Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* regcomp.c |
2 | */ | |
3 | ||
4 | /* | |
5 | * "A fair jaw-cracker dwarf-language must be." --Samwise Gamgee | |
6 | */ | |
7 | ||
a687059c LW |
8 | /* NOTE: this is derived from Henry Spencer's regexp code, and should not |
9 | * confused with the original package (see point 3 below). Thanks, Henry! | |
10 | */ | |
11 | ||
12 | /* Additional note: this code is very heavily munged from Henry's version | |
13 | * in places. In some spots I've traded clarity for efficiency, so don't | |
14 | * blame Henry for some of the lack of readability. | |
15 | */ | |
16 | ||
e50aee73 AD |
17 | /* The names of the functions have been changed from regcomp and |
18 | * regexec to pregcomp and pregexec in order to avoid conflicts | |
19 | * with the POSIX routines of the same names. | |
20 | */ | |
21 | ||
b9d5759e AD |
22 | #ifdef PERL_EXT_RE_BUILD |
23 | /* need to replace pregcomp et al, so enable that */ | |
24 | # ifndef PERL_IN_XSUB_RE | |
25 | # define PERL_IN_XSUB_RE | |
26 | # endif | |
27 | /* need access to debugger hooks */ | |
cad2e5aa | 28 | # if defined(PERL_EXT_RE_DEBUG) && !defined(DEBUGGING) |
b9d5759e AD |
29 | # define DEBUGGING |
30 | # endif | |
31 | #endif | |
32 | ||
33 | #ifdef PERL_IN_XSUB_RE | |
d06ea78c | 34 | /* We *really* need to overwrite these symbols: */ |
56953603 IZ |
35 | # define Perl_pregcomp my_regcomp |
36 | # define Perl_regdump my_regdump | |
37 | # define Perl_regprop my_regprop | |
d06ea78c | 38 | # define Perl_pregfree my_regfree |
cad2e5aa JH |
39 | # define Perl_re_intuit_string my_re_intuit_string |
40 | /* *These* symbols are masked to allow static link. */ | |
d06ea78c | 41 | # define Perl_regnext my_regnext |
f0b8d043 | 42 | # define Perl_save_re_context my_save_re_context |
b81d288d | 43 | # define Perl_reginitcolors my_reginitcolors |
c5be433b GS |
44 | |
45 | # define PERL_NO_GET_CONTEXT | |
b81d288d | 46 | #endif |
56953603 | 47 | |
f0fcb552 | 48 | /*SUPPRESS 112*/ |
a687059c | 49 | /* |
e50aee73 | 50 | * pregcomp and pregexec -- regsub and regerror are not used in perl |
a687059c LW |
51 | * |
52 | * Copyright (c) 1986 by University of Toronto. | |
53 | * Written by Henry Spencer. Not derived from licensed software. | |
54 | * | |
55 | * Permission is granted to anyone to use this software for any | |
56 | * purpose on any computer system, and to redistribute it freely, | |
57 | * subject to the following restrictions: | |
58 | * | |
59 | * 1. The author is not responsible for the consequences of use of | |
60 | * this software, no matter how awful, even if they arise | |
61 | * from defects in it. | |
62 | * | |
63 | * 2. The origin of this software must not be misrepresented, either | |
64 | * by explicit claim or by omission. | |
65 | * | |
66 | * 3. Altered versions must be plainly marked as such, and must not | |
67 | * be misrepresented as being the original software. | |
68 | * | |
69 | * | |
70 | **** Alterations to Henry's code are... | |
71 | **** | |
bc89e66f | 72 | **** Copyright (c) 1991-2001, Larry Wall |
a687059c | 73 | **** |
9ef589d8 LW |
74 | **** You may distribute under the terms of either the GNU General Public |
75 | **** License or the Artistic License, as specified in the README file. | |
76 | ||
a687059c LW |
77 | * |
78 | * Beware that some of this code is subtly aware of the way operator | |
79 | * precedence is structured in regular expressions. Serious changes in | |
80 | * regular-expression syntax might require a total rethink. | |
81 | */ | |
82 | #include "EXTERN.h" | |
864dbfa3 | 83 | #define PERL_IN_REGCOMP_C |
a687059c | 84 | #include "perl.h" |
d06ea78c | 85 | |
c5be433b GS |
86 | #ifdef PERL_IN_XSUB_RE |
87 | # if defined(PERL_CAPI) || defined(PERL_OBJECT) | |
88 | # include "XSUB.h" | |
89 | # endif | |
90 | #else | |
d06ea78c GS |
91 | # include "INTERN.h" |
92 | #endif | |
c277df42 IZ |
93 | |
94 | #define REG_COMP_C | |
a687059c LW |
95 | #include "regcomp.h" |
96 | ||
d4cce5f1 | 97 | #ifdef op |
11343788 | 98 | #undef op |
d4cce5f1 | 99 | #endif /* op */ |
11343788 | 100 | |
fe14fcc3 LW |
101 | #ifdef MSDOS |
102 | # if defined(BUGGY_MSC6) | |
103 | /* MSC 6.00A breaks on op/regexp.t test 85 unless we turn this off */ | |
104 | # pragma optimize("a",off) | |
105 | /* But MSC 6.00A is happy with 'w', for aliases only across function calls*/ | |
106 | # pragma optimize("w",on ) | |
107 | # endif /* BUGGY_MSC6 */ | |
108 | #endif /* MSDOS */ | |
109 | ||
a687059c LW |
110 | #ifndef STATIC |
111 | #define STATIC static | |
112 | #endif | |
113 | ||
830247a4 IZ |
114 | typedef struct RExC_state_t { |
115 | U16 flags16; /* are we folding, multilining? */ | |
116 | char *precomp; /* uncompiled string. */ | |
117 | regexp *rx; | |
fac92740 | 118 | char *start; /* Start of input for compile */ |
830247a4 IZ |
119 | char *end; /* End of input for compile */ |
120 | char *parse; /* Input-scan pointer. */ | |
121 | I32 whilem_seen; /* number of WHILEM in this expr */ | |
fac92740 | 122 | regnode *emit_start; /* Start of emitted-code area */ |
ffc61ed2 | 123 | regnode *emit; /* Code-emit pointer; ®dummy = don't = compiling */ |
830247a4 IZ |
124 | I32 naughty; /* How bad is this pattern? */ |
125 | I32 sawback; /* Did we see \1, ...? */ | |
126 | U32 seen; | |
127 | I32 size; /* Code size. */ | |
128 | I32 npar; /* () count. */ | |
129 | I32 extralen; | |
130 | I32 seen_zerolen; | |
131 | I32 seen_evals; | |
1aa99e6b | 132 | I32 utf8; |
830247a4 IZ |
133 | #if ADD_TO_REGEXEC |
134 | char *starttry; /* -Dr: where regtry was called. */ | |
135 | #define RExC_starttry (pRExC_state->starttry) | |
136 | #endif | |
137 | } RExC_state_t; | |
138 | ||
139 | #define RExC_flags16 (pRExC_state->flags16) | |
140 | #define RExC_precomp (pRExC_state->precomp) | |
141 | #define RExC_rx (pRExC_state->rx) | |
fac92740 | 142 | #define RExC_start (pRExC_state->start) |
830247a4 IZ |
143 | #define RExC_end (pRExC_state->end) |
144 | #define RExC_parse (pRExC_state->parse) | |
145 | #define RExC_whilem_seen (pRExC_state->whilem_seen) | |
fac92740 | 146 | #define RExC_offsets (pRExC_state->rx->offsets) /* I am not like the others */ |
830247a4 | 147 | #define RExC_emit (pRExC_state->emit) |
fac92740 | 148 | #define RExC_emit_start (pRExC_state->emit_start) |
830247a4 IZ |
149 | #define RExC_naughty (pRExC_state->naughty) |
150 | #define RExC_sawback (pRExC_state->sawback) | |
151 | #define RExC_seen (pRExC_state->seen) | |
152 | #define RExC_size (pRExC_state->size) | |
153 | #define RExC_npar (pRExC_state->npar) | |
154 | #define RExC_extralen (pRExC_state->extralen) | |
155 | #define RExC_seen_zerolen (pRExC_state->seen_zerolen) | |
156 | #define RExC_seen_evals (pRExC_state->seen_evals) | |
1aa99e6b | 157 | #define RExC_utf8 (pRExC_state->utf8) |
830247a4 | 158 | |
a687059c LW |
159 | #define ISMULT1(c) ((c) == '*' || (c) == '+' || (c) == '?') |
160 | #define ISMULT2(s) ((*s) == '*' || (*s) == '+' || (*s) == '?' || \ | |
161 | ((*s) == '{' && regcurly(s))) | |
a687059c | 162 | |
35c8bce7 LW |
163 | #ifdef SPSTART |
164 | #undef SPSTART /* dratted cpp namespace... */ | |
165 | #endif | |
a687059c LW |
166 | /* |
167 | * Flags to be passed up and down. | |
168 | */ | |
a687059c | 169 | #define WORST 0 /* Worst case. */ |
821b33a5 | 170 | #define HASWIDTH 0x1 /* Known to match non-null strings. */ |
a0d0e21e LW |
171 | #define SIMPLE 0x2 /* Simple enough to be STAR/PLUS operand. */ |
172 | #define SPSTART 0x4 /* Starts with * or +. */ | |
173 | #define TRYAGAIN 0x8 /* Weeded out a declaration. */ | |
a687059c | 174 | |
2c2d71f5 JH |
175 | /* Length of a variant. */ |
176 | ||
177 | typedef struct scan_data_t { | |
178 | I32 len_min; | |
179 | I32 len_delta; | |
180 | I32 pos_min; | |
181 | I32 pos_delta; | |
182 | SV *last_found; | |
183 | I32 last_end; /* min value, <0 unless valid. */ | |
184 | I32 last_start_min; | |
185 | I32 last_start_max; | |
186 | SV **longest; /* Either &l_fixed, or &l_float. */ | |
187 | SV *longest_fixed; | |
188 | I32 offset_fixed; | |
189 | SV *longest_float; | |
190 | I32 offset_float_min; | |
191 | I32 offset_float_max; | |
192 | I32 flags; | |
193 | I32 whilem_c; | |
cb434fcc | 194 | I32 *last_closep; |
653099ff | 195 | struct regnode_charclass_class *start_class; |
2c2d71f5 JH |
196 | } scan_data_t; |
197 | ||
a687059c | 198 | /* |
e50aee73 | 199 | * Forward declarations for pregcomp()'s friends. |
a687059c | 200 | */ |
a0d0e21e | 201 | |
b81d288d | 202 | static scan_data_t zero_scan_data = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
cb434fcc | 203 | 0, 0, 0, 0, 0, 0}; |
c277df42 IZ |
204 | |
205 | #define SF_BEFORE_EOL (SF_BEFORE_SEOL|SF_BEFORE_MEOL) | |
206 | #define SF_BEFORE_SEOL 0x1 | |
207 | #define SF_BEFORE_MEOL 0x2 | |
208 | #define SF_FIX_BEFORE_EOL (SF_FIX_BEFORE_SEOL|SF_FIX_BEFORE_MEOL) | |
209 | #define SF_FL_BEFORE_EOL (SF_FL_BEFORE_SEOL|SF_FL_BEFORE_MEOL) | |
210 | ||
09b7f37c CB |
211 | #ifdef NO_UNARY_PLUS |
212 | # define SF_FIX_SHIFT_EOL (0+2) | |
213 | # define SF_FL_SHIFT_EOL (0+4) | |
214 | #else | |
215 | # define SF_FIX_SHIFT_EOL (+2) | |
216 | # define SF_FL_SHIFT_EOL (+4) | |
217 | #endif | |
c277df42 IZ |
218 | |
219 | #define SF_FIX_BEFORE_SEOL (SF_BEFORE_SEOL << SF_FIX_SHIFT_EOL) | |
220 | #define SF_FIX_BEFORE_MEOL (SF_BEFORE_MEOL << SF_FIX_SHIFT_EOL) | |
221 | ||
222 | #define SF_FL_BEFORE_SEOL (SF_BEFORE_SEOL << SF_FL_SHIFT_EOL) | |
223 | #define SF_FL_BEFORE_MEOL (SF_BEFORE_MEOL << SF_FL_SHIFT_EOL) /* 0x20 */ | |
224 | #define SF_IS_INF 0x40 | |
225 | #define SF_HAS_PAR 0x80 | |
226 | #define SF_IN_PAR 0x100 | |
227 | #define SF_HAS_EVAL 0x200 | |
4bfe0158 | 228 | #define SCF_DO_SUBSTR 0x400 |
653099ff GS |
229 | #define SCF_DO_STCLASS_AND 0x0800 |
230 | #define SCF_DO_STCLASS_OR 0x1000 | |
231 | #define SCF_DO_STCLASS (SCF_DO_STCLASS_AND|SCF_DO_STCLASS_OR) | |
e1901655 | 232 | #define SCF_WHILEM_VISITED_POS 0x2000 |
c277df42 | 233 | |
1aa99e6b | 234 | #define UTF RExC_utf8 |
830247a4 IZ |
235 | #define LOC (RExC_flags16 & PMf_LOCALE) |
236 | #define FOLD (RExC_flags16 & PMf_FOLD) | |
a0ed51b3 | 237 | |
ffc61ed2 | 238 | #define OOB_UNICODE 12345678 |
93733859 | 239 | #define OOB_NAMEDCLASS -1 |
b8c5462f | 240 | |
a0ed51b3 LW |
241 | #define CHR_SVLEN(sv) (UTF ? sv_len_utf8(sv) : SvCUR(sv)) |
242 | #define CHR_DIST(a,b) (UTF ? utf8_distance(a,b) : a - b) | |
243 | ||
8615cb43 | 244 | |
b45f050a JF |
245 | /* length of regex to show in messages that don't mark a position within */ |
246 | #define RegexLengthToShowInErrorMessages 127 | |
247 | ||
248 | /* | |
249 | * If MARKER[12] are adjusted, be sure to adjust the constants at the top | |
250 | * of t/op/regmesg.t, the tests in t/op/re_tests, and those in | |
251 | * op/pragma/warn/regcomp. | |
252 | */ | |
7253e4e3 RK |
253 | #define MARKER1 "<-- HERE" /* marker as it appears in the description */ |
254 | #define MARKER2 " <-- HERE " /* marker as it appears within the regex */ | |
b81d288d | 255 | |
7253e4e3 | 256 | #define REPORT_LOCATION " in regex; marked by " MARKER1 " in m/%.*s" MARKER2 "%s/" |
b45f050a JF |
257 | |
258 | /* | |
259 | * Calls SAVEDESTRUCTOR_X if needed, then calls Perl_croak with the given | |
260 | * arg. Show regex, up to a maximum length. If it's too long, chop and add | |
261 | * "...". | |
262 | */ | |
a4eb266f | 263 | #define FAIL(msg) \ |
8615cb43 | 264 | STMT_START { \ |
a4eb266f | 265 | char *ellipses = ""; \ |
830247a4 | 266 | unsigned len = strlen(RExC_precomp); \ |
b45f050a | 267 | \ |
8615cb43 | 268 | if (!SIZE_ONLY) \ |
830247a4 | 269 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ |
b45f050a JF |
270 | \ |
271 | if (len > RegexLengthToShowInErrorMessages) { \ | |
272 | /* chop 10 shorter than the max, to ensure meaning of "..." */ \ | |
273 | len = RegexLengthToShowInErrorMessages - 10; \ | |
a4eb266f | 274 | ellipses = "..."; \ |
b45f050a JF |
275 | } \ |
276 | Perl_croak(aTHX_ "%s in regex m/%.*s%s/", \ | |
830247a4 | 277 | msg, (int)len, RExC_precomp, ellipses); \ |
8615cb43 JF |
278 | } STMT_END |
279 | ||
b45f050a JF |
280 | /* |
281 | * Calls SAVEDESTRUCTOR_X if needed, then calls Perl_croak with the given | |
282 | * args. Show regex, up to a maximum length. If it's too long, chop and add | |
283 | * "...". | |
284 | */ | |
a4eb266f | 285 | #define FAIL2(pat,msg) \ |
8615cb43 | 286 | STMT_START { \ |
a4eb266f | 287 | char *ellipses = ""; \ |
830247a4 | 288 | unsigned len = strlen(RExC_precomp); \ |
b45f050a | 289 | \ |
8615cb43 | 290 | if (!SIZE_ONLY) \ |
830247a4 | 291 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ |
8615cb43 | 292 | \ |
b45f050a JF |
293 | if (len > RegexLengthToShowInErrorMessages) { \ |
294 | /* chop 10 shorter than the max, to ensure meaning of "..." */ \ | |
295 | len = RegexLengthToShowInErrorMessages - 10; \ | |
a4eb266f | 296 | ellipses = "..."; \ |
b45f050a JF |
297 | } \ |
298 | S_re_croak2(aTHX_ pat, " in regex m/%.*s%s/", \ | |
830247a4 | 299 | msg, (int)len, RExC_precomp, ellipses); \ |
b45f050a JF |
300 | } STMT_END |
301 | ||
302 | ||
303 | /* | |
304 | * Simple_vFAIL -- like FAIL, but marks the current location in the scan | |
305 | */ | |
306 | #define Simple_vFAIL(m) \ | |
307 | STMT_START { \ | |
830247a4 | 308 | unsigned offset = strlen(RExC_precomp)-(RExC_end-RExC_parse); \ |
b45f050a JF |
309 | \ |
310 | Perl_croak(aTHX_ "%s" REPORT_LOCATION, \ | |
830247a4 | 311 | m, (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
312 | } STMT_END |
313 | ||
314 | /* | |
315 | * Calls SAVEDESTRUCTOR_X if needed, then Simple_vFAIL() | |
316 | */ | |
317 | #define vFAIL(m) \ | |
318 | STMT_START { \ | |
319 | if (!SIZE_ONLY) \ | |
830247a4 | 320 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ |
b45f050a JF |
321 | Simple_vFAIL(m); \ |
322 | } STMT_END | |
323 | ||
324 | /* | |
325 | * Like Simple_vFAIL(), but accepts two arguments. | |
326 | */ | |
327 | #define Simple_vFAIL2(m,a1) \ | |
328 | STMT_START { \ | |
830247a4 | 329 | unsigned offset = strlen(RExC_precomp)-(RExC_end-RExC_parse); \ |
b45f050a JF |
330 | \ |
331 | S_re_croak2(aTHX_ m, REPORT_LOCATION, a1, \ | |
830247a4 | 332 | (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
333 | } STMT_END |
334 | ||
335 | /* | |
336 | * Calls SAVEDESTRUCTOR_X if needed, then Simple_vFAIL2(). | |
337 | */ | |
338 | #define vFAIL2(m,a1) \ | |
339 | STMT_START { \ | |
340 | if (!SIZE_ONLY) \ | |
830247a4 | 341 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ |
b45f050a JF |
342 | Simple_vFAIL2(m, a1); \ |
343 | } STMT_END | |
344 | ||
345 | ||
346 | /* | |
347 | * Like Simple_vFAIL(), but accepts three arguments. | |
348 | */ | |
349 | #define Simple_vFAIL3(m, a1, a2) \ | |
350 | STMT_START { \ | |
830247a4 | 351 | unsigned offset = strlen(RExC_precomp)-(RExC_end-RExC_parse); \ |
b45f050a JF |
352 | \ |
353 | S_re_croak2(aTHX_ m, REPORT_LOCATION, a1, a2, \ | |
830247a4 | 354 | (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
355 | } STMT_END |
356 | ||
357 | /* | |
358 | * Calls SAVEDESTRUCTOR_X if needed, then Simple_vFAIL3(). | |
359 | */ | |
360 | #define vFAIL3(m,a1,a2) \ | |
361 | STMT_START { \ | |
362 | if (!SIZE_ONLY) \ | |
830247a4 | 363 | SAVEDESTRUCTOR_X(clear_re,(void*)RExC_rx); \ |
b45f050a JF |
364 | Simple_vFAIL3(m, a1, a2); \ |
365 | } STMT_END | |
366 | ||
367 | /* | |
368 | * Like Simple_vFAIL(), but accepts four arguments. | |
369 | */ | |
370 | #define Simple_vFAIL4(m, a1, a2, a3) \ | |
371 | STMT_START { \ | |
830247a4 | 372 | unsigned offset = strlen(RExC_precomp)-(RExC_end-RExC_parse); \ |
b45f050a JF |
373 | \ |
374 | S_re_croak2(aTHX_ m, REPORT_LOCATION, a1, a2, a3,\ | |
830247a4 | 375 | (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
376 | } STMT_END |
377 | ||
378 | /* | |
379 | * Like Simple_vFAIL(), but accepts five arguments. | |
380 | */ | |
381 | #define Simple_vFAIL5(m, a1, a2, a3, a4) \ | |
382 | STMT_START { \ | |
830247a4 | 383 | unsigned offset = strlen(RExC_precomp)-(RExC_end-RExC_parse); \ |
b45f050a | 384 | S_re_croak2(aTHX_ m, REPORT_LOCATION, a1, a2, a3, a4,\ |
830247a4 | 385 | (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
386 | } STMT_END |
387 | ||
388 | ||
389 | #define vWARN(loc,m) \ | |
390 | STMT_START { \ | |
830247a4 | 391 | unsigned offset = strlen(RExC_precomp)-(RExC_end-(loc)); \ |
b45f050a | 392 | Perl_warner(aTHX_ WARN_REGEXP, "%s" REPORT_LOCATION,\ |
830247a4 | 393 | m, (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
394 | } STMT_END \ |
395 | ||
f9373011 PM |
396 | #define vWARNdep(loc,m) \ |
397 | STMT_START { \ | |
398 | unsigned offset = strlen(RExC_precomp)-(RExC_end-(loc)); \ | |
399 | int warn_cat = ckWARN(WARN_REGEXP) ? WARN_REGEXP : WARN_DEPRECATED; \ | |
400 | Perl_warner(aTHX_ warn_cat, "%s" REPORT_LOCATION,\ | |
401 | m, (int)offset, RExC_precomp, RExC_precomp + offset); \ | |
402 | } STMT_END \ | |
403 | ||
b45f050a JF |
404 | |
405 | #define vWARN2(loc, m, a1) \ | |
406 | STMT_START { \ | |
830247a4 | 407 | unsigned offset = strlen(RExC_precomp)-(RExC_end-(loc)); \ |
b45f050a JF |
408 | Perl_warner(aTHX_ WARN_REGEXP, m REPORT_LOCATION,\ |
409 | a1, \ | |
830247a4 | 410 | (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
411 | } STMT_END |
412 | ||
413 | #define vWARN3(loc, m, a1, a2) \ | |
414 | STMT_START { \ | |
830247a4 | 415 | unsigned offset = strlen(RExC_precomp) - (RExC_end - (loc)); \ |
b45f050a JF |
416 | Perl_warner(aTHX_ WARN_REGEXP, m REPORT_LOCATION, \ |
417 | a1, a2, \ | |
830247a4 | 418 | (int)offset, RExC_precomp, RExC_precomp + offset); \ |
b45f050a JF |
419 | } STMT_END |
420 | ||
421 | #define vWARN4(loc, m, a1, a2, a3) \ | |
422 | STMT_START { \ | |
830247a4 | 423 | unsigned offset = strlen(RExC_precomp)-(RExC_end-(loc)); \ |
b45f050a JF |
424 | Perl_warner(aTHX_ WARN_REGEXP, m REPORT_LOCATION,\ |
425 | a1, a2, a3, \ | |
830247a4 | 426 | (int)offset, RExC_precomp, RExC_precomp + offset); \ |
8615cb43 JF |
427 | } STMT_END |
428 | ||
9d1d55b5 JP |
429 | /* used for the parse_flags section for (?c) -- japhy */ |
430 | #define vWARN5(loc, m, a1, a2, a3, a4) \ | |
431 | STMT_START { \ | |
432 | unsigned offset = strlen(RExC_precomp)-(RExC_end-(loc)); \ | |
433 | Perl_warner(aTHX_ WARN_REGEXP, m REPORT_LOCATION, \ | |
434 | a1, a2, a3, a4, \ | |
435 | (int)offset, RExC_precomp, RExC_precomp + offset); \ | |
436 | } STMT_END | |
437 | ||
8615cb43 | 438 | |
cd439c50 | 439 | /* Allow for side effects in s */ |
fd3f0ae2 | 440 | #define REGC(c,s) STMT_START { if (!SIZE_ONLY) *(s) = (c); else (void)(s);} STMT_END |
cd439c50 | 441 | |
fac92740 MJD |
442 | /* Macros for recording node offsets. 20001227 mjd@plover.com |
443 | * Nodes are numbered 1, 2, 3, 4. Node #n's position is recorded in | |
444 | * element 2*n-1 of the array. Element #2n holds the byte length node #n. | |
445 | * Element 0 holds the number n. | |
446 | */ | |
447 | ||
448 | #define MJD_OFFSET_DEBUG(x) | |
449 | /* #define MJD_OFFSET_DEBUG(x) fprintf x */ | |
450 | ||
451 | ||
452 | # define Set_Node_Offset_To_R(node,byte) \ | |
453 | STMT_START { \ | |
454 | if (! SIZE_ONLY) { \ | |
455 | if((node) < 0) { \ | |
456 | Perl_croak(aTHX_ "value of node is %d in Offset macro", node); \ | |
457 | } else { \ | |
458 | RExC_offsets[2*(node)-1] = (byte); \ | |
459 | } \ | |
460 | } \ | |
461 | } STMT_END | |
462 | ||
463 | # define Set_Node_Offset(node,byte) Set_Node_Offset_To_R((node)-RExC_emit_start, (byte)-RExC_start) | |
464 | # define Set_Cur_Node_Offset Set_Node_Offset(RExC_emit, RExC_parse) | |
465 | ||
466 | # define Set_Node_Length_To_R(node,len) \ | |
467 | STMT_START { \ | |
468 | if (! SIZE_ONLY) { \ | |
469 | MJD_OFFSET_DEBUG((stderr, "** (%d) size of node %d is %d.\n", __LINE__, (node), (len))); \ | |
470 | if((node) < 0) { \ | |
471 | Perl_croak(aTHX_ "value of node is %d in Length macro", node); \ | |
472 | } else { \ | |
473 | RExC_offsets[2*(node)] = (len); \ | |
474 | } \ | |
475 | } \ | |
476 | } STMT_END | |
477 | ||
478 | # define Set_Node_Length(node,len) Set_Node_Length_To_R((node)-RExC_emit_start, len) | |
479 | # define Set_Cur_Node_Length(len) Set_Node_Length(RExC_emit, len) | |
480 | # define Set_Node_Cur_Length(node) Set_Node_Length(node, RExC_parse - parse_start) | |
481 | ||
482 | /* Get offsets and lengths */ | |
483 | #define Node_Offset(n) (RExC_offsets[2*((n)-RExC_emit_start)-1]) | |
484 | #define Node_Length(n) (RExC_offsets[2*((n)-RExC_emit_start)]) | |
485 | ||
51371543 | 486 | static void clear_re(pTHXo_ void *r); |
4327152a | 487 | |
653099ff GS |
488 | /* Mark that we cannot extend a found fixed substring at this point. |
489 | Updata the longest found anchored substring and the longest found | |
490 | floating substrings if needed. */ | |
491 | ||
4327152a | 492 | STATIC void |
830247a4 | 493 | S_scan_commit(pTHX_ RExC_state_t *pRExC_state, scan_data_t *data) |
c277df42 | 494 | { |
a0ed51b3 LW |
495 | STRLEN l = CHR_SVLEN(data->last_found); |
496 | STRLEN old_l = CHR_SVLEN(*data->longest); | |
b81d288d | 497 | |
c277df42 IZ |
498 | if ((l >= old_l) && ((l > old_l) || (data->flags & SF_BEFORE_EOL))) { |
499 | sv_setsv(*data->longest, data->last_found); | |
500 | if (*data->longest == data->longest_fixed) { | |
501 | data->offset_fixed = l ? data->last_start_min : data->pos_min; | |
502 | if (data->flags & SF_BEFORE_EOL) | |
b81d288d | 503 | data->flags |
c277df42 IZ |
504 | |= ((data->flags & SF_BEFORE_EOL) << SF_FIX_SHIFT_EOL); |
505 | else | |
506 | data->flags &= ~SF_FIX_BEFORE_EOL; | |
a0ed51b3 LW |
507 | } |
508 | else { | |
c277df42 | 509 | data->offset_float_min = l ? data->last_start_min : data->pos_min; |
b81d288d AB |
510 | data->offset_float_max = (l |
511 | ? data->last_start_max | |
c277df42 IZ |
512 | : data->pos_min + data->pos_delta); |
513 | if (data->flags & SF_BEFORE_EOL) | |
b81d288d | 514 | data->flags |
c277df42 IZ |
515 | |= ((data->flags & SF_BEFORE_EOL) << SF_FL_SHIFT_EOL); |
516 | else | |
517 | data->flags &= ~SF_FL_BEFORE_EOL; | |
518 | } | |
519 | } | |
520 | SvCUR_set(data->last_found, 0); | |
521 | data->last_end = -1; | |
522 | data->flags &= ~SF_BEFORE_EOL; | |
523 | } | |
524 | ||
653099ff GS |
525 | /* Can match anything (initialization) */ |
526 | STATIC void | |
830247a4 | 527 | S_cl_anything(pTHX_ RExC_state_t *pRExC_state, struct regnode_charclass_class *cl) |
653099ff | 528 | { |
9af0acdb JH |
529 | int value; |
530 | ||
653099ff | 531 | ANYOF_CLASS_ZERO(cl); |
9af0acdb JH |
532 | for (value = 0; value < 256; ++value) |
533 | ANYOF_BITMAP_SET(cl, value); | |
1aa99e6b | 534 | cl->flags = ANYOF_EOS|ANYOF_UNICODE_ALL; |
653099ff GS |
535 | if (LOC) |
536 | cl->flags |= ANYOF_LOCALE; | |
537 | } | |
538 | ||
539 | /* Can match anything (initialization) */ | |
540 | STATIC int | |
541 | S_cl_is_anything(pTHX_ struct regnode_charclass_class *cl) | |
542 | { | |
543 | int value; | |
544 | ||
aaa51d5e | 545 | for (value = 0; value <= ANYOF_MAX; value += 2) |
653099ff GS |
546 | if (ANYOF_CLASS_TEST(cl, value) && ANYOF_CLASS_TEST(cl, value + 1)) |
547 | return 1; | |
1aa99e6b IH |
548 | if (!(cl->flags & ANYOF_UNICODE_ALL)) |
549 | return 0; | |
9af0acdb JH |
550 | for (value = 0; value < 256; ++value) |
551 | if (!ANYOF_BITMAP_TEST(cl, value)) | |
653099ff GS |
552 | return 0; |
553 | return 1; | |
554 | } | |
555 | ||
556 | /* Can match anything (initialization) */ | |
557 | STATIC void | |
830247a4 | 558 | S_cl_init(pTHX_ RExC_state_t *pRExC_state, struct regnode_charclass_class *cl) |
653099ff | 559 | { |
8ecf7187 | 560 | Zero(cl, 1, struct regnode_charclass_class); |
653099ff | 561 | cl->type = ANYOF; |
830247a4 | 562 | cl_anything(pRExC_state, cl); |
653099ff GS |
563 | } |
564 | ||
565 | STATIC void | |
830247a4 | 566 | S_cl_init_zero(pTHX_ RExC_state_t *pRExC_state, struct regnode_charclass_class *cl) |
653099ff | 567 | { |
8ecf7187 | 568 | Zero(cl, 1, struct regnode_charclass_class); |
653099ff | 569 | cl->type = ANYOF; |
