Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* regcomp.c |
2 | */ | |
3 | ||
4 | /* | |
5 | * "A fair jaw-cracker dwarf-language must be." --Samwise Gamgee | |
6 | */ | |
7 | ||
a687059c LW |
8 | /* NOTE: this is derived from Henry Spencer's regexp code, and should not |
9 | * confused with the original package (see point 3 below). Thanks, Henry! | |
10 | */ | |
11 | ||
12 | /* Additional note: this code is very heavily munged from Henry's version | |
13 | * in places. In some spots I've traded clarity for efficiency, so don't | |
14 | * blame Henry for some of the lack of readability. | |
15 | */ | |
16 | ||
e50aee73 AD |
17 | /* The names of the functions have been changed from regcomp and |
18 | * regexec to pregcomp and pregexec in order to avoid conflicts | |
19 | * with the POSIX routines of the same names. | |
20 | */ | |
21 | ||
b9d5759e AD |
22 | #ifdef PERL_EXT_RE_BUILD |
23 | /* need to replace pregcomp et al, so enable that */ | |
24 | # ifndef PERL_IN_XSUB_RE | |
25 | # define PERL_IN_XSUB_RE | |
26 | # endif | |
27 | /* need access to debugger hooks */ | |
cad2e5aa | 28 | # if defined(PERL_EXT_RE_DEBUG) && !defined(DEBUGGING) |
b9d5759e AD |
29 | # define DEBUGGING |
30 | # endif | |
31 | #endif | |
32 | ||
33 | #ifdef PERL_IN_XSUB_RE | |
d06ea78c | 34 | /* We *really* need to overwrite these symbols: */ |
56953603 IZ |
35 | # define Perl_pregcomp my_regcomp |
36 | # define Perl_regdump my_regdump | |
37 | # define Perl_regprop my_regprop | |
d06ea78c | 38 | # define Perl_pregfree my_regfree |
cad2e5aa JH |
39 | # define Perl_re_intuit_string my_re_intuit_string |
40 | /* *These* symbols are masked to allow static link. */ | |
d06ea78c | 41 | # define Perl_regnext my_regnext |
f0b8d043 | 42 | # define Perl_save_re_context my_save_re_context |
b81d288d | 43 | # define Perl_reginitcolors my_reginitcolors |
c5be433b GS |
44 | |
45 | # define PERL_NO_GET_CONTEXT | |
b81d288d | 46 | #endif |
56953603 | 47 | |
f0fcb552 | 48 | /*SUPPRESS 112*/ |
a687059c | 49 | /* |
e50aee73 | 50 | * pregcomp and pregexec -- regsub and regerror are not used in perl |
a687059c LW |
51 | * |
52 | * Copyright (c) 1986 by University of Toronto. | |
53 | * Written by Henry Spencer. Not derived from licensed software. | |
54 | * | |
55 | * Permission is granted to anyone to use this software for any | |
56 | * purpose on any computer system, and to redistribute it freely, | |
57 | * subject to the following restrictions: | |
58 | * | |
59 | * 1. The author is not responsible for the consequences of use of | |
60 | * this software, no matter how awful, even if they arise | |
61 | * from defects in it. | |
62 | * | |
63 | * 2. The origin of this software must not be misrepresented, either | |
64 | * by explicit claim or by omission. | |
65 | * | |
66 | * 3. Altered versions must be plainly marked as such, and must not | |
67 | * be misrepresented as being the original software. | |
68 | * | |
69 | * | |
70 | **** Alterations to Henry's code are... | |
71 | **** | |
bc89e66f | 72 | **** Copyright (c) 1991-2001, Larry Wall |
a687059c | 73 | **** |
9ef589d8 LW |
74 | **** You may distribute under the terms of either the GNU General Public |
75 | **** License or the Artistic License, as specified in the README file. | |
76 | ||
a687059c LW |
77 | * |
78 | * Beware that some of this code is subtly aware of the way operator | |
79 | * precedence is structured in regular expressions. Serious changes in | |
80 | * regular-expression syntax might require a total rethink. | |
81 | */ | |
82 | #include "EXTERN.h" | |
864dbfa3 | 83 | #define PERL_IN_REGCOMP_C |
a687059c | 84 | #include "perl.h" |
d06ea78c | 85 | |
c5be433b GS |
86 | #ifdef PERL_IN_XSUB_RE |
87 | # if defined(PERL_CAPI) || defined(PERL_OBJECT) | |
88 | # include "XSUB.h" | |
89 | # endif | |
90 | #else | |
d06ea78c GS |
91 | # include "INTERN.h" |
92 | #endif | |
c277df42 IZ |
93 | |
94 | #define REG_COMP_C | |
a687059c LW |
95 | #include "regcomp.h" |
96 | ||
d4cce5f1 | 97 | #ifdef op |
11343788 | 98 | #undef op |
d4cce5f1 | 99 | #endif /* op */ |
11343788 | 100 | |
fe14fcc3 LW |
101 | #ifdef MSDOS |
102 | # if defined(BUGGY_MSC6) | |
103 | /* MSC 6.00A breaks on op/regexp.t test 85 unless we turn this off */ | |
104 | # pragma optimize("a",off) | |
105 | /* But MSC 6.00A is happy with 'w', for aliases only across function calls*/ | |
106 | # pragma optimize("w",on ) | |
107 | # endif /* BUGGY_MSC6 */ | |
108 | #endif /* MSDOS */ | |
109 | ||
a687059c LW |
110 | #ifndef STATIC |
111 | #define STATIC static | |
112 | #endif | |
113 | ||
830247a4 IZ |
114 | typedef struct RExC_state_t { |
115 | U16 flags16; /* are we folding, multilining? */ | |
116 | char *precomp; /* uncompiled string. */ | |
117 | regexp *rx; | |
118 | char *end; /* End of input for compile */ | |
119 | char *parse; /* Input-scan pointer. */ | |
120 | I32 whilem_seen; /* number of WHILEM in this expr */ | |
ffc61ed2 | 121 | regnode *emit; /* Code-emit pointer; ®dummy = don't = compiling */ |
830247a4 IZ |
122 | I32 naughty; /* How bad is this pattern? */ |
123 | I32 sawback; /* Did we see \1, ...? */ | |
124 | U32 seen; | |
125 | I32 size; /* Code size. */ | |
126 | I32 npar; /* () count. */ | |
127 | I32 extralen; | |
128 | I32 seen_zerolen; | |
129 | I32 seen_evals; | |
1aa99e6b | 130 | I32 utf8; |
830247a4 IZ |
131 | #if ADD_TO_REGEXEC |
132 | char *starttry; /* -Dr: where regtry was called. */ | |
133 | #define RExC_starttry (pRExC_state->starttry) | |
134 | #endif | |
135 | } RExC_state_t; | |
136 | ||
137 | #define RExC_flags16 (pRExC_state->flags16) | |
138 | #define RExC_precomp (pRExC_state->precomp) | |
139 | #define RExC_rx (pRExC_state->rx) | |
140 | #define RExC_end (pRExC_state->end) | |
141 | #define RExC_parse (pRExC_state->parse) | |
142 | #define RExC_whilem_seen (pRExC_state->whilem_seen) | |
143 | #define RExC_emit (pRExC_state->emit) | |
144 | #define RExC_naughty (pRExC_state->naughty) | |
145 | #define RExC_sawback (pRExC_state->sawback) | |
146 | #define RExC_seen (pRExC_state->seen) | |
147 | #define RExC_size (pRExC_state->size) | |
148 | #define RExC_npar (pRExC_state->npar) | |
149 | #define RExC_extralen (pRExC_state->extralen) | |
150 | #define RExC_seen_zerolen (pRExC_state->seen_zerolen) | |
151 | #define RExC_seen_evals (pRExC_state->seen_evals) | |
1aa99e6b | 152 | #define RExC_utf8 (pRExC_state->utf8) |
830247a4 | 153 | |
a687059c LW |
154 | #define ISMULT1(c) ((c) == '*' || (c) == '+' || (c) == '?') |
155 | #define ISMULT2(s) ((*s) == '*' || (*s) == '+' || (*s) == '?' || \ | |
156 | ((*s) == '{' && regcurly(s))) | |
a687059c | 157 | |
35c8bce7 LW |
158 | #ifdef SPSTART |
159 | #undef SPSTART /* dratted cpp namespace... */ | |
160 | #endif | |
a687059c LW |
161 | /* |
162 | * Flags to be passed up and down. | |
163 | */ | |
a687059c | 164 | #define WORST 0 /* Worst case. */ |
821b33a5 | 165 | #define HASWIDTH 0x1 /* Known to match non-null strings. */ |
a0d0e21e LW |
166 | #define SIMPLE 0x2 /* Simple enough to be STAR/PLUS operand. */ |
167 | #define SPSTART 0x4 /* Starts with * or +. */ | |
168 | #define TRYAGAIN 0x8 /* Weeded out a declaration. */ | |
a687059c | 169 | |
2c2d71f5 JH |
170 | /* Length of a variant. */ |
171 | ||
172 | typedef struct scan_data_t { | |
173 | I32 len_min; | |
174 | I32 len_delta; | |
175 | I32 pos_min; | |
176 | I32 pos_delta; | |
177 | SV *last_found; | |
178 | I32 last_end; /* min value, <0 unless valid. */ | |
179 | I32 last_start_min; | |
180 | I32 last_start_max; | |
181 | SV **longest; /* Either &l_fixed, or &l_float. */ | |
182 | SV *longest_fixed; | |
183 | I32 offset_fixed; | |
184 | SV *longest_float; | |
185 | I32 offset_float_min; | |
186 | I32 offset_float_max; | |
187 | I32 flags; | |
188 | I32 whilem_c; | |
cb434fcc | 189 | I32 *last_closep; |
653099ff | 190 | struct regnode_charclass_class *start_class; |
2c2d71f5 JH |
191 | } scan_data_t; |
192 | ||
a687059c | 193 | /* |
e50aee73 | 194 | * Forward declarations for pregcomp()'s friends. |
a687059c | 195 | */ |
a0d0e21e | 196 | |
b81d288d | 197 | static scan_data_t zero_scan_data = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
cb434fcc | 198 | 0, 0, 0, 0, 0, 0}; |
c277df42 IZ |
199 | |
200 | #define SF_BEFORE_EOL (SF_BEFORE_SEOL|SF_BEFORE_MEOL) | |
201 | #define SF_BEFORE_SEOL 0x1 | |
202 | #define SF_BEFORE_MEOL 0x2 | |
203 | #define SF_FIX_BEFORE_EOL (SF_FIX_BEFORE_SEOL|SF_FIX_BEFORE_MEOL) | |
204 | #define SF_FL_BEFORE_EOL (SF_FL_BEFORE_SEOL|SF_FL_BEFORE_MEOL) | |
205 | ||
09b7f37c CB |
206 | #ifdef NO_UNARY_PLUS |
207 | # define SF_FIX_SHIFT_EOL (0+2) | |
208 | # define SF_FL_SHIFT_EOL (0+4) | |
209 | #else | |
210 | # define SF_FIX_SHIFT_EOL (+2) | |
211 | # define SF_FL_SHIFT_EOL (+4) | |
212 | #endif | |
c277df42 IZ |
213 | |
214 | #define SF_FIX_BEFORE_SEOL (SF_BEFORE_SEOL << SF_FIX_SHIFT_EOL) | |
215 | #define SF_FIX_BEFORE_MEOL (SF_BEFORE_MEOL << SF_FIX_SHIFT_EOL) | |
216 | ||
217 | #define SF_FL_BEFORE_SEOL (SF_BEFORE_SEOL << SF_FL_SHIFT_EOL) | |
218 | #define SF_FL_BEFORE_MEOL (SF_BEFORE_MEOL << SF_FL_SHIFT_EOL) /* 0x20 */ | |
219 | #define SF_IS_INF 0x40 | |
220 | #define SF_HAS_PAR 0x80 | |
221 | #define SF_IN_PAR 0x100 | |
222 | #define SF_HAS_EVAL 0x200 | |
4bfe0158 | 223 | #define SCF_DO_SUBSTR 0x400 |
653099ff GS |
224 | #define SCF_DO_STCLASS_AND 0x0800 |
225 | #define SCF_DO_STCLASS_OR 0x1000 | |
226 | #define SCF_DO_STCLASS (SCF_DO_STCLASS_AND|SCF_DO_STCLASS_OR) | |
e1901655 | 227 | #define SCF_WHILEM_VISITED_POS 0x2000 |
c277df42 | 228 | |
1aa99e6b | 229 | #define UTF RExC_utf8 |
830247a4 IZ |
230 | #define LOC (RExC_flags16 & PMf_LOCALE) |
231 | #define FOLD (RExC_flags16 & PMf_FOLD) | |
a0ed51b3 | 232 | |
ffc61ed2 | 233 | #define OOB_UNICODE 12345678 |
93733859 | 234 | #define OOB_NAMEDCLASS -1 |
b8c5462f | 235 | |
a0ed51b3 LW |
236 | #define CHR_SVLEN(sv) (UTF ? sv_len_utf8(sv) : SvCUR(sv)) |
237 | #define CHR_DIST(a,b) (UTF ? utf8_distance(a,b) : a - b) | |
238 | ||
8615cb43 | 239 | |
b45f050a JF |
240 | /* length of regex to show in messages that don't mark a position within */ |
241 | #define RegexLengthToShowInErrorMessages 127 | |
242 | ||
243 | /* | |
244 | * If MARKER[12] are adjusted, be sure to adjust the constants at the top | |
245 | * of t/op/regmesg.t, the tests in t/op/re_tests, and those in | |
246 | * op/pragma/warn/regcomp. | |
247 | */ | |
79eeca27 JH |
248 | #define MARKER1 "HERE" /* marker as it appears in the description */ |
249 | #define MARKER2 " << HERE " /* marker as it appears within the regex */ | |
b81d288d | 250 | |
79eeca27 | 251 | #define REPORT_LOCATION " before " MARKER1 " mark in regex m/%.*s" MARKER2 "%s/" |
b45f050a JF |
252 | |
253 | /* | |
254 | * Calls SAVEDESTRUCTOR_X if needed, then calls Perl_croak with the given | |
255 | * arg. Show regex, up to a maximum length. If it's too long, chop and add | |
256 | * "...". | |
257 | */ | |
a4eb266f | 258 | #define FAIL(msg) \ |
8615cb43 | 259 | STMT_START { \ |
a4eb266f | 260 | char *ellipses = ""; \ |
830247a4 | 261 | unsigned len = strlen(RExC_precomp); \ |
b45f050a | 262 | \ |
8615cb43 | 263 | if (!SIZE_ONLY) \ |
830247a4 | 264 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ |
b45f050a JF |
265 | \ |
266 | if (len > RegexLengthToShowInErrorMessages) { \ | |
267 | /* chop 10 shorter than the max, to ensure meaning of "..." */ \ | |
268 | len = RegexLengthToShowInErrorMessages - 10; \ | |
a4eb266f | 269 | ellipses = "..."; \ |
b45f050a JF |
270 | } \ |
271 | Perl_croak(aTHX_ "%s in regex m/%.*s%s/", \ | |
830247a4 | 272 | msg, (int)len, RExC_precomp, ellipses); \ |
8615cb43 JF |
273 | } STMT_END |
274 | ||
b45f050a JF |
275 | /* |
276 | * Calls SAVEDESTRUCTOR_X if needed, then calls Perl_croak with the given | |
277 | * args. Show regex, up to a maximum length. If it's too long, chop and add | |
278 | * "...". | |
279 | */ | |
a4eb266f | 280 | #define FAIL2(pat,msg) \ |
8615cb43 | 281 | STMT_START { \ |
a4eb266f | 282 | char *ellipses = ""; \ |
830247a4 | 283 | unsigned len = strlen(RExC_precomp); \ |
b45f050a | 284 | \ |
8615cb43 | 285 | if (!SIZE_ONLY) \ |
830247a4 | 286 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ |
8615cb43 | 287 | \ |
b45f050a JF |
288 | if (len > RegexLengthToShowInErrorMessages) { \ |
289 | /* chop 10 shorter than the max, to ensure meaning of "..." */ \ | |
290 | len = RegexLengthToShowInErrorMessages - 10; \ | |
a4eb266f | 291 | ellipses = "..."; \ |
b45f050a JF |
292 | } \ |
293 | S_re_croak2(aTHX_ pat, " in regex m/%.*s%s/", \ | |
830247a4 | 294 | msg, (int)len, RExC_precomp, ellipses); \ |
b45f050a JF |
295 | } STMT_END |
296 | ||
297 | ||
298 | /* | |
299 | * Simple_vFAIL -- like FAIL, but marks the current location in the scan | |
300 | */ | |
301 | #define Simple_vFAIL(m) \ | |
302 | STMT_START { \ | |
830247a4 | 303 | unsigned offset = strlen(RExC_precomp)-(RExC_end-RExC_parse); \ |
b45f050a JF |
304 | \ |
305 | Perl_croak(aTHX_ "%s" REPORT_LOCATION, \ | |
830247a4 | 306 | m, (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
307 | } STMT_END |
308 | ||
309 | /* | |
310 | * Calls SAVEDESTRUCTOR_X if needed, then Simple_vFAIL() | |
311 | */ | |
312 | #define vFAIL(m) \ | |
313 | STMT_START { \ | |
314 | if (!SIZE_ONLY) \ | |
830247a4 | 315 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ |
b45f050a JF |
316 | Simple_vFAIL(m); \ |
317 | } STMT_END | |
318 | ||
319 | /* | |
320 | * Like Simple_vFAIL(), but accepts two arguments. | |
321 | */ | |
322 | #define Simple_vFAIL2(m,a1) \ | |
323 | STMT_START { \ | |
830247a4 | 324 | unsigned offset = strlen(RExC_precomp)-(RExC_end-RExC_parse); \ |
b45f050a JF |
325 | \ |
326 | S_re_croak2(aTHX_ m, REPORT_LOCATION, a1, \ | |
830247a4 | 327 | (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
328 | } STMT_END |
329 | ||
330 | /* | |
331 | * Calls SAVEDESTRUCTOR_X if needed, then Simple_vFAIL2(). | |
332 | */ | |
333 | #define vFAIL2(m,a1) \ | |
334 | STMT_START { \ | |
335 | if (!SIZE_ONLY) \ | |
830247a4 | 336 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ |
b45f050a JF |
337 | Simple_vFAIL2(m, a1); \ |
338 | } STMT_END | |
339 | ||
340 | ||
341 | /* | |
342 | * Like Simple_vFAIL(), but accepts three arguments. | |
343 | */ | |
344 | #define Simple_vFAIL3(m, a1, a2) \ | |
345 | STMT_START { \ | |
830247a4 | 346 | unsigned offset = strlen(RExC_precomp)-(RExC_end-RExC_parse); \ |
b45f050a JF |
347 | \ |
348 | S_re_croak2(aTHX_ m, REPORT_LOCATION, a1, a2, \ | |
830247a4 | 349 | (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
350 | } STMT_END |
351 | ||
352 | /* | |
353 | * Calls SAVEDESTRUCTOR_X if needed, then Simple_vFAIL3(). | |
354 | */ | |
355 | #define vFAIL3(m,a1,a2) \ | |
356 | STMT_START { \ | |
357 | if (!SIZE_ONLY) \ | |
830247a4 | 358 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ |
b45f050a JF |
359 | Simple_vFAIL3(m, a1, a2); \ |
360 | } STMT_END | |
361 | ||
362 | /* | |
363 | * Like Simple_vFAIL(), but accepts four arguments. | |
364 | */ | |
365 | #define Simple_vFAIL4(m, a1, a2, a3) \ | |
366 | STMT_START { \ | |
830247a4 | 367 | unsigned offset = strlen(RExC_precomp)-(RExC_end-RExC_parse); \ |
b45f050a JF |
368 | \ |
369 | S_re_croak2(aTHX_ m, REPORT_LOCATION, a1, a2, a3,\ | |
830247a4 | 370 | (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
371 | } STMT_END |
372 | ||
373 | /* | |
374 | * Like Simple_vFAIL(), but accepts five arguments. | |
375 | */ | |
376 | #define Simple_vFAIL5(m, a1, a2, a3, a4) \ | |
377 | STMT_START { \ | |
830247a4 | 378 | unsigned offset = strlen(RExC_precomp)-(RExC_end-RExC_parse); \ |
b45f050a | 379 | S_re_croak2(aTHX_ m, REPORT_LOCATION, a1, a2, a3, a4,\ |
830247a4 | 380 | (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
381 | } STMT_END |
382 | ||
383 | ||
384 | #define vWARN(loc,m) \ | |
385 | STMT_START { \ | |
830247a4 | 386 | unsigned offset = strlen(RExC_precomp)-(RExC_end-(loc)); \ |
b45f050a | 387 | Perl_warner(aTHX_ WARN_REGEXP, "%s" REPORT_LOCATION,\ |
830247a4 | 388 | m, (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
389 | } STMT_END \ |
390 | ||
391 | ||
392 | #define vWARN2(loc, m, a1) \ | |
393 | STMT_START { \ | |
830247a4 | 394 | unsigned offset = strlen(RExC_precomp)-(RExC_end-(loc)); \ |
b45f050a JF |
395 | Perl_warner(aTHX_ WARN_REGEXP, m REPORT_LOCATION,\ |
396 | a1, \ | |
830247a4 | 397 | (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
398 | } STMT_END |
399 | ||
400 | #define vWARN3(loc, m, a1, a2) \ | |
401 | STMT_START { \ | |
830247a4 | 402 | unsigned offset = strlen(RExC_precomp) - (RExC_end - (loc)); \ |
b45f050a JF |
403 | Perl_warner(aTHX_ WARN_REGEXP, m REPORT_LOCATION, \ |
404 | a1, a2, \ | |
830247a4 | 405 | (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
406 | } STMT_END |
407 | ||
408 | #define vWARN4(loc, m, a1, a2, a3) \ | |
409 | STMT_START { \ | |
830247a4 | 410 | unsigned offset = strlen(RExC_precomp)-(RExC_end-(loc)); \ |
b45f050a JF |
411 | Perl_warner(aTHX_ WARN_REGEXP, m REPORT_LOCATION,\ |
412 | a1, a2, a3, \ | |
830247a4 | 413 | (int)offset, RExC_precomp, RExC_precomp + offset); \ |
8615cb43 JF |
414 | } STMT_END |
415 | ||
416 | ||
cd439c50 IZ |
417 | /* Allow for side effects in s */ |
418 | #define REGC(c,s) STMT_START { if (!SIZE_ONLY) *(s) = (c); else (s);} STMT_END | |
419 | ||
51371543 | 420 | static void clear_re(pTHXo_ void *r); |
4327152a | 421 | |
653099ff GS |
422 | /* Mark that we cannot extend a found fixed substring at this point. |
423 | Updata the longest found anchored substring and the longest found | |
424 | floating substrings if needed. */ | |
425 | ||
4327152a | 426 | STATIC void |
830247a4 | 427 | S_scan_commit(pTHX_ RExC_state_t *pRExC_state, scan_data_t *data) |
c277df42 | 428 | { |
a0ed51b3 LW |
429 | STRLEN l = CHR_SVLEN(data->last_found); |
430 | STRLEN old_l = CHR_SVLEN(*data->longest); | |
b81d288d | 431 | |
c277df42 IZ |
432 | if ((l >= old_l) && ((l > old_l) || (data->flags & SF_BEFORE_EOL))) { |
433 | sv_setsv(*data->longest, data->last_found); | |
434 | if (*data->longest == data->longest_fixed) { | |
435 | data->offset_fixed = l ? data->last_start_min : data->pos_min; | |
436 | if (data->flags & SF_BEFORE_EOL) | |
b81d288d | 437 | data->flags |
c277df42 IZ |
438 | |= ((data->flags & SF_BEFORE_EOL) << SF_FIX_SHIFT_EOL); |
439 | else | |
440 | data->flags &= ~SF_FIX_BEFORE_EOL; | |
a0ed51b3 LW |
441 | } |
442 | else { | |
c277df42 | 443 | data->offset_float_min = l ? data->last_start_min : data->pos_min; |
b81d288d AB |
444 | data->offset_float_max = (l |
445 | ? data->last_start_max | |
c277df42 IZ |
446 | : data->pos_min + data->pos_delta); |
447 | if (data->flags & SF_BEFORE_EOL) | |
b81d288d | 448 | data->flags |
c277df42 IZ |
449 | |= ((data->flags & SF_BEFORE_EOL) << SF_FL_SHIFT_EOL); |
450 | else | |
451 | data->flags &= ~SF_FL_BEFORE_EOL; | |
452 | } | |
453 | } | |
454 | SvCUR_set(data->last_found, 0); | |
455 | data->last_end = -1; | |
456 | data->flags &= ~SF_BEFORE_EOL; | |
457 | } | |
458 | ||
653099ff GS |
459 | /* Can match anything (initialization) */ |
460 | STATIC void | |
830247a4 | 461 | S_cl_anything(pTHX_ RExC_state_t *pRExC_state, struct regnode_charclass_class *cl) |
653099ff | 462 | { |
9af0acdb JH |
463 | int value; |
464 | ||
653099ff | 465 | ANYOF_CLASS_ZERO(cl); |
9af0acdb JH |
466 | for (value = 0; value < 256; ++value) |
467 | ANYOF_BITMAP_SET(cl, value); | |
1aa99e6b | 468 | cl->flags = ANYOF_EOS|ANYOF_UNICODE_ALL; |
653099ff GS |
469 | if (LOC) |
470 | cl->flags |= ANYOF_LOCALE; | |
471 | } | |
472 | ||
473 | /* Can match anything (initialization) */ | |
474 | STATIC int | |
475 | S_cl_is_anything(pTHX_ struct regnode_charclass_class *cl) | |
476 | { | |
477 | int value; | |
478 | ||
aaa51d5e | 479 | for (value = 0; value <= ANYOF_MAX; value += 2) |
653099ff GS |
480 | if (ANYOF_CLASS_TEST(cl, value) && ANYOF_CLASS_TEST(cl, value + 1)) |
481 | return 1; | |
1aa99e6b IH |
482 | if (!(cl->flags & ANYOF_UNICODE_ALL)) |
483 | return 0; | |
9af0acdb JH |
484 | for (value = 0; value < 256; ++value) |
485 | if (!ANYOF_BITMAP_TEST(cl, value)) | |
653099ff GS |
486 | return 0; |
487 | return 1; | |
488 | } | |
489 | ||
490 | /* Can match anything (initialization) */ | |
491 | STATIC void | |
830247a4 | 492 | S_cl_init(pTHX_ RExC_state_t *pRExC_state, struct regnode_charclass_class *cl) |
653099ff | 493 | { |
8ecf7187 | 494 | Zero(cl, 1, struct regnode_charclass_class); |
653099ff | 495 | cl->type = ANYOF; |
830247a4 | 496 | cl_anything(pRExC_state, cl); |
653099ff GS |
497 | } |
498 | ||
499 | STATIC void | |
830247a4 | 500 | S_cl_init_zero(pTHX_ RExC_state_t *pRExC_state, struct regnode_charclass_class *cl) |
653099ff | 501 | { |
8ecf7187 | 502 | Zero(cl, 1, struct regnode_charclass_class); |
653099ff | 503 | cl->type = ANYOF; |
830247a4 | 504 | cl_anything(pRExC_state, cl); |
653099ff GS |
505 | if (LOC) |
506 | cl->flags |= ANYOF_LOCALE; | |
507 | } | |
508 | ||
509 | /* 'And' a given class with another one. Can create false positives */ | |
510 | /* We assume that cl is not inverted */ | |
511 | STATIC void | |
512 | S_cl_and(pTHX_ struct regnode_charclass_class *cl, | |
513 | struct regnode_charclass_class *and_with) | |
514 | { | |
653099ff GS |
515 | if (!(and_with->flags & ANYOF_CLASS) |
516 | && !(cl->flags & ANYOF_CLASS) | |
517 | && (and_with->flags & ANYOF_LOCALE) == (cl->flags & ANYOF_LOCALE) | |
518 | && !(and_with->flags & ANYOF_FOLD) | |
519 | && !(cl->flags & ANYOF_FOLD)) { | |
520 | int i; | |
521 | ||
522 | if (and_with->flags & ANYOF_INVERT) | |
523 | for (i = 0; i < ANYOF_BITMAP_SIZE; i++) | |
524 | cl->bitmap[i] &= ~and_with->bitmap[i]; | |
525 | else | |
526 | for (i = 0; i < ANYOF_BITMAP_SIZE; i++) | |
527 | cl->bitmap[i] &= and_with->bitmap[i]; | |
528 | } /* XXXX: logic is complicated otherwise, leave it along for a moment. */ | |
529 | if (!(and_with->flags & ANYOF_EOS)) | |
530 | cl->flags &= ~ANYOF_EOS; | |
1aa99e6b IH |
531 | |
532 | if (cl->flags & ANYOF_UNICODE_ALL && and_with->flags & ANYOF_UNICODE) { | |
533 | cl->flags &= ~ANYOF_UNICODE_ALL; | |
534 | cl->flags |= ANYOF_UNICODE; | |
535 | ARG_SET(cl, ARG(and_with)); | |
536 | } | |
537 | if (!(and_with->flags & ANYOF_UNICODE_ALL)) | |
538 | cl->flags &= ~ANYOF_UNICODE_ALL; | |
539 | if (!(and_with->flags & (ANYOF_UNICODE|ANYOF_UNICODE_ALL))) | |
540 | cl->flags &= ~ANYOF_UNICODE; | |
653099ff GS |
541 | } |
542 | ||
543 | /* 'OR' a given class with another one. Can create false positives */ | |
544 | /* We assume that cl is not inverted */ | |
545 | STATIC void | |
830247a4 | 546 | S_cl_or(pTHX_ RExC_state_t *pRExC_state, struct regnode_charclass_class *cl, struct regnode_charclass_class *or_with) |
653099ff | 547 | { |
653099ff GS |
548 | if (or_with->flags & ANYOF_INVERT) { |
549 | /* We do not use | |
550 | * (B1 | CL1) | (!B2 & !CL2) = (B1 | !B2 & !CL2) | (CL1 | (!B2 & !CL2)) | |
