'); EMIT2('\313'); | |
| 513 return OK; | |
| 514 | |
| 515 case 'I': case '\314': case '\315': case '\316': case '\317': | |
| 516 EMIT2('I'); EMIT2('\314'); EMIT2('\315'); | |
| 517 EMIT2('\316'); EMIT2('\317'); | |
| 518 return OK; | |
| 519 | |
| 520 case 'N': case '\321': | |
| 521 EMIT2('N'); EMIT2('\321'); | |
| 522 return OK; | |
| 523 | |
| 524 case 'O': case '\322': case '\323': case '\324': case '\325': | |
| 525 case '\326': | |
| 526 EMIT2('O'); EMIT2('\322'); EMIT2('\323'); | |
| 527 EMIT2('\324'); EMIT2('\325'); EMIT2('\326'); | |
| 528 return OK; | |
| 529 | |
| 530 case 'U': case '\331': case '\332': case '\333': case '\334': | |
| 531 EMIT2('U'); EMIT2('\331'); EMIT2('\332'); | |
| 532 EMIT2('\333'); EMIT2('\334'); | |
| 533 return OK; | |
| 534 | |
| 535 case 'Y': case '\335': | |
| 536 EMIT2('Y'); EMIT2('\335'); | |
| 537 return OK; | |
| 538 | |
| 539 case 'a': case '\340': case '\341': case '\342': | |
| 540 case '\343': case '\344': case '\345': | |
| 541 EMIT2('a'); EMIT2('\340'); EMIT2('\341'); | |
| 542 EMIT2('\342'); EMIT2('\343'); EMIT2('\344'); | |
| 543 EMIT2('\345'); | |
| 544 return OK; | |
| 545 | |
| 546 case 'c': case '\347': | |
| 547 EMIT2('c'); EMIT2('\347'); | |
| 548 return OK; | |
| 549 | |
| 550 case 'e': case '\350': case '\351': case '\352': case '\353': | |
| 551 EMIT2('e'); EMIT2('\350'); EMIT2('\351'); | |
| 552 EMIT2('\352'); EMIT2('\353'); | |
| 553 return OK; | |
| 554 | |
| 555 case 'i': case '\354': case '\355': case '\356': case '\357': | |
| 556 EMIT2('i'); EMIT2('\354'); EMIT2('\355'); | |
| 557 EMIT2('\356'); EMIT2('\357'); | |
| 558 return OK; | |
| 559 | |
| 560 case 'n': case '\361': | |
| 561 EMIT2('n'); EMIT2('\361'); | |
| 562 return OK; | |
| 563 | |
| 564 case 'o': case '\362': case '\363': case '\364': case '\365': | |
| 565 case '\366': | |
| 566 EMIT2('o'); EMIT2('\362'); EMIT2('\363'); | |
| 567 EMIT2('\364'); EMIT2('\365'); EMIT2('\366'); | |
| 568 return OK; | |
| 569 | |
| 570 case 'u': case '\371': case '\372': case '\373': case '\374': | |
| 571 EMIT2('u'); EMIT2('\371'); EMIT2('\372'); | |
| 572 EMIT2('\373'); EMIT2('\374'); | |
| 573 return OK; | |
| 574 | |
| 575 case 'y': case '\375': case '\377': | |
| 576 EMIT2('y'); EMIT2('\375'); EMIT2('\377'); | |
| 577 return OK; | |
| 578 | |
| 579 default: | |
| 580 return FAIL; | |
| 581 } | |
| 582 } | |
| 583 | |
| 584 EMIT(c); | |
| 585 return OK; | |
| 586 #undef EMIT2 | |
| 587 } | |
| 588 | |
| 589 /* | |
| 590 * Code to parse regular expression. | |
| 591 * | |
| 592 * We try to reuse parsing functions in regexp.c to | |
| 593 * minimize surprise and keep the syntax consistent. | |
| 594 */ | |
| 595 | |
| 596 /* | |
| 597 * Parse the lowest level. | |
| 598 * | |
| 599 * An atom can be one of a long list of items. Many atoms match one character | |
| 600 * in the text. It is often an ordinary character or a character class. | |
| 601 * Braces can be used to make a pattern into an atom. The "\z(\)" construct | |
| 602 * is only for syntax highlighting. | |
| 603 * | |
| 604 * atom ::= ordinary-atom | |
| 605 * or \( pattern \) | |
| 606 * or \%( pattern \) | |
| 607 * or \z( pattern \) | |
| 608 */ | |
| 609 static int | |
| 610 nfa_regatom() | |
| 611 { | |
| 612 int c; | |
| 613 int charclass; | |
| 614 int equiclass; | |
| 615 int collclass; | |
| 616 int got_coll_char; | |
| 617 char_u *p; | |
| 618 char_u *endp; | |
| 619 #ifdef FEAT_MBYTE | |
| 620 char_u *old_regparse = regparse; | |
| 621 #endif | |
| 622 int extra = 0; | |
| 623 int first; | |
| 624 int emit_range; | |
| 625 int negated; | |
| 626 int result; | |
| 627 int startc = -1; | |
| 628 int endc = -1; | |
| 629 int oldstartc = -1; | |
| 630 int cpo_lit; /* 'cpoptions' contains 'l' flag */ | |
| 631 int cpo_bsl; /* 'cpoptions' contains '\' flag */ | |
| 632 int glue; /* ID that will "glue" nodes together */ | |
| 633 | |
| 634 cpo_lit = vim_strchr(p_cpo, CPO_LITERAL) != NULL; | |
| 635 cpo_bsl = vim_strchr(p_cpo, CPO_BACKSL) != NULL; | |
| 636 | |
| 637 c = getchr(); | |
| 638 switch (c) | |
| 639 { | |
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640 case NUL: |
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641 syntax_error = TRUE; |
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642 EMSG_RET_FAIL(_("E865: (NFA) Regexp end encountered prematurely")); |
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643 |
| 4444 | 644 case Magic('^'): |
| 645 EMIT(NFA_BOL); | |
| 646 break; | |
| 647 | |
| 648 case Magic('$'): | |
| 649 EMIT(NFA_EOL); | |
| 650 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 651 had_eol = TRUE; | |
| 652 #endif | |
| 653 break; | |
| 654 | |
| 655 case Magic('<'): | |
| 656 EMIT(NFA_BOW); | |
| 657 break; | |
| 658 | |
| 659 case Magic('>'): | |
| 660 EMIT(NFA_EOW); | |
| 661 break; | |
| 662 | |
| 663 case Magic('_'): | |
| 664 c = no_Magic(getchr()); | |
| 665 if (c == '^') /* "\_^" is start-of-line */ | |
| 666 { | |
| 667 EMIT(NFA_BOL); | |
| 668 break; | |
| 669 } | |
| 670 if (c == '$') /* "\_$" is end-of-line */ | |
| 671 { | |
| 672 EMIT(NFA_EOL); | |
| 673 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 674 had_eol = TRUE; | |
| 675 #endif | |
| 676 break; | |
| 677 } | |
| 678 | |
| 679 extra = ADD_NL; | |
| 680 | |
| 681 /* "\_[" is collection plus newline */ | |
| 682 if (c == '[') | |
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683 goto collection; |
| 4444 | 684 |
| 685 /* "\_x" is character class plus newline */ | |
| 686 /*FALLTHROUGH*/ | |
| 687 | |
| 688 /* | |
| 689 * Character classes. | |
| 690 */ | |
| 691 case Magic('.'): | |
| 692 case Magic('i'): | |
| 693 case Magic('I'): | |
| 694 case Magic('k'): | |
| 695 case Magic('K'): | |
| 696 case Magic('f'): | |
| 697 case Magic('F'): | |
| 698 case Magic('p'): | |
| 699 case Magic('P'): | |
| 700 case Magic('s'): | |
| 701 case Magic('S'): | |
| 702 case Magic('d'): | |
| 703 case Magic('D'): | |
| 704 case Magic('x'): | |
| 705 case Magic('X'): | |
| 706 case Magic('o'): | |
| 707 case Magic('O'): | |
| 708 case Magic('w'): | |
| 709 case Magic('W'): | |
| 710 case Magic('h'): | |
| 711 case Magic('H'): | |
| 712 case Magic('a'): | |
| 713 case Magic('A'): | |
| 714 case Magic('l'): | |
| 715 case Magic('L'): | |
| 716 case Magic('u'): | |
| 717 case Magic('U'): | |
| 718 p = vim_strchr(classchars, no_Magic(c)); | |
| 719 if (p == NULL) | |
| 720 { | |
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721 EMSGN("INTERNAL: Unknown character class char: %ld", c); |
|
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updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
722 return FAIL; |
| 4444 | 723 } |
| 724 #ifdef FEAT_MBYTE | |
| 725 /* When '.' is followed by a composing char ignore the dot, so that | |
| 726 * the composing char is matched here. */ | |
| 727 if (enc_utf8 && c == Magic('.') && utf_iscomposing(peekchr())) | |
| 728 { | |
|
4535
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
729 old_regparse = regparse; |
| 4444 | 730 c = getchr(); |
| 731 goto nfa_do_multibyte; | |
| 732 } | |
| 733 #endif | |
| 734 EMIT(nfa_classcodes[p - classchars]); | |
| 735 if (extra == ADD_NL) | |
| 736 { | |
| 737 EMIT(NFA_NEWL); | |
| 738 EMIT(NFA_OR); | |
| 739 regflags |= RF_HASNL; | |
| 740 } | |
| 741 break; | |
| 742 | |
| 743 case Magic('n'): | |
| 744 if (reg_string) | |
| 745 /* In a string "\n" matches a newline character. */ | |
| 746 EMIT(NL); | |
| 747 else | |
| 748 { | |
| 749 /* In buffer text "\n" matches the end of a line. */ | |
| 750 EMIT(NFA_NEWL); | |
| 751 regflags |= RF_HASNL; | |
| 752 } | |
| 753 break; | |
| 754 | |
| 755 case Magic('('): | |
| 756 if (nfa_reg(REG_PAREN) == FAIL) | |
| 757 return FAIL; /* cascaded error */ | |
| 758 break; | |
| 759 | |
| 760 case Magic('|'): | |
| 761 case Magic('&'): | |
| 762 case Magic(')'): | |
| 763 syntax_error = TRUE; | |
| 4450 | 764 EMSGN(_(e_misplaced), no_Magic(c)); |
| 4444 | 765 return FAIL; |
| 766 | |
| 767 case Magic('='): | |
| 768 case Magic('?'): | |
| 769 case Magic('+'): | |
| 770 case Magic('@'): | |
| 771 case Magic('*'): | |
| 772 case Magic('{'): | |
| 773 /* these should follow an atom, not form an atom */ | |
| 774 syntax_error = TRUE; | |
| 4450 | 775 EMSGN(_(e_misplaced), no_Magic(c)); |
| 4444 | 776 return FAIL; |
| 777 | |
| 778 case Magic('~'): /* previous substitute pattern */ | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
779 /* TODO: Not supported yet */ |
| 4444 | 780 return FAIL; |
| 781 | |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
782 case Magic('1'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
783 case Magic('2'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
784 case Magic('3'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
785 case Magic('4'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
786 case Magic('5'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
787 case Magic('6'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
788 case Magic('7'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
789 case Magic('8'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
790 case Magic('9'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
791 EMIT(NFA_BACKREF1 + (no_Magic(c) - '1')); |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
792 nfa_has_backref = TRUE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
793 break; |
| 4444 | 794 |
| 795 case Magic('z'): | |
| 796 c = no_Magic(getchr()); | |
| 797 switch (c) | |
| 798 { | |
| 799 case 's': | |
| 800 EMIT(NFA_ZSTART); | |
| 801 break; | |
| 802 case 'e': | |
| 803 EMIT(NFA_ZEND); | |
| 804 nfa_has_zend = TRUE; | |
|
4569
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
805 break; |
| 4444 | 806 case '1': |
| 807 case '2': | |
| 808 case '3': | |
| 809 case '4': | |
| 810 case '5': | |
| 811 case '6': | |
| 812 case '7': | |
| 813 case '8': | |
| 814 case '9': | |
| 815 case '(': | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
816 /* TODO: \z1...\z9 and \z( not yet supported */ |
| 4444 | 817 return FAIL; |
| 818 default: | |
| 819 syntax_error = TRUE; | |
| 4450 | 820 EMSGN(_("E867: (NFA) Unknown operator '\\z%c'"), |
| 4444 | 821 no_Magic(c)); |
| 822 return FAIL; | |
| 823 } | |
| 824 break; | |
| 825 | |
| 826 case Magic('%'): | |
| 827 c = no_Magic(getchr()); | |
| 828 switch (c) | |
| 829 { | |
| 830 /* () without a back reference */ | |
| 831 case '(': | |
| 832 if (nfa_reg(REG_NPAREN) == FAIL) | |
| 833 return FAIL; | |
| 834 EMIT(NFA_NOPEN); | |
| 835 break; | |
| 836 | |
| 837 case 'd': /* %d123 decimal */ | |
| 838 case 'o': /* %o123 octal */ | |
| 839 case 'x': /* %xab hex 2 */ | |
| 840 case 'u': /* %uabcd hex 4 */ | |
| 841 case 'U': /* %U1234abcd hex 8 */ | |
|
4543
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
842 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
843 int nr; |
|
4543
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
844 |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
845 switch (c) |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
846 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
847 case 'd': nr = getdecchrs(); break; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
848 case 'o': nr = getoctchrs(); break; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
849 case 'x': nr = gethexchrs(2); break; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
850 case 'u': nr = gethexchrs(4); break; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
851 case 'U': nr = gethexchrs(8); break; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
852 default: nr = -1; break; |
|
4543
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
853 } |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
854 |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
855 if (nr < 0) |
|
4543
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
856 EMSG2_RET_FAIL( |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
857 _("E678: Invalid character after %s%%[dxouU]"), |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
858 reg_magic == MAGIC_ALL); |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
859 /* TODO: what if a composing character follows? */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
860 EMIT(nr); |
|
4543
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
861 } |
| 4444 | 862 break; |
| 863 | |
| 864 /* Catch \%^ and \%$ regardless of where they appear in the | |
| 865 * pattern -- regardless of whether or not it makes sense. */ | |
| 866 case '^': | |
| 867 EMIT(NFA_BOF); | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
868 /* TODO: Not yet supported */ |
| 4444 | 869 return FAIL; |
| 870 break; | |
| 871 | |
| 872 case '$': | |
| 873 EMIT(NFA_EOF); | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
874 /* TODO: Not yet supported */ |
| 4444 | 875 return FAIL; |
| 876 break; | |
| 877 | |
| 878 case '#': | |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
879 EMIT(NFA_CURSOR); |
| 4444 | 880 break; |
| 881 | |
| 882 case 'V': | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
883 /* TODO: not supported yet */ |
| 4444 | 884 return FAIL; |
| 885 break; | |
| 886 | |
| 887 case '[': | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
888 /* TODO: \%[abc] not supported yet */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
889 return FAIL; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
890 |
| 4444 | 891 default: |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
892 { |
|
4655
779ca415f8e1
updated for version 7.3.1075
Bram Moolenaar <bram@vim.org>
parents:
4651
diff
changeset
|
893 int n = 0; |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
894 int cmp = c; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
895 |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
896 if (c == '<' || c == '>') |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
897 c = getchr(); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
898 while (VIM_ISDIGIT(c)) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
899 { |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
900 n = n * 10 + (c - '0'); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
901 c = getchr(); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
902 } |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
903 if (c == 'l' || c == 'c' || c == 'v') |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
904 { |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
905 EMIT(n); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
906 if (c == 'l') |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
907 EMIT(cmp == '<' ? NFA_LNUM_LT : |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
908 cmp == '>' ? NFA_LNUM_GT : NFA_LNUM); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
909 else if (c == 'c') |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
910 EMIT(cmp == '<' ? NFA_COL_LT : |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
911 cmp == '>' ? NFA_COL_GT : NFA_COL); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
912 else |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
913 EMIT(cmp == '<' ? NFA_VCOL_LT : |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
914 cmp == '>' ? NFA_VCOL_GT : NFA_VCOL); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
915 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
916 } |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
917 else if (c == '\'') |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
918 /* TODO: \%'m not supported yet */ |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
919 return FAIL; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
920 } |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
921 syntax_error = TRUE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
922 EMSGN(_("E867: (NFA) Unknown operator '\\%%%c'"), |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
923 no_Magic(c)); |
| 4444 | 924 return FAIL; |
| 925 } | |
| 926 break; | |
| 927 | |
| 928 case Magic('['): | |
|
4517
9a2183bd8295
updated for version 7.3.1006
Bram Moolenaar <bram@vim.org>
parents:
4515
diff
changeset
|
929 collection: |
| 4444 | 930 /* |
| 931 * Glue is emitted between several atoms from the []. | |
| 932 * It is either NFA_OR, or NFA_CONCAT. | |
| 933 * | |
| 934 * [abc] expands to 'a b NFA_OR c NFA_OR' (in postfix notation) | |
| 935 * [^abc] expands to 'a NFA_NOT b NFA_NOT NFA_CONCAT c NFA_NOT | |
| 936 * NFA_CONCAT NFA_END_NEG_RANGE NFA_CONCAT' (in postfix | |
| 937 * notation) | |
| 938 * | |
| 939 */ | |
| 940 | |
| 941 | |
| 942 /* Emit negation atoms, if needed. | |
| 943 * The CONCAT below merges the NOT with the previous node. */ | |
| 944 #define TRY_NEG() \ | |
| 945 if (negated == TRUE) \ | |
| 946 { \ | |
| 947 EMIT(NFA_NOT); \ | |
| 948 } | |
| 949 | |
| 950 /* Emit glue between important nodes : CONCAT or OR. */ | |
| 951 #define EMIT_GLUE() \ | |
| 952 if (first == FALSE) \ | |
| 953 EMIT(glue); \ | |
| 954 else \ | |
| 955 first = FALSE; | |
| 956 | |
| 957 p = regparse; | |
| 958 endp = skip_anyof(p); | |
| 959 if (*endp == ']') | |
| 960 { | |
| 961 /* | |
| 962 * Try to reverse engineer character classes. For example, | |
| 963 * recognize that [0-9] stands for \d and [A-Za-z_] with \h, | |
| 964 * and perform the necessary substitutions in the NFA. | |
| 965 */ | |
| 966 result = nfa_recognize_char_class(regparse, endp, | |
| 967 extra == ADD_NL); | |
| 968 if (result != FAIL) | |
| 969 { | |
| 970 if (result >= NFA_DIGIT && result <= NFA_NUPPER) | |
| 971 EMIT(result); | |
| 972 else /* must be char class + newline */ | |
| 973 { | |
| 974 EMIT(result - ADD_NL); | |
| 975 EMIT(NFA_NEWL); | |
| 976 EMIT(NFA_OR); | |
| 977 } | |
| 978 regparse = endp; | |
|
4573
37e444aeb33b
updated for version 7.3.1034
Bram Moolenaar <bram@vim.org>
parents:
4571
diff
changeset
|
979 mb_ptr_adv(regparse); |
| 4444 | 980 return OK; |
| 981 } | |
| 982 /* | |
| 983 * Failed to recognize a character class. Use the simple | |
| 984 * version that turns [abc] into 'a' OR 'b' OR 'c' | |
| 985 */ | |
| 986 startc = endc = oldstartc = -1; | |
| 987 first = TRUE; /* Emitting first atom in this sequence? */ | |
| 988 negated = FALSE; | |
| 989 glue = NFA_OR; | |
| 990 if (*regparse == '^') /* negated range */ | |
| 991 { | |
| 992 negated = TRUE; | |
| 993 glue = NFA_CONCAT; | |
|
4573
37e444aeb33b
updated for version 7.3.1034
Bram Moolenaar <bram@vim.org>
parents:
4571
diff
changeset
|
994 mb_ptr_adv(regparse); |
| 4444 | 995 } |
| 996 if (*regparse == '-') | |
| 997 { | |
| 998 startc = '-'; | |
| 999 EMIT(startc); | |
| 1000 TRY_NEG(); | |
| 1001 EMIT_GLUE(); | |
|
4573
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parents:
4571
diff
changeset
|
1002 mb_ptr_adv(regparse); |
| 4444 | 1003 } |
| 1004 /* Emit the OR branches for each character in the [] */ | |
| 1005 emit_range = FALSE; | |
| 1006 while (regparse < endp) | |
| 1007 { | |
| 1008 oldstartc = startc; | |
| 1009 startc = -1; | |
| 1010 got_coll_char = FALSE; | |
| 1011 if (*regparse == '[') | |
| 1012 { | |
| 1013 /* Check for [: :], [= =], [. .] */ | |
| 1014 equiclass = collclass = 0; | |
| 1015 charclass = get_char_class(®parse); | |
| 1016 if (charclass == CLASS_NONE) | |
| 1017 { | |
| 1018 equiclass = get_equi_class(®parse); | |
| 1019 if (equiclass == 0) | |
| 1020 collclass = get_coll_element(®parse); | |
| 1021 } | |
| 1022 | |
| 1023 /* Character class like [:alpha:] */ | |
| 1024 if (charclass != CLASS_NONE) | |
| 1025 { | |
| 1026 switch (charclass) | |
| 1027 { | |
| 1028 case CLASS_ALNUM: | |
| 1029 EMIT(NFA_CLASS_ALNUM); | |
| 1030 break; | |
| 1031 case CLASS_ALPHA: | |
| 1032 EMIT(NFA_CLASS_ALPHA); | |
| 1033 break; | |
| 1034 case CLASS_BLANK: | |
| 1035 EMIT(NFA_CLASS_BLANK); | |
| 1036 break; | |
| 1037 case CLASS_CNTRL: | |
| 1038 EMIT(NFA_CLASS_CNTRL); | |
| 1039 break; | |
| 1040 case CLASS_DIGIT: | |
| 1041 EMIT(NFA_CLASS_DIGIT); | |
| 1042 break; | |
| 1043 case CLASS_GRAPH: | |
| 1044 EMIT(NFA_CLASS_GRAPH); | |
| 1045 break; | |
| 1046 case CLASS_LOWER: | |
| 1047 EMIT(NFA_CLASS_LOWER); | |
| 1048 break; | |
| 1049 case CLASS_PRINT: | |
| 1050 EMIT(NFA_CLASS_PRINT); | |
| 1051 break; | |
| 1052 case CLASS_PUNCT: | |
| 1053 EMIT(NFA_CLASS_PUNCT); | |
| 1054 break; | |
| 1055 case CLASS_SPACE: | |
| 1056 EMIT(NFA_CLASS_SPACE); | |
| 1057 break; | |
| 1058 case CLASS_UPPER: | |
| 1059 EMIT(NFA_CLASS_UPPER); | |
| 1060 break; | |
| 1061 case CLASS_XDIGIT: | |
| 1062 EMIT(NFA_CLASS_XDIGIT); | |
| 1063 break; | |
| 1064 case CLASS_TAB: | |
| 1065 EMIT(NFA_CLASS_TAB); | |
| 1066 break; | |
| 1067 case CLASS_RETURN: | |
| 1068 EMIT(NFA_CLASS_RETURN); | |
| 1069 break; | |
| 1070 case CLASS_BACKSPACE: | |
| 1071 EMIT(NFA_CLASS_BACKSPACE); | |
| 1072 break; | |
| 1073 case CLASS_ESCAPE: | |
| 1074 EMIT(NFA_CLASS_ESCAPE); | |
| 1075 break; | |
| 1076 } | |
| 1077 TRY_NEG(); | |
| 1078 EMIT_GLUE(); | |
| 1079 continue; | |
| 1080 } | |
| 1081 /* Try equivalence class [=a=] and the like */ | |
| 1082 if (equiclass != 0) | |
| 1083 { | |
| 1084 result = nfa_emit_equi_class(equiclass, negated); | |
| 1085 if (result == FAIL) | |
| 1086 { | |
| 1087 /* should never happen */ | |
| 1088 EMSG_RET_FAIL(_("E868: Error building NFA with equivalence class!")); | |
| 1089 } | |
| 1090 EMIT_GLUE(); | |
| 1091 continue; | |
| 1092 } | |
| 1093 /* Try collating class like [. .] */ | |
| 1094 if (collclass != 0) | |
| 1095 { | |
| 1096 startc = collclass; /* allow [.a.]-x as a range */ | |
| 1097 /* Will emit the proper atom at the end of the | |
| 1098 * while loop. */ | |
| 1099 } | |
| 1100 } | |
| 1101 /* Try a range like 'a-x' or '\t-z' */ | |
| 1102 if (*regparse == '-') | |
| 1103 { | |
| 1104 emit_range = TRUE; | |
| 1105 startc = oldstartc; | |
|
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parents:
4571
diff
changeset
|
1106 mb_ptr_adv(regparse); |
| 4444 | 1107 continue; /* reading the end of the range */ |
| 1108 } | |
| 1109 | |
| 1110 /* Now handle simple and escaped characters. | |
| 1111 * Only "\]", "\^", "\]" and "\\" are special in Vi. Vim | |
| 1112 * accepts "\t", "\e", etc., but only when the 'l' flag in | |
| 1113 * 'cpoptions' is not included. | |
| 1114 * Posix doesn't recognize backslash at all. | |
| 1115 */ | |
| 1116 if (*regparse == '\\' | |
| 1117 && !cpo_bsl | |
| 1118 && regparse + 1 <= endp | |
| 1119 && (vim_strchr(REGEXP_INRANGE, regparse[1]) != NULL | |
| 1120 || (!cpo_lit | |
| 1121 && vim_strchr(REGEXP_ABBR, regparse[1]) | |
| 1122 != NULL) | |
| 1123 ) | |
| 1124 ) | |
| 1125 { | |
|
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parents:
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diff
changeset
|
1126 mb_ptr_adv(regparse); |
| 4444 | 1127 |
|
4507
9dbbddb2ed10
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4503
diff
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|
1128 if (*regparse == 'n') |
| 4444 | 1129 startc = reg_string ? NL : NFA_NEWL; |
| 1130 else | |
| 1131 if (*regparse == 'd' | |
| 1132 || *regparse == 'o' | |
| 1133 || *regparse == 'x' | |
| 1134 || *regparse == 'u' | |
| 1135 || *regparse == 'U' | |
| 1136 ) | |
| 1137 { | |
| 1138 /* TODO(RE) This needs more testing */ | |
| 1139 startc = coll_get_char(); | |
| 1140 got_coll_char = TRUE; | |
|
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diff
changeset
|
1141 mb_ptr_back(old_regparse, regparse); |
| 4444 | 1142 } |
| 1143 else | |
| 1144 { | |
| 1145 /* \r,\t,\e,\b */ | |
| 1146 startc = backslash_trans(*regparse); | |
| 1147 } | |
| 1148 } | |
| 1149 | |
| 1150 /* Normal printable char */ | |
| 1151 if (startc == -1) | |
| 1152 #ifdef FEAT_MBYTE | |
| 1153 startc = (*mb_ptr2char)(regparse); | |
| 1154 #else | |
| 1155 startc = *regparse; | |
| 1156 #endif | |
| 1157 | |
| 1158 /* Previous char was '-', so this char is end of range. */ | |
| 1159 if (emit_range) | |
| 1160 { | |
| 1161 endc = startc; startc = oldstartc; | |
| 1162 if (startc > endc) | |
| 1163 EMSG_RET_FAIL(_(e_invrange)); | |
| 1164 #ifdef FEAT_MBYTE | |
| 1165 if (has_mbyte && ((*mb_char2len)(startc) > 1 | |
| 1166 || (*mb_char2len)(endc) > 1)) | |
| 1167 { | |
