Mercurial > vim
annotate src/regexp_nfa.c @ 4647:857f6c53f117 v7.3.1071
updated for version 7.3.1071
Problem: New regexp engine: backreferences don't work correctly.
Solution: Add every possible start/end position on the state stack.
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Thu, 30 May 2013 17:05:39 +0200 |
| parents | 5679b8ddd8cc |
| children | 9f502d8d5165 |
| rev | line source |
|---|---|
| 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 | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
8 /* |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
9 * Logging of NFA engine. |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
10 * |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
11 * The NFA engine can write four log files: |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
12 * - Error log: Contains NFA engine's fatal errors. |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
13 * - Dump log: Contains compiled NFA state machine's information. |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
14 * - Run log: Contains information of matching procedure. |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
15 * - Debug log: Contains detailed information of matching procedure. Can be |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
16 * disabled by undefining NFA_REGEXP_DEBUG_LOG. |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
17 * The first one can also be used without debug mode. |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
18 * The last three are enabled when compiled as debug mode and individually |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
19 * disabled by commenting them out. |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
20 * The log files can get quite big! |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
21 * Do disable all of this when compiling Vim for debugging, undefine DEBUG in |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
22 * regexp.c |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
23 */ |
| 4444 | 24 #ifdef DEBUG |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
25 # define NFA_REGEXP_ERROR_LOG "nfa_regexp_error.log" |
| 4444 | 26 # define ENABLE_LOG |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
27 # define NFA_REGEXP_DUMP_LOG "nfa_regexp_dump.log" |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
28 # define NFA_REGEXP_RUN_LOG "nfa_regexp_run.log" |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
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 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
76 NFA_BACKREF1, /* \1 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
77 NFA_BACKREF2, /* \2 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
78 NFA_BACKREF3, /* \3 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
79 NFA_BACKREF4, /* \4 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
80 NFA_BACKREF5, /* \5 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
81 NFA_BACKREF6, /* \6 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
82 NFA_BACKREF7, /* \7 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
83 NFA_BACKREF8, /* \8 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
84 NFA_BACKREF9, /* \9 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
85 NFA_SKIP, /* Skip characters */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
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 */ | |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
120 |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
121 NFA_CURSOR, /* Match cursor pos */ |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
122 NFA_LNUM, /* Match line number */ |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
123 NFA_LNUM_GT, /* Match > line number */ |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
124 NFA_LNUM_LT, /* Match < line number */ |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
125 NFA_COL, /* Match cursor column */ |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
126 NFA_COL_GT, /* Match > cursor column */ |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
127 NFA_COL_LT, /* Match < cursor column */ |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
128 NFA_VCOL, /* Match cursor virtual column */ |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
129 NFA_VCOL_GT, /* Match > cursor virtual column */ |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
130 NFA_VCOL_LT, /* Match < cursor virtual column */ |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
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. */ | |
|
4569
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
185 static int nfa_has_zend; |
| 4444 | 186 |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
187 /* NFA regexp \1 .. \9 encountered. */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
188 static int nfa_has_backref; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
189 |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
190 /* Number of sub expressions actually being used during execution. 1 if only |
|
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
191 * the whole match (subexpr 0) is used. */ |
|
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
192 static int nfa_nsubexpr; |
|
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
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 | |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
198 static int nstate; /* Number of states in the NFA. Also used when |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
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)); | |
|
4533
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
214 static void nfa_print_state __ARGS((FILE *debugf, nfa_state_T *state)); |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
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)); | |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
223 static void nfa_set_neg_listids __ARGS((nfa_state_T *start)); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
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)); | |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
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 { \ | |
| 236 if (post_ptr >= post_end) \ | |
| 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; |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
251 int nstate_max; |
| 4444 | 252 |
| 253 nstate = 0; | |
| 254 istate = 0; | |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
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. |
| 259 * TODO: some patterns may still fail. */ | |
| 4458 | 260 nstate_max += 1000; |
| 4454 | 261 |
| 262 /* Size for postfix representation of expr. */ | |
| 4444 | 263 postfix_size = sizeof(*post_start) * 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; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
272 nfa_has_backref = FALSE; |
| 4444 | 273 |
| 274 regcomp_start(expr, re_flags); | |
| 275 | |
| 276 return OK; | |
| 277 } | |
| 278 | |
| 279 /* | |
| 280 * Search between "start" and "end" and try to recognize a | |
| 281 * character class in expanded form. For example [0-9]. | |
| 282 * On success, return the id the character class to be emitted. | |
| 283 * On failure, return 0 (=FAIL) | |
| 284 * Start points to the first char of the range, while end should point | |
| 285 * to the closing brace. | |
| 286 */ | |
| 287 static int | |
| 288 nfa_recognize_char_class(start, end, extra_newl) | |
| 289 char_u *start; | |
| 290 char_u *end; | |
| 291 int extra_newl; | |
| 292 { | |
| 293 int i; | |
| 294 /* Each of these variables takes up a char in "config[]", | |
| 295 * in the order they are here. */ | |
| 296 int not = FALSE, af = FALSE, AF = FALSE, az = FALSE, AZ = FALSE, | |
| 297 o7 = FALSE, o9 = FALSE, underscore = FALSE, newl = FALSE; | |
| 298 char_u *p; | |
| 299 #define NCONFIGS 16 | |
| 300 int classid[NCONFIGS] = { | |
| 301 NFA_DIGIT, NFA_NDIGIT, NFA_HEX, NFA_NHEX, | |
| 302 NFA_OCTAL, NFA_NOCTAL, NFA_WORD, NFA_NWORD, | |
| 303 NFA_HEAD, NFA_NHEAD, NFA_ALPHA, NFA_NALPHA, | |
| 304 NFA_LOWER, NFA_NLOWER, NFA_UPPER, NFA_NUPPER | |
| 305 }; | |
| 4450 | 306 char_u myconfig[10]; |
| 4444 | 307 char_u config[NCONFIGS][9] = { |
| 308 "000000100", /* digit */ | |
| 309 "100000100", /* non digit */ | |
| 310 "011000100", /* hex-digit */ | |
| 311 "111000100", /* non hex-digit */ | |
| 312 "000001000", /* octal-digit */ | |
| 313 "100001000", /* [^0-7] */ | |
| 314 "000110110", /* [0-9A-Za-z_] */ | |
| 315 "100110110", /* [^0-9A-Za-z_] */ | |
| 316 "000110010", /* head of word */ | |
| 317 "100110010", /* not head of word */ | |
| 318 "000110000", /* alphabetic char a-z */ | |
| 319 "100110000", /* non alphabetic char */ | |
| 320 "000100000", /* lowercase letter */ | |
| 321 "100100000", /* non lowercase */ | |
| 322 "000010000", /* uppercase */ | |
| 323 "100010000" /* non uppercase */ | |
| 324 }; | |
| 325 | |
| 326 if (extra_newl == TRUE) | |
| 327 newl = TRUE; | |
| 328 | |
| 329 if (*end != ']') | |
| 330 return FAIL; | |
| 331 p = start; | |
| 332 if (*p == '^') | |
| 333 { | |
| 334 not = TRUE; | |
| 335 p ++; | |
| 336 } | |
| 337 | |
| 338 while (p < end) | |
| 339 { | |
| 340 if (p + 2 < end && *(p + 1) == '-') | |
| 341 { | |
| 342 switch (*p) | |
| 343 { | |
| 344 case '0': | |
| 345 if (*(p + 2) == '9') | |
| 346 { | |
| 347 o9 = TRUE; | |
| 348 break; | |
| 349 } | |
| 350 else | |
| 351 if (*(p + 2) == '7') | |
| 352 { | |
| 353 o7 = TRUE; | |
| 354 break; | |
| 355 } | |
| 356 case 'a': | |
| 357 if (*(p + 2) == 'z') | |
| 358 { | |
| 359 az = TRUE; | |
| 360 break; | |
| 361 } | |
| 362 else | |
| 363 if (*(p + 2) == 'f') | |
| 364 { | |
| 365 af = TRUE; | |
| 366 break; | |
| 367 } | |
| 368 case 'A': | |
| 369 if (*(p + 2) == 'Z') | |
| 370 { | |
| 371 AZ = TRUE; | |
| 372 break; | |
| 373 } | |
| 374 else | |
| 375 if (*(p + 2) == 'F') | |
| 376 { | |
| 377 AF = TRUE; | |
| 378 break; | |
| 379 } | |
| 380 /* FALLTHROUGH */ | |
| 381 default: | |
| 382 return FAIL; | |
| 383 } | |
| 384 p += 3; | |
| 385 } | |
| 386 else if (p + 1 < end && *p == '\\' && *(p + 1) == 'n') | |
| 387 { | |
| 388 newl = TRUE; | |
| 389 p += 2; | |
| 390 } | |
| 391 else if (*p == '_') | |
| 392 { | |
| 393 underscore = TRUE; | |
| 394 p ++; | |
| 395 } | |
| 396 else if (*p == '\n') | |
| 397 { | |
| 398 newl = TRUE; | |
| 399 p ++; | |
| 400 } | |
| 401 else | |
| 402 return FAIL; | |
| 403 } /* while (p < end) */ | |
| 404 | |
| 405 if (p != end) | |
| 406 return FAIL; | |
| 407 | |
| 408 /* build the config that represents the ranges we gathered */ | |
| 409 STRCPY(myconfig, "000000000"); | |
| 410 if (not == TRUE) | |
| 411 myconfig[0] = '1'; | |
| 412 if (af == TRUE) | |
| 413 myconfig[1] = '1'; | |
| 414 if (AF == TRUE) | |
| 415 myconfig[2] = '1'; | |
| 416 if (az == TRUE) | |
| 417 myconfig[3] = '1'; | |
| 418 if (AZ == TRUE) | |
| 419 myconfig[4] = '1'; | |
| 420 if (o7 == TRUE) | |
| 421 myconfig[5] = '1'; | |
| 422 if (o9 == TRUE) | |
| 423 myconfig[6] = '1'; | |
| 424 if (underscore == TRUE) | |
| 425 myconfig[7] = '1'; | |
| 426 if (newl == TRUE) | |
| 427 { | |
| 428 myconfig[8] = '1'; | |
| 429 extra_newl = ADD_NL; | |
| 430 } | |
| 431 /* try to recognize character classes */ | |
| 432 for (i = 0; i < NCONFIGS; i++) | |
| 4450 | 433 if (STRNCMP(myconfig, config[i], 8) == 0) |
| 4444 | 434 return classid[i] + extra_newl; |
| 435 | |
| 436 /* fallthrough => no success so far */ | |
| 437 return FAIL; | |
| 438 | |
| 439 #undef NCONFIGS | |
| 440 } | |
| 441 | |
| 442 /* | |
| 443 * Produce the bytes for equivalence class "c". | |
| 444 * Currently only handles latin1, latin9 and utf-8. | |
| 445 * Emits bytes in postfix notation: 'a,b,NFA_OR,c,NFA_OR' is | |
| 446 * equivalent to 'a OR b OR c' | |
| 447 * | |
| 448 * NOTE! When changing this function, also update reg_equi_class() | |
| 449 */ | |
| 450 static int | |
| 451 nfa_emit_equi_class(c, neg) | |
| 452 int c; | |
| 453 int neg; | |
| 454 { | |
| 455 int first = TRUE; | |
| 456 int glue = neg == TRUE ? NFA_CONCAT : NFA_OR; | |
| 457 #define EMIT2(c) \ | |
| 458 EMIT(c); \ | |
| 459 if (neg == TRUE) { \ | |
| 460 EMIT(NFA_NOT); \ | |
| 461 } \ | |
| 462 if (first == FALSE) \ | |
| 463 EMIT(glue); \ | |
| 464 else \ | |
| 465 first = FALSE; \ | |
| 466 | |
| 467 #ifdef FEAT_MBYTE | |
| 468 if (enc_utf8 || STRCMP(p_enc, "latin1") == 0 | |
| 469 || STRCMP(p_enc, "iso-8859-15") == 0) | |
| 470 #endif | |
| 471 { | |
| 472 switch (c) | |
| 473 { | |
| 474 case 'A': case '\300': case '\301': case '\302': | |
| 475 case '\303': case '\304': case '\305': | |
| 476 EMIT2('A'); EMIT2('\300'); EMIT2('\301'); | |
| 477 EMIT2('\302'); EMIT2('\303'); EMIT2('\304'); | |
| 478 EMIT2('\305'); | |
| 479 return OK; | |
| 480 | |
| 481 case 'C': case '\307': | |
| 482 EMIT2('C'); EMIT2('\307'); | |
| 483 return OK; | |
| 484 | |
| 485 case 'E': case '\310': case '\311': case '\312': case '\313': | |
| 486 EMIT2('E'); EMIT2('\310'); EMIT2('\311'); | |
| 487 EMIT2('\312'); EMIT2('\313'); | |
| 488 return OK; | |
| 489 | |
| 490 case 'I': case '\314': case '\315': case '\316': case '\317': | |
| 491 EMIT2('I'); EMIT2('\314'); EMIT2('\315'); | |
| 492 EMIT2('\316'); EMIT2('\317'); | |
| 493 return OK; | |
| 494 | |
| 495 case 'N': case '\321': | |
| 496 EMIT2('N'); EMIT2('\321'); | |
| 497 return OK; | |
| 498 | |
| 499 case 'O': case '\322': case '\323': case '\324': case '\325': | |
| 500 case '\326': | |
| 501 EMIT2('O'); EMIT2('\322'); EMIT2('\323'); | |
| 502 EMIT2('\324'); EMIT2('\325'); EMIT2('\326'); | |
| 503 return OK; | |
| 504 | |
| 505 case 'U': case '\331': case '\332': case '\333': case '\334': | |
| 506 EMIT2('U'); EMIT2('\331'); EMIT2('\332'); | |
| 507 EMIT2('\333'); EMIT2('\334'); | |
| 508 return OK; | |
| 509 | |
| 510 case 'Y': case '\335': | |
| 511 EMIT2('Y'); EMIT2('\335'); | |
| 512 return OK; | |
| 513 | |
| 514 case 'a': case '\340': case '\341': case '\342': | |
| 515 case '\343': case '\344': case '\345': | |
| 516 EMIT2('a'); EMIT2('\340'); EMIT2('\341'); | |
| 517 EMIT2('\342'); EMIT2('\343'); EMIT2('\344'); | |
| 518 EMIT2('\345'); | |
| 519 return OK; | |
| 520 | |
| 521 case 'c': case '\347': | |
| 522 EMIT2('c'); EMIT2('\347'); | |
| 523 return OK; | |
| 524 | |
| 525 case 'e': case '\350': case '\351': case '\352': case '\353': | |
| 526 EMIT2('e'); EMIT2('\350'); EMIT2('\351'); | |
| 527 EMIT2('\352'); EMIT2('\353'); | |
| 528 return OK; | |
| 529 | |
| 530 case 'i': case '\354': case '\355': case '\356': case '\357': | |
| 531 EMIT2('i'); EMIT2('\354'); EMIT2('\355'); | |
| 532 EMIT2('\356'); EMIT2('\357'); | |
| 533 return OK; | |
| 534 | |
| 535 case 'n': case '\361': | |
| 536 EMIT2('n'); EMIT2('\361'); | |
| 537 return OK; | |
| 538 | |
| 539 case 'o': case '\362': case '\363': case '\364': case '\365': | |
| 540 case '\366': | |
| 541 EMIT2('o'); EMIT2('\362'); EMIT2('\363'); | |
| 542 EMIT2('\364'); EMIT2('\365'); EMIT2('\366'); | |
| 543 return OK; | |
| 544 | |
| 545 case 'u': case '\371': case '\372': case '\373': case '\374': | |
| 546 EMIT2('u'); EMIT2('\371'); EMIT2('\372'); | |
| 547 EMIT2('\373'); EMIT2('\374'); | |
| 548 return OK; | |
| 549 | |
| 550 case 'y': case '\375': case '\377': | |
| 551 EMIT2('y'); EMIT2('\375'); EMIT2('\377'); | |
| 552 return OK; | |
| 553 | |
| 554 default: | |
| 555 return FAIL; | |
| 556 } | |
| 557 } | |
| 558 | |
| 559 EMIT(c); | |
| 560 return OK; | |
| 561 #undef EMIT2 | |
| 562 } | |
| 563 | |
| 564 /* | |
| 565 * Code to parse regular expression. | |
| 566 * | |
| 567 * We try to reuse parsing functions in regexp.c to | |
| 568 * minimize surprise and keep the syntax consistent. | |
| 569 */ | |
| 570 | |
| 571 /* | |
| 572 * Parse the lowest level. | |
| 573 * | |
| 574 * An atom can be one of a long list of items. Many atoms match one character | |
| 575 * in the text. It is often an ordinary character or a character class. | |
| 576 * Braces can be used to make a pattern into an atom. The "\z(\)" construct | |
| 577 * is only for syntax highlighting. | |
| 578 * | |
| 579 * atom ::= ordinary-atom | |
| 580 * or \( pattern \) | |
| 581 * or \%( pattern \) | |
| 582 * or \z( pattern \) | |
| 583 */ | |
| 584 static int | |
| 585 nfa_regatom() | |
| 586 { | |
| 587 int c; | |
| 588 int charclass; | |
| 589 int equiclass; | |
| 590 int collclass; | |
| 591 int got_coll_char; | |
| 592 char_u *p; | |
| 593 char_u *endp; | |
| 594 #ifdef FEAT_MBYTE | |
| 595 char_u *old_regparse = regparse; | |
| 596 #endif | |
| 597 int extra = 0; | |
| 598 int first; | |
| 599 int emit_range; | |
| 600 int negated; | |
| 601 int result; | |
| 602 int startc = -1; | |
| 603 int endc = -1; | |
| 604 int oldstartc = -1; | |
| 605 int cpo_lit; /* 'cpoptions' contains 'l' flag */ | |
| 606 int cpo_bsl; /* 'cpoptions' contains '\' flag */ | |
| 607 int glue; /* ID that will "glue" nodes together */ | |
| 608 | |
| 609 cpo_lit = vim_strchr(p_cpo, CPO_LITERAL) != NULL; | |
| 610 cpo_bsl = vim_strchr(p_cpo, CPO_BACKSL) != NULL; | |
| 611 | |
| 612 c = getchr(); | |
| 613 switch (c) | |
| 614 { | |
|
4543
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
615 case NUL: |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
616 syntax_error = TRUE; |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
617 EMSG_RET_FAIL(_("E865: (NFA) Regexp end encountered prematurely")); |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
618 |
| 4444 | 619 case Magic('^'): |
| 620 EMIT(NFA_BOL); | |
| 621 break; | |
| 622 | |
| 623 case Magic('$'): | |
| 624 EMIT(NFA_EOL); | |
| 625 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 626 had_eol = TRUE; | |
| 627 #endif | |
| 628 break; | |
| 629 | |
| 630 case Magic('<'): | |
| 631 EMIT(NFA_BOW); | |
| 632 break; | |
| 633 | |
| 634 case Magic('>'): | |
| 635 EMIT(NFA_EOW); | |
| 636 break; | |
| 637 | |
| 638 case Magic('_'): | |
| 639 c = no_Magic(getchr()); | |
| 640 if (c == '^') /* "\_^" is start-of-line */ | |
| 641 { | |
| 642 EMIT(NFA_BOL); | |
| 643 break; | |
| 644 } | |
| 645 if (c == '$') /* "\_$" is end-of-line */ | |
| 646 { | |
| 647 EMIT(NFA_EOL); | |
| 648 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 649 had_eol = TRUE; | |
| 650 #endif | |
| 651 break; | |
| 652 } | |
| 653 | |
| 654 extra = ADD_NL; | |
| 655 | |
| 656 /* "\_[" is collection plus newline */ | |
| 657 if (c == '[') | |
|
4517
9a2183bd8295
updated for version 7.3.1006
Bram Moolenaar <bram@vim.org>
parents:
4515
diff
changeset
|
658 goto collection; |
| 4444 | 659 |
| 660 /* "\_x" is character class plus newline */ | |
| 661 /*FALLTHROUGH*/ | |
| 662 | |
| 663 /* | |
| 664 * Character classes. | |
| 665 */ | |
| 666 case Magic('.'): | |
| 667 case Magic('i'): | |
| 668 case Magic('I'): | |
| 669 case Magic('k'): | |
| 670 case Magic('K'): | |
| 671 case Magic('f'): | |
| 672 case Magic('F'): | |
| 673 case Magic('p'): | |
| 674 case Magic('P'): | |
| 675 case Magic('s'): | |
| 676 case Magic('S'): | |
| 677 case Magic('d'): | |
| 678 case Magic('D'): | |
| 679 case Magic('x'): | |
| 680 case Magic('X'): | |
| 681 case Magic('o'): | |
| 682 case Magic('O'): | |
| 683 case Magic('w'): | |
| 684 case Magic('W'): | |
| 685 case Magic('h'): | |
| 686 case Magic('H'): | |
| 687 case Magic('a'): | |
| 688 case Magic('A'): | |
| 689 case Magic('l'): | |
| 690 case Magic('L'): | |
| 691 case Magic('u'): | |
| 692 case Magic('U'): | |
| 693 p = vim_strchr(classchars, no_Magic(c)); | |
| 694 if (p == NULL) | |
| 695 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
696 EMSGN("INTERNAL: Unknown character class char: %ld", c); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
697 return FAIL; |
| 4444 | 698 } |
| 699 #ifdef FEAT_MBYTE | |
| 700 /* When '.' is followed by a composing char ignore the dot, so that | |
| 701 * the composing char is matched here. */ | |
| 702 if (enc_utf8 && c == Magic('.') && utf_iscomposing(peekchr())) | |
| 703 { | |
|
4535
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
704 old_regparse = regparse; |
| 4444 | 705 c = getchr(); |
| 706 goto nfa_do_multibyte; | |
| 707 } | |
| 708 #endif | |
| 709 EMIT(nfa_classcodes[p - classchars]); | |
| 710 if (extra == ADD_NL) | |
| 711 { | |
| 712 EMIT(NFA_NEWL); | |
| 713 EMIT(NFA_OR); | |
| 714 regflags |= RF_HASNL; | |
| 715 } | |
| 716 break; | |
| 717 | |
| 718 case Magic('n'): | |
| 719 if (reg_string) | |
| 720 /* In a string "\n" matches a newline character. */ | |
| 721 EMIT(NL); | |
| 722 else | |
| 723 { | |
| 724 /* In buffer text "\n" matches the end of a line. */ | |
| 725 EMIT(NFA_NEWL); | |
| 726 regflags |= RF_HASNL; | |
| 727 } | |
| 728 break; | |
| 729 | |
| 730 case Magic('('): | |
| 731 if (nfa_reg(REG_PAREN) == FAIL) | |
| 732 return FAIL; /* cascaded error */ | |
| 733 break; | |
| 734 | |
| 735 case Magic('|'): | |
| 736 case Magic('&'): | |
| 737 case Magic(')'): | |
| 738 syntax_error = TRUE; | |
| 4450 | 739 EMSGN(_(e_misplaced), no_Magic(c)); |
| 4444 | 740 return FAIL; |
| 741 | |
| 742 case Magic('='): | |
| 743 case Magic('?'): | |
| 744 case Magic('+'): | |
| 745 case Magic('@'): | |
| 746 case Magic('*'): | |
| 747 case Magic('{'): | |
| 748 /* these should follow an atom, not form an atom */ | |
| 749 syntax_error = TRUE; | |
| 4450 | 750 EMSGN(_(e_misplaced), no_Magic(c)); |
| 4444 | 751 return FAIL; |
| 752 | |
| 753 case Magic('~'): /* previous substitute pattern */ | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
754 /* TODO: Not supported yet */ |
| 4444 | 755 return FAIL; |
| 756 | |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
757 case Magic('1'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
758 case Magic('2'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
759 case Magic('3'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
760 case Magic('4'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
761 case Magic('5'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
762 case Magic('6'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
763 case Magic('7'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
764 case Magic('8'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
765 case Magic('9'): |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
766 EMIT(NFA_BACKREF1 + (no_Magic(c) - '1')); |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
767 nfa_has_backref = TRUE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
768 break; |
| 4444 | 769 |
| 770 case Magic('z'): | |
| 771 c = no_Magic(getchr()); | |
| 772 switch (c) | |
| 773 { | |
| 774 case 's': | |
| 775 EMIT(NFA_ZSTART); | |
| 776 break; | |
| 777 case 'e': | |
| 778 EMIT(NFA_ZEND); | |
| 779 nfa_has_zend = TRUE; | |
|
4569
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
780 break; |
| 4444 | 781 case '1': |
| 782 case '2': | |
| 783 case '3': | |
| 784 case '4': | |
| 785 case '5': | |
| 786 case '6': | |
| 787 case '7': | |
| 788 case '8': | |
| 789 case '9': | |
| 790 case '(': | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
791 /* TODO: \z1...\z9 and \z( not yet supported */ |
| 4444 | 792 return FAIL; |
| 793 default: | |
| 794 syntax_error = TRUE; | |
| 4450 | 795 EMSGN(_("E867: (NFA) Unknown operator '\\z%c'"), |
| 4444 | 796 no_Magic(c)); |
| 797 return FAIL; | |
| 798 } | |
| 799 break; | |
| 800 | |
| 801 case Magic('%'): | |
| 802 c = no_Magic(getchr()); | |
| 803 switch (c) | |
| 804 { | |
| 805 /* () without a back reference */ | |
| 806 case '(': | |
| 807 if (nfa_reg(REG_NPAREN) == FAIL) | |
| 808 return FAIL; | |
| 809 EMIT(NFA_NOPEN); | |
| 810 break; | |
| 811 | |
| 812 case 'd': /* %d123 decimal */ | |
| 813 case 'o': /* %o123 octal */ | |
| 814 case 'x': /* %xab hex 2 */ | |
| 815 case 'u': /* %uabcd hex 4 */ | |
| 816 case 'U': /* %U1234abcd hex 8 */ | |
|
4543
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
817 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
818 int nr; |
|
4543
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
819 |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
820 switch (c) |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
821 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
822 case 'd': nr = getdecchrs(); break; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
823 case 'o': nr = getoctchrs(); break; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
824 case 'x': nr = gethexchrs(2); break; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
825 case 'u': nr = gethexchrs(4); break; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
826 case 'U': nr = gethexchrs(8); break; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
827 default: nr = -1; break; |
|
4543
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
828 } |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
829 |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
830 if (nr < 0) |
|
4543
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
831 EMSG2_RET_FAIL( |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
832 _("E678: Invalid character after %s%%[dxouU]"), |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
833 reg_magic == MAGIC_ALL); |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
834 /* TODO: what if a composing character follows? */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
835 EMIT(nr); |
|
4543
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
836 } |
| 4444 | 837 break; |
| 838 | |
| 839 /* Catch \%^ and \%$ regardless of where they appear in the | |
| 840 * pattern -- regardless of whether or not it makes sense. */ | |
| 841 case '^': | |
| 842 EMIT(NFA_BOF); | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
843 /* TODO: Not yet supported */ |
| 4444 | 844 return FAIL; |
| 845 break; | |
| 846 | |
| 847 case '$': | |
| 848 EMIT(NFA_EOF); | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
849 /* TODO: Not yet supported */ |
| 4444 | 850 return FAIL; |
| 851 break; | |
| 852 | |
| 853 case '#': | |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
854 EMIT(NFA_CURSOR); |
| 4444 | 855 break; |
| 856 | |
| 857 case 'V': | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
858 /* TODO: not supported yet */ |
| 4444 | 859 return FAIL; |
| 860 break; | |
| 861 | |
| 862 case '[': | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
863 /* TODO: \%[abc] not supported yet */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
864 return FAIL; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
865 |
| 4444 | 866 default: |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
867 { |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
868 long_u n = 0; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
869 int cmp = c; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
870 |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
871 if (c == '<' || c == '>') |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
872 c = getchr(); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
873 while (VIM_ISDIGIT(c)) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
874 { |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
875 n = n * 10 + (c - '0'); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
876 c = getchr(); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
877 } |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
878 if (c == 'l' || c == 'c' || c == 'v') |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
879 { |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
880 EMIT(n); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
881 if (c == 'l') |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
882 EMIT(cmp == '<' ? NFA_LNUM_LT : |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
883 cmp == '>' ? NFA_LNUM_GT : NFA_LNUM); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
884 else if (c == 'c') |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
885 EMIT(cmp == '<' ? NFA_COL_LT : |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
886 cmp == '>' ? NFA_COL_GT : NFA_COL); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
887 else |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
888 EMIT(cmp == '<' ? NFA_VCOL_LT : |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
889 cmp == '>' ? NFA_VCOL_GT : NFA_VCOL); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
890 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
891 } |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
892 else if (c == '\'') |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
893 /* TODO: \%'m not supported yet */ |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
894 return FAIL; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
895 } |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
896 syntax_error = TRUE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
897 EMSGN(_("E867: (NFA) Unknown operator '\\%%%c'"), |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
898 no_Magic(c)); |
| 4444 | 899 return FAIL; |
| 900 } | |
| 901 break; | |
| 902 | |
| 903 case Magic('['): | |
|
4517
9a2183bd8295
updated for version 7.3.1006
Bram Moolenaar <bram@vim.org>
parents:
4515
diff
changeset
|
904 collection: |
| 4444 | 905 /* |
| 906 * Glue is emitted between several atoms from the []. | |
| 907 * It is either NFA_OR, or NFA_CONCAT. | |
| 908 * | |
| 909 * [abc] expands to 'a b NFA_OR c NFA_OR' (in postfix notation) | |
| 910 * [^abc] expands to 'a NFA_NOT b NFA_NOT NFA_CONCAT c NFA_NOT | |
| 911 * NFA_CONCAT NFA_END_NEG_RANGE NFA_CONCAT' (in postfix | |
| 912 * notation) | |
| 913 * | |
| 914 */ | |
| 915 | |
| 916 | |
| 917 /* Emit negation atoms, if needed. | |
| 918 * The CONCAT below merges the NOT with the previous node. */ | |
| 919 #define TRY_NEG() \ | |
| 920 if (negated == TRUE) \ | |
| 921 { \ | |
| 922 EMIT(NFA_NOT); \ | |
| 923 } | |
| 924 | |
| 925 /* Emit glue between important nodes : CONCAT or OR. */ | |
| 926 #define EMIT_GLUE() \ | |
| 927 if (first == FALSE) \ | |
| 928 EMIT(glue); \ | |
| 929 else \ | |
| 930 first = FALSE; | |
| 931 | |
| 932 p = regparse; | |
| 933 endp = skip_anyof(p); | |
| 934 if (*endp == ']') | |
| 935 { | |
| 936 /* | |
| 937 * Try to reverse engineer character classes. For example, | |
| 938 * recognize that [0-9] stands for \d and [A-Za-z_] with \h, | |
| 939 * and perform the necessary substitutions in the NFA. | |
| 940 */ | |
| 941 result = nfa_recognize_char_class(regparse, endp, | |
| 942 extra == ADD_NL); | |
| 943 if (result != FAIL) | |
| 944 { | |
| 945 if (result >= NFA_DIGIT && result <= NFA_NUPPER) | |
| 946 EMIT(result); | |
| 947 else /* must be char class + newline */ | |
| 948 { | |
| 949 EMIT(result - ADD_NL); | |
| 950 EMIT(NFA_NEWL); | |
| 951 EMIT(NFA_OR); | |
| 952 } | |
| 953 regparse = endp; | |
|
4573
37e444aeb33b
updated for version 7.3.1034
Bram Moolenaar <bram@vim.org>
parents:
4571
diff
changeset
|
954 mb_ptr_adv(regparse); |
| 4444 | 955 return OK; |
| 956 } | |
| 957 /* | |
| 958 * Failed to recognize a character class. Use the simple | |
| 959 * version that turns [abc] into 'a' OR 'b' OR 'c' | |
| 960 */ | |
| 961 startc = endc = oldstartc = -1; | |
| 962 first = TRUE; /* Emitting first atom in this sequence? */ | |
| 963 negated = FALSE; | |
| 964 glue = NFA_OR; | |
| 965 if (*regparse == '^') /* negated range */ | |
| 966 { | |
| 967 negated = TRUE; | |
| 968 glue = NFA_CONCAT; | |
|
4573
37e444aeb33b
updated for version 7.3.1034
Bram Moolenaar <bram@vim.org>
parents:
4571
diff
changeset
|
969 mb_ptr_adv(regparse); |
| 4444 | 970 } |
| 971 if (*regparse == '-') | |
| 972 { | |
| 973 startc = '-'; | |
| 974 EMIT(startc); | |
| 975 TRY_NEG(); | |
| 976 EMIT_GLUE(); | |
|
4573
37e444aeb33b
updated for version 7.3.1034
Bram Moolenaar <bram@vim.org>
parents:
4571
diff
changeset
|
977 mb_ptr_adv(regparse); |
| 4444 | 978 } |
| 979 /* Emit the OR branches for each character in the [] */ | |
| 980 emit_range = FALSE; | |
| 981 while (regparse < endp) | |
| 982 { | |
| 983 oldstartc = startc; | |
| 984 startc = -1; | |
| 985 got_coll_char = FALSE; | |
| 986 if (*regparse == '[') | |
| 987 { | |
| 988 /* Check for [: :], [= =], [. .] */ | |
| 989 equiclass = collclass = 0; | |
| 990 charclass = get_char_class(®parse); | |
| 991 if (charclass == CLASS_NONE) | |
| 992 { | |
| 993 equiclass = get_equi_class(®parse); | |
| 994 if (equiclass == 0) | |
| 995 collclass = get_coll_element(®parse); | |
| 996 } | |
| 997 | |
| 998 /* Character class like [:alpha:] */ | |
| 999 if (charclass != CLASS_NONE) | |
| 1000 { | |
| 1001 switch (charclass) | |
| 1002 { | |
| 1003 case CLASS_ALNUM: | |
| 1004 EMIT(NFA_CLASS_ALNUM); | |
| 1005 break; | |
| 1006 case CLASS_ALPHA: | |
| 1007 EMIT(NFA_CLASS_ALPHA); | |
| 1008 break; | |
| 1009 case CLASS_BLANK: | |
| 1010 EMIT(NFA_CLASS_BLANK); | |
| 1011 break; | |
| 1012 case CLASS_CNTRL: | |
| 1013 EMIT(NFA_CLASS_CNTRL); | |
| 1014 break; | |
| 1015 case CLASS_DIGIT: | |
| 1016 EMIT(NFA_CLASS_DIGIT); | |
| 1017 break; | |
| 1018 case CLASS_GRAPH: | |
| 1019 EMIT(NFA_CLASS_GRAPH); | |
| 1020 break; | |
| 1021 case CLASS_LOWER: | |
| 1022 EMIT(NFA_CLASS_LOWER); | |
| 1023 break; | |
| 1024 case CLASS_PRINT: | |
| 1025 EMIT(NFA_CLASS_PRINT); | |
| 1026 break; | |
| 1027 case CLASS_PUNCT: | |
| 1028 EMIT(NFA_CLASS_PUNCT); | |
| 1029 break; | |
| 1030 case CLASS_SPACE: | |
| 1031 EMIT(NFA_CLASS_SPACE); | |
| 1032 break; | |
| 1033 case CLASS_UPPER: | |
| 1034 EMIT(NFA_CLASS_UPPER); | |
| 1035 break; | |
| 1036 case CLASS_XDIGIT: | |
| 1037 EMIT(NFA_CLASS_XDIGIT); | |
| 1038 break; | |
| 1039 case CLASS_TAB: | |
| 1040 EMIT(NFA_CLASS_TAB); | |
| 1041 break; | |
| 1042 case CLASS_RETURN: | |
| 1043 EMIT(NFA_CLASS_RETURN); | |
| 1044 break; | |
| 1045 case CLASS_BACKSPACE: | |
| 1046 EMIT(NFA_CLASS_BACKSPACE); | |
| 1047 break; | |
| 1048 case CLASS_ESCAPE: | |
| 1049 EMIT(NFA_CLASS_ESCAPE); | |
| 1050 break; | |
| 1051 } | |
| 1052 TRY_NEG(); | |
| 1053 EMIT_GLUE(); | |
| 1054 continue; | |
| 1055 } | |
| 1056 /* Try equivalence class [=a=] and the like */ | |
| 1057 if (equiclass != 0) | |
| 1058 { | |
| 1059 result = nfa_emit_equi_class(equiclass, negated); | |
| 1060 if (result == FAIL) | |
| 1061 { | |
| 1062 /* should never happen */ | |
| 1063 EMSG_RET_FAIL(_("E868: Error building NFA with equivalence class!")); | |
| 1064 } | |
| 1065 EMIT_GLUE(); | |
| 1066 continue; | |
| 1067 } | |
| 1068 /* Try collating class like [. .] */ | |
| 1069 if (collclass != 0) | |
| 1070 { | |
| 1071 startc = collclass; /* allow [.a.]-x as a range */ | |
| 1072 /* Will emit the proper atom at the end of the | |
| 1073 * while loop. */ | |
| 1074 } | |
| 1075 } | |
| 1076 /* Try a range like 'a-x' or '\t-z' */ | |
| 1077 if (*regparse == '-') | |
| 1078 { | |
| 1079 emit_range = TRUE; | |
| 1080 startc = oldstartc; | |
|
4573
37e444aeb33b
updated for version 7.3.1034
Bram Moolenaar <bram@vim.org>
parents:
4571
diff
changeset
|
1081 mb_ptr_adv(regparse); |
| 4444 | 1082 continue; /* reading the end of the range */ |
| 1083 } | |
| 1084 | |
| 1085 /* Now handle simple and escaped characters. | |
| 1086 * Only "\]", "\^", "\]" and "\\" are special in Vi. Vim | |
| 1087 * accepts "\t", "\e", etc., but only when the 'l' flag in | |
| 1088 * 'cpoptions' is not included. | |
| 1089 * Posix doesn't recognize backslash at all. | |
| 1090 */ | |
| 1091 if (*regparse == '\\' | |
| 1092 && !cpo_bsl | |
| 1093 && regparse + 1 <= endp | |
| 1094 && (vim_strchr(REGEXP_INRANGE, regparse[1]) != NULL | |
| 1095 || (!cpo_lit | |
| 1096 && vim_strchr(REGEXP_ABBR, regparse[1]) | |
| 1097 != NULL) | |
| 1098 ) | |
| 1099 ) | |
| 1100 { | |
|
4573
37e444aeb33b
updated for version 7.3.1034
Bram Moolenaar <bram@vim.org>
parents:
4571
diff
changeset
|
1101 mb_ptr_adv(regparse); |
| 4444 | 1102 |
|
4507
9dbbddb2ed10
updated for version 7.3.1001
Bram Moolenaar <bram@vim.org>
parents:
4503
diff
changeset
|
1103 if (*regparse == 'n') |
| 4444 | 1104 startc = reg_string ? NL : NFA_NEWL; |
| 1105 else | |
| 1106 if (*regparse == 'd' | |
| 1107 || *regparse == 'o' | |
| 1108 || *regparse == 'x' | |
| 1109 || *regparse == 'u' | |
| 1110 || *regparse == 'U' | |
| 1111 ) | |
| 1112 { | |
| 1113 /* TODO(RE) This needs more testing */ | |
| 1114 startc = coll_get_char(); | |
| 1115 got_coll_char = TRUE; | |
|
4573
37e444aeb33b
updated for version 7.3.1034
Bram Moolenaar <bram@vim.org>
parents:
4571
diff
changeset
|
1116 mb_ptr_back(old_regparse, regparse); |
| 4444 | 1117 } |
| 1118 else | |
| 1119 { | |
| 1120 /* \r,\t,\e,\b */ | |
| 1121 startc = backslash_trans(*regparse); | |
| 1122 } | |
| 1123 } | |
| 1124 | |
| 1125 /* Normal printable char */ | |
| 1126 if (startc == -1) | |
| 1127 #ifdef FEAT_MBYTE | |
| 1128 startc = (*mb_ptr2char)(regparse); | |
| 1129 #else | |
| 1130 startc = *regparse; | |
| 1131 #endif | |
| 1132 | |
| 1133 /* Previous char was '-', so this char is end of range. */ | |
| 1134 if (emit_range) | |
| 1135 { | |
| 1136 endc = startc; startc = oldstartc; | |
| 1137 if (startc > endc) | |
| 1138 EMSG_RET_FAIL(_(e_invrange)); | |
| 1139 #ifdef FEAT_MBYTE | |
| 1140 if (has_mbyte && ((*mb_char2len)(startc) > 1 | |
| 1141 || (*mb_char2len)(endc) > 1)) | |
| 1142 { | |
| 1143 if (endc > startc + 256) | |
| 1144 EMSG_RET_FAIL(_(e_invrange)); | |
| 1145 /* Emit the range. "startc" was already emitted, so | |
| 1146 * skip it. */ | |
| 1147 for (c = startc + 1; c <= endc; c++) | |
| 1148 { | |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1149 EMIT(c); |
| 4444 | 1150 TRY_NEG(); |
| 1151 EMIT_GLUE(); | |
| 1152 } | |
| 1153 emit_range = FALSE; | |
| 1154 } | |
| 1155 else | |
| 1156 #endif | |
| 1157 { | |
| 1158 #ifdef EBCDIC | |
| 1159 int alpha_only = FALSE; | |
| 1160 | |
| 1161 /* for alphabetical range skip the gaps | |
| 1162 * 'i'-'j', 'r'-'s', 'I'-'J' and 'R'-'S'. */ | |
| 1163 if (isalpha(startc) && isalpha(endc)) | |
| 1164 alpha_only = TRUE; | |
| 1165 #endif | |
| 1166 /* Emit the range. "startc" was already emitted, so | |
| 1167 * skip it. */ | |
| 1168 for (c = startc + 1; c <= endc; c++) | |
| 1169 #ifdef EBCDIC | |
| 1170 if (!alpha_only || isalpha(startc)) | |
| 1171 #endif | |
| 1172 { | |
| 1173 EMIT(c); | |
| 1174 TRY_NEG(); | |
| 1175 EMIT_GLUE(); | |
| 1176 } | |
| 1177 emit_range = FALSE; | |
| 1178 } | |
| 1179 } | |
| 1180 else | |
| 1181 { | |
| 1182 /* | |
| 1183 * This char (startc) is not part of a range. Just | |
| 1184 * emit it. | |
| 1185 * | |
| 1186 * Normally, simply emit startc. But if we get char | |
| 1187 * code=0 from a collating char, then replace it with | |
| 1188 * 0x0a. | |
| 1189 * | |
| 1190 * This is needed to completely mimic the behaviour of | |
| 1191 * the backtracking engine. | |
| 1192 */ | |
| 1193 if (got_coll_char == TRUE && startc == 0) | |
| 1194 EMIT(0x0a); | |
| 1195 else | |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1196 EMIT(startc); |
| 4444 | 1197 TRY_NEG(); |
| 1198 EMIT_GLUE(); | |
| 1199 } | |
| 1200 | |
|
4573
37e444aeb33b
updated for version 7.3.1034
Bram Moolenaar <bram@vim.org>
parents:
4571
diff
changeset
|
1201 mb_ptr_adv(regparse); |
| 4444 | 1202 } /* while (p < endp) */ |
| 1203 | |
|
4573
37e444aeb33b
updated for version 7.3.1034
Bram Moolenaar <bram@vim.org>
parents:
4571
diff
changeset
|
1204 mb_ptr_back(old_regparse, regparse); |
| 4444 | 1205 if (*regparse == '-') /* if last, '-' is just a char */ |
| 1206 { | |
| 1207 EMIT('-'); | |
| 1208 TRY_NEG(); | |
| 1209 EMIT_GLUE(); | |
| 1210 } | |
|
4573
37e444aeb33b
updated for version 7.3.1034
Bram Moolenaar <bram@vim.org>
parents:
4571
diff
changeset
|
1211 mb_ptr_adv(regparse); |
| 4444 | 1212 |
| 1213 /* skip the trailing ] */ | |
| 1214 regparse = endp; | |
|
4573
37e444aeb33b
updated for version 7.3.1034
Bram Moolenaar <bram@vim.org>
parents:
4571
diff
changeset
|
1215 mb_ptr_adv(regparse); |
| 4444 | 1216 if (negated == TRUE) |
| 1217 { | |
| 1218 /* Mark end of negated char range */ | |
| 1219 EMIT(NFA_END_NEG_RANGE); | |
| 1220 EMIT(NFA_CONCAT); | |
| 1221 } | |
|
4615
5679b8ddd8cc
updated for version 7.3.1055
Bram Moolenaar <bram@vim.org>
parents:
4583
diff
changeset
|
1222 |
|
5679b8ddd8cc
updated for version 7.3.1055
Bram Moolenaar <bram@vim.org>
parents:
4583
diff
changeset
|
1223 /* \_[] also matches \n but it's not negated */ |
|
5679b8ddd8cc
updated for version 7.3.1055
Bram Moolenaar <bram@vim.org>
parents:
4583
diff
changeset
|
1224 if (extra == ADD_NL) |
|
5679b8ddd8cc
updated for version 7.3.1055
Bram Moolenaar <bram@vim.org>
parents:
4583
diff
changeset
|
1225 { |
|
5679b8ddd8cc
updated for version 7.3.1055
Bram Moolenaar <bram@vim.org>
parents:
4583
diff
changeset
|
1226 EMIT(reg_string ? NL : NFA_NEWL); |
|
5679b8ddd8cc
updated for version 7.3.1055
Bram Moolenaar <bram@vim.org>
parents:
4583
diff
changeset
|
1227 EMIT(NFA_OR); |
|
5679b8ddd8cc
updated for version 7.3.1055
Bram Moolenaar <bram@vim.org>
parents:
4583
diff
changeset
|
1228 } |
|
5679b8ddd8cc
updated for version 7.3.1055
Bram Moolenaar <bram@vim.org>
parents:
4583
diff
changeset
|
1229 |
| 4444 | 1230 return OK; |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
1231 } /* if exists closing ] */ |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
1232 |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
1233 if (reg_strict) |
| 4444 | 1234 { |
| 1235 syntax_error = TRUE; | |
| 1236 EMSG_RET_FAIL(_(e_missingbracket)); | |
| 1237 } | |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
1238 /* FALLTHROUGH */ |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
1239 |
| 4444 | 1240 default: |
| 1241 { | |
| 1242 #ifdef FEAT_MBYTE | |
| 1243 int plen; | |
| 1244 | |
| 1245 nfa_do_multibyte: | |
|
4543
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
1246 /* plen is length of current char with composing chars */ |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
1247 if (enc_utf8 && ((*mb_char2len)(c) |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
1248 != (plen = (*mb_ptr2len)(old_regparse)) |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
1249 || utf_iscomposing(c))) |
| 4444 | 1250 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
1251 int i = 0; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
1252 |
|
4535
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
1253 /* A base character plus composing characters, or just one |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
1254 * or more composing characters. |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1255 * This requires creating a separate atom as if enclosing |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1256 * the characters in (), where NFA_COMPOSING is the ( and |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1257 * NFA_END_COMPOSING is the ). Note that right now we are |
| 4444 | 1258 * building the postfix form, not the NFA itself; |
| 1259 * a composing char could be: a, b, c, NFA_COMPOSING | |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1260 * where 'b' and 'c' are chars with codes > 256. */ |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1261 for (;;) |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1262 { |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1263 EMIT(c); |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1264 if (i > 0) |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1265 EMIT(NFA_CONCAT); |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
1266 if ((i += utf_char2len(c)) >= plen) |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1267 break; |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1268 c = utf_ptr2char(old_regparse + i); |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1269 } |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
1270 EMIT(NFA_COMPOSING); |
| 4444 | 1271 regparse = old_regparse + plen; |
| 1272 } | |
| 1273 else | |
| 1274 #endif | |
| 1275 { | |
| 1276 c = no_Magic(c); | |
| 1277 EMIT(c); | |
| 1278 } | |
| 1279 return OK; | |
| 1280 } | |
| 1281 } | |
| 1282 | |
| 1283 #undef TRY_NEG | |
| 1284 #undef EMIT_GLUE | |
| 1285 | |
| 1286 return OK; | |
| 1287 } | |
| 1288 | |
| 1289 /* | |
| 1290 * Parse something followed by possible [*+=]. | |
| 1291 * | |
| 1292 * A piece is an atom, possibly followed by a multi, an indication of how many | |
| 1293 * times the atom can be matched. Example: "a*" matches any sequence of "a" | |
| 1294 * characters: "", "a", "aa", etc. | |
| 1295 * | |
| 1296 * piece ::= atom | |
| 1297 * or atom multi | |
| 1298 */ | |
| 1299 static int | |
| 1300 nfa_regpiece() | |
| 1301 { | |
| 1302 int i; | |
| 1303 int op; | |
| 1304 int ret; | |
| 1305 long minval, maxval; | |
| 1306 int greedy = TRUE; /* Braces are prefixed with '-' ? */ | |
| 1307 char_u *old_regparse, *new_regparse; | |
| 1308 int c2; | |
| 1309 int *old_post_ptr, *my_post_start; | |
| 1310 int old_regnpar; | |
| 1311 int quest; | |
| 1312 | |
| 1313 /* Save the current position in the regexp, so that we can use it if | |
| 1314 * <atom>{m,n} is next. */ | |
| 1315 old_regparse = regparse; | |
| 1316 /* Save current number of open parenthesis, so we can use it if | |
| 1317 * <atom>{m,n} is next */ | |
| 1318 old_regnpar = regnpar; | |
| 1319 /* store current pos in the postfix form, for \{m,n} involving 0s */ | |
| 1320 my_post_start = post_ptr; | |
| 1321 | |
| 1322 ret = nfa_regatom(); | |
| 1323 if (ret == FAIL) | |
| 1324 return FAIL; /* cascaded error */ | |
| 1325 | |
| 1326 op = peekchr(); | |
| 1327 if (re_multi_type(op) == NOT_MULTI) | |
| 1328 return OK; | |
| 1329 | |
| 1330 skipchr(); | |
| 1331 switch (op) | |
| 1332 { | |
| 1333 case Magic('*'): | |
| 1334 EMIT(NFA_STAR); | |
| 1335 break; | |
| 1336 | |
| 1337 case Magic('+'): | |
| 1338 /* | |
| 1339 * Trick: Normally, (a*)\+ would match the whole input "aaa". The | |
| 1340 * first and only submatch would be "aaa". But the backtracking | |
| 1341 * engine interprets the plus as "try matching one more time", and | |
| 1342 * a* matches a second time at the end of the input, the empty | |
| 1343 * string. | |
| 1344 * The submatch will the empty string. | |
| 1345 * | |
| 1346 * In order to be consistent with the old engine, we disable | |
| 1347 * NFA_PLUS, and replace <atom>+ with <atom><atom>* | |
| 1348 */ | |
| 1349 /* EMIT(NFA_PLUS); */ | |
| 1350 regnpar = old_regnpar; | |
| 1351 regparse = old_regparse; | |
| 1352 curchr = -1; | |
| 1353 if (nfa_regatom() == FAIL) | |
| 1354 return FAIL; | |
| 1355 EMIT(NFA_STAR); | |
| 1356 EMIT(NFA_CONCAT); | |
| 1357 skipchr(); /* skip the \+ */ | |
| 1358 break; | |
| 1359 | |
| 1360 case Magic('@'): | |
| 1361 op = no_Magic(getchr()); | |
| 1362 switch(op) | |
| 1363 { | |
| 1364 case '=': | |
| 1365 EMIT(NFA_PREV_ATOM_NO_WIDTH); | |
| 1366 break; | |
|
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
1367 case '0': |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
1368 case '1': |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
1369 case '2': |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
1370 case '3': |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
1371 case '4': |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
1372 case '5': |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
