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920dae64 AT |
1 | /* regexp.h |
2 | * | |
3 | * Copyright (C) 1993, 1994, 1996, 1997, 1999, 2000, 2001, 2003, | |
4 | * by Larry Wall and others | |
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 | * | |
9 | */ | |
10 | ||
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 | */ | |
17 | ||
18 | ||
19 | struct regnode { | |
20 | U8 flags; | |
21 | U8 type; | |
22 | U16 next_off; | |
23 | }; | |
24 | ||
25 | typedef struct regnode regnode; | |
26 | ||
27 | struct reg_substr_data; | |
28 | ||
29 | struct reg_data; | |
30 | ||
31 | typedef struct regexp { | |
32 | I32 *startp; | |
33 | I32 *endp; | |
34 | regnode *regstclass; | |
35 | struct reg_substr_data *substrs; | |
36 | char *precomp; /* pre-compilation regular expression */ | |
37 | struct reg_data *data; /* Additional data. */ | |
38 | char *subbeg; /* saved or original string | |
39 | so \digit works forever. */ | |
40 | U32 *offsets; /* offset annotations 20001228 MJD */ | |
41 | I32 sublen; /* Length of string pointed by subbeg */ | |
42 | I32 refcnt; | |
43 | I32 minlen; /* mininum possible length of $& */ | |
44 | I32 prelen; /* length of precomp */ | |
45 | U32 nparens; /* number of parentheses */ | |
46 | U32 lastparen; /* last paren matched */ | |
47 | U32 lastcloseparen; /* last paren matched */ | |
48 | U32 reganch; /* Internal use only + | |
49 | Tainted information used by regexec? */ | |
50 | regnode program[1]; /* Unwarranted chumminess with compiler. */ | |
51 | } regexp; | |
52 | ||
53 | #define ROPT_ANCH (ROPT_ANCH_BOL|ROPT_ANCH_MBOL|ROPT_ANCH_GPOS|ROPT_ANCH_SBOL) | |
54 | #define ROPT_ANCH_SINGLE (ROPT_ANCH_SBOL|ROPT_ANCH_GPOS) | |
55 | #define ROPT_ANCH_BOL 0x00001 | |
56 | #define ROPT_ANCH_MBOL 0x00002 | |
57 | #define ROPT_ANCH_SBOL 0x00004 | |
58 | #define ROPT_ANCH_GPOS 0x00008 | |
59 | #define ROPT_SKIP 0x00010 | |
60 | #define ROPT_IMPLICIT 0x00020 /* Converted .* to ^.* */ | |
61 | #define ROPT_NOSCAN 0x00040 /* Check-string always at start. */ | |
62 | #define ROPT_GPOS_SEEN 0x00080 | |
63 | #define ROPT_CHECK_ALL 0x00100 | |
64 | #define ROPT_LOOKBEHIND_SEEN 0x00200 | |
65 | #define ROPT_EVAL_SEEN 0x00400 | |
66 | #define ROPT_CANY_SEEN 0x00800 | |
67 | #define ROPT_SANY_SEEN ROPT_CANY_SEEN /* src bckwrd cmpