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a0d0e21e | 1 | /* regexp.h |
d6376244 | 2 | * |
4bb101f2 JH |
3 | * Copyright (C) 1993, 1994, 1996, 1997, 1999, 2000, 2001, 2003, |
4 | * by Larry Wall and others | |
d6376244 JH |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
378cc40b LW |
11 | /* |
12 | * Definitions etc. for regexp(3) routines. | |
13 | * | |
14 | * Caveat: this is V8 regexp(3) [actually, a reimplementation thereof], | |
15 | * not the System V one. | |
16 | */ | |
be8e71aa YO |
17 | #ifndef PLUGGABLE_RE_EXTENSION |
18 | /* we don't want to include this stuff if we are inside Nicholas' | |
19 | * pluggable regex engine code */ | |
378cc40b | 20 | |
c277df42 IZ |
21 | struct regnode { |
22 | U8 flags; | |
23 | U8 type; | |
24 | U16 next_off; | |
25 | }; | |
26 | ||
27 | typedef struct regnode regnode; | |
28 | ||
cad2e5aa | 29 | struct reg_substr_data; |
2779dcf1 | 30 | |
0ee3c8d0 JH |
31 | struct reg_data; |
32 | ||
f9f4320a | 33 | struct regexp_engine; |
bbe252da | 34 | |
c74340f9 YO |
35 | typedef struct regexp_paren_ofs { |
36 | I32 *startp; | |
37 | I32 *endp; | |
38 | } regexp_paren_ofs; | |
f9f4320a | 39 | |
f8c7b90f | 40 | #ifdef PERL_OLD_COPY_ON_WRITE |
bbe252da YO |
41 | #define SV_SAVED_COPY SV *saved_copy; /* If non-NULL, SV which is COW from original */ |
42 | #else | |
43 | #define SV_SAVED_COPY | |
ed252734 | 44 | #endif |
bbe252da YO |
45 | |
46 | typedef struct regexp { | |
47 | /* Generic details */ | |
48 | const struct regexp_engine* engine; /* what created this regexp? */ | |
49 | I32 refcnt; /* Refcount of this regexp */ | |
50 | ||
51 | /* The original string as passed to the compilation routine */ | |
52 | char *precomp; /* pre-compilation regular expression */ | |
53 | I32 prelen; /* length of precomp */ | |
54 | ||
55 | /* Used for generic optimisations by the perl core. | |
56 | All engines are expected to provide this information. */ | |
57 | U32 extflags; /* Flags used both externally and internally */ | |
de8c5301 YO |
58 | I32 minlen; /* mininum possible length of string to match */ |
59 | I32 minlenret; /* mininum possible length of $& */ | |
58e23c8d | 60 | U32 gofs; /* chars left of pos that we search from */ |
bbe252da YO |
61 | U32 nparens; /* number of capture buffers */ |
62 | HV *paren_names; /* Optional hash of paren names */ | |
63 | struct reg_substr_data *substrs; /* substring data about strings that must appear | |
64 | in the final match, used for optimisations */ | |
65 | ||
66 | /* Data about the last/current match. Used by the core and therefore | |
67 | must be populated by all engines. */ | |
68 | char *subbeg; /* saved or original string | |
69 | so \digit works forever. */ | |
70 | I32 sublen; /* Length of string pointed by subbeg */ | |
71 | I32 *startp; /* Array of offsets from start of string (@-) */ | |
72 | I32 *endp; /* Array of offsets from start of string (@+) */ | |
73 | ||
74 | SV_SAVED_COPY /* If non-NULL, SV which is COW from original */ | |
75 | U32 lastparen; /* last open paren matched */ | |
76 | U32 lastcloseparen; /* last close paren matched */ | |
77 | ||
78 | /* Perl Regex Engine specific data. Other engines shouldn't need | |
79 | to touch this. Should be refactored out into a different structure | |
80 | and accessed via the *pprivate field. (except intflags) */ | |
81 | U32 intflags; /* Internal flags */ | |
82 | void *pprivate; /* Data private to the regex engine which | |
83 | created this object. Perl will never mess with | |
84 | this member at all. */ | |
f8fc2ecf YO |
85 | } regexp; |
86 | ||
87 | ||
88 | typedef struct regexp_internal { | |
bbe252da YO |
89 | regexp_paren_ofs *swap; /* Swap copy of *startp / *endp */ |
90 | U32 *offsets; /* offset annotations 20001228 MJD | |
91 | data about mapping the program to the | |
92 | string*/ | |
93 | regnode *regstclass; /* Optional startclass as identified or constructed | |
94 | by the optimiser */ | |
95 | struct reg_data *data; /* Additional miscellaneous data used by the program. | |
96 | Used to make it easier to clone and free arbitrary | |
97 | data that the regops need. Often the ARG field of | |
98 | a regop is an index into this structure */ | |
c277df42 | 99 | regnode program[1]; /* Unwarranted chumminess with compiler. */ |
f8fc2ecf | 100 | } regexp_internal; |
378cc40b | 101 | |
f8fc2ecf YO |
102 | #define RXi_SET(x,y) (x)->pprivate = (void*)(y) |
103 | #define RXi_GET(x) ((regexp_internal *)((x)->pprivate)) | |
104 | #define RXi_GET_DECL(r,ri) regexp_internal *ri = RXi_GET(r) | |
f9f4320a YO |
105 | |
106 | typedef struct re_scream_pos_data_s | |
107 | { | |
108 | char **scream_olds; /* match pos */ | |
109 | I32 *scream_pos; /* Internal iterator of scream. */ | |
110 | } re_scream_pos_data; | |
111 | ||
112 | typedef struct regexp_engine { | |
f2f78491 YO |
113 | regexp* (*comp) (pTHX_ char* exp, char* xend, PMOP* pm); |
114 | I32 (*exec) (pTHX_ regexp* prog, char* stringarg, char* strend, | |
f9f4320a YO |
115 | char* strbeg, I32 minend, SV* screamer, |
116 | void* data, U32 flags); | |
f2f78491 YO |
117 | char* (*intuit) (pTHX_ regexp *prog, SV *sv, char *strpos, |
118 | char *strend, U32 flags, | |
119 | struct re_scream_pos_data_s *data); | |
120 | SV* (*checkstr) (pTHX_ regexp *prog); | |
121 | void (*free) (pTHX_ struct regexp* r); | |
de8c5301 | 122 | char* (*as_str) (pTHX_ MAGIC *mg, STRLEN *lp, U32 *flags, I32 *haseval); |
f2f78491 YO |
123 | #ifdef USE_ITHREADS |
124 | regexp* (*dupe) (pTHX_ const regexp *r, CLONE_PARAMS *param); | |
f9f4320a YO |
125 | #endif |
126 | } regexp_engine; | |
127 | ||
bbe252da YO |
128 | /* |
129 | * Flags stored in regexp->intflags | |
130 | * These are used only internally to the regexp engine | |
131 | */ | |
132 | #define PREGf_SKIP 0x00000001 | |
133 | #define PREGf_IMPLICIT 0x00000002 /* Converted .* to ^.* */ | |
134 | #define PREGf_NAUGHTY 0x00000004 /* how exponential is this pattern? */ | |
135 | #define PREGf_VERBARG_SEEN 0x00000008 | |
136 | #define PREGf_CUTGROUP_SEEN 0x00000010 | |
137 | ||
138 | ||
139 | /* Flags stored in regexp->extflags | |
140 | * These are used by code external to the regexp engine | |
141 | */ | |
142 | ||
143 | /* Anchor and GPOS related stuff */ | |
144 | #define RXf_ANCH_BOL 0x00000001 | |
145 | #define RXf_ANCH_MBOL 0x00000002 | |
146 | #define RXf_ANCH_SBOL 0x00000004 | |
147 | #define RXf_ANCH_GPOS 0x00000008 | |
148 | #define RXf_GPOS_SEEN 0x00000010 | |
149 | #define RXf_GPOS_FLOAT 0x00000020 | |
150 | /* five bits here */ | |
151 | #define RXf_ANCH (RXf_ANCH_BOL|RXf_ANCH_MBOL|RXf_ANCH_GPOS|RXf_ANCH_SBOL) | |
152 | #define RXf_GPOS_CHECK (RXf_GPOS_SEEN|RXf_ANCH_GPOS) | |
153 | #define RXf_ANCH_SINGLE (RXf_ANCH_SBOL|RXf_ANCH_GPOS) | |
154 | /* | |
155 | * 0xF800 of extflags is used by PMf_COMPILETIME | |
156 | * These are the regex equivelent of the PMf_xyz stuff defined | |
157 | * in op.h | |
158 | */ | |
159 | #define RXf_PMf_LOCALE 0x00000800 | |
160 | #define RXf_PMf_MULTILINE 0x00001000 | |
161 | #define RXf_PMf_SINGLELINE 0x00002000 | |
162 | #define RXf_PMf_FOLD 0x00004000 | |
163 | #define RXf_PMf_EXTENDED 0x00008000 | |
164 | #define RXf_PMf_COMPILETIME (RXf_PMf_MULTILINE|RXf_PMf_SINGLELINE|RXf_PMf_LOCALE|RXf_PMf_FOLD|RXf_PMf_EXTENDED) | |
165 | ||
166 | /* What we have seen */ | |
167 | /* one bit here */ | |
168 | #define RXf_LOOKBEHIND_SEEN 0x00020000 | |
169 | #define RXf_EVAL_SEEN 0x00040000 | |
170 | #define RXf_CANY_SEEN 0x00080000 | |
171 | ||
172 | /* Special */ | |
173 | #define RXf_NOSCAN 0x00100000 | |
174 | #define RXf_CHECK_ALL 0x00200000 | |
175 | ||
176 | /* UTF8 related */ | |
177 | #define RXf_UTF8 0x00400000 | |
178 | #define RXf_MATCH_UTF8 0x00800000 | |
179 | ||
180 | /* Intuit related */ | |
181 | #define RXf_USE_INTUIT_NOML 0x01000000 | |
182 | #define RXf_USE_INTUIT_ML 0x02000000 | |
183 | #define RXf_INTUIT_TAIL 0x04000000 | |
184 | /* one bit here */ | |
185 | #define RXf_USE_INTUIT (RXf_USE_INTUIT_NOML|RXf_USE_INTUIT_ML) | |
186 | ||
187 | /* Copy and tainted info */ | |
188 | #define RXf_COPY_DONE 0x10000000 | |
189 | #define RXf_TAINTED_SEEN 0x20000000 | |
190 | /* two bits here */ | |
191 | ||
192 | ||
193 | #define RX_HAS_CUTGROUP(prog) ((prog)->intflags & PREGf_CUTGROUP_SEEN) | |
194 | #define RX_MATCH_TAINTED(prog) ((prog)->extflags & RXf_TAINTED_SEEN) | |
195 | #define RX_MATCH_TAINTED_on(prog) ((prog)->extflags |= RXf_TAINTED_SEEN) | |
196 | #define RX_MATCH_TAINTED_off(prog) ((prog)->extflags &= ~RXf_TAINTED_SEEN) | |
72311751 GS |
197 | #define RX_MATCH_TAINTED_set(prog, t) ((t) \ |
198 | ? RX_MATCH_TAINTED_on(prog) \ | |
199 | : RX_MATCH_TAINTED_off(prog)) | |
c277df42 | 200 | |
bbe252da YO |
201 | #define RX_MATCH_COPIED(prog) ((prog)->extflags & RXf_COPY_DONE) |
202 | #define RX_MATCH_COPIED_on(prog) ((prog)->extflags |= RXf_COPY_DONE) | |
203 | #define RX_MATCH_COPIED_off(prog) ((prog)->extflags &= ~RXf_COPY_DONE) | |
cf93c79d IZ |
204 | #define RX_MATCH_COPIED_set(prog,t) ((t) \ |
205 | ? RX_MATCH_COPIED_on(prog) \ | |
206 | : RX_MATCH_COPIED_off(prog)) | |
f9f4320a | 207 | |
be8e71aa YO |
208 | #endif /* PLUGGABLE_RE_EXTENSION */ |
209 | ||
210 | /* Stuff that needs to be included in the plugable extension goes below here */ | |
