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 | **** | |
4bb101f2 JH |
72 | **** Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
73 | **** 2000, 2001, 2002, 2003, by Larry Wall and others | |
a687059c | 74 | **** |
9ef589d8 LW |
75 | **** You may distribute under the terms of either the GNU General Public |
76 | **** License or the Artistic License, as specified in the README file. | |
77 | ||
a687059c LW |
78 | * |
79 | * Beware that some of this code is subtly aware of the way operator | |
80 | * precedence is structured in regular expressions. Serious changes in | |
81 | * regular-expression syntax might require a total rethink. | |
82 | */ | |
83 | #include "EXTERN.h" | |
864dbfa3 | 84 | #define PERL_IN_REGCOMP_C |
a687059c | 85 | #include "perl.h" |
d06ea78c | 86 | |
acfe0abc | 87 | #ifndef PERL_IN_XSUB_RE |
d06ea78c GS |
88 | # include "INTERN.h" |
89 | #endif | |
c277df42 IZ |
90 | |
91 | #define REG_COMP_C | |
a687059c LW |
92 | #include "regcomp.h" |
93 | ||
d4cce5f1 | 94 | #ifdef op |
11343788 | 95 | #undef op |
d4cce5f1 | 96 | #endif /* op */ |
11343788 | 97 | |
fe14fcc3 | 98 | #ifdef MSDOS |
7e4e8c89 | 99 | # if defined(BUGGY_MSC6) |
fe14fcc3 | 100 | /* MSC 6.00A breaks on op/regexp.t test 85 unless we turn this off */ |
7e4e8c89 | 101 | # pragma optimize("a",off) |
fe14fcc3 | 102 | /* But MSC 6.00A is happy with 'w', for aliases only across function calls*/ |
7e4e8c89 NC |
103 | # pragma optimize("w",on ) |
104 | # endif /* BUGGY_MSC6 */ | |
fe14fcc3 LW |
105 | #endif /* MSDOS */ |
106 | ||
a687059c LW |
107 | #ifndef STATIC |
108 | #define STATIC static | |
109 | #endif | |
110 | ||
830247a4 | 111 | typedef struct RExC_state_t { |
e2509266 | 112 | U32 flags; /* are we folding, multilining? */ |
830247a4 IZ |
113 | char *precomp; /* uncompiled string. */ |
114 | regexp *rx; | |
fac92740 | 115 | char *start; /* Start of input for compile */ |
830247a4 IZ |
116 | char *end; /* End of input for compile */ |
117 | char *parse; /* Input-scan pointer. */ | |
118 | I32 whilem_seen; /* number of WHILEM in this expr */ | |
fac92740 | 119 | regnode *emit_start; /* Start of emitted-code area */ |
ffc61ed2 | 120 | regnode *emit; /* Code-emit pointer; ®dummy = don't = compiling */ |
830247a4 IZ |
121 | I32 naughty; /* How bad is this pattern? */ |
122 | I32 sawback; /* Did we see \1, ...? */ | |
123 | U32 seen; | |
124 | I32 size; /* Code size. */ | |
125 | I32 npar; /* () count. */ | |
126 | I32 extralen; | |
127 | I32 seen_zerolen; | |
128 | I32 seen_evals; | |
1aa99e6b | 129 | I32 utf8; |
830247a4 IZ |
130 | #if ADD_TO_REGEXEC |
131 | char *starttry; /* -Dr: where regtry was called. */ | |
132 | #define RExC_starttry (pRExC_state->starttry) | |
133 | #endif | |
134 | } RExC_state_t; | |
135 | ||
e2509266 | 136 | #define RExC_flags (pRExC_state->flags) |
830247a4 IZ |
137 | #define RExC_precomp (pRExC_state->precomp) |
138 | #define RExC_rx (pRExC_state->rx) | |
fac92740 | 139 | #define RExC_start (pRExC_state->start) |
830247a4 IZ |
140 | #define RExC_end (pRExC_state->end) |
141 | #define RExC_parse (pRExC_state->parse) | |
142 | #define RExC_whilem_seen (pRExC_state->whilem_seen) | |
fac92740 | 143 | #define RExC_offsets (pRExC_state->rx->offsets) /* I am not like the others */ |
830247a4 | 144 | #define RExC_emit (pRExC_state->emit) |
fac92740 | 145 | #define RExC_emit_start (pRExC_state->emit_start) |
830247a4 IZ |
146 | #define RExC_naughty (pRExC_state->naughty) |
147 | #define RExC_sawback (pRExC_state->sawback) | |
148 | #define RExC_seen (pRExC_state->seen) | |
149 | #define RExC_size (pRExC_state->size) | |
150 | #define RExC_npar (pRExC_state->npar) | |
151 | #define RExC_extralen (pRExC_state->extralen) | |
152 | #define RExC_seen_zerolen (pRExC_state->seen_zerolen) | |
153 | #define RExC_seen_evals (pRExC_state->seen_evals) | |
1aa99e6b | 154 | #define RExC_utf8 (pRExC_state->utf8) |
830247a4 | 155 | |
a687059c LW |
156 | #define ISMULT1(c) ((c) == '*' || (c) == '+' || (c) == '?') |
157 | #define ISMULT2(s) ((*s) == '*' || (*s) == '+' || (*s) == '?' || \ | |
158 | ((*s) == '{' && regcurly(s))) | |
a687059c | 159 | |
35c8bce7 LW |
160 | #ifdef SPSTART |
161 | #undef SPSTART /* dratted cpp namespace... */ | |
162 | #endif | |
a687059c LW |
163 | /* |
164 | * Flags to be passed up and down. | |
165 | */ | |
a687059c | 166 | #define WORST 0 /* Worst case. */ |
821b33a5 | 167 | #define HASWIDTH 0x1 /* Known to match non-null strings. */ |
a0d0e21e LW |
168 | #define SIMPLE 0x2 /* Simple enough to be STAR/PLUS operand. */ |
169 | #define SPSTART 0x4 /* Starts with * or +. */ | |
170 | #define TRYAGAIN 0x8 /* Weeded out a declaration. */ | |
a687059c | 171 | |
2c2d71f5 JH |
172 | /* Length of a variant. */ |
173 | ||
174 | typedef struct scan_data_t { | |
175 | I32 len_min; | |
176 | I32 len_delta; | |
177 | I32 pos_min; | |
178 | I32 pos_delta; | |
179 | SV *last_found; | |
180 | I32 last_end; /* min value, <0 unless valid. */ | |
181 | I32 last_start_min; | |
182 | I32 last_start_max; | |
183 | SV **longest; /* Either &l_fixed, or &l_float. */ | |
184 | SV *longest_fixed; | |
185 | I32 offset_fixed; | |
186 | SV *longest_float; | |
187 | I32 offset_float_min; | |
188 | I32 offset_float_max; | |
189 | I32 flags; | |
190 | I32 whilem_c; | |
cb434fcc | 191 | I32 *last_closep; |
653099ff | 192 | struct regnode_charclass_class *start_class; |
2c2d71f5 JH |
193 | } scan_data_t; |
194 | ||
a687059c | 195 | /* |
e50aee73 | 196 | * Forward declarations for pregcomp()'s friends. |
a687059c | 197 | */ |
a0d0e21e | 198 | |
b81d288d | 199 | static scan_data_t zero_scan_data = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
cb434fcc | 200 | 0, 0, 0, 0, 0, 0}; |
c277df42 IZ |
201 | |
202 | #define SF_BEFORE_EOL (SF_BEFORE_SEOL|SF_BEFORE_MEOL) | |
203 | #define SF_BEFORE_SEOL 0x1 | |
204 | #define SF_BEFORE_MEOL 0x2 | |
205 | #define SF_FIX_BEFORE_EOL (SF_FIX_BEFORE_SEOL|SF_FIX_BEFORE_MEOL) | |
206 | #define SF_FL_BEFORE_EOL (SF_FL_BEFORE_SEOL|SF_FL_BEFORE_MEOL) | |
207 | ||
09b7f37c CB |
208 | #ifdef NO_UNARY_PLUS |
209 | # define SF_FIX_SHIFT_EOL (0+2) | |
210 | # define SF_FL_SHIFT_EOL (0+4) | |
211 | #else | |
212 | # define SF_FIX_SHIFT_EOL (+2) | |
213 | # define SF_FL_SHIFT_EOL (+4) | |
214 | #endif | |
c277df42 IZ |
215 | |
216 | #define SF_FIX_BEFORE_SEOL (SF_BEFORE_SEOL << SF_FIX_SHIFT_EOL) | |
217 | #define SF_FIX_BEFORE_MEOL (SF_BEFORE_MEOL << SF_FIX_SHIFT_EOL) | |
218 | ||
219 | #define SF_FL_BEFORE_SEOL (SF_BEFORE_SEOL << SF_FL_SHIFT_EOL) | |
220 | #define SF_FL_BEFORE_MEOL (SF_BEFORE_MEOL << SF_FL_SHIFT_EOL) /* 0x20 */ | |
221 | #define SF_IS_INF 0x40 | |
222 | #define SF_HAS_PAR 0x80 | |
223 | #define SF_IN_PAR 0x100 | |
224 | #define SF_HAS_EVAL 0x200 | |
4bfe0158 | 225 | #define SCF_DO_SUBSTR 0x400 |
653099ff GS |
226 | #define SCF_DO_STCLASS_AND 0x0800 |
227 | #define SCF_DO_STCLASS_OR 0x1000 | |
228 | #define SCF_DO_STCLASS (SCF_DO_STCLASS_AND|SCF_DO_STCLASS_OR) | |
e1901655 | 229 | #define SCF_WHILEM_VISITED_POS 0x2000 |
c277df42 | 230 | |
eb160463 | 231 | #define UTF (RExC_utf8 != 0) |
e2509266 JH |
232 | #define LOC ((RExC_flags & PMf_LOCALE) != 0) |
233 | #define FOLD ((RExC_flags & PMf_FOLD) != 0) | |
a0ed51b3 | 234 | |
ffc61ed2 | 235 | #define OOB_UNICODE 12345678 |
93733859 | 236 | #define OOB_NAMEDCLASS -1 |
b8c5462f | 237 | |
a0ed51b3 LW |
238 | #define CHR_SVLEN(sv) (UTF ? sv_len_utf8(sv) : SvCUR(sv)) |
239 | #define CHR_DIST(a,b) (UTF ? utf8_distance(a,b) : a - b) | |
240 | ||
8615cb43 | 241 | |
b45f050a JF |
242 | /* length of regex to show in messages that don't mark a position within */ |
243 | #define RegexLengthToShowInErrorMessages 127 | |
244 | ||
245 | /* | |
246 | * If MARKER[12] are adjusted, be sure to adjust the constants at the top | |
247 | * of t/op/regmesg.t, the tests in t/op/re_tests, and those in | |
248 | * op/pragma/warn/regcomp. | |
249 | */ | |
7253e4e3 RK |
250 | #define MARKER1 "<-- HERE" /* marker as it appears in the description */ |
251 | #define MARKER2 " <-- HERE " /* marker as it appears within the regex */ | |
b81d288d | 252 | |
7253e4e3 | 253 | #define REPORT_LOCATION " in regex; marked by " MARKER1 " in m/%.*s" MARKER2 "%s/" |
b45f050a JF |
254 | |
255 | /* | |
256 | * Calls SAVEDESTRUCTOR_X if needed, then calls Perl_croak with the given | |
257 | * arg. Show regex, up to a maximum length. If it's too long, chop and add | |
258 | * "...". | |
259 | */ | |
ccb2c380 MP |
260 | #define FAIL(msg) STMT_START { \ |
261 | char *ellipses = ""; \ | |
262 | IV len = RExC_end - RExC_precomp; \ | |
263 | \ | |
264 | if (!SIZE_ONLY) \ | |
265 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ | |
266 | if (len > RegexLengthToShowInErrorMessages) { \ | |
267 | /* chop 10 shorter than the max, to ensure meaning of "..." */ \ | |
268 | len = RegexLengthToShowInErrorMessages - 10; \ | |
269 | ellipses = "..."; \ | |
270 | } \ | |
271 | Perl_croak(aTHX_ "%s in regex m/%.*s%s/", \ | |
272 | msg, (int)len, RExC_precomp, ellipses); \ | |
273 | } STMT_END | |
8615cb43 | 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 | */ | |
ccb2c380 MP |
280 | #define FAIL2(pat,msg) STMT_START { \ |
281 | char *ellipses = ""; \ | |
282 | IV len = RExC_end - RExC_precomp; \ | |
283 | \ | |
284 | if (!SIZE_ONLY) \ | |
285 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ | |
286 | if (len > RegexLengthToShowInErrorMessages) { \ | |
287 | /* chop 10 shorter than the max, to ensure meaning of "..." */ \ | |
288 | len = RegexLengthToShowInErrorMessages - 10; \ | |
289 | ellipses = "..."; \ | |
290 | } \ | |
291 | S_re_croak2(aTHX_ pat, " in regex m/%.*s%s/", \ | |
292 | msg, (int)len, RExC_precomp, ellipses); \ | |
293 | } STMT_END | |
b45f050a JF |
294 | |
295 | ||
296 | /* | |
297 | * Simple_vFAIL -- like FAIL, but marks the current location in the scan | |
298 | */ | |
ccb2c380 MP |
299 | #define Simple_vFAIL(m) STMT_START { \ |
300 | IV offset = RExC_parse - RExC_precomp; \ | |
301 | Perl_croak(aTHX_ "%s" REPORT_LOCATION, \ | |
302 | m, (int)offset, RExC_precomp, RExC_precomp + offset); \ | |
303 | } STMT_END | |
b45f050a JF |
304 | |
305 | /* | |
306 | * Calls SAVEDESTRUCTOR_X if needed, then Simple_vFAIL() | |
307 | */ | |
ccb2c380 MP |
308 | #define vFAIL(m) STMT_START { \ |
309 | if (!SIZE_ONLY) \ | |
310 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ | |
311 | Simple_vFAIL(m); \ | |
312 | } STMT_END | |
b45f050a JF |
313 | |
314 | /* | |
315 | * Like Simple_vFAIL(), but accepts two arguments. | |
316 | */ | |
ccb2c380 MP |
317 | #define Simple_vFAIL2(m,a1) STMT_START { \ |
318 | IV offset = RExC_parse - RExC_precomp; \ | |
319 | S_re_croak2(aTHX_ m, REPORT_LOCATION, a1, \ | |
320 | (int)offset, RExC_precomp, RExC_precomp + offset); \ | |
321 | } STMT_END | |
b45f050a JF |
322 | |
323 | /* | |
324 | * Calls SAVEDESTRUCTOR_X if needed, then Simple_vFAIL2(). | |
325 | */ | |
ccb2c380 MP |
326 | #define vFAIL2(m,a1) STMT_START { \ |
327 | if (!SIZE_ONLY) \ | |
328 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ | |
329 | Simple_vFAIL2(m, a1); \ | |
330 | } STMT_END | |
b45f050a JF |
331 | |
332 | ||
333 | /* | |
334 | * Like Simple_vFAIL(), but accepts three arguments. | |
335 | */ | |
ccb2c380 MP |
336 | #define Simple_vFAIL3(m, a1, a2) STMT_START { \ |
337 | IV offset = RExC_parse - RExC_precomp; \ | |
338 | S_re_croak2(aTHX_ m, REPORT_LOCATION, a1, a2, \ | |
339 | (int)offset, RExC_precomp, RExC_precomp + offset); \ | |
340 | } STMT_END | |
b45f050a JF |
341 | |
342 | /* | |
343 | * Calls SAVEDESTRUCTOR_X if needed, then Simple_vFAIL3(). | |
344 | */ | |
ccb2c380 MP |
345 | #define vFAIL3(m,a1,a2) STMT_START { \ |
346 | if (!SIZE_ONLY) \ | |
347 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ | |
348 | Simple_vFAIL3(m, a1, a2); \ | |
349 | } STMT_END | |
b45f050a JF |
350 | |
351 | /* | |
352 | * Like Simple_vFAIL(), but accepts four arguments. | |
353 | */ | |
ccb2c380 MP |
354 | #define Simple_vFAIL4(m, a1, a2, a3) STMT_START { \ |
355 | IV offset = RExC_parse - RExC_precomp; \ | |
356 | S_re_croak2(aTHX_ m, REPORT_LOCATION, a1, a2, a3, \ | |
357 | (int)offset, RExC_precomp, RExC_precomp + offset); \ | |
358 | } STMT_END | |
b45f050a JF |
359 | |
360 | /* | |
361 | * Like Simple_vFAIL(), but accepts five arguments. | |
362 | */ | |
ccb2c380 MP |
363 | #define Simple_vFAIL5(m, a1, a2, a3, a4) STMT_START { \ |
364 | IV offset = RExC_parse - RExC_precomp; \ | |
365 | S_re_croak2(aTHX_ m, REPORT_LOCATION, a1, a2, a3, a4, \ | |
366 | (int)offset, RExC_precomp, RExC_precomp + offset); \ | |
367 | } STMT_END | |
368 | ||
369 | ||
370 | #define vWARN(loc,m) STMT_START { \ | |
371 | IV offset = loc - RExC_precomp; \ | |
372 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), "%s" REPORT_LOCATION, \ | |
373 | m, (int)offset, RExC_precomp, RExC_precomp + offset); \ | |
374 | } STMT_END | |
375 | ||
376 | #define vWARNdep(loc,m) STMT_START { \ | |
377 | IV offset = loc - RExC_precomp; \ | |
378 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_REGEXP), \ | |
379 | "%s" REPORT_LOCATION, \ | |
380 | m, (int)offset, RExC_precomp, RExC_precomp + offset); \ | |
381 | } STMT_END | |
382 | ||
383 | ||
384 | #define vWARN2(loc, m, a1) STMT_START { \ | |
385 | IV offset = loc - RExC_precomp; \ | |
386 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), m REPORT_LOCATION, \ | |
387 | a1, (int)offset, RExC_precomp, RExC_precomp + offset); \ | |
388 | } STMT_END | |
389 | ||
390 | #define vWARN3(loc, m, a1, a2) STMT_START { \ | |
391 | IV offset = loc - RExC_precomp; \ | |
392 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), m REPORT_LOCATION, \ | |
393 | a1, a2, (int)offset, RExC_precomp, RExC_precomp + offset); \ | |
394 | } STMT_END | |
395 | ||
396 | #define vWARN4(loc, m, a1, a2, a3) STMT_START { \ | |
397 | IV offset = loc - RExC_precomp; \ | |
398 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), m REPORT_LOCATION, \ | |
399 | a1, a2, a3, (int)offset, RExC_precomp, RExC_precomp + offset); \ | |
400 | } STMT_END | |
401 | ||
402 | #define vWARN5(loc, m, a1, a2, a3, a4) STMT_START { \ | |
403 | IV offset = loc - RExC_precomp; \ | |
404 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), m REPORT_LOCATION, \ | |
405 | a1, a2, a3, a4, (int)offset, RExC_precomp, RExC_precomp + offset); \ | |
406 | } STMT_END | |
9d1d55b5 | 407 | |
8615cb43 | 408 | |
cd439c50 | 409 | /* Allow for side effects in s */ |
ccb2c380 MP |
410 | #define REGC(c,s) STMT_START { \ |
411 | if (!SIZE_ONLY) *(s) = (c); else (void)(s); \ | |
412 | } STMT_END | |
cd439c50 | 413 | |
fac92740 MJD |
414 | /* Macros for recording node offsets. 20001227 mjd@plover.com |
415 | * Nodes are numbered 1, 2, 3, 4. Node #n's position is recorded in | |
416 | * element 2*n-1 of the array. Element #2n holds the byte length node #n. | |
417 | * Element 0 holds the number n. | |
418 | */ | |
419 | ||
420 | #define MJD_OFFSET_DEBUG(x) | |
ccb2c380 MP |
421 | /* #define MJD_OFFSET_DEBUG(x) Perl_warn_nocontext x */ |
422 | ||
423 | ||
424 | #define Set_Node_Offset_To_R(node,byte) STMT_START { \ | |
425 | if (! SIZE_ONLY) { \ | |
426 | MJD_OFFSET_DEBUG(("** (%d) offset of node %d is %d.\n", \ | |
427 | __LINE__, (node), (byte))); \ | |
428 | if((node) < 0) { \ | |
429 | Perl_croak(aTHX_ "value of node is %d in Offset macro", node); \ | |
430 | } else { \ | |
431 | RExC_offsets[2*(node)-1] = (byte); \ | |
432 | } \ | |
433 | } \ | |
434 | } STMT_END | |
435 | ||
436 | #define Set_Node_Offset(node,byte) \ | |
437 | Set_Node_Offset_To_R((node)-RExC_emit_start, (byte)-RExC_start) | |
438 | #define Set_Cur_Node_Offset Set_Node_Offset(RExC_emit, RExC_parse) | |
439 | ||
440 | #define Set_Node_Length_To_R(node,len) STMT_START { \ | |
441 | if (! SIZE_ONLY) { \ | |
442 | MJD_OFFSET_DEBUG(("** (%d) size of node %d is %d.\n", \ | |
443 | __LINE__, (node), (len))); \ | |
444 | if((node) < 0) { \ | |
445 | Perl_croak(aTHX_ "value of node is %d in Length macro", node); \ | |
446 | } else { \ | |
447 | RExC_offsets[2*(node)] = (len); \ | |
448 | } \ | |
449 | } \ | |
450 | } STMT_END | |
451 | ||
452 | #define Set_Node_Length(node,len) \ | |
453 | Set_Node_Length_To_R((node)-RExC_emit_start, len) | |
454 | #define Set_Cur_Node_Length(len) Set_Node_Length(RExC_emit, len) | |
455 | #define Set_Node_Cur_Length(node) \ | |
456 | Set_Node_Length(node, RExC_parse - parse_start) | |
fac92740 MJD |
457 | |
458 | /* Get offsets and lengths */ | |
459 | #define Node_Offset(n) (RExC_offsets[2*((n)-RExC_emit_start)-1]) | |
460 | #define Node_Length(n) (RExC_offsets[2*((n)-RExC_emit_start)]) | |
461 | ||
acfe0abc | 462 | static void clear_re(pTHX_ void *r); |
4327152a | 463 | |
653099ff GS |
464 | /* Mark that we cannot extend a found fixed substring at this point. |
465 | Updata the longest found anchored substring and the longest found | |
466 | floating substrings if needed. */ | |
467 | ||
4327152a | 468 | STATIC void |
830247a4 | 469 | S_scan_commit(pTHX_ RExC_state_t *pRExC_state, scan_data_t *data) |
c277df42 | 470 | { |
a0ed51b3 LW |
471 | STRLEN l = CHR_SVLEN(data->last_found); |
472 | STRLEN old_l = CHR_SVLEN(*data->longest); | |
b81d288d | 473 | |
c277df42 | 474 | if ((l >= old_l) && ((l > old_l) || (data->flags & SF_BEFORE_EOL))) { |
6b43b216 | 475 | SvSetMagicSV(*data->longest, data->last_found); |
c277df42 IZ |
476 | if (*data->longest == data->longest_fixed) { |
477 | data->offset_fixed = l ? data->last_start_min : data->pos_min; | |
478 | if (data->flags & SF_BEFORE_EOL) | |
b81d288d | 479 | data->flags |
c277df42 IZ |
480 | |= ((data->flags & SF_BEFORE_EOL) << SF_FIX_SHIFT_EOL); |
481 | else | |
482 | data->flags &= ~SF_FIX_BEFORE_EOL; | |
a0ed51b3 LW |
483 | } |
484 | else { | |
c277df42 | 485 | data->offset_float_min = l ? data->last_start_min : data->pos_min; |
b81d288d AB |
486 | data->offset_float_max = (l |
487 | ? data->last_start_max | |
c277df42 | 488 | : data->pos_min + data->pos_delta); |
9051bda5 HS |
489 | if ((U32)data->offset_float_max > (U32)I32_MAX) |
490 | data->offset_float_max = I32_MAX; | |
c277df42 | 491 | if (data->flags & SF_BEFORE_EOL) |
b81d288d | 492 | data->flags |
c277df42 IZ |
493 | |= ((data->flags & SF_BEFORE_EOL) << SF_FL_SHIFT_EOL); |
494 | else | |
495 | data->flags &= ~SF_FL_BEFORE_EOL; | |
496 | } | |
497 | } | |
498 | SvCUR_set(data->last_found, 0); | |
0eda9292 JH |
499 | { |
500 | SV * sv = data->last_found; | |
501 | MAGIC *mg = | |
502 | SvUTF8(sv) && SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : NULL; | |
503 | if (mg && mg->mg_len > 0) | |
504 | mg->mg_len = 0; | |
505 | } | |
c277df42 IZ |
506 | data->last_end = -1; |
507 | data->flags &= ~SF_BEFORE_EOL; | |
508 | } | |
509 | ||
653099ff GS |
510 | /* Can match anything (initialization) */ |
511 | STATIC void | |
830247a4 | 512 | S_cl_anything(pTHX_ RExC_state_t *pRExC_state, struct regnode_charclass_class *cl) |
653099ff | 513 | { |
653099ff | 514 | ANYOF_CLASS_ZERO(cl); |
f8bef550 | 515 | ANYOF_BITMAP_SETALL(cl); |
1aa99e6b | 516 | cl->flags = ANYOF_EOS|ANYOF_UNICODE_ALL; |
653099ff GS |
517 | if (LOC) |
518 | cl->flags |= ANYOF_LOCALE; | |
519 | } | |
520 | ||
521 | /* Can match anything (initialization) */ | |
522 | STATIC int | |
523 | S_cl_is_anything(pTHX_ struct regnode_charclass_class *cl) | |
524 | { | |
525 | int value; | |
526 | ||
aaa51d5e | 527 | for (value = 0; value <= ANYOF_MAX; value += 2) |
653099ff GS |
528 | if (ANYOF_CLASS_TEST(cl, value) && ANYOF_CLASS_TEST(cl, value + 1)) |
529 | return 1; | |
1aa99e6b IH |
530 | if (!(cl->flags & ANYOF_UNICODE_ALL)) |
531 | return 0; | |
f8bef550 NC |
532 | if (!ANYOF_BITMAP_TESTALLSET(cl)) |
533 | return 0; | |
653099ff GS |
534 | return 1; |
535 | } | |
536 | ||
537 | /* Can match anything (initialization) */ | |
538 | STATIC void | |
830247a4 | 539 | S_cl_init(pTHX_ RExC_state_t *pRExC_state, struct regnode_charclass_class *cl) |
653099ff | 540 | { |
8ecf7187 | 541 | Zero(cl, 1, struct regnode_charclass_class); |
653099ff | 542 | cl->type = ANYOF; |
830247a4 | 543 | cl_anything(pRExC_state, cl); |
653099ff GS |
544 | } |
545 | ||
546 | STATIC void | |
830247a4 | 547 | S_cl_init_zero(pTHX_ RExC_state_t *pRExC_state, struct regnode_charclass_class *cl) |
653099ff | 548 | { |
8ecf7187 | 549 | Zero(cl, 1, struct regnode_charclass_class); |
653099ff | 550 | cl->type = ANYOF; |
830247a4 | 551 | cl_anything(pRExC_state, cl); |
653099ff GS |
552 | if (LOC) |
553 | cl->flags |= ANYOF_LOCALE; | |
554 | } | |
555 | ||
556 | /* 'And' a given class with another one. Can create false positives */ | |
557 | /* We assume that cl is not inverted */ | |
558 | STATIC void | |
559 | S_cl_and(pTHX_ struct regnode_charclass_class *cl, | |
560 | struct regnode_charclass_class *and_with) | |
561 | { | |
653099ff GS |
562 | if (!(and_with->flags & ANYOF_CLASS) |
563 | && !(cl->flags & ANYOF_CLASS) | |
564 | && (and_with->flags & ANYOF_LOCALE) == (cl->flags & ANYOF_LOCALE) | |
565 | && !(and_with->flags & ANYOF_FOLD) | |
566 | && !(cl->flags & ANYOF_FOLD)) { | |
567 | int i; | |
568 | ||
569 | if (and_with->flags & ANYOF_INVERT) | |
570 | for (i = 0; i < ANYOF_BITMAP_SIZE; i++) | |
571 | cl->bitmap[i] &= ~and_with->bitmap[i]; | |
572 | else | |
573 | for (i = 0; i < ANYOF_BITMAP_SIZE; i++) | |
574 | cl->bitmap[i] &= and_with->bitmap[i]; | |
575 | } /* XXXX: logic is complicated otherwise, leave it along for a moment. */ | |
576 | if (!(and_with->flags & ANYOF_EOS)) | |
577 | cl->flags &= ~ANYOF_EOS; | |
1aa99e6b | 578 | |
14ebb1a2 JH |
579 | if (cl->flags & ANYOF_UNICODE_ALL && and_with->flags & ANYOF_UNICODE && |
580 | !(and_with->flags & ANYOF_INVERT)) { | |
1aa99e6b IH |
581 | cl->flags &= ~ANYOF_UNICODE_ALL; |
582 | cl->flags |= ANYOF_UNICODE; | |
583 | ARG_SET(cl, ARG(and_with)); | |
584 | } | |
14ebb1a2 JH |
585 | if (!(and_with->flags & ANYOF_UNICODE_ALL) && |
586 | !(and_with->flags & ANYOF_INVERT)) | |
1aa99e6b | 587 | cl->flags &= ~ANYOF_UNICODE_ALL; |
14ebb1a2 JH |
588 | if (!(and_with->flags & (ANYOF_UNICODE|ANYOF_UNICODE_ALL)) && |
589 | !(and_with->flags & ANYOF_INVERT)) | |
1aa99e6b | 590 | cl->flags &= ~ANYOF_UNICODE; |
653099ff GS |
591 | } |
592 | ||
593 | /* 'OR' a given class with another one. Can create false positives */ | |
594 | /* We assume that cl is not inverted */ | |
595 | STATIC void | |
830247a4 | 596 | S_cl_or(pTHX_ RExC_state_t *pRExC_state, struct regnode_charclass_class *cl, struct regnode_charclass_class *or_with) |
653099ff | 597 | { |
653099ff GS |
598 | if (or_with->flags & ANYOF_INVERT) { |
599 | /* We do not use | |
600 | * (B1 | CL1) | (!B2 & !CL2) = (B1 | !B2 & !CL2) | (CL1 | (!B2 & !CL2)) | |
601 | * <= (B1 | !B2) | (CL1 | !CL2) | |
602 | * which is wasteful if CL2 is small, but we ignore CL2: | |
603 | * (B1 | CL1) | (!B2 & !CL2) <= (B1 | CL1) | !B2 = (B1 | !B2) | CL1 | |
604 | * XXXX Can we handle case-fold? Unclear: | |
605 | * (OK1(i) | OK1(i')) | !(OK1(i) | OK1(i')) = | |
606 | * (OK1(i) | OK1(i')) | (!OK1(i) & !OK1(i')) | |
607 | */ | |
608 | if ( (or_with->flags & ANYOF_LOCALE) == (cl->flags & ANYOF_LOCALE) | |
609 | && !(or_with->flags & ANYOF_FOLD) | |
610 | && !(cl->flags & ANYOF_FOLD) ) { | |
611 | int i; | |
612 | ||
613 | for (i = 0; i < ANYOF_BITMAP_SIZE; i++) | |
614 | cl->bitmap[i] |= ~or_with->bitmap[i]; | |
615 | } /* XXXX: logic is complicated otherwise */ | |
616 | else { | |
830247a4 | 617 | cl_anything(pRExC_state, cl); |
653099ff GS |
618 | } |
619 | } else { | |
620 | /* (B1 | CL1) | (B2 | CL2) = (B1 | B2) | (CL1 | CL2)) */ | |
621 | if ( (or_with->flags & ANYOF_LOCALE) == (cl->flags & ANYOF_LOCALE) | |
b81d288d | 622 | && (!(or_with->flags & ANYOF_FOLD) |
653099ff GS |
623 | || (cl->flags & ANYOF_FOLD)) ) { |
624 | int i; | |
625 | ||
626 | /* OR char bitmap and class bitmap separately */ | |
627 | for (i = 0; i < ANYOF_BITMAP_SIZE; i++) | |
628 | cl->bitmap[i] |= or_with->bitmap[i]; | |
629 | if (or_with->flags & ANYOF_CLASS) { | |
630 | for (i = 0; i < ANYOF_CLASSBITMAP_SIZE; i++) | |
631 | cl->classflags[i] |= or_with->classflags[i]; | |
632 | cl->flags |= ANYOF_CLASS; | |
633 | } | |
634 | } | |
635 | else { /* XXXX: logic is complicated, leave it along for a moment. */ | |
830247a4 | 636 | cl_anything(pRExC_state, cl); |
653099ff GS |
637 | } |
638 | } | |
639 | if (or_with->flags & ANYOF_EOS) | |
640 | cl->flags |= ANYOF_EOS; | |
1aa99e6b IH |
641 | |
642 | if (cl->flags & ANYOF_UNICODE && or_with->flags & ANYOF_UNICODE && | |
643 | ARG(cl) != ARG(or_with)) { | |
644 | cl->flags |= ANYOF_UNICODE_ALL; | |
645 | cl->flags &= ~ANYOF_UNICODE; | |
646 | } | |
647 | if (or_with->flags & ANYOF_UNICODE_ALL) { | |
648 | cl->flags |= ANYOF_UNICODE_ALL; | |
649 | cl->flags &= ~ANYOF_UNICODE; | |
650 | } | |
653099ff GS |
651 | } |
652 | ||
5d1c421c JH |
653 | /* |
654 | * There are strange code-generation bugs caused on sparc64 by gcc-2.95.2. | |
655 | * These need to be revisited when a newer toolchain becomes available. | |
656 | */ | |
657 | #if defined(__sparc64__) && defined(__GNUC__) | |
658 | # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 96) | |
659 | # undef SPARC64_GCC_WORKAROUND | |
660 | # define SPARC64_GCC_WORKAROUND 1 | |
661 | # endif | |
662 | #endif | |
663 | ||
653099ff GS |
664 | /* REx optimizer. Converts nodes into quickier variants "in place". |
665 | Finds fixed substrings. */ | |
666 | ||
c277df42 IZ |
667 | /* Stops at toplevel WHILEM as well as at `last'. At end *scanp is set |
668 | to the position after last scanned or to NULL. */ | |
669 | ||
76e3520e | 670 | STATIC I32 |
830247a4 | 671 | S_study_chunk(pTHX_ RExC_state_t *pRExC_state, regnode **scanp, I32 *deltap, regnode *last, scan_data_t *data, U32 flags) |
c277df42 IZ |
672 | /* scanp: Start here (read-write). */ |
673 | /* deltap: Write maxlen-minlen here. */ | |