551 | * <= (B1 | !B2) | (CL1 | !CL2) | |
552 | * which is wasteful if CL2 is small, but we ignore CL2: | |
553 | * (B1 | CL1) | (!B2 & !CL2) <= (B1 | CL1) | !B2 = (B1 | !B2) | CL1 | |
554 | * XXXX Can we handle case-fold? Unclear: | |
555 | * (OK1(i) | OK1(i')) | !(OK1(i) | OK1(i')) = | |
556 | * (OK1(i) | OK1(i')) | (!OK1(i) & !OK1(i')) | |
557 | */ | |
558 | if ( (or_with->flags & ANYOF_LOCALE) == (cl->flags & ANYOF_LOCALE) | |
559 | && !(or_with->flags & ANYOF_FOLD) | |
560 | && !(cl->flags & ANYOF_FOLD) ) { | |
561 | int i; | |
562 | ||
563 | for (i = 0; i < ANYOF_BITMAP_SIZE; i++) | |
564 | cl->bitmap[i] |= ~or_with->bitmap[i]; | |
565 | } /* XXXX: logic is complicated otherwise */ | |
566 | else { | |
830247a4 | 567 | cl_anything(pRExC_state, cl); |
653099ff GS |
568 | } |
569 | } else { | |
570 | /* (B1 | CL1) | (B2 | CL2) = (B1 | B2) | (CL1 | CL2)) */ | |
571 | if ( (or_with->flags & ANYOF_LOCALE) == (cl->flags & ANYOF_LOCALE) | |
b81d288d | 572 | && (!(or_with->flags & ANYOF_FOLD) |
653099ff GS |
573 | || (cl->flags & ANYOF_FOLD)) ) { |
574 | int i; | |
575 | ||
576 | /* OR char bitmap and class bitmap separately */ | |
577 | for (i = 0; i < ANYOF_BITMAP_SIZE; i++) | |
578 | cl->bitmap[i] |= or_with->bitmap[i]; | |
579 | if (or_with->flags & ANYOF_CLASS) { | |
580 | for (i = 0; i < ANYOF_CLASSBITMAP_SIZE; i++) | |
581 | cl->classflags[i] |= or_with->classflags[i]; | |
582 | cl->flags |= ANYOF_CLASS; | |
583 | } | |
584 | } | |
585 | else { /* XXXX: logic is complicated, leave it along for a moment. */ | |
830247a4 | 586 | cl_anything(pRExC_state, cl); |
653099ff GS |
587 | } |
588 | } | |
589 | if (or_with->flags & ANYOF_EOS) | |
590 | cl->flags |= ANYOF_EOS; | |
1aa99e6b IH |
591 | |
592 | if (cl->flags & ANYOF_UNICODE && or_with->flags & ANYOF_UNICODE && | |
593 | ARG(cl) != ARG(or_with)) { | |
594 | cl->flags |= ANYOF_UNICODE_ALL; | |
595 | cl->flags &= ~ANYOF_UNICODE; | |
596 | } | |
597 | if (or_with->flags & ANYOF_UNICODE_ALL) { | |
598 | cl->flags |= ANYOF_UNICODE_ALL; | |
599 | cl->flags &= ~ANYOF_UNICODE; | |
600 | } | |
653099ff GS |
601 | } |
602 | ||
603 | /* REx optimizer. Converts nodes into quickier variants "in place". | |
604 | Finds fixed substrings. */ | |
605 | ||
c277df42 IZ |
606 | /* Stops at toplevel WHILEM as well as at `last'. At end *scanp is set |
607 | to the position after last scanned or to NULL. */ | |
608 | ||
76e3520e | 609 | STATIC I32 |
830247a4 | 610 | S_study_chunk(pTHX_ RExC_state_t *pRExC_state, regnode **scanp, I32 *deltap, regnode *last, scan_data_t *data, U32 flags) |
c277df42 IZ |
611 | /* scanp: Start here (read-write). */ |
612 | /* deltap: Write maxlen-minlen here. */ | |
613 | /* last: Stop before this one. */ | |
614 | { | |
615 | I32 min = 0, pars = 0, code; | |
616 | regnode *scan = *scanp, *next; | |
617 | I32 delta = 0; | |
618 | int is_inf = (flags & SCF_DO_SUBSTR) && (data->flags & SF_IS_INF); | |
aca2d497 | 619 | int is_inf_internal = 0; /* The studied chunk is infinite */ |
c277df42 IZ |
620 | I32 is_par = OP(scan) == OPEN ? ARG(scan) : 0; |
621 | scan_data_t data_fake; | |
653099ff | 622 | struct regnode_charclass_class and_with; /* Valid if flags & SCF_DO_STCLASS_OR */ |
b81d288d | 623 | |
c277df42 IZ |
624 | while (scan && OP(scan) != END && scan < last) { |
625 | /* Peephole optimizer: */ | |
626 | ||
22c35a8c | 627 | if (PL_regkind[(U8)OP(scan)] == EXACT) { |
653099ff | 628 | /* Merge several consecutive EXACTish nodes into one. */ |
c277df42 IZ |
629 | regnode *n = regnext(scan); |
630 | U32 stringok = 1; | |
631 | #ifdef DEBUGGING | |
632 | regnode *stop = scan; | |
b81d288d | 633 | #endif |
c277df42 | 634 | |
cd439c50 | 635 | next = scan + NODE_SZ_STR(scan); |
c277df42 IZ |
636 | /* Skip NOTHING, merge EXACT*. */ |
637 | while (n && | |
b81d288d | 638 | ( PL_regkind[(U8)OP(n)] == NOTHING || |
c277df42 IZ |
639 | (stringok && (OP(n) == OP(scan)))) |
640 | && NEXT_OFF(n) | |
641 | && NEXT_OFF(scan) + NEXT_OFF(n) < I16_MAX) { | |
642 | if (OP(n) == TAIL || n > next) | |
643 | stringok = 0; | |
22c35a8c | 644 | if (PL_regkind[(U8)OP(n)] == NOTHING) { |
c277df42 IZ |
645 | NEXT_OFF(scan) += NEXT_OFF(n); |
646 | next = n + NODE_STEP_REGNODE; | |
647 | #ifdef DEBUGGING | |
648 | if (stringok) | |
649 | stop = n; | |
b81d288d | 650 | #endif |
c277df42 | 651 | n = regnext(n); |
a0ed51b3 | 652 | } |
f49d4d0f | 653 | else if (stringok) { |
cd439c50 | 654 | int oldl = STR_LEN(scan); |
c277df42 | 655 | regnode *nnext = regnext(n); |
f49d4d0f | 656 | |
b81d288d | 657 | if (oldl + STR_LEN(n) > U8_MAX) |
c277df42 IZ |
658 | break; |
659 | NEXT_OFF(scan) += NEXT_OFF(n); | |
cd439c50 IZ |
660 | STR_LEN(scan) += STR_LEN(n); |
661 | next = n + NODE_SZ_STR(n); | |
c277df42 | 662 | /* Now we can overwrite *n : */ |
f49d4d0f | 663 | Move(STRING(n), STRING(scan) + oldl, STR_LEN(n), char); |
c277df42 | 664 | #ifdef DEBUGGING |
f49d4d0f | 665 | stop = next - 1; |
b81d288d | 666 | #endif |
c277df42 IZ |
667 | n = nnext; |
668 | } | |
669 | } | |
670 | #ifdef DEBUGGING | |
671 | /* Allow dumping */ | |
cd439c50 | 672 | n = scan + NODE_SZ_STR(scan); |
c277df42 | 673 | while (n <= stop) { |
22c35a8c | 674 | if (PL_regkind[(U8)OP(n)] != NOTHING || OP(n) == NOTHING) { |
c277df42 IZ |
675 | OP(n) = OPTIMIZED; |
676 | NEXT_OFF(n) = 0; | |
677 | } | |
678 | n++; | |
679 | } | |
653099ff | 680 | #endif |
c277df42 | 681 | } |
653099ff GS |
682 | /* Follow the next-chain of the current node and optimize |
683 | away all the NOTHINGs from it. */ | |
c277df42 | 684 | if (OP(scan) != CURLYX) { |
048cfca1 GS |
685 | int max = (reg_off_by_arg[OP(scan)] |
686 | ? I32_MAX | |
687 | /* I32 may be smaller than U16 on CRAYs! */ | |
688 | : (I32_MAX < U16_MAX ? I32_MAX : U16_MAX)); | |
c277df42 IZ |
689 | int off = (reg_off_by_arg[OP(scan)] ? ARG(scan) : NEXT_OFF(scan)); |
690 | int noff; | |
691 | regnode *n = scan; | |
b81d288d | 692 | |
c277df42 IZ |
693 | /* Skip NOTHING and LONGJMP. */ |
694 | while ((n = regnext(n)) | |
22c35a8c | 695 | && ((PL_regkind[(U8)OP(n)] == NOTHING && (noff = NEXT_OFF(n))) |
c277df42 IZ |
696 | || ((OP(n) == LONGJMP) && (noff = ARG(n)))) |
697 | && off + noff < max) | |
698 | off += noff; | |
699 | if (reg_off_by_arg[OP(scan)]) | |
700 | ARG(scan) = off; | |
b81d288d | 701 | else |
c277df42 IZ |
702 | NEXT_OFF(scan) = off; |
703 | } | |
653099ff GS |
704 | /* The principal pseudo-switch. Cannot be a switch, since we |
705 | look into several different things. */ | |
b81d288d | 706 | if (OP(scan) == BRANCH || OP(scan) == BRANCHJ |
c277df42 IZ |
707 | || OP(scan) == IFTHEN || OP(scan) == SUSPEND) { |
708 | next = regnext(scan); | |
709 | code = OP(scan); | |
b81d288d AB |
710 | |
711 | if (OP(next) == code || code == IFTHEN || code == SUSPEND) { | |
c277df42 | 712 | I32 max1 = 0, min1 = I32_MAX, num = 0; |
653099ff | 713 | struct regnode_charclass_class accum; |
c277df42 | 714 | |
653099ff | 715 | if (flags & SCF_DO_SUBSTR) /* XXXX Add !SUSPEND? */ |
830247a4 | 716 | scan_commit(pRExC_state, data); /* Cannot merge strings after this. */ |
653099ff | 717 | if (flags & SCF_DO_STCLASS) |
830247a4 | 718 | cl_init_zero(pRExC_state, &accum); |
c277df42 | 719 | while (OP(scan) == code) { |
830247a4 | 720 | I32 deltanext, minnext, f = 0, fake; |
653099ff | 721 | struct regnode_charclass_class this_class; |
c277df42 IZ |
722 | |
723 | num++; | |
724 | data_fake.flags = 0; | |
b81d288d | 725 | if (data) { |
2c2d71f5 | 726 | data_fake.whilem_c = data->whilem_c; |
cb434fcc IZ |
727 | data_fake.last_closep = data->last_closep; |
728 | } | |
729 | else | |
730 | data_fake.last_closep = &fake; | |
c277df42 IZ |
731 | next = regnext(scan); |
732 | scan = NEXTOPER(scan); | |
733 | if (code != BRANCH) | |
734 | scan = NEXTOPER(scan); | |
653099ff | 735 | if (flags & SCF_DO_STCLASS) { |
830247a4 | 736 | cl_init(pRExC_state, &this_class); |
653099ff GS |
737 | data_fake.start_class = &this_class; |
738 | f = SCF_DO_STCLASS_AND; | |
b81d288d | 739 | } |
e1901655 IZ |
740 | if (flags & SCF_WHILEM_VISITED_POS) |
741 | f |= SCF_WHILEM_VISITED_POS; | |
653099ff | 742 | /* we suppose the run is continuous, last=next...*/ |
830247a4 IZ |
743 | minnext = study_chunk(pRExC_state, &scan, &deltanext, |
744 | next, &data_fake, f); | |
b81d288d | 745 | if (min1 > minnext) |
c277df42 IZ |
746 | min1 = minnext; |
747 | if (max1 < minnext + deltanext) | |
748 | max1 = minnext + deltanext; | |
749 | if (deltanext == I32_MAX) | |
aca2d497 | 750 | is_inf = is_inf_internal = 1; |
c277df42 IZ |
751 | scan = next; |
752 | if (data_fake.flags & (SF_HAS_PAR|SF_IN_PAR)) | |
753 | pars++; | |
405ff068 | 754 | if (data && (data_fake.flags & SF_HAS_EVAL)) |
c277df42 | 755 | data->flags |= SF_HAS_EVAL; |
2c2d71f5 JH |
756 | if (data) |
757 | data->whilem_c = data_fake.whilem_c; | |
653099ff | 758 | if (flags & SCF_DO_STCLASS) |
830247a4 | 759 | cl_or(pRExC_state, &accum, &this_class); |
b81d288d | 760 | if (code == SUSPEND) |
c277df42 IZ |
761 | break; |
762 | } | |
763 | if (code == IFTHEN && num < 2) /* Empty ELSE branch */ | |
764 | min1 = 0; | |
765 | if (flags & SCF_DO_SUBSTR) { | |
766 | data->pos_min += min1; | |
767 | data->pos_delta += max1 - min1; | |
768 | if (max1 != min1 || is_inf) | |
769 | data->longest = &(data->longest_float); | |
770 | } | |
771 | min += min1; | |
772 | delta += max1 - min1; | |
653099ff | 773 | if (flags & SCF_DO_STCLASS_OR) { |
830247a4 | 774 | cl_or(pRExC_state, data->start_class, &accum); |
653099ff GS |
775 | if (min1) { |
776 | cl_and(data->start_class, &and_with); | |
777 | flags &= ~SCF_DO_STCLASS; | |
778 | } | |
779 | } | |
780 | else if (flags & SCF_DO_STCLASS_AND) { | |
de0c8cb8 GS |
781 | if (min1) { |
782 | cl_and(data->start_class, &accum); | |
653099ff | 783 | flags &= ~SCF_DO_STCLASS; |
de0c8cb8 GS |
784 | } |
785 | else { | |
b81d288d | 786 | /* Switch to OR mode: cache the old value of |
de0c8cb8 GS |
787 | * data->start_class */ |
788 | StructCopy(data->start_class, &and_with, | |
789 | struct regnode_charclass_class); | |
790 | flags &= ~SCF_DO_STCLASS_AND; | |
791 | StructCopy(&accum, data->start_class, | |
792 | struct regnode_charclass_class); | |
793 | flags |= SCF_DO_STCLASS_OR; | |
794 | data->start_class->flags |= ANYOF_EOS; | |
795 | } | |
653099ff | 796 | } |
a0ed51b3 LW |
797 | } |
798 | else if (code == BRANCHJ) /* single branch is optimized. */ | |
c277df42 IZ |
799 | scan = NEXTOPER(NEXTOPER(scan)); |
800 | else /* single branch is optimized. */ | |
801 | scan = NEXTOPER(scan); | |
802 | continue; | |
a0ed51b3 LW |
803 | } |
804 | else if (OP(scan) == EXACT) { | |
cd439c50 | 805 | I32 l = STR_LEN(scan); |
1aa99e6b | 806 | UV uc = *((U8*)STRING(scan)); |
a0ed51b3 | 807 | if (UTF) { |
1aa99e6b IH |
808 | U8 *s = (U8*)STRING(scan); |
809 | l = utf8_length(s, s + l); | |
810 | uc = utf8_to_uv_simple(s, NULL); | |
a0ed51b3 LW |
811 | } |
812 | min += l; | |
c277df42 | 813 | if (flags & SCF_DO_SUBSTR) { /* Update longest substr. */ |
c277df42 IZ |
814 | /* The code below prefers earlier match for fixed |
815 | offset, later match for variable offset. */ | |
816 | if (data->last_end == -1) { /* Update the start info. */ | |
817 | data->last_start_min = data->pos_min; | |
818 | data->last_start_max = is_inf | |
b81d288d | 819 | ? I32_MAX : data->pos_min + data->pos_delta; |
c277df42 | 820 | } |
cd439c50 | 821 | sv_catpvn(data->last_found, STRING(scan), STR_LEN(scan)); |
c277df42 IZ |
822 | data->last_end = data->pos_min + l; |
823 | data->pos_min += l; /* As in the first entry. */ | |
824 | data->flags &= ~SF_BEFORE_EOL; | |
825 | } | |
653099ff GS |
826 | if (flags & SCF_DO_STCLASS_AND) { |
827 | /* Check whether it is compatible with what we know already! */ | |
828 | int compat = 1; | |
829 | ||
1aa99e6b | 830 | if (uc >= 0x100 || |
b81d288d | 831 | !(data->start_class->flags & (ANYOF_CLASS | ANYOF_LOCALE)) |
1aa99e6b | 832 | && !ANYOF_BITMAP_TEST(data->start_class, uc) |
653099ff | 833 | && (!(data->start_class->flags & ANYOF_FOLD) |
1aa99e6b | 834 | || !ANYOF_BITMAP_TEST(data->start_class, PL_fold[uc]))) |
653099ff GS |
835 | compat = 0; |
836 | ANYOF_CLASS_ZERO(data->start_class); | |
837 | ANYOF_BITMAP_ZERO(data->start_class); | |
838 | if (compat) | |
1aa99e6b | 839 | ANYOF_BITMAP_SET(data->start_class, uc); |
653099ff | 840 | data->start_class->flags &= ~ANYOF_EOS; |
9b877dbb IH |
841 | if (uc < 0x100) |
842 | data->start_class->flags &= ~ANYOF_UNICODE_ALL; | |
653099ff GS |
843 | } |
844 | else if (flags & SCF_DO_STCLASS_OR) { | |
845 | /* false positive possible if the class is case-folded */ | |
1aa99e6b | 846 | if (uc < 0x100) |
9b877dbb IH |
847 | ANYOF_BITMAP_SET(data->start_class, uc); |
848 | else | |
849 | data->start_class->flags |= ANYOF_UNICODE_ALL; | |
653099ff GS |
850 | data->start_class->flags &= ~ANYOF_EOS; |
851 | cl_and(data->start_class, &and_with); | |
852 | } | |
853 | flags &= ~SCF_DO_STCLASS; | |
a0ed51b3 | 854 | } |
653099ff | 855 | else if (PL_regkind[(U8)OP(scan)] == EXACT) { /* But OP != EXACT! */ |
cd439c50 | 856 | I32 l = STR_LEN(scan); |
1aa99e6b | 857 | UV uc = *((U8*)STRING(scan)); |
653099ff GS |
858 | |
859 | /* Search for fixed substrings supports EXACT only. */ | |
b81d288d | 860 | if (flags & SCF_DO_SUBSTR) |
830247a4 | 861 | scan_commit(pRExC_state, data); |
a0ed51b3 | 862 | if (UTF) { |
1aa99e6b IH |
863 | U8 *s = (U8 *)STRING(scan); |
864 | l = utf8_length(s, s + l); | |
865 | uc = utf8_to_uv_simple(s, NULL); | |
a0ed51b3 LW |
866 | } |
867 | min += l; | |
c277df42 | 868 | if (data && (flags & SCF_DO_SUBSTR)) |
a0ed51b3 | 869 | data->pos_min += l; |
653099ff GS |
870 | if (flags & SCF_DO_STCLASS_AND) { |
871 | /* Check whether it is compatible with what we know already! */ | |
872 | int compat = 1; | |
873 | ||
1aa99e6b | 874 | if (uc >= 0x100 || |
b81d288d | 875 | !(data->start_class->flags & (ANYOF_CLASS | ANYOF_LOCALE)) |
1aa99e6b IH |
876 | && !ANYOF_BITMAP_TEST(data->start_class, uc) |
877 | && !ANYOF_BITMAP_TEST(data->start_class, PL_fold[uc])) | |
653099ff GS |
878 | compat = 0; |
879 | ANYOF_CLASS_ZERO(data->start_class); | |
880 | ANYOF_BITMAP_ZERO(data->start_class); | |
881 | if (compat) { | |
1aa99e6b | 882 | ANYOF_BITMAP_SET(data->start_class, uc); |
653099ff GS |
883 | data->start_class->flags &= ~ANYOF_EOS; |
884 | data->start_class->flags |= ANYOF_FOLD; | |
885 | if (OP(scan) == EXACTFL) | |
886 | data->start_class->flags |= ANYOF_LOCALE; | |
887 | } | |
888 | } | |
889 | else if (flags & SCF_DO_STCLASS_OR) { | |
890 | if (data->start_class->flags & ANYOF_FOLD) { | |
891 | /* false positive possible if the class is case-folded. | |
892 | Assume that the locale settings are the same... */ | |
1aa99e6b IH |
893 | if (uc < 0x100) |
894 | ANYOF_BITMAP_SET(data->start_class, uc); | |
653099ff GS |
895 | data->start_class->flags &= ~ANYOF_EOS; |
896 | } | |
897 | cl_and(data->start_class, &and_with); | |
898 | } | |
899 | flags &= ~SCF_DO_STCLASS; | |
a0ed51b3 | 900 | } |
4d61ec05 | 901 | else if (strchr((char*)PL_varies,OP(scan))) { |
aa7a4b56 MH |
902 | I32 mincount, maxcount, minnext, deltanext, fl; |
903 | I32 f = flags, pos_before = 0; | |
c277df42 | 904 | regnode *oscan = scan; |
653099ff GS |
905 | struct regnode_charclass_class this_class; |
906 | struct regnode_charclass_class *oclass = NULL; | |
907 | ||
22c35a8c | 908 | switch (PL_regkind[(U8)OP(scan)]) { |
653099ff | 909 | case WHILEM: /* End of (?:...)* . */ |
c277df42 IZ |
910 | scan = NEXTOPER(scan); |
911 | goto finish; | |
912 | case PLUS: | |
653099ff | 913 | if (flags & (SCF_DO_SUBSTR | SCF_DO_STCLASS)) { |
c277df42 | 914 | next = NEXTOPER(scan); |
653099ff | 915 | if (OP(next) == EXACT || (flags & SCF_DO_STCLASS)) { |
b81d288d AB |
916 | mincount = 1; |
917 | maxcount = REG_INFTY; | |
c277df42 IZ |
918 | next = regnext(scan); |
919 | scan = NEXTOPER(scan); | |
920 | goto do_curly; | |
921 | } | |
922 | } | |
923 | if (flags & SCF_DO_SUBSTR) | |
924 | data->pos_min++; | |
925 | min++; | |
926 | /* Fall through. */ | |
927 | case STAR: | |
653099ff GS |
928 | if (flags & SCF_DO_STCLASS) { |
929 | mincount = 0; | |
b81d288d | 930 | maxcount = REG_INFTY; |
653099ff GS |
931 | next = regnext(scan); |
932 | scan = NEXTOPER(scan); | |
933 | goto do_curly; | |
934 | } | |
b81d288d | 935 | is_inf = is_inf_internal = 1; |
c277df42 IZ |
936 | scan = regnext(scan); |
937 | if (flags & SCF_DO_SUBSTR) { | |
830247a4 | 938 | scan_commit(pRExC_state, data); /* Cannot extend fixed substrings */ |
c277df42 IZ |
939 | data->longest = &(data->longest_float); |
940 | } | |
941 | goto optimize_curly_tail; | |
942 | case CURLY: | |
b81d288d | 943 | mincount = ARG1(scan); |
c277df42 IZ |
944 | maxcount = ARG2(scan); |
945 | next = regnext(scan); | |
cb434fcc IZ |
946 | if (OP(scan) == CURLYX) { |
947 | I32 lp = (data ? *(data->last_closep) : 0); | |
948 | ||
949 | scan->flags = ((lp <= U8_MAX) ? lp : U8_MAX); | |
950 | } | |
c277df42 IZ |
951 | scan = NEXTOPER(scan) + EXTRA_STEP_2ARGS; |
952 | do_curly: | |
953 | if (flags & SCF_DO_SUBSTR) { | |
830247a4 | 954 | if (mincount == 0) scan_commit(pRExC_state,data); /* Cannot extend fixed substrings */ |
c277df42 IZ |
955 | pos_before = data->pos_min; |
956 | } | |
957 | if (data) { | |
958 | fl = data->flags; | |
959 | data->flags &= ~(SF_HAS_PAR|SF_IN_PAR|SF_HAS_EVAL); | |
960 | if (is_inf) | |
961 | data->flags |= SF_IS_INF; | |
962 | } | |
653099ff | 963 | if (flags & SCF_DO_STCLASS) { |
830247a4 | 964 | cl_init(pRExC_state, &this_class); |
653099ff GS |
965 | oclass = data->start_class; |
966 | data->start_class = &this_class; | |
967 | f |= SCF_DO_STCLASS_AND; | |
968 | f &= ~SCF_DO_STCLASS_OR; | |
969 | } | |
e1901655 IZ |
970 | /* These are the cases when once a subexpression |
971 | fails at a particular position, it cannot succeed | |
972 | even after backtracking at the enclosing scope. | |
b81d288d | 973 | |
e1901655 IZ |
974 | XXXX what if minimal match and we are at the |
975 | initial run of {n,m}? */ | |
976 | if ((mincount != maxcount - 1) && (maxcount != REG_INFTY)) | |
977 | f &= ~SCF_WHILEM_VISITED_POS; | |
653099ff | 978 | |
c277df42 | 979 | /* This will finish on WHILEM, setting scan, or on NULL: */ |
b81d288d AB |
980 | minnext = study_chunk(pRExC_state, &scan, &deltanext, last, data, |
981 | mincount == 0 | |
653099ff GS |
982 | ? (f & ~SCF_DO_SUBSTR) : f); |
983 | ||
984 | if (flags & SCF_DO_STCLASS) | |
985 | data->start_class = oclass; | |
986 | if (mincount == 0 || minnext == 0) { | |
987 | if (flags & SCF_DO_STCLASS_OR) { | |
830247a4 | 988 | cl_or(pRExC_state, data->start_class, &this_class); |
653099ff GS |
989 | } |
990 | else if (flags & SCF_DO_STCLASS_AND) { | |
b81d288d | 991 | /* Switch to OR mode: cache the old value of |
653099ff GS |
992 | * data->start_class */ |
993 | StructCopy(data->start_class, &and_with, | |
994 | struct regnode_charclass_class); | |
995 | flags &= ~SCF_DO_STCLASS_AND; | |
996 | StructCopy(&this_class, data->start_class, | |
997 | struct regnode_charclass_class); | |
998 | flags |= SCF_DO_STCLASS_OR; | |
999 | data->start_class->flags |= ANYOF_EOS; | |
1000 | } | |
1001 | } else { /* Non-zero len */ | |
1002 | if (flags & SCF_DO_STCLASS_OR) { | |
830247a4 | 1003 | cl_or(pRExC_state, data->start_class, &this_class); |
653099ff GS |
1004 | cl_and(data->start_class, &and_with); |
1005 | } | |
1006 | else if (flags & SCF_DO_STCLASS_AND) | |
1007 | cl_and(data->start_class, &this_class); | |
1008 | flags &= ~SCF_DO_STCLASS; | |
1009 | } | |
c277df42 IZ |
1010 | if (!scan) /* It was not CURLYX, but CURLY. */ |
1011 | scan = next; | |
b81d288d | 1012 | if (ckWARN(WARN_REGEXP) && (minnext + deltanext == 0) |
821b33a5 | 1013 | && !(data->flags & (SF_HAS_PAR|SF_IN_PAR)) |
17feb5d5 | 1014 | && maxcount <= REG_INFTY/3) /* Complement check for big count */ |
b45f050a | 1015 | { |
830247a4 | 1016 | vWARN(RExC_parse, |
b45f050a JF |
1017 | "Quantifier unexpected on zero-length expression"); |
1018 | } | |
1019 | ||
c277df42 | 1020 | min += minnext * mincount; |
b81d288d | 1021 | is_inf_internal |= ((maxcount == REG_INFTY |
155aba94 GS |
1022 | && (minnext + deltanext) > 0) |
1023 | || deltanext == I32_MAX); | |
aca2d497 | 1024 | is_inf |= is_inf_internal; |
c277df42 IZ |
1025 | delta += (minnext + deltanext) * maxcount - minnext * mincount; |
1026 | ||
1027 | /* Try powerful optimization CURLYX => CURLYN. */ | |
b81d288d | 1028 | if ( OP(oscan) == CURLYX && data |
c277df42 IZ |
1029 | && data->flags & SF_IN_PAR |
1030 | && !(data->flags & SF_HAS_EVAL) | |
1031 | && !deltanext && minnext == 1 ) { | |
1032 | /* Try to optimize to CURLYN. */ | |
1033 | regnode *nxt = NEXTOPER(oscan) + EXTRA_STEP_2ARGS; | |
1034 | regnode *nxt1 = nxt, *nxt2; | |
1035 | ||
1036 | /* Skip open. */ | |
1037 | nxt = regnext(nxt); | |
4d61ec05 | 1038 | if (!strchr((char*)PL_simple,OP(nxt)) |
22c35a8c | 1039 | && !(PL_regkind[(U8)OP(nxt)] == EXACT |
b81d288d | 1040 | && STR_LEN(nxt) == 1)) |
c277df42 IZ |
1041 | goto nogo; |
1042 | nxt2 = nxt; | |
1043 | nxt = regnext(nxt); | |
b81d288d | 1044 | if (OP(nxt) != CLOSE) |
c277df42 IZ |
1045 | goto nogo; |
1046 | /* Now we know that nxt2 is the only contents: */ | |
1047 | oscan->flags = ARG(nxt); | |
1048 | OP(oscan) = CURLYN; | |
1049 | OP(nxt1) = NOTHING; /* was OPEN. */ | |
1050 | #ifdef DEBUGGING | |
1051 | OP(nxt1 + 1) = OPTIMIZED; /* was count. */ | |
1052 | NEXT_OFF(nxt1+ 1) = 0; /* just for consistancy. */ | |
1053 | NEXT_OFF(nxt2) = 0; /* just for consistancy with CURLY. */ | |
1054 | OP(nxt) = OPTIMIZED; /* was CLOSE. */ | |
1055 | OP(nxt + 1) = OPTIMIZED; /* was count. */ | |
1056 | NEXT_OFF(nxt+ 1) = 0; /* just for consistancy. */ | |
b81d288d | 1057 | #endif |
c277df42 | 1058 | } |
c277df42 IZ |
1059 | nogo: |
1060 | ||
1061 | /* Try optimization CURLYX => CURLYM. */ | |
b81d288d | 1062 | if ( OP(oscan) == CURLYX && data |
c277df42 | 1063 | && !(data->flags & SF_HAS_PAR) |
c277df42 IZ |
1064 | && !(data->flags & SF_HAS_EVAL) |
1065 | && !deltanext ) { | |
1066 | /* XXXX How to optimize if data == 0? */ | |
1067 | /* Optimize to a simpler form. */ | |
1068 | regnode *nxt = NEXTOPER(oscan) + EXTRA_STEP_2ARGS; /* OPEN */ | |
1069 | regnode *nxt2; | |
1070 | ||
1071 | OP(oscan) = CURLYM; | |
1072 | while ( (nxt2 = regnext(nxt)) /* skip over embedded stuff*/ | |
b81d288d | 1073 | && (OP(nxt2) != WHILEM)) |
c277df42 IZ |
1074 | nxt = nxt2; |
1075 | OP(nxt2) = SUCCEED; /* Whas WHILEM */ | |
c277df42 IZ |
1076 | /* Need to optimize away parenths. */ |
1077 | if (data->flags & SF_IN_PAR) { | |
1078 | /* Set the parenth number. */ | |
1079 | regnode *nxt1 = NEXTOPER(oscan) + EXTRA_STEP_2ARGS; /* OPEN*/ | |
1080 | ||
b81d288d | 1081 | if (OP(nxt) != CLOSE) |
b45f050a | 1082 | FAIL("Panic opt close"); |
c277df42 IZ |
1083 | oscan->flags = ARG(nxt); |
1084 | OP(nxt1) = OPTIMIZED; /* was OPEN. */ | |
1085 | OP(nxt) = OPTIMIZED; /* was CLOSE. */ | |
1086 | #ifdef DEBUGGING | |
1087 | OP(nxt1 + 1) = OPTIMIZED; /* was count. */ | |
1088 | OP(nxt + 1) = OPTIMIZED; /* was count. */ | |
1089 | NEXT_OFF(nxt1 + 1) = 0; /* just for consistancy. */ | |
1090 | NEXT_OFF(nxt + 1) = 0; /* just for consistancy. */ | |
b81d288d | 1091 | #endif |
c277df42 IZ |
1092 | #if 0 |
1093 | while ( nxt1 && (OP(nxt1) != WHILEM)) { | |
1094 | regnode *nnxt = regnext(nxt1); | |
b81d288d | 1095 | |
c277df42 IZ |
1096 | if (nnxt == nxt) { |
1097 | if (reg_off_by_arg[OP(nxt1)]) | |
1098 | ARG_SET(nxt1, nxt2 - nxt1); | |
1099 | else if (nxt2 - nxt1 < U16_MAX) | |
1100 | NEXT_OFF(nxt1) = nxt2 - nxt1; | |
1101 | else | |
1102 | OP(nxt) = NOTHING; /* Cannot beautify */ | |
1103 | } | |
1104 | nxt1 = nnxt; | |
1105 | } | |
1106 | #endif | |
1107 | /* Optimize again: */ | |
b81d288d | 1108 | study_chunk(pRExC_state, &nxt1, &deltanext, nxt, |
e1901655 | 1109 | NULL, 0); |
a0ed51b3 LW |
1110 | } |
1111 | else | |
c277df42 | 1112 | oscan->flags = 0; |
c277df42 | 1113 | } |
e1901655 IZ |
1114 | else if ((OP(oscan) == CURLYX) |
1115 | && (flags & SCF_WHILEM_VISITED_POS) | |
1116 | /* See the comment on a similar expression above. | |
1117 | However, this time it not a subexpression | |
1118 | we care about, but the expression itself. */ | |
1119 | && (maxcount == REG_INFTY) | |
1120 | && data && ++data->whilem_c < 16) { | |
1121 | /* This stays as CURLYX, we can put the count/of pair. */ | |
2c2d71f5 JH |
1122 | /* Find WHILEM (as in regexec.c) */ |
1123 | regnode *nxt = oscan + NEXT_OFF(oscan); | |
1124 | ||
1125 | if (OP(PREVOPER(nxt)) == NOTHING) /* LONGJMP */ | |
1126 | nxt += ARG(nxt); | |
1127 | PREVOPER(nxt)->flags = data->whilem_c | |
830247a4 | 1128 | | (RExC_whilem_seen << 4); /* On WHILEM */ |
2c2d71f5 | 1129 | } |
b81d288d | 1130 | if (data && fl & (SF_HAS_PAR|SF_IN_PAR)) |
c277df42 IZ |
1131 | pars++; |
1132 | if (flags & SCF_DO_SUBSTR) { | |
1133 | SV *last_str = Nullsv; | |
1134 | int counted = mincount != 0; | |
1135 | ||
1136 | if (data->last_end > 0 && mincount != 0) { /* Ends with a string. */ | |
b81d288d | 1137 | I32 b = pos_before >= data->last_start_min |
c277df42 IZ |
1138 | ? pos_before : data->last_start_min; |
1139 | STRLEN l; | |
1140 | char *s = SvPV(data->last_found, l); | |
a0ed51b3 LW |
1141 | I32 old = b - data->last_start_min; |
1142 | ||
1143 | if (UTF) | |
1144 | old = utf8_hop((U8*)s, old) - (U8*)s; | |
c277df42 | 1145 | |
a0ed51b3 | 1146 | l -= old; |
c277df42 | 1147 | /* Get the added string: */ |
79cb57f6 | 1148 | last_str = newSVpvn(s + old, l); |
c277df42 IZ |
1149 | if (deltanext == 0 && pos_before == b) { |
1150 | /* What was added is a constant string */ | |
1151 | if (mincount > 1) { | |
1152 | SvGROW(last_str, (mincount * l) + 1); | |
b81d288d | 1153 | repeatcpy(SvPVX(last_str) + l, |
c277df42 IZ |
1154 | SvPVX(last_str), l, mincount - 1); |
1155 | SvCUR(last_str) *= mincount; | |
1156 | /* Add additional parts. */ | |
b81d288d | 1157 | SvCUR_set(data->last_found, |
c277df42 IZ |
1158 | SvCUR(data->last_found) - l); |
1159 | sv_catsv(data->last_found, last_str); | |
1160 | data->last_end += l * (mincount - 1); | |
1161 | } | |
2a8d9689 HS |
1162 | } else { |
1163 | /* start offset must point into the last copy */ | |
1164 | data->last_start_min += minnext * (mincount - 1); | |
4b2cff9a HS |
1165 | data->last_start_max += is_inf ? 0 : (maxcount - 1) |
1166 | * (minnext + data->pos_delta); | |
c277df42 IZ |
1167 | } |
1168 | } | |
1169 | /* It is counted once already... */ | |
1170 | data->pos_min += minnext * (mincount - counted); | |
1171 | data->pos_delta += - counted * deltanext + | |
1172 | (minnext + deltanext) * maxcount - minnext * mincount; | |
1173 | if (mincount != maxcount) { | |
653099ff GS |
1174 | /* Cannot extend fixed substrings found inside |
1175 | the group. */ | |
830247a4 | 1176 | scan_commit(pRExC_state,data); |
c277df42 IZ |
1177 | if (mincount && last_str) { |
1178 | sv_setsv(data->last_found, last_str); | |
1179 | data->last_end = data->pos_min; | |
b81d288d | 1180 | data->last_start_min = |
a0ed51b3 | 1181 | data->pos_min - CHR_SVLEN(last_str); |
b81d288d AB |
1182 | data->last_start_max = is_inf |
1183 | ? I32_MAX | |
c277df42 | 1184 | : data->pos_min + data->pos_delta |
a0ed51b3 | 1185 | - CHR_SVLEN(last_str); |
c277df42 IZ |
1186 | } |
1187 | data->longest = &(data->longest_float); | |
1188 | } | |
aca2d497 | 1189 | SvREFCNT_dec(last_str); |
c277df42 | 1190 | } |
405ff068 | 1191 | if (data && (fl & SF_HAS_EVAL)) |
c277df42 IZ |
1192 | data->flags |= SF_HAS_EVAL; |
1193 | optimize_curly_tail: | |
c277df42 | 1194 | if (OP(oscan) != CURLYX) { |
22c35a8c | 1195 | while (PL_regkind[(U8)OP(next = regnext(oscan))] == NOTHING |
c277df42 IZ |
1196 | && NEXT_OFF(next)) |
1197 | NEXT_OFF(oscan) += NEXT_OFF(next); | |
1198 | } | |
c277df42 | 1199 | continue; |
653099ff | 1200 | default: /* REF and CLUMP only? */ |
c277df42 | 1201 | if (flags & SCF_DO_SUBSTR) { |
830247a4 | 1202 | scan_commit(pRExC_state,data); /* Cannot expect anything... */ |
c277df42 IZ |
1203 | data->longest = &(data->longest_float); |
1204 | } | |
aca2d497 | 1205 | is_inf = is_inf_internal = 1; |
653099ff | 1206 | if (flags & SCF_DO_STCLASS_OR) |
830247a4 | 1207 | cl_anything(pRExC_state, data->start_class); |
653099ff | 1208 | flags &= ~SCF_DO_STCLASS; |
c277df42 IZ |
1209 | break; |
1210 | } | |
a0ed51b3 | 1211 | } |
ffc61ed2 | 1212 | else if (strchr((char*)PL_simple,OP(scan))) { |
653099ff GS |
1213 | int value; |
1214 | ||
c277df42 | 1215 | if (flags & SCF_DO_SUBSTR) { |
830247a4 | 1216 | scan_commit(pRExC_state,data); |
c277df42 IZ |
1217 | data->pos_min++; |
1218 | } | |
1219 | min++; | |
653099ff GS |
1220 | if (flags & SCF_DO_STCLASS) { |
1221 | data->start_class->flags &= ~ANYOF_EOS; /* No match on empty */ | |
1222 | ||
1223 | /* Some of the logic below assumes that switching | |
1224 | locale on will only add false positives. */ | |
1225 | switch (PL_regkind[(U8)OP(scan)]) { | |
653099ff | 1226 | case SANY: |
653099ff GS |
1227 | default: |
1228 | do_default: | |
1229 | /* Perl_croak(aTHX_ "panic: unexpected simple REx opcode %d", OP(scan)); */ | |
1230 | if (flags & SCF_DO_STCLASS_OR) /* Allow everything */ | |
830247a4 | 1231 | cl_anything(pRExC_state, data->start_class); |
653099ff GS |
1232 | break; |
1233 | case REG_ANY: | |
1234 | if (OP(scan) == SANY) | |
1235 | goto do_default; | |
1236 | if (flags & SCF_DO_STCLASS_OR) { /* Everything but \n */ | |
1237 | value = (ANYOF_BITMAP_TEST(data->start_class,'\n') | |
1238 | || (data->start_class->flags & ANYOF_CLASS)); | |
830247a4 | 1239 | cl_anything(pRExC_state, data->start_class); |
653099ff GS |
1240 | } |
1241 | if (flags & SCF_DO_STCLASS_AND || !value) | |
1242 | ANYOF_BITMAP_CLEAR(data->start_class,'\n'); | |
1243 | break; | |
1244 | case ANYOF: | |
1245 | if (flags & SCF_DO_STCLASS_AND) | |
1246 | cl_and(data->start_class, | |
1247 | (struct regnode_charclass_class*)scan); | |
1248 | else | |
830247a4 | 1249 | cl_or(pRExC_state, data->start_class, |
653099ff GS |
1250 | (struct regnode_charclass_class*)scan); |
1251 | break; | |
1252 | case ALNUM: | |
1253 | if (flags & SCF_DO_STCLASS_AND) { | |
1254 | if (!(data->start_class->flags & ANYOF_LOCALE)) { | |
1255 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NALNUM); | |
1256 | for (value = 0; value < 256; value++) | |
1257 | if (!isALNUM(value)) | |
1258 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1259 | } | |
1260 | } | |
1261 | else { | |
1262 | if (data->start_class->flags & ANYOF_LOCALE) | |
1263 | ANYOF_CLASS_SET(data->start_class,ANYOF_ALNUM); | |
1264 | else { | |
1265 | for (value = 0; value < 256; value++) | |
1266 | if (isALNUM(value)) | |
b81d288d | 1267 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1268 | } |
1269 | } | |
1270 | break; | |
1271 | case ALNUML: | |
1272 | if (flags & SCF_DO_STCLASS_AND) { | |
1273 | if (data->start_class->flags & ANYOF_LOCALE) | |
1274 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NALNUM); | |
1275 | } | |
1276 | else { | |
1277 | ANYOF_CLASS_SET(data->start_class,ANYOF_ALNUM); | |
1278 | data->start_class->flags |= ANYOF_LOCALE; | |
1279 | } | |
1280 | break; | |
1281 | case NALNUM: | |
1282 | if (flags & SCF_DO_STCLASS_AND) { | |
1283 | if (!(data->start_class->flags & ANYOF_LOCALE)) { | |
1284 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_ALNUM); | |
1285 | for (value = 0; value < 256; value++) | |
1286 | if (isALNUM(value)) | |
1287 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1288 | } | |
1289 | } | |
1290 | else { | |
1291 | if (data->start_class->flags & ANYOF_LOCALE) | |
1292 | ANYOF_CLASS_SET(data->start_class,ANYOF_NALNUM); | |
1293 | else { | |
1294 | for (value = 0; value < 256; value++) | |
1295 | if (!isALNUM(value)) | |
b81d288d | 1296 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1297 | } |
1298 | } | |
1299 | break; | |
1300 | case NALNUML: | |
1301 | if (flags & SCF_DO_STCLASS_AND) { | |
1302 | if (data->start_class->flags & ANYOF_LOCALE) | |
1303 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_ALNUM); | |
1304 | } | |
1305 | else { | |
1306 | data->start_class->flags |= ANYOF_LOCALE; | |
1307 | ANYOF_CLASS_SET(data->start_class,ANYOF_NALNUM); | |
1308 | } | |
1309 | break; | |
1310 | case SPACE: | |
1311 | if (flags & SCF_DO_STCLASS_AND) { | |
1312 | if (!(data->start_class->flags & ANYOF_LOCALE)) { | |
1313 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NSPACE); | |
1314 | for (value = 0; value < 256; value++) | |
1315 | if (!isSPACE(value)) | |
1316 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1317 | } | |
1318 | } | |
1319 | else { | |
1320 | if (data->start_class->flags & ANYOF_LOCALE) | |
1321 | ANYOF_CLASS_SET(data->start_class,ANYOF_SPACE); | |
1322 | else { | |
1323 | for (value = 0; value < 256; value++) | |
1324 | if (isSPACE(value)) | |
b81d288d | 1325 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1326 | } |
1327 | } | |
1328 | break; | |
1329 | case SPACEL: | |
1330 | if (flags & SCF_DO_STCLASS_AND) { | |
1331 | if (data->start_class->flags & ANYOF_LOCALE) | |
1332 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NSPACE); | |
1333 | } | |
1334 | else { | |
1335 | data->start_class->flags |= ANYOF_LOCALE; | |
1336 | ANYOF_CLASS_SET(data->start_class,ANYOF_SPACE); | |
1337 | } | |
1338 | break; | |
1339 | case NSPACE: | |
1340 | if (flags & SCF_DO_STCLASS_AND) { | |
1341 | if (!(data->start_class->flags & ANYOF_LOCALE)) { | |
1342 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_SPACE); | |
1343 | for (value = 0; value < 256; value++) | |
1344 | if (isSPACE(value)) | |
1345 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1346 | } | |
1347 | } | |
1348 | else { | |
1349 | if (data->start_class->flags & ANYOF_LOCALE) | |
1350 | ANYOF_CLASS_SET(data->start_class,ANYOF_NSPACE); | |
1351 | else { | |
1352 | for (value = 0; value < 256; value++) | |
1353 | if (!isSPACE(value)) | |
b81d288d | 1354 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1355 | } |
1356 | } | |
1357 | break; | |
1358 | case NSPACEL: | |
1359 | if (flags & SCF_DO_STCLASS_AND) { | |
1360 | if (data->start_class->flags & ANYOF_LOCALE) { | |
1361 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_SPACE); | |
1362 | for (value = 0; value < 256; value++) | |
1363 | if (!isSPACE(value)) | |
1364 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1365 | } | |
1366 | } | |
1367 | else { | |
1368 | data->start_class->flags |= ANYOF_LOCALE; | |
1369 | ANYOF_CLASS_SET(data->start_class,ANYOF_NSPACE); | |
1370 | } | |
1371 | break; | |
1372 | case DIGIT: | |
1373 | if (flags & SCF_DO_STCLASS_AND) { | |
1374 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NDIGIT); | |
1375 | for (value = 0; value < 256; value++) | |
1376 | if (!isDIGIT(value)) | |
1377 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1378 | } | |
1379 | else { | |
1380 | if (data->start_class->flags & ANYOF_LOCALE) | |
1381 | ANYOF_CLASS_SET(data->start_class,ANYOF_DIGIT); | |
1382 | else { | |
1383 | for (value = 0; value < 256; value++) | |
1384 | if (isDIGIT(value)) | |
b81d288d | 1385 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1386 | } |
1387 | } | |
1388 | break; | |
1389 | case NDIGIT: | |
1390 | if (flags & SCF_DO_STCLASS_AND) { | |
1391 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_DIGIT); | |
1392 | for (value = 0; value < 256; value++) | |
1393 | if (isDIGIT(value)) | |
1394 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1395 | } | |
1396 | else { | |
1397 | if (data->start_class->flags & ANYOF_LOCALE) | |
1398 | ANYOF_CLASS_SET(data->start_class,ANYOF_NDIGIT); | |
1399 | else { | |
1400 | for (value = 0; value < 256; value++) | |
1401 | if (!isDIGIT(value)) | |
b81d288d | 1402 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1403 | } |
1404 | } | |
1405 | break; | |
1406 | } | |
1407 | if (flags & SCF_DO_STCLASS_OR) | |
1408 | cl_and(data->start_class, &and_with); | |
1409 | flags &= ~SCF_DO_STCLASS; | |
1410 | } | |
a0ed51b3 | 1411 | } |
22c35a8c | 1412 | else if (PL_regkind[(U8)OP(scan)] == EOL && flags & SCF_DO_SUBSTR) { |
c277df42 IZ |
1413 | data->flags |= (OP(scan) == MEOL |
1414 | ? SF_BEFORE_MEOL | |
1415 | : SF_BEFORE_SEOL); | |
a0ed51b3 | 1416 | } |
653099ff GS |
1417 | else if ( PL_regkind[(U8)OP(scan)] == BRANCHJ |
1418 | /* Lookbehind, or need to calculate parens/evals/stclass: */ | |
1419 | && (scan->flags || data || (flags & SCF_DO_STCLASS)) | |
c277df42 | 1420 | && (OP(scan) == IFMATCH || OP(scan) == UNLESSM)) { |
653099ff | 1421 | /* Lookahead/lookbehind */ |
cb434fcc | 1422 | I32 deltanext, minnext, fake = 0; |
c277df42 | 1423 | regnode *nscan; |
653099ff GS |
1424 | struct regnode_charclass_class intrnl; |
1425 | int f = 0; | |
c277df42 IZ |
1426 | |
1427 | data_fake.flags = 0; | |
b81d288d | 1428 | if (data) { |
2c2d71f5 | 1429 | data_fake.whilem_c = data->whilem_c; |
cb434fcc IZ |
1430 | data_fake.last_closep = data->last_closep; |
1431 | } | |
1432 | else | |
1433 | data_fake.last_closep = &fake; | |
653099ff GS |
1434 | if ( flags & SCF_DO_STCLASS && !scan->flags |
1435 | && OP(scan) == IFMATCH ) { /* Lookahead */ | |
830247a4 | 1436 | cl_init(pRExC_state, &intrnl); |
653099ff | 1437 | data_fake.start_class = &intrnl; |
e1901655 | 1438 | f |= SCF_DO_STCLASS_AND; |
653099ff | 1439 | } |
e1901655 IZ |
1440 | if (flags & SCF_WHILEM_VISITED_POS) |
1441 | f |= SCF_WHILEM_VISITED_POS; | |
c277df42 IZ |
1442 | next = regnext(scan); |
1443 | nscan = NEXTOPER(NEXTOPER(scan)); | |
830247a4 | 1444 | minnext = study_chunk(pRExC_state, &nscan, &deltanext, last, &data_fake, f); |
c277df42 IZ |
1445 | if (scan->flags) { |
1446 | if (deltanext) { | |
9baa0206 | 1447 | vFAIL("Variable length lookbehind not implemented"); |
a0ed51b3 LW |
1448 | } |
1449 | else if (minnext > U8_MAX) { | |
9baa0206 | 1450 | vFAIL2("Lookbehind longer than %"UVuf" not implemented", (UV)U8_MAX); |
c277df42 IZ |
1451 | } |
1452 | scan->flags = minnext; | |
1453 | } | |
1454 | if (data && data_fake.flags & (SF_HAS_PAR|SF_IN_PAR)) | |
1455 | pars++; | |
405ff068 | 1456 | if (data && (data_fake.flags & SF_HAS_EVAL)) |
c277df42 | 1457 | data->flags |= SF_HAS_EVAL; |
2c2d71f5 JH |
1458 | if (data) |
1459 | data->whilem_c = data_fake.whilem_c; | |
e1901655 | 1460 | if (f & SCF_DO_STCLASS_AND) { |
653099ff GS |
1461 | int was = (data->start_class->flags & ANYOF_EOS); |
1462 | ||
1463 | cl_and(data->start_class, &intrnl); | |
1464 | if (was) | |
1465 | data->start_class->flags |= ANYOF_EOS; | |
1466 | } | |
a0ed51b3 LW |
1467 | } |
1468 | else if (OP(scan) == OPEN) { | |
c277df42 | 1469 | pars++; |
a0ed51b3 | 1470 | } |
cb434fcc IZ |
1471 | else if (OP(scan) == CLOSE) { |
1472 | if (ARG(scan) == is_par) { | |
1473 | next = regnext(scan); | |
c277df42 | 1474 | |
cb434fcc IZ |
1475 | if ( next && (OP(next) != WHILEM) && next < last) |
1476 | is_par = 0; /* Disable optimization */ | |
1477 | } | |
1478 | if (data) | |
1479 | *(data->last_closep) = ARG(scan); | |
a0ed51b3 LW |
1480 | } |
1481 | else if (OP(scan) == EVAL) { | |
c277df42 IZ |
1482 | if (data) |
1483 | data->flags |= SF_HAS_EVAL; | |
1484 | } | |
96776eda | 1485 | else if (OP(scan) == LOGICAL && scan->flags == 2) { /* Embedded follows */ |
0f5d15d6 | 1486 | if (flags & SCF_DO_SUBSTR) { |
830247a4 | 1487 | scan_commit(pRExC_state,data); |
0f5d15d6 IZ |
1488 | data->longest = &(data->longest_float); |
1489 | } | |
1490 | is_inf = is_inf_internal = 1; | |
653099ff | 1491 | if (flags & SCF_DO_STCLASS_OR) /* Allow everything */ |
830247a4 | 1492 | cl_anything(pRExC_state, data->start_class); |
96776eda | 1493 | flags &= ~SCF_DO_STCLASS; |
0f5d15d6 | 1494 | } |
c277df42 IZ |
1495 | /* Else: zero-length, ignore. */ |
1496 | scan = regnext(scan); | |
1497 | } | |
1498 | ||
1499 | finish: | |
1500 | *scanp = scan; | |
aca2d497 | 1501 | *deltap = is_inf_internal ? I32_MAX : delta; |
b81d288d | 1502 | if (flags & SCF_DO_SUBSTR && is_inf) |
c277df42 IZ |
1503 | data->pos_delta = I32_MAX - data->pos_min; |
1504 | if (is_par > U8_MAX) | |
1505 | is_par = 0; | |
1506 | if (is_par && pars==1 && data) { | |
1507 | data->flags |= SF_IN_PAR; | |
1508 | data->flags &= ~SF_HAS_PAR; | |
a0ed51b3 LW |
1509 | } |
1510 | else if (pars && data) { | |
c277df42 IZ |
1511 | data->flags |= SF_HAS_PAR; |
1512 | data->flags &= ~SF_IN_PAR; | |
1513 | } | |
653099ff GS |
1514 | if (flags & SCF_DO_STCLASS_OR) |
1515 | cl_and(data->start_class, &and_with); | |
c277df42 IZ |
1516 | return min; |
1517 | } | |
1518 | ||
76e3520e | 1519 | STATIC I32 |
830247a4 | 1520 | S_add_data(pTHX_ RExC_state_t *pRExC_state, I32 n, char *s) |
c277df42 | 1521 | { |
830247a4 | 1522 | if (RExC_rx->data) { |
b81d288d AB |
1523 | Renewc(RExC_rx->data, |
1524 | sizeof(*RExC_rx->data) + sizeof(void*) * (RExC_rx->data->count + n - 1), | |
c277df42 | 1525 | char, struct reg_data); |
830247a4 IZ |
1526 | Renew(RExC_rx->data->what, RExC_rx->data->count + n, U8); |
1527 | RExC_rx->data->count += n; | |
a0ed51b3 LW |
1528 | } |
1529 | else { | |
830247a4 | 1530 | Newc(1207, RExC_rx->data, sizeof(*RExC_rx->data) + sizeof(void*) * (n - 1), |
c277df42 | 1531 | char, struct reg_data); |
830247a4 IZ |
1532 | New(1208, RExC_rx->data->what, n, U8); |
1533 | RExC_rx->data->count = n; | |
c277df42 | 1534 | } |
830247a4 IZ |
1535 | Copy(s, RExC_rx->data->what + RExC_rx->data->count - n, n, U8); |
1536 | return RExC_rx->data->count - n; | |
c277df42 IZ |
1537 | } |
1538 | ||
d88dccdf | 1539 | void |
864dbfa3 | 1540 | Perl_reginitcolors(pTHX) |
d88dccdf | 1541 | { |
d88dccdf IZ |
1542 | int i = 0; |
1543 | char *s = PerlEnv_getenv("PERL_RE_COLORS"); | |
b81d288d | 1544 | |
d88dccdf IZ |
1545 | if (s) { |
1546 | PL_colors[0] = s = savepv(s); | |
1547 | while (++i < 6) { | |
1548 | s = strchr(s, '\t'); | |
1549 | if (s) { | |
1550 | *s = '\0'; | |
1551 | PL_colors[i] = ++s; | |
1552 | } | |
1553 | else | |
c712d376 | 1554 | PL_colors[i] = s = ""; |
d88dccdf IZ |
1555 | } |
1556 | } else { | |
b81d288d | 1557 | while (i < 6) |
d88dccdf IZ |
1558 | PL_colors[i++] = ""; |
1559 | } | |
1560 | PL_colorset = 1; | |
1561 | } | |
1562 | ||
8615cb43 | 1563 | |
a687059c | 1564 | /* |
e50aee73 | 1565 | - pregcomp - compile a regular expression into internal code |
a687059c LW |
1566 | * |
1567 | * We can't allocate space until we know how big the compiled form will be, | |
1568 | * but we can't compile it (and thus know how big it is) until we've got a | |
1569 | * place to put the code. So we cheat: we compile it twice, once with code | |
1570 | * generation turned off and size counting turned on, and once "for real". | |
1571 | * This also means that we don't allocate space until we are sure that the | |
1572 | * thing really will compile successfully, and we never have to move the | |
1573 | * code and thus invalidate pointers into it. (Note that it has to be in | |
1574 | * one piece because free() must be able to free it all.) [NB: not true in perl] | |
1575 | * | |
1576 | * Beware that the optimization-preparation code in here knows about some | |
1577 | * of the structure of the compiled regexp. [I'll say.] | |
1578 | */ | |
1579 | regexp * | |
864dbfa3 | 1580 | Perl_pregcomp(pTHX_ char *exp, char *xend, PMOP *pm) |
a687059c | 1581 | { |
a0d0e21e | 1582 | register regexp *r; |
c277df42 | 1583 | regnode *scan; |
c277df42 | 1584 | regnode *first; |
a0d0e21e | 1585 | I32 flags; |
a0d0e21e LW |
1586 | I32 minlen = 0; |
1587 | I32 sawplus = 0; | |
1588 | I32 sawopen = 0; | |
2c2d71f5 | 1589 | scan_data_t data; |
830247a4 IZ |
1590 | RExC_state_t RExC_state; |
1591 | RExC_state_t *pRExC_state = &RExC_state; | |
a0d0e21e LW |
1592 | |
1593 | if (exp == NULL) | |
c277df42 | 1594 | FAIL("NULL regexp argument"); |
a0d0e21e | 1595 | |
830247a4 | 1596 | /* XXXX This looks very suspicious... */ |
1aa99e6b IH |
1597 | if (pm->op_pmdynflags & PMdf_CMP_UTF8) |
1598 | RExC_utf8 = 1; | |
a0ed51b3 | 1599 | else |
1aa99e6b | 1600 | RExC_utf8 = 0; |
a0ed51b3 | 1601 | |
830247a4 | 1602 | RExC_precomp = savepvn(exp, xend - exp); |
35ef4773 | 1603 | DEBUG_r(if (!PL_colorset) reginitcolors()); |
2c2d71f5 | 1604 | DEBUG_r(PerlIO_printf(Perl_debug_log, "%sCompiling REx%s `%s%*s%s'\n", |
d88dccdf | 1605 | PL_colors[4],PL_colors[5],PL_colors[0], |
830247a4 IZ |
1606 | (int)(xend - exp), RExC_precomp, PL_colors[1])); |
1607 | RExC_flags16 = pm->op_pmflags; | |
1608 | RExC_sawback = 0; | |
bbce6d69 | 1609 | |
830247a4 IZ |
1610 | RExC_seen = 0; |
1611 | RExC_seen_zerolen = *exp == '^' ? -1 : 0; | |
1612 | RExC_seen_evals = 0; | |
1613 | RExC_extralen = 0; | |
c277df42 | 1614 | |
bbce6d69 | 1615 | /* First pass: determine size, legality. */ |
830247a4 IZ |
1616 | RExC_parse = exp; |
1617 | RExC_end = xend; | |
1618 | RExC_naughty = 0; | |
1619 | RExC_npar = 1; | |
1620 | RExC_size = 0L; | |
1621 | RExC_emit = &PL_regdummy; | |
1622 | RExC_whilem_seen = 0; | |
85ddcde9 JH |
1623 | #if 0 /* REGC() is (currently) a NOP at the first pass. |
1624 | * Clever compilers notice this and complain. --jhi */ | |
830247a4 | 1625 | REGC((U8)REG_MAGIC, (char*)RExC_emit); |
85ddcde9 | 1626 | #endif |
830247a4 IZ |
1627 | if (reg(pRExC_state, 0, &flags) == NULL) { |
1628 | Safefree(RExC_precomp); | |
1629 | RExC_precomp = Nullch; | |
a0d0e21e LW |
1630 | return(NULL); |
1631 | } | |
830247a4 | 1632 | DEBUG_r(PerlIO_printf(Perl_debug_log, "size %"IVdf" ", (IV)RExC_size)); |
c277df42 | 1633 | |
c277df42 IZ |
1634 | /* Small enough for pointer-storage convention? |
1635 | If extralen==0, this means that we will not need long jumps. */ | |
830247a4 IZ |
1636 | if (RExC_size >= 0x10000L && RExC_extralen) |
1637 | RExC_size += RExC_extralen; | |
c277df42 | 1638 | else |
830247a4 IZ |
1639 | RExC_extralen = 0; |
1640 | if (RExC_whilem_seen > 15) | |
1641 | RExC_whilem_seen = 15; | |