| 1168 if (endc > startc + 256) | |
| 1169 EMSG_RET_FAIL(_(e_invrange)); | |
| 1170 /* Emit the range. "startc" was already emitted, so | |
| 1171 * skip it. */ | |
| 1172 for (c = startc + 1; c <= endc; c++) | |
| 1173 { | |
|
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diff
changeset
|
1174 EMIT(c); |
| 4444 | 1175 TRY_NEG(); |
| 1176 EMIT_GLUE(); | |
| 1177 } | |
| 1178 emit_range = FALSE; | |
| 1179 } | |
| 1180 else | |
| 1181 #endif | |
| 1182 { | |
| 1183 #ifdef EBCDIC | |
| 1184 int alpha_only = FALSE; | |
| 1185 | |
| 1186 /* for alphabetical range skip the gaps | |
| 1187 * 'i'-'j', 'r'-'s', 'I'-'J' and 'R'-'S'. */ | |
| 1188 if (isalpha(startc) && isalpha(endc)) | |
| 1189 alpha_only = TRUE; | |
| 1190 #endif | |
| 1191 /* Emit the range. "startc" was already emitted, so | |
| 1192 * skip it. */ | |
| 1193 for (c = startc + 1; c <= endc; c++) | |
| 1194 #ifdef EBCDIC | |
| 1195 if (!alpha_only || isalpha(startc)) | |
| 1196 #endif | |
| 1197 { | |
| 1198 EMIT(c); | |
| 1199 TRY_NEG(); | |
| 1200 EMIT_GLUE(); | |
| 1201 } | |
| 1202 emit_range = FALSE; | |
| 1203 } | |
| 1204 } | |
| 1205 else | |
| 1206 { | |
| 1207 /* | |
| 1208 * This char (startc) is not part of a range. Just | |
| 1209 * emit it. | |
| 1210 * | |
| 1211 * Normally, simply emit startc. But if we get char | |
| 1212 * code=0 from a collating char, then replace it with | |
| 1213 * 0x0a. | |
| 1214 * | |
| 1215 * This is needed to completely mimic the behaviour of | |
| 1216 * the backtracking engine. | |
| 1217 */ | |
| 1218 if (got_coll_char == TRUE && startc == 0) | |
| 1219 EMIT(0x0a); | |
| 1220 else | |
|
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diff
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|
1221 EMIT(startc); |
| 4444 | 1222 TRY_NEG(); |
| 1223 EMIT_GLUE(); | |
| 1224 } | |
| 1225 | |
|
4573
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diff
changeset
|
1226 mb_ptr_adv(regparse); |
| 4444 | 1227 } /* while (p < endp) */ |
| 1228 | |
|
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diff
changeset
|
1229 mb_ptr_back(old_regparse, regparse); |
| 4444 | 1230 if (*regparse == '-') /* if last, '-' is just a char */ |
| 1231 { | |
| 1232 EMIT('-'); | |
| 1233 TRY_NEG(); | |
| 1234 EMIT_GLUE(); | |
| 1235 } | |
|
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diff
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|
1236 mb_ptr_adv(regparse); |
| 4444 | 1237 |
| 1238 /* skip the trailing ] */ | |
| 1239 regparse = endp; | |
|
4573
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updated for version 7.3.1034
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diff
changeset
|
1240 mb_ptr_adv(regparse); |
| 4444 | 1241 if (negated == TRUE) |
| 1242 { | |
| 1243 /* Mark end of negated char range */ | |
| 1244 EMIT(NFA_END_NEG_RANGE); | |
| 1245 EMIT(NFA_CONCAT); | |
| 1246 } | |
|
4615
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updated for version 7.3.1055
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parents:
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diff
changeset
|
1247 |
|
5679b8ddd8cc
updated for version 7.3.1055
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diff
changeset
|
1248 /* \_[] also matches \n but it's not negated */ |
|
5679b8ddd8cc
updated for version 7.3.1055
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diff
changeset
|
1249 if (extra == ADD_NL) |
|
5679b8ddd8cc
updated for version 7.3.1055
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|
1250 { |
|
5679b8ddd8cc
updated for version 7.3.1055
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changeset
|
1251 EMIT(reg_string ? NL : NFA_NEWL); |
|
5679b8ddd8cc
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4583
diff
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|
1252 EMIT(NFA_OR); |
|
5679b8ddd8cc
updated for version 7.3.1055
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parents:
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diff
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|
1253 } |
|
5679b8ddd8cc
updated for version 7.3.1055
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|
1254 |
| 4444 | 1255 return OK; |
|
4529
432a6b8c7d93
updated for version 7.3.1012
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parents:
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diff
changeset
|
1256 } /* if exists closing ] */ |
|
432a6b8c7d93
updated for version 7.3.1012
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diff
changeset
|
1257 |
|
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updated for version 7.3.1012
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changeset
|
1258 if (reg_strict) |
| 4444 | 1259 { |
| 1260 syntax_error = TRUE; | |
| 1261 EMSG_RET_FAIL(_(e_missingbracket)); | |
| 1262 } | |
|
4529
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updated for version 7.3.1012
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diff
changeset
|
1263 /* FALLTHROUGH */ |
|
432a6b8c7d93
updated for version 7.3.1012
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diff
changeset
|
1264 |
| 4444 | 1265 default: |
| 1266 { | |
| 1267 #ifdef FEAT_MBYTE | |
| 1268 int plen; | |
| 1269 | |
| 1270 nfa_do_multibyte: | |
|
4543
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updated for version 7.3.1019
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parents:
4541
diff
changeset
|
1271 /* plen is length of current char with composing chars */ |
|
08ac46980953
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4541
diff
changeset
|
1272 if (enc_utf8 && ((*mb_char2len)(c) |
|
08ac46980953
updated for version 7.3.1019
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4541
diff
changeset
|
1273 != (plen = (*mb_ptr2len)(old_regparse)) |
|
08ac46980953
updated for version 7.3.1019
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parents:
4541
diff
changeset
|
1274 || utf_iscomposing(c))) |
| 4444 | 1275 { |
|
4549
849180347ac3
updated for version 7.3.1022
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parents:
4547
diff
changeset
|
1276 int i = 0; |
|
849180347ac3
updated for version 7.3.1022
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diff
changeset
|
1277 |
|
4535
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updated for version 7.3.1015
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parents:
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diff
changeset
|
1278 /* A base character plus composing characters, or just one |
|
45f97c349537
updated for version 7.3.1015
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diff
changeset
|
1279 * or more composing characters. |
|
4527
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updated for version 7.3.1011
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diff
changeset
|
1280 * This requires creating a separate atom as if enclosing |
|
55bcaa1d2749
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parents:
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diff
changeset
|
1281 * the characters in (), where NFA_COMPOSING is the ( and |
|
55bcaa1d2749
updated for version 7.3.1011
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parents:
4525
diff
changeset
|
1282 * NFA_END_COMPOSING is the ). Note that right now we are |
| 4444 | 1283 * building the postfix form, not the NFA itself; |
| 1284 * a composing char could be: a, b, c, NFA_COMPOSING | |
|
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diff
changeset
|
1285 * where 'b' and 'c' are chars with codes > 256. */ |
|
55bcaa1d2749
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diff
changeset
|
1286 for (;;) |
|
55bcaa1d2749
updated for version 7.3.1011
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parents:
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diff
changeset
|
1287 { |
|
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changeset
|
1288 EMIT(c); |
|
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diff
changeset
|
1289 if (i > 0) |
|
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diff
changeset
|
1290 EMIT(NFA_CONCAT); |
|
4529
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updated for version 7.3.1012
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diff
changeset
|
1291 if ((i += utf_char2len(c)) >= plen) |
|
4527
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diff
changeset
|
1292 break; |
|
55bcaa1d2749
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changeset
|
1293 c = utf_ptr2char(old_regparse + i); |
|
55bcaa1d2749
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|
1294 } |
|
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|
1295 EMIT(NFA_COMPOSING); |
| 4444 | 1296 regparse = old_regparse + plen; |
| 1297 } | |
| 1298 else | |
| 1299 #endif | |
| 1300 { | |
| 1301 c = no_Magic(c); | |
| 1302 EMIT(c); | |
| 1303 } | |
| 1304 return OK; | |
| 1305 } | |
| 1306 } | |
| 1307 | |
| 1308 #undef TRY_NEG | |
| 1309 #undef EMIT_GLUE | |
| 1310 | |
| 1311 return OK; | |
| 1312 } | |
| 1313 | |
| 1314 /* | |
| 1315 * Parse something followed by possible [*+=]. | |
| 1316 * | |
| 1317 * A piece is an atom, possibly followed by a multi, an indication of how many | |
| 1318 * times the atom can be matched. Example: "a*" matches any sequence of "a" | |
| 1319 * characters: "", "a", "aa", etc. | |
| 1320 * | |
| 1321 * piece ::= atom | |
| 1322 * or atom multi | |
| 1323 */ | |
| 1324 static int | |
| 1325 nfa_regpiece() | |
| 1326 { | |
| 1327 int i; | |
| 1328 int op; | |
| 1329 int ret; | |
| 1330 long minval, maxval; | |
| 1331 int greedy = TRUE; /* Braces are prefixed with '-' ? */ | |
| 1332 char_u *old_regparse, *new_regparse; | |
| 1333 int c2; | |
|
4651
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diff
changeset
|
1334 int old_post_pos; |
|
f10f63aaec5c
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diff
changeset
|
1335 int my_post_start; |
| 4444 | 1336 int old_regnpar; |
| 1337 int quest; | |
| 1338 | |
| 1339 /* Save the current position in the regexp, so that we can use it if | |
| 1340 * <atom>{m,n} is next. */ | |
| 1341 old_regparse = regparse; | |
| 1342 /* Save current number of open parenthesis, so we can use it if | |
| 1343 * <atom>{m,n} is next */ | |
| 1344 old_regnpar = regnpar; | |
| 1345 /* store current pos in the postfix form, for \{m,n} involving 0s */ | |
|
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diff
changeset
|
1346 my_post_start = (int)(post_ptr - post_start); |
| 4444 | 1347 |
| 1348 ret = nfa_regatom(); | |
| 1349 if (ret == FAIL) | |
| 1350 return FAIL; /* cascaded error */ | |
| 1351 | |
| 1352 op = peekchr(); | |
| 1353 if (re_multi_type(op) == NOT_MULTI) | |
| 1354 return OK; | |
| 1355 | |
| 1356 skipchr(); | |
| 1357 switch (op) | |
| 1358 { | |
| 1359 case Magic('*'): | |
| 1360 EMIT(NFA_STAR); | |
| 1361 break; | |
| 1362 | |
| 1363 case Magic('+'): | |
| 1364 /* | |
| 1365 * Trick: Normally, (a*)\+ would match the whole input "aaa". The | |
| 1366 * first and only submatch would be "aaa". But the backtracking | |
| 1367 * engine interprets the plus as "try matching one more time", and | |
| 1368 * a* matches a second time at the end of the input, the empty | |
| 1369 * string. | |
| 1370 * The submatch will the empty string. | |
| 1371 * | |
| 1372 * In order to be consistent with the old engine, we disable | |
| 1373 * NFA_PLUS, and replace <atom>+ with <atom><atom>* | |
| 1374 */ | |
| 1375 /* EMIT(NFA_PLUS); */ | |
| 1376 regnpar = old_regnpar; | |
| 1377 regparse = old_regparse; | |
| 1378 curchr = -1; | |
| 1379 if (nfa_regatom() == FAIL) | |
| 1380 return FAIL; | |
| 1381 EMIT(NFA_STAR); | |
| 1382 EMIT(NFA_CONCAT); | |
| 1383 skipchr(); /* skip the \+ */ | |
| 1384 break; | |
| 1385 | |
| 1386 case Magic('@'): | |
| 1387 op = no_Magic(getchr()); | |
| 1388 switch(op) | |
| 1389 { | |
| 1390 case '=': | |
| 1391 EMIT(NFA_PREV_ATOM_NO_WIDTH); | |
| 1392 break; | |
|
4661
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1393 case '!': |
|
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1394 EMIT(NFA_PREV_ATOM_NO_WIDTH_NEG); |
|
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|
1395 break; |
|
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1396 case '0': |
|
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1397 case '1': |
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1398 case '2': |
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1399 case '3': |
|
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1400 case '4': |
|
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1401 case '5': |
|
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1402 case '6': |
|
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1403 case '7': |
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1404 case '8': |
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1405 case '9': |
| 4444 | 1406 case '<': |
| 1407 case '>': | |
| 1408 /* Not supported yet */ | |
| 1409 return FAIL; | |
| 1410 default: | |
| 1411 syntax_error = TRUE; | |
| 4450 | 1412 EMSGN(_("E869: (NFA) Unknown operator '\\@%c'"), op); |
| 4444 | 1413 return FAIL; |
| 1414 } | |
| 1415 break; | |
| 1416 | |
| 1417 case Magic('?'): | |
| 1418 case Magic('='): | |
| 1419 EMIT(NFA_QUEST); | |
| 1420 break; | |
| 1421 | |
| 1422 case Magic('{'): | |
| 1423 /* a{2,5} will expand to 'aaa?a?a?' | |
| 1424 * a{-1,3} will expand to 'aa??a??', where ?? is the nongreedy | |
| 1425 * version of '?' | |
| 1426 * \v(ab){2,3} will expand to '(ab)(ab)(ab)?', where all the | |
| 1427 * parenthesis have the same id | |
| 1428 */ | |
| 1429 | |
| 1430 greedy = TRUE; | |
| 1431 c2 = peekchr(); | |
| 1432 if (c2 == '-' || c2 == Magic('-')) | |
| 1433 { | |
| 1434 skipchr(); | |
| 1435 greedy = FALSE; | |
| 1436 } | |
| 1437 if (!read_limits(&minval, &maxval)) | |
| 1438 { | |
| 1439 syntax_error = TRUE; | |
| 1440 EMSG_RET_FAIL(_("E870: (NFA regexp) Error reading repetition limits")); | |
| 1441 } | |
| 1442 /* <atom>{0,inf}, <atom>{0,} and <atom>{} are equivalent to | |
| 1443 * <atom>* */ | |
| 1444 if (minval == 0 && maxval == MAX_LIMIT && greedy) | |
| 1445 { | |
| 1446 EMIT(NFA_STAR); | |
| 1447 break; | |
| 1448 } | |
| 1449 | |
| 1450 if (maxval > NFA_BRACES_MAXLIMIT) | |
| 1451 { | |
| 1452 /* This would yield a huge automaton and use too much memory. | |
| 1453 * Revert to old engine */ | |
| 1454 return FAIL; | |
| 1455 } | |
| 1456 | |
| 1457 /* Special case: x{0} or x{-0} */ | |
| 1458 if (maxval == 0) | |
| 1459 { | |
| 1460 /* Ignore result of previous call to nfa_regatom() */ | |
|
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|
1461 post_ptr = post_start + my_post_start; |
| 4444 | 1462 /* NFA_SKIP_CHAR has 0-length and works everywhere */ |
| 1463 EMIT(NFA_SKIP_CHAR); | |
| 1464 return OK; | |
| 1465 } | |
| 1466 | |
| 1467 /* Ignore previous call to nfa_regatom() */ | |
|
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|
1468 post_ptr = post_start + my_post_start; |
| 4444 | 1469 /* Save pos after the repeated atom and the \{} */ |
| 1470 new_regparse = regparse; | |
| 1471 | |
| 1472 quest = (greedy == TRUE? NFA_QUEST : NFA_QUEST_NONGREEDY); | |
| 1473 for (i = 0; i < maxval; i++) | |
| 1474 { | |
| 1475 /* Goto beginning of the repeated atom */ | |
| 1476 regparse = old_regparse; | |
| 1477 curchr = -1; | |
| 1478 /* Restore count of parenthesis */ | |
| 1479 regnpar = old_regnpar; | |
|
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|
1480 old_post_pos = (int)(post_ptr - post_start); |
| 4444 | 1481 if (nfa_regatom() == FAIL) |
| 1482 return FAIL; | |
| 1483 /* after "minval" times, atoms are optional */ | |
| 1484 if (i + 1 > minval) | |
| 1485 EMIT(quest); | |
|
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|
1486 if (old_post_pos != my_post_start) |
| 4444 | 1487 EMIT(NFA_CONCAT); |
| 1488 } | |
| 1489 | |
| 1490 /* Go to just after the repeated atom and the \{} */ | |
| 1491 regparse = new_regparse; | |
| 1492 curchr = -1; | |
| 1493 | |
| 1494 break; | |
| 1495 | |
| 1496 | |
| 1497 default: | |
| 1498 break; | |
| 1499 } /* end switch */ | |
| 1500 | |
| 1501 if (re_multi_type(peekchr()) != NOT_MULTI) | |
| 1502 { | |
| 1503 /* Can't have a multi follow a multi. */ | |
| 1504 syntax_error = TRUE; | |
| 1505 EMSG_RET_FAIL(_("E871: (NFA regexp) Can't have a multi follow a multi !")); | |
| 1506 } | |
| 1507 | |
| 1508 return OK; | |
| 1509 } | |
| 1510 | |
| 1511 /* | |
| 1512 * Parse one or more pieces, concatenated. It matches a match for the | |
| 1513 * first piece, followed by a match for the second piece, etc. Example: | |
| 1514 * "f[0-9]b", first matches "f", then a digit and then "b". | |
| 1515 * | |
| 1516 * concat ::= piece | |
| 1517 * or piece piece | |
| 1518 * or piece piece piece | |
| 1519 * etc. | |
| 1520 */ | |
| 1521 static int | |
| 1522 nfa_regconcat() | |
| 1523 { | |
| 1524 int cont = TRUE; | |
| 1525 int first = TRUE; | |
| 1526 | |
| 1527 while (cont) | |
| 1528 { | |
| 1529 switch (peekchr()) | |
| 1530 { | |
| 1531 case NUL: | |
| 1532 case Magic('|'): | |
| 1533 case Magic('&'): | |
| 1534 case Magic(')'): | |
| 1535 cont = FALSE; | |
| 1536 break; | |
| 1537 | |
| 1538 case Magic('Z'): | |
| 1539 #ifdef FEAT_MBYTE | |
| 1540 regflags |= RF_ICOMBINE; | |
| 1541 #endif | |
| 1542 skipchr_keepstart(); | |
| 1543 break; | |
| 1544 case Magic('c'): | |
| 1545 regflags |= RF_ICASE; | |
| 1546 skipchr_keepstart(); | |
| 1547 break; | |
| 1548 case Magic('C'): | |
| 1549 regflags |= RF_NOICASE; | |
| 1550 skipchr_keepstart(); | |
| 1551 break; | |
| 1552 case Magic('v'): | |
| 1553 reg_magic = MAGIC_ALL; | |
| 1554 skipchr_keepstart(); | |
| 1555 curchr = -1; | |
| 1556 break; | |
| 1557 case Magic('m'): | |
| 1558 reg_magic = MAGIC_ON; | |
| 1559 skipchr_keepstart(); | |
| 1560 curchr = -1; | |
| 1561 break; | |
| 1562 case Magic('M'): | |
| 1563 reg_magic = MAGIC_OFF; | |
| 1564 skipchr_keepstart(); | |
| 1565 curchr = -1; | |
| 1566 break; | |
| 1567 case Magic('V'): | |
| 1568 reg_magic = MAGIC_NONE; | |
| 1569 skipchr_keepstart(); | |
| 1570 curchr = -1; | |
| 1571 break; | |
| 1572 | |
| 1573 default: | |
| 1574 if (nfa_regpiece() == FAIL) | |
| 1575 return FAIL; | |
| 1576 if (first == FALSE) | |
| 1577 EMIT(NFA_CONCAT); | |
| 1578 else | |
| 1579 first = FALSE; | |
| 1580 break; | |
| 1581 } | |
| 1582 } | |
| 1583 | |
| 1584 return OK; | |
| 1585 } | |
| 1586 | |
| 1587 /* | |
| 1588 * Parse a branch, one or more concats, separated by "\&". It matches the | |
| 1589 * last concat, but only if all the preceding concats also match at the same | |
| 1590 * position. Examples: | |
| 1591 * "foobeep\&..." matches "foo" in "foobeep". | |
| 1592 * ".*Peter\&.*Bob" matches in a line containing both "Peter" and "Bob" | |
| 1593 * | |
| 1594 * branch ::= concat | |
| 1595 * or concat \& concat | |
| 1596 * or concat \& concat \& concat | |
| 1597 * etc. | |
| 1598 */ | |
| 1599 static int | |
| 1600 nfa_regbranch() | |
| 1601 { | |
| 1602 int ch; | |
|
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1603 int old_post_pos; |
|
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1604 |
|
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|
1605 old_post_pos = (int)(post_ptr - post_start); |
| 4444 | 1606 |
| 1607 /* First branch, possibly the only one */ | |
| 1608 if (nfa_regconcat() == FAIL) | |
| 1609 return FAIL; | |
| 1610 | |
| 1611 ch = peekchr(); | |
| 1612 /* Try next concats */ | |
| 1613 while (ch == Magic('&')) | |
| 1614 { | |
| 1615 skipchr(); | |
| 1616 EMIT(NFA_NOPEN); | |
| 1617 EMIT(NFA_PREV_ATOM_NO_WIDTH); | |
|
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|
1618 old_post_pos = (int)(post_ptr - post_start); |
| 4444 | 1619 if (nfa_regconcat() == FAIL) |
| 1620 return FAIL; | |
| 1621 /* if concat is empty, skip a input char. But do emit a node */ | |
|
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|
1622 if (old_post_pos == (int)(post_ptr - post_start)) |
| 4444 | 1623 EMIT(NFA_SKIP_CHAR); |
| 1624 EMIT(NFA_CONCAT); | |
| 1625 ch = peekchr(); | |
| 1626 } | |
| 1627 | |
| 1628 /* Even if a branch is empty, emit one node for it */ | |
|
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|
1629 if (old_post_pos == (int)(post_ptr - post_start)) |
| 4444 | 1630 EMIT(NFA_SKIP_CHAR); |
| 1631 | |
| 1632 return OK; | |
| 1633 } | |
| 1634 | |
| 1635 /* | |
| 1636 * Parse a pattern, one or more branches, separated by "\|". It matches | |
| 1637 * anything that matches one of the branches. Example: "foo\|beep" matches | |
| 1638 * "foo" and matches "beep". If more than one branch matches, the first one | |
| 1639 * is used. | |
| 1640 * | |
| 1641 * pattern ::= branch | |
| 1642 * or branch \| branch | |
| 1643 * or branch \| branch \| branch | |
| 1644 * etc. | |
| 1645 */ | |
| 1646 static int | |
| 1647 nfa_reg(paren) | |
| 1648 int paren; /* REG_NOPAREN, REG_PAREN, REG_NPAREN or REG_ZPAREN */ | |
| 1649 { | |
| 1650 int parno = 0; | |
| 1651 | |
| 1652 #ifdef FEAT_SYN_HL | |
| 1653 #endif | |
| 1654 if (paren == REG_PAREN) | |
| 1655 { | |
| 1656 if (regnpar >= NSUBEXP) /* Too many `(' */ | |
| 1657 { | |
| 1658 syntax_error = TRUE; | |
| 1659 EMSG_RET_FAIL(_("E872: (NFA regexp) Too many '('")); | |
| 1660 } | |
| 1661 parno = regnpar++; | |
| 1662 } | |
| 1663 | |
| 1664 if (nfa_regbranch() == FAIL) | |
| 1665 return FAIL; /* cascaded error */ | |
| 1666 | |
| 1667 while (peekchr() == Magic('|')) | |
| 1668 { | |
| 1669 skipchr(); | |
| 1670 if (nfa_regbranch() == FAIL) | |
| 1671 return FAIL; /* cascaded error */ | |
| 1672 EMIT(NFA_OR); | |
| 1673 } | |
| 1674 | |
| 1675 /* Check for proper termination. */ | |
| 1676 if (paren != REG_NOPAREN && getchr() != Magic(')')) | |
| 1677 { | |
| 1678 syntax_error = TRUE; | |
| 1679 if (paren == REG_NPAREN) | |
| 1680 EMSG2_RET_FAIL(_(e_unmatchedpp), reg_magic == MAGIC_ALL); | |
| 1681 else | |
| 1682 EMSG2_RET_FAIL(_(e_unmatchedp), reg_magic == MAGIC_ALL); | |
| 1683 } | |
| 1684 else if (paren == REG_NOPAREN && peekchr() != NUL) | |
| 1685 { | |
| 1686 syntax_error = TRUE; | |
| 1687 if (peekchr() == Magic(')')) | |
| 1688 EMSG2_RET_FAIL(_(e_unmatchedpar), reg_magic == MAGIC_ALL); | |
| 1689 else | |
| 1690 EMSG_RET_FAIL(_("E873: (NFA regexp) proper termination error")); | |
| 1691 } | |
| 1692 /* | |
| 1693 * Here we set the flag allowing back references to this set of | |
| 1694 * parentheses. | |
| 1695 */ | |
| 1696 if (paren == REG_PAREN) | |
| 1697 { | |
| 1698 had_endbrace[parno] = TRUE; /* have seen the close paren */ | |
| 1699 EMIT(NFA_MOPEN + parno); | |
| 1700 } | |
| 1701 | |
| 1702 return OK; | |
| 1703 } | |
| 1704 | |
| 1705 #ifdef DEBUG | |
| 1706 static char_u code[50]; | |
| 1707 | |
| 1708 static void | |
| 1709 nfa_set_code(c) | |
| 1710 int c; | |
| 1711 { | |
| 1712 int addnl = FALSE; | |
| 1713 | |
| 1714 if (c >= NFA_FIRST_NL && c <= NFA_LAST_NL) | |
| 1715 { | |
| 1716 addnl = TRUE; | |
| 1717 c -= ADD_NL; | |
| 1718 } | |
| 1719 | |
| 1720 STRCPY(code, ""); | |
| 1721 switch (c) | |
| 1722 { | |
| 1723 case NFA_MATCH: STRCPY(code, "NFA_MATCH "); break; | |
| 1724 case NFA_SPLIT: STRCPY(code, "NFA_SPLIT "); break; | |
| 1725 case NFA_CONCAT: STRCPY(code, "NFA_CONCAT "); break; | |
| 1726 case NFA_NEWL: STRCPY(code, "NFA_NEWL "); break; | |
| 1727 case NFA_ZSTART: STRCPY(code, "NFA_ZSTART"); break; | |
| 1728 case NFA_ZEND: STRCPY(code, "NFA_ZEND"); break; | |
| 1729 | |
|
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1730 case NFA_BACKREF1: STRCPY(code, "NFA_BACKREF1"); break; |
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1731 case NFA_BACKREF2: STRCPY(code, "NFA_BACKREF2"); break; |
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1732 case NFA_BACKREF3: STRCPY(code, "NFA_BACKREF3"); break; |
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1733 case NFA_BACKREF4: STRCPY(code, "NFA_BACKREF4"); break; |
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1734 case NFA_BACKREF5: STRCPY(code, "NFA_BACKREF5"); break; |
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1735 case NFA_BACKREF6: STRCPY(code, "NFA_BACKREF6"); break; |
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1736 case NFA_BACKREF7: STRCPY(code, "NFA_BACKREF7"); break; |
