Commit | Line | Data |
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a0d0e21e | 1 | /* regcomp.h |
d6376244 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
663f364b | 4 | * 2000, 2001, 2002, 2003, 2005, 2006, 2007, 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 | * | |
a687059c | 9 | */ |
3dd7db29 JK |
10 | |
11 | #ifndef PERL_REGCOMP_H_ | |
12 | #define PERL_REGCOMP_H_ | |
13 | ||
e1d1eefb | 14 | #include "regcharclass.h" |
a687059c | 15 | |
58e23c8d | 16 | /* Convert branch sequences to more efficient trie ops? */ |
07be1b83 | 17 | #define PERL_ENABLE_TRIE_OPTIMISATION 1 |
58e23c8d | 18 | |
486ec47a | 19 | /* Be really aggressive about optimising patterns with trie sequences? */ |
07be1b83 | 20 | #define PERL_ENABLE_EXTENDED_TRIE_OPTIMISATION 1 |
58e23c8d YO |
21 | |
22 | /* Should the optimiser take positive assertions into account? */ | |
68ba3a3f | 23 | #define PERL_ENABLE_POSITIVE_ASSERTION_STUDY 0 |
58e23c8d YO |
24 | |
25 | /* Not for production use: */ | |
07be1b83 | 26 | #define PERL_ENABLE_EXPERIMENTAL_REGEX_OPTIMISATIONS 0 |
58e23c8d | 27 | |
7122b237 YO |
28 | /* Activate offsets code - set to if 1 to enable */ |
29 | #ifdef DEBUGGING | |
30 | #define RE_TRACK_PATTERN_OFFSETS | |
31 | #endif | |
32 | ||
a687059c LW |
33 | /* |
34 | * The "internal use only" fields in regexp.h are present to pass info from | |
35 | * compile to execute that permits the execute phase to run lots faster on | |
36 | * simple cases. They are: | |
37 | * | |
bd61b366 | 38 | * regstart sv that must begin a match; NULL if none obvious |
a687059c LW |
39 | * reganch is the match anchored (at beginning-of-line only)? |
40 | * regmust string (pointer into program) that match must include, or NULL | |
79072805 | 41 | * [regmust changed to SV* for bminstr()--law] |
a687059c LW |
42 | * regmlen length of regmust string |
43 | * [regmlen not used currently] | |
44 | * | |
45 | * Regstart and reganch permit very fast decisions on suitable starting points | |
46 | * for a match, cutting down the work a lot. Regmust permits fast rejection | |
47 | * of lines that cannot possibly match. The regmust tests are costly enough | |
e50aee73 | 48 | * that pregcomp() supplies a regmust only if the r.e. contains something |
a687059c LW |
49 | * potentially expensive (at present, the only such thing detected is * or + |
50 | * at the start of the r.e., which can involve a lot of backup). Regmlen is | |
e50aee73 | 51 | * supplied because the test in pregexec() needs it and pregcomp() is computing |
a687059c LW |
52 | * it anyway. |
53 | * [regmust is now supplied always. The tests that use regmust have a | |
54 | * heuristic that disables the test if it usually matches.] | |
55 | * | |
56 | * [In fact, we now use regmust in many cases to locate where the search | |
57 | * starts in the string, so if regback is >= 0, the regmust search is never | |
58 | * wasted effort. The regback variable says how many characters back from | |
59 | * where regmust matched is the earliest possible start of the match. | |
60 | * For instance, /[a-z].foo/ has a regmust of 'foo' and a regback of 2.] | |
61 | */ | |
62 | ||
63 | /* | |
64 | * Structure for regexp "program". This is essentially a linear encoding | |
65 | * of a nondeterministic finite-state machine (aka syntax charts or | |
66 | * "railroad normal form" in parsing technology). Each node is an opcode | |
67 | * plus a "next" pointer, possibly plus an operand. "Next" pointers of | |
68 | * all nodes except BRANCH implement concatenation; a "next" pointer with | |
69 | * a BRANCH on both ends of it is connecting two alternatives. (Here we | |
70 | * have one of the subtle syntax dependencies: an individual BRANCH (as | |
71 | * opposed to a collection of them) is never concatenated with anything | |
72 | * because of operator precedence.) The operand of some types of node is | |
73 | * a literal string; for others, it is a node leading into a sub-FSM. In | |
74 | * particular, the operand of a BRANCH node is the first node of the branch. | |
75 | * (NB this is *not* a tree structure: the tail of the branch connects | |
a3621e74 YO |
76 | * to the thing following the set of BRANCHes.) The opcodes are defined |
77 | * in regnodes.h which is generated from regcomp.sym by regcomp.pl. | |
a687059c LW |
78 | */ |
79 | ||
a687059c LW |
80 | /* |
81 | * A node is one char of opcode followed by two chars of "next" pointer. | |
82 | * "Next" pointers are stored as two 8-bit pieces, high order first. The | |
83 | * value is a positive offset from the opcode of the node containing it. | |
84 | * An operand, if any, simply follows the node. (Note that much of the | |
85 | * code generation knows about this implicit relationship.) | |
86 | * | |
87 | * Using two bytes for the "next" pointer is vast overkill for most things, | |
88 | * but allows patterns to get big without disasters. | |
89 | * | |
e91177ed | 90 | * [The "next" pointer is always aligned on an even |
62e6ef33 | 91 | * boundary, and reads the offset directly as a short.] |
a687059c | 92 | */ |
785a26d5 YO |
93 | |
94 | /* This is the stuff that used to live in regexp.h that was truly | |
95 | private to the engine itself. It now lives here. */ | |
96 | ||
785a26d5 | 97 | typedef struct regexp_internal { |
1f1031fe | 98 | int name_list_idx; /* Optional data index of an array of paren names */ |
7122b237 YO |
99 | union { |
100 | U32 *offsets; /* offset annotations 20001228 MJD | |
101 | data about mapping the program to the | |
102 | string - | |
103 | offsets[0] is proglen when this is used | |
104 | */ | |
105 | U32 proglen; | |
106 | } u; | |
107 | ||
6d5c990f RGS |
108 | regnode *regstclass; /* Optional startclass as identified or constructed |
109 | by the optimiser */ | |
110 | struct reg_data *data; /* Additional miscellaneous data used by the program. | |
111 | Used to make it easier to clone and free arbitrary | |
112 | data that the regops need. Often the ARG field of | |
113 | a regop is an index into this structure */ | |
1acab4c5 | 114 | struct reg_code_blocks *code_blocks;/* positions of literal (?{}) */ |
6d5c990f RGS |
115 | regnode program[1]; /* Unwarranted chumminess with compiler. */ |
116 | } regexp_internal; | |
117 | ||
118 | #define RXi_SET(x,y) (x)->pprivate = (void*)(y) | |
119 | #define RXi_GET(x) ((regexp_internal *)((x)->pprivate)) | |
120 | #define RXi_GET_DECL(r,ri) regexp_internal *ri = RXi_GET(r) | |
785a26d5 YO |
121 | /* |
122 | * Flags stored in regexp->intflags | |
123 | * These are used only internally to the regexp engine | |
124 | * | |
125 | * See regexp.h for flags used externally to the regexp engine | |
126 | */ | |
e3e400ec YO |
127 | #define RXp_INTFLAGS(rx) ((rx)->intflags) |
128 | #define RX_INTFLAGS(prog) RXp_INTFLAGS(ReANY(prog)) | |
129 | ||
785a26d5 YO |
130 | #define PREGf_SKIP 0x00000001 |
131 | #define PREGf_IMPLICIT 0x00000002 /* Converted .* to ^.* */ | |
132 | #define PREGf_NAUGHTY 0x00000004 /* how exponential is this pattern? */ | |
133 | #define PREGf_VERBARG_SEEN 0x00000008 | |
134 | #define PREGf_CUTGROUP_SEEN 0x00000010 | |
732caac7 | 135 | #define PREGf_USE_RE_EVAL 0x00000020 /* compiled with "use re 'eval'" */ |
e3e400ec YO |
136 | /* these used to be extflags, but are now intflags */ |
137 | #define PREGf_NOSCAN 0x00000040 | |
33c28ab2 | 138 | /* spare */ |
8e1490ee YO |
139 | #define PREGf_GPOS_SEEN 0x00000100 |
140 | #define PREGf_GPOS_FLOAT 0x00000200 | |
785a26d5 | 141 | |
d3d47aac YO |
142 | #define PREGf_ANCH_MBOL 0x00000400 |
143 | #define PREGf_ANCH_SBOL 0x00000800 | |
144 | #define PREGf_ANCH_GPOS 0x00001000 | |
d5a00e4a | 145 | #define PREGf_RECURSE_SEEN 0x00002000 |