a0d0e21e | 1642 | |
bbce6d69 | 1643 | /* Allocate space and initialize. */ |
830247a4 | 1644 | Newc(1001, r, sizeof(regexp) + (unsigned)RExC_size * sizeof(regnode), |
c277df42 | 1645 | char, regexp); |
a0d0e21e | 1646 | if (r == NULL) |
b45f050a JF |
1647 | FAIL("Regexp out of space"); |
1648 | ||
0f79a09d GS |
1649 | #ifdef DEBUGGING |
1650 | /* avoid reading uninitialized memory in DEBUGGING code in study_chunk() */ | |
830247a4 | 1651 | Zero(r, sizeof(regexp) + (unsigned)RExC_size * sizeof(regnode), char); |
0f79a09d | 1652 | #endif |
c277df42 | 1653 | r->refcnt = 1; |
bbce6d69 | 1654 | r->prelen = xend - exp; |
830247a4 | 1655 | r->precomp = RExC_precomp; |
cf93c79d IZ |
1656 | r->subbeg = NULL; |
1657 | r->reganch = pm->op_pmflags & PMf_COMPILETIME; | |
830247a4 | 1658 | r->nparens = RExC_npar - 1; /* set early to validate backrefs */ |
4327152a IZ |
1659 | |
1660 | r->substrs = 0; /* Useful during FAIL. */ | |
1661 | r->startp = 0; /* Useful during FAIL. */ | |
1662 | r->endp = 0; /* Useful during FAIL. */ | |
1663 | ||
830247a4 | 1664 | RExC_rx = r; |
bbce6d69 | 1665 | |
1666 | /* Second pass: emit code. */ | |
830247a4 IZ |
1667 | RExC_parse = exp; |
1668 | RExC_end = xend; | |
1669 | RExC_naughty = 0; | |
1670 | RExC_npar = 1; | |
1671 | RExC_emit = r->program; | |
2cd61cdb | 1672 | /* Store the count of eval-groups for security checks: */ |
830247a4 IZ |
1673 | RExC_emit->next_off = ((RExC_seen_evals > U16_MAX) ? U16_MAX : RExC_seen_evals); |
1674 | REGC((U8)REG_MAGIC, (char*) RExC_emit++); | |
c277df42 | 1675 | r->data = 0; |
830247a4 | 1676 | if (reg(pRExC_state, 0, &flags) == NULL) |
a0d0e21e LW |
1677 | return(NULL); |
1678 | ||
1679 | /* Dig out information for optimizations. */ | |
cf93c79d | 1680 | r->reganch = pm->op_pmflags & PMf_COMPILETIME; /* Again? */ |
830247a4 | 1681 | pm->op_pmflags = RExC_flags16; |
a0ed51b3 LW |
1682 | if (UTF) |
1683 | r->reganch |= ROPT_UTF8; | |
c277df42 | 1684 | r->regstclass = NULL; |
830247a4 | 1685 | if (RExC_naughty >= 10) /* Probably an expensive pattern. */ |
a0ed51b3 | 1686 | r->reganch |= ROPT_NAUGHTY; |
c277df42 | 1687 | scan = r->program + 1; /* First BRANCH. */ |
2779dcf1 IZ |
1688 | |
1689 | /* XXXX To minimize changes to RE engine we always allocate | |
1690 | 3-units-long substrs field. */ | |
1691 | Newz(1004, r->substrs, 1, struct reg_substr_data); | |
1692 | ||
2c2d71f5 | 1693 | StructCopy(&zero_scan_data, &data, scan_data_t); |
653099ff | 1694 | /* XXXX Should not we check for something else? Usually it is OPEN1... */ |
c277df42 | 1695 | if (OP(scan) != BRANCH) { /* Only one top-level choice. */ |
c277df42 | 1696 | I32 fake; |
c5254dd6 | 1697 | STRLEN longest_float_length, longest_fixed_length; |
653099ff GS |
1698 | struct regnode_charclass_class ch_class; |
1699 | int stclass_flag; | |
cb434fcc | 1700 | I32 last_close = 0; |
a0d0e21e LW |
1701 | |
1702 | first = scan; | |
c277df42 | 1703 | /* Skip introductions and multiplicators >= 1. */ |
a0d0e21e | 1704 | while ((OP(first) == OPEN && (sawopen = 1)) || |
653099ff | 1705 | /* An OR of *one* alternative - should not happen now. */ |
a0d0e21e LW |
1706 | (OP(first) == BRANCH && OP(regnext(first)) != BRANCH) || |
1707 | (OP(first) == PLUS) || | |
1708 | (OP(first) == MINMOD) || | |
653099ff | 1709 | /* An {n,m} with n>0 */ |
22c35a8c | 1710 | (PL_regkind[(U8)OP(first)] == CURLY && ARG1(first) > 0) ) { |
a0d0e21e LW |
1711 | if (OP(first) == PLUS) |
1712 | sawplus = 1; | |
1713 | else | |
1714 | first += regarglen[(U8)OP(first)]; | |
1715 | first = NEXTOPER(first); | |
a687059c LW |
1716 | } |
1717 | ||
a0d0e21e LW |
1718 | /* Starting-point info. */ |
1719 | again: | |
653099ff | 1720 | if (PL_regkind[(U8)OP(first)] == EXACT) { |
1aa99e6b IH |
1721 | if (OP(first) == EXACT) |
1722 | ; /* Empty, get anchored substr later. */ | |
1723 | else if ((OP(first) == EXACTF || OP(first) == EXACTFL)) | |
b3c9acc1 IZ |
1724 | r->regstclass = first; |
1725 | } | |
653099ff | 1726 | else if (strchr((char*)PL_simple,OP(first))) |
a0d0e21e | 1727 | r->regstclass = first; |
22c35a8c GS |
1728 | else if (PL_regkind[(U8)OP(first)] == BOUND || |
1729 | PL_regkind[(U8)OP(first)] == NBOUND) | |
a0d0e21e | 1730 | r->regstclass = first; |
22c35a8c | 1731 | else if (PL_regkind[(U8)OP(first)] == BOL) { |
cad2e5aa JH |
1732 | r->reganch |= (OP(first) == MBOL |
1733 | ? ROPT_ANCH_MBOL | |
1734 | : (OP(first) == SBOL | |
1735 | ? ROPT_ANCH_SBOL | |
1736 | : ROPT_ANCH_BOL)); | |
a0d0e21e | 1737 | first = NEXTOPER(first); |
774d564b | 1738 | goto again; |
1739 | } | |
1740 | else if (OP(first) == GPOS) { | |
1741 | r->reganch |= ROPT_ANCH_GPOS; | |
1742 | first = NEXTOPER(first); | |
1743 | goto again; | |
a0d0e21e LW |
1744 | } |
1745 | else if ((OP(first) == STAR && | |
22c35a8c | 1746 | PL_regkind[(U8)OP(NEXTOPER(first))] == REG_ANY) && |
a0d0e21e LW |
1747 | !(r->reganch & ROPT_ANCH) ) |
1748 | { | |
1749 | /* turn .* into ^.* with an implied $*=1 */ | |
cad2e5aa JH |
1750 | int type = OP(NEXTOPER(first)); |
1751 | ||
ffc61ed2 | 1752 | if (type == REG_ANY) |
cad2e5aa JH |
1753 | type = ROPT_ANCH_MBOL; |
1754 | else | |
1755 | type = ROPT_ANCH_SBOL; | |
1756 | ||
1757 | r->reganch |= type | ROPT_IMPLICIT; | |
a0d0e21e | 1758 | first = NEXTOPER(first); |
774d564b | 1759 | goto again; |
a0d0e21e | 1760 | } |
b81d288d | 1761 | if (sawplus && (!sawopen || !RExC_sawback) |
830247a4 | 1762 | && !(RExC_seen & REG_SEEN_EVAL)) /* May examine pos and $& */ |
cad2e5aa JH |
1763 | /* x+ must match at the 1st pos of run of x's */ |
1764 | r->reganch |= ROPT_SKIP; | |
a0d0e21e | 1765 | |
c277df42 | 1766 | /* Scan is after the zeroth branch, first is atomic matcher. */ |
b81d288d | 1767 | DEBUG_r(PerlIO_printf(Perl_debug_log, "first at %"IVdf"\n", |
b900a521 | 1768 | (IV)(first - scan + 1))); |
a0d0e21e LW |
1769 | /* |
1770 | * If there's something expensive in the r.e., find the | |
1771 | * longest literal string that must appear and make it the | |
1772 | * regmust. Resolve ties in favor of later strings, since | |
1773 | * the regstart check works with the beginning of the r.e. | |
1774 | * and avoiding duplication strengthens checking. Not a | |
1775 | * strong reason, but sufficient in the absence of others. | |
1776 | * [Now we resolve ties in favor of the earlier string if | |
c277df42 | 1777 | * it happens that c_offset_min has been invalidated, since the |
a0d0e21e LW |
1778 | * earlier string may buy us something the later one won't.] |
1779 | */ | |
a0d0e21e | 1780 | minlen = 0; |
a687059c | 1781 | |
79cb57f6 GS |
1782 | data.longest_fixed = newSVpvn("",0); |
1783 | data.longest_float = newSVpvn("",0); | |
1784 | data.last_found = newSVpvn("",0); | |
c277df42 IZ |
1785 | data.longest = &(data.longest_fixed); |
1786 | first = scan; | |
653099ff | 1787 | if (!r->regstclass) { |
830247a4 | 1788 | cl_init(pRExC_state, &ch_class); |
653099ff GS |
1789 | data.start_class = &ch_class; |
1790 | stclass_flag = SCF_DO_STCLASS_AND; | |
1791 | } else /* XXXX Check for BOUND? */ | |
1792 | stclass_flag = 0; | |
cb434fcc | 1793 | data.last_closep = &last_close; |
653099ff | 1794 | |
830247a4 | 1795 | minlen = study_chunk(pRExC_state, &first, &fake, scan + RExC_size, /* Up to end */ |
e1901655 | 1796 | &data, SCF_DO_SUBSTR | SCF_WHILEM_VISITED_POS | stclass_flag); |
830247a4 | 1797 | if ( RExC_npar == 1 && data.longest == &(data.longest_fixed) |
b81d288d | 1798 | && data.last_start_min == 0 && data.last_end > 0 |
830247a4 IZ |
1799 | && !RExC_seen_zerolen |
1800 | && (!(RExC_seen & REG_SEEN_GPOS) || (r->reganch & ROPT_ANCH_GPOS))) | |
c277df42 | 1801 | r->reganch |= ROPT_CHECK_ALL; |
830247a4 | 1802 | scan_commit(pRExC_state, &data); |
c277df42 IZ |
1803 | SvREFCNT_dec(data.last_found); |
1804 | ||
a0ed51b3 | 1805 | longest_float_length = CHR_SVLEN(data.longest_float); |
c5254dd6 | 1806 | if (longest_float_length |
c277df42 IZ |
1807 | || (data.flags & SF_FL_BEFORE_EOL |
1808 | && (!(data.flags & SF_FL_BEFORE_MEOL) | |
830247a4 | 1809 | || (RExC_flags16 & PMf_MULTILINE)))) { |
cf93c79d IZ |
1810 | int t; |
1811 | ||
a0ed51b3 | 1812 | if (SvCUR(data.longest_fixed) /* ok to leave SvCUR */ |
aca2d497 IZ |
1813 | && data.offset_fixed == data.offset_float_min |
1814 | && SvCUR(data.longest_fixed) == SvCUR(data.longest_float)) | |
1815 | goto remove_float; /* As in (a)+. */ | |
1816 | ||
c277df42 IZ |
1817 | r->float_substr = data.longest_float; |
1818 | r->float_min_offset = data.offset_float_min; | |
1819 | r->float_max_offset = data.offset_float_max; | |
cf93c79d IZ |
1820 | t = (data.flags & SF_FL_BEFORE_EOL /* Can't have SEOL and MULTI */ |
1821 | && (!(data.flags & SF_FL_BEFORE_MEOL) | |
830247a4 | 1822 | || (RExC_flags16 & PMf_MULTILINE))); |
cf93c79d | 1823 | fbm_compile(r->float_substr, t ? FBMcf_TAIL : 0); |
a0ed51b3 LW |
1824 | } |
1825 | else { | |
aca2d497 | 1826 | remove_float: |
c277df42 IZ |
1827 | r->float_substr = Nullsv; |
1828 | SvREFCNT_dec(data.longest_float); | |
c5254dd6 | 1829 | longest_float_length = 0; |
a0d0e21e | 1830 | } |
c277df42 | 1831 | |
a0ed51b3 | 1832 | longest_fixed_length = CHR_SVLEN(data.longest_fixed); |
c5254dd6 | 1833 | if (longest_fixed_length |
c277df42 IZ |
1834 | || (data.flags & SF_FIX_BEFORE_EOL /* Cannot have SEOL and MULTI */ |
1835 | && (!(data.flags & SF_FIX_BEFORE_MEOL) | |
830247a4 | 1836 | || (RExC_flags16 & PMf_MULTILINE)))) { |
cf93c79d IZ |
1837 | int t; |
1838 | ||
c277df42 IZ |
1839 | r->anchored_substr = data.longest_fixed; |
1840 | r->anchored_offset = data.offset_fixed; | |
cf93c79d IZ |
1841 | t = (data.flags & SF_FIX_BEFORE_EOL /* Can't have SEOL and MULTI */ |
1842 | && (!(data.flags & SF_FIX_BEFORE_MEOL) | |
830247a4 | 1843 | || (RExC_flags16 & PMf_MULTILINE))); |
cf93c79d | 1844 | fbm_compile(r->anchored_substr, t ? FBMcf_TAIL : 0); |
a0ed51b3 LW |
1845 | } |
1846 | else { | |
c277df42 IZ |
1847 | r->anchored_substr = Nullsv; |
1848 | SvREFCNT_dec(data.longest_fixed); | |
c5254dd6 | 1849 | longest_fixed_length = 0; |
a0d0e21e | 1850 | } |
b81d288d | 1851 | if (r->regstclass |
ffc61ed2 | 1852 | && (OP(r->regstclass) == REG_ANY || OP(r->regstclass) == SANY)) |
653099ff GS |
1853 | r->regstclass = NULL; |
1854 | if ((!r->anchored_substr || r->anchored_offset) && stclass_flag | |
1855 | && !(data.start_class->flags & ANYOF_EOS) | |
1856 | && !cl_is_anything(data.start_class)) { | |
1857 | SV *sv; | |
830247a4 | 1858 | I32 n = add_data(pRExC_state, 1, "f"); |
653099ff | 1859 | |
b81d288d | 1860 | New(1006, RExC_rx->data->data[n], 1, |
653099ff GS |
1861 | struct regnode_charclass_class); |
1862 | StructCopy(data.start_class, | |
830247a4 | 1863 | (struct regnode_charclass_class*)RExC_rx->data->data[n], |
653099ff | 1864 | struct regnode_charclass_class); |
830247a4 | 1865 | r->regstclass = (regnode*)RExC_rx->data->data[n]; |
653099ff | 1866 | r->reganch &= ~ROPT_SKIP; /* Used in find_byclass(). */ |
ffc61ed2 | 1867 | PL_regdata = r->data; /* for regprop() */ |
653099ff GS |
1868 | DEBUG_r((sv = sv_newmortal(), |
1869 | regprop(sv, (regnode*)data.start_class), | |
894356b3 | 1870 | PerlIO_printf(Perl_debug_log, "synthetic stclass `%s'.\n", |
653099ff GS |
1871 | SvPVX(sv)))); |
1872 | } | |
c277df42 IZ |
1873 | |
1874 | /* A temporary algorithm prefers floated substr to fixed one to dig more info. */ | |
c5254dd6 | 1875 | if (longest_fixed_length > longest_float_length) { |
c277df42 IZ |
1876 | r->check_substr = r->anchored_substr; |
1877 | r->check_offset_min = r->check_offset_max = r->anchored_offset; | |
1878 | if (r->reganch & ROPT_ANCH_SINGLE) | |
1879 | r->reganch |= ROPT_NOSCAN; | |
a0ed51b3 LW |
1880 | } |
1881 | else { | |
c277df42 IZ |
1882 | r->check_substr = r->float_substr; |
1883 | r->check_offset_min = data.offset_float_min; | |
1884 | r->check_offset_max = data.offset_float_max; | |
a0d0e21e | 1885 | } |
30382c73 IZ |
1886 | /* XXXX Currently intuiting is not compatible with ANCH_GPOS. |
1887 | This should be changed ASAP! */ | |
1888 | if (r->check_substr && !(r->reganch & ROPT_ANCH_GPOS)) { | |
cad2e5aa JH |
1889 | r->reganch |= RE_USE_INTUIT; |
1890 | if (SvTAIL(r->check_substr)) | |
1891 | r->reganch |= RE_INTUIT_TAIL; | |
1892 | } | |
a0ed51b3 LW |
1893 | } |
1894 | else { | |
c277df42 IZ |
1895 | /* Several toplevels. Best we can is to set minlen. */ |
1896 | I32 fake; | |
653099ff | 1897 | struct regnode_charclass_class ch_class; |
cb434fcc | 1898 | I32 last_close = 0; |
c277df42 IZ |
1899 | |
1900 | DEBUG_r(PerlIO_printf(Perl_debug_log, "\n")); | |
1901 | scan = r->program + 1; | |
830247a4 | 1902 | cl_init(pRExC_state, &ch_class); |
653099ff | 1903 | data.start_class = &ch_class; |
cb434fcc | 1904 | data.last_closep = &last_close; |
e1901655 | 1905 | minlen = study_chunk(pRExC_state, &scan, &fake, scan + RExC_size, &data, SCF_DO_STCLASS_AND|SCF_WHILEM_VISITED_POS); |
c277df42 | 1906 | r->check_substr = r->anchored_substr = r->float_substr = Nullsv; |
653099ff GS |
1907 | if (!(data.start_class->flags & ANYOF_EOS) |
1908 | && !cl_is_anything(data.start_class)) { | |
1909 | SV *sv; | |
830247a4 | 1910 | I32 n = add_data(pRExC_state, 1, "f"); |
653099ff | 1911 | |
b81d288d | 1912 | New(1006, RExC_rx->data->data[n], 1, |
653099ff GS |
1913 | struct regnode_charclass_class); |
1914 | StructCopy(data.start_class, | |
830247a4 | 1915 | (struct regnode_charclass_class*)RExC_rx->data->data[n], |
653099ff | 1916 | struct regnode_charclass_class); |
830247a4 | 1917 | r->regstclass = (regnode*)RExC_rx->data->data[n]; |
653099ff GS |
1918 | r->reganch &= ~ROPT_SKIP; /* Used in find_byclass(). */ |
1919 | DEBUG_r((sv = sv_newmortal(), | |
1920 | regprop(sv, (regnode*)data.start_class), | |
894356b3 | 1921 | PerlIO_printf(Perl_debug_log, "synthetic stclass `%s'.\n", |
653099ff GS |
1922 | SvPVX(sv)))); |
1923 | } | |
a0d0e21e LW |
1924 | } |
1925 | ||
a0d0e21e | 1926 | r->minlen = minlen; |
b81d288d | 1927 | if (RExC_seen & REG_SEEN_GPOS) |
c277df42 | 1928 | r->reganch |= ROPT_GPOS_SEEN; |
830247a4 | 1929 | if (RExC_seen & REG_SEEN_LOOKBEHIND) |
c277df42 | 1930 | r->reganch |= ROPT_LOOKBEHIND_SEEN; |
830247a4 | 1931 | if (RExC_seen & REG_SEEN_EVAL) |
ce862d02 | 1932 | r->reganch |= ROPT_EVAL_SEEN; |
830247a4 IZ |
1933 | Newz(1002, r->startp, RExC_npar, I32); |
1934 | Newz(1002, r->endp, RExC_npar, I32); | |
ffc61ed2 | 1935 | PL_regdata = r->data; /* for regprop() */ |
a0d0e21e LW |
1936 | DEBUG_r(regdump(r)); |
1937 | return(r); | |
a687059c LW |
1938 | } |
1939 | ||
1940 | /* | |
1941 | - reg - regular expression, i.e. main body or parenthesized thing | |
1942 | * | |
1943 | * Caller must absorb opening parenthesis. | |
1944 | * | |
1945 | * Combining parenthesis handling with the base level of regular expression | |
1946 | * is a trifle forced, but the need to tie the tails of the branches to what | |
1947 | * follows makes it hard to avoid. | |
1948 | */ | |
76e3520e | 1949 | STATIC regnode * |
830247a4 | 1950 | S_reg(pTHX_ RExC_state_t *pRExC_state, I32 paren, I32 *flagp) |
c277df42 | 1951 | /* paren: Parenthesized? 0=top, 1=(, inside: changed to letter. */ |
a687059c | 1952 | { |
c277df42 IZ |
1953 | register regnode *ret; /* Will be the head of the group. */ |
1954 | register regnode *br; | |
1955 | register regnode *lastbr; | |
1956 | register regnode *ender = 0; | |
a0d0e21e | 1957 | register I32 parno = 0; |
830247a4 IZ |
1958 | I32 flags, oregflags = RExC_flags16, have_branch = 0, open = 0; |
1959 | char *oregcomp_parse = RExC_parse; | |
c277df42 | 1960 | char c; |
a0d0e21e | 1961 | |
821b33a5 | 1962 | *flagp = 0; /* Tentatively. */ |
a0d0e21e LW |
1963 | |
1964 | /* Make an OPEN node, if parenthesized. */ | |
1965 | if (paren) { | |
830247a4 | 1966 | if (*RExC_parse == '?') { |
ca9dfc88 IZ |
1967 | U16 posflags = 0, negflags = 0; |
1968 | U16 *flagsp = &posflags; | |
0f5d15d6 | 1969 | int logical = 0; |
830247a4 | 1970 | char *seqstart = RExC_parse; |
ca9dfc88 | 1971 | |
830247a4 IZ |
1972 | RExC_parse++; |
1973 | paren = *RExC_parse++; | |
c277df42 | 1974 | ret = NULL; /* For look-ahead/behind. */ |
a0d0e21e | 1975 | switch (paren) { |
c277df42 | 1976 | case '<': |
830247a4 | 1977 | RExC_seen |= REG_SEEN_LOOKBEHIND; |
b81d288d | 1978 | if (*RExC_parse == '!') |
c277df42 | 1979 | paren = ','; |
b81d288d | 1980 | if (*RExC_parse != '=' && *RExC_parse != '!') |
c277df42 | 1981 | goto unknown; |
830247a4 | 1982 | RExC_parse++; |
a0d0e21e LW |
1983 | case '=': |
1984 | case '!': | |
830247a4 | 1985 | RExC_seen_zerolen++; |
c277df42 IZ |
1986 | case ':': |
1987 | case '>': | |
a0d0e21e LW |
1988 | break; |
1989 | case '$': | |
1990 | case '@': | |
8615cb43 | 1991 | vFAIL2("Sequence (?%c...) not implemented", (int)paren); |
a0d0e21e LW |
1992 | break; |
1993 | case '#': | |
830247a4 IZ |
1994 | while (*RExC_parse && *RExC_parse != ')') |
1995 | RExC_parse++; | |
1996 | if (*RExC_parse != ')') | |
c277df42 | 1997 | FAIL("Sequence (?#... not terminated"); |
830247a4 | 1998 | nextchar(pRExC_state); |
a0d0e21e LW |
1999 | *flagp = TRYAGAIN; |
2000 | return NULL; | |
8c8ad484 | 2001 | case 'p': |
d7e9e385 | 2002 | if (SIZE_ONLY) |
830247a4 | 2003 | vWARN(RExC_parse, "(?p{}) is deprecated - use (??{})"); |
8c8ad484 | 2004 | /* FALL THROUGH*/ |
14455d6c | 2005 | case '?': |
0f5d15d6 | 2006 | logical = 1; |
830247a4 | 2007 | paren = *RExC_parse++; |
0f5d15d6 | 2008 | /* FALL THROUGH */ |
c277df42 IZ |
2009 | case '{': |
2010 | { | |
c277df42 IZ |
2011 | I32 count = 1, n = 0; |
2012 | char c; | |
830247a4 | 2013 | char *s = RExC_parse; |
c277df42 IZ |
2014 | SV *sv; |
2015 | OP_4tree *sop, *rop; | |
2016 | ||
830247a4 IZ |
2017 | RExC_seen_zerolen++; |
2018 | RExC_seen |= REG_SEEN_EVAL; | |
2019 | while (count && (c = *RExC_parse)) { | |
2020 | if (c == '\\' && RExC_parse[1]) | |
2021 | RExC_parse++; | |
b81d288d | 2022 | else if (c == '{') |
c277df42 | 2023 | count++; |
b81d288d | 2024 | else if (c == '}') |
c277df42 | 2025 | count--; |
830247a4 | 2026 | RExC_parse++; |
c277df42 | 2027 | } |
830247a4 | 2028 | if (*RExC_parse != ')') |
b45f050a | 2029 | { |
b81d288d | 2030 | RExC_parse = s; |
b45f050a JF |
2031 | vFAIL("Sequence (?{...}) not terminated or not {}-balanced"); |
2032 | } | |
c277df42 IZ |
2033 | if (!SIZE_ONLY) { |
2034 | AV *av; | |
b81d288d AB |
2035 | |
2036 | if (RExC_parse - 1 - s) | |
830247a4 | 2037 | sv = newSVpvn(s, RExC_parse - 1 - s); |
c277df42 | 2038 | else |
79cb57f6 | 2039 | sv = newSVpvn("", 0); |
c277df42 | 2040 | |
569233ed SB |
2041 | ENTER; |
2042 | Perl_save_re_context(aTHX); | |
c277df42 | 2043 | rop = sv_compile_2op(sv, &sop, "re", &av); |
569233ed | 2044 | LEAVE; |
c277df42 | 2045 | |
830247a4 IZ |
2046 | n = add_data(pRExC_state, 3, "nop"); |
2047 | RExC_rx->data->data[n] = (void*)rop; | |
2048 | RExC_rx->data->data[n+1] = (void*)sop; | |
2049 | RExC_rx->data->data[n+2] = (void*)av; | |
c277df42 | 2050 | SvREFCNT_dec(sv); |
a0ed51b3 | 2051 | } |
e24b16f9 | 2052 | else { /* First pass */ |
830247a4 | 2053 | if (PL_reginterp_cnt < ++RExC_seen_evals |
e24b16f9 | 2054 | && PL_curcop != &PL_compiling) |
2cd61cdb IZ |
2055 | /* No compiled RE interpolated, has runtime |
2056 | components ===> unsafe. */ | |
2057 | FAIL("Eval-group not allowed at runtime, use re 'eval'"); | |
3280af22 | 2058 | if (PL_tainted) |
cc6b7395 | 2059 | FAIL("Eval-group in insecure regular expression"); |
c277df42 IZ |
2060 | } |
2061 | ||
830247a4 | 2062 | nextchar(pRExC_state); |
0f5d15d6 | 2063 | if (logical) { |
830247a4 | 2064 | ret = reg_node(pRExC_state, LOGICAL); |
0f5d15d6 IZ |
2065 | if (!SIZE_ONLY) |
2066 | ret->flags = 2; | |
830247a4 | 2067 | regtail(pRExC_state, ret, reganode(pRExC_state, EVAL, n)); |
0f5d15d6 IZ |
2068 | return ret; |
2069 | } | |
830247a4 | 2070 | return reganode(pRExC_state, EVAL, n); |
c277df42 IZ |
2071 | } |
2072 | case '(': | |
2073 | { | |
830247a4 | 2074 | if (RExC_parse[0] == '?') { |
b81d288d AB |
2075 | if (RExC_parse[1] == '=' || RExC_parse[1] == '!' |
2076 | || RExC_parse[1] == '<' | |
830247a4 | 2077 | || RExC_parse[1] == '{') { /* Lookahead or eval. */ |
c277df42 IZ |
2078 | I32 flag; |
2079 | ||
830247a4 | 2080 | ret = reg_node(pRExC_state, LOGICAL); |
0f5d15d6 IZ |
2081 | if (!SIZE_ONLY) |
2082 | ret->flags = 1; | |
830247a4 | 2083 | regtail(pRExC_state, ret, reg(pRExC_state, 1, &flag)); |
c277df42 | 2084 | goto insert_if; |
b81d288d | 2085 | } |
a0ed51b3 | 2086 | } |
830247a4 IZ |
2087 | else if (RExC_parse[0] >= '1' && RExC_parse[0] <= '9' ) { |
2088 | parno = atoi(RExC_parse++); | |
c277df42 | 2089 | |
830247a4 IZ |
2090 | while (isDIGIT(*RExC_parse)) |
2091 | RExC_parse++; | |
2092 | ret = reganode(pRExC_state, GROUPP, parno); | |
2093 | if ((c = *nextchar(pRExC_state)) != ')') | |
b45f050a | 2094 | vFAIL("Switch condition not recognized"); |
c277df42 | 2095 | insert_if: |
830247a4 IZ |
2096 | regtail(pRExC_state, ret, reganode(pRExC_state, IFTHEN, 0)); |
2097 | br = regbranch(pRExC_state, &flags, 1); | |
c277df42 | 2098 | if (br == NULL) |
830247a4 | 2099 | br = reganode(pRExC_state, LONGJMP, 0); |
c277df42 | 2100 | else |
830247a4 IZ |
2101 | regtail(pRExC_state, br, reganode(pRExC_state, LONGJMP, 0)); |
2102 | c = *nextchar(pRExC_state); | |
d1b80229 IZ |
2103 | if (flags&HASWIDTH) |
2104 | *flagp |= HASWIDTH; | |
c277df42 | 2105 | if (c == '|') { |
830247a4 IZ |
2106 | lastbr = reganode(pRExC_state, IFTHEN, 0); /* Fake one for optimizer. */ |
2107 | regbranch(pRExC_state, &flags, 1); | |
2108 | regtail(pRExC_state, ret, lastbr); | |
d1b80229 IZ |
2109 | if (flags&HASWIDTH) |
2110 | *flagp |= HASWIDTH; | |
830247a4 | 2111 | c = *nextchar(pRExC_state); |
a0ed51b3 LW |
2112 | } |
2113 | else | |
c277df42 IZ |
2114 | lastbr = NULL; |
2115 | if (c != ')') | |
8615cb43 | 2116 | vFAIL("Switch (?(condition)... contains too many branches"); |
830247a4 IZ |
2117 | ender = reg_node(pRExC_state, TAIL); |
2118 | regtail(pRExC_state, br, ender); | |
c277df42 | 2119 | if (lastbr) { |
830247a4 IZ |
2120 | regtail(pRExC_state, lastbr, ender); |
2121 | regtail(pRExC_state, NEXTOPER(NEXTOPER(lastbr)), ender); | |
a0ed51b3 LW |
2122 | } |
2123 | else | |
830247a4 | 2124 | regtail(pRExC_state, ret, ender); |
c277df42 | 2125 | return ret; |
a0ed51b3 LW |
2126 | } |
2127 | else { | |
830247a4 | 2128 | vFAIL2("Unknown switch condition (?(%.2s", RExC_parse); |
c277df42 IZ |
2129 | } |
2130 | } | |
1b1626e4 | 2131 | case 0: |
830247a4 | 2132 | RExC_parse--; /* for vFAIL to print correctly */ |
8615cb43 | 2133 | vFAIL("Sequence (? incomplete"); |
1b1626e4 | 2134 | break; |
a0d0e21e | 2135 | default: |
830247a4 | 2136 | --RExC_parse; |
ca9dfc88 | 2137 | parse_flags: |
830247a4 IZ |
2138 | while (*RExC_parse && strchr("iogcmsx", *RExC_parse)) { |
2139 | if (*RExC_parse != 'o') | |
2140 | pmflag(flagsp, *RExC_parse); | |
2141 | ++RExC_parse; | |
ca9dfc88 | 2142 | } |
830247a4 | 2143 | if (*RExC_parse == '-') { |
ca9dfc88 | 2144 | flagsp = &negflags; |
830247a4 | 2145 | ++RExC_parse; |
ca9dfc88 | 2146 | goto parse_flags; |
48c036b1 | 2147 | } |
830247a4 IZ |
2148 | RExC_flags16 |= posflags; |
2149 | RExC_flags16 &= ~negflags; | |
2150 | if (*RExC_parse == ':') { | |
2151 | RExC_parse++; | |
ca9dfc88 IZ |
2152 | paren = ':'; |
2153 | break; | |
2154 | } | |
c277df42 | 2155 | unknown: |
830247a4 IZ |
2156 | if (*RExC_parse != ')') { |
2157 | RExC_parse++; | |
2158 | vFAIL3("Sequence (%.*s...) not recognized", RExC_parse-seqstart, seqstart); | |
b45f050a | 2159 | } |
830247a4 | 2160 | nextchar(pRExC_state); |
a0d0e21e LW |
2161 | *flagp = TRYAGAIN; |
2162 | return NULL; | |
2163 | } | |
2164 | } | |
2165 | else { | |
830247a4 IZ |
2166 | parno = RExC_npar; |
2167 | RExC_npar++; | |
2168 | ret = reganode(pRExC_state, OPEN, parno); | |
c277df42 | 2169 | open = 1; |
a0d0e21e | 2170 | } |
a0ed51b3 LW |
2171 | } |
2172 | else | |
a0d0e21e LW |
2173 | ret = NULL; |
2174 | ||
2175 | /* Pick up the branches, linking them together. */ | |
830247a4 | 2176 | br = regbranch(pRExC_state, &flags, 1); |
a0d0e21e LW |
2177 | if (br == NULL) |
2178 | return(NULL); | |
830247a4 IZ |
2179 | if (*RExC_parse == '|') { |
2180 | if (!SIZE_ONLY && RExC_extralen) { | |
2181 | reginsert(pRExC_state, BRANCHJ, br); | |
a0ed51b3 LW |
2182 | } |
2183 | else | |
830247a4 | 2184 | reginsert(pRExC_state, BRANCH, br); |
c277df42 IZ |
2185 | have_branch = 1; |
2186 | if (SIZE_ONLY) | |
830247a4 | 2187 | RExC_extralen += 1; /* For BRANCHJ-BRANCH. */ |
a0ed51b3 LW |
2188 | } |
2189 | else if (paren == ':') { | |
c277df42 IZ |
2190 | *flagp |= flags&SIMPLE; |
2191 | } | |
2192 | if (open) { /* Starts with OPEN. */ | |
830247a4 | 2193 | regtail(pRExC_state, ret, br); /* OPEN -> first. */ |
a0ed51b3 LW |
2194 | } |
2195 | else if (paren != '?') /* Not Conditional */ | |
a0d0e21e | 2196 | ret = br; |
821b33a5 IZ |
2197 | if (flags&HASWIDTH) |
2198 | *flagp |= HASWIDTH; | |
a0d0e21e | 2199 | *flagp |= flags&SPSTART; |
c277df42 | 2200 | lastbr = br; |
830247a4 IZ |
2201 | while (*RExC_parse == '|') { |
2202 | if (!SIZE_ONLY && RExC_extralen) { | |
2203 | ender = reganode(pRExC_state, LONGJMP,0); | |
2204 | regtail(pRExC_state, NEXTOPER(NEXTOPER(lastbr)), ender); /* Append to the previous. */ | |
c277df42 IZ |
2205 | } |
2206 | if (SIZE_ONLY) | |
830247a4 IZ |
2207 | RExC_extralen += 2; /* Account for LONGJMP. */ |
2208 | nextchar(pRExC_state); | |
2209 | br = regbranch(pRExC_state, &flags, 0); | |
a687059c | 2210 | if (br == NULL) |
a0d0e21e | 2211 | return(NULL); |
830247a4 | 2212 | regtail(pRExC_state, lastbr, br); /* BRANCH -> BRANCH. */ |
c277df42 | 2213 | lastbr = br; |
821b33a5 IZ |
2214 | if (flags&HASWIDTH) |
2215 | *flagp |= HASWIDTH; | |
a687059c | 2216 | *flagp |= flags&SPSTART; |
a0d0e21e LW |
2217 | } |
2218 | ||
c277df42 IZ |
2219 | if (have_branch || paren != ':') { |
2220 | /* Make a closing node, and hook it on the end. */ | |
2221 | switch (paren) { | |
2222 | case ':': | |
830247a4 | 2223 | ender = reg_node(pRExC_state, TAIL); |
c277df42 IZ |
2224 | break; |
2225 | case 1: | |
830247a4 | 2226 | ender = reganode(pRExC_state, CLOSE, parno); |
c277df42 IZ |
2227 | break; |
2228 | case '<': | |
c277df42 IZ |
2229 | case ',': |
2230 | case '=': | |
2231 | case '!': | |
c277df42 | 2232 | *flagp &= ~HASWIDTH; |
821b33a5 IZ |
2233 | /* FALL THROUGH */ |
2234 | case '>': | |
830247a4 | 2235 | ender = reg_node(pRExC_state, SUCCEED); |
c277df42 IZ |
2236 | break; |
2237 | case 0: | |
830247a4 | 2238 | ender = reg_node(pRExC_state, END); |
c277df42 IZ |
2239 | break; |
2240 | } | |
830247a4 | 2241 | regtail(pRExC_state, lastbr, ender); |
a0d0e21e | 2242 | |
c277df42 IZ |
2243 | if (have_branch) { |
2244 | /* Hook the tails of the branches to the closing node. */ | |
2245 | for (br = ret; br != NULL; br = regnext(br)) { | |
830247a4 | 2246 | regoptail(pRExC_state, br, ender); |
c277df42 IZ |
2247 | } |
2248 | } | |
a0d0e21e | 2249 | } |
c277df42 IZ |
2250 | |
2251 | { | |
2252 | char *p; | |
2253 | static char parens[] = "=!<,>"; | |
2254 | ||
2255 | if (paren && (p = strchr(parens, paren))) { | |
2256 | int node = ((p - parens) % 2) ? UNLESSM : IFMATCH; | |
2257 | int flag = (p - parens) > 1; | |
2258 | ||
2259 | if (paren == '>') | |
2260 | node = SUSPEND, flag = 0; | |
830247a4 | 2261 | reginsert(pRExC_state, node,ret); |
c277df42 | 2262 | ret->flags = flag; |
830247a4 | 2263 | regtail(pRExC_state, ret, reg_node(pRExC_state, TAIL)); |
c277df42 | 2264 | } |
a0d0e21e LW |
2265 | } |
2266 | ||
2267 | /* Check for proper termination. */ | |
ce3e6498 | 2268 | if (paren) { |
830247a4 IZ |
2269 | RExC_flags16 = oregflags; |
2270 | if (RExC_parse >= RExC_end || *nextchar(pRExC_state) != ')') { | |
2271 | RExC_parse = oregcomp_parse; | |
380a0633 | 2272 | vFAIL("Unmatched ("); |
ce3e6498 | 2273 | } |
a0ed51b3 | 2274 | } |
830247a4 IZ |
2275 | else if (!paren && RExC_parse < RExC_end) { |
2276 | if (*RExC_parse == ')') { | |
2277 | RExC_parse++; | |
380a0633 | 2278 | vFAIL("Unmatched )"); |
a0ed51b3 LW |
2279 | } |
2280 | else | |
b45f050a | 2281 | FAIL("Junk on end of regexp"); /* "Can't happen". */ |
a0d0e21e LW |
2282 | /* NOTREACHED */ |
2283 | } | |
a687059c | 2284 | |
a0d0e21e | 2285 | return(ret); |
a687059c LW |
2286 | } |
2287 | ||
2288 | /* | |
2289 | - regbranch - one alternative of an | operator | |
2290 | * | |
2291 | * Implements the concatenation operator. | |
2292 | */ | |
76e3520e | 2293 | STATIC regnode * |
830247a4 | 2294 | S_regbranch(pTHX_ RExC_state_t *pRExC_state, I32 *flagp, I32 first) |
a687059c | 2295 | { |
c277df42 IZ |
2296 | register regnode *ret; |
2297 | register regnode *chain = NULL; | |
2298 | register regnode *latest; | |
2299 | I32 flags = 0, c = 0; | |
a0d0e21e | 2300 | |
b81d288d | 2301 | if (first) |
c277df42 IZ |
2302 | ret = NULL; |
2303 | else { | |
b81d288d | 2304 | if (!SIZE_ONLY && RExC_extralen) |
830247a4 | 2305 | ret = reganode(pRExC_state, BRANCHJ,0); |
c277df42 | 2306 | else |
830247a4 | 2307 | ret = reg_node(pRExC_state, BRANCH); |
c277df42 IZ |
2308 | } |
2309 | ||
b81d288d | 2310 | if (!first && SIZE_ONLY) |
830247a4 | 2311 | RExC_extralen += 1; /* BRANCHJ */ |
b81d288d | 2312 | |
c277df42 | 2313 | *flagp = WORST; /* Tentatively. */ |
a0d0e21e | 2314 | |
830247a4 IZ |
2315 | RExC_parse--; |
2316 | nextchar(pRExC_state); | |
2317 | while (RExC_parse < RExC_end && *RExC_parse != '|' && *RExC_parse != ')') { | |
a0d0e21e | 2318 | flags &= ~TRYAGAIN; |
830247a4 | 2319 | latest = regpiece(pRExC_state, &flags); |
a0d0e21e LW |
2320 | if (latest == NULL) { |
2321 | if (flags & TRYAGAIN) | |
2322 | continue; | |
2323 | return(NULL); | |
a0ed51b3 LW |
2324 | } |
2325 | else if (ret == NULL) | |
c277df42 | 2326 | ret = latest; |
a0d0e21e | 2327 | *flagp |= flags&HASWIDTH; |
c277df42 | 2328 | if (chain == NULL) /* First piece. */ |
a0d0e21e LW |
2329 | *flagp |= flags&SPSTART; |
2330 | else { | |
830247a4 IZ |
2331 | RExC_naughty++; |
2332 | regtail(pRExC_state, chain, latest); | |
a687059c | 2333 | } |
a0d0e21e | 2334 | chain = latest; |
c277df42 IZ |
2335 | c++; |
2336 | } | |
2337 | if (chain == NULL) { /* Loop ran zero times. */ | |
830247a4 | 2338 | chain = reg_node(pRExC_state, NOTHING); |
c277df42 IZ |
2339 | if (ret == NULL) |
2340 | ret = chain; | |
2341 | } | |
2342 | if (c == 1) { | |
2343 | *flagp |= flags&SIMPLE; | |
a0d0e21e | 2344 | } |
a687059c | 2345 | |
a0d0e21e | 2346 | return(ret); |
a687059c LW |
2347 | } |
2348 | ||
2349 | /* | |
2350 | - regpiece - something followed by possible [*+?] | |
2351 | * | |
2352 | * Note that the branching code sequences used for ? and the general cases | |
2353 | * of * and + are somewhat optimized: they use the same NOTHING node as | |
2354 | * both the endmarker for their branch list and the body of the last branch. | |
2355 | * It might seem that this node could be dispensed with entirely, but the | |
2356 | * endmarker role is not redundant. | |
2357 | */ | |
76e3520e | 2358 | STATIC regnode * |
830247a4 | 2359 | S_regpiece(pTHX_ RExC_state_t *pRExC_state, I32 *flagp) |
a687059c | 2360 | { |
c277df42 | 2361 | register regnode *ret; |
a0d0e21e LW |
2362 | register char op; |
2363 | register char *next; | |
2364 | I32 flags; | |
830247a4 | 2365 | char *origparse = RExC_parse; |
a0d0e21e LW |
2366 | char *maxpos; |
2367 | I32 min; | |
c277df42 | 2368 | I32 max = REG_INFTY; |
a0d0e21e | 2369 | |
830247a4 | 2370 | ret = regatom(pRExC_state, &flags); |
a0d0e21e LW |
2371 | if (ret == NULL) { |
2372 | if (flags & TRYAGAIN) | |
2373 | *flagp |= TRYAGAIN; | |
2374 | return(NULL); | |
2375 | } | |
2376 | ||
830247a4 | 2377 | op = *RExC_parse; |
a0d0e21e | 2378 | |
830247a4 IZ |
2379 | if (op == '{' && regcurly(RExC_parse)) { |
2380 | next = RExC_parse + 1; | |
a0d0e21e LW |
2381 | maxpos = Nullch; |
2382 | while (isDIGIT(*next) || *next == ',') { | |
2383 | if (*next == ',') { | |
2384 | if (maxpos) | |
2385 | break; | |
2386 | else | |
2387 | maxpos = next; | |
a687059c | 2388 | } |
a0d0e21e LW |
2389 | next++; |
2390 | } | |
2391 | if (*next == '}') { /* got one */ | |
2392 | if (!maxpos) | |
2393 | maxpos = next; | |
830247a4 IZ |
2394 | RExC_parse++; |
2395 | min = atoi(RExC_parse); | |
a0d0e21e LW |
2396 | if (*maxpos == ',') |
2397 | maxpos++; | |
2398 | else | |
830247a4 | 2399 | maxpos = RExC_parse; |
a0d0e21e LW |
2400 | max = atoi(maxpos); |
2401 | if (!max && *maxpos != '0') | |
c277df42 IZ |
2402 | max = REG_INFTY; /* meaning "infinity" */ |
2403 | else if (max >= REG_INFTY) | |
8615cb43 | 2404 | vFAIL2("Quantifier in {,} bigger than %d", REG_INFTY - 1); |
830247a4 IZ |
2405 | RExC_parse = next; |
2406 | nextchar(pRExC_state); | |
a0d0e21e LW |
2407 | |
2408 | do_curly: | |
2409 | if ((flags&SIMPLE)) { | |
830247a4 IZ |
2410 | RExC_naughty += 2 + RExC_naughty / 2; |
2411 | reginsert(pRExC_state, CURLY, ret); | |
a0d0e21e LW |
2412 | } |
2413 | else { | |
830247a4 | 2414 | regnode *w = reg_node(pRExC_state, WHILEM); |
2c2d71f5 JH |
2415 | |
2416 | w->flags = 0; | |
830247a4 IZ |
2417 | regtail(pRExC_state, ret, w); |
2418 | if (!SIZE_ONLY && RExC_extralen) { | |
2419 | reginsert(pRExC_state, LONGJMP,ret); | |
2420 | reginsert(pRExC_state, NOTHING,ret); | |
c277df42 IZ |
2421 | NEXT_OFF(ret) = 3; /* Go over LONGJMP. */ |
2422 | } | |
830247a4 IZ |
2423 | reginsert(pRExC_state, CURLYX,ret); |
2424 | if (!SIZE_ONLY && RExC_extralen) | |
c277df42 | 2425 | NEXT_OFF(ret) = 3; /* Go over NOTHING to LONGJMP. */ |
830247a4 | 2426 | regtail(pRExC_state, ret, reg_node(pRExC_state, NOTHING)); |
c277df42 | 2427 | if (SIZE_ONLY) |
830247a4 IZ |
2428 | RExC_whilem_seen++, RExC_extralen += 3; |
2429 | RExC_naughty += 4 + RExC_naughty; /* compound interest */ | |
a0d0e21e | 2430 | } |
c277df42 | 2431 | ret->flags = 0; |
a0d0e21e LW |
2432 | |
2433 | if (min > 0) | |
821b33a5 IZ |
2434 | *flagp = WORST; |
2435 | if (max > 0) | |
2436 | *flagp |= HASWIDTH; | |
a0d0e21e | 2437 | if (max && max < min) |
8615cb43 | 2438 | vFAIL("Can't do {n,m} with n > m"); |
c277df42 IZ |
2439 | if (!SIZE_ONLY) { |
2440 | ARG1_SET(ret, min); | |
2441 | ARG2_SET(ret, max); | |
a687059c | 2442 | } |
a687059c | 2443 | |
a0d0e21e | 2444 | goto nest_check; |
a687059c | 2445 | } |
a0d0e21e | 2446 | } |
a687059c | 2447 | |
a0d0e21e LW |
2448 | if (!ISMULT1(op)) { |
2449 | *flagp = flags; | |
a687059c | 2450 | return(ret); |
a0d0e21e | 2451 | } |
bb20fd44 | 2452 | |
c277df42 | 2453 | #if 0 /* Now runtime fix should be reliable. */ |
b45f050a JF |
2454 | |
2455 | /* if this is reinstated, don't forget to put this back into perldiag: | |
2456 | ||
2457 | =item Regexp *+ operand could be empty at {#} in regex m/%s/ | |
2458 | ||
2459 | (F) The part of the regexp subject to either the * or + quantifier | |
2460 | could match an empty string. The {#} shows in the regular | |
2461 | expression about where the problem was discovered. | |
2462 | ||
2463 | */ | |
2464 | ||
bb20fd44 | 2465 | if (!(flags&HASWIDTH) && op != '?') |
b45f050a | 2466 | vFAIL("Regexp *+ operand could be empty"); |
b81d288d | 2467 | #endif |
bb20fd44 | 2468 | |
830247a4 | 2469 | nextchar(pRExC_state); |
a0d0e21e | 2470 | |
821b33a5 | 2471 | *flagp = (op != '+') ? (WORST|SPSTART|HASWIDTH) : (WORST|HASWIDTH); |
a0d0e21e LW |
2472 | |
2473 | if (op == '*' && (flags&SIMPLE)) { | |
830247a4 | 2474 | reginsert(pRExC_state, STAR, ret); |
c277df42 | 2475 | ret->flags = 0; |
830247a4 | 2476 | RExC_naughty += 4; |
a0d0e21e LW |
2477 | } |
2478 | else if (op == '*') { | |
2479 | min = 0; | |
2480 | goto do_curly; | |
a0ed51b3 LW |
2481 | } |
2482 | else if (op == '+' && (flags&SIMPLE)) { | |
830247a4 | 2483 | reginsert(pRExC_state, PLUS, ret); |
c277df42 | 2484 | ret->flags = 0; |
830247a4 | 2485 | RExC_naughty += 3; |
a0d0e21e LW |
2486 | } |
2487 | else if (op == '+') { | |
2488 | min = 1; | |
2489 | goto do_curly; | |
a0ed51b3 LW |
2490 | } |
2491 | else if (op == '?') { | |
a0d0e21e LW |
2492 | min = 0; max = 1; |
2493 | goto do_curly; | |
2494 | } | |
2495 | nest_check: | |
e476b1b5 | 2496 | if (ckWARN(WARN_REGEXP) && !SIZE_ONLY && !(flags&HASWIDTH) && max > REG_INFTY/3) { |
830247a4 | 2497 | vWARN3(RExC_parse, |
b45f050a | 2498 | "%.*s matches null string many times", |
830247a4 | 2499 | RExC_parse - origparse, |
b45f050a | 2500 | origparse); |
a0d0e21e LW |
2501 | } |
2502 | ||
830247a4 IZ |
2503 | if (*RExC_parse == '?') { |
2504 | nextchar(pRExC_state); | |
2505 | reginsert(pRExC_state, MINMOD, ret); | |
2506 | regtail(pRExC_state, ret, ret + NODE_STEP_REGNODE); | |
a0d0e21e | 2507 | } |
830247a4 IZ |
2508 | if (ISMULT2(RExC_parse)) { |
2509 | RExC_parse++; | |
b45f050a JF |
2510 | vFAIL("Nested quantifiers"); |
2511 | } | |
a0d0e21e LW |
2512 | |
2513 | return(ret); | |
a687059c LW |
2514 | } |
2515 | ||
2516 | /* | |
2517 | - regatom - the lowest level | |
2518 | * | |
2519 | * Optimization: gobbles an entire sequence of ordinary characters so that | |
2520 | * it can turn them into a single node, which is smaller to store and | |
2521 | * faster to run. Backslashed characters are exceptions, each becoming a | |
2522 | * separate node; the code is simpler that way and it's not worth fixing. | |
2523 | * | |
b45f050a | 2524 | * [Yes, it is worth fixing, some scripts can run twice the speed.] */ |
76e3520e | 2525 | STATIC regnode * |
830247a4 | 2526 | S_regatom(pTHX_ RExC_state_t *pRExC_state, I32 *flagp) |
a687059c | 2527 | { |
c277df42 | 2528 | register regnode *ret = 0; |
a0d0e21e LW |
2529 | I32 flags; |
2530 | ||
2531 | *flagp = WORST; /* Tentatively. */ | |
2532 | ||
2533 | tryagain: | |
830247a4 | 2534 | switch (*RExC_parse) { |
a0d0e21e | 2535 | case '^': |
830247a4 IZ |
2536 | RExC_seen_zerolen++; |
2537 | nextchar(pRExC_state); | |
2538 | if (RExC_flags16 & PMf_MULTILINE) | |
2539 | ret = reg_node(pRExC_state, MBOL); | |
2540 | else if (RExC_flags16 & PMf_SINGLELINE) | |
2541 | ret = reg_node(pRExC_state, SBOL); | |
a0d0e21e | 2542 | else |
830247a4 | 2543 | ret = reg_node(pRExC_state, BOL); |
a0d0e21e LW |
2544 | break; |
2545 | case '$': | |
830247a4 | 2546 | nextchar(pRExC_state); |
b81d288d | 2547 | if (*RExC_parse) |
830247a4 IZ |
2548 | RExC_seen_zerolen++; |
2549 | if (RExC_flags16 & PMf_MULTILINE) | |
2550 | ret = reg_node(pRExC_state, MEOL); | |
2551 | else if (RExC_flags16 & PMf_SINGLELINE) | |
2552 | ret = reg_node(pRExC_state, SEOL); | |
a0d0e21e | 2553 | else |
830247a4 | 2554 | ret = reg_node(pRExC_state, EOL); |
a0d0e21e LW |
2555 | break; |
2556 | case '.': | |
830247a4 | 2557 | nextchar(pRExC_state); |
ffc61ed2 JH |
2558 | if (RExC_flags16 & PMf_SINGLELINE) |
2559 | ret = reg_node(pRExC_state, SANY); | |
2560 | else | |
2561 | ret = reg_node(pRExC_state, REG_ANY); | |
2562 | *flagp |= HASWIDTH|SIMPLE; | |
830247a4 | 2563 | RExC_naughty++; |
a0d0e21e LW |
2564 | break; |
2565 | case '[': | |
b45f050a | 2566 | { |
830247a4 | 2567 | char *oregcomp_parse = ++RExC_parse; |
ffc61ed2 | 2568 | ret = regclass(pRExC_state); |
830247a4 IZ |
2569 | if (*RExC_parse != ']') { |
2570 | RExC_parse = oregcomp_parse; | |
b45f050a JF |
2571 | vFAIL("Unmatched ["); |
2572 | } | |
830247a4 | 2573 | nextchar(pRExC_state); |
a0d0e21e LW |
2574 | *flagp |= HASWIDTH|SIMPLE; |
2575 | break; | |
b45f050a | 2576 | } |
a0d0e21e | 2577 | case '(': |
830247a4 IZ |
2578 | nextchar(pRExC_state); |
2579 | ret = reg(pRExC_state, 1, &flags); | |
a0d0e21e | 2580 | if (ret == NULL) { |
bf93d4cc | 2581 | if (flags & TRYAGAIN) { |
830247a4 | 2582 | if (RExC_parse == RExC_end) { |
bf93d4cc GS |
2583 | /* Make parent create an empty node if needed. */ |
2584 | *flagp |= TRYAGAIN; | |
2585 | return(NULL); | |
2586 | } | |
a0d0e21e | 2587 | goto tryagain; |
bf93d4cc | 2588 | } |
a0d0e21e LW |
2589 | return(NULL); |
2590 | } | |
c277df42 | 2591 | *flagp |= flags&(HASWIDTH|SPSTART|SIMPLE); |
a0d0e21e LW |
2592 | break; |
2593 | case '|': | |
2594 | case ')': | |
2595 | if (flags & TRYAGAIN) { | |
2596 | *flagp |= TRYAGAIN; | |
2597 | return NULL; | |
2598 | } | |
b45f050a | 2599 | vFAIL("Internal urp"); |
a0d0e21e LW |
2600 | /* Supposed to be caught earlier. */ |
2601 | break; | |
85afd4ae | 2602 | case '{': |
830247a4 IZ |
2603 | if (!regcurly(RExC_parse)) { |
2604 | RExC_parse++; | |
85afd4ae CS |
2605 | goto defchar; |
2606 | } | |
2607 | /* FALL THROUGH */ | |
a0d0e21e LW |
2608 | case '?': |
2609 | case '+': | |
2610 | case '*': | |
830247a4 | 2611 | RExC_parse++; |
b45f050a | 2612 | vFAIL("Quantifier follows nothing"); |
a0d0e21e LW |
2613 | break; |
2614 | case '\\': | |
830247a4 | 2615 | switch (*++RExC_parse) { |
a0d0e21e | 2616 | case 'A': |
830247a4 IZ |
2617 | RExC_seen_zerolen++; |
2618 | ret = reg_node(pRExC_state, SBOL); | |
a0d0e21e | 2619 | *flagp |= SIMPLE; |
830247a4 | 2620 | nextchar(pRExC_state); |
a0d0e21e LW |
2621 | break; |
2622 | case 'G': | |
830247a4 IZ |
2623 | ret = reg_node(pRExC_state, GPOS); |
2624 | RExC_seen |= REG_SEEN_GPOS; | |
a0d0e21e | 2625 | *flagp |= SIMPLE; |
830247a4 | 2626 | nextchar(pRExC_state); |
a0d0e21e LW |
2627 | break; |
2628 | case 'Z': | |
830247a4 | 2629 | ret = reg_node(pRExC_state, SEOL); |
a0d0e21e | 2630 | *flagp |= SIMPLE; |
830247a4 | 2631 | nextchar(pRExC_state); |
a0d0e21e | 2632 | break; |
b85d18e9 | 2633 | case 'z': |
830247a4 | 2634 | ret = reg_node(pRExC_state, EOS); |
b85d18e9 | 2635 | *flagp |= SIMPLE; |
830247a4 IZ |
2636 | RExC_seen_zerolen++; /* Do not optimize RE away */ |
2637 | nextchar(pRExC_state); | |
b85d18e9 | 2638 | break; |
4a2d328f | 2639 | case 'C': |
830247a4 | 2640 | ret = reg_node(pRExC_state, SANY); |
a0ed51b3 | 2641 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2642 | nextchar(pRExC_state); |
a0ed51b3 LW |
2643 | break; |
2644 | case 'X': | |
830247a4 | 2645 | ret = reg_node(pRExC_state, CLUMP); |
a0ed51b3 | 2646 | *flagp |= HASWIDTH; |
830247a4 | 2647 | nextchar(pRExC_state); |
a0ed51b3 | 2648 | if (UTF && !PL_utf8_mark) |
dfe13c55 | 2649 | is_utf8_mark((U8*)"~"); /* preload table */ |
a0ed51b3 | 2650 | break; |
a0d0e21e | 2651 | case 'w': |
ffc61ed2 | 2652 | ret = reg_node(pRExC_state, LOC ? ALNUML : ALNUM); |
a0d0e21e | 2653 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2654 | nextchar(pRExC_state); |
a0ed51b3 | 2655 | if (UTF && !PL_utf8_alnum) |
dfe13c55 | 2656 | is_utf8_alnum((U8*)"a"); /* preload table */ |
a0d0e21e LW |
2657 | break; |
2658 | case 'W': | |
ffc61ed2 | 2659 | ret = reg_node(pRExC_state, LOC ? NALNUML : NALNUM); |
a0d0e21e | 2660 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2661 | nextchar(pRExC_state); |
a0ed51b3 | 2662 | if (UTF && !PL_utf8_alnum) |
dfe13c55 | 2663 | is_utf8_alnum((U8*)"a"); /* preload table */ |
a0d0e21e LW |
2664 | break; |
2665 | case 'b': | |
830247a4 IZ |
2666 | RExC_seen_zerolen++; |
2667 | RExC_seen |= REG_SEEN_LOOKBEHIND; | |
ffc61ed2 | 2668 | ret = reg_node(pRExC_state, LOC ? BOUNDL : BOUND); |
a0d0e21e | 2669 | *flagp |= SIMPLE; |
830247a4 | 2670 | nextchar(pRExC_state); |
a0ed51b3 | 2671 | if (UTF && !PL_utf8_alnum) |
dfe13c55 | 2672 | is_utf8_alnum((U8*)"a"); /* preload table */ |
a0d0e21e LW |
2673 | break; |
2674 | case 'B': | |
830247a4 IZ |
2675 | RExC_seen_zerolen++; |
2676 | RExC_seen |= REG_SEEN_LOOKBEHIND; | |
ffc61ed2 | 2677 | ret = reg_node(pRExC_state, LOC ? NBOUNDL : NBOUND); |
a0d0e21e | 2678 | *flagp |= SIMPLE; |
830247a4 | 2679 | nextchar(pRExC_state); |
a0ed51b3 | 2680 | if (UTF && !PL_utf8_alnum) |
dfe13c55 | 2681 | is_utf8_alnum((U8*)"a"); /* preload table */ |
a0d0e21e LW |
2682 | break; |
2683 | case 's': | |
ffc61ed2 | 2684 | ret = reg_node(pRExC_state, LOC ? SPACEL : SPACE); |
a0d0e21e | 2685 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2686 | nextchar(pRExC_state); |
a0ed51b3 | 2687 | if (UTF && !PL_utf8_space) |
dfe13c55 | 2688 | is_utf8_space((U8*)" "); /* preload table */ |
a0d0e21e LW |
2689 | break; |
2690 | case 'S': | |
ffc61ed2 | 2691 | ret = reg_node(pRExC_state, LOC ? NSPACEL : NSPACE); |
a0d0e21e | 2692 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2693 | nextchar(pRExC_state); |
a0ed51b3 | 2694 | if (UTF && !PL_utf8_space) |
dfe13c55 | 2695 | is_utf8_space((U8*)" "); /* preload table */ |
a0d0e21e LW |
2696 | break; |
2697 | case 'd': | |
ffc61ed2 | 2698 | ret = reg_node(pRExC_state, DIGIT); |
a0d0e21e | 2699 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2700 | nextchar(pRExC_state); |
a0ed51b3 | 2701 | if (UTF && !PL_utf8_digit) |
dfe13c55 | 2702 | is_utf8_digit((U8*)"1"); /* preload table */ |
a0d0e21e LW |
2703 | break; |
2704 | case 'D': | |
ffc61ed2 | 2705 | ret = reg_node(pRExC_state, NDIGIT); |
a0d0e21e | 2706 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2707 | nextchar(pRExC_state); |
a0ed51b3 | 2708 | if (UTF && !PL_utf8_digit) |
dfe13c55 | 2709 | is_utf8_digit((U8*)"1"); /* preload table */ |
a0d0e21e | 2710 | break; |
a14b48bc LW |
2711 | case 'p': |
2712 | case 'P': | |
2713 | { /* a lovely hack--pretend we saw [\pX] instead */ | |
830247a4 | 2714 | char* oldregxend = RExC_end; |
a14b48bc | 2715 | |
830247a4 IZ |
2716 | if (RExC_parse[1] == '{') { |
2717 | RExC_end = strchr(RExC_parse, '}'); | |
2718 | if (!RExC_end) { | |
2719 | RExC_parse += 2; | |
2720 | RExC_end = oldregxend; | |
b45f050a JF |
2721 | vFAIL("Missing right brace on \\p{}"); |
2722 | } | |
830247a4 | 2723 | RExC_end++; |
a14b48bc LW |
2724 | } |
2725 | else | |
830247a4 IZ |
2726 | RExC_end = RExC_parse + 2; |
2727 | RExC_parse--; | |
a14b48bc | 2728 | |
ffc61ed2 | 2729 | ret = regclass(pRExC_state); |
a14b48bc | 2730 | |
830247a4 IZ |
2731 | RExC_end = oldregxend; |
2732 | RExC_parse--; | |
2733 | nextchar(pRExC_state); | |
a14b48bc LW |
2734 | *flagp |= HASWIDTH|SIMPLE; |
2735 | } | |
2736 | break; | |
a0d0e21e LW |
2737 | case 'n': |
2738 | case 'r': | |
2739 | case 't': | |
2740 | case 'f': | |
2741 | case 'e': | |
2742 | case 'a': | |
2743 | case 'x': | |
2744 | case 'c': | |
2745 | case '0': | |
2746 | goto defchar; | |