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1737 case NFA_BACKREF8: STRCPY(code, "NFA_BACKREF8"); break; |
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1738 case NFA_BACKREF9: STRCPY(code, "NFA_BACKREF9"); break; |
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1739 case NFA_SKIP: STRCPY(code, "NFA_SKIP"); break; |
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1740 |
| 4444 | 1741 case NFA_PREV_ATOM_NO_WIDTH: |
| 1742 STRCPY(code, "NFA_PREV_ATOM_NO_WIDTH"); break; | |
|
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1743 case NFA_PREV_ATOM_NO_WIDTH_NEG: |
|
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1744 STRCPY(code, "NFA_PREV_ATOM_NO_WIDTH_NEG"); break; |
|
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1745 case NFA_NOPEN: STRCPY(code, "NFA_NOPEN"); break; |
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1746 case NFA_NCLOSE: STRCPY(code, "NFA_NCLOSE"); break; |
| 4444 | 1747 case NFA_START_INVISIBLE: STRCPY(code, "NFA_START_INVISIBLE"); break; |
| 1748 case NFA_END_INVISIBLE: STRCPY(code, "NFA_END_INVISIBLE"); break; | |
| 1749 | |
| 1750 case NFA_COMPOSING: STRCPY(code, "NFA_COMPOSING"); break; | |
| 1751 case NFA_END_COMPOSING: STRCPY(code, "NFA_END_COMPOSING"); break; | |
| 1752 | |
| 1753 case NFA_MOPEN + 0: | |
| 1754 case NFA_MOPEN + 1: | |
| 1755 case NFA_MOPEN + 2: | |
| 1756 case NFA_MOPEN + 3: | |
| 1757 case NFA_MOPEN + 4: | |
| 1758 case NFA_MOPEN + 5: | |
| 1759 case NFA_MOPEN + 6: | |
| 1760 case NFA_MOPEN + 7: | |
| 1761 case NFA_MOPEN + 8: | |
| 1762 case NFA_MOPEN + 9: | |
| 1763 STRCPY(code, "NFA_MOPEN(x)"); | |
| 1764 code[10] = c - NFA_MOPEN + '0'; | |
| 1765 break; | |
| 1766 case NFA_MCLOSE + 0: | |
| 1767 case NFA_MCLOSE + 1: | |
| 1768 case NFA_MCLOSE + 2: | |
| 1769 case NFA_MCLOSE + 3: | |
| 1770 case NFA_MCLOSE + 4: | |
| 1771 case NFA_MCLOSE + 5: | |
| 1772 case NFA_MCLOSE + 6: | |
| 1773 case NFA_MCLOSE + 7: | |
| 1774 case NFA_MCLOSE + 8: | |
| 1775 case NFA_MCLOSE + 9: | |
| 1776 STRCPY(code, "NFA_MCLOSE(x)"); | |
| 1777 code[11] = c - NFA_MCLOSE + '0'; | |
| 1778 break; | |
| 1779 case NFA_EOL: STRCPY(code, "NFA_EOL "); break; | |
| 1780 case NFA_BOL: STRCPY(code, "NFA_BOL "); break; | |
| 1781 case NFA_EOW: STRCPY(code, "NFA_EOW "); break; | |
| 1782 case NFA_BOW: STRCPY(code, "NFA_BOW "); break; | |
| 1783 case NFA_STAR: STRCPY(code, "NFA_STAR "); break; | |
| 1784 case NFA_PLUS: STRCPY(code, "NFA_PLUS "); break; | |
| 1785 case NFA_NOT: STRCPY(code, "NFA_NOT "); break; | |
| 1786 case NFA_SKIP_CHAR: STRCPY(code, "NFA_SKIP_CHAR"); break; | |
| 1787 case NFA_OR: STRCPY(code, "NFA_OR"); break; | |
| 1788 case NFA_QUEST: STRCPY(code, "NFA_QUEST"); break; | |
| 1789 case NFA_QUEST_NONGREEDY: STRCPY(code, "NFA_QUEST_NON_GREEDY"); break; | |
| 1790 case NFA_END_NEG_RANGE: STRCPY(code, "NFA_END_NEG_RANGE"); break; | |
| 1791 case NFA_CLASS_ALNUM: STRCPY(code, "NFA_CLASS_ALNUM"); break; | |
| 1792 case NFA_CLASS_ALPHA: STRCPY(code, "NFA_CLASS_ALPHA"); break; | |
| 1793 case NFA_CLASS_BLANK: STRCPY(code, "NFA_CLASS_BLANK"); break; | |
| 1794 case NFA_CLASS_CNTRL: STRCPY(code, "NFA_CLASS_CNTRL"); break; | |
| 1795 case NFA_CLASS_DIGIT: STRCPY(code, "NFA_CLASS_DIGIT"); break; | |
| 1796 case NFA_CLASS_GRAPH: STRCPY(code, "NFA_CLASS_GRAPH"); break; | |
| 1797 case NFA_CLASS_LOWER: STRCPY(code, "NFA_CLASS_LOWER"); break; | |
| 1798 case NFA_CLASS_PRINT: STRCPY(code, "NFA_CLASS_PRINT"); break; | |
| 1799 case NFA_CLASS_PUNCT: STRCPY(code, "NFA_CLASS_PUNCT"); break; | |
| 1800 case NFA_CLASS_SPACE: STRCPY(code, "NFA_CLASS_SPACE"); break; | |
| 1801 case NFA_CLASS_UPPER: STRCPY(code, "NFA_CLASS_UPPER"); break; | |
| 1802 case NFA_CLASS_XDIGIT: STRCPY(code, "NFA_CLASS_XDIGIT"); break; | |
| 1803 case NFA_CLASS_TAB: STRCPY(code, "NFA_CLASS_TAB"); break; | |
| 1804 case NFA_CLASS_RETURN: STRCPY(code, "NFA_CLASS_RETURN"); break; | |
| 1805 case NFA_CLASS_BACKSPACE: STRCPY(code, "NFA_CLASS_BACKSPACE"); break; | |
| 1806 case NFA_CLASS_ESCAPE: STRCPY(code, "NFA_CLASS_ESCAPE"); break; | |
| 1807 | |
| 1808 case NFA_ANY: STRCPY(code, "NFA_ANY"); break; | |
| 1809 case NFA_IDENT: STRCPY(code, "NFA_IDENT"); break; | |
| 1810 case NFA_SIDENT:STRCPY(code, "NFA_SIDENT"); break; | |
| 1811 case NFA_KWORD: STRCPY(code, "NFA_KWORD"); break; | |
| 1812 case NFA_SKWORD:STRCPY(code, "NFA_SKWORD"); break; | |
| 1813 case NFA_FNAME: STRCPY(code, "NFA_FNAME"); break; | |
| 1814 case NFA_SFNAME:STRCPY(code, "NFA_SFNAME"); break; | |
| 1815 case NFA_PRINT: STRCPY(code, "NFA_PRINT"); break; | |
| 1816 case NFA_SPRINT:STRCPY(code, "NFA_SPRINT"); break; | |
| 1817 case NFA_WHITE: STRCPY(code, "NFA_WHITE"); break; | |
| 1818 case NFA_NWHITE:STRCPY(code, "NFA_NWHITE"); break; | |
| 1819 case NFA_DIGIT: STRCPY(code, "NFA_DIGIT"); break; | |
| 1820 case NFA_NDIGIT:STRCPY(code, "NFA_NDIGIT"); break; | |
| 1821 case NFA_HEX: STRCPY(code, "NFA_HEX"); break; | |
| 1822 case NFA_NHEX: STRCPY(code, "NFA_NHEX"); break; | |
| 1823 case NFA_OCTAL: STRCPY(code, "NFA_OCTAL"); break; | |
| 1824 case NFA_NOCTAL:STRCPY(code, "NFA_NOCTAL"); break; | |
| 1825 case NFA_WORD: STRCPY(code, "NFA_WORD"); break; | |
| 1826 case NFA_NWORD: STRCPY(code, "NFA_NWORD"); break; | |
| 1827 case NFA_HEAD: STRCPY(code, "NFA_HEAD"); break; | |
| 1828 case NFA_NHEAD: STRCPY(code, "NFA_NHEAD"); break; | |
| 1829 case NFA_ALPHA: STRCPY(code, "NFA_ALPHA"); break; | |
| 1830 case NFA_NALPHA:STRCPY(code, "NFA_NALPHA"); break; | |
| 1831 case NFA_LOWER: STRCPY(code, "NFA_LOWER"); break; | |
| 1832 case NFA_NLOWER:STRCPY(code, "NFA_NLOWER"); break; | |
| 1833 case NFA_UPPER: STRCPY(code, "NFA_UPPER"); break; | |
| 1834 case NFA_NUPPER:STRCPY(code, "NFA_NUPPER"); break; | |
| 1835 | |
| 1836 default: | |
| 1837 STRCPY(code, "CHAR(x)"); | |
| 1838 code[5] = c; | |
| 1839 } | |
| 1840 | |
| 1841 if (addnl == TRUE) | |
| 1842 STRCAT(code, " + NEWLINE "); | |
| 1843 | |
| 1844 } | |
| 1845 | |
| 1846 #ifdef ENABLE_LOG | |
| 1847 static FILE *log_fd; | |
| 1848 | |
| 1849 /* | |
| 1850 * Print the postfix notation of the current regexp. | |
| 1851 */ | |
| 1852 static void | |
| 1853 nfa_postfix_dump(expr, retval) | |
| 1854 char_u *expr; | |
| 1855 int retval; | |
| 1856 { | |
| 1857 int *p; | |
| 1858 FILE *f; | |
| 1859 | |
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1860 f = fopen(NFA_REGEXP_DUMP_LOG, "a"); |
| 4444 | 1861 if (f != NULL) |
| 1862 { | |
| 1863 fprintf(f, "\n-------------------------\n"); | |
| 1864 if (retval == FAIL) | |
| 1865 fprintf(f, ">>> NFA engine failed ... \n"); | |
| 1866 else if (retval == OK) | |
| 1867 fprintf(f, ">>> NFA engine succeeded !\n"); | |
| 1868 fprintf(f, "Regexp: \"%s\"\nPostfix notation (char): \"", expr); | |
| 4464 | 1869 for (p = post_start; *p && p < post_end; p++) |
| 4444 | 1870 { |
| 1871 nfa_set_code(*p); | |
| 1872 fprintf(f, "%s, ", code); | |
| 1873 } | |
| 1874 fprintf(f, "\"\nPostfix notation (int): "); | |
| 4464 | 1875 for (p = post_start; *p && p < post_end; p++) |
| 4444 | 1876 fprintf(f, "%d ", *p); |
| 1877 fprintf(f, "\n\n"); | |
| 1878 fclose(f); | |
| 1879 } | |
| 1880 } | |
| 1881 | |
| 1882 /* | |
| 1883 * Print the NFA starting with a root node "state". | |
| 1884 */ | |
| 1885 static void | |
|
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1886 nfa_print_state(debugf, state) |
| 4444 | 1887 FILE *debugf; |
| 1888 nfa_state_T *state; | |
| 1889 { | |
|
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1890 garray_T indent; |
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1891 |
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1892 ga_init2(&indent, 1, 64); |
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1893 ga_append(&indent, '\0'); |
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1894 nfa_print_state2(debugf, state, &indent); |
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1895 ga_clear(&indent); |
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1896 } |
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1897 |
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1898 static void |
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1899 nfa_print_state2(debugf, state, indent) |
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1900 FILE *debugf; |
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1901 nfa_state_T *state; |
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1902 garray_T *indent; |
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1903 { |
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1904 char_u *p; |
| 4444 | 1905 |
| 1906 if (state == NULL) | |
| 1907 return; | |
| 1908 | |
| 1909 fprintf(debugf, "(%2d)", abs(state->id)); | |
|
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1910 |
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1911 /* Output indent */ |
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1912 p = (char_u *)indent->ga_data; |
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1913 if (indent->ga_len >= 3) |
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1914 { |
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1915 int last = indent->ga_len - 3; |
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1916 char_u save[2]; |
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1917 |
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1918 STRNCPY(save, &p[last], 2); |
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1919 STRNCPY(&p[last], "+-", 2); |
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1920 fprintf(debugf, " %s", p); |
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1921 STRNCPY(&p[last], save, 2); |
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1922 } |
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1923 else |
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1924 fprintf(debugf, " %s", p); |
| 4444 | 1925 |
| 1926 nfa_set_code(state->c); | |
|
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1927 fprintf(debugf, "%s%s (%d) (id=%d)\n", |
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1928 state->negated ? "NOT " : "", code, state->c, abs(state->id)); |
| 4444 | 1929 if (state->id < 0) |
| 1930 return; | |
| 1931 | |
| 1932 state->id = abs(state->id) * -1; | |
|
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1933 |
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1934 /* grow indent for state->out */ |
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1935 indent->ga_len -= 1; |
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1936 if (state->out1) |
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1937 ga_concat(indent, (char_u *)"| "); |
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1938 else |
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1939 ga_concat(indent, (char_u *)" "); |
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1940 ga_append(indent, '\0'); |
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1941 |
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1942 nfa_print_state2(debugf, state->out, indent); |
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1943 |
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1944 /* replace last part of indent for state->out1 */ |
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1945 indent->ga_len -= 3; |
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1946 ga_concat(indent, (char_u *)" "); |
|
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1947 ga_append(indent, '\0'); |
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1948 |
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1949 nfa_print_state2(debugf, state->out1, indent); |
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1950 |
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1951 /* shrink indent */ |
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1952 indent->ga_len -= 3; |
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1953 ga_append(indent, '\0'); |
| 4444 | 1954 } |
| 1955 | |
| 1956 /* | |
| 1957 * Print the NFA state machine. | |
| 1958 */ | |
| 1959 static void | |
| 1960 nfa_dump(prog) | |
| 1961 nfa_regprog_T *prog; | |
| 1962 { | |
|
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1963 FILE *debugf = fopen(NFA_REGEXP_DUMP_LOG, "a"); |
| 4444 | 1964 |
| 1965 if (debugf != NULL) | |
| 1966 { | |
|
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1967 nfa_print_state(debugf, prog->start); |
| 4444 | 1968 fclose(debugf); |
| 1969 } | |
| 1970 } | |
| 1971 #endif /* ENABLE_LOG */ | |
| 1972 #endif /* DEBUG */ | |
| 1973 | |
| 1974 /* | |
| 1975 * Parse r.e. @expr and convert it into postfix form. | |
| 1976 * Return the postfix string on success, NULL otherwise. | |
| 1977 */ | |
| 1978 static int * | |
| 1979 re2post() | |
| 1980 { | |
| 1981 if (nfa_reg(REG_NOPAREN) == FAIL) | |
| 1982 return NULL; | |
| 1983 EMIT(NFA_MOPEN); | |
| 1984 return post_start; | |
| 1985 } | |
| 1986 | |
| 1987 /* NB. Some of the code below is inspired by Russ's. */ | |
| 1988 | |
| 1989 /* | |
| 1990 * Represents an NFA state plus zero or one or two arrows exiting. | |
| 1991 * if c == MATCH, no arrows out; matching state. | |
| 1992 * If c == SPLIT, unlabeled arrows to out and out1 (if != NULL). | |
| 1993 * If c < 256, labeled arrow with character c to out. | |
| 1994 */ | |
| 1995 | |
| 1996 static nfa_state_T *state_ptr; /* points to nfa_prog->state */ | |
| 1997 | |
| 1998 /* | |
| 1999 * Allocate and initialize nfa_state_T. | |
| 2000 */ | |
| 2001 static nfa_state_T * | |
| 2002 new_state(c, out, out1) | |
| 2003 int c; | |
| 2004 nfa_state_T *out; | |
| 2005 nfa_state_T *out1; | |
| 2006 { | |
| 2007 nfa_state_T *s; | |
| 2008 | |
| 2009 if (istate >= nstate) | |
| 2010 return NULL; | |
| 2011 | |
| 2012 s = &state_ptr[istate++]; | |
| 2013 | |
| 2014 s->c = c; | |
| 2015 s->out = out; | |
| 2016 s->out1 = out1; | |
| 2017 | |
| 2018 s->id = istate; | |
| 2019 s->lastlist = 0; | |
| 2020 s->negated = FALSE; | |
| 2021 | |
| 2022 return s; | |
| 2023 } | |
| 2024 | |
| 2025 /* | |
| 2026 * A partially built NFA without the matching state filled in. | |
| 2027 * Frag_T.start points at the start state. | |
| 2028 * Frag_T.out is a list of places that need to be set to the | |
| 2029 * next state for this fragment. | |
| 2030 */ | |
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2031 |
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2032 /* Since the out pointers in the list are always |
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2033 * uninitialized, we use the pointers themselves |
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2034 * as storage for the Ptrlists. */ |
| 4444 | 2035 typedef union Ptrlist Ptrlist; |
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2036 union Ptrlist |
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2037 { |
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2038 Ptrlist *next; |
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2039 nfa_state_T *s; |
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2040 }; |
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2041 |
| 4444 | 2042 struct Frag |
| 2043 { | |
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2044 nfa_state_T *start; |
| 4444 | 2045 Ptrlist *out; |
| 2046 }; | |
| 2047 typedef struct Frag Frag_T; | |
| 2048 | |
| 2049 static Frag_T frag __ARGS((nfa_state_T *start, Ptrlist *out)); | |
| 2050 static Ptrlist *list1 __ARGS((nfa_state_T **outp)); | |
| 2051 static void patch __ARGS((Ptrlist *l, nfa_state_T *s)); | |
| 2052 static Ptrlist *append __ARGS((Ptrlist *l1, Ptrlist *l2)); | |
| 2053 static void st_push __ARGS((Frag_T s, Frag_T **p, Frag_T *stack_end)); | |
| 2054 static Frag_T st_pop __ARGS((Frag_T **p, Frag_T *stack)); | |
| 2055 | |
| 2056 /* | |
| 4456 | 2057 * Initialize a Frag_T struct and return it. |
| 4444 | 2058 */ |
| 2059 static Frag_T | |
| 2060 frag(start, out) | |
| 2061 nfa_state_T *start; | |
| 2062 Ptrlist *out; | |
| 2063 { | |
| 4456 | 2064 Frag_T n; |
| 2065 | |
| 2066 n.start = start; | |
| 2067 n.out = out; | |
| 4444 | 2068 return n; |
| 2069 } | |
| 2070 | |
| 2071 /* | |
| 2072 * Create singleton list containing just outp. | |
| 2073 */ | |
| 2074 static Ptrlist * | |
| 2075 list1(outp) | |
| 2076 nfa_state_T **outp; | |
| 2077 { | |
| 2078 Ptrlist *l; | |
| 2079 | |
| 2080 l = (Ptrlist *)outp; | |
| 2081 l->next = NULL; | |
| 2082 return l; | |
| 2083 } | |
| 2084 | |
| 2085 /* | |
| 2086 * Patch the list of states at out to point to start. | |
| 2087 */ | |
| 2088 static void | |
| 2089 patch(l, s) | |
| 2090 Ptrlist *l; | |
| 2091 nfa_state_T *s; | |
| 2092 { | |
| 2093 Ptrlist *next; | |
| 2094 | |
| 2095 for (; l; l = next) | |
| 2096 { | |
| 2097 next = l->next; | |
| 2098 l->s = s; | |
| 2099 } | |
| 2100 } | |
| 2101 | |
| 2102 | |
| 2103 /* | |
| 2104 * Join the two lists l1 and l2, returning the combination. | |
| 2105 */ | |
| 2106 static Ptrlist * | |
| 2107 append(l1, l2) | |
| 2108 Ptrlist *l1; | |
| 2109 Ptrlist *l2; | |
| 2110 { | |
| 2111 Ptrlist *oldl1; | |
| 2112 | |
| 2113 oldl1 = l1; | |
| 2114 while (l1->next) | |
| 2115 l1 = l1->next; | |
| 2116 l1->next = l2; | |
| 2117 return oldl1; | |
| 2118 } | |
| 2119 | |
| 2120 /* | |
| 2121 * Stack used for transforming postfix form into NFA. | |
| 2122 */ | |
| 2123 static Frag_T empty; | |
| 2124 | |
| 2125 static void | |
| 2126 st_error(postfix, end, p) | |
|
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2127 int *postfix UNUSED; |
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2128 int *end UNUSED; |
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2129 int *p UNUSED; |
| 4444 | 2130 { |
|
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2131 #ifdef NFA_REGEXP_ERROR_LOG |
| 4444 | 2132 FILE *df; |
| 2133 int *p2; | |
| 2134 | |
|
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2135 df = fopen(NFA_REGEXP_ERROR_LOG, "a"); |
| 4444 | 2136 if (df) |
| 2137 { | |
| 2138 fprintf(df, "Error popping the stack!\n"); | |
| 2139 #ifdef DEBUG | |
| 2140 fprintf(df, "Current regexp is \"%s\"\n", nfa_regengine.expr); | |
| 2141 #endif | |
| 2142 fprintf(df, "Postfix form is: "); | |
| 2143 #ifdef DEBUG | |
| 2144 for (p2 = postfix; p2 < end; p2++) | |
| 2145 { | |
| 2146 nfa_set_code(*p2); | |
| 2147 fprintf(df, "%s, ", code); | |
| 2148 } | |
| 2149 nfa_set_code(*p); | |
| 2150 fprintf(df, "\nCurrent position is: "); | |
| 2151 for (p2 = postfix; p2 <= p; p2 ++) | |
| 2152 { | |
| 2153 nfa_set_code(*p2); | |
| 2154 fprintf(df, "%s, ", code); | |
| 2155 } | |
| 2156 #else | |
| 2157 for (p2 = postfix; p2 < end; p2++) | |
| 2158 { | |
| 2159 fprintf(df, "%d, ", *p2); | |
| 2160 } | |
| 2161 fprintf(df, "\nCurrent position is: "); | |
| 2162 for (p2 = postfix; p2 <= p; p2 ++) | |
| 2163 { | |
| 2164 fprintf(df, "%d, ", *p2); | |
| 2165 } | |
| 2166 #endif | |
| 2167 fprintf(df, "\n--------------------------\n"); | |
| 2168 fclose(df); | |
| 2169 } | |
|
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2170 #endif |
| 4444 | 2171 EMSG(_("E874: (NFA) Could not pop the stack !")); |
| 2172 } | |
| 2173 | |
| 2174 /* | |
| 2175 * Push an item onto the stack. | |
| 2176 */ | |
| 2177 static void | |
| 2178 st_push(s, p, stack_end) | |
| 2179 Frag_T s; | |
| 2180 Frag_T **p; | |
| 2181 Frag_T *stack_end; | |
| 2182 { | |
| 2183 Frag_T *stackp = *p; | |
| 2184 | |
| 2185 if (stackp >= stack_end) | |
| 2186 return; | |
| 2187 *stackp = s; | |
| 2188 *p = *p + 1; | |
| 2189 } | |
| 2190 | |
| 2191 /* | |
| 2192 * Pop an item from the stack. | |
| 2193 */ | |
| 2194 static Frag_T | |
| 2195 st_pop(p, stack) | |
| 2196 Frag_T **p; | |
| 2197 Frag_T *stack; | |
| 2198 { | |
| 2199 Frag_T *stackp; | |
| 2200 | |
| 2201 *p = *p - 1; | |
| 2202 stackp = *p; | |
| 2203 if (stackp < stack) | |
| 2204 return empty; | |
| 2205 return **p; | |
| 2206 } | |
| 2207 | |
| 2208 /* | |
| 2209 * Convert a postfix form into its equivalent NFA. | |
| 2210 * Return the NFA start state on success, NULL otherwise. | |
| 2211 */ | |
| 2212 static nfa_state_T * | |
| 2213 post2nfa(postfix, end, nfa_calc_size) | |
| 2214 int *postfix; | |
| 2215 int *end; | |
| 2216 int nfa_calc_size; | |
| 2217 { | |
| 2218 int *p; | |
| 2219 int mopen; | |
| 2220 int mclose; | |
| 2221 Frag_T *stack = NULL; | |
| 2222 Frag_T *stackp = NULL; | |
| 2223 Frag_T *stack_end = NULL; | |
| 2224 Frag_T e1; | |
| 2225 Frag_T e2; | |
| 2226 Frag_T e; | |
| 2227 nfa_state_T *s; | |
| 2228 nfa_state_T *s1; | |
| 2229 nfa_state_T *matchstate; | |
| 4484 | 2230 nfa_state_T *ret = NULL; |
| 4444 | 2231 |
| 2232 if (postfix == NULL) | |
| 2233 return NULL; | |
| 2234 | |
| 4456 | 2235 #define PUSH(s) st_push((s), &stackp, stack_end) |
| 4444 | 2236 #define POP() st_pop(&stackp, stack); \ |
| 2237 if (stackp < stack) \ | |
| 2238 { \ | |
| 2239 st_error(postfix, end, p); \ | |
| 2240 return NULL; \ | |
| 2241 } | |
| 2242 | |
| 2243 if (nfa_calc_size == FALSE) | |
| 2244 { | |
| 2245 /* Allocate space for the stack. Max states on the stack : nstate */ | |
| 4462 | 2246 stack = (Frag_T *) lalloc((nstate + 1) * sizeof(Frag_T), TRUE); |
| 4444 | 2247 stackp = stack; |
| 4462 | 2248 stack_end = stack + (nstate + 1); |
| 4444 | 2249 } |
| 2250 | |
| 2251 for (p = postfix; p < end; ++p) | |
| 2252 { | |
| 2253 switch (*p) | |
| 2254 { | |
| 2255 case NFA_CONCAT: | |
| 2256 /* Catenation. | |
| 2257 * Pay attention: this operator does not exist | |
| 2258 * in the r.e. itself (it is implicit, really). | |
| 2259 * It is added when r.e. is translated to postfix | |
| 2260 * form in re2post(). | |
| 2261 * | |
| 2262 * No new state added here. */ | |
| 2263 if (nfa_calc_size == TRUE) | |
| 2264 { | |
| 4458 | 2265 /* nstate += 0; */ |
| 4444 | 2266 break; |
| 2267 } | |
| 2268 e2 = POP(); | |
| 2269 e1 = POP(); | |
| 2270 patch(e1.out, e2.start); | |
| 2271 PUSH(frag(e1.start, e2.out)); | |
| 2272 break; | |
| 2273 | |
| 2274 case NFA_NOT: | |
| 2275 /* Negation of a character */ | |
| 2276 if (nfa_calc_size == TRUE) | |
| 2277 { | |
| 4458 | 2278 /* nstate += 0; */ |
| 4444 | 2279 break; |
| 2280 } | |
| 2281 e1 = POP(); | |
| 2282 e1.start->negated = TRUE; | |
|
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2283 #ifdef FEAT_MBYTE |
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2284 if (e1.start->c == NFA_COMPOSING) |
| 4444 | 2285 e1.start->out1->negated = TRUE; |
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2286 #endif |
| 4444 | 2287 PUSH(e1); |
| 2288 break; | |
| 2289 | |
| 2290 case NFA_OR: | |
| 2291 /* Alternation */ | |
| 2292 if (nfa_calc_size == TRUE) | |
| 2293 { | |
| 4458 | 2294 nstate++; |
| 4444 | 2295 break; |
| 2296 } | |
| 2297 e2 = POP(); | |
| 2298 e1 = POP(); | |
| 2299 s = new_state(NFA_SPLIT, e1.start, e2.start); | |
| 2300 if (s == NULL) | |
| 4484 | 2301 goto theend; |
| 4444 | 2302 PUSH(frag(s, append(e1.out, e2.out))); |
| 2303 break; | |
| 2304 | |
| 2305 case NFA_STAR: | |
| 2306 /* Zero or more */ | |
| 2307 if (nfa_calc_size == TRUE) | |
| 2308 { | |
| 4458 | 2309 nstate++; |
| 4444 | 2310 break; |
| 2311 } | |
| 2312 e = POP(); | |
| 2313 s = new_state(NFA_SPLIT, e.start, NULL); | |
| 2314 if (s == NULL) | |
| 4484 | 2315 goto theend; |
| 4444 | 2316 patch(e.out, s); |
| 2317 PUSH(frag(s, list1(&s->out1))); | |
| 2318 break; | |
| 2319 | |
| 2320 case NFA_QUEST: | |
| 2321 /* one or zero atoms=> greedy match */ | |
| 2322 if (nfa_calc_size == TRUE) | |
| 2323 { | |
| 4458 | 2324 nstate++; |
| 4444 | 2325 break; |
| 2326 } | |
| 2327 e = POP(); | |
| 2328 s = new_state(NFA_SPLIT, e.start, NULL); | |
| 2329 if (s == NULL) | |
| 4484 | 2330 goto theend; |
| 4444 | 2331 PUSH(frag(s, append(e.out, list1(&s->out1)))); |
| 2332 break; | |
| 2333 | |
| 2334 case NFA_QUEST_NONGREEDY: | |
| 2335 /* zero or one atoms => non-greedy match */ | |
| 2336 if (nfa_calc_size == TRUE) | |
| 2337 { | |
| 4458 | 2338 nstate++; |
| 4444 | 2339 break; |
| 2340 } | |
| 2341 e = POP(); | |
| 2342 s = new_state(NFA_SPLIT, NULL, e.start); | |
| 2343 if (s == NULL) | |
| 4484 | 2344 goto theend; |
| 4444 | 2345 PUSH(frag(s, append(e.out, list1(&s->out)))); |
| 2346 break; | |
| 2347 | |
| 2348 case NFA_PLUS: | |
| 2349 /* One or more */ | |
| 2350 if (nfa_calc_size == TRUE) | |
| 2351 { | |
| 4458 | 2352 nstate++; |
| 4444 | 2353 break; |
| 2354 } | |
| 2355 e = POP(); | |
| 2356 s = new_state(NFA_SPLIT, e.start, NULL); | |
| 2357 if (s == NULL) | |
| 4484 | 2358 goto theend; |
| 4444 | 2359 patch(e.out, s); |
| 2360 PUSH(frag(e.start, list1(&s->out1))); | |
| 2361 break; | |
| 2362 | |
| 2363 case NFA_SKIP_CHAR: | |
| 2364 /* Symbol of 0-length, Used in a repetition | |
| 2365 * with max/min count of 0 */ | |
| 2366 if (nfa_calc_size == TRUE) | |
| 2367 { | |
| 4458 | 2368 nstate++; |
| 4444 | 2369 break; |
| 2370 } | |
| 2371 s = new_state(NFA_SKIP_CHAR, NULL, NULL); | |
| 2372 if (s == NULL) | |
| 4484 | 2373 goto theend; |
| 4444 | 2374 PUSH(frag(s, list1(&s->out))); |
| 2375 break; | |
| 2376 | |
| 2377 case NFA_PREV_ATOM_NO_WIDTH: | |
|
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2378 case NFA_PREV_ATOM_NO_WIDTH_NEG: |
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2379 /* The \@= operator: match the preceding atom with zero width. |
|
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2380 * The \@! operator: no match for the preceding atom. |
| 4444 | 2381 * Surrounds the preceding atom with START_INVISIBLE and |
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2382 * END_INVISIBLE, similarly to MOPEN. */ |
| 4444 | 2383 |
| 2384 if (nfa_calc_size == TRUE) | |
| 2385 { | |
| 2386 nstate += 2; | |
| 2387 break; | |
| 2388 } | |
| 2389 e = POP(); | |
| 2390 s1 = new_state(NFA_END_INVISIBLE, NULL, NULL); | |
| 2391 if (s1 == NULL) | |
| 4484 | 2392 goto theend; |
| 4444 | 2393 patch(e.out, s1); |
| 2394 | |
| 2395 s = new_state(NFA_START_INVISIBLE, e.start, s1); | |
| 2396 if (s == NULL) | |
| 4484 | 2397 goto theend; |
|
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2398 if (*p == NFA_PREV_ATOM_NO_WIDTH_NEG) |
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2399 { |
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2400 s->negated = TRUE; |
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2401 s1->negated = TRUE; |
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2402 } |
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2403 |
| 4444 | 2404 PUSH(frag(s, list1(&s1->out))); |
| 2405 break; | |
| 2406 | |
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2407 #ifdef FEAT_MBYTE |
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2408 case NFA_COMPOSING: /* char with composing char */ |
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2409 #if 0 |
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2410 /* TODO */ |
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2411 if (regflags & RF_ICOMBINE) |
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2412 { |
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2413 /* use the base character only */ |
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2414 } |
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2415 #endif |
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2416 /* FALLTHROUGH */ |
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2417 #endif |
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2418 |
| 4444 | 2419 case NFA_MOPEN + 0: /* Submatch */ |
| 2420 case NFA_MOPEN + 1: | |
| 2421 case NFA_MOPEN + 2: | |
| 2422 case NFA_MOPEN + 3: | |
| 2423 case NFA_MOPEN + 4: | |
| 2424 case NFA_MOPEN + 5: | |
| 2425 case NFA_MOPEN + 6: | |
| 2426 case NFA_MOPEN + 7: | |
| 2427 case NFA_MOPEN + 8: | |
| 2428 case NFA_MOPEN + 9: | |
| 2429 case NFA_NOPEN: /* \%( "Invisible Submatch" */ | |
| 2430 if (nfa_calc_size == TRUE) | |
| 2431 { | |
| 2432 nstate += 2; | |
| 2433 break; | |
| 2434 } | |
| 2435 | |
| 2436 mopen = *p; | |
| 2437 switch (*p) | |
| 2438 { | |
| 2439 case NFA_NOPEN: | |
| 2440 mclose = NFA_NCLOSE; | |
| 2441 break; | |
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2442 #ifdef FEAT_MBYTE |
| 4444 | 2443 case NFA_COMPOSING: |
| 2444 mclose = NFA_END_COMPOSING; | |
| 2445 break; | |
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2446 #endif |
| 4444 | 2447 default: |
| 2448 /* NFA_MOPEN(0) ... NFA_MOPEN(9) */ | |
| 2449 mclose = *p + NSUBEXP; | |
| 2450 break; | |
| 2451 } | |
| 2452 | |
| 2453 /* Allow "NFA_MOPEN" as a valid postfix representation for | |
| 2454 * the empty regexp "". In this case, the NFA will be | |
| 2455 * NFA_MOPEN -> NFA_MCLOSE. Note that this also allows | |
| 2456 * empty groups of parenthesis, and empty mbyte chars */ | |
| 2457 if (stackp == stack) | |
| 2458 { | |
| 2459 s = new_state(mopen, NULL, NULL); | |
| 2460 if (s == NULL) | |
| 4484 | 2461 goto theend; |
| 4444 | 2462 s1 = new_state(mclose, NULL, NULL); |
| 2463 if (s1 == NULL) | |
| 4484 | 2464 goto theend; |
| 4444 | 2465 patch(list1(&s->out), s1); |
| 2466 PUSH(frag(s, list1(&s1->out))); | |
| 2467 break; | |
| 2468 } | |
| 2469 | |
| 2470 /* At least one node was emitted before NFA_MOPEN, so | |
| 2471 * at least one node will be between NFA_MOPEN and NFA_MCLOSE */ | |
| 2472 e = POP(); | |
| 2473 s = new_state(mopen, e.start, NULL); /* `(' */ | |
| 2474 if (s == NULL) | |
| 4484 | 2475 goto theend; |
| 4444 | 2476 |
| 2477 s1 = new_state(mclose, NULL, NULL); /* `)' */ | |
| 2478 if (s1 == NULL) | |
| 4484 | 2479 goto theend; |
| 4444 | 2480 patch(e.out, s1); |
| 2481 | |
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2482 #ifdef FEAT_MBYTE |
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2483 if (mopen == NFA_COMPOSING) |
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2484 /* COMPOSING->out1 = END_COMPOSING */ |
| 4444 | 2485 patch(list1(&s->out1), s1); |
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2486 #endif |
| 4444 | 2487 |
| 2488 PUSH(frag(s, list1(&s1->out))); | |
| 2489 break; | |
| 2490 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2491 case NFA_BACKREF1: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2492 case NFA_BACKREF2: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2493 case NFA_BACKREF3: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2494 case NFA_BACKREF4: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2495 case NFA_BACKREF5: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2496 case NFA_BACKREF6: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2497 case NFA_BACKREF7: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2498 case NFA_BACKREF8: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2499 case NFA_BACKREF9: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2500 if (nfa_calc_size == TRUE) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2501 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2502 nstate += 2; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2503 break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2504 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2505 s = new_state(*p, NULL, NULL); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2506 if (s == NULL) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2507 goto theend; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2508 s1 = new_state(NFA_SKIP, NULL, NULL); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2509 if (s1 == NULL) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2510 goto theend; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2511 patch(list1(&s->out), s1); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2512 PUSH(frag(s, list1(&s1->out))); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2513 break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2514 |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2515 case NFA_LNUM: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2516 case NFA_LNUM_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2517 case NFA_LNUM_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2518 case NFA_VCOL: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2519 case NFA_VCOL_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2520 case NFA_VCOL_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2521 case NFA_COL: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2522 case NFA_COL_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2523 case NFA_COL_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2524 if (nfa_calc_size == TRUE) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2525 { |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2526 nstate += 1; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2527 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2528 } |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2529 e1 = POP(); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2530 s = new_state(*p, NULL, NULL); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2531 if (s == NULL) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2532 goto theend; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2533 s->val = e1.start->c; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2534 PUSH(frag(s, list1(&s->out))); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2535 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2536 |
| 4444 | 2537 case NFA_ZSTART: |
| 2538 case NFA_ZEND: | |
| 2539 default: | |
| 2540 /* Operands */ | |
| 2541 if (nfa_calc_size == TRUE) | |
| 2542 { | |
| 4458 | 2543 nstate++; |
| 4444 | 2544 break; |
| 2545 } | |
| 2546 s = new_state(*p, NULL, NULL); | |
| 2547 if (s == NULL) | |
| 4484 | 2548 goto theend; |
| 4444 | 2549 PUSH(frag(s, list1(&s->out))); |
| 2550 break; | |
| 2551 | |
| 2552 } /* switch(*p) */ | |
| 2553 | |
| 2554 } /* for(p = postfix; *p; ++p) */ | |
| 2555 | |
| 2556 if (nfa_calc_size == TRUE) | |
| 2557 { | |
| 4458 | 2558 nstate++; |
| 4484 | 2559 goto theend; /* Return value when counting size is ignored anyway */ |
| 4444 | 2560 } |
| 2561 | |
| 2562 e = POP(); | |
| 2563 if (stackp != stack) | |
| 2564 EMSG_RET_NULL(_("E875: (NFA regexp) (While converting from postfix to NFA), too many states left on stack")); | |
| 2565 | |
| 2566 if (istate >= nstate) | |
| 2567 EMSG_RET_NULL(_("E876: (NFA regexp) Not enough space to store the whole NFA ")); | |
| 2568 | |
| 2569 matchstate = &state_ptr[istate++]; /* the match state */ | |
| 2570 matchstate->c = NFA_MATCH; | |
| 2571 matchstate->out = matchstate->out1 = NULL; | |
| 2572 | |
| 2573 patch(e.out, matchstate); | |
| 4484 | 2574 ret = e.start; |
| 2575 | |
| 2576 theend: | |
| 2577 vim_free(stack); | |
| 2578 return ret; | |
| 4444 | 2579 |
| 2580 #undef POP1 | |
| 2581 #undef PUSH1 | |
| 2582 #undef POP2 | |
| 2583 #undef PUSH2 | |
| 2584 #undef POP | |
| 2585 #undef PUSH | |
| 2586 } | |
| 2587 | |
| 2588 /**************************************************************** | |
| 2589 * NFA execution code. | |
| 2590 ****************************************************************/ | |
| 2591 | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2592 typedef struct |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2593 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2594 int in_use; /* number of subexpr with useful info */ |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2595 |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2596 /* When REG_MULTI is TRUE list.multi is used, otherwise list.line. */ |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2597 union |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2598 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2599 struct multipos |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2600 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2601 lpos_T start; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2602 lpos_T end; |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2603 } multi[NSUBEXP]; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2604 struct linepos |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2605 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2606 char_u *start; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2607 char_u *end; |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2608 } line[NSUBEXP]; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2609 } list; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2610 } regsub_T; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2611 |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2612 /* nfa_thread_T contains execution information of a NFA state */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2613 typedef struct |
| 4444 | 2614 { |
| 2615 nfa_state_T *state; | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2616 int count; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2617 regsub_T sub; /* submatch info, only party used */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2618 } nfa_thread_T; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2619 |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2620 /* nfa_list_T contains the alternative NFA execution states. */ |
| 4444 | 2621 typedef struct |
| 2622 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2623 nfa_thread_T *t; /* allocated array of states */ |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2624 int n; /* nr of states currently in "t" */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2625 int len; /* max nr of states in "t" */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2626 int id; /* ID of the list */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2627 } nfa_list_T; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2628 |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2629 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2630 static void |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2631 log_subexpr(sub) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2632 regsub_T *sub; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2633 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2634 int j; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2635 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2636 for (j = 0; j < sub->in_use; j++) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2637 if (REG_MULTI) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2638 fprintf(log_fd, "\n *** group %d, start: c=%d, l=%d, end: c=%d, l=%d", |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2639 j, |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2640 sub->list.multi[j].start.col, |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2641 (int)sub->list.multi[j].start.lnum, |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2642 sub->list.multi[j].end.col, |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2643 (int)sub->list.multi[j].end.lnum); |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2644 else |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2645 fprintf(log_fd, "\n *** group %d, start: \"%s\", end: \"%s\"", |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2646 j, |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2647 (char *)sub->list.line[j].start, |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2648 (char *)sub->list.line[j].end); |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2649 fprintf(log_fd, "\n"); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2650 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2651 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2652 |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2653 /* Used during execution: whether a match has been found. */ |
|
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2654 static int nfa_match; |
|
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2655 |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2656 static int sub_equal __ARGS((regsub_T *sub1, regsub_T *sub2)); |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2657 static void addstate __ARGS((nfa_list_T *l, nfa_state_T *state, regsub_T *sub, int off)); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2658 static void addstate_here __ARGS((nfa_list_T *l, nfa_state_T *state, regsub_T *sub, int *ip)); |
| 4444 | 2659 |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2660 /* |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2661 * Return TRUE if "sub1" and "sub2" have the same positions. |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2662 */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2663 static int |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2664 sub_equal(sub1, sub2) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2665 regsub_T *sub1; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2666 regsub_T *sub2; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2667 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2668 int i; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2669 int todo; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2670 linenr_T s1, e1; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2671 linenr_T s2, e2; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2672 char_u *sp1, *ep1; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2673 char_u *sp2, *ep2; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2674 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2675 todo = sub1->in_use > sub2->in_use ? sub1->in_use : sub2->in_use; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2676 if (REG_MULTI) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2677 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2678 for (i = 0; i < todo; ++i) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2679 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2680 if (i < sub1->in_use) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2681 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2682 s1 = sub1->list.multi[i].start.lnum; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2683 e1 = sub1->list.multi[i].end.lnum; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2684 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2685 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2686 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2687 s1 = 0; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2688 e1 = 0; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2689 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2690 if (i < sub2->in_use) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2691 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2692 s2 = sub2->list.multi[i].start.lnum; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2693 e2 = sub2->list.multi[i].end.lnum; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2694 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2695 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2696 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2697 s2 = 0; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2698 e2 = 0; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2699 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2700 if (s1 != s2 || e1 != e2) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2701 return FALSE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2702 if (s1 != 0 && sub1->list.multi[i].start.col |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2703 != sub2->list.multi[i].start.col) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2704 return FALSE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2705 if (e1 != 0 && sub1->list.multi[i].end.col |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2706 != sub2->list.multi[i].end.col) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2707 return FALSE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2708 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2709 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2710 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2711 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2712 for (i = 0; i < todo; ++i) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2713 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2714 if (i < sub1->in_use) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2715 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2716 sp1 = sub1->list.line[i].start; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2717 ep1 = sub1->list.line[i].end; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2718 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2719 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2720 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2721 sp1 = NULL; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2722 ep1 = NULL; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2723 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2724 if (i < sub2->in_use) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2725 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2726 sp2 = sub2->list.line[i].start; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2727 ep2 = sub2->list.line[i].end; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2728 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2729 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2730 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2731 sp2 = NULL; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2732 ep2 = NULL; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2733 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2734 if (sp1 != sp2 || ep1 != ep2) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2735 return FALSE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2736 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2737 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2738 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2739 return TRUE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2740 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2741 |
| 4444 | 2742 static void |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2743 addstate(l, state, sub, off) |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2744 nfa_list_T *l; /* runtime state list */ |
| 4444 | 2745 nfa_state_T *state; /* state to update */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2746 regsub_T *sub; /* pointers to subexpressions */ |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2747 int off; /* byte offset, when -1 go to next line */ |
| 4444 | 2748 { |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2749 int subidx; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2750 nfa_thread_T *thread; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2751 lpos_T save_lpos; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2752 int save_in_use; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2753 char_u *save_ptr; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2754 int i; |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2755 #ifdef ENABLE_LOG |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2756 int did_print = FALSE; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2757 #endif |
| 4444 | 2758 |
| 2759 if (l == NULL || state == NULL) | |
| 2760 return; | |
| 2761 | |
| 2762 switch (state->c) | |
| 2763 { | |
| 2764 case NFA_SPLIT: | |
| 2765 case NFA_NOT: | |
| 2766 case NFA_NOPEN: | |
| 2767 case NFA_NCLOSE: | |
| 2768 case NFA_MCLOSE: | |
| 2769 case NFA_MCLOSE + 1: | |
| 2770 case NFA_MCLOSE + 2: | |
| 2771 case NFA_MCLOSE + 3: | |
| 2772 case NFA_MCLOSE + 4: | |
| 2773 case NFA_MCLOSE + 5: | |
| 2774 case NFA_MCLOSE + 6: | |
| 2775 case NFA_MCLOSE + 7: | |
| 2776 case NFA_MCLOSE + 8: | |