211 | ||
f8c7b90f | 212 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
213 | #define RX_MATCH_COPY_FREE(rx) \ |
214 | STMT_START {if (rx->saved_copy) { \ | |
215 | SV_CHECK_THINKFIRST_COW_DROP(rx->saved_copy); \ | |
216 | } \ | |
217 | if (RX_MATCH_COPIED(rx)) { \ | |
218 | Safefree(rx->subbeg); \ | |
219 | RX_MATCH_COPIED_off(rx); \ | |
220 | }} STMT_END | |
221 | #else | |
222 | #define RX_MATCH_COPY_FREE(rx) \ | |
223 | STMT_START {if (RX_MATCH_COPIED(rx)) { \ | |
224 | Safefree(rx->subbeg); \ | |
225 | RX_MATCH_COPIED_off(rx); \ | |
226 | }} STMT_END | |
227 | #endif | |
228 | ||
bbe252da YO |
229 | #define RX_MATCH_UTF8(prog) ((prog)->extflags & RXf_MATCH_UTF8) |
230 | #define RX_MATCH_UTF8_on(prog) ((prog)->extflags |= RXf_MATCH_UTF8) | |
231 | #define RX_MATCH_UTF8_off(prog) ((prog)->extflags &= ~RXf_MATCH_UTF8) | |
a30b2f1f RGS |
232 | #define RX_MATCH_UTF8_set(prog, t) ((t) \ |
233 | ? (RX_MATCH_UTF8_on(prog), (PL_reg_match_utf8 = 1)) \ | |
234 | : (RX_MATCH_UTF8_off(prog), (PL_reg_match_utf8 = 0))) | |
235 | ||
cad2e5aa JH |
236 | #define REXEC_COPY_STR 0x01 /* Need to copy the string. */ |
237 | #define REXEC_CHECKED 0x02 /* check_substr already checked. */ | |
238 | #define REXEC_SCREAM 0x04 /* use scream table. */ | |
239 | #define REXEC_IGNOREPOS 0x08 /* \G matches at start. */ | |
cf93c79d | 240 | #define REXEC_NOT_FIRST 0x10 /* This is another iteration of //g. */ |
c277df42 | 241 | |
155aba94 | 242 | #define ReREFCNT_inc(re) ((void)(re && re->refcnt++), re) |
f9f4320a | 243 | #define ReREFCNT_dec(re) CALLREGFREE(re) |
cf93c79d IZ |
244 | |
245 | #define FBMcf_TAIL_DOLLAR 1 | |
cad2e5aa JH |
246 | #define FBMcf_TAIL_DOLLARM 2 |
247 | #define FBMcf_TAIL_Z 4 | |
248 | #define FBMcf_TAIL_z 8 | |
249 | #define FBMcf_TAIL (FBMcf_TAIL_DOLLAR|FBMcf_TAIL_DOLLARM|FBMcf_TAIL_Z|FBMcf_TAIL_z) | |
cf93c79d IZ |
250 | |
251 | #define FBMrf_MULTILINE 1 | |
cad2e5aa | 252 | |
5d9a96ca DM |
253 | /* an accepting state/position*/ |
254 | struct _reg_trie_accepted { | |
255 | U8 *endpos; | |
256 | U16 wordnum; | |
257 | }; | |
258 | typedef struct _reg_trie_accepted reg_trie_accepted; | |
259 | ||
3b0527fe DM |
260 | /* some basic information about the current match that is created by |
261 | * Perl_regexec_flags and then passed to regtry(), regmatch() etc */ | |
262 | ||
263 | typedef struct { | |
264 | regexp *prog; | |
265 | char *bol; | |
266 | char *till; | |
267 | SV *sv; | |
268 | char *ganch; | |
24b23f37 | 269 | char *cutpoint; |
3b0527fe DM |
270 | } regmatch_info; |
271 | ||
5d9a96ca DM |
272 | |
273 | /* structures for holding and saving the state maintained by regmatch() */ | |
274 | ||
6bda09f9 YO |
275 | #define MAX_RECURSE_EVAL_NOCHANGE_DEPTH 50 |
276 | ||
5d9a96ca DM |
277 | typedef I32 CHECKPOINT; |
278 | ||
a0374537 | 279 | typedef struct regmatch_state { |
40a82448 | 280 | int resume_state; /* where to jump to on return */ |
24d3c4a9 | 281 | char *locinput; /* where to backtrack in string on failure */ |
e822a8b4 DM |
282 | |
283 | union { | |
77cb431f DM |
284 | |
285 | /* this is a fake union member that matches the first element | |
286 | * of each member that needs to store positive backtrack | |
287 | * information */ | |
288 | struct { | |
289 | struct regmatch_state *prev_yes_state; | |
290 | } yes; | |
291 | ||
e822a8b4 | 292 | struct { |
5d458dd8 YO |
293 | /* this first element must match u.yes */ |
294 | struct regmatch_state *prev_yes_state; | |
e822a8b4 | 295 | reg_trie_accepted *accept_buff; |
166ba7cd | 296 | U32 accepted; /* how many accepting states we have seen */ |
7f69552c | 297 | U16 *jump; /* positive offsets from me */ |
166ba7cd | 298 | regnode *B; /* node following the trie */ |
7f69552c | 299 | regnode *me; /* Which node am I - needed for jump tries*/ |
e822a8b4 DM |
300 | } trie; |
301 | ||
302 | struct { | |
77cb431f DM |
303 | /* this first element must match u.yes */ |
304 | struct regmatch_state *prev_yes_state; | |
faec1544 DM |
305 | struct regmatch_state *prev_eval; |
306 | struct regmatch_state *prev_curlyx; | |
aa283a38 | 307 | regexp *prev_rex; |
faec1544 DM |
308 | U32 toggle_reg_flags; /* what bits in PL_reg_flags to |
309 | flip when transitioning between | |
310 | inner and outer rexen */ | |
aa283a38 DM |
311 | CHECKPOINT cp; /* remember current savestack indexes */ |
312 | CHECKPOINT lastcp; | |
40a82448 | 313 | regnode *B; /* the node following us */ |
6bda09f9 | 314 | U32 close_paren; /* which close bracket is our end */ |
e822a8b4 DM |
315 | } eval; |
316 | ||
317 | struct { | |
c476f425 | 318 | /* this first element must match u.yes */ |
262b90c4 | 319 | struct regmatch_state *prev_yes_state; |
c476f425 DM |
320 | struct regmatch_state *prev_curlyx; /* previous cur_curlyx */ |
321 | CHECKPOINT cp; /* remember current savestack index */ | |
322 | bool minmod; | |
a0374537 | 323 | int parenfloor;/* how far back to strip paren data */ |
c476f425 DM |
324 | int min; /* the minimal number of A's to match */ |
325 | int max; /* the maximal number of A's to match */ | |
326 | regnode *A, *B; /* the nodes corresponding to /A*B/ */ | |
327 | ||
328 | /* these two are modified by WHILEM */ | |
329 | int count; /* how many instances of A we've matched */ | |
330 | char *lastloc;/* where previous A matched (0-len detect) */ | |
e822a8b4 DM |
331 | } curlyx; |
332 | ||
333 | struct { | |
c476f425 | 334 | /* this first element must match u.yes */ |
262b90c4 | 335 | struct regmatch_state *prev_yes_state; |
c476f425 DM |
336 | struct regmatch_state *save_curlyx; |
337 | CHECKPOINT cp; /* remember current savestack indexes */ | |
338 | CHECKPOINT lastcp; | |
339 | char *save_lastloc; /* previous curlyx.lastloc */ | |
340 | I32 cache_offset; | |
341 | I32 cache_mask; | |
e822a8b4 DM |
342 | } whilem; |
343 | ||
344 | struct { | |
5d458dd8 YO |
345 | /* this first element must match u.yes */ |
346 | struct regmatch_state *prev_yes_state; | |
3b6647e0 | 347 | U32 lastparen; |
40a82448 DM |
348 | regnode *next_branch; /* next branch node */ |
349 | CHECKPOINT cp; | |
350 | } branch; | |
351 | ||