830247a4 | 570 | cl_anything(pRExC_state, cl); |
653099ff GS |
571 | if (LOC) |
572 | cl->flags |= ANYOF_LOCALE; | |
573 | } | |
574 | ||
575 | /* 'And' a given class with another one. Can create false positives */ | |
576 | /* We assume that cl is not inverted */ | |
577 | STATIC void | |
578 | S_cl_and(pTHX_ struct regnode_charclass_class *cl, | |
579 | struct regnode_charclass_class *and_with) | |
580 | { | |
653099ff GS |
581 | if (!(and_with->flags & ANYOF_CLASS) |
582 | && !(cl->flags & ANYOF_CLASS) | |
583 | && (and_with->flags & ANYOF_LOCALE) == (cl->flags & ANYOF_LOCALE) | |
584 | && !(and_with->flags & ANYOF_FOLD) | |
585 | && !(cl->flags & ANYOF_FOLD)) { | |
586 | int i; | |
587 | ||
588 | if (and_with->flags & ANYOF_INVERT) | |
589 | for (i = 0; i < ANYOF_BITMAP_SIZE; i++) | |
590 | cl->bitmap[i] &= ~and_with->bitmap[i]; | |
591 | else | |
592 | for (i = 0; i < ANYOF_BITMAP_SIZE; i++) | |
593 | cl->bitmap[i] &= and_with->bitmap[i]; | |
594 | } /* XXXX: logic is complicated otherwise, leave it along for a moment. */ | |
595 | if (!(and_with->flags & ANYOF_EOS)) | |
596 | cl->flags &= ~ANYOF_EOS; | |
1aa99e6b IH |
597 | |
598 | if (cl->flags & ANYOF_UNICODE_ALL && and_with->flags & ANYOF_UNICODE) { | |
599 | cl->flags &= ~ANYOF_UNICODE_ALL; | |
600 | cl->flags |= ANYOF_UNICODE; | |
601 | ARG_SET(cl, ARG(and_with)); | |
602 | } | |
603 | if (!(and_with->flags & ANYOF_UNICODE_ALL)) | |
604 | cl->flags &= ~ANYOF_UNICODE_ALL; | |
605 | if (!(and_with->flags & (ANYOF_UNICODE|ANYOF_UNICODE_ALL))) | |
606 | cl->flags &= ~ANYOF_UNICODE; | |
653099ff GS |
607 | } |
608 | ||
609 | /* 'OR' a given class with another one. Can create false positives */ | |
610 | /* We assume that cl is not inverted */ | |
611 | STATIC void | |
830247a4 | 612 | S_cl_or(pTHX_ RExC_state_t *pRExC_state, struct regnode_charclass_class *cl, struct regnode_charclass_class *or_with) |
653099ff | 613 | { |
653099ff GS |
614 | if (or_with->flags & ANYOF_INVERT) { |
615 | /* We do not use | |
616 | * (B1 | CL1) | (!B2 & !CL2) = (B1 | !B2 & !CL2) | (CL1 | (!B2 & !CL2)) | |
617 | * <= (B1 | !B2) | (CL1 | !CL2) | |
618 | * which is wasteful if CL2 is small, but we ignore CL2: | |
619 | * (B1 | CL1) | (!B2 & !CL2) <= (B1 | CL1) | !B2 = (B1 | !B2) | CL1 | |
620 | * XXXX Can we handle case-fold? Unclear: | |
621 | * (OK1(i) | OK1(i')) | !(OK1(i) | OK1(i')) = | |
622 | * (OK1(i) | OK1(i')) | (!OK1(i) & !OK1(i')) | |
623 | */ | |
624 | if ( (or_with->flags & ANYOF_LOCALE) == (cl->flags & ANYOF_LOCALE) | |
625 | && !(or_with->flags & ANYOF_FOLD) | |
626 | && !(cl->flags & ANYOF_FOLD) ) { | |
627 | int i; | |
628 | ||
629 | for (i = 0; i < ANYOF_BITMAP_SIZE; i++) | |
630 | cl->bitmap[i] |= ~or_with->bitmap[i]; | |
631 | } /* XXXX: logic is complicated otherwise */ | |
632 | else { | |
830247a4 | 633 | cl_anything(pRExC_state, cl); |
653099ff GS |
634 | } |
635 | } else { | |
636 | /* (B1 | CL1) | (B2 | CL2) = (B1 | B2) | (CL1 | CL2)) */ | |
637 | if ( (or_with->flags & ANYOF_LOCALE) == (cl->flags & ANYOF_LOCALE) | |
b81d288d | 638 | && (!(or_with->flags & ANYOF_FOLD) |
653099ff GS |
639 | || (cl->flags & ANYOF_FOLD)) ) { |
640 | int i; | |
641 | ||
642 | /* OR char bitmap and class bitmap separately */ | |
643 | for (i = 0; i < ANYOF_BITMAP_SIZE; i++) | |
644 | cl->bitmap[i] |= or_with->bitmap[i]; | |
645 | if (or_with->flags & ANYOF_CLASS) { | |
646 | for (i = 0; i < ANYOF_CLASSBITMAP_SIZE; i++) | |
647 | cl->classflags[i] |= or_with->classflags[i]; | |
648 | cl->flags |= ANYOF_CLASS; | |
649 | } | |
650 | } | |
651 | else { /* XXXX: logic is complicated, leave it along for a moment. */ | |
830247a4 | 652 | cl_anything(pRExC_state, cl); |
653099ff GS |
653 | } |
654 | } | |
655 | if (or_with->flags & ANYOF_EOS) | |
656 | cl->flags |= ANYOF_EOS; | |
1aa99e6b IH |
657 | |
658 | if (cl->flags & ANYOF_UNICODE && or_with->flags & ANYOF_UNICODE && | |
659 | ARG(cl) != ARG(or_with)) { | |
660 | cl->flags |= ANYOF_UNICODE_ALL; | |
661 | cl->flags &= ~ANYOF_UNICODE; | |
662 | } | |
663 | if (or_with->flags & ANYOF_UNICODE_ALL) { | |
664 | cl->flags |= ANYOF_UNICODE_ALL; | |
665 | cl->flags &= ~ANYOF_UNICODE; | |
666 | } | |
653099ff GS |
667 | } |
668 | ||
669 | /* REx optimizer. Converts nodes into quickier variants "in place". | |
670 | Finds fixed substrings. */ | |
671 | ||
c277df42 IZ |
672 | /* Stops at toplevel WHILEM as well as at `last'. At end *scanp is set |
673 | to the position after last scanned or to NULL. */ | |
674 | ||
76e3520e | 675 | STATIC I32 |
830247a4 | 676 | S_study_chunk(pTHX_ RExC_state_t *pRExC_state, regnode **scanp, I32 *deltap, regnode *last, scan_data_t *data, U32 flags) |
c277df42 IZ |
677 | /* scanp: Start here (read-write). */ |
678 | /* deltap: Write maxlen-minlen here. */ | |
679 | /* last: Stop before this one. */ | |
680 | { | |
681 | I32 min = 0, pars = 0, code; | |
682 | regnode *scan = *scanp, *next; | |
683 | I32 delta = 0; | |
684 | int is_inf = (flags & SCF_DO_SUBSTR) && (data->flags & SF_IS_INF); | |
aca2d497 | 685 | int is_inf_internal = 0; /* The studied chunk is infinite */ |
c277df42 IZ |
686 | I32 is_par = OP(scan) == OPEN ? ARG(scan) : 0; |
687 | scan_data_t data_fake; | |
653099ff | 688 | struct regnode_charclass_class and_with; /* Valid if flags & SCF_DO_STCLASS_OR */ |
b81d288d | 689 | |
c277df42 IZ |
690 | while (scan && OP(scan) != END && scan < last) { |
691 | /* Peephole optimizer: */ | |
692 | ||
22c35a8c | 693 | if (PL_regkind[(U8)OP(scan)] == EXACT) { |
653099ff | 694 | /* Merge several consecutive EXACTish nodes into one. */ |
c277df42 IZ |
695 | regnode *n = regnext(scan); |
696 | U32 stringok = 1; | |
697 | #ifdef DEBUGGING | |
698 | regnode *stop = scan; | |
b81d288d | 699 | #endif |
c277df42 | 700 | |
cd439c50 | 701 | next = scan + NODE_SZ_STR(scan); |
c277df42 IZ |
702 | /* Skip NOTHING, merge EXACT*. */ |
703 | while (n && | |
b81d288d | 704 | ( PL_regkind[(U8)OP(n)] == NOTHING || |
c277df42 IZ |
705 | (stringok && (OP(n) == OP(scan)))) |
706 | && NEXT_OFF(n) | |
707 | && NEXT_OFF(scan) + NEXT_OFF(n) < I16_MAX) { | |
708 | if (OP(n) == TAIL || n > next) | |
709 | stringok = 0; | |
22c35a8c | 710 | if (PL_regkind[(U8)OP(n)] == NOTHING) { |
c277df42 IZ |
711 | NEXT_OFF(scan) += NEXT_OFF(n); |
712 | next = n + NODE_STEP_REGNODE; | |
713 | #ifdef DEBUGGING | |
714 | if (stringok) | |
715 | stop = n; | |
b81d288d | 716 | #endif |
c277df42 | 717 | n = regnext(n); |
a0ed51b3 | 718 | } |
f49d4d0f | 719 | else if (stringok) { |
cd439c50 | 720 | int oldl = STR_LEN(scan); |
c277df42 | 721 | regnode *nnext = regnext(n); |
f49d4d0f | 722 | |
b81d288d | 723 | if (oldl + STR_LEN(n) > U8_MAX) |
c277df42 IZ |
724 | break; |
725 | NEXT_OFF(scan) += NEXT_OFF(n); | |
cd439c50 IZ |
726 | STR_LEN(scan) += STR_LEN(n); |
727 | next = n + NODE_SZ_STR(n); | |
c277df42 | 728 | /* Now we can overwrite *n : */ |
f49d4d0f | 729 | Move(STRING(n), STRING(scan) + oldl, STR_LEN(n), char); |
c277df42 | 730 | #ifdef DEBUGGING |
f49d4d0f | 731 | stop = next - 1; |
b81d288d | 732 | #endif |
c277df42 IZ |
733 | n = nnext; |
734 | } | |
735 | } | |
736 | #ifdef DEBUGGING | |
737 | /* Allow dumping */ | |
cd439c50 | 738 | n = scan + NODE_SZ_STR(scan); |
c277df42 | 739 | while (n <= stop) { |
22c35a8c | 740 | if (PL_regkind[(U8)OP(n)] != NOTHING || OP(n) == NOTHING) { |
c277df42 IZ |
741 | OP(n) = OPTIMIZED; |
742 | NEXT_OFF(n) = 0; | |
743 | } | |
744 | n++; | |
745 | } | |
653099ff | 746 | #endif |
c277df42 | 747 | } |
653099ff GS |
748 | /* Follow the next-chain of the current node and optimize |
749 | away all the NOTHINGs from it. */ | |
c277df42 | 750 | if (OP(scan) != CURLYX) { |
048cfca1 GS |
751 | int max = (reg_off_by_arg[OP(scan)] |
752 | ? I32_MAX | |
753 | /* I32 may be smaller than U16 on CRAYs! */ | |
754 | : (I32_MAX < U16_MAX ? I32_MAX : U16_MAX)); | |
c277df42 IZ |
755 | int off = (reg_off_by_arg[OP(scan)] ? ARG(scan) : NEXT_OFF(scan)); |
756 | int noff; | |
757 | regnode *n = scan; | |
b81d288d | 758 | |
c277df42 IZ |
759 | /* Skip NOTHING and LONGJMP. */ |
760 | while ((n = regnext(n)) | |
22c35a8c | 761 | && ((PL_regkind[(U8)OP(n)] == NOTHING && (noff = NEXT_OFF(n))) |
c277df42 IZ |
762 | || ((OP(n) == LONGJMP) && (noff = ARG(n)))) |
763 | && off + noff < max) | |
764 | off += noff; | |
765 | if (reg_off_by_arg[OP(scan)]) | |
766 | ARG(scan) = off; | |
b81d288d | 767 | else |
c277df42 IZ |
768 | NEXT_OFF(scan) = off; |
769 | } | |
653099ff GS |
770 | /* The principal pseudo-switch. Cannot be a switch, since we |
771 | look into several different things. */ | |
b81d288d | 772 | if (OP(scan) == BRANCH || OP(scan) == BRANCHJ |
c277df42 IZ |
773 | || OP(scan) == IFTHEN || OP(scan) == SUSPEND) { |
774 | next = regnext(scan); | |
775 | code = OP(scan); | |
b81d288d AB |
776 | |
777 | if (OP(next) == code || code == IFTHEN || code == SUSPEND) { | |
c277df42 | 778 | I32 max1 = 0, min1 = I32_MAX, num = 0; |
653099ff | 779 | struct regnode_charclass_class accum; |
c277df42 | 780 | |
653099ff | 781 | if (flags & SCF_DO_SUBSTR) /* XXXX Add !SUSPEND? */ |
830247a4 | 782 | scan_commit(pRExC_state, data); /* Cannot merge strings after this. */ |
653099ff | 783 | if (flags & SCF_DO_STCLASS) |
830247a4 | 784 | cl_init_zero(pRExC_state, &accum); |
c277df42 | 785 | while (OP(scan) == code) { |
830247a4 | 786 | I32 deltanext, minnext, f = 0, fake; |
653099ff | 787 | struct regnode_charclass_class this_class; |
c277df42 IZ |
788 | |
789 | num++; | |
790 | data_fake.flags = 0; | |
b81d288d | 791 | if (data) { |
2c2d71f5 | 792 | data_fake.whilem_c = data->whilem_c; |
cb434fcc IZ |
793 | data_fake.last_closep = data->last_closep; |
794 | } | |
795 | else | |
796 | data_fake.last_closep = &fake; | |
c277df42 IZ |
797 | next = regnext(scan); |
798 | scan = NEXTOPER(scan); | |
799 | if (code != BRANCH) | |
800 | scan = NEXTOPER(scan); | |
653099ff | 801 | if (flags & SCF_DO_STCLASS) { |
830247a4 | 802 | cl_init(pRExC_state, &this_class); |
653099ff GS |
803 | data_fake.start_class = &this_class; |
804 | f = SCF_DO_STCLASS_AND; | |
b81d288d | 805 | } |
e1901655 IZ |
806 | if (flags & SCF_WHILEM_VISITED_POS) |
807 | f |= SCF_WHILEM_VISITED_POS; | |
653099ff | 808 | /* we suppose the run is continuous, last=next...*/ |
830247a4 IZ |
809 | minnext = study_chunk(pRExC_state, &scan, &deltanext, |
810 | next, &data_fake, f); | |
b81d288d | 811 | if (min1 > minnext) |
c277df42 IZ |
812 | min1 = minnext; |
813 | if (max1 < minnext + deltanext) | |
814 | max1 = minnext + deltanext; | |
815 | if (deltanext == I32_MAX) | |
aca2d497 | 816 | is_inf = is_inf_internal = 1; |
c277df42 IZ |
817 | scan = next; |
818 | if (data_fake.flags & (SF_HAS_PAR|SF_IN_PAR)) | |
819 | pars++; | |
405ff068 | 820 | if (data && (data_fake.flags & SF_HAS_EVAL)) |
c277df42 | 821 | data->flags |= SF_HAS_EVAL; |
2c2d71f5 JH |
822 | if (data) |
823 | data->whilem_c = data_fake.whilem_c; | |
653099ff | 824 | if (flags & SCF_DO_STCLASS) |
830247a4 | 825 | cl_or(pRExC_state, &accum, &this_class); |
b81d288d | 826 | if (code == SUSPEND) |
c277df42 IZ |
827 | break; |
828 | } | |
829 | if (code == IFTHEN && num < 2) /* Empty ELSE branch */ | |
830 | min1 = 0; | |
831 | if (flags & SCF_DO_SUBSTR) { | |
832 | data->pos_min += min1; | |
833 | data->pos_delta += max1 - min1; | |
834 | if (max1 != min1 || is_inf) | |
835 | data->longest = &(data->longest_float); | |
836 | } | |
837 | min += min1; | |
838 | delta += max1 - min1; | |
653099ff | 839 | if (flags & SCF_DO_STCLASS_OR) { |
830247a4 | 840 | cl_or(pRExC_state, data->start_class, &accum); |
653099ff GS |
841 | if (min1) { |
842 | cl_and(data->start_class, &and_with); | |
843 | flags &= ~SCF_DO_STCLASS; | |
844 | } | |
845 | } | |
846 | else if (flags & SCF_DO_STCLASS_AND) { | |
de0c8cb8 GS |
847 | if (min1) { |
848 | cl_and(data->start_class, &accum); | |
653099ff | 849 | flags &= ~SCF_DO_STCLASS; |
de0c8cb8 GS |
850 | } |
851 | else { | |
b81d288d | 852 | /* Switch to OR mode: cache the old value of |
de0c8cb8 GS |
853 | * data->start_class */ |
854 | StructCopy(data->start_class, &and_with, | |
855 | struct regnode_charclass_class); | |
856 | flags &= ~SCF_DO_STCLASS_AND; | |
857 | StructCopy(&accum, data->start_class, | |
858 | struct regnode_charclass_class); | |
859 | flags |= SCF_DO_STCLASS_OR; | |
860 | data->start_class->flags |= ANYOF_EOS; | |
861 | } | |
653099ff | 862 | } |
a0ed51b3 LW |
863 | } |
864 | else if (code == BRANCHJ) /* single branch is optimized. */ | |
c277df42 IZ |
865 | scan = NEXTOPER(NEXTOPER(scan)); |
866 | else /* single branch is optimized. */ | |
867 | scan = NEXTOPER(scan); | |
868 | continue; | |
a0ed51b3 LW |
869 | } |
870 | else if (OP(scan) == EXACT) { | |
cd439c50 | 871 | I32 l = STR_LEN(scan); |
1aa99e6b | 872 | UV uc = *((U8*)STRING(scan)); |
a0ed51b3 | 873 | if (UTF) { |
1aa99e6b IH |
874 | U8 *s = (U8*)STRING(scan); |
875 | l = utf8_length(s, s + l); | |
9041c2e3 | 876 | uc = utf8_to_uvchr(s, NULL); |
a0ed51b3 LW |
877 | } |
878 | min += l; | |
c277df42 | 879 | if (flags & SCF_DO_SUBSTR) { /* Update longest substr. */ |
c277df42 IZ |
880 | /* The code below prefers earlier match for fixed |
881 | offset, later match for variable offset. */ | |
882 | if (data->last_end == -1) { /* Update the start info. */ | |
883 | data->last_start_min = data->pos_min; | |
884 | data->last_start_max = is_inf | |
b81d288d | 885 | ? I32_MAX : data->pos_min + data->pos_delta; |
c277df42 | 886 | } |
cd439c50 | 887 | sv_catpvn(data->last_found, STRING(scan), STR_LEN(scan)); |
c277df42 IZ |
888 | data->last_end = data->pos_min + l; |
889 | data->pos_min += l; /* As in the first entry. */ | |
890 | data->flags &= ~SF_BEFORE_EOL; | |
891 | } | |
653099ff GS |
892 | if (flags & SCF_DO_STCLASS_AND) { |
893 | /* Check whether it is compatible with what we know already! */ | |
894 | int compat = 1; | |
895 | ||
1aa99e6b | 896 | if (uc >= 0x100 || |
516a5887 | 897 | (!(data->start_class->flags & (ANYOF_CLASS | ANYOF_LOCALE)) |
1aa99e6b | 898 | && !ANYOF_BITMAP_TEST(data->start_class, uc) |
653099ff | 899 | && (!(data->start_class->flags & ANYOF_FOLD) |
1aa99e6b | 900 | || !ANYOF_BITMAP_TEST(data->start_class, PL_fold[uc]))) |
516a5887 | 901 | ) |
653099ff GS |
902 | compat = 0; |
903 | ANYOF_CLASS_ZERO(data->start_class); | |
904 | ANYOF_BITMAP_ZERO(data->start_class); | |
905 | if (compat) | |
1aa99e6b | 906 | ANYOF_BITMAP_SET(data->start_class, uc); |
653099ff | 907 | data->start_class->flags &= ~ANYOF_EOS; |
9b877dbb IH |
908 | if (uc < 0x100) |
909 | data->start_class->flags &= ~ANYOF_UNICODE_ALL; | |
653099ff GS |
910 | } |
911 | else if (flags & SCF_DO_STCLASS_OR) { | |
912 | /* false positive possible if the class is case-folded */ | |
1aa99e6b | 913 | if (uc < 0x100) |
9b877dbb IH |
914 | ANYOF_BITMAP_SET(data->start_class, uc); |
915 | else | |
916 | data->start_class->flags |= ANYOF_UNICODE_ALL; | |
653099ff GS |
917 | data->start_class->flags &= ~ANYOF_EOS; |
918 | cl_and(data->start_class, &and_with); | |
919 | } | |
920 | flags &= ~SCF_DO_STCLASS; | |
a0ed51b3 | 921 | } |
653099ff | 922 | else if (PL_regkind[(U8)OP(scan)] == EXACT) { /* But OP != EXACT! */ |
cd439c50 | 923 | I32 l = STR_LEN(scan); |
1aa99e6b | 924 | UV uc = *((U8*)STRING(scan)); |
653099ff GS |
925 | |
926 | /* Search for fixed substrings supports EXACT only. */ | |
b81d288d | 927 | if (flags & SCF_DO_SUBSTR) |
830247a4 | 928 | scan_commit(pRExC_state, data); |
a0ed51b3 | 929 | if (UTF) { |
1aa99e6b IH |
930 | U8 *s = (U8 *)STRING(scan); |
931 | l = utf8_length(s, s + l); | |
9041c2e3 | 932 | uc = utf8_to_uvchr(s, NULL); |
a0ed51b3 LW |
933 | } |
934 | min += l; | |
c277df42 | 935 | if (data && (flags & SCF_DO_SUBSTR)) |
a0ed51b3 | 936 | data->pos_min += l; |
653099ff GS |
937 | if (flags & SCF_DO_STCLASS_AND) { |
938 | /* Check whether it is compatible with what we know already! */ | |
939 | int compat = 1; | |
940 | ||
1aa99e6b | 941 | if (uc >= 0x100 || |
516a5887 | 942 | (!(data->start_class->flags & (ANYOF_CLASS | ANYOF_LOCALE)) |
1aa99e6b | 943 | && !ANYOF_BITMAP_TEST(data->start_class, uc) |
516a5887 | 944 | && !ANYOF_BITMAP_TEST(data->start_class, PL_fold[uc]))) |
653099ff GS |
945 | compat = 0; |
946 | ANYOF_CLASS_ZERO(data->start_class); | |
947 | ANYOF_BITMAP_ZERO(data->start_class); | |
948 | if (compat) { | |
1aa99e6b | 949 | ANYOF_BITMAP_SET(data->start_class, uc); |
653099ff GS |
950 | data->start_class->flags &= ~ANYOF_EOS; |
951 | data->start_class->flags |= ANYOF_FOLD; | |
952 | if (OP(scan) == EXACTFL) | |
953 | data->start_class->flags |= ANYOF_LOCALE; | |
954 | } | |
955 | } | |
956 | else if (flags & SCF_DO_STCLASS_OR) { | |
957 | if (data->start_class->flags & ANYOF_FOLD) { | |
958 | /* false positive possible if the class is case-folded. | |
959 | Assume that the locale settings are the same... */ | |
1aa99e6b IH |
960 | if (uc < 0x100) |
961 | ANYOF_BITMAP_SET(data->start_class, uc); | |
653099ff GS |
962 | data->start_class->flags &= ~ANYOF_EOS; |
963 | } | |
964 | cl_and(data->start_class, &and_with); | |
965 | } | |
966 | flags &= ~SCF_DO_STCLASS; | |
a0ed51b3 | 967 | } |
4d61ec05 | 968 | else if (strchr((char*)PL_varies,OP(scan))) { |
9c5ffd7c | 969 | I32 mincount, maxcount, minnext, deltanext, fl = 0; |
aa7a4b56 | 970 | I32 f = flags, pos_before = 0; |
c277df42 | 971 | regnode *oscan = scan; |
653099ff GS |
972 | struct regnode_charclass_class this_class; |
973 | struct regnode_charclass_class *oclass = NULL; | |
974 | ||
22c35a8c | 975 | switch (PL_regkind[(U8)OP(scan)]) { |
653099ff | 976 | case WHILEM: /* End of (?:...)* . */ |
c277df42 IZ |
977 | scan = NEXTOPER(scan); |
978 | goto finish; | |
979 | case PLUS: | |
653099ff | 980 | if (flags & (SCF_DO_SUBSTR | SCF_DO_STCLASS)) { |
c277df42 | 981 | next = NEXTOPER(scan); |
653099ff | 982 | if (OP(next) == EXACT || (flags & SCF_DO_STCLASS)) { |
b81d288d AB |
983 | mincount = 1; |
984 | maxcount = REG_INFTY; | |
c277df42 IZ |
985 | next = regnext(scan); |
986 | scan = NEXTOPER(scan); | |
987 | goto do_curly; | |
988 | } | |
989 | } | |
990 | if (flags & SCF_DO_SUBSTR) | |
991 | data->pos_min++; | |
992 | min++; | |
993 | /* Fall through. */ | |
994 | case STAR: | |
653099ff GS |
995 | if (flags & SCF_DO_STCLASS) { |
996 | mincount = 0; | |
b81d288d | 997 | maxcount = REG_INFTY; |
653099ff GS |
998 | next = regnext(scan); |
999 | scan = NEXTOPER(scan); | |
1000 | goto do_curly; | |
1001 | } | |
b81d288d | 1002 | is_inf = is_inf_internal = 1; |
c277df42 IZ |
1003 | scan = regnext(scan); |
1004 | if (flags & SCF_DO_SUBSTR) { | |
830247a4 | 1005 | scan_commit(pRExC_state, data); /* Cannot extend fixed substrings */ |
c277df42 IZ |
1006 | data->longest = &(data->longest_float); |
1007 | } | |
1008 | goto optimize_curly_tail; | |
1009 | case CURLY: | |
b81d288d | 1010 | mincount = ARG1(scan); |
c277df42 IZ |
1011 | maxcount = ARG2(scan); |
1012 | next = regnext(scan); | |
cb434fcc IZ |
1013 | if (OP(scan) == CURLYX) { |
1014 | I32 lp = (data ? *(data->last_closep) : 0); | |
1015 | ||
1016 | scan->flags = ((lp <= U8_MAX) ? lp : U8_MAX); | |
1017 | } | |
c277df42 IZ |
1018 | scan = NEXTOPER(scan) + EXTRA_STEP_2ARGS; |
1019 | do_curly: | |
1020 | if (flags & SCF_DO_SUBSTR) { | |
830247a4 | 1021 | if (mincount == 0) scan_commit(pRExC_state,data); /* Cannot extend fixed substrings */ |
c277df42 IZ |
1022 | pos_before = data->pos_min; |
1023 | } | |
1024 | if (data) { | |
1025 | fl = data->flags; | |
1026 | data->flags &= ~(SF_HAS_PAR|SF_IN_PAR|SF_HAS_EVAL); | |
1027 | if (is_inf) | |
1028 | data->flags |= SF_IS_INF; | |
1029 | } | |
653099ff | 1030 | if (flags & SCF_DO_STCLASS) { |
830247a4 | 1031 | cl_init(pRExC_state, &this_class); |
653099ff GS |
1032 | oclass = data->start_class; |
1033 | data->start_class = &this_class; | |
1034 | f |= SCF_DO_STCLASS_AND; | |
1035 | f &= ~SCF_DO_STCLASS_OR; | |
1036 | } | |
e1901655 IZ |
1037 | /* These are the cases when once a subexpression |
1038 | fails at a particular position, it cannot succeed | |
1039 | even after backtracking at the enclosing scope. | |
b81d288d | 1040 | |
e1901655 IZ |
1041 | XXXX what if minimal match and we are at the |
1042 | initial run of {n,m}? */ | |
1043 | if ((mincount != maxcount - 1) && (maxcount != REG_INFTY)) | |
1044 | f &= ~SCF_WHILEM_VISITED_POS; | |
653099ff | 1045 | |
c277df42 | 1046 | /* This will finish on WHILEM, setting scan, or on NULL: */ |
b81d288d AB |
1047 | minnext = study_chunk(pRExC_state, &scan, &deltanext, last, data, |
1048 | mincount == 0 | |
653099ff GS |
1049 | ? (f & ~SCF_DO_SUBSTR) : f); |
1050 | ||
1051 | if (flags & SCF_DO_STCLASS) | |
1052 | data->start_class = oclass; | |
1053 | if (mincount == 0 || minnext == 0) { | |
1054 | if (flags & SCF_DO_STCLASS_OR) { | |
830247a4 | 1055 | cl_or(pRExC_state, data->start_class, &this_class); |
653099ff GS |
1056 | } |
1057 | else if (flags & SCF_DO_STCLASS_AND) { | |
b81d288d | 1058 | /* Switch to OR mode: cache the old value of |
653099ff GS |
1059 | * data->start_class */ |
1060 | StructCopy(data->start_class, &and_with, | |
1061 | struct regnode_charclass_class); | |
1062 | flags &= ~SCF_DO_STCLASS_AND; | |
1063 | StructCopy(&this_class, data->start_class, | |
1064 | struct regnode_charclass_class); | |
1065 | flags |= SCF_DO_STCLASS_OR; | |
1066 | data->start_class->flags |= ANYOF_EOS; | |
1067 | } | |
1068 | } else { /* Non-zero len */ | |
1069 | if (flags & SCF_DO_STCLASS_OR) { | |
830247a4 | 1070 | cl_or(pRExC_state, data->start_class, &this_class); |
653099ff GS |
1071 | cl_and(data->start_class, &and_with); |
1072 | } | |
1073 | else if (flags & SCF_DO_STCLASS_AND) | |
1074 | cl_and(data->start_class, &this_class); | |
1075 | flags &= ~SCF_DO_STCLASS; | |
1076 | } | |
c277df42 IZ |
1077 | if (!scan) /* It was not CURLYX, but CURLY. */ |
1078 | scan = next; | |
84037bb0 HS |
1079 | if (ckWARN(WARN_REGEXP) |
1080 | && (minnext == 0) && (deltanext == 0) | |
99799961 | 1081 | && data && !(data->flags & (SF_HAS_PAR|SF_IN_PAR)) |
17feb5d5 | 1082 | && maxcount <= REG_INFTY/3) /* Complement check for big count */ |
b45f050a | 1083 | { |
830247a4 | 1084 | vWARN(RExC_parse, |
b45f050a JF |
1085 | "Quantifier unexpected on zero-length expression"); |
1086 | } | |
1087 | ||
c277df42 | 1088 | min += minnext * mincount; |
b81d288d | 1089 | is_inf_internal |= ((maxcount == REG_INFTY |
155aba94 GS |
1090 | && (minnext + deltanext) > 0) |
1091 | || deltanext == I32_MAX); | |
aca2d497 | 1092 | is_inf |= is_inf_internal; |
c277df42 IZ |
1093 | delta += (minnext + deltanext) * maxcount - minnext * mincount; |
1094 | ||
1095 | /* Try powerful optimization CURLYX => CURLYN. */ | |
b81d288d | 1096 | if ( OP(oscan) == CURLYX && data |
c277df42 IZ |
1097 | && data->flags & SF_IN_PAR |
1098 | && !(data->flags & SF_HAS_EVAL) | |
1099 | && !deltanext && minnext == 1 ) { | |
1100 | /* Try to optimize to CURLYN. */ | |
1101 | regnode *nxt = NEXTOPER(oscan) + EXTRA_STEP_2ARGS; | |
1102 | regnode *nxt1 = nxt, *nxt2; | |
1103 | ||
1104 | /* Skip open. */ | |
1105 | nxt = regnext(nxt); | |
4d61ec05 | 1106 | if (!strchr((char*)PL_simple,OP(nxt)) |
22c35a8c | 1107 | && !(PL_regkind[(U8)OP(nxt)] == EXACT |
b81d288d | 1108 | && STR_LEN(nxt) == 1)) |
c277df42 IZ |
1109 | goto nogo; |
1110 | nxt2 = nxt; | |
1111 | nxt = regnext(nxt); | |
b81d288d | 1112 | if (OP(nxt) != CLOSE) |
c277df42 IZ |
1113 | goto nogo; |
1114 | /* Now we know that nxt2 is the only contents: */ | |
1115 | oscan->flags = ARG(nxt); | |
1116 | OP(oscan) = CURLYN; | |
1117 | OP(nxt1) = NOTHING; /* was OPEN. */ | |
1118 | #ifdef DEBUGGING | |
1119 | OP(nxt1 + 1) = OPTIMIZED; /* was count. */ | |
1120 | NEXT_OFF(nxt1+ 1) = 0; /* just for consistancy. */ | |
1121 | NEXT_OFF(nxt2) = 0; /* just for consistancy with CURLY. */ | |
1122 | OP(nxt) = OPTIMIZED; /* was CLOSE. */ | |
1123 | OP(nxt + 1) = OPTIMIZED; /* was count. */ | |
1124 | NEXT_OFF(nxt+ 1) = 0; /* just for consistancy. */ | |
b81d288d | 1125 | #endif |
c277df42 | 1126 | } |
c277df42 IZ |
1127 | nogo: |