| 2777 case NFA_MCLOSE + 9: | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2778 /* These nodes are not added themselves but their "out" and/or |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2779 * "out1" may be added below. */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2780 break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2781 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2782 case NFA_MOPEN: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2783 case NFA_MOPEN + 1: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2784 case NFA_MOPEN + 2: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2785 case NFA_MOPEN + 3: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2786 case NFA_MOPEN + 4: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2787 case NFA_MOPEN + 5: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2788 case NFA_MOPEN + 6: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2789 case NFA_MOPEN + 7: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2790 case NFA_MOPEN + 8: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2791 case NFA_MOPEN + 9: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2792 /* These nodes do not need to be added, but we need to bail out |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2793 * when it was tried to be added to this list before. */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2794 if (state->lastlist == l->id) |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2795 goto skip_add; |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2796 state->lastlist = l->id; |
| 4444 | 2797 break; |
| 2798 | |
| 2799 default: | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2800 if (state->lastlist == l->id) |
| 4444 | 2801 { |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2802 /* This state is already in the list, don't add it again, |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2803 * unless it is an MOPEN that is used for a backreference. */ |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2804 if (!nfa_has_backref) |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2805 { |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2806 skip_add: |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2807 #ifdef ENABLE_LOG |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2808 nfa_set_code(state->c); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2809 fprintf(log_fd, "> Not adding state %d to list %d. char %d: %s\n", |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2810 abs(state->id), l->id, state->c, code); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2811 #endif |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2812 return; |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2813 } |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2814 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2815 /* See if the same state is already in the list with the same |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2816 * positions. */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2817 for (i = 0; i < l->n; ++i) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2818 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2819 thread = &l->t[i]; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2820 if (thread->state->id == state->id |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2821 && sub_equal(&thread->sub, sub)) |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2822 goto skip_add; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2823 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2824 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2825 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2826 /* when there are backreferences the number of states may be (a |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2827 * lot) bigger */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2828 if (nfa_has_backref && l->n == l->len) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2829 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2830 int newlen = l->len * 3 / 2 + 50; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2831 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2832 l->t = vim_realloc(l->t, newlen * sizeof(nfa_thread_T)); |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2833 l->len = newlen; |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2834 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2835 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2836 /* add the state to the list */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2837 state->lastlist = l->id; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2838 thread = &l->t[l->n++]; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2839 thread->state = state; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2840 thread->sub.in_use = sub->in_use; |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2841 if (sub->in_use > 0) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2842 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2843 /* Copy the match start and end positions. */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2844 if (REG_MULTI) |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2845 mch_memmove(&thread->sub.list.multi[0], |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2846 &sub->list.multi[0], |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2847 sizeof(struct multipos) * sub->in_use); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2848 else |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2849 mch_memmove(&thread->sub.list.line[0], |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2850 &sub->list.line[0], |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2851 sizeof(struct linepos) * sub->in_use); |
| 4444 | 2852 } |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2853 #ifdef ENABLE_LOG |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2854 { |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2855 int col; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2856 |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2857 if (thread->sub.in_use <= 0) |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2858 col = -1; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2859 else if (REG_MULTI) |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2860 col = thread->sub.list.multi[0].start.col; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2861 else |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2862 col = (int)(thread->sub.list.line[0].start - regline); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2863 nfa_set_code(state->c); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2864 fprintf(log_fd, "> Adding state %d to list %d. char %d: %s (start col %d)\n", |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2865 abs(state->id), l->id, state->c, code, col); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2866 did_print = TRUE; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2867 } |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2868 #endif |
| 4444 | 2869 } |
| 2870 | |
| 2871 #ifdef ENABLE_LOG | |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2872 if (!did_print) |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2873 { |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2874 int col; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2875 |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2876 if (sub->in_use <= 0) |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2877 col = -1; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2878 else if (REG_MULTI) |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2879 col = sub->list.multi[0].start.col; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2880 else |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2881 col = (int)(sub->list.line[0].start - regline); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2882 nfa_set_code(state->c); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2883 fprintf(log_fd, "> Processing state %d for list %d. char %d: %s (start col %d)\n", |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2884 abs(state->id), l->id, state->c, code, col); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2885 } |
| 4444 | 2886 #endif |
| 2887 switch (state->c) | |
| 2888 { | |
| 2889 case NFA_MATCH: | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2890 nfa_match = TRUE; |
| 4444 | 2891 break; |
| 2892 | |
| 2893 case NFA_SPLIT: | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2894 addstate(l, state->out, sub, off); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2895 addstate(l, state->out1, sub, off); |
| 4444 | 2896 break; |
| 2897 | |
| 2898 #if 0 | |
| 2899 case NFA_END_NEG_RANGE: | |
| 2900 /* Nothing to handle here. nfa_regmatch() will take care of it */ | |
| 2901 break; | |
| 2902 | |
| 2903 case NFA_NOT: | |
| 2904 EMSG(_("E999: (NFA regexp internal error) Should not process NOT node !")); | |
| 2905 #ifdef ENABLE_LOG | |
| 2906 fprintf(f, "\n\n>>> E999: Added state NFA_NOT to a list ... Something went wrong ! Why wasn't it processed already? \n\n"); | |
| 2907 #endif | |
| 2908 break; | |
| 2909 | |
| 2910 case NFA_COMPOSING: | |
| 2911 /* nfa_regmatch() will match all the bytes of this composing char. */ | |
| 2912 break; | |
| 2913 #endif | |
| 2914 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2915 case NFA_SKIP_CHAR: |
| 4444 | 2916 case NFA_NOPEN: |
| 2917 case NFA_NCLOSE: | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2918 addstate(l, state->out, sub, off); |
| 4444 | 2919 break; |
| 2920 | |
| 2921 case NFA_MOPEN + 0: | |
| 2922 case NFA_MOPEN + 1: | |
| 2923 case NFA_MOPEN + 2: | |
| 2924 case NFA_MOPEN + 3: | |
| 2925 case NFA_MOPEN + 4: | |
| 2926 case NFA_MOPEN + 5: | |
| 2927 case NFA_MOPEN + 6: | |
| 2928 case NFA_MOPEN + 7: | |
| 2929 case NFA_MOPEN + 8: | |
| 2930 case NFA_MOPEN + 9: | |
| 2931 case NFA_ZSTART: | |
| 2932 if (state->c == NFA_ZSTART) | |
| 2933 subidx = 0; | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2934 else |
|
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2935 subidx = state->c - NFA_MOPEN; |
| 4444 | 2936 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2937 /* Set the position (with "off") in the subexpression. Save and |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2938 * restore it when it was in use. Otherwise fill any gap. */ |
|
4649
9f502d8d5165
updated for version 7.3.1072
Bram Moolenaar <bram@vim.org>
parents:
4647
diff
changeset
|
2939 save_ptr = NULL; |
| 4444 | 2940 if (REG_MULTI) |
| 2941 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2942 if (subidx < sub->in_use) |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2943 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2944 save_lpos = sub->list.multi[subidx].start; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2945 save_in_use = -1; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2946 } |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2947 else |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2948 { |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2949 save_in_use = sub->in_use; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2950 for (i = sub->in_use; i < subidx; ++i) |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2951 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2952 sub->list.multi[i].start.lnum = -1; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2953 sub->list.multi[i].end.lnum = -1; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2954 } |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2955 sub->in_use = subidx + 1; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2956 } |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2957 if (off == -1) |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2958 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2959 sub->list.multi[subidx].start.lnum = reglnum + 1; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2960 sub->list.multi[subidx].start.col = 0; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2961 } |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2962 else |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2963 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2964 sub->list.multi[subidx].start.lnum = reglnum; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2965 sub->list.multi[subidx].start.col = |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2966 (colnr_T)(reginput - regline + off); |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2967 } |
| 4444 | 2968 } |
| 2969 else | |
| 2970 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2971 if (subidx < sub->in_use) |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2972 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2973 save_ptr = sub->list.line[subidx].start; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2974 save_in_use = -1; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2975 } |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2976 else |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2977 { |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2978 save_in_use = sub->in_use; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2979 for (i = sub->in_use; i < subidx; ++i) |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2980 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2981 sub->list.line[i].start = NULL; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2982 sub->list.line[i].end = NULL; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2983 } |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2984 sub->in_use = subidx + 1; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2985 } |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2986 sub->list.line[subidx].start = reginput + off; |
| 4444 | 2987 } |
| 2988 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2989 addstate(l, state->out, sub, off); |
| 4444 | 2990 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2991 if (save_in_use == -1) |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2992 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2993 if (REG_MULTI) |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2994 sub->list.multi[subidx].start = save_lpos; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2995 else |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2996 sub->list.line[subidx].start = save_ptr; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2997 } |
| 4444 | 2998 else |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2999 sub->in_use = save_in_use; |
| 4444 | 3000 break; |
| 3001 | |
| 3002 case NFA_MCLOSE + 0: | |
|
4553
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
3003 if (nfa_has_zend) |
| 4444 | 3004 { |
|
4569
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
3005 /* Do not overwrite the position set by \ze. If no \ze |
|
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
3006 * encountered end will be set in nfa_regtry(). */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3007 addstate(l, state->out, sub, off); |
| 4444 | 3008 break; |
| 3009 } | |
| 3010 case NFA_MCLOSE + 1: | |
| 3011 case NFA_MCLOSE + 2: | |
| 3012 case NFA_MCLOSE + 3: | |
| 3013 case NFA_MCLOSE + 4: | |
| 3014 case NFA_MCLOSE + 5: | |
| 3015 case NFA_MCLOSE + 6: | |
| 3016 case NFA_MCLOSE + 7: | |
| 3017 case NFA_MCLOSE + 8: | |
| 3018 case NFA_MCLOSE + 9: | |
| 3019 case NFA_ZEND: | |
| 3020 if (state->c == NFA_ZEND) | |
| 3021 subidx = 0; | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
3022 else |
|
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
3023 subidx = state->c - NFA_MCLOSE; |
| 4444 | 3024 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3025 /* We don't fill in gaps here, there must have been an MOPEN that |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3026 * has done that. */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3027 save_in_use = sub->in_use; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3028 if (sub->in_use <= subidx) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3029 sub->in_use = subidx + 1; |
| 4444 | 3030 if (REG_MULTI) |
| 3031 { | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3032 save_lpos = sub->list.multi[subidx].end; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3033 if (off == -1) |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3034 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3035 sub->list.multi[subidx].end.lnum = reglnum + 1; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3036 sub->list.multi[subidx].end.col = 0; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3037 } |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3038 else |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3039 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3040 sub->list.multi[subidx].end.lnum = reglnum; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3041 sub->list.multi[subidx].end.col = |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
3042 (colnr_T)(reginput - regline + off); |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3043 } |
| 4444 | 3044 } |
| 3045 else | |
| 3046 { | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3047 save_ptr = sub->list.line[subidx].end; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3048 sub->list.line[subidx].end = reginput + off; |
| 4444 | 3049 } |
| 3050 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3051 addstate(l, state->out, sub, off); |
| 4444 | 3052 |
| 3053 if (REG_MULTI) | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3054 sub->list.multi[subidx].end = save_lpos; |
| 4444 | 3055 else |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3056 sub->list.line[subidx].end = save_ptr; |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3057 sub->in_use = save_in_use; |
| 4444 | 3058 break; |
| 3059 } | |
| 3060 } | |
| 3061 | |
| 3062 /* | |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3063 * Like addstate(), but the new state(s) are put at position "*ip". |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3064 * Used for zero-width matches, next state to use is the added one. |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3065 * This makes sure the order of states to be tried does not change, which |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3066 * matters for alternatives. |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3067 */ |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3068 static void |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3069 addstate_here(l, state, sub, ip) |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3070 nfa_list_T *l; /* runtime state list */ |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3071 nfa_state_T *state; /* state to update */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3072 regsub_T *sub; /* pointers to subexpressions */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3073 int *ip; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3074 { |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3075 int tlen = l->n; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3076 int count; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3077 int i = *ip; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3078 |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3079 /* first add the state(s) at the end, so that we know how many there are */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3080 addstate(l, state, sub, 0); |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3081 |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3082 /* when "*ip" was at the end of the list, nothing to do */ |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3083 if (i + 1 == tlen) |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3084 return; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3085 |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3086 /* re-order to put the new state at the current position */ |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3087 count = l->n - tlen; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3088 if (count == 1) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3089 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3090 /* overwrite the current state */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3091 l->t[i] = l->t[l->n - 1]; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3092 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3093 else if (count > 1) |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3094 { |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3095 /* make space for new states, then move them from the |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3096 * end to the current position */ |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3097 mch_memmove(&(l->t[i + count]), |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3098 &(l->t[i + 1]), |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3099 sizeof(nfa_thread_T) * (l->n - i - 1)); |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3100 mch_memmove(&(l->t[i]), |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3101 &(l->t[l->n - 1]), |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3102 sizeof(nfa_thread_T) * count); |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3103 } |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3104 --l->n; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3105 *ip = i - 1; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3106 } |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3107 |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3108 /* |
| 4444 | 3109 * Check character class "class" against current character c. |
| 3110 */ | |
| 3111 static int | |
| 3112 check_char_class(class, c) | |
| 3113 int class; | |
| 3114 int c; | |
| 3115 { | |
| 3116 switch (class) | |
| 3117 { | |
| 3118 case NFA_CLASS_ALNUM: | |
| 4464 | 3119 if (c >= 1 && c <= 255 && isalnum(c)) |
| 4444 | 3120 return OK; |
| 3121 break; | |
| 3122 case NFA_CLASS_ALPHA: | |
| 4464 | 3123 if (c >= 1 && c <= 255 && isalpha(c)) |
| 4444 | 3124 return OK; |
| 3125 break; | |
| 3126 case NFA_CLASS_BLANK: | |
| 3127 if (c == ' ' || c == '\t') | |
| 3128 return OK; | |
| 3129 break; | |
| 3130 case NFA_CLASS_CNTRL: | |
| 4464 | 3131 if (c >= 1 && c <= 255 && iscntrl(c)) |
| 4444 | 3132 return OK; |
| 3133 break; | |
| 3134 case NFA_CLASS_DIGIT: | |
| 3135 if (VIM_ISDIGIT(c)) | |
| 3136 return OK; | |
| 3137 break; | |
| 3138 case NFA_CLASS_GRAPH: | |
| 4464 | 3139 if (c >= 1 && c <= 255 && isgraph(c)) |
| 4444 | 3140 return OK; |
| 3141 break; | |
| 3142 case NFA_CLASS_LOWER: | |
| 3143 if (MB_ISLOWER(c)) | |
| 3144 return OK; | |
| 3145 break; | |
| 3146 case NFA_CLASS_PRINT: | |
| 3147 if (vim_isprintc(c)) | |
| 3148 return OK; | |
| 3149 break; | |
| 3150 case NFA_CLASS_PUNCT: | |
| 4464 | 3151 if (c >= 1 && c <= 255 && ispunct(c)) |
| 4444 | 3152 return OK; |
| 3153 break; | |
| 3154 case NFA_CLASS_SPACE: | |
| 3155 if ((c >=9 && c <= 13) || (c == ' ')) | |
| 3156 return OK; | |
| 3157 break; | |
| 3158 case NFA_CLASS_UPPER: | |
| 3159 if (MB_ISUPPER(c)) | |
| 3160 return OK; | |
| 3161 break; | |
| 3162 case NFA_CLASS_XDIGIT: | |
| 3163 if (vim_isxdigit(c)) | |
| 3164 return OK; | |
| 3165 break; | |
| 3166 case NFA_CLASS_TAB: | |
| 3167 if (c == '\t') | |
| 3168 return OK; | |
| 3169 break; | |
| 3170 case NFA_CLASS_RETURN: | |
| 3171 if (c == '\r') | |
| 3172 return OK; | |
| 3173 break; | |
| 3174 case NFA_CLASS_BACKSPACE: | |
| 3175 if (c == '\b') | |
| 3176 return OK; | |
| 3177 break; | |
| 3178 case NFA_CLASS_ESCAPE: | |
| 3179 if (c == '\033') | |
| 3180 return OK; | |
| 3181 break; | |
| 3182 | |
| 3183 default: | |
| 3184 /* should not be here :P */ | |
| 3185 EMSG_RET_FAIL(_("E877: (NFA regexp) Invalid character class ")); | |
| 3186 } | |
| 3187 return FAIL; | |
| 3188 } | |
| 3189 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3190 static int match_backref __ARGS((regsub_T *sub, int subidx, int *bytelen)); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3191 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3192 /* |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3193 * Check for a match with subexpression "subidx". |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3194 * return TRUE if it matches. |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3195 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3196 static int |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3197 match_backref(sub, subidx, bytelen) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3198 regsub_T *sub; /* pointers to subexpressions */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3199 int subidx; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3200 int *bytelen; /* out: length of match in bytes */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3201 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3202 int len; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3203 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3204 if (sub->in_use <= subidx) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3205 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3206 retempty: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3207 /* backref was not set, match an empty string */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3208 *bytelen = 0; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3209 return TRUE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3210 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3211 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3212 if (REG_MULTI) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3213 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3214 if (sub->list.multi[subidx].start.lnum < 0 |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3215 || sub->list.multi[subidx].end.lnum < 0) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3216 goto retempty; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3217 /* TODO: line breaks */ |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3218 len = sub->list.multi[subidx].end.col |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3219 - sub->list.multi[subidx].start.col; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3220 if (cstrncmp(regline + sub->list.multi[subidx].start.col, |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3221 reginput, &len) == 0) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3222 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3223 *bytelen = len; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3224 return TRUE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3225 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3226 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3227 else |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3228 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3229 if (sub->list.line[subidx].start == NULL |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3230 || sub->list.line[subidx].end == NULL) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3231 goto retempty; |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3232 len = (int)(sub->list.line[subidx].end - sub->list.line[subidx].start); |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3233 if (cstrncmp(sub->list.line[subidx].start, reginput, &len) == 0) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3234 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3235 *bytelen = len; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3236 return TRUE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3237 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3238 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3239 return FALSE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3240 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3241 |
| 4444 | 3242 /* |
| 3243 * Set all NFA nodes' list ID equal to -1. | |
| 3244 */ | |
| 3245 static void | |
| 3246 nfa_set_neg_listids(start) | |
| 3247 nfa_state_T *start; | |
| 3248 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3249 if (start != NULL && start->lastlist >= 0) |
| 4444 | 3250 { |
| 3251 start->lastlist = -1; | |
| 3252 nfa_set_neg_listids(start->out); | |
| 3253 nfa_set_neg_listids(start->out1); | |
| 3254 } | |
| 3255 } | |
| 3256 | |
| 3257 /* | |
| 3258 * Set all NFA nodes' list ID equal to 0. | |
| 3259 */ | |
| 3260 static void | |
| 3261 nfa_set_null_listids(start) | |
| 3262 nfa_state_T *start; | |
| 3263 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3264 if (start != NULL && start->lastlist == -1) |
| 4444 | 3265 { |
| 3266 start->lastlist = 0; | |
| 3267 nfa_set_null_listids(start->out); | |
| 3268 nfa_set_null_listids(start->out1); | |
| 3269 } | |
| 3270 } | |
| 3271 | |
| 3272 /* | |
| 3273 * Save list IDs for all NFA states in "list". | |
| 3274 */ | |
| 3275 static void | |
| 3276 nfa_save_listids(start, list) | |
| 3277 nfa_state_T *start; | |
| 3278 int *list; | |
| 3279 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3280 if (start != NULL && start->lastlist != -1) |
| 4444 | 3281 { |
| 3282 list[abs(start->id)] = start->lastlist; | |
| 3283 start->lastlist = -1; | |
| 3284 nfa_save_listids(start->out, list); | |
| 3285 nfa_save_listids(start->out1, list); | |
| 3286 } | |
| 3287 } | |
| 3288 | |
| 3289 /* | |
| 3290 * Restore list IDs from "list" to all NFA states. | |
| 3291 */ | |
| 3292 static void | |
| 3293 nfa_restore_listids(start, list) | |
| 3294 nfa_state_T *start; | |
| 3295 int *list; | |
| 3296 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3297 if (start != NULL && start->lastlist == -1) |
| 4444 | 3298 { |
| 3299 start->lastlist = list[abs(start->id)]; | |
| 3300 nfa_restore_listids(start->out, list); | |
| 3301 nfa_restore_listids(start->out1, list); | |
| 3302 } | |
| 3303 } | |
| 3304 | |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3305 static int |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3306 nfa_re_num_cmp(val, op, pos) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3307 long_u val; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3308 int op; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3309 long_u pos; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3310 { |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3311 if (op == 1) return pos > val; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3312 if (op == 2) return pos < val; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3313 return val == pos; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3314 } |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3315 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3316 static int nfa_regmatch __ARGS((nfa_state_T *start, regsub_T *submatch, regsub_T *m)); |
|
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diff
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|
3317 |
| 4444 | 3318 /* |
| 3319 * Main matching routine. | |
| 3320 * | |
| 3321 * Run NFA to determine whether it matches reginput. | |
| 3322 * | |
| 3323 * Return TRUE if there is a match, FALSE otherwise. | |
| 3324 * Note: Caller must ensure that: start != NULL. | |
| 3325 */ | |
| 3326 static int | |
| 3327 nfa_regmatch(start, submatch, m) | |
| 3328 nfa_state_T *start; | |
| 3329 regsub_T *submatch; | |
| 3330 regsub_T *m; | |
| 3331 { | |
| 3332 int result; | |
| 3333 int size = 0; | |
| 3334 int flag = 0; | |
| 3335 int old_reglnum = -1; | |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
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4537
diff
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|
3336 int go_to_nextline = FALSE; |
|
532c2e850256
updated for version 7.3.1017
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parents:
4537
diff
changeset
|
3337 nfa_thread_T *t; |
| 4444 | 3338 char_u *old_reginput = NULL; |
| 3339 char_u *old_regline = NULL; | |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
3340 nfa_list_T list[3]; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
3341 nfa_list_T *listtbl[2][2]; |
|
532c2e850256
updated for version 7.3.1017
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parents:
4537
diff
changeset
|
3342 nfa_list_T *ll; |
| 4444 | 3343 int listid = 1; |
|
4549
849180347ac3
updated for version 7.3.1022
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diff
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|
3344 int listidx; |
|
4539
532c2e850256
updated for version 7.3.1017
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diff
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|
3345 nfa_list_T *thislist; |
|
532c2e850256
updated for version 7.3.1017
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parents:
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diff
changeset
|
3346 nfa_list_T *nextlist; |
|
532c2e850256
updated for version 7.3.1017
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parents:
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diff
changeset
|
3347 nfa_list_T *neglist; |
| 4444 | 3348 int *listids = NULL; |
| 4460 | 3349 #ifdef NFA_REGEXP_DEBUG_LOG |
|
4531
1be43c095aff
updated for version 7.3.1013
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4529
diff
changeset
|
3350 FILE *debug = fopen(NFA_REGEXP_DEBUG_LOG, "a"); |
| 4444 | 3351 |
| 3352 if (debug == NULL) | |
| 3353 { | |
|
4531
1be43c095aff
updated for version 7.3.1013
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4529
diff
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|
3354 EMSG2(_("(NFA) COULD NOT OPEN %s !"), NFA_REGEXP_DEBUG_LOG); |
| 4444 | 3355 return FALSE; |
| 3356 } | |
| 3357 #endif | |
|
4561
4d81fdda8f35
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Bram Moolenaar <bram@vim.org>
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4559
diff
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|
3358 nfa_match = FALSE; |
| 4444 | 3359 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3360 /* Allocate memory for the lists of nodes. */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3361 size = (nstate + 1) * sizeof(nfa_thread_T); |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3362 list[0].t = (nfa_thread_T *)lalloc_clear(size, TRUE); |
|
857f6c53f117
updated for version 7.3.1071
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|
3363 list[0].len = nstate + 1; |
|
857f6c53f117
updated for version 7.3.1071
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diff
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|
3364 list[1].t = (nfa_thread_T *)lalloc_clear(size, TRUE); |
|
857f6c53f117
updated for version 7.3.1071
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diff
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|
3365 list[1].len = nstate + 1; |
|
857f6c53f117
updated for version 7.3.1071
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diff
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|
3366 list[2].t = (nfa_thread_T *)lalloc_clear(size, TRUE); |
|
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diff
changeset
|
3367 list[2].len = nstate + 1; |
| 4444 | 3368 if (list[0].t == NULL || list[1].t == NULL || list[2].t == NULL) |
| 3369 goto theend; | |
| 3370 | |
| 3371 #ifdef ENABLE_LOG | |
|
4531
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updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
3372 log_fd = fopen(NFA_REGEXP_RUN_LOG, "a"); |
| 4444 | 3373 if (log_fd != NULL) |
| 3374 { | |
| 3375 fprintf(log_fd, "**********************************\n"); | |
| 3376 nfa_set_code(start->c); | |
| 3377 fprintf(log_fd, " RUNNING nfa_regmatch() starting with state %d, code %s\n", | |
| 3378 abs(start->id), code); | |
| 3379 fprintf(log_fd, "**********************************\n"); | |
| 3380 } | |
| 3381 else | |
| 3382 { | |
| 3383 EMSG(_("Could not open temporary log file for writing, displaying on stderr ... ")); | |
| 3384 log_fd = stderr; | |
| 3385 } | |
| 3386 #endif | |
| 3387 | |
| 3388 thislist = &list[0]; | |
| 3389 thislist->n = 0; | |
| 3390 nextlist = &list[1]; | |
| 3391 nextlist->n = 0; | |
| 3392 neglist = &list[2]; | |
| 3393 neglist->n = 0; | |
| 3394 #ifdef ENABLE_LOG | |
| 3395 fprintf(log_fd, "(---) STARTSTATE\n"); | |
| 3396 #endif | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
3397 thislist->id = listid; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3398 addstate(thislist, start, m, 0); |
| 4444 | 3399 |
| 3400 /* There are two cases when the NFA advances: 1. input char matches the | |
| 3401 * NFA node and 2. input char does not match the NFA node, but the next | |
| 3402 * node is NFA_NOT. The following macro calls addstate() according to | |
| 3403 * these rules. It is used A LOT, so use the "listtbl" table for speed */ | |
| 3404 listtbl[0][0] = NULL; | |
| 3405 listtbl[0][1] = neglist; | |
| 3406 listtbl[1][0] = nextlist; | |
| 3407 listtbl[1][1] = NULL; | |
| 3408 #define ADD_POS_NEG_STATE(node) \ | |
| 3409 ll = listtbl[result ? 1 : 0][node->negated]; \ | |
| 3410 if (ll != NULL) \ | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3411 addstate(ll, node->out , &t->sub, clen); |
| 4444 | 3412 |
| 3413 | |
| 3414 /* | |
| 3415 * Run for each character. | |
| 3416 */ | |
|
4515
90e9917d4114
updated for version 7.3.1005
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4507
diff
changeset
|
3417 for (;;) |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3418 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3419 int curc; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3420 int clen; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
3421 |
| 4444 | 3422 #ifdef FEAT_MBYTE |
| 3423 if (has_mbyte) | |
| 3424 { | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3425 curc = (*mb_ptr2char)(reginput); |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3426 clen = (*mb_ptr2len)(reginput); |
| 4444 | 3427 } |
| 3428 else | |
| 3429 #endif | |
| 3430 { | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
3431 curc = *reginput; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3432 clen = 1; |
| 4444 | 3433 } |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3434 if (curc == NUL) |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
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4507
diff
changeset
|
3435 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
3436 clen = 0; |
|
4515
90e9917d4114
updated for version 7.3.1005
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parents:
4507
diff
changeset
|
3437 go_to_nextline = FALSE; |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3438 } |
| 4444 | 3439 |
| 3440 /* swap lists */ | |
| 3441 thislist = &list[flag]; | |
| 3442 nextlist = &list[flag ^= 1]; | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3443 nextlist->n = 0; /* clear nextlist */ |
| 4444 | 3444 listtbl[1][0] = nextlist; |
| 3445 ++listid; | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3446 thislist->id = listid; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3447 nextlist->id = listid + 1; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3448 neglist->id = listid + 1; |
| 4444 | 3449 |
| 3450 #ifdef ENABLE_LOG | |
| 3451 fprintf(log_fd, "------------------------------------------\n"); | |
| 3452 fprintf(log_fd, ">>> Reginput is \"%s\"\n", reginput); | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3453 fprintf(log_fd, ">>> Advanced one character ... Current char is %c (code %d) \n", curc, (int)curc); |
| 4444 | 3454 fprintf(log_fd, ">>> Thislist has %d states available: ", thislist->n); |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3455 { |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
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4547
diff
changeset
|
3456 int i; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3457 |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3458 for (i = 0; i < thislist->n; i++) |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3459 fprintf(log_fd, "%d ", abs(thislist->t[i].state->id)); |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3460 } |
| 4444 | 3461 fprintf(log_fd, "\n"); |
| 3462 #endif | |
| 3463 | |
| 4460 | 3464 #ifdef NFA_REGEXP_DEBUG_LOG |
| 4444 | 3465 fprintf(debug, "\n-------------------\n"); |
| 3466 #endif | |
| 4480 | 3467 /* |
| 3468 * If the state lists are empty we can stop. | |
| 3469 */ | |
| 3470 if (thislist->n == 0 && neglist->n == 0) | |
| 3471 break; | |
| 4444 | 3472 |
| 3473 /* compute nextlist */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3474 for (listidx = 0; listidx < thislist->n || neglist->n > 0; ++listidx) |
| 4444 | 3475 { |
| 3476 if (neglist->n > 0) | |
| 3477 { | |
| 3478 t = &neglist->t[0]; | |
| 4468 | 3479 neglist->n--; |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
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4547
diff
changeset
|
3480 listidx--; |
| 4444 | 3481 } |
| 3482 else | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3483 t = &thislist->t[listidx]; |
| 4444 | 3484 |
| 4460 | 3485 #ifdef NFA_REGEXP_DEBUG_LOG |
| 4444 | 3486 nfa_set_code(t->state->c); |
| 3487 fprintf(debug, "%s, ", code); | |
| 3488 #endif | |
| 3489 #ifdef ENABLE_LOG | |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
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4655
diff
changeset
|
3490 { |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
3491 int col; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
3492 |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
3493 if (t->sub.in_use <= 0) |
|
93b7ed814bec
updated for version 7.3.1076
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4655
diff
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|
3494 col = -1; |
|
93b7ed814bec
updated for version 7.3.1076
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diff
changeset
|
3495 else if (REG_MULTI) |
|
93b7ed814bec
updated for version 7.3.1076
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diff
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|
3496 col = t->sub.list.multi[0].start.col; |
|
93b7ed814bec
updated for version 7.3.1076
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diff
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|
3497 else |
|
93b7ed814bec
updated for version 7.3.1076
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diff
changeset
|
3498 col = (int)(t->sub.list.line[0].start - regline); |
|
93b7ed814bec
updated for version 7.3.1076
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4655
diff
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|
3499 nfa_set_code(t->state->c); |
|
93b7ed814bec
updated for version 7.3.1076
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4655
diff
changeset
|
3500 fprintf(log_fd, "(%d) char %d %s (start col %d) ... \n", |
|
93b7ed814bec
updated for version 7.3.1076
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diff
changeset
|
3501 abs(t->state->id), (int)t->state->c, code, col); |
|
93b7ed814bec
updated for version 7.3.1076
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diff
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|
3502 } |
| 4444 | 3503 #endif |
| 3504 | |
| 3505 /* | |
| 3506 * Handle the possible codes of the current state. | |
| 3507 * The most important is NFA_MATCH. | |
| 3508 */ | |
| 3509 switch (t->state->c) | |
| 3510 { | |
| 3511 case NFA_MATCH: | |
|
4567
96c1a7850097
updated for version 7.3.1031
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4565
diff
changeset
|
3512 { |
|
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
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4565
diff
changeset
|
3513 int j; |
|
96c1a7850097
updated for version 7.3.1031
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diff
changeset
|
3514 |
|
4561
4d81fdda8f35
updated for version 7.3.1028
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4559
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|
3515 nfa_match = TRUE; |
|
4563
e7016af0cbf9
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diff
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|
3516 submatch->in_use = t->sub.in_use; |
|
e7016af0cbf9
updated for version 7.3.1029
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|
3517 if (REG_MULTI) |
|
e7016af0cbf9
updated for version 7.3.1029
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diff
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|
3518 for (j = 0; j < submatch->in_use; j++) |
|
e7016af0cbf9
updated for version 7.3.1029
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|
3519 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
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4573
diff
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|
3520 submatch->list.multi[j].start = |
|
b22bff1a6af8
updated for version 7.3.1036
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4573
diff
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|
3521 t->sub.list.multi[j].start; |
|
b22bff1a6af8
updated for version 7.3.1036
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4573
diff
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|
3522 submatch->list.multi[j].end = t->sub.list.multi[j].end; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
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|
3523 } |
|
e7016af0cbf9
updated for version 7.3.1029
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|
3524 else |
|
e7016af0cbf9
updated for version 7.3.1029
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diff
changeset
|
3525 for (j = 0; j < submatch->in_use; j++) |
|
e7016af0cbf9
updated for version 7.3.1029
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|
3526 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
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4573
diff
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|
3527 submatch->list.line[j].start = |
|
b22bff1a6af8
updated for version 7.3.1036
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4573
diff
changeset
|
3528 t->sub.list.line[j].start; |
|
b22bff1a6af8
updated for version 7.3.1036
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4573
diff
changeset
|
3529 submatch->list.line[j].end = t->sub.list.line[j].end; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
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changeset
|
3530 } |
| 4444 | 3531 #ifdef ENABLE_LOG |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3532 log_subexpr(&t->sub); |
| 4444 | 3533 #endif |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3534 /* Found the left-most longest match, do not look at any other |
|
4553
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
3535 * states at this position. When the list of states is going |
|
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
3536 * to be empty quit without advancing, so that "reginput" is |
|
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
3537 * correct. */ |
|
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
3538 if (nextlist->n == 0 && neglist->n == 0) |
|
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
3539 clen = 0; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3540 goto nextchar; |
|
4567
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3541 } |
| 4444 | 3542 |
| 3543 case NFA_END_INVISIBLE: | |
| 3544 /* This is only encountered after a NFA_START_INVISIBLE node. | |
| 3545 * They surround a zero-width group, used with "\@=" and "\&". | |
| 3546 * If we got here, it means that the current "invisible" group | |
| 3547 * finished successfully, so return control to the parent | |
| 3548 * nfa_regmatch(). Submatches are stored in *m, and used in | |
| 3549 * the parent call. */ | |
| 3550 if (start->c == NFA_MOPEN + 0) | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3551 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3552 else |
| 3553 { | |
|
4661
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
3554 /* do not set submatches for \@! */ |
|
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
3555 if (!t->state->negated) |
|
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
3556 /* TODO: only copy positions in use. */ |
|
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
3557 *m = t->sub; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
3558 nfa_match = TRUE; |
| 4444 | 3559 } |
| 3560 break; | |
| 3561 | |
| 3562 case NFA_START_INVISIBLE: | |
| 3563 /* Save global variables, and call nfa_regmatch() to check if | |
| 3564 * the current concat matches at this position. The concat | |
| 3565 * ends with the node NFA_END_INVISIBLE */ | |
| 3566 old_reginput = reginput; | |
| 3567 old_regline = regline; | |
| 3568 old_reglnum = reglnum; | |
| 3569 if (listids == NULL) | |
| 3570 { | |
| 3571 listids = (int *) lalloc(sizeof(int) * nstate, TRUE); | |
| 3572 if (listids == NULL) | |
| 3573 { | |
| 3574 EMSG(_("E878: (NFA) Could not allocate memory for branch traversal!")); | |
| 3575 return 0; | |
| 3576 } | |
| 3577 } | |
| 3578 #ifdef ENABLE_LOG | |
| 3579 if (log_fd != stderr) | |
| 3580 fclose(log_fd); | |
| 3581 log_fd = NULL; | |
| 3582 #endif | |
| 3583 /* Have to clear the listid field of the NFA nodes, so that | |
| 3584 * nfa_regmatch() and addstate() can run properly after | |
| 3585 * recursion. */ | |
| 3586 nfa_save_listids(start, listids); | |
| 3587 nfa_set_null_listids(start); | |
| 3588 result = nfa_regmatch(t->state->out, submatch, m); | |
| 3589 nfa_set_neg_listids(start); | |
| 3590 nfa_restore_listids(start, listids); | |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3591 nfa_match = FALSE; |
| 4444 | 3592 |
| 3593 #ifdef ENABLE_LOG | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3594 log_fd = fopen(NFA_REGEXP_RUN_LOG, "a"); |
| 4444 | 3595 if (log_fd != NULL) |
| 3596 { | |
| 3597 fprintf(log_fd, "****************************\n"); | |
| 3598 fprintf(log_fd, "FINISHED RUNNING nfa_regmatch() recursively\n"); | |
| 3599 fprintf(log_fd, "MATCH = %s\n", result == TRUE ? "OK" : "FALSE"); | |
| 3600 fprintf(log_fd, "****************************\n"); | |
| 3601 } | |
| 3602 else | |
| 3603 { | |
| 3604 EMSG(_("Could not open temporary log file for writing, displaying on stderr ... ")); | |
| 3605 log_fd = stderr; | |
| 3606 } | |
| 3607 #endif | |
|
4661
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
3608 /* for \@! it is a match when result is FALSE */ |
|
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
3609 if (result != t->state->negated) |
| 4444 | 3610 { |
|
4567
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3611 int j; |
|
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3612 |
| 4444 | 3613 /* Restore position in input text */ |
| 3614 reginput = old_reginput; | |
| 3615 regline = old_regline; | |
| 3616 reglnum = old_reglnum; | |
| 3617 /* Copy submatch info from the recursive call */ | |
| 3618 if (REG_MULTI) | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3619 for (j = 1; j < m->in_use; j++) |
| 4444 | 3620 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3621 t->sub.list.multi[j].start = m->list.multi[j].start; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3622 t->sub.list.multi[j].end = m->list.multi[j].end; |
| 4444 | 3623 } |
| 3624 else | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3625 for (j = 1; j < m->in_use; j++) |
| 4444 | 3626 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3627 t->sub.list.line[j].start = m->list.line[j].start; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3628 t->sub.list.line[j].end = m->list.line[j].end; |
| 4444 | 3629 } |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3630 if (m->in_use > t->sub.in_use) |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3631 t->sub.in_use = m->in_use; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3632 |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3633 /* t->state->out1 is the corresponding END_INVISIBLE node; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3634 * Add it to the current list (zero-width match). */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3635 addstate_here(thislist, t->state->out1->out, &t->sub, |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3636 &listidx); |
| 4444 | 3637 } |
| 3638 else | |
| 3639 { | |
| 3640 /* continue with next input char */ | |
| 3641 reginput = old_reginput; | |
| 3642 } | |
| 3643 break; | |
| 3644 | |
| 3645 case NFA_BOL: | |
| 3646 if (reginput == regline) | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3647 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3648 break; |
| 3649 | |
| 3650 case NFA_EOL: | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3651 if (curc == NUL) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3652 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3653 break; |
| 3654 | |
| 3655 case NFA_BOW: | |
| 3656 { | |
| 3657 int bow = TRUE; | |
| 3658 | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3659 if (curc == NUL) |
| 4444 | 3660 bow = FALSE; |
| 3661 #ifdef FEAT_MBYTE | |
| 3662 else if (has_mbyte) | |
| 3663 { | |
| 3664 int this_class; | |
| 3665 | |
| 3666 /* Get class of current and previous char (if it exists). */ | |
| 4503 | 3667 this_class = mb_get_class_buf(reginput, reg_buf); |
| 4444 | 3668 if (this_class <= 1) |
| 3669 bow = FALSE; | |
| 3670 else if (reg_prev_class() == this_class) | |
| 3671 bow = FALSE; | |
| 3672 } | |
| 3673 #endif | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3674 else if (!vim_iswordc_buf(curc, reg_buf) |
| 4503 | 3675 || (reginput > regline |
| 3676 && vim_iswordc_buf(reginput[-1], reg_buf))) | |
| 4444 | 3677 bow = FALSE; |
| 3678 if (bow) | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3679 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3680 break; |
| 3681 } | |
| 3682 | |
| 3683 case NFA_EOW: | |
| 3684 { | |
| 3685 int eow = TRUE; | |
| 3686 | |
| 3687 if (reginput == regline) | |
| 3688 eow = FALSE; | |
| 3689 #ifdef FEAT_MBYTE | |
| 3690 else if (has_mbyte) | |
| 3691 { | |
| 3692 int this_class, prev_class; | |
| 3693 | |
| 3694 /* Get class of current and previous char (if it exists). */ | |
| 4503 | 3695 this_class = mb_get_class_buf(reginput, reg_buf); |
| 4444 | 3696 prev_class = reg_prev_class(); |
| 3697 if (this_class == prev_class | |
| 3698 || prev_class == 0 || prev_class == 1) | |
| 3699 eow = FALSE; | |
| 3700 } | |
| 3701 #endif | |
| 4503 | 3702 else if (!vim_iswordc_buf(reginput[-1], reg_buf) |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3703 || (reginput[0] != NUL |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3704 && vim_iswordc_buf(curc, reg_buf))) |
| 4444 | 3705 eow = FALSE; |
| 3706 if (eow) | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3707 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3708 break; |
| 3709 } | |
| 3710 | |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3711 #ifdef FEAT_MBYTE |
| 4444 | 3712 case NFA_COMPOSING: |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3713 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3714 int mc = curc; |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3715 int len = 0; |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3716 nfa_state_T *end; |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3717 nfa_state_T *sta; |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3718 int cchars[MAX_MCO]; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3719 int ccount = 0; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3720 int j; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3721 |
| 4444 | 3722 sta = t->state->out; |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3723 len = 0; |
|
4535
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3724 if (utf_iscomposing(sta->c)) |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3725 { |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3726 /* Only match composing character(s), ignore base |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3727 * character. Used for ".{composing}" and "{composing}" |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3728 * (no preceding character). */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3729 len += mb_char2len(mc); |
|
4535
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3730 } |
|
4551
f0c37f5cf4ea
updated for version 7.3.1023
Bram Moolenaar <bram@vim.org>
parents:
4549
diff
changeset
|
3731 if (ireg_icombine && len == 0) |
| 4444 | 3732 { |
|
4535
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3733 /* If \Z was present, then ignore composing characters. |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3734 * When ignoring the base character this always matches. */ |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3735 /* TODO: How about negated? */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3736 if (len == 0 && sta->c != curc) |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3737 result = FAIL; |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3738 else |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3739 result = OK; |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3740 while (sta->c != NFA_END_COMPOSING) |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3741 sta = sta->out; |
| 4444 | 3742 } |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3743 |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3744 /* Check base character matches first, unless ignored. */ |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3745 else if (len > 0 || mc == sta->c) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3746 { |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3747 if (len == 0) |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3748 { |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3749 len += mb_char2len(mc); |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3750 sta = sta->out; |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3751 } |
| 4444 | 3752 |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3753 /* We don't care about the order of composing characters. |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3754 * Get them into cchars[] first. */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3755 while (len < clen) |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3756 { |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3757 mc = mb_ptr2char(reginput + len); |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3758 cchars[ccount++] = mc; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3759 len += mb_char2len(mc); |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3760 if (ccount == MAX_MCO) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3761 break; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3762 } |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3763 |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3764 /* Check that each composing char in the pattern matches a |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3765 * composing char in the text. We do not check if all |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3766 * composing chars are matched. */ |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3767 result = OK; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3768 while (sta->c != NFA_END_COMPOSING) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3769 { |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3770 for (j = 0; j < ccount; ++j) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3771 if (cchars[j] == sta->c) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3772 break; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3773 if (j == ccount) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3774 { |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3775 result = FAIL; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3776 break; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3777 } |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3778 sta = sta->out; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3779 } |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3780 } |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3781 else |
|
4525
36ddcf4cecbc
updated for version 7.3.1010
Bram Moolenaar <bram@vim.org>
parents:
4517
diff
changeset
|
3782 result = FAIL; |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3783 |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3784 end = t->state->out1; /* NFA_END_COMPOSING */ |
| 4444 | 3785 ADD_POS_NEG_STATE(end); |
| 3786 break; | |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3787 } |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3788 #endif |
| 4444 | 3789 |
| 3790 case NFA_NEWL: | |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3791 if (curc == NUL && !reg_line_lbr && REG_MULTI |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3792 && reglnum <= reg_maxline) |
| 4444 | 3793 { |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3794 go_to_nextline = TRUE; |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3795 /* Pass -1 for the offset, which means taking the position |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3796 * at the start of the next line. */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3797 addstate(nextlist, t->state->out, &t->sub, -1); |
| 4444 | 3798 } |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3799 else if (curc == '\n' && reg_line_lbr) |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3800 { |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3801 /* match \n as if it is an ordinary character */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3802 addstate(nextlist, t->state->out, &t->sub, 1); |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3803 } |
| 4444 | 3804 break; |
| 3805 | |
| 3806 case NFA_CLASS_ALNUM: | |
| 3807 case NFA_CLASS_ALPHA: | |
| 3808 case NFA_CLASS_BLANK: | |
| 3809 case NFA_CLASS_CNTRL: | |
| 3810 case NFA_CLASS_DIGIT: | |
| 3811 case NFA_CLASS_GRAPH: | |
| 3812 case NFA_CLASS_LOWER: | |
| 3813 case NFA_CLASS_PRINT: | |
| 3814 case NFA_CLASS_PUNCT: | |
| 3815 case NFA_CLASS_SPACE: | |
| 3816 case NFA_CLASS_UPPER: | |
| 3817 case NFA_CLASS_XDIGIT: | |
| 3818 case NFA_CLASS_TAB: | |
| 3819 case NFA_CLASS_RETURN: | |
| 3820 case NFA_CLASS_BACKSPACE: | |
| 3821 case NFA_CLASS_ESCAPE: | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3822 result = check_char_class(t->state->c, curc); |
| 4444 | 3823 ADD_POS_NEG_STATE(t->state); |
| 3824 break; | |
| 3825 | |
| 3826 case NFA_END_NEG_RANGE: | |
| 3827 /* This follows a series of negated nodes, like: | |
| 3828 * CHAR(x), NFA_NOT, CHAR(y), NFA_NOT etc. */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3829 if (curc > 0) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3830 addstate(nextlist, t->state->out, &t->sub, clen); |
| 4444 | 3831 break; |
| 3832 | |
| 3833 case NFA_ANY: | |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3834 /* Any char except '\0', (end of input) does not match. */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3835 if (curc > 0) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3836 addstate(nextlist, t->state->out, &t->sub, clen); |
| 4444 | 3837 break; |
| 3838 | |
| 3839 /* | |
| 3840 * Character classes like \a for alpha, \d for digit etc. | |
| 3841 */ | |
| 3842 case NFA_IDENT: /* \i */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3843 result = vim_isIDc(curc); |
| 4444 | 3844 ADD_POS_NEG_STATE(t->state); |
| 3845 break; | |
| 3846 | |
| 3847 case NFA_SIDENT: /* \I */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3848 result = !VIM_ISDIGIT(curc) && vim_isIDc(curc); |
| 4444 | 3849 ADD_POS_NEG_STATE(t->state); |
| 3850 break; | |
| 3851 | |
| 3852 case NFA_KWORD: /* \k */ | |
| 4503 | 3853 result = vim_iswordp_buf(reginput, reg_buf); |
| 4444 | 3854 ADD_POS_NEG_STATE(t->state); |
| 3855 break; | |
| 3856 | |
| 3857 case NFA_SKWORD: /* \K */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3858 result = !VIM_ISDIGIT(curc) |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3859 && vim_iswordp_buf(reginput, reg_buf); |
| 4444 | 3860 ADD_POS_NEG_STATE(t->state); |
| 3861 break; | |
| 3862 | |
| 3863 case NFA_FNAME: /* \f */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3864 result = vim_isfilec(curc); |
| 4444 | 3865 ADD_POS_NEG_STATE(t->state); |
| 3866 break; | |
| 3867 | |
| 3868 case NFA_SFNAME: /* \F */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3869 result = !VIM_ISDIGIT(curc) && vim_isfilec(curc); |
| 4444 | 3870 ADD_POS_NEG_STATE(t->state); |
| 3871 break; | |
| 3872 | |
| 3873 case NFA_PRINT: /* \p */ | |
| 4470 | 3874 result = ptr2cells(reginput) == 1; |
| 4444 | 3875 ADD_POS_NEG_STATE(t->state); |
| 3876 break; | |
| 3877 | |
| 3878 case NFA_SPRINT: /* \P */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3879 result = !VIM_ISDIGIT(curc) && ptr2cells(reginput) == 1; |
| 4444 | 3880 ADD_POS_NEG_STATE(t->state); |
| 3881 break; | |
| 3882 | |
| 3883 case NFA_WHITE: /* \s */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3884 result = vim_iswhite(curc); |
| 4444 | 3885 ADD_POS_NEG_STATE(t->state); |
| 3886 break; | |
| 3887 | |
| 3888 case NFA_NWHITE: /* \S */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3889 result = curc != NUL && !vim_iswhite(curc); |
| 4444 | 3890 ADD_POS_NEG_STATE(t->state); |
| 3891 break; | |
| 3892 | |
| 3893 case NFA_DIGIT: /* \d */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3894 result = ri_digit(curc); |
| 4444 | 3895 ADD_POS_NEG_STATE(t->state); |
| 3896 break; | |
| 3897 | |
| 3898 case NFA_NDIGIT: /* \D */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3899 result = curc != NUL && !ri_digit(curc); |
| 4444 | 3900 ADD_POS_NEG_STATE(t->state); |
| 3901 break; | |
| 3902 | |
| 3903 case NFA_HEX: /* \x */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3904 result = ri_hex(curc); |
| 4444 | 3905 ADD_POS_NEG_STATE(t->state); |
| 3906 break; | |
| 3907 | |
| 3908 case NFA_NHEX: /* \X */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3909 result = curc != NUL && !ri_hex(curc); |
| 4444 | 3910 ADD_POS_NEG_STATE(t->state); |
| 3911 break; | |
| 3912 | |
| 3913 case NFA_OCTAL: /* \o */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3914 result = ri_octal(curc); |
| 4444 | 3915 ADD_POS_NEG_STATE(t->state); |
| 3916 break; | |
| 3917 | |
| 3918 case NFA_NOCTAL: /* \O */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3919 result = curc != NUL && !ri_octal(curc); |
| 4444 | 3920 ADD_POS_NEG_STATE(t->state); |
| 3921 break; | |
| 3922 | |
| 3923 case NFA_WORD: /* \w */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3924 result = ri_word(curc); |
| 4444 | 3925 ADD_POS_NEG_STATE(t->state); |
| 3926 break; | |
| 3927 | |
| 3928 case NFA_NWORD: /* \W */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3929 result = curc != NUL && !ri_word(curc); |
| 4444 | 3930 ADD_POS_NEG_STATE(t->state); |
| 3931 break; | |
| 3932 | |
| 3933 case NFA_HEAD: /* \h */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3934 result = ri_head(curc); |
| 4444 | 3935 ADD_POS_NEG_STATE(t->state); |
| 3936 break; | |
| 3937 | |
| 3938 case NFA_NHEAD: /* \H */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3939 result = curc != NUL && !ri_head(curc); |
| 4444 | 3940 ADD_POS_NEG_STATE(t->state); |
| 3941 break; | |
| 3942 | |
| 3943 case NFA_ALPHA: /* \a */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3944 result = ri_alpha(curc); |
| 4444 | 3945 ADD_POS_NEG_STATE(t->state); |
| 3946 break; | |
| 3947 | |
| 3948 case NFA_NALPHA: /* \A */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3949 result = curc != NUL && !ri_alpha(curc); |
| 4444 | 3950 ADD_POS_NEG_STATE(t->state); |
| 3951 break; | |
| 3952 | |
| 3953 case NFA_LOWER: /* \l */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3954 result = ri_lower(curc); |
| 4444 | 3955 ADD_POS_NEG_STATE(t->state); |
| 3956 break; | |
| 3957 | |
| 3958 case NFA_NLOWER: /* \L */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3959 result = curc != NUL && !ri_lower(curc); |
| 4444 | 3960 ADD_POS_NEG_STATE(t->state); |
| 3961 break; | |
| 3962 | |
| 3963 case NFA_UPPER: /* \u */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3964 result = ri_upper(curc); |
| 4444 | 3965 ADD_POS_NEG_STATE(t->state); |
| 3966 break; | |
| 3967 | |
| 3968 case NFA_NUPPER: /* \U */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3969 result = curc != NUL && !ri_upper(curc); |
| 4444 | 3970 ADD_POS_NEG_STATE(t->state); |
| 3971 break; | |
| 3972 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3973 case NFA_BACKREF1: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3974 case NFA_BACKREF2: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3975 case NFA_BACKREF3: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3976 case NFA_BACKREF4: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3977 case NFA_BACKREF5: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3978 case NFA_BACKREF6: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3979 case NFA_BACKREF7: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3980 case NFA_BACKREF8: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3981 case NFA_BACKREF9: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3982 /* \1 .. \9 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3983 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3984 int subidx = t->state->c - NFA_BACKREF1 + 1; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3985 int bytelen; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3986 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3987 result = match_backref(&t->sub, subidx, &bytelen); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3988 if (result) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3989 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3990 if (bytelen == 0) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3991 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3992 /* empty match always works, add NFA_SKIP with zero to |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3993 * be used next */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3994 addstate_here(thislist, t->state->out, &t->sub, |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3995 &listidx); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3996 thislist->t[listidx + 1].count = 0; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3997 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3998 else if (bytelen <= clen) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3999 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4000 /* match current character, jump ahead to out of |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4001 * NFA_SKIP */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4002 addstate(nextlist, t->state->out->out, &t->sub, clen); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4003 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4004 log_subexpr(&nextlist->t[nextlist->n - 1].sub); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4005 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4006 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4007 else |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4008 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4009 /* skip ofer the matched characters, set character |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4010 * count in NFA_SKIP */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4011 addstate(nextlist, t->state->out, &t->sub, bytelen); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4012 nextlist->t[nextlist->n - 1].count = bytelen - clen; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4013 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4014 log_subexpr(&nextlist->t[nextlist->n - 1].sub); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4015 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4016 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4017 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4018 } |
| 4482 | 4019 break; |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4020 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4021 case NFA_SKIP: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4022 /* charater of previous matching \1 .. \9 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4023 if (t->count - clen <= 0) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4024 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4025 /* end of match, go to what follows */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4026 addstate(nextlist, t->state->out, &t->sub, clen); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4027 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4028 log_subexpr(&nextlist->t[nextlist->n - 1].sub); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4029 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4030 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4031 else |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4032 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4033 /* add state again with decremented count */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4034 addstate(nextlist, t->state, &t->sub, 0); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4035 nextlist->t[nextlist->n - 1].count = t->count - clen; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4036 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4037 log_subexpr(&nextlist->t[nextlist->n - 1].sub); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4038 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4039 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4040 break; |
| 4482 | 4041 |
| 4042 case NFA_SKIP_CHAR: | |
| 4043 case NFA_ZSTART: | |
|
4569
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
4044 case NFA_ZEND: |
| 4482 | 4045 /* TODO: should not happen? */ |
| 4046 break; | |
| 4047 | |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4048 case NFA_LNUM: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4049 case NFA_LNUM_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4050 case NFA_LNUM_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4051 result = (REG_MULTI && |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4052 nfa_re_num_cmp(t->state->val, t->state->c - NFA_LNUM, |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4053 (long_u)(reglnum + reg_firstlnum))); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4054 if (result) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4055 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4056 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4057 |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4058 case NFA_COL: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4059 case NFA_COL_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4060 case NFA_COL_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4061 result = nfa_re_num_cmp(t->state->val, t->state->c - NFA_COL, |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4062 (long_u)(reginput - regline) + 1); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4063 if (result) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4064 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4065 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4066 |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4067 case NFA_VCOL: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4068 case NFA_VCOL_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4069 case NFA_VCOL_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4070 result = nfa_re_num_cmp(t->state->val, t->state->c - NFA_VCOL, |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4071 (long_u)win_linetabsize( |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4072 reg_win == NULL ? curwin : reg_win, |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4073 regline, (colnr_T)(reginput - regline)) + 1); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4074 if (result) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4075 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4076 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4077 |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4078 case NFA_CURSOR: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4079 result = (reg_win != NULL |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4080 && (reglnum + reg_firstlnum == reg_win->w_cursor.lnum) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4081 && ((colnr_T)(reginput - regline) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4082 == reg_win->w_cursor.col)); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4083 if (result) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4084 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4085 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4086 |
| 4444 | 4087 default: /* regular character */ |
|
4559
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4088 { |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4089 int c = t->state->c; |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4090 |
| 4482 | 4091 /* TODO: put this in #ifdef later */ |
|
4559
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4092 if (c < -256) |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4093 EMSGN("INTERNAL: Negative state char: %ld", c); |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4094 if (is_Magic(c)) |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4095 c = un_Magic(c); |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4096 result = (c == curc); |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4097 |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4098 if (!result && ireg_ic) |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4099 result = MB_TOLOWER(c) == MB_TOLOWER(curc); |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4100 #ifdef FEAT_MBYTE |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4101 /* If there is a composing character which is not being |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4102 * ignored there can be no match. Match with composing |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4103 * character uses NFA_COMPOSING above. */ |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4104 if (result && enc_utf8 && !ireg_icombine |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4105 && clen != utf_char2len(curc)) |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4106 result = FALSE; |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4107 #endif |
| 4444 | 4108 ADD_POS_NEG_STATE(t->state); |
| 4109 break; | |
|
4559
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4110 } |
| 4444 | 4111 } |
| 4112 | |
| 4113 } /* for (thislist = thislist; thislist->state; thislist++) */ | |
| 4114 | |
|
4557
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4115 /* Look for the start of a match in the current position by adding the |
|
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4116 * start state to the list of states. |
|
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4117 * The first found match is the leftmost one, thus the order of states |
|
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4118 * matters! |
|
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4119 * Do not add the start state in recursive calls of nfa_regmatch(), |
|
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4120 * because recursive calls should only start in the first position. |
|
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4121 * Also don't start a match past the first line. */ |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
4122 if (nfa_match == FALSE && start->c == NFA_MOPEN + 0 |
|
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
4123 && reglnum == 0 && clen != 0 |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
4124 && (ireg_maxcol == 0 |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
4125 || (colnr_T)(reginput - regline) < ireg_maxcol)) |
| 4444 | 4126 { |
| 4127 #ifdef ENABLE_LOG | |
| 4128 fprintf(log_fd, "(---) STARTSTATE\n"); | |
| 4129 #endif | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4130 addstate(nextlist, start, m, clen); |
| 4444 | 4131 } |
| 4132 | |
| 4133 #ifdef ENABLE_LOG | |
| 4134 fprintf(log_fd, ">>> Thislist had %d states available: ", thislist->n); | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4135 { |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4136 int i; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4137 |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4138 for (i = 0; i < thislist->n; i++) |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4139 fprintf(log_fd, "%d ", abs(thislist->t[i].state->id)); |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4140 } |
| 4444 | 4141 fprintf(log_fd, "\n"); |
| 4142 #endif | |
| 4143 | |
| 4144 nextchar: | |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4145 /* Advance to the next character, or advance to the next line, or |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4146 * finish. */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4147 if (clen != 0) |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4148 reginput += clen; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4149 else if (go_to_nextline) |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4150 reg_nextline(); |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4151 else |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4152 break; |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4153 } |
| 4444 | 4154 |
| 4155 #ifdef ENABLE_LOG | |
| 4156 if (log_fd != stderr) | |
| 4157 fclose(log_fd); | |
| 4158 log_fd = NULL; | |
| 4159 #endif | |
| 4160 | |
| 4161 theend: | |
| 4162 /* Free memory */ | |
| 4163 vim_free(list[0].t); | |
| 4164 vim_free(list[1].t); | |
| 4165 vim_free(list[2].t); | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
4166 vim_free(listids); |
| 4444 | 4167 #undef ADD_POS_NEG_STATE |
| 4460 | 4168 #ifdef NFA_REGEXP_DEBUG_LOG |
| 4444 | 4169 fclose(debug); |
| 4170 #endif | |
| 4171 | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
4172 return nfa_match; |
| 4444 | 4173 } |
| 4174 | |
| 4175 /* | |
| 4176 * Try match of "prog" with at regline["col"]. | |
| 4177 * Returns 0 for failure, number of lines contained in the match otherwise. | |
| 4178 */ | |
| 4179 static long | |
| 4180 nfa_regtry(start, col) | |
| 4181 nfa_state_T *start; | |
| 4182 colnr_T col; | |
| 4183 { | |
| 4184 int i; | |
| 4185 regsub_T sub, m; | |
| 4186 #ifdef ENABLE_LOG | |
| 4187 FILE *f; | |
| 4188 #endif | |
| 4189 | |
| 4190 reginput = regline + col; | |
| 4191 need_clear_subexpr = TRUE; | |
| 4192 | |
| 4193 #ifdef ENABLE_LOG | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
4194 f = fopen(NFA_REGEXP_RUN_LOG, "a"); |
| 4444 | 4195 if (f != NULL) |
| 4196 { | |
| 4197 fprintf(f, "\n\n\n\n\n\n\t\t=======================================================\n"); | |
| 4198 fprintf(f, " =======================================================\n"); | |
| 4199 #ifdef DEBUG | |
| 4200 fprintf(f, "\tRegexp is \"%s\"\n", nfa_regengine.expr); | |
| 4201 #endif | |
| 4202 fprintf(f, "\tInput text is \"%s\" \n", reginput); | |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
4203 fprintf(f, " =======================================================\n\n"); |
|
4533
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
4204 nfa_print_state(f, start); |
| 4444 | 4205 fprintf(f, "\n\n"); |
| 4206 fclose(f); | |
| 4207 } | |
| 4208 else | |
| 4209 EMSG(_("Could not open temporary log file for writing ")); | |
| 4210 #endif | |
| 4211 | |
| 4212 if (REG_MULTI) | |
| 4213 { | |
| 4214 /* Use 0xff to set lnum to -1 */ | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4215 vim_memset(sub.list.multi, 0xff, sizeof(struct multipos) * nfa_nsubexpr); |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4216 vim_memset(m.list.multi, 0xff, sizeof(struct multipos) * nfa_nsubexpr); |
| 4444 | 4217 } |
| 4218 else | |
| 4219 { | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4220 vim_memset(sub.list.line, 0, sizeof(struct linepos) * nfa_nsubexpr); |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4221 vim_memset(m.list.line, 0, sizeof(struct linepos) * nfa_nsubexpr); |
| 4444 | 4222 } |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
4223 sub.in_use = 0; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
4224 m.in_use = 0; |
| 4444 | 4225 |
| 4226 if (nfa_regmatch(start, &sub, &m) == FALSE) | |
| 4227 return 0; | |
| 4228 | |
| 4229 cleanup_subexpr(); | |
| 4230 if (REG_MULTI) | |
| 4231 { | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
4232 for (i = 0; i < sub.in_use; i++) |
| 4444 | 4233 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4234 reg_startpos[i] = sub.list.multi[i].start; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4235 reg_endpos[i] = sub.list.multi[i].end; |
| 4444 | 4236 } |
| 4237 | |
| 4238 if (reg_startpos[0].lnum < 0) | |
| 4239 { | |
| 4240 reg_startpos[0].lnum = 0; | |
| 4241 reg_startpos[0].col = col; | |
| 4242 } | |
| 4243 if (reg_endpos[0].lnum < 0) | |
| 4244 { | |
|
4569
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
4245 /* pattern has a \ze but it didn't match, use current end */ |
| 4444 | 4246 reg_endpos[0].lnum = reglnum; |
| 4247 reg_endpos[0].col = (int)(reginput - regline); | |
| 4248 } | |
| 4249 else | |
| 4250 /* Use line number of "\ze". */ | |
| 4251 reglnum = reg_endpos[0].lnum; | |
| 4252 } | |
| 4253 else | |
| 4254 { | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
4255 for (i = 0; i < sub.in_use; i++) |
| 4444 | 4256 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4257 reg_startp[i] = sub.list.line[i].start; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4258 reg_endp[i] = sub.list.line[i].end; |
| 4444 | 4259 } |
| 4260 | |
| 4261 if (reg_startp[0] == NULL) | |
| 4262 reg_startp[0] = regline + col; | |
| 4263 if (reg_endp[0] == NULL) | |
| 4264 reg_endp[0] = reginput; | |
| 4265 } | |
| 4266 | |
| 4267 return 1 + reglnum; | |
| 4268 } | |
| 4269 | |
| 4270 /* | |
| 4271 * Match a regexp against a string ("line" points to the string) or multiple | |
| 4272 * lines ("line" is NULL, use reg_getline()). | |
| 4273 * | |
| 4274 * Returns 0 for failure, number of lines contained in the match otherwise. | |
| 4275 */ | |
| 4276 static long | |
| 4277 nfa_regexec_both(line, col) | |
| 4278 char_u *line; | |
| 4279 colnr_T col; /* column to start looking for match */ | |
| 4280 { | |
| 4281 nfa_regprog_T *prog; | |
| 4282 long retval = 0L; | |
| 4283 int i; | |
| 4284 | |
| 4285 if (REG_MULTI) | |
| 4286 { | |
| 4287 prog = (nfa_regprog_T *)reg_mmatch->regprog; | |
| 4288 line = reg_getline((linenr_T)0); /* relative to the cursor */ | |
| 4289 reg_startpos = reg_mmatch->startpos; | |
| 4290 reg_endpos = reg_mmatch->endpos; | |
| 4291 } | |
| 4292 else | |
| 4293 { | |
| 4294 prog = (nfa_regprog_T *)reg_match->regprog; | |
| 4295 reg_startp = reg_match->startp; | |
| 4296 reg_endp = reg_match->endp; | |
| 4297 } | |
| 4298 | |
| 4299 /* Be paranoid... */ | |
| 4300 if (prog == NULL || line == NULL) | |
| 4301 { | |
| 4302 EMSG(_(e_null)); | |
| 4303 goto theend; | |
| 4304 } | |
| 4305 | |
| 4306 /* If the start column is past the maximum column: no need to try. */ | |
| 4307 if (ireg_maxcol > 0 && col >= ireg_maxcol) | |
| 4308 goto theend; | |
| 4309 | |
| 4310 /* If pattern contains "\c" or "\C": overrule value of ireg_ic */ | |
| 4311 if (prog->regflags & RF_ICASE) | |
| 4312 ireg_ic = TRUE; | |
| 4313 else if (prog->regflags & RF_NOICASE) | |
| 4314 ireg_ic = FALSE; | |
| 4315 | |
| 4316 #ifdef FEAT_MBYTE | |
| 4317 /* If pattern contains "\Z" overrule value of ireg_icombine */ | |
| 4318 if (prog->regflags & RF_ICOMBINE) | |
| 4319 ireg_icombine = TRUE; | |
| 4320 #endif | |
| 4321 | |
| 4322 regline = line; | |
| 4323 reglnum = 0; /* relative to line */ | |
| 4324 | |
|
4553
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
4325 nfa_has_zend = prog->has_zend; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
4326 nfa_has_backref = prog->has_backref; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
4327 nfa_nsubexpr = prog->nsubexp; |
|
4553
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
4328 |
| 4444 | 4329 nstate = prog->nstate; |
| 4330 for (i = 0; i < nstate; ++i) | |
| 4331 { | |
| 4332 prog->state[i].id = i; | |
| 4333 prog->state[i].lastlist = 0; | |
| 4334 } | |
| 4335 | |
| 4336 retval = nfa_regtry(prog->start, col); | |
| 4337 | |
| 4338 theend: | |
| 4339 return retval; | |
| 4340 } | |
| 4341 | |
| 4342 /* | |
| 4343 * Compile a regular expression into internal code for the NFA matcher. | |
| 4344 * Returns the program in allocated space. Returns NULL for an error. | |
| 4345 */ | |
| 4346 static regprog_T * | |
| 4347 nfa_regcomp(expr, re_flags) | |
| 4348 char_u *expr; | |
| 4349 int re_flags; | |
| 4350 { | |
|
4541
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4351 nfa_regprog_T *prog = NULL; |
| 4458 | 4352 size_t prog_size; |
| 4444 | 4353 int *postfix; |
| 4354 | |
| 4355 if (expr == NULL) | |
| 4356 return NULL; | |
| 4357 | |
| 4358 #ifdef DEBUG | |
| 4359 nfa_regengine.expr = expr; | |
| 4360 #endif | |
| 4361 | |
| 4362 init_class_tab(); | |
| 4363 | |
| 4364 if (nfa_regcomp_start(expr, re_flags) == FAIL) | |
| 4365 return NULL; | |
| 4366 | |
| 4367 /* Build postfix form of the regexp. Needed to build the NFA | |
|
4541
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4368 * (and count its size). */ |
| 4444 | 4369 postfix = re2post(); |
| 4370 if (postfix == NULL) | |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4371 { |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4372 /* TODO: only give this error for debugging? */ |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4373 if (post_ptr >= post_end) |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4374 EMSGN("Internal error: estimated max number of states insufficient: %ld", post_end - post_start); |
| 4444 | 4375 goto fail; /* Cascaded (syntax?) error */ |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4376 } |
| 4444 | 4377 |
| 4378 /* | |
| 4379 * In order to build the NFA, we parse the input regexp twice: | |
| 4380 * 1. first pass to count size (so we can allocate space) | |
| 4381 * 2. second to emit code | |
| 4382 */ | |
| 4383 #ifdef ENABLE_LOG | |
| 4384 { | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
4385 FILE *f = fopen(NFA_REGEXP_RUN_LOG, "a"); |
| 4444 | 4386 |
| 4387 if (f != NULL) | |
| 4388 { | |
| 4389 fprintf(f, "\n*****************************\n\n\n\n\tCompiling regexp \"%s\" ... hold on !\n", expr); | |
| 4390 fclose(f); | |
| 4391 } | |
| 4392 } | |
| 4393 #endif | |
| 4394 | |
| 4395 /* | |
| 4396 * PASS 1 | |
| 4397 * Count number of NFA states in "nstate". Do not build the NFA. | |
| 4398 */ | |
| 4399 post2nfa(postfix, post_ptr, TRUE); | |
|
4541
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4400 |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4401 /* Space for compiled regexp */ |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4402 prog_size = sizeof(nfa_regprog_T) + sizeof(nfa_state_T) * nstate; |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4403 prog = (nfa_regprog_T *)lalloc(prog_size, TRUE); |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4404 if (prog == NULL) |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4405 goto fail; |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4406 vim_memset(prog, 0, prog_size); |
| 4444 | 4407 state_ptr = prog->state; |
| 4408 | |
| 4409 /* | |
| 4410 * PASS 2 | |
| 4411 * Build the NFA | |
| 4412 */ | |
| 4413 prog->start = post2nfa(postfix, post_ptr, FALSE); | |
| 4414 if (prog->start == NULL) | |
| 4415 goto fail; | |
| 4416 | |
| 4417 prog->regflags = regflags; | |
| 4418 prog->engine = &nfa_regengine; | |
| 4419 prog->nstate = nstate; | |
|
4553
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
4420 prog->has_zend = nfa_has_zend; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
4421 prog->has_backref = nfa_has_backref; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
4422 prog->nsubexp = regnpar; |
| 4444 | 4423 #ifdef ENABLE_LOG |
| 4424 nfa_postfix_dump(expr, OK); | |
| 4425 nfa_dump(prog); | |
| 4426 #endif | |
| 4427 | |
| 4428 out: | |
| 4429 vim_free(post_start); | |
| 4430 post_start = post_ptr = post_end = NULL; | |
| 4431 state_ptr = NULL; | |
| 4432 return (regprog_T *)prog; | |
| 4433 | |
| 4434 fail: | |
| 4435 vim_free(prog); | |
| 4436 prog = NULL; | |
| 4437 #ifdef ENABLE_LOG | |
| 4438 nfa_postfix_dump(expr, FAIL); | |
| 4439 #endif | |
| 4440 #ifdef DEBUG | |
| 4441 nfa_regengine.expr = NULL; | |
| 4442 #endif | |
| 4443 goto out; | |
| 4444 } | |
| 4445 | |
| 4446 | |
| 4447 /* | |
| 4448 * Match a regexp against a string. | |
| 4449 * "rmp->regprog" is a compiled regexp as returned by nfa_regcomp(). | |
| 4450 * Uses curbuf for line count and 'iskeyword'. | |
| 4451 * | |
| 4452 * Return TRUE if there is a match, FALSE if not. | |
| 4453 */ | |
| 4454 static int | |
| 4455 nfa_regexec(rmp, line, col) | |
| 4456 regmatch_T *rmp; | |
| 4457 char_u *line; /* string to match against */ | |
| 4458 colnr_T col; /* column to start looking for match */ | |
| 4459 { | |
| 4460 reg_match = rmp; | |
| 4461 reg_mmatch = NULL; | |
| 4462 reg_maxline = 0; | |
| 4463 reg_line_lbr = FALSE; | |
| 4464 reg_buf = curbuf; | |
| 4465 reg_win = NULL; | |
| 4466 ireg_ic = rmp->rm_ic; | |
| 4467 #ifdef FEAT_MBYTE | |
| 4468 ireg_icombine = FALSE; | |
| 4469 #endif | |
| 4470 ireg_maxcol = 0; | |
| 4471 return (nfa_regexec_both(line, col) != 0); | |
| 4472 } | |
| 4473 | |
| 4474 #if defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) \ | |
| 4475 || defined(FIND_REPLACE_DIALOG) || defined(PROTO) | |
| 4476 | |
| 4477 static int nfa_regexec_nl __ARGS((regmatch_T *rmp, char_u *line, colnr_T col)); | |
| 4478 | |
| 4479 /* | |
| 4480 * Like nfa_regexec(), but consider a "\n" in "line" to be a line break. | |
| 4481 */ | |
| 4482 static int | |
| 4483 nfa_regexec_nl(rmp, line, col) | |
| 4484 regmatch_T *rmp; | |
| 4485 char_u *line; /* string to match against */ | |
| 4486 colnr_T col; /* column to start looking for match */ | |
| 4487 { | |
| 4488 reg_match = rmp; | |
| 4489 reg_mmatch = NULL; | |
| 4490 reg_maxline = 0; | |
| 4491 reg_line_lbr = TRUE; | |
| 4492 reg_buf = curbuf; | |
| 4493 reg_win = NULL; | |
| 4494 ireg_ic = rmp->rm_ic; | |
| 4495 #ifdef FEAT_MBYTE | |
| 4496 ireg_icombine = FALSE; | |
| 4497 #endif | |
| 4498 ireg_maxcol = 0; | |
| 4499 return (nfa_regexec_both(line, col) != 0); | |
| 4500 } | |
| 4501 #endif | |
| 4502 | |
| 4503 | |
| 4504 /* | |
| 4505 * Match a regexp against multiple lines. | |
| 4506 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
| 4507 * Uses curbuf for line count and 'iskeyword'. | |
| 4508 * | |
| 4509 * Return zero if there is no match. Return number of lines contained in the | |
| 4510 * match otherwise. | |
| 4511 * | |
| 4512 * Note: the body is the same as bt_regexec() except for nfa_regexec_both() | |
| 4513 * | |
| 4514 * ! Also NOTE : match may actually be in another line. e.g.: | |
| 4515 * when r.e. is \nc, cursor is at 'a' and the text buffer looks like | |
| 4516 * | |
| 4517 * +-------------------------+ | |
| 4518 * |a | | |
| 4519 * |b | | |
| 4520 * |c | | |
| 4521 * | | | |
| 4522 * +-------------------------+ | |
| 4523 * | |
| 4524 * then nfa_regexec_multi() returns 3. while the original | |
| 4525 * vim_regexec_multi() returns 0 and a second call at line 2 will return 2. | |
| 4526 * | |
| 4527 * FIXME if this behavior is not compatible. | |
| 4528 */ | |
| 4529 static long | |
| 4530 nfa_regexec_multi(rmp, win, buf, lnum, col, tm) | |
| 4531 regmmatch_T *rmp; | |
| 4532 win_T *win; /* window in which to search or NULL */ | |
| 4533 buf_T *buf; /* buffer in which to search */ | |
| 4534 linenr_T lnum; /* nr of line to start looking for match */ | |
| 4535 colnr_T col; /* column to start looking for match */ | |
| 4536 proftime_T *tm UNUSED; /* timeout limit or NULL */ | |
| 4537 { | |
| 4538 reg_match = NULL; | |
| 4539 reg_mmatch = rmp; | |
| 4540 reg_buf = buf; | |
| 4541 reg_win = win; | |
| 4542 reg_firstlnum = lnum; | |
| 4543 reg_maxline = reg_buf->b_ml.ml_line_count - lnum; | |
| 4544 reg_line_lbr = FALSE; | |
| 4545 ireg_ic = rmp->rmm_ic; | |
| 4546 #ifdef FEAT_MBYTE | |
| 4547 ireg_icombine = FALSE; | |
| 4548 #endif | |
| 4549 ireg_maxcol = rmp->rmm_maxcol; | |
| 4550 | |
| 4503 | 4551 return nfa_regexec_both(NULL, col); |
| 4444 | 4552 } |
| 4553 | |
| 4554 #ifdef DEBUG | |
| 4555 # undef ENABLE_LOG | |
| 4556 #endif |