674 | /* last: Stop before this one. */ | |
675 | { | |
676 | I32 min = 0, pars = 0, code; | |
677 | regnode *scan = *scanp, *next; | |
678 | I32 delta = 0; | |
679 | int is_inf = (flags & SCF_DO_SUBSTR) && (data->flags & SF_IS_INF); | |
aca2d497 | 680 | int is_inf_internal = 0; /* The studied chunk is infinite */ |
c277df42 IZ |
681 | I32 is_par = OP(scan) == OPEN ? ARG(scan) : 0; |
682 | scan_data_t data_fake; | |
653099ff | 683 | struct regnode_charclass_class and_with; /* Valid if flags & SCF_DO_STCLASS_OR */ |
b81d288d | 684 | |
c277df42 IZ |
685 | while (scan && OP(scan) != END && scan < last) { |
686 | /* Peephole optimizer: */ | |
687 | ||
22c35a8c | 688 | if (PL_regkind[(U8)OP(scan)] == EXACT) { |
653099ff | 689 | /* Merge several consecutive EXACTish nodes into one. */ |
c277df42 IZ |
690 | regnode *n = regnext(scan); |
691 | U32 stringok = 1; | |
692 | #ifdef DEBUGGING | |
693 | regnode *stop = scan; | |
b81d288d | 694 | #endif |
c277df42 | 695 | |
cd439c50 | 696 | next = scan + NODE_SZ_STR(scan); |
c277df42 IZ |
697 | /* Skip NOTHING, merge EXACT*. */ |
698 | while (n && | |
b81d288d | 699 | ( PL_regkind[(U8)OP(n)] == NOTHING || |
c277df42 IZ |
700 | (stringok && (OP(n) == OP(scan)))) |
701 | && NEXT_OFF(n) | |
702 | && NEXT_OFF(scan) + NEXT_OFF(n) < I16_MAX) { | |
703 | if (OP(n) == TAIL || n > next) | |
704 | stringok = 0; | |
22c35a8c | 705 | if (PL_regkind[(U8)OP(n)] == NOTHING) { |
c277df42 IZ |
706 | NEXT_OFF(scan) += NEXT_OFF(n); |
707 | next = n + NODE_STEP_REGNODE; | |
708 | #ifdef DEBUGGING | |
709 | if (stringok) | |
710 | stop = n; | |
b81d288d | 711 | #endif |
c277df42 | 712 | n = regnext(n); |
a0ed51b3 | 713 | } |
f49d4d0f | 714 | else if (stringok) { |
cd439c50 | 715 | int oldl = STR_LEN(scan); |
c277df42 | 716 | regnode *nnext = regnext(n); |
f49d4d0f | 717 | |
b81d288d | 718 | if (oldl + STR_LEN(n) > U8_MAX) |
c277df42 IZ |
719 | break; |
720 | NEXT_OFF(scan) += NEXT_OFF(n); | |
cd439c50 IZ |
721 | STR_LEN(scan) += STR_LEN(n); |
722 | next = n + NODE_SZ_STR(n); | |
c277df42 | 723 | /* Now we can overwrite *n : */ |
f49d4d0f | 724 | Move(STRING(n), STRING(scan) + oldl, STR_LEN(n), char); |
c277df42 | 725 | #ifdef DEBUGGING |
f49d4d0f | 726 | stop = next - 1; |
b81d288d | 727 | #endif |
c277df42 IZ |
728 | n = nnext; |
729 | } | |
730 | } | |
61a36c01 | 731 | |
d65e4eab | 732 | if (UTF && OP(scan) == EXACTF && STR_LEN(scan) >= 6) { |
61a36c01 JH |
733 | /* |
734 | Two problematic code points in Unicode casefolding of EXACT nodes: | |
735 | ||
736 | U+0390 - GREEK SMALL LETTER IOTA WITH DIALYTIKA AND TONOS | |
737 | U+03B0 - GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND TONOS | |
738 | ||
739 | which casefold to | |
740 | ||
741 | Unicode UTF-8 | |
742 | ||
743 | U+03B9 U+0308 U+0301 0xCE 0xB9 0xCC 0x88 0xCC 0x81 | |
744 | U+03C5 U+0308 U+0301 0xCF 0x85 0xCC 0x88 0xCC 0x81 | |
745 | ||
746 | This means that in case-insensitive matching (or "loose matching", | |
747 | as Unicode calls it), an EXACTF of length six (the UTF-8 encoded byte | |
748 | length of the above casefolded versions) can match a target string | |
749 | of length two (the byte length of UTF-8 encoded U+0390 or U+03B0). | |
750 | This would rather mess up the minimum length computation. | |
751 | ||
752 | What we'll do is to look for the tail four bytes, and then peek | |
753 | at the preceding two bytes to see whether we need to decrease | |
754 | the minimum length by four (six minus two). | |
755 | ||
756 | Thanks to the design of UTF-8, there cannot be false matches: | |
757 | A sequence of valid UTF-8 bytes cannot be a subsequence of | |
758 | another valid sequence of UTF-8 bytes. | |
759 | ||
760 | */ | |
761 | char *s0 = STRING(scan), *s, *t; | |
762 | char *s1 = s0 + STR_LEN(scan) - 1, *s2 = s1 - 4; | |
763 | char *t0 = "\xcc\x88\xcc\x81"; | |
764 | char *t1 = t0 + 3; | |
765 | ||
766 | for (s = s0 + 2; | |
767 | s < s2 && (t = ninstr(s, s1, t0, t1)); | |
768 | s = t + 4) { | |
769 | if (((U8)t[-1] == 0xB9 && (U8)t[-2] == 0xCE) || | |
770 | ((U8)t[-1] == 0x85 && (U8)t[-2] == 0xCF)) | |
771 | min -= 4; | |
772 | } | |
773 | } | |
774 | ||
c277df42 IZ |
775 | #ifdef DEBUGGING |
776 | /* Allow dumping */ | |
cd439c50 | 777 | n = scan + NODE_SZ_STR(scan); |
c277df42 | 778 | while (n <= stop) { |
22c35a8c | 779 | if (PL_regkind[(U8)OP(n)] != NOTHING || OP(n) == NOTHING) { |
c277df42 IZ |
780 | OP(n) = OPTIMIZED; |
781 | NEXT_OFF(n) = 0; | |
782 | } | |
783 | n++; | |
784 | } | |
653099ff | 785 | #endif |
c277df42 | 786 | } |
653099ff GS |
787 | /* Follow the next-chain of the current node and optimize |
788 | away all the NOTHINGs from it. */ | |
c277df42 | 789 | if (OP(scan) != CURLYX) { |
048cfca1 GS |
790 | int max = (reg_off_by_arg[OP(scan)] |
791 | ? I32_MAX | |
792 | /* I32 may be smaller than U16 on CRAYs! */ | |
793 | : (I32_MAX < U16_MAX ? I32_MAX : U16_MAX)); | |
c277df42 IZ |
794 | int off = (reg_off_by_arg[OP(scan)] ? ARG(scan) : NEXT_OFF(scan)); |
795 | int noff; | |
796 | regnode *n = scan; | |
b81d288d | 797 | |
c277df42 IZ |
798 | /* Skip NOTHING and LONGJMP. */ |
799 | while ((n = regnext(n)) | |
22c35a8c | 800 | && ((PL_regkind[(U8)OP(n)] == NOTHING && (noff = NEXT_OFF(n))) |
c277df42 IZ |
801 | || ((OP(n) == LONGJMP) && (noff = ARG(n)))) |
802 | && off + noff < max) | |
803 | off += noff; | |
804 | if (reg_off_by_arg[OP(scan)]) | |
805 | ARG(scan) = off; | |
b81d288d | 806 | else |
c277df42 IZ |
807 | NEXT_OFF(scan) = off; |
808 | } | |
653099ff GS |
809 | /* The principal pseudo-switch. Cannot be a switch, since we |
810 | look into several different things. */ | |
b81d288d | 811 | if (OP(scan) == BRANCH || OP(scan) == BRANCHJ |
c277df42 IZ |
812 | || OP(scan) == IFTHEN || OP(scan) == SUSPEND) { |
813 | next = regnext(scan); | |
814 | code = OP(scan); | |
b81d288d AB |
815 | |
816 | if (OP(next) == code || code == IFTHEN || code == SUSPEND) { | |
c277df42 | 817 | I32 max1 = 0, min1 = I32_MAX, num = 0; |
653099ff | 818 | struct regnode_charclass_class accum; |
c277df42 | 819 | |
653099ff | 820 | if (flags & SCF_DO_SUBSTR) /* XXXX Add !SUSPEND? */ |
830247a4 | 821 | scan_commit(pRExC_state, data); /* Cannot merge strings after this. */ |
653099ff | 822 | if (flags & SCF_DO_STCLASS) |
830247a4 | 823 | cl_init_zero(pRExC_state, &accum); |
c277df42 | 824 | while (OP(scan) == code) { |
830247a4 | 825 | I32 deltanext, minnext, f = 0, fake; |
653099ff | 826 | struct regnode_charclass_class this_class; |
c277df42 IZ |
827 | |
828 | num++; | |
829 | data_fake.flags = 0; | |
b81d288d | 830 | if (data) { |
2c2d71f5 | 831 | data_fake.whilem_c = data->whilem_c; |
cb434fcc IZ |
832 | data_fake.last_closep = data->last_closep; |
833 | } | |
834 | else | |
835 | data_fake.last_closep = &fake; | |
c277df42 IZ |
836 | next = regnext(scan); |
837 | scan = NEXTOPER(scan); | |
838 | if (code != BRANCH) | |
839 | scan = NEXTOPER(scan); | |
653099ff | 840 | if (flags & SCF_DO_STCLASS) { |
830247a4 | 841 | cl_init(pRExC_state, &this_class); |
653099ff GS |
842 | data_fake.start_class = &this_class; |
843 | f = SCF_DO_STCLASS_AND; | |
b81d288d | 844 | } |
e1901655 IZ |
845 | if (flags & SCF_WHILEM_VISITED_POS) |
846 | f |= SCF_WHILEM_VISITED_POS; | |
653099ff | 847 | /* we suppose the run is continuous, last=next...*/ |
830247a4 IZ |
848 | minnext = study_chunk(pRExC_state, &scan, &deltanext, |
849 | next, &data_fake, f); | |
b81d288d | 850 | if (min1 > minnext) |
c277df42 IZ |
851 | min1 = minnext; |
852 | if (max1 < minnext + deltanext) | |
853 | max1 = minnext + deltanext; | |
854 | if (deltanext == I32_MAX) | |
aca2d497 | 855 | is_inf = is_inf_internal = 1; |
c277df42 IZ |
856 | scan = next; |
857 | if (data_fake.flags & (SF_HAS_PAR|SF_IN_PAR)) | |
858 | pars++; | |
405ff068 | 859 | if (data && (data_fake.flags & SF_HAS_EVAL)) |
c277df42 | 860 | data->flags |= SF_HAS_EVAL; |
2c2d71f5 JH |
861 | if (data) |
862 | data->whilem_c = data_fake.whilem_c; | |
653099ff | 863 | if (flags & SCF_DO_STCLASS) |
830247a4 | 864 | cl_or(pRExC_state, &accum, &this_class); |
b81d288d | 865 | if (code == SUSPEND) |
c277df42 IZ |
866 | break; |
867 | } | |
868 | if (code == IFTHEN && num < 2) /* Empty ELSE branch */ | |
869 | min1 = 0; | |
870 | if (flags & SCF_DO_SUBSTR) { | |
871 | data->pos_min += min1; | |
872 | data->pos_delta += max1 - min1; | |
873 | if (max1 != min1 || is_inf) | |
874 | data->longest = &(data->longest_float); | |
875 | } | |
876 | min += min1; | |
877 | delta += max1 - min1; | |
653099ff | 878 | if (flags & SCF_DO_STCLASS_OR) { |
830247a4 | 879 | cl_or(pRExC_state, data->start_class, &accum); |
653099ff GS |
880 | if (min1) { |
881 | cl_and(data->start_class, &and_with); | |
882 | flags &= ~SCF_DO_STCLASS; | |
883 | } | |
884 | } | |
885 | else if (flags & SCF_DO_STCLASS_AND) { | |
de0c8cb8 GS |
886 | if (min1) { |
887 | cl_and(data->start_class, &accum); | |
653099ff | 888 | flags &= ~SCF_DO_STCLASS; |
de0c8cb8 GS |
889 | } |
890 | else { | |
b81d288d | 891 | /* Switch to OR mode: cache the old value of |
de0c8cb8 GS |
892 | * data->start_class */ |
893 | StructCopy(data->start_class, &and_with, | |
894 | struct regnode_charclass_class); | |
895 | flags &= ~SCF_DO_STCLASS_AND; | |
896 | StructCopy(&accum, data->start_class, | |
897 | struct regnode_charclass_class); | |
898 | flags |= SCF_DO_STCLASS_OR; | |
899 | data->start_class->flags |= ANYOF_EOS; | |
900 | } | |
653099ff | 901 | } |
a0ed51b3 LW |
902 | } |
903 | else if (code == BRANCHJ) /* single branch is optimized. */ | |
c277df42 IZ |
904 | scan = NEXTOPER(NEXTOPER(scan)); |
905 | else /* single branch is optimized. */ | |
906 | scan = NEXTOPER(scan); | |
907 | continue; | |
a0ed51b3 LW |
908 | } |
909 | else if (OP(scan) == EXACT) { | |
cd439c50 | 910 | I32 l = STR_LEN(scan); |
1aa99e6b | 911 | UV uc = *((U8*)STRING(scan)); |
a0ed51b3 | 912 | if (UTF) { |
1aa99e6b IH |
913 | U8 *s = (U8*)STRING(scan); |
914 | l = utf8_length(s, s + l); | |
9041c2e3 | 915 | uc = utf8_to_uvchr(s, NULL); |
a0ed51b3 LW |
916 | } |
917 | min += l; | |
c277df42 | 918 | if (flags & SCF_DO_SUBSTR) { /* Update longest substr. */ |
c277df42 IZ |
919 | /* The code below prefers earlier match for fixed |
920 | offset, later match for variable offset. */ | |
921 | if (data->last_end == -1) { /* Update the start info. */ | |
922 | data->last_start_min = data->pos_min; | |
923 | data->last_start_max = is_inf | |
b81d288d | 924 | ? I32_MAX : data->pos_min + data->pos_delta; |
c277df42 | 925 | } |
cd439c50 | 926 | sv_catpvn(data->last_found, STRING(scan), STR_LEN(scan)); |
0eda9292 JH |
927 | { |
928 | SV * sv = data->last_found; | |
929 | MAGIC *mg = SvUTF8(sv) && SvMAGICAL(sv) ? | |
930 | mg_find(sv, PERL_MAGIC_utf8) : NULL; | |
931 | if (mg && mg->mg_len >= 0) | |
5e43f467 JH |
932 | mg->mg_len += utf8_length((U8*)STRING(scan), |
933 | (U8*)STRING(scan)+STR_LEN(scan)); | |
0eda9292 | 934 | } |
33b8afdf JH |
935 | if (UTF) |
936 | SvUTF8_on(data->last_found); | |
c277df42 IZ |
937 | data->last_end = data->pos_min + l; |
938 | data->pos_min += l; /* As in the first entry. */ | |
939 | data->flags &= ~SF_BEFORE_EOL; | |
940 | } | |
653099ff GS |
941 | if (flags & SCF_DO_STCLASS_AND) { |
942 | /* Check whether it is compatible with what we know already! */ | |
943 | int compat = 1; | |
944 | ||
1aa99e6b | 945 | if (uc >= 0x100 || |
516a5887 | 946 | (!(data->start_class->flags & (ANYOF_CLASS | ANYOF_LOCALE)) |
1aa99e6b | 947 | && !ANYOF_BITMAP_TEST(data->start_class, uc) |
653099ff | 948 | && (!(data->start_class->flags & ANYOF_FOLD) |
1aa99e6b | 949 | || !ANYOF_BITMAP_TEST(data->start_class, PL_fold[uc]))) |
516a5887 | 950 | ) |
653099ff GS |
951 | compat = 0; |
952 | ANYOF_CLASS_ZERO(data->start_class); | |
953 | ANYOF_BITMAP_ZERO(data->start_class); | |
954 | if (compat) | |
1aa99e6b | 955 | ANYOF_BITMAP_SET(data->start_class, uc); |
653099ff | 956 | data->start_class->flags &= ~ANYOF_EOS; |
9b877dbb IH |
957 | if (uc < 0x100) |
958 | data->start_class->flags &= ~ANYOF_UNICODE_ALL; | |
653099ff GS |
959 | } |
960 | else if (flags & SCF_DO_STCLASS_OR) { | |
961 | /* false positive possible if the class is case-folded */ | |
1aa99e6b | 962 | if (uc < 0x100) |
9b877dbb IH |
963 | ANYOF_BITMAP_SET(data->start_class, uc); |
964 | else | |
965 | data->start_class->flags |= ANYOF_UNICODE_ALL; | |
653099ff GS |
966 | data->start_class->flags &= ~ANYOF_EOS; |
967 | cl_and(data->start_class, &and_with); | |
968 | } | |
969 | flags &= ~SCF_DO_STCLASS; | |
a0ed51b3 | 970 | } |
653099ff | 971 | else if (PL_regkind[(U8)OP(scan)] == EXACT) { /* But OP != EXACT! */ |
cd439c50 | 972 | I32 l = STR_LEN(scan); |
1aa99e6b | 973 | UV uc = *((U8*)STRING(scan)); |
653099ff GS |
974 | |
975 | /* Search for fixed substrings supports EXACT only. */ | |
b81d288d | 976 | if (flags & SCF_DO_SUBSTR) |
830247a4 | 977 | scan_commit(pRExC_state, data); |
a0ed51b3 | 978 | if (UTF) { |
1aa99e6b IH |
979 | U8 *s = (U8 *)STRING(scan); |
980 | l = utf8_length(s, s + l); | |
9041c2e3 | 981 | uc = utf8_to_uvchr(s, NULL); |
a0ed51b3 LW |
982 | } |
983 | min += l; | |
c277df42 | 984 | if (data && (flags & SCF_DO_SUBSTR)) |
a0ed51b3 | 985 | data->pos_min += l; |
653099ff GS |
986 | if (flags & SCF_DO_STCLASS_AND) { |
987 | /* Check whether it is compatible with what we know already! */ | |
988 | int compat = 1; | |
989 | ||
1aa99e6b | 990 | if (uc >= 0x100 || |
516a5887 | 991 | (!(data->start_class->flags & (ANYOF_CLASS | ANYOF_LOCALE)) |
1aa99e6b | 992 | && !ANYOF_BITMAP_TEST(data->start_class, uc) |
516a5887 | 993 | && !ANYOF_BITMAP_TEST(data->start_class, PL_fold[uc]))) |
653099ff GS |
994 | compat = 0; |
995 | ANYOF_CLASS_ZERO(data->start_class); | |
996 | ANYOF_BITMAP_ZERO(data->start_class); | |
997 | if (compat) { | |
1aa99e6b | 998 | ANYOF_BITMAP_SET(data->start_class, uc); |
653099ff GS |
999 | data->start_class->flags &= ~ANYOF_EOS; |
1000 | data->start_class->flags |= ANYOF_FOLD; | |
1001 | if (OP(scan) == EXACTFL) | |
1002 | data->start_class->flags |= ANYOF_LOCALE; | |
1003 | } | |
1004 | } | |
1005 | else if (flags & SCF_DO_STCLASS_OR) { | |
1006 | if (data->start_class->flags & ANYOF_FOLD) { | |
1007 | /* false positive possible if the class is case-folded. | |
1008 | Assume that the locale settings are the same... */ | |
1aa99e6b IH |
1009 | if (uc < 0x100) |
1010 | ANYOF_BITMAP_SET(data->start_class, uc); | |
653099ff GS |
1011 | data->start_class->flags &= ~ANYOF_EOS; |
1012 | } | |
1013 | cl_and(data->start_class, &and_with); | |
1014 | } | |
1015 | flags &= ~SCF_DO_STCLASS; | |
a0ed51b3 | 1016 | } |
4d61ec05 | 1017 | else if (strchr((char*)PL_varies,OP(scan))) { |
9c5ffd7c | 1018 | I32 mincount, maxcount, minnext, deltanext, fl = 0; |
aa7a4b56 | 1019 | I32 f = flags, pos_before = 0; |
c277df42 | 1020 | regnode *oscan = scan; |
653099ff GS |
1021 | struct regnode_charclass_class this_class; |
1022 | struct regnode_charclass_class *oclass = NULL; | |
727f22e3 | 1023 | I32 next_is_eval = 0; |
653099ff | 1024 | |
22c35a8c | 1025 | switch (PL_regkind[(U8)OP(scan)]) { |
653099ff | 1026 | case WHILEM: /* End of (?:...)* . */ |
c277df42 IZ |
1027 | scan = NEXTOPER(scan); |
1028 | goto finish; | |
1029 | case PLUS: | |
653099ff | 1030 | if (flags & (SCF_DO_SUBSTR | SCF_DO_STCLASS)) { |
c277df42 | 1031 | next = NEXTOPER(scan); |
653099ff | 1032 | if (OP(next) == EXACT || (flags & SCF_DO_STCLASS)) { |
b81d288d AB |
1033 | mincount = 1; |
1034 | maxcount = REG_INFTY; | |
c277df42 IZ |
1035 | next = regnext(scan); |
1036 | scan = NEXTOPER(scan); | |
1037 | goto do_curly; | |
1038 | } | |
1039 | } | |
1040 | if (flags & SCF_DO_SUBSTR) | |
1041 | data->pos_min++; | |
1042 | min++; | |
1043 | /* Fall through. */ | |
1044 | case STAR: | |
653099ff GS |
1045 | if (flags & SCF_DO_STCLASS) { |
1046 | mincount = 0; | |
b81d288d | 1047 | maxcount = REG_INFTY; |
653099ff GS |
1048 | next = regnext(scan); |
1049 | scan = NEXTOPER(scan); | |
1050 | goto do_curly; | |
1051 | } | |
b81d288d | 1052 | is_inf = is_inf_internal = 1; |
c277df42 IZ |
1053 | scan = regnext(scan); |
1054 | if (flags & SCF_DO_SUBSTR) { | |
830247a4 | 1055 | scan_commit(pRExC_state, data); /* Cannot extend fixed substrings */ |
c277df42 IZ |
1056 | data->longest = &(data->longest_float); |
1057 | } | |
1058 | goto optimize_curly_tail; | |
1059 | case CURLY: | |
b81d288d | 1060 | mincount = ARG1(scan); |
c277df42 IZ |
1061 | maxcount = ARG2(scan); |
1062 | next = regnext(scan); | |
cb434fcc IZ |
1063 | if (OP(scan) == CURLYX) { |
1064 | I32 lp = (data ? *(data->last_closep) : 0); | |
1065 | ||
1066 | scan->flags = ((lp <= U8_MAX) ? lp : U8_MAX); | |
1067 | } | |
c277df42 | 1068 | scan = NEXTOPER(scan) + EXTRA_STEP_2ARGS; |
727f22e3 | 1069 | next_is_eval = (OP(scan) == EVAL); |
c277df42 IZ |
1070 | do_curly: |
1071 | if (flags & SCF_DO_SUBSTR) { | |
830247a4 | 1072 | if (mincount == 0) scan_commit(pRExC_state,data); /* Cannot extend fixed substrings */ |
c277df42 IZ |
1073 | pos_before = data->pos_min; |
1074 | } | |
1075 | if (data) { | |
1076 | fl = data->flags; | |
1077 | data->flags &= ~(SF_HAS_PAR|SF_IN_PAR|SF_HAS_EVAL); | |
1078 | if (is_inf) | |
1079 | data->flags |= SF_IS_INF; | |
1080 | } | |
653099ff | 1081 | if (flags & SCF_DO_STCLASS) { |
830247a4 | 1082 | cl_init(pRExC_state, &this_class); |
653099ff GS |
1083 | oclass = data->start_class; |
1084 | data->start_class = &this_class; | |
1085 | f |= SCF_DO_STCLASS_AND; | |
1086 | f &= ~SCF_DO_STCLASS_OR; | |
1087 | } | |
e1901655 IZ |
1088 | /* These are the cases when once a subexpression |
1089 | fails at a particular position, it cannot succeed | |
1090 | even after backtracking at the enclosing scope. | |
b81d288d | 1091 | |
e1901655 IZ |
1092 | XXXX what if minimal match and we are at the |
1093 | initial run of {n,m}? */ | |
1094 | if ((mincount != maxcount - 1) && (maxcount != REG_INFTY)) | |
1095 | f &= ~SCF_WHILEM_VISITED_POS; | |
653099ff | 1096 | |
c277df42 | 1097 | /* This will finish on WHILEM, setting scan, or on NULL: */ |
b81d288d AB |
1098 | minnext = study_chunk(pRExC_state, &scan, &deltanext, last, data, |
1099 | mincount == 0 | |
653099ff GS |
1100 | ? (f & ~SCF_DO_SUBSTR) : f); |
1101 | ||
1102 | if (flags & SCF_DO_STCLASS) | |
1103 | data->start_class = oclass; | |
1104 | if (mincount == 0 || minnext == 0) { | |
1105 | if (flags & SCF_DO_STCLASS_OR) { | |
830247a4 | 1106 | cl_or(pRExC_state, data->start_class, &this_class); |
653099ff GS |
1107 | } |
1108 | else if (flags & SCF_DO_STCLASS_AND) { | |
b81d288d | 1109 | /* Switch to OR mode: cache the old value of |
653099ff GS |
1110 | * data->start_class */ |
1111 | StructCopy(data->start_class, &and_with, | |
1112 | struct regnode_charclass_class); | |
1113 | flags &= ~SCF_DO_STCLASS_AND; | |
1114 | StructCopy(&this_class, data->start_class, | |
1115 | struct regnode_charclass_class); | |
1116 | flags |= SCF_DO_STCLASS_OR; | |
1117 | data->start_class->flags |= ANYOF_EOS; | |
1118 | } | |
1119 | } else { /* Non-zero len */ | |
1120 | if (flags & SCF_DO_STCLASS_OR) { | |
830247a4 | 1121 | cl_or(pRExC_state, data->start_class, &this_class); |
653099ff GS |
1122 | cl_and(data->start_class, &and_with); |
1123 | } | |
1124 | else if (flags & SCF_DO_STCLASS_AND) | |
1125 | cl_and(data->start_class, &this_class); | |
1126 | flags &= ~SCF_DO_STCLASS; | |
1127 | } | |
c277df42 IZ |
1128 | if (!scan) /* It was not CURLYX, but CURLY. */ |
1129 | scan = next; | |
84037bb0 | 1130 | if (ckWARN(WARN_REGEXP) |
727f22e3 JP |
1131 | /* ? quantifier ok, except for (?{ ... }) */ |
1132 | && (next_is_eval || !(mincount == 0 && maxcount == 1)) | |
84037bb0 | 1133 | && (minnext == 0) && (deltanext == 0) |
99799961 | 1134 | && data && !(data->flags & (SF_HAS_PAR|SF_IN_PAR)) |
17feb5d5 | 1135 | && maxcount <= REG_INFTY/3) /* Complement check for big count */ |
b45f050a | 1136 | { |
830247a4 | 1137 | vWARN(RExC_parse, |
b45f050a JF |
1138 | "Quantifier unexpected on zero-length expression"); |
1139 | } | |
1140 | ||
c277df42 | 1141 | min += minnext * mincount; |
b81d288d | 1142 | is_inf_internal |= ((maxcount == REG_INFTY |
155aba94 GS |
1143 | && (minnext + deltanext) > 0) |
1144 | || deltanext == I32_MAX); | |
aca2d497 | 1145 | is_inf |= is_inf_internal; |
c277df42 IZ |
1146 | delta += (minnext + deltanext) * maxcount - minnext * mincount; |
1147 | ||
1148 | /* Try powerful optimization CURLYX => CURLYN. */ | |
b81d288d | 1149 | if ( OP(oscan) == CURLYX && data |
c277df42 IZ |
1150 | && data->flags & SF_IN_PAR |
1151 | && !(data->flags & SF_HAS_EVAL) | |
1152 | && !deltanext && minnext == 1 ) { | |
1153 | /* Try to optimize to CURLYN. */ | |
1154 | regnode *nxt = NEXTOPER(oscan) + EXTRA_STEP_2ARGS; | |
497b47a8 JH |
1155 | regnode *nxt1 = nxt; |
1156 | #ifdef DEBUGGING | |
1157 | regnode *nxt2; | |
1158 | #endif | |
c277df42 IZ |
1159 | |
1160 | /* Skip open. */ | |
1161 | nxt = regnext(nxt); | |
4d61ec05 | 1162 | if (!strchr((char*)PL_simple,OP(nxt)) |
22c35a8c | 1163 | && !(PL_regkind[(U8)OP(nxt)] == EXACT |
b81d288d | 1164 | && STR_LEN(nxt) == 1)) |
c277df42 | 1165 | goto nogo; |
497b47a8 | 1166 | #ifdef DEBUGGING |
c277df42 | 1167 | nxt2 = nxt; |
497b47a8 | 1168 | #endif |
c277df42 | 1169 | nxt = regnext(nxt); |
b81d288d | 1170 | if (OP(nxt) != CLOSE) |
c277df42 IZ |
1171 | goto nogo; |
1172 | /* Now we know that nxt2 is the only contents: */ | |
eb160463 | 1173 | oscan->flags = (U8)ARG(nxt); |
c277df42 IZ |
1174 | OP(oscan) = CURLYN; |
1175 | OP(nxt1) = NOTHING; /* was OPEN. */ | |
1176 | #ifdef DEBUGGING | |
1177 | OP(nxt1 + 1) = OPTIMIZED; /* was count. */ | |
1178 | NEXT_OFF(nxt1+ 1) = 0; /* just for consistancy. */ | |
1179 | NEXT_OFF(nxt2) = 0; /* just for consistancy with CURLY. */ | |
1180 | OP(nxt) = OPTIMIZED; /* was CLOSE. */ | |
1181 | OP(nxt + 1) = OPTIMIZED; /* was count. */ | |
1182 | NEXT_OFF(nxt+ 1) = 0; /* just for consistancy. */ | |
b81d288d | 1183 | #endif |
c277df42 | 1184 | } |
c277df42 IZ |
1185 | nogo: |
1186 | ||
1187 | /* Try optimization CURLYX => CURLYM. */ | |
b81d288d | 1188 | if ( OP(oscan) == CURLYX && data |
c277df42 | 1189 | && !(data->flags & SF_HAS_PAR) |
c277df42 | 1190 | && !(data->flags & SF_HAS_EVAL) |
0e788c72 HS |
1191 | && !deltanext /* atom is fixed width */ |
1192 | && minnext != 0 /* CURLYM can't handle zero width */ | |
1193 | ) { | |
c277df42 IZ |
1194 | /* XXXX How to optimize if data == 0? */ |
1195 | /* Optimize to a simpler form. */ | |
1196 | regnode *nxt = NEXTOPER(oscan) + EXTRA_STEP_2ARGS; /* OPEN */ | |
1197 | regnode *nxt2; | |
1198 | ||
1199 | OP(oscan) = CURLYM; | |
1200 | while ( (nxt2 = regnext(nxt)) /* skip over embedded stuff*/ | |
b81d288d | 1201 | && (OP(nxt2) != WHILEM)) |
c277df42 IZ |
1202 | nxt = nxt2; |
1203 | OP(nxt2) = SUCCEED; /* Whas WHILEM */ | |
c277df42 IZ |
1204 | /* Need to optimize away parenths. */ |
1205 | if (data->flags & SF_IN_PAR) { | |
1206 | /* Set the parenth number. */ | |
1207 | regnode *nxt1 = NEXTOPER(oscan) + EXTRA_STEP_2ARGS; /* OPEN*/ | |
1208 | ||
b81d288d | 1209 | if (OP(nxt) != CLOSE) |
b45f050a | 1210 | FAIL("Panic opt close"); |
eb160463 | 1211 | oscan->flags = (U8)ARG(nxt); |
c277df42 IZ |
1212 | OP(nxt1) = OPTIMIZED; /* was OPEN. */ |
1213 | OP(nxt) = OPTIMIZED; /* was CLOSE. */ | |
1214 | #ifdef DEBUGGING | |
1215 | OP(nxt1 + 1) = OPTIMIZED; /* was count. */ | |
1216 | OP(nxt + 1) = OPTIMIZED; /* was count. */ | |
1217 | NEXT_OFF(nxt1 + 1) = 0; /* just for consistancy. */ | |
1218 | NEXT_OFF(nxt + 1) = 0; /* just for consistancy. */ | |
b81d288d | 1219 | #endif |
c277df42 IZ |
1220 | #if 0 |
1221 | while ( nxt1 && (OP(nxt1) != WHILEM)) { | |
1222 | regnode *nnxt = regnext(nxt1); | |
b81d288d | 1223 | |
c277df42 IZ |
1224 | if (nnxt == nxt) { |
1225 | if (reg_off_by_arg[OP(nxt1)]) | |
1226 | ARG_SET(nxt1, nxt2 - nxt1); | |
1227 | else if (nxt2 - nxt1 < U16_MAX) | |
1228 | NEXT_OFF(nxt1) = nxt2 - nxt1; | |
1229 | else | |
1230 | OP(nxt) = NOTHING; /* Cannot beautify */ | |
1231 | } | |
1232 | nxt1 = nnxt; | |
1233 | } | |
1234 | #endif | |
1235 | /* Optimize again: */ | |
b81d288d | 1236 | study_chunk(pRExC_state, &nxt1, &deltanext, nxt, |
e1901655 | 1237 | NULL, 0); |
a0ed51b3 LW |
1238 | } |
1239 | else | |
c277df42 | 1240 | oscan->flags = 0; |
c277df42 | 1241 | } |
e1901655 IZ |
1242 | else if ((OP(oscan) == CURLYX) |
1243 | && (flags & SCF_WHILEM_VISITED_POS) | |
1244 | /* See the comment on a similar expression above. | |
1245 | However, this time it not a subexpression | |
1246 | we care about, but the expression itself. */ | |
1247 | && (maxcount == REG_INFTY) | |
1248 | && data && ++data->whilem_c < 16) { | |
1249 | /* This stays as CURLYX, we can put the count/of pair. */ | |
2c2d71f5 JH |
1250 | /* Find WHILEM (as in regexec.c) */ |
1251 | regnode *nxt = oscan + NEXT_OFF(oscan); | |
1252 | ||
1253 | if (OP(PREVOPER(nxt)) == NOTHING) /* LONGJMP */ | |
1254 | nxt += ARG(nxt); | |
eb160463 GS |
1255 | PREVOPER(nxt)->flags = (U8)(data->whilem_c |
1256 | | (RExC_whilem_seen << 4)); /* On WHILEM */ | |
2c2d71f5 | 1257 | } |
b81d288d | 1258 | if (data && fl & (SF_HAS_PAR|SF_IN_PAR)) |
c277df42 IZ |
1259 | pars++; |
1260 | if (flags & SCF_DO_SUBSTR) { | |
1261 | SV *last_str = Nullsv; | |
1262 | int counted = mincount != 0; | |
1263 | ||
1264 | if (data->last_end > 0 && mincount != 0) { /* Ends with a string. */ | |
5d1c421c JH |
1265 | #if defined(SPARC64_GCC_WORKAROUND) |
1266 | I32 b = 0; | |
1267 | STRLEN l = 0; | |
1268 | char *s = NULL; | |
1269 | I32 old = 0; | |
1270 | ||
1271 | if (pos_before >= data->last_start_min) | |
1272 | b = pos_before; | |
1273 | else | |
1274 | b = data->last_start_min; | |
1275 | ||
1276 | l = 0; | |
1277 | s = SvPV(data->last_found, l); | |
1278 | old = b - data->last_start_min; | |
1279 | ||
1280 | #else | |
b81d288d | 1281 | I32 b = pos_before >= data->last_start_min |
c277df42 IZ |
1282 | ? pos_before : data->last_start_min; |
1283 | STRLEN l; | |
1284 | char *s = SvPV(data->last_found, l); | |
a0ed51b3 | 1285 | I32 old = b - data->last_start_min; |
5d1c421c | 1286 | #endif |
a0ed51b3 LW |
1287 | |
1288 | if (UTF) | |
1289 | old = utf8_hop((U8*)s, old) - (U8*)s; | |
c277df42 | 1290 | |
a0ed51b3 | 1291 | l -= old; |
c277df42 | 1292 | /* Get the added string: */ |
79cb57f6 | 1293 | last_str = newSVpvn(s + old, l); |
0e933229 IH |
1294 | if (UTF) |
1295 | SvUTF8_on(last_str); | |
c277df42 IZ |
1296 | if (deltanext == 0 && pos_before == b) { |
1297 | /* What was added is a constant string */ | |
1298 | if (mincount > 1) { | |
1299 | SvGROW(last_str, (mincount * l) + 1); | |
b81d288d | 1300 | repeatcpy(SvPVX(last_str) + l, |
c277df42 IZ |
1301 | SvPVX(last_str), l, mincount - 1); |
1302 | SvCUR(last_str) *= mincount; | |
1303 | /* Add additional parts. */ | |
b81d288d | 1304 | SvCUR_set(data->last_found, |
c277df42 IZ |
1305 | SvCUR(data->last_found) - l); |
1306 | sv_catsv(data->last_found, last_str); | |
0eda9292 JH |
1307 | { |
1308 | SV * sv = data->last_found; | |
1309 | MAGIC *mg = | |
1310 | SvUTF8(sv) && SvMAGICAL(sv) ? | |
1311 | mg_find(sv, PERL_MAGIC_utf8) : NULL; | |
1312 | if (mg && mg->mg_len >= 0) | |
1313 | mg->mg_len += CHR_SVLEN(last_str); | |
1314 | } | |
c277df42 IZ |
1315 | data->last_end += l * (mincount - 1); |
1316 | } | |
2a8d9689 HS |
1317 | } else { |
1318 | /* start offset must point into the last copy */ | |
1319 | data->last_start_min += minnext * (mincount - 1); | |
c152dc43 HS |
1320 | data->last_start_max += is_inf ? I32_MAX |
1321 | : (maxcount - 1) * (minnext + data->pos_delta); | |
c277df42 IZ |
1322 | } |
1323 | } | |
1324 | /* It is counted once already... */ | |
1325 | data->pos_min += minnext * (mincount - counted); | |
1326 | data->pos_delta += - counted * deltanext + | |
1327 | (minnext + deltanext) * maxcount - minnext * mincount; | |
1328 | if (mincount != maxcount) { | |
653099ff GS |
1329 | /* Cannot extend fixed substrings found inside |
1330 | the group. */ | |
830247a4 | 1331 | scan_commit(pRExC_state,data); |
c277df42 IZ |
1332 | if (mincount && last_str) { |
1333 | sv_setsv(data->last_found, last_str); | |
1334 | data->last_end = data->pos_min; | |
b81d288d | 1335 | data->last_start_min = |
a0ed51b3 | 1336 | data->pos_min - CHR_SVLEN(last_str); |
b81d288d AB |
1337 | data->last_start_max = is_inf |
1338 | ? I32_MAX | |
c277df42 | 1339 | : data->pos_min + data->pos_delta |
a0ed51b3 | 1340 | - CHR_SVLEN(last_str); |
c277df42 IZ |
1341 | } |
1342 | data->longest = &(data->longest_float); | |
1343 | } | |
aca2d497 | 1344 | SvREFCNT_dec(last_str); |
c277df42 | 1345 | } |
405ff068 | 1346 | if (data && (fl & SF_HAS_EVAL)) |
c277df42 IZ |
1347 | data->flags |= SF_HAS_EVAL; |
1348 | optimize_curly_tail: | |
c277df42 | 1349 | if (OP(oscan) != CURLYX) { |
22c35a8c | 1350 | while (PL_regkind[(U8)OP(next = regnext(oscan))] == NOTHING |
c277df42 IZ |
1351 | && NEXT_OFF(next)) |
1352 | NEXT_OFF(oscan) += NEXT_OFF(next); | |
1353 | } | |
c277df42 | 1354 | continue; |
653099ff | 1355 | default: /* REF and CLUMP only? */ |
c277df42 | 1356 | if (flags & SCF_DO_SUBSTR) { |
830247a4 | 1357 | scan_commit(pRExC_state,data); /* Cannot expect anything... */ |
c277df42 IZ |
1358 | data->longest = &(data->longest_float); |
1359 | } | |
aca2d497 | 1360 | is_inf = is_inf_internal = 1; |
653099ff | 1361 | if (flags & SCF_DO_STCLASS_OR) |
830247a4 | 1362 | cl_anything(pRExC_state, data->start_class); |
653099ff | 1363 | flags &= ~SCF_DO_STCLASS; |
c277df42 IZ |
1364 | break; |
1365 | } | |
a0ed51b3 | 1366 | } |
ffc61ed2 | 1367 | else if (strchr((char*)PL_simple,OP(scan))) { |
9c5ffd7c | 1368 | int value = 0; |
653099ff | 1369 | |
c277df42 | 1370 | if (flags & SCF_DO_SUBSTR) { |
830247a4 | 1371 | scan_commit(pRExC_state,data); |
c277df42 IZ |
1372 | data->pos_min++; |
1373 | } | |
1374 | min++; | |
653099ff GS |
1375 | if (flags & SCF_DO_STCLASS) { |
1376 | data->start_class->flags &= ~ANYOF_EOS; /* No match on empty */ | |
1377 | ||
1378 | /* Some of the logic below assumes that switching | |
1379 | locale on will only add false positives. */ | |
1380 | switch (PL_regkind[(U8)OP(scan)]) { | |
653099ff | 1381 | case SANY: |
653099ff GS |
1382 | default: |
1383 | do_default: | |
1384 | /* Perl_croak(aTHX_ "panic: unexpected simple REx opcode %d", OP(scan)); */ | |
1385 | if (flags & SCF_DO_STCLASS_OR) /* Allow everything */ | |
830247a4 | 1386 | cl_anything(pRExC_state, data->start_class); |
653099ff GS |
1387 | break; |
1388 | case REG_ANY: | |
1389 | if (OP(scan) == SANY) | |
1390 | goto do_default; | |
1391 | if (flags & SCF_DO_STCLASS_OR) { /* Everything but \n */ | |
1392 | value = (ANYOF_BITMAP_TEST(data->start_class,'\n') | |
1393 | || (data->start_class->flags & ANYOF_CLASS)); | |
830247a4 | 1394 | cl_anything(pRExC_state, data->start_class); |
653099ff GS |
1395 | } |
1396 | if (flags & SCF_DO_STCLASS_AND || !value) | |
1397 | ANYOF_BITMAP_CLEAR(data->start_class,'\n'); | |
1398 | break; | |
1399 | case ANYOF: | |
1400 | if (flags & SCF_DO_STCLASS_AND) | |
1401 | cl_and(data->start_class, | |
1402 | (struct regnode_charclass_class*)scan); | |
1403 | else | |
830247a4 | 1404 | cl_or(pRExC_state, data->start_class, |
653099ff GS |
1405 | (struct regnode_charclass_class*)scan); |
1406 | break; | |
1407 | case ALNUM: | |
1408 | if (flags & SCF_DO_STCLASS_AND) { | |
1409 | if (!(data->start_class->flags & ANYOF_LOCALE)) { | |
1410 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NALNUM); | |
1411 | for (value = 0; value < 256; value++) | |
1412 | if (!isALNUM(value)) | |
1413 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1414 | } | |
1415 | } | |
1416 | else { | |
1417 | if (data->start_class->flags & ANYOF_LOCALE) | |
1418 | ANYOF_CLASS_SET(data->start_class,ANYOF_ALNUM); | |
1419 | else { | |
1420 | for (value = 0; value < 256; value++) | |
1421 | if (isALNUM(value)) | |
b81d288d | 1422 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1423 | } |
1424 | } | |
1425 | break; | |
1426 | case ALNUML: | |
1427 | if (flags & SCF_DO_STCLASS_AND) { | |
1428 | if (data->start_class->flags & ANYOF_LOCALE) | |
1429 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NALNUM); | |
1430 | } | |
1431 | else { | |
1432 | ANYOF_CLASS_SET(data->start_class,ANYOF_ALNUM); | |
1433 | data->start_class->flags |= ANYOF_LOCALE; | |
1434 | } | |
1435 | break; | |
1436 | case NALNUM: | |
1437 | if (flags & SCF_DO_STCLASS_AND) { | |
1438 | if (!(data->start_class->flags & ANYOF_LOCALE)) { | |
1439 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_ALNUM); | |
1440 | for (value = 0; value < 256; value++) | |
1441 | if (isALNUM(value)) | |
1442 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1443 | } | |
1444 | } | |
1445 | else { | |
1446 | if (data->start_class->flags & ANYOF_LOCALE) | |
1447 | ANYOF_CLASS_SET(data->start_class,ANYOF_NALNUM); | |
1448 | else { | |
1449 | for (value = 0; value < 256; value++) | |
1450 | if (!isALNUM(value)) | |
b81d288d | 1451 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1452 | } |
1453 | } | |
1454 | break; | |
1455 | case NALNUML: | |
1456 | if (flags & SCF_DO_STCLASS_AND) { | |
1457 | if (data->start_class->flags & ANYOF_LOCALE) | |
1458 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_ALNUM); | |
1459 | } | |
1460 | else { | |
1461 | data->start_class->flags |= ANYOF_LOCALE; | |
1462 | ANYOF_CLASS_SET(data->start_class,ANYOF_NALNUM); | |
1463 | } | |
1464 | break; | |
1465 | case SPACE: | |
1466 | if (flags & SCF_DO_STCLASS_AND) { | |
1467 | if (!(data->start_class->flags & ANYOF_LOCALE)) { | |
1468 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NSPACE); | |
1469 | for (value = 0; value < 256; value++) | |
1470 | if (!isSPACE(value)) | |
1471 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1472 | } | |
1473 | } | |
1474 | else { | |
1475 | if (data->start_class->flags & ANYOF_LOCALE) | |
1476 | ANYOF_CLASS_SET(data->start_class,ANYOF_SPACE); | |
1477 | else { | |
1478 | for (value = 0; value < 256; value++) | |
1479 | if (isSPACE(value)) | |
b81d288d | 1480 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1481 | } |
1482 | } | |
1483 | break; | |
1484 | case SPACEL: | |
1485 | if (flags & SCF_DO_STCLASS_AND) { | |
1486 | if (data->start_class->flags & ANYOF_LOCALE) | |
1487 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NSPACE); | |
1488 | } | |
1489 | else { | |
1490 | data->start_class->flags |= ANYOF_LOCALE; | |
1491 | ANYOF_CLASS_SET(data->start_class,ANYOF_SPACE); | |
1492 | } | |
1493 | break; | |
1494 | case NSPACE: | |
1495 | if (flags & SCF_DO_STCLASS_AND) { | |
1496 | if (!(data->start_class->flags & ANYOF_LOCALE)) { | |
1497 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_SPACE); | |
1498 | for (value = 0; value < 256; value++) | |
1499 | if (isSPACE(value)) | |
1500 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1501 | } | |
1502 | } | |
1503 | else { | |
1504 | if (data->start_class->flags & ANYOF_LOCALE) | |
1505 | ANYOF_CLASS_SET(data->start_class,ANYOF_NSPACE); | |
1506 | else { | |
1507 | for (value = 0; value < 256; value++) | |
1508 | if (!isSPACE(value)) | |
b81d288d | 1509 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1510 | } |
1511 | } | |
1512 | break; | |
1513 | case NSPACEL: | |
1514 | if (flags & SCF_DO_STCLASS_AND) { | |
1515 | if (data->start_class->flags & ANYOF_LOCALE) { | |
1516 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_SPACE); | |
1517 | for (value = 0; value < 256; value++) | |
1518 | if (!isSPACE(value)) | |
1519 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1520 | } | |
1521 | } | |
1522 | else { | |
1523 | data->start_class->flags |= ANYOF_LOCALE; | |
1524 | ANYOF_CLASS_SET(data->start_class,ANYOF_NSPACE); | |
1525 | } | |
1526 | break; | |
1527 | case DIGIT: | |
1528 | if (flags & SCF_DO_STCLASS_AND) { | |
1529 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NDIGIT); | |
1530 | for (value = 0; value < 256; value++) | |
1531 | if (!isDIGIT(value)) | |
1532 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1533 | } | |
1534 | else { | |
1535 | if (data->start_class->flags & ANYOF_LOCALE) | |
1536 | ANYOF_CLASS_SET(data->start_class,ANYOF_DIGIT); | |
1537 | else { | |
1538 | for (value = 0; value < 256; value++) | |
1539 | if (isDIGIT(value)) | |
b81d288d | 1540 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1541 | } |
1542 | } | |
1543 | break; | |
1544 | case NDIGIT: | |
1545 | if (flags & SCF_DO_STCLASS_AND) { | |
1546 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_DIGIT); | |
1547 | for (value = 0; value < 256; value++) | |
1548 | if (isDIGIT(value)) | |
1549 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1550 | } | |
1551 | else { | |
1552 | if (data->start_class->flags & ANYOF_LOCALE) | |
1553 | ANYOF_CLASS_SET(data->start_class,ANYOF_NDIGIT); | |
1554 | else { | |
1555 | for (value = 0; value < 256; value++) | |
1556 | if (!isDIGIT(value)) | |
b81d288d | 1557 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1558 | } |
1559 | } | |
1560 | break; | |
1561 | } | |
1562 | if (flags & SCF_DO_STCLASS_OR) | |
1563 | cl_and(data->start_class, &and_with); | |
1564 | flags &= ~SCF_DO_STCLASS; | |
1565 | } | |
a0ed51b3 | 1566 | } |
22c35a8c | 1567 | else if (PL_regkind[(U8)OP(scan)] == EOL && flags & SCF_DO_SUBSTR) { |
c277df42 IZ |
1568 | data->flags |= (OP(scan) == MEOL |
1569 | ? SF_BEFORE_MEOL | |
1570 | : SF_BEFORE_SEOL); | |
a0ed51b3 | 1571 | } |
653099ff GS |
1572 | else if ( PL_regkind[(U8)OP(scan)] == BRANCHJ |
1573 | /* Lookbehind, or need to calculate parens/evals/stclass: */ | |
1574 | && (scan->flags || data || (flags & SCF_DO_STCLASS)) | |
c277df42 | 1575 | && (OP(scan) == IFMATCH || OP(scan) == UNLESSM)) { |
653099ff | 1576 | /* Lookahead/lookbehind */ |
cb434fcc | 1577 | I32 deltanext, minnext, fake = 0; |
c277df42 | 1578 | regnode *nscan; |
653099ff GS |
1579 | struct regnode_charclass_class intrnl; |
1580 | int f = 0; | |
c277df42 IZ |
1581 | |
1582 | data_fake.flags = 0; | |
b81d288d | 1583 | if (data) { |
2c2d71f5 | 1584 | data_fake.whilem_c = data->whilem_c; |
cb434fcc IZ |
1585 | data_fake.last_closep = data->last_closep; |
1586 | } | |
1587 | else | |
1588 | data_fake.last_closep = &fake; | |
653099ff GS |
1589 | if ( flags & SCF_DO_STCLASS && !scan->flags |
1590 | && OP(scan) == IFMATCH ) { /* Lookahead */ | |
830247a4 | 1591 | cl_init(pRExC_state, &intrnl); |
653099ff | 1592 | data_fake.start_class = &intrnl; |
e1901655 | 1593 | f |= SCF_DO_STCLASS_AND; |
653099ff | 1594 | } |
e1901655 IZ |
1595 | if (flags & SCF_WHILEM_VISITED_POS) |
1596 | f |= SCF_WHILEM_VISITED_POS; | |
c277df42 IZ |
1597 | next = regnext(scan); |
1598 | nscan = NEXTOPER(NEXTOPER(scan)); | |
830247a4 | 1599 | minnext = study_chunk(pRExC_state, &nscan, &deltanext, last, &data_fake, f); |
c277df42 IZ |
1600 | if (scan->flags) { |
1601 | if (deltanext) { | |
9baa0206 | 1602 | vFAIL("Variable length lookbehind not implemented"); |
a0ed51b3 LW |
1603 | } |
1604 | else if (minnext > U8_MAX) { | |
9baa0206 | 1605 | vFAIL2("Lookbehind longer than %"UVuf" not implemented", (UV)U8_MAX); |
c277df42 | 1606 | } |
eb160463 | 1607 | scan->flags = (U8)minnext; |
c277df42 IZ |
1608 | } |
1609 | if (data && data_fake.flags & (SF_HAS_PAR|SF_IN_PAR)) | |
1610 | pars++; | |
405ff068 | 1611 | if (data && (data_fake.flags & SF_HAS_EVAL)) |
c277df42 | 1612 | data->flags |= SF_HAS_EVAL; |
2c2d71f5 JH |
1613 | if (data) |
1614 | data->whilem_c = data_fake.whilem_c; | |
e1901655 | 1615 | if (f & SCF_DO_STCLASS_AND) { |
653099ff GS |
1616 | int was = (data->start_class->flags & ANYOF_EOS); |
1617 | ||
1618 | cl_and(data->start_class, &intrnl); | |
1619 | if (was) | |
1620 | data->start_class->flags |= ANYOF_EOS; | |
1621 | } | |
a0ed51b3 LW |
1622 | } |
1623 | else if (OP(scan) == OPEN) { | |
c277df42 | 1624 | pars++; |
a0ed51b3 | 1625 | } |
cb434fcc | 1626 | else if (OP(scan) == CLOSE) { |
eb160463 | 1627 | if ((I32)ARG(scan) == is_par) { |
cb434fcc | 1628 | next = regnext(scan); |
c277df42 | 1629 | |
cb434fcc IZ |
1630 | if ( next && (OP(next) != WHILEM) && next < last) |
1631 | is_par = 0; /* Disable optimization */ | |
1632 | } | |
1633 | if (data) | |
1634 | *(data->last_closep) = ARG(scan); | |
a0ed51b3 LW |
1635 | } |
1636 | else if (OP(scan) == EVAL) { | |
c277df42 IZ |
1637 | if (data) |
1638 | data->flags |= SF_HAS_EVAL; | |
1639 | } | |
96776eda | 1640 | else if (OP(scan) == LOGICAL && scan->flags == 2) { /* Embedded follows */ |
0f5d15d6 | 1641 | if (flags & SCF_DO_SUBSTR) { |
830247a4 | 1642 | scan_commit(pRExC_state,data); |
0f5d15d6 IZ |
1643 | data->longest = &(data->longest_float); |
1644 | } | |
1645 | is_inf = is_inf_internal = 1; | |
653099ff | 1646 | if (flags & SCF_DO_STCLASS_OR) /* Allow everything */ |
830247a4 | 1647 | cl_anything(pRExC_state, data->start_class); |
96776eda | 1648 | flags &= ~SCF_DO_STCLASS; |
0f5d15d6 | 1649 | } |
c277df42 IZ |
1650 | /* Else: zero-length, ignore. */ |
1651 | scan = regnext(scan); | |
1652 | } | |
1653 | ||
1654 | finish: | |
1655 | *scanp = scan; | |
aca2d497 | 1656 | *deltap = is_inf_internal ? I32_MAX : delta; |
b81d288d | 1657 | if (flags & SCF_DO_SUBSTR && is_inf) |
c277df42 IZ |
1658 | data->pos_delta = I32_MAX - data->pos_min; |
1659 | if (is_par > U8_MAX) | |
1660 | is_par = 0; | |
1661 | if (is_par && pars==1 && data) { | |
1662 | data->flags |= SF_IN_PAR; | |
1663 | data->flags &= ~SF_HAS_PAR; | |
a0ed51b3 LW |
1664 | } |
1665 | else if (pars && data) { | |
c277df42 IZ |
1666 | data->flags |= SF_HAS_PAR; |
1667 | data->flags &= ~SF_IN_PAR; | |
1668 | } | |
653099ff GS |
1669 | if (flags & SCF_DO_STCLASS_OR) |
1670 | cl_and(data->start_class, &and_with); | |
c277df42 IZ |
1671 | return min; |
1672 | } | |
1673 | ||
76e3520e | 1674 | STATIC I32 |
830247a4 | 1675 | S_add_data(pTHX_ RExC_state_t *pRExC_state, I32 n, char *s) |
c277df42 | 1676 | { |
830247a4 | 1677 | if (RExC_rx->data) { |
b81d288d AB |
1678 | Renewc(RExC_rx->data, |
1679 | sizeof(*RExC_rx->data) + sizeof(void*) * (RExC_rx->data->count + n - 1), | |
c277df42 | 1680 | char, struct reg_data); |
830247a4 IZ |
1681 | Renew(RExC_rx->data->what, RExC_rx->data->count + n, U8); |
1682 | RExC_rx->data->count += n; | |
a0ed51b3 LW |
1683 | } |
1684 | else { | |
830247a4 | 1685 | Newc(1207, RExC_rx->data, sizeof(*RExC_rx->data) + sizeof(void*) * (n - 1), |
c277df42 | 1686 | char, struct reg_data); |
830247a4 IZ |
1687 | New(1208, RExC_rx->data->what, n, U8); |
1688 | RExC_rx->data->count = n; | |
c277df42 | 1689 | } |
830247a4 IZ |
1690 | Copy(s, RExC_rx->data->what + RExC_rx->data->count - n, n, U8); |
1691 | return RExC_rx->data->count - n; | |
c277df42 IZ |
1692 | } |
1693 | ||
d88dccdf | 1694 | void |
864dbfa3 | 1695 | Perl_reginitcolors(pTHX) |
d88dccdf | 1696 | { |
d88dccdf IZ |
1697 | int i = 0; |
1698 | char *s = PerlEnv_getenv("PERL_RE_COLORS"); | |
b81d288d | 1699 | |
d88dccdf IZ |
1700 | if (s) { |
1701 | PL_colors[0] = s = savepv(s); | |
1702 | while (++i < 6) { | |
1703 | s = strchr(s, '\t'); | |
1704 | if (s) { | |
1705 | *s = '\0'; | |
1706 | PL_colors[i] = ++s; | |
1707 | } | |
1708 | else | |
c712d376 | 1709 | PL_colors[i] = s = ""; |
d88dccdf IZ |
1710 | } |
1711 | } else { | |
b81d288d | 1712 | while (i < 6) |
d88dccdf IZ |
1713 | PL_colors[i++] = ""; |
1714 | } | |
1715 | PL_colorset = 1; | |
1716 | } | |
1717 | ||
8615cb43 | 1718 | |
a687059c | 1719 | /* |
e50aee73 | 1720 | - pregcomp - compile a regular expression into internal code |
a687059c LW |
1721 | * |
1722 | * We can't allocate space until we know how big the compiled form will be, | |
1723 | * but we can't compile it (and thus know how big it is) until we've got a | |
1724 | * place to put the code. So we cheat: we compile it twice, once with code | |
1725 | * generation turned off and size counting turned on, and once "for real". | |
1726 | * This also means that we don't allocate space until we are sure that the | |
1727 | * thing really will compile successfully, and we never have to move the | |
1728 | * code and thus invalidate pointers into it. (Note that it has to be in | |
1729 | * one piece because free() must be able to free it all.) [NB: not true in perl] | |
1730 | * | |
1731 | * Beware that the optimization-preparation code in here knows about some | |
1732 | * of the structure of the compiled regexp. [I'll say.] | |
1733 | */ | |
1734 | regexp * | |
864dbfa3 | 1735 | Perl_pregcomp(pTHX_ char *exp, char *xend, PMOP *pm) |
a687059c | 1736 | { |
a0d0e21e | 1737 | register regexp *r; |
c277df42 | 1738 | regnode *scan; |
c277df42 | 1739 | regnode *first; |
a0d0e21e | 1740 | I32 flags; |
a0d0e21e LW |
1741 | I32 minlen = 0; |
1742 | I32 sawplus = 0; | |
1743 | I32 sawopen = 0; | |
2c2d71f5 | 1744 | scan_data_t data; |
830247a4 IZ |
1745 | RExC_state_t RExC_state; |
1746 | RExC_state_t *pRExC_state = &RExC_state; | |
a0d0e21e LW |
1747 | |
1748 | if (exp == NULL) | |
c277df42 | 1749 | FAIL("NULL regexp argument"); |
a0d0e21e | 1750 | |
a5961de5 | 1751 | RExC_utf8 = pm->op_pmdynflags & PMdf_CMP_UTF8; |
a0ed51b3 | 1752 | |
5cfc7842 | 1753 | RExC_precomp = exp; |
a5961de5 JH |
1754 | DEBUG_r({ |
1755 | if (!PL_colorset) reginitcolors(); | |
1756 | PerlIO_printf(Perl_debug_log, "%sCompiling REx%s `%s%*s%s'\n", | |
1757 | PL_colors[4],PL_colors[5],PL_colors[0], | |
1758 | (int)(xend - exp), RExC_precomp, PL_colors[1]); | |
1759 | }); | |
e2509266 | 1760 | RExC_flags = pm->op_pmflags; |
830247a4 | 1761 | RExC_sawback = 0; |
bbce6d69 | 1762 | |
830247a4 IZ |
1763 | RExC_seen = 0; |
1764 | RExC_seen_zerolen = *exp == '^' ? -1 : 0; | |
1765 | RExC_seen_evals = 0; | |
1766 | RExC_extralen = 0; | |
c277df42 | 1767 | |
bbce6d69 | 1768 | /* First pass: determine size, legality. */ |
830247a4 | 1769 | RExC_parse = exp; |
fac92740 | 1770 | RExC_start = exp; |
830247a4 IZ |
1771 | RExC_end = xend; |
1772 | RExC_naughty = 0; | |
1773 | RExC_npar = 1; | |
1774 | RExC_size = 0L; | |
1775 | RExC_emit = &PL_regdummy; | |
1776 | RExC_whilem_seen = 0; | |
85ddcde9 JH |
1777 | #if 0 /* REGC() is (currently) a NOP at the first pass. |
1778 | * Clever compilers notice this and complain. --jhi */ | |
830247a4 | 1779 | REGC((U8)REG_MAGIC, (char*)RExC_emit); |
85ddcde9 | 1780 | #endif |
830247a4 | 1781 | if (reg(pRExC_state, 0, &flags) == NULL) { |
830247a4 | 1782 | RExC_precomp = Nullch; |
a0d0e21e LW |
1783 | return(NULL); |
1784 | } | |
830247a4 | 1785 | DEBUG_r(PerlIO_printf(Perl_debug_log, "size %"IVdf" ", (IV)RExC_size)); |
c277df42 | 1786 | |
c277df42 IZ |
1787 | /* Small enough for pointer-storage convention? |
1788 | If extralen==0, this means that we will not need long jumps. */ | |
830247a4 IZ |
1789 | if (RExC_size >= 0x10000L && RExC_extralen) |
1790 | RExC_size += RExC_extralen; | |
c277df42 | 1791 | else |
830247a4 IZ |
1792 | RExC_extralen = 0; |
1793 | if (RExC_whilem_seen > 15) | |
1794 | RExC_whilem_seen = 15; | |
a0d0e21e | 1795 | |
bbce6d69 | 1796 | /* Allocate space and initialize. */ |
830247a4 | 1797 | Newc(1001, r, sizeof(regexp) + (unsigned)RExC_size * sizeof(regnode), |
c277df42 | 1798 | char, regexp); |
a0d0e21e | 1799 | if (r == NULL) |
b45f050a JF |
1800 | FAIL("Regexp out of space"); |
1801 | ||
0f79a09d GS |
1802 | #ifdef DEBUGGING |
1803 | /* avoid reading uninitialized memory in DEBUGGING code in study_chunk() */ | |
830247a4 | 1804 | Zero(r, sizeof(regexp) + (unsigned)RExC_size * sizeof(regnode), char); |
0f79a09d | 1805 | #endif |
c277df42 | 1806 | r->refcnt = 1; |
bbce6d69 | 1807 | r->prelen = xend - exp; |
5cfc7842 | 1808 | r->precomp = savepvn(RExC_precomp, r->prelen); |
cf93c79d | 1809 | r->subbeg = NULL; |
ed252734 NC |
1810 | #ifdef PERL_COPY_ON_WRITE |
1811 | r->saved_copy = Nullsv; | |
1812 | #endif | |
cf93c79d | 1813 | r->reganch = pm->op_pmflags & PMf_COMPILETIME; |
830247a4 | 1814 | r->nparens = RExC_npar - 1; /* set early to validate backrefs */ |
4327152a IZ |
1815 | |
1816 | r->substrs = 0; /* Useful during FAIL. */ | |
1817 | r->startp = 0; /* Useful during FAIL. */ | |
1818 | r->endp = 0; /* Useful during FAIL. */ | |
1819 | ||
fac92740 MJD |
1820 | Newz(1304, r->offsets, 2*RExC_size+1, U32); /* MJD 20001228 */ |
1821 | if (r->offsets) { | |
1822 | r->offsets[0] = RExC_size; | |
1823 | } | |
1824 | DEBUG_r(PerlIO_printf(Perl_debug_log, | |
392fbf5d | 1825 | "%s %"UVuf" bytes for offset annotations.\n", |
fac92740 | 1826 | r->offsets ? "Got" : "Couldn't get", |
392fbf5d | 1827 | (UV)((2*RExC_size+1) * sizeof(U32)))); |
fac92740 | 1828 | |
830247a4 | 1829 | RExC_rx = r; |
bbce6d69 | 1830 | |
1831 | /* Second pass: emit code. */ | |
e2509266 | 1832 | RExC_flags = pm->op_pmflags; /* don't let top level (?i) bleed */ |
830247a4 IZ |
1833 | RExC_parse = exp; |
1834 | RExC_end = xend; | |
1835 | RExC_naughty = 0; | |
1836 | RExC_npar = 1; | |
fac92740 | 1837 | RExC_emit_start = r->program; |
830247a4 | 1838 | RExC_emit = r->program; |
2cd61cdb | 1839 | /* Store the count of eval-groups for security checks: */ |
eb160463 | 1840 | RExC_emit->next_off = (U16)((RExC_seen_evals > U16_MAX) ? U16_MAX : RExC_seen_evals); |
830247a4 | 1841 | REGC((U8)REG_MAGIC, (char*) RExC_emit++); |
c277df42 | 1842 | r->data = 0; |
830247a4 | 1843 | if (reg(pRExC_state, 0, &flags) == NULL) |
a0d0e21e LW |
1844 | return(NULL); |
1845 | ||
1846 | /* Dig out information for optimizations. */ | |
cf93c79d | 1847 | r->reganch = pm->op_pmflags & PMf_COMPILETIME; /* Again? */ |
e2509266 | 1848 | pm->op_pmflags = RExC_flags; |
a0ed51b3 | 1849 | if (UTF) |
5ff6fc6d | 1850 | r->reganch |= ROPT_UTF8; /* Unicode in it? */ |
c277df42 | 1851 | r->regstclass = NULL; |
830247a4 | 1852 | if (RExC_naughty >= 10) /* Probably an expensive pattern. */ |
a0ed51b3 | 1853 | r->reganch |= ROPT_NAUGHTY; |
c277df42 | 1854 | scan = r->program + 1; /* First BRANCH. */ |
2779dcf1 IZ |
1855 | |
1856 | /* XXXX To minimize changes to RE engine we always allocate | |
1857 | 3-units-long substrs field. */ | |
1858 | Newz(1004, r->substrs, 1, struct reg_substr_data); | |
1859 | ||
2c2d71f5 | 1860 | StructCopy(&zero_scan_data, &data, scan_data_t); |
653099ff | 1861 | /* XXXX Should not we check for something else? Usually it is OPEN1... */ |
c277df42 | 1862 | if (OP(scan) != BRANCH) { /* Only one top-level choice. */ |
c277df42 | 1863 | I32 fake; |
c5254dd6 | 1864 | STRLEN longest_float_length, longest_fixed_length; |
653099ff GS |
1865 | struct regnode_charclass_class ch_class; |
1866 | int stclass_flag; | |
cb434fcc | 1867 | I32 last_close = 0; |
a0d0e21e LW |
1868 | |
1869 | first = scan; | |
c277df42 | 1870 | /* Skip introductions and multiplicators >= 1. */ |
a0d0e21e | 1871 | while ((OP(first) == OPEN && (sawopen = 1)) || |
653099ff | 1872 | /* An OR of *one* alternative - should not happen now. */ |
a0d0e21e LW |
1873 | (OP(first) == BRANCH && OP(regnext(first)) != BRANCH) || |
1874 | (OP(first) == PLUS) || | |
1875 | (OP(first) == MINMOD) || | |
653099ff | 1876 | /* An {n,m} with n>0 */ |
22c35a8c | 1877 | (PL_regkind[(U8)OP(first)] == CURLY && ARG1(first) > 0) ) { |
a0d0e21e LW |
1878 | if (OP(first) == PLUS) |
1879 | sawplus = 1; | |
1880 | else | |
1881 | first += regarglen[(U8)OP(first)]; | |
1882 | first = NEXTOPER(first); | |
a687059c LW |
1883 | } |
1884 | ||
a0d0e21e LW |
1885 | /* Starting-point info. */ |
1886 | again: | |
653099ff | 1887 | if (PL_regkind[(U8)OP(first)] == EXACT) { |
1aa99e6b IH |
1888 | if (OP(first) == EXACT) |
1889 | ; /* Empty, get anchored substr later. */ | |
1890 | else if ((OP(first) == EXACTF || OP(first) == EXACTFL)) | |
b3c9acc1 IZ |
1891 | r->regstclass = first; |
1892 | } | |
653099ff | 1893 | else if (strchr((char*)PL_simple,OP(first))) |
a0d0e21e | 1894 | r->regstclass = first; |
22c35a8c GS |
1895 | else if (PL_regkind[(U8)OP(first)] == BOUND || |
1896 | PL_regkind[(U8)OP(first)] == NBOUND) | |
a0d0e21e | 1897 | r->regstclass = first; |
22c35a8c | 1898 | else if (PL_regkind[(U8)OP(first)] == BOL) { |
cad2e5aa JH |
1899 | r->reganch |= (OP(first) == MBOL |
1900 | ? ROPT_ANCH_MBOL | |
1901 | : (OP(first) == SBOL | |
1902 | ? ROPT_ANCH_SBOL | |
1903 | : ROPT_ANCH_BOL)); | |
a0d0e21e | 1904 | first = NEXTOPER(first); |
774d564b | 1905 | goto again; |
1906 | } | |
1907 | else if (OP(first) == GPOS) { | |
1908 | r->reganch |= ROPT_ANCH_GPOS; | |
1909 | first = NEXTOPER(first); | |
1910 | goto again; | |
a0d0e21e | 1911 | } |
e09294f4 | 1912 | else if (!sawopen && (OP(first) == STAR && |
22c35a8c | 1913 | PL_regkind[(U8)OP(NEXTOPER(first))] == REG_ANY) && |
a0d0e21e LW |
1914 | !(r->reganch & ROPT_ANCH) ) |
1915 | { | |
1916 | /* turn .* into ^.* with an implied $*=1 */ | |
cad2e5aa JH |
1917 | int type = OP(NEXTOPER(first)); |
1918 | ||
ffc61ed2 | 1919 | if (type == REG_ANY) |
cad2e5aa JH |
1920 | type = ROPT_ANCH_MBOL; |
1921 | else | |
1922 | type = ROPT_ANCH_SBOL; | |
1923 | ||
1924 | r->reganch |= type | ROPT_IMPLICIT; | |
a0d0e21e | 1925 | first = NEXTOPER(first); |
774d564b | 1926 | goto again; |
a0d0e21e | 1927 | } |
b81d288d | 1928 | if (sawplus && (!sawopen || !RExC_sawback) |
830247a4 | 1929 | && !(RExC_seen & REG_SEEN_EVAL)) /* May examine pos and $& */ |
cad2e5aa JH |
1930 | /* x+ must match at the 1st pos of run of x's */ |
1931 | r->reganch |= ROPT_SKIP; | |
a0d0e21e | 1932 | |
c277df42 | 1933 | /* Scan is after the zeroth branch, first is atomic matcher. */ |
b81d288d | 1934 | DEBUG_r(PerlIO_printf(Perl_debug_log, "first at %"IVdf"\n", |
b900a521 | 1935 | (IV)(first - scan + 1))); |
a0d0e21e LW |
1936 | /* |
1937 | * If there's something expensive in the r.e., find the | |
1938 | * longest literal string that must appear and make it the | |
1939 | * regmust. Resolve ties in favor of later strings, since | |
1940 | * the regstart check works with the beginning of the r.e. | |
1941 | * and avoiding duplication strengthens checking. Not a | |
1942 | * strong reason, but sufficient in the absence of others. | |
1943 | * [Now we resolve ties in favor of the earlier string if | |
c277df42 | 1944 | * it happens that c_offset_min has been invalidated, since the |
a0d0e21e LW |
1945 | * earlier string may buy us something the later one won't.] |
1946 | */ | |
a0d0e21e | 1947 | minlen = 0; |
a687059c | 1948 | |
79cb57f6 GS |
1949 | data.longest_fixed = newSVpvn("",0); |
1950 | data.longest_float = newSVpvn("",0); | |
1951 | data.last_found = newSVpvn("",0); | |
c277df42 IZ |
1952 | data.longest = &(data.longest_fixed); |
1953 | first = scan; | |
653099ff | 1954 | if (!r->regstclass) { |
830247a4 | 1955 | cl_init(pRExC_state, &ch_class); |
653099ff GS |
1956 | data.start_class = &ch_class; |
1957 | stclass_flag = SCF_DO_STCLASS_AND; | |
1958 | } else /* XXXX Check for BOUND? */ | |
1959 | stclass_flag = 0; | |
cb434fcc | 1960 | data.last_closep = &last_close; |
653099ff | 1961 | |
830247a4 | 1962 | minlen = study_chunk(pRExC_state, &first, &fake, scan + RExC_size, /* Up to end */ |
e1901655 | 1963 | &data, SCF_DO_SUBSTR | SCF_WHILEM_VISITED_POS | stclass_flag); |
830247a4 | 1964 | if ( RExC_npar == 1 && data.longest == &(data.longest_fixed) |
b81d288d | 1965 | && data.last_start_min == 0 && data.last_end > 0 |
830247a4 IZ |
1966 | && !RExC_seen_zerolen |
1967 | && (!(RExC_seen & REG_SEEN_GPOS) || (r->reganch & ROPT_ANCH_GPOS))) | |
c277df42 | 1968 | r->reganch |= ROPT_CHECK_ALL; |
830247a4 | 1969 | scan_commit(pRExC_state, &data); |
c277df42 IZ |
1970 | SvREFCNT_dec(data.last_found); |
1971 | ||
a0ed51b3 | 1972 | longest_float_length = CHR_SVLEN(data.longest_float); |
c5254dd6 | 1973 | if (longest_float_length |
c277df42 IZ |
1974 | || (data.flags & SF_FL_BEFORE_EOL |
1975 | && (!(data.flags & SF_FL_BEFORE_MEOL) | |
e2509266 | 1976 | || (RExC_flags & PMf_MULTILINE)))) { |
cf93c79d IZ |
1977 | int t; |
1978 | ||
a0ed51b3 | 1979 | if (SvCUR(data.longest_fixed) /* ok to leave SvCUR */ |
aca2d497 IZ |
1980 | && data.offset_fixed == data.offset_float_min |
1981 | && SvCUR(data.longest_fixed) == SvCUR(data.longest_float)) | |
1982 | goto remove_float; /* As in (a)+. */ | |
1983 | ||
33b8afdf JH |
1984 | if (SvUTF8(data.longest_float)) { |
1985 | r->float_utf8 = data.longest_float; | |
1986 | r->float_substr = Nullsv; | |
1987 | } else { | |
1988 | r->float_substr = data.longest_float; | |
1989 | r->float_utf8 = Nullsv; | |
1990 | } | |
c277df42 IZ |
1991 | r->float_min_offset = data.offset_float_min; |
1992 | r->float_max_offset = data.offset_float_max; | |
cf93c79d IZ |
1993 | t = (data.flags & SF_FL_BEFORE_EOL /* Can't have SEOL and MULTI */ |
1994 | && (!(data.flags & SF_FL_BEFORE_MEOL) | |
e2509266 | 1995 | || (RExC_flags & PMf_MULTILINE))); |
33b8afdf | 1996 | fbm_compile(data.longest_float, t ? FBMcf_TAIL : 0); |
a0ed51b3 LW |
1997 | } |
1998 | else { | |
aca2d497 | 1999 | remove_float: |
33b8afdf | 2000 | r->float_substr = r->float_utf8 = Nullsv; |
c277df42 | 2001 | SvREFCNT_dec(data.longest_float); |
c5254dd6 | 2002 | longest_float_length = 0; |
a0d0e21e | 2003 | } |
c277df42 | 2004 | |
a0ed51b3 | 2005 | longest_fixed_length = CHR_SVLEN(data.longest_fixed); |
c5254dd6 | 2006 | if (longest_fixed_length |
c277df42 IZ |
2007 | || (data.flags & SF_FIX_BEFORE_EOL /* Cannot have SEOL and MULTI */ |
2008 | && (!(data.flags & SF_FIX_BEFORE_MEOL) | |
e2509266 | 2009 | || (RExC_flags & PMf_MULTILINE)))) { |
cf93c79d IZ |
2010 | int t; |
2011 | ||
33b8afdf JH |
2012 | if (SvUTF8(data.longest_fixed)) { |
2013 | r->anchored_utf8 = data.longest_fixed; | |
2014 | r->anchored_substr = Nullsv; | |
2015 | } else { | |
2016 | r->anchored_substr = data.longest_fixed; | |
2017 | r->anchored_utf8 = Nullsv; | |
2018 | } | |
c277df42 | 2019 | r->anchored_offset = data.offset_fixed; |
cf93c79d IZ |
2020 | t = (data.flags & SF_FIX_BEFORE_EOL /* Can't have SEOL and MULTI */ |
2021 | && (!(data.flags & SF_FIX_BEFORE_MEOL) | |
e2509266 | 2022 | || (RExC_flags & PMf_MULTILINE))); |
33b8afdf | 2023 | fbm_compile(data.longest_fixed, t ? FBMcf_TAIL : 0); |
a0ed51b3 LW |
2024 | } |
2025 | else { | |
33b8afdf | 2026 | r->anchored_substr = r->anchored_utf8 = Nullsv; |
c277df42 | 2027 | SvREFCNT_dec(data.longest_fixed); |
c5254dd6 | 2028 | longest_fixed_length = 0; |
a0d0e21e | 2029 | } |
b81d288d | 2030 | if (r->regstclass |
ffc61ed2 | 2031 | && (OP(r->regstclass) == REG_ANY || OP(r->regstclass) == SANY)) |
653099ff | 2032 | r->regstclass = NULL; |
33b8afdf JH |
2033 | if ((!(r->anchored_substr || r->anchored_utf8) || r->anchored_offset) |
2034 | && stclass_flag | |
653099ff | 2035 | && !(data.start_class->flags & ANYOF_EOS) |
eb160463 GS |
2036 | && !cl_is_anything(data.start_class)) |
2037 | { | |
830247a4 | 2038 | I32 n = add_data(pRExC_state, 1, "f"); |
653099ff | 2039 | |
b81d288d | 2040 | New(1006, RExC_rx->data->data[n], 1, |
653099ff GS |
2041 | struct regnode_charclass_class); |
2042 | StructCopy(data.start_class, | |
830247a4 | 2043 | (struct regnode_charclass_class*)RExC_rx->data->data[n], |
653099ff | 2044 | struct regnode_charclass_class); |
830247a4 | 2045 | r->regstclass = (regnode*)RExC_rx->data->data[n]; |
653099ff | 2046 | r->reganch &= ~ROPT_SKIP; /* Used in find_byclass(). */ |
ffc61ed2 | 2047 | PL_regdata = r->data; /* for regprop() */ |
9c5ffd7c JH |
2048 | DEBUG_r({ SV *sv = sv_newmortal(); |
2049 | regprop(sv, (regnode*)data.start_class); | |
2050 | PerlIO_printf(Perl_debug_log, | |
2051 | "synthetic stclass `%s'.\n", | |
2052 | SvPVX(sv));}); | |
653099ff | 2053 | } |
c277df42 IZ |
2054 | |
2055 | /* A temporary algorithm prefers floated substr to fixed one to dig more info. */ | |
c5254dd6 | 2056 | if (longest_fixed_length > longest_float_length) { |
c277df42 | 2057 | r->check_substr = r->anchored_substr; |
33b8afdf | 2058 | r->check_utf8 = r->anchored_utf8; |
c277df42 IZ |
2059 | r->check_offset_min = r->check_offset_max = r->anchored_offset; |
2060 | if (r->reganch & ROPT_ANCH_SINGLE) | |
2061 | r->reganch |= ROPT_NOSCAN; | |
a0ed51b3 LW |
2062 | } |
2063 | else { | |
c277df42 | 2064 | r->check_substr = r->float_substr; |
33b8afdf | 2065 | r->check_utf8 = r->float_utf8; |
c277df42 IZ |
2066 | r->check_offset_min = data.offset_float_min; |
2067 | r->check_offset_max = data.offset_float_max; | |
a0d0e21e | 2068 | } |
30382c73 IZ |
2069 | /* XXXX Currently intuiting is not compatible with ANCH_GPOS. |
2070 | This should be changed ASAP! */ | |
33b8afdf | 2071 | if ((r->check_substr || r->check_utf8) && !(r->reganch & ROPT_ANCH_GPOS)) { |
cad2e5aa | 2072 | r->reganch |= RE_USE_INTUIT; |
33b8afdf | 2073 | if (SvTAIL(r->check_substr ? r->check_substr : r->check_utf8)) |
cad2e5aa JH |
2074 | r->reganch |= RE_INTUIT_TAIL; |
2075 | } | |
a0ed51b3 LW |
2076 | } |
2077 | else { | |
c277df42 IZ |
2078 | /* Several toplevels. Best we can is to set minlen. */ |
2079 | I32 fake; | |
653099ff | 2080 | struct regnode_charclass_class ch_class; |
cb434fcc | 2081 | I32 last_close = 0; |
c277df42 IZ |
2082 | |
2083 | DEBUG_r(PerlIO_printf(Perl_debug_log, "\n")); | |
2084 | scan = r->program + 1; | |
830247a4 | 2085 | cl_init(pRExC_state, &ch_class); |
653099ff | 2086 | data.start_class = &ch_class; |
cb434fcc | 2087 | data.last_closep = &last_close; |
e1901655 | 2088 | minlen = study_chunk(pRExC_state, &scan, &fake, scan + RExC_size, &data, SCF_DO_STCLASS_AND|SCF_WHILEM_VISITED_POS); |
33b8afdf JH |
2089 | r->check_substr = r->check_utf8 = r->anchored_substr = r->anchored_utf8 |
2090 | = r->float_substr = r->float_utf8 = Nullsv; | |
653099ff | 2091 | if (!(data.start_class->flags & ANYOF_EOS) |
eb160463 GS |
2092 | && !cl_is_anything(data.start_class)) |
2093 | { | |
830247a4 | 2094 | I32 n = add_data(pRExC_state, 1, "f"); |
653099ff | 2095 | |
b81d288d | 2096 | New(1006, RExC_rx->data->data[n], 1, |
653099ff GS |
2097 | struct regnode_charclass_class); |
2098 | StructCopy(data.start_class, | |
830247a4 | 2099 | (struct regnode_charclass_class*)RExC_rx->data->data[n], |
653099ff | 2100 | struct regnode_charclass_class); |
830247a4 | 2101 | r->regstclass = (regnode*)RExC_rx->data->data[n]; |
653099ff | 2102 | r->reganch &= ~ROPT_SKIP; /* Used in find_byclass(). */ |
9c5ffd7c JH |
2103 | DEBUG_r({ SV* sv = sv_newmortal(); |
2104 | regprop(sv, (regnode*)data.start_class); | |
2105 | PerlIO_printf(Perl_debug_log, | |
2106 | "synthetic stclass `%s'.\n", | |
2107 | SvPVX(sv));}); | |
653099ff | 2108 | } |
a0d0e21e LW |
2109 | } |
2110 | ||
a0d0e21e | 2111 | r->minlen = minlen; |
b81d288d | 2112 | if (RExC_seen & REG_SEEN_GPOS) |
c277df42 | 2113 | r->reganch |= ROPT_GPOS_SEEN; |
830247a4 | 2114 | if (RExC_seen & REG_SEEN_LOOKBEHIND) |
c277df42 | 2115 | r->reganch |= ROPT_LOOKBEHIND_SEEN; |
830247a4 | 2116 | if (RExC_seen & REG_SEEN_EVAL) |
ce862d02 | 2117 | r->reganch |= ROPT_EVAL_SEEN; |
f33976b4 DB |
2118 | if (RExC_seen & REG_SEEN_CANY) |
2119 | r->reganch |= ROPT_CANY_SEEN; | |
830247a4 IZ |
2120 | Newz(1002, r->startp, RExC_npar, I32); |
2121 | Newz(1002, r->endp, RExC_npar, I32); | |
ffc61ed2 | 2122 | PL_regdata = r->data; /* for regprop() */ |
a0d0e21e LW |
2123 | DEBUG_r(regdump(r)); |
2124 | return(r); | |
a687059c LW |
2125 | } |
2126 | ||
2127 | /* | |
2128 | - reg - regular expression, i.e. main body or parenthesized thing | |
2129 | * | |
2130 | * Caller must absorb opening parenthesis. | |
2131 | * | |
2132 | * Combining parenthesis handling with the base level of regular expression | |
2133 | * is a trifle forced, but the need to tie the tails of the branches to what | |
2134 | * follows makes it hard to avoid. | |
2135 | */ | |
76e3520e | 2136 | STATIC regnode * |
830247a4 | 2137 | S_reg(pTHX_ RExC_state_t *pRExC_state, I32 paren, I32 *flagp) |
c277df42 | 2138 | /* paren: Parenthesized? 0=top, 1=(, inside: changed to letter. */ |
a687059c | 2139 | { |
c277df42 IZ |
2140 | register regnode *ret; /* Will be the head of the group. */ |
2141 | register regnode *br; | |
2142 | register regnode *lastbr; | |
2143 | register regnode *ender = 0; | |
a0d0e21e | 2144 | register I32 parno = 0; |
e2509266 | 2145 | I32 flags, oregflags = RExC_flags, have_branch = 0, open = 0; |
9d1d55b5 JP |
2146 | |
2147 | /* for (?g), (?gc), and (?o) warnings; warning | |
2148 | about (?c) will warn about (?g) -- japhy */ | |
2149 | ||
2150 | I32 wastedflags = 0x00, | |
2151 | wasted_o = 0x01, | |
2152 | wasted_g = 0x02, | |
2153 | wasted_gc = 0x02 | 0x04, | |
2154 | wasted_c = 0x04; | |
2155 | ||
fac92740 | 2156 | char * parse_start = RExC_parse; /* MJD */ |
830247a4 | 2157 | char *oregcomp_parse = RExC_parse; |
c277df42 | 2158 | char c; |
a0d0e21e | 2159 | |
821b33a5 | 2160 | *flagp = 0; /* Tentatively. */ |
a0d0e21e | 2161 | |
9d1d55b5 | 2162 | |
a0d0e21e LW |
2163 | /* Make an OPEN node, if parenthesized. */ |
2164 | if (paren) { | |
fac92740 | 2165 | if (*RExC_parse == '?') { /* (?...) */ |
2b36a5a0 JH |
2166 | U32 posflags = 0, negflags = 0; |
2167 | U32 *flagsp = &posflags; | |
0f5d15d6 | 2168 | int logical = 0; |
830247a4 | 2169 | char *seqstart = RExC_parse; |
ca9dfc88 | 2170 | |
830247a4 IZ |
2171 | RExC_parse++; |
2172 | paren = *RExC_parse++; | |
c277df42 | 2173 | ret = NULL; /* For look-ahead/behind. */ |
a0d0e21e | 2174 | switch (paren) { |
fac92740 | 2175 | case '<': /* (?<...) */ |
830247a4 | 2176 | RExC_seen |= REG_SEEN_LOOKBEHIND; |
b81d288d | 2177 | if (*RExC_parse == '!') |
c277df42 | 2178 | paren = ','; |
b81d288d | 2179 | if (*RExC_parse != '=' && *RExC_parse != '!') |
c277df42 | 2180 | goto unknown; |
830247a4 | 2181 | RExC_parse++; |
fac92740 MJD |
2182 | case '=': /* (?=...) */ |
2183 | case '!': /* (?!...) */ | |
830247a4 | 2184 | RExC_seen_zerolen++; |
fac92740 MJD |
2185 | case ':': /* (?:...) */ |
2186 | case '>': /* (?>...) */ | |
a0d0e21e | 2187 | break; |
fac92740 MJD |
2188 | case '$': /* (?$...) */ |
2189 | case '@': /* (?@...) */ | |
8615cb43 | 2190 | vFAIL2("Sequence (?%c...) not implemented", (int)paren); |
a0d0e21e | 2191 | break; |
fac92740 | 2192 | case '#': /* (?#...) */ |
830247a4 IZ |
2193 | while (*RExC_parse && *RExC_parse != ')') |
2194 | RExC_parse++; | |
2195 | if (*RExC_parse != ')') | |
c277df42 | 2196 | FAIL("Sequence (?#... not terminated"); |
830247a4 | 2197 | nextchar(pRExC_state); |
a0d0e21e LW |
2198 | *flagp = TRYAGAIN; |
2199 | return NULL; | |
fac92740 | 2200 | case 'p': /* (?p...) */ |
9014280d | 2201 | if (SIZE_ONLY && ckWARN2(WARN_DEPRECATED, WARN_REGEXP)) |
f9373011 | 2202 | vWARNdep(RExC_parse, "(?p{}) is deprecated - use (??{})"); |
8c8ad484 | 2203 | /* FALL THROUGH*/ |
fac92740 | 2204 | case '?': /* (??...) */ |
0f5d15d6 | 2205 | logical = 1; |
438a3801 YST |
2206 | if (*RExC_parse != '{') |
2207 | goto unknown; | |
830247a4 | 2208 | paren = *RExC_parse++; |
0f5d15d6 | 2209 | /* FALL THROUGH */ |
fac92740 | 2210 | case '{': /* (?{...}) */ |
c277df42 | 2211 | { |
c277df42 IZ |
2212 | I32 count = 1, n = 0; |
2213 | char c; | |
830247a4 | 2214 | char *s = RExC_parse; |
c277df42 IZ |
2215 | SV *sv; |
2216 | OP_4tree *sop, *rop; | |
2217 | ||
830247a4 IZ |
2218 | RExC_seen_zerolen++; |
2219 | RExC_seen |= REG_SEEN_EVAL; | |
2220 | while (count && (c = *RExC_parse)) { | |
2221 | if (c == '\\' && RExC_parse[1]) | |
2222 | RExC_parse++; | |
b81d288d | 2223 | else if (c == '{') |
c277df42 | 2224 | count++; |
b81d288d | 2225 | else if (c == '}') |
c277df42 | 2226 | count--; |
830247a4 | 2227 | RExC_parse++; |
c277df42 | 2228 | } |
830247a4 | 2229 | if (*RExC_parse != ')') |
b45f050a | 2230 | { |
b81d288d | 2231 | RExC_parse = s; |
b45f050a JF |
2232 | vFAIL("Sequence (?{...}) not terminated or not {}-balanced"); |
2233 | } | |
c277df42 | 2234 | if (!SIZE_ONLY) { |
f3548bdc | 2235 | PAD *pad; |
b81d288d AB |
2236 | |
2237 | if (RExC_parse - 1 - s) | |
830247a4 | 2238 | sv = newSVpvn(s, RExC_parse - 1 - s); |
c277df42 | 2239 | else |
79cb57f6 | 2240 | sv = newSVpvn("", 0); |
c277df42 | 2241 | |
569233ed SB |
2242 | ENTER; |
2243 | Perl_save_re_context(aTHX); | |
f3548bdc | 2244 | rop = sv_compile_2op(sv, &sop, "re", &pad); |
9b978d73 DM |
2245 | sop->op_private |= OPpREFCOUNTED; |
2246 | /* re_dup will OpREFCNT_inc */ | |
2247 | OpREFCNT_set(sop, 1); | |
569233ed | 2248 | LEAVE; |
c277df42 | 2249 | |
830247a4 IZ |
2250 | n = add_data(pRExC_state, 3, "nop"); |
2251 | RExC_rx->data->data[n] = (void*)rop; | |
2252 | RExC_rx->data->data[n+1] = (void*)sop; | |
f3548bdc | 2253 | RExC_rx->data->data[n+2] = (void*)pad; |
c277df42 | 2254 | SvREFCNT_dec(sv); |
a0ed51b3 | 2255 | } |
e24b16f9 | 2256 | else { /* First pass */ |
830247a4 | 2257 | if (PL_reginterp_cnt < ++RExC_seen_evals |
923e4eb5 | 2258 | && IN_PERL_RUNTIME) |
2cd61cdb IZ |
2259 | /* No compiled RE interpolated, has runtime |
2260 | components ===> unsafe. */ | |
2261 | FAIL("Eval-group not allowed at runtime, use re 'eval'"); | |
5b61d3f7 | 2262 | if (PL_tainting && PL_tainted) |
cc6b7395 | 2263 | FAIL("Eval-group in insecure regular expression"); |
923e4eb5 | 2264 | if (IN_PERL_COMPILETIME) |
b5c19bd7 | 2265 | PL_cv_has_eval = 1; |
c277df42 | 2266 | } |
b5c19bd7 | 2267 | |
830247a4 | 2268 | nextchar(pRExC_state); |
0f5d15d6 | 2269 | if (logical) { |
830247a4 | 2270 | ret = reg_node(pRExC_state, LOGICAL); |
0f5d15d6 IZ |
2271 | if (!SIZE_ONLY) |
2272 | ret->flags = 2; | |
830247a4 | 2273 | regtail(pRExC_state, ret, reganode(pRExC_state, EVAL, n)); |
fac92740 | 2274 | /* deal with the length of this later - MJD */ |
0f5d15d6 IZ |
2275 | return ret; |
2276 | } | |
ccb2c380 MP |
2277 | ret = reganode(pRExC_state, EVAL, n); |
2278 | Set_Node_Length(ret, RExC_parse - parse_start + 1); | |
2279 | Set_Node_Offset(ret, parse_start); | |
2280 | return ret; | |
c277df42 | 2281 | } |
fac92740 | 2282 | case '(': /* (?(?{...})...) and (?(?=...)...) */ |
c277df42 | 2283 | { |
fac92740 | 2284 | if (RExC_parse[0] == '?') { /* (?(?...)) */ |
b81d288d AB |
2285 | if (RExC_parse[1] == '=' || RExC_parse[1] == '!' |
2286 | || RExC_parse[1] == '<' | |
830247a4 | 2287 | || RExC_parse[1] == '{') { /* Lookahead or eval. */ |
c277df42 IZ |
2288 | I32 flag; |
2289 | ||
830247a4 | 2290 | ret = reg_node(pRExC_state, LOGICAL); |
0f5d15d6 IZ |
2291 | if (!SIZE_ONLY) |
2292 | ret->flags = 1; | |
830247a4 | 2293 | regtail(pRExC_state, ret, reg(pRExC_state, 1, &flag)); |
c277df42 | 2294 | goto insert_if; |
b81d288d | 2295 | } |
a0ed51b3 | 2296 | } |
830247a4 | 2297 | else if (RExC_parse[0] >= '1' && RExC_parse[0] <= '9' ) { |
fac92740 | 2298 | /* (?(1)...) */ |
830247a4 | 2299 | parno = atoi(RExC_parse++); |
c277df42 | 2300 | |
830247a4 IZ |
2301 | while (isDIGIT(*RExC_parse)) |
2302 | RExC_parse++; | |
fac92740 MJD |
2303 | ret = reganode(pRExC_state, GROUPP, parno); |
2304 | ||
830247a4 | 2305 | if ((c = *nextchar(pRExC_state)) != ')') |
b45f050a | 2306 | vFAIL("Switch condition not recognized"); |
c277df42 | 2307 | insert_if: |
830247a4 IZ |
2308 | regtail(pRExC_state, ret, reganode(pRExC_state, IFTHEN, 0)); |
2309 | br = regbranch(pRExC_state, &flags, 1); | |
c277df42 | 2310 | if (br == NULL) |
830247a4 | 2311 | br = reganode(pRExC_state, LONGJMP, 0); |
c277df42 | 2312 | else |
830247a4 IZ |
2313 | regtail(pRExC_state, br, reganode(pRExC_state, LONGJMP, 0)); |
2314 | c = *nextchar(pRExC_state); | |
d1b80229 IZ |
2315 | if (flags&HASWIDTH) |
2316 | *flagp |= HASWIDTH; | |
c277df42 | 2317 | if (c == '|') { |
830247a4 IZ |
2318 | lastbr = reganode(pRExC_state, IFTHEN, 0); /* Fake one for optimizer. */ |
2319 | regbranch(pRExC_state, &flags, 1); | |
2320 | regtail(pRExC_state, ret, lastbr); | |
d1b80229 IZ |
2321 | if (flags&HASWIDTH) |
2322 | *flagp |= HASWIDTH; | |
830247a4 | 2323 | c = *nextchar(pRExC_state); |
a0ed51b3 LW |
2324 | } |
2325 | else | |
c277df42 IZ |
2326 | lastbr = NULL; |
2327 | if (c != ')') | |
8615cb43 | 2328 | vFAIL("Switch (?(condition)... contains too many branches"); |
830247a4 IZ |
2329 | ender = reg_node(pRExC_state, TAIL); |
2330 | regtail(pRExC_state, br, ender); | |
c277df42 | 2331 | if (lastbr) { |
830247a4 IZ |
2332 | regtail(pRExC_state, lastbr, ender); |
2333 | regtail(pRExC_state, NEXTOPER(NEXTOPER(lastbr)), ender); | |
a0ed51b3 LW |
2334 | } |
2335 | else | |
830247a4 | 2336 | regtail(pRExC_state, ret, ender); |
c277df42 | 2337 | return ret; |
a0ed51b3 LW |
2338 | } |
2339 | else { | |
830247a4 | 2340 | vFAIL2("Unknown switch condition (?(%.2s", RExC_parse); |
c277df42 IZ |
2341 | } |
2342 | } | |
1b1626e4 | 2343 | case 0: |
830247a4 | 2344 | RExC_parse--; /* for vFAIL to print correctly */ |
8615cb43 | 2345 | vFAIL("Sequence (? incomplete"); |
1b1626e4 | 2346 | break; |
a0d0e21e | 2347 | default: |
830247a4 | 2348 | --RExC_parse; |
fac92740 | 2349 | parse_flags: /* (?i) */ |
830247a4 | 2350 | while (*RExC_parse && strchr("iogcmsx", *RExC_parse)) { |
9d1d55b5 JP |
2351 | /* (?g), (?gc) and (?o) are useless here |
2352 | and must be globally applied -- japhy */ | |
2353 | ||
2354 | if (*RExC_parse == 'o' || *RExC_parse == 'g') { | |
2355 | if (SIZE_ONLY && ckWARN(WARN_REGEXP)) { | |
2356 | I32 wflagbit = *RExC_parse == 'o' ? wasted_o : wasted_g; | |
2357 | if (! (wastedflags & wflagbit) ) { | |
2358 | wastedflags |= wflagbit; | |
2359 | vWARN5( | |
2360 | RExC_parse + 1, | |
2361 | "Useless (%s%c) - %suse /%c modifier", | |
2362 | flagsp == &negflags ? "?-" : "?", | |
2363 | *RExC_parse, | |
2364 | flagsp == &negflags ? "don't " : "", | |
2365 | *RExC_parse | |
2366 | ); | |
2367 | } | |
2368 | } | |
2369 | } | |
2370 | else if (*RExC_parse == 'c') { | |
2371 | if (SIZE_ONLY && ckWARN(WARN_REGEXP)) { | |
2372 | if (! (wastedflags & wasted_c) ) { | |
2373 | wastedflags |= wasted_gc; | |
2374 | vWARN3( | |
2375 | RExC_parse + 1, | |
2376 | "Useless (%sc) - %suse /gc modifier", | |
2377 | flagsp == &negflags ? "?-" : "?", | |
2378 | flagsp == &negflags ? "don't " : "" | |
2379 | ); | |
2380 | } | |
2381 | } | |
2382 | } | |
2383 | else { pmflag(flagsp, *RExC_parse); } | |
2384 | ||
830247a4 | 2385 | ++RExC_parse; |
ca9dfc88 | 2386 | } |
830247a4 | 2387 | if (*RExC_parse == '-') { |
ca9dfc88 | 2388 | flagsp = &negflags; |
9d1d55b5 | 2389 | wastedflags = 0; /* reset so (?g-c) warns twice */ |
830247a4 | 2390 | ++RExC_parse; |
ca9dfc88 | 2391 | goto parse_flags; |
48c036b1 | 2392 | } |
e2509266 JH |
2393 | RExC_flags |= posflags; |
2394 | RExC_flags &= ~negflags; | |
830247a4 IZ |
2395 | if (*RExC_parse == ':') { |
2396 | RExC_parse++; | |
ca9dfc88 IZ |
2397 | paren = ':'; |
2398 | break; | |
2399 | } | |
c277df42 | 2400 | unknown: |
830247a4 IZ |
2401 | if (*RExC_parse != ')') { |
2402 | RExC_parse++; | |
2403 | vFAIL3("Sequence (%.*s...) not recognized", RExC_parse-seqstart, seqstart); | |
b45f050a | 2404 | } |
830247a4 | 2405 | nextchar(pRExC_state); |
a0d0e21e LW |
2406 | *flagp = TRYAGAIN; |
2407 | return NULL; | |
2408 | } | |
2409 | } | |
fac92740 | 2410 | else { /* (...) */ |
830247a4 IZ |
2411 | parno = RExC_npar; |
2412 | RExC_npar++; | |
2413 | ret = reganode(pRExC_state, OPEN, parno); | |
fac92740 MJD |
2414 | Set_Node_Length(ret, 1); /* MJD */ |
2415 | Set_Node_Offset(ret, RExC_parse); /* MJD */ | |
c277df42 | 2416 | open = 1; |
a0d0e21e | 2417 | } |
a0ed51b3 | 2418 | } |
fac92740 | 2419 | else /* ! paren */ |
a0d0e21e LW |
2420 | ret = NULL; |
2421 | ||
2422 | /* Pick up the branches, linking them together. */ | |
fac92740 | 2423 | parse_start = RExC_parse; /* MJD */ |
830247a4 | 2424 | br = regbranch(pRExC_state, &flags, 1); |
fac92740 MJD |
2425 | /* branch_len = (paren != 0); */ |
2426 | ||
a0d0e21e LW |
2427 | if (br == NULL) |
2428 | return(NULL); | |
830247a4 IZ |
2429 | if (*RExC_parse == '|') { |
2430 | if (!SIZE_ONLY && RExC_extralen) { | |
2431 | reginsert(pRExC_state, BRANCHJ, br); | |
a0ed51b3 | 2432 | } |
fac92740 | 2433 | else { /* MJD */ |
830247a4 | 2434 | reginsert(pRExC_state, BRANCH, br); |
fac92740 MJD |
2435 | Set_Node_Length(br, paren != 0); |
2436 | Set_Node_Offset_To_R(br-RExC_emit_start, parse_start-RExC_start); | |
2437 | } | |
c277df42 IZ |
2438 | have_branch = 1; |
2439 | if (SIZE_ONLY) | |
830247a4 | 2440 | RExC_extralen += 1; /* For BRANCHJ-BRANCH. */ |
a0ed51b3 LW |
2441 | } |
2442 | else if (paren == ':') { | |
c277df42 IZ |
2443 | *flagp |= flags&SIMPLE; |
2444 | } | |
2445 | if (open) { /* Starts with OPEN. */ | |
830247a4 | 2446 | regtail(pRExC_state, ret, br); /* OPEN -> first. */ |
a0ed51b3 LW |
2447 | } |
2448 | else if (paren != '?') /* Not Conditional */ | |
a0d0e21e | 2449 | ret = br; |
32a0ca98 | 2450 | *flagp |= flags & (SPSTART | HASWIDTH); |
c277df42 | 2451 | lastbr = br; |
830247a4 IZ |
2452 | while (*RExC_parse == '|') { |
2453 | if (!SIZE_ONLY && RExC_extralen) { | |
2454 | ender = reganode(pRExC_state, LONGJMP,0); | |
2455 | regtail(pRExC_state, NEXTOPER(NEXTOPER(lastbr)), ender); /* Append to the previous. */ | |
c277df42 IZ |
2456 | } |
2457 | if (SIZE_ONLY) | |
830247a4 IZ |
2458 | RExC_extralen += 2; /* Account for LONGJMP. */ |
2459 | nextchar(pRExC_state); | |
2460 | br = regbranch(pRExC_state, &flags, 0); | |
fac92740 | 2461 | |
a687059c | 2462 | if (br == NULL) |
a0d0e21e | 2463 | return(NULL); |
830247a4 | 2464 | regtail(pRExC_state, lastbr, br); /* BRANCH -> BRANCH. */ |
c277df42 | 2465 | lastbr = br; |
821b33a5 IZ |
2466 | if (flags&HASWIDTH) |
2467 | *flagp |= HASWIDTH; | |
a687059c | 2468 | *flagp |= flags&SPSTART; |
a0d0e21e LW |
2469 | } |
2470 | ||
c277df42 IZ |
2471 | if (have_branch || paren != ':') { |
2472 | /* Make a closing node, and hook it on the end. */ | |
2473 | switch (paren) { | |
2474 | case ':': | |
830247a4 | 2475 | ender = reg_node(pRExC_state, TAIL); |
c277df42 IZ |
2476 | break; |
2477 | case 1: | |