352 | struct { | |
dad79028 DM |
353 | /* this first element must match u.yes */ |
354 | struct regmatch_state *prev_yes_state; | |
e822a8b4 | 355 | I32 c1, c2; /* case fold search */ |
40a82448 DM |
356 | CHECKPOINT cp; |
357 | I32 alen; /* length of first-matched A string */ | |
358 | I32 count; | |
0cadcf80 | 359 | bool minmod; |
40a82448 DM |
360 | regnode *A, *B; /* the nodes corresponding to /A*B/ */ |
361 | regnode *me; /* the curlym node */ | |
e822a8b4 DM |
362 | } curlym; |
363 | ||
364 | struct { | |
3b6647e0 | 365 | U32 paren; |
c255a977 | 366 | CHECKPOINT cp; |
e822a8b4 | 367 | I32 c1, c2; /* case fold search */ |
c255a977 DM |
368 | char *maxpos; /* highest possible point in string to match */ |
369 | char *oldloc; /* the previous locinput */ | |
e822a8b4 | 370 | int count; |
c255a977 DM |
371 | int min, max; /* {m,n} */ |
372 | regnode *A, *B; /* the nodes corresponding to /A*B/ */ | |
373 | } curly; /* and CURLYN/PLUS/STAR */ | |
dad79028 DM |
374 | |
375 | struct { | |
376 | /* this first element must match u.yes */ | |
377 | struct regmatch_state *prev_yes_state; | |
378 | I32 wanted; | |
24d3c4a9 | 379 | I32 logical; /* saved copy of 'logical' var */ |
40a82448 | 380 | regnode *me; /* the IFMATCH/SUSPEND/UNLESSM node */ |
dad79028 | 381 | } ifmatch; /* and SUSPEND/UNLESSM */ |
e2e6a0f1 YO |
382 | |
383 | struct { | |
384 | /* this first element must match u.yes */ | |
385 | struct regmatch_state *prev_yes_state; | |
386 | struct regmatch_state *prev_mark; | |
387 | SV* mark_name; | |
388 | char *mark_loc; | |
389 | } mark; | |
d8319b27 | 390 | } u; |
5d9a96ca DM |
391 | } regmatch_state; |
392 | ||
393 | /* how many regmatch_state structs to allocate as a single slab. | |
394 | * We do it in 4K blocks for efficiency. The "3" is 2 for the next/prev | |
395 | * pointers, plus 1 for any mythical malloc overhead. */ | |
396 | ||
397 | #define PERL_REGMATCH_SLAB_SLOTS \ | |
398 | ((4096 - 3 * sizeof (void*)) / sizeof(regmatch_state)) | |
399 | ||
400 | typedef struct regmatch_slab { | |
401 | regmatch_state states[PERL_REGMATCH_SLAB_SLOTS]; | |
402 | struct regmatch_slab *prev, *next; | |
403 | } regmatch_slab; | |
1ade1aa1 | 404 | |
46ab3289 NC |
405 | #define PL_reg_flags PL_reg_state.re_state_reg_flags |
406 | #define PL_bostr PL_reg_state.re_state_bostr | |
407 | #define PL_reginput PL_reg_state.re_state_reginput | |
46ab3289 NC |
408 | #define PL_regeol PL_reg_state.re_state_regeol |
409 | #define PL_regstartp PL_reg_state.re_state_regstartp | |
410 | #define PL_regendp PL_reg_state.re_state_regendp | |
411 | #define PL_reglastparen PL_reg_state.re_state_reglastparen | |
412 | #define PL_reglastcloseparen PL_reg_state.re_state_reglastcloseparen | |
46ab3289 NC |
413 | #define PL_reg_start_tmp PL_reg_state.re_state_reg_start_tmp |
414 | #define PL_reg_start_tmpl PL_reg_state.re_state_reg_start_tmpl | |
415 | #define PL_reg_eval_set PL_reg_state.re_state_reg_eval_set | |
46ab3289 NC |
416 | #define PL_reg_match_utf8 PL_reg_state.re_state_reg_match_utf8 |
417 | #define PL_reg_magic PL_reg_state.re_state_reg_magic | |