2747 | case '1': case '2': case '3': case '4': | |
2748 | case '5': case '6': case '7': case '8': case '9': | |
2749 | { | |
830247a4 | 2750 | I32 num = atoi(RExC_parse); |
a0d0e21e | 2751 | |
830247a4 | 2752 | if (num > 9 && num >= RExC_npar) |
a0d0e21e LW |
2753 | goto defchar; |
2754 | else { | |
830247a4 IZ |
2755 | while (isDIGIT(*RExC_parse)) |
2756 | RExC_parse++; | |
b45f050a | 2757 | |
830247a4 | 2758 | if (!SIZE_ONLY && num > RExC_rx->nparens) |
9baa0206 | 2759 | vFAIL("Reference to nonexistent group"); |
830247a4 IZ |
2760 | RExC_sawback = 1; |
2761 | ret = reganode(pRExC_state, FOLD | |
a0ed51b3 | 2762 | ? (LOC ? REFFL : REFF) |
c8756f30 | 2763 | : REF, num); |
a0d0e21e | 2764 | *flagp |= HASWIDTH; |
830247a4 IZ |
2765 | RExC_parse--; |
2766 | nextchar(pRExC_state); | |
a0d0e21e LW |
2767 | } |
2768 | } | |
2769 | break; | |
2770 | case '\0': | |
830247a4 | 2771 | if (RExC_parse >= RExC_end) |
b45f050a | 2772 | FAIL("Trailing \\"); |
a0d0e21e LW |
2773 | /* FALL THROUGH */ |
2774 | default: | |
c9f97d15 IZ |
2775 | /* Do not generate `unrecognized' warnings here, we fall |
2776 | back into the quick-grab loop below */ | |
a0d0e21e LW |
2777 | goto defchar; |
2778 | } | |
2779 | break; | |
4633a7c4 LW |
2780 | |
2781 | case '#': | |
830247a4 IZ |
2782 | if (RExC_flags16 & PMf_EXTENDED) { |
2783 | while (RExC_parse < RExC_end && *RExC_parse != '\n') RExC_parse++; | |
2784 | if (RExC_parse < RExC_end) | |
4633a7c4 LW |
2785 | goto tryagain; |
2786 | } | |
2787 | /* FALL THROUGH */ | |
2788 | ||
a0d0e21e | 2789 | default: { |
ba210ebe | 2790 | register STRLEN len; |
a0ed51b3 | 2791 | register UV ender; |
a0d0e21e | 2792 | register char *p; |
c277df42 | 2793 | char *oldp, *s; |
ba210ebe | 2794 | STRLEN numlen; |
a0d0e21e | 2795 | |
830247a4 | 2796 | RExC_parse++; |
a0d0e21e LW |
2797 | |
2798 | defchar: | |
830247a4 | 2799 | ret = reg_node(pRExC_state, FOLD |
a0ed51b3 | 2800 | ? (LOC ? EXACTFL : EXACTF) |
bbce6d69 | 2801 | : EXACT); |
cd439c50 | 2802 | s = STRING(ret); |
830247a4 IZ |
2803 | for (len = 0, p = RExC_parse - 1; |
2804 | len < 127 && p < RExC_end; | |
a0d0e21e LW |
2805 | len++) |
2806 | { | |
2807 | oldp = p; | |
5b5a24f7 | 2808 | |
830247a4 IZ |
2809 | if (RExC_flags16 & PMf_EXTENDED) |
2810 | p = regwhite(p, RExC_end); | |
a0d0e21e LW |
2811 | switch (*p) { |
2812 | case '^': | |
2813 | case '$': | |
2814 | case '.': | |
2815 | case '[': | |
2816 | case '(': | |
2817 | case ')': | |
2818 | case '|': | |
2819 | goto loopdone; | |
2820 | case '\\': | |
2821 | switch (*++p) { | |
2822 | case 'A': | |
2823 | case 'G': | |
2824 | case 'Z': | |
b85d18e9 | 2825 | case 'z': |
a0d0e21e LW |
2826 | case 'w': |
2827 | case 'W': | |
2828 | case 'b': | |
2829 | case 'B': | |
2830 | case 's': | |
2831 | case 'S': | |
2832 | case 'd': | |
2833 | case 'D': | |
a14b48bc LW |
2834 | case 'p': |
2835 | case 'P': | |
a0d0e21e LW |
2836 | --p; |
2837 | goto loopdone; | |
2838 | case 'n': | |
2839 | ender = '\n'; | |
2840 | p++; | |
a687059c | 2841 | break; |
a0d0e21e LW |
2842 | case 'r': |
2843 | ender = '\r'; | |
2844 | p++; | |
a687059c | 2845 | break; |
a0d0e21e LW |
2846 | case 't': |
2847 | ender = '\t'; | |
2848 | p++; | |
a687059c | 2849 | break; |
a0d0e21e LW |
2850 | case 'f': |
2851 | ender = '\f'; | |
2852 | p++; | |
a687059c | 2853 | break; |
a0d0e21e | 2854 | case 'e': |
0407a77b GS |
2855 | #ifdef ASCIIish |
2856 | ender = '\033'; | |
2857 | #else | |
2858 | ender = '\047'; | |
2859 | #endif | |
a0d0e21e | 2860 | p++; |
a687059c | 2861 | break; |
a0d0e21e | 2862 | case 'a': |
0407a77b GS |
2863 | #ifdef ASCIIish |
2864 | ender = '\007'; | |
2865 | #else | |
2866 | ender = '\057'; | |
2867 | #endif | |
a0d0e21e | 2868 | p++; |
a687059c | 2869 | break; |
a0d0e21e | 2870 | case 'x': |
a0ed51b3 LW |
2871 | if (*++p == '{') { |
2872 | char* e = strchr(p, '}'); | |
b81d288d | 2873 | |
b45f050a | 2874 | if (!e) { |
830247a4 | 2875 | RExC_parse = p + 1; |
b45f050a JF |
2876 | vFAIL("Missing right brace on \\x{}"); |
2877 | } | |
de5f0749 | 2878 | else { |
b21ed0a9 | 2879 | numlen = 1; /* allow underscores */ |
de35ba6f | 2880 | ender = (UV)scan_hex(p + 1, e - p - 1, &numlen); |
b21ed0a9 GS |
2881 | /* numlen is generous */ |
2882 | if (numlen + len >= 127) { | |
a0ed51b3 LW |
2883 | p--; |
2884 | goto loopdone; | |
2885 | } | |
2886 | p = e + 1; | |
2887 | } | |
a0ed51b3 LW |
2888 | } |
2889 | else { | |
b21ed0a9 | 2890 | numlen = 0; /* disallow underscores */ |
dff6d3cd | 2891 | ender = (UV)scan_hex(p, 2, &numlen); |
a0ed51b3 LW |
2892 | p += numlen; |
2893 | } | |
a687059c | 2894 | break; |
a0d0e21e LW |
2895 | case 'c': |
2896 | p++; | |
bbce6d69 | 2897 | ender = UCHARAT(p++); |
2898 | ender = toCTRL(ender); | |
a687059c | 2899 | break; |
a0d0e21e LW |
2900 | case '0': case '1': case '2': case '3':case '4': |
2901 | case '5': case '6': case '7': case '8':case '9': | |
2902 | if (*p == '0' || | |
830247a4 | 2903 | (isDIGIT(p[1]) && atoi(p) >= RExC_npar) ) { |
b21ed0a9 | 2904 | numlen = 0; /* disallow underscores */ |
dff6d3cd | 2905 | ender = (UV)scan_oct(p, 3, &numlen); |
a0d0e21e LW |
2906 | p += numlen; |
2907 | } | |
2908 | else { | |
2909 | --p; | |
2910 | goto loopdone; | |
a687059c LW |
2911 | } |
2912 | break; | |
a0d0e21e | 2913 | case '\0': |
830247a4 | 2914 | if (p >= RExC_end) |
b45f050a | 2915 | FAIL("Trailing \\"); |
a687059c | 2916 | /* FALL THROUGH */ |
a0d0e21e | 2917 | default: |
e476b1b5 | 2918 | if (!SIZE_ONLY && ckWARN(WARN_REGEXP) && isALPHA(*p)) |
b45f050a | 2919 | vWARN2(p +1, "Unrecognized escape \\%c passed through", *p); |
a0ed51b3 | 2920 | goto normal_default; |
a0d0e21e LW |
2921 | } |
2922 | break; | |
a687059c | 2923 | default: |
a0ed51b3 | 2924 | normal_default: |
fd400ab9 | 2925 | if (UTF8_IS_START(*p) && UTF) { |
830247a4 | 2926 | ender = utf8_to_uv((U8*)p, RExC_end - p, |
ba210ebe | 2927 | &numlen, 0); |
a0ed51b3 LW |
2928 | p += numlen; |
2929 | } | |
2930 | else | |
2931 | ender = *p++; | |
a0d0e21e | 2932 | break; |
a687059c | 2933 | } |
830247a4 IZ |
2934 | if (RExC_flags16 & PMf_EXTENDED) |
2935 | p = regwhite(p, RExC_end); | |
a0ed51b3 LW |
2936 | if (UTF && FOLD) { |
2937 | if (LOC) | |
2938 | ender = toLOWER_LC_uni(ender); | |
2939 | else | |
2940 | ender = toLOWER_uni(ender); | |
2941 | } | |
a0d0e21e LW |
2942 | if (ISMULT2(p)) { /* Back off on ?+*. */ |
2943 | if (len) | |
2944 | p = oldp; | |
fd400ab9 JH |
2945 | /* ender is a Unicode value so it can be > 0xff -- |
2946 | * in other words, do not use UTF8_IS_CONTINUED(). */ | |
a0ed51b3 | 2947 | else if (ender >= 0x80 && UTF) { |
830247a4 | 2948 | reguni(pRExC_state, ender, s, &numlen); |
a0ed51b3 LW |
2949 | s += numlen; |
2950 | len += numlen; | |
2951 | } | |
a0d0e21e LW |
2952 | else { |
2953 | len++; | |
cd439c50 | 2954 | REGC(ender, s++); |
a0d0e21e LW |
2955 | } |
2956 | break; | |
a687059c | 2957 | } |
fd400ab9 JH |
2958 | /* ender is a Unicode value so it can be > 0xff -- |
2959 | * in other words, do not use UTF8_IS_CONTINUED(). */ | |
a0ed51b3 | 2960 | if (ender >= 0x80 && UTF) { |
830247a4 | 2961 | reguni(pRExC_state, ender, s, &numlen); |
a0ed51b3 LW |
2962 | s += numlen; |
2963 | len += numlen - 1; | |
2964 | } | |
2965 | else | |
cd439c50 | 2966 | REGC(ender, s++); |
a0d0e21e LW |
2967 | } |
2968 | loopdone: | |
830247a4 IZ |
2969 | RExC_parse = p - 1; |
2970 | nextchar(pRExC_state); | |
793db0cb JH |
2971 | { |
2972 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
2973 | IV iv = len; | |
2974 | if (iv < 0) | |
2975 | vFAIL("Internal disaster"); | |
2976 | } | |
a0d0e21e LW |
2977 | if (len > 0) |
2978 | *flagp |= HASWIDTH; | |
2979 | if (len == 1) | |
2980 | *flagp |= SIMPLE; | |
c277df42 | 2981 | if (!SIZE_ONLY) |
cd439c50 IZ |
2982 | STR_LEN(ret) = len; |
2983 | if (SIZE_ONLY) | |
830247a4 | 2984 | RExC_size += STR_SZ(len); |
cd439c50 | 2985 | else |
830247a4 | 2986 | RExC_emit += STR_SZ(len); |
a687059c | 2987 | } |
a0d0e21e LW |
2988 | break; |
2989 | } | |
a687059c | 2990 | |
a0d0e21e | 2991 | return(ret); |
a687059c LW |
2992 | } |
2993 | ||
873ef191 | 2994 | STATIC char * |
cea2e8a9 | 2995 | S_regwhite(pTHX_ char *p, char *e) |
5b5a24f7 CS |
2996 | { |
2997 | while (p < e) { | |
2998 | if (isSPACE(*p)) | |
2999 | ++p; | |
3000 | else if (*p == '#') { | |
3001 | do { | |
3002 | p++; | |
3003 | } while (p < e && *p != '\n'); | |
3004 | } | |
3005 | else | |
3006 | break; | |
3007 | } | |
3008 | return p; | |
3009 | } | |
3010 | ||
b8c5462f JH |
3011 | /* Parse POSIX character classes: [[:foo:]], [[=foo=]], [[.foo.]]. |
3012 | Character classes ([:foo:]) can also be negated ([:^foo:]). | |
3013 | Returns a named class id (ANYOF_XXX) if successful, -1 otherwise. | |
3014 | Equivalence classes ([=foo=]) and composites ([.foo.]) are parsed, | |
3015 | but trigger warnings because they are currently unimplemented. */ | |
3016 | STATIC I32 | |
830247a4 | 3017 | S_regpposixcc(pTHX_ RExC_state_t *pRExC_state, I32 value) |
620e46c5 JH |
3018 | { |
3019 | char *posixcc = 0; | |
936ed897 | 3020 | I32 namedclass = OOB_NAMEDCLASS; |
620e46c5 | 3021 | |
830247a4 | 3022 | if (value == '[' && RExC_parse + 1 < RExC_end && |
620e46c5 | 3023 | /* I smell either [: or [= or [. -- POSIX has been here, right? */ |
830247a4 IZ |
3024 | (*RExC_parse == ':' || |
3025 | *RExC_parse == '=' || | |
3026 | *RExC_parse == '.')) { | |
3027 | char c = *RExC_parse; | |
3028 | char* s = RExC_parse++; | |
b81d288d | 3029 | |
830247a4 IZ |
3030 | while (RExC_parse < RExC_end && *RExC_parse != c) |
3031 | RExC_parse++; | |
3032 | if (RExC_parse == RExC_end) | |
620e46c5 | 3033 | /* Grandfather lone [:, [=, [. */ |
830247a4 | 3034 | RExC_parse = s; |
620e46c5 | 3035 | else { |
830247a4 | 3036 | char* t = RExC_parse++; /* skip over the c */ |
b8c5462f | 3037 | |
830247a4 IZ |
3038 | if (*RExC_parse == ']') { |
3039 | RExC_parse++; /* skip over the ending ] */ | |
b8c5462f JH |
3040 | posixcc = s + 1; |
3041 | if (*s == ':') { | |
3042 | I32 complement = *posixcc == '^' ? *posixcc++ : 0; | |
3043 | I32 skip = 5; /* the most common skip */ | |
3044 | ||
3045 | switch (*posixcc) { | |
3046 | case 'a': | |
3047 | if (strnEQ(posixcc, "alnum", 5)) | |
3048 | namedclass = | |
3049 | complement ? ANYOF_NALNUMC : ANYOF_ALNUMC; | |
3050 | else if (strnEQ(posixcc, "alpha", 5)) | |
3051 | namedclass = | |
3052 | complement ? ANYOF_NALPHA : ANYOF_ALPHA; | |
3053 | else if (strnEQ(posixcc, "ascii", 5)) | |
3054 | namedclass = | |
3055 | complement ? ANYOF_NASCII : ANYOF_ASCII; | |
3056 | break; | |
aaa51d5e JF |
3057 | case 'b': |
3058 | if (strnEQ(posixcc, "blank", 5)) | |
3059 | namedclass = | |
3060 | complement ? ANYOF_NBLANK : ANYOF_BLANK; | |
3061 | break; | |
b8c5462f JH |
3062 | case 'c': |
3063 | if (strnEQ(posixcc, "cntrl", 5)) | |
3064 | namedclass = | |
3065 | complement ? ANYOF_NCNTRL : ANYOF_CNTRL; | |
3066 | break; | |
3067 | case 'd': | |
3068 | if (strnEQ(posixcc, "digit", 5)) | |
3069 | namedclass = | |
3070 | complement ? ANYOF_NDIGIT : ANYOF_DIGIT; | |
3071 | break; | |
3072 | case 'g': | |
3073 | if (strnEQ(posixcc, "graph", 5)) | |
3074 | namedclass = | |
3075 | complement ? ANYOF_NGRAPH : ANYOF_GRAPH; | |
3076 | break; | |
3077 | case 'l': | |
3078 | if (strnEQ(posixcc, "lower", 5)) | |
3079 | namedclass = | |
3080 | complement ? ANYOF_NLOWER : ANYOF_LOWER; | |
3081 | break; | |
3082 | case 'p': | |
3083 | if (strnEQ(posixcc, "print", 5)) | |
3084 | namedclass = | |
3085 | complement ? ANYOF_NPRINT : ANYOF_PRINT; | |
3086 | else if (strnEQ(posixcc, "punct", 5)) | |
3087 | namedclass = | |
3088 | complement ? ANYOF_NPUNCT : ANYOF_PUNCT; | |
3089 | break; | |
3090 | case 's': | |
3091 | if (strnEQ(posixcc, "space", 5)) | |
3092 | namedclass = | |
aaa51d5e | 3093 | complement ? ANYOF_NPSXSPC : ANYOF_PSXSPC; |
cc4319de | 3094 | break; |
b8c5462f JH |
3095 | case 'u': |
3096 | if (strnEQ(posixcc, "upper", 5)) | |
3097 | namedclass = | |
3098 | complement ? ANYOF_NUPPER : ANYOF_UPPER; | |
3099 | break; | |
3100 | case 'w': /* this is not POSIX, this is the Perl \w */ | |
3101 | if (strnEQ(posixcc, "word", 4)) { | |
3102 | namedclass = | |
3103 | complement ? ANYOF_NALNUM : ANYOF_ALNUM; | |
3104 | skip = 4; | |
3105 | } | |
3106 | break; | |
3107 | case 'x': | |
3108 | if (strnEQ(posixcc, "xdigit", 6)) { | |
3109 | namedclass = | |
3110 | complement ? ANYOF_NXDIGIT : ANYOF_XDIGIT; | |
3111 | skip = 6; | |
3112 | } | |
3113 | break; | |
3114 | } | |
ac561586 JH |
3115 | if (namedclass == OOB_NAMEDCLASS || |
3116 | posixcc[skip] != ':' || | |
3117 | posixcc[skip+1] != ']') | |
b45f050a JF |
3118 | { |
3119 | Simple_vFAIL3("POSIX class [:%.*s:] unknown", | |
3120 | t - s - 1, s + 1); | |
3121 | } | |
3122 | } else if (!SIZE_ONLY) { | |
b8c5462f | 3123 | /* [[=foo=]] and [[.foo.]] are still future. */ |
b45f050a | 3124 | |
830247a4 | 3125 | /* adjust RExC_parse so the warning shows after |
b45f050a | 3126 | the class closes */ |
830247a4 IZ |
3127 | while (*RExC_parse && *RExC_parse != ']') |
3128 | RExC_parse++; | |
b45f050a JF |
3129 | Simple_vFAIL3("POSIX syntax [%c %c] is reserved for future extensions", c, c); |
3130 | } | |
b8c5462f JH |
3131 | } else { |
3132 | /* Maternal grandfather: | |
3133 | * "[:" ending in ":" but not in ":]" */ | |
830247a4 | 3134 | RExC_parse = s; |
767d463e | 3135 | } |
620e46c5 JH |
3136 | } |
3137 | } | |
3138 | ||
b8c5462f JH |
3139 | return namedclass; |
3140 | } | |
3141 | ||
3142 | STATIC void | |
830247a4 | 3143 | S_checkposixcc(pTHX_ RExC_state_t *pRExC_state) |
b8c5462f | 3144 | { |
e476b1b5 | 3145 | if (!SIZE_ONLY && ckWARN(WARN_REGEXP) && |
830247a4 IZ |
3146 | (*RExC_parse == ':' || |
3147 | *RExC_parse == '=' || | |
3148 | *RExC_parse == '.')) { | |
3149 | char *s = RExC_parse; | |
93733859 | 3150 | char c = *s++; |
b8c5462f JH |
3151 | |
3152 | while(*s && isALNUM(*s)) | |
3153 | s++; | |
3154 | if (*s && c == *s && s[1] == ']') { | |
b45f050a JF |
3155 | vWARN3(s+2, "POSIX syntax [%c %c] belongs inside character classes", c, c); |
3156 | ||
3157 | /* [[=foo=]] and [[.foo.]] are still future. */ | |
b8c5462f | 3158 | if (c == '=' || c == '.') |
b45f050a | 3159 | { |
830247a4 | 3160 | /* adjust RExC_parse so the error shows after |
b45f050a | 3161 | the class closes */ |
830247a4 | 3162 | while (*RExC_parse && *RExC_parse++ != ']') |
b45f050a JF |
3163 | ; |
3164 | Simple_vFAIL3("POSIX syntax [%c %c] is reserved for future extensions", c, c); | |
3165 | } | |
b8c5462f JH |
3166 | } |
3167 | } | |
620e46c5 JH |
3168 | } |
3169 | ||
76e3520e | 3170 | STATIC regnode * |
830247a4 | 3171 | S_regclass(pTHX_ RExC_state_t *pRExC_state) |
a687059c | 3172 | { |
ffc61ed2 JH |
3173 | register UV value; |
3174 | register IV lastvalue = OOB_UNICODE; | |
3175 | register IV range = 0; | |
c277df42 | 3176 | register regnode *ret; |
ba210ebe | 3177 | STRLEN numlen; |
ffc61ed2 | 3178 | IV namedclass; |
73b437c8 | 3179 | char *rangebegin; |
936ed897 | 3180 | bool need_class = 0; |
ffc61ed2 JH |
3181 | SV *listsv; |
3182 | register char *e; | |
3183 | UV n; | |
1aa99e6b | 3184 | bool dont_optimize_invert = FALSE; |
ffc61ed2 JH |
3185 | |
3186 | ret = reganode(pRExC_state, ANYOF, 0); | |
3187 | ||
3188 | if (!SIZE_ONLY) | |
3189 | ANYOF_FLAGS(ret) = 0; | |
3190 | ||
3191 | if (*RExC_parse == '^') { /* Complement of range. */ | |
3192 | RExC_naughty++; | |
3193 | RExC_parse++; | |
3194 | if (!SIZE_ONLY) | |
3195 | ANYOF_FLAGS(ret) |= ANYOF_INVERT; | |
3196 | } | |
a0d0e21e | 3197 | |
936ed897 | 3198 | if (SIZE_ONLY) |
830247a4 | 3199 | RExC_size += ANYOF_SKIP; |
936ed897 | 3200 | else { |
830247a4 | 3201 | RExC_emit += ANYOF_SKIP; |
936ed897 IZ |
3202 | if (FOLD) |
3203 | ANYOF_FLAGS(ret) |= ANYOF_FOLD; | |
3204 | if (LOC) | |
3205 | ANYOF_FLAGS(ret) |= ANYOF_LOCALE; | |
ffc61ed2 JH |
3206 | ANYOF_BITMAP_ZERO(ret); |
3207 | listsv = newSVpvn("# comment\n", 10); | |
a0d0e21e | 3208 | } |
b8c5462f | 3209 | |
e476b1b5 | 3210 | if (!SIZE_ONLY && ckWARN(WARN_REGEXP)) |
830247a4 | 3211 | checkposixcc(pRExC_state); |
b8c5462f | 3212 | |
830247a4 | 3213 | if (*RExC_parse == ']' || *RExC_parse == '-') |
ffc61ed2 JH |
3214 | goto charclassloop; /* allow 1st char to be ] or - */ |
3215 | ||
830247a4 | 3216 | while (RExC_parse < RExC_end && *RExC_parse != ']') { |
ffc61ed2 JH |
3217 | |
3218 | charclassloop: | |
3219 | ||
3220 | namedclass = OOB_NAMEDCLASS; /* initialize as illegal */ | |
3221 | ||
73b437c8 | 3222 | if (!range) |
830247a4 | 3223 | rangebegin = RExC_parse; |
ffc61ed2 JH |
3224 | if (UTF) { |
3225 | value = utf8_to_uv((U8*)RExC_parse, | |
3226 | RExC_end - RExC_parse, | |
3227 | &numlen, 0); | |
3228 | RExC_parse += numlen; | |
3229 | } | |
3230 | else | |
3231 | value = UCHARAT(RExC_parse++); | |
620e46c5 | 3232 | if (value == '[') |
830247a4 | 3233 | namedclass = regpposixcc(pRExC_state, value); |
620e46c5 | 3234 | else if (value == '\\') { |
ffc61ed2 JH |
3235 | if (UTF) { |
3236 | value = utf8_to_uv((U8*)RExC_parse, | |
3237 | RExC_end - RExC_parse, | |
3238 | &numlen, 0); | |
3239 | RExC_parse += numlen; | |
3240 | } | |
3241 | else | |
3242 | value = UCHARAT(RExC_parse++); | |
470c3474 | 3243 | /* Some compilers cannot handle switching on 64-bit integer |
ffc61ed2 | 3244 | * values, therefore value cannot be an UV. Yes, this will |
e2962f66 JH |
3245 | * be a problem later if we want switch on Unicode. |
3246 | * A similar issue a little bit later when switching on | |
3247 | * namedclass. --jhi */ | |
ffc61ed2 | 3248 | switch ((I32)value) { |
b8c5462f JH |
3249 | case 'w': namedclass = ANYOF_ALNUM; break; |
3250 | case 'W': namedclass = ANYOF_NALNUM; break; | |
3251 | case 's': namedclass = ANYOF_SPACE; break; | |
3252 | case 'S': namedclass = ANYOF_NSPACE; break; | |
3253 | case 'd': namedclass = ANYOF_DIGIT; break; | |
3254 | case 'D': namedclass = ANYOF_NDIGIT; break; | |
ffc61ed2 JH |
3255 | case 'p': |
3256 | case 'P': | |
3257 | if (*RExC_parse == '{') { | |
3258 | e = strchr(RExC_parse++, '}'); | |
3259 | if (!e) | |
3260 | vFAIL("Missing right brace on \\p{}"); | |
3261 | n = e - RExC_parse; | |
3262 | } | |
3263 | else { | |
3264 | e = RExC_parse; | |
3265 | n = 1; | |
3266 | } | |
3267 | if (!SIZE_ONLY) { | |
3268 | if (value == 'p') | |
3269 | Perl_sv_catpvf(aTHX_ listsv, | |
3270 | "+utf8::%.*s\n", (int)n, RExC_parse); | |
3271 | else | |
3272 | Perl_sv_catpvf(aTHX_ listsv, | |
3273 | "!utf8::%.*s\n", (int)n, RExC_parse); | |
3274 | } | |
3275 | RExC_parse = e + 1; | |
3276 | ANYOF_FLAGS(ret) |= ANYOF_UNICODE; | |
3277 | continue; | |
b8c5462f JH |
3278 | case 'n': value = '\n'; break; |
3279 | case 'r': value = '\r'; break; | |
3280 | case 't': value = '\t'; break; | |
3281 | case 'f': value = '\f'; break; | |
3282 | case 'b': value = '\b'; break; | |
0407a77b | 3283 | #ifdef ASCIIish |
b8c5462f JH |
3284 | case 'e': value = '\033'; break; |
3285 | case 'a': value = '\007'; break; | |
0407a77b GS |
3286 | #else |
3287 | case 'e': value = '\047'; break; | |
3288 | case 'a': value = '\057'; break; | |
3289 | #endif | |
b8c5462f | 3290 | case 'x': |
ffc61ed2 JH |
3291 | if (*RExC_parse == '{') { |
3292 | e = strchr(RExC_parse++, '}'); | |
b81d288d | 3293 | if (!e) |
ffc61ed2 JH |
3294 | vFAIL("Missing right brace on \\x{}"); |
3295 | numlen = 1; /* allow underscores */ | |
3296 | value = (UV)scan_hex(RExC_parse, | |
3297 | e - RExC_parse, | |
3298 | &numlen); | |
3299 | RExC_parse = e + 1; | |
3300 | } | |
3301 | else { | |
3302 | numlen = 0; /* disallow underscores */ | |
3303 | value = (UV)scan_hex(RExC_parse, 2, &numlen); | |
3304 | RExC_parse += numlen; | |
3305 | } | |
b8c5462f JH |
3306 | break; |
3307 | case 'c': | |
830247a4 | 3308 | value = UCHARAT(RExC_parse++); |
b8c5462f JH |
3309 | value = toCTRL(value); |
3310 | break; | |
3311 | case '0': case '1': case '2': case '3': case '4': | |
3312 | case '5': case '6': case '7': case '8': case '9': | |
b21ed0a9 | 3313 | numlen = 0; /* disallow underscores */ |
830247a4 IZ |
3314 | value = (UV)scan_oct(--RExC_parse, 3, &numlen); |
3315 | RExC_parse += numlen; | |
b8c5462f | 3316 | break; |
1028017a | 3317 | default: |
e476b1b5 | 3318 | if (!SIZE_ONLY && ckWARN(WARN_REGEXP) && isALPHA(value)) |
ffc61ed2 JH |
3319 | vWARN2(RExC_parse, |
3320 | "Unrecognized escape \\%c in character class passed through", | |
3321 | (int)value); | |
1028017a | 3322 | break; |
b8c5462f | 3323 | } |
ffc61ed2 JH |
3324 | } /* end of \blah */ |
3325 | ||
3326 | if (namedclass > OOB_NAMEDCLASS) { /* this is a named class \blah */ | |
3327 | ||
3328 | if (!SIZE_ONLY && !need_class) | |
936ed897 | 3329 | ANYOF_CLASS_ZERO(ret); |
ffc61ed2 | 3330 | |
936ed897 | 3331 | need_class = 1; |
ffc61ed2 JH |
3332 | |
3333 | /* a bad range like a-\d, a-[:digit:] ? */ | |
3334 | if (range) { | |
73b437c8 | 3335 | if (!SIZE_ONLY) { |
e476b1b5 | 3336 | if (ckWARN(WARN_REGEXP)) |
830247a4 | 3337 | vWARN4(RExC_parse, |
b45f050a | 3338 | "False [] range \"%*.*s\"", |
830247a4 IZ |
3339 | RExC_parse - rangebegin, |
3340 | RExC_parse - rangebegin, | |
b45f050a | 3341 | rangebegin); |
ffc61ed2 JH |
3342 | if (lastvalue < 256) { |
3343 | ANYOF_BITMAP_SET(ret, lastvalue); | |
3344 | ANYOF_BITMAP_SET(ret, '-'); | |
3345 | } | |
3346 | else { | |
3347 | ANYOF_FLAGS(ret) |= ANYOF_UNICODE; | |
3348 | Perl_sv_catpvf(aTHX_ listsv, | |
3349 | /* 0x002D is Unicode for '-' */ | |
3350 | "%04"UVxf"\n002D\n", (UV)lastvalue); | |
3351 | } | |
b8c5462f | 3352 | } |
ffc61ed2 JH |
3353 | |
3354 | range = 0; /* this was not a true range */ | |
73b437c8 | 3355 | } |
ffc61ed2 | 3356 | |
73b437c8 | 3357 | if (!SIZE_ONLY) { |
e2962f66 JH |
3358 | /* Possible truncation here but in some 64-bit environments |
3359 | * the compiler gets heartburn about switch on 64-bit values. | |
3360 | * A similar issue a little earlier when switching on value. | |
98f323fa | 3361 | * --jhi */ |
e2962f66 | 3362 | switch ((I32)namedclass) { |
73b437c8 JH |
3363 | case ANYOF_ALNUM: |
3364 | if (LOC) | |
936ed897 | 3365 | ANYOF_CLASS_SET(ret, ANYOF_ALNUM); |
73b437c8 JH |
3366 | else { |
3367 | for (value = 0; value < 256; value++) | |
3368 | if (isALNUM(value)) | |
936ed897 | 3369 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3370 | } |
1aa99e6b | 3371 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3372 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsWord\n"); |
73b437c8 JH |
3373 | break; |
3374 | case ANYOF_NALNUM: | |
3375 | if (LOC) | |
936ed897 | 3376 | ANYOF_CLASS_SET(ret, ANYOF_NALNUM); |
73b437c8 JH |
3377 | else { |
3378 | for (value = 0; value < 256; value++) | |
3379 | if (!isALNUM(value)) | |
936ed897 | 3380 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3381 | } |
1aa99e6b | 3382 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3383 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsWord\n"); |
73b437c8 | 3384 | break; |
ffc61ed2 | 3385 | case ANYOF_ALNUMC: |
73b437c8 | 3386 | if (LOC) |
ffc61ed2 | 3387 | ANYOF_CLASS_SET(ret, ANYOF_ALNUMC); |
73b437c8 JH |
3388 | else { |
3389 | for (value = 0; value < 256; value++) | |
ffc61ed2 | 3390 | if (isALNUMC(value)) |
936ed897 | 3391 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3392 | } |
1aa99e6b | 3393 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3394 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsAlnum\n"); |
73b437c8 JH |
3395 | break; |
3396 | case ANYOF_NALNUMC: | |
3397 | if (LOC) | |
936ed897 | 3398 | ANYOF_CLASS_SET(ret, ANYOF_NALNUMC); |
73b437c8 JH |
3399 | else { |
3400 | for (value = 0; value < 256; value++) | |
3401 | if (!isALNUMC(value)) | |
936ed897 | 3402 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3403 | } |
1aa99e6b | 3404 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3405 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsAlnum\n"); |
73b437c8 JH |
3406 | break; |
3407 | case ANYOF_ALPHA: | |
3408 | if (LOC) | |
936ed897 | 3409 | ANYOF_CLASS_SET(ret, ANYOF_ALPHA); |
73b437c8 JH |
3410 | else { |
3411 | for (value = 0; value < 256; value++) | |
3412 | if (isALPHA(value)) | |
936ed897 | 3413 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3414 | } |
1aa99e6b | 3415 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3416 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsAlpha\n"); |
73b437c8 JH |
3417 | break; |
3418 | case ANYOF_NALPHA: | |
3419 | if (LOC) | |
936ed897 | 3420 | ANYOF_CLASS_SET(ret, ANYOF_NALPHA); |
73b437c8 JH |
3421 | else { |
3422 | for (value = 0; value < 256; value++) | |
3423 | if (!isALPHA(value)) | |
936ed897 | 3424 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3425 | } |
1aa99e6b | 3426 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3427 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsAlpha\n"); |
73b437c8 JH |
3428 | break; |
3429 | case ANYOF_ASCII: | |
3430 | if (LOC) | |
936ed897 | 3431 | ANYOF_CLASS_SET(ret, ANYOF_ASCII); |
73b437c8 | 3432 | else { |
a5993822 | 3433 | #ifdef ASCIIish |
73b437c8 | 3434 | for (value = 0; value < 128; value++) |
936ed897 | 3435 | ANYOF_BITMAP_SET(ret, value); |
a5993822 PP |
3436 | #else /* EBCDIC */ |
3437 | for (value = 0; value < 256; value++) | |
3438 | if (isASCII(value)) | |
3439 | ANYOF_BITMAP_SET(ret, value); | |
3440 | #endif /* EBCDIC */ | |
73b437c8 | 3441 | } |
1aa99e6b | 3442 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3443 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsASCII\n"); |
73b437c8 JH |
3444 | break; |
3445 | case ANYOF_NASCII: | |
3446 | if (LOC) | |
936ed897 | 3447 | ANYOF_CLASS_SET(ret, ANYOF_NASCII); |
73b437c8 | 3448 | else { |
a5993822 | 3449 | #ifdef ASCIIish |
73b437c8 | 3450 | for (value = 128; value < 256; value++) |
936ed897 | 3451 | ANYOF_BITMAP_SET(ret, value); |
a5993822 PP |
3452 | #else /* EBCDIC */ |
3453 | for (value = 0; value < 256; value++) | |
3454 | if (!isASCII(value)) | |
3455 | ANYOF_BITMAP_SET(ret, value); | |
3456 | #endif /* EBCDIC */ | |
73b437c8 | 3457 | } |
1aa99e6b | 3458 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3459 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsASCII\n"); |
73b437c8 | 3460 | break; |
aaa51d5e JF |
3461 | case ANYOF_BLANK: |
3462 | if (LOC) | |
3463 | ANYOF_CLASS_SET(ret, ANYOF_BLANK); | |
3464 | else { | |
3465 | for (value = 0; value < 256; value++) | |
3466 | if (isBLANK(value)) | |
3467 | ANYOF_BITMAP_SET(ret, value); | |
3468 | } | |
1aa99e6b | 3469 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3470 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsBlank\n"); |
aaa51d5e JF |
3471 | break; |
3472 | case ANYOF_NBLANK: | |
3473 | if (LOC) | |
3474 | ANYOF_CLASS_SET(ret, ANYOF_NBLANK); | |
3475 | else { | |
3476 | for (value = 0; value < 256; value++) | |
3477 | if (!isBLANK(value)) | |
3478 | ANYOF_BITMAP_SET(ret, value); | |
3479 | } | |
1aa99e6b | 3480 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3481 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsBlank\n"); |
aaa51d5e | 3482 | break; |
73b437c8 JH |
3483 | case ANYOF_CNTRL: |
3484 | if (LOC) | |
936ed897 | 3485 | ANYOF_CLASS_SET(ret, ANYOF_CNTRL); |
73b437c8 JH |
3486 | else { |
3487 | for (value = 0; value < 256; value++) | |
3488 | if (isCNTRL(value)) | |
936ed897 | 3489 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3490 | } |
1aa99e6b | 3491 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3492 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsCntrl\n"); |
73b437c8 JH |
3493 | break; |
3494 | case ANYOF_NCNTRL: | |
3495 | if (LOC) | |
936ed897 | 3496 | ANYOF_CLASS_SET(ret, ANYOF_NCNTRL); |
73b437c8 JH |
3497 | else { |
3498 | for (value = 0; value < 256; value++) | |
3499 | if (!isCNTRL(value)) | |
936ed897 | 3500 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3501 | } |
1aa99e6b | 3502 | dont_optimize_invert = TRUE; |
ffc61ed2 JH |
3503 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsCntrl\n"); |
3504 | break; | |
3505 | case ANYOF_DIGIT: | |
3506 | if (LOC) | |
3507 | ANYOF_CLASS_SET(ret, ANYOF_DIGIT); | |
3508 | else { | |
3509 | /* consecutive digits assumed */ | |
3510 | for (value = '0'; value <= '9'; value++) | |
3511 | ANYOF_BITMAP_SET(ret, value); | |
3512 | } | |
1aa99e6b | 3513 | dont_optimize_invert = TRUE; |
ffc61ed2 JH |
3514 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsDigit\n"); |
3515 | break; | |
3516 | case ANYOF_NDIGIT: | |
3517 | if (LOC) | |
3518 | ANYOF_CLASS_SET(ret, ANYOF_NDIGIT); | |
3519 | else { | |
3520 | /* consecutive digits assumed */ | |
3521 | for (value = 0; value < '0'; value++) | |
3522 | ANYOF_BITMAP_SET(ret, value); | |
3523 | for (value = '9' + 1; value < 256; value++) | |
3524 | ANYOF_BITMAP_SET(ret, value); | |
3525 | } | |
1aa99e6b | 3526 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3527 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsDigit\n"); |
73b437c8 JH |
3528 | break; |
3529 | case ANYOF_GRAPH: | |
3530 | if (LOC) | |
936ed897 | 3531 | ANYOF_CLASS_SET(ret, ANYOF_GRAPH); |
73b437c8 JH |
3532 | else { |
3533 | for (value = 0; value < 256; value++) | |
3534 | if (isGRAPH(value)) | |
936ed897 | 3535 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3536 | } |
1aa99e6b | 3537 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3538 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsGraph\n"); |
73b437c8 JH |
3539 | break; |
3540 | case ANYOF_NGRAPH: | |
3541 | if (LOC) | |
936ed897 | 3542 | ANYOF_CLASS_SET(ret, ANYOF_NGRAPH); |
73b437c8 JH |
3543 | else { |
3544 | for (value = 0; value < 256; value++) | |
3545 | if (!isGRAPH(value)) | |
936ed897 | 3546 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3547 | } |
1aa99e6b | 3548 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3549 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsGraph\n"); |
73b437c8 JH |
3550 | break; |
3551 | case ANYOF_LOWER: | |
3552 | if (LOC) | |
936ed897 | 3553 | ANYOF_CLASS_SET(ret, ANYOF_LOWER); |
73b437c8 JH |
3554 | else { |
3555 | for (value = 0; value < 256; value++) | |
3556 | if (isLOWER(value)) | |
936ed897 | 3557 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3558 | } |
1aa99e6b | 3559 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3560 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsLower\n"); |
73b437c8 JH |
3561 | break; |
3562 | case ANYOF_NLOWER: | |
3563 | if (LOC) | |
936ed897 | 3564 | ANYOF_CLASS_SET(ret, ANYOF_NLOWER); |
73b437c8 JH |
3565 | else { |
3566 | for (value = 0; value < 256; value++) | |
3567 | if (!isLOWER(value)) | |
936ed897 | 3568 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3569 | } |
1aa99e6b | 3570 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3571 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsLower\n"); |
73b437c8 JH |
3572 | break; |
3573 | case ANYOF_PRINT: | |
3574 | if (LOC) | |
936ed897 | 3575 | ANYOF_CLASS_SET(ret, ANYOF_PRINT); |
73b437c8 JH |
3576 | else { |
3577 | for (value = 0; value < 256; value++) | |
3578 | if (isPRINT(value)) | |
936ed897 | 3579 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3580 | } |
1aa99e6b | 3581 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3582 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsPrint\n"); |
73b437c8 JH |
3583 | break; |
3584 | case ANYOF_NPRINT: | |
3585 | if (LOC) | |
936ed897 | 3586 | ANYOF_CLASS_SET(ret, ANYOF_NPRINT); |
73b437c8 JH |
3587 | else { |
3588 | for (value = 0; value < 256; value++) | |
3589 | if (!isPRINT(value)) | |
936ed897 | 3590 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3591 | } |
1aa99e6b | 3592 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3593 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsPrint\n"); |
73b437c8 | 3594 | break; |
aaa51d5e JF |
3595 | case ANYOF_PSXSPC: |
3596 | if (LOC) | |
3597 | ANYOF_CLASS_SET(ret, ANYOF_PSXSPC); | |
3598 | else { | |
3599 | for (value = 0; value < 256; value++) | |
3600 | if (isPSXSPC(value)) | |
3601 | ANYOF_BITMAP_SET(ret, value); | |
3602 | } | |
1aa99e6b | 3603 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3604 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsSpace\n"); |
aaa51d5e JF |
3605 | break; |
3606 | case ANYOF_NPSXSPC: | |
3607 | if (LOC) | |
3608 | ANYOF_CLASS_SET(ret, ANYOF_NPSXSPC); | |
3609 | else { | |
3610 | for (value = 0; value < 256; value++) | |
3611 | if (!isPSXSPC(value)) | |
3612 | ANYOF_BITMAP_SET(ret, value); | |
3613 | } | |
1aa99e6b | 3614 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3615 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsSpace\n"); |
aaa51d5e | 3616 | break; |
73b437c8 JH |
3617 | case ANYOF_PUNCT: |
3618 | if (LOC) | |
936ed897 | 3619 | ANYOF_CLASS_SET(ret, ANYOF_PUNCT); |
73b437c8 JH |
3620 | else { |
3621 | for (value = 0; value < 256; value++) | |
3622 | if (isPUNCT(value)) | |
936ed897 | 3623 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3624 | } |
1aa99e6b | 3625 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3626 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsPunct\n"); |
73b437c8 JH |
3627 | break; |
3628 | case ANYOF_NPUNCT: | |
3629 | if (LOC) | |
936ed897 | 3630 | ANYOF_CLASS_SET(ret, ANYOF_NPUNCT); |
73b437c8 JH |
3631 | else { |
3632 | for (value = 0; value < 256; value++) | |
3633 | if (!isPUNCT(value)) | |
936ed897 | 3634 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3635 | } |
1aa99e6b | 3636 | dont_optimize_invert = TRUE; |
ffc61ed2 JH |
3637 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsPunct\n"); |
3638 | break; | |
3639 | case ANYOF_SPACE: | |
3640 | if (LOC) | |
3641 | ANYOF_CLASS_SET(ret, ANYOF_SPACE); | |
3642 | else { | |
3643 | for (value = 0; value < 256; value++) | |
3644 | if (isSPACE(value)) | |
3645 | ANYOF_BITMAP_SET(ret, value); | |
3646 | } | |
1aa99e6b | 3647 | dont_optimize_invert = TRUE; |
ffc61ed2 JH |
3648 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsSpacePerl\n"); |
3649 | break; | |
3650 | case ANYOF_NSPACE: | |
3651 | if (LOC) | |
3652 | ANYOF_CLASS_SET(ret, ANYOF_NSPACE); | |
3653 | else { | |
3654 | for (value = 0; value < 256; value++) | |
3655 | if (!isSPACE(value)) | |
3656 | ANYOF_BITMAP_SET(ret, value); | |
3657 | } | |
1aa99e6b | 3658 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3659 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsSpacePerl\n"); |
73b437c8 JH |
3660 | break; |
3661 | case ANYOF_UPPER: | |
3662 | if (LOC) | |
936ed897 | 3663 | ANYOF_CLASS_SET(ret, ANYOF_UPPER); |
73b437c8 JH |
3664 | else { |
3665 | for (value = 0; value < 256; value++) | |
3666 | if (isUPPER(value)) | |
936ed897 | 3667 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3668 | } |
1aa99e6b | 3669 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3670 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsUpper\n"); |
73b437c8 JH |
3671 | break; |
3672 | case ANYOF_NUPPER: | |
3673 | if (LOC) | |
936ed897 | 3674 | ANYOF_CLASS_SET(ret, ANYOF_NUPPER); |
73b437c8 JH |
3675 | else { |
3676 | for (value = 0; value < 256; value++) | |
3677 | if (!isUPPER(value)) | |
936ed897 | 3678 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3679 | } |
1aa99e6b | 3680 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3681 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsUpper\n"); |
73b437c8 JH |
3682 | break; |
3683 | case ANYOF_XDIGIT: | |
3684 | if (LOC) | |
936ed897 | 3685 | ANYOF_CLASS_SET(ret, ANYOF_XDIGIT); |
73b437c8 JH |
3686 | else { |
3687 | for (value = 0; value < 256; value++) | |
3688 | if (isXDIGIT(value)) | |
936ed897 | 3689 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3690 | } |
1aa99e6b | 3691 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3692 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsXDigit\n"); |
73b437c8 JH |
3693 | break; |
3694 | case ANYOF_NXDIGIT: | |
3695 | if (LOC) | |
936ed897 | 3696 | ANYOF_CLASS_SET(ret, ANYOF_NXDIGIT); |
73b437c8 JH |
3697 | else { |
3698 | for (value = 0; value < 256; value++) | |
3699 | if (!isXDIGIT(value)) | |
936ed897 | 3700 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3701 | } |
1aa99e6b | 3702 | dont_optimize_invert = TRUE; |
ffc61ed2 | 3703 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsXDigit\n"); |
73b437c8 JH |
3704 | break; |
3705 | default: | |
b45f050a | 3706 | vFAIL("Invalid [::] class"); |
73b437c8 | 3707 | break; |
b8c5462f | 3708 | } |
b8c5462f | 3709 | if (LOC) |
936ed897 | 3710 | ANYOF_FLAGS(ret) |= ANYOF_CLASS; |
73b437c8 | 3711 | continue; |
a0d0e21e | 3712 | } |
ffc61ed2 JH |
3713 | } /* end of namedclass \blah */ |
3714 | ||
a0d0e21e | 3715 | if (range) { |
73b437c8 | 3716 | if (lastvalue > value) /* b-a */ { |
b45f050a | 3717 | Simple_vFAIL4("Invalid [] range \"%*.*s\"", |
830247a4 IZ |
3718 | RExC_parse - rangebegin, |
3719 | RExC_parse - rangebegin, | |
b45f050a | 3720 | rangebegin); |
73b437c8 | 3721 | } |
ffc61ed2 | 3722 | range = 0; /* not a true range */ |
a0d0e21e LW |
3723 | } |
3724 | else { | |
ffc61ed2 | 3725 | lastvalue = value; /* save the beginning of the range */ |
830247a4 IZ |
3726 | if (*RExC_parse == '-' && RExC_parse+1 < RExC_end && |
3727 | RExC_parse[1] != ']') { | |
3728 | RExC_parse++; | |
ffc61ed2 JH |
3729 | |
3730 | /* a bad range like \w-, [:word:]- ? */ | |
3731 | if (namedclass > OOB_NAMEDCLASS) { | |
e476b1b5 | 3732 | if (ckWARN(WARN_REGEXP)) |
830247a4 | 3733 | vWARN4(RExC_parse, |
b45f050a | 3734 | "False [] range \"%*.*s\"", |
830247a4 IZ |
3735 | RExC_parse - rangebegin, |
3736 | RExC_parse - rangebegin, | |
b45f050a | 3737 | rangebegin); |
73b437c8 | 3738 | if (!SIZE_ONLY) |
936ed897 | 3739 | ANYOF_BITMAP_SET(ret, '-'); |
73b437c8 | 3740 | } else |
ffc61ed2 JH |
3741 | range = 1; /* yeah, it's a range! */ |
3742 | continue; /* but do it the next time */ | |
a0d0e21e | 3743 | } |
a687059c | 3744 | } |
ffc61ed2 | 3745 | |
93733859 | 3746 | /* now is the next time */ |
ae5c130c | 3747 | if (!SIZE_ONLY) { |
ffc61ed2 | 3748 | if (lastvalue < 256 && value < 256) { |
93733859 | 3749 | #ifndef ASCIIish /* EBCDIC, for example. */ |
ffc61ed2 JH |
3750 | if ((isLOWER(lastvalue) && isLOWER(value)) || |
3751 | (isUPPER(lastvalue) && isUPPER(value))) | |
3752 | { | |
3753 | IV i; | |
3754 | if (isLOWER(lastvalue)) { | |
3755 | for (i = lastvalue; i <= value; i++) | |
3756 | if (isLOWER(i)) | |
3757 | ANYOF_BITMAP_SET(ret, i); | |
3758 | } else { | |
3759 | for (i = lastvalue; i <= value; i++) | |
3760 | if (isUPPER(i)) | |
3761 | ANYOF_BITMAP_SET(ret, i); | |
3762 | } | |
8ada0baa | 3763 | } |
ffc61ed2 | 3764 | else |
8ada0baa | 3765 | #endif |
ffc61ed2 JH |
3766 | for ( ; lastvalue <= value; lastvalue++) |
3767 | ANYOF_BITMAP_SET(ret, lastvalue); | |
3768 | } else { | |
3769 | ANYOF_FLAGS(ret) |= ANYOF_UNICODE; | |
3770 | if (lastvalue < value) | |
3771 | Perl_sv_catpvf(aTHX_ listsv, "%04"UVxf"\t%04"UVxf"\n", | |
3772 | (UV)lastvalue, (UV)value); | |
3773 | else | |
3774 | Perl_sv_catpvf(aTHX_ listsv, "%04"UVxf"\n", | |
3775 | (UV)value); | |
3776 | } | |
8ada0baa | 3777 | } |
ffc61ed2 JH |
3778 | |
3779 | range = 0; /* this range (if it was one) is done now */ | |
a0d0e21e | 3780 | } |
ffc61ed2 | 3781 | |
936ed897 IZ |
3782 | if (need_class) { |
3783 | if (SIZE_ONLY) | |
830247a4 | 3784 | RExC_size += ANYOF_CLASS_ADD_SKIP; |
936ed897 | 3785 | else |
830247a4 | 3786 | RExC_emit += ANYOF_CLASS_ADD_SKIP; |
936ed897 | 3787 | } |
ffc61ed2 | 3788 | |
ae5c130c | 3789 | /* optimize case-insensitive simple patterns (e.g. /[a-z]/i) */ |
b8c5462f | 3790 | if (!SIZE_ONLY && |
ffc61ed2 JH |
3791 | (ANYOF_FLAGS(ret) & |
3792 | /* If the only flag is folding (plus possibly inversion). */ | |
3793 | (ANYOF_FLAGS_ALL ^ ANYOF_INVERT) == ANYOF_FOLD)) { | |
a0ed51b3 | 3794 | for (value = 0; value < 256; ++value) { |
936ed897 | 3795 | if (ANYOF_BITMAP_TEST(ret, value)) { |
ffc61ed2 JH |
3796 | IV fold = PL_fold[value]; |
3797 | ||
3798 | if (fold != value) | |
3799 | ANYOF_BITMAP_SET(ret, fold); | |
ae5c130c GS |
3800 | } |
3801 | } | |
936ed897 | 3802 | ANYOF_FLAGS(ret) &= ~ANYOF_FOLD; |
ae5c130c | 3803 | } |
ffc61ed2 | 3804 | |
ae5c130c | 3805 | /* optimize inverted simple patterns (e.g. [^a-z]) */ |
1aa99e6b | 3806 | if (!SIZE_ONLY && !dont_optimize_invert && |
ffc61ed2 JH |
3807 | /* If the only flag is inversion. */ |
3808 | (ANYOF_FLAGS(ret) & ANYOF_FLAGS_ALL) == ANYOF_INVERT) { | |
b8c5462f | 3809 | for (value = 0; value < ANYOF_BITMAP_SIZE; ++value) |
936ed897 | 3810 | ANYOF_BITMAP(ret)[value] ^= ANYOF_FLAGS_ALL; |
1aa99e6b | 3811 | ANYOF_FLAGS(ret) = ANYOF_UNICODE_ALL; |
ae5c130c | 3812 | } |
a0d0e21e | 3813 | |
b81d288d | 3814 | if (!SIZE_ONLY) { |
fde631ed | 3815 | AV *av = newAV(); |
ffc61ed2 JH |
3816 | SV *rv; |
3817 | ||
3818 | av_store(av, 0, listsv); | |
3819 | av_store(av, 1, NULL); | |
3820 | rv = newRV_noinc((SV*)av); | |
19860706 | 3821 | n = add_data(pRExC_state, 1, "s"); |
830247a4 | 3822 | RExC_rx->data->data[n] = (void*)rv; |
ffc61ed2 | 3823 | ARG_SET(ret, n); |
a0ed51b3 LW |
3824 | } |
3825 | ||
3826 | return ret; | |
3827 | } | |
3828 | ||
76e3520e | 3829 | STATIC char* |
830247a4 | 3830 | S_nextchar(pTHX_ RExC_state_t *pRExC_state) |
a0d0e21e | 3831 | { |
830247a4 | 3832 | char* retval = RExC_parse++; |
a0d0e21e | 3833 | |
4633a7c4 | 3834 | for (;;) { |
830247a4 IZ |
3835 | if (*RExC_parse == '(' && RExC_parse[1] == '?' && |
3836 | RExC_parse[2] == '#') { | |
3837 | while (*RExC_parse && *RExC_parse != ')') | |
3838 | RExC_parse++; | |
3839 | RExC_parse++; | |
4633a7c4 LW |
3840 | continue; |
3841 | } | |
830247a4 IZ |
3842 | if (RExC_flags16 & PMf_EXTENDED) { |
3843 | if (isSPACE(*RExC_parse)) { | |
3844 | RExC_parse++; | |
748a9306 LW |
3845 | continue; |
3846 | } | |
830247a4 IZ |
3847 | else if (*RExC_parse == '#') { |
3848 | while (*RExC_parse && *RExC_parse != '\n') | |
3849 | RExC_parse++; | |
3850 | RExC_parse++; | |
748a9306 LW |
3851 | continue; |
3852 | } | |
748a9306 | 3853 | } |
4633a7c4 | 3854 | return retval; |
a0d0e21e | 3855 | } |
a687059c LW |
3856 | } |
3857 | ||
3858 | /* | |
c277df42 | 3859 | - reg_node - emit a node |
a0d0e21e | 3860 | */ |
76e3520e | 3861 | STATIC regnode * /* Location. */ |
830247a4 | 3862 | S_reg_node(pTHX_ RExC_state_t *pRExC_state, U8 op) |
a687059c | 3863 | { |
c277df42 IZ |
3864 | register regnode *ret; |
3865 | register regnode *ptr; | |
a687059c | 3866 | |
830247a4 | 3867 | ret = RExC_emit; |
c277df42 | 3868 | if (SIZE_ONLY) { |
830247a4 IZ |
3869 | SIZE_ALIGN(RExC_size); |
3870 | RExC_size += 1; | |
a0d0e21e LW |
3871 | return(ret); |
3872 | } | |
a687059c | 3873 | |
c277df42 | 3874 | NODE_ALIGN_FILL(ret); |
a0d0e21e | 3875 | ptr = ret; |
c277df42 | 3876 | FILL_ADVANCE_NODE(ptr, op); |
830247a4 | 3877 | RExC_emit = ptr; |
a687059c | 3878 | |
a0d0e21e | 3879 | return(ret); |
a687059c LW |
3880 | } |
3881 | ||
3882 | /* | |
a0d0e21e LW |
3883 | - reganode - emit a node with an argument |
3884 | */ | |
76e3520e | 3885 | STATIC regnode * /* Location. */ |
830247a4 | 3886 | S_reganode(pTHX_ RExC_state_t *pRExC_state, U8 op, U32 arg) |
fe14fcc3 | 3887 | { |
c277df42 IZ |
3888 | register regnode *ret; |
3889 | register regnode *ptr; | |
fe14fcc3 | 3890 | |
830247a4 | 3891 | ret = RExC_emit; |
c277df42 | 3892 | if (SIZE_ONLY) { |
830247a4 IZ |
3893 | SIZE_ALIGN(RExC_size); |
3894 | RExC_size += 2; | |
a0d0e21e LW |
3895 | return(ret); |
3896 | } | |
fe14fcc3 | 3897 | |
c277df42 | 3898 | NODE_ALIGN_FILL(ret); |
a0d0e21e | 3899 | ptr = ret; |
c277df42 | 3900 | FILL_ADVANCE_NODE_ARG(ptr, op, arg); |
830247a4 | 3901 | RExC_emit = ptr; |
fe14fcc3 | 3902 | |
a0d0e21e | 3903 | return(ret); |
fe14fcc3 LW |
3904 | } |
3905 | ||
3906 | /* | |
cd439c50 | 3907 | - reguni - emit (if appropriate) a Unicode character |
a0ed51b3 LW |
3908 | */ |
3909 | STATIC void | |
830247a4 | 3910 | S_reguni(pTHX_ RExC_state_t *pRExC_state, UV uv, char* s, STRLEN* lenp) |
a0ed51b3 | 3911 | { |
ad391ad9 | 3912 | *lenp = SIZE_ONLY ? UNISKIP(uv) : (uv_to_utf8((U8*)s, uv) - (U8*)s); |
a0ed51b3 LW |
3913 | } |
3914 | ||
3915 | /* | |
a0d0e21e LW |
3916 | - reginsert - insert an operator in front of already-emitted operand |
3917 | * | |
3918 | * Means relocating the operand. | |
3919 | */ | |
76e3520e | 3920 | STATIC void |
830247a4 | 3921 | S_reginsert(pTHX_ RExC_state_t *pRExC_state, U8 op, regnode *opnd) |
a687059c | 3922 | { |
c277df42 IZ |
3923 | register regnode *src; |
3924 | register regnode *dst; | |
3925 | register regnode *place; | |
3926 | register int offset = regarglen[(U8)op]; | |
b81d288d | 3927 | |
22c35a8c | 3928 | /* (PL_regkind[(U8)op] == CURLY ? EXTRA_STEP_2ARGS : 0); */ |
c277df42 IZ |
3929 | |
3930 | if (SIZE_ONLY) { | |
830247a4 | 3931 | RExC_size += NODE_STEP_REGNODE + offset; |
a0d0e21e LW |
3932 | return; |
3933 | } | |
a687059c | 3934 | |
830247a4 IZ |
3935 | src = RExC_emit; |
3936 | RExC_emit += NODE_STEP_REGNODE + offset; | |
3937 | dst = RExC_emit; | |
a0d0e21e | 3938 | while (src > opnd) |
c277df42 | 3939 | StructCopy(--src, --dst, regnode); |
a0d0e21e LW |
3940 | |
3941 | place = opnd; /* Op node, where operand used to be. */ | |
c277df42 IZ |
3942 | src = NEXTOPER(place); |
3943 | FILL_ADVANCE_NODE(place, op); | |
3944 | Zero(src, offset, regnode); | |
a687059c LW |
3945 | } |
3946 | ||
3947 | /* | |
c277df42 | 3948 | - regtail - set the next-pointer at the end of a node chain of p to val. |
a0d0e21e | 3949 | */ |
76e3520e | 3950 | STATIC void |
830247a4 | 3951 | S_regtail(pTHX_ RExC_state_t *pRExC_state, regnode *p, regnode *val) |
a687059c | 3952 | { |
c277df42 IZ |
3953 | register regnode *scan; |
3954 | register regnode *temp; | |
a0d0e21e | 3955 | |
c277df42 | 3956 | if (SIZE_ONLY) |
a0d0e21e LW |
3957 | return; |
3958 | ||
3959 | /* Find last node. */ | |
3960 | scan = p; | |
3961 | for (;;) { | |
3962 | temp = regnext(scan); | |
3963 | if (temp == NULL) | |
3964 | break; | |
3965 | scan = temp; | |
3966 | } | |
a687059c | 3967 | |
c277df42 IZ |
3968 | if (reg_off_by_arg[OP(scan)]) { |
3969 | ARG_SET(scan, val - scan); | |
a0ed51b3 LW |
3970 | } |
3971 | else { | |
c277df42 IZ |
3972 | NEXT_OFF(scan) = val - scan; |
3973 | } | |
a687059c LW |
3974 | } |
3975 | ||
3976 | /* | |
a0d0e21e LW |
3977 | - regoptail - regtail on operand of first argument; nop if operandless |
3978 | */ | |
76e3520e | 3979 | STATIC void |
830247a4 | 3980 | S_regoptail(pTHX_ RExC_state_t *pRExC_state, regnode *p, regnode *val) |
a687059c | 3981 | { |
a0d0e21e | 3982 | /* "Operandless" and "op != BRANCH" are synonymous in practice. */ |
c277df42 IZ |
3983 | if (p == NULL || SIZE_ONLY) |
3984 | return; | |
22c35a8c | 3985 | if (PL_regkind[(U8)OP(p)] == BRANCH) { |
830247a4 | 3986 | regtail(pRExC_state, NEXTOPER(p), val); |
a0ed51b3 | 3987 | } |
22c35a8c | 3988 | else if ( PL_regkind[(U8)OP(p)] == BRANCHJ) { |
830247a4 | 3989 | regtail(pRExC_state, NEXTOPER(NEXTOPER(p)), val); |
a0ed51b3 LW |
3990 | } |
3991 | else | |
a0d0e21e | 3992 | return; |
a687059c LW |
3993 | } |
3994 | ||
3995 | /* | |
3996 | - regcurly - a little FSA that accepts {\d+,?\d*} | |
3997 | */ | |
79072805 | 3998 | STATIC I32 |
cea2e8a9 | 3999 | S_regcurly(pTHX_ register char *s) |
a687059c LW |
4000 | { |
4001 | if (*s++ != '{') | |
4002 | return FALSE; | |
f0fcb552 | 4003 | if (!isDIGIT(*s)) |
a687059c | 4004 | return FALSE; |
f0fcb552 | 4005 | while (isDIGIT(*s)) |
a687059c LW |
4006 | s++; |
4007 | if (*s == ',') | |
4008 | s++; | |
f0fcb552 | 4009 | while (isDIGIT(*s)) |
a687059c LW |
4010 | s++; |
4011 | if (*s != '}') | |
4012 | return FALSE; | |
4013 | return TRUE; | |
4014 | } | |
4015 | ||
a687059c | 4016 | |
76e3520e | 4017 | STATIC regnode * |
cea2e8a9 | 4018 | S_dumpuntil(pTHX_ regnode *start, regnode *node, regnode *last, SV* sv, I32 l) |
c277df42 | 4019 | { |
35ff7856 | 4020 | #ifdef DEBUGGING |
f248d071 | 4021 | register U8 op = EXACT; /* Arbitrary non-END op. */ |
155aba94 | 4022 | register regnode *next; |
c277df42 IZ |
4023 | |
4024 | while (op != END && (!last || node < last)) { | |
4025 | /* While that wasn't END last time... */ | |
4026 | ||
4027 | NODE_ALIGN(node); | |
4028 | op = OP(node); | |
4029 | if (op == CLOSE) | |
4030 | l--; | |
4031 | next = regnext(node); | |
4032 | /* Where, what. */ | |
4033 | if (OP(node) == OPTIMIZED) | |
4034 | goto after_print; | |
4035 | regprop(sv, node); | |
b900a521 | 4036 | PerlIO_printf(Perl_debug_log, "%4"IVdf":%*s%s", (IV)(node - start), |
f1dbda3d | 4037 | (int)(2*l + 1), "", SvPVX(sv)); |
c277df42 IZ |
4038 | if (next == NULL) /* Next ptr. */ |
4039 | PerlIO_printf(Perl_debug_log, "(0)"); | |
b81d288d | 4040 | else |
b900a521 | 4041 | PerlIO_printf(Perl_debug_log, "(%"IVdf")", (IV)(next - start)); |
c277df42 IZ |
4042 | (void)PerlIO_putc(Perl_debug_log, '\n'); |
4043 | after_print: | |
22c35a8c | 4044 | if (PL_regkind[(U8)op] == BRANCHJ) { |
b81d288d AB |
4045 | register regnode *nnode = (OP(next) == LONGJMP |
4046 | ? regnext(next) | |
c277df42 IZ |
4047 | : next); |
4048 | if (last && nnode > last) | |
4049 | nnode = last; | |
4050 | node = dumpuntil(start, NEXTOPER(NEXTOPER(node)), nnode, sv, l + 1); | |
a0ed51b3 | 4051 | } |
22c35a8c | 4052 | else if (PL_regkind[(U8)op] == BRANCH) { |
c277df42 | 4053 | node = dumpuntil(start, NEXTOPER(node), next, sv, l + 1); |
a0ed51b3 LW |
4054 | } |
4055 | else if ( op == CURLY) { /* `next' might be very big: optimizer */ | |
c277df42 IZ |
4056 | node = dumpuntil(start, NEXTOPER(node) + EXTRA_STEP_2ARGS, |
4057 | NEXTOPER(node) + EXTRA_STEP_2ARGS + 1, sv, l + 1); | |
a0ed51b3 | 4058 | } |
22c35a8c | 4059 | else if (PL_regkind[(U8)op] == CURLY && op != CURLYX) { |
c277df42 IZ |
4060 | node = dumpuntil(start, NEXTOPER(node) + EXTRA_STEP_2ARGS, |
4061 | next, sv, l + 1); | |
a0ed51b3 LW |
4062 | } |
4063 | else if ( op == PLUS || op == STAR) { | |
c277df42 | 4064 | node = dumpuntil(start, NEXTOPER(node), NEXTOPER(node) + 1, sv, l + 1); |
a0ed51b3 LW |
4065 | } |
4066 | else if (op == ANYOF) { | |
c277df42 | 4067 | node = NEXTOPER(node); |
936ed897 | 4068 | node += ANYOF_SKIP; |
a0ed51b3 | 4069 | } |
22c35a8c | 4070 | else if (PL_regkind[(U8)op] == EXACT) { |
c277df42 | 4071 | /* Literal string, where present. */ |
cd439c50 | 4072 | node += NODE_SZ_STR(node) - 1; |
c277df42 | 4073 | node = NEXTOPER(node); |
a0ed51b3 LW |
4074 | } |
4075 | else { | |
c277df42 IZ |
4076 | node = NEXTOPER(node); |
4077 | node += regarglen[(U8)op]; | |
4078 | } | |
4079 | if (op == CURLYX || op == OPEN) | |
4080 | l++; | |
4081 | else if (op == WHILEM) | |
4082 | l--; | |
4083 | } | |
17c3b450 | 4084 | #endif /* DEBUGGING */ |
c277df42 IZ |
4085 | return node; |
4086 | } | |
4087 | ||
a687059c | 4088 | /* |
fd181c75 | 4089 | - regdump - dump a regexp onto Perl_debug_log in vaguely comprehensible form |
a687059c LW |
4090 | */ |
4091 | void | |
864dbfa3 | 4092 | Perl_regdump(pTHX_ regexp *r) |
a687059c | 4093 | { |
35ff7856 | 4094 | #ifdef DEBUGGING |
46fc3d4c | 4095 | SV *sv = sv_newmortal(); |
a687059c | 4096 | |
c277df42 | 4097 | (void)dumpuntil(r->program, r->program + 1, NULL, sv, 0); |
a0d0e21e LW |
4098 | |
4099 | /* Header fields of interest. */ | |
c277df42 | 4100 | if (r->anchored_substr) |
7b0972df | 4101 | PerlIO_printf(Perl_debug_log, |
b81d288d | 4102 | "anchored `%s%.*s%s'%s at %"IVdf" ", |
3280af22 | 4103 | PL_colors[0], |
7b0972df | 4104 | (int)(SvCUR(r->anchored_substr) - (SvTAIL(r->anchored_substr)!=0)), |
b81d288d | 4105 | SvPVX(r->anchored_substr), |
3280af22 | 4106 | PL_colors[1], |
c277df42 | 4107 | SvTAIL(r->anchored_substr) ? "$" : "", |
7b0972df | 4108 | (IV)r->anchored_offset); |
c277df42 | 4109 | if (r->float_substr) |
7b0972df | 4110 | PerlIO_printf(Perl_debug_log, |
b81d288d | 4111 | "floating `%s%.*s%s'%s at %"IVdf"..%"UVuf" ", |
3280af22 | 4112 | PL_colors[0], |
b81d288d | 4113 | (int)(SvCUR(r->float_substr) - (SvTAIL(r->float_substr)!=0)), |
2c2d71f5 | 4114 | SvPVX(r->float_substr), |
3280af22 | 4115 | PL_colors[1], |
c277df42 | 4116 | SvTAIL(r->float_substr) ? "$" : "", |
7b0972df | 4117 | (IV)r->float_min_offset, (UV)r->float_max_offset); |
c277df42 | 4118 | if (r->check_substr) |
b81d288d AB |
4119 | PerlIO_printf(Perl_debug_log, |
4120 | r->check_substr == r->float_substr | |
c277df42 IZ |
4121 | ? "(checking floating" : "(checking anchored"); |
4122 | if (r->reganch & ROPT_NOSCAN) | |
4123 | PerlIO_printf(Perl_debug_log, " noscan"); | |
4124 | if (r->reganch & ROPT_CHECK_ALL) | |
4125 | PerlIO_printf(Perl_debug_log, " isall"); | |
4126 | if (r->check_substr) | |
4127 | PerlIO_printf(Perl_debug_log, ") "); | |
4128 | ||
46fc3d4c | 4129 | if (r->regstclass) { |
4130 | regprop(sv, r->regstclass); | |
4131 | PerlIO_printf(Perl_debug_log, "stclass `%s' ", SvPVX(sv)); | |
4132 | } | |
774d564b | 4133 | if (r->reganch & ROPT_ANCH) { |
4134 | PerlIO_printf(Perl_debug_log, "anchored"); | |
4135 | if (r->reganch & ROPT_ANCH_BOL) | |
4136 | PerlIO_printf(Perl_debug_log, "(BOL)"); | |
c277df42 IZ |
4137 | if (r->reganch & ROPT_ANCH_MBOL) |
4138 | PerlIO_printf(Perl_debug_log, "(MBOL)"); | |
cad2e5aa JH |
4139 | if (r->reganch & ROPT_ANCH_SBOL) |
4140 | PerlIO_printf(Perl_debug_log, "(SBOL)"); | |
774d564b | 4141 | if (r->reganch & ROPT_ANCH_GPOS) |
4142 | PerlIO_printf(Perl_debug_log, "(GPOS)"); | |
4143 | PerlIO_putc(Perl_debug_log, ' '); | |
4144 | } | |
c277df42 IZ |
4145 | if (r->reganch & ROPT_GPOS_SEEN) |
4146 | PerlIO_printf(Perl_debug_log, "GPOS "); | |
a0d0e21e | 4147 | if (r->reganch & ROPT_SKIP) |
760ac839 | 4148 | PerlIO_printf(Perl_debug_log, "plus "); |
a0d0e21e | 4149 | if (r->reganch & ROPT_IMPLICIT) |
760ac839 | 4150 | PerlIO_printf(Perl_debug_log, "implicit "); |
760ac839 | 4151 | PerlIO_printf(Perl_debug_log, "minlen %ld ", (long) r->minlen); |
ce862d02 IZ |
4152 | if (r->reganch & ROPT_EVAL_SEEN) |
4153 | PerlIO_printf(Perl_debug_log, "with eval "); | |
760ac839 | 4154 | PerlIO_printf(Perl_debug_log, "\n"); |
17c3b450 | 4155 | #endif /* DEBUGGING */ |
a687059c LW |
4156 | } |
4157 | ||
653099ff GS |
4158 | STATIC void |
4159 | S_put_byte(pTHX_ SV *sv, int c) | |
4160 | { | |
ffc61ed2 | 4161 | if (isCNTRL(c) || c == 127 || c == 255 || !isPRINT(c)) |
653099ff GS |
4162 | Perl_sv_catpvf(aTHX_ sv, "\\%o", c); |
4163 | else if (c == '-' || c == ']' || c == '\\' || c == '^') | |
4164 | Perl_sv_catpvf(aTHX_ sv, "\\%c", c); | |
4165 | else | |
4166 | Perl_sv_catpvf(aTHX_ sv, "%c", c); | |
4167 | } | |
4168 | ||
a687059c | 4169 | /* |
a0d0e21e LW |
4170 | - regprop - printable representation of opcode |
4171 | */ | |
46fc3d4c | 4172 | void |
864dbfa3 | 4173 | Perl_regprop(pTHX_ SV *sv, regnode *o) |
a687059c | 4174 | { |
35ff7856 | 4175 | #ifdef DEBUGGING |
9b155405 | 4176 | register int k; |
a0d0e21e | 4177 | |
54dc92de | 4178 | sv_setpvn(sv, "", 0); |
9b155405 | 4179 | if (OP(o) >= reg_num) /* regnode.type is unsigned */ |
830247a4 IZ |
4180 | /* It would be nice to FAIL() here, but this may be called from |
4181 | regexec.c, and it would be hard to supply pRExC_state. */ | |
4182 | Perl_croak(aTHX_ "Corrupted regexp opcode"); | |
9b155405 IZ |
4183 | sv_catpv(sv, (char*)reg_name[OP(o)]); /* Take off const! */ |
4184 | ||
4185 | k = PL_regkind[(U8)OP(o)]; | |
4186 | ||
4187 | if (k == EXACT) | |
7821416a | 4188 | Perl_sv_catpvf(aTHX_ sv, " <%s%.*s%s>", PL_colors[0], |
cd439c50 | 4189 | STR_LEN(o), STRING(o), PL_colors[1]); |
9b155405 | 4190 | else if (k == CURLY) { |
cb434fcc | 4191 | if (OP(o) == CURLYM || OP(o) == CURLYN || OP(o) == CURLYX) |
cea2e8a9 GS |
4192 | Perl_sv_catpvf(aTHX_ sv, "[%d]", o->flags); /* Parenth number */ |
4193 | Perl_sv_catpvf(aTHX_ sv, " {%d,%d}", ARG1(o), ARG2(o)); | |
a0d0e21e | 4194 | } |
2c2d71f5 JH |
4195 | else if (k == WHILEM && o->flags) /* Ordinal/of */ |
4196 | Perl_sv_catpvf(aTHX_ sv, "[%d/%d]", o->flags & 0xf, o->flags>>4); | |
9b155405 | 4197 | else if (k == REF || k == OPEN || k == CLOSE || k == GROUPP ) |
894356b3 | 4198 | Perl_sv_catpvf(aTHX_ sv, "%d", (int)ARG(o)); /* Parenth number */ |
9b155405 | 4199 | else if (k == LOGICAL) |
04ebc1ab | 4200 | Perl_sv_catpvf(aTHX_ sv, "[%d]", o->flags); /* 2: embedded, otherwise 1 */ |
653099ff GS |
4201 | else if (k == ANYOF) { |
4202 | int i, rangestart = -1; | |
ffc61ed2 | 4203 | U8 flags = ANYOF_FLAGS(o); |
19860706 JH |
4204 | const char * const anyofs[] = { /* Should be syncronized with |
4205 | * ANYOF_ #xdefines in regcomp.h */ | |
653099ff GS |
4206 | "\\w", |
4207 | "\\W", | |
4208 | "\\s", | |
4209 | "\\S", | |
4210 | "\\d", | |
4211 | "\\D", | |
4212 | "[:alnum:]", | |
4213 | "[:^alnum:]", | |
4214 | "[:alpha:]", | |
4215 | "[:^alpha:]", | |
4216 | "[:ascii:]", | |
4217 | "[:^ascii:]", | |
4218 | "[:ctrl:]", | |
4219 | "[:^ctrl:]", | |
4220 | "[:graph:]", | |
4221 | "[:^graph:]", | |
4222 | "[:lower:]", | |
4223 | "[:^lower:]", | |
4224 | "[:print:]", | |
4225 | "[:^print:]", | |
4226 | "[:punct:]", | |
4227 | "[:^punct:]", | |
4228 | "[:upper:]", | |
aaa51d5e | 4229 | "[:^upper:]", |
653099ff | 4230 | "[:xdigit:]", |
aaa51d5e JF |
4231 | "[:^xdigit:]", |
4232 | "[:space:]", | |
4233 | "[:^space:]", | |
4234 | "[:blank:]", | |
4235 | "[:^blank:]" | |
653099ff GS |
4236 | }; |
4237 | ||
19860706 | 4238 | if (flags & ANYOF_LOCALE) |
653099ff | 4239 | sv_catpv(sv, "{loc}"); |
19860706 | 4240 | if (flags & ANYOF_FOLD) |
653099ff GS |
4241 | sv_catpv(sv, "{i}"); |
4242 | Perl_sv_catpvf(aTHX_ sv, "[%s", PL_colors[0]); | |
19860706 | 4243 | if (flags & ANYOF_INVERT) |
653099ff | 4244 | sv_catpv(sv, "^"); |
ffc61ed2 JH |
4245 | for (i = 0; i <= 256; i++) { |
4246 | if (i < 256 && ANYOF_BITMAP_TEST(o,i)) { | |
4247 | if (rangestart == -1) | |
4248 | rangestart = i; | |
4249 | } else if (rangestart != -1) { | |
4250 | if (i <= rangestart + 3) | |
4251 | for (; rangestart < i; rangestart++) | |
653099ff | 4252 | put_byte(sv, rangestart); |
ffc61ed2 JH |
4253 | else { |
4254 | put_byte(sv, rangestart); | |
4255 | sv_catpv(sv, "-"); | |
4256 | put_byte(sv, i - 1); | |
653099ff | 4257 | } |
ffc61ed2 | 4258 | rangestart = -1; |
653099ff | 4259 | } |
847a199f | 4260 | } |
ffc61ed2 JH |
4261 | |
4262 | if (o->flags & ANYOF_CLASS) | |
4263 | for (i = 0; i < sizeof(anyofs)/sizeof(char*); i++) | |
4264 | if (ANYOF_CLASS_TEST(o,i)) | |
4265 | sv_catpv(sv, anyofs[i]); | |
4266 | ||
4267 | if (flags & ANYOF_UNICODE) | |
4268 | sv_catpv(sv, "{unicode}"); | |
1aa99e6b IH |
4269 | else if (flags & ANYOF_UNICODE_ALL) |
4270 | sv_catpv(sv, "{all-unicode}"); | |
ffc61ed2 JH |
4271 | |
4272 | { | |
4273 | SV *lv; | |
4274 | SV *sw = regclass_swash(o, FALSE, &lv); | |
b81d288d | 4275 | |
ffc61ed2 JH |
4276 | if (lv) { |
4277 | if (sw) { | |
4278 | UV i; | |
4279 | U8 s[UTF8_MAXLEN+1]; | |
b81d288d | 4280 | |
ffc61ed2 JH |
4281 | for (i = 0; i <= 256; i++) { /* just the first 256 */ |
4282 | U8 *e = uv_to_utf8(s, i); | |
4283 | ||
4284 | if (i < 256 && swash_fetch(sw, s)) { | |
4285 | if (rangestart == -1) | |
4286 | rangestart = i; | |
4287 | } else if (rangestart != -1) { | |
4288 | U8 *p; | |
b81d288d | 4289 | |
ffc61ed2 JH |
4290 | if (i <= rangestart + 3) |
4291 | for (; rangestart < i; rangestart++) { | |
4292 | for(e = uv_to_utf8(s, rangestart), p = s; p < e; p++) | |
4293 | put_byte(sv, *p); | |
4294 | } | |
4295 | else { | |
4296 | for (e = uv_to_utf8(s, rangestart), p = s; p < e; p++) | |
4297 | put_byte(sv, *p); | |
4298 | sv_catpv(sv, "-"); | |
4299 | for (e = uv_to_utf8(s, i - 1), p = s; p < e; p++) | |
4300 | put_byte(sv, *p); | |
4301 | } | |
4302 | rangestart = -1; | |
4303 | } | |
19860706 | 4304 | } |
ffc61ed2 JH |
4305 | |
4306 | sv_catpv(sv, "..."); /* et cetera */ | |
19860706 | 4307 | } |
fde631ed | 4308 | |
ffc61ed2 JH |
4309 | { |
4310 | char *s = savepv(SvPVX(lv)); | |
4311 | char *origs = s; | |
b81d288d | 4312 | |
ffc61ed2 | 4313 | while(*s && *s != '\n') s++; |
b81d288d | 4314 | |
ffc61ed2 JH |
4315 | if (*s == '\n') { |
4316 | char *t = ++s; | |
4317 | ||
4318 | while (*s) { | |
4319 | if (*s == '\n') | |
4320 | *s = ' '; | |
4321 | s++; | |
4322 | } | |
4323 | if (s[-1] == ' ') | |
4324 | s[-1] = 0; | |
4325 | ||
4326 | sv_catpv(sv, t); | |
fde631ed | 4327 | } |
b81d288d | 4328 | |
ffc61ed2 | 4329 | Safefree(origs); |
fde631ed JH |
4330 | } |
4331 | } | |
653099ff | 4332 | } |
ffc61ed2 | 4333 | |
653099ff GS |
4334 | Perl_sv_catpvf(aTHX_ sv, "%s]", PL_colors[1]); |
4335 | } | |
9b155405 | 4336 | else if (k == BRANCHJ && (OP(o) == UNLESSM || OP(o) == IFMATCH)) |
cea2e8a9 | 4337 | Perl_sv_catpvf(aTHX_ sv, "[-%d]", o->flags); |
17c3b450 | 4338 | #endif /* DEBUGGING */ |
35ff7856 | 4339 | } |
a687059c | 4340 | |
cad2e5aa JH |
4341 | SV * |
4342 | Perl_re_intuit_string(pTHX_ regexp *prog) | |
4343 | { /* Assume that RE_INTUIT is set */ | |
4344 | DEBUG_r( | |
4345 | { STRLEN n_a; | |
4346 | char *s = SvPV(prog->check_substr,n_a); | |
4347 | ||
4348 | if (!PL_colorset) reginitcolors(); | |
4349 | PerlIO_printf(Perl_debug_log, | |
4350 | "%sUsing REx substr:%s `%s%.60s%s%s'\n", | |
4351 | PL_colors[4],PL_colors[5],PL_colors[0], | |
4352 | s, | |
4353 | PL_colors[1], | |
4354 | (strlen(s) > 60 ? "..." : "")); | |
4355 | } ); | |
4356 | ||
4357 | return prog->check_substr; | |
4358 | } | |
4359 | ||
2b69d0c2 | 4360 | void |
864dbfa3 | 4361 | Perl_pregfree(pTHX_ struct regexp *r) |
a687059c | 4362 | { |
adac82c7 | 4363 | DEBUG_r(if (!PL_colorset) reginitcolors()); |
7821416a IZ |
4364 | |
4365 | if (!r || (--r->refcnt > 0)) | |
4366 | return; | |
cad2e5aa JH |
4367 | DEBUG_r(PerlIO_printf(Perl_debug_log, |
4368 | "%sFreeing REx:%s `%s%.60s%s%s'\n", | |
4369 | PL_colors[4],PL_colors[5],PL_colors[0], | |
4370 | r->precomp, | |
4371 | PL_colors[1], | |
4372 | (strlen(r->precomp) > 60 ? "..." : ""))); | |
4373 | ||
c277df42 | 4374 | if (r->precomp) |
a0d0e21e | 4375 | Safefree(r->precomp); |
cf93c79d IZ |
4376 | if (RX_MATCH_COPIED(r)) |
4377 | Safefree(r->subbeg); | |
a193d654 GS |
4378 | if (r->substrs) { |
4379 | if (r->anchored_substr) | |
4380 | SvREFCNT_dec(r->anchored_substr); | |
4381 | if (r->float_substr) | |
4382 | SvREFCNT_dec(r->float_substr); | |
2779dcf1 | 4383 | Safefree(r->substrs); |
a193d654 | 4384 | } |
c277df42 IZ |
4385 | if (r->data) { |
4386 | int n = r->data->count; | |
dfad63ad HS |
4387 | AV* new_comppad = NULL; |
4388 | AV* old_comppad; | |
4389 | SV** old_curpad; | |
4390 | ||
c277df42 IZ |
4391 | while (--n >= 0) { |
4392 | switch (r->data->what[n]) { | |
4393 | case 's': | |
4394 | SvREFCNT_dec((SV*)r->data->data[n]); | |
4395 | break; | |
653099ff GS |
4396 | case 'f': |
4397 | Safefree(r->data->data[n]); | |
4398 | break; | |
dfad63ad HS |
4399 | case 'p': |
4400 | new_comppad = (AV*)r->data->data[n]; | |
4401 | break; | |
c277df42 | 4402 | case 'o': |
dfad63ad | 4403 | if (new_comppad == NULL) |
cea2e8a9 | 4404 | Perl_croak(aTHX_ "panic: pregfree comppad"); |
dfad63ad HS |
4405 | old_comppad = PL_comppad; |
4406 | old_curpad = PL_curpad; | |
1e6dc0b6 SB |
4407 | /* Watch out for global destruction's random ordering. */ |
4408 | if (SvTYPE(new_comppad) == SVt_PVAV) { | |
4409 | PL_comppad = new_comppad; | |
4410 | PL_curpad = AvARRAY(new_comppad); | |
4411 | } | |
4412 | else | |
4413 | PL_curpad = NULL; | |
c277df42 | 4414 | op_free((OP_4tree*)r->data->data[n]); |
dfad63ad HS |
4415 | PL_comppad = old_comppad; |
4416 | PL_curpad = old_curpad; | |
4417 | SvREFCNT_dec((SV*)new_comppad); | |
4418 | new_comppad = NULL; | |
c277df42 IZ |
4419 | break; |
4420 | case 'n': | |
4421 | break; | |
4422 | default: | |
830247a4 | 4423 | Perl_croak(aTHX_ "panic: regfree data code '%c'", r->data->what[n]); |
c277df42 IZ |
4424 | } |
4425 | } | |
4426 | Safefree(r->data->what); | |
4427 | Safefree(r->data); | |
a0d0e21e LW |
4428 | } |
4429 | Safefree(r->startp); | |
4430 | Safefree(r->endp); | |
4431 | Safefree(r); | |
a687059c | 4432 | } |
c277df42 IZ |
4433 | |
4434 | /* | |
4435 | - regnext - dig the "next" pointer out of a node | |
4436 | * | |
4437 | * [Note, when REGALIGN is defined there are two places in regmatch() | |
4438 | * that bypass this code for speed.] | |
4439 | */ | |
4440 | regnode * | |
864dbfa3 | 4441 | Perl_regnext(pTHX_ register regnode *p) |
c277df42 IZ |
4442 | { |
4443 | register I32 offset; | |
4444 | ||
3280af22 | 4445 | if (p == &PL_regdummy) |
c277df42 IZ |
4446 | return(NULL); |
4447 | ||
4448 | offset = (reg_off_by_arg[OP(p)] ? ARG(p) : NEXT_OFF(p)); | |
4449 | if (offset == 0) | |
4450 | return(NULL); | |
4451 | ||
c277df42 | 4452 | return(p+offset); |
c277df42 IZ |
4453 | } |
4454 | ||
01f988be | 4455 | STATIC void |
cea2e8a9 | 4456 | S_re_croak2(pTHX_ const char* pat1,const char* pat2,...) |
c277df42 IZ |
4457 | { |
4458 | va_list args; | |
4459 | STRLEN l1 = strlen(pat1); | |
4460 | STRLEN l2 = strlen(pat2); | |
4461 | char buf[512]; | |
06bf62c7 | 4462 | SV *msv; |
c277df42 IZ |
4463 | char *message; |
4464 | ||
4465 | if (l1 > 510) | |
4466 | l1 = 510; | |
4467 | if (l1 + l2 > 510) | |
4468 | l2 = 510 - l1; | |
4469 | Copy(pat1, buf, l1 , char); | |
4470 | Copy(pat2, buf + l1, l2 , char); | |
3b818b81 GS |
4471 | buf[l1 + l2] = '\n'; |
4472 | buf[l1 + l2 + 1] = '\0'; | |
8736538c AS |
4473 | #ifdef I_STDARG |
4474 | /* ANSI variant takes additional second argument */ | |
c277df42 | 4475 | va_start(args, pat2); |
8736538c AS |
4476 | #else |
4477 | va_start(args); | |
4478 | #endif | |
5a844595 | 4479 | msv = vmess(buf, &args); |
c277df42 | 4480 | va_end(args); |
06bf62c7 | 4481 | message = SvPV(msv,l1); |
c277df42 IZ |
4482 | if (l1 > 512) |
4483 | l1 = 512; | |
4484 | Copy(message, buf, l1 , char); | |
4485 | buf[l1] = '\0'; /* Overwrite \n */ | |
cea2e8a9 | 4486 | Perl_croak(aTHX_ "%s", buf); |
c277df42 | 4487 | } |
a0ed51b3 LW |
4488 | |
4489 | /* XXX Here's a total kludge. But we need to re-enter for swash routines. */ | |
4490 | ||
4491 | void | |
864dbfa3 | 4492 | Perl_save_re_context(pTHX) |
b81d288d | 4493 | { |
830247a4 IZ |
4494 | #if 0 |
4495 | SAVEPPTR(RExC_precomp); /* uncompiled string. */ | |
4496 | SAVEI32(RExC_npar); /* () count. */ | |
4497 | SAVEI32(RExC_size); /* Code size. */ | |
4498 | SAVEI16(RExC_flags16); /* are we folding, multilining? */ | |
4499 | SAVEVPTR(RExC_rx); /* from regcomp.c */ | |
4500 | SAVEI32(RExC_seen); /* from regcomp.c */ | |
4501 | SAVEI32(RExC_sawback); /* Did we see \1, ...? */ | |
4502 | SAVEI32(RExC_naughty); /* How bad is this pattern? */ | |
4503 | SAVEVPTR(RExC_emit); /* Code-emit pointer; ®dummy = don't */ | |
4504 | SAVEPPTR(RExC_end); /* End of input for compile */ | |
4505 | SAVEPPTR(RExC_parse); /* Input-scan pointer. */ | |
4506 | #endif | |
4507 | ||
4508 | SAVEI32(PL_reg_flags); /* from regexec.c */ | |
a0ed51b3 | 4509 | SAVEPPTR(PL_bostr); |
a0ed51b3 LW |
4510 | SAVEPPTR(PL_reginput); /* String-input pointer. */ |
4511 | SAVEPPTR(PL_regbol); /* Beginning of input, for ^ check. */ | |
4512 | SAVEPPTR(PL_regeol); /* End of input, for $ check. */ | |
7766f137 GS |
4513 | SAVEVPTR(PL_regstartp); /* Pointer to startp array. */ |
4514 | SAVEVPTR(PL_regendp); /* Ditto for endp. */ | |
4515 | SAVEVPTR(PL_reglastparen); /* Similarly for lastparen. */ | |
a0ed51b3 | 4516 | SAVEPPTR(PL_regtill); /* How far we are required to go. */ |
e8347627 | 4517 | SAVEI8(PL_regprev); /* char before regbol, \n if none */ |
b81d288d | 4518 | SAVEGENERICPV(PL_reg_start_tmp); /* from regexec.c */ |
a0ed51b3 | 4519 | PL_reg_start_tmp = 0; |
a0ed51b3 LW |
4520 | SAVEI32(PL_reg_start_tmpl); /* from regexec.c */ |
4521 | PL_reg_start_tmpl = 0; | |
7766f137 | 4522 | SAVEVPTR(PL_regdata); |
a0ed51b3 LW |
4523 | SAVEI32(PL_reg_eval_set); /* from regexec.c */ |
4524 | SAVEI32(PL_regnarrate); /* from regexec.c */ | |
7766f137 | 4525 | SAVEVPTR(PL_regprogram); /* from regexec.c */ |
a0ed51b3 | 4526 | SAVEINT(PL_regindent); /* from regexec.c */ |
7766f137 GS |
4527 | SAVEVPTR(PL_regcc); /* from regexec.c */ |
4528 | SAVEVPTR(PL_curcop); | |
7766f137 GS |
4529 | SAVEVPTR(PL_reg_call_cc); /* from regexec.c */ |
4530 | SAVEVPTR(PL_reg_re); /* from regexec.c */ | |
54b6e2fa IZ |
4531 | SAVEPPTR(PL_reg_ganch); /* from regexec.c */ |
4532 | SAVESPTR(PL_reg_sv); /* from regexec.c */ | |
7766f137 | 4533 | SAVEVPTR(PL_reg_magic); /* from regexec.c */ |
54b6e2fa | 4534 | SAVEI32(PL_reg_oldpos); /* from regexec.c */ |
7766f137 GS |
4535 | SAVEVPTR(PL_reg_oldcurpm); /* from regexec.c */ |
4536 | SAVEVPTR(PL_reg_curpm); /* from regexec.c */ | |
5fb7366e | 4537 | SAVEI32(PL_regnpar); /* () count. */ |
54b6e2fa | 4538 | #ifdef DEBUGGING |
b81d288d | 4539 | SAVEPPTR(PL_reg_starttry); /* from regexec.c */ |
54b6e2fa | 4540 | #endif |
a0ed51b3 | 4541 | } |
51371543 GS |
4542 | |
4543 | #ifdef PERL_OBJECT | |
51371543 GS |
4544 | #include "XSUB.h" |
4545 | #undef this | |
4546 | #define this pPerl | |
4547 | #endif | |
4548 | ||
4549 | static void | |
4550 | clear_re(pTHXo_ void *r) | |
4551 | { | |
4552 | ReREFCNT_dec((regexp *)r); | |
4553 | } |