830247a4 | 2478 | ender = reganode(pRExC_state, CLOSE, parno); |
fac92740 MJD |
2479 | Set_Node_Offset(ender,RExC_parse+1); /* MJD */ |
2480 | Set_Node_Length(ender,1); /* MJD */ | |
c277df42 IZ |
2481 | break; |
2482 | case '<': | |
c277df42 IZ |
2483 | case ',': |
2484 | case '=': | |
2485 | case '!': | |
c277df42 | 2486 | *flagp &= ~HASWIDTH; |
821b33a5 IZ |
2487 | /* FALL THROUGH */ |
2488 | case '>': | |
830247a4 | 2489 | ender = reg_node(pRExC_state, SUCCEED); |
c277df42 IZ |
2490 | break; |
2491 | case 0: | |
830247a4 | 2492 | ender = reg_node(pRExC_state, END); |
c277df42 IZ |
2493 | break; |
2494 | } | |
830247a4 | 2495 | regtail(pRExC_state, lastbr, ender); |
a0d0e21e | 2496 | |
c277df42 IZ |
2497 | if (have_branch) { |
2498 | /* Hook the tails of the branches to the closing node. */ | |
2499 | for (br = ret; br != NULL; br = regnext(br)) { | |
830247a4 | 2500 | regoptail(pRExC_state, br, ender); |
c277df42 IZ |
2501 | } |
2502 | } | |
a0d0e21e | 2503 | } |
c277df42 IZ |
2504 | |
2505 | { | |
2506 | char *p; | |
2507 | static char parens[] = "=!<,>"; | |
2508 | ||
2509 | if (paren && (p = strchr(parens, paren))) { | |
eb160463 | 2510 | U8 node = ((p - parens) % 2) ? UNLESSM : IFMATCH; |
c277df42 IZ |
2511 | int flag = (p - parens) > 1; |
2512 | ||
2513 | if (paren == '>') | |
2514 | node = SUSPEND, flag = 0; | |
830247a4 | 2515 | reginsert(pRExC_state, node,ret); |
45948336 EP |
2516 | Set_Node_Cur_Length(ret); |
2517 | Set_Node_Offset(ret, parse_start + 1); | |
c277df42 | 2518 | ret->flags = flag; |
830247a4 | 2519 | regtail(pRExC_state, ret, reg_node(pRExC_state, TAIL)); |
c277df42 | 2520 | } |
a0d0e21e LW |
2521 | } |
2522 | ||
2523 | /* Check for proper termination. */ | |
ce3e6498 | 2524 | if (paren) { |
e2509266 | 2525 | RExC_flags = oregflags; |
830247a4 IZ |
2526 | if (RExC_parse >= RExC_end || *nextchar(pRExC_state) != ')') { |
2527 | RExC_parse = oregcomp_parse; | |
380a0633 | 2528 | vFAIL("Unmatched ("); |
ce3e6498 | 2529 | } |
a0ed51b3 | 2530 | } |
830247a4 IZ |
2531 | else if (!paren && RExC_parse < RExC_end) { |
2532 | if (*RExC_parse == ')') { | |
2533 | RExC_parse++; | |
380a0633 | 2534 | vFAIL("Unmatched )"); |
a0ed51b3 LW |
2535 | } |
2536 | else | |
b45f050a | 2537 | FAIL("Junk on end of regexp"); /* "Can't happen". */ |
a0d0e21e LW |
2538 | /* NOTREACHED */ |
2539 | } | |
a687059c | 2540 | |
a0d0e21e | 2541 | return(ret); |
a687059c LW |
2542 | } |
2543 | ||
2544 | /* | |
2545 | - regbranch - one alternative of an | operator | |
2546 | * | |
2547 | * Implements the concatenation operator. | |
2548 | */ | |
76e3520e | 2549 | STATIC regnode * |
830247a4 | 2550 | S_regbranch(pTHX_ RExC_state_t *pRExC_state, I32 *flagp, I32 first) |
a687059c | 2551 | { |
c277df42 IZ |
2552 | register regnode *ret; |
2553 | register regnode *chain = NULL; | |
2554 | register regnode *latest; | |
2555 | I32 flags = 0, c = 0; | |
a0d0e21e | 2556 | |
b81d288d | 2557 | if (first) |
c277df42 IZ |
2558 | ret = NULL; |
2559 | else { | |
b81d288d | 2560 | if (!SIZE_ONLY && RExC_extralen) |
830247a4 | 2561 | ret = reganode(pRExC_state, BRANCHJ,0); |
fac92740 | 2562 | else { |
830247a4 | 2563 | ret = reg_node(pRExC_state, BRANCH); |
fac92740 MJD |
2564 | Set_Node_Length(ret, 1); |
2565 | } | |
c277df42 IZ |
2566 | } |
2567 | ||
b81d288d | 2568 | if (!first && SIZE_ONLY) |
830247a4 | 2569 | RExC_extralen += 1; /* BRANCHJ */ |
b81d288d | 2570 | |
c277df42 | 2571 | *flagp = WORST; /* Tentatively. */ |
a0d0e21e | 2572 | |
830247a4 IZ |
2573 | RExC_parse--; |
2574 | nextchar(pRExC_state); | |
2575 | while (RExC_parse < RExC_end && *RExC_parse != '|' && *RExC_parse != ')') { | |
a0d0e21e | 2576 | flags &= ~TRYAGAIN; |
830247a4 | 2577 | latest = regpiece(pRExC_state, &flags); |
a0d0e21e LW |
2578 | if (latest == NULL) { |
2579 | if (flags & TRYAGAIN) | |
2580 | continue; | |
2581 | return(NULL); | |
a0ed51b3 LW |
2582 | } |
2583 | else if (ret == NULL) | |
c277df42 | 2584 | ret = latest; |
a0d0e21e | 2585 | *flagp |= flags&HASWIDTH; |
c277df42 | 2586 | if (chain == NULL) /* First piece. */ |
a0d0e21e LW |
2587 | *flagp |= flags&SPSTART; |
2588 | else { | |
830247a4 IZ |
2589 | RExC_naughty++; |
2590 | regtail(pRExC_state, chain, latest); | |
a687059c | 2591 | } |
a0d0e21e | 2592 | chain = latest; |
c277df42 IZ |
2593 | c++; |
2594 | } | |
2595 | if (chain == NULL) { /* Loop ran zero times. */ | |
830247a4 | 2596 | chain = reg_node(pRExC_state, NOTHING); |
c277df42 IZ |
2597 | if (ret == NULL) |
2598 | ret = chain; | |
2599 | } | |
2600 | if (c == 1) { | |
2601 | *flagp |= flags&SIMPLE; | |
a0d0e21e | 2602 | } |
a687059c | 2603 | |
a0d0e21e | 2604 | return(ret); |
a687059c LW |
2605 | } |
2606 | ||
2607 | /* | |
2608 | - regpiece - something followed by possible [*+?] | |
2609 | * | |
2610 | * Note that the branching code sequences used for ? and the general cases | |
2611 | * of * and + are somewhat optimized: they use the same NOTHING node as | |
2612 | * both the endmarker for their branch list and the body of the last branch. | |
2613 | * It might seem that this node could be dispensed with entirely, but the | |
2614 | * endmarker role is not redundant. | |
2615 | */ | |
76e3520e | 2616 | STATIC regnode * |
830247a4 | 2617 | S_regpiece(pTHX_ RExC_state_t *pRExC_state, I32 *flagp) |
a687059c | 2618 | { |
c277df42 | 2619 | register regnode *ret; |
a0d0e21e LW |
2620 | register char op; |
2621 | register char *next; | |
2622 | I32 flags; | |
830247a4 | 2623 | char *origparse = RExC_parse; |
a0d0e21e LW |
2624 | char *maxpos; |
2625 | I32 min; | |
c277df42 | 2626 | I32 max = REG_INFTY; |
fac92740 | 2627 | char *parse_start; |
a0d0e21e | 2628 | |
830247a4 | 2629 | ret = regatom(pRExC_state, &flags); |
a0d0e21e LW |
2630 | if (ret == NULL) { |
2631 | if (flags & TRYAGAIN) | |
2632 | *flagp |= TRYAGAIN; | |
2633 | return(NULL); | |
2634 | } | |
2635 | ||
830247a4 | 2636 | op = *RExC_parse; |
a0d0e21e | 2637 | |
830247a4 | 2638 | if (op == '{' && regcurly(RExC_parse)) { |
fac92740 | 2639 | parse_start = RExC_parse; /* MJD */ |
830247a4 | 2640 | next = RExC_parse + 1; |
a0d0e21e LW |
2641 | maxpos = Nullch; |
2642 | while (isDIGIT(*next) || *next == ',') { | |
2643 | if (*next == ',') { | |
2644 | if (maxpos) | |
2645 | break; | |
2646 | else | |
2647 | maxpos = next; | |
a687059c | 2648 | } |
a0d0e21e LW |
2649 | next++; |
2650 | } | |
2651 | if (*next == '}') { /* got one */ | |
2652 | if (!maxpos) | |
2653 | maxpos = next; | |
830247a4 IZ |
2654 | RExC_parse++; |
2655 | min = atoi(RExC_parse); | |
a0d0e21e LW |
2656 | if (*maxpos == ',') |
2657 | maxpos++; | |
2658 | else | |
830247a4 | 2659 | maxpos = RExC_parse; |
a0d0e21e LW |
2660 | max = atoi(maxpos); |
2661 | if (!max && *maxpos != '0') | |
c277df42 IZ |
2662 | max = REG_INFTY; /* meaning "infinity" */ |
2663 | else if (max >= REG_INFTY) | |
8615cb43 | 2664 | vFAIL2("Quantifier in {,} bigger than %d", REG_INFTY - 1); |
830247a4 IZ |
2665 | RExC_parse = next; |
2666 | nextchar(pRExC_state); | |
a0d0e21e LW |
2667 | |
2668 | do_curly: | |
2669 | if ((flags&SIMPLE)) { | |
830247a4 IZ |
2670 | RExC_naughty += 2 + RExC_naughty / 2; |
2671 | reginsert(pRExC_state, CURLY, ret); | |
fac92740 MJD |
2672 | Set_Node_Offset(ret, parse_start+1); /* MJD */ |
2673 | Set_Node_Cur_Length(ret); | |
a0d0e21e LW |
2674 | } |
2675 | else { | |
830247a4 | 2676 | regnode *w = reg_node(pRExC_state, WHILEM); |
2c2d71f5 JH |
2677 | |
2678 | w->flags = 0; | |
830247a4 IZ |
2679 | regtail(pRExC_state, ret, w); |
2680 | if (!SIZE_ONLY && RExC_extralen) { | |
2681 | reginsert(pRExC_state, LONGJMP,ret); | |
2682 | reginsert(pRExC_state, NOTHING,ret); | |
c277df42 IZ |
2683 | NEXT_OFF(ret) = 3; /* Go over LONGJMP. */ |
2684 | } | |
830247a4 | 2685 | reginsert(pRExC_state, CURLYX,ret); |
fac92740 MJD |
2686 | /* MJD hk */ |
2687 | Set_Node_Offset(ret, parse_start+1); | |
2688 | Set_Node_Length(ret, | |
2689 | op == '{' ? (RExC_parse - parse_start) : 1); | |
2690 | ||
830247a4 | 2691 | if (!SIZE_ONLY && RExC_extralen) |
c277df42 | 2692 | NEXT_OFF(ret) = 3; /* Go over NOTHING to LONGJMP. */ |
830247a4 | 2693 | regtail(pRExC_state, ret, reg_node(pRExC_state, NOTHING)); |
c277df42 | 2694 | if (SIZE_ONLY) |
830247a4 IZ |
2695 | RExC_whilem_seen++, RExC_extralen += 3; |
2696 | RExC_naughty += 4 + RExC_naughty; /* compound interest */ | |
a0d0e21e | 2697 | } |
c277df42 | 2698 | ret->flags = 0; |
a0d0e21e LW |
2699 | |
2700 | if (min > 0) | |
821b33a5 IZ |
2701 | *flagp = WORST; |
2702 | if (max > 0) | |
2703 | *flagp |= HASWIDTH; | |
a0d0e21e | 2704 | if (max && max < min) |
8615cb43 | 2705 | vFAIL("Can't do {n,m} with n > m"); |
c277df42 | 2706 | if (!SIZE_ONLY) { |
eb160463 GS |
2707 | ARG1_SET(ret, (U16)min); |
2708 | ARG2_SET(ret, (U16)max); | |
a687059c | 2709 | } |
a687059c | 2710 | |
a0d0e21e | 2711 | goto nest_check; |
a687059c | 2712 | } |
a0d0e21e | 2713 | } |
a687059c | 2714 | |
a0d0e21e LW |
2715 | if (!ISMULT1(op)) { |
2716 | *flagp = flags; | |
a687059c | 2717 | return(ret); |
a0d0e21e | 2718 | } |
bb20fd44 | 2719 | |
c277df42 | 2720 | #if 0 /* Now runtime fix should be reliable. */ |
b45f050a JF |
2721 | |
2722 | /* if this is reinstated, don't forget to put this back into perldiag: | |
2723 | ||
2724 | =item Regexp *+ operand could be empty at {#} in regex m/%s/ | |
2725 | ||
2726 | (F) The part of the regexp subject to either the * or + quantifier | |
2727 | could match an empty string. The {#} shows in the regular | |
2728 | expression about where the problem was discovered. | |
2729 | ||
2730 | */ | |
2731 | ||
bb20fd44 | 2732 | if (!(flags&HASWIDTH) && op != '?') |
b45f050a | 2733 | vFAIL("Regexp *+ operand could be empty"); |
b81d288d | 2734 | #endif |
bb20fd44 | 2735 | |
fac92740 | 2736 | parse_start = RExC_parse; |
830247a4 | 2737 | nextchar(pRExC_state); |
a0d0e21e | 2738 | |
821b33a5 | 2739 | *flagp = (op != '+') ? (WORST|SPSTART|HASWIDTH) : (WORST|HASWIDTH); |
a0d0e21e LW |
2740 | |
2741 | if (op == '*' && (flags&SIMPLE)) { | |
830247a4 | 2742 | reginsert(pRExC_state, STAR, ret); |
c277df42 | 2743 | ret->flags = 0; |
830247a4 | 2744 | RExC_naughty += 4; |
a0d0e21e LW |
2745 | } |
2746 | else if (op == '*') { | |
2747 | min = 0; | |
2748 | goto do_curly; | |
a0ed51b3 LW |
2749 | } |
2750 | else if (op == '+' && (flags&SIMPLE)) { | |
830247a4 | 2751 | reginsert(pRExC_state, PLUS, ret); |
c277df42 | 2752 | ret->flags = 0; |
830247a4 | 2753 | RExC_naughty += 3; |
a0d0e21e LW |
2754 | } |
2755 | else if (op == '+') { | |
2756 | min = 1; | |
2757 | goto do_curly; | |
a0ed51b3 LW |
2758 | } |
2759 | else if (op == '?') { | |
a0d0e21e LW |
2760 | min = 0; max = 1; |
2761 | goto do_curly; | |
2762 | } | |
2763 | nest_check: | |
e476b1b5 | 2764 | if (ckWARN(WARN_REGEXP) && !SIZE_ONLY && !(flags&HASWIDTH) && max > REG_INFTY/3) { |
830247a4 | 2765 | vWARN3(RExC_parse, |
b45f050a | 2766 | "%.*s matches null string many times", |
830247a4 | 2767 | RExC_parse - origparse, |
b45f050a | 2768 | origparse); |
a0d0e21e LW |
2769 | } |
2770 | ||
830247a4 IZ |
2771 | if (*RExC_parse == '?') { |
2772 | nextchar(pRExC_state); | |
2773 | reginsert(pRExC_state, MINMOD, ret); | |
2774 | regtail(pRExC_state, ret, ret + NODE_STEP_REGNODE); | |
a0d0e21e | 2775 | } |
830247a4 IZ |
2776 | if (ISMULT2(RExC_parse)) { |
2777 | RExC_parse++; | |
b45f050a JF |
2778 | vFAIL("Nested quantifiers"); |
2779 | } | |
a0d0e21e LW |
2780 | |
2781 | return(ret); | |
a687059c LW |
2782 | } |
2783 | ||
2784 | /* | |
2785 | - regatom - the lowest level | |
2786 | * | |
2787 | * Optimization: gobbles an entire sequence of ordinary characters so that | |
2788 | * it can turn them into a single node, which is smaller to store and | |
2789 | * faster to run. Backslashed characters are exceptions, each becoming a | |
2790 | * separate node; the code is simpler that way and it's not worth fixing. | |
2791 | * | |
b45f050a | 2792 | * [Yes, it is worth fixing, some scripts can run twice the speed.] */ |
76e3520e | 2793 | STATIC regnode * |
830247a4 | 2794 | S_regatom(pTHX_ RExC_state_t *pRExC_state, I32 *flagp) |
a687059c | 2795 | { |
c277df42 | 2796 | register regnode *ret = 0; |
a0d0e21e | 2797 | I32 flags; |
45948336 | 2798 | char *parse_start = RExC_parse; |
a0d0e21e LW |
2799 | |
2800 | *flagp = WORST; /* Tentatively. */ | |
2801 | ||
2802 | tryagain: | |
830247a4 | 2803 | switch (*RExC_parse) { |
a0d0e21e | 2804 | case '^': |
830247a4 IZ |
2805 | RExC_seen_zerolen++; |
2806 | nextchar(pRExC_state); | |
e2509266 | 2807 | if (RExC_flags & PMf_MULTILINE) |
830247a4 | 2808 | ret = reg_node(pRExC_state, MBOL); |
e2509266 | 2809 | else if (RExC_flags & PMf_SINGLELINE) |
830247a4 | 2810 | ret = reg_node(pRExC_state, SBOL); |
a0d0e21e | 2811 | else |
830247a4 | 2812 | ret = reg_node(pRExC_state, BOL); |
fac92740 | 2813 | Set_Node_Length(ret, 1); /* MJD */ |
a0d0e21e LW |
2814 | break; |
2815 | case '$': | |
830247a4 | 2816 | nextchar(pRExC_state); |
b81d288d | 2817 | if (*RExC_parse) |
830247a4 | 2818 | RExC_seen_zerolen++; |
e2509266 | 2819 | if (RExC_flags & PMf_MULTILINE) |
830247a4 | 2820 | ret = reg_node(pRExC_state, MEOL); |
e2509266 | 2821 | else if (RExC_flags & PMf_SINGLELINE) |
830247a4 | 2822 | ret = reg_node(pRExC_state, SEOL); |
a0d0e21e | 2823 | else |
830247a4 | 2824 | ret = reg_node(pRExC_state, EOL); |
fac92740 | 2825 | Set_Node_Length(ret, 1); /* MJD */ |
a0d0e21e LW |
2826 | break; |
2827 | case '.': | |
830247a4 | 2828 | nextchar(pRExC_state); |
e2509266 | 2829 | if (RExC_flags & PMf_SINGLELINE) |
ffc61ed2 JH |
2830 | ret = reg_node(pRExC_state, SANY); |
2831 | else | |
2832 | ret = reg_node(pRExC_state, REG_ANY); | |
2833 | *flagp |= HASWIDTH|SIMPLE; | |
830247a4 | 2834 | RExC_naughty++; |
fac92740 | 2835 | Set_Node_Length(ret, 1); /* MJD */ |
a0d0e21e LW |
2836 | break; |
2837 | case '[': | |
b45f050a | 2838 | { |
830247a4 | 2839 | char *oregcomp_parse = ++RExC_parse; |
ffc61ed2 | 2840 | ret = regclass(pRExC_state); |
830247a4 IZ |
2841 | if (*RExC_parse != ']') { |
2842 | RExC_parse = oregcomp_parse; | |
b45f050a JF |
2843 | vFAIL("Unmatched ["); |
2844 | } | |
830247a4 | 2845 | nextchar(pRExC_state); |
a0d0e21e | 2846 | *flagp |= HASWIDTH|SIMPLE; |
fac92740 | 2847 | Set_Node_Length(ret, RExC_parse - oregcomp_parse + 1); /* MJD */ |
a0d0e21e | 2848 | break; |
b45f050a | 2849 | } |
a0d0e21e | 2850 | case '(': |
830247a4 IZ |
2851 | nextchar(pRExC_state); |
2852 | ret = reg(pRExC_state, 1, &flags); | |
a0d0e21e | 2853 | if (ret == NULL) { |
bf93d4cc | 2854 | if (flags & TRYAGAIN) { |
830247a4 | 2855 | if (RExC_parse == RExC_end) { |
bf93d4cc GS |
2856 | /* Make parent create an empty node if needed. */ |
2857 | *flagp |= TRYAGAIN; | |
2858 | return(NULL); | |
2859 | } | |
a0d0e21e | 2860 | goto tryagain; |
bf93d4cc | 2861 | } |
a0d0e21e LW |
2862 | return(NULL); |
2863 | } | |
c277df42 | 2864 | *flagp |= flags&(HASWIDTH|SPSTART|SIMPLE); |
a0d0e21e LW |
2865 | break; |
2866 | case '|': | |
2867 | case ')': | |
2868 | if (flags & TRYAGAIN) { | |
2869 | *flagp |= TRYAGAIN; | |
2870 | return NULL; | |
2871 | } | |
b45f050a | 2872 | vFAIL("Internal urp"); |
a0d0e21e LW |
2873 | /* Supposed to be caught earlier. */ |
2874 | break; | |
85afd4ae | 2875 | case '{': |
830247a4 IZ |
2876 | if (!regcurly(RExC_parse)) { |
2877 | RExC_parse++; | |
85afd4ae CS |
2878 | goto defchar; |
2879 | } | |
2880 | /* FALL THROUGH */ | |
a0d0e21e LW |
2881 | case '?': |
2882 | case '+': | |
2883 | case '*': | |
830247a4 | 2884 | RExC_parse++; |
b45f050a | 2885 | vFAIL("Quantifier follows nothing"); |
a0d0e21e LW |
2886 | break; |
2887 | case '\\': | |
830247a4 | 2888 | switch (*++RExC_parse) { |
a0d0e21e | 2889 | case 'A': |
830247a4 IZ |
2890 | RExC_seen_zerolen++; |
2891 | ret = reg_node(pRExC_state, SBOL); | |
a0d0e21e | 2892 | *flagp |= SIMPLE; |
830247a4 | 2893 | nextchar(pRExC_state); |
fac92740 | 2894 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2895 | break; |
2896 | case 'G': | |
830247a4 IZ |
2897 | ret = reg_node(pRExC_state, GPOS); |
2898 | RExC_seen |= REG_SEEN_GPOS; | |
a0d0e21e | 2899 | *flagp |= SIMPLE; |
830247a4 | 2900 | nextchar(pRExC_state); |
fac92740 | 2901 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2902 | break; |
2903 | case 'Z': | |
830247a4 | 2904 | ret = reg_node(pRExC_state, SEOL); |
a0d0e21e | 2905 | *flagp |= SIMPLE; |
a1917ab9 | 2906 | RExC_seen_zerolen++; /* Do not optimize RE away */ |
830247a4 | 2907 | nextchar(pRExC_state); |
a0d0e21e | 2908 | break; |
b85d18e9 | 2909 | case 'z': |
830247a4 | 2910 | ret = reg_node(pRExC_state, EOS); |
b85d18e9 | 2911 | *flagp |= SIMPLE; |
830247a4 IZ |
2912 | RExC_seen_zerolen++; /* Do not optimize RE away */ |
2913 | nextchar(pRExC_state); | |
fac92740 | 2914 | Set_Node_Length(ret, 2); /* MJD */ |
b85d18e9 | 2915 | break; |
4a2d328f | 2916 | case 'C': |
f33976b4 DB |
2917 | ret = reg_node(pRExC_state, CANY); |
2918 | RExC_seen |= REG_SEEN_CANY; | |
a0ed51b3 | 2919 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2920 | nextchar(pRExC_state); |
fac92740 | 2921 | Set_Node_Length(ret, 2); /* MJD */ |
a0ed51b3 LW |
2922 | break; |
2923 | case 'X': | |
830247a4 | 2924 | ret = reg_node(pRExC_state, CLUMP); |
a0ed51b3 | 2925 | *flagp |= HASWIDTH; |
830247a4 | 2926 | nextchar(pRExC_state); |
fac92740 | 2927 | Set_Node_Length(ret, 2); /* MJD */ |
a0ed51b3 | 2928 | break; |
a0d0e21e | 2929 | case 'w': |
eb160463 | 2930 | ret = reg_node(pRExC_state, (U8)(LOC ? ALNUML : ALNUM)); |
a0d0e21e | 2931 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2932 | nextchar(pRExC_state); |
fac92740 | 2933 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2934 | break; |
2935 | case 'W': | |
eb160463 | 2936 | ret = reg_node(pRExC_state, (U8)(LOC ? NALNUML : NALNUM)); |
a0d0e21e | 2937 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2938 | nextchar(pRExC_state); |
fac92740 | 2939 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2940 | break; |
2941 | case 'b': | |
830247a4 IZ |
2942 | RExC_seen_zerolen++; |
2943 | RExC_seen |= REG_SEEN_LOOKBEHIND; | |
eb160463 | 2944 | ret = reg_node(pRExC_state, (U8)(LOC ? BOUNDL : BOUND)); |
a0d0e21e | 2945 | *flagp |= SIMPLE; |
830247a4 | 2946 | nextchar(pRExC_state); |
fac92740 | 2947 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2948 | break; |
2949 | case 'B': | |
830247a4 IZ |
2950 | RExC_seen_zerolen++; |
2951 | RExC_seen |= REG_SEEN_LOOKBEHIND; | |
eb160463 | 2952 | ret = reg_node(pRExC_state, (U8)(LOC ? NBOUNDL : NBOUND)); |
a0d0e21e | 2953 | *flagp |= SIMPLE; |
830247a4 | 2954 | nextchar(pRExC_state); |
fac92740 | 2955 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2956 | break; |
2957 | case 's': | |
eb160463 | 2958 | ret = reg_node(pRExC_state, (U8)(LOC ? SPACEL : SPACE)); |
a0d0e21e | 2959 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2960 | nextchar(pRExC_state); |
fac92740 | 2961 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2962 | break; |
2963 | case 'S': | |
eb160463 | 2964 | ret = reg_node(pRExC_state, (U8)(LOC ? NSPACEL : NSPACE)); |
a0d0e21e | 2965 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2966 | nextchar(pRExC_state); |
fac92740 | 2967 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2968 | break; |
2969 | case 'd': | |
ffc61ed2 | 2970 | ret = reg_node(pRExC_state, DIGIT); |
a0d0e21e | 2971 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2972 | nextchar(pRExC_state); |
fac92740 | 2973 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2974 | break; |
2975 | case 'D': | |
ffc61ed2 | 2976 | ret = reg_node(pRExC_state, NDIGIT); |
a0d0e21e | 2977 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2978 | nextchar(pRExC_state); |
fac92740 | 2979 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e | 2980 | break; |
a14b48bc LW |
2981 | case 'p': |
2982 | case 'P': | |
3568d838 | 2983 | { |
830247a4 | 2984 | char* oldregxend = RExC_end; |
ccb2c380 | 2985 | char* parse_start = RExC_parse - 2; |
a14b48bc | 2986 | |
830247a4 | 2987 | if (RExC_parse[1] == '{') { |
3568d838 | 2988 | /* a lovely hack--pretend we saw [\pX] instead */ |
830247a4 IZ |
2989 | RExC_end = strchr(RExC_parse, '}'); |
2990 | if (!RExC_end) { | |
0da60cf5 | 2991 | U8 c = (U8)*RExC_parse; |
830247a4 IZ |
2992 | RExC_parse += 2; |
2993 | RExC_end = oldregxend; | |
0da60cf5 | 2994 | vFAIL2("Missing right brace on \\%c{}", c); |
b45f050a | 2995 | } |
830247a4 | 2996 | RExC_end++; |
a14b48bc | 2997 | } |
af6f566e | 2998 | else { |
830247a4 | 2999 | RExC_end = RExC_parse + 2; |
af6f566e HS |
3000 | if (RExC_end > oldregxend) |
3001 | RExC_end = oldregxend; | |
3002 | } | |
830247a4 | 3003 | RExC_parse--; |
a14b48bc | 3004 | |
ffc61ed2 | 3005 | ret = regclass(pRExC_state); |
a14b48bc | 3006 | |
830247a4 IZ |
3007 | RExC_end = oldregxend; |
3008 | RExC_parse--; | |
ccb2c380 MP |
3009 | |
3010 | Set_Node_Offset(ret, parse_start + 2); | |
3011 | Set_Node_Cur_Length(ret); | |
830247a4 | 3012 | nextchar(pRExC_state); |
a14b48bc LW |
3013 | *flagp |= HASWIDTH|SIMPLE; |
3014 | } | |
3015 | break; | |
a0d0e21e LW |
3016 | case 'n': |
3017 | case 'r': | |
3018 | case 't': | |
3019 | case 'f': | |
3020 | case 'e': | |
3021 | case 'a': | |
3022 | case 'x': | |
3023 | case 'c': | |
3024 | case '0': | |
3025 | goto defchar; | |
3026 | case '1': case '2': case '3': case '4': | |
3027 | case '5': case '6': case '7': case '8': case '9': | |
3028 | { | |
830247a4 | 3029 | I32 num = atoi(RExC_parse); |
a0d0e21e | 3030 | |
830247a4 | 3031 | if (num > 9 && num >= RExC_npar) |
a0d0e21e LW |
3032 | goto defchar; |
3033 | else { | |
fac92740 | 3034 | char * parse_start = RExC_parse - 1; /* MJD */ |
830247a4 IZ |
3035 | while (isDIGIT(*RExC_parse)) |
3036 | RExC_parse++; | |
b45f050a | 3037 | |
eb160463 | 3038 | if (!SIZE_ONLY && num > (I32)RExC_rx->nparens) |
9baa0206 | 3039 | vFAIL("Reference to nonexistent group"); |
830247a4 | 3040 | RExC_sawback = 1; |
eb160463 GS |
3041 | ret = reganode(pRExC_state, |
3042 | (U8)(FOLD ? (LOC ? REFFL : REFF) : REF), | |
3043 | num); | |
a0d0e21e | 3044 | *flagp |= HASWIDTH; |
fac92740 MJD |
3045 | |
3046 | /* override incorrect value set in reganode MJD */ | |
3047 | Set_Node_Offset(ret, parse_start+1); | |
3048 | Set_Node_Cur_Length(ret); /* MJD */ | |
830247a4 IZ |
3049 | RExC_parse--; |
3050 | nextchar(pRExC_state); | |
a0d0e21e LW |
3051 | } |
3052 | } | |
3053 | break; | |
3054 | case '\0': | |
830247a4 | 3055 | if (RExC_parse >= RExC_end) |
b45f050a | 3056 | FAIL("Trailing \\"); |
a0d0e21e LW |
3057 | /* FALL THROUGH */ |
3058 | default: | |
c9f97d15 IZ |
3059 | /* Do not generate `unrecognized' warnings here, we fall |
3060 | back into the quick-grab loop below */ | |
45948336 | 3061 | parse_start--; |
a0d0e21e LW |
3062 | goto defchar; |
3063 | } | |
3064 | break; | |
4633a7c4 LW |
3065 | |
3066 | case '#': | |
e2509266 | 3067 | if (RExC_flags & PMf_EXTENDED) { |
830247a4 IZ |
3068 | while (RExC_parse < RExC_end && *RExC_parse != '\n') RExC_parse++; |
3069 | if (RExC_parse < RExC_end) | |
4633a7c4 LW |
3070 | goto tryagain; |
3071 | } | |
3072 | /* FALL THROUGH */ | |
3073 | ||
a0d0e21e | 3074 | default: { |
ba210ebe | 3075 | register STRLEN len; |
58ae7d3f | 3076 | register UV ender; |
a0d0e21e | 3077 | register char *p; |
c277df42 | 3078 | char *oldp, *s; |
ba210ebe | 3079 | STRLEN numlen; |
80aecb99 | 3080 | STRLEN foldlen; |
60a8b682 | 3081 | U8 tmpbuf[UTF8_MAXLEN_FOLD+1], *foldbuf; |
f06dbbb7 JH |
3082 | |
3083 | parse_start = RExC_parse - 1; | |
a0d0e21e | 3084 | |
830247a4 | 3085 | RExC_parse++; |
a0d0e21e LW |
3086 | |
3087 | defchar: | |
58ae7d3f | 3088 | ender = 0; |
eb160463 GS |
3089 | ret = reg_node(pRExC_state, |
3090 | (U8)(FOLD ? (LOC ? EXACTFL : EXACTF) : EXACT)); | |
cd439c50 | 3091 | s = STRING(ret); |
830247a4 IZ |
3092 | for (len = 0, p = RExC_parse - 1; |
3093 | len < 127 && p < RExC_end; | |
a0d0e21e LW |
3094 | len++) |
3095 | { | |
3096 | oldp = p; | |
5b5a24f7 | 3097 | |
e2509266 | 3098 | if (RExC_flags & PMf_EXTENDED) |
830247a4 | 3099 | p = regwhite(p, RExC_end); |
a0d0e21e LW |
3100 | switch (*p) { |
3101 | case '^': | |
3102 | case '$': | |
3103 | case '.': | |
3104 | case '[': | |
3105 | case '(': | |
3106 | case ')': | |
3107 | case '|': | |
3108 | goto loopdone; | |
3109 | case '\\': | |
3110 | switch (*++p) { | |
3111 | case 'A': | |
1ed8eac0 JF |
3112 | case 'C': |
3113 | case 'X': | |
a0d0e21e LW |
3114 | case 'G': |
3115 | case 'Z': | |
b85d18e9 | 3116 | case 'z': |
a0d0e21e LW |
3117 | case 'w': |
3118 | case 'W': | |
3119 | case 'b': | |
3120 | case 'B': | |
3121 | case 's': | |
3122 | case 'S': | |
3123 | case 'd': | |
3124 | case 'D': | |
a14b48bc LW |
3125 | case 'p': |
3126 | case 'P': | |
a0d0e21e LW |
3127 | --p; |
3128 | goto loopdone; | |
3129 | case 'n': | |
3130 | ender = '\n'; | |
3131 | p++; | |
a687059c | 3132 | break; |
a0d0e21e LW |
3133 | case 'r': |
3134 | ender = '\r'; | |
3135 | p++; | |
a687059c | 3136 | break; |
a0d0e21e LW |
3137 | case 't': |
3138 | ender = '\t'; | |
3139 | p++; | |
a687059c | 3140 | break; |
a0d0e21e LW |
3141 | case 'f': |
3142 | ender = '\f'; | |
3143 | p++; | |
a687059c | 3144 | break; |
a0d0e21e | 3145 | case 'e': |
c7f1f016 | 3146 | ender = ASCII_TO_NATIVE('\033'); |
a0d0e21e | 3147 | p++; |
a687059c | 3148 | break; |
a0d0e21e | 3149 | case 'a': |
c7f1f016 | 3150 | ender = ASCII_TO_NATIVE('\007'); |
a0d0e21e | 3151 | p++; |
a687059c | 3152 | break; |
a0d0e21e | 3153 | case 'x': |
a0ed51b3 LW |
3154 | if (*++p == '{') { |
3155 | char* e = strchr(p, '}'); | |
b81d288d | 3156 | |
b45f050a | 3157 | if (!e) { |
830247a4 | 3158 | RExC_parse = p + 1; |
b45f050a JF |
3159 | vFAIL("Missing right brace on \\x{}"); |
3160 | } | |
de5f0749 | 3161 | else { |
a4c04bdc NC |
3162 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES |
3163 | | PERL_SCAN_DISALLOW_PREFIX; | |
53305cf1 NC |
3164 | numlen = e - p - 1; |
3165 | ender = grok_hex(p + 1, &numlen, &flags, NULL); | |
aaa80028 JH |
3166 | if (ender > 0xff) |
3167 | RExC_utf8 = 1; | |
a0ed51b3 LW |
3168 | p = e + 1; |
3169 | } | |
a0ed51b3 LW |
3170 | } |
3171 | else { | |
a4c04bdc | 3172 | I32 flags = PERL_SCAN_DISALLOW_PREFIX; |
53305cf1 NC |
3173 | numlen = 2; |
3174 | ender = grok_hex(p, &numlen, &flags, NULL); | |
a0ed51b3 LW |
3175 | p += numlen; |
3176 | } | |
a687059c | 3177 | break; |
a0d0e21e LW |
3178 | case 'c': |
3179 | p++; | |
bbce6d69 | 3180 | ender = UCHARAT(p++); |
3181 | ender = toCTRL(ender); | |
a687059c | 3182 | break; |
a0d0e21e LW |
3183 | case '0': case '1': case '2': case '3':case '4': |
3184 | case '5': case '6': case '7': case '8':case '9': | |
3185 | if (*p == '0' || | |
830247a4 | 3186 | (isDIGIT(p[1]) && atoi(p) >= RExC_npar) ) { |
53305cf1 NC |
3187 | I32 flags = 0; |
3188 | numlen = 3; | |
3189 | ender = grok_oct(p, &numlen, &flags, NULL); | |
a0d0e21e LW |
3190 | p += numlen; |
3191 | } | |
3192 | else { | |
3193 | --p; | |
3194 | goto loopdone; | |
a687059c LW |
3195 | } |
3196 | break; | |
a0d0e21e | 3197 | case '\0': |
830247a4 | 3198 | if (p >= RExC_end) |
b45f050a | 3199 | FAIL("Trailing \\"); |
a687059c | 3200 | /* FALL THROUGH */ |
a0d0e21e | 3201 | default: |
e476b1b5 | 3202 | if (!SIZE_ONLY && ckWARN(WARN_REGEXP) && isALPHA(*p)) |
4193bef7 | 3203 | vWARN2(p + 1, "Unrecognized escape \\%c passed through", UCHARAT(p)); |
a0ed51b3 | 3204 | goto normal_default; |
a0d0e21e LW |
3205 | } |
3206 | break; | |
a687059c | 3207 | default: |
a0ed51b3 | 3208 | normal_default: |
fd400ab9 | 3209 | if (UTF8_IS_START(*p) && UTF) { |
5e12f4fb | 3210 | ender = utf8n_to_uvchr((U8*)p, RExC_end - p, |
ba210ebe | 3211 | &numlen, 0); |
a0ed51b3 LW |
3212 | p += numlen; |
3213 | } | |
3214 | else | |
3215 | ender = *p++; | |
a0d0e21e | 3216 | break; |
a687059c | 3217 | } |
e2509266 | 3218 | if (RExC_flags & PMf_EXTENDED) |
830247a4 | 3219 | p = regwhite(p, RExC_end); |
60a8b682 JH |
3220 | if (UTF && FOLD) { |
3221 | /* Prime the casefolded buffer. */ | |
ac7e0132 | 3222 | ender = toFOLD_uni(ender, tmpbuf, &foldlen); |
60a8b682 | 3223 | } |
a0d0e21e LW |
3224 | if (ISMULT2(p)) { /* Back off on ?+*. */ |
3225 | if (len) | |
3226 | p = oldp; | |
16ea2a2e | 3227 | else if (UTF) { |
0ebc6274 JH |
3228 | STRLEN unilen; |
3229 | ||
80aecb99 | 3230 | if (FOLD) { |
60a8b682 | 3231 | /* Emit all the Unicode characters. */ |
80aecb99 JH |
3232 | for (foldbuf = tmpbuf; |
3233 | foldlen; | |
3234 | foldlen -= numlen) { | |
3235 | ender = utf8_to_uvchr(foldbuf, &numlen); | |
9dc45d57 | 3236 | if (numlen > 0) { |
0ebc6274 JH |
3237 | reguni(pRExC_state, ender, s, &unilen); |
3238 | s += unilen; | |
3239 | len += unilen; | |
3240 | /* In EBCDIC the numlen | |
3241 | * and unilen can differ. */ | |
9dc45d57 | 3242 | foldbuf += numlen; |
47654450 JH |
3243 | if (numlen >= foldlen) |
3244 | break; | |
9dc45d57 JH |
3245 | } |
3246 | else | |
3247 | break; /* "Can't happen." */ | |
80aecb99 JH |
3248 | } |
3249 | } | |
3250 | else { | |
0ebc6274 | 3251 | reguni(pRExC_state, ender, s, &unilen); |
9ede7db1 | 3252 | if (unilen > 0) { |
0ebc6274 JH |
3253 | s += unilen; |
3254 | len += unilen; | |
9dc45d57 | 3255 | } |
80aecb99 | 3256 | } |
a0ed51b3 | 3257 | } |
a0d0e21e LW |
3258 | else { |
3259 | len++; | |
eb160463 | 3260 | REGC((char)ender, s++); |
a0d0e21e LW |
3261 | } |
3262 | break; | |
a687059c | 3263 | } |
16ea2a2e | 3264 | if (UTF) { |
0ebc6274 JH |
3265 | STRLEN unilen; |
3266 | ||
80aecb99 | 3267 | if (FOLD) { |
60a8b682 | 3268 | /* Emit all the Unicode characters. */ |
80aecb99 JH |
3269 | for (foldbuf = tmpbuf; |
3270 | foldlen; | |
3271 | foldlen -= numlen) { | |
3272 | ender = utf8_to_uvchr(foldbuf, &numlen); | |
9dc45d57 | 3273 | if (numlen > 0) { |
0ebc6274 JH |
3274 | reguni(pRExC_state, ender, s, &unilen); |
3275 | len += unilen; | |
3276 | s += unilen; | |
3277 | /* In EBCDIC the numlen | |
3278 | * and unilen can differ. */ | |
9dc45d57 | 3279 | foldbuf += numlen; |
47654450 JH |
3280 | if (numlen >= foldlen) |
3281 | break; | |
9dc45d57 JH |
3282 | } |
3283 | else | |
3284 | break; | |
80aecb99 JH |
3285 | } |
3286 | } | |
3287 | else { | |
0ebc6274 | 3288 | reguni(pRExC_state, ender, s, &unilen); |
9ede7db1 | 3289 | if (unilen > 0) { |
0ebc6274 JH |
3290 | s += unilen; |
3291 | len += unilen; | |
9dc45d57 | 3292 | } |
80aecb99 JH |
3293 | } |
3294 | len--; | |
a0ed51b3 LW |
3295 | } |
3296 | else | |
eb160463 | 3297 | REGC((char)ender, s++); |
a0d0e21e LW |
3298 | } |
3299 | loopdone: | |
830247a4 | 3300 | RExC_parse = p - 1; |
fac92740 | 3301 | Set_Node_Cur_Length(ret); /* MJD */ |
830247a4 | 3302 | nextchar(pRExC_state); |
793db0cb JH |
3303 | { |
3304 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
3305 | IV iv = len; | |
3306 | if (iv < 0) | |
3307 | vFAIL("Internal disaster"); | |
3308 | } | |
a0d0e21e LW |
3309 | if (len > 0) |
3310 | *flagp |= HASWIDTH; | |
090f7165 | 3311 | if (len == 1 && UNI_IS_INVARIANT(ender)) |
a0d0e21e | 3312 | *flagp |= SIMPLE; |
c277df42 | 3313 | if (!SIZE_ONLY) |
cd439c50 IZ |
3314 | STR_LEN(ret) = len; |
3315 | if (SIZE_ONLY) | |
830247a4 | 3316 | RExC_size += STR_SZ(len); |
cd439c50 | 3317 | else |
830247a4 | 3318 | RExC_emit += STR_SZ(len); |
a687059c | 3319 | } |
a0d0e21e LW |
3320 | break; |
3321 | } | |
a687059c | 3322 | |
60a8b682 JH |
3323 | /* If the encoding pragma is in effect recode the text of |
3324 | * any EXACT-kind nodes. */ | |
22c54be3 | 3325 | if (PL_encoding && PL_regkind[(U8)OP(ret)] == EXACT) { |
d0063567 DK |
3326 | STRLEN oldlen = STR_LEN(ret); |
3327 | SV *sv = sv_2mortal(newSVpvn(STRING(ret), oldlen)); | |
3328 | ||
3329 | if (RExC_utf8) | |
3330 | SvUTF8_on(sv); | |
3331 | if (sv_utf8_downgrade(sv, TRUE)) { | |
3332 | char *s = sv_recode_to_utf8(sv, PL_encoding); | |
3333 | STRLEN newlen = SvCUR(sv); | |
3334 | ||
3335 | if (SvUTF8(sv)) | |
3336 | RExC_utf8 = 1; | |
3337 | if (!SIZE_ONLY) { | |
3338 | DEBUG_r(PerlIO_printf(Perl_debug_log, "recode %*s to %*s\n", | |
3339 | (int)oldlen, STRING(ret), | |
3340 | (int)newlen, s)); | |
3341 | Copy(s, STRING(ret), newlen, char); | |
3342 | STR_LEN(ret) += newlen - oldlen; | |
3343 | RExC_emit += STR_SZ(newlen) - STR_SZ(oldlen); | |
3344 | } else | |
3345 | RExC_size += STR_SZ(newlen) - STR_SZ(oldlen); | |
3346 | } | |
a72c7584 JH |
3347 | } |
3348 | ||
a0d0e21e | 3349 | return(ret); |
a687059c LW |
3350 | } |
3351 | ||
873ef191 | 3352 | STATIC char * |
cea2e8a9 | 3353 | S_regwhite(pTHX_ char *p, char *e) |
5b5a24f7 CS |
3354 | { |
3355 | while (p < e) { | |
3356 | if (isSPACE(*p)) | |
3357 | ++p; | |
3358 | else if (*p == '#') { | |
3359 | do { | |
3360 | p++; | |
3361 | } while (p < e && *p != '\n'); | |
3362 | } | |
3363 | else | |
3364 | break; | |
3365 | } | |
3366 | return p; | |
3367 | } | |
3368 | ||
b8c5462f JH |
3369 | /* Parse POSIX character classes: [[:foo:]], [[=foo=]], [[.foo.]]. |
3370 | Character classes ([:foo:]) can also be negated ([:^foo:]). | |
3371 | Returns a named class id (ANYOF_XXX) if successful, -1 otherwise. | |
3372 | Equivalence classes ([=foo=]) and composites ([.foo.]) are parsed, | |
beeb77fc | 3373 | but trigger failures because they are currently unimplemented. */ |
9a86a77b JH |
3374 | |
3375 | #define POSIXCC_DONE(c) ((c) == ':') | |
3376 | #define POSIXCC_NOTYET(c) ((c) == '=' || (c) == '.') | |
3377 | #define POSIXCC(c) (POSIXCC_DONE(c) || POSIXCC_NOTYET(c)) | |
3378 | ||
b8c5462f | 3379 | STATIC I32 |
830247a4 | 3380 | S_regpposixcc(pTHX_ RExC_state_t *pRExC_state, I32 value) |
620e46c5 JH |
3381 | { |
3382 | char *posixcc = 0; | |
936ed897 | 3383 | I32 namedclass = OOB_NAMEDCLASS; |
620e46c5 | 3384 | |
830247a4 | 3385 | if (value == '[' && RExC_parse + 1 < RExC_end && |
620e46c5 | 3386 | /* I smell either [: or [= or [. -- POSIX has been here, right? */ |
9a86a77b JH |
3387 | POSIXCC(UCHARAT(RExC_parse))) { |
3388 | char c = UCHARAT(RExC_parse); | |
830247a4 | 3389 | char* s = RExC_parse++; |
b81d288d | 3390 | |
9a86a77b | 3391 | while (RExC_parse < RExC_end && UCHARAT(RExC_parse) != c) |
830247a4 IZ |
3392 | RExC_parse++; |
3393 | if (RExC_parse == RExC_end) | |
620e46c5 | 3394 | /* Grandfather lone [:, [=, [. */ |
830247a4 | 3395 | RExC_parse = s; |
620e46c5 | 3396 | else { |
830247a4 | 3397 | char* t = RExC_parse++; /* skip over the c */ |
b8c5462f | 3398 | |
9a86a77b | 3399 | if (UCHARAT(RExC_parse) == ']') { |
830247a4 | 3400 | RExC_parse++; /* skip over the ending ] */ |
b8c5462f JH |
3401 | posixcc = s + 1; |
3402 | if (*s == ':') { | |
3403 | I32 complement = *posixcc == '^' ? *posixcc++ : 0; | |
3404 | I32 skip = 5; /* the most common skip */ | |
3405 | ||
3406 | switch (*posixcc) { | |
3407 | case 'a': | |
3408 | if (strnEQ(posixcc, "alnum", 5)) | |
3409 | namedclass = | |
3410 | complement ? ANYOF_NALNUMC : ANYOF_ALNUMC; | |
3411 | else if (strnEQ(posixcc, "alpha", 5)) | |
3412 | namedclass = | |
3413 | complement ? ANYOF_NALPHA : ANYOF_ALPHA; | |
3414 | else if (strnEQ(posixcc, "ascii", 5)) | |
3415 | namedclass = | |
3416 | complement ? ANYOF_NASCII : ANYOF_ASCII; | |
3417 | break; | |
aaa51d5e JF |
3418 | case 'b': |
3419 | if (strnEQ(posixcc, "blank", 5)) | |
3420 | namedclass = | |
3421 | complement ? ANYOF_NBLANK : ANYOF_BLANK; | |
3422 | break; | |
b8c5462f JH |
3423 | case 'c': |
3424 | if (strnEQ(posixcc, "cntrl", 5)) | |
3425 | namedclass = | |
3426 | complement ? ANYOF_NCNTRL : ANYOF_CNTRL; | |
3427 | break; | |
3428 | case 'd': | |
3429 | if (strnEQ(posixcc, "digit", 5)) | |
3430 | namedclass = | |
3431 | complement ? ANYOF_NDIGIT : ANYOF_DIGIT; | |
3432 | break; | |
3433 | case 'g': | |
3434 | if (strnEQ(posixcc, "graph", 5)) | |
3435 | namedclass = | |
3436 | complement ? ANYOF_NGRAPH : ANYOF_GRAPH; | |
3437 | break; | |
3438 | case 'l': | |
3439 | if (strnEQ(posixcc, "lower", 5)) | |
3440 | namedclass = | |
3441 | complement ? ANYOF_NLOWER : ANYOF_LOWER; | |
3442 | break; | |
3443 | case 'p': | |
3444 | if (strnEQ(posixcc, "print", 5)) | |
3445 | namedclass = | |
3446 | complement ? ANYOF_NPRINT : ANYOF_PRINT; | |
3447 | else if (strnEQ(posixcc, "punct", 5)) | |
3448 | namedclass = | |
3449 | complement ? ANYOF_NPUNCT : ANYOF_PUNCT; | |
3450 | break; | |
3451 | case 's': | |
3452 | if (strnEQ(posixcc, "space", 5)) | |
3453 | namedclass = | |
aaa51d5e | 3454 | complement ? ANYOF_NPSXSPC : ANYOF_PSXSPC; |
cc4319de | 3455 | break; |
b8c5462f JH |
3456 | case 'u': |
3457 | if (strnEQ(posixcc, "upper", 5)) | |
3458 | namedclass = | |
3459 | complement ? ANYOF_NUPPER : ANYOF_UPPER; | |
3460 | break; | |
3461 | case 'w': /* this is not POSIX, this is the Perl \w */ | |
3462 | if (strnEQ(posixcc, "word", 4)) { | |
3463 | namedclass = | |
3464 | complement ? ANYOF_NALNUM : ANYOF_ALNUM; | |
3465 | skip = 4; | |
3466 | } | |
3467 | break; | |
3468 | case 'x': | |
3469 | if (strnEQ(posixcc, "xdigit", 6)) { | |
3470 | namedclass = | |
3471 | complement ? ANYOF_NXDIGIT : ANYOF_XDIGIT; | |
3472 | skip = 6; | |
3473 | } | |
3474 | break; | |
3475 | } | |
ac561586 JH |
3476 | if (namedclass == OOB_NAMEDCLASS || |
3477 | posixcc[skip] != ':' || | |
3478 | posixcc[skip+1] != ']') | |
b45f050a JF |
3479 | { |
3480 | Simple_vFAIL3("POSIX class [:%.*s:] unknown", | |
3481 | t - s - 1, s + 1); | |
3482 | } | |
3483 | } else if (!SIZE_ONLY) { | |
b8c5462f | 3484 | /* [[=foo=]] and [[.foo.]] are still future. */ |
b45f050a | 3485 | |
830247a4 | 3486 | /* adjust RExC_parse so the warning shows after |
b45f050a | 3487 | the class closes */ |
9a86a77b | 3488 | while (UCHARAT(RExC_parse) && UCHARAT(RExC_parse) != ']') |
830247a4 | 3489 | RExC_parse++; |
b45f050a JF |
3490 | Simple_vFAIL3("POSIX syntax [%c %c] is reserved for future extensions", c, c); |
3491 | } | |
b8c5462f JH |
3492 | } else { |
3493 | /* Maternal grandfather: | |
3494 | * "[:" ending in ":" but not in ":]" */ | |
830247a4 | 3495 | RExC_parse = s; |
767d463e | 3496 | } |
620e46c5 JH |
3497 | } |
3498 | } | |
3499 | ||
b8c5462f JH |
3500 | return namedclass; |
3501 | } | |
3502 | ||
3503 | STATIC void | |
830247a4 | 3504 | S_checkposixcc(pTHX_ RExC_state_t *pRExC_state) |
b8c5462f | 3505 | { |
b938889d | 3506 | if (!SIZE_ONLY && POSIXCC(UCHARAT(RExC_parse))) { |
830247a4 | 3507 | char *s = RExC_parse; |
93733859 | 3508 | char c = *s++; |
b8c5462f JH |
3509 | |
3510 | while(*s && isALNUM(*s)) | |
3511 | s++; | |
3512 | if (*s && c == *s && s[1] == ']') { | |
cd84f5b2 RGS |
3513 | if (ckWARN(WARN_REGEXP)) |
3514 | vWARN3(s+2, | |
3515 | "POSIX syntax [%c %c] belongs inside character classes", | |
3516 | c, c); | |
b45f050a JF |
3517 | |
3518 | /* [[=foo=]] and [[.foo.]] are still future. */ | |
9a86a77b | 3519 | if (POSIXCC_NOTYET(c)) { |
830247a4 | 3520 | /* adjust RExC_parse so the error shows after |
b45f050a | 3521 | the class closes */ |
9a86a77b | 3522 | while (UCHARAT(RExC_parse) && UCHARAT(RExC_parse++) != ']') |
b45f050a JF |
3523 | ; |
3524 | Simple_vFAIL3("POSIX syntax [%c %c] is reserved for future extensions", c, c); | |
3525 | } | |
b8c5462f JH |
3526 | } |
3527 | } | |
620e46c5 JH |
3528 | } |
3529 | ||
76e3520e | 3530 | STATIC regnode * |
830247a4 | 3531 | S_regclass(pTHX_ RExC_state_t *pRExC_state) |
a687059c | 3532 | { |
ffc61ed2 | 3533 | register UV value; |
9a86a77b | 3534 | register UV nextvalue; |
3568d838 | 3535 | register IV prevvalue = OOB_UNICODE; |
ffc61ed2 | 3536 | register IV range = 0; |
c277df42 | 3537 | register regnode *ret; |
ba210ebe | 3538 | STRLEN numlen; |
ffc61ed2 | 3539 | IV namedclass; |
9c5ffd7c | 3540 | char *rangebegin = 0; |
936ed897 | 3541 | bool need_class = 0; |
9c5ffd7c | 3542 | SV *listsv = Nullsv; |
ffc61ed2 JH |
3543 | register char *e; |
3544 | UV n; | |
9e55ce06 JH |
3545 | bool optimize_invert = TRUE; |
3546 | AV* unicode_alternate = 0; | |
1b2d223b JH |
3547 | #ifdef EBCDIC |
3548 | UV literal_endpoint = 0; | |
3549 | #endif | |
ffc61ed2 JH |
3550 | |
3551 | ret = reganode(pRExC_state, ANYOF, 0); | |
3552 | ||
3553 | if (!SIZE_ONLY) | |
3554 | ANYOF_FLAGS(ret) = 0; | |
3555 | ||
9a86a77b | 3556 | if (UCHARAT(RExC_parse) == '^') { /* Complement of range. */ |
ffc61ed2 JH |
3557 | RExC_naughty++; |
3558 | RExC_parse++; | |
3559 | if (!SIZE_ONLY) | |
3560 | ANYOF_FLAGS(ret) |= ANYOF_INVERT; | |
3561 | } | |
a0d0e21e | 3562 | |
936ed897 | 3563 | if (SIZE_ONLY) |
830247a4 | 3564 | RExC_size += ANYOF_SKIP; |
936ed897 | 3565 | else { |
830247a4 | 3566 | RExC_emit += ANYOF_SKIP; |
936ed897 IZ |
3567 | if (FOLD) |
3568 | ANYOF_FLAGS(ret) |= ANYOF_FOLD; | |
3569 | if (LOC) | |
3570 | ANYOF_FLAGS(ret) |= ANYOF_LOCALE; | |
ffc61ed2 JH |
3571 | ANYOF_BITMAP_ZERO(ret); |
3572 | listsv = newSVpvn("# comment\n", 10); | |
a0d0e21e | 3573 | } |
b8c5462f | 3574 | |
9a86a77b JH |
3575 | nextvalue = RExC_parse < RExC_end ? UCHARAT(RExC_parse) : 0; |
3576 | ||
b938889d | 3577 | if (!SIZE_ONLY && POSIXCC(nextvalue)) |
830247a4 | 3578 | checkposixcc(pRExC_state); |
b8c5462f | 3579 | |
f064b6ad HS |
3580 | /* allow 1st char to be ] (allowing it to be - is dealt with later) */ |
3581 | if (UCHARAT(RExC_parse) == ']') | |
3582 | goto charclassloop; | |
ffc61ed2 | 3583 | |
9a86a77b | 3584 | while (RExC_parse < RExC_end && UCHARAT(RExC_parse) != ']') { |
ffc61ed2 JH |
3585 | |
3586 | charclassloop: | |
3587 | ||
3588 | namedclass = OOB_NAMEDCLASS; /* initialize as illegal */ | |
3589 | ||
73b437c8 | 3590 | if (!range) |
830247a4 | 3591 | rangebegin = RExC_parse; |
ffc61ed2 | 3592 | if (UTF) { |
5e12f4fb | 3593 | value = utf8n_to_uvchr((U8*)RExC_parse, |
3568d838 JH |
3594 | RExC_end - RExC_parse, |
3595 | &numlen, 0); | |
ffc61ed2 JH |
3596 | RExC_parse += numlen; |
3597 | } | |
3598 | else | |
3599 | value = UCHARAT(RExC_parse++); | |
9a86a77b JH |
3600 | nextvalue = RExC_parse < RExC_end ? UCHARAT(RExC_parse) : 0; |
3601 | if (value == '[' && POSIXCC(nextvalue)) | |
830247a4 | 3602 | namedclass = regpposixcc(pRExC_state, value); |
620e46c5 | 3603 | else if (value == '\\') { |
ffc61ed2 | 3604 | if (UTF) { |
5e12f4fb | 3605 | value = utf8n_to_uvchr((U8*)RExC_parse, |
ffc61ed2 JH |
3606 | RExC_end - RExC_parse, |
3607 | &numlen, 0); | |
3608 | RExC_parse += numlen; | |
3609 | } | |
3610 | else | |
3611 | value = UCHARAT(RExC_parse++); | |
470c3474 | 3612 | /* Some compilers cannot handle switching on 64-bit integer |
ffc61ed2 | 3613 | * values, therefore value cannot be an UV. Yes, this will |
e2962f66 JH |
3614 | * be a problem later if we want switch on Unicode. |
3615 | * A similar issue a little bit later when switching on | |
3616 | * namedclass. --jhi */ | |
ffc61ed2 | 3617 | switch ((I32)value) { |
b8c5462f JH |
3618 | case 'w': namedclass = ANYOF_ALNUM; break; |
3619 | case 'W': namedclass = ANYOF_NALNUM; break; | |
3620 | case 's': namedclass = ANYOF_SPACE; break; | |
3621 | case 'S': namedclass = ANYOF_NSPACE; break; | |
3622 | case 'd': namedclass = ANYOF_DIGIT; break; | |
3623 | case 'D': namedclass = ANYOF_NDIGIT; break; | |
ffc61ed2 JH |
3624 | case 'p': |
3625 | case 'P': | |
af6f566e | 3626 | if (RExC_parse >= RExC_end) |
2a4859cd | 3627 | vFAIL2("Empty \\%c{}", (U8)value); |
ffc61ed2 | 3628 | if (*RExC_parse == '{') { |
0da60cf5 | 3629 | U8 c = (U8)value; |
ffc61ed2 JH |
3630 | e = strchr(RExC_parse++, '}'); |
3631 | if (!e) | |
0da60cf5 | 3632 | vFAIL2("Missing right brace on \\%c{}", c); |
ab13f0c7 JH |
3633 | while (isSPACE(UCHARAT(RExC_parse))) |
3634 | RExC_parse++; | |
3635 | if (e == RExC_parse) | |
0da60cf5 | 3636 | vFAIL2("Empty \\%c{}", c); |
ffc61ed2 | 3637 | n = e - RExC_parse; |
ab13f0c7 JH |
3638 | while (isSPACE(UCHARAT(RExC_parse + n - 1))) |
3639 | n--; | |
ffc61ed2 JH |
3640 | } |
3641 | else { | |
3642 | e = RExC_parse; | |
3643 | n = 1; | |
3644 | } | |
3645 | if (!SIZE_ONLY) { | |
ab13f0c7 JH |
3646 | if (UCHARAT(RExC_parse) == '^') { |
3647 | RExC_parse++; | |
3648 | n--; | |
3649 | value = value == 'p' ? 'P' : 'p'; /* toggle */ | |
3650 | while (isSPACE(UCHARAT(RExC_parse))) { | |
3651 | RExC_parse++; | |
3652 | n--; | |
3653 | } | |
3654 | } | |
ffc61ed2 | 3655 | if (value == 'p') |
ab13f0c7 JH |
3656 | Perl_sv_catpvf(aTHX_ listsv, |
3657 | "+utf8::%.*s\n", (int)n, RExC_parse); | |
ffc61ed2 | 3658 | else |
ab13f0c7 JH |
3659 | Perl_sv_catpvf(aTHX_ listsv, |
3660 | "!utf8::%.*s\n", (int)n, RExC_parse); | |
ffc61ed2 JH |
3661 | } |
3662 | RExC_parse = e + 1; | |
3663 | ANYOF_FLAGS(ret) |= ANYOF_UNICODE; | |
f81125e2 JP |
3664 | namedclass = ANYOF_MAX; /* no official name, but it's named */ |
3665 | break; | |
b8c5462f JH |
3666 | case 'n': value = '\n'; break; |
3667 | case 'r': value = '\r'; break; | |
3668 | case 't': value = '\t'; break; | |
3669 | case 'f': value = '\f'; break; | |
3670 | case 'b': value = '\b'; break; | |
c7f1f016 NIS |
3671 | case 'e': value = ASCII_TO_NATIVE('\033');break; |
3672 | case 'a': value = ASCII_TO_NATIVE('\007');break; | |
b8c5462f | 3673 | case 'x': |
ffc61ed2 | 3674 | if (*RExC_parse == '{') { |
a4c04bdc NC |
3675 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES |
3676 | | PERL_SCAN_DISALLOW_PREFIX; | |
ffc61ed2 | 3677 | e = strchr(RExC_parse++, '}'); |
b81d288d | 3678 | if (!e) |
ffc61ed2 | 3679 | vFAIL("Missing right brace on \\x{}"); |
53305cf1 NC |
3680 | |
3681 | numlen = e - RExC_parse; | |
3682 | value = grok_hex(RExC_parse, &numlen, &flags, NULL); | |
ffc61ed2 JH |
3683 | RExC_parse = e + 1; |
3684 | } | |
3685 | else { | |
a4c04bdc | 3686 | I32 flags = PERL_SCAN_DISALLOW_PREFIX; |
53305cf1 NC |
3687 | numlen = 2; |
3688 | value = grok_hex(RExC_parse, &numlen, &flags, NULL); | |
ffc61ed2 JH |
3689 | RExC_parse += numlen; |
3690 | } | |
b8c5462f JH |
3691 | break; |
3692 | case 'c': | |
830247a4 | 3693 | value = UCHARAT(RExC_parse++); |
b8c5462f JH |
3694 | value = toCTRL(value); |
3695 | break; | |
3696 | case '0': case '1': case '2': case '3': case '4': | |
3697 | case '5': case '6': case '7': case '8': case '9': | |
53305cf1 NC |
3698 | { |
3699 | I32 flags = 0; | |
3700 | numlen = 3; | |
3701 | value = grok_oct(--RExC_parse, &numlen, &flags, NULL); | |
830247a4 | 3702 | RExC_parse += numlen; |
b8c5462f | 3703 | break; |
53305cf1 | 3704 | } |
1028017a | 3705 | default: |
e476b1b5 | 3706 | if (!SIZE_ONLY && ckWARN(WARN_REGEXP) && isALPHA(value)) |
ffc61ed2 JH |
3707 | vWARN2(RExC_parse, |
3708 | "Unrecognized escape \\%c in character class passed through", | |
3709 | (int)value); | |
1028017a | 3710 | break; |
b8c5462f | 3711 | } |
ffc61ed2 | 3712 | } /* end of \blah */ |
1b2d223b JH |
3713 | #ifdef EBCDIC |
3714 | else | |
3715 | literal_endpoint++; | |
3716 | #endif | |
ffc61ed2 JH |
3717 | |
3718 | if (namedclass > OOB_NAMEDCLASS) { /* this is a named class \blah */ | |
3719 | ||
3720 | if (!SIZE_ONLY && !need_class) | |
936ed897 | 3721 | ANYOF_CLASS_ZERO(ret); |
ffc61ed2 | 3722 | |
936ed897 | 3723 | need_class = 1; |
ffc61ed2 JH |
3724 | |
3725 | /* a bad range like a-\d, a-[:digit:] ? */ | |
3726 | if (range) { | |
73b437c8 | 3727 | if (!SIZE_ONLY) { |
e476b1b5 | 3728 | if (ckWARN(WARN_REGEXP)) |
830247a4 | 3729 | vWARN4(RExC_parse, |
b45f050a | 3730 | "False [] range \"%*.*s\"", |
830247a4 IZ |
3731 | RExC_parse - rangebegin, |
3732 | RExC_parse - rangebegin, | |
b45f050a | 3733 | rangebegin); |
3568d838 JH |
3734 | if (prevvalue < 256) { |
3735 | ANYOF_BITMAP_SET(ret, prevvalue); | |
ffc61ed2 JH |
3736 | ANYOF_BITMAP_SET(ret, '-'); |
3737 | } | |
3738 | else { | |
3739 | ANYOF_FLAGS(ret) |= ANYOF_UNICODE; | |
3740 | Perl_sv_catpvf(aTHX_ listsv, | |
3568d838 | 3741 | "%04"UVxf"\n%04"UVxf"\n", (UV)prevvalue, (UV) '-'); |
ffc61ed2 | 3742 | } |
b8c5462f | 3743 | } |
ffc61ed2 JH |
3744 | |
3745 | range = 0; /* this was not a true range */ | |
73b437c8 | 3746 | } |
ffc61ed2 | 3747 | |
73b437c8 | 3748 | if (!SIZE_ONLY) { |
3568d838 JH |
3749 | if (namedclass > OOB_NAMEDCLASS) |
3750 | optimize_invert = FALSE; | |
e2962f66 JH |
3751 | /* Possible truncation here but in some 64-bit environments |
3752 | * the compiler gets heartburn about switch on 64-bit values. | |
3753 | * A similar issue a little earlier when switching on value. | |
98f323fa | 3754 | * --jhi */ |
e2962f66 | 3755 | switch ((I32)namedclass) { |
73b437c8 JH |
3756 | case ANYOF_ALNUM: |
3757 | if (LOC) | |
936ed897 | 3758 | ANYOF_CLASS_SET(ret, ANYOF_ALNUM); |
73b437c8 JH |
3759 | else { |
3760 | for (value = 0; value < 256; value++) | |
3761 | if (isALNUM(value)) | |
936ed897 | 3762 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3763 | } |
ffc61ed2 | 3764 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsWord\n"); |
73b437c8 JH |
3765 | break; |
3766 | case ANYOF_NALNUM: | |
3767 | if (LOC) | |
936ed897 | 3768 | ANYOF_CLASS_SET(ret, ANYOF_NALNUM); |
73b437c8 JH |
3769 | else { |
3770 | for (value = 0; value < 256; value++) | |
3771 | if (!isALNUM(value)) | |
936ed897 | 3772 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3773 | } |
ffc61ed2 | 3774 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsWord\n"); |
73b437c8 | 3775 | break; |
ffc61ed2 | 3776 | case ANYOF_ALNUMC: |
73b437c8 | 3777 | if (LOC) |
ffc61ed2 | 3778 | ANYOF_CLASS_SET(ret, ANYOF_ALNUMC); |
73b437c8 JH |
3779 | else { |
3780 | for (value = 0; value < 256; value++) | |
ffc61ed2 | 3781 | if (isALNUMC(value)) |
936ed897 | 3782 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3783 | } |
ffc61ed2 | 3784 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsAlnum\n"); |
73b437c8 JH |
3785 | break; |
3786 | case ANYOF_NALNUMC: | |
3787 | if (LOC) | |
936ed897 | 3788 | ANYOF_CLASS_SET(ret, ANYOF_NALNUMC); |
73b437c8 JH |
3789 | else { |
3790 | for (value = 0; value < 256; value++) | |
3791 | if (!isALNUMC(value)) | |
936ed897 | 3792 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3793 | } |
ffc61ed2 | 3794 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsAlnum\n"); |
73b437c8 JH |
3795 | break; |
3796 | case ANYOF_ALPHA: | |
3797 | if (LOC) | |
936ed897 | 3798 | ANYOF_CLASS_SET(ret, ANYOF_ALPHA); |
73b437c8 JH |
3799 | else { |
3800 | for (value = 0; value < 256; value++) | |
3801 | if (isALPHA(value)) | |
936ed897 | 3802 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3803 | } |
ffc61ed2 | 3804 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsAlpha\n"); |
73b437c8 JH |
3805 | break; |
3806 | case ANYOF_NALPHA: | |
3807 | if (LOC) | |
936ed897 | 3808 | ANYOF_CLASS_SET(ret, ANYOF_NALPHA); |
73b437c8 JH |
3809 | else { |
3810 | for (value = 0; value < 256; value++) | |
3811 | if (!isALPHA(value)) | |
936ed897 | 3812 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3813 | } |
ffc61ed2 | 3814 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsAlpha\n"); |
73b437c8 JH |
3815 | break; |
3816 | case ANYOF_ASCII: | |
3817 | if (LOC) | |
936ed897 | 3818 | ANYOF_CLASS_SET(ret, ANYOF_ASCII); |
73b437c8 | 3819 | else { |
c7f1f016 | 3820 | #ifndef EBCDIC |
1ba5c669 JH |
3821 | for (value = 0; value < 128; value++) |
3822 | ANYOF_BITMAP_SET(ret, value); | |
3823 | #else /* EBCDIC */ | |
ffbc6a93 | 3824 | for (value = 0; value < 256; value++) { |
3a3c4447 JH |
3825 | if (isASCII(value)) |
3826 | ANYOF_BITMAP_SET(ret, value); | |
ffbc6a93 | 3827 | } |
1ba5c669 | 3828 | #endif /* EBCDIC */ |
73b437c8 | 3829 | } |
ffc61ed2 | 3830 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsASCII\n"); |
73b437c8 JH |
3831 | break; |
3832 | case ANYOF_NASCII: | |
3833 | if (LOC) | |
936ed897 | 3834 | ANYOF_CLASS_SET(ret, ANYOF_NASCII); |
73b437c8 | 3835 | else { |
c7f1f016 | 3836 | #ifndef EBCDIC |
1ba5c669 JH |
3837 | for (value = 128; value < 256; value++) |
3838 | ANYOF_BITMAP_SET(ret, value); | |
3839 | #else /* EBCDIC */ | |
ffbc6a93 | 3840 | for (value = 0; value < 256; value++) { |
3a3c4447 JH |
3841 | if (!isASCII(value)) |
3842 | ANYOF_BITMAP_SET(ret, value); | |
ffbc6a93 | 3843 | } |