1373 case '6': |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
1374 case '7': |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
1375 case '8': |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
1376 case '9': |
| 4444 | 1377 case '!': |
| 1378 case '<': | |
| 1379 case '>': | |
| 1380 /* Not supported yet */ | |
| 1381 return FAIL; | |
| 1382 default: | |
| 1383 syntax_error = TRUE; | |
| 4450 | 1384 EMSGN(_("E869: (NFA) Unknown operator '\\@%c'"), op); |
| 4444 | 1385 return FAIL; |
| 1386 } | |
| 1387 break; | |
| 1388 | |
| 1389 case Magic('?'): | |
| 1390 case Magic('='): | |
| 1391 EMIT(NFA_QUEST); | |
| 1392 break; | |
| 1393 | |
| 1394 case Magic('{'): | |
| 1395 /* a{2,5} will expand to 'aaa?a?a?' | |
| 1396 * a{-1,3} will expand to 'aa??a??', where ?? is the nongreedy | |
| 1397 * version of '?' | |
| 1398 * \v(ab){2,3} will expand to '(ab)(ab)(ab)?', where all the | |
| 1399 * parenthesis have the same id | |
| 1400 */ | |
| 1401 | |
| 1402 greedy = TRUE; | |
| 1403 c2 = peekchr(); | |
| 1404 if (c2 == '-' || c2 == Magic('-')) | |
| 1405 { | |
| 1406 skipchr(); | |
| 1407 greedy = FALSE; | |
| 1408 } | |
| 1409 if (!read_limits(&minval, &maxval)) | |
| 1410 { | |
| 1411 syntax_error = TRUE; | |
| 1412 EMSG_RET_FAIL(_("E870: (NFA regexp) Error reading repetition limits")); | |
| 1413 } | |
| 1414 /* <atom>{0,inf}, <atom>{0,} and <atom>{} are equivalent to | |
| 1415 * <atom>* */ | |
| 1416 if (minval == 0 && maxval == MAX_LIMIT && greedy) | |
| 1417 { | |
| 1418 EMIT(NFA_STAR); | |
| 1419 break; | |
| 1420 } | |
| 1421 | |
| 1422 if (maxval > NFA_BRACES_MAXLIMIT) | |
| 1423 { | |
| 1424 /* This would yield a huge automaton and use too much memory. | |
| 1425 * Revert to old engine */ | |
| 1426 return FAIL; | |
| 1427 } | |
| 1428 | |
| 1429 /* Special case: x{0} or x{-0} */ | |
| 1430 if (maxval == 0) | |
| 1431 { | |
| 1432 /* Ignore result of previous call to nfa_regatom() */ | |
| 1433 post_ptr = my_post_start; | |
| 1434 /* NFA_SKIP_CHAR has 0-length and works everywhere */ | |
| 1435 EMIT(NFA_SKIP_CHAR); | |
| 1436 return OK; | |
| 1437 } | |
| 1438 | |
| 1439 /* Ignore previous call to nfa_regatom() */ | |
| 1440 post_ptr = my_post_start; | |
| 1441 /* Save pos after the repeated atom and the \{} */ | |
| 1442 new_regparse = regparse; | |
| 1443 | |
| 1444 quest = (greedy == TRUE? NFA_QUEST : NFA_QUEST_NONGREEDY); | |
| 1445 for (i = 0; i < maxval; i++) | |
| 1446 { | |
| 1447 /* Goto beginning of the repeated atom */ | |
| 1448 regparse = old_regparse; | |
| 1449 curchr = -1; | |
| 1450 /* Restore count of parenthesis */ | |
| 1451 regnpar = old_regnpar; | |
| 1452 old_post_ptr = post_ptr; | |
| 1453 if (nfa_regatom() == FAIL) | |
| 1454 return FAIL; | |
| 1455 /* after "minval" times, atoms are optional */ | |
| 1456 if (i + 1 > minval) | |
| 1457 EMIT(quest); | |
| 1458 if (old_post_ptr != my_post_start) | |
| 1459 EMIT(NFA_CONCAT); | |
| 1460 } | |
| 1461 | |
| 1462 /* Go to just after the repeated atom and the \{} */ | |
| 1463 regparse = new_regparse; | |
| 1464 curchr = -1; | |
| 1465 | |
| 1466 break; | |
| 1467 | |
| 1468 | |
| 1469 default: | |
| 1470 break; | |
| 1471 } /* end switch */ | |
| 1472 | |
| 1473 if (re_multi_type(peekchr()) != NOT_MULTI) | |
| 1474 { | |
| 1475 /* Can't have a multi follow a multi. */ | |
| 1476 syntax_error = TRUE; | |
| 1477 EMSG_RET_FAIL(_("E871: (NFA regexp) Can't have a multi follow a multi !")); | |
| 1478 } | |
| 1479 | |
| 1480 return OK; | |
| 1481 } | |
| 1482 | |
| 1483 /* | |
| 1484 * Parse one or more pieces, concatenated. It matches a match for the | |
| 1485 * first piece, followed by a match for the second piece, etc. Example: | |
| 1486 * "f[0-9]b", first matches "f", then a digit and then "b". | |
| 1487 * | |
| 1488 * concat ::= piece | |
| 1489 * or piece piece | |
| 1490 * or piece piece piece | |
| 1491 * etc. | |
| 1492 */ | |
| 1493 static int | |
| 1494 nfa_regconcat() | |
| 1495 { | |
| 1496 int cont = TRUE; | |
| 1497 int first = TRUE; | |
| 1498 | |
| 1499 while (cont) | |
| 1500 { | |
| 1501 switch (peekchr()) | |
| 1502 { | |
| 1503 case NUL: | |
| 1504 case Magic('|'): | |
| 1505 case Magic('&'): | |
| 1506 case Magic(')'): | |
| 1507 cont = FALSE; | |
| 1508 break; | |
| 1509 | |
| 1510 case Magic('Z'): | |
| 1511 #ifdef FEAT_MBYTE | |
| 1512 regflags |= RF_ICOMBINE; | |
| 1513 #endif | |
| 1514 skipchr_keepstart(); | |
| 1515 break; | |
| 1516 case Magic('c'): | |
| 1517 regflags |= RF_ICASE; | |
| 1518 skipchr_keepstart(); | |
| 1519 break; | |
| 1520 case Magic('C'): | |
| 1521 regflags |= RF_NOICASE; | |
| 1522 skipchr_keepstart(); | |
| 1523 break; | |
| 1524 case Magic('v'): | |
| 1525 reg_magic = MAGIC_ALL; | |
| 1526 skipchr_keepstart(); | |
| 1527 curchr = -1; | |
| 1528 break; | |
| 1529 case Magic('m'): | |
| 1530 reg_magic = MAGIC_ON; | |
| 1531 skipchr_keepstart(); | |
| 1532 curchr = -1; | |
| 1533 break; | |
| 1534 case Magic('M'): | |
| 1535 reg_magic = MAGIC_OFF; | |
| 1536 skipchr_keepstart(); | |
| 1537 curchr = -1; | |
| 1538 break; | |
| 1539 case Magic('V'): | |
| 1540 reg_magic = MAGIC_NONE; | |
| 1541 skipchr_keepstart(); | |
| 1542 curchr = -1; | |
| 1543 break; | |
| 1544 | |
| 1545 default: | |
| 1546 if (nfa_regpiece() == FAIL) | |
| 1547 return FAIL; | |
| 1548 if (first == FALSE) | |
| 1549 EMIT(NFA_CONCAT); | |
| 1550 else | |
| 1551 first = FALSE; | |
| 1552 break; | |
| 1553 } | |
| 1554 } | |
| 1555 | |
| 1556 return OK; | |
| 1557 } | |
| 1558 | |
| 1559 /* | |
| 1560 * Parse a branch, one or more concats, separated by "\&". It matches the | |
| 1561 * last concat, but only if all the preceding concats also match at the same | |
| 1562 * position. Examples: | |
| 1563 * "foobeep\&..." matches "foo" in "foobeep". | |
| 1564 * ".*Peter\&.*Bob" matches in a line containing both "Peter" and "Bob" | |
| 1565 * | |
| 1566 * branch ::= concat | |
| 1567 * or concat \& concat | |
| 1568 * or concat \& concat \& concat | |
| 1569 * etc. | |
| 1570 */ | |
| 1571 static int | |
| 1572 nfa_regbranch() | |
| 1573 { | |
| 1574 int ch; | |
| 1575 int *old_post_ptr; | |
| 1576 | |
| 1577 old_post_ptr = post_ptr; | |
| 1578 | |
| 1579 /* First branch, possibly the only one */ | |
| 1580 if (nfa_regconcat() == FAIL) | |
| 1581 return FAIL; | |
| 1582 | |
| 1583 ch = peekchr(); | |
| 1584 /* Try next concats */ | |
| 1585 while (ch == Magic('&')) | |
| 1586 { | |
| 1587 skipchr(); | |
| 1588 EMIT(NFA_NOPEN); | |
| 1589 EMIT(NFA_PREV_ATOM_NO_WIDTH); | |
| 1590 old_post_ptr = post_ptr; | |
| 1591 if (nfa_regconcat() == FAIL) | |
| 1592 return FAIL; | |
| 1593 /* if concat is empty, skip a input char. But do emit a node */ | |
| 1594 if (old_post_ptr == post_ptr) | |
| 1595 EMIT(NFA_SKIP_CHAR); | |
| 1596 EMIT(NFA_CONCAT); | |
| 1597 ch = peekchr(); | |
| 1598 } | |
| 1599 | |
| 1600 /* Even if a branch is empty, emit one node for it */ | |
| 1601 if (old_post_ptr == post_ptr) | |
| 1602 EMIT(NFA_SKIP_CHAR); | |
| 1603 | |
| 1604 return OK; | |
| 1605 } | |
| 1606 | |
| 1607 /* | |
| 1608 * Parse a pattern, one or more branches, separated by "\|". It matches | |
| 1609 * anything that matches one of the branches. Example: "foo\|beep" matches | |
| 1610 * "foo" and matches "beep". If more than one branch matches, the first one | |
| 1611 * is used. | |
| 1612 * | |
| 1613 * pattern ::= branch | |
| 1614 * or branch \| branch | |
| 1615 * or branch \| branch \| branch | |
| 1616 * etc. | |
| 1617 */ | |
| 1618 static int | |
| 1619 nfa_reg(paren) | |
| 1620 int paren; /* REG_NOPAREN, REG_PAREN, REG_NPAREN or REG_ZPAREN */ | |
| 1621 { | |
| 1622 int parno = 0; | |
| 1623 | |
| 1624 #ifdef FEAT_SYN_HL | |
| 1625 #endif | |
| 1626 if (paren == REG_PAREN) | |
| 1627 { | |
| 1628 if (regnpar >= NSUBEXP) /* Too many `(' */ | |
| 1629 { | |
| 1630 syntax_error = TRUE; | |
| 1631 EMSG_RET_FAIL(_("E872: (NFA regexp) Too many '('")); | |
| 1632 } | |
| 1633 parno = regnpar++; | |
| 1634 } | |
| 1635 | |
| 1636 if (nfa_regbranch() == FAIL) | |
| 1637 return FAIL; /* cascaded error */ | |
| 1638 | |
| 1639 while (peekchr() == Magic('|')) | |
| 1640 { | |
| 1641 skipchr(); | |
| 1642 if (nfa_regbranch() == FAIL) | |
| 1643 return FAIL; /* cascaded error */ | |
| 1644 EMIT(NFA_OR); | |
| 1645 } | |
| 1646 | |
| 1647 /* Check for proper termination. */ | |
| 1648 if (paren != REG_NOPAREN && getchr() != Magic(')')) | |
| 1649 { | |
| 1650 syntax_error = TRUE; | |
| 1651 if (paren == REG_NPAREN) | |
| 1652 EMSG2_RET_FAIL(_(e_unmatchedpp), reg_magic == MAGIC_ALL); | |
| 1653 else | |
| 1654 EMSG2_RET_FAIL(_(e_unmatchedp), reg_magic == MAGIC_ALL); | |
| 1655 } | |
| 1656 else if (paren == REG_NOPAREN && peekchr() != NUL) | |
| 1657 { | |
| 1658 syntax_error = TRUE; | |
| 1659 if (peekchr() == Magic(')')) | |
| 1660 EMSG2_RET_FAIL(_(e_unmatchedpar), reg_magic == MAGIC_ALL); | |
| 1661 else | |
| 1662 EMSG_RET_FAIL(_("E873: (NFA regexp) proper termination error")); | |
| 1663 } | |
| 1664 /* | |
| 1665 * Here we set the flag allowing back references to this set of | |
| 1666 * parentheses. | |
| 1667 */ | |
| 1668 if (paren == REG_PAREN) | |
| 1669 { | |
| 1670 had_endbrace[parno] = TRUE; /* have seen the close paren */ | |
| 1671 EMIT(NFA_MOPEN + parno); | |
| 1672 } | |
| 1673 | |
| 1674 return OK; | |
| 1675 } | |
| 1676 | |
| 1677 #ifdef DEBUG | |
| 1678 static char_u code[50]; | |
| 1679 | |
| 1680 static void | |
| 1681 nfa_set_code(c) | |
| 1682 int c; | |
| 1683 { | |
| 1684 int addnl = FALSE; | |
| 1685 | |
| 1686 if (c >= NFA_FIRST_NL && c <= NFA_LAST_NL) | |
| 1687 { | |
| 1688 addnl = TRUE; | |
| 1689 c -= ADD_NL; | |
| 1690 } | |
| 1691 | |
| 1692 STRCPY(code, ""); | |
| 1693 switch (c) | |
| 1694 { | |
| 1695 case NFA_MATCH: STRCPY(code, "NFA_MATCH "); break; | |
| 1696 case NFA_SPLIT: STRCPY(code, "NFA_SPLIT "); break; | |
| 1697 case NFA_CONCAT: STRCPY(code, "NFA_CONCAT "); break; | |
| 1698 case NFA_NEWL: STRCPY(code, "NFA_NEWL "); break; | |
| 1699 case NFA_ZSTART: STRCPY(code, "NFA_ZSTART"); break; | |
| 1700 case NFA_ZEND: STRCPY(code, "NFA_ZEND"); break; | |
| 1701 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
1702 case NFA_BACKREF1: STRCPY(code, "NFA_BACKREF1"); break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
1703 case NFA_BACKREF2: STRCPY(code, "NFA_BACKREF2"); break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
1704 case NFA_BACKREF3: STRCPY(code, "NFA_BACKREF3"); break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
1705 case NFA_BACKREF4: STRCPY(code, "NFA_BACKREF4"); break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
1706 case NFA_BACKREF5: STRCPY(code, "NFA_BACKREF5"); break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
1707 case NFA_BACKREF6: STRCPY(code, "NFA_BACKREF6"); break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
1708 case NFA_BACKREF7: STRCPY(code, "NFA_BACKREF7"); break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
1709 case NFA_BACKREF8: STRCPY(code, "NFA_BACKREF8"); break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
1710 case NFA_BACKREF9: STRCPY(code, "NFA_BACKREF9"); break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
1711 case NFA_SKIP: STRCPY(code, "NFA_SKIP"); break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
1712 |
| 4444 | 1713 case NFA_PREV_ATOM_NO_WIDTH: |
| 1714 STRCPY(code, "NFA_PREV_ATOM_NO_WIDTH"); break; | |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
1715 case NFA_PREV_ATOM_NO_WIDTH_NEG: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
1716 STRCPY(code, "NFA_PREV_ATOM_NO_WIDTH_NEG"); break; |
| 4444 | 1717 case NFA_NOPEN: STRCPY(code, "NFA_MOPEN_INVISIBLE"); break; |
| 1718 case NFA_NCLOSE: STRCPY(code, "NFA_MCLOSE_INVISIBLE"); break; | |
| 1719 case NFA_START_INVISIBLE: STRCPY(code, "NFA_START_INVISIBLE"); break; | |
| 1720 case NFA_END_INVISIBLE: STRCPY(code, "NFA_END_INVISIBLE"); break; | |
| 1721 | |
| 1722 case NFA_COMPOSING: STRCPY(code, "NFA_COMPOSING"); break; | |
| 1723 case NFA_END_COMPOSING: STRCPY(code, "NFA_END_COMPOSING"); break; | |
| 1724 | |
| 1725 case NFA_MOPEN + 0: | |
| 1726 case NFA_MOPEN + 1: | |
| 1727 case NFA_MOPEN + 2: | |
| 1728 case NFA_MOPEN + 3: | |
| 1729 case NFA_MOPEN + 4: | |
| 1730 case NFA_MOPEN + 5: | |
| 1731 case NFA_MOPEN + 6: | |
| 1732 case NFA_MOPEN + 7: | |
| 1733 case NFA_MOPEN + 8: | |
| 1734 case NFA_MOPEN + 9: | |
| 1735 STRCPY(code, "NFA_MOPEN(x)"); | |
| 1736 code[10] = c - NFA_MOPEN + '0'; | |
| 1737 break; | |
| 1738 case NFA_MCLOSE + 0: | |
| 1739 case NFA_MCLOSE + 1: | |
| 1740 case NFA_MCLOSE + 2: | |
| 1741 case NFA_MCLOSE + 3: | |
| 1742 case NFA_MCLOSE + 4: | |
| 1743 case NFA_MCLOSE + 5: | |
| 1744 case NFA_MCLOSE + 6: | |
| 1745 case NFA_MCLOSE + 7: | |
| 1746 case NFA_MCLOSE + 8: | |
| 1747 case NFA_MCLOSE + 9: | |
| 1748 STRCPY(code, "NFA_MCLOSE(x)"); | |
| 1749 code[11] = c - NFA_MCLOSE + '0'; | |
| 1750 break; | |
| 1751 case NFA_EOL: STRCPY(code, "NFA_EOL "); break; | |
| 1752 case NFA_BOL: STRCPY(code, "NFA_BOL "); break; | |
| 1753 case NFA_EOW: STRCPY(code, "NFA_EOW "); break; | |
| 1754 case NFA_BOW: STRCPY(code, "NFA_BOW "); break; | |
| 1755 case NFA_STAR: STRCPY(code, "NFA_STAR "); break; | |
| 1756 case NFA_PLUS: STRCPY(code, "NFA_PLUS "); break; | |
| 1757 case NFA_NOT: STRCPY(code, "NFA_NOT "); break; | |
| 1758 case NFA_SKIP_CHAR: STRCPY(code, "NFA_SKIP_CHAR"); break; | |
| 1759 case NFA_OR: STRCPY(code, "NFA_OR"); break; | |
| 1760 case NFA_QUEST: STRCPY(code, "NFA_QUEST"); break; | |
| 1761 case NFA_QUEST_NONGREEDY: STRCPY(code, "NFA_QUEST_NON_GREEDY"); break; | |
| 1762 case NFA_END_NEG_RANGE: STRCPY(code, "NFA_END_NEG_RANGE"); break; | |
| 1763 case NFA_CLASS_ALNUM: STRCPY(code, "NFA_CLASS_ALNUM"); break; | |
| 1764 case NFA_CLASS_ALPHA: STRCPY(code, "NFA_CLASS_ALPHA"); break; | |
| 1765 case NFA_CLASS_BLANK: STRCPY(code, "NFA_CLASS_BLANK"); break; | |
| 1766 case NFA_CLASS_CNTRL: STRCPY(code, "NFA_CLASS_CNTRL"); break; | |
| 1767 case NFA_CLASS_DIGIT: STRCPY(code, "NFA_CLASS_DIGIT"); break; | |
| 1768 case NFA_CLASS_GRAPH: STRCPY(code, "NFA_CLASS_GRAPH"); break; | |
| 1769 case NFA_CLASS_LOWER: STRCPY(code, "NFA_CLASS_LOWER"); break; | |
| 1770 case NFA_CLASS_PRINT: STRCPY(code, "NFA_CLASS_PRINT"); break; | |
| 1771 case NFA_CLASS_PUNCT: STRCPY(code, "NFA_CLASS_PUNCT"); break; | |
| 1772 case NFA_CLASS_SPACE: STRCPY(code, "NFA_CLASS_SPACE"); break; | |
| 1773 case NFA_CLASS_UPPER: STRCPY(code, "NFA_CLASS_UPPER"); break; | |
| 1774 case NFA_CLASS_XDIGIT: STRCPY(code, "NFA_CLASS_XDIGIT"); break; | |
| 1775 case NFA_CLASS_TAB: STRCPY(code, "NFA_CLASS_TAB"); break; | |
| 1776 case NFA_CLASS_RETURN: STRCPY(code, "NFA_CLASS_RETURN"); break; | |
| 1777 case NFA_CLASS_BACKSPACE: STRCPY(code, "NFA_CLASS_BACKSPACE"); break; | |
| 1778 case NFA_CLASS_ESCAPE: STRCPY(code, "NFA_CLASS_ESCAPE"); break; | |
| 1779 | |
| 1780 case NFA_ANY: STRCPY(code, "NFA_ANY"); break; | |
| 1781 case NFA_IDENT: STRCPY(code, "NFA_IDENT"); break; | |
| 1782 case NFA_SIDENT:STRCPY(code, "NFA_SIDENT"); break; | |
| 1783 case NFA_KWORD: STRCPY(code, "NFA_KWORD"); break; | |
| 1784 case NFA_SKWORD:STRCPY(code, "NFA_SKWORD"); break; | |
| 1785 case NFA_FNAME: STRCPY(code, "NFA_FNAME"); break; | |
| 1786 case NFA_SFNAME:STRCPY(code, "NFA_SFNAME"); break; | |
| 1787 case NFA_PRINT: STRCPY(code, "NFA_PRINT"); break; | |
| 1788 case NFA_SPRINT:STRCPY(code, "NFA_SPRINT"); break; | |
| 1789 case NFA_WHITE: STRCPY(code, "NFA_WHITE"); break; | |
| 1790 case NFA_NWHITE:STRCPY(code, "NFA_NWHITE"); break; | |
| 1791 case NFA_DIGIT: STRCPY(code, "NFA_DIGIT"); break; | |
| 1792 case NFA_NDIGIT:STRCPY(code, "NFA_NDIGIT"); break; | |
| 1793 case NFA_HEX: STRCPY(code, "NFA_HEX"); break; | |
| 1794 case NFA_NHEX: STRCPY(code, "NFA_NHEX"); break; | |
| 1795 case NFA_OCTAL: STRCPY(code, "NFA_OCTAL"); break; | |
| 1796 case NFA_NOCTAL:STRCPY(code, "NFA_NOCTAL"); break; | |
| 1797 case NFA_WORD: STRCPY(code, "NFA_WORD"); break; | |
| 1798 case NFA_NWORD: STRCPY(code, "NFA_NWORD"); break; | |
| 1799 case NFA_HEAD: STRCPY(code, "NFA_HEAD"); break; | |
| 1800 case NFA_NHEAD: STRCPY(code, "NFA_NHEAD"); break; | |
| 1801 case NFA_ALPHA: STRCPY(code, "NFA_ALPHA"); break; | |
| 1802 case NFA_NALPHA:STRCPY(code, "NFA_NALPHA"); break; | |
| 1803 case NFA_LOWER: STRCPY(code, "NFA_LOWER"); break; | |
| 1804 case NFA_NLOWER:STRCPY(code, "NFA_NLOWER"); break; | |
| 1805 case NFA_UPPER: STRCPY(code, "NFA_UPPER"); break; | |
| 1806 case NFA_NUPPER:STRCPY(code, "NFA_NUPPER"); break; | |
| 1807 | |
| 1808 default: | |
| 1809 STRCPY(code, "CHAR(x)"); | |
| 1810 code[5] = c; | |
| 1811 } | |
| 1812 | |
| 1813 if (addnl == TRUE) | |
| 1814 STRCAT(code, " + NEWLINE "); | |
| 1815 | |
| 1816 } | |
| 1817 | |
| 1818 #ifdef ENABLE_LOG | |
| 1819 static FILE *log_fd; | |
| 1820 | |
| 1821 /* | |
| 1822 * Print the postfix notation of the current regexp. | |
| 1823 */ | |
| 1824 static void | |
| 1825 nfa_postfix_dump(expr, retval) | |
| 1826 char_u *expr; | |
| 1827 int retval; | |
| 1828 { | |
| 1829 int *p; | |
| 1830 FILE *f; | |
| 1831 | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
1832 f = fopen(NFA_REGEXP_DUMP_LOG, "a"); |
| 4444 | 1833 if (f != NULL) |
| 1834 { | |
| 1835 fprintf(f, "\n-------------------------\n"); | |
| 1836 if (retval == FAIL) | |
| 1837 fprintf(f, ">>> NFA engine failed ... \n"); | |
| 1838 else if (retval == OK) | |
| 1839 fprintf(f, ">>> NFA engine succeeded !\n"); | |
| 1840 fprintf(f, "Regexp: \"%s\"\nPostfix notation (char): \"", expr); | |
| 4464 | 1841 for (p = post_start; *p && p < post_end; p++) |
| 4444 | 1842 { |
| 1843 nfa_set_code(*p); | |
| 1844 fprintf(f, "%s, ", code); | |
| 1845 } | |
| 1846 fprintf(f, "\"\nPostfix notation (int): "); | |
| 4464 | 1847 for (p = post_start; *p && p < post_end; p++) |
| 4444 | 1848 fprintf(f, "%d ", *p); |
| 1849 fprintf(f, "\n\n"); | |
| 1850 fclose(f); | |
| 1851 } | |
| 1852 } | |
| 1853 | |
| 1854 /* | |
| 1855 * Print the NFA starting with a root node "state". | |
| 1856 */ | |
| 1857 static void | |
|
4533
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1858 nfa_print_state(debugf, state) |
| 4444 | 1859 FILE *debugf; |
| 1860 nfa_state_T *state; | |
| 1861 { | |
|
4533
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1862 garray_T indent; |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1863 |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1864 ga_init2(&indent, 1, 64); |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1865 ga_append(&indent, '\0'); |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1866 nfa_print_state2(debugf, state, &indent); |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1867 ga_clear(&indent); |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1868 } |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1869 |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1870 static void |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1871 nfa_print_state2(debugf, state, indent) |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1872 FILE *debugf; |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1873 nfa_state_T *state; |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1874 garray_T *indent; |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1875 { |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1876 char_u *p; |
| 4444 | 1877 |
| 1878 if (state == NULL) | |
| 1879 return; | |
| 1880 | |
| 1881 fprintf(debugf, "(%2d)", abs(state->id)); | |
|
4533
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1882 |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1883 /* Output indent */ |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1884 p = (char_u *)indent->ga_data; |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1885 if (indent->ga_len >= 3) |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1886 { |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1887 int last = indent->ga_len - 3; |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1888 char_u save[2]; |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1889 |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1890 STRNCPY(save, &p[last], 2); |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1891 STRNCPY(&p[last], "+-", 2); |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1892 fprintf(debugf, " %s", p); |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1893 STRNCPY(&p[last], save, 2); |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1894 } |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1895 else |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1896 fprintf(debugf, " %s", p); |
| 4444 | 1897 |
| 1898 nfa_set_code(state->c); | |
|
4533
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1899 fprintf(debugf, "%s%s (%d) (id=%d)\n", |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1900 state->negated ? "NOT " : "", code, state->c, abs(state->id)); |
| 4444 | 1901 if (state->id < 0) |
| 1902 return; | |
| 1903 | |
| 1904 state->id = abs(state->id) * -1; | |
|
4533
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1905 |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1906 /* grow indent for state->out */ |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1907 indent->ga_len -= 1; |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1908 if (state->out1) |
|
4537
5cc98a5898cf
updated for version 7.3.1016
Bram Moolenaar <bram@vim.org>
parents:
4535
diff
changeset
|
1909 ga_concat(indent, (char_u *)"| "); |
|
4533
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1910 else |
|
4537
5cc98a5898cf
updated for version 7.3.1016
Bram Moolenaar <bram@vim.org>
parents:
4535
diff
changeset
|
1911 ga_concat(indent, (char_u *)" "); |
|
4533
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1912 ga_append(indent, '\0'); |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1913 |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1914 nfa_print_state2(debugf, state->out, indent); |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1915 |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1916 /* replace last part of indent for state->out1 */ |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1917 indent->ga_len -= 3; |
|
4537
5cc98a5898cf
updated for version 7.3.1016
Bram Moolenaar <bram@vim.org>
parents:
4535
diff
changeset
|
1918 ga_concat(indent, (char_u *)" "); |
|
4533
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1919 ga_append(indent, '\0'); |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1920 |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1921 nfa_print_state2(debugf, state->out1, indent); |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1922 |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1923 /* shrink indent */ |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1924 indent->ga_len -= 3; |
|
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1925 ga_append(indent, '\0'); |
| 4444 | 1926 } |
| 1927 | |
| 1928 /* | |
| 1929 * Print the NFA state machine. | |
| 1930 */ | |
| 1931 static void | |
| 1932 nfa_dump(prog) | |
| 1933 nfa_regprog_T *prog; | |
| 1934 { | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
1935 FILE *debugf = fopen(NFA_REGEXP_DUMP_LOG, "a"); |
| 4444 | 1936 |
| 1937 if (debugf != NULL) | |
| 1938 { | |
|
4533
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
1939 nfa_print_state(debugf, prog->start); |
| 4444 | 1940 fclose(debugf); |
| 1941 } | |
| 1942 } | |
| 1943 #endif /* ENABLE_LOG */ | |
| 1944 #endif /* DEBUG */ | |
| 1945 | |
| 1946 /* | |
| 1947 * Parse r.e. @expr and convert it into postfix form. | |
| 1948 * Return the postfix string on success, NULL otherwise. | |
| 1949 */ | |
| 1950 static int * | |
| 1951 re2post() | |
| 1952 { | |
| 1953 if (nfa_reg(REG_NOPAREN) == FAIL) | |
| 1954 return NULL; | |
| 1955 EMIT(NFA_MOPEN); | |
| 1956 return post_start; | |
| 1957 } | |
| 1958 | |
| 1959 /* NB. Some of the code below is inspired by Russ's. */ | |
| 1960 | |
| 1961 /* | |
| 1962 * Represents an NFA state plus zero or one or two arrows exiting. | |
| 1963 * if c == MATCH, no arrows out; matching state. | |
| 1964 * If c == SPLIT, unlabeled arrows to out and out1 (if != NULL). | |
| 1965 * If c < 256, labeled arrow with character c to out. | |
| 1966 */ | |
| 1967 | |
| 1968 static nfa_state_T *state_ptr; /* points to nfa_prog->state */ | |
| 1969 | |
| 1970 /* | |
| 1971 * Allocate and initialize nfa_state_T. | |
| 1972 */ | |
| 1973 static nfa_state_T * | |
| 1974 new_state(c, out, out1) | |
| 1975 int c; | |
| 1976 nfa_state_T *out; | |
| 1977 nfa_state_T *out1; | |
| 1978 { | |
| 1979 nfa_state_T *s; | |
| 1980 | |
| 1981 if (istate >= nstate) | |
| 1982 return NULL; | |
| 1983 | |
| 1984 s = &state_ptr[istate++]; | |
| 1985 | |
| 1986 s->c = c; | |
| 1987 s->out = out; | |
| 1988 s->out1 = out1; | |
| 1989 | |
| 1990 s->id = istate; | |
| 1991 s->lastlist = 0; | |
| 1992 s->negated = FALSE; | |
| 1993 | |
| 1994 return s; | |
| 1995 } | |
| 1996 | |
| 1997 /* | |
| 1998 * A partially built NFA without the matching state filled in. | |
| 1999 * Frag_T.start points at the start state. | |
| 2000 * Frag_T.out is a list of places that need to be set to the | |
| 2001 * next state for this fragment. | |
| 2002 */ | |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
2003 |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
2004 /* Since the out pointers in the list are always |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
2005 * uninitialized, we use the pointers themselves |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
2006 * as storage for the Ptrlists. */ |
| 4444 | 2007 typedef union Ptrlist Ptrlist; |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
2008 union Ptrlist |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
2009 { |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
2010 Ptrlist *next; |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
2011 nfa_state_T *s; |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
2012 }; |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
2013 |
| 4444 | 2014 struct Frag |
| 2015 { | |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
2016 nfa_state_T *start; |
| 4444 | 2017 Ptrlist *out; |
| 2018 }; | |
| 2019 typedef struct Frag Frag_T; | |
| 2020 | |
| 2021 static Frag_T frag __ARGS((nfa_state_T *start, Ptrlist *out)); | |
| 2022 static Ptrlist *list1 __ARGS((nfa_state_T **outp)); | |
| 2023 static void patch __ARGS((Ptrlist *l, nfa_state_T *s)); | |
| 2024 static Ptrlist *append __ARGS((Ptrlist *l1, Ptrlist *l2)); | |
| 2025 static void st_push __ARGS((Frag_T s, Frag_T **p, Frag_T *stack_end)); | |
| 2026 static Frag_T st_pop __ARGS((Frag_T **p, Frag_T *stack)); | |
| 2027 | |
| 2028 /* | |
| 4456 | 2029 * Initialize a Frag_T struct and return it. |
| 4444 | 2030 */ |
| 2031 static Frag_T | |
| 2032 frag(start, out) | |
| 2033 nfa_state_T *start; | |
| 2034 Ptrlist *out; | |
| 2035 { | |
| 4456 | 2036 Frag_T n; |
| 2037 | |
| 2038 n.start = start; | |
| 2039 n.out = out; | |
| 4444 | 2040 return n; |
| 2041 } | |
| 2042 | |
| 2043 /* | |
| 2044 * Create singleton list containing just outp. | |
| 2045 */ | |
| 2046 static Ptrlist * | |
| 2047 list1(outp) | |
| 2048 nfa_state_T **outp; | |
| 2049 { | |
| 2050 Ptrlist *l; | |
| 2051 | |
| 2052 l = (Ptrlist *)outp; | |
| 2053 l->next = NULL; | |
| 2054 return l; | |
| 2055 } | |
| 2056 | |
| 2057 /* | |
| 2058 * Patch the list of states at out to point to start. | |
| 2059 */ | |
| 2060 static void | |
| 2061 patch(l, s) | |
| 2062 Ptrlist *l; | |
| 2063 nfa_state_T *s; | |
| 2064 { | |
| 2065 Ptrlist *next; | |
| 2066 | |
| 2067 for (; l; l = next) | |
| 2068 { | |
| 2069 next = l->next; | |
| 2070 l->s = s; | |
| 2071 } | |
| 2072 } | |
| 2073 | |
| 2074 | |
| 2075 /* | |
| 2076 * Join the two lists l1 and l2, returning the combination. | |
| 2077 */ | |
| 2078 static Ptrlist * | |
| 2079 append(l1, l2) | |
| 2080 Ptrlist *l1; | |
| 2081 Ptrlist *l2; | |
| 2082 { | |
| 2083 Ptrlist *oldl1; | |
| 2084 | |
| 2085 oldl1 = l1; | |
| 2086 while (l1->next) | |
| 2087 l1 = l1->next; | |
| 2088 l1->next = l2; | |
| 2089 return oldl1; | |
| 2090 } | |
| 2091 | |
| 2092 /* | |
| 2093 * Stack used for transforming postfix form into NFA. | |
| 2094 */ | |
| 2095 static Frag_T empty; | |
| 2096 | |
| 2097 static void | |
| 2098 st_error(postfix, end, p) | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2099 int *postfix UNUSED; |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2100 int *end UNUSED; |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2101 int *p UNUSED; |
| 4444 | 2102 { |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2103 #ifdef NFA_REGEXP_ERROR_LOG |
| 4444 | 2104 FILE *df; |
| 2105 int *p2; | |
| 2106 | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2107 df = fopen(NFA_REGEXP_ERROR_LOG, "a"); |
| 4444 | 2108 if (df) |
| 2109 { | |
| 2110 fprintf(df, "Error popping the stack!\n"); | |
| 2111 #ifdef DEBUG | |
| 2112 fprintf(df, "Current regexp is \"%s\"\n", nfa_regengine.expr); | |
| 2113 #endif | |
| 2114 fprintf(df, "Postfix form is: "); | |
| 2115 #ifdef DEBUG | |
| 2116 for (p2 = postfix; p2 < end; p2++) | |
| 2117 { | |
| 2118 nfa_set_code(*p2); | |
| 2119 fprintf(df, "%s, ", code); | |
| 2120 } | |
| 2121 nfa_set_code(*p); | |
| 2122 fprintf(df, "\nCurrent position is: "); | |
| 2123 for (p2 = postfix; p2 <= p; p2 ++) | |
| 2124 { | |
| 2125 nfa_set_code(*p2); | |
| 2126 fprintf(df, "%s, ", code); | |
| 2127 } | |
| 2128 #else | |
| 2129 for (p2 = postfix; p2 < end; p2++) | |
| 2130 { | |
| 2131 fprintf(df, "%d, ", *p2); | |
| 2132 } | |
| 2133 fprintf(df, "\nCurrent position is: "); | |
| 2134 for (p2 = postfix; p2 <= p; p2 ++) | |
| 2135 { | |
| 2136 fprintf(df, "%d, ", *p2); | |
| 2137 } | |
| 2138 #endif | |
| 2139 fprintf(df, "\n--------------------------\n"); | |
| 2140 fclose(df); | |
| 2141 } | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2142 #endif |
| 4444 | 2143 EMSG(_("E874: (NFA) Could not pop the stack !")); |
| 2144 } | |
| 2145 | |
| 2146 /* | |
| 2147 * Push an item onto the stack. | |
| 2148 */ | |
| 2149 static void | |
| 2150 st_push(s, p, stack_end) | |
| 2151 Frag_T s; | |
| 2152 Frag_T **p; | |
| 2153 Frag_T *stack_end; | |
| 2154 { | |
| 2155 Frag_T *stackp = *p; | |
| 2156 | |
| 2157 if (stackp >= stack_end) | |
| 2158 return; | |
| 2159 *stackp = s; | |
| 2160 *p = *p + 1; | |
| 2161 } | |
| 2162 | |
| 2163 /* | |
| 2164 * Pop an item from the stack. | |
| 2165 */ | |
| 2166 static Frag_T | |
| 2167 st_pop(p, stack) | |
| 2168 Frag_T **p; | |
| 2169 Frag_T *stack; | |
| 2170 { | |
| 2171 Frag_T *stackp; | |
| 2172 | |
| 2173 *p = *p - 1; | |
| 2174 stackp = *p; | |
| 2175 if (stackp < stack) | |
| 2176 return empty; | |
| 2177 return **p; | |
| 2178 } | |
| 2179 | |
| 2180 /* | |
| 2181 * Convert a postfix form into its equivalent NFA. | |
| 2182 * Return the NFA start state on success, NULL otherwise. | |
| 2183 */ | |
| 2184 static nfa_state_T * | |
| 2185 post2nfa(postfix, end, nfa_calc_size) | |
| 2186 int *postfix; | |
| 2187 int *end; | |
| 2188 int nfa_calc_size; | |
| 2189 { | |
| 2190 int *p; | |
| 2191 int mopen; | |
| 2192 int mclose; | |
| 2193 Frag_T *stack = NULL; | |
| 2194 Frag_T *stackp = NULL; | |
| 2195 Frag_T *stack_end = NULL; | |
| 2196 Frag_T e1; | |
| 2197 Frag_T e2; | |
| 2198 Frag_T e; | |
| 2199 nfa_state_T *s; | |
| 2200 nfa_state_T *s1; | |
| 2201 nfa_state_T *matchstate; | |
| 4484 | 2202 nfa_state_T *ret = NULL; |
| 4444 | 2203 |
| 2204 if (postfix == NULL) | |
| 2205 return NULL; | |
| 2206 | |
| 4456 | 2207 #define PUSH(s) st_push((s), &stackp, stack_end) |
| 4444 | 2208 #define POP() st_pop(&stackp, stack); \ |
| 2209 if (stackp < stack) \ | |
| 2210 { \ | |
| 2211 st_error(postfix, end, p); \ | |
| 2212 return NULL; \ | |
| 2213 } | |
| 2214 | |
| 2215 if (nfa_calc_size == FALSE) | |
| 2216 { | |
| 2217 /* Allocate space for the stack. Max states on the stack : nstate */ | |
| 4462 | 2218 stack = (Frag_T *) lalloc((nstate + 1) * sizeof(Frag_T), TRUE); |
| 4444 | 2219 stackp = stack; |
| 4462 | 2220 stack_end = stack + (nstate + 1); |
| 4444 | 2221 } |
| 2222 | |
| 2223 for (p = postfix; p < end; ++p) | |
| 2224 { | |
| 2225 switch (*p) | |
| 2226 { | |
| 2227 case NFA_CONCAT: | |
| 2228 /* Catenation. | |
| 2229 * Pay attention: this operator does not exist | |
| 2230 * in the r.e. itself (it is implicit, really). | |
| 2231 * It is added when r.e. is translated to postfix | |
| 2232 * form in re2post(). | |
| 2233 * | |
| 2234 * No new state added here. */ | |
| 2235 if (nfa_calc_size == TRUE) | |
| 2236 { | |
| 4458 | 2237 /* nstate += 0; */ |
| 4444 | 2238 break; |
| 2239 } | |
| 2240 e2 = POP(); | |
| 2241 e1 = POP(); | |
| 2242 patch(e1.out, e2.start); | |
| 2243 PUSH(frag(e1.start, e2.out)); | |
| 2244 break; | |
| 2245 | |
| 2246 case NFA_NOT: | |
| 2247 /* Negation of a character */ | |
| 2248 if (nfa_calc_size == TRUE) | |
| 2249 { | |
| 4458 | 2250 /* nstate += 0; */ |
| 4444 | 2251 break; |
| 2252 } | |
| 2253 e1 = POP(); | |
| 2254 e1.start->negated = TRUE; | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2255 #ifdef FEAT_MBYTE |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2256 if (e1.start->c == NFA_COMPOSING) |
| 4444 | 2257 e1.start->out1->negated = TRUE; |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2258 #endif |
| 4444 | 2259 PUSH(e1); |
| 2260 break; | |
| 2261 | |
| 2262 case NFA_OR: | |
| 2263 /* Alternation */ | |
| 2264 if (nfa_calc_size == TRUE) | |
| 2265 { | |
| 4458 | 2266 nstate++; |
| 4444 | 2267 break; |
| 2268 } | |
| 2269 e2 = POP(); | |
| 2270 e1 = POP(); | |
| 2271 s = new_state(NFA_SPLIT, e1.start, e2.start); | |
| 2272 if (s == NULL) | |
| 4484 | 2273 goto theend; |
| 4444 | 2274 PUSH(frag(s, append(e1.out, e2.out))); |
| 2275 break; | |
| 2276 | |
| 2277 case NFA_STAR: | |
| 2278 /* Zero or more */ | |
| 2279 if (nfa_calc_size == TRUE) | |
| 2280 { | |
| 4458 | 2281 nstate++; |
| 4444 | 2282 break; |
| 2283 } | |
| 2284 e = POP(); | |
| 2285 s = new_state(NFA_SPLIT, e.start, NULL); | |
| 2286 if (s == NULL) | |
| 4484 | 2287 goto theend; |
| 4444 | 2288 patch(e.out, s); |
| 2289 PUSH(frag(s, list1(&s->out1))); | |
| 2290 break; | |
| 2291 | |
| 2292 case NFA_QUEST: | |
| 2293 /* one or zero atoms=> greedy match */ | |
| 2294 if (nfa_calc_size == TRUE) | |
| 2295 { | |
| 4458 | 2296 nstate++; |
| 4444 | 2297 break; |
| 2298 } | |
| 2299 e = POP(); | |
| 2300 s = new_state(NFA_SPLIT, e.start, NULL); | |
| 2301 if (s == NULL) | |
| 4484 | 2302 goto theend; |
| 4444 | 2303 PUSH(frag(s, append(e.out, list1(&s->out1)))); |
| 2304 break; | |
| 2305 | |
| 2306 case NFA_QUEST_NONGREEDY: | |
| 2307 /* zero or one atoms => non-greedy match */ | |
| 2308 if (nfa_calc_size == TRUE) | |
| 2309 { | |
| 4458 | 2310 nstate++; |
| 4444 | 2311 break; |
| 2312 } | |
| 2313 e = POP(); | |
| 2314 s = new_state(NFA_SPLIT, NULL, e.start); | |
| 2315 if (s == NULL) | |
| 4484 | 2316 goto theend; |
| 4444 | 2317 PUSH(frag(s, append(e.out, list1(&s->out)))); |
| 2318 break; | |
| 2319 | |
| 2320 case NFA_PLUS: | |
| 2321 /* One or more */ | |
| 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 patch(e.out, s); |
| 2332 PUSH(frag(e.start, list1(&s->out1))); | |
| 2333 break; | |
| 2334 | |
| 2335 case NFA_SKIP_CHAR: | |
| 2336 /* Symbol of 0-length, Used in a repetition | |
| 2337 * with max/min count of 0 */ | |
| 2338 if (nfa_calc_size == TRUE) | |
| 2339 { | |
| 4458 | 2340 nstate++; |
| 4444 | 2341 break; |
| 2342 } | |
| 2343 s = new_state(NFA_SKIP_CHAR, NULL, NULL); | |
| 2344 if (s == NULL) | |
| 4484 | 2345 goto theend; |
| 4444 | 2346 PUSH(frag(s, list1(&s->out))); |
| 2347 break; | |
| 2348 | |
| 2349 case NFA_PREV_ATOM_NO_WIDTH: | |
| 2350 /* The \@= operator: match the preceding atom with 0 width. | |
| 2351 * Surrounds the preceding atom with START_INVISIBLE and | |
| 2352 * END_INVISIBLE, similarly to MOPEN. | |
| 2353 */ | |
| 2354 /* TODO: Maybe this drops the speed? */ | |
| 4484 | 2355 goto theend; |
| 4444 | 2356 |
| 2357 if (nfa_calc_size == TRUE) | |
| 2358 { | |
| 2359 nstate += 2; | |
| 2360 break; | |
| 2361 } | |
| 2362 e = POP(); | |
| 2363 s1 = new_state(NFA_END_INVISIBLE, NULL, NULL); | |
| 2364 if (s1 == NULL) | |
| 4484 | 2365 goto theend; |
| 4444 | 2366 patch(e.out, s1); |
| 2367 | |
| 2368 s = new_state(NFA_START_INVISIBLE, e.start, s1); | |
| 2369 if (s == NULL) | |
| 4484 | 2370 goto theend; |
| 4444 | 2371 PUSH(frag(s, list1(&s1->out))); |
| 2372 break; | |
| 2373 | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2374 #ifdef FEAT_MBYTE |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2375 case NFA_COMPOSING: /* char with composing char */ |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2376 #if 0 |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2377 /* TODO */ |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2378 if (regflags & RF_ICOMBINE) |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2379 { |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
2380 /* use the base character only */ |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2381 } |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2382 #endif |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2383 /* FALLTHROUGH */ |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2384 #endif |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2385 |
| 4444 | 2386 case NFA_MOPEN + 0: /* Submatch */ |
| 2387 case NFA_MOPEN + 1: | |
| 2388 case NFA_MOPEN + 2: | |
| 2389 case NFA_MOPEN + 3: | |
| 2390 case NFA_MOPEN + 4: | |
| 2391 case NFA_MOPEN + 5: | |
| 2392 case NFA_MOPEN + 6: | |
| 2393 case NFA_MOPEN + 7: | |
| 2394 case NFA_MOPEN + 8: | |
| 2395 case NFA_MOPEN + 9: | |
| 2396 case NFA_NOPEN: /* \%( "Invisible Submatch" */ | |
| 2397 if (nfa_calc_size == TRUE) | |
| 2398 { | |
| 2399 nstate += 2; | |
| 2400 break; | |
| 2401 } | |
| 2402 | |
| 2403 mopen = *p; | |
| 2404 switch (*p) | |
| 2405 { | |
| 2406 case NFA_NOPEN: | |
| 2407 mclose = NFA_NCLOSE; | |
| 2408 break; | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2409 #ifdef FEAT_MBYTE |
| 4444 | 2410 case NFA_COMPOSING: |
| 2411 mclose = NFA_END_COMPOSING; | |
| 2412 break; | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2413 #endif |
| 4444 | 2414 default: |
| 2415 /* NFA_MOPEN(0) ... NFA_MOPEN(9) */ | |
| 2416 mclose = *p + NSUBEXP; | |
| 2417 break; | |
| 2418 } | |
| 2419 | |
| 2420 /* Allow "NFA_MOPEN" as a valid postfix representation for | |
| 2421 * the empty regexp "". In this case, the NFA will be | |
| 2422 * NFA_MOPEN -> NFA_MCLOSE. Note that this also allows | |
| 2423 * empty groups of parenthesis, and empty mbyte chars */ | |
| 2424 if (stackp == stack) | |
| 2425 { | |
| 2426 s = new_state(mopen, NULL, NULL); | |
| 2427 if (s == NULL) | |
| 4484 | 2428 goto theend; |
| 4444 | 2429 s1 = new_state(mclose, NULL, NULL); |
| 2430 if (s1 == NULL) | |
| 4484 | 2431 goto theend; |
| 4444 | 2432 patch(list1(&s->out), s1); |
| 2433 PUSH(frag(s, list1(&s1->out))); | |
| 2434 break; | |
| 2435 } | |
| 2436 | |
| 2437 /* At least one node was emitted before NFA_MOPEN, so | |
| 2438 * at least one node will be between NFA_MOPEN and NFA_MCLOSE */ | |
| 2439 e = POP(); | |
| 2440 s = new_state(mopen, e.start, NULL); /* `(' */ | |
| 2441 if (s == NULL) | |
| 4484 | 2442 goto theend; |
| 4444 | 2443 |
| 2444 s1 = new_state(mclose, NULL, NULL); /* `)' */ | |
| 2445 if (s1 == NULL) | |
| 4484 | 2446 goto theend; |
| 4444 | 2447 patch(e.out, s1); |
| 2448 | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2449 #ifdef FEAT_MBYTE |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2450 if (mopen == NFA_COMPOSING) |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2451 /* COMPOSING->out1 = END_COMPOSING */ |
| 4444 | 2452 patch(list1(&s->out1), s1); |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2453 #endif |
| 4444 | 2454 |
| 2455 PUSH(frag(s, list1(&s1->out))); | |
| 2456 break; | |
| 2457 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2458 case NFA_BACKREF1: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2459 case NFA_BACKREF2: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2460 case NFA_BACKREF3: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2461 case NFA_BACKREF4: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2462 case NFA_BACKREF5: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2463 case NFA_BACKREF6: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2464 case NFA_BACKREF7: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2465 case NFA_BACKREF8: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2466 case NFA_BACKREF9: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2467 if (nfa_calc_size == TRUE) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2468 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2469 nstate += 2; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2470 break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2471 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2472 s = new_state(*p, NULL, NULL); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2473 if (s == NULL) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2474 goto theend; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2475 s1 = new_state(NFA_SKIP, NULL, NULL); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2476 if (s1 == NULL) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2477 goto theend; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2478 patch(list1(&s->out), s1); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2479 PUSH(frag(s, list1(&s1->out))); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2480 break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2481 |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2482 case NFA_LNUM: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2483 case NFA_LNUM_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2484 case NFA_LNUM_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2485 case NFA_VCOL: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2486 case NFA_VCOL_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2487 case NFA_VCOL_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2488 case NFA_COL: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2489 case NFA_COL_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2490 case NFA_COL_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2491 if (nfa_calc_size == TRUE) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2492 { |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2493 nstate += 1; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2494 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2495 } |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2496 e1 = POP(); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2497 s = new_state(*p, NULL, NULL); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2498 if (s == NULL) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2499 goto theend; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2500 s->val = e1.start->c; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2501 PUSH(frag(s, list1(&s->out))); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2502 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2503 |
| 4444 | 2504 case NFA_ZSTART: |
| 2505 case NFA_ZEND: | |
| 2506 default: | |
| 2507 /* Operands */ | |
| 2508 if (nfa_calc_size == TRUE) | |
| 2509 { | |
| 4458 | 2510 nstate++; |
| 4444 | 2511 break; |
| 2512 } | |
| 2513 s = new_state(*p, NULL, NULL); | |
| 2514 if (s == NULL) | |
| 4484 | 2515 goto theend; |
| 4444 | 2516 PUSH(frag(s, list1(&s->out))); |
| 2517 break; | |
| 2518 | |
| 2519 } /* switch(*p) */ | |
| 2520 | |
| 2521 } /* for(p = postfix; *p; ++p) */ | |
| 2522 | |
| 2523 if (nfa_calc_size == TRUE) | |
| 2524 { | |
| 4458 | 2525 nstate++; |
| 4484 | 2526 goto theend; /* Return value when counting size is ignored anyway */ |
| 4444 | 2527 } |
| 2528 | |
| 2529 e = POP(); | |
| 2530 if (stackp != stack) | |
| 2531 EMSG_RET_NULL(_("E875: (NFA regexp) (While converting from postfix to NFA), too many states left on stack")); | |
| 2532 | |
| 2533 if (istate >= nstate) | |
| 2534 EMSG_RET_NULL(_("E876: (NFA regexp) Not enough space to store the whole NFA ")); | |
| 2535 | |
| 2536 matchstate = &state_ptr[istate++]; /* the match state */ | |
| 2537 matchstate->c = NFA_MATCH; | |
| 2538 matchstate->out = matchstate->out1 = NULL; | |
| 2539 | |
| 2540 patch(e.out, matchstate); | |
| 4484 | 2541 ret = e.start; |
| 2542 | |
| 2543 theend: | |
| 2544 vim_free(stack); | |
| 2545 return ret; | |
| 4444 | 2546 |
| 2547 #undef POP1 | |
| 2548 #undef PUSH1 | |
| 2549 #undef POP2 | |
| 2550 #undef PUSH2 | |
| 2551 #undef POP | |
| 2552 #undef PUSH | |
| 2553 } | |
| 2554 | |
| 2555 /**************************************************************** | |
| 2556 * NFA execution code. | |
| 2557 ****************************************************************/ | |
| 2558 | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2559 typedef struct |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2560 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2561 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
|
2562 |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2563 /* 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
|
2564 union |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2565 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2566 struct multipos |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2567 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2568 lpos_T start; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2569 lpos_T end; |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2570 } multi[NSUBEXP]; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2571 struct linepos |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2572 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2573 char_u *start; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2574 char_u *end; |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2575 } line[NSUBEXP]; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2576 } list; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2577 } regsub_T; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2578 |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2579 /* 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
|
2580 typedef struct |
| 4444 | 2581 { |
| 2582 nfa_state_T *state; | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2583 int count; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2584 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
|
2585 } nfa_thread_T; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2586 |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2587 /* nfa_list_T contains the alternative NFA execution states. */ |
| 4444 | 2588 typedef struct |
| 2589 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2590 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
|