8e1490ee | 146 | |
d3d47aac YO |
147 | #define PREGf_ANCH \ |
148 | ( PREGf_ANCH_SBOL | PREGf_ANCH_GPOS | PREGf_ANCH_MBOL ) | |
785a26d5 YO |
149 | |
150 | /* this is where the old regcomp.h started */ | |
a687059c | 151 | |
c277df42 | 152 | struct regnode_string { |
cd439c50 | 153 | U8 str_len; |
c277df42 IZ |
154 | U8 type; |
155 | U16 next_off; | |
cd439c50 | 156 | char string[1]; |
c277df42 | 157 | }; |
a687059c | 158 | |
6bda09f9 YO |
159 | /* Argument bearing node - workhorse, |
160 | arg1 is often for the data field */ | |
c277df42 IZ |
161 | struct regnode_1 { |
162 | U8 flags; | |
163 | U8 type; | |
164 | U16 next_off; | |
165 | U32 arg1; | |
166 | }; | |
167 | ||
6bda09f9 YO |
168 | /* Similar to a regnode_1 but with an extra signed argument */ |
169 | struct regnode_2L { | |
170 | U8 flags; | |
171 | U8 type; | |
172 | U16 next_off; | |
173 | U32 arg1; | |
174 | I32 arg2; | |
175 | }; | |
176 | ||
177 | /* 'Two field' -- Two 16 bit unsigned args */ | |
c277df42 IZ |
178 | struct regnode_2 { |
179 | U8 flags; | |
180 | U8 type; | |
181 | U16 next_off; | |
182 | U16 arg1; | |
183 | U16 arg2; | |
184 | }; | |
185 | ||
e0a1ff7a KW |
186 | /* This give the number of code points that can be in the bitmap of an ANYOF |
187 | * node. The shift number must currently be one of: 8..12. It can't be less | |
188 | * than 8 (256) because some code relies on it being at least that. Above 12 | |
189 | * (4096), and you start running into warnings that some data structure widths | |
190 | * have been exceeded, though the test suite as of this writing still passes | |
191 | * for up through 16, which is as high as anyone would ever want to go, | |
192 | * encompassing all of the Unicode BMP, and thus including all the economically | |
193 | * important world scripts. At 12 most of them are: including Arabic, | |
194 | * Cyrillic, Greek, Hebrew, Indian subcontinent, Latin, and Thai; but not Han, | |
195 | * Japanese, nor Korean. (The regarglen structure in regnodes.h is a U8, and | |
196 | * the trie types TRIEC and AHOCORASICKC are larger than U8 for shift values | |
b34f51a7 | 197 | * above 12.) Be sure to benchmark before changing, as larger sizes do |
e0a1ff7a KW |
198 | * significantly slow down the test suite */ |
199 | #define NUM_ANYOF_CODE_POINTS (1 << 8) | |
6bda09f9 | 200 | |
dcb20b36 | 201 | #define ANYOF_BITMAP_SIZE (NUM_ANYOF_CODE_POINTS / 8) /* 8 bits/Byte */ |
936ed897 | 202 | |
1ee208c4 KW |
203 | /* Note that these form structs which are supersets of the next smaller one, by |
204 | * appending fields. Alignment problems can occur if one of those optional | |
205 | * fields requires stricter alignment than the base struct. And formal | |
206 | * parameters that can really be two or more of the structs should be | |
207 | * declared as the smallest one it could be. See commit message for | |
208 | * 7dcac5f6a5195002b55c935ee1d67f67e1df280b. Regnode allocation is done | |
209 | * without regard to alignment, and changing it to would also require changing | |
210 | * the code that inserts and deletes regnodes. The basic single-argument | |
211 | * regnode has a U32, which is what reganode() allocates as a unit. Therefore | |
212 | * no field can require stricter alignment than U32. */ | |
213 | ||
786e8c11 | 214 | /* also used by trie */ |
936ed897 IZ |
215 | struct regnode_charclass { |
216 | U8 flags; | |
217 | U8 type; | |
218 | U16 next_off; | |
9da99c5e | 219 | U32 arg1; /* set by set_ANYOF_arg() */ |
19103b91 | 220 | char bitmap[ANYOF_BITMAP_SIZE]; /* only compile-time */ |
936ed897 IZ |
221 | }; |
222 | ||
bf3f2d85 | 223 | /* has runtime (locale) \d, \w, ..., [:posix:] classes */ |
ea461dd6 | 224 | struct regnode_charclass_posixl { |
93e92956 | 225 | U8 flags; /* ANYOF_MATCHES_POSIXL bit must go here */ |
936ed897 IZ |
226 | U8 type; |
227 | U16 next_off; | |
7e817188 | 228 | U32 arg1; |
03fa83ba | 229 | char bitmap[ANYOF_BITMAP_SIZE]; /* both compile-time ... */ |
9cf78fa0 | 230 | U32 classflags; /* and run-time */ |
936ed897 IZ |
231 | }; |
232 | ||
85c8e306 KW |
233 | /* A synthetic start class (SSC); is a regnode_charclass_posixl_fold, plus an |
234 | * extra SV*, used only during its construction and which is not used by | |
235 | * regexec.c. Note that the 'next_off' field is unused, as the SSC stands | |
236 | * alone, so there is never a next node. Also, there is no alignment issue, | |
b8fda935 | 237 | * because these are declared or allocated as a complete unit so the compiler |
85c8e306 KW |
238 | * takes care of alignment. This is unlike the other regnodes which are |
239 | * allocated in terms of multiples of a single-argument regnode. SSC nodes can | |
240 | * have a pointer field because there is no alignment issue, and because it is | |
241 | * set to NULL after construction, before any cloning of the pattern */ | |
b8f7bb16 | 242 | struct regnode_ssc { |
93e92956 | 243 | U8 flags; /* ANYOF_MATCHES_POSIXL bit must go here */ |
b8f7bb16 KW |
244 | U8 type; |
245 | U16 next_off; | |
7e817188 | 246 | U32 arg1; |
03fa83ba | 247 | char bitmap[ANYOF_BITMAP_SIZE]; /* both compile-time ... */ |
631e9161 | 248 | U32 classflags; /* ... and run-time */ |
85c8e306 KW |
249 | |
250 | /* Auxiliary, only used during construction; NULL afterwards: list of code | |
251 | * points matched */ | |
252 | SV* invlist; | |
b8f7bb16 KW |
253 | }; |
254 | ||
71068078 KW |
255 | /* We take advantage of 'next_off' not otherwise being used in the SSC by |
256 | * actually using it: by setting it to 1. This allows us to test and | |
257 | * distinguish between an SSC and other ANYOF node types, as 'next_off' cannot | |
258 | * otherwise be 1, because it is the offset to the next regnode expressed in | |
259 | * units of regnodes. Since an ANYOF node contains extra fields, it adds up | |
260 | * to 12 regnode units on 32-bit systems, (hence the minimum this can be (if | |
261 | * not 0) is 11 there. Even if things get tightly packed on a 64-bit system, | |
262 | * it still would be more than 1. */ | |
263 | #define set_ANYOF_SYNTHETIC(n) STMT_START{ OP(n) = ANYOF; \ | |
264 | NEXT_OFF(n) = 1; \ | |
265 | } STMT_END | |
c1071334 | 266 | #define is_ANYOF_SYNTHETIC(n) (PL_regkind[OP(n)] == ANYOF && NEXT_OFF(n) == 1) |
71068078 | 267 | |
9c7e81e8 AD |
268 | /* XXX fix this description. |
269 | Impose a limit of REG_INFTY on various pattern matching operations | |
270 | to limit stack growth and to avoid "infinite" recursions. | |
271 | */ | |
4288c5b9 KW |
272 | /* The default size for REG_INFTY is U16_MAX, which is the same as |
273 | USHORT_MAX (see perl.h). Unfortunately U16 isn't necessarily 16 bits | |
274 | (see handy.h). On the Cray C90, sizeof(short)==4 and hence U16_MAX is | |
275 | ((1<<32)-1), while on the Cray T90, sizeof(short)==8 and U16_MAX is | |
276 | ((1<<64)-1). To limit stack growth to reasonable sizes, supply a | |
9c7e81e8 AD |
277 | smaller default. |
278 | --Andy Dougherty 11 June 1998 | |
279 | */ | |
280 | #if SHORTSIZE > 2 | |
281 | # ifndef REG_INFTY | |
4288c5b9 | 282 | # define REG_INFTY ((1<<16)-1) |
9c7e81e8 AD |
283 | # endif |
284 | #endif | |
285 | ||
286 | #ifndef REG_INFTY | |
4288c5b9 | 287 | # define REG_INFTY U16_MAX |
83cfe48c | 288 | #endif |
a687059c | 289 | |
e91177ed IZ |
290 | #define ARG_VALUE(arg) (arg) |
291 | #define ARG__SET(arg,val) ((arg) = (val)) | |
c277df42 | 292 | |
e8e3b0fb JH |
293 | #undef ARG |
294 | #undef ARG1 | |
295 | #undef ARG2 | |
296 | ||
c277df42 IZ |
297 | #define ARG(p) ARG_VALUE(ARG_LOC(p)) |
298 | #define ARG1(p) ARG_VALUE(ARG1_LOC(p)) | |
299 | #define ARG2(p) ARG_VALUE(ARG2_LOC(p)) | |
6bda09f9 | 300 | #define ARG2L(p) ARG_VALUE(ARG2L_LOC(p)) |
786e8c11 | 301 | |
c277df42 IZ |
302 | #define ARG_SET(p, val) ARG__SET(ARG_LOC(p), (val)) |
303 | #define ARG1_SET(p, val) ARG__SET(ARG1_LOC(p), (val)) | |
304 | #define ARG2_SET(p, val) ARG__SET(ARG2_LOC(p), (val)) | |
6bda09f9 | 305 | #define ARG2L_SET(p, val) ARG__SET(ARG2L_LOC(p), (val)) |
c277df42 | 306 | |
e8e3b0fb JH |
307 | #undef NEXT_OFF |
308 | #undef NODE_ALIGN | |
309 | ||
075abff3 AL |
310 | #define NEXT_OFF(p) ((p)->next_off) |
311 | #define NODE_ALIGN(node) | |
aa48e906 YO |
312 | /* the following define was set to 0xde in 075abff3 |
313 | * as part of some linting logic. I have set it to 0 | |
314 | * as otherwise in every place where we /might/ set flags | |
315 | * we have to set it 0 explicitly, which duplicates | |
316 | * assignments and IMO adds an unacceptable level of | |
317 | * surprise to working in the regex engine. If this | |
318 | * is changed from 0 then at the very least make sure | |
319 | * that SBOL for /^/ sets the flags to 0 explicitly. | |
320 | * -- Yves */ | |
321 | #define NODE_ALIGN_FILL(node) ((node)->flags = 0) | |
a687059c | 322 | |
c277df42 IZ |
323 | #define SIZE_ALIGN NODE_ALIGN |
324 | ||
e8e3b0fb JH |
325 | #undef OP |
326 | #undef OPERAND | |
e8e3b0fb JH |
327 | #undef STRING |
328 | ||
e91177ed | 329 | #define OP(p) ((p)->type) |
b988e673 KW |
330 | #define FLAGS(p) ((p)->flags) /* Caution: Doesn't apply to all \ |
331 | regnode types. For some, it's the \ | |
332 | character set of the regnode */ | |
c5184715 KW |
333 | #define OPERAND(p) STRING(p) |
334 | ||
cd439c50 IZ |
335 | #define STR_LEN(p) (((struct regnode_string *)p)->str_len) |
336 | #define STRING(p) (((struct regnode_string *)p)->string) | |
59e54936 | 337 | #define STR_SZ(l) (((l) + sizeof(regnode) - 1) / sizeof(regnode)) |
cd439c50 | 338 | #define NODE_SZ_STR(p) (STR_SZ(STR_LEN(p))+1) |
c7fd9c67 KW |
339 | #define setSTR_LEN(p,v) \ |
340 | ((struct regnode_string *)(p))->str_len = (v); | |
cd439c50 | 341 | |
e8e3b0fb JH |
342 | #undef NODE_ALIGN |
343 | #undef ARG_LOC | |
344 | #undef NEXTOPER | |
345 | #undef PREVOPER | |
346 | ||
e91177ed IZ |
347 | #define NODE_ALIGN(node) |
348 | #define ARG_LOC(p) (((struct regnode_1 *)p)->arg1) | |
349 | #define ARG1_LOC(p) (((struct regnode_2 *)p)->arg1) | |
350 | #define ARG2_LOC(p) (((struct regnode_2 *)p)->arg2) | |
6bda09f9 | 351 | #define ARG2L_LOC(p) (((struct regnode_2L *)p)->arg2) |
786e8c11 | 352 | |
e91177ed IZ |
353 | #define NODE_STEP_REGNODE 1 /* sizeof(regnode)/sizeof(regnode) */ |
354 | #define EXTRA_STEP_2ARGS EXTRA_SIZE(struct regnode_2) | |
355 | ||
356 | #define NODE_STEP_B 4 | |
c277df42 IZ |
357 | |
358 | #define NEXTOPER(p) ((p) + NODE_STEP_REGNODE) | |
359 | #define PREVOPER(p) ((p) - NODE_STEP_REGNODE) | |
360 | ||
f55b7b26 KW |
361 | #define FILL_NODE(offset, op) \ |
362 | STMT_START { \ | |
363 | OP(REGNODE_p(offset)) = op; \ | |
364 | NEXT_OFF(REGNODE_p(offset)) = 0; \ | |
d2a88850 | 365 | } STMT_END |
f55b7b26 KW |
366 | #define FILL_ADVANCE_NODE(offset, op) \ |
367 | STMT_START { \ | |
368 | FILL_NODE(offset, op); \ | |
369 | (offset)++; \ | |
d2a88850 | 370 | } STMT_END |
f55b7b26 KW |
371 | #define FILL_ADVANCE_NODE_ARG(offset, op, arg) \ |
372 | STMT_START { \ | |
373 | ARG_SET(REGNODE_p(offset), arg); \ | |
374 | FILL_ADVANCE_NODE(offset, op); \ | |
375 | /* This is used generically for other operations \ | |
376 | * that have a longer argument */ \ | |
377 | (offset) += regarglen[op]; \ | |
93539530 | 378 | } STMT_END |
f55b7b26 KW |
379 | #define FILL_ADVANCE_NODE_2L_ARG(offset, op, arg1, arg2) \ |
380 | STMT_START { \ | |
381 | ARG_SET(REGNODE_p(offset), arg1); \ | |
382 | ARG2L_SET(REGNODE_p(offset), arg2); \ | |
383 | FILL_ADVANCE_NODE(offset, op); \ | |
384 | (offset) += 2; \ | |
93539530 | 385 | } STMT_END |
a687059c | 386 | |
22c35a8c | 387 | #define REG_MAGIC 0234 |
a687059c | 388 | |
fe8d1b7c KW |
389 | /* An ANYOF node is basically a bitmap with the index being a code point. If |
390 | * the bit for that code point is 1, the code point matches; if 0, it doesn't | |
391 | * match (complemented if inverted). There is an additional mechanism to deal | |
392 | * with cases where the bitmap is insufficient in and of itself. This #define | |
393 | * indicates if the bitmap does fully represent what this ANYOF node can match. | |
394 | * The ARG is set to this special value (since 0, 1, ... are legal, but will | |
395 | * never reach this high). */ | |
93e92956 | 396 | #define ANYOF_ONLY_HAS_BITMAP ((U32) -1) |
137165a6 | 397 | |
93539530 | 398 | /* When the bitmap isn't completely sufficient for handling the ANYOF node, |
fe8d1b7c KW |
399 | * flags (in node->flags of the ANYOF node) get set to indicate this. These |
400 | * are perennially in short supply. Beyond several cases where warnings need | |
401 | * to be raised under certain circumstances, currently, there are six cases | |
402 | * where the bitmap alone isn't sufficient. We could use six flags to | |
403 | * represent the 6 cases, but to save flags bits, we play some games. The | |
404 | * cases are: | |
d2f465e9 | 405 | * |
fe8d1b7c KW |
406 | * 1) The bitmap has a compiled-in very finite size. So something else needs |
407 | * to be used to specify if a code point that is too large for the bitmap | |
7a94a5fe | 408 | * actually matches. The mechanism currently is an inversion |
fe8d1b7c KW |
409 | * list. ANYOF_ONLY_HAS_BITMAP, described above, being TRUE indicates |
410 | * there are no matches of too-large code points. But if it is FALSE, | |
411 | * then almost certainly there are matches too large for the bitmap. (The | |
412 | * other cases, described below, either imply this one or are extremely | |
413 | * rare in practice.) So we can just assume that a too-large code point | |
414 | * will need something beyond the bitmap if ANYOF_ONLY_HAS_BITMAP is | |
415 | * FALSE, instead of having a separate flag for this. | |
416 | * 2) A subset of item 1) is if all possible code points outside the bitmap | |
417 | * match. This is a common occurrence when the class is complemented, | |
418 | * like /[^ij]/. Therefore a bit is reserved to indicate this, | |
7a94a5fe | 419 | * rather than having a more expensive inversion list created, |
d1c40ef5 | 420 | * ANYOF_MATCHES_ALL_ABOVE_BITMAP. |
fe8d1b7c KW |
421 | * 3) Under /d rules, it can happen that code points that are in the upper |
422 | * latin1 range (\x80-\xFF or their equivalents on EBCDIC platforms) match | |
423 | * only if the runtime target string being matched against is UTF-8. For | |
424 | * example /[\w[:punct:]]/d. This happens only for posix classes (with a | |
d1c40ef5 KW |
425 | * couple of exceptions, like \d where it doesn't happen), and all such |
426 | * ones also have above-bitmap matches. Thus, 3) implies 1) as well. | |
427 | * Note that /d rules are no longer encouraged; 'use 5.14' or higher | |
428 | * deselects them. But a flag is required so that they can be properly | |
429 | * handled. But it can be a shared flag: see 5) below. | |
430 | * 4) Also under /d rules, something like /[\Wfoo]/ will match everything in | |
fe8d1b7c | 431 | * the \x80-\xFF range, unless the string being matched against is UTF-8. |
7a94a5fe KW |
432 | * An inversion list could be created for this case, but this is |
433 | * relatively common, and it turns out that it's all or nothing: if any | |
434 | * one of these code points matches, they all do. Hence a single bit | |
435 | * suffices. We use a shared flag that doesn't take up space by itself: | |
436 | * ANYOF_SHARED_d_MATCHES_ALL_NON_UTF8_NON_ASCII_non_d_WARN_SUPER. This | |
437 | * also implies 1), with one exception: [:^cntrl:]. | |
fe8d1b7c KW |
438 | * 5) A user-defined \p{} property may not have been defined by the time the |
439 | * regex is compiled. In this case, we don't know until runtime what it | |
440 | * will match, so we have to assume it could match anything, including | |
441 | * code points that ordinarily would be in the bitmap. A flag bit is | |
442 | * necessary to indicate this , though it can be shared with the item 3) | |
443 | * flag, as that only occurs under /d, and this only occurs under non-d. | |
444 | * This case is quite uncommon in the field, and the /(?[ ...])/ construct | |
445 | * is a better way to accomplish what this feature does. This case also | |
446 | * implies 1). | |
447 | * ANYOF_SHARED_d_UPPER_LATIN1_UTF8_STRING_MATCHES_non_d_RUNTIME_USER_PROP | |
e2f5e63d | 448 | * is the shared flag. |
fe8d1b7c KW |
449 | * 6) /[foo]/il may have folds that are only valid if the runtime locale is a |
450 | * UTF-8 one. These are quite rare, so it would be good to avoid the | |
451 | * expense of looking for them. But /l matching is slow anyway, and we've | |
e2f5e63d | 452 | * traditionally not worried too much about its performance. And this |
037715a6 | 453 | * condition requires the ANYOFL_FOLD flag to be set, so testing for |
fe8d1b7c | 454 | * that flag would be sufficient to rule out most cases of this. So it is |
d1c40ef5 KW |
455 | * unclear if this should have a flag or not. But, this flag can be |
456 | * shared with another, so it doesn't occupy extra space. | |
d2f465e9 | 457 | * |
d1c40ef5 | 458 | * At the moment, there is one spare bit, but this could be increased by |
93539530 | 459 | * various tricks: |
e2f5e63d | 460 | * |
93539530 | 461 | * If just one more bit is needed, as of this writing it seems to khw that the |
d1c40ef5 KW |
462 | * best choice would be to make ANYOF_MATCHES_ALL_ABOVE_BITMAP not a flag, but |
463 | * something like | |
d2f465e9 | 464 | * |
d1c40ef5 | 465 | * #define ANYOF_MATCHES_ALL_ABOVE_BITMAP ((U32) -2) |
fe8d1b7c | 466 | * |
d1c40ef5 KW |
467 | * and access it through the ARG like ANYOF_ONLY_HAS_BITMAP is. This flag is |
468 | * used by all ANYOF node types, and it could be used to avoid calling the | |
469 | * handler function, as the macro REGINCLASS in regexec.c does now for other | |
470 | * cases. | |
471 | * | |
46fc0c43 KW |
472 | * Another possibility is based on the fact that ANYOF_MATCHES_POSIXL is |
473 | * redundant with the node type ANYOFPOSIXL. That flag could be removed, but | |
474 | * at the expense of extra code in regexec.c. The flag has been retained | |
475 | * because it allows us to see if we need to call reginsert, or just use the | |
476 | * bitmap in one test. | |
fe8d1b7c | 477 | * |
46fc0c43 KW |
478 | * If this is done, an extension would be to make all ANYOFL nodes contain the |
479 | * extra 32 bits that ANYOFPOSIXL ones do. The posix flags only occupy 30 | |
480 | * bits, so the ANYOFL_SHARED_UTF8_LOCALE_fold_HAS_MATCHES_nonfold_REQD flags | |
481 | * and ANYOFL_FOLD could be moved to that extra space, but it would mean extra | |
482 | * instructions, as there are currently places in the code that assume those | |
483 | * two bits are zero. | |
d1c40ef5 KW |
484 | * |
485 | * All told, 5 bits could be available for other uses if all of the above were | |
486 | * done. | |
a4525e78 | 487 | * |
d1c40ef5 | 488 | * Some flags are not used in synthetic start class (SSC) nodes, so could be |
93e92956 KW |
489 | * shared should new flags be needed for SSCs, like SSC_MATCHES_EMPTY_STRING |
490 | * now. */ | |
b8c5462f | 491 | |
d2f465e9 KW |
492 | /* If this is set, the result of the match should be complemented. regexec.c |
493 | * is expecting this to be in the low bit. Never in an SSC */ | |
93e92956 | 494 | #define ANYOF_INVERT 0x01 |
1984f6a0 | 495 | |
a0dd4231 | 496 | /* For the SSC node only, which cannot be inverted, so is shared with that bit. |
93e92956 KW |
497 | * This is used only during regex compilation. */ |
498 | #define SSC_MATCHES_EMPTY_STRING ANYOF_INVERT | |
a0dd4231 | 499 | |
509d4de0 KW |
500 | /* Set if this is a regnode_charclass_posixl vs a regnode_charclass. This |
501 | * is used for runtime \d, \w, [:posix:], ..., which are used only in locale | |
502 | * and the optimizer's synthetic start class. Non-locale \d, etc are resolved | |
503 | * at compile-time. Only set under /l; can be in SSC */ | |
504 | #define ANYOF_MATCHES_POSIXL 0x02 | |
b63f73da KW |
505 | |
506 | /* The fold is calculated and stored in the bitmap where possible at compile | |
507 | * time. However under locale, the actual folding varies depending on | |
508 | * what the locale is at the time of execution, so it has to be deferred until | |
d2f465e9 | 509 | * then. Only set under /l; never in an SSC */ |
037715a6 | 510 | #define ANYOFL_FOLD 0x04 |
b63f73da | 511 | |
d1c40ef5 | 512 | /* Shared bit set only with ANYOFL and SSC nodes: |
269bb65b KW |
513 | * If ANYOFL_FOLD is set, this flag indicates there are potential matches |
514 | * valid only if the locale is a UTF-8 one. | |
515 | * If ANYOFL_FOLD is NOT set, this flag means to warn if the runtime locale | |
d1c40ef5 KW |
516 | * isn't a UTF-8 one (and the generated node assumes a UTF-8 locale). |
517 | * None of INVERT, POSIXL, | |
518 | * ANYOF_SHARED_d_UPPER_LATIN1_UTF8_STRING_MATCHES_non_d_RUNTIME_USER_PROP | |
519 | * can be set. */ | |
520 | #define ANYOFL_SHARED_UTF8_LOCALE_fold_HAS_MATCHES_nonfold_REQD 0x08 | |
521 | ||
522 | /* Convenience macros for teasing apart the meanings when reading the above bit | |
523 | * */ | |
524 | #define ANYOFL_SOME_FOLDS_ONLY_IN_UTF8_LOCALE(flags) \ | |
525 | ((flags & ( ANYOFL_FOLD /* Both bits are set */ \ | |
526 | |ANYOFL_SHARED_UTF8_LOCALE_fold_HAS_MATCHES_nonfold_REQD)) \ | |
527 | == ( ANYOFL_FOLD \ | |
528 | |ANYOFL_SHARED_UTF8_LOCALE_fold_HAS_MATCHES_nonfold_REQD)) | |
529 | ||
530 | #define ANYOFL_UTF8_LOCALE_REQD(flags) \ | |
531 | ((flags & ( ANYOFL_FOLD /* Only REQD bit is set */ \ | |
532 | |ANYOFL_SHARED_UTF8_LOCALE_fold_HAS_MATCHES_nonfold_REQD)) \ | |
533 | == ANYOFL_SHARED_UTF8_LOCALE_fold_HAS_MATCHES_nonfold_REQD) | |
534 | ||
1744d18d | 535 | /* Spare: Be sure to change ANYOF_FLAGS_ALL if this gets used 0x10 */ |
c8d3cd88 | 536 | |
509d4de0 KW |
537 | /* If set, the node matches every code point NUM_ANYOF_CODE_POINTS and above. |
538 | * Can be in an SSC */ | |
b3b1cf17 | 539 | #define ANYOF_MATCHES_ALL_ABOVE_BITMAP 0x20 |
ef87b810 | 540 | |
108316fb KW |
541 | /* Shared bit: |
542 | * Under /d it means the ANYOFD node matches more things if the target | |
543 | * string is encoded in UTF-8; any such things will be non-ASCII, | |
7a94a5fe KW |
544 | * characters that are < 256, and can be accessed via the inversion |
545 | * list. | |
108316fb KW |
546 | * When not under /d, it means the ANYOF node contains a user-defined |
547 | * property that wasn't yet defined at the time the regex was compiled, | |
7a94a5fe | 548 | * and so must be looked up at runtime, by creating an inversion list. |
108316fb KW |
549 | * (These uses are mutually exclusive because a user-defined property is |
550 | * specified by \p{}, and \p{} implies /u which deselects /d). The long macro | |
551 | * name is to make sure that you are cautioned about its shared nature. Only | |
552 | * the non-/d meaning can be in an SSC */ | |
553 | #define ANYOF_SHARED_d_UPPER_LATIN1_UTF8_STRING_MATCHES_non_d_RUNTIME_USER_PROP 0x40 | |
f240c685 KW |
554 | |
555 | /* Shared bit: | |
d2f465e9 | 556 | * Under /d it means the ANYOFD node matches all non-ASCII Latin1 |
f240c685 KW |
557 | * characters when the target string is not in utf8. |
558 | * When not under /d, it means the ANYOF node should raise a warning if | |
559 | * matching against an above-Unicode code point. | |
560 | * (These uses are mutually exclusive because the warning requires a \p{}, and | |
561 | * \p{} implies /u which deselects /d). An SSC node only has this bit set if | |
562 | * what is meant is the warning. The long macro name is to make sure that you | |
563 | * are cautioned about its shared nature */ | |
564 | #define ANYOF_SHARED_d_MATCHES_ALL_NON_UTF8_NON_ASCII_non_d_WARN_SUPER 0x80 | |
7bc66b18 | 565 | |
b271ede1 | 566 | #define ANYOF_FLAGS_ALL (0xff & ~0x10) |
653099ff | 567 | |
037715a6 | 568 | #define ANYOF_LOCALE_FLAGS (ANYOFL_FOLD | ANYOF_MATCHES_POSIXL) |
ace6b0e4 | 569 | |
eff8b7dc KW |
570 | /* These are the flags that apply to both regular ANYOF nodes and synthetic |
571 | * start class nodes during construction of the SSC. During finalization of | |
d2f465e9 | 572 | * the SSC, other of the flags may get added to it */ |
d1c40ef5 | 573 | #define ANYOF_COMMON_FLAGS 0 |
eff8b7dc | 574 | |
936ed897 | 575 | /* Character classes for node->classflags of ANYOF */ |
653099ff | 576 | /* Should be synchronized with a table in regprop() */ |
575a8a29 | 577 | /* 2n should be the normal one, paired with its complement at 2n+1 */ |
b8c5462f | 578 | |
08ada29e KW |
579 | #define ANYOF_ALPHA ((_CC_ALPHA) * 2) |
580 | #define ANYOF_NALPHA ((ANYOF_ALPHA) + 1) | |
e8d596e0 KW |
581 | #define ANYOF_ALPHANUMERIC ((_CC_ALPHANUMERIC) * 2) /* [[:alnum:]] isalnum(3), utf8::IsAlnum */ |
582 | #define ANYOF_NALPHANUMERIC ((ANYOF_ALPHANUMERIC) + 1) | |
08ada29e KW |
583 | #define ANYOF_ASCII ((_CC_ASCII) * 2) |
584 | #define ANYOF_NASCII ((ANYOF_ASCII) + 1) | |
e8d596e0 KW |
585 | #define ANYOF_BLANK ((_CC_BLANK) * 2) /* GNU extension: space and tab: non-vertical space */ |
586 | #define ANYOF_NBLANK ((ANYOF_BLANK) + 1) | |
b0d691b2 KW |
587 | #define ANYOF_CASED ((_CC_CASED) * 2) /* Pseudo class for [:lower:] or |
588 | [:upper:] under /i */ | |
589 | #define ANYOF_NCASED ((ANYOF_CASED) + 1) | |
08ada29e KW |
590 | #define ANYOF_CNTRL ((_CC_CNTRL) * 2) |
591 | #define ANYOF_NCNTRL ((ANYOF_CNTRL) + 1) | |
e8d596e0 KW |
592 | #define ANYOF_DIGIT ((_CC_DIGIT) * 2) /* \d */ |
593 | #define ANYOF_NDIGIT ((ANYOF_DIGIT) + 1) | |
08ada29e KW |
594 | #define ANYOF_GRAPH ((_CC_GRAPH) * 2) |
595 | #define ANYOF_NGRAPH ((ANYOF_GRAPH) + 1) | |
596 | #define ANYOF_LOWER ((_CC_LOWER) * 2) | |
597 | #define ANYOF_NLOWER ((ANYOF_LOWER) + 1) | |
598 | #define ANYOF_PRINT ((_CC_PRINT) * 2) | |
599 | #define ANYOF_NPRINT ((ANYOF_PRINT) + 1) | |
600 | #define ANYOF_PUNCT ((_CC_PUNCT) * 2) | |
601 | #define ANYOF_NPUNCT ((ANYOF_PUNCT) + 1) | |
e8d596e0 KW |
602 | #define ANYOF_SPACE ((_CC_SPACE) * 2) /* \s */ |
603 | #define ANYOF_NSPACE ((ANYOF_SPACE) + 1) | |
08ada29e KW |
604 | #define ANYOF_UPPER ((_CC_UPPER) * 2) |
605 | #define ANYOF_NUPPER ((ANYOF_UPPER) + 1) | |
e8d596e0 KW |
606 | #define ANYOF_WORDCHAR ((_CC_WORDCHAR) * 2) /* \w, PL_utf8_alnum, utf8::IsWord, ALNUM */ |
607 | #define ANYOF_NWORDCHAR ((ANYOF_WORDCHAR) + 1) | |
08ada29e KW |
608 | #define ANYOF_XDIGIT ((_CC_XDIGIT) * 2) |
609 | #define ANYOF_NXDIGIT ((ANYOF_XDIGIT) + 1) | |
b8c5462f | 610 | |
87cad4c0 | 611 | /* pseudo classes below this, not stored in the class bitmap, but used as flags |
e1d1eefb YO |
612 | during compilation of char classes */ |
613 | ||
b2ef2e34 KW |
614 | #define ANYOF_VERTWS ((_CC_VERTSPACE) * 2) |
615 | #define ANYOF_NVERTWS ((ANYOF_VERTWS)+1) | |
e1d1eefb | 616 | |
b2ef2e34 KW |
617 | /* It is best if this is the last one, as all above it are stored as bits in a |
618 | * bitmap, and it isn't part of that bitmap */ | |
619 | #if _CC_VERTSPACE != _HIGHEST_REGCOMP_DOT_H_SYNC | |
620 | # error Problem with handy.h _HIGHEST_REGCOMP_DOT_H_SYNC #define | |
621 | #endif | |
622 | ||
8efd3f97 KW |
623 | #define ANYOF_POSIXL_MAX (ANYOF_VERTWS) /* So upper loop limit is written: |
624 | * '< ANYOF_MAX' | |
625 | * Hence doesn't include VERTWS, as that | |
626 | * is a pseudo class */ | |
627 | #define ANYOF_MAX ANYOF_POSIXL_MAX | |
628 | ||
629 | #if (ANYOF_POSIXL_MAX > 32) /* Must fit in 32-bit word */ | |
b2ef2e34 | 630 | # error Problem with handy.h _CC_foo #defines |
a0947d7b KW |
631 | #endif |
632 | ||
8efd3f97 KW |
633 | #define ANYOF_HORIZWS ((ANYOF_POSIXL_MAX)+2) /* = (ANYOF_NVERTWS + 1) */ |
634 | #define ANYOF_NHORIZWS ((ANYOF_POSIXL_MAX)+3) | |
87cad4c0 | 635 | |
8efd3f97 KW |
636 | #define ANYOF_UNIPROP ((ANYOF_POSIXL_MAX)+4) /* Used to indicate a Unicode |
637 | property: \p{} or \P{} */ | |
f39a4dc2 | 638 | |
b8c5462f JH |
639 | /* Backward source code compatibility. */ |
640 | ||
641 | #define ANYOF_ALNUML ANYOF_ALNUM | |
642 | #define ANYOF_NALNUML ANYOF_NALNUM | |
643 | #define ANYOF_SPACEL ANYOF_SPACE | |
644 | #define ANYOF_NSPACEL ANYOF_NSPACE | |
8ebfc29a KW |
645 | #define ANYOF_ALNUM ANYOF_WORDCHAR |
646 | #define ANYOF_NALNUM ANYOF_NWORDCHAR | |
b8c5462f JH |
647 | |
648 | /* Utility macros for the bitmap and classes of ANYOF */ | |
649 | ||
936ed897 | 650 | #define ANYOF_FLAGS(p) ((p)->flags) |
b8c5462f | 651 | |
bc51fd78 | 652 | #define ANYOF_BIT(c) (1U << ((c) & 7)) |
b8c5462f | 653 | |
14ed74f6 KW |
654 | #define POSIXL_SET(field, c) ((field) |= (1U << (c))) |
655 | #define ANYOF_POSIXL_SET(p, c) POSIXL_SET(((regnode_charclass_posixl*) (p))->classflags, (c)) | |
8efd3f97 | 656 | |
14ed74f6 KW |
657 | #define POSIXL_CLEAR(field, c) ((field) &= ~ (1U <<(c))) |
658 | #define ANYOF_POSIXL_CLEAR(p, c) POSIXL_CLEAR(((regnode_charclass_posixl*) (p))->classflags, (c)) | |
8efd3f97 | 659 | |
14ed74f6 KW |
660 | #define POSIXL_TEST(field, c) ((field) & (1U << (c))) |
661 | #define ANYOF_POSIXL_TEST(p, c) POSIXL_TEST(((regnode_charclass_posixl*) (p))->classflags, (c)) | |
b8c5462f | 662 | |
14ed74f6 KW |
663 | #define POSIXL_ZERO(field) STMT_START { (field) = 0; } STMT_END |
664 | #define ANYOF_POSIXL_ZERO(ret) POSIXL_ZERO(((regnode_charclass_posixl*) (ret))->classflags) | |
665 | ||
666 | #define ANYOF_POSIXL_SET_TO_BITMAP(p, bits) \ | |
667 | STMT_START { \ | |
668 | ((regnode_charclass_posixl*) (p))->classflags = (bits); \ | |
669 | } STMT_END | |
9cf78fa0 KW |
670 | |
671 | /* Shifts a bit to get, eg. 0x4000_0000, then subtracts 1 to get 0x3FFF_FFFF */ | |
d1d040e5 | 672 | #define ANYOF_POSIXL_SETALL(ret) STMT_START { ((regnode_charclass_posixl*) (ret))->classflags = ((1U << ((ANYOF_POSIXL_MAX) - 1))) - 1; } STMT_END |
8efd3f97 | 673 | #define ANYOF_CLASS_SETALL(ret) ANYOF_POSIXL_SETALL(ret) |
9cf78fa0 | 674 | |
8efd3f97 | 675 | #define ANYOF_POSIXL_TEST_ANY_SET(p) \ |
93e92956 | 676 | ((ANYOF_FLAGS(p) & ANYOF_MATCHES_POSIXL) \ |
d1d040e5 | 677 | && (((regnode_charclass_posixl*)(p))->classflags)) |
8efd3f97 | 678 | #define ANYOF_CLASS_TEST_ANY_SET(p) ANYOF_POSIXL_TEST_ANY_SET(p) |
e867ce45 | 679 | |
e0e1be5f KW |
680 | /* Since an SSC always has this field, we don't have to test for that; nor do |
681 | * we want to because the bit isn't set for SSC during its construction */ | |
682 | #define ANYOF_POSIXL_SSC_TEST_ANY_SET(p) \ | |
683 | cBOOL(((regnode_ssc*)(p))->classflags) | |
684 | #define ANYOF_POSIXL_SSC_TEST_ALL_SET(p) /* Are all bits set? */ \ | |
685 | (((regnode_ssc*) (p))->classflags \ | |
686 | == ((1U << ((ANYOF_POSIXL_MAX) - 1))) - 1) | |
687 | ||
688 | #define ANYOF_POSIXL_TEST_ALL_SET(p) \ | |
93e92956 | 689 | ((ANYOF_FLAGS(p) & ANYOF_MATCHES_POSIXL) \ |
e0e1be5f KW |
690 | && ((regnode_charclass_posixl*) (p))->classflags \ |
691 | == ((1U << ((ANYOF_POSIXL_MAX) - 1))) - 1) | |
fb38762f | 692 | |
b27fd97a | 693 | #define ANYOF_POSIXL_OR(source, dest) STMT_START { (dest)->classflags |= (source)->classflags ; } STMT_END |
8efd3f97 | 694 | #define ANYOF_CLASS_OR(source, dest) ANYOF_POSIXL_OR((source), (dest)) |
936ed897 | 695 | |
cdd87c1d KW |
696 | #define ANYOF_POSIXL_AND(source, dest) STMT_START { (dest)->classflags &= (source)->classflags ; } STMT_END |
697 | ||
428c1aff KW |
698 | #define ANYOF_BITMAP_ZERO(ret) Zero(((regnode_charclass*)(ret))->bitmap, ANYOF_BITMAP_SIZE, char) |
699 | #define ANYOF_BITMAP(p) ((regnode_charclass*)(p))->bitmap | |
4cbce0a6 | 700 | #define ANYOF_BITMAP_BYTE(p, c) BITMAP_BYTE(ANYOF_BITMAP(p), c) |
b8c5462f JH |
701 | #define ANYOF_BITMAP_SET(p, c) (ANYOF_BITMAP_BYTE(p, c) |= ANYOF_BIT(c)) |
702 | #define ANYOF_BITMAP_CLEAR(p,c) (ANYOF_BITMAP_BYTE(p, c) &= ~ANYOF_BIT(c)) | |
bc51fd78 | 703 | #define ANYOF_BITMAP_TEST(p, c) cBOOL(ANYOF_BITMAP_BYTE(p, c) & ANYOF_BIT(c)) |
b8c5462f | 704 | |
f8bef550 NC |
705 | #define ANYOF_BITMAP_SETALL(p) \ |
706 | memset (ANYOF_BITMAP(p), 255, ANYOF_BITMAP_SIZE) | |
707 | #define ANYOF_BITMAP_CLEARALL(p) \ | |
708 | Zero (ANYOF_BITMAP(p), ANYOF_BITMAP_SIZE) | |
f8bef550 | 709 | |
a687059c LW |
710 | /* |
711 | * Utility definitions. | |
712 | */ | |
2304df62 | 713 | #ifndef CHARMASK |
075abff3 | 714 | # define UCHARAT(p) ((int)*(const U8*)(p)) |
a687059c | 715 | #else |
075abff3 | 716 | # define UCHARAT(p) ((int)*(p)&CHARMASK) |
a687059c | 717 | #endif |
a687059c | 718 | |
c277df42 IZ |
719 | #define EXTRA_SIZE(guy) ((sizeof(guy)-1)/sizeof(struct regnode)) |
720 | ||
e384d5c1 YO |
721 | #define REG_ZERO_LEN_SEEN 0x00000001 |
722 | #define REG_LOOKBEHIND_SEEN 0x00000002 | |
723 | #define REG_GPOS_SEEN 0x00000004 | |
471f5387 | 724 | /* spare */ |
e384d5c1 YO |
725 | #define REG_RECURSE_SEEN 0x00000020 |
726 | #define REG_TOP_LEVEL_BRANCHES_SEEN 0x00000040 | |
727 | #define REG_VERBARG_SEEN 0x00000080 | |
728 | #define REG_CUTGROUP_SEEN 0x00000100 | |
729 | #define REG_RUN_ON_COMMENT_SEEN 0x00000200 | |
730 | #define REG_UNFOLDED_MULTI_SEEN 0x00000400 | |
d5a00e4a | 731 | /* spare */ |
ee273784 YO |
732 | #define REG_UNBOUNDED_QUANTIFIER_SEEN 0x00001000 |
733 | ||
d09b2d29 | 734 | |
73c4f7a1 GS |
735 | START_EXTERN_C |
736 | ||
be8e71aa YO |
737 | #ifdef PLUGGABLE_RE_EXTENSION |
738 | #include "re_nodes.h" | |
739 | #else | |
d09b2d29 | 740 | #include "regnodes.h" |
be8e71aa | 741 | #endif |
d09b2d29 | 742 | |
f9f4320a YO |
743 | #ifndef PLUGGABLE_RE_EXTENSION |
744 | #ifndef DOINIT | |
745 | EXTCONST regexp_engine PL_core_reg_engine; | |
746 | #else /* DOINIT */ | |
747 | EXTCONST regexp_engine PL_core_reg_engine = { | |
fe578d7f | 748 | Perl_re_compile, |
2fdbfb4d | 749 | Perl_regexec_flags, |
f9f4320a YO |
750 | Perl_re_intuit_start, |
751 | Perl_re_intuit_string, | |
2fdbfb4d AB |
752 | Perl_regfree_internal, |
753 | Perl_reg_numbered_buff_fetch, | |
754 | Perl_reg_numbered_buff_store, | |
755 | Perl_reg_numbered_buff_length, | |
192b9cd1 AB |
756 | Perl_reg_named_buff, |
757 | Perl_reg_named_buff_iter, | |
49d7dfbc | 758 | Perl_reg_qr_package, |
f9f4320a | 759 | #if defined(USE_ITHREADS) |
3c13cae6 | 760 | Perl_regdupe_internal, |
f9f4320a | 761 | #endif |
3c13cae6 | 762 | Perl_re_op_compile |
f9f4320a YO |
763 | }; |
764 | #endif /* DOINIT */ | |
765 | #endif /* PLUGGABLE_RE_EXTENSION */ | |
766 | ||
767 | ||
73c4f7a1 | 768 | END_EXTERN_C |
cad2e5aa | 769 | |
cad2e5aa | 770 | |
261faec3 MJD |
771 | /* .what is a character array with one character for each member of .data |
772 | * The character describes the function of the corresponding .data item: | |
af534a04 | 773 | * a - AV for paren_name_list under DEBUGGING |
0111c4fd | 774 | * f - start-class data for regstclass optimization |
68e2671b | 775 | * l - start op for literal (?{EVAL}) item |
d63c20f2 | 776 | * L - start op for literal (?{EVAL}) item, with separate CV (qr//) |
b30fcab9 | 777 | * r - pointer to an embedded code-containing qr, e.g. /ab$qr/ |
7a94a5fe KW |
778 | * s - inversion list for Unicode-style character class, and the |
779 | * multicharacter strings resulting from casefolding the single-character | |
780 | * entries in the character class | |
a3621e74 | 781 | * t - trie struct |
55eed653 | 782 | * u - trie struct's widecharmap (a HV, so can't share, must dup) |
2b8b4781 | 783 | * also used for revcharmap and words under DEBUGGING |
07be1b83 | 784 | * T - aho-trie struct |
81714fb9 | 785 | * S - sv for named capture lookup |
261faec3 | 786 | * 20010712 mjd@plover.com |
c3613ed7 | 787 | * (Remember to update re_dup() and pregfree() if you add any items.) |
261faec3 | 788 | */ |
cad2e5aa JH |
789 | struct reg_data { |
790 | U32 count; | |
791 | U8 *what; | |
792 | void* data[1]; | |
793 | }; | |
794 | ||
a1cac82e NC |
795 | /* Code in S_to_utf8_substr() and S_to_byte_substr() in regexec.c accesses |
796 | anchored* and float* via array indexes 0 and 1. */ | |
cad2e5aa | 797 | #define anchored_substr substrs->data[0].substr |
33b8afdf | 798 | #define anchored_utf8 substrs->data[0].utf8_substr |
cad2e5aa | 799 | #define anchored_offset substrs->data[0].min_offset |
1de06328 YO |
800 | #define anchored_end_shift substrs->data[0].end_shift |
801 | ||
cad2e5aa | 802 | #define float_substr substrs->data[1].substr |
33b8afdf | 803 | #define float_utf8 substrs->data[1].utf8_substr |
cad2e5aa JH |
804 | #define float_min_offset substrs->data[1].min_offset |
805 | #define float_max_offset substrs->data[1].max_offset | |
1de06328 YO |
806 | #define float_end_shift substrs->data[1].end_shift |
807 | ||
cad2e5aa | 808 | #define check_substr substrs->data[2].substr |
33b8afdf | 809 | #define check_utf8 substrs->data[2].utf8_substr |
cad2e5aa JH |
810 | #define check_offset_min substrs->data[2].min_offset |
811 | #define check_offset_max substrs->data[2].max_offset | |
1de06328 | 812 | #define check_end_shift substrs->data[2].end_shift |
a3621e74 | 813 | |
8d919b0a FC |
814 | #define RX_ANCHORED_SUBSTR(rx) (ReANY(rx)->anchored_substr) |
815 | #define RX_ANCHORED_UTF8(rx) (ReANY(rx)->anchored_utf8) | |
816 | #define RX_FLOAT_SUBSTR(rx) (ReANY(rx)->float_substr) | |
817 | #define RX_FLOAT_UTF8(rx) (ReANY(rx)->float_utf8) | |
a3621e74 YO |
818 | |
819 | /* trie related stuff */ | |
5d9a96ca | 820 | |
a3621e74 YO |
821 | /* a transition record for the state machine. the |
822 | check field determines which state "owns" the | |
823 | transition. the char the transition is for is | |
824 | determined by offset from the owning states base | |
825 | field. the next field determines which state | |
826 | is to be transitioned to if any. | |
827 | */ | |
828 | struct _reg_trie_trans { | |
829 | U32 next; | |
830 | U32 check; | |
831 | }; | |
832 | ||
833 | /* a transition list element for the list based representation */ | |
834 | struct _reg_trie_trans_list_elem { | |
835 | U16 forid; | |
836 | U32 newstate; | |
837 | }; | |
838 | typedef struct _reg_trie_trans_list_elem reg_trie_trans_le; | |
839 | ||
840 | /* a state for compressed nodes. base is an offset | |
841 | into an array of reg_trie_trans array. If wordnum is | |
842 | nonzero the state is accepting. if base is zero then | |
843 | the state has no children (and will be accepting) | |
844 | */ | |
845 | struct _reg_trie_state { | |
846 | U16 wordnum; | |
847 | union { | |
848 | U32 base; | |
849 | reg_trie_trans_le* list; | |
850 | } trans; | |
851 | }; | |
852 | ||
2e64971a DM |
853 | /* info per word; indexed by wordnum */ |
854 | typedef struct { | |
855 | U16 prev; /* previous word in acceptance chain; eg in | |
856 | * zzz|abc|ab/ after matching the chars abc, the | |
857 | * accepted word is #2, and the previous accepted | |
858 | * word is #3 */ | |
859 | U32 len; /* how many chars long is this word? */ | |
860 | U32 accept; /* accept state for this word */ | |
861 | } reg_trie_wordinfo; | |
a3621e74 YO |
862 | |
863 | ||
a3621e74 YO |
864 | typedef struct _reg_trie_state reg_trie_state; |
865 | typedef struct _reg_trie_trans reg_trie_trans; | |
866 | ||
867 | ||
868 | /* anything in here that needs to be freed later | |
23eab42c NC |
869 | should be dealt with in pregfree. |
870 | refcount is first in both this and _reg_ac_data to allow a space | |
871 | optimisation in Perl_regdupe. */ | |
a3621e74 | 872 | struct _reg_trie_data { |
23eab42c | 873 | U32 refcount; /* number of times this trie is referenced */ |
786e8c11 YO |
874 | U32 lasttrans; /* last valid transition element */ |
875 | U16 *charmap; /* byte to charid lookup array */ | |
786e8c11 YO |
876 | reg_trie_state *states; /* state data */ |
877 | reg_trie_trans *trans; /* array of transition elements */ | |
878 | char *bitmap; /* stclass bitmap */ | |
786e8c11 YO |
879 | U16 *jump; /* optional 1 indexed array of offsets before tail |
880 | for the node following a given word. */ | |
2e64971a | 881 | reg_trie_wordinfo *wordinfo; /* array of info per word */ |
1b5c067c NC |
882 | U16 uniquecharcount; /* unique chars in trie (width of trans table) */ |
883 | U32 startstate; /* initial state - used for common prefix optimisation */ | |
884 | STRLEN minlen; /* minimum length of words in trie - build/opt only? */ | |
885 | STRLEN maxlen; /* maximum length of words in trie - build/opt only? */ | |
2e64971a | 886 | U32 prefixlen; /* #chars in common prefix */ |
1e2e3d02 YO |
887 | U32 statecount; /* Build only - number of states in the states array |
888 | (including the unused zero state) */ | |
786e8c11 | 889 | U32 wordcount; /* Build only */ |
a3621e74 | 890 | #ifdef DEBUGGING |
786e8c11 | 891 | STRLEN charcount; /* Build only */ |
a3621e74 YO |
892 | #endif |
893 | }; | |
2b8b4781 NC |
894 | /* There is one (3 under DEBUGGING) pointers that logically belong in this |
895 | structure, but are held outside as they need duplication on thread cloning, | |
896 | whereas the rest of the structure can be read only: | |
897 | HV *widecharmap; code points > 255 to charid | |
898 | #ifdef DEBUGGING | |
899 | AV *words; Array of words contained in trie, for dumping | |
900 | AV *revcharmap; Map of each charid back to its character representation | |
901 | #endif | |
902 | */ | |
903 | ||
904 | #define TRIE_WORDS_OFFSET 2 | |
905 | ||
a3621e74 YO |
906 | typedef struct _reg_trie_data reg_trie_data; |
907 | ||
23eab42c NC |
908 | /* refcount is first in both this and _reg_trie_data to allow a space |
909 | optimisation in Perl_regdupe. */ | |
07be1b83 | 910 | struct _reg_ac_data { |
23eab42c | 911 | U32 refcount; |
1b5c067c | 912 | U32 trie; |
07be1b83 YO |
913 | U32 *fail; |
914 | reg_trie_state *states; | |
07be1b83 YO |
915 | }; |
916 | typedef struct _reg_ac_data reg_ac_data; | |
917 | ||
486ec47a | 918 | /* ANY_BIT doesn't use the structure, so we can borrow it here. |
3dab1dad YO |
919 | This is simpler than refactoring all of it as wed end up with |
920 | three different sets... */ | |
921 | ||
922 | #define TRIE_BITMAP(p) (((reg_trie_data *)(p))->bitmap) | |
4cbce0a6 | 923 | #define TRIE_BITMAP_BYTE(p, c) BITMAP_BYTE(TRIE_BITMAP(p), c) |
5dfe062f YO |
924 | #define TRIE_BITMAP_SET(p, c) (TRIE_BITMAP_BYTE(p, c) |= ANYOF_BIT((U8)c)) |
925 | #define TRIE_BITMAP_CLEAR(p,c) (TRIE_BITMAP_BYTE(p, c) &= ~ANYOF_BIT((U8)c)) | |
926 | #define TRIE_BITMAP_TEST(p, c) (TRIE_BITMAP_BYTE(p, c) & ANYOF_BIT((U8)c)) | |
3dab1dad | 927 | |
1de06328 YO |
928 | #define IS_ANYOF_TRIE(op) ((op)==TRIEC || (op)==AHOCORASICKC) |
929 | #define IS_TRIE_AC(op) ((op)>=AHOCORASICK) | |
930 | ||
931 | ||
0effac60 | 932 | #define BITMAP_BYTE(p, c) (( (U8*) p) [ ( ( (UV) (c)) >> 3) ] ) |
786e8c11 | 933 | #define BITMAP_TEST(p, c) (BITMAP_BYTE(p, c) & ANYOF_BIT((U8)c)) |
3dab1dad | 934 | |
a3621e74 YO |
935 | /* these defines assume uniquecharcount is the correct variable, and state may be evaluated twice */ |
936 | #define TRIE_NODENUM(state) (((state)-1)/(trie->uniquecharcount)+1) | |
937 | #define SAFE_TRIE_NODENUM(state) ((state) ? (((state)-1)/(trie->uniquecharcount)+1) : (state)) | |
938 | #define TRIE_NODEIDX(state) ((state) ? (((state)-1)*(trie->uniquecharcount)+1) : (state)) | |
939 | ||
3dab1dad | 940 | #ifdef DEBUGGING |
3dab1dad | 941 | #define TRIE_CHARCOUNT(trie) ((trie)->charcount) |
3dab1dad | 942 | #else |
3dab1dad | 943 | #define TRIE_CHARCOUNT(trie) (trie_charcount) |
3dab1dad | 944 | #endif |
a3621e74 | 945 | |
0111c4fd RGS |
946 | #define RE_TRIE_MAXBUF_INIT 65536 |
947 | #define RE_TRIE_MAXBUF_NAME "\022E_TRIE_MAXBUF" | |
a3621e74 YO |
948 | #define RE_DEBUG_FLAGS "\022E_DEBUG_FLAGS" |
949 | ||
6ef7fe53 KW |
950 | #define RE_COMPILE_RECURSION_INIT 1000 |
951 | #define RE_COMPILE_RECURSION_LIMIT "\022E_COMPILE_RECURSION_LIMIT" | |
952 | ||
be8e71aa YO |
953 | /* |
954 | ||
955 | RE_DEBUG_FLAGS is used to control what debug output is emitted | |
956 | its divided into three groups of options, some of which interact. | |
957 | The three groups are: Compile, Execute, Extra. There is room for a | |
958 | further group, as currently only the low three bytes are used. | |
959 | ||
960 | Compile Options: | |
07be1b83 | 961 | |
be8e71aa YO |
962 | PARSE |
963 | PEEP | |
964 | TRIE | |
965 | PROGRAM | |
966 | OFFSETS | |
a3621e74 | 967 | |
be8e71aa | 968 | Execute Options: |
a3621e74 | 969 | |
be8e71aa YO |
970 | INTUIT |
971 | MATCH | |
972 | TRIE | |
a3621e74 | 973 | |
be8e71aa | 974 | Extra Options |
a3621e74 | 975 | |
be8e71aa YO |
976 | TRIE |
977 | OFFSETS | |
978 | ||
979 | If you modify any of these make sure you make corresponding changes to | |
980 | re.pm, especially to the documentation. | |
a3621e74 | 981 | |
be8e71aa YO |
982 | */ |
983 | ||
984 | ||
985 | /* Compile */ | |
986 | #define RE_DEBUG_COMPILE_MASK 0x0000FF | |
987 | #define RE_DEBUG_COMPILE_PARSE 0x000001 | |
988 | #define RE_DEBUG_COMPILE_OPTIMISE 0x000002 | |
989 | #define RE_DEBUG_COMPILE_TRIE 0x000004 | |
990 | #define RE_DEBUG_COMPILE_DUMP 0x000008 | |
f7819f85 | 991 | #define RE_DEBUG_COMPILE_FLAGS 0x000010 |
d9a72fcc | 992 | #define RE_DEBUG_COMPILE_TEST 0x000020 |
be8e71aa YO |
993 | |
994 | /* Execute */ | |
995 | #define RE_DEBUG_EXECUTE_MASK 0x00FF00 | |
996 | #define RE_DEBUG_EXECUTE_INTUIT 0x000100 | |
997 | #define RE_DEBUG_EXECUTE_MATCH 0x000200 | |
998 | #define RE_DEBUG_EXECUTE_TRIE 0x000400 | |
999 | ||
1000 | /* Extra */ | |
fd41b2d1 KW |
1001 | #define RE_DEBUG_EXTRA_MASK 0x1FF0000 |
1002 | #define RE_DEBUG_EXTRA_TRIE 0x0010000 | |
1003 | #define RE_DEBUG_EXTRA_OFFSETS 0x0020000 | |
1004 | #define RE_DEBUG_EXTRA_OFFDEBUG 0x0040000 | |
1005 | #define RE_DEBUG_EXTRA_STATE 0x0080000 | |
1006 | #define RE_DEBUG_EXTRA_OPTIMISE 0x0100000 | |
1007 | #define RE_DEBUG_EXTRA_BUFFERS 0x0400000 | |
1008 | #define RE_DEBUG_EXTRA_GPOS 0x0800000 | |
1009 | #define RE_DEBUG_EXTRA_DUMP_PRE_OPTIMIZE 0x1000000 | |
24b23f37 | 1010 | /* combined */ |
fd41b2d1 | 1011 | #define RE_DEBUG_EXTRA_STACK 0x0280000 |
be8e71aa | 1012 | |
e68ec53f | 1013 | #define RE_DEBUG_FLAG(x) (re_debug_flags & x) |
be8e71aa YO |
1014 | /* Compile */ |
1015 | #define DEBUG_COMPILE_r(x) DEBUG_r( \ | |
dafb2544 | 1016 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_COMPILE_MASK)) x ) |
be8e71aa | 1017 | #define DEBUG_PARSE_r(x) DEBUG_r( \ |
dafb2544 | 1018 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_COMPILE_PARSE)) x ) |
be8e71aa | 1019 | #define DEBUG_OPTIMISE_r(x) DEBUG_r( \ |
dafb2544 | 1020 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_COMPILE_OPTIMISE)) x ) |
be8e71aa | 1021 | #define DEBUG_DUMP_r(x) DEBUG_r( \ |
dafb2544 | 1022 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_COMPILE_DUMP)) x ) |
be8e71aa | 1023 | #define DEBUG_TRIE_COMPILE_r(x) DEBUG_r( \ |
dafb2544 | 1024 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_COMPILE_TRIE)) x ) |
f7819f85 | 1025 | #define DEBUG_FLAGS_r(x) DEBUG_r( \ |
dafb2544 | 1026 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_COMPILE_FLAGS)) x ) |
d9a72fcc | 1027 | #define DEBUG_TEST_r(x) DEBUG_r( \ |
dafb2544 | 1028 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_COMPILE_TEST)) x ) |
be8e71aa YO |
1029 | /* Execute */ |
1030 | #define DEBUG_EXECUTE_r(x) DEBUG_r( \ | |
dafb2544 | 1031 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_EXECUTE_MASK)) x ) |
be8e71aa | 1032 | #define DEBUG_INTUIT_r(x) DEBUG_r( \ |
dafb2544 | 1033 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_EXECUTE_INTUIT)) x ) |
be8e71aa | 1034 | #define DEBUG_MATCH_r(x) DEBUG_r( \ |
dafb2544 | 1035 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_EXECUTE_MATCH)) x ) |
be8e71aa | 1036 | #define DEBUG_TRIE_EXECUTE_r(x) DEBUG_r( \ |
dafb2544 | 1037 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_EXECUTE_TRIE)) x ) |
be8e71aa YO |
1038 | |
1039 | /* Extra */ | |
1040 | #define DEBUG_EXTRA_r(x) DEBUG_r( \ | |
dafb2544 | 1041 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_EXTRA_MASK)) x ) |
a5ca303d | 1042 | #define DEBUG_OFFSETS_r(x) DEBUG_r( \ |
dafb2544 | 1043 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_EXTRA_OFFSETS)) x ) |
ab3bbdeb | 1044 | #define DEBUG_STATE_r(x) DEBUG_r( \ |
dafb2544 | 1045 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_EXTRA_STATE)) x ) |
24b23f37 | 1046 | #define DEBUG_STACK_r(x) DEBUG_r( \ |
dafb2544 | 1047 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_EXTRA_STACK)) x ) |
e7707071 | 1048 | #define DEBUG_BUFFERS_r(x) DEBUG_r( \ |
dafb2544 | 1049 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_EXTRA_BUFFERS)) x ) |
e7707071 | 1050 | |
a5ca303d | 1051 | #define DEBUG_OPTIMISE_MORE_r(x) DEBUG_r( \ |
dafb2544 KW |
1052 | if (DEBUG_v_TEST || ((RE_DEBUG_EXTRA_OPTIMISE|RE_DEBUG_COMPILE_OPTIMISE) == \ |
1053 | (re_debug_flags & (RE_DEBUG_EXTRA_OPTIMISE|RE_DEBUG_COMPILE_OPTIMISE)))) x ) | |
07be1b83 | 1054 | #define MJD_OFFSET_DEBUG(x) DEBUG_r( \ |
dafb2544 | 1055 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_EXTRA_OFFDEBUG)) \ |
be8e71aa YO |
1056 | Perl_warn_nocontext x ) |
1057 | #define DEBUG_TRIE_COMPILE_MORE_r(x) DEBUG_TRIE_COMPILE_r( \ | |
dafb2544 | 1058 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_EXTRA_TRIE)) x ) |
be8e71aa | 1059 | #define DEBUG_TRIE_EXECUTE_MORE_r(x) DEBUG_TRIE_EXECUTE_r( \ |
dafb2544 | 1060 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_EXTRA_TRIE)) x ) |
be8e71aa YO |
1061 | |
1062 | #define DEBUG_TRIE_r(x) DEBUG_r( \ | |
dafb2544 KW |
1063 | if (DEBUG_v_TEST || (re_debug_flags & (RE_DEBUG_COMPILE_TRIE \ |
1064 | | RE_DEBUG_EXECUTE_TRIE ))) x ) | |
2c296965 | 1065 | #define DEBUG_GPOS_r(x) DEBUG_r( \ |
dafb2544 | 1066 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_EXTRA_GPOS)) x ) |
be8e71aa | 1067 | |
fd41b2d1 KW |
1068 | #define DEBUG_DUMP_PRE_OPTIMIZE_r(x) DEBUG_r( \ |
1069 | if (DEBUG_v_TEST || (re_debug_flags & RE_DEBUG_EXTRA_DUMP_PRE_OPTIMIZE)) x ) | |
1070 | ||
be8e71aa | 1071 | /* initialization */ |
d2d8c711 | 1072 | /* get_sv() can return NULL during global destruction. */ |
e68ec53f YO |
1073 | #define GET_RE_DEBUG_FLAGS DEBUG_r({ \ |
1074 | SV * re_debug_flags_sv = NULL; \ | |
243a3b9c | 1075 | re_debug_flags_sv = PL_curcop ? get_sv(RE_DEBUG_FLAGS, GV_ADD) : NULL; \ |
e68ec53f | 1076 | if (re_debug_flags_sv) { \ |
8e9a8a48 | 1077 | if (!SvIOK(re_debug_flags_sv)) \ |
e68ec53f | 1078 | sv_setuv(re_debug_flags_sv, RE_DEBUG_COMPILE_DUMP | RE_DEBUG_EXECUTE_MASK ); \ |
8e9a8a48 | 1079 | re_debug_flags=SvIV(re_debug_flags_sv); \ |
e68ec53f YO |
1080 | }\ |
1081 | }) | |
a3621e74 YO |
1082 | |
1083 | #ifdef DEBUGGING | |
ab3bbdeb | 1084 | |
8162b70e | 1085 | #define GET_RE_DEBUG_FLAGS_DECL volatile IV re_debug_flags = 0; \ |
cb65b687 | 1086 | PERL_UNUSED_VAR(re_debug_flags); GET_RE_DEBUG_FLAGS; |
ab3bbdeb | 1087 | |
eecd4d11 KW |
1088 | #define RE_PV_COLOR_DECL(rpv,rlen,isuni,dsv,pv,l,m,c1,c2) \ |
1089 | const char * const rpv = \ | |
1090 | pv_pretty((dsv), (pv), (l), (m), \ | |
1091 | PL_colors[(c1)],PL_colors[(c2)], \ | |
c89df6cf | 1092 | PERL_PV_ESCAPE_RE|PERL_PV_ESCAPE_NONASCII |((isuni) ? PERL_PV_ESCAPE_UNI : 0) ); \ |
0df25f3d | 1093 | const int rlen = SvCUR(dsv) |
ab3bbdeb | 1094 | |
8ec77c3c | 1095 | /* This is currently unsed in the core */ |
eecd4d11 KW |
1096 | #define RE_SV_ESCAPE(rpv,isuni,dsv,sv,m) \ |
1097 | const char * const rpv = \ | |
1098 | pv_pretty((dsv), (SvPV_nolen_const(sv)), (SvCUR(sv)), (m), \ | |
1099 | PL_colors[(c1)],PL_colors[(c2)], \ | |
c89df6cf | 1100 | PERL_PV_ESCAPE_RE|PERL_PV_ESCAPE_NONASCII |((isuni) ? PERL_PV_ESCAPE_UNI : 0) ) |
ab3bbdeb | 1101 | |
eecd4d11 KW |
1102 | #define RE_PV_QUOTED_DECL(rpv,isuni,dsv,pv,l,m) \ |
1103 | const char * const rpv = \ | |
1104 | pv_pretty((dsv), (pv), (l), (m), \ | |
1105 | PL_colors[0], PL_colors[1], \ | |
c89df6cf | 1106 | ( PERL_PV_PRETTY_QUOTE | PERL_PV_ESCAPE_RE | PERL_PV_ESCAPE_NONASCII | PERL_PV_PRETTY_ELLIPSES | \ |
ab3bbdeb | 1107 | ((isuni) ? PERL_PV_ESCAPE_UNI : 0)) \ |
0a0e9afc | 1108 | ) |
ab3bbdeb YO |
1109 | |
1110 | #define RE_SV_DUMPLEN(ItEm) (SvCUR(ItEm) - (SvTAIL(ItEm)!=0)) | |
1111 | #define RE_SV_TAIL(ItEm) (SvTAIL(ItEm) ? "$" : "") | |
1112 | ||
1113 | #else /* if not DEBUGGING */ | |
1114 | ||
a3621e74 | 1115 | #define GET_RE_DEBUG_FLAGS_DECL |
ab3bbdeb YO |
1116 | #define RE_PV_COLOR_DECL(rpv,rlen,isuni,dsv,pv,l,m,c1,c2) |
1117 | #define RE_SV_ESCAPE(rpv,isuni,dsv,sv,m) | |
1118 | #define RE_PV_QUOTED_DECL(rpv,isuni,dsv,pv,l,m) | |
1119 | #define RE_SV_DUMPLEN(ItEm) | |
1120 | #define RE_SV_TAIL(ItEm) | |
1121 | ||
1122 | #endif /* DEBUG RELATED DEFINES */ | |
a3621e74 | 1123 | |
0bc0e44f | 1124 | #define FIRST_NON_ASCII_DECIMAL_DIGIT 0x660 /* ARABIC_INDIC_DIGIT_ZERO */ |
2ca74f27 | 1125 | |
64935bc6 KW |
1126 | typedef enum { |
1127 | TRADITIONAL_BOUND = _CC_WORDCHAR, | |
ae3bb8ea | 1128 | GCB_BOUND, |
6b659339 | 1129 | LB_BOUND, |
06ae2722 | 1130 | SB_BOUND, |
ae3bb8ea | 1131 | WB_BOUND |
64935bc6 KW |
1132 | } bound_type; |
1133 | ||
3146c00a KW |
1134 | /* This unpacks the FLAGS field of ANYOFHx nodes. The value it contains |
1135 | * gives the strict lower bound for the UTF-8 start byte of any code point | |
1136 | * matchable by the node, and a loose upper bound as well. | |
1137 | * | |
1138 | * The low bound is stored in the upper 6 bits, plus 0xC0. | |
1139 | * The loose upper bound is determined from the lowest 2 bits and the low bound | |
1140 | * (called x) as follows: | |
1141 | * | |
1142 | * 11 The upper limit of the range can be as much as (EF - x) / 8 | |
1143 | * 10 The upper limit of the range can be as much as (EF - x) / 4 | |
1144 | * 01 The upper limit of the range can be as much as (EF - x) / 2 | |
1145 | * 00 The upper limit of the range can be as much as EF | |
1146 | * | |
0bf4efd7 KW |
1147 | * For motivation of this design, see commit message in |
1148 | * 3146c00a633e9cbed741e10146662fbcedfdb8d3 */ | |
3146c00a KW |
1149 | #ifdef EBCDIC |
1150 | # define MAX_ANYOF_HRx_BYTE 0xF4 | |
1151 | #else | |
1152 | # define MAX_ANYOF_HRx_BYTE 0xEF | |
1153 | #endif | |
1154 | #define LOWEST_ANYOF_HRx_BYTE(b) (((b) >> 2) + 0xC0) | |
1155 | #define HIGHEST_ANYOF_HRx_BYTE(b) \ | |
1156 | (LOWEST_ANYOF_HRx_BYTE(b) \ | |
1157 | + ((MAX_ANYOF_HRx_BYTE - LOWEST_ANYOF_HRx_BYTE(b)) >> ((b) & 3))) | |
1158 | ||
3dd7db29 JK |
1159 | #endif /* PERL_REGCOMP_H_ */ |
1160 | ||
e9a8c099 | 1161 | /* |
14d04a33 | 1162 | * ex: set ts=8 sts=4 sw=4 et: |
e9a8c099 | 1163 | */ |