1128 | ||
1129 | /* Try optimization CURLYX => CURLYM. */ | |
b81d288d | 1130 | if ( OP(oscan) == CURLYX && data |
c277df42 | 1131 | && !(data->flags & SF_HAS_PAR) |
c277df42 IZ |
1132 | && !(data->flags & SF_HAS_EVAL) |
1133 | && !deltanext ) { | |
1134 | /* XXXX How to optimize if data == 0? */ | |
1135 | /* Optimize to a simpler form. */ | |
1136 | regnode *nxt = NEXTOPER(oscan) + EXTRA_STEP_2ARGS; /* OPEN */ | |
1137 | regnode *nxt2; | |
1138 | ||
1139 | OP(oscan) = CURLYM; | |
1140 | while ( (nxt2 = regnext(nxt)) /* skip over embedded stuff*/ | |
b81d288d | 1141 | && (OP(nxt2) != WHILEM)) |
c277df42 IZ |
1142 | nxt = nxt2; |
1143 | OP(nxt2) = SUCCEED; /* Whas WHILEM */ | |
c277df42 IZ |
1144 | /* Need to optimize away parenths. */ |
1145 | if (data->flags & SF_IN_PAR) { | |
1146 | /* Set the parenth number. */ | |
1147 | regnode *nxt1 = NEXTOPER(oscan) + EXTRA_STEP_2ARGS; /* OPEN*/ | |
1148 | ||
b81d288d | 1149 | if (OP(nxt) != CLOSE) |
b45f050a | 1150 | FAIL("Panic opt close"); |
c277df42 IZ |
1151 | oscan->flags = ARG(nxt); |
1152 | OP(nxt1) = OPTIMIZED; /* was OPEN. */ | |
1153 | OP(nxt) = OPTIMIZED; /* was CLOSE. */ | |
1154 | #ifdef DEBUGGING | |
1155 | OP(nxt1 + 1) = OPTIMIZED; /* was count. */ | |
1156 | OP(nxt + 1) = OPTIMIZED; /* was count. */ | |
1157 | NEXT_OFF(nxt1 + 1) = 0; /* just for consistancy. */ | |
1158 | NEXT_OFF(nxt + 1) = 0; /* just for consistancy. */ | |
b81d288d | 1159 | #endif |
c277df42 IZ |
1160 | #if 0 |
1161 | while ( nxt1 && (OP(nxt1) != WHILEM)) { | |
1162 | regnode *nnxt = regnext(nxt1); | |
b81d288d | 1163 | |
c277df42 IZ |
1164 | if (nnxt == nxt) { |
1165 | if (reg_off_by_arg[OP(nxt1)]) | |
1166 | ARG_SET(nxt1, nxt2 - nxt1); | |
1167 | else if (nxt2 - nxt1 < U16_MAX) | |
1168 | NEXT_OFF(nxt1) = nxt2 - nxt1; | |
1169 | else | |
1170 | OP(nxt) = NOTHING; /* Cannot beautify */ | |
1171 | } | |
1172 | nxt1 = nnxt; | |
1173 | } | |
1174 | #endif | |
1175 | /* Optimize again: */ | |
b81d288d | 1176 | study_chunk(pRExC_state, &nxt1, &deltanext, nxt, |
e1901655 | 1177 | NULL, 0); |
a0ed51b3 LW |
1178 | } |
1179 | else | |
c277df42 | 1180 | oscan->flags = 0; |
c277df42 | 1181 | } |
e1901655 IZ |
1182 | else if ((OP(oscan) == CURLYX) |
1183 | && (flags & SCF_WHILEM_VISITED_POS) | |
1184 | /* See the comment on a similar expression above. | |
1185 | However, this time it not a subexpression | |
1186 | we care about, but the expression itself. */ | |
1187 | && (maxcount == REG_INFTY) | |
1188 | && data && ++data->whilem_c < 16) { | |
1189 | /* This stays as CURLYX, we can put the count/of pair. */ | |
2c2d71f5 JH |
1190 | /* Find WHILEM (as in regexec.c) */ |
1191 | regnode *nxt = oscan + NEXT_OFF(oscan); | |
1192 | ||
1193 | if (OP(PREVOPER(nxt)) == NOTHING) /* LONGJMP */ | |
1194 | nxt += ARG(nxt); | |
1195 | PREVOPER(nxt)->flags = data->whilem_c | |
830247a4 | 1196 | | (RExC_whilem_seen << 4); /* On WHILEM */ |
2c2d71f5 | 1197 | } |
b81d288d | 1198 | if (data && fl & (SF_HAS_PAR|SF_IN_PAR)) |
c277df42 IZ |
1199 | pars++; |
1200 | if (flags & SCF_DO_SUBSTR) { | |
1201 | SV *last_str = Nullsv; | |
1202 | int counted = mincount != 0; | |
1203 | ||
1204 | if (data->last_end > 0 && mincount != 0) { /* Ends with a string. */ | |
b81d288d | 1205 | I32 b = pos_before >= data->last_start_min |
c277df42 IZ |
1206 | ? pos_before : data->last_start_min; |
1207 | STRLEN l; | |
1208 | char *s = SvPV(data->last_found, l); | |
a0ed51b3 LW |
1209 | I32 old = b - data->last_start_min; |
1210 | ||
1211 | if (UTF) | |
1212 | old = utf8_hop((U8*)s, old) - (U8*)s; | |
c277df42 | 1213 | |
a0ed51b3 | 1214 | l -= old; |
c277df42 | 1215 | /* Get the added string: */ |
79cb57f6 | 1216 | last_str = newSVpvn(s + old, l); |
c277df42 IZ |
1217 | if (deltanext == 0 && pos_before == b) { |
1218 | /* What was added is a constant string */ | |
1219 | if (mincount > 1) { | |
1220 | SvGROW(last_str, (mincount * l) + 1); | |
b81d288d | 1221 | repeatcpy(SvPVX(last_str) + l, |
c277df42 IZ |
1222 | SvPVX(last_str), l, mincount - 1); |
1223 | SvCUR(last_str) *= mincount; | |
1224 | /* Add additional parts. */ | |
b81d288d | 1225 | SvCUR_set(data->last_found, |
c277df42 IZ |
1226 | SvCUR(data->last_found) - l); |
1227 | sv_catsv(data->last_found, last_str); | |
1228 | data->last_end += l * (mincount - 1); | |
1229 | } | |
2a8d9689 HS |
1230 | } else { |
1231 | /* start offset must point into the last copy */ | |
1232 | data->last_start_min += minnext * (mincount - 1); | |
4b2cff9a HS |
1233 | data->last_start_max += is_inf ? 0 : (maxcount - 1) |
1234 | * (minnext + data->pos_delta); | |
c277df42 IZ |
1235 | } |
1236 | } | |
1237 | /* It is counted once already... */ | |
1238 | data->pos_min += minnext * (mincount - counted); | |
1239 | data->pos_delta += - counted * deltanext + | |
1240 | (minnext + deltanext) * maxcount - minnext * mincount; | |
1241 | if (mincount != maxcount) { | |
653099ff GS |
1242 | /* Cannot extend fixed substrings found inside |
1243 | the group. */ | |
830247a4 | 1244 | scan_commit(pRExC_state,data); |
c277df42 IZ |
1245 | if (mincount && last_str) { |
1246 | sv_setsv(data->last_found, last_str); | |
1247 | data->last_end = data->pos_min; | |
b81d288d | 1248 | data->last_start_min = |
a0ed51b3 | 1249 | data->pos_min - CHR_SVLEN(last_str); |
b81d288d AB |
1250 | data->last_start_max = is_inf |
1251 | ? I32_MAX | |
c277df42 | 1252 | : data->pos_min + data->pos_delta |
a0ed51b3 | 1253 | - CHR_SVLEN(last_str); |
c277df42 IZ |
1254 | } |
1255 | data->longest = &(data->longest_float); | |
1256 | } | |
aca2d497 | 1257 | SvREFCNT_dec(last_str); |
c277df42 | 1258 | } |
405ff068 | 1259 | if (data && (fl & SF_HAS_EVAL)) |
c277df42 IZ |
1260 | data->flags |= SF_HAS_EVAL; |
1261 | optimize_curly_tail: | |
c277df42 | 1262 | if (OP(oscan) != CURLYX) { |
22c35a8c | 1263 | while (PL_regkind[(U8)OP(next = regnext(oscan))] == NOTHING |
c277df42 IZ |
1264 | && NEXT_OFF(next)) |
1265 | NEXT_OFF(oscan) += NEXT_OFF(next); | |
1266 | } | |
c277df42 | 1267 | continue; |
653099ff | 1268 | default: /* REF and CLUMP only? */ |
c277df42 | 1269 | if (flags & SCF_DO_SUBSTR) { |
830247a4 | 1270 | scan_commit(pRExC_state,data); /* Cannot expect anything... */ |
c277df42 IZ |
1271 | data->longest = &(data->longest_float); |
1272 | } | |
aca2d497 | 1273 | is_inf = is_inf_internal = 1; |
653099ff | 1274 | if (flags & SCF_DO_STCLASS_OR) |
830247a4 | 1275 | cl_anything(pRExC_state, data->start_class); |
653099ff | 1276 | flags &= ~SCF_DO_STCLASS; |
c277df42 IZ |
1277 | break; |
1278 | } | |
a0ed51b3 | 1279 | } |
ffc61ed2 | 1280 | else if (strchr((char*)PL_simple,OP(scan))) { |
9c5ffd7c | 1281 | int value = 0; |
653099ff | 1282 | |
c277df42 | 1283 | if (flags & SCF_DO_SUBSTR) { |
830247a4 | 1284 | scan_commit(pRExC_state,data); |
c277df42 IZ |
1285 | data->pos_min++; |
1286 | } | |
1287 | min++; | |
653099ff GS |
1288 | if (flags & SCF_DO_STCLASS) { |
1289 | data->start_class->flags &= ~ANYOF_EOS; /* No match on empty */ | |
1290 | ||
1291 | /* Some of the logic below assumes that switching | |
1292 | locale on will only add false positives. */ | |
1293 | switch (PL_regkind[(U8)OP(scan)]) { | |
653099ff | 1294 | case SANY: |
653099ff GS |
1295 | default: |
1296 | do_default: | |
1297 | /* Perl_croak(aTHX_ "panic: unexpected simple REx opcode %d", OP(scan)); */ | |
1298 | if (flags & SCF_DO_STCLASS_OR) /* Allow everything */ | |
830247a4 | 1299 | cl_anything(pRExC_state, data->start_class); |
653099ff GS |
1300 | break; |
1301 | case REG_ANY: | |
1302 | if (OP(scan) == SANY) | |
1303 | goto do_default; | |
1304 | if (flags & SCF_DO_STCLASS_OR) { /* Everything but \n */ | |
1305 | value = (ANYOF_BITMAP_TEST(data->start_class,'\n') | |
1306 | || (data->start_class->flags & ANYOF_CLASS)); | |
830247a4 | 1307 | cl_anything(pRExC_state, data->start_class); |
653099ff GS |
1308 | } |
1309 | if (flags & SCF_DO_STCLASS_AND || !value) | |
1310 | ANYOF_BITMAP_CLEAR(data->start_class,'\n'); | |
1311 | break; | |
1312 | case ANYOF: | |
1313 | if (flags & SCF_DO_STCLASS_AND) | |
1314 | cl_and(data->start_class, | |
1315 | (struct regnode_charclass_class*)scan); | |
1316 | else | |
830247a4 | 1317 | cl_or(pRExC_state, data->start_class, |
653099ff GS |
1318 | (struct regnode_charclass_class*)scan); |
1319 | break; | |
1320 | case ALNUM: | |
1321 | if (flags & SCF_DO_STCLASS_AND) { | |
1322 | if (!(data->start_class->flags & ANYOF_LOCALE)) { | |
1323 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NALNUM); | |
1324 | for (value = 0; value < 256; value++) | |
1325 | if (!isALNUM(value)) | |
1326 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1327 | } | |
1328 | } | |
1329 | else { | |
1330 | if (data->start_class->flags & ANYOF_LOCALE) | |
1331 | ANYOF_CLASS_SET(data->start_class,ANYOF_ALNUM); | |
1332 | else { | |
1333 | for (value = 0; value < 256; value++) | |
1334 | if (isALNUM(value)) | |
b81d288d | 1335 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1336 | } |
1337 | } | |
1338 | break; | |
1339 | case ALNUML: | |
1340 | if (flags & SCF_DO_STCLASS_AND) { | |
1341 | if (data->start_class->flags & ANYOF_LOCALE) | |
1342 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NALNUM); | |
1343 | } | |
1344 | else { | |
1345 | ANYOF_CLASS_SET(data->start_class,ANYOF_ALNUM); | |
1346 | data->start_class->flags |= ANYOF_LOCALE; | |
1347 | } | |
1348 | break; | |
1349 | case NALNUM: | |
1350 | if (flags & SCF_DO_STCLASS_AND) { | |
1351 | if (!(data->start_class->flags & ANYOF_LOCALE)) { | |
1352 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_ALNUM); | |
1353 | for (value = 0; value < 256; value++) | |
1354 | if (isALNUM(value)) | |
1355 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1356 | } | |
1357 | } | |
1358 | else { | |
1359 | if (data->start_class->flags & ANYOF_LOCALE) | |
1360 | ANYOF_CLASS_SET(data->start_class,ANYOF_NALNUM); | |
1361 | else { | |
1362 | for (value = 0; value < 256; value++) | |
1363 | if (!isALNUM(value)) | |
b81d288d | 1364 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1365 | } |
1366 | } | |
1367 | break; | |
1368 | case NALNUML: | |
1369 | if (flags & SCF_DO_STCLASS_AND) { | |
1370 | if (data->start_class->flags & ANYOF_LOCALE) | |
1371 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_ALNUM); | |
1372 | } | |
1373 | else { | |
1374 | data->start_class->flags |= ANYOF_LOCALE; | |
1375 | ANYOF_CLASS_SET(data->start_class,ANYOF_NALNUM); | |
1376 | } | |
1377 | break; | |
1378 | case SPACE: | |
1379 | if (flags & SCF_DO_STCLASS_AND) { | |
1380 | if (!(data->start_class->flags & ANYOF_LOCALE)) { | |
1381 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NSPACE); | |
1382 | for (value = 0; value < 256; value++) | |
1383 | if (!isSPACE(value)) | |
1384 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1385 | } | |
1386 | } | |
1387 | else { | |
1388 | if (data->start_class->flags & ANYOF_LOCALE) | |
1389 | ANYOF_CLASS_SET(data->start_class,ANYOF_SPACE); | |
1390 | else { | |
1391 | for (value = 0; value < 256; value++) | |
1392 | if (isSPACE(value)) | |
b81d288d | 1393 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1394 | } |
1395 | } | |
1396 | break; | |
1397 | case SPACEL: | |
1398 | if (flags & SCF_DO_STCLASS_AND) { | |
1399 | if (data->start_class->flags & ANYOF_LOCALE) | |
1400 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NSPACE); | |
1401 | } | |
1402 | else { | |
1403 | data->start_class->flags |= ANYOF_LOCALE; | |
1404 | ANYOF_CLASS_SET(data->start_class,ANYOF_SPACE); | |
1405 | } | |
1406 | break; | |
1407 | case NSPACE: | |
1408 | if (flags & SCF_DO_STCLASS_AND) { | |
1409 | if (!(data->start_class->flags & ANYOF_LOCALE)) { | |
1410 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_SPACE); | |
1411 | for (value = 0; value < 256; value++) | |
1412 | if (isSPACE(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_NSPACE); | |
1419 | else { | |
1420 | for (value = 0; value < 256; value++) | |
1421 | if (!isSPACE(value)) | |
b81d288d | 1422 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1423 | } |
1424 | } | |
1425 | break; | |
1426 | case NSPACEL: | |
1427 | if (flags & SCF_DO_STCLASS_AND) { | |
1428 | if (data->start_class->flags & ANYOF_LOCALE) { | |
1429 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_SPACE); | |
1430 | for (value = 0; value < 256; value++) | |
1431 | if (!isSPACE(value)) | |
1432 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1433 | } | |
1434 | } | |
1435 | else { | |
1436 | data->start_class->flags |= ANYOF_LOCALE; | |
1437 | ANYOF_CLASS_SET(data->start_class,ANYOF_NSPACE); | |
1438 | } | |
1439 | break; | |
1440 | case DIGIT: | |
1441 | if (flags & SCF_DO_STCLASS_AND) { | |
1442 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_NDIGIT); | |
1443 | for (value = 0; value < 256; value++) | |
1444 | if (!isDIGIT(value)) | |
1445 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1446 | } | |
1447 | else { | |
1448 | if (data->start_class->flags & ANYOF_LOCALE) | |
1449 | ANYOF_CLASS_SET(data->start_class,ANYOF_DIGIT); | |
1450 | else { | |
1451 | for (value = 0; value < 256; value++) | |
1452 | if (isDIGIT(value)) | |
b81d288d | 1453 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1454 | } |
1455 | } | |
1456 | break; | |
1457 | case NDIGIT: | |
1458 | if (flags & SCF_DO_STCLASS_AND) { | |
1459 | ANYOF_CLASS_CLEAR(data->start_class,ANYOF_DIGIT); | |
1460 | for (value = 0; value < 256; value++) | |
1461 | if (isDIGIT(value)) | |
1462 | ANYOF_BITMAP_CLEAR(data->start_class, value); | |
1463 | } | |
1464 | else { | |
1465 | if (data->start_class->flags & ANYOF_LOCALE) | |
1466 | ANYOF_CLASS_SET(data->start_class,ANYOF_NDIGIT); | |
1467 | else { | |
1468 | for (value = 0; value < 256; value++) | |
1469 | if (!isDIGIT(value)) | |
b81d288d | 1470 | ANYOF_BITMAP_SET(data->start_class, value); |
653099ff GS |
1471 | } |
1472 | } | |
1473 | break; | |
1474 | } | |
1475 | if (flags & SCF_DO_STCLASS_OR) | |
1476 | cl_and(data->start_class, &and_with); | |
1477 | flags &= ~SCF_DO_STCLASS; | |
1478 | } | |
a0ed51b3 | 1479 | } |
22c35a8c | 1480 | else if (PL_regkind[(U8)OP(scan)] == EOL && flags & SCF_DO_SUBSTR) { |
c277df42 IZ |
1481 | data->flags |= (OP(scan) == MEOL |
1482 | ? SF_BEFORE_MEOL | |
1483 | : SF_BEFORE_SEOL); | |
a0ed51b3 | 1484 | } |
653099ff GS |
1485 | else if ( PL_regkind[(U8)OP(scan)] == BRANCHJ |
1486 | /* Lookbehind, or need to calculate parens/evals/stclass: */ | |
1487 | && (scan->flags || data || (flags & SCF_DO_STCLASS)) | |
c277df42 | 1488 | && (OP(scan) == IFMATCH || OP(scan) == UNLESSM)) { |
653099ff | 1489 | /* Lookahead/lookbehind */ |
cb434fcc | 1490 | I32 deltanext, minnext, fake = 0; |
c277df42 | 1491 | regnode *nscan; |
653099ff GS |
1492 | struct regnode_charclass_class intrnl; |
1493 | int f = 0; | |
c277df42 IZ |
1494 | |
1495 | data_fake.flags = 0; | |
b81d288d | 1496 | if (data) { |
2c2d71f5 | 1497 | data_fake.whilem_c = data->whilem_c; |
cb434fcc IZ |
1498 | data_fake.last_closep = data->last_closep; |
1499 | } | |
1500 | else | |
1501 | data_fake.last_closep = &fake; | |
653099ff GS |
1502 | if ( flags & SCF_DO_STCLASS && !scan->flags |
1503 | && OP(scan) == IFMATCH ) { /* Lookahead */ | |
830247a4 | 1504 | cl_init(pRExC_state, &intrnl); |
653099ff | 1505 | data_fake.start_class = &intrnl; |
e1901655 | 1506 | f |= SCF_DO_STCLASS_AND; |
653099ff | 1507 | } |
e1901655 IZ |
1508 | if (flags & SCF_WHILEM_VISITED_POS) |
1509 | f |= SCF_WHILEM_VISITED_POS; | |
c277df42 IZ |
1510 | next = regnext(scan); |
1511 | nscan = NEXTOPER(NEXTOPER(scan)); | |
830247a4 | 1512 | minnext = study_chunk(pRExC_state, &nscan, &deltanext, last, &data_fake, f); |
c277df42 IZ |
1513 | if (scan->flags) { |
1514 | if (deltanext) { | |
9baa0206 | 1515 | vFAIL("Variable length lookbehind not implemented"); |
a0ed51b3 LW |
1516 | } |
1517 | else if (minnext > U8_MAX) { | |
9baa0206 | 1518 | vFAIL2("Lookbehind longer than %"UVuf" not implemented", (UV)U8_MAX); |
c277df42 IZ |
1519 | } |
1520 | scan->flags = minnext; | |
1521 | } | |
1522 | if (data && data_fake.flags & (SF_HAS_PAR|SF_IN_PAR)) | |
1523 | pars++; | |
405ff068 | 1524 | if (data && (data_fake.flags & SF_HAS_EVAL)) |
c277df42 | 1525 | data->flags |= SF_HAS_EVAL; |
2c2d71f5 JH |
1526 | if (data) |
1527 | data->whilem_c = data_fake.whilem_c; | |
e1901655 | 1528 | if (f & SCF_DO_STCLASS_AND) { |
653099ff GS |
1529 | int was = (data->start_class->flags & ANYOF_EOS); |
1530 | ||
1531 | cl_and(data->start_class, &intrnl); | |
1532 | if (was) | |
1533 | data->start_class->flags |= ANYOF_EOS; | |
1534 | } | |
a0ed51b3 LW |
1535 | } |
1536 | else if (OP(scan) == OPEN) { | |
c277df42 | 1537 | pars++; |
a0ed51b3 | 1538 | } |
cb434fcc IZ |
1539 | else if (OP(scan) == CLOSE) { |
1540 | if (ARG(scan) == is_par) { | |
1541 | next = regnext(scan); | |
c277df42 | 1542 | |
cb434fcc IZ |
1543 | if ( next && (OP(next) != WHILEM) && next < last) |
1544 | is_par = 0; /* Disable optimization */ | |
1545 | } | |
1546 | if (data) | |
1547 | *(data->last_closep) = ARG(scan); | |
a0ed51b3 LW |
1548 | } |
1549 | else if (OP(scan) == EVAL) { | |
c277df42 IZ |
1550 | if (data) |
1551 | data->flags |= SF_HAS_EVAL; | |
1552 | } | |
96776eda | 1553 | else if (OP(scan) == LOGICAL && scan->flags == 2) { /* Embedded follows */ |
0f5d15d6 | 1554 | if (flags & SCF_DO_SUBSTR) { |
830247a4 | 1555 | scan_commit(pRExC_state,data); |
0f5d15d6 IZ |
1556 | data->longest = &(data->longest_float); |
1557 | } | |
1558 | is_inf = is_inf_internal = 1; | |
653099ff | 1559 | if (flags & SCF_DO_STCLASS_OR) /* Allow everything */ |
830247a4 | 1560 | cl_anything(pRExC_state, data->start_class); |
96776eda | 1561 | flags &= ~SCF_DO_STCLASS; |
0f5d15d6 | 1562 | } |
c277df42 IZ |
1563 | /* Else: zero-length, ignore. */ |
1564 | scan = regnext(scan); | |
1565 | } | |
1566 | ||
1567 | finish: | |
1568 | *scanp = scan; | |
aca2d497 | 1569 | *deltap = is_inf_internal ? I32_MAX : delta; |
b81d288d | 1570 | if (flags & SCF_DO_SUBSTR && is_inf) |
c277df42 IZ |
1571 | data->pos_delta = I32_MAX - data->pos_min; |
1572 | if (is_par > U8_MAX) | |
1573 | is_par = 0; | |
1574 | if (is_par && pars==1 && data) { | |
1575 | data->flags |= SF_IN_PAR; | |
1576 | data->flags &= ~SF_HAS_PAR; | |
a0ed51b3 LW |
1577 | } |
1578 | else if (pars && data) { | |
c277df42 IZ |
1579 | data->flags |= SF_HAS_PAR; |
1580 | data->flags &= ~SF_IN_PAR; | |
1581 | } | |
653099ff GS |
1582 | if (flags & SCF_DO_STCLASS_OR) |
1583 | cl_and(data->start_class, &and_with); | |
c277df42 IZ |
1584 | return min; |
1585 | } | |
1586 | ||
76e3520e | 1587 | STATIC I32 |
830247a4 | 1588 | S_add_data(pTHX_ RExC_state_t *pRExC_state, I32 n, char *s) |
c277df42 | 1589 | { |
830247a4 | 1590 | if (RExC_rx->data) { |
b81d288d AB |
1591 | Renewc(RExC_rx->data, |
1592 | sizeof(*RExC_rx->data) + sizeof(void*) * (RExC_rx->data->count + n - 1), | |
c277df42 | 1593 | char, struct reg_data); |
830247a4 IZ |
1594 | Renew(RExC_rx->data->what, RExC_rx->data->count + n, U8); |
1595 | RExC_rx->data->count += n; | |
a0ed51b3 LW |
1596 | } |
1597 | else { | |
830247a4 | 1598 | Newc(1207, RExC_rx->data, sizeof(*RExC_rx->data) + sizeof(void*) * (n - 1), |
c277df42 | 1599 | char, struct reg_data); |
830247a4 IZ |
1600 | New(1208, RExC_rx->data->what, n, U8); |
1601 | RExC_rx->data->count = n; | |
c277df42 | 1602 | } |
830247a4 IZ |
1603 | Copy(s, RExC_rx->data->what + RExC_rx->data->count - n, n, U8); |
1604 | return RExC_rx->data->count - n; | |
c277df42 IZ |
1605 | } |
1606 | ||
d88dccdf | 1607 | void |
864dbfa3 | 1608 | Perl_reginitcolors(pTHX) |
d88dccdf | 1609 | { |
d88dccdf IZ |
1610 | int i = 0; |
1611 | char *s = PerlEnv_getenv("PERL_RE_COLORS"); | |
b81d288d | 1612 | |
d88dccdf IZ |
1613 | if (s) { |
1614 | PL_colors[0] = s = savepv(s); | |
1615 | while (++i < 6) { | |
1616 | s = strchr(s, '\t'); | |
1617 | if (s) { | |
1618 | *s = '\0'; | |
1619 | PL_colors[i] = ++s; | |
1620 | } | |
1621 | else | |
c712d376 | 1622 | PL_colors[i] = s = ""; |
d88dccdf IZ |
1623 | } |
1624 | } else { | |
b81d288d | 1625 | while (i < 6) |
d88dccdf IZ |
1626 | PL_colors[i++] = ""; |
1627 | } | |
1628 | PL_colorset = 1; | |
1629 | } | |
1630 | ||
8615cb43 | 1631 | |
a687059c | 1632 | /* |
e50aee73 | 1633 | - pregcomp - compile a regular expression into internal code |
a687059c LW |
1634 | * |
1635 | * We can't allocate space until we know how big the compiled form will be, | |
1636 | * but we can't compile it (and thus know how big it is) until we've got a | |
1637 | * place to put the code. So we cheat: we compile it twice, once with code | |
1638 | * generation turned off and size counting turned on, and once "for real". | |
1639 | * This also means that we don't allocate space until we are sure that the | |
1640 | * thing really will compile successfully, and we never have to move the | |
1641 | * code and thus invalidate pointers into it. (Note that it has to be in | |
1642 | * one piece because free() must be able to free it all.) [NB: not true in perl] | |
1643 | * | |
1644 | * Beware that the optimization-preparation code in here knows about some | |
1645 | * of the structure of the compiled regexp. [I'll say.] | |
1646 | */ | |
1647 | regexp * | |
864dbfa3 | 1648 | Perl_pregcomp(pTHX_ char *exp, char *xend, PMOP *pm) |
a687059c | 1649 | { |
a0d0e21e | 1650 | register regexp *r; |
c277df42 | 1651 | regnode *scan; |
c277df42 | 1652 | regnode *first; |
a0d0e21e | 1653 | I32 flags; |
a0d0e21e LW |
1654 | I32 minlen = 0; |
1655 | I32 sawplus = 0; | |
1656 | I32 sawopen = 0; | |
2c2d71f5 | 1657 | scan_data_t data; |
830247a4 IZ |
1658 | RExC_state_t RExC_state; |
1659 | RExC_state_t *pRExC_state = &RExC_state; | |
a0d0e21e LW |
1660 | |
1661 | if (exp == NULL) | |
c277df42 | 1662 | FAIL("NULL regexp argument"); |
a0d0e21e | 1663 | |
830247a4 | 1664 | /* XXXX This looks very suspicious... */ |
1aa99e6b IH |
1665 | if (pm->op_pmdynflags & PMdf_CMP_UTF8) |
1666 | RExC_utf8 = 1; | |
a0ed51b3 | 1667 | else |
1aa99e6b | 1668 | RExC_utf8 = 0; |
a0ed51b3 | 1669 | |
5cfc7842 | 1670 | RExC_precomp = exp; |
35ef4773 | 1671 | DEBUG_r(if (!PL_colorset) reginitcolors()); |
2c2d71f5 | 1672 | DEBUG_r(PerlIO_printf(Perl_debug_log, "%sCompiling REx%s `%s%*s%s'\n", |
d88dccdf | 1673 | PL_colors[4],PL_colors[5],PL_colors[0], |
830247a4 IZ |
1674 | (int)(xend - exp), RExC_precomp, PL_colors[1])); |
1675 | RExC_flags16 = pm->op_pmflags; | |
1676 | RExC_sawback = 0; | |
bbce6d69 | 1677 | |
830247a4 IZ |
1678 | RExC_seen = 0; |
1679 | RExC_seen_zerolen = *exp == '^' ? -1 : 0; | |
1680 | RExC_seen_evals = 0; | |
1681 | RExC_extralen = 0; | |
c277df42 | 1682 | |
bbce6d69 | 1683 | /* First pass: determine size, legality. */ |
830247a4 | 1684 | RExC_parse = exp; |
fac92740 | 1685 | RExC_start = exp; |
830247a4 IZ |
1686 | RExC_end = xend; |
1687 | RExC_naughty = 0; | |
1688 | RExC_npar = 1; | |
1689 | RExC_size = 0L; | |
1690 | RExC_emit = &PL_regdummy; | |
1691 | RExC_whilem_seen = 0; | |
85ddcde9 JH |
1692 | #if 0 /* REGC() is (currently) a NOP at the first pass. |
1693 | * Clever compilers notice this and complain. --jhi */ | |
830247a4 | 1694 | REGC((U8)REG_MAGIC, (char*)RExC_emit); |
85ddcde9 | 1695 | #endif |
830247a4 | 1696 | if (reg(pRExC_state, 0, &flags) == NULL) { |
830247a4 | 1697 | RExC_precomp = Nullch; |
a0d0e21e LW |
1698 | return(NULL); |
1699 | } | |
830247a4 | 1700 | DEBUG_r(PerlIO_printf(Perl_debug_log, "size %"IVdf" ", (IV)RExC_size)); |
c277df42 | 1701 | |
c277df42 IZ |
1702 | /* Small enough for pointer-storage convention? |
1703 | If extralen==0, this means that we will not need long jumps. */ | |
830247a4 IZ |
1704 | if (RExC_size >= 0x10000L && RExC_extralen) |
1705 | RExC_size += RExC_extralen; | |
c277df42 | 1706 | else |
830247a4 IZ |
1707 | RExC_extralen = 0; |
1708 | if (RExC_whilem_seen > 15) | |
1709 | RExC_whilem_seen = 15; | |
a0d0e21e | 1710 | |
bbce6d69 | 1711 | /* Allocate space and initialize. */ |
830247a4 | 1712 | Newc(1001, r, sizeof(regexp) + (unsigned)RExC_size * sizeof(regnode), |
c277df42 | 1713 | char, regexp); |
a0d0e21e | 1714 | if (r == NULL) |
b45f050a JF |
1715 | FAIL("Regexp out of space"); |
1716 | ||
0f79a09d GS |
1717 | #ifdef DEBUGGING |
1718 | /* avoid reading uninitialized memory in DEBUGGING code in study_chunk() */ | |
830247a4 | 1719 | Zero(r, sizeof(regexp) + (unsigned)RExC_size * sizeof(regnode), char); |
0f79a09d | 1720 | #endif |
c277df42 | 1721 | r->refcnt = 1; |
bbce6d69 | 1722 | r->prelen = xend - exp; |
5cfc7842 | 1723 | r->precomp = savepvn(RExC_precomp, r->prelen); |
cf93c79d IZ |
1724 | r->subbeg = NULL; |
1725 | r->reganch = pm->op_pmflags & PMf_COMPILETIME; | |
830247a4 | 1726 | r->nparens = RExC_npar - 1; /* set early to validate backrefs */ |
4327152a IZ |
1727 | |
1728 | r->substrs = 0; /* Useful during FAIL. */ | |
1729 | r->startp = 0; /* Useful during FAIL. */ | |
1730 | r->endp = 0; /* Useful during FAIL. */ | |
1731 | ||
fac92740 MJD |
1732 | Newz(1304, r->offsets, 2*RExC_size+1, U32); /* MJD 20001228 */ |
1733 | if (r->offsets) { | |
1734 | r->offsets[0] = RExC_size; | |
1735 | } | |
1736 | DEBUG_r(PerlIO_printf(Perl_debug_log, | |
392fbf5d | 1737 | "%s %"UVuf" bytes for offset annotations.\n", |
fac92740 | 1738 | r->offsets ? "Got" : "Couldn't get", |
392fbf5d | 1739 | (UV)((2*RExC_size+1) * sizeof(U32)))); |
fac92740 | 1740 | |
830247a4 | 1741 | RExC_rx = r; |
bbce6d69 | 1742 | |
1743 | /* Second pass: emit code. */ | |
830247a4 IZ |
1744 | RExC_parse = exp; |
1745 | RExC_end = xend; | |
1746 | RExC_naughty = 0; | |
1747 | RExC_npar = 1; | |
fac92740 | 1748 | RExC_emit_start = r->program; |
830247a4 | 1749 | RExC_emit = r->program; |
2cd61cdb | 1750 | /* Store the count of eval-groups for security checks: */ |
830247a4 IZ |
1751 | RExC_emit->next_off = ((RExC_seen_evals > U16_MAX) ? U16_MAX : RExC_seen_evals); |
1752 | REGC((U8)REG_MAGIC, (char*) RExC_emit++); | |
c277df42 | 1753 | r->data = 0; |
830247a4 | 1754 | if (reg(pRExC_state, 0, &flags) == NULL) |
a0d0e21e LW |
1755 | return(NULL); |
1756 | ||
1757 | /* Dig out information for optimizations. */ | |
cf93c79d | 1758 | r->reganch = pm->op_pmflags & PMf_COMPILETIME; /* Again? */ |
830247a4 | 1759 | pm->op_pmflags = RExC_flags16; |
a0ed51b3 LW |
1760 | if (UTF) |
1761 | r->reganch |= ROPT_UTF8; | |
c277df42 | 1762 | r->regstclass = NULL; |
830247a4 | 1763 | if (RExC_naughty >= 10) /* Probably an expensive pattern. */ |
a0ed51b3 | 1764 | r->reganch |= ROPT_NAUGHTY; |
c277df42 | 1765 | scan = r->program + 1; /* First BRANCH. */ |
2779dcf1 IZ |
1766 | |
1767 | /* XXXX To minimize changes to RE engine we always allocate | |
1768 | 3-units-long substrs field. */ | |
1769 | Newz(1004, r->substrs, 1, struct reg_substr_data); | |
1770 | ||
2c2d71f5 | 1771 | StructCopy(&zero_scan_data, &data, scan_data_t); |
653099ff | 1772 | /* XXXX Should not we check for something else? Usually it is OPEN1... */ |
c277df42 | 1773 | if (OP(scan) != BRANCH) { /* Only one top-level choice. */ |
c277df42 | 1774 | I32 fake; |
c5254dd6 | 1775 | STRLEN longest_float_length, longest_fixed_length; |
653099ff GS |
1776 | struct regnode_charclass_class ch_class; |
1777 | int stclass_flag; | |
cb434fcc | 1778 | I32 last_close = 0; |
a0d0e21e LW |
1779 | |
1780 | first = scan; | |
c277df42 | 1781 | /* Skip introductions and multiplicators >= 1. */ |
a0d0e21e | 1782 | while ((OP(first) == OPEN && (sawopen = 1)) || |
653099ff | 1783 | /* An OR of *one* alternative - should not happen now. */ |
a0d0e21e LW |
1784 | (OP(first) == BRANCH && OP(regnext(first)) != BRANCH) || |
1785 | (OP(first) == PLUS) || | |
1786 | (OP(first) == MINMOD) || | |
653099ff | 1787 | /* An {n,m} with n>0 */ |
22c35a8c | 1788 | (PL_regkind[(U8)OP(first)] == CURLY && ARG1(first) > 0) ) { |
a0d0e21e LW |
1789 | if (OP(first) == PLUS) |
1790 | sawplus = 1; | |
1791 | else | |
1792 | first += regarglen[(U8)OP(first)]; | |
1793 | first = NEXTOPER(first); | |
a687059c LW |
1794 | } |
1795 | ||
a0d0e21e LW |
1796 | /* Starting-point info. */ |
1797 | again: | |
653099ff | 1798 | if (PL_regkind[(U8)OP(first)] == EXACT) { |
1aa99e6b IH |
1799 | if (OP(first) == EXACT) |
1800 | ; /* Empty, get anchored substr later. */ | |
1801 | else if ((OP(first) == EXACTF || OP(first) == EXACTFL)) | |
b3c9acc1 IZ |
1802 | r->regstclass = first; |
1803 | } | |
653099ff | 1804 | else if (strchr((char*)PL_simple,OP(first))) |
a0d0e21e | 1805 | r->regstclass = first; |
22c35a8c GS |
1806 | else if (PL_regkind[(U8)OP(first)] == BOUND || |
1807 | PL_regkind[(U8)OP(first)] == NBOUND) | |
a0d0e21e | 1808 | r->regstclass = first; |
22c35a8c | 1809 | else if (PL_regkind[(U8)OP(first)] == BOL) { |
cad2e5aa JH |
1810 | r->reganch |= (OP(first) == MBOL |
1811 | ? ROPT_ANCH_MBOL | |
1812 | : (OP(first) == SBOL | |
1813 | ? ROPT_ANCH_SBOL | |
1814 | : ROPT_ANCH_BOL)); | |
a0d0e21e | 1815 | first = NEXTOPER(first); |
774d564b | 1816 | goto again; |
1817 | } | |
1818 | else if (OP(first) == GPOS) { | |
1819 | r->reganch |= ROPT_ANCH_GPOS; | |
1820 | first = NEXTOPER(first); | |
1821 | goto again; | |
a0d0e21e LW |
1822 | } |
1823 | else if ((OP(first) == STAR && | |
22c35a8c | 1824 | PL_regkind[(U8)OP(NEXTOPER(first))] == REG_ANY) && |
a0d0e21e LW |
1825 | !(r->reganch & ROPT_ANCH) ) |
1826 | { | |
1827 | /* turn .* into ^.* with an implied $*=1 */ | |
cad2e5aa JH |
1828 | int type = OP(NEXTOPER(first)); |
1829 | ||
ffc61ed2 | 1830 | if (type == REG_ANY) |
cad2e5aa JH |
1831 | type = ROPT_ANCH_MBOL; |
1832 | else | |
1833 | type = ROPT_ANCH_SBOL; | |
1834 | ||
1835 | r->reganch |= type | ROPT_IMPLICIT; | |
a0d0e21e | 1836 | first = NEXTOPER(first); |
774d564b | 1837 | goto again; |
a0d0e21e | 1838 | } |
b81d288d | 1839 | if (sawplus && (!sawopen || !RExC_sawback) |
830247a4 | 1840 | && !(RExC_seen & REG_SEEN_EVAL)) /* May examine pos and $& */ |
cad2e5aa JH |
1841 | /* x+ must match at the 1st pos of run of x's */ |
1842 | r->reganch |= ROPT_SKIP; | |
a0d0e21e | 1843 | |
c277df42 | 1844 | /* Scan is after the zeroth branch, first is atomic matcher. */ |
b81d288d | 1845 | DEBUG_r(PerlIO_printf(Perl_debug_log, "first at %"IVdf"\n", |
b900a521 | 1846 | (IV)(first - scan + 1))); |
a0d0e21e LW |
1847 | /* |
1848 | * If there's something expensive in the r.e., find the | |
1849 | * longest literal string that must appear and make it the | |
1850 | * regmust. Resolve ties in favor of later strings, since | |
1851 | * the regstart check works with the beginning of the r.e. | |
1852 | * and avoiding duplication strengthens checking. Not a | |
1853 | * strong reason, but sufficient in the absence of others. | |
1854 | * [Now we resolve ties in favor of the earlier string if | |
c277df42 | 1855 | * it happens that c_offset_min has been invalidated, since the |
a0d0e21e LW |
1856 | * earlier string may buy us something the later one won't.] |
1857 | */ | |
a0d0e21e | 1858 | minlen = 0; |
a687059c | 1859 | |
79cb57f6 GS |
1860 | data.longest_fixed = newSVpvn("",0); |
1861 | data.longest_float = newSVpvn("",0); | |
1862 | data.last_found = newSVpvn("",0); | |
c277df42 IZ |
1863 | data.longest = &(data.longest_fixed); |
1864 | first = scan; | |
653099ff | 1865 | if (!r->regstclass) { |
830247a4 | 1866 | cl_init(pRExC_state, &ch_class); |
653099ff GS |
1867 | data.start_class = &ch_class; |
1868 | stclass_flag = SCF_DO_STCLASS_AND; | |
1869 | } else /* XXXX Check for BOUND? */ | |
1870 | stclass_flag = 0; | |
cb434fcc | 1871 | data.last_closep = &last_close; |
653099ff | 1872 | |
830247a4 | 1873 | minlen = study_chunk(pRExC_state, &first, &fake, scan + RExC_size, /* Up to end */ |
e1901655 | 1874 | &data, SCF_DO_SUBSTR | SCF_WHILEM_VISITED_POS | stclass_flag); |
830247a4 | 1875 | if ( RExC_npar == 1 && data.longest == &(data.longest_fixed) |
b81d288d | 1876 | && data.last_start_min == 0 && data.last_end > 0 |
830247a4 IZ |
1877 | && !RExC_seen_zerolen |
1878 | && (!(RExC_seen & REG_SEEN_GPOS) || (r->reganch & ROPT_ANCH_GPOS))) | |
c277df42 | 1879 | r->reganch |= ROPT_CHECK_ALL; |
830247a4 | 1880 | scan_commit(pRExC_state, &data); |
c277df42 IZ |
1881 | SvREFCNT_dec(data.last_found); |
1882 | ||
a0ed51b3 | 1883 | longest_float_length = CHR_SVLEN(data.longest_float); |
c5254dd6 | 1884 | if (longest_float_length |
c277df42 IZ |
1885 | || (data.flags & SF_FL_BEFORE_EOL |
1886 | && (!(data.flags & SF_FL_BEFORE_MEOL) | |
830247a4 | 1887 | || (RExC_flags16 & PMf_MULTILINE)))) { |
cf93c79d IZ |
1888 | int t; |
1889 | ||
a0ed51b3 | 1890 | if (SvCUR(data.longest_fixed) /* ok to leave SvCUR */ |
aca2d497 IZ |
1891 | && data.offset_fixed == data.offset_float_min |
1892 | && SvCUR(data.longest_fixed) == SvCUR(data.longest_float)) | |
1893 | goto remove_float; /* As in (a)+. */ | |
1894 | ||
c277df42 IZ |
1895 | r->float_substr = data.longest_float; |
1896 | r->float_min_offset = data.offset_float_min; | |
1897 | r->float_max_offset = data.offset_float_max; | |
cf93c79d IZ |
1898 | t = (data.flags & SF_FL_BEFORE_EOL /* Can't have SEOL and MULTI */ |
1899 | && (!(data.flags & SF_FL_BEFORE_MEOL) | |
830247a4 | 1900 | || (RExC_flags16 & PMf_MULTILINE))); |
cf93c79d | 1901 | fbm_compile(r->float_substr, t ? FBMcf_TAIL : 0); |
a0ed51b3 LW |
1902 | } |
1903 | else { | |
aca2d497 | 1904 | remove_float: |
c277df42 IZ |
1905 | r->float_substr = Nullsv; |
1906 | SvREFCNT_dec(data.longest_float); | |
c5254dd6 | 1907 | longest_float_length = 0; |
a0d0e21e | 1908 | } |
c277df42 | 1909 | |
a0ed51b3 | 1910 | longest_fixed_length = CHR_SVLEN(data.longest_fixed); |
c5254dd6 | 1911 | if (longest_fixed_length |
c277df42 IZ |
1912 | || (data.flags & SF_FIX_BEFORE_EOL /* Cannot have SEOL and MULTI */ |
1913 | && (!(data.flags & SF_FIX_BEFORE_MEOL) | |
830247a4 | 1914 | || (RExC_flags16 & PMf_MULTILINE)))) { |
cf93c79d IZ |
1915 | int t; |
1916 | ||
c277df42 IZ |
1917 | r->anchored_substr = data.longest_fixed; |
1918 | r->anchored_offset = data.offset_fixed; | |
cf93c79d IZ |
1919 | t = (data.flags & SF_FIX_BEFORE_EOL /* Can't have SEOL and MULTI */ |
1920 | && (!(data.flags & SF_FIX_BEFORE_MEOL) | |
830247a4 | 1921 | || (RExC_flags16 & PMf_MULTILINE))); |
cf93c79d | 1922 | fbm_compile(r->anchored_substr, t ? FBMcf_TAIL : 0); |
a0ed51b3 LW |
1923 | } |
1924 | else { | |
c277df42 IZ |
1925 | r->anchored_substr = Nullsv; |
1926 | SvREFCNT_dec(data.longest_fixed); | |
c5254dd6 | 1927 | longest_fixed_length = 0; |
a0d0e21e | 1928 | } |
b81d288d | 1929 | if (r->regstclass |
ffc61ed2 | 1930 | && (OP(r->regstclass) == REG_ANY || OP(r->regstclass) == SANY)) |
653099ff GS |
1931 | r->regstclass = NULL; |
1932 | if ((!r->anchored_substr || r->anchored_offset) && stclass_flag | |
1933 | && !(data.start_class->flags & ANYOF_EOS) | |
1934 | && !cl_is_anything(data.start_class)) { | |
830247a4 | 1935 | I32 n = add_data(pRExC_state, 1, "f"); |
653099ff | 1936 | |
b81d288d | 1937 | New(1006, RExC_rx->data->data[n], 1, |
653099ff GS |
1938 | struct regnode_charclass_class); |
1939 | StructCopy(data.start_class, | |
830247a4 | 1940 | (struct regnode_charclass_class*)RExC_rx->data->data[n], |
653099ff | 1941 | struct regnode_charclass_class); |
830247a4 | 1942 | r->regstclass = (regnode*)RExC_rx->data->data[n]; |
653099ff | 1943 | r->reganch &= ~ROPT_SKIP; /* Used in find_byclass(). */ |
ffc61ed2 | 1944 | PL_regdata = r->data; /* for regprop() */ |
9c5ffd7c JH |
1945 | DEBUG_r({ SV *sv = sv_newmortal(); |
1946 | regprop(sv, (regnode*)data.start_class); | |
1947 | PerlIO_printf(Perl_debug_log, | |
1948 | "synthetic stclass `%s'.\n", | |
1949 | SvPVX(sv));}); | |
653099ff | 1950 | } |
c277df42 IZ |
1951 | |
1952 | /* A temporary algorithm prefers floated substr to fixed one to dig more info. */ | |
c5254dd6 | 1953 | if (longest_fixed_length > longest_float_length) { |
c277df42 IZ |
1954 | r->check_substr = r->anchored_substr; |
1955 | r->check_offset_min = r->check_offset_max = r->anchored_offset; | |
1956 | if (r->reganch & ROPT_ANCH_SINGLE) | |
1957 | r->reganch |= ROPT_NOSCAN; | |
a0ed51b3 LW |
1958 | } |
1959 | else { | |
c277df42 IZ |
1960 | r->check_substr = r->float_substr; |
1961 | r->check_offset_min = data.offset_float_min; | |
1962 | r->check_offset_max = data.offset_float_max; | |
a0d0e21e | 1963 | } |
30382c73 IZ |
1964 | /* XXXX Currently intuiting is not compatible with ANCH_GPOS. |
1965 | This should be changed ASAP! */ | |
1966 | if (r->check_substr && !(r->reganch & ROPT_ANCH_GPOS)) { | |
cad2e5aa JH |
1967 | r->reganch |= RE_USE_INTUIT; |
1968 | if (SvTAIL(r->check_substr)) | |
1969 | r->reganch |= RE_INTUIT_TAIL; | |
1970 | } | |
a0ed51b3 LW |
1971 | } |
1972 | else { | |
c277df42 IZ |
1973 | /* Several toplevels. Best we can is to set minlen. */ |
1974 | I32 fake; | |
653099ff | 1975 | struct regnode_charclass_class ch_class; |
cb434fcc | 1976 | I32 last_close = 0; |
c277df42 IZ |
1977 | |
1978 | DEBUG_r(PerlIO_printf(Perl_debug_log, "\n")); | |
1979 | scan = r->program + 1; | |
830247a4 | 1980 | cl_init(pRExC_state, &ch_class); |
653099ff | 1981 | data.start_class = &ch_class; |
cb434fcc | 1982 | data.last_closep = &last_close; |
e1901655 | 1983 | minlen = study_chunk(pRExC_state, &scan, &fake, scan + RExC_size, &data, SCF_DO_STCLASS_AND|SCF_WHILEM_VISITED_POS); |
c277df42 | 1984 | r->check_substr = r->anchored_substr = r->float_substr = Nullsv; |
653099ff GS |
1985 | if (!(data.start_class->flags & ANYOF_EOS) |
1986 | && !cl_is_anything(data.start_class)) { | |
830247a4 | 1987 | I32 n = add_data(pRExC_state, 1, "f"); |
653099ff | 1988 | |
b81d288d | 1989 | New(1006, RExC_rx->data->data[n], 1, |
653099ff GS |
1990 | struct regnode_charclass_class); |
1991 | StructCopy(data.start_class, | |
830247a4 | 1992 | (struct regnode_charclass_class*)RExC_rx->data->data[n], |
653099ff | 1993 | struct regnode_charclass_class); |
830247a4 | 1994 | r->regstclass = (regnode*)RExC_rx->data->data[n]; |
653099ff | 1995 | r->reganch &= ~ROPT_SKIP; /* Used in find_byclass(). */ |
9c5ffd7c JH |
1996 | DEBUG_r({ SV* sv = sv_newmortal(); |
1997 | regprop(sv, (regnode*)data.start_class); | |
1998 | PerlIO_printf(Perl_debug_log, | |
1999 | "synthetic stclass `%s'.\n", | |
2000 | SvPVX(sv));}); | |
653099ff | 2001 | } |
a0d0e21e LW |
2002 | } |
2003 | ||
a0d0e21e | 2004 | r->minlen = minlen; |
b81d288d | 2005 | if (RExC_seen & REG_SEEN_GPOS) |
c277df42 | 2006 | r->reganch |= ROPT_GPOS_SEEN; |
830247a4 | 2007 | if (RExC_seen & REG_SEEN_LOOKBEHIND) |
c277df42 | 2008 | r->reganch |= ROPT_LOOKBEHIND_SEEN; |
830247a4 | 2009 | if (RExC_seen & REG_SEEN_EVAL) |
ce862d02 | 2010 | r->reganch |= ROPT_EVAL_SEEN; |
3baa4c62 JH |
2011 | if (RExC_seen & REG_SEEN_SANY) |
2012 | r->reganch |= ROPT_SANY_SEEN; | |
830247a4 IZ |
2013 | Newz(1002, r->startp, RExC_npar, I32); |
2014 | Newz(1002, r->endp, RExC_npar, I32); | |
ffc61ed2 | 2015 | PL_regdata = r->data; /* for regprop() */ |
a0d0e21e LW |
2016 | DEBUG_r(regdump(r)); |
2017 | return(r); | |
a687059c LW |
2018 | } |
2019 | ||
2020 | /* | |
2021 | - reg - regular expression, i.e. main body or parenthesized thing | |
2022 | * | |
2023 | * Caller must absorb opening parenthesis. | |
2024 | * | |
2025 | * Combining parenthesis handling with the base level of regular expression | |
2026 | * is a trifle forced, but the need to tie the tails of the branches to what | |
2027 | * follows makes it hard to avoid. | |
2028 | */ | |
76e3520e | 2029 | STATIC regnode * |
830247a4 | 2030 | S_reg(pTHX_ RExC_state_t *pRExC_state, I32 paren, I32 *flagp) |
c277df42 | 2031 | /* paren: Parenthesized? 0=top, 1=(, inside: changed to letter. */ |
a687059c | 2032 | { |
c277df42 IZ |
2033 | register regnode *ret; /* Will be the head of the group. */ |
2034 | register regnode *br; | |
2035 | register regnode *lastbr; | |
2036 | register regnode *ender = 0; | |
a0d0e21e | 2037 | register I32 parno = 0; |
830247a4 | 2038 | I32 flags, oregflags = RExC_flags16, have_branch = 0, open = 0; |
9d1d55b5 JP |
2039 | |
2040 | /* for (?g), (?gc), and (?o) warnings; warning | |
2041 | about (?c) will warn about (?g) -- japhy */ | |
2042 | ||
2043 | I32 wastedflags = 0x00, | |
2044 | wasted_o = 0x01, | |
2045 | wasted_g = 0x02, | |
2046 | wasted_gc = 0x02 | 0x04, | |
2047 | wasted_c = 0x04; | |
2048 | ||
fac92740 | 2049 | char * parse_start = RExC_parse; /* MJD */ |
830247a4 | 2050 | char *oregcomp_parse = RExC_parse; |
c277df42 | 2051 | char c; |
a0d0e21e | 2052 | |
821b33a5 | 2053 | *flagp = 0; /* Tentatively. */ |
a0d0e21e | 2054 | |
9d1d55b5 | 2055 | |
a0d0e21e LW |
2056 | /* Make an OPEN node, if parenthesized. */ |
2057 | if (paren) { | |
fac92740 | 2058 | if (*RExC_parse == '?') { /* (?...) */ |
ca9dfc88 IZ |
2059 | U16 posflags = 0, negflags = 0; |
2060 | U16 *flagsp = &posflags; | |
0f5d15d6 | 2061 | int logical = 0; |
830247a4 | 2062 | char *seqstart = RExC_parse; |
ca9dfc88 | 2063 | |
830247a4 IZ |
2064 | RExC_parse++; |
2065 | paren = *RExC_parse++; | |
c277df42 | 2066 | ret = NULL; /* For look-ahead/behind. */ |
a0d0e21e | 2067 | switch (paren) { |
fac92740 | 2068 | case '<': /* (?<...) */ |
830247a4 | 2069 | RExC_seen |= REG_SEEN_LOOKBEHIND; |
b81d288d | 2070 | if (*RExC_parse == '!') |
c277df42 | 2071 | paren = ','; |
b81d288d | 2072 | if (*RExC_parse != '=' && *RExC_parse != '!') |
c277df42 | 2073 | goto unknown; |
830247a4 | 2074 | RExC_parse++; |
fac92740 MJD |
2075 | case '=': /* (?=...) */ |
2076 | case '!': /* (?!...) */ | |
830247a4 | 2077 | RExC_seen_zerolen++; |
fac92740 MJD |
2078 | case ':': /* (?:...) */ |
2079 | case '>': /* (?>...) */ | |
a0d0e21e | 2080 | break; |
fac92740 MJD |
2081 | case '$': /* (?$...) */ |
2082 | case '@': /* (?@...) */ | |
8615cb43 | 2083 | vFAIL2("Sequence (?%c...) not implemented", (int)paren); |
a0d0e21e | 2084 | break; |
fac92740 | 2085 | case '#': /* (?#...) */ |
830247a4 IZ |
2086 | while (*RExC_parse && *RExC_parse != ')') |
2087 | RExC_parse++; | |
2088 | if (*RExC_parse != ')') | |
c277df42 | 2089 | FAIL("Sequence (?#... not terminated"); |
830247a4 | 2090 | nextchar(pRExC_state); |
a0d0e21e LW |
2091 | *flagp = TRYAGAIN; |
2092 | return NULL; | |
fac92740 | 2093 | case 'p': /* (?p...) */ |
f9373011 PM |
2094 | if (SIZE_ONLY && ckWARN2(WARN_DEPRECATED, WARN_REGEXP)) |
2095 | vWARNdep(RExC_parse, "(?p{}) is deprecated - use (??{})"); | |
8c8ad484 | 2096 | /* FALL THROUGH*/ |
fac92740 | 2097 | case '?': /* (??...) */ |
0f5d15d6 | 2098 | logical = 1; |
830247a4 | 2099 | paren = *RExC_parse++; |
0f5d15d6 | 2100 | /* FALL THROUGH */ |
fac92740 | 2101 | case '{': /* (?{...}) */ |
c277df42 | 2102 | { |
c277df42 IZ |
2103 | I32 count = 1, n = 0; |
2104 | char c; | |
830247a4 | 2105 | char *s = RExC_parse; |
c277df42 IZ |
2106 | SV *sv; |
2107 | OP_4tree *sop, *rop; | |
2108 | ||
830247a4 IZ |
2109 | RExC_seen_zerolen++; |
2110 | RExC_seen |= REG_SEEN_EVAL; | |
2111 | while (count && (c = *RExC_parse)) { | |
2112 | if (c == '\\' && RExC_parse[1]) | |
2113 | RExC_parse++; | |
b81d288d | 2114 | else if (c == '{') |
c277df42 | 2115 | count++; |
b81d288d | 2116 | else if (c == '}') |
c277df42 | 2117 | count--; |
830247a4 | 2118 | RExC_parse++; |
c277df42 | 2119 | } |
830247a4 | 2120 | if (*RExC_parse != ')') |
b45f050a | 2121 | { |
b81d288d | 2122 | RExC_parse = s; |
b45f050a JF |
2123 | vFAIL("Sequence (?{...}) not terminated or not {}-balanced"); |
2124 | } | |
c277df42 IZ |
2125 | if (!SIZE_ONLY) { |
2126 | AV *av; | |
b81d288d AB |
2127 | |
2128 | if (RExC_parse - 1 - s) | |
830247a4 | 2129 | sv = newSVpvn(s, RExC_parse - 1 - s); |
c277df42 | 2130 | else |
79cb57f6 | 2131 | sv = newSVpvn("", 0); |
c277df42 | 2132 | |
569233ed SB |
2133 | ENTER; |
2134 | Perl_save_re_context(aTHX); | |
c277df42 | 2135 | rop = sv_compile_2op(sv, &sop, "re", &av); |
569233ed | 2136 | LEAVE; |
c277df42 | 2137 | |
830247a4 IZ |
2138 | n = add_data(pRExC_state, 3, "nop"); |
2139 | RExC_rx->data->data[n] = (void*)rop; | |
2140 | RExC_rx->data->data[n+1] = (void*)sop; | |
2141 | RExC_rx->data->data[n+2] = (void*)av; | |
c277df42 | 2142 | SvREFCNT_dec(sv); |
a0ed51b3 | 2143 | } |
e24b16f9 | 2144 | else { /* First pass */ |
830247a4 | 2145 | if (PL_reginterp_cnt < ++RExC_seen_evals |
e24b16f9 | 2146 | && PL_curcop != &PL_compiling) |
2cd61cdb IZ |
2147 | /* No compiled RE interpolated, has runtime |
2148 | components ===> unsafe. */ | |
2149 | FAIL("Eval-group not allowed at runtime, use re 'eval'"); | |
5b61d3f7 | 2150 | if (PL_tainting && PL_tainted) |
cc6b7395 | 2151 | FAIL("Eval-group in insecure regular expression"); |
c277df42 IZ |
2152 | } |
2153 | ||
830247a4 | 2154 | nextchar(pRExC_state); |
0f5d15d6 | 2155 | if (logical) { |
830247a4 | 2156 | ret = reg_node(pRExC_state, LOGICAL); |
0f5d15d6 IZ |
2157 | if (!SIZE_ONLY) |
2158 | ret->flags = 2; | |
830247a4 | 2159 | regtail(pRExC_state, ret, reganode(pRExC_state, EVAL, n)); |
fac92740 | 2160 | /* deal with the length of this later - MJD */ |
0f5d15d6 IZ |
2161 | return ret; |
2162 | } | |
830247a4 | 2163 | return reganode(pRExC_state, EVAL, n); |
c277df42 | 2164 | } |
fac92740 | 2165 | case '(': /* (?(?{...})...) and (?(?=...)...) */ |
c277df42 | 2166 | { |
fac92740 | 2167 | if (RExC_parse[0] == '?') { /* (?(?...)) */ |
b81d288d AB |
2168 | if (RExC_parse[1] == '=' || RExC_parse[1] == '!' |
2169 | || RExC_parse[1] == '<' | |
830247a4 | 2170 | || RExC_parse[1] == '{') { /* Lookahead or eval. */ |
c277df42 IZ |
2171 | I32 flag; |
2172 | ||
830247a4 | 2173 | ret = reg_node(pRExC_state, LOGICAL); |
0f5d15d6 IZ |
2174 | if (!SIZE_ONLY) |
2175 | ret->flags = 1; | |
830247a4 | 2176 | regtail(pRExC_state, ret, reg(pRExC_state, 1, &flag)); |
c277df42 | 2177 | goto insert_if; |
b81d288d | 2178 | } |
a0ed51b3 | 2179 | } |
830247a4 | 2180 | else if (RExC_parse[0] >= '1' && RExC_parse[0] <= '9' ) { |
fac92740 | 2181 | /* (?(1)...) */ |
830247a4 | 2182 | parno = atoi(RExC_parse++); |
c277df42 | 2183 | |
830247a4 IZ |
2184 | while (isDIGIT(*RExC_parse)) |
2185 | RExC_parse++; | |
fac92740 MJD |
2186 | ret = reganode(pRExC_state, GROUPP, parno); |
2187 | ||
830247a4 | 2188 | if ((c = *nextchar(pRExC_state)) != ')') |
b45f050a | 2189 | vFAIL("Switch condition not recognized"); |
c277df42 | 2190 | insert_if: |
830247a4 IZ |
2191 | regtail(pRExC_state, ret, reganode(pRExC_state, IFTHEN, 0)); |
2192 | br = regbranch(pRExC_state, &flags, 1); | |
c277df42 | 2193 | if (br == NULL) |
830247a4 | 2194 | br = reganode(pRExC_state, LONGJMP, 0); |
c277df42 | 2195 | else |
830247a4 IZ |
2196 | regtail(pRExC_state, br, reganode(pRExC_state, LONGJMP, 0)); |
2197 | c = *nextchar(pRExC_state); | |
d1b80229 IZ |
2198 | if (flags&HASWIDTH) |
2199 | *flagp |= HASWIDTH; | |
c277df42 | 2200 | if (c == '|') { |
830247a4 IZ |
2201 | lastbr = reganode(pRExC_state, IFTHEN, 0); /* Fake one for optimizer. */ |
2202 | regbranch(pRExC_state, &flags, 1); | |
2203 | regtail(pRExC_state, ret, lastbr); | |
d1b80229 IZ |
2204 | if (flags&HASWIDTH) |
2205 | *flagp |= HASWIDTH; | |
830247a4 | 2206 | c = *nextchar(pRExC_state); |
a0ed51b3 LW |
2207 | } |
2208 | else | |
c277df42 IZ |
2209 | lastbr = NULL; |
2210 | if (c != ')') | |
8615cb43 | 2211 | vFAIL("Switch (?(condition)... contains too many branches"); |
830247a4 IZ |
2212 | ender = reg_node(pRExC_state, TAIL); |
2213 | regtail(pRExC_state, br, ender); | |
c277df42 | 2214 | if (lastbr) { |
830247a4 IZ |
2215 | regtail(pRExC_state, lastbr, ender); |
2216 | regtail(pRExC_state, NEXTOPER(NEXTOPER(lastbr)), ender); | |
a0ed51b3 LW |
2217 | } |
2218 | else | |
830247a4 | 2219 | regtail(pRExC_state, ret, ender); |
c277df42 | 2220 | return ret; |
a0ed51b3 LW |
2221 | } |
2222 | else { | |
830247a4 | 2223 | vFAIL2("Unknown switch condition (?(%.2s", RExC_parse); |
c277df42 IZ |
2224 | } |
2225 | } | |
1b1626e4 | 2226 | case 0: |
830247a4 | 2227 | RExC_parse--; /* for vFAIL to print correctly */ |
8615cb43 | 2228 | vFAIL("Sequence (? incomplete"); |
1b1626e4 | 2229 | break; |
a0d0e21e | 2230 | default: |
830247a4 | 2231 | --RExC_parse; |
fac92740 | 2232 | parse_flags: /* (?i) */ |
830247a4 | 2233 | while (*RExC_parse && strchr("iogcmsx", *RExC_parse)) { |
9d1d55b5 JP |
2234 | /* (?g), (?gc) and (?o) are useless here |
2235 | and must be globally applied -- japhy */ | |
2236 | ||
2237 | if (*RExC_parse == 'o' || *RExC_parse == 'g') { | |
2238 | if (SIZE_ONLY && ckWARN(WARN_REGEXP)) { | |
2239 | I32 wflagbit = *RExC_parse == 'o' ? wasted_o : wasted_g; | |
2240 | if (! (wastedflags & wflagbit) ) { | |
2241 | wastedflags |= wflagbit; | |
2242 | vWARN5( | |
2243 | RExC_parse + 1, | |
2244 | "Useless (%s%c) - %suse /%c modifier", | |
2245 | flagsp == &negflags ? "?-" : "?", | |
2246 | *RExC_parse, | |
2247 | flagsp == &negflags ? "don't " : "", | |
2248 | *RExC_parse | |
2249 | ); | |
2250 | } | |
2251 | } | |
2252 | } | |
2253 | else if (*RExC_parse == 'c') { | |
2254 | if (SIZE_ONLY && ckWARN(WARN_REGEXP)) { | |
2255 | if (! (wastedflags & wasted_c) ) { | |
2256 | wastedflags |= wasted_gc; | |
2257 | vWARN3( | |
2258 | RExC_parse + 1, | |
2259 | "Useless (%sc) - %suse /gc modifier", | |
2260 | flagsp == &negflags ? "?-" : "?", | |
2261 | flagsp == &negflags ? "don't " : "" | |
2262 | ); | |
2263 | } | |
2264 | } | |
2265 | } | |
2266 | else { pmflag(flagsp, *RExC_parse); } | |
2267 | ||
830247a4 | 2268 | ++RExC_parse; |
ca9dfc88 | 2269 | } |
830247a4 | 2270 | if (*RExC_parse == '-') { |
ca9dfc88 | 2271 | flagsp = &negflags; |
9d1d55b5 | 2272 | wastedflags = 0; /* reset so (?g-c) warns twice */ |
830247a4 | 2273 | ++RExC_parse; |
ca9dfc88 | 2274 | goto parse_flags; |
48c036b1 | 2275 | } |
830247a4 IZ |
2276 | RExC_flags16 |= posflags; |
2277 | RExC_flags16 &= ~negflags; | |
2278 | if (*RExC_parse == ':') { | |
2279 | RExC_parse++; | |
ca9dfc88 IZ |
2280 | paren = ':'; |
2281 | break; | |
2282 | } | |
c277df42 | 2283 | unknown: |
830247a4 IZ |
2284 | if (*RExC_parse != ')') { |
2285 | RExC_parse++; | |
2286 | vFAIL3("Sequence (%.*s...) not recognized", RExC_parse-seqstart, seqstart); | |
b45f050a | 2287 | } |
830247a4 | 2288 | nextchar(pRExC_state); |
a0d0e21e LW |
2289 | *flagp = TRYAGAIN; |
2290 | return NULL; | |
2291 | } | |
2292 | } | |
fac92740 | 2293 | else { /* (...) */ |
830247a4 IZ |
2294 | parno = RExC_npar; |
2295 | RExC_npar++; | |
2296 | ret = reganode(pRExC_state, OPEN, parno); | |
fac92740 MJD |
2297 | Set_Node_Length(ret, 1); /* MJD */ |
2298 | Set_Node_Offset(ret, RExC_parse); /* MJD */ | |
c277df42 | 2299 | open = 1; |
a0d0e21e | 2300 | } |
a0ed51b3 | 2301 | } |
fac92740 | 2302 | else /* ! paren */ |
a0d0e21e LW |
2303 | ret = NULL; |
2304 | ||
2305 | /* Pick up the branches, linking them together. */ | |
fac92740 | 2306 | parse_start = RExC_parse; /* MJD */ |
830247a4 | 2307 | br = regbranch(pRExC_state, &flags, 1); |
fac92740 MJD |
2308 | /* branch_len = (paren != 0); */ |
2309 | ||
a0d0e21e LW |
2310 | if (br == NULL) |
2311 | return(NULL); | |
830247a4 IZ |
2312 | if (*RExC_parse == '|') { |
2313 | if (!SIZE_ONLY && RExC_extralen) { | |
2314 | reginsert(pRExC_state, BRANCHJ, br); | |
a0ed51b3 | 2315 | } |
fac92740 | 2316 | else { /* MJD */ |
830247a4 | 2317 | reginsert(pRExC_state, BRANCH, br); |
fac92740 MJD |
2318 | Set_Node_Length(br, paren != 0); |
2319 | Set_Node_Offset_To_R(br-RExC_emit_start, parse_start-RExC_start); | |
2320 | } | |
c277df42 IZ |
2321 | have_branch = 1; |
2322 | if (SIZE_ONLY) | |
830247a4 | 2323 | RExC_extralen += 1; /* For BRANCHJ-BRANCH. */ |
a0ed51b3 LW |
2324 | } |
2325 | else if (paren == ':') { | |
c277df42 IZ |
2326 | *flagp |= flags&SIMPLE; |
2327 | } | |
2328 | if (open) { /* Starts with OPEN. */ | |
830247a4 | 2329 | regtail(pRExC_state, ret, br); /* OPEN -> first. */ |
a0ed51b3 LW |
2330 | } |
2331 | else if (paren != '?') /* Not Conditional */ | |
a0d0e21e | 2332 | ret = br; |
821b33a5 IZ |
2333 | if (flags&HASWIDTH) |
2334 | *flagp |= HASWIDTH; | |
a0d0e21e | 2335 | *flagp |= flags&SPSTART; |
c277df42 | 2336 | lastbr = br; |
830247a4 IZ |
2337 | while (*RExC_parse == '|') { |
2338 | if (!SIZE_ONLY && RExC_extralen) { | |
2339 | ender = reganode(pRExC_state, LONGJMP,0); | |
2340 | regtail(pRExC_state, NEXTOPER(NEXTOPER(lastbr)), ender); /* Append to the previous. */ | |
c277df42 IZ |
2341 | } |
2342 | if (SIZE_ONLY) | |
830247a4 IZ |
2343 | RExC_extralen += 2; /* Account for LONGJMP. */ |
2344 | nextchar(pRExC_state); | |
2345 | br = regbranch(pRExC_state, &flags, 0); | |
fac92740 | 2346 | |
a687059c | 2347 | if (br == NULL) |
a0d0e21e | 2348 | return(NULL); |
830247a4 | 2349 | regtail(pRExC_state, lastbr, br); /* BRANCH -> BRANCH. */ |
c277df42 | 2350 | lastbr = br; |
821b33a5 IZ |
2351 | if (flags&HASWIDTH) |
2352 | *flagp |= HASWIDTH; | |
a687059c | 2353 | *flagp |= flags&SPSTART; |
a0d0e21e LW |
2354 | } |
2355 | ||
c277df42 IZ |
2356 | if (have_branch || paren != ':') { |
2357 | /* Make a closing node, and hook it on the end. */ | |
2358 | switch (paren) { | |
2359 | case ':': | |
830247a4 | 2360 | ender = reg_node(pRExC_state, TAIL); |
c277df42 IZ |
2361 | break; |
2362 | case 1: | |
830247a4 | 2363 | ender = reganode(pRExC_state, CLOSE, parno); |
fac92740 MJD |
2364 | Set_Node_Offset(ender,RExC_parse+1); /* MJD */ |
2365 | Set_Node_Length(ender,1); /* MJD */ | |
c277df42 IZ |
2366 | break; |
2367 | case '<': | |
c277df42 IZ |
2368 | case ',': |
2369 | case '=': | |
2370 | case '!': | |
c277df42 | 2371 | *flagp &= ~HASWIDTH; |
821b33a5 IZ |
2372 | /* FALL THROUGH */ |
2373 | case '>': | |
830247a4 | 2374 | ender = reg_node(pRExC_state, SUCCEED); |
c277df42 IZ |
2375 | break; |
2376 | case 0: | |
830247a4 | 2377 | ender = reg_node(pRExC_state, END); |
c277df42 IZ |
2378 | break; |
2379 | } | |
830247a4 | 2380 | regtail(pRExC_state, lastbr, ender); |
a0d0e21e | 2381 | |
c277df42 IZ |
2382 | if (have_branch) { |
2383 | /* Hook the tails of the branches to the closing node. */ | |
2384 | for (br = ret; br != NULL; br = regnext(br)) { | |
830247a4 | 2385 | regoptail(pRExC_state, br, ender); |
c277df42 IZ |
2386 | } |
2387 | } | |
a0d0e21e | 2388 | } |
c277df42 IZ |
2389 | |
2390 | { | |
2391 | char *p; | |
2392 | static char parens[] = "=!<,>"; | |
2393 | ||
2394 | if (paren && (p = strchr(parens, paren))) { | |
2395 | int node = ((p - parens) % 2) ? UNLESSM : IFMATCH; | |
2396 | int flag = (p - parens) > 1; | |
2397 | ||
2398 | if (paren == '>') | |
2399 | node = SUSPEND, flag = 0; | |
830247a4 | 2400 | reginsert(pRExC_state, node,ret); |
c277df42 | 2401 | ret->flags = flag; |
830247a4 | 2402 | regtail(pRExC_state, ret, reg_node(pRExC_state, TAIL)); |
c277df42 | 2403 | } |
a0d0e21e LW |
2404 | } |
2405 | ||
2406 | /* Check for proper termination. */ | |
ce3e6498 | 2407 | if (paren) { |
830247a4 IZ |
2408 | RExC_flags16 = oregflags; |
2409 | if (RExC_parse >= RExC_end || *nextchar(pRExC_state) != ')') { | |
2410 | RExC_parse = oregcomp_parse; | |
380a0633 | 2411 | vFAIL("Unmatched ("); |
ce3e6498 | 2412 | } |
a0ed51b3 | 2413 | } |
830247a4 IZ |
2414 | else if (!paren && RExC_parse < RExC_end) { |
2415 | if (*RExC_parse == ')') { | |
2416 | RExC_parse++; | |
380a0633 | 2417 | vFAIL("Unmatched )"); |
a0ed51b3 LW |
2418 | } |
2419 | else | |
b45f050a | 2420 | FAIL("Junk on end of regexp"); /* "Can't happen". */ |
a0d0e21e LW |
2421 | /* NOTREACHED */ |
2422 | } | |
a687059c | 2423 | |
a0d0e21e | 2424 | return(ret); |
a687059c LW |
2425 | } |
2426 | ||
2427 | /* | |
2428 | - regbranch - one alternative of an | operator | |
2429 | * | |
2430 | * Implements the concatenation operator. | |
2431 | */ | |
76e3520e | 2432 | STATIC regnode * |
830247a4 | 2433 | S_regbranch(pTHX_ RExC_state_t *pRExC_state, I32 *flagp, I32 first) |
a687059c | 2434 | { |
c277df42 IZ |
2435 | register regnode *ret; |
2436 | register regnode *chain = NULL; | |
2437 | register regnode *latest; | |
2438 | I32 flags = 0, c = 0; | |
a0d0e21e | 2439 | |
b81d288d | 2440 | if (first) |
c277df42 IZ |
2441 | ret = NULL; |
2442 | else { | |
b81d288d | 2443 | if (!SIZE_ONLY && RExC_extralen) |
830247a4 | 2444 | ret = reganode(pRExC_state, BRANCHJ,0); |
fac92740 | 2445 | else { |
830247a4 | 2446 | ret = reg_node(pRExC_state, BRANCH); |
fac92740 MJD |
2447 | Set_Node_Length(ret, 1); |
2448 | } | |
c277df42 IZ |
2449 | } |
2450 | ||
b81d288d | 2451 | if (!first && SIZE_ONLY) |
830247a4 | 2452 | RExC_extralen += 1; /* BRANCHJ */ |
b81d288d | 2453 | |
c277df42 | 2454 | *flagp = WORST; /* Tentatively. */ |
a0d0e21e | 2455 | |
830247a4 IZ |
2456 | RExC_parse--; |
2457 | nextchar(pRExC_state); | |
2458 | while (RExC_parse < RExC_end && *RExC_parse != '|' && *RExC_parse != ')') { | |
a0d0e21e | 2459 | flags &= ~TRYAGAIN; |
830247a4 | 2460 | latest = regpiece(pRExC_state, &flags); |
a0d0e21e LW |
2461 | if (latest == NULL) { |
2462 | if (flags & TRYAGAIN) | |
2463 | continue; | |
2464 | return(NULL); | |
a0ed51b3 LW |
2465 | } |
2466 | else if (ret == NULL) | |
c277df42 | 2467 | ret = latest; |
a0d0e21e | 2468 | *flagp |= flags&HASWIDTH; |
c277df42 | 2469 | if (chain == NULL) /* First piece. */ |
a0d0e21e LW |
2470 | *flagp |= flags&SPSTART; |
2471 | else { | |
830247a4 IZ |
2472 | RExC_naughty++; |
2473 | regtail(pRExC_state, chain, latest); | |
a687059c | 2474 | } |
a0d0e21e | 2475 | chain = latest; |
c277df42 IZ |
2476 | c++; |
2477 | } | |
2478 | if (chain == NULL) { /* Loop ran zero times. */ | |
830247a4 | 2479 | chain = reg_node(pRExC_state, NOTHING); |
c277df42 IZ |
2480 | if (ret == NULL) |
2481 | ret = chain; | |
2482 | } | |
2483 | if (c == 1) { | |
2484 | *flagp |= flags&SIMPLE; | |
a0d0e21e | 2485 | } |
a687059c | 2486 | |
a0d0e21e | 2487 | return(ret); |
a687059c LW |
2488 | } |
2489 | ||
2490 | /* | |
2491 | - regpiece - something followed by possible [*+?] | |
2492 | * | |
2493 | * Note that the branching code sequences used for ? and the general cases | |
2494 | * of * and + are somewhat optimized: they use the same NOTHING node as | |
2495 | * both the endmarker for their branch list and the body of the last branch. | |
2496 | * It might seem that this node could be dispensed with entirely, but the | |
2497 | * endmarker role is not redundant. | |
2498 | */ | |
76e3520e | 2499 | STATIC regnode * |
830247a4 | 2500 | S_regpiece(pTHX_ RExC_state_t *pRExC_state, I32 *flagp) |
a687059c | 2501 | { |
c277df42 | 2502 | register regnode *ret; |
a0d0e21e LW |
2503 | register char op; |
2504 | register char *next; | |
2505 | I32 flags; | |
830247a4 | 2506 | char *origparse = RExC_parse; |
a0d0e21e LW |
2507 | char *maxpos; |
2508 | I32 min; | |
c277df42 | 2509 | I32 max = REG_INFTY; |
fac92740 | 2510 | char *parse_start; |
a0d0e21e | 2511 | |
830247a4 | 2512 | ret = regatom(pRExC_state, &flags); |
a0d0e21e LW |
2513 | if (ret == NULL) { |
2514 | if (flags & TRYAGAIN) | |
2515 | *flagp |= TRYAGAIN; | |
2516 | return(NULL); | |
2517 | } | |
2518 | ||
830247a4 | 2519 | op = *RExC_parse; |
a0d0e21e | 2520 | |
830247a4 | 2521 | if (op == '{' && regcurly(RExC_parse)) { |
fac92740 | 2522 | parse_start = RExC_parse; /* MJD */ |
830247a4 | 2523 | next = RExC_parse + 1; |
a0d0e21e LW |
2524 | maxpos = Nullch; |
2525 | while (isDIGIT(*next) || *next == ',') { | |
2526 | if (*next == ',') { | |
2527 | if (maxpos) | |
2528 | break; | |
2529 | else | |
2530 | maxpos = next; | |
a687059c | 2531 | } |
a0d0e21e LW |
2532 | next++; |
2533 | } | |
2534 | if (*next == '}') { /* got one */ | |
2535 | if (!maxpos) | |
2536 | maxpos = next; | |
830247a4 IZ |
2537 | RExC_parse++; |
2538 | min = atoi(RExC_parse); | |
a0d0e21e LW |
2539 | if (*maxpos == ',') |
2540 | maxpos++; | |
2541 | else | |
830247a4 | 2542 | maxpos = RExC_parse; |
a0d0e21e LW |
2543 | max = atoi(maxpos); |
2544 | if (!max && *maxpos != '0') | |
c277df42 IZ |
2545 | max = REG_INFTY; /* meaning "infinity" */ |
2546 | else if (max >= REG_INFTY) | |
8615cb43 | 2547 | vFAIL2("Quantifier in {,} bigger than %d", REG_INFTY - 1); |
830247a4 IZ |
2548 | RExC_parse = next; |
2549 | nextchar(pRExC_state); | |
a0d0e21e LW |
2550 | |
2551 | do_curly: | |
2552 | if ((flags&SIMPLE)) { | |
830247a4 IZ |
2553 | RExC_naughty += 2 + RExC_naughty / 2; |
2554 | reginsert(pRExC_state, CURLY, ret); | |
fac92740 MJD |
2555 | Set_Node_Offset(ret, parse_start+1); /* MJD */ |
2556 | Set_Node_Cur_Length(ret); | |
a0d0e21e LW |
2557 | } |
2558 | else { | |
830247a4 | 2559 | regnode *w = reg_node(pRExC_state, WHILEM); |
2c2d71f5 JH |
2560 | |
2561 | w->flags = 0; | |
830247a4 IZ |
2562 | regtail(pRExC_state, ret, w); |
2563 | if (!SIZE_ONLY && RExC_extralen) { | |
2564 | reginsert(pRExC_state, LONGJMP,ret); | |
2565 | reginsert(pRExC_state, NOTHING,ret); | |
c277df42 IZ |
2566 | NEXT_OFF(ret) = 3; /* Go over LONGJMP. */ |
2567 | } | |
830247a4 | 2568 | reginsert(pRExC_state, CURLYX,ret); |
fac92740 MJD |
2569 | /* MJD hk */ |
2570 | Set_Node_Offset(ret, parse_start+1); | |
2571 | Set_Node_Length(ret, | |
2572 | op == '{' ? (RExC_parse - parse_start) : 1); | |
2573 | ||
830247a4 | 2574 | if (!SIZE_ONLY && RExC_extralen) |
c277df42 | 2575 | NEXT_OFF(ret) = 3; /* Go over NOTHING to LONGJMP. */ |
830247a4 | 2576 | regtail(pRExC_state, ret, reg_node(pRExC_state, NOTHING)); |
c277df42 | 2577 | if (SIZE_ONLY) |
830247a4 IZ |
2578 | RExC_whilem_seen++, RExC_extralen += 3; |
2579 | RExC_naughty += 4 + RExC_naughty; /* compound interest */ | |
a0d0e21e | 2580 | } |
c277df42 | 2581 | ret->flags = 0; |
a0d0e21e LW |
2582 | |
2583 | if (min > 0) | |
821b33a5 IZ |
2584 | *flagp = WORST; |
2585 | if (max > 0) | |
2586 | *flagp |= HASWIDTH; | |
a0d0e21e | 2587 | if (max && max < min) |
8615cb43 | 2588 | vFAIL("Can't do {n,m} with n > m"); |
c277df42 IZ |
2589 | if (!SIZE_ONLY) { |
2590 | ARG1_SET(ret, min); | |
2591 | ARG2_SET(ret, max); | |
a687059c | 2592 | } |
a687059c | 2593 | |
a0d0e21e | 2594 | goto nest_check; |
a687059c | 2595 | } |
a0d0e21e | 2596 | } |
a687059c | 2597 | |
a0d0e21e LW |
2598 | if (!ISMULT1(op)) { |
2599 | *flagp = flags; | |
a687059c | 2600 | return(ret); |
a0d0e21e | 2601 | } |
bb20fd44 | 2602 | |
c277df42 | 2603 | #if 0 /* Now runtime fix should be reliable. */ |
b45f050a JF |
2604 | |
2605 | /* if this is reinstated, don't forget to put this back into perldiag: | |
2606 | ||
2607 | =item Regexp *+ operand could be empty at {#} in regex m/%s/ | |
2608 | ||
2609 | (F) The part of the regexp subject to either the * or + quantifier | |
2610 | could match an empty string. The {#} shows in the regular | |
2611 | expression about where the problem was discovered. | |
2612 | ||
2613 | */ | |
2614 | ||
bb20fd44 | 2615 | if (!(flags&HASWIDTH) && op != '?') |
b45f050a | 2616 | vFAIL("Regexp *+ operand could be empty"); |
b81d288d | 2617 | #endif |
bb20fd44 | 2618 | |
fac92740 | 2619 | parse_start = RExC_parse; |
830247a4 | 2620 | nextchar(pRExC_state); |
a0d0e21e | 2621 | |
821b33a5 | 2622 | *flagp = (op != '+') ? (WORST|SPSTART|HASWIDTH) : (WORST|HASWIDTH); |
a0d0e21e LW |
2623 | |
2624 | if (op == '*' && (flags&SIMPLE)) { | |
830247a4 | 2625 | reginsert(pRExC_state, STAR, ret); |
c277df42 | 2626 | ret->flags = 0; |
830247a4 | 2627 | RExC_naughty += 4; |
a0d0e21e LW |
2628 | } |
2629 | else if (op == '*') { | |
2630 | min = 0; | |
2631 | goto do_curly; | |
a0ed51b3 LW |
2632 | } |
2633 | else if (op == '+' && (flags&SIMPLE)) { | |
830247a4 | 2634 | reginsert(pRExC_state, PLUS, ret); |
c277df42 | 2635 | ret->flags = 0; |
830247a4 | 2636 | RExC_naughty += 3; |
a0d0e21e LW |
2637 | } |
2638 | else if (op == '+') { | |
2639 | min = 1; | |
2640 | goto do_curly; | |
a0ed51b3 LW |
2641 | } |
2642 | else if (op == '?') { | |
a0d0e21e LW |
2643 | min = 0; max = 1; |
2644 | goto do_curly; | |
2645 | } | |
2646 | nest_check: | |
e476b1b5 | 2647 | if (ckWARN(WARN_REGEXP) && !SIZE_ONLY && !(flags&HASWIDTH) && max > REG_INFTY/3) { |
830247a4 | 2648 | vWARN3(RExC_parse, |
b45f050a | 2649 | "%.*s matches null string many times", |
830247a4 | 2650 | RExC_parse - origparse, |
b45f050a | 2651 | origparse); |
a0d0e21e LW |
2652 | } |
2653 | ||
830247a4 IZ |
2654 | if (*RExC_parse == '?') { |
2655 | nextchar(pRExC_state); | |
2656 | reginsert(pRExC_state, MINMOD, ret); | |
2657 | regtail(pRExC_state, ret, ret + NODE_STEP_REGNODE); | |
a0d0e21e | 2658 | } |
830247a4 IZ |
2659 | if (ISMULT2(RExC_parse)) { |
2660 | RExC_parse++; | |
b45f050a JF |
2661 | vFAIL("Nested quantifiers"); |
2662 | } | |
a0d0e21e LW |
2663 | |
2664 | return(ret); | |
a687059c LW |
2665 | } |
2666 | ||
2667 | /* | |
2668 | - regatom - the lowest level | |
2669 | * | |
2670 | * Optimization: gobbles an entire sequence of ordinary characters so that | |
2671 | * it can turn them into a single node, which is smaller to store and | |
2672 | * faster to run. Backslashed characters are exceptions, each becoming a | |
2673 | * separate node; the code is simpler that way and it's not worth fixing. | |
2674 | * | |
b45f050a | 2675 | * [Yes, it is worth fixing, some scripts can run twice the speed.] */ |
76e3520e | 2676 | STATIC regnode * |
830247a4 | 2677 | S_regatom(pTHX_ RExC_state_t *pRExC_state, I32 *flagp) |
a687059c | 2678 | { |
c277df42 | 2679 | register regnode *ret = 0; |
a0d0e21e | 2680 | I32 flags; |
f06dbbb7 | 2681 | char *parse_start = 0; |
a0d0e21e LW |
2682 | |
2683 | *flagp = WORST; /* Tentatively. */ | |
2684 | ||
2685 | tryagain: | |
830247a4 | 2686 | switch (*RExC_parse) { |
a0d0e21e | 2687 | case '^': |
830247a4 IZ |
2688 | RExC_seen_zerolen++; |
2689 | nextchar(pRExC_state); | |
2690 | if (RExC_flags16 & PMf_MULTILINE) | |
2691 | ret = reg_node(pRExC_state, MBOL); | |
2692 | else if (RExC_flags16 & PMf_SINGLELINE) | |
2693 | ret = reg_node(pRExC_state, SBOL); | |
a0d0e21e | 2694 | else |
830247a4 | 2695 | ret = reg_node(pRExC_state, BOL); |
fac92740 | 2696 | Set_Node_Length(ret, 1); /* MJD */ |
a0d0e21e LW |
2697 | break; |
2698 | case '$': | |
830247a4 | 2699 | nextchar(pRExC_state); |
b81d288d | 2700 | if (*RExC_parse) |
830247a4 IZ |
2701 | RExC_seen_zerolen++; |
2702 | if (RExC_flags16 & PMf_MULTILINE) | |
2703 | ret = reg_node(pRExC_state, MEOL); | |
2704 | else if (RExC_flags16 & PMf_SINGLELINE) | |
2705 | ret = reg_node(pRExC_state, SEOL); | |
a0d0e21e | 2706 | else |
830247a4 | 2707 | ret = reg_node(pRExC_state, EOL); |
fac92740 | 2708 | Set_Node_Length(ret, 1); /* MJD */ |
a0d0e21e LW |
2709 | break; |
2710 | case '.': | |
830247a4 | 2711 | nextchar(pRExC_state); |
ffc61ed2 JH |
2712 | if (RExC_flags16 & PMf_SINGLELINE) |
2713 | ret = reg_node(pRExC_state, SANY); | |
2714 | else | |
2715 | ret = reg_node(pRExC_state, REG_ANY); | |
2716 | *flagp |= HASWIDTH|SIMPLE; | |
830247a4 | 2717 | RExC_naughty++; |
fac92740 | 2718 | Set_Node_Length(ret, 1); /* MJD */ |
a0d0e21e LW |
2719 | break; |
2720 | case '[': | |
b45f050a | 2721 | { |
830247a4 | 2722 | char *oregcomp_parse = ++RExC_parse; |
ffc61ed2 | 2723 | ret = regclass(pRExC_state); |
830247a4 IZ |
2724 | if (*RExC_parse != ']') { |
2725 | RExC_parse = oregcomp_parse; | |
b45f050a JF |
2726 | vFAIL("Unmatched ["); |
2727 | } | |
830247a4 | 2728 | nextchar(pRExC_state); |
a0d0e21e | 2729 | *flagp |= HASWIDTH|SIMPLE; |
fac92740 | 2730 | Set_Node_Length(ret, RExC_parse - oregcomp_parse + 1); /* MJD */ |
a0d0e21e | 2731 | break; |
b45f050a | 2732 | } |
a0d0e21e | 2733 | case '(': |
830247a4 IZ |
2734 | nextchar(pRExC_state); |
2735 | ret = reg(pRExC_state, 1, &flags); | |
a0d0e21e | 2736 | if (ret == NULL) { |
bf93d4cc | 2737 | if (flags & TRYAGAIN) { |
830247a4 | 2738 | if (RExC_parse == RExC_end) { |
bf93d4cc GS |
2739 | /* Make parent create an empty node if needed. */ |
2740 | *flagp |= TRYAGAIN; | |
2741 | return(NULL); | |
2742 | } | |
a0d0e21e | 2743 | goto tryagain; |
bf93d4cc | 2744 | } |
a0d0e21e LW |
2745 | return(NULL); |
2746 | } | |
c277df42 | 2747 | *flagp |= flags&(HASWIDTH|SPSTART|SIMPLE); |
a0d0e21e LW |
2748 | break; |
2749 | case '|': | |
2750 | case ')': | |
2751 | if (flags & TRYAGAIN) { | |
2752 | *flagp |= TRYAGAIN; | |
2753 | return NULL; | |
2754 | } | |
b45f050a | 2755 | vFAIL("Internal urp"); |
a0d0e21e LW |
2756 | /* Supposed to be caught earlier. */ |
2757 | break; | |
85afd4ae | 2758 | case '{': |
830247a4 IZ |
2759 | if (!regcurly(RExC_parse)) { |
2760 | RExC_parse++; | |
85afd4ae CS |
2761 | goto defchar; |
2762 | } | |
2763 | /* FALL THROUGH */ | |
a0d0e21e LW |
2764 | case '?': |
2765 | case '+': | |
2766 | case '*': | |
830247a4 | 2767 | RExC_parse++; |
b45f050a | 2768 | vFAIL("Quantifier follows nothing"); |
a0d0e21e LW |
2769 | break; |
2770 | case '\\': | |
830247a4 | 2771 | switch (*++RExC_parse) { |
a0d0e21e | 2772 | case 'A': |
830247a4 IZ |
2773 | RExC_seen_zerolen++; |
2774 | ret = reg_node(pRExC_state, SBOL); | |
a0d0e21e | 2775 | *flagp |= SIMPLE; |
830247a4 | 2776 | nextchar(pRExC_state); |
fac92740 | 2777 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2778 | break; |
2779 | case 'G': | |
830247a4 IZ |
2780 | ret = reg_node(pRExC_state, GPOS); |
2781 | RExC_seen |= REG_SEEN_GPOS; | |
a0d0e21e | 2782 | *flagp |= SIMPLE; |
830247a4 | 2783 | nextchar(pRExC_state); |
fac92740 | 2784 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2785 | break; |
2786 | case 'Z': | |
830247a4 | 2787 | ret = reg_node(pRExC_state, SEOL); |
a0d0e21e | 2788 | *flagp |= SIMPLE; |
830247a4 | 2789 | nextchar(pRExC_state); |
a0d0e21e | 2790 | break; |
b85d18e9 | 2791 | case 'z': |
830247a4 | 2792 | ret = reg_node(pRExC_state, EOS); |
b85d18e9 | 2793 | *flagp |= SIMPLE; |
830247a4 IZ |
2794 | RExC_seen_zerolen++; /* Do not optimize RE away */ |
2795 | nextchar(pRExC_state); | |
fac92740 | 2796 | Set_Node_Length(ret, 2); /* MJD */ |
b85d18e9 | 2797 | break; |
4a2d328f | 2798 | case 'C': |
830247a4 | 2799 | ret = reg_node(pRExC_state, SANY); |
3baa4c62 | 2800 | RExC_seen |= REG_SEEN_SANY; |
a0ed51b3 | 2801 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2802 | nextchar(pRExC_state); |
fac92740 | 2803 | Set_Node_Length(ret, 2); /* MJD */ |
a0ed51b3 LW |
2804 | break; |
2805 | case 'X': | |
830247a4 | 2806 | ret = reg_node(pRExC_state, CLUMP); |
a0ed51b3 | 2807 | *flagp |= HASWIDTH; |
830247a4 | 2808 | nextchar(pRExC_state); |
fac92740 | 2809 | Set_Node_Length(ret, 2); /* MJD */ |
a0ed51b3 | 2810 | break; |
a0d0e21e | 2811 | case 'w': |
ffc61ed2 | 2812 | ret = reg_node(pRExC_state, LOC ? ALNUML : ALNUM); |
a0d0e21e | 2813 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2814 | nextchar(pRExC_state); |
fac92740 | 2815 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2816 | break; |
2817 | case 'W': | |
ffc61ed2 | 2818 | ret = reg_node(pRExC_state, LOC ? NALNUML : NALNUM); |
a0d0e21e | 2819 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2820 | nextchar(pRExC_state); |
fac92740 | 2821 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2822 | break; |
2823 | case 'b': | |
830247a4 IZ |
2824 | RExC_seen_zerolen++; |
2825 | RExC_seen |= REG_SEEN_LOOKBEHIND; | |
ffc61ed2 | 2826 | ret = reg_node(pRExC_state, LOC ? BOUNDL : BOUND); |
a0d0e21e | 2827 | *flagp |= SIMPLE; |
830247a4 | 2828 | nextchar(pRExC_state); |
fac92740 | 2829 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2830 | break; |
2831 | case 'B': | |
830247a4 IZ |
2832 | RExC_seen_zerolen++; |
2833 | RExC_seen |= REG_SEEN_LOOKBEHIND; | |
ffc61ed2 | 2834 | ret = reg_node(pRExC_state, LOC ? NBOUNDL : NBOUND); |
a0d0e21e | 2835 | *flagp |= SIMPLE; |
830247a4 | 2836 | nextchar(pRExC_state); |
fac92740 | 2837 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2838 | break; |
2839 | case 's': | |
ffc61ed2 | 2840 | ret = reg_node(pRExC_state, LOC ? SPACEL : SPACE); |
a0d0e21e | 2841 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2842 | nextchar(pRExC_state); |
fac92740 | 2843 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2844 | break; |
2845 | case 'S': | |
ffc61ed2 | 2846 | ret = reg_node(pRExC_state, LOC ? NSPACEL : NSPACE); |
a0d0e21e | 2847 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2848 | nextchar(pRExC_state); |
fac92740 | 2849 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2850 | break; |
2851 | case 'd': | |
ffc61ed2 | 2852 | ret = reg_node(pRExC_state, DIGIT); |
a0d0e21e | 2853 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2854 | nextchar(pRExC_state); |
fac92740 | 2855 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e LW |
2856 | break; |
2857 | case 'D': | |
ffc61ed2 | 2858 | ret = reg_node(pRExC_state, NDIGIT); |
a0d0e21e | 2859 | *flagp |= HASWIDTH|SIMPLE; |
830247a4 | 2860 | nextchar(pRExC_state); |
fac92740 | 2861 | Set_Node_Length(ret, 2); /* MJD */ |
a0d0e21e | 2862 | break; |
a14b48bc LW |
2863 | case 'p': |
2864 | case 'P': | |
3568d838 | 2865 | { |
830247a4 | 2866 | char* oldregxend = RExC_end; |
fac92740 | 2867 | char* parse_start = RExC_parse; |
a14b48bc | 2868 | |
830247a4 | 2869 | if (RExC_parse[1] == '{') { |
3568d838 | 2870 | /* a lovely hack--pretend we saw [\pX] instead */ |
830247a4 IZ |
2871 | RExC_end = strchr(RExC_parse, '}'); |
2872 | if (!RExC_end) { | |
2873 | RExC_parse += 2; | |
2874 | RExC_end = oldregxend; | |
b45f050a JF |
2875 | vFAIL("Missing right brace on \\p{}"); |
2876 | } | |
830247a4 | 2877 | RExC_end++; |
a14b48bc LW |
2878 | } |
2879 | else | |
830247a4 IZ |
2880 | RExC_end = RExC_parse + 2; |
2881 | RExC_parse--; | |
a14b48bc | 2882 | |
ffc61ed2 | 2883 | ret = regclass(pRExC_state); |
a14b48bc | 2884 | |
830247a4 IZ |
2885 | RExC_end = oldregxend; |
2886 | RExC_parse--; | |
fac92740 | 2887 | Set_Node_Cur_Length(ret); /* MJD */ |
830247a4 | 2888 | nextchar(pRExC_state); |
a14b48bc LW |
2889 | *flagp |= HASWIDTH|SIMPLE; |
2890 | } | |
2891 | break; | |
a0d0e21e LW |
2892 | case 'n': |
2893 | case 'r': | |
2894 | case 't': | |
2895 | case 'f': | |
2896 | case 'e': | |
2897 | case 'a': | |
2898 | case 'x': | |
2899 | case 'c': | |
2900 | case '0': | |
2901 | goto defchar; | |
2902 | case '1': case '2': case '3': case '4': | |
2903 | case '5': case '6': case '7': case '8': case '9': | |
2904 | { | |
830247a4 | 2905 | I32 num = atoi(RExC_parse); |
a0d0e21e | 2906 | |
830247a4 | 2907 | if (num > 9 && num >= RExC_npar) |
a0d0e21e LW |
2908 | goto defchar; |
2909 | else { | |
fac92740 | 2910 | char * parse_start = RExC_parse - 1; /* MJD */ |
830247a4 IZ |
2911 | while (isDIGIT(*RExC_parse)) |
2912 | RExC_parse++; | |
b45f050a | 2913 | |
830247a4 | 2914 | if (!SIZE_ONLY && num > RExC_rx->nparens) |
9baa0206 | 2915 | vFAIL("Reference to nonexistent group"); |
830247a4 IZ |
2916 | RExC_sawback = 1; |
2917 | ret = reganode(pRExC_state, FOLD | |
a0ed51b3 | 2918 | ? (LOC ? REFFL : REFF) |
c8756f30 | 2919 | : REF, num); |
a0d0e21e | 2920 | *flagp |= HASWIDTH; |
fac92740 MJD |
2921 | |
2922 | /* override incorrect value set in reganode MJD */ | |
2923 | Set_Node_Offset(ret, parse_start+1); | |
2924 | Set_Node_Cur_Length(ret); /* MJD */ | |
830247a4 IZ |
2925 | RExC_parse--; |
2926 | nextchar(pRExC_state); | |
a0d0e21e LW |
2927 | } |
2928 | } | |
2929 | break; | |
2930 | case '\0': | |
830247a4 | 2931 | if (RExC_parse >= RExC_end) |
b45f050a | 2932 | FAIL("Trailing \\"); |
a0d0e21e LW |
2933 | /* FALL THROUGH */ |
2934 | default: | |
c9f97d15 IZ |
2935 | /* Do not generate `unrecognized' warnings here, we fall |
2936 | back into the quick-grab loop below */ | |
a0d0e21e LW |
2937 | goto defchar; |
2938 | } | |
2939 | break; | |
4633a7c4 LW |
2940 | |
2941 | case '#': | |
830247a4 IZ |
2942 | if (RExC_flags16 & PMf_EXTENDED) { |
2943 | while (RExC_parse < RExC_end && *RExC_parse != '\n') RExC_parse++; | |
2944 | if (RExC_parse < RExC_end) | |
4633a7c4 LW |
2945 | goto tryagain; |
2946 | } | |
2947 | /* FALL THROUGH */ | |
2948 | ||
a0d0e21e | 2949 | default: { |
ba210ebe | 2950 | register STRLEN len; |
a0ed51b3 | 2951 | register UV ender; |
a0d0e21e | 2952 | register char *p; |
c277df42 | 2953 | char *oldp, *s; |
ba210ebe | 2954 | STRLEN numlen; |
f06dbbb7 JH |
2955 | |
2956 | parse_start = RExC_parse - 1; | |
a0d0e21e | 2957 | |
830247a4 | 2958 | RExC_parse++; |
a0d0e21e LW |
2959 | |
2960 | defchar: | |
830247a4 | 2961 | ret = reg_node(pRExC_state, FOLD |
a0ed51b3 | 2962 | ? (LOC ? EXACTFL : EXACTF) |
bbce6d69 | 2963 | : EXACT); |
cd439c50 | 2964 | s = STRING(ret); |
830247a4 IZ |
2965 | for (len = 0, p = RExC_parse - 1; |
2966 | len < 127 && p < RExC_end; | |
a0d0e21e LW |
2967 | len++) |
2968 | { | |
2969 | oldp = p; | |
5b5a24f7 | 2970 | |
830247a4 IZ |
2971 | if (RExC_flags16 & PMf_EXTENDED) |
2972 | p = regwhite(p, RExC_end); | |
a0d0e21e LW |
2973 | switch (*p) { |
2974 | case '^': | |
2975 | case '$': | |
2976 | case '.': | |
2977 | case '[': | |
2978 | case '(': | |
2979 | case ')': | |
2980 | case '|': | |
2981 | goto loopdone; | |
2982 | case '\\': | |
2983 | switch (*++p) { | |
2984 | case 'A': | |
2985 | case 'G': | |
2986 | case 'Z': | |
b85d18e9 | 2987 | case 'z': |
a0d0e21e LW |
2988 | case 'w': |
2989 | case 'W': | |
2990 | case 'b': | |
2991 | case 'B': | |
2992 | case 's': | |
2993 | case 'S': | |
2994 | case 'd': | |
2995 | case 'D': | |
a14b48bc LW |
2996 | case 'p': |
2997 | case 'P': | |
a0d0e21e LW |
2998 | --p; |
2999 | goto loopdone; | |
3000 | case 'n': | |
3001 | ender = '\n'; | |
3002 | p++; | |
a687059c | 3003 | break; |
a0d0e21e LW |
3004 | case 'r': |
3005 | ender = '\r'; | |
3006 | p++; | |
a687059c | 3007 | break; |
a0d0e21e LW |
3008 | case 't': |
3009 | ender = '\t'; | |
3010 | p++; | |
a687059c | 3011 | break; |
a0d0e21e LW |
3012 | case 'f': |
3013 | ender = '\f'; | |
3014 | p++; | |
a687059c | 3015 | break; |
a0d0e21e | 3016 | case 'e': |
c7f1f016 | 3017 | ender = ASCII_TO_NATIVE('\033'); |
a0d0e21e | 3018 | p++; |
a687059c | 3019 | break; |
a0d0e21e | 3020 | case 'a': |
c7f1f016 | 3021 | ender = ASCII_TO_NATIVE('\007'); |
a0d0e21e | 3022 | p++; |
a687059c | 3023 | break; |
a0d0e21e | 3024 | case 'x': |
a0ed51b3 LW |
3025 | if (*++p == '{') { |
3026 | char* e = strchr(p, '}'); | |
b81d288d | 3027 | |
b45f050a | 3028 | if (!e) { |
830247a4 | 3029 | RExC_parse = p + 1; |
b45f050a JF |
3030 | vFAIL("Missing right brace on \\x{}"); |
3031 | } | |
de5f0749 | 3032 | else { |
b21ed0a9 | 3033 | numlen = 1; /* allow underscores */ |
de35ba6f | 3034 | ender = (UV)scan_hex(p + 1, e - p - 1, &numlen); |
aaa80028 JH |
3035 | if (ender > 0xff) |
3036 | RExC_utf8 = 1; | |
b21ed0a9 GS |
3037 | /* numlen is generous */ |
3038 | if (numlen + len >= 127) { | |
a0ed51b3 LW |
3039 | p--; |
3040 | goto loopdone; | |
3041 | } | |
3042 | p = e + 1; | |
3043 | } | |
a0ed51b3 LW |
3044 | } |
3045 | else { | |
b21ed0a9 | 3046 | numlen = 0; /* disallow underscores */ |
dff6d3cd | 3047 | ender = (UV)scan_hex(p, 2, &numlen); |
a0ed51b3 LW |
3048 | p += numlen; |
3049 | } | |
a687059c | 3050 | break; |
a0d0e21e LW |
3051 | case 'c': |
3052 | p++; | |
bbce6d69 | 3053 | ender = UCHARAT(p++); |
3054 | ender = toCTRL(ender); | |
a687059c | 3055 | break; |
a0d0e21e LW |
3056 | case '0': case '1': case '2': case '3':case '4': |
3057 | case '5': case '6': case '7': case '8':case '9': | |
3058 | if (*p == '0' || | |
830247a4 | 3059 | (isDIGIT(p[1]) && atoi(p) >= RExC_npar) ) { |
b21ed0a9 | 3060 | numlen = 0; /* disallow underscores */ |
dff6d3cd | 3061 | ender = (UV)scan_oct(p, 3, &numlen); |
a0d0e21e LW |
3062 | p += numlen; |
3063 | } | |
3064 | else { | |
3065 | --p; | |
3066 | goto loopdone; | |
a687059c LW |
3067 | } |
3068 | break; | |
a0d0e21e | 3069 | case '\0': |
830247a4 | 3070 | if (p >= RExC_end) |
b45f050a | 3071 | FAIL("Trailing \\"); |
a687059c | 3072 | /* FALL THROUGH */ |
a0d0e21e | 3073 | default: |
e476b1b5 | 3074 | if (!SIZE_ONLY && ckWARN(WARN_REGEXP) && isALPHA(*p)) |
b45f050a | 3075 | vWARN2(p +1, "Unrecognized escape \\%c passed through", *p); |
a0ed51b3 | 3076 | goto normal_default; |
a0d0e21e LW |
3077 | } |
3078 | break; | |
a687059c | 3079 | default: |
a0ed51b3 | 3080 | normal_default: |
fd400ab9 | 3081 | if (UTF8_IS_START(*p) && UTF) { |
5e12f4fb | 3082 | ender = utf8n_to_uvchr((U8*)p, RExC_end - p, |
ba210ebe | 3083 | &numlen, 0); |
a0ed51b3 LW |
3084 | p += numlen; |
3085 | } | |
3086 | else | |
3087 | ender = *p++; | |
a0d0e21e | 3088 | break; |
a687059c | 3089 | } |
830247a4 IZ |
3090 | if (RExC_flags16 & PMf_EXTENDED) |
3091 | p = regwhite(p, RExC_end); | |
a0ed51b3 LW |
3092 | if (UTF && FOLD) { |
3093 | if (LOC) | |
5e12f4fb | 3094 | ender = toLOWER_LC_uvchr(ender); |
a0ed51b3 LW |
3095 | else |
3096 | ender = toLOWER_uni(ender); | |
3097 | } | |
a0d0e21e LW |
3098 | if (ISMULT2(p)) { /* Back off on ?+*. */ |
3099 | if (len) | |
3100 | p = oldp; | |
2b9d42f0 | 3101 | else if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(ender)) && UTF) { |
830247a4 | 3102 | reguni(pRExC_state, ender, s, &numlen); |
a0ed51b3 LW |
3103 | s += numlen; |
3104 | len += numlen; | |
3105 | } | |
a0d0e21e LW |
3106 | else { |
3107 | len++; | |
cd439c50 | 3108 | REGC(ender, s++); |
a0d0e21e LW |
3109 | } |
3110 | break; | |
a687059c | 3111 | } |
2b9d42f0 | 3112 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(ender)) && UTF) { |
830247a4 | 3113 | reguni(pRExC_state, ender, s, &numlen); |
a0ed51b3 LW |
3114 | s += numlen; |
3115 | len += numlen - 1; | |
3116 | } | |
3117 | else | |
cd439c50 | 3118 | REGC(ender, s++); |
a0d0e21e LW |
3119 | } |
3120 | loopdone: | |
830247a4 | 3121 | RExC_parse = p - 1; |
fac92740 | 3122 | Set_Node_Cur_Length(ret); /* MJD */ |
830247a4 | 3123 | nextchar(pRExC_state); |
793db0cb JH |
3124 | { |
3125 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
3126 | IV iv = len; | |
3127 | if (iv < 0) | |
3128 | vFAIL("Internal disaster"); | |
3129 | } | |
a0d0e21e LW |
3130 | if (len > 0) |
3131 | *flagp |= HASWIDTH; | |
3132 | if (len == 1) | |
3133 | *flagp |= SIMPLE; | |
c277df42 | 3134 | if (!SIZE_ONLY) |
cd439c50 IZ |
3135 | STR_LEN(ret) = len; |
3136 | if (SIZE_ONLY) | |
830247a4 | 3137 | RExC_size += STR_SZ(len); |
cd439c50 | 3138 | else |
830247a4 | 3139 | RExC_emit += STR_SZ(len); |
a687059c | 3140 | } |
a0d0e21e LW |
3141 | break; |
3142 | } | |
a687059c | 3143 | |
a0d0e21e | 3144 | return(ret); |
a687059c LW |
3145 | } |
3146 | ||
873ef191 | 3147 | STATIC char * |
cea2e8a9 | 3148 | S_regwhite(pTHX_ char *p, char *e) |
5b5a24f7 CS |
3149 | { |
3150 | while (p < e) { | |
3151 | if (isSPACE(*p)) | |
3152 | ++p; | |
3153 | else if (*p == '#') { | |
3154 | do { | |
3155 | p++; | |
3156 | } while (p < e && *p != '\n'); | |
3157 | } | |
3158 | else | |
3159 | break; | |
3160 | } | |
3161 | return p; | |
3162 | } | |
3163 | ||
b8c5462f JH |
3164 | /* Parse POSIX character classes: [[:foo:]], [[=foo=]], [[.foo.]]. |
3165 | Character classes ([:foo:]) can also be negated ([:^foo:]). | |
3166 | Returns a named class id (ANYOF_XXX) if successful, -1 otherwise. | |
3167 | Equivalence classes ([=foo=]) and composites ([.foo.]) are parsed, | |
3168 | but trigger warnings because they are currently unimplemented. */ | |
3169 | STATIC I32 | |
830247a4 | 3170 | S_regpposixcc(pTHX_ RExC_state_t *pRExC_state, I32 value) |
620e46c5 JH |
3171 | { |
3172 | char *posixcc = 0; | |
936ed897 | 3173 | I32 namedclass = OOB_NAMEDCLASS; |
620e46c5 | 3174 | |
830247a4 | 3175 | if (value == '[' && RExC_parse + 1 < RExC_end && |
620e46c5 | 3176 | /* I smell either [: or [= or [. -- POSIX has been here, right? */ |
830247a4 IZ |
3177 | (*RExC_parse == ':' || |
3178 | *RExC_parse == '=' || | |
3179 | *RExC_parse == '.')) { | |
3180 | char c = *RExC_parse; | |
3181 | char* s = RExC_parse++; | |
b81d288d | 3182 | |
830247a4 IZ |
3183 | while (RExC_parse < RExC_end && *RExC_parse != c) |
3184 | RExC_parse++; | |
3185 | if (RExC_parse == RExC_end) | |
620e46c5 | 3186 | /* Grandfather lone [:, [=, [. */ |
830247a4 | 3187 | RExC_parse = s; |
620e46c5 | 3188 | else { |
830247a4 | 3189 | char* t = RExC_parse++; /* skip over the c */ |
b8c5462f | 3190 | |
830247a4 IZ |
3191 | if (*RExC_parse == ']') { |
3192 | RExC_parse++; /* skip over the ending ] */ | |
b8c5462f JH |
3193 | posixcc = s + 1; |
3194 | if (*s == ':') { | |
3195 | I32 complement = *posixcc == '^' ? *posixcc++ : 0; | |
3196 | I32 skip = 5; /* the most common skip */ | |
3197 | ||
3198 | switch (*posixcc) { | |
3199 | case 'a': | |
3200 | if (strnEQ(posixcc, "alnum", 5)) | |
3201 | namedclass = | |
3202 | complement ? ANYOF_NALNUMC : ANYOF_ALNUMC; | |
3203 | else if (strnEQ(posixcc, "alpha", 5)) | |
3204 | namedclass = | |
3205 | complement ? ANYOF_NALPHA : ANYOF_ALPHA; | |
3206 | else if (strnEQ(posixcc, "ascii", 5)) | |
3207 | namedclass = | |
3208 | complement ? ANYOF_NASCII : ANYOF_ASCII; | |
3209 | break; | |
aaa51d5e JF |
3210 | case 'b': |
3211 | if (strnEQ(posixcc, "blank", 5)) | |
3212 | namedclass = | |
3213 | complement ? ANYOF_NBLANK : ANYOF_BLANK; | |
3214 | break; | |
b8c5462f JH |
3215 | case 'c': |
3216 | if (strnEQ(posixcc, "cntrl", 5)) | |
3217 | namedclass = | |
3218 | complement ? ANYOF_NCNTRL : ANYOF_CNTRL; | |
3219 | break; | |
3220 | case 'd': | |
3221 | if (strnEQ(posixcc, "digit", 5)) | |
3222 | namedclass = | |
3223 | complement ? ANYOF_NDIGIT : ANYOF_DIGIT; | |
3224 | break; | |
3225 | case 'g': | |
3226 | if (strnEQ(posixcc, "graph", 5)) | |
3227 | namedclass = | |
3228 | complement ? ANYOF_NGRAPH : ANYOF_GRAPH; | |
3229 | break; | |
3230 | case 'l': | |
3231 | if (strnEQ(posixcc, "lower", 5)) | |
3232 | namedclass = | |
3233 | complement ? ANYOF_NLOWER : ANYOF_LOWER; | |
3234 | break; | |
3235 | case 'p': | |
3236 | if (strnEQ(posixcc, "print", 5)) | |
3237 | namedclass = | |
3238 | complement ? ANYOF_NPRINT : ANYOF_PRINT; | |
3239 | else if (strnEQ(posixcc, "punct", 5)) | |
3240 | namedclass = | |
3241 | complement ? ANYOF_NPUNCT : ANYOF_PUNCT; | |
3242 | break; | |
3243 | case 's': | |
3244 | if (strnEQ(posixcc, "space", 5)) | |
3245 | namedclass = | |
aaa51d5e | 3246 | complement ? ANYOF_NPSXSPC : ANYOF_PSXSPC; |
cc4319de | 3247 | break; |
b8c5462f JH |
3248 | case 'u': |
3249 | if (strnEQ(posixcc, "upper", 5)) | |
3250 | namedclass = | |
3251 | complement ? ANYOF_NUPPER : ANYOF_UPPER; | |
3252 | break; | |
3253 | case 'w': /* this is not POSIX, this is the Perl \w */ | |
3254 | if (strnEQ(posixcc, "word", 4)) { | |
3255 | namedclass = | |
3256 | complement ? ANYOF_NALNUM : ANYOF_ALNUM; | |
3257 | skip = 4; | |
3258 | } | |
3259 | break; | |
3260 | case 'x': | |
3261 | if (strnEQ(posixcc, "xdigit", 6)) { | |
3262 | namedclass = | |
3263 | complement ? ANYOF_NXDIGIT : ANYOF_XDIGIT; | |
3264 | skip = 6; | |
3265 | } | |
3266 | break; | |
3267 | } | |
ac561586 JH |
3268 | if (namedclass == OOB_NAMEDCLASS || |
3269 | posixcc[skip] != ':' || | |
3270 | posixcc[skip+1] != ']') | |
b45f050a JF |
3271 | { |
3272 | Simple_vFAIL3("POSIX class [:%.*s:] unknown", | |
3273 | t - s - 1, s + 1); | |
3274 | } | |
3275 | } else if (!SIZE_ONLY) { | |
b8c5462f | 3276 | /* [[=foo=]] and [[.foo.]] are still future. */ |
b45f050a | 3277 | |
830247a4 | 3278 | /* adjust RExC_parse so the warning shows after |
b45f050a | 3279 | the class closes */ |
830247a4 IZ |
3280 | while (*RExC_parse && *RExC_parse != ']') |
3281 | RExC_parse++; | |
b45f050a JF |
3282 | Simple_vFAIL3("POSIX syntax [%c %c] is reserved for future extensions", c, c); |
3283 | } | |
b8c5462f JH |
3284 | } else { |
3285 | /* Maternal grandfather: | |
3286 | * "[:" ending in ":" but not in ":]" */ | |
830247a4 | 3287 | RExC_parse = s; |
767d463e | 3288 | } |
620e46c5 JH |
3289 | } |
3290 | } | |
3291 | ||
b8c5462f JH |
3292 | return namedclass; |
3293 | } | |
3294 | ||
3295 | STATIC void | |
830247a4 | 3296 | S_checkposixcc(pTHX_ RExC_state_t *pRExC_state) |
b8c5462f | 3297 | { |
e476b1b5 | 3298 | if (!SIZE_ONLY && ckWARN(WARN_REGEXP) && |
830247a4 IZ |
3299 | (*RExC_parse == ':' || |
3300 | *RExC_parse == '=' || | |
3301 | *RExC_parse == '.')) { | |
3302 | char *s = RExC_parse; | |
93733859 | 3303 | char c = *s++; |
b8c5462f JH |
3304 | |
3305 | while(*s && isALNUM(*s)) | |
3306 | s++; | |
3307 | if (*s && c == *s && s[1] == ']') { | |
b45f050a JF |
3308 | vWARN3(s+2, "POSIX syntax [%c %c] belongs inside character classes", c, c); |
3309 | ||
3310 | /* [[=foo=]] and [[.foo.]] are still future. */ | |
b8c5462f | 3311 | if (c == '=' || c == '.') |
b45f050a | 3312 | { |
830247a4 | 3313 | /* adjust RExC_parse so the error shows after |
b45f050a | 3314 | the class closes */ |
830247a4 | 3315 | while (*RExC_parse && *RExC_parse++ != ']') |
b45f050a JF |
3316 | ; |
3317 | Simple_vFAIL3("POSIX syntax [%c %c] is reserved for future extensions", c, c); | |
3318 | } | |
b8c5462f JH |
3319 | } |
3320 | } | |
620e46c5 JH |
3321 | } |
3322 | ||
76e3520e | 3323 | STATIC regnode * |
830247a4 | 3324 | S_regclass(pTHX_ RExC_state_t *pRExC_state) |
a687059c | 3325 | { |
ffc61ed2 | 3326 | register UV value; |
3568d838 | 3327 | register IV prevvalue = OOB_UNICODE; |
ffc61ed2 | 3328 | register IV range = 0; |
c277df42 | 3329 | register regnode *ret; |
ba210ebe | 3330 | STRLEN numlen; |
ffc61ed2 | 3331 | IV namedclass; |
9c5ffd7c | 3332 | char *rangebegin = 0; |
936ed897 | 3333 | bool need_class = 0; |
9c5ffd7c | 3334 | SV *listsv = Nullsv; |
ffc61ed2 JH |
3335 | register char *e; |
3336 | UV n; | |
3568d838 | 3337 | bool optimize_invert = TRUE; |
ffc61ed2 JH |
3338 | |
3339 | ret = reganode(pRExC_state, ANYOF, 0); | |
3340 | ||
3341 | if (!SIZE_ONLY) | |
3342 | ANYOF_FLAGS(ret) = 0; | |
3343 | ||
3344 | if (*RExC_parse == '^') { /* Complement of range. */ | |
3345 | RExC_naughty++; | |
3346 | RExC_parse++; | |
3347 | if (!SIZE_ONLY) | |
3348 | ANYOF_FLAGS(ret) |= ANYOF_INVERT; | |
3349 | } | |
a0d0e21e | 3350 | |
936ed897 | 3351 | if (SIZE_ONLY) |
830247a4 | 3352 | RExC_size += ANYOF_SKIP; |
936ed897 | 3353 | else { |
830247a4 | 3354 | RExC_emit += ANYOF_SKIP; |
936ed897 IZ |
3355 | if (FOLD) |
3356 | ANYOF_FLAGS(ret) |= ANYOF_FOLD; | |
3357 | if (LOC) | |
3358 | ANYOF_FLAGS(ret) |= ANYOF_LOCALE; | |
ffc61ed2 JH |
3359 | ANYOF_BITMAP_ZERO(ret); |
3360 | listsv = newSVpvn("# comment\n", 10); | |
a0d0e21e | 3361 | } |
b8c5462f | 3362 | |
e476b1b5 | 3363 | if (!SIZE_ONLY && ckWARN(WARN_REGEXP)) |
830247a4 | 3364 | checkposixcc(pRExC_state); |
b8c5462f | 3365 | |
830247a4 | 3366 | if (*RExC_parse == ']' || *RExC_parse == '-') |
ffc61ed2 JH |
3367 | goto charclassloop; /* allow 1st char to be ] or - */ |
3368 | ||
830247a4 | 3369 | while (RExC_parse < RExC_end && *RExC_parse != ']') { |
ffc61ed2 JH |
3370 | |
3371 | charclassloop: | |
3372 | ||
3373 | namedclass = OOB_NAMEDCLASS; /* initialize as illegal */ | |
3374 | ||
73b437c8 | 3375 | if (!range) |
830247a4 | 3376 | rangebegin = RExC_parse; |
ffc61ed2 | 3377 | if (UTF) { |
5e12f4fb | 3378 | value = utf8n_to_uvchr((U8*)RExC_parse, |
3568d838 JH |
3379 | RExC_end - RExC_parse, |
3380 | &numlen, 0); | |
ffc61ed2 JH |
3381 | RExC_parse += numlen; |
3382 | } | |
3383 | else | |
3384 | value = UCHARAT(RExC_parse++); | |
620e46c5 | 3385 | if (value == '[') |
830247a4 | 3386 | namedclass = regpposixcc(pRExC_state, value); |
620e46c5 | 3387 | else if (value == '\\') { |
ffc61ed2 | 3388 | if (UTF) { |
5e12f4fb | 3389 | value = utf8n_to_uvchr((U8*)RExC_parse, |
ffc61ed2 JH |
3390 | RExC_end - RExC_parse, |
3391 | &numlen, 0); | |
3392 | RExC_parse += numlen; | |
3393 | } | |
3394 | else | |
3395 | value = UCHARAT(RExC_parse++); | |
470c3474 | 3396 | /* Some compilers cannot handle switching on 64-bit integer |
ffc61ed2 | 3397 | * values, therefore value cannot be an UV. Yes, this will |
e2962f66 JH |
3398 | * be a problem later if we want switch on Unicode. |
3399 | * A similar issue a little bit later when switching on | |
3400 | * namedclass. --jhi */ | |
ffc61ed2 | 3401 | switch ((I32)value) { |
b8c5462f JH |
3402 | case 'w': namedclass = ANYOF_ALNUM; break; |
3403 | case 'W': namedclass = ANYOF_NALNUM; break; | |
3404 | case 's': namedclass = ANYOF_SPACE; break; | |
3405 | case 'S': namedclass = ANYOF_NSPACE; break; | |
3406 | case 'd': namedclass = ANYOF_DIGIT; break; | |
3407 | case 'D': namedclass = ANYOF_NDIGIT; break; | |
ffc61ed2 JH |
3408 | case 'p': |
3409 | case 'P': | |
3410 | if (*RExC_parse == '{') { | |
3411 | e = strchr(RExC_parse++, '}'); | |
3412 | if (!e) | |
3413 | vFAIL("Missing right brace on \\p{}"); | |
3414 | n = e - RExC_parse; | |
3415 | } | |
3416 | else { | |
3417 | e = RExC_parse; | |
3418 | n = 1; | |
3419 | } | |
3420 | if (!SIZE_ONLY) { | |
3421 | if (value == 'p') | |
3422 | Perl_sv_catpvf(aTHX_ listsv, | |
3423 | "+utf8::%.*s\n", (int)n, RExC_parse); | |
3424 | else | |
3425 | Perl_sv_catpvf(aTHX_ listsv, | |
3426 | "!utf8::%.*s\n", (int)n, RExC_parse); | |
3427 | } | |
3428 | RExC_parse = e + 1; | |
3429 | ANYOF_FLAGS(ret) |= ANYOF_UNICODE; | |
3430 | continue; | |
b8c5462f JH |
3431 | case 'n': value = '\n'; break; |
3432 | case 'r': value = '\r'; break; | |
3433 | case 't': value = '\t'; break; | |
3434 | case 'f': value = '\f'; break; | |
3435 | case 'b': value = '\b'; break; | |
c7f1f016 NIS |
3436 | case 'e': value = ASCII_TO_NATIVE('\033');break; |
3437 | case 'a': value = ASCII_TO_NATIVE('\007');break; | |
b8c5462f | 3438 | case 'x': |
ffc61ed2 JH |
3439 | if (*RExC_parse == '{') { |
3440 | e = strchr(RExC_parse++, '}'); | |
b81d288d | 3441 | if (!e) |
ffc61ed2 JH |
3442 | vFAIL("Missing right brace on \\x{}"); |
3443 | numlen = 1; /* allow underscores */ | |
3444 | value = (UV)scan_hex(RExC_parse, | |
3445 | e - RExC_parse, | |
3446 | &numlen); | |
3447 | RExC_parse = e + 1; | |
3448 | } | |
3449 | else { | |
3450 | numlen = 0; /* disallow underscores */ | |
3451 | value = (UV)scan_hex(RExC_parse, 2, &numlen); | |
3452 | RExC_parse += numlen; | |
3453 | } | |
b8c5462f JH |
3454 | break; |
3455 | case 'c': | |
830247a4 | 3456 | value = UCHARAT(RExC_parse++); |
b8c5462f JH |
3457 | value = toCTRL(value); |
3458 | break; | |
3459 | case '0': case '1': case '2': case '3': case '4': | |
3460 | case '5': case '6': case '7': case '8': case '9': | |
b21ed0a9 | 3461 | numlen = 0; /* disallow underscores */ |
830247a4 IZ |
3462 | value = (UV)scan_oct(--RExC_parse, 3, &numlen); |
3463 | RExC_parse += numlen; | |
b8c5462f | 3464 | break; |
1028017a | 3465 | default: |
e476b1b5 | 3466 | if (!SIZE_ONLY && ckWARN(WARN_REGEXP) && isALPHA(value)) |
ffc61ed2 JH |
3467 | vWARN2(RExC_parse, |
3468 | "Unrecognized escape \\%c in character class passed through", | |
3469 | (int)value); | |
1028017a | 3470 | break; |
b8c5462f | 3471 | } |
ffc61ed2 JH |
3472 | } /* end of \blah */ |
3473 | ||
3474 | if (namedclass > OOB_NAMEDCLASS) { /* this is a named class \blah */ | |
3475 | ||
3476 | if (!SIZE_ONLY && !need_class) | |
936ed897 | 3477 | ANYOF_CLASS_ZERO(ret); |
ffc61ed2 | 3478 | |
936ed897 | 3479 | need_class = 1; |
ffc61ed2 JH |
3480 | |
3481 | /* a bad range like a-\d, a-[:digit:] ? */ | |
3482 | if (range) { | |
73b437c8 | 3483 | if (!SIZE_ONLY) { |
e476b1b5 | 3484 | if (ckWARN(WARN_REGEXP)) |
830247a4 | 3485 | vWARN4(RExC_parse, |
b45f050a | 3486 | "False [] range \"%*.*s\"", |
830247a4 IZ |
3487 | RExC_parse - rangebegin, |
3488 | RExC_parse - rangebegin, | |
b45f050a | 3489 | rangebegin); |
3568d838 JH |
3490 | if (prevvalue < 256) { |
3491 | ANYOF_BITMAP_SET(ret, prevvalue); | |
ffc61ed2 JH |
3492 | ANYOF_BITMAP_SET(ret, '-'); |
3493 | } | |
3494 | else { | |
3495 | ANYOF_FLAGS(ret) |= ANYOF_UNICODE; | |
3496 | Perl_sv_catpvf(aTHX_ listsv, | |
3568d838 | 3497 | "%04"UVxf"\n%04"UVxf"\n", (UV)prevvalue, (UV) '-'); |
ffc61ed2 | 3498 | } |
b8c5462f | 3499 | } |
ffc61ed2 JH |
3500 | |
3501 | range = 0; /* this was not a true range */ | |
73b437c8 | 3502 | } |
ffc61ed2 | 3503 | |
73b437c8 | 3504 | if (!SIZE_ONLY) { |
3568d838 JH |
3505 | if (namedclass > OOB_NAMEDCLASS) |
3506 | optimize_invert = FALSE; | |
e2962f66 JH |
3507 | /* Possible truncation here but in some 64-bit environments |
3508 | * the compiler gets heartburn about switch on 64-bit values. | |
3509 | * A similar issue a little earlier when switching on value. | |
98f323fa | 3510 | * --jhi */ |
e2962f66 | 3511 | switch ((I32)namedclass) { |
73b437c8 JH |
3512 | case ANYOF_ALNUM: |
3513 | if (LOC) | |
936ed897 | 3514 | ANYOF_CLASS_SET(ret, ANYOF_ALNUM); |
73b437c8 JH |
3515 | else { |
3516 | for (value = 0; value < 256; value++) | |
3517 | if (isALNUM(value)) | |
936ed897 | 3518 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3519 | } |
ffc61ed2 | 3520 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsWord\n"); |
73b437c8 JH |
3521 | break; |
3522 | case ANYOF_NALNUM: | |
3523 | if (LOC) | |
936ed897 | 3524 | ANYOF_CLASS_SET(ret, ANYOF_NALNUM); |
73b437c8 JH |
3525 | else { |
3526 | for (value = 0; value < 256; value++) | |
3527 | if (!isALNUM(value)) | |
936ed897 | 3528 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3529 | } |
ffc61ed2 | 3530 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsWord\n"); |
73b437c8 | 3531 | break; |
ffc61ed2 | 3532 | case ANYOF_ALNUMC: |
73b437c8 | 3533 | if (LOC) |
ffc61ed2 | 3534 | ANYOF_CLASS_SET(ret, ANYOF_ALNUMC); |
73b437c8 JH |
3535 | else { |
3536 | for (value = 0; value < 256; value++) | |
ffc61ed2 | 3537 | if (isALNUMC(value)) |
936ed897 | 3538 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3539 | } |
ffc61ed2 | 3540 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsAlnum\n"); |
73b437c8 JH |
3541 | break; |
3542 | case ANYOF_NALNUMC: | |
3543 | if (LOC) | |
936ed897 | 3544 | ANYOF_CLASS_SET(ret, ANYOF_NALNUMC); |
73b437c8 JH |
3545 | else { |
3546 | for (value = 0; value < 256; value++) | |
3547 | if (!isALNUMC(value)) | |
936ed897 | 3548 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3549 | } |
ffc61ed2 | 3550 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsAlnum\n"); |
73b437c8 JH |
3551 | break; |
3552 | case ANYOF_ALPHA: | |
3553 | if (LOC) | |
936ed897 | 3554 | ANYOF_CLASS_SET(ret, ANYOF_ALPHA); |
73b437c8 JH |
3555 | else { |
3556 | for (value = 0; value < 256; value++) | |
3557 | if (isALPHA(value)) | |
936ed897 | 3558 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3559 | } |
ffc61ed2 | 3560 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsAlpha\n"); |
73b437c8 JH |
3561 | break; |
3562 | case ANYOF_NALPHA: | |
3563 | if (LOC) | |
936ed897 | 3564 | ANYOF_CLASS_SET(ret, ANYOF_NALPHA); |
73b437c8 JH |
3565 | else { |
3566 | for (value = 0; value < 256; value++) | |
3567 | if (!isALPHA(value)) | |
936ed897 | 3568 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3569 | } |
ffc61ed2 | 3570 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsAlpha\n"); |
73b437c8 JH |
3571 | break; |
3572 | case ANYOF_ASCII: | |
3573 | if (LOC) | |
936ed897 | 3574 | ANYOF_CLASS_SET(ret, ANYOF_ASCII); |
73b437c8 | 3575 | else { |
c7f1f016 | 3576 | #ifndef EBCDIC |
1ba5c669 JH |
3577 | for (value = 0; value < 128; value++) |
3578 | ANYOF_BITMAP_SET(ret, value); | |
3579 | #else /* EBCDIC */ | |
ffbc6a93 | 3580 | for (value = 0; value < 256; value++) { |
3a3c4447 JH |
3581 | if (isASCII(value)) |
3582 | ANYOF_BITMAP_SET(ret, value); | |
ffbc6a93 | 3583 | } |
1ba5c669 | 3584 | #endif /* EBCDIC */ |
73b437c8 | 3585 | } |
ffc61ed2 | 3586 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsASCII\n"); |
73b437c8 JH |
3587 | break; |
3588 | case ANYOF_NASCII: | |
3589 | if (LOC) | |
936ed897 | 3590 | ANYOF_CLASS_SET(ret, ANYOF_NASCII); |
73b437c8 | 3591 | else { |
c7f1f016 | 3592 | #ifndef EBCDIC |
1ba5c669 JH |
3593 | for (value = 128; value < 256; value++) |
3594 | ANYOF_BITMAP_SET(ret, value); | |
3595 | #else /* EBCDIC */ | |
ffbc6a93 | 3596 | for (value = 0; value < 256; value++) { |
3a3c4447 JH |
3597 | if (!isASCII(value)) |
3598 | ANYOF_BITMAP_SET(ret, value); | |
ffbc6a93 | 3599 | } |
1ba5c669 | 3600 | #endif /* EBCDIC */ |
73b437c8 | 3601 | } |
ffc61ed2 | 3602 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsASCII\n"); |
73b437c8 | 3603 | break; |
aaa51d5e JF |
3604 | case ANYOF_BLANK: |
3605 | if (LOC) | |
3606 | ANYOF_CLASS_SET(ret, ANYOF_BLANK); | |
3607 | else { | |
3608 | for (value = 0; value < 256; value++) | |
3609 | if (isBLANK(value)) | |
3610 | ANYOF_BITMAP_SET(ret, value); | |
3611 | } | |
ffc61ed2 | 3612 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsBlank\n"); |
aaa51d5e JF |
3613 | break; |
3614 | case ANYOF_NBLANK: | |
3615 | if (LOC) | |
3616 | ANYOF_CLASS_SET(ret, ANYOF_NBLANK); | |
3617 | else { | |
3618 | for (value = 0; value < 256; value++) | |
3619 | if (!isBLANK(value)) | |
3620 | ANYOF_BITMAP_SET(ret, value); | |
3621 | } | |
ffc61ed2 | 3622 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsBlank\n"); |
aaa51d5e | 3623 | break; |
73b437c8 JH |
3624 | case ANYOF_CNTRL: |
3625 | if (LOC) | |
936ed897 | 3626 | ANYOF_CLASS_SET(ret, ANYOF_CNTRL); |
73b437c8 JH |
3627 | else { |
3628 | for (value = 0; value < 256; value++) | |
3629 | if (isCNTRL(value)) | |
936ed897 | 3630 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3631 | } |
ffc61ed2 | 3632 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsCntrl\n"); |
73b437c8 JH |
3633 | break; |
3634 | case ANYOF_NCNTRL: | |
3635 | if (LOC) | |
936ed897 | 3636 | ANYOF_CLASS_SET(ret, ANYOF_NCNTRL); |
73b437c8 JH |
3637 | else { |
3638 | for (value = 0; value < 256; value++) | |
3639 | if (!isCNTRL(value)) | |
936ed897 | 3640 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3641 | } |
ffc61ed2 JH |
3642 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsCntrl\n"); |
3643 | break; | |
3644 | case ANYOF_DIGIT: | |
3645 | if (LOC) | |
3646 | ANYOF_CLASS_SET(ret, ANYOF_DIGIT); | |
3647 | else { | |
3648 | /* consecutive digits assumed */ | |
3649 | for (value = '0'; value <= '9'; value++) | |
3650 | ANYOF_BITMAP_SET(ret, value); | |
3651 | } | |
3652 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsDigit\n"); | |
3653 | break; | |
3654 | case ANYOF_NDIGIT: | |
3655 | if (LOC) | |
3656 | ANYOF_CLASS_SET(ret, ANYOF_NDIGIT); | |
3657 | else { | |
3658 | /* consecutive digits assumed */ | |
3659 | for (value = 0; value < '0'; value++) | |
3660 | ANYOF_BITMAP_SET(ret, value); | |
3661 | for (value = '9' + 1; value < 256; value++) | |
3662 | ANYOF_BITMAP_SET(ret, value); | |
3663 | } | |
3664 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsDigit\n"); | |
73b437c8 JH |
3665 | break; |
3666 | case ANYOF_GRAPH: | |
3667 | if (LOC) | |
936ed897 | 3668 | ANYOF_CLASS_SET(ret, ANYOF_GRAPH); |
73b437c8 JH |
3669 | else { |
3670 | for (value = 0; value < 256; value++) | |
3671 | if (isGRAPH(value)) | |
936ed897 | 3672 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3673 | } |
ffc61ed2 | 3674 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsGraph\n"); |
73b437c8 JH |
3675 | break; |
3676 | case ANYOF_NGRAPH: | |
3677 | if (LOC) | |
936ed897 | 3678 | ANYOF_CLASS_SET(ret, ANYOF_NGRAPH); |
73b437c8 JH |
3679 | else { |
3680 | for (value = 0; value < 256; value++) | |
3681 | if (!isGRAPH(value)) | |
936ed897 | 3682 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3683 | } |
ffc61ed2 | 3684 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsGraph\n"); |
73b437c8 JH |
3685 | break; |
3686 | case ANYOF_LOWER: | |
3687 | if (LOC) | |
936ed897 | 3688 | ANYOF_CLASS_SET(ret, ANYOF_LOWER); |
73b437c8 JH |
3689 | else { |
3690 | for (value = 0; value < 256; value++) | |
3691 | if (isLOWER(value)) | |
936ed897 | 3692 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3693 | } |
ffc61ed2 | 3694 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsLower\n"); |
73b437c8 JH |
3695 | break; |
3696 | case ANYOF_NLOWER: | |
3697 | if (LOC) | |
936ed897 | 3698 | ANYOF_CLASS_SET(ret, ANYOF_NLOWER); |
73b437c8 JH |
3699 | else { |
3700 | for (value = 0; value < 256; value++) | |
3701 | if (!isLOWER(value)) | |
936ed897 | 3702 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3703 | } |
ffc61ed2 | 3704 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsLower\n"); |
73b437c8 JH |
3705 | break; |
3706 | case ANYOF_PRINT: | |
3707 | if (LOC) | |
936ed897 | 3708 | ANYOF_CLASS_SET(ret, ANYOF_PRINT); |
73b437c8 JH |
3709 | else { |
3710 | for (value = 0; value < 256; value++) | |
3711 | if (isPRINT(value)) | |
936ed897 | 3712 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3713 | } |
ffc61ed2 | 3714 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsPrint\n"); |
73b437c8 JH |
3715 | break; |
3716 | case ANYOF_NPRINT: | |
3717 | if (LOC) | |
936ed897 | 3718 | ANYOF_CLASS_SET(ret, ANYOF_NPRINT); |
73b437c8 JH |
3719 | else { |
3720 | for (value = 0; value < 256; value++) | |
3721 | if (!isPRINT(value)) | |
936ed897 | 3722 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3723 | } |
ffc61ed2 | 3724 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsPrint\n"); |
73b437c8 | 3725 | break; |
aaa51d5e JF |
3726 | case ANYOF_PSXSPC: |
3727 | if (LOC) | |
3728 | ANYOF_CLASS_SET(ret, ANYOF_PSXSPC); | |
3729 | else { | |
3730 | for (value = 0; value < 256; value++) | |
3731 | if (isPSXSPC(value)) | |
3732 | ANYOF_BITMAP_SET(ret, value); | |
3733 | } | |
ffc61ed2 | 3734 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsSpace\n"); |
aaa51d5e JF |
3735 | break; |
3736 | case ANYOF_NPSXSPC: | |
3737 | if (LOC) | |
3738 | ANYOF_CLASS_SET(ret, ANYOF_NPSXSPC); | |
3739 | else { | |
3740 | for (value = 0; value < 256; value++) | |
3741 | if (!isPSXSPC(value)) | |
3742 | ANYOF_BITMAP_SET(ret, value); | |
3743 | } | |
ffc61ed2 | 3744 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsSpace\n"); |
aaa51d5e | 3745 | break; |
73b437c8 JH |
3746 | case ANYOF_PUNCT: |
3747 | if (LOC) | |
936ed897 | 3748 | ANYOF_CLASS_SET(ret, ANYOF_PUNCT); |
73b437c8 JH |
3749 | else { |
3750 | for (value = 0; value < 256; value++) | |
3751 | if (isPUNCT(value)) | |
936ed897 | 3752 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3753 | } |
ffc61ed2 | 3754 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsPunct\n"); |
73b437c8 JH |
3755 | break; |
3756 | case ANYOF_NPUNCT: | |
3757 | if (LOC) | |
936ed897 | 3758 | ANYOF_CLASS_SET(ret, ANYOF_NPUNCT); |
73b437c8 JH |
3759 | else { |
3760 | for (value = 0; value < 256; value++) | |
3761 | if (!isPUNCT(value)) | |
936ed897 | 3762 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3763 | } |
ffc61ed2 JH |
3764 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsPunct\n"); |
3765 | break; | |
3766 | case ANYOF_SPACE: | |
3767 | if (LOC) | |
3768 | ANYOF_CLASS_SET(ret, ANYOF_SPACE); | |
3769 | else { | |
3770 | for (value = 0; value < 256; value++) | |
3771 | if (isSPACE(value)) | |
3772 | ANYOF_BITMAP_SET(ret, value); | |
3773 | } | |
3774 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsSpacePerl\n"); | |
3775 | break; | |
3776 | case ANYOF_NSPACE: | |
3777 | if (LOC) | |
3778 | ANYOF_CLASS_SET(ret, ANYOF_NSPACE); | |
3779 | else { | |
3780 | for (value = 0; value < 256; value++) | |
3781 | if (!isSPACE(value)) | |
3782 | ANYOF_BITMAP_SET(ret, value); | |
3783 | } | |
3784 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsSpacePerl\n"); | |
73b437c8 JH |
3785 | break; |
3786 | case ANYOF_UPPER: | |
3787 | if (LOC) | |
936ed897 | 3788 | ANYOF_CLASS_SET(ret, ANYOF_UPPER); |
73b437c8 JH |
3789 | else { |
3790 | for (value = 0; value < 256; value++) | |
3791 | if (isUPPER(value)) | |
936ed897 | 3792 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3793 | } |
ffc61ed2 | 3794 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsUpper\n"); |
73b437c8 JH |
3795 | break; |
3796 | case ANYOF_NUPPER: | |
3797 | if (LOC) | |
936ed897 | 3798 | ANYOF_CLASS_SET(ret, ANYOF_NUPPER); |
73b437c8 JH |
3799 | else { |
3800 | for (value = 0; value < 256; value++) | |
3801 | if (!isUPPER(value)) | |
936ed897 | 3802 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3803 | } |
ffc61ed2 | 3804 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsUpper\n"); |
73b437c8 JH |
3805 | break; |
3806 | case ANYOF_XDIGIT: | |
3807 | if (LOC) | |
936ed897 | 3808 | ANYOF_CLASS_SET(ret, ANYOF_XDIGIT); |
73b437c8 JH |
3809 | else { |
3810 | for (value = 0; value < 256; value++) | |
3811 | if (isXDIGIT(value)) | |
936ed897 | 3812 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3813 | } |
ffc61ed2 | 3814 | Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsXDigit\n"); |
73b437c8 JH |
3815 | break; |
3816 | case ANYOF_NXDIGIT: | |
3817 | if (LOC) | |
936ed897 | 3818 | ANYOF_CLASS_SET(ret, ANYOF_NXDIGIT); |
73b437c8 JH |
3819 | else { |
3820 | for (value = 0; value < 256; value++) | |
3821 | if (!isXDIGIT(value)) | |
936ed897 | 3822 | ANYOF_BITMAP_SET(ret, value); |
73b437c8 | 3823 | } |
ffc61ed2 | 3824 | Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsXDigit\n"); |
73b437c8 JH |
3825 | break; |
3826 | default: | |
b45f050a | 3827 | vFAIL("Invalid [::] class"); |
73b437c8 | 3828 | break; |
b8c5462f | 3829 | } |
b8c5462f | 3830 | if (LOC) |
936ed897 | 3831 | ANYOF_FLAGS(ret) |= ANYOF_CLASS; |
73b437c8 | 3832 | continue; |
a0d0e21e | 3833 | } |
ffc61ed2 JH |
3834 | } /* end of namedclass \blah */ |
3835 | ||
a0d0e21e | 3836 | if (range) { |
3a3c4447 | 3837 | if (prevvalue > value) /* b-a */ { |
b45f050a | 3838 | Simple_vFAIL4("Invalid [] range \"%*.*s\"", |
830247a4 IZ |
3839 | RExC_parse - rangebegin, |
3840 | RExC_parse - rangebegin, | |
b45f050a | 3841 | rangebegin); |
3568d838 | 3842 | range = 0; /* not a valid range */ |
73b437c8 | 3843 | } |
a0d0e21e LW |
3844 | } |
3845 | else { | |
3568d838 | 3846 | prevvalue = value; /* save the beginning of the range */ |
830247a4 IZ |
3847 | if (*RExC_parse == '-' && RExC_parse+1 < RExC_end && |
3848 | RExC_parse[1] != ']') { | |
3849 | RExC_parse++; | |
ffc61ed2 JH |
3850 | |
3851 | /* a bad range like \w-, [:word:]- ? */ | |
3852 | if (namedclass > OOB_NAMEDCLASS) { | |
e476b1b5 | 3853 | if (ckWARN(WARN_REGEXP)) |
830247a4 | 3854 | vWARN4(RExC_parse, |
b45f050a | 3855 | "False [] range \"%*.*s\"", |
830247a4 IZ |
3856 | RExC_parse - rangebegin, |
3857 | RExC_parse - rangebegin, | |
b45f050a | 3858 | rangebegin); |
73b437c8 | 3859 | if (!SIZE_ONLY) |
936ed897 | 3860 | ANYOF_BITMAP_SET(ret, '-'); |
73b437c8 | 3861 | } else |
ffc61ed2 JH |
3862 | range = 1; /* yeah, it's a range! */ |
3863 | continue; /* but do it the next time */ | |
a0d0e21e | 3864 | } |
a687059c | 3865 | } |
ffc61ed2 | 3866 | |
93733859 | 3867 | /* now is the next time */ |
ae5c130c | 3868 | if (!SIZE_ONLY) { |
3568d838 JH |
3869 | IV i; |
3870 | ||
3871 | if (prevvalue < 256) { | |
3872 | IV ceilvalue = value < 256 ? value : 255; | |
3873 | ||
3874 | #ifdef EBCDIC | |
3a3c4447 JH |
3875 | if ((isLOWER(prevvalue) && isLOWER(ceilvalue)) || |
3876 | (isUPPER(prevvalue) && isUPPER(ceilvalue))) | |
ffc61ed2 | 3877 | { |
3568d838 JH |
3878 | if (isLOWER(prevvalue)) { |
3879 | for (i = prevvalue; i <= ceilvalue; i++) | |
ffc61ed2 JH |
3880 | if (isLOWER(i)) |
3881 | ANYOF_BITMAP_SET(ret, i); | |
3882 | } else { | |
3568d838 | 3883 | for (i = prevvalue; i <= ceilvalue; i++) |
ffc61ed2 JH |
3884 | if (isUPPER(i)) |
3885 | ANYOF_BITMAP_SET(ret, i); | |
3886 | } | |
8ada0baa | 3887 | } |
ffc61ed2 | 3888 | else |
8ada0baa | 3889 | #endif |
3568d838 JH |
3890 | for (i = prevvalue; i <= ceilvalue; i++) |
3891 | ANYOF_BITMAP_SET(ret, i); | |
3892 | } | |
3893 | if (value > 255) { | |
ffc61ed2 | 3894 | ANYOF_FLAGS(ret) |= ANYOF_UNICODE; |
3568d838 | 3895 | if (prevvalue < value) |
ffc61ed2 | 3896 | Perl_sv_catpvf(aTHX_ listsv, "%04"UVxf"\t%04"UVxf"\n", |
3568d838 JH |
3897 | (UV)prevvalue, (UV)value); |
3898 | else if (prevvalue == value) | |
ffc61ed2 JH |
3899 | Perl_sv_catpvf(aTHX_ listsv, "%04"UVxf"\n", |
3900 | (UV)value); | |
3901 | } | |
8ada0baa | 3902 | } |
ffc61ed2 JH |
3903 | |
3904 | range = 0; /* this range (if it was one) is done now */ | |
a0d0e21e | 3905 | } |
ffc61ed2 | 3906 | |
936ed897 | 3907 | if (need_class) { |
4f66b38d | 3908 | ANYOF_FLAGS(ret) |= ANYOF_LARGE; |
936ed897 | 3909 | if (SIZE_ONLY) |
830247a4 | 3910 | RExC_size += ANYOF_CLASS_ADD_SKIP; |
936ed897 | 3911 | else |
830247a4 | 3912 | RExC_emit += ANYOF_CLASS_ADD_SKIP; |
936ed897 | 3913 | } |
ffc61ed2 | 3914 | |
ae5c130c | 3915 | /* optimize case-insensitive simple patterns (e.g. /[a-z]/i) */ |
b8c5462f | 3916 | if (!SIZE_ONLY && |
ffc61ed2 | 3917 | /* If the only flag is folding (plus possibly inversion). */ |
516a5887 JH |
3918 | ((ANYOF_FLAGS(ret) & (ANYOF_FLAGS_ALL ^ ANYOF_INVERT)) == ANYOF_FOLD) |
3919 | ) { | |
a0ed51b3 | 3920 | for (value = 0; value < 256; ++value) { |
936ed897 | 3921 | if (ANYOF_BITMAP_TEST(ret, value)) { |
ffc61ed2 JH |
3922 | IV fold = PL_fold[value]; |
3923 | ||
3924 | if (fold != value) | |
3925 | ANYOF_BITMAP_SET(ret, fold); | |
ae5c130c GS |
3926 | } |
3927 | } | |
936ed897 | 3928 | ANYOF_FLAGS(ret) &= ~ANYOF_FOLD; |
ae5c130c | 3929 | } |
ffc61ed2 | 3930 | |
ae5c130c | 3931 | /* optimize inverted simple patterns (e.g. [^a-z]) */ |
3568d838 | 3932 | if (!SIZE_ONLY && optimize_invert && |
ffc61ed2 JH |
3933 | /* If the only flag is inversion. */ |
3934 | (ANYOF_FLAGS(ret) & ANYOF_FLAGS_ALL) == ANYOF_INVERT) { | |
b8c5462f | 3935 | for (value = 0; value < ANYOF_BITMAP_SIZE; ++value) |
936ed897 | 3936 | ANYOF_BITMAP(ret)[value] ^= ANYOF_FLAGS_ALL; |
1aa99e6b | 3937 | ANYOF_FLAGS(ret) = ANYOF_UNICODE_ALL; |
ae5c130c | 3938 | } |
a0d0e21e | 3939 | |
b81d288d | 3940 | if (!SIZE_ONLY) { |
fde631ed | 3941 | AV *av = newAV(); |
ffc61ed2 JH |
3942 | SV *rv; |
3943 | ||
3944 | av_store(av, 0, listsv); | |
3945 | av_store(av, 1, NULL); | |
3946 | rv = newRV_noinc((SV*)av); | |
19860706 | 3947 | n = add_data(pRExC_state, 1, "s"); |
830247a4 | 3948 | RExC_rx->data->data[n] = (void*)rv; |
ffc61ed2 | 3949 | ARG_SET(ret, n); |
a0ed51b3 LW |
3950 | } |
3951 | ||
3952 | return ret; | |
3953 | } | |
3954 | ||
76e3520e | 3955 | STATIC char* |
830247a4 | 3956 | S_nextchar(pTHX_ RExC_state_t *pRExC_state) |
a0d0e21e | 3957 | { |
830247a4 | 3958 | char* retval = RExC_parse++; |
a0d0e21e | 3959 | |
4633a7c4 | 3960 | for (;;) { |
830247a4 IZ |
3961 | if (*RExC_parse == '(' && RExC_parse[1] == '?' && |
3962 | RExC_parse[2] == '#') { | |
3963 | while (*RExC_parse && *RExC_parse != ')') | |
3964 | RExC_parse++; | |
3965 | RExC_parse++; | |
4633a7c4 LW |
3966 | continue; |
3967 | } | |
830247a4 IZ |
3968 | if (RExC_flags16 & PMf_EXTENDED) { |
3969 | if (isSPACE(*RExC_parse)) { | |
3970 | RExC_parse++; | |
748a9306 LW |
3971 | continue; |
3972 | } | |
830247a4 IZ |
3973 | else if (*RExC_parse == '#') { |
3974 | while (*RExC_parse && *RExC_parse != '\n') | |
3975 | RExC_parse++; | |
3976 | RExC_parse++; | |
748a9306 LW |
3977 | continue; |
3978 | } | |
748a9306 | 3979 | } |
4633a7c4 | 3980 | return retval; |
a0d0e21e | 3981 | } |
a687059c LW |
3982 | } |
3983 | ||
3984 | /* | |
c277df42 | 3985 | - reg_node - emit a node |
a0d0e21e | 3986 | */ |
76e3520e | 3987 | STATIC regnode * /* Location. */ |
830247a4 | 3988 | S_reg_node(pTHX_ RExC_state_t *pRExC_state, U8 op) |
a687059c | 3989 | { |
c277df42 IZ |
3990 | register regnode *ret; |
3991 | register regnode *ptr; | |
a687059c | 3992 | |
830247a4 | 3993 | ret = RExC_emit; |
c277df42 | 3994 | if (SIZE_ONLY) { |
830247a4 IZ |
3995 | SIZE_ALIGN(RExC_size); |
3996 | RExC_size += 1; | |
a0d0e21e LW |
3997 | return(ret); |
3998 | } | |
a687059c | 3999 | |
c277df42 | 4000 | NODE_ALIGN_FILL(ret); |
a0d0e21e | 4001 | ptr = ret; |
c277df42 | 4002 | FILL_ADVANCE_NODE(ptr, op); |
fac92740 MJD |
4003 | if (RExC_offsets) { /* MJD */ |
4004 | MJD_OFFSET_DEBUG((stderr, "%s:%u: (op %s) %s %u <- %u (len %u) (max %u).\n", | |
4005 | "reg_node", __LINE__, | |
4006 | reg_name[op], | |
4007 | RExC_emit - RExC_emit_start > RExC_offsets[0] | |
4008 | ? "Overwriting end of array!\n" : "OK", | |
4009 | RExC_emit - RExC_emit_start, | |
4010 | RExC_parse - RExC_start, | |
4011 | RExC_offsets[0])); | |
4012 | Set_Node_Offset(RExC_emit, RExC_parse + (op == END)); | |
4013 | } | |
4014 | ||
830247a4 | 4015 | RExC_emit = ptr; |
a687059c | 4016 | |
a0d0e21e | 4017 | return(ret); |
a687059c LW |
4018 | } |
4019 | ||
4020 | /* | |
a0d0e21e LW |
4021 | - reganode - emit a node with an argument |
4022 | */ | |
76e3520e | 4023 | STATIC regnode * /* Location. */ |
830247a4 | 4024 | S_reganode(pTHX_ RExC_state_t *pRExC_state, U8 op, U32 arg) |
fe14fcc3 | 4025 | { |
c277df42 IZ |
4026 | register regnode *ret; |
4027 | register regnode *ptr; | |
fe14fcc3 | 4028 | |
830247a4 | 4029 | ret = RExC_emit; |
c277df42 | 4030 | if (SIZE_ONLY) { |
830247a4 IZ |
4031 | SIZE_ALIGN(RExC_size); |
4032 | RExC_size += 2; | |
a0d0e21e LW |
4033 | return(ret); |
4034 | } | |
fe14fcc3 | 4035 | |
c277df42 | 4036 | NODE_ALIGN_FILL(ret); |
a0d0e21e | 4037 | ptr = ret; |
c277df42 | 4038 | FILL_ADVANCE_NODE_ARG(ptr, op, arg); |
fac92740 MJD |
4039 | if (RExC_offsets) { /* MJD */ |
4040 | MJD_OFFSET_DEBUG((stderr, "%s: %s %u <- %u (max %u).\n", | |
4041 | "reganode", | |
4042 | RExC_emit - RExC_emit_start > RExC_offsets[0] ? | |
4043 | "Overwriting end of array!\n" : "OK", | |
4044 | RExC_emit - RExC_emit_start, | |
4045 | RExC_parse - RExC_start, | |
4046 | RExC_offsets[0])); | |
4047 | Set_Cur_Node_Offset; | |
4048 | } | |
4049 | ||
830247a4 | 4050 | RExC_emit = ptr; |
fe14fcc3 | 4051 | |
a0d0e21e | 4052 | return(ret); |
fe14fcc3 LW |
4053 | } |
4054 | ||
4055 | /* | |
cd439c50 | 4056 | - reguni - emit (if appropriate) a Unicode character |
a0ed51b3 LW |
4057 | */ |
4058 | STATIC void | |
830247a4 | 4059 | S_reguni(pTHX_ RExC_state_t *pRExC_state, UV uv, char* s, STRLEN* lenp) |
a0ed51b3 | 4060 | { |
5e12f4fb | 4061 | *lenp = SIZE_ONLY ? UNISKIP(uv) : (uvchr_to_utf8((U8*)s, uv) - (U8*)s); |
a0ed51b3 LW |
4062 | } |
4063 | ||
4064 | /* | |
a0d0e21e LW |
4065 | - reginsert - insert an operator in front of already-emitted operand |
4066 | * | |
4067 | * Means relocating the operand. | |
4068 | */ | |
76e3520e | 4069 | STATIC void |
830247a4 | 4070 | S_reginsert(pTHX_ RExC_state_t *pRExC_state, U8 op, regnode *opnd) |
a687059c | 4071 | { |
c277df42 IZ |
4072 | register regnode *src; |
4073 | register regnode *dst; | |
4074 | register regnode *place; | |
4075 | register int offset = regarglen[(U8)op]; | |
b81d288d | 4076 | |
22c35a8c | 4077 | /* (PL_regkind[(U8)op] == CURLY ? EXTRA_STEP_2ARGS : 0); */ |
c277df42 IZ |
4078 | |
4079 | if (SIZE_ONLY) { | |
830247a4 | 4080 | RExC_size += NODE_STEP_REGNODE + offset; |
a0d0e21e LW |
4081 | return; |
4082 | } | |
a687059c | 4083 | |
830247a4 IZ |
4084 | src = RExC_emit; |
4085 | RExC_emit += NODE_STEP_REGNODE + offset; | |
4086 | dst = RExC_emit; | |
fac92740 | 4087 | while (src > opnd) { |
c277df42 | 4088 | StructCopy(--src, --dst, regnode); |
fac92740 MJD |
4089 | if (RExC_offsets) { /* MJD 20010112 */ |
4090 | MJD_OFFSET_DEBUG((stderr, "%s: %s copy %u -> %u (max %u).\n", | |
4091 | "reg_insert", | |
4092 | dst - RExC_emit_start > RExC_offsets[0] | |
4093 | ? "Overwriting end of array!\n" : "OK", | |
4094 | src - RExC_emit_start, | |
4095 | dst - RExC_emit_start, | |
4096 | RExC_offsets[0])); | |
4097 | Set_Node_Offset_To_R(dst-RExC_emit_start, Node_Offset(src)); | |
4098 | Set_Node_Length_To_R(dst-RExC_emit_start, Node_Length(src)); | |
4099 | } | |
4100 | } | |
4101 | ||
a0d0e21e LW |
4102 | |
4103 | place = opnd; /* Op node, where operand used to be. */ | |
fac92740 MJD |
4104 | if (RExC_offsets) { /* MJD */ |
4105 | MJD_OFFSET_DEBUG((stderr, "%s: %s %u <- %u (max %u).\n", | |
4106 | "reginsert", | |
4107 | place - RExC_emit_start > RExC_offsets[0] | |
4108 | ? "Overwriting end of array!\n" : "OK", | |
4109 | place - RExC_emit_start, | |
4110 | RExC_parse - RExC_start, | |
4111 | RExC_offsets[0])); | |
4112 | Set_Node_Offset(place, RExC_parse); | |
4113 | } | |
c277df42 IZ |
4114 | src = NEXTOPER(place); |
4115 | FILL_ADVANCE_NODE(place, op); | |
4116 | Zero(src, offset, regnode); | |
a687059c LW |
4117 | } |
4118 | ||
4119 | /* | |
c277df42 | 4120 | - regtail - set the next-pointer at the end of a node chain of p to val. |
a0d0e21e | 4121 | */ |
76e3520e | 4122 | STATIC void |
830247a4 | 4123 | S_regtail(pTHX_ RExC_state_t *pRExC_state, regnode *p, regnode *val) |
a687059c | 4124 | { |
c277df42 IZ |
4125 | register regnode *scan; |
4126 | register regnode *temp; | |
a0d0e21e | 4127 | |
c277df42 | 4128 | if (SIZE_ONLY) |
a0d0e21e LW |
4129 | return; |
4130 | ||
4131 | /* Find last node. */ | |
4132 | scan = p; | |
4133 | for (;;) { | |
4134 | temp = regnext(scan); | |
4135 | if (temp == NULL) | |
4136 | break; | |
4137 | scan = temp; | |
4138 | } | |
a687059c | 4139 | |
c277df42 IZ |
4140 | if (reg_off_by_arg[OP(scan)]) { |
4141 | ARG_SET(scan, val - scan); | |
a0ed51b3 LW |
4142 | } |
4143 | else { | |
c277df42 IZ |
4144 | NEXT_OFF(scan) = val - scan; |
4145 | } | |
a687059c LW |
4146 | } |
4147 | ||
4148 | /* | |
a0d0e21e LW |
4149 | - regoptail - regtail on operand of first argument; nop if operandless |
4150 | */ | |
76e3520e | 4151 | STATIC void |
830247a4 | 4152 | S_regoptail(pTHX_ RExC_state_t *pRExC_state, regnode *p, regnode *val) |
a687059c | 4153 | { |
a0d0e21e | 4154 | /* "Operandless" and "op != BRANCH" are synonymous in practice. */ |
c277df42 IZ |
4155 | if (p == NULL || SIZE_ONLY) |
4156 | return; | |
22c35a8c | 4157 | if (PL_regkind[(U8)OP(p)] == BRANCH) { |
830247a4 | 4158 | regtail(pRExC_state, NEXTOPER(p), val); |
a0ed51b3 | 4159 | } |
22c35a8c | 4160 | else if ( PL_regkind[(U8)OP(p)] == BRANCHJ) { |
830247a4 | 4161 | regtail(pRExC_state, NEXTOPER(NEXTOPER(p)), val); |
a0ed51b3 LW |
4162 | } |
4163 | else | |
a0d0e21e | 4164 | return; |
a687059c LW |
4165 | } |
4166 | ||
4167 | /* | |
4168 | - regcurly - a little FSA that accepts {\d+,?\d*} | |
4169 | */ | |
79072805 | 4170 | STATIC I32 |
cea2e8a9 | 4171 | S_regcurly(pTHX_ register char *s) |
a687059c LW |
4172 | { |
4173 | if (*s++ != '{') | |
4174 | return FALSE; | |
f0fcb552 | 4175 | if (!isDIGIT(*s)) |
a687059c | 4176 | return FALSE; |
f0fcb552 | 4177 | while (isDIGIT(*s)) |
a687059c LW |
4178 | s++; |
4179 | if (*s == ',') | |
4180 | s++; | |
f0fcb552 | 4181 | while (isDIGIT(*s)) |
a687059c LW |
4182 | s++; |
4183 | if (*s != '}') | |
4184 | return FALSE; | |
4185 | return TRUE; | |
4186 | } | |
4187 | ||
a687059c | 4188 | |
8fa7f367 JH |
4189 | #ifdef DEBUGGING |
4190 | ||
76e3520e | 4191 | STATIC regnode * |
cea2e8a9 | 4192 | S_dumpuntil(pTHX_ regnode *start, regnode *node, regnode *last, SV* sv, I32 l) |
c277df42 | 4193 | { |
f248d071 | 4194 | register U8 op = EXACT; /* Arbitrary non-END op. */ |
155aba94 | 4195 | register regnode *next; |
c277df42 IZ |
4196 | |
4197 | while (op != END && (!last || node < last)) { | |
4198 | /* While that wasn't END last time... */ | |
4199 | ||
4200 | NODE_ALIGN(node); | |
4201 | op = OP(node); | |
4202 | if (op == CLOSE) | |
4203 | l--; | |
4204 | next = regnext(node); | |
4205 | /* Where, what. */ | |
4206 | if (OP(node) == OPTIMIZED) | |
4207 | goto after_print; | |
4208 | regprop(sv, node); | |
b900a521 | 4209 | PerlIO_printf(Perl_debug_log, "%4"IVdf":%*s%s", (IV)(node - start), |
f1dbda3d | 4210 | (int)(2*l + 1), "", SvPVX(sv)); |
c277df42 IZ |
4211 | if (next == NULL) /* Next ptr. */ |
4212 | PerlIO_printf(Perl_debug_log, "(0)"); | |
b81d288d | 4213 | else |
b900a521 | 4214 | PerlIO_printf(Perl_debug_log, "(%"IVdf")", (IV)(next - start)); |
c277df42 IZ |
4215 | (void)PerlIO_putc(Perl_debug_log, '\n'); |
4216 | after_print: | |
22c35a8c | 4217 | if (PL_regkind[(U8)op] == BRANCHJ) { |
b81d288d AB |
4218 | register regnode *nnode = (OP(next) == LONGJMP |
4219 | ? regnext(next) | |
c277df42 IZ |
4220 | : next); |
4221 | if (last && nnode > last) | |
4222 | nnode = last; | |
4223 | node = dumpuntil(start, NEXTOPER(NEXTOPER(node)), nnode, sv, l + 1); | |
a0ed51b3 | 4224 | } |
22c35a8c | 4225 | else if (PL_regkind[(U8)op] == BRANCH) { |
c277df42 | 4226 | node = dumpuntil(start, NEXTOPER(node), next, sv, l + 1); |
a0ed51b3 LW |
4227 | } |
4228 | else if ( op == CURLY) { /* `next' might be very big: optimizer */ | |
c277df42 IZ |
4229 | node = dumpuntil(start, NEXTOPER(node) + EXTRA_STEP_2ARGS, |
4230 | NEXTOPER(node) + EXTRA_STEP_2ARGS + 1, sv, l + 1); | |
a0ed51b3 | 4231 | } |
22c35a8c | 4232 | else if (PL_regkind[(U8)op] == CURLY && op != CURLYX) { |
c277df42 IZ |
4233 | node = dumpuntil(start, NEXTOPER(node) + EXTRA_STEP_2ARGS, |
4234 | next, sv, l + 1); | |
a0ed51b3 LW |
4235 | } |
4236 | else if ( op == PLUS || op == STAR) { | |
c277df42 | 4237 | node = dumpuntil(start, NEXTOPER(node), NEXTOPER(node) + 1, sv, l + 1); |
a0ed51b3 LW |
4238 | } |
4239 | else if (op == ANYOF) { | |
4f66b38d HS |
4240 | /* arglen 1 + class block */ |
4241 | node += 1 + ((ANYOF_FLAGS(node) & ANYOF_LARGE) | |
4242 | ? ANYOF_CLASS_SKIP : ANYOF_SKIP); | |
4243 | node = NEXTOPER(node); | |
a0ed51b3 | 4244 | } |
22c35a8c | 4245 | else if (PL_regkind[(U8)op] == EXACT) { |
c277df42 | 4246 | /* Literal string, where present. */ |
cd439c50 | 4247 | node += NODE_SZ_STR(node) - 1; |
c277df42 | 4248 | node = NEXTOPER(node); |
a0ed51b3 LW |
4249 | } |
4250 | else { | |
c277df42 IZ |
4251 | node = NEXTOPER(node); |
4252 | node += regarglen[(U8)op]; | |
4253 | } | |
4254 | if (op == CURLYX || op == OPEN) | |
4255 | l++; | |
4256 | else if (op == WHILEM) | |
4257 | l--; | |
4258 | } | |
4259 | return node; | |
4260 | } | |
4261 | ||
8fa7f367 JH |
4262 | #endif /* DEBUGGING */ |
4263 | ||
a687059c | 4264 | /* |
fd181c75 | 4265 | - regdump - dump a regexp onto Perl_debug_log in vaguely comprehensible form |
a687059c LW |
4266 | */ |
4267 | void | |
864dbfa3 | 4268 | Perl_regdump(pTHX_ regexp *r) |
a687059c | 4269 | { |
35ff7856 | 4270 | #ifdef DEBUGGING |
46fc3d4c | 4271 | SV *sv = sv_newmortal(); |
a687059c | 4272 | |
c277df42 | 4273 | (void)dumpuntil(r->program, r->program + 1, NULL, sv, 0); |
a0d0e21e LW |
4274 | |
4275 | /* Header fields of interest. */ | |
c277df42 | 4276 | if (r->anchored_substr) |
7b0972df | 4277 | PerlIO_printf(Perl_debug_log, |
b81d288d | 4278 | "anchored `%s%.*s%s'%s at %"IVdf" ", |
3280af22 | 4279 | PL_colors[0], |
7b0972df | 4280 | (int)(SvCUR(r->anchored_substr) - (SvTAIL(r->anchored_substr)!=0)), |
b81d288d | 4281 | SvPVX(r->anchored_substr), |
3280af22 | 4282 | PL_colors[1], |
c277df42 | 4283 | SvTAIL(r->anchored_substr) ? "$" : "", |
7b0972df | 4284 | (IV)r->anchored_offset); |
c277df42 | 4285 | if (r->float_substr) |
7b0972df | 4286 | PerlIO_printf(Perl_debug_log, |
b81d288d | 4287 | "floating `%s%.*s%s'%s at %"IVdf"..%"UVuf" ", |
3280af22 | 4288 | PL_colors[0], |
b81d288d | 4289 | (int)(SvCUR(r->float_substr) - (SvTAIL(r->float_substr)!=0)), |
2c2d71f5 | 4290 | SvPVX(r->float_substr), |
3280af22 | 4291 | PL_colors[1], |
c277df42 | 4292 | SvTAIL(r->float_substr) ? "$" : "", |
7b0972df | 4293 | (IV)r->float_min_offset, (UV)r->float_max_offset); |
c277df42 | 4294 | if (r->check_substr) |
b81d288d AB |
4295 | PerlIO_printf(Perl_debug_log, |
4296 | r->check_substr == r->float_substr | |
c277df42 IZ |
4297 | ? "(checking floating" : "(checking anchored"); |
4298 | if (r->reganch & ROPT_NOSCAN) | |
4299 | PerlIO_printf(Perl_debug_log, " noscan"); | |
4300 | if (r->reganch & ROPT_CHECK_ALL) | |
4301 | PerlIO_printf(Perl_debug_log, " isall"); | |
4302 | if (r->check_substr) | |
4303 | PerlIO_printf(Perl_debug_log, ") "); | |
4304 | ||
46fc3d4c | 4305 | if (r->regstclass) { |
4306 | regprop(sv, r->regstclass); | |
4307 | PerlIO_printf(Perl_debug_log, "stclass `%s' ", SvPVX(sv)); | |
4308 | } | |
774d564b | 4309 | if (r->reganch & ROPT_ANCH) { |
4310 | PerlIO_printf(Perl_debug_log, "anchored"); | |
4311 | if (r->reganch & ROPT_ANCH_BOL) | |
4312 | PerlIO_printf(Perl_debug_log, "(BOL)"); | |
c277df42 IZ |
4313 | if (r->reganch & ROPT_ANCH_MBOL) |
4314 | PerlIO_printf(Perl_debug_log, "(MBOL)"); | |
cad2e5aa JH |
4315 | if (r->reganch & ROPT_ANCH_SBOL) |
4316 | PerlIO_printf(Perl_debug_log, "(SBOL)"); | |
774d564b | 4317 | if (r->reganch & ROPT_ANCH_GPOS) |
4318 | PerlIO_printf(Perl_debug_log, "(GPOS)"); | |
4319 | PerlIO_putc(Perl_debug_log, ' '); | |
4320 | } | |
c277df42 IZ |
4321 | if (r->reganch & ROPT_GPOS_SEEN) |
4322 | PerlIO_printf(Perl_debug_log, "GPOS "); | |
a0d0e21e | 4323 | if (r->reganch & ROPT_SKIP) |
760ac839 | 4324 | PerlIO_printf(Perl_debug_log, "plus "); |
a0d0e21e | 4325 | if (r->reganch & ROPT_IMPLICIT) |
760ac839 | 4326 | PerlIO_printf(Perl_debug_log, "implicit "); |
760ac839 | 4327 | PerlIO_printf(Perl_debug_log, "minlen %ld ", (long) r->minlen); |
ce862d02 IZ |
4328 | if (r->reganch & ROPT_EVAL_SEEN) |
4329 | PerlIO_printf(Perl_debug_log, "with eval "); | |
760ac839 | 4330 | PerlIO_printf(Perl_debug_log, "\n"); |
fac92740 MJD |
4331 | if (r->offsets) { |
4332 | U32 i; | |
4333 | U32 len = r->offsets[0]; | |
392fbf5d | 4334 | PerlIO_printf(Perl_debug_log, "Offsets: [%"UVuf"]\n\t", (UV)r->offsets[0]); |
fac92740 | 4335 | for (i = 1; i <= len; i++) |
392fbf5d RB |
4336 | PerlIO_printf(Perl_debug_log, "%"UVuf"[%"UVuf"] ", |
4337 | (UV)r->offsets[i*2-1], | |
4338 | (UV)r->offsets[i*2]); | |
fac92740 MJD |
4339 | PerlIO_printf(Perl_debug_log, "\n"); |
4340 | } | |
17c3b450 | 4341 | #endif /* DEBUGGING */ |
a687059c LW |
4342 | } |
4343 | ||
8fa7f367 JH |
4344 | #ifdef DEBUGGING |
4345 | ||
653099ff GS |
4346 | STATIC void |
4347 | S_put_byte(pTHX_ SV *sv, int c) | |
4348 | { | |
ffc61ed2 | 4349 | if (isCNTRL(c) || c == 127 || c == 255 || !isPRINT(c)) |
653099ff GS |
4350 | Perl_sv_catpvf(aTHX_ sv, "\\%o", c); |
4351 | else if (c == '-' || c == ']' || c == '\\' || c == '^') | |
4352 | Perl_sv_catpvf(aTHX_ sv, "\\%c", c); | |
4353 | else | |
4354 | Perl_sv_catpvf(aTHX_ sv, "%c", c); | |
4355 | } | |
4356 | ||
8fa7f367 JH |
4357 | #endif /* DEBUGGING */ |
4358 | ||
a687059c | 4359 | /* |
a0d0e21e LW |
4360 | - regprop - printable representation of opcode |
4361 | */ | |
46fc3d4c | 4362 | void |
864dbfa3 | 4363 | Perl_regprop(pTHX_ SV *sv, regnode *o) |
a687059c | 4364 | { |
35ff7856 | 4365 | #ifdef DEBUGGING |
9b155405 | 4366 | register int k; |
a0d0e21e | 4367 | |
54dc92de | 4368 | sv_setpvn(sv, "", 0); |
9b155405 | 4369 | if (OP(o) >= reg_num) /* regnode.type is unsigned */ |
830247a4 IZ |
4370 | /* It would be nice to FAIL() here, but this may be called from |
4371 | regexec.c, and it would be hard to supply pRExC_state. */ | |
4372 | Perl_croak(aTHX_ "Corrupted regexp opcode"); | |
9b155405 IZ |
4373 | sv_catpv(sv, (char*)reg_name[OP(o)]); /* Take off const! */ |
4374 | ||
4375 | k = PL_regkind[(U8)OP(o)]; | |
4376 | ||
4377 | if (k == EXACT) | |
7821416a | 4378 | Perl_sv_catpvf(aTHX_ sv, " <%s%.*s%s>", PL_colors[0], |
cd439c50 | 4379 | STR_LEN(o), STRING(o), PL_colors[1]); |
9b155405 | 4380 | else if (k == CURLY) { |
cb434fcc | 4381 | if (OP(o) == CURLYM || OP(o) == CURLYN || OP(o) == CURLYX) |
cea2e8a9 GS |
4382 | Perl_sv_catpvf(aTHX_ sv, "[%d]", o->flags); /* Parenth number */ |
4383 | Perl_sv_catpvf(aTHX_ sv, " {%d,%d}", ARG1(o), ARG2(o)); | |
a0d0e21e | 4384 | } |
2c2d71f5 JH |
4385 | else if (k == WHILEM && o->flags) /* Ordinal/of */ |
4386 | Perl_sv_catpvf(aTHX_ sv, "[%d/%d]", o->flags & 0xf, o->flags>>4); | |
9b155405 | 4387 | else if (k == REF || k == OPEN || k == CLOSE || k == GROUPP ) |
894356b3 | 4388 | Perl_sv_catpvf(aTHX_ sv, "%d", (int)ARG(o)); /* Parenth number */ |
9b155405 | 4389 | else if (k == LOGICAL) |
04ebc1ab | 4390 | Perl_sv_catpvf(aTHX_ sv, "[%d]", o->flags); /* 2: embedded, otherwise 1 */ |
653099ff GS |
4391 | else if (k == ANYOF) { |
4392 | int i, rangestart = -1; | |
ffc61ed2 | 4393 | U8 flags = ANYOF_FLAGS(o); |
19860706 JH |
4394 | const char * const anyofs[] = { /* Should be syncronized with |
4395 | * ANYOF_ #xdefines in regcomp.h */ | |
653099ff GS |
4396 | "\\w", |
4397 | "\\W", | |
4398 | "\\s", | |
4399 | "\\S", | |
4400 | "\\d", | |
4401 | "\\D", | |
4402 | "[:alnum:]", | |
4403 | "[:^alnum:]", | |
4404 | "[:alpha:]", | |
4405 | "[:^alpha:]", | |
4406 | "[:ascii:]", | |
4407 | "[:^ascii:]", | |
4408 | "[:ctrl:]", | |
4409 | "[:^ctrl:]", | |
4410 | "[:graph:]", | |
4411 | "[:^graph:]", | |
4412 | "[:lower:]", | |
4413 | "[:^lower:]", | |
4414 | "[:print:]", | |
4415 | "[:^print:]", | |
4416 | "[:punct:]", | |
4417 | "[:^punct:]", | |
4418 | "[:upper:]", | |
aaa51d5e | 4419 | "[:^upper:]", |
653099ff | 4420 | "[:xdigit:]", |
aaa51d5e JF |
4421 | "[:^xdigit:]", |
4422 | "[:space:]", | |
4423 | "[:^space:]", | |
4424 | "[:blank:]", | |
4425 | "[:^blank:]" | |
653099ff GS |
4426 | }; |
4427 | ||
19860706 | 4428 | if (flags & ANYOF_LOCALE) |
653099ff | 4429 | sv_catpv(sv, "{loc}"); |
19860706 | 4430 | if (flags & ANYOF_FOLD) |
653099ff GS |
4431 | sv_catpv(sv, "{i}"); |
4432 | Perl_sv_catpvf(aTHX_ sv, "[%s", PL_colors[0]); | |
19860706 | 4433 | if (flags & ANYOF_INVERT) |
653099ff | 4434 | sv_catpv(sv, "^"); |
ffc61ed2 JH |
4435 | for (i = 0; i <= 256; i++) { |
4436 | if (i < 256 && ANYOF_BITMAP_TEST(o,i)) { | |
4437 | if (rangestart == -1) | |
4438 | rangestart = i; | |
4439 | } else if (rangestart != -1) { | |
4440 | if (i <= rangestart + 3) | |
4441 | for (; rangestart < i; rangestart++) | |
653099ff | 4442 | put_byte(sv, rangestart); |
ffc61ed2 JH |
4443 | else { |
4444 | put_byte(sv, rangestart); | |
4445 | sv_catpv(sv, "-"); | |
4446 | put_byte(sv, i - 1); | |
653099ff | 4447 | } |
ffc61ed2 | 4448 | rangestart = -1; |
653099ff | 4449 | } |
847a199f | 4450 | } |
ffc61ed2 JH |
4451 | |
4452 | if (o->flags & ANYOF_CLASS) | |
4453 | for (i = 0; i < sizeof(anyofs)/sizeof(char*); i++) | |
4454 | if (ANYOF_CLASS_TEST(o,i)) | |
4455 | sv_catpv(sv, anyofs[i]); | |
4456 | ||
4457 | if (flags & ANYOF_UNICODE) | |
4458 | sv_catpv(sv, "{unicode}"); | |
1aa99e6b IH |
4459 | else if (flags & ANYOF_UNICODE_ALL) |
4460 | sv_catpv(sv, "{all-unicode}"); | |
ffc61ed2 JH |
4461 | |
4462 | { | |
4463 | SV *lv; | |
4464 | SV *sw = regclass_swash(o, FALSE, &lv); | |
b81d288d | 4465 | |
ffc61ed2 JH |
4466 | if (lv) { |
4467 | if (sw) { | |
4468 | UV i; | |
4469 | U8 s[UTF8_MAXLEN+1]; | |
b81d288d | 4470 | |
ffc61ed2 | 4471 | for (i = 0; i <= 256; i++) { /* just the first 256 */ |
2b9d42f0 | 4472 | U8 *e = uvchr_to_utf8(s, i); |
ffc61ed2 | 4473 | |
3568d838 | 4474 | if (i < 256 && swash_fetch(sw, s, TRUE)) { |
ffc61ed2 JH |
4475 | if (rangestart == -1) |
4476 | rangestart = i; | |
4477 | } else if (rangestart != -1) { | |
4478 | U8 *p; | |
b81d288d | 4479 | |
ffc61ed2 JH |
4480 | if (i <= rangestart + 3) |
4481 | for (; rangestart < i; rangestart++) { | |
2b9d42f0 | 4482 | for(e = uvchr_to_utf8(s, rangestart), p = s; p < e; p++) |
ffc61ed2 JH |
4483 | put_byte(sv, *p); |
4484 | } | |
4485 | else { | |
2b9d42f0 | 4486 | for (e = uvchr_to_utf8(s, rangestart), p = s; p < e; p++) |
ffc61ed2 JH |
4487 | put_byte(sv, *p); |
4488 | sv_catpv(sv, "-"); | |
2b9d42f0 | 4489 | for (e = uvchr_to_utf8(s, i - 1), p = s; p < e; p++) |
ffc61ed2 JH |
4490 | put_byte(sv, *p); |
4491 | } | |
4492 | rangestart = -1; | |
4493 | } | |
19860706 | 4494 | } |
ffc61ed2 JH |
4495 | |
4496 | sv_catpv(sv, "..."); /* et cetera */ | |
19860706 | 4497 | } |
fde631ed | 4498 | |
ffc61ed2 JH |
4499 | { |
4500 | char *s = savepv(SvPVX(lv)); | |
4501 | char *origs = s; | |
b81d288d | 4502 | |
ffc61ed2 | 4503 | while(*s && *s != '\n') s++; |
b81d288d | 4504 | |
ffc61ed2 JH |
4505 | if (*s == '\n') { |
4506 | char *t = ++s; | |
4507 | ||
4508 | while (*s) { | |
4509 | if (*s == '\n') | |
4510 | *s = ' '; | |
4511 | s++; | |
4512 | } | |
4513 | if (s[-1] == ' ') | |
4514 | s[-1] = 0; | |
4515 | ||
4516 | sv_catpv(sv, t); | |
fde631ed | 4517 | } |
b81d288d | 4518 | |
ffc61ed2 | 4519 | Safefree(origs); |
fde631ed JH |
4520 | } |
4521 | } | |
653099ff | 4522 | } |
ffc61ed2 | 4523 | |
653099ff GS |
4524 | Perl_sv_catpvf(aTHX_ sv, "%s]", PL_colors[1]); |
4525 | } | |
9b155405 | 4526 | else if (k == BRANCHJ && (OP(o) == UNLESSM || OP(o) == IFMATCH)) |
cea2e8a9 | 4527 | Perl_sv_catpvf(aTHX_ sv, "[-%d]", o->flags); |
17c3b450 | 4528 | #endif /* DEBUGGING */ |
35ff7856 | 4529 | } |
a687059c | 4530 | |
cad2e5aa JH |
4531 | SV * |
4532 | Perl_re_intuit_string(pTHX_ regexp *prog) | |
4533 | { /* Assume that RE_INTUIT is set */ | |
4534 | DEBUG_r( | |
4535 | { STRLEN n_a; | |
4536 | char *s = SvPV(prog->check_substr,n_a); | |
4537 | ||
4538 | if (!PL_colorset) reginitcolors(); | |
4539 | PerlIO_printf(Perl_debug_log, | |
4540 | "%sUsing REx substr:%s `%s%.60s%s%s'\n", | |
4541 | PL_colors[4],PL_colors[5],PL_colors[0], | |
4542 | s, | |
4543 | PL_colors[1], | |
4544 | (strlen(s) > 60 ? "..." : "")); | |
4545 | } ); | |
4546 | ||
4547 | return prog->check_substr; | |
4548 | } | |
4549 | ||
2b69d0c2 | 4550 | void |
864dbfa3 | 4551 | Perl_pregfree(pTHX_ struct regexp *r) |
a687059c | 4552 | { |
adac82c7 | 4553 | DEBUG_r(if (!PL_colorset) reginitcolors()); |
7821416a IZ |
4554 | |
4555 | if (!r || (--r->refcnt > 0)) | |
4556 | return; | |
cad2e5aa JH |
4557 | DEBUG_r(PerlIO_printf(Perl_debug_log, |
4558 | "%sFreeing REx:%s `%s%.60s%s%s'\n", | |
4559 | PL_colors[4],PL_colors[5],PL_colors[0], | |
4560 | r->precomp, | |
4561 | PL_colors[1], | |
4562 | (strlen(r->precomp) > 60 ? "..." : ""))); | |
4563 | ||
c277df42 | 4564 | if (r->precomp) |
a0d0e21e | 4565 | Safefree(r->precomp); |
fac92740 MJD |
4566 | if (r->offsets) /* 20010421 MJD */ |
4567 | Safefree(r->offsets); | |
cf93c79d IZ |
4568 | if (RX_MATCH_COPIED(r)) |
4569 | Safefree(r->subbeg); | |
a193d654 GS |
4570 | if (r->substrs) { |
4571 | if (r->anchored_substr) | |
4572 | SvREFCNT_dec(r->anchored_substr); | |
4573 | if (r->float_substr) | |
4574 | SvREFCNT_dec(r->float_substr); | |
2779dcf1 | 4575 | Safefree(r->substrs); |
a193d654 | 4576 | } |
c277df42 IZ |
4577 | if (r->data) { |
4578 | int n = r->data->count; | |
dfad63ad HS |
4579 | AV* new_comppad = NULL; |
4580 | AV* old_comppad; | |
4581 | SV** old_curpad; | |
4582 | ||
c277df42 IZ |
4583 | while (--n >= 0) { |
4584 | switch (r->data->what[n]) { | |
4585 | case 's': | |
4586 | SvREFCNT_dec((SV*)r->data->data[n]); | |
4587 | break; | |
653099ff GS |
4588 | case 'f': |
4589 | Safefree(r->data->data[n]); | |
4590 | break; | |
dfad63ad HS |
4591 | case 'p': |
4592 | new_comppad = (AV*)r->data->data[n]; | |
4593 | break; | |
c277df42 | 4594 | case 'o': |
dfad63ad | 4595 | if (new_comppad == NULL) |
cea2e8a9 | 4596 | Perl_croak(aTHX_ "panic: pregfree comppad"); |
dfad63ad HS |
4597 | old_comppad = PL_comppad; |
4598 | old_curpad = PL_curpad; | |
1e6dc0b6 SB |
4599 | /* Watch out for global destruction's random ordering. */ |
4600 | if (SvTYPE(new_comppad) == SVt_PVAV) { | |
4601 | PL_comppad = new_comppad; | |
4602 | PL_curpad = AvARRAY(new_comppad); | |
4603 | } | |
4604 | else | |
4605 | PL_curpad = NULL; | |
c277df42 | 4606 | op_free((OP_4tree*)r->data->data[n]); |
dfad63ad HS |
4607 | PL_comppad = old_comppad; |
4608 | PL_curpad = old_curpad; | |
4609 | SvREFCNT_dec((SV*)new_comppad); | |
4610 | new_comppad = NULL; | |
c277df42 IZ |
4611 | break; |
4612 | case 'n': | |
4613 | break; | |
4614 | default: | |
830247a4 | 4615 | Perl_croak(aTHX_ "panic: regfree data code '%c'", r->data->what[n]); |
c277df42 IZ |
4616 | } |
4617 | } | |
4618 | Safefree(r->data->what); | |
4619 | Safefree(r->data); | |
a0d0e21e LW |
4620 | } |
4621 | Safefree(r->startp); | |
4622 | Safefree(r->endp); | |
4623 | Safefree(r); | |
a687059c | 4624 | } |
c277df42 IZ |
4625 | |
4626 | /* | |
4627 | - regnext - dig the "next" pointer out of a node | |
4628 | * | |
4629 | * [Note, when REGALIGN is defined there are two places in regmatch() | |
4630 | * that bypass this code for speed.] | |
4631 | */ | |
4632 | regnode * | |
864dbfa3 | 4633 | Perl_regnext(pTHX_ register regnode *p) |
c277df42 IZ |
4634 | { |
4635 | register I32 offset; | |
4636 | ||
3280af22 | 4637 | if (p == &PL_regdummy) |
c277df42 IZ |
4638 | return(NULL); |
4639 | ||
4640 | offset = (reg_off_by_arg[OP(p)] ? ARG(p) : NEXT_OFF(p)); | |
4641 | if (offset == 0) | |
4642 | return(NULL); | |
4643 | ||
c277df42 | 4644 | return(p+offset); |
c277df42 IZ |
4645 | } |
4646 | ||
01f988be | 4647 | STATIC void |
cea2e8a9 | 4648 | S_re_croak2(pTHX_ const char* pat1,const char* pat2,...) |
c277df42 IZ |
4649 | { |
4650 | va_list args; | |
4651 | STRLEN l1 = strlen(pat1); | |
4652 | STRLEN l2 = strlen(pat2); | |
4653 | char buf[512]; | |
06bf62c7 | 4654 | SV *msv; |
c277df42 IZ |
4655 | char *message; |
4656 | ||
4657 | if (l1 > 510) | |
4658 | l1 = 510; | |
4659 | if (l1 + l2 > 510) | |
4660 | l2 = 510 - l1; | |
4661 | Copy(pat1, buf, l1 , char); | |
4662 | Copy(pat2, buf + l1, l2 , char); | |
3b818b81 GS |
4663 | buf[l1 + l2] = '\n'; |
4664 | buf[l1 + l2 + 1] = '\0'; | |
8736538c AS |
4665 | #ifdef I_STDARG |
4666 | /* ANSI variant takes additional second argument */ | |
c277df42 | 4667 | va_start(args, pat2); |
8736538c AS |
4668 | #else |
4669 | va_start(args); | |
4670 | #endif | |
5a844595 | 4671 | msv = vmess(buf, &args); |
c277df42 | 4672 | va_end(args); |
06bf62c7 | 4673 | message = SvPV(msv,l1); |
c277df42 IZ |
4674 | if (l1 > 512) |
4675 | l1 = 512; | |
4676 | Copy(message, buf, l1 , char); | |
4677 | buf[l1] = '\0'; /* Overwrite \n */ | |
cea2e8a9 | 4678 | Perl_croak(aTHX_ "%s", buf); |
c277df42 | 4679 | } |
a0ed51b3 LW |
4680 | |
4681 | /* XXX Here's a total kludge. But we need to re-enter for swash routines. */ | |
4682 | ||
4683 | void | |
864dbfa3 | 4684 | Perl_save_re_context(pTHX) |
b81d288d | 4685 | { |
830247a4 IZ |
4686 | #if 0 |
4687 | SAVEPPTR(RExC_precomp); /* uncompiled string. */ | |
4688 | SAVEI32(RExC_npar); /* () count. */ | |
4689 | SAVEI32(RExC_size); /* Code size. */ | |
4690 | SAVEI16(RExC_flags16); /* are we folding, multilining? */ | |
4691 | SAVEVPTR(RExC_rx); /* from regcomp.c */ | |
4692 | SAVEI32(RExC_seen); /* from regcomp.c */ | |
4693 | SAVEI32(RExC_sawback); /* Did we see \1, ...? */ | |
4694 | SAVEI32(RExC_naughty); /* How bad is this pattern? */ | |
4695 | SAVEVPTR(RExC_emit); /* Code-emit pointer; ®dummy = don't */ | |
4696 | SAVEPPTR(RExC_end); /* End of input for compile */ | |
4697 | SAVEPPTR(RExC_parse); /* Input-scan pointer. */ | |
4698 | #endif | |
4699 | ||
4700 | SAVEI32(PL_reg_flags); /* from regexec.c */ | |
a0ed51b3 | 4701 | SAVEPPTR(PL_bostr); |
a0ed51b3 LW |
4702 | SAVEPPTR(PL_reginput); /* String-input pointer. */ |
4703 | SAVEPPTR(PL_regbol); /* Beginning of input, for ^ check. */ | |
4704 | SAVEPPTR(PL_regeol); /* End of input, for $ check. */ | |
7766f137 GS |
4705 | SAVEVPTR(PL_regstartp); /* Pointer to startp array. */ |
4706 | SAVEVPTR(PL_regendp); /* Ditto for endp. */ | |
4707 | SAVEVPTR(PL_reglastparen); /* Similarly for lastparen. */ | |
a0ed51b3 | 4708 | SAVEPPTR(PL_regtill); /* How far we are required to go. */ |
b81d288d | 4709 | SAVEGENERICPV(PL_reg_start_tmp); /* from regexec.c */ |
a0ed51b3 | 4710 | PL_reg_start_tmp = 0; |
a0ed51b3 LW |
4711 | SAVEI32(PL_reg_start_tmpl); /* from regexec.c */ |
4712 | PL_reg_start_tmpl = 0; | |
7766f137 | 4713 | SAVEVPTR(PL_regdata); |
a0ed51b3 LW |
4714 | SAVEI32(PL_reg_eval_set); /* from regexec.c */ |
4715 | SAVEI32(PL_regnarrate); /* from regexec.c */ | |
7766f137 | 4716 | SAVEVPTR(PL_regprogram); /* from regexec.c */ |
a0ed51b3 | 4717 | SAVEINT(PL_regindent); /* from regexec.c */ |
7766f137 GS |
4718 | SAVEVPTR(PL_regcc); /* from regexec.c */ |
4719 | SAVEVPTR(PL_curcop); | |
7766f137 GS |
4720 | SAVEVPTR(PL_reg_call_cc); /* from regexec.c */ |
4721 | SAVEVPTR(PL_reg_re); /* from regexec.c */ | |
54b6e2fa IZ |
4722 | SAVEPPTR(PL_reg_ganch); /* from regexec.c */ |
4723 | SAVESPTR(PL_reg_sv); /* from regexec.c */ | |
7766f137 | 4724 | SAVEVPTR(PL_reg_magic); /* from regexec.c */ |
54b6e2fa | 4725 | SAVEI32(PL_reg_oldpos); /* from regexec.c */ |
7766f137 GS |
4726 | SAVEVPTR(PL_reg_oldcurpm); /* from regexec.c */ |
4727 | SAVEVPTR(PL_reg_curpm); /* from regexec.c */ | |
5fb7366e | 4728 | SAVEI32(PL_regnpar); /* () count. */ |
e49a9654 | 4729 | SAVEI32(PL_regsize); /* from regexec.c */ |
54b6e2fa | 4730 | #ifdef DEBUGGING |
b81d288d | 4731 | SAVEPPTR(PL_reg_starttry); /* from regexec.c */ |
54b6e2fa | 4732 | #endif |
a0ed51b3 | 4733 | } |
51371543 GS |
4734 | |
4735 | #ifdef PERL_OBJECT | |
51371543 GS |
4736 | #include "XSUB.h" |
4737 | #undef this | |
4738 | #define this pPerl | |
4739 | #endif | |
4740 | ||
4741 | static void | |
4742 | clear_re(pTHXo_ void *r) | |
4743 | { | |
4744 | ReREFCNT_dec((regexp *)r); | |
4745 | } | |
ffbc6a93 | 4746 |