2591 int n; /* nr of states currently in "t" */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2592 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
|
2593 int id; /* ID of the list */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2594 } nfa_list_T; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2595 |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2596 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2597 static void |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2598 log_subexpr(sub) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2599 regsub_T *sub; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2600 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2601 int j; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2602 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2603 for (j = 0; j < sub->in_use; j++) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2604 if (REG_MULTI) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2605 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
|
2606 j, |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2607 sub->list.multi[j].start.col, |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2608 (int)sub->list.multi[j].start.lnum, |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2609 sub->list.multi[j].end.col, |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2610 (int)sub->list.multi[j].end.lnum); |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2611 else |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2612 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
|
2613 j, |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2614 (char *)sub->list.line[j].start, |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2615 (char *)sub->list.line[j].end); |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2616 fprintf(log_fd, "\n"); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2617 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2618 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2619 |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2620 /* 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
|
2621 static int nfa_match; |
|
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2622 |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2623 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
|
2624 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
|
2625 static void addstate_here __ARGS((nfa_list_T *l, nfa_state_T *state, regsub_T *sub, int *ip)); |
| 4444 | 2626 |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2627 /* |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2628 * 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
|
2629 */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2630 static int |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2631 sub_equal(sub1, sub2) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2632 regsub_T *sub1; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2633 regsub_T *sub2; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2634 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2635 int i; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2636 int todo; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2637 linenr_T s1, e1; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2638 linenr_T s2, e2; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2639 char_u *sp1, *ep1; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2640 char_u *sp2, *ep2; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2641 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2642 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
|
2643 if (REG_MULTI) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2644 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2645 for (i = 0; i < todo; ++i) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2646 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2647 if (i < sub1->in_use) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2648 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2649 s1 = sub1->list.multi[i].start.lnum; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2650 e1 = sub1->list.multi[i].end.lnum; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2651 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2652 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2653 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2654 s1 = 0; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2655 e1 = 0; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2656 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2657 if (i < sub2->in_use) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2658 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2659 s2 = sub2->list.multi[i].start.lnum; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2660 e2 = sub2->list.multi[i].end.lnum; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2661 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2662 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2663 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2664 s2 = 0; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2665 e2 = 0; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2666 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2667 if (s1 != s2 || e1 != e2) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2668 return FALSE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2669 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
|
2670 != sub2->list.multi[i].start.col) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2671 return FALSE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2672 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
|
2673 != sub2->list.multi[i].end.col) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2674 return FALSE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2675 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2676 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2677 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2678 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2679 for (i = 0; i < todo; ++i) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2680 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2681 if (i < sub1->in_use) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2682 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2683 sp1 = sub1->list.line[i].start; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2684 ep1 = sub1->list.line[i].end; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2685 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2686 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2687 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2688 sp1 = NULL; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2689 ep1 = NULL; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2690 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2691 if (i < sub2->in_use) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2692 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2693 sp2 = sub2->list.line[i].start; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2694 ep2 = sub2->list.line[i].end; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2695 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2696 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2697 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2698 sp2 = NULL; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2699 ep2 = NULL; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2700 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2701 if (sp1 != sp2 || ep1 != ep2) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2702 return FALSE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2703 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2704 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2705 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2706 return TRUE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2707 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2708 |
| 4444 | 2709 static void |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2710 addstate(l, state, sub, off) |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2711 nfa_list_T *l; /* runtime state list */ |
| 4444 | 2712 nfa_state_T *state; /* state to update */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2713 regsub_T *sub; /* pointers to subexpressions */ |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2714 int off; /* byte offset, when -1 go to next line */ |
| 4444 | 2715 { |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2716 int subidx; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2717 nfa_thread_T *thread; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2718 lpos_T save_lpos; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2719 int save_in_use; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2720 char_u *save_ptr; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2721 int i; |
| 4444 | 2722 |
| 2723 if (l == NULL || state == NULL) | |
| 2724 return; | |
| 2725 | |
| 2726 switch (state->c) | |
| 2727 { | |
| 2728 case NFA_SPLIT: | |
| 2729 case NFA_NOT: | |
| 2730 case NFA_NOPEN: | |
| 2731 case NFA_NCLOSE: | |
| 2732 case NFA_MCLOSE: | |
| 2733 case NFA_MCLOSE + 1: | |
| 2734 case NFA_MCLOSE + 2: | |
| 2735 case NFA_MCLOSE + 3: | |
| 2736 case NFA_MCLOSE + 4: | |
| 2737 case NFA_MCLOSE + 5: | |
| 2738 case NFA_MCLOSE + 6: | |
| 2739 case NFA_MCLOSE + 7: | |
| 2740 case NFA_MCLOSE + 8: | |
| 2741 case NFA_MCLOSE + 9: | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2742 /* 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
|
2743 * "out1" may be added below. */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2744 break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2745 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2746 case NFA_MOPEN: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2747 case NFA_MOPEN + 1: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2748 case NFA_MOPEN + 2: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2749 case NFA_MOPEN + 3: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2750 case NFA_MOPEN + 4: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2751 case NFA_MOPEN + 5: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2752 case NFA_MOPEN + 6: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2753 case NFA_MOPEN + 7: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2754 case NFA_MOPEN + 8: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2755 case NFA_MOPEN + 9: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2756 /* 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
|
2757 * 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
|
2758 if (state->lastlist == l->id) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2759 return; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2760 state->lastlist = l->id; |
| 4444 | 2761 break; |
| 2762 | |
| 2763 default: | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2764 if (state->lastlist == l->id) |
| 4444 | 2765 { |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2766 /* 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
|
2767 * 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
|
2768 if (!nfa_has_backref) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2769 return; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2770 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2771 /* 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
|
2772 * positions. */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2773 for (i = 0; i < l->n; ++i) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2774 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2775 thread = &l->t[i]; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2776 if (thread->state->id == state->id |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2777 && sub_equal(&thread->sub, sub)) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2778 return; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2779 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2780 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2781 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2782 /* 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
|
2783 * lot) bigger */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2784 if (nfa_has_backref && l->n == l->len) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2785 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2786 int newlen = l->len * 3 / 2 + 50; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2787 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2788 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
|
2789 l->len = newlen; |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2790 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2791 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2792 /* add the state to the list */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2793 state->lastlist = l->id; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2794 thread = &l->t[l->n++]; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2795 thread->state = state; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2796 thread->sub.in_use = sub->in_use; |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2797 if (sub->in_use > 0) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2798 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2799 /* Copy the match start and end positions. */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2800 if (REG_MULTI) |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2801 mch_memmove(&thread->sub.list.multi[0], |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2802 &sub->list.multi[0], |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2803 sizeof(struct multipos) * sub->in_use); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2804 else |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2805 mch_memmove(&thread->sub.list.line[0], |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2806 &sub->list.line[0], |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2807 sizeof(struct linepos) * sub->in_use); |
| 4444 | 2808 } |
| 2809 } | |
| 2810 | |
| 2811 #ifdef ENABLE_LOG | |
| 2812 nfa_set_code(state->c); | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2813 fprintf(log_fd, "> Adding state %d to list. Character %d: %s\n", |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2814 abs(state->id), state->c, code); |
| 4444 | 2815 #endif |
| 2816 switch (state->c) | |
| 2817 { | |
| 2818 case NFA_MATCH: | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2819 nfa_match = TRUE; |
| 4444 | 2820 break; |
| 2821 | |
| 2822 case NFA_SPLIT: | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2823 addstate(l, state->out, sub, off); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2824 addstate(l, state->out1, sub, off); |
| 4444 | 2825 break; |
| 2826 | |
| 2827 #if 0 | |
| 2828 case NFA_END_NEG_RANGE: | |
| 2829 /* Nothing to handle here. nfa_regmatch() will take care of it */ | |
| 2830 break; | |
| 2831 | |
| 2832 case NFA_NOT: | |
| 2833 EMSG(_("E999: (NFA regexp internal error) Should not process NOT node !")); | |
| 2834 #ifdef ENABLE_LOG | |
| 2835 fprintf(f, "\n\n>>> E999: Added state NFA_NOT to a list ... Something went wrong ! Why wasn't it processed already? \n\n"); | |
| 2836 #endif | |
| 2837 break; | |
| 2838 | |
| 2839 case NFA_COMPOSING: | |
| 2840 /* nfa_regmatch() will match all the bytes of this composing char. */ | |
| 2841 break; | |
| 2842 #endif | |
| 2843 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2844 case NFA_SKIP_CHAR: |
| 4444 | 2845 case NFA_NOPEN: |
| 2846 case NFA_NCLOSE: | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2847 addstate(l, state->out, sub, off); |
| 4444 | 2848 break; |
| 2849 | |
| 2850 /* If this state is reached, then a recursive call of nfa_regmatch() | |
| 2851 * succeeded. the next call saves the found submatches in the | |
| 2852 * first state after the "invisible" branch. */ | |
| 2853 #if 0 | |
| 2854 case NFA_END_INVISIBLE: | |
| 2855 break; | |
| 2856 #endif | |
| 2857 | |
| 2858 case NFA_MOPEN + 0: | |
| 2859 case NFA_MOPEN + 1: | |
| 2860 case NFA_MOPEN + 2: | |
| 2861 case NFA_MOPEN + 3: | |
| 2862 case NFA_MOPEN + 4: | |
| 2863 case NFA_MOPEN + 5: | |
| 2864 case NFA_MOPEN + 6: | |
| 2865 case NFA_MOPEN + 7: | |
| 2866 case NFA_MOPEN + 8: | |
| 2867 case NFA_MOPEN + 9: | |
| 2868 case NFA_ZSTART: | |
| 2869 if (state->c == NFA_ZSTART) | |
| 2870 subidx = 0; | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2871 else |
|
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2872 subidx = state->c - NFA_MOPEN; |
| 4444 | 2873 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2874 /* 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
|
2875 * restore it when it was in use. Otherwise fill any gap. */ |
| 4444 | 2876 if (REG_MULTI) |
| 2877 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2878 if (subidx < sub->in_use) |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2879 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2880 save_lpos = sub->list.multi[subidx].start; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2881 save_in_use = -1; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2882 } |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2883 else |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2884 { |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2885 save_in_use = sub->in_use; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2886 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
|
2887 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2888 sub->list.multi[i].start.lnum = -1; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2889 sub->list.multi[i].end.lnum = -1; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2890 } |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2891 sub->in_use = subidx + 1; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2892 } |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2893 if (off == -1) |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2894 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2895 sub->list.multi[subidx].start.lnum = reglnum + 1; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2896 sub->list.multi[subidx].start.col = 0; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2897 } |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2898 else |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2899 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2900 sub->list.multi[subidx].start.lnum = reglnum; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2901 sub->list.multi[subidx].start.col = |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2902 (colnr_T)(reginput - regline + off); |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2903 } |
| 4444 | 2904 } |
| 2905 else | |
| 2906 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2907 if (subidx < sub->in_use) |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2908 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2909 save_ptr = sub->list.line[subidx].start; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2910 save_in_use = -1; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2911 } |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2912 else |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2913 { |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2914 save_in_use = sub->in_use; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2915 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
|
2916 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2917 sub->list.line[i].start = NULL; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2918 sub->list.line[i].end = NULL; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2919 } |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2920 sub->in_use = subidx + 1; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2921 } |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2922 sub->list.line[subidx].start = reginput + off; |
| 4444 | 2923 } |
| 2924 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2925 addstate(l, state->out, sub, off); |
| 4444 | 2926 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2927 if (save_in_use == -1) |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2928 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2929 if (REG_MULTI) |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2930 sub->list.multi[subidx].start = save_lpos; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2931 else |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2932 sub->list.line[subidx].start = save_ptr; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2933 } |
| 4444 | 2934 else |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2935 sub->in_use = save_in_use; |
| 4444 | 2936 break; |
| 2937 | |
| 2938 case NFA_MCLOSE + 0: | |
|
4553
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
2939 if (nfa_has_zend) |
| 4444 | 2940 { |
|
4569
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
2941 /* 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
|
2942 * 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
|
2943 addstate(l, state->out, sub, off); |
| 4444 | 2944 break; |
| 2945 } | |
| 2946 case NFA_MCLOSE + 1: | |
| 2947 case NFA_MCLOSE + 2: | |
| 2948 case NFA_MCLOSE + 3: | |
| 2949 case NFA_MCLOSE + 4: | |
| 2950 case NFA_MCLOSE + 5: | |
| 2951 case NFA_MCLOSE + 6: | |
| 2952 case NFA_MCLOSE + 7: | |
| 2953 case NFA_MCLOSE + 8: | |
| 2954 case NFA_MCLOSE + 9: | |
| 2955 case NFA_ZEND: | |
| 2956 if (state->c == NFA_ZEND) | |
| 2957 subidx = 0; | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2958 else |
|
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2959 subidx = state->c - NFA_MCLOSE; |
| 4444 | 2960 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2961 /* 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
|
2962 * has done that. */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2963 save_in_use = sub->in_use; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2964 if (sub->in_use <= subidx) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2965 sub->in_use = subidx + 1; |
| 4444 | 2966 if (REG_MULTI) |
| 2967 { | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2968 save_lpos = sub->list.multi[subidx].end; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2969 if (off == -1) |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2970 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2971 sub->list.multi[subidx].end.lnum = reglnum + 1; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2972 sub->list.multi[subidx].end.col = 0; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2973 } |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2974 else |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2975 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2976 sub->list.multi[subidx].end.lnum = reglnum; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2977 sub->list.multi[subidx].end.col = |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2978 (colnr_T)(reginput - regline + off); |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2979 } |
| 4444 | 2980 } |
| 2981 else | |