1ba5c669 | 3844 | #endif /* EBCDIC */ |
73b437c8 | 3845 | } |
ffc61ed2 | 3846 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsASCII\n"); |
73b437c8 | 3847 | break; |
aaa51d5e JF |
3848 | case ANYOF_BLANK: |
3849 | if (LOC) | |
3850 | ANYOF_CLASS_SET(ret, ANYOF_BLANK); | |
3851 | else { | |
3852 | for (value = 0; value < 256; value++) | |
3853 | if (isBLANK(value)) | |
3854 | ANYOF_BITMAP_SET(ret, value); | |
3855 | } | |
ffc61ed2 | 3856 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsBlank\n"); |
aaa51d5e JF |
3857 | break; |
3858 | case ANYOF_NBLANK: | |
3859 | if (LOC) | |
3860 | ANYOF_CLASS_SET(ret, ANYOF_NBLANK); | |
3861 | else { | |
3862 | for (value = 0; value < 256; value++) | |
3863 | if (!isBLANK(value)) | |
3864 | ANYOF_BITMAP_SET(ret, value); | |
3865 | } | |
ffc61ed2 | 3866 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsBlank\n"); |
aaa51d5e | 3867 | break; |
73b437c8 JH |
3868 | case ANYOF_CNTRL: |
3869 | if (LOC) | |
936ed897 | 3870 | ANYOF_CLASS_SET(ret, ANYOF_CNTRL); |
73b437c8 JH |
3871 | else { |
3872 | for (value = 0; value < 256; value++) | |
3873 | if (isCNTRL(value)) | |
936ed897 | 3874 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3875 | } |
ffc61ed2 | 3876 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsCntrl\n"); |
73b437c8 JH |
3877 | break; |
3878 | case ANYOF_NCNTRL: | |
3879 | if (LOC) | |
936ed897 | 3880 | ANYOF_CLASS_SET(ret, ANYOF_NCNTRL); |
73b437c8 JH |
3881 | else { |
3882 | for (value = 0; value < 256; value++) | |
3883 | if (!isCNTRL(value)) | |
936ed897 | 3884 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3885 | } |
ffc61ed2 JH |
3886 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsCntrl\n"); |
3887 | break; | |
3888 | case ANYOF_DIGIT: | |
3889 | if (LOC) | |
3890 | ANYOF_CLASS_SET(ret, ANYOF_DIGIT); | |
3891 | else { | |
3892 | /* consecutive digits assumed */ | |
3893 | for (value = '0'; value <= '9'; value++) | |
3894 | ANYOF_BITMAP_SET(ret, value); | |
3895 | } | |
3896 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsDigit\n"); | |
3897 | break; | |
3898 | case ANYOF_NDIGIT: | |
3899 | if (LOC) | |
3900 | ANYOF_CLASS_SET(ret, ANYOF_NDIGIT); | |
3901 | else { | |
3902 | /* consecutive digits assumed */ | |
3903 | for (value = 0; value < '0'; value++) | |
3904 | ANYOF_BITMAP_SET(ret, value); | |
3905 | for (value = '9' + 1; value < 256; value++) | |
3906 | ANYOF_BITMAP_SET(ret, value); | |
3907 | } | |
3908 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsDigit\n"); | |
73b437c8 JH |
3909 | break; |
3910 | case ANYOF_GRAPH: | |
3911 | if (LOC) | |
936ed897 | 3912 | ANYOF_CLASS_SET(ret, ANYOF_GRAPH); |
73b437c8 JH |
3913 | else { |
3914 | for (value = 0; value < 256; value++) | |
3915 | if (isGRAPH(value)) | |
936ed897 | 3916 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3917 | } |
ffc61ed2 | 3918 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsGraph\n"); |
73b437c8 JH |
3919 | break; |
3920 | case ANYOF_NGRAPH: | |
3921 | if (LOC) | |
936ed897 | 3922 | ANYOF_CLASS_SET(ret, ANYOF_NGRAPH); |
73b437c8 JH |
3923 | else { |
3924 | for (value = 0; value < 256; value++) | |
3925 | if (!isGRAPH(value)) | |
936ed897 | 3926 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3927 | } |
ffc61ed2 | 3928 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsGraph\n"); |
73b437c8 JH |
3929 | break; |
3930 | case ANYOF_LOWER: | |
3931 | if (LOC) | |
936ed897 | 3932 | ANYOF_CLASS_SET(ret, ANYOF_LOWER); |
73b437c8 JH |
3933 | else { |
3934 | for (value = 0; value < 256; value++) | |
3935 | if (isLOWER(value)) | |
936ed897 | 3936 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3937 | } |
ffc61ed2 | 3938 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsLower\n"); |
73b437c8 JH |
3939 | break; |
3940 | case ANYOF_NLOWER: | |
3941 | if (LOC) | |
936ed897 | 3942 | ANYOF_CLASS_SET(ret, ANYOF_NLOWER); |
73b437c8 JH |
3943 | else { |
3944 | for (value = 0; value < 256; value++) | |
3945 | if (!isLOWER(value)) | |
936ed897 | 3946 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3947 | } |
ffc61ed2 | 3948 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsLower\n"); |
73b437c8 JH |
3949 | break; |
3950 | case ANYOF_PRINT: | |
3951 | if (LOC) | |
936ed897 | 3952 | ANYOF_CLASS_SET(ret, ANYOF_PRINT); |
73b437c8 JH |
3953 | else { |
3954 | for (value = 0; value < 256; value++) | |
3955 | if (isPRINT(value)) | |
936ed897 | 3956 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3957 | } |
ffc61ed2 | 3958 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsPrint\n"); |
73b437c8 JH |
3959 | break; |
3960 | case ANYOF_NPRINT: | |
3961 | if (LOC) | |
936ed897 | 3962 | ANYOF_CLASS_SET(ret, ANYOF_NPRINT); |
73b437c8 JH |
3963 | else { |
3964 | for (value = 0; value < 256; value++) | |
3965 | if (!isPRINT(value)) | |
936ed897 | 3966 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3967 | } |
ffc61ed2 | 3968 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsPrint\n"); |
73b437c8 | 3969 | break; |
aaa51d5e JF |
3970 | case ANYOF_PSXSPC: |
3971 | if (LOC) | |
3972 | ANYOF_CLASS_SET(ret, ANYOF_PSXSPC); | |
3973 | else { | |
3974 | for (value = 0; value < 256; value++) | |
3975 | if (isPSXSPC(value)) | |
3976 | ANYOF_BITMAP_SET(ret, value); | |
3977 | } | |
ffc61ed2 | 3978 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsSpace\n"); |
aaa51d5e JF |
3979 | break; |
3980 | case ANYOF_NPSXSPC: | |
3981 | if (LOC) | |
3982 | ANYOF_CLASS_SET(ret, ANYOF_NPSXSPC); | |
3983 | else { | |
3984 | for (value = 0; value < 256; value++) | |
3985 | if (!isPSXSPC(value)) | |
3986 | ANYOF_BITMAP_SET(ret, value); | |
3987 | } | |
ffc61ed2 | 3988 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsSpace\n"); |
aaa51d5e | 3989 | break; |
73b437c8 JH |
3990 | case ANYOF_PUNCT: |
3991 | if (LOC) | |
936ed897 | 3992 | ANYOF_CLASS_SET(ret, ANYOF_PUNCT); |
73b437c8 JH |
3993 | else { |
3994 | for (value = 0; value < 256; value++) | |
3995 | if (isPUNCT(value)) | |
936ed897 | 3996 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3997 | } |
ffc61ed2 | 3998 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsPunct\n"); |
73b437c8 JH |
3999 | break; |
4000 | case ANYOF_NPUNCT: | |
4001 | if (LOC) | |
936ed897 | 4002 | ANYOF_CLASS_SET(ret, ANYOF_NPUNCT); |
73b437c8 JH |
4003 | else { |
4004 | for (value = 0; value < 256; value++) | |
4005 | if (!isPUNCT(value)) | |
936ed897 | 4006 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 4007 | } |
ffc61ed2 JH |
4008 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsPunct\n"); |
4009 | break; | |
4010 | case ANYOF_SPACE: | |
4011 | if (LOC) | |
4012 | ANYOF_CLASS_SET(ret, ANYOF_SPACE); | |
4013 | else { | |
4014 | for (value = 0; value < 256; value++) | |
4015 | if (isSPACE(value)) | |
4016 | ANYOF_BITMAP_SET(ret, value); | |
4017 | } | |
4018 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsSpacePerl\n"); | |
4019 | break; | |
4020 | case ANYOF_NSPACE: | |
4021 | if (LOC) | |
4022 | ANYOF_CLASS_SET(ret, ANYOF_NSPACE); | |
4023 | else { | |
4024 | for (value = 0; value < 256; value++) | |
4025 | if (!isSPACE(value)) | |
4026 | ANYOF_BITMAP_SET(ret, value); | |
4027 | } | |
4028 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsSpacePerl\n"); | |
73b437c8 JH |
4029 | break; |
4030 | case ANYOF_UPPER: | |
4031 | if (LOC) | |
936ed897 | 4032 | ANYOF_CLASS_SET(ret, ANYOF_UPPER); |
73b437c8 JH |
4033 | else { |
4034 | for (value = 0; value < 256; value++) | |
4035 | if (isUPPER(value)) | |
936ed897 | 4036 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 4037 | } |
ffc61ed2 | 4038 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsUpper\n"); |
73b437c8 JH |
4039 | break; |
4040 | case ANYOF_NUPPER: | |
4041 | if (LOC) | |
936ed897 | 4042 | ANYOF_CLASS_SET(ret, ANYOF_NUPPER); |
73b437c8 JH |
4043 | else { |
4044 | for (value = 0; value < 256; value++) | |
4045 | if (!isUPPER(value)) | |
936ed897 | 4046 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 4047 | } |
ffc61ed2 | 4048 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsUpper\n"); |
73b437c8 JH |
4049 | break; |
4050 | case ANYOF_XDIGIT: | |
4051 | if (LOC) | |
936ed897 | 4052 | ANYOF_CLASS_SET(ret, ANYOF_XDIGIT); |
73b437c8 JH |
4053 | else { |
4054 | for (value = 0; value < 256; value++) | |
4055 | if (isXDIGIT(value)) | |
936ed897 | 4056 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 4057 | } |
ffc61ed2 | 4058 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsXDigit\n"); |
73b437c8 JH |
4059 | break; |
4060 | case ANYOF_NXDIGIT: | |
4061 | if (LOC) | |
936ed897 | 4062 | ANYOF_CLASS_SET(ret, ANYOF_NXDIGIT); |
73b437c8 JH |
4063 | else { |
4064 | for (value = 0; value < 256; value++) | |
4065 | if (!isXDIGIT(value)) | |
936ed897 | 4066 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 4067 | } |
ffc61ed2 | 4068 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsXDigit\n"); |
73b437c8 | 4069 | break; |
f81125e2 JP |
4070 | case ANYOF_MAX: |
4071 | /* this is to handle \p and \P */ | |
4072 | break; | |
73b437c8 | 4073 | default: |
b45f050a | 4074 | vFAIL("Invalid [::] class"); |
73b437c8 | 4075 | break; |
b8c5462f | 4076 | } |
b8c5462f | 4077 | if (LOC) |
936ed897 | 4078 | ANYOF_FLAGS(ret) |= ANYOF_CLASS; |
73b437c8 | 4079 | continue; |
a0d0e21e | 4080 | } |
ffc61ed2 JH |
4081 | } /* end of namedclass \blah */ |
4082 | ||
a0d0e21e | 4083 | if (range) { |
eb160463 | 4084 | if (prevvalue > (IV)value) /* b-a */ { |
b45f050a | 4085 | Simple_vFAIL4("Invalid [] range \"%*.*s\"", |
830247a4 IZ |
4086 | RExC_parse - rangebegin, |
4087 | RExC_parse - rangebegin, | |
b45f050a | 4088 | rangebegin); |
3568d838 | 4089 | range = 0; /* not a valid range */ |
73b437c8 | 4090 | } |
a0d0e21e LW |
4091 | } |
4092 | else { | |
3568d838 | 4093 | prevvalue = value; /* save the beginning of the range */ |
830247a4 IZ |
4094 | if (*RExC_parse == '-' && RExC_parse+1 < RExC_end && |
4095 | RExC_parse[1] != ']') { | |
4096 | RExC_parse++; | |
ffc61ed2 JH |
4097 | |
4098 | /* a bad range like \w-, [:word:]- ? */ | |
4099 | if (namedclass > OOB_NAMEDCLASS) { | |
e476b1b5 | 4100 | if (ckWARN(WARN_REGEXP)) |
830247a4 | 4101 | vWARN4(RExC_parse, |
b45f050a | 4102 | "False [] range \"%*.*s\"", |
830247a4 IZ |
4103 | RExC_parse - rangebegin, |
4104 | RExC_parse - rangebegin, | |
b45f050a | 4105 | rangebegin); |
73b437c8 | 4106 | if (!SIZE_ONLY) |
936ed897 | 4107 | ANYOF_BITMAP_SET(ret, '-'); |
73b437c8 | 4108 | } else |
ffc61ed2 JH |
4109 | range = 1; /* yeah, it's a range! */ |
4110 | continue; /* but do it the next time */ | |
a0d0e21e | 4111 | } |
a687059c | 4112 | } |
ffc61ed2 | 4113 | |
93733859 | 4114 | /* now is the next time */ |
ae5c130c | 4115 | if (!SIZE_ONLY) { |
3568d838 JH |
4116 | IV i; |
4117 | ||
4118 | if (prevvalue < 256) { | |
4119 | IV ceilvalue = value < 256 ? value : 255; | |
4120 | ||
4121 | #ifdef EBCDIC | |
1b2d223b JH |
4122 | /* In EBCDIC [\x89-\x91] should include |
4123 | * the \x8e but [i-j] should not. */ | |
4124 | if (literal_endpoint == 2 && | |
4125 | ((isLOWER(prevvalue) && isLOWER(ceilvalue)) || | |
4126 | (isUPPER(prevvalue) && isUPPER(ceilvalue)))) | |
ffc61ed2 | 4127 | { |
3568d838 JH |
4128 | if (isLOWER(prevvalue)) { |
4129 | for (i = prevvalue; i <= ceilvalue; i++) | |
ffc61ed2 JH |
4130 | if (isLOWER(i)) |
4131 | ANYOF_BITMAP_SET(ret, i); | |
4132 | } else { | |
3568d838 | 4133 | for (i = prevvalue; i <= ceilvalue; i++) |
ffc61ed2 JH |
4134 | if (isUPPER(i)) |
4135 | ANYOF_BITMAP_SET(ret, i); | |
4136 | } | |
8ada0baa | 4137 | } |
ffc61ed2 | 4138 | else |
8ada0baa | 4139 | #endif |
a5961de5 JH |
4140 | for (i = prevvalue; i <= ceilvalue; i++) |
4141 | ANYOF_BITMAP_SET(ret, i); | |
3568d838 | 4142 | } |
a5961de5 | 4143 | if (value > 255 || UTF) { |
b08decb7 JH |
4144 | UV prevnatvalue = NATIVE_TO_UNI(prevvalue); |
4145 | UV natvalue = NATIVE_TO_UNI(value); | |
4146 | ||
ffc61ed2 | 4147 | ANYOF_FLAGS(ret) |= ANYOF_UNICODE; |
b08decb7 | 4148 | if (prevnatvalue < natvalue) { /* what about > ? */ |
ffc61ed2 | 4149 | Perl_sv_catpvf(aTHX_ listsv, "%04"UVxf"\t%04"UVxf"\n", |
b08decb7 JH |
4150 | prevnatvalue, natvalue); |
4151 | } | |
4152 | else if (prevnatvalue == natvalue) { | |
4153 | Perl_sv_catpvf(aTHX_ listsv, "%04"UVxf"\n", natvalue); | |
09091399 | 4154 | if (FOLD) { |
254ba52a JH |
4155 | U8 foldbuf[UTF8_MAXLEN_FOLD+1]; |
4156 | STRLEN foldlen; | |
2f3bf011 | 4157 | UV f = to_uni_fold(natvalue, foldbuf, &foldlen); |
254ba52a | 4158 | |
c840d2a2 JH |
4159 | /* If folding and foldable and a single |
4160 | * character, insert also the folded version | |
4161 | * to the charclass. */ | |
9e55ce06 | 4162 | if (f != value) { |
eb160463 | 4163 | if (foldlen == (STRLEN)UNISKIP(f)) |
9e55ce06 JH |
4164 | Perl_sv_catpvf(aTHX_ listsv, |
4165 | "%04"UVxf"\n", f); | |
4166 | else { | |
4167 | /* Any multicharacter foldings | |
4168 | * require the following transform: | |
4169 | * [ABCDEF] -> (?:[ABCabcDEFd]|pq|rst) | |
4170 | * where E folds into "pq" and F folds | |
4171 | * into "rst", all other characters | |
4172 | * fold to single characters. We save | |
4173 | * away these multicharacter foldings, | |
4174 | * to be later saved as part of the | |
4175 | * additional "s" data. */ | |
4176 | SV *sv; | |
4177 | ||
4178 | if (!unicode_alternate) | |
4179 | unicode_alternate = newAV(); | |
4180 | sv = newSVpvn((char*)foldbuf, foldlen); | |
4181 | SvUTF8_on(sv); | |
4182 | av_push(unicode_alternate, sv); | |
4183 | } | |
4184 | } | |
254ba52a | 4185 | |
60a8b682 JH |
4186 | /* If folding and the value is one of the Greek |
4187 | * sigmas insert a few more sigmas to make the | |
4188 | * folding rules of the sigmas to work right. | |
4189 | * Note that not all the possible combinations | |
4190 | * are handled here: some of them are handled | |
9e55ce06 JH |
4191 | * by the standard folding rules, and some of |
4192 | * them (literal or EXACTF cases) are handled | |
4193 | * during runtime in regexec.c:S_find_byclass(). */ | |
09091399 JH |
4194 | if (value == UNICODE_GREEK_SMALL_LETTER_FINAL_SIGMA) { |
4195 | Perl_sv_catpvf(aTHX_ listsv, "%04"UVxf"\n", | |
eb050b28 | 4196 | (UV)UNICODE_GREEK_CAPITAL_LETTER_SIGMA); |
09091399 | 4197 | Perl_sv_catpvf(aTHX_ listsv, "%04"UVxf"\n", |
eb050b28 | 4198 | (UV)UNICODE_GREEK_SMALL_LETTER_SIGMA); |
09091399 JH |
4199 | } |
4200 | else if (value == UNICODE_GREEK_CAPITAL_LETTER_SIGMA) | |
4201 | Perl_sv_catpvf(aTHX_ listsv, "%04"UVxf"\n", | |
eb050b28 | 4202 | (UV)UNICODE_GREEK_SMALL_LETTER_SIGMA); |
09091399 JH |
4203 | } |
4204 | } | |
ffc61ed2 | 4205 | } |
1b2d223b JH |
4206 | #ifdef EBCDIC |
4207 | literal_endpoint = 0; | |
4208 | #endif | |
8ada0baa | 4209 | } |
ffc61ed2 JH |
4210 | |
4211 | range = 0; /* this range (if it was one) is done now */ | |
a0d0e21e | 4212 | } |
ffc61ed2 | 4213 | |
936ed897 | 4214 | if (need_class) { |
4f66b38d | 4215 | ANYOF_FLAGS(ret) |= ANYOF_LARGE; |
936ed897 | 4216 | if (SIZE_ONLY) |
830247a4 | 4217 | RExC_size += ANYOF_CLASS_ADD_SKIP; |
936ed897 | 4218 | else |
830247a4 | 4219 | RExC_emit += ANYOF_CLASS_ADD_SKIP; |
936ed897 | 4220 | } |
ffc61ed2 | 4221 | |
ae5c130c | 4222 | /* optimize case-insensitive simple patterns (e.g. /[a-z]/i) */ |
b8c5462f | 4223 | if (!SIZE_ONLY && |
ffc61ed2 | 4224 | /* If the only flag is folding (plus possibly inversion). */ |
516a5887 JH |
4225 | ((ANYOF_FLAGS(ret) & (ANYOF_FLAGS_ALL ^ ANYOF_INVERT)) == ANYOF_FOLD) |
4226 | ) { | |
a0ed51b3 | 4227 | for (value = 0; value < 256; ++value) { |
936ed897 | 4228 | if (ANYOF_BITMAP_TEST(ret, value)) { |
eb160463 | 4229 | UV fold = PL_fold[value]; |
ffc61ed2 JH |
4230 | |
4231 | if (fold != value) | |
4232 | ANYOF_BITMAP_SET(ret, fold); | |
ae5c130c GS |
4233 | } |
4234 | } | |
936ed897 | 4235 | ANYOF_FLAGS(ret) &= ~ANYOF_FOLD; |
ae5c130c | 4236 | } |
ffc61ed2 | 4237 | |
ae5c130c | 4238 | /* optimize inverted simple patterns (e.g. [^a-z]) */ |
3568d838 | 4239 | if (!SIZE_ONLY && optimize_invert && |
ffc61ed2 JH |
4240 | /* If the only flag is inversion. */ |
4241 | (ANYOF_FLAGS(ret) & ANYOF_FLAGS_ALL) == ANYOF_INVERT) { | |
b8c5462f | 4242 | for (value = 0; value < ANYOF_BITMAP_SIZE; ++value) |
936ed897 | 4243 | ANYOF_BITMAP(ret)[value] ^= ANYOF_FLAGS_ALL; |
1aa99e6b | 4244 | ANYOF_FLAGS(ret) = ANYOF_UNICODE_ALL; |
ae5c130c | 4245 | } |
a0d0e21e | 4246 | |
b81d288d | 4247 | if (!SIZE_ONLY) { |
fde631ed | 4248 | AV *av = newAV(); |
ffc61ed2 JH |
4249 | SV *rv; |
4250 | ||
9e55ce06 | 4251 | /* The 0th element stores the character class description |
6a0407ee | 4252 | * in its textual form: used later (regexec.c:Perl_regclass_swash()) |
9e55ce06 JH |
4253 | * to initialize the appropriate swash (which gets stored in |
4254 | * the 1st element), and also useful for dumping the regnode. | |
4255 | * The 2nd element stores the multicharacter foldings, | |
6a0407ee | 4256 | * used later (regexec.c:S_reginclass()). */ |
ffc61ed2 JH |
4257 | av_store(av, 0, listsv); |
4258 | av_store(av, 1, NULL); | |
9e55ce06 | 4259 | av_store(av, 2, (SV*)unicode_alternate); |
ffc61ed2 | 4260 | rv = newRV_noinc((SV*)av); |
19860706 | 4261 | n = add_data(pRExC_state, 1, "s"); |
830247a4 | 4262 | RExC_rx->data->data[n] = (void*)rv; |
ffc61ed2 | 4263 | ARG_SET(ret, n); |
a0ed51b3 LW |
4264 | } |
4265 | ||
4266 | return ret; | |
4267 | } | |
4268 | ||
76e3520e | 4269 | STATIC char* |
830247a4 | 4270 | S_nextchar(pTHX_ RExC_state_t *pRExC_state) |
a0d0e21e | 4271 | { |
830247a4 | 4272 | char* retval = RExC_parse++; |
a0d0e21e | 4273 | |
4633a7c4 | 4274 | for (;;) { |
830247a4 IZ |
4275 | if (*RExC_parse == '(' && RExC_parse[1] == '?' && |
4276 | RExC_parse[2] == '#') { | |
e994fd66 AE |
4277 | while (*RExC_parse != ')') { |
4278 | if (RExC_parse == RExC_end) | |
4279 | FAIL("Sequence (?#... not terminated"); | |
830247a4 | 4280 | RExC_parse++; |
e994fd66 | 4281 | } |
830247a4 | 4282 | RExC_parse++; |
4633a7c4 LW |
4283 | continue; |
4284 | } | |
e2509266 | 4285 | if (RExC_flags & PMf_EXTENDED) { |
830247a4 IZ |
4286 | if (isSPACE(*RExC_parse)) { |
4287 | RExC_parse++; | |
748a9306 LW |
4288 | continue; |
4289 | } | |
830247a4 | 4290 | else if (*RExC_parse == '#') { |
e994fd66 AE |
4291 | while (RExC_parse < RExC_end) |
4292 | if (*RExC_parse++ == '\n') break; | |
748a9306 LW |
4293 | continue; |
4294 | } | |
748a9306 | 4295 | } |
4633a7c4 | 4296 | return retval; |
a0d0e21e | 4297 | } |
a687059c LW |
4298 | } |
4299 | ||
4300 | /* | |
c277df42 | 4301 | - reg_node - emit a node |
a0d0e21e | 4302 | */ |
76e3520e | 4303 | STATIC regnode * /* Location. */ |
830247a4 | 4304 | S_reg_node(pTHX_ RExC_state_t *pRExC_state, U8 op) |
a687059c | 4305 | { |
c277df42 IZ |
4306 | register regnode *ret; |
4307 | register regnode *ptr; | |
a687059c | 4308 | |
830247a4 | 4309 | ret = RExC_emit; |
c277df42 | 4310 | if (SIZE_ONLY) { |
830247a4 IZ |
4311 | SIZE_ALIGN(RExC_size); |
4312 | RExC_size += 1; | |
a0d0e21e LW |
4313 | return(ret); |
4314 | } | |
a687059c | 4315 | |
c277df42 | 4316 | NODE_ALIGN_FILL(ret); |
a0d0e21e | 4317 | ptr = ret; |
c277df42 | 4318 | FILL_ADVANCE_NODE(ptr, op); |
fac92740 | 4319 | if (RExC_offsets) { /* MJD */ |
ccb2c380 | 4320 | MJD_OFFSET_DEBUG(("%s:%u: (op %s) %s %u <- %u (len %u) (max %u).\n", |
fac92740 MJD |
4321 | "reg_node", __LINE__, |
4322 | reg_name[op], | |
4323 | RExC_emit - RExC_emit_start > RExC_offsets[0] | |
4324 | ? "Overwriting end of array!\n" : "OK", | |
4325 | RExC_emit - RExC_emit_start, | |
4326 | RExC_parse - RExC_start, | |
4327 | RExC_offsets[0])); | |
ccb2c380 | 4328 | Set_Node_Offset(RExC_emit, RExC_parse + (op == END)); |
fac92740 MJD |
4329 | } |
4330 | ||
830247a4 | 4331 | RExC_emit = ptr; |
a687059c | 4332 | |
a0d0e21e | 4333 | return(ret); |
a687059c LW |
4334 | } |
4335 | ||
4336 | /* | |
a0d0e21e LW |
4337 | - reganode - emit a node with an argument |
4338 | */ | |
76e3520e | 4339 | STATIC regnode * /* Location. */ |
830247a4 | 4340 | S_reganode(pTHX_ RExC_state_t *pRExC_state, U8 op, U32 arg) |
fe14fcc3 | 4341 | { |
c277df42 IZ |
4342 | register regnode *ret; |
4343 | register regnode *ptr; | |
fe14fcc3 | 4344 | |
830247a4 | 4345 | ret = RExC_emit; |
c277df42 | 4346 | if (SIZE_ONLY) { |
830247a4 IZ |
4347 | SIZE_ALIGN(RExC_size); |
4348 | RExC_size += 2; | |
a0d0e21e LW |
4349 | return(ret); |
4350 | } | |
fe14fcc3 | 4351 | |
c277df42 | 4352 | NODE_ALIGN_FILL(ret); |
a0d0e21e | 4353 | ptr = ret; |
c277df42 | 4354 | FILL_ADVANCE_NODE_ARG(ptr, op, arg); |
fac92740 | 4355 | if (RExC_offsets) { /* MJD */ |
ccb2c380 | 4356 | MJD_OFFSET_DEBUG(("%s(%d): (op %s) %s %u <- %u (max %u).\n", |
fac92740 | 4357 | "reganode", |
ccb2c380 MP |
4358 | __LINE__, |
4359 | reg_name[op], | |
fac92740 MJD |
4360 | RExC_emit - RExC_emit_start > RExC_offsets[0] ? |
4361 | "Overwriting end of array!\n" : "OK", | |
4362 | RExC_emit - RExC_emit_start, | |
4363 | RExC_parse - RExC_start, | |
4364 | RExC_offsets[0])); | |
ccb2c380 | 4365 | Set_Cur_Node_Offset; |
fac92740 MJD |
4366 | } |
4367 | ||
830247a4 | 4368 | RExC_emit = ptr; |
fe14fcc3 | 4369 | |
a0d0e21e | 4370 | return(ret); |
fe14fcc3 LW |
4371 | } |
4372 | ||
4373 | /* | |
cd439c50 | 4374 | - reguni - emit (if appropriate) a Unicode character |
a0ed51b3 LW |
4375 | */ |
4376 | STATIC void | |
830247a4 | 4377 | S_reguni(pTHX_ RExC_state_t *pRExC_state, UV uv, char* s, STRLEN* lenp) |
a0ed51b3 | 4378 | { |
5e12f4fb | 4379 | *lenp = SIZE_ONLY ? UNISKIP(uv) : (uvchr_to_utf8((U8*)s, uv) - (U8*)s); |
a0ed51b3 LW |
4380 | } |
4381 | ||
4382 | /* | |
a0d0e21e LW |
4383 | - reginsert - insert an operator in front of already-emitted operand |
4384 | * | |
4385 | * Means relocating the operand. | |
4386 | */ | |
76e3520e | 4387 | STATIC void |
830247a4 | 4388 | S_reginsert(pTHX_ RExC_state_t *pRExC_state, U8 op, regnode *opnd) |
a687059c | 4389 | { |
c277df42 IZ |
4390 | register regnode *src; |
4391 | register regnode *dst; | |
4392 | register regnode *place; | |
4393 | register int offset = regarglen[(U8)op]; | |
b81d288d | 4394 | |
22c35a8c | 4395 | /* (PL_regkind[(U8)op] == CURLY ? EXTRA_STEP_2ARGS : 0); */ |
c277df42 IZ |
4396 | |
4397 | if (SIZE_ONLY) { | |
830247a4 | 4398 | RExC_size += NODE_STEP_REGNODE + offset; |
a0d0e21e LW |
4399 | return; |
4400 | } | |
a687059c | 4401 | |
830247a4 IZ |
4402 | src = RExC_emit; |
4403 | RExC_emit += NODE_STEP_REGNODE + offset; | |
4404 | dst = RExC_emit; | |
fac92740 | 4405 | while (src > opnd) { |
c277df42 | 4406 | StructCopy(--src, --dst, regnode); |
fac92740 | 4407 | if (RExC_offsets) { /* MJD 20010112 */ |
ccb2c380 | 4408 | MJD_OFFSET_DEBUG(("%s(%d): (op %s) %s copy %u -> %u (max %u).\n", |
fac92740 | 4409 | "reg_insert", |
ccb2c380 MP |
4410 | __LINE__, |
4411 | reg_name[op], | |
fac92740 MJD |
4412 | dst - RExC_emit_start > RExC_offsets[0] |
4413 | ? "Overwriting end of array!\n" : "OK", | |
4414 | src - RExC_emit_start, | |
4415 | dst - RExC_emit_start, | |
4416 | RExC_offsets[0])); | |
ccb2c380 MP |
4417 | Set_Node_Offset_To_R(dst-RExC_emit_start, Node_Offset(src)); |
4418 | Set_Node_Length_To_R(dst-RExC_emit_start, Node_Length(src)); | |
fac92740 MJD |
4419 | } |
4420 | } | |
4421 | ||
a0d0e21e LW |
4422 | |
4423 | place = opnd; /* Op node, where operand used to be. */ | |
fac92740 | 4424 | if (RExC_offsets) { /* MJD */ |
ccb2c380 | 4425 | MJD_OFFSET_DEBUG(("%s(%d): (op %s) %s %u <- %u (max %u).\n", |
fac92740 | 4426 | "reginsert", |
ccb2c380 MP |
4427 | __LINE__, |
4428 | reg_name[op], | |
fac92740 MJD |
4429 | place - RExC_emit_start > RExC_offsets[0] |
4430 | ? "Overwriting end of array!\n" : "OK", | |
4431 | place - RExC_emit_start, | |
4432 | RExC_parse - RExC_start, | |
4433 | RExC_offsets[0])); | |
ccb2c380 | 4434 | Set_Node_Offset(place, RExC_parse); |
45948336 | 4435 | Set_Node_Length(place, 1); |
fac92740 | 4436 | } |
c277df42 IZ |
4437 | src = NEXTOPER(place); |
4438 | FILL_ADVANCE_NODE(place, op); | |
4439 | Zero(src, offset, regnode); | |
a687059c LW |
4440 | } |
4441 | ||
4442 | /* | |
c277df42 | 4443 | - regtail - set the next-pointer at the end of a node chain of p to val. |
a0d0e21e | 4444 | */ |
76e3520e | 4445 | STATIC void |
830247a4 | 4446 | S_regtail(pTHX_ RExC_state_t *pRExC_state, regnode *p, regnode *val) |
a687059c | 4447 | { |
c277df42 IZ |
4448 | register regnode *scan; |
4449 | register regnode *temp; | |
a0d0e21e | 4450 | |
c277df42 | 4451 | if (SIZE_ONLY) |
a0d0e21e LW |
4452 | return; |
4453 | ||
4454 | /* Find last node. */ | |
4455 | scan = p; | |
4456 | for (;;) { | |
4457 | temp = regnext(scan); | |
4458 | if (temp == NULL) | |
4459 | break; | |
4460 | scan = temp; | |
4461 | } | |
a687059c | 4462 | |
c277df42 IZ |
4463 | if (reg_off_by_arg[OP(scan)]) { |
4464 | ARG_SET(scan, val - scan); | |
a0ed51b3 LW |
4465 | } |
4466 | else { | |
c277df42 IZ |
4467 | NEXT_OFF(scan) = val - scan; |
4468 | } | |
a687059c LW |
4469 | } |
4470 | ||
4471 | /* | |
a0d0e21e LW |
4472 | - regoptail - regtail on operand of first argument; nop if operandless |
4473 | */ | |
76e3520e | 4474 | STATIC void |
830247a4 | 4475 | S_regoptail(pTHX_ RExC_state_t *pRExC_state, regnode *p, regnode *val) |
a687059c | 4476 | { |
a0d0e21e | 4477 | /* "Operandless" and "op != BRANCH" are synonymous in practice. */ |
c277df42 IZ |
4478 | if (p == NULL || SIZE_ONLY) |
4479 | return; | |
22c35a8c | 4480 | if (PL_regkind[(U8)OP(p)] == BRANCH) { |
830247a4 | 4481 | regtail(pRExC_state, NEXTOPER(p), val); |
a0ed51b3 | 4482 | } |
22c35a8c | 4483 | else if ( PL_regkind[(U8)OP(p)] == BRANCHJ) { |
830247a4 | 4484 | regtail(pRExC_state, NEXTOPER(NEXTOPER(p)), val); |
a0ed51b3 LW |
4485 | } |
4486 | else | |
a0d0e21e | 4487 | return; |
a687059c LW |
4488 | } |
4489 | ||
4490 | /* | |
4491 | - regcurly - a little FSA that accepts {\d+,?\d*} | |
4492 | */ | |
79072805 | 4493 | STATIC I32 |
cea2e8a9 | 4494 | S_regcurly(pTHX_ register char *s) |
a687059c LW |
4495 | { |
4496 | if (*s++ != '{') | |
4497 | return FALSE; | |
f0fcb552 | 4498 | if (!isDIGIT(*s)) |
a687059c | 4499 | return FALSE; |
f0fcb552 | 4500 | while (isDIGIT(*s)) |
a687059c LW |
4501 | s++; |
4502 | if (*s == ',') | |
4503 | s++; | |
f0fcb552 | 4504 | while (isDIGIT(*s)) |
a687059c LW |
4505 | s++; |
4506 | if (*s != '}') | |
4507 | return FALSE; | |
4508 | return TRUE; | |
4509 | } | |
4510 | ||
a687059c | 4511 | |
8fa7f367 JH |
4512 | #ifdef DEBUGGING |
4513 | ||
76e3520e | 4514 | STATIC regnode * |
cea2e8a9 | 4515 | S_dumpuntil(pTHX_ regnode *start, regnode *node, regnode *last, SV* sv, I32 l) |
c277df42 | 4516 | { |
f248d071 | 4517 | register U8 op = EXACT; /* Arbitrary non-END op. */ |
155aba94 | 4518 | register regnode *next; |
c277df42 IZ |
4519 | |
4520 | while (op != END && (!last || node < last)) { | |
4521 | /* While that wasn't END last time... */ | |
4522 | ||
4523 | NODE_ALIGN(node); | |
4524 | op = OP(node); | |
4525 | if (op == CLOSE) | |
4526 | l--; | |
4527 | next = regnext(node); | |
4528 | /* Where, what. */ | |
4529 | if (OP(node) == OPTIMIZED) | |
4530 | goto after_print; | |
4531 | regprop(sv, node); | |
b900a521 | 4532 | PerlIO_printf(Perl_debug_log, "%4"IVdf":%*s%s", (IV)(node - start), |
f1dbda3d | 4533 | (int)(2*l + 1), "", SvPVX(sv)); |
c277df42 IZ |
4534 | if (next == NULL) /* Next ptr. */ |
4535 | PerlIO_printf(Perl_debug_log, "(0)"); | |
b81d288d | 4536 | else |
b900a521 | 4537 | PerlIO_printf(Perl_debug_log, "(%"IVdf")", (IV)(next - start)); |
c277df42 IZ |
4538 | (void)PerlIO_putc(Perl_debug_log, '\n'); |
4539 | after_print: | |
22c35a8c | 4540 | if (PL_regkind[(U8)op] == BRANCHJ) { |
b81d288d AB |
4541 | register regnode *nnode = (OP(next) == LONGJMP |
4542 | ? regnext(next) | |
c277df42 IZ |
4543 | : next); |
4544 | if (last && nnode > last) | |
4545 | nnode = last; | |
4546 | node = dumpuntil(start, NEXTOPER(NEXTOPER(node)), nnode, sv, l + 1); | |
a0ed51b3 | 4547 | } |
22c35a8c | 4548 | else if (PL_regkind[(U8)op] == BRANCH) { |
c277df42 | 4549 | node = dumpuntil(start, NEXTOPER(node), next, sv, l + 1); |
a0ed51b3 LW |
4550 | } |
4551 | else if ( op == CURLY) { /* `next' might be very big: optimizer */ | |
c277df42 IZ |
4552 | node = dumpuntil(start, NEXTOPER(node) + EXTRA_STEP_2ARGS, |
4553 | NEXTOPER(node) + EXTRA_STEP_2ARGS + 1, sv, l + 1); | |
a0ed51b3 | 4554 | } |
22c35a8c | 4555 | else if (PL_regkind[(U8)op] == CURLY && op != CURLYX) { |
c277df42 IZ |
4556 | node = dumpuntil(start, NEXTOPER(node) + EXTRA_STEP_2ARGS, |
4557 | next, sv, l + 1); | |
a0ed51b3 LW |
4558 | } |
4559 | else if ( op == PLUS || op == STAR) { | |
c277df42 | 4560 | node = dumpuntil(start, NEXTOPER(node), NEXTOPER(node) + 1, sv, l + 1); |
a0ed51b3 LW |
4561 | } |
4562 | else if (op == ANYOF) { | |
4f66b38d HS |
4563 | /* arglen 1 + class block */ |
4564 | node += 1 + ((ANYOF_FLAGS(node) & ANYOF_LARGE) | |
4565 | ? ANYOF_CLASS_SKIP : ANYOF_SKIP); | |
4566 | node = NEXTOPER(node); | |
a0ed51b3 | 4567 | } |
22c35a8c | 4568 | else if (PL_regkind[(U8)op] == EXACT) { |
c277df42 | 4569 | /* Literal string, where present. */ |
cd439c50 | 4570 | node += NODE_SZ_STR(node) - 1; |
c277df42 | 4571 | node = NEXTOPER(node); |
a0ed51b3 LW |
4572 | } |
4573 | else { | |
c277df42 IZ |
4574 | node = NEXTOPER(node); |
4575 | node += regarglen[(U8)op]; | |
4576 | } | |
4577 | if (op == CURLYX || op == OPEN) | |
4578 | l++; | |
4579 | else if (op == WHILEM) | |
4580 | l--; | |
4581 | } | |
4582 | return node; | |
4583 | } | |
4584 | ||
8fa7f367 JH |
4585 | #endif /* DEBUGGING */ |
4586 | ||
a687059c | 4587 | /* |
fd181c75 | 4588 | - regdump - dump a regexp onto Perl_debug_log in vaguely comprehensible form |
a687059c LW |
4589 | */ |
4590 | void | |
864dbfa3 | 4591 | Perl_regdump(pTHX_ regexp *r) |
a687059c | 4592 | { |
35ff7856 | 4593 | #ifdef DEBUGGING |
46fc3d4c | 4594 | SV *sv = sv_newmortal(); |
a687059c | 4595 | |
c277df42 | 4596 | (void)dumpuntil(r->program, r->program + 1, NULL, sv, 0); |
a0d0e21e LW |
4597 | |
4598 | /* Header fields of interest. */ | |
c277df42 | 4599 | if (r->anchored_substr) |
7b0972df | 4600 | PerlIO_printf(Perl_debug_log, |
b81d288d | 4601 | "anchored `%s%.*s%s'%s at %"IVdf" ", |
3280af22 | 4602 | PL_colors[0], |
7b0972df | 4603 | (int)(SvCUR(r->anchored_substr) - (SvTAIL(r->anchored_substr)!=0)), |
b81d288d | 4604 | SvPVX(r->anchored_substr), |
3280af22 | 4605 | PL_colors[1], |
c277df42 | 4606 | SvTAIL(r->anchored_substr) ? "$" : "", |
7b0972df | 4607 | (IV)r->anchored_offset); |
33b8afdf JH |
4608 | else if (r->anchored_utf8) |
4609 | PerlIO_printf(Perl_debug_log, | |
4610 | "anchored utf8 `%s%.*s%s'%s at %"IVdf" ", | |
4611 | PL_colors[0], | |
4612 | (int)(SvCUR(r->anchored_utf8) - (SvTAIL(r->anchored_utf8)!=0)), | |
4613 | SvPVX(r->anchored_utf8), | |
4614 | PL_colors[1], | |
4615 | SvTAIL(r->anchored_utf8) ? "$" : "", | |
4616 | (IV)r->anchored_offset); | |
c277df42 | 4617 | if (r->float_substr) |
7b0972df | 4618 | PerlIO_printf(Perl_debug_log, |
b81d288d | 4619 | "floating `%s%.*s%s'%s at %"IVdf"..%"UVuf" ", |
3280af22 | 4620 | PL_colors[0], |
b81d288d | 4621 | (int)(SvCUR(r->float_substr) - (SvTAIL(r->float_substr)!=0)), |
2c2d71f5 | 4622 | SvPVX(r->float_substr), |
3280af22 | 4623 | PL_colors[1], |
c277df42 | 4624 | SvTAIL(r->float_substr) ? "$" : "", |
7b0972df | 4625 | (IV)r->float_min_offset, (UV)r->float_max_offset); |
33b8afdf JH |
4626 | else if (r->float_utf8) |
4627 | PerlIO_printf(Perl_debug_log, | |
4628 | "floating utf8 `%s%.*s%s'%s at %"IVdf"..%"UVuf" ", | |
4629 | PL_colors[0], | |
4630 | (int)(SvCUR(r->float_utf8) - (SvTAIL(r->float_utf8)!=0)), | |
4631 | SvPVX(r->float_utf8), | |
4632 | PL_colors[1], | |
4633 | SvTAIL(r->float_utf8) ? "$" : "", | |
4634 | (IV)r->float_min_offset, (UV)r->float_max_offset); | |
4635 | if (r->check_substr || r->check_utf8) | |
b81d288d AB |
4636 | PerlIO_printf(Perl_debug_log, |
4637 | r->check_substr == r->float_substr | |
33b8afdf | 4638 | && r->check_utf8 == r->float_utf8 |
c277df42 IZ |
4639 | ? "(checking floating" : "(checking anchored"); |
4640 | if (r->reganch & ROPT_NOSCAN) | |
4641 | PerlIO_printf(Perl_debug_log, " noscan"); | |
4642 | if (r->reganch & ROPT_CHECK_ALL) | |
4643 | PerlIO_printf(Perl_debug_log, " isall"); | |
33b8afdf | 4644 | if (r->check_substr || r->check_utf8) |
c277df42 IZ |
4645 | PerlIO_printf(Perl_debug_log, ") "); |
4646 | ||
46fc3d4c | 4647 | if (r->regstclass) { |
4648 | regprop(sv, r->regstclass); | |
4649 | PerlIO_printf(Perl_debug_log, "stclass `%s' ", SvPVX(sv)); | |
4650 | } | |
774d564b | 4651 | if (r->reganch & ROPT_ANCH) { |
4652 | PerlIO_printf(Perl_debug_log, "anchored"); | |
4653 | if (r->reganch & ROPT_ANCH_BOL) | |
4654 | PerlIO_printf(Perl_debug_log, "(BOL)"); | |
c277df42 IZ |
4655 | if (r->reganch & ROPT_ANCH_MBOL) |
4656 | PerlIO_printf(Perl_debug_log, "(MBOL)"); | |
cad2e5aa JH |
4657 | if (r->reganch & ROPT_ANCH_SBOL) |
4658 | PerlIO_printf(Perl_debug_log, "(SBOL)"); | |
774d564b | 4659 | if (r->reganch & ROPT_ANCH_GPOS) |
4660 | PerlIO_printf(Perl_debug_log, "(GPOS)"); | |
4661 | PerlIO_putc(Perl_debug_log, ' '); | |
4662 | } | |
c277df42 IZ |
4663 | if (r->reganch & ROPT_GPOS_SEEN) |
4664 | PerlIO_printf(Perl_debug_log, "GPOS "); | |
a0d0e21e | 4665 | if (r->reganch & ROPT_SKIP) |
760ac839 | 4666 | PerlIO_printf(Perl_debug_log, "plus "); |
a0d0e21e | 4667 | if (r->reganch & ROPT_IMPLICIT) |
760ac839 | 4668 | PerlIO_printf(Perl_debug_log, "implicit "); |
760ac839 | 4669 | PerlIO_printf(Perl_debug_log, "minlen %ld ", (long) r->minlen); |
ce862d02 IZ |
4670 | if (r->reganch & ROPT_EVAL_SEEN) |
4671 | PerlIO_printf(Perl_debug_log, "with eval "); | |
760ac839 | 4672 | PerlIO_printf(Perl_debug_log, "\n"); |
fac92740 MJD |
4673 | if (r->offsets) { |
4674 | U32 i; | |
4675 | U32 len = r->offsets[0]; | |
392fbf5d | 4676 | PerlIO_printf(Perl_debug_log, "Offsets: [%"UVuf"]\n\t", (UV)r->offsets[0]); |
fac92740 | 4677 | for (i = 1; i <= len; i++) |
392fbf5d RB |
4678 | PerlIO_printf(Perl_debug_log, "%"UVuf"[%"UVuf"] ", |
4679 | (UV)r->offsets[i*2-1], | |
4680 | (UV)r->offsets[i*2]); | |
fac92740 MJD |
4681 | PerlIO_printf(Perl_debug_log, "\n"); |
4682 | } | |
17c3b450 | 4683 | #endif /* DEBUGGING */ |
a687059c LW |
4684 | } |
4685 | ||
8fa7f367 JH |
4686 | #ifdef DEBUGGING |
4687 | ||
653099ff GS |
4688 | STATIC void |
4689 | S_put_byte(pTHX_ SV *sv, int c) | |
4690 | { | |
7be5a6cf | 4691 | if (isCNTRL(c) || c == 255 || !isPRINT(c)) |
653099ff GS |
4692 | Perl_sv_catpvf(aTHX_ sv, "\\%o", c); |
4693 | else if (c == '-' || c == ']' || c == '\\' || c == '^') | |
4694 | Perl_sv_catpvf(aTHX_ sv, "\\%c", c); | |
4695 | else | |
4696 | Perl_sv_catpvf(aTHX_ sv, "%c", c); | |
4697 | } | |
4698 | ||
8fa7f367 JH |
4699 | #endif /* DEBUGGING */ |
4700 | ||
a687059c | 4701 | /* |
a0d0e21e LW |
4702 | - regprop - printable representation of opcode |
4703 | */ | |
46fc3d4c | 4704 | void |
864dbfa3 | 4705 | Perl_regprop(pTHX_ SV *sv, regnode *o) |
a687059c | 4706 | { |
35ff7856 | 4707 | #ifdef DEBUGGING |
9b155405 | 4708 | register int k; |
a0d0e21e | 4709 | |
54dc92de | 4710 | sv_setpvn(sv, "", 0); |
9b155405 | 4711 | if (OP(o) >= reg_num) /* regnode.type is unsigned */ |
830247a4 IZ |
4712 | /* It would be nice to FAIL() here, but this may be called from |
4713 | regexec.c, and it would be hard to supply pRExC_state. */ | |
4714 | Perl_croak(aTHX_ "Corrupted regexp opcode"); | |
9b155405 IZ |
4715 | sv_catpv(sv, (char*)reg_name[OP(o)]); /* Take off const! */ |
4716 | ||
4717 | k = PL_regkind[(U8)OP(o)]; | |
4718 | ||
2a782b5b JH |
4719 | if (k == EXACT) { |
4720 | SV *dsv = sv_2mortal(newSVpvn("", 0)); | |
c728cb41 JH |
4721 | /* Using is_utf8_string() is a crude hack but it may |
4722 | * be the best for now since we have no flag "this EXACTish | |
4723 | * node was UTF-8" --jhi */ | |
4724 | bool do_utf8 = is_utf8_string((U8*)STRING(o), STR_LEN(o)); | |
8a989385 | 4725 | char *s = do_utf8 ? |
c728cb41 JH |
4726 | pv_uni_display(dsv, (U8*)STRING(o), STR_LEN(o), 60, |
4727 | UNI_DISPLAY_REGEX) : | |
2a782b5b | 4728 | STRING(o); |
40eddc46 | 4729 | int len = do_utf8 ? |
2a782b5b JH |
4730 | strlen(s) : |
4731 | STR_LEN(o); | |
4732 | Perl_sv_catpvf(aTHX_ sv, " <%s%.*s%s>", | |
4733 | PL_colors[0], | |
4734 | len, s, | |
4735 | PL_colors[1]); | |
4736 | } | |
9b155405 | 4737 | else if (k == CURLY) { |
cb434fcc | 4738 | if (OP(o) == CURLYM || OP(o) == CURLYN || OP(o) == CURLYX) |
cea2e8a9 GS |
4739 | Perl_sv_catpvf(aTHX_ sv, "[%d]", o->flags); /* Parenth number */ |
4740 | Perl_sv_catpvf(aTHX_ sv, " {%d,%d}", ARG1(o), ARG2(o)); | |
a0d0e21e | 4741 | } |
2c2d71f5 JH |
4742 | else if (k == WHILEM && o->flags) /* Ordinal/of */ |
4743 | Perl_sv_catpvf(aTHX_ sv, "[%d/%d]", o->flags & 0xf, o->flags>>4); | |
9b155405 | 4744 | else if (k == REF || k == OPEN || k == CLOSE || k == GROUPP ) |
894356b3 | 4745 | Perl_sv_catpvf(aTHX_ sv, "%d", (int)ARG(o)); /* Parenth number */ |
9b155405 | 4746 | else if (k == LOGICAL) |
04ebc1ab | 4747 | Perl_sv_catpvf(aTHX_ sv, "[%d]", o->flags); /* 2: embedded, otherwise 1 */ |
653099ff GS |
4748 | else if (k == ANYOF) { |
4749 | int i, rangestart = -1; | |
ffc61ed2 | 4750 | U8 flags = ANYOF_FLAGS(o); |
a6d05634 | 4751 | const char * const anyofs[] = { /* Should be synchronized with |
19860706 | 4752 | * ANYOF_ #xdefines in regcomp.h */ |
653099ff GS |
4753 | "\\w", |
4754 | "\\W", | |
4755 | "\\s", | |
4756 | "\\S", | |
4757 | "\\d", | |
4758 | "\\D", | |
4759 | "[:alnum:]", | |
4760 | "[:^alnum:]", | |
4761 | "[:alpha:]", | |
4762 | "[:^alpha:]", | |
4763 | "[:ascii:]", | |
4764 | "[:^ascii:]", | |
4765 | "[:ctrl:]", | |
4766 | "[:^ctrl:]", | |
4767 | "[:graph:]", | |
4768 | "[:^graph:]", | |
4769 | "[:lower:]", | |
4770 | "[:^lower:]", | |
4771 | "[:print:]", | |
4772 | "[:^print:]", | |
4773 | "[:punct:]", | |
4774 | "[:^punct:]", | |
4775 | "[:upper:]", | |
aaa51d5e | 4776 | "[:^upper:]", |
653099ff | 4777 | "[:xdigit:]", |
aaa51d5e JF |
4778 | "[:^xdigit:]", |
4779 | "[:space:]", | |
4780 | "[:^space:]", | |
4781 | "[:blank:]", | |
4782 | "[:^blank:]" | |
653099ff GS |
4783 | }; |
4784 | ||
19860706 | 4785 | if (flags & ANYOF_LOCALE) |
653099ff | 4786 | sv_catpv(sv, "{loc}"); |
19860706 | 4787 | if (flags & ANYOF_FOLD) |
653099ff GS |
4788 | sv_catpv(sv, "{i}"); |
4789 | Perl_sv_catpvf(aTHX_ sv, "[%s", PL_colors[0]); | |
19860706 | 4790 | if (flags & ANYOF_INVERT) |
653099ff | 4791 | sv_catpv(sv, "^"); |
ffc61ed2 JH |
4792 | for (i = 0; i <= 256; i++) { |
4793 | if (i < 256 && ANYOF_BITMAP_TEST(o,i)) { | |
4794 | if (rangestart == -1) | |
4795 | rangestart = i; | |
4796 | } else if (rangestart != -1) { | |
4797 | if (i <= rangestart + 3) | |
4798 | for (; rangestart < i; rangestart++) | |
653099ff | 4799 | put_byte(sv, rangestart); |
ffc61ed2 JH |
4800 | else { |
4801 | put_byte(sv, rangestart); | |
4802 | sv_catpv(sv, "-"); | |
4803 | put_byte(sv, i - 1); | |
653099ff | 4804 | } |
ffc61ed2 | 4805 | rangestart = -1; |
653099ff | 4806 | } |
847a199f | 4807 | } |
ffc61ed2 JH |
4808 | |
4809 | if (o->flags & ANYOF_CLASS) | |
4810 | for (i = 0; i < sizeof(anyofs)/sizeof(char*); i++) | |
4811 | if (ANYOF_CLASS_TEST(o,i)) | |
4812 | sv_catpv(sv, anyofs[i]); | |
4813 | ||
4814 | if (flags & ANYOF_UNICODE) | |
4815 | sv_catpv(sv, "{unicode}"); | |
1aa99e6b | 4816 | else if (flags & ANYOF_UNICODE_ALL) |
2a782b5b | 4817 | sv_catpv(sv, "{unicode_all}"); |
ffc61ed2 JH |
4818 | |
4819 | { | |
4820 | SV *lv; | |
9e55ce06 | 4821 | SV *sw = regclass_swash(o, FALSE, &lv, 0); |
b81d288d | 4822 | |
ffc61ed2 JH |
4823 | if (lv) { |
4824 | if (sw) { | |
ffc61ed2 | 4825 | U8 s[UTF8_MAXLEN+1]; |
b81d288d | 4826 | |
ffc61ed2 | 4827 | for (i = 0; i <= 256; i++) { /* just the first 256 */ |
2b9d42f0 | 4828 | U8 *e = uvchr_to_utf8(s, i); |
ffc61ed2 | 4829 | |
3568d838 | 4830 | if (i < 256 && swash_fetch(sw, s, TRUE)) { |
ffc61ed2 JH |
4831 | if (rangestart == -1) |
4832 | rangestart = i; | |
4833 | } else if (rangestart != -1) { | |
4834 | U8 *p; | |
b81d288d | 4835 | |
ffc61ed2 JH |
4836 | if (i <= rangestart + 3) |
4837 | for (; rangestart < i; rangestart++) { | |
2b9d42f0 | 4838 | for(e = uvchr_to_utf8(s, rangestart), p = s; p < e; p++) |
ffc61ed2 JH |
4839 | put_byte(sv, *p); |
4840 | } | |
4841 | else { | |
2b9d42f0 | 4842 | for (e = uvchr_to_utf8(s, rangestart), p = s; p < e; p++) |
ffc61ed2 JH |
4843 | put_byte(sv, *p); |
4844 | sv_catpv(sv, "-"); | |
2b9d42f0 | 4845 | for (e = uvchr_to_utf8(s, i - 1), p = s; p < e; p++) |
ffc61ed2 JH |
4846 | put_byte(sv, *p); |
4847 | } | |
4848 | rangestart = -1; | |
4849 | } | |
19860706 | 4850 | } |
ffc61ed2 JH |
4851 | |
4852 | sv_catpv(sv, "..."); /* et cetera */ | |
19860706 | 4853 | } |
fde631ed | 4854 | |
ffc61ed2 JH |
4855 | { |
4856 | char *s = savepv(SvPVX(lv)); | |
4857 | char *origs = s; | |
b81d288d | 4858 | |
ffc61ed2 | 4859 | while(*s && *s != '\n') s++; |
b81d288d | 4860 | |
ffc61ed2 JH |
4861 | if (*s == '\n') { |
4862 | char *t = ++s; | |
4863 | ||
4864 | while (*s) { | |
4865 | if (*s == '\n') | |
4866 | *s = ' '; | |
4867 | s++; | |
4868 | } | |
4869 | if (s[-1] == ' ') | |
4870 | s[-1] = 0; | |
4871 | ||
4872 | sv_catpv(sv, t); | |
fde631ed | 4873 | } |
b81d288d | 4874 | |
ffc61ed2 | 4875 | Safefree(origs); |
fde631ed JH |
4876 | } |
4877 | } | |
653099ff | 4878 | } |
ffc61ed2 | 4879 | |
653099ff GS |
4880 | Perl_sv_catpvf(aTHX_ sv, "%s]", PL_colors[1]); |
4881 | } | |
9b155405 | 4882 | else if (k == BRANCHJ && (OP(o) == UNLESSM || OP(o) == IFMATCH)) |
cea2e8a9 | 4883 | Perl_sv_catpvf(aTHX_ sv, "[-%d]", o->flags); |
17c3b450 | 4884 | #endif /* DEBUGGING */ |
35ff7856 | 4885 | } |
a687059c | 4886 | |
cad2e5aa JH |
4887 | SV * |
4888 | Perl_re_intuit_string(pTHX_ regexp *prog) | |
4889 | { /* Assume that RE_INTUIT is set */ | |
4890 | DEBUG_r( | |
4891 | { STRLEN n_a; | |
33b8afdf JH |
4892 | char *s = SvPV(prog->check_substr |
4893 | ? prog->check_substr : prog->check_utf8, n_a); | |
cad2e5aa JH |
4894 | |
4895 | if (!PL_colorset) reginitcolors(); | |
4896 | PerlIO_printf(Perl_debug_log, | |
33b8afdf JH |
4897 | "%sUsing REx %ssubstr:%s `%s%.60s%s%s'\n", |
4898 | PL_colors[4], | |
4899 | prog->check_substr ? "" : "utf8 ", | |
4900 | PL_colors[5],PL_colors[0], | |
cad2e5aa JH |
4901 | s, |
4902 | PL_colors[1], | |
4903 | (strlen(s) > 60 ? "..." : "")); | |
4904 | } ); | |
4905 | ||
33b8afdf | 4906 | return prog->check_substr ? prog->check_substr : prog->check_utf8; |
cad2e5aa JH |
4907 | } |
4908 | ||
2b69d0c2 | 4909 | void |
864dbfa3 | 4910 | Perl_pregfree(pTHX_ struct regexp *r) |
a687059c | 4911 | { |
9e55ce06 JH |
4912 | #ifdef DEBUGGING |
4913 | SV *dsv = PERL_DEBUG_PAD_ZERO(0); | |
4914 | #endif | |
7821416a IZ |
4915 | |
4916 | if (!r || (--r->refcnt > 0)) | |
4917 | return; | |
9e55ce06 | 4918 | DEBUG_r({ |
d103360b HS |
4919 | int len; |
4920 | char *s; | |
4921 | ||
4922 | s = (r->reganch & ROPT_UTF8) ? pv_uni_display(dsv, (U8*)r->precomp, | |
4923 | r->prelen, 60, UNI_DISPLAY_REGEX) | |
9f369894 | 4924 | : pv_display(dsv, r->precomp, r->prelen, 0, 60); |
d103360b | 4925 | len = SvCUR(dsv); |
9e55ce06 JH |
4926 | if (!PL_colorset) |
4927 | reginitcolors(); | |
4928 | PerlIO_printf(Perl_debug_log, | |
4929 | "%sFreeing REx:%s `%s%*.*s%s%s'\n", | |
4930 | PL_colors[4],PL_colors[5],PL_colors[0], | |
4931 | len, len, s, | |
4932 | PL_colors[1], | |
4933 | len > 60 ? "..." : ""); | |
4934 | }); | |
cad2e5aa | 4935 | |
c277df42 | 4936 | if (r->precomp) |
a0d0e21e | 4937 | Safefree(r->precomp); |
fac92740 MJD |
4938 | if (r->offsets) /* 20010421 MJD */ |
4939 | Safefree(r->offsets); | |
ed252734 NC |
4940 | RX_MATCH_COPY_FREE(r); |
4941 | #ifdef PERL_COPY_ON_WRITE | |
4942 | if (r->saved_copy) | |
4943 | SvREFCNT_dec(r->saved_copy); | |
4944 | #endif | |
a193d654 GS |
4945 | if (r->substrs) { |
4946 | if (r->anchored_substr) | |
4947 | SvREFCNT_dec(r->anchored_substr); | |
33b8afdf JH |
4948 | if (r->anchored_utf8) |
4949 | SvREFCNT_dec(r->anchored_utf8); | |
a193d654 GS |
4950 | if (r->float_substr) |
4951 | SvREFCNT_dec(r->float_substr); | |
33b8afdf JH |
4952 | if (r->float_utf8) |
4953 | SvREFCNT_dec(r->float_utf8); | |
2779dcf1 | 4954 | Safefree(r->substrs); |
a193d654 | 4955 | } |
c277df42 IZ |
4956 | if (r->data) { |
4957 | int n = r->data->count; | |
f3548bdc DM |
4958 | PAD* new_comppad = NULL; |
4959 | PAD* old_comppad; | |
dfad63ad | 4960 | |
c277df42 | 4961 | while (--n >= 0) { |
261faec3 | 4962 | /* If you add a ->what type here, update the comment in regcomp.h */ |
c277df42 IZ |
4963 | switch (r->data->what[n]) { |
4964 | case 's': | |
4965 | SvREFCNT_dec((SV*)r->data->data[n]); | |
4966 | break; | |
653099ff GS |
4967 | case 'f': |
4968 | Safefree(r->data->data[n]); | |
4969 | break; | |
dfad63ad HS |
4970 | case 'p': |
4971 | new_comppad = (AV*)r->data->data[n]; | |
4972 | break; | |
c277df42 | 4973 | case 'o': |
dfad63ad | 4974 | if (new_comppad == NULL) |
cea2e8a9 | 4975 | Perl_croak(aTHX_ "panic: pregfree comppad"); |
f3548bdc DM |
4976 | PAD_SAVE_LOCAL(old_comppad, |
4977 | /* Watch out for global destruction's random ordering. */ | |
4978 | (SvTYPE(new_comppad) == SVt_PVAV) ? | |
4979 | new_comppad : Null(PAD *) | |
4980 | ); | |
9b978d73 DM |
4981 | if (!OpREFCNT_dec((OP_4tree*)r->data->data[n])) { |
4982 | op_free((OP_4tree*)r->data->data[n]); | |
4983 | } | |
4984 | ||
f3548bdc | 4985 | PAD_RESTORE_LOCAL(old_comppad); |
dfad63ad HS |
4986 | SvREFCNT_dec((SV*)new_comppad); |
4987 | new_comppad = NULL; | |
c277df42 IZ |
4988 | break; |
4989 | case 'n': | |
9e55ce06 | 4990 | break; |
c277df42 | 4991 | default: |
830247a4 | 4992 | Perl_croak(aTHX_ "panic: regfree data code '%c'", r->data->what[n]); |
c277df42 IZ |
4993 | } |
4994 | } | |
4995 | Safefree(r->data->what); | |
4996 | Safefree(r->data); | |
a0d0e21e LW |
4997 | } |
4998 | Safefree(r->startp); | |
4999 | Safefree(r->endp); | |
5000 | Safefree(r); | |
a687059c | 5001 | } |
c277df42 IZ |
5002 | |
5003 | /* | |
5004 | - regnext - dig the "next" pointer out of a node | |
5005 | * | |
5006 | * [Note, when REGALIGN is defined there are two places in regmatch() | |
5007 | * that bypass this code for speed.] | |
5008 | */ | |
5009 | regnode * | |
864dbfa3 | 5010 | Perl_regnext(pTHX_ register regnode *p) |
c277df42 IZ |
5011 | { |
5012 | register I32 offset; | |
5013 | ||
3280af22 | 5014 | if (p == &PL_regdummy) |
c277df42 IZ |
5015 | return(NULL); |
5016 | ||
5017 | offset = (reg_off_by_arg[OP(p)] ? ARG(p) : NEXT_OFF(p)); | |
5018 | if (offset == 0) | |
5019 | return(NULL); | |
5020 | ||
c277df42 | 5021 | return(p+offset); |
c277df42 IZ |
5022 | } |
5023 | ||
01f988be | 5024 | STATIC void |
cea2e8a9 | 5025 | S_re_croak2(pTHX_ const char* pat1,const char* pat2,...) |
c277df42 IZ |
5026 | { |
5027 | va_list args; | |
5028 | STRLEN l1 = strlen(pat1); | |
5029 | STRLEN l2 = strlen(pat2); | |
5030 | char buf[512]; | |
06bf62c7 | 5031 | SV *msv; |
c277df42 IZ |
5032 | char *message; |
5033 | ||
5034 | if (l1 > 510) | |
5035 | l1 = 510; | |
5036 | if (l1 + l2 > 510) | |
5037 | l2 = 510 - l1; | |
5038 | Copy(pat1, buf, l1 , char); | |
5039 | Copy(pat2, buf + l1, l2 , char); | |
3b818b81 GS |
5040 | buf[l1 + l2] = '\n'; |
5041 | buf[l1 + l2 + 1] = '\0'; | |
8736538c AS |
5042 | #ifdef I_STDARG |
5043 | /* ANSI variant takes additional second argument */ | |
c277df42 | 5044 | va_start(args, pat2); |
8736538c AS |
5045 | #else |
5046 | va_start(args); | |
5047 | #endif | |
5a844595 | 5048 | msv = vmess(buf, &args); |
c277df42 | 5049 | va_end(args); |
06bf62c7 | 5050 | message = SvPV(msv,l1); |
c277df42 IZ |
5051 | if (l1 > 512) |
5052 | l1 = 512; | |
5053 | Copy(message, buf, l1 , char); | |
197cf9b9 | 5054 | buf[l1-1] = '\0'; /* Overwrite \n */ |
cea2e8a9 | 5055 | Perl_croak(aTHX_ "%s", buf); |
c277df42 | 5056 | } |
a0ed51b3 LW |
5057 | |
5058 | /* XXX Here's a total kludge. But we need to re-enter for swash routines. */ | |
5059 | ||
5060 | void | |
864dbfa3 | 5061 | Perl_save_re_context(pTHX) |
b81d288d | 5062 | { |
830247a4 | 5063 | SAVEI32(PL_reg_flags); /* from regexec.c */ |
a0ed51b3 | 5064 | SAVEPPTR(PL_bostr); |
a0ed51b3 LW |
5065 | SAVEPPTR(PL_reginput); /* String-input pointer. */ |
5066 | SAVEPPTR(PL_regbol); /* Beginning of input, for ^ check. */ | |
5067 | SAVEPPTR(PL_regeol); /* End of input, for $ check. */ | |
7766f137 GS |
5068 | SAVEVPTR(PL_regstartp); /* Pointer to startp array. */ |
5069 | SAVEVPTR(PL_regendp); /* Ditto for endp. */ | |
5070 | SAVEVPTR(PL_reglastparen); /* Similarly for lastparen. */ | |
a5db57d6 | 5071 | SAVEVPTR(PL_reglastcloseparen); /* Similarly for lastcloseparen. */ |
a0ed51b3 | 5072 | SAVEPPTR(PL_regtill); /* How far we are required to go. */ |
b81d288d | 5073 | SAVEGENERICPV(PL_reg_start_tmp); /* from regexec.c */ |
a0ed51b3 | 5074 | PL_reg_start_tmp = 0; |
a0ed51b3 LW |
5075 | SAVEI32(PL_reg_start_tmpl); /* from regexec.c */ |
5076 | PL_reg_start_tmpl = 0; | |
7766f137 | 5077 | SAVEVPTR(PL_regdata); |
a0ed51b3 LW |
5078 | SAVEI32(PL_reg_eval_set); /* from regexec.c */ |
5079 | SAVEI32(PL_regnarrate); /* from regexec.c */ | |
7766f137 | 5080 | SAVEVPTR(PL_regprogram); /* from regexec.c */ |
a0ed51b3 | 5081 | SAVEINT(PL_regindent); /* from regexec.c */ |
7766f137 GS |
5082 | SAVEVPTR(PL_regcc); /* from regexec.c */ |
5083 | SAVEVPTR(PL_curcop); | |
7766f137 GS |
5084 | SAVEVPTR(PL_reg_call_cc); /* from regexec.c */ |
5085 | SAVEVPTR(PL_reg_re); /* from regexec.c */ | |
54b6e2fa IZ |
5086 | SAVEPPTR(PL_reg_ganch); /* from regexec.c */ |
5087 | SAVESPTR(PL_reg_sv); /* from regexec.c */ | |
9febdf04 | 5088 | SAVEBOOL(PL_reg_match_utf8); /* from regexec.c */ |
7766f137 | 5089 | SAVEVPTR(PL_reg_magic); /* from regexec.c */ |
54b6e2fa | 5090 | SAVEI32(PL_reg_oldpos); /* from regexec.c */ |
7766f137 GS |
5091 | SAVEVPTR(PL_reg_oldcurpm); /* from regexec.c */ |
5092 | SAVEVPTR(PL_reg_curpm); /* from regexec.c */ | |
a5db57d6 GS |
5093 | SAVEPPTR(PL_reg_oldsaved); /* old saved substr during match */ |
5094 | PL_reg_oldsaved = Nullch; | |
5095 | SAVEI32(PL_reg_oldsavedlen); /* old length of saved substr during match */ | |
5096 | PL_reg_oldsavedlen = 0; | |
ed252734 NC |
5097 | #ifdef PERL_COPY_ON_WRITE |
5098 | SAVESPTR(PL_nrs); | |
5099 | PL_nrs = Nullsv; | |
5100 | #endif | |
a5db57d6 GS |
5101 | SAVEI32(PL_reg_maxiter); /* max wait until caching pos */ |
5102 | PL_reg_maxiter = 0; | |
5103 | SAVEI32(PL_reg_leftiter); /* wait until caching pos */ | |
5104 | PL_reg_leftiter = 0; | |
5105 | SAVEGENERICPV(PL_reg_poscache); /* cache of pos of WHILEM */ | |
5106 | PL_reg_poscache = Nullch; | |
5107 | SAVEI32(PL_reg_poscache_size); /* size of pos cache of WHILEM */ | |
5108 | PL_reg_poscache_size = 0; | |
5109 | SAVEPPTR(PL_regprecomp); /* uncompiled string. */ | |
5fb7366e | 5110 | SAVEI32(PL_regnpar); /* () count. */ |
e49a9654 | 5111 | SAVEI32(PL_regsize); /* from regexec.c */ |
ada6e8a9 AMS |
5112 | |
5113 | { | |
5114 | /* Save $1..$n (#18107: UTF-8 s/(\w+)/uc($1)/e); AMS 20021106. */ | |
a8514157 | 5115 | U32 i; |
ada6e8a9 AMS |
5116 | GV *mgv; |
5117 | REGEXP *rx; | |
5118 | char digits[16]; | |
5119 | ||
5120 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
5121 | for (i = 1; i <= rx->nparens; i++) { | |
d994d9a1 | 5122 | sprintf(digits, "%lu", (long)i); |
ada6e8a9 AMS |
5123 | if ((mgv = gv_fetchpv(digits, FALSE, SVt_PV))) |
5124 | save_scalar(mgv); | |
5125 | } | |
5126 | } | |
5127 | } | |
5128 | ||
54b6e2fa | 5129 | #ifdef DEBUGGING |
b81d288d | 5130 | SAVEPPTR(PL_reg_starttry); /* from regexec.c */ |
54b6e2fa | 5131 | #endif |
a0ed51b3 | 5132 | } |
51371543 | 5133 | |
51371543 | 5134 | static void |
acfe0abc | 5135 | clear_re(pTHX_ void *r) |
51371543 GS |
5136 | { |
5137 | ReREFCNT_dec((regexp *)r); | |
5138 | } | |
ffbc6a93 | 5139 |