418 | #define PL_reg_oldpos PL_reg_state.re_state_reg_oldpos | |
419 | #define PL_reg_oldcurpm PL_reg_state.re_state_reg_oldcurpm | |
420 | #define PL_reg_curpm PL_reg_state.re_state_reg_curpm | |
421 | #define PL_reg_oldsaved PL_reg_state.re_state_reg_oldsaved | |
422 | #define PL_reg_oldsavedlen PL_reg_state.re_state_reg_oldsavedlen | |
423 | #define PL_reg_maxiter PL_reg_state.re_state_reg_maxiter | |
424 | #define PL_reg_leftiter PL_reg_state.re_state_reg_leftiter | |
425 | #define PL_reg_poscache PL_reg_state.re_state_reg_poscache | |
426 | #define PL_reg_poscache_size PL_reg_state.re_state_reg_poscache_size | |
427 | #define PL_regsize PL_reg_state.re_state_regsize | |
428 | #define PL_reg_starttry PL_reg_state.re_state_reg_starttry | |
429 | #define PL_nrs PL_reg_state.re_state_nrs | |
430 | ||
1ade1aa1 NC |
431 | struct re_save_state { |
432 | U32 re_state_reg_flags; /* from regexec.c */ | |
433 | char *re_state_bostr; | |
434 | char *re_state_reginput; /* String-input pointer. */ | |
1ade1aa1 NC |
435 | char *re_state_regeol; /* End of input, for $ check. */ |
436 | I32 *re_state_regstartp; /* Pointer to startp array. */ | |
437 | I32 *re_state_regendp; /* Ditto for endp. */ | |
438 | U32 *re_state_reglastparen; /* Similarly for lastparen. */ | |
439 | U32 *re_state_reglastcloseparen; /* Similarly for lastcloseparen. */ | |
1ade1aa1 NC |
440 | char **re_state_reg_start_tmp; /* from regexec.c */ |
441 | U32 re_state_reg_start_tmpl; /* from regexec.c */ | |
442 | I32 re_state_reg_eval_set; /* from regexec.c */ | |
1ade1aa1 NC |
443 | bool re_state_reg_match_utf8; /* from regexec.c */ |
444 | MAGIC *re_state_reg_magic; /* from regexec.c */ | |
445 | I32 re_state_reg_oldpos; /* from regexec.c */ | |
446 | PMOP *re_state_reg_oldcurpm; /* from regexec.c */ | |
447 | PMOP *re_state_reg_curpm; /* from regexec.c */ | |
448 | char *re_state_reg_oldsaved; /* old saved substr during match */ | |
449 | STRLEN re_state_reg_oldsavedlen; /* old length of saved substr during match */ | |
450 | I32 re_state_reg_maxiter; /* max wait until caching pos */ | |
451 | I32 re_state_reg_leftiter; /* wait until caching pos */ | |
452 | char *re_state_reg_poscache; /* cache of pos of WHILEM */ | |
453 | STRLEN re_state_reg_poscache_size; /* size of pos cache of WHILEM */ | |
3b6647e0 | 454 | U32 re_state_regsize; /* from regexec.c */ |
1ade1aa1 NC |
455 | char *re_state_reg_starttry; /* from regexec.c */ |
456 | #ifdef PERL_OLD_COPY_ON_WRITE | |
46ab3289 | 457 | SV *re_state_nrs; /* was placeholder: unused since 5.8.0 (5.7.2 patch #12027 for bug ID 20010815.012). Used to save rx->saved_copy */ |
1ade1aa1 NC |
458 | #endif |
459 | }; | |
460 | ||
461 | #define SAVESTACK_ALLOC_FOR_RE_SAVE_STATE \ | |
462 | (1 + ((sizeof(struct re_save_state) - 1) / sizeof(*PL_savestack))) | |
463 | /* | |
464 | * Local variables: | |
465 | * c-indentation-style: bsd | |
466 | * c-basic-offset: 4 | |
467 | * indent-tabs-mode: t | |
468 | * End: | |
469 | * | |
470 | * ex: set ts=8 sts=4 sw=4 noet: | |
471 | */ |