| 2982 { | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2983 save_ptr = sub->list.line[subidx].end; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2984 sub->list.line[subidx].end = reginput + off; |
| 4444 | 2985 } |
| 2986 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2987 addstate(l, state->out, sub, off); |
| 4444 | 2988 |
| 2989 if (REG_MULTI) | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2990 sub->list.multi[subidx].end = save_lpos; |
| 4444 | 2991 else |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2992 sub->list.line[subidx].end = save_ptr; |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2993 sub->in_use = save_in_use; |
| 4444 | 2994 break; |
| 2995 } | |
| 2996 } | |
| 2997 | |
| 2998 /* | |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2999 * 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
|
3000 * 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
|
3001 * 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
|
3002 * matters for alternatives. |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3003 */ |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3004 static void |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3005 addstate_here(l, state, sub, ip) |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3006 nfa_list_T *l; /* runtime state list */ |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3007 nfa_state_T *state; /* state to update */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3008 regsub_T *sub; /* pointers to subexpressions */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3009 int *ip; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3010 { |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3011 int tlen = l->n; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3012 int count; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3013 int i = *ip; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3014 |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3015 /* 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
|
3016 addstate(l, state, sub, 0); |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3017 |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3018 /* 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
|
3019 if (i + 1 == tlen) |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3020 return; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3021 |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3022 /* 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
|
3023 count = l->n - tlen; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3024 if (count == 1) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3025 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3026 /* overwrite the current state */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3027 l->t[i] = l->t[l->n - 1]; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3028 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3029 else if (count > 1) |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3030 { |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3031 /* 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
|
3032 * end to the current position */ |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3033 mch_memmove(&(l->t[i + count]), |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3034 &(l->t[i + 1]), |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3035 sizeof(nfa_thread_T) * (l->n - i - 1)); |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3036 mch_memmove(&(l->t[i]), |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3037 &(l->t[l->n - 1]), |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3038 sizeof(nfa_thread_T) * count); |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3039 } |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3040 --l->n; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3041 *ip = i - 1; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3042 } |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3043 |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3044 /* |
| 4444 | 3045 * Check character class "class" against current character c. |
| 3046 */ | |
| 3047 static int | |
| 3048 check_char_class(class, c) | |
| 3049 int class; | |
| 3050 int c; | |
| 3051 { | |
| 3052 switch (class) | |
| 3053 { | |
| 3054 case NFA_CLASS_ALNUM: | |
| 4464 | 3055 if (c >= 1 && c <= 255 && isalnum(c)) |
| 4444 | 3056 return OK; |
| 3057 break; | |
| 3058 case NFA_CLASS_ALPHA: | |
| 4464 | 3059 if (c >= 1 && c <= 255 && isalpha(c)) |
| 4444 | 3060 return OK; |
| 3061 break; | |
| 3062 case NFA_CLASS_BLANK: | |
| 3063 if (c == ' ' || c == '\t') | |
| 3064 return OK; | |
| 3065 break; | |
| 3066 case NFA_CLASS_CNTRL: | |
| 4464 | 3067 if (c >= 1 && c <= 255 && iscntrl(c)) |
| 4444 | 3068 return OK; |
| 3069 break; | |
| 3070 case NFA_CLASS_DIGIT: | |
| 3071 if (VIM_ISDIGIT(c)) | |
| 3072 return OK; | |
| 3073 break; | |
| 3074 case NFA_CLASS_GRAPH: | |
| 4464 | 3075 if (c >= 1 && c <= 255 && isgraph(c)) |
| 4444 | 3076 return OK; |
| 3077 break; | |
| 3078 case NFA_CLASS_LOWER: | |
| 3079 if (MB_ISLOWER(c)) | |
| 3080 return OK; | |
| 3081 break; | |
| 3082 case NFA_CLASS_PRINT: | |
| 3083 if (vim_isprintc(c)) | |
| 3084 return OK; | |
| 3085 break; | |
| 3086 case NFA_CLASS_PUNCT: | |
| 4464 | 3087 if (c >= 1 && c <= 255 && ispunct(c)) |
| 4444 | 3088 return OK; |
| 3089 break; | |
| 3090 case NFA_CLASS_SPACE: | |
| 3091 if ((c >=9 && c <= 13) || (c == ' ')) | |
| 3092 return OK; | |
| 3093 break; | |
| 3094 case NFA_CLASS_UPPER: | |
| 3095 if (MB_ISUPPER(c)) | |
| 3096 return OK; | |
| 3097 break; | |
| 3098 case NFA_CLASS_XDIGIT: | |
| 3099 if (vim_isxdigit(c)) | |
| 3100 return OK; | |
| 3101 break; | |
| 3102 case NFA_CLASS_TAB: | |
| 3103 if (c == '\t') | |
| 3104 return OK; | |
| 3105 break; | |
| 3106 case NFA_CLASS_RETURN: | |
| 3107 if (c == '\r') | |
| 3108 return OK; | |
| 3109 break; | |
| 3110 case NFA_CLASS_BACKSPACE: | |
| 3111 if (c == '\b') | |
| 3112 return OK; | |
| 3113 break; | |
| 3114 case NFA_CLASS_ESCAPE: | |
| 3115 if (c == '\033') | |
| 3116 return OK; | |
| 3117 break; | |
| 3118 | |
| 3119 default: | |
| 3120 /* should not be here :P */ | |
| 3121 EMSG_RET_FAIL(_("E877: (NFA regexp) Invalid character class ")); | |
| 3122 } | |
| 3123 return FAIL; | |
| 3124 } | |
| 3125 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3126 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
|
3127 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3128 /* |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3129 * Check for a match with subexpression "subidx". |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3130 * return TRUE if it matches. |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3131 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3132 static int |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3133 match_backref(sub, subidx, bytelen) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3134 regsub_T *sub; /* pointers to subexpressions */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3135 int subidx; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3136 int *bytelen; /* out: length of match in bytes */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3137 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3138 int len; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3139 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3140 if (sub->in_use <= subidx) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3141 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3142 retempty: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3143 /* backref was not set, match an empty string */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3144 *bytelen = 0; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3145 return TRUE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3146 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3147 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3148 if (REG_MULTI) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3149 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3150 if (sub->list.multi[subidx].start.lnum < 0 |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3151 || sub->list.multi[subidx].end.lnum < 0) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3152 goto retempty; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3153 /* TODO: line breaks */ |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3154 len = sub->list.multi[subidx].end.col |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3155 - sub->list.multi[subidx].start.col; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3156 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
|
3157 reginput, &len) == 0) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3158 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3159 *bytelen = len; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3160 return TRUE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3161 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3162 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3163 else |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3164 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3165 if (sub->list.line[subidx].start == NULL |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3166 || sub->list.line[subidx].end == NULL) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3167 goto retempty; |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3168 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
|
3169 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
|
3170 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3171 *bytelen = len; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3172 return TRUE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3173 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3174 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3175 return FALSE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3176 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3177 |
| 4444 | 3178 /* |
| 3179 * Set all NFA nodes' list ID equal to -1. | |
| 3180 */ | |
| 3181 static void | |
| 3182 nfa_set_neg_listids(start) | |
| 3183 nfa_state_T *start; | |
| 3184 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3185 if (start != NULL && start->lastlist >= 0) |
| 4444 | 3186 { |
| 3187 start->lastlist = -1; | |
| 3188 nfa_set_neg_listids(start->out); | |
| 3189 nfa_set_neg_listids(start->out1); | |
| 3190 } | |
| 3191 } | |
| 3192 | |
| 3193 /* | |
| 3194 * Set all NFA nodes' list ID equal to 0. | |
| 3195 */ | |
| 3196 static void | |
| 3197 nfa_set_null_listids(start) | |
| 3198 nfa_state_T *start; | |
| 3199 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3200 if (start != NULL && start->lastlist == -1) |
| 4444 | 3201 { |
| 3202 start->lastlist = 0; | |
| 3203 nfa_set_null_listids(start->out); | |
| 3204 nfa_set_null_listids(start->out1); | |
| 3205 } | |
| 3206 } | |
| 3207 | |
| 3208 /* | |
| 3209 * Save list IDs for all NFA states in "list". | |
| 3210 */ | |
| 3211 static void | |
| 3212 nfa_save_listids(start, list) | |
| 3213 nfa_state_T *start; | |
| 3214 int *list; | |
| 3215 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3216 if (start != NULL && start->lastlist != -1) |
| 4444 | 3217 { |
| 3218 list[abs(start->id)] = start->lastlist; | |
| 3219 start->lastlist = -1; | |
| 3220 nfa_save_listids(start->out, list); | |
| 3221 nfa_save_listids(start->out1, list); | |
| 3222 } | |
| 3223 } | |
| 3224 | |
| 3225 /* | |
| 3226 * Restore list IDs from "list" to all NFA states. | |
| 3227 */ | |
| 3228 static void | |
| 3229 nfa_restore_listids(start, list) | |
| 3230 nfa_state_T *start; | |
| 3231 int *list; | |
| 3232 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3233 if (start != NULL && start->lastlist == -1) |
| 4444 | 3234 { |
| 3235 start->lastlist = list[abs(start->id)]; | |
| 3236 nfa_restore_listids(start->out, list); | |
| 3237 nfa_restore_listids(start->out1, list); | |
| 3238 } | |
| 3239 } | |
| 3240 | |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3241 static int |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3242 nfa_re_num_cmp(val, op, pos) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3243 long_u val; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3244 int op; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3245 long_u pos; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3246 { |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3247 if (op == 1) return pos > val; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3248 if (op == 2) return pos < val; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3249 return val == pos; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3250 } |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3251 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3252 static int nfa_regmatch __ARGS((nfa_state_T *start, regsub_T *submatch, regsub_T *m)); |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3253 |
| 4444 | 3254 /* |
| 3255 * Main matching routine. | |
| 3256 * | |
| 3257 * Run NFA to determine whether it matches reginput. | |
| 3258 * | |
| 3259 * Return TRUE if there is a match, FALSE otherwise. | |
| 3260 * Note: Caller must ensure that: start != NULL. | |
| 3261 */ | |
| 3262 static int | |
| 3263 nfa_regmatch(start, submatch, m) | |
| 3264 nfa_state_T *start; | |
| 3265 regsub_T *submatch; | |
| 3266 regsub_T *m; | |
| 3267 { | |
| 3268 int result; | |
| 3269 int size = 0; | |
| 3270 int flag = 0; | |
| 3271 int old_reglnum = -1; | |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3272 int go_to_nextline = FALSE; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3273 nfa_thread_T *t; |
| 4444 | 3274 char_u *old_reginput = NULL; |
| 3275 char_u *old_regline = NULL; | |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3276 nfa_list_T list[3]; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3277 nfa_list_T *listtbl[2][2]; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3278 nfa_list_T *ll; |
| 4444 | 3279 int listid = 1; |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3280 int listidx; |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3281 nfa_list_T *thislist; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3282 nfa_list_T *nextlist; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3283 nfa_list_T *neglist; |
| 4444 | 3284 int *listids = NULL; |
| 4460 | 3285 #ifdef NFA_REGEXP_DEBUG_LOG |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3286 FILE *debug = fopen(NFA_REGEXP_DEBUG_LOG, "a"); |
| 4444 | 3287 |
| 3288 if (debug == NULL) | |
| 3289 { | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3290 EMSG2(_("(NFA) COULD NOT OPEN %s !"), NFA_REGEXP_DEBUG_LOG); |
| 4444 | 3291 return FALSE; |
| 3292 } | |
| 3293 #endif | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
3294 nfa_match = FALSE; |
| 4444 | 3295 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3296 /* Allocate memory for the lists of nodes. */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3297 size = (nstate + 1) * sizeof(nfa_thread_T); |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3298 list[0].t = (nfa_thread_T *)lalloc_clear(size, TRUE); |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3299 list[0].len = nstate + 1; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3300 list[1].t = (nfa_thread_T *)lalloc_clear(size, TRUE); |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3301 list[1].len = nstate + 1; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3302 list[2].t = (nfa_thread_T *)lalloc_clear(size, TRUE); |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3303 list[2].len = nstate + 1; |
| 4444 | 3304 if (list[0].t == NULL || list[1].t == NULL || list[2].t == NULL) |
| 3305 goto theend; | |
| 3306 | |
| 3307 #ifdef ENABLE_LOG | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3308 log_fd = fopen(NFA_REGEXP_RUN_LOG, "a"); |
| 4444 | 3309 if (log_fd != NULL) |
| 3310 { | |
| 3311 fprintf(log_fd, "**********************************\n"); | |
| 3312 nfa_set_code(start->c); | |
| 3313 fprintf(log_fd, " RUNNING nfa_regmatch() starting with state %d, code %s\n", | |
| 3314 abs(start->id), code); | |
| 3315 fprintf(log_fd, "**********************************\n"); | |
| 3316 } | |
| 3317 else | |
| 3318 { | |
| 3319 EMSG(_("Could not open temporary log file for writing, displaying on stderr ... ")); | |
| 3320 log_fd = stderr; | |
| 3321 } | |
| 3322 #endif | |
| 3323 | |
| 3324 thislist = &list[0]; | |
| 3325 thislist->n = 0; | |
| 3326 nextlist = &list[1]; | |
| 3327 nextlist->n = 0; | |
| 3328 neglist = &list[2]; | |
| 3329 neglist->n = 0; | |
| 3330 #ifdef ENABLE_LOG | |
| 3331 fprintf(log_fd, "(---) STARTSTATE\n"); | |
| 3332 #endif | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3333 thislist->id = listid; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3334 addstate(thislist, start, m, 0); |
| 4444 | 3335 |
| 3336 /* There are two cases when the NFA advances: 1. input char matches the | |
| 3337 * NFA node and 2. input char does not match the NFA node, but the next | |
| 3338 * node is NFA_NOT. The following macro calls addstate() according to | |
| 3339 * these rules. It is used A LOT, so use the "listtbl" table for speed */ | |
| 3340 listtbl[0][0] = NULL; | |
| 3341 listtbl[0][1] = neglist; | |
| 3342 listtbl[1][0] = nextlist; | |
| 3343 listtbl[1][1] = NULL; | |
| 3344 #define ADD_POS_NEG_STATE(node) \ | |
| 3345 ll = listtbl[result ? 1 : 0][node->negated]; \ | |
| 3346 if (ll != NULL) \ | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3347 addstate(ll, node->out , &t->sub, clen); |
| 4444 | 3348 |
| 3349 | |
| 3350 /* | |
| 3351 * Run for each character. | |
| 3352 */ | |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3353 for (;;) |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3354 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3355 int curc; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3356 int clen; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3357 |
| 4444 | 3358 #ifdef FEAT_MBYTE |
| 3359 if (has_mbyte) | |
| 3360 { | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3361 curc = (*mb_ptr2char)(reginput); |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3362 clen = (*mb_ptr2len)(reginput); |
| 4444 | 3363 } |
| 3364 else | |
| 3365 #endif | |
| 3366 { | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3367 curc = *reginput; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3368 clen = 1; |
| 4444 | 3369 } |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3370 if (curc == NUL) |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3371 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3372 clen = 0; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3373 go_to_nextline = FALSE; |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3374 } |
| 4444 | 3375 |
| 3376 /* swap lists */ | |
| 3377 thislist = &list[flag]; | |
| 3378 nextlist = &list[flag ^= 1]; | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3379 nextlist->n = 0; /* clear nextlist */ |
| 4444 | 3380 listtbl[1][0] = nextlist; |
| 3381 ++listid; | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3382 thislist->id = listid; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3383 nextlist->id = listid + 1; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3384 neglist->id = listid + 1; |
| 4444 | 3385 |
| 3386 #ifdef ENABLE_LOG | |
| 3387 fprintf(log_fd, "------------------------------------------\n"); | |
| 3388 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
|
3389 fprintf(log_fd, ">>> Advanced one character ... Current char is %c (code %d) \n", curc, (int)curc); |
| 4444 | 3390 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
|
3391 { |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3392 int i; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3393 |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3394 for (i = 0; i < thislist->n; i++) |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3395 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
|
3396 } |
| 4444 | 3397 fprintf(log_fd, "\n"); |
| 3398 #endif | |
| 3399 | |
| 4460 | 3400 #ifdef NFA_REGEXP_DEBUG_LOG |
| 4444 | 3401 fprintf(debug, "\n-------------------\n"); |
| 3402 #endif | |
| 4480 | 3403 /* |
| 3404 * If the state lists are empty we can stop. | |
| 3405 */ | |
| 3406 if (thislist->n == 0 && neglist->n == 0) | |
| 3407 break; | |
| 4444 | 3408 |
| 3409 /* compute nextlist */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3410 for (listidx = 0; listidx < thislist->n || neglist->n > 0; ++listidx) |
| 4444 | 3411 { |
| 3412 if (neglist->n > 0) | |
| 3413 { | |
| 3414 t = &neglist->t[0]; | |
| 4468 | 3415 neglist->n--; |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3416 listidx--; |
| 4444 | 3417 } |
| 3418 else | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3419 t = &thislist->t[listidx]; |
| 4444 | 3420 |
| 4460 | 3421 #ifdef NFA_REGEXP_DEBUG_LOG |
| 4444 | 3422 nfa_set_code(t->state->c); |
| 3423 fprintf(debug, "%s, ", code); | |
| 3424 #endif | |
| 3425 #ifdef ENABLE_LOG | |
| 3426 nfa_set_code(t->state->c); | |
| 3427 fprintf(log_fd, "(%d) %s, code %d ... \n", abs(t->state->id), | |
| 3428 code, (int)t->state->c); | |
| 3429 #endif | |
| 3430 | |
| 3431 /* | |
| 3432 * Handle the possible codes of the current state. | |
| 3433 * The most important is NFA_MATCH. | |
| 3434 */ | |
| 3435 switch (t->state->c) | |
| 3436 { | |
| 3437 case NFA_MATCH: | |
|
4567
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3438 { |
|
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3439 int j; |
|
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3440 |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
3441 nfa_match = TRUE; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3442 submatch->in_use = t->sub.in_use; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3443 if (REG_MULTI) |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3444 for (j = 0; j < submatch->in_use; j++) |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3445 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3446 submatch->list.multi[j].start = |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3447 t->sub.list.multi[j].start; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3448 submatch->list.multi[j].end = t->sub.list.multi[j].end; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3449 } |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3450 else |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3451 for (j = 0; j < submatch->in_use; j++) |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3452 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3453 submatch->list.line[j].start = |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3454 t->sub.list.line[j].start; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3455 submatch->list.line[j].end = t->sub.list.line[j].end; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3456 } |
| 4444 | 3457 #ifdef ENABLE_LOG |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3458 log_subexpr(&t->sub); |
| 4444 | 3459 #endif |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3460 /* 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
|
3461 * 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
|
3462 * 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
|
3463 * correct. */ |
|
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
3464 if (nextlist->n == 0 && neglist->n == 0) |
|
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
3465 clen = 0; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3466 goto nextchar; |
|
4567
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3467 } |
| 4444 | 3468 |
| 3469 case NFA_END_INVISIBLE: | |
| 3470 /* This is only encountered after a NFA_START_INVISIBLE node. | |
| 3471 * They surround a zero-width group, used with "\@=" and "\&". | |
| 3472 * If we got here, it means that the current "invisible" group | |
| 3473 * finished successfully, so return control to the parent | |
| 3474 * nfa_regmatch(). Submatches are stored in *m, and used in | |
| 3475 * the parent call. */ | |
| 3476 if (start->c == NFA_MOPEN + 0) | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3477 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3478 else |
| 3479 { | |
| 3480 *m = t->sub; | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
3481 nfa_match = TRUE; |
| 4444 | 3482 } |
| 3483 break; | |
| 3484 | |
| 3485 case NFA_START_INVISIBLE: | |
| 3486 /* Save global variables, and call nfa_regmatch() to check if | |
| 3487 * the current concat matches at this position. The concat | |
| 3488 * ends with the node NFA_END_INVISIBLE */ | |
| 3489 old_reginput = reginput; | |
| 3490 old_regline = regline; | |
| 3491 old_reglnum = reglnum; | |
| 3492 if (listids == NULL) | |
| 3493 { | |
| 3494 listids = (int *) lalloc(sizeof(int) * nstate, TRUE); | |
| 3495 if (listids == NULL) | |
| 3496 { | |
| 3497 EMSG(_("E878: (NFA) Could not allocate memory for branch traversal!")); | |
| 3498 return 0; | |
| 3499 } | |
| 3500 } | |
| 3501 #ifdef ENABLE_LOG | |
| 3502 if (log_fd != stderr) | |
| 3503 fclose(log_fd); | |
| 3504 log_fd = NULL; | |
| 3505 #endif | |
| 3506 /* Have to clear the listid field of the NFA nodes, so that | |
| 3507 * nfa_regmatch() and addstate() can run properly after | |
| 3508 * recursion. */ | |
| 3509 nfa_save_listids(start, listids); | |
| 3510 nfa_set_null_listids(start); | |
| 3511 result = nfa_regmatch(t->state->out, submatch, m); | |
| 3512 nfa_set_neg_listids(start); | |
| 3513 nfa_restore_listids(start, listids); | |
| 3514 | |
| 3515 #ifdef ENABLE_LOG | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3516 log_fd = fopen(NFA_REGEXP_RUN_LOG, "a"); |
| 4444 | 3517 if (log_fd != NULL) |
| 3518 { | |
| 3519 fprintf(log_fd, "****************************\n"); | |
| 3520 fprintf(log_fd, "FINISHED RUNNING nfa_regmatch() recursively\n"); | |
| 3521 fprintf(log_fd, "MATCH = %s\n", result == TRUE ? "OK" : "FALSE"); | |
| 3522 fprintf(log_fd, "****************************\n"); | |
| 3523 } | |
| 3524 else | |
| 3525 { | |
| 3526 EMSG(_("Could not open temporary log file for writing, displaying on stderr ... ")); | |
| 3527 log_fd = stderr; | |
| 3528 } | |
| 3529 #endif | |
| 3530 if (result == TRUE) | |
| 3531 { | |
|
4567
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3532 int j; |
|
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3533 |
| 4444 | 3534 /* Restore position in input text */ |
| 3535 reginput = old_reginput; | |
| 3536 regline = old_regline; | |
| 3537 reglnum = old_reglnum; | |
| 3538 /* Copy submatch info from the recursive call */ | |
| 3539 if (REG_MULTI) | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3540 for (j = 1; j < m->in_use; j++) |
| 4444 | 3541 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3542 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
|
3543 t->sub.list.multi[j].end = m->list.multi[j].end; |
| 4444 | 3544 } |
| 3545 else | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3546 for (j = 1; j < m->in_use; j++) |
| 4444 | 3547 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3548 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
|
3549 t->sub.list.line[j].end = m->list.line[j].end; |
| 4444 | 3550 } |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3551 t->sub.in_use = m->in_use; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3552 |
| 4444 | 3553 /* t->state->out1 is the corresponding END_INVISIBLE node */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3554 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
|
3555 &listidx); |
| 4444 | 3556 } |
| 3557 else | |
| 3558 { | |
| 3559 /* continue with next input char */ | |
| 3560 reginput = old_reginput; | |
| 3561 } | |
| 3562 break; | |
| 3563 | |
| 3564 case NFA_BOL: | |
| 3565 if (reginput == regline) | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3566 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3567 break; |
| 3568 | |
| 3569 case NFA_EOL: | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3570 if (curc == NUL) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3571 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3572 break; |
| 3573 | |
| 3574 case NFA_BOW: | |
| 3575 { | |
| 3576 int bow = TRUE; | |
| 3577 | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3578 if (curc == NUL) |
| 4444 | 3579 bow = FALSE; |
| 3580 #ifdef FEAT_MBYTE | |
| 3581 else if (has_mbyte) | |
| 3582 { | |
| 3583 int this_class; | |
| 3584 | |
| 3585 /* Get class of current and previous char (if it exists). */ | |
| 4503 | 3586 this_class = mb_get_class_buf(reginput, reg_buf); |
| 4444 | 3587 if (this_class <= 1) |
| 3588 bow = FALSE; | |
| 3589 else if (reg_prev_class() == this_class) | |
| 3590 bow = FALSE; | |
| 3591 } | |
| 3592 #endif | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3593 else if (!vim_iswordc_buf(curc, reg_buf) |
| 4503 | 3594 || (reginput > regline |
| 3595 && vim_iswordc_buf(reginput[-1], reg_buf))) | |
| 4444 | 3596 bow = FALSE; |
| 3597 if (bow) | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3598 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3599 break; |
| 3600 } | |
| 3601 | |
| 3602 case NFA_EOW: | |
| 3603 { | |
| 3604 int eow = TRUE; | |
| 3605 | |
| 3606 if (reginput == regline) | |
| 3607 eow = FALSE; | |
| 3608 #ifdef FEAT_MBYTE | |
| 3609 else if (has_mbyte) | |
| 3610 { | |
| 3611 int this_class, prev_class; | |
| 3612 | |
| 3613 /* Get class of current and previous char (if it exists). */ | |
| 4503 | 3614 this_class = mb_get_class_buf(reginput, reg_buf); |
| 4444 | 3615 prev_class = reg_prev_class(); |
| 3616 if (this_class == prev_class | |
| 3617 || prev_class == 0 || prev_class == 1) | |
| 3618 eow = FALSE; | |
| 3619 } | |
| 3620 #endif | |
| 4503 | 3621 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
|
3622 || (reginput[0] != NUL |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3623 && vim_iswordc_buf(curc, reg_buf))) |
| 4444 | 3624 eow = FALSE; |
| 3625 if (eow) | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3626 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3627 break; |
| 3628 } | |
| 3629 | |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3630 #ifdef FEAT_MBYTE |
| 4444 | 3631 case NFA_COMPOSING: |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3632 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3633 int mc = curc; |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3634 int len = 0; |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3635 nfa_state_T *end; |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3636 nfa_state_T *sta; |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3637 int cchars[MAX_MCO]; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3638 int ccount = 0; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3639 int j; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3640 |
| 4444 | 3641 sta = t->state->out; |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3642 len = 0; |
|
4535
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3643 if (utf_iscomposing(sta->c)) |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3644 { |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3645 /* Only match composing character(s), ignore base |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3646 * character. Used for ".{composing}" and "{composing}" |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3647 * (no preceding character). */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3648 len += mb_char2len(mc); |
|
4535
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3649 } |
|
4551
f0c37f5cf4ea
updated for version 7.3.1023
Bram Moolenaar <bram@vim.org>
parents:
4549
diff
changeset
|
3650 if (ireg_icombine && len == 0) |
| 4444 | 3651 { |
|
4535
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3652 /* If \Z was present, then ignore composing characters. |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3653 * 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
|
3654 /* TODO: How about negated? */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3655 if (len == 0 && sta->c != curc) |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3656 result = FAIL; |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3657 else |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3658 result = OK; |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3659 while (sta->c != NFA_END_COMPOSING) |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3660 sta = sta->out; |
| 4444 | 3661 } |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3662 |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3663 /* Check base character matches first, unless ignored. */ |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3664 else if (len > 0 || mc == sta->c) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3665 { |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3666 if (len == 0) |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3667 { |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3668 len += mb_char2len(mc); |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3669 sta = sta->out; |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3670 } |
| 4444 | 3671 |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3672 /* 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
|
3673 * Get them into cchars[] first. */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3674 while (len < clen) |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3675 { |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3676 mc = mb_ptr2char(reginput + len); |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3677 cchars[ccount++] = mc; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3678 len += mb_char2len(mc); |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3679 if (ccount == MAX_MCO) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3680 break; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3681 } |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3682 |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3683 /* 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
|
3684 * 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
|
3685 * composing chars are matched. */ |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3686 result = OK; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3687 while (sta->c != NFA_END_COMPOSING) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3688 { |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3689 for (j = 0; j < ccount; ++j) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3690 if (cchars[j] == sta->c) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3691 break; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3692 if (j == ccount) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3693 { |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3694 result = FAIL; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3695 break; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3696 } |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3697 sta = sta->out; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3698 } |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3699 } |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3700 else |
|
4525
36ddcf4cecbc
updated for version 7.3.1010
Bram Moolenaar <bram@vim.org>
parents:
4517
diff
changeset
|
3701 result = FAIL; |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3702 |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3703 end = t->state->out1; /* NFA_END_COMPOSING */ |
| 4444 | 3704 ADD_POS_NEG_STATE(end); |
| 3705 break; | |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3706 } |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3707 #endif |
| 4444 | 3708 |
| 3709 case NFA_NEWL: | |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3710 if (curc == NUL && !reg_line_lbr && REG_MULTI |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3711 && reglnum <= reg_maxline) |
| 4444 | 3712 { |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3713 go_to_nextline = TRUE; |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3714 /* 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
|
3715 * at the start of the next line. */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3716 addstate(nextlist, t->state->out, &t->sub, -1); |
| 4444 | 3717 } |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3718 else if (curc == '\n' && reg_line_lbr) |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3719 { |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3720 /* 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
|
3721 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
|
3722 } |
| 4444 | 3723 break; |
| 3724 | |
| 3725 case NFA_CLASS_ALNUM: | |
| 3726 case NFA_CLASS_ALPHA: | |
| 3727 case NFA_CLASS_BLANK: | |
| 3728 case NFA_CLASS_CNTRL: | |
| 3729 case NFA_CLASS_DIGIT: | |
| 3730 case NFA_CLASS_GRAPH: | |
| 3731 case NFA_CLASS_LOWER: | |
| 3732 case NFA_CLASS_PRINT: | |
| 3733 case NFA_CLASS_PUNCT: | |
| 3734 case NFA_CLASS_SPACE: | |
| 3735 case NFA_CLASS_UPPER: | |
| 3736 case NFA_CLASS_XDIGIT: | |
| 3737 case NFA_CLASS_TAB: | |
| 3738 case NFA_CLASS_RETURN: | |
| 3739 case NFA_CLASS_BACKSPACE: | |
| 3740 case NFA_CLASS_ESCAPE: | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3741 result = check_char_class(t->state->c, curc); |
| 4444 | 3742 ADD_POS_NEG_STATE(t->state); |
| 3743 break; | |
| 3744 | |
| 3745 case NFA_END_NEG_RANGE: | |
| 3746 /* This follows a series of negated nodes, like: | |
| 3747 * 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
|
3748 if (curc > 0) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3749 addstate(nextlist, t->state->out, &t->sub, clen); |
| 4444 | 3750 break; |
| 3751 | |
| 3752 case NFA_ANY: | |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3753 /* 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
|
3754 if (curc > 0) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3755 addstate(nextlist, t->state->out, &t->sub, clen); |
| 4444 | 3756 break; |
| 3757 | |
| 3758 /* | |
| 3759 * Character classes like \a for alpha, \d for digit etc. | |
| 3760 */ | |
| 3761 case NFA_IDENT: /* \i */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3762 result = vim_isIDc(curc); |
| 4444 | 3763 ADD_POS_NEG_STATE(t->state); |
| 3764 break; | |
| 3765 | |
| 3766 case NFA_SIDENT: /* \I */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3767 result = !VIM_ISDIGIT(curc) && vim_isIDc(curc); |
| 4444 | 3768 ADD_POS_NEG_STATE(t->state); |
| 3769 break; | |
| 3770 | |
| 3771 case NFA_KWORD: /* \k */ | |
| 4503 | 3772 result = vim_iswordp_buf(reginput, reg_buf); |
| 4444 | 3773 ADD_POS_NEG_STATE(t->state); |
| 3774 break; | |
| 3775 | |
| 3776 case NFA_SKWORD: /* \K */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3777 result = !VIM_ISDIGIT(curc) |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3778 && vim_iswordp_buf(reginput, reg_buf); |
| 4444 | 3779 ADD_POS_NEG_STATE(t->state); |
| 3780 break; | |
| 3781 | |
| 3782 case NFA_FNAME: /* \f */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3783 result = vim_isfilec(curc); |
| 4444 | 3784 ADD_POS_NEG_STATE(t->state); |
| 3785 break; | |
| 3786 | |
| 3787 case NFA_SFNAME: /* \F */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3788 result = !VIM_ISDIGIT(curc) && vim_isfilec(curc); |
| 4444 | 3789 ADD_POS_NEG_STATE(t->state); |
| 3790 break; | |
| 3791 | |
| 3792 case NFA_PRINT: /* \p */ | |
| 4470 | 3793 result = ptr2cells(reginput) == 1; |
| 4444 | 3794 ADD_POS_NEG_STATE(t->state); |
| 3795 break; | |
| 3796 | |
| 3797 case NFA_SPRINT: /* \P */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3798 result = !VIM_ISDIGIT(curc) && ptr2cells(reginput) == 1; |
| 4444 | 3799 ADD_POS_NEG_STATE(t->state); |
| 3800 break; | |
| 3801 | |
| 3802 case NFA_WHITE: /* \s */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3803 result = vim_iswhite(curc); |
| 4444 | 3804 ADD_POS_NEG_STATE(t->state); |
| 3805 break; | |
| 3806 | |
| 3807 case NFA_NWHITE: /* \S */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3808 result = curc != NUL && !vim_iswhite(curc); |
| 4444 | 3809 ADD_POS_NEG_STATE(t->state); |
| 3810 break; | |
| 3811 | |
| 3812 case NFA_DIGIT: /* \d */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3813 result = ri_digit(curc); |
| 4444 | 3814 ADD_POS_NEG_STATE(t->state); |
| 3815 break; | |
| 3816 | |
| 3817 case NFA_NDIGIT: /* \D */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3818 result = curc != NUL && !ri_digit(curc); |
| 4444 | 3819 ADD_POS_NEG_STATE(t->state); |
| 3820 break; | |
| 3821 | |
| 3822 case NFA_HEX: /* \x */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3823 result = ri_hex(curc); |
| 4444 | 3824 ADD_POS_NEG_STATE(t->state); |
| 3825 break; | |
| 3826 | |
| 3827 case NFA_NHEX: /* \X */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3828 result = curc != NUL && !ri_hex(curc); |
| 4444 | 3829 ADD_POS_NEG_STATE(t->state); |
| 3830 break; | |
| 3831 | |
| 3832 case NFA_OCTAL: /* \o */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3833 result = ri_octal(curc); |
| 4444 | 3834 ADD_POS_NEG_STATE(t->state); |
| 3835 break; | |
| 3836 | |
| 3837 case NFA_NOCTAL: /* \O */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3838 result = curc != NUL && !ri_octal(curc); |
| 4444 | 3839 ADD_POS_NEG_STATE(t->state); |
| 3840 break; | |
| 3841 | |
| 3842 case NFA_WORD: /* \w */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3843 result = ri_word(curc); |
| 4444 | 3844 ADD_POS_NEG_STATE(t->state); |
| 3845 break; | |
| 3846 | |
| 3847 case NFA_NWORD: /* \W */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3848 result = curc != NUL && !ri_word(curc); |
| 4444 | 3849 ADD_POS_NEG_STATE(t->state); |
| 3850 break; | |
| 3851 | |
| 3852 case NFA_HEAD: /* \h */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3853 result = ri_head(curc); |
| 4444 | 3854 ADD_POS_NEG_STATE(t->state); |
| 3855 break; | |
| 3856 | |
| 3857 case NFA_NHEAD: /* \H */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3858 result = curc != NUL && !ri_head(curc); |
| 4444 | 3859 ADD_POS_NEG_STATE(t->state); |
| 3860 break; | |
| 3861 | |
| 3862 case NFA_ALPHA: /* \a */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3863 result = ri_alpha(curc); |
| 4444 | 3864 ADD_POS_NEG_STATE(t->state); |
| 3865 break; | |
| 3866 | |
| 3867 case NFA_NALPHA: /* \A */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3868 result = curc != NUL && !ri_alpha(curc); |
| 4444 | 3869 ADD_POS_NEG_STATE(t->state); |
| 3870 break; | |
| 3871 | |
| 3872 case NFA_LOWER: /* \l */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3873 result = ri_lower(curc); |
| 4444 | 3874 ADD_POS_NEG_STATE(t->state); |
| 3875 break; | |
| 3876 | |
| 3877 case NFA_NLOWER: /* \L */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3878 result = curc != NUL && !ri_lower(curc); |
| 4444 | 3879 ADD_POS_NEG_STATE(t->state); |
| 3880 break; | |
| 3881 | |
| 3882 case NFA_UPPER: /* \u */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3883 result = ri_upper(curc); |
| 4444 | 3884 ADD_POS_NEG_STATE(t->state); |
| 3885 break; | |
| 3886 | |
| 3887 case NFA_NUPPER: /* \U */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3888 result = curc != NUL && !ri_upper(curc); |
| 4444 | 3889 ADD_POS_NEG_STATE(t->state); |
| 3890 break; | |
| 3891 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3892 case NFA_BACKREF1: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3893 case NFA_BACKREF2: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3894 case NFA_BACKREF3: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3895 case NFA_BACKREF4: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3896 case NFA_BACKREF5: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3897 case NFA_BACKREF6: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3898 case NFA_BACKREF7: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3899 case NFA_BACKREF8: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3900 case NFA_BACKREF9: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3901 /* \1 .. \9 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3902 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3903 int subidx = t->state->c - NFA_BACKREF1 + 1; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3904 int bytelen; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3905 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3906 result = match_backref(&t->sub, subidx, &bytelen); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3907 if (result) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3908 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3909 if (bytelen == 0) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3910 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3911 /* 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
|
3912 * be used next */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3913 addstate_here(thislist, t->state->out, &t->sub, |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3914 &listidx); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3915 thislist->t[listidx + 1].count = 0; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3916 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3917 else if (bytelen <= clen) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3918 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3919 /* match current character, jump ahead to out of |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3920 * NFA_SKIP */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3921 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
|
3922 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3923 log_subexpr(&nextlist->t[nextlist->n - 1].sub); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3924 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3925 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3926 else |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3927 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3928 /* skip ofer the matched characters, set character |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3929 * count in NFA_SKIP */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3930 addstate(nextlist, t->state->out, &t->sub, bytelen); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3931 nextlist->t[nextlist->n - 1].count = bytelen - clen; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3932 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3933 log_subexpr(&nextlist->t[nextlist->n - 1].sub); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3934 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3935 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3936 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3937 } |
| 4482 | 3938 break; |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3939 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3940 case NFA_SKIP: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3941 /* charater of previous matching \1 .. \9 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3942 if (t->count - clen <= 0) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3943 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3944 /* end of match, go to what follows */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3945 addstate(nextlist, t->state->out, &t->sub, clen); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3946 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3947 log_subexpr(&nextlist->t[nextlist->n - 1].sub); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3948 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3949 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3950 else |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3951 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3952 /* add state again with decremented count */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3953 addstate(nextlist, t->state, &t->sub, 0); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3954 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
|
3955 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3956 log_subexpr(&nextlist->t[nextlist->n - 1].sub); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3957 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3958 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3959 break; |
| 4482 | 3960 |
| 3961 case NFA_SKIP_CHAR: | |
| 3962 case NFA_ZSTART: | |
|
4569
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
3963 case NFA_ZEND: |
| 4482 | 3964 /* TODO: should not happen? */ |
| 3965 break; | |
| 3966 | |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3967 case NFA_LNUM: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3968 case NFA_LNUM_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3969 case NFA_LNUM_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3970 result = (REG_MULTI && |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3971 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
|
3972 (long_u)(reglnum + reg_firstlnum))); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3973 if (result) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3974 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
|
3975 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3976 |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3977 case NFA_COL: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3978 case NFA_COL_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3979 case NFA_COL_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3980 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
|
3981 (long_u)(reginput - regline) + 1); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3982 if (result) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3983 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
|
3984 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3985 |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3986 case NFA_VCOL: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3987 case NFA_VCOL_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3988 case NFA_VCOL_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3989 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
|
3990 (long_u)win_linetabsize( |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3991 reg_win == NULL ? curwin : reg_win, |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3992 regline, (colnr_T)(reginput - regline)) + 1); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3993 if (result) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3994 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
|
3995 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3996 |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3997 case NFA_CURSOR: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3998 result = (reg_win != NULL |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3999 && (reglnum + reg_firstlnum == reg_win->w_cursor.lnum) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4000 && ((colnr_T)(reginput - regline) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4001 == reg_win->w_cursor.col)); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4002 if (result) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4003 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
|
4004 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4005 |
| 4444 | 4006 default: /* regular character */ |
|
4559
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4007 { |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4008 int c = t->state->c; |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4009 |
| 4482 | 4010 /* TODO: put this in #ifdef later */ |
|
4559
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4011 if (c < -256) |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4012 EMSGN("INTERNAL: Negative state char: %ld", c); |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4013 if (is_Magic(c)) |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4014 c = un_Magic(c); |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4015 result = (c == curc); |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4016 |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4017 if (!result && ireg_ic) |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4018 result = MB_TOLOWER(c) == MB_TOLOWER(curc); |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4019 #ifdef FEAT_MBYTE |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4020 /* 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
|
4021 * 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
|
4022 * character uses NFA_COMPOSING above. */ |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4023 if (result && enc_utf8 && !ireg_icombine |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4024 && clen != utf_char2len(curc)) |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4025 result = FALSE; |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4026 #endif |
| 4444 | 4027 ADD_POS_NEG_STATE(t->state); |
| 4028 break; | |
|
4559
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4029 } |
| 4444 | 4030 } |
| 4031 | |
| 4032 } /* for (thislist = thislist; thislist->state; thislist++) */ | |
| 4033 | |
|
4557
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4034 /* 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
|
4035 * start state to the list of states. |
|
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4036 * 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
|
4037 * matters! |
|
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4038 * 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
|
4039 * 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
|
4040 * 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
|
4041 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
|
4042 && reglnum == 0 && clen != 0 |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
4043 && (ireg_maxcol == 0 |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
4044 || (colnr_T)(reginput - regline) < ireg_maxcol)) |
| 4444 | 4045 { |
| 4046 #ifdef ENABLE_LOG | |
| 4047 fprintf(log_fd, "(---) STARTSTATE\n"); | |
| 4048 #endif | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4049 addstate(nextlist, start, m, clen); |
| 4444 | 4050 } |
| 4051 | |
| 4052 #ifdef ENABLE_LOG | |
| 4053 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
|
4054 { |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4055 int i; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4056 |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4057 for (i = 0; i < thislist->n; i++) |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4058 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
|
4059 } |
| 4444 | 4060 fprintf(log_fd, "\n"); |
| 4061 #endif | |
| 4062 | |
| 4063 nextchar: | |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4064 /* 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
|
4065 * finish. */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4066 if (clen != 0) |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4067 reginput += clen; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4068 else if (go_to_nextline) |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4069 reg_nextline(); |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4070 else |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4071 break; |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4072 } |
| 4444 | 4073 |
| 4074 #ifdef ENABLE_LOG | |
| 4075 if (log_fd != stderr) | |
| 4076 fclose(log_fd); | |
| 4077 log_fd = NULL; | |
| 4078 #endif | |
| 4079 | |
| 4080 theend: | |
| 4081 /* Free memory */ | |
| 4082 vim_free(list[0].t); | |
| 4083 vim_free(list[1].t); | |
| 4084 vim_free(list[2].t); | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
4085 vim_free(listids); |
| 4444 | 4086 #undef ADD_POS_NEG_STATE |
| 4460 | 4087 #ifdef NFA_REGEXP_DEBUG_LOG |
| 4444 | 4088 fclose(debug); |
| 4089 #endif | |
| 4090 | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
4091 return nfa_match; |
| 4444 | 4092 } |
| 4093 | |
| 4094 /* | |
| 4095 * Try match of "prog" with at regline["col"]. | |
| 4096 * Returns 0 for failure, number of lines contained in the match otherwise. | |
| 4097 */ | |
| 4098 static long | |
| 4099 nfa_regtry(start, col) | |
| 4100 nfa_state_T *start; | |
| 4101 colnr_T col; | |
| 4102 { | |
| 4103 int i; | |
| 4104 regsub_T sub, m; | |
| 4105 #ifdef ENABLE_LOG | |
| 4106 FILE *f; | |
| 4107 #endif | |
| 4108 | |
| 4109 reginput = regline + col; | |
| 4110 need_clear_subexpr = TRUE; | |
| 4111 | |
| 4112 #ifdef ENABLE_LOG | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
4113 f = fopen(NFA_REGEXP_RUN_LOG, "a"); |
| 4444 | 4114 if (f != NULL) |
| 4115 { | |
| 4116 fprintf(f, "\n\n\n\n\n\n\t\t=======================================================\n"); | |
| 4117 fprintf(f, " =======================================================\n"); | |
| 4118 #ifdef DEBUG | |
| 4119 fprintf(f, "\tRegexp is \"%s\"\n", nfa_regengine.expr); | |
| 4120 #endif | |
| 4121 fprintf(f, "\tInput text is \"%s\" \n", reginput); | |
| 4122 fprintf(f, " =======================================================\n\n\n\n\n\n\n"); | |
|
4533
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
4123 nfa_print_state(f, start); |
| 4444 | 4124 fprintf(f, "\n\n"); |
| 4125 fclose(f); | |
| 4126 } | |
| 4127 else | |
| 4128 EMSG(_("Could not open temporary log file for writing ")); | |
| 4129 #endif | |
| 4130 | |
| 4131 if (REG_MULTI) | |
| 4132 { | |
| 4133 /* Use 0xff to set lnum to -1 */ | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4134 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
|
4135 vim_memset(m.list.multi, 0xff, sizeof(struct multipos) * nfa_nsubexpr); |
| 4444 | 4136 } |
| 4137 else | |
| 4138 { | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4139 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
|
4140 vim_memset(m.list.line, 0, sizeof(struct linepos) * nfa_nsubexpr); |
| 4444 | 4141 } |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
4142 sub.in_use = 0; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
4143 m.in_use = 0; |
| 4444 | 4144 |
| 4145 if (nfa_regmatch(start, &sub, &m) == FALSE) | |
| 4146 return 0; | |
| 4147 | |
| 4148 cleanup_subexpr(); | |
| 4149 if (REG_MULTI) | |
| 4150 { | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
4151 for (i = 0; i < sub.in_use; i++) |
| 4444 | 4152 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4153 reg_startpos[i] = sub.list.multi[i].start; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4154 reg_endpos[i] = sub.list.multi[i].end; |
| 4444 | 4155 } |
| 4156 | |
| 4157 if (reg_startpos[0].lnum < 0) | |
| 4158 { | |
| 4159 reg_startpos[0].lnum = 0; | |
| 4160 reg_startpos[0].col = col; | |
| 4161 } | |
| 4162 if (reg_endpos[0].lnum < 0) | |
| 4163 { | |
|
4569
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
4164 /* pattern has a \ze but it didn't match, use current end */ |
| 4444 | 4165 reg_endpos[0].lnum = reglnum; |
| 4166 reg_endpos[0].col = (int)(reginput - regline); | |
| 4167 } | |
| 4168 else | |
| 4169 /* Use line number of "\ze". */ | |
| 4170 reglnum = reg_endpos[0].lnum; | |
| 4171 } | |
| 4172 else | |
| 4173 { | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
4174 for (i = 0; i < sub.in_use; i++) |
| 4444 | 4175 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4176 reg_startp[i] = sub.list.line[i].start; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4177 reg_endp[i] = sub.list.line[i].end; |
| 4444 | 4178 } |
| 4179 | |
| 4180 if (reg_startp[0] == NULL) | |
| 4181 reg_startp[0] = regline + col; | |
| 4182 if (reg_endp[0] == NULL) | |
| 4183 reg_endp[0] = reginput; | |
| 4184 } | |
| 4185 | |
| 4186 return 1 + reglnum; | |
| 4187 } | |
| 4188 | |
| 4189 /* | |
| 4190 * Match a regexp against a string ("line" points to the string) or multiple | |
| 4191 * lines ("line" is NULL, use reg_getline()). | |
| 4192 * | |
| 4193 * Returns 0 for failure, number of lines contained in the match otherwise. | |
| 4194 */ | |
| 4195 static long | |
| 4196 nfa_regexec_both(line, col) | |
| 4197 char_u *line; | |
| 4198 colnr_T col; /* column to start looking for match */ | |
| 4199 { | |
| 4200 nfa_regprog_T *prog; | |
| 4201 long retval = 0L; | |
| 4202 int i; | |
| 4203 | |
| 4204 if (REG_MULTI) | |
| 4205 { | |
| 4206 prog = (nfa_regprog_T *)reg_mmatch->regprog; | |
| 4207 line = reg_getline((linenr_T)0); /* relative to the cursor */ | |
| 4208 reg_startpos = reg_mmatch->startpos; | |
| 4209 reg_endpos = reg_mmatch->endpos; | |
| 4210 } | |
| 4211 else | |
| 4212 { | |
| 4213 prog = (nfa_regprog_T *)reg_match->regprog; | |
| 4214 reg_startp = reg_match->startp; | |
| 4215 reg_endp = reg_match->endp; | |
| 4216 } | |
| 4217 | |
| 4218 /* Be paranoid... */ | |
| 4219 if (prog == NULL || line == NULL) | |
| 4220 { | |
| 4221 EMSG(_(e_null)); | |
| 4222 goto theend; | |
| 4223 } | |
| 4224 | |
| 4225 /* If the start column is past the maximum column: no need to try. */ | |
| 4226 if (ireg_maxcol > 0 && col >= ireg_maxcol) | |
| 4227 goto theend; | |
| 4228 | |
| 4229 /* If pattern contains "\c" or "\C": overrule value of ireg_ic */ | |
| 4230 if (prog->regflags & RF_ICASE) | |
| 4231 ireg_ic = TRUE; | |
| 4232 else if (prog->regflags & RF_NOICASE) | |
| 4233 ireg_ic = FALSE; | |
| 4234 | |
| 4235 #ifdef FEAT_MBYTE | |
| 4236 /* If pattern contains "\Z" overrule value of ireg_icombine */ | |
| 4237 if (prog->regflags & RF_ICOMBINE) | |
| 4238 ireg_icombine = TRUE; | |
| 4239 #endif | |
| 4240 | |
| 4241 regline = line; | |
| 4242 reglnum = 0; /* relative to line */ | |
| 4243 | |
|
4553
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
4244 nfa_has_zend = prog->has_zend; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
4245 nfa_has_backref = prog->has_backref; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
4246 nfa_nsubexpr = prog->nsubexp; |
|
4553
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
4247 |
| 4444 | 4248 nstate = prog->nstate; |
| 4249 for (i = 0; i < nstate; ++i) | |
| 4250 { | |
| 4251 prog->state[i].id = i; | |
| 4252 prog->state[i].lastlist = 0; | |
| 4253 } | |
| 4254 | |
| 4255 retval = nfa_regtry(prog->start, col); | |
| 4256 | |
| 4257 theend: | |
| 4258 return retval; | |
| 4259 } | |
| 4260 | |
| 4261 /* | |
| 4262 * Compile a regular expression into internal code for the NFA matcher. | |
| 4263 * Returns the program in allocated space. Returns NULL for an error. | |
| 4264 */ | |
| 4265 static regprog_T * | |
| 4266 nfa_regcomp(expr, re_flags) | |
| 4267 char_u *expr; | |
| 4268 int re_flags; | |
| 4269 { | |
|
4541
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4270 nfa_regprog_T *prog = NULL; |
| 4458 | 4271 size_t prog_size; |
| 4444 | 4272 int *postfix; |
| 4273 | |
| 4274 if (expr == NULL) | |
| 4275 return NULL; | |
| 4276 | |
| 4277 #ifdef DEBUG | |
| 4278 nfa_regengine.expr = expr; | |
| 4279 #endif | |
| 4280 | |
| 4281 init_class_tab(); | |
| 4282 | |
| 4283 if (nfa_regcomp_start(expr, re_flags) == FAIL) | |
| 4284 return NULL; | |
| 4285 | |
| 4286 /* 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
|
4287 * (and count its size). */ |
| 4444 | 4288 postfix = re2post(); |
| 4289 if (postfix == NULL) | |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4290 { |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4291 /* TODO: only give this error for debugging? */ |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4292 if (post_ptr >= post_end) |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4293 EMSGN("Internal error: estimated max number of states insufficient: %ld", post_end - post_start); |
| 4444 | 4294 goto fail; /* Cascaded (syntax?) error */ |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4295 } |
| 4444 | 4296 |
| 4297 /* | |
| 4298 * In order to build the NFA, we parse the input regexp twice: | |
| 4299 * 1. first pass to count size (so we can allocate space) | |
| 4300 * 2. second to emit code | |
| 4301 */ | |
| 4302 #ifdef ENABLE_LOG | |
| 4303 { | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
4304 FILE *f = fopen(NFA_REGEXP_RUN_LOG, "a"); |
| 4444 | 4305 |
| 4306 if (f != NULL) | |
| 4307 { | |
| 4308 fprintf(f, "\n*****************************\n\n\n\n\tCompiling regexp \"%s\" ... hold on !\n", expr); | |
| 4309 fclose(f); | |
| 4310 } | |
| 4311 } | |
| 4312 #endif | |
| 4313 | |
| 4314 /* | |
| 4315 * PASS 1 | |
| 4316 * Count number of NFA states in "nstate". Do not build the NFA. | |
| 4317 */ | |
| 4318 post2nfa(postfix, post_ptr, TRUE); | |
|
4541
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4319 |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4320 /* Space for compiled regexp */ |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4321 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
|
4322 prog = (nfa_regprog_T *)lalloc(prog_size, TRUE); |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4323 if (prog == NULL) |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4324 goto fail; |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4325 vim_memset(prog, 0, prog_size); |
| 4444 | 4326 state_ptr = prog->state; |
| 4327 | |
| 4328 /* | |
| 4329 * PASS 2 | |
| 4330 * Build the NFA | |
| 4331 */ | |
| 4332 prog->start = post2nfa(postfix, post_ptr, FALSE); | |
| 4333 if (prog->start == NULL) | |
| 4334 goto fail; | |
| 4335 | |
| 4336 prog->regflags = regflags; | |
| 4337 prog->engine = &nfa_regengine; | |
| 4338 prog->nstate = nstate; | |
|
4553
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
4339 prog->has_zend = nfa_has_zend; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
4340 prog->has_backref = nfa_has_backref; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
4341 prog->nsubexp = regnpar; |
| 4444 | 4342 #ifdef ENABLE_LOG |
| 4343 nfa_postfix_dump(expr, OK); | |
| 4344 nfa_dump(prog); | |
| 4345 #endif | |
| 4346 | |
| 4347 out: | |
| 4348 vim_free(post_start); | |
| 4349 post_start = post_ptr = post_end = NULL; | |
| 4350 state_ptr = NULL; | |
| 4351 return (regprog_T *)prog; | |
| 4352 | |
| 4353 fail: | |
| 4354 vim_free(prog); | |
| 4355 prog = NULL; | |
| 4356 #ifdef ENABLE_LOG | |
| 4357 nfa_postfix_dump(expr, FAIL); | |
| 4358 #endif | |
| 4359 #ifdef DEBUG | |
| 4360 nfa_regengine.expr = NULL; | |
| 4361 #endif | |
| 4362 goto out; | |
| 4363 } | |
| 4364 | |
| 4365 | |
| 4366 /* | |
| 4367 * Match a regexp against a string. | |
| 4368 * "rmp->regprog" is a compiled regexp as returned by nfa_regcomp(). | |
| 4369 * Uses curbuf for line count and 'iskeyword'. | |
| 4370 * | |
| 4371 * Return TRUE if there is a match, FALSE if not. | |
| 4372 */ | |
| 4373 static int | |
| 4374 nfa_regexec(rmp, line, col) | |
| 4375 regmatch_T *rmp; | |
| 4376 char_u *line; /* string to match against */ | |
| 4377 colnr_T col; /* column to start looking for match */ | |
| 4378 { | |
| 4379 reg_match = rmp; | |
| 4380 reg_mmatch = NULL; | |
| 4381 reg_maxline = 0; | |
| 4382 reg_line_lbr = FALSE; | |
| 4383 reg_buf = curbuf; | |
| 4384 reg_win = NULL; | |
| 4385 ireg_ic = rmp->rm_ic; | |
| 4386 #ifdef FEAT_MBYTE | |
| 4387 ireg_icombine = FALSE; | |
| 4388 #endif | |
| 4389 ireg_maxcol = 0; | |
| 4390 return (nfa_regexec_both(line, col) != 0); | |
| 4391 } | |
| 4392 | |
| 4393 #if defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) \ | |
| 4394 || defined(FIND_REPLACE_DIALOG) || defined(PROTO) | |
| 4395 | |
| 4396 static int nfa_regexec_nl __ARGS((regmatch_T *rmp, char_u *line, colnr_T col)); | |
| 4397 | |
| 4398 /* | |
| 4399 * Like nfa_regexec(), but consider a "\n" in "line" to be a line break. | |
| 4400 */ | |
| 4401 static int | |
| 4402 nfa_regexec_nl(rmp, line, col) | |
| 4403 regmatch_T *rmp; | |
| 4404 char_u *line; /* string to match against */ | |
| 4405 colnr_T col; /* column to start looking for match */ | |
| 4406 { | |
| 4407 reg_match = rmp; | |
| 4408 reg_mmatch = NULL; | |
| 4409 reg_maxline = 0; | |
| 4410 reg_line_lbr = TRUE; | |
| 4411 reg_buf = curbuf; | |
| 4412 reg_win = NULL; | |
| 4413 ireg_ic = rmp->rm_ic; | |
| 4414 #ifdef FEAT_MBYTE | |
| 4415 ireg_icombine = FALSE; | |
| 4416 #endif | |
| 4417 ireg_maxcol = 0; | |
| 4418 return (nfa_regexec_both(line, col) != 0); | |
| 4419 } | |
| 4420 #endif | |
| 4421 | |
| 4422 | |
| 4423 /* | |
| 4424 * Match a regexp against multiple lines. | |
| 4425 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
| 4426 * Uses curbuf for line count and 'iskeyword'. | |
| 4427 * | |
| 4428 * Return zero if there is no match. Return number of lines contained in the | |
| 4429 * match otherwise. | |
| 4430 * | |
| 4431 * Note: the body is the same as bt_regexec() except for nfa_regexec_both() | |
| 4432 * | |
| 4433 * ! Also NOTE : match may actually be in another line. e.g.: | |
| 4434 * when r.e. is \nc, cursor is at 'a' and the text buffer looks like | |
| 4435 * | |
| 4436 * +-------------------------+ | |
| 4437 * |a | | |
| 4438 * |b | | |
| 4439 * |c | | |
| 4440 * | | | |
| 4441 * +-------------------------+ | |
| 4442 * | |
| 4443 * then nfa_regexec_multi() returns 3. while the original | |
| 4444 * vim_regexec_multi() returns 0 and a second call at line 2 will return 2. | |
| 4445 * | |
| 4446 * FIXME if this behavior is not compatible. | |
| 4447 */ | |
| 4448 static long | |
| 4449 nfa_regexec_multi(rmp, win, buf, lnum, col, tm) | |
| 4450 regmmatch_T *rmp; | |
| 4451 win_T *win; /* window in which to search or NULL */ | |
| 4452 buf_T *buf; /* buffer in which to search */ | |
| 4453 linenr_T lnum; /* nr of line to start looking for match */ | |
| 4454 colnr_T col; /* column to start looking for match */ | |
| 4455 proftime_T *tm UNUSED; /* timeout limit or NULL */ | |
| 4456 { | |
| 4457 reg_match = NULL; | |
| 4458 reg_mmatch = rmp; | |
| 4459 reg_buf = buf; | |
| 4460 reg_win = win; | |
| 4461 reg_firstlnum = lnum; | |
| 4462 reg_maxline = reg_buf->b_ml.ml_line_count - lnum; | |
| 4463 reg_line_lbr = FALSE; | |
| 4464 ireg_ic = rmp->rmm_ic; | |
| 4465 #ifdef FEAT_MBYTE | |
| 4466 ireg_icombine = FALSE; | |
| 4467 #endif | |
| 4468 ireg_maxcol = rmp->rmm_maxcol; | |
| 4469 | |
| 4503 | 4470 return nfa_regexec_both(NULL, col); |
| 4444 | 4471 } |
| 4472 | |
| 4473 #ifdef DEBUG | |
| 4474 # undef ENABLE_LOG | |
| 4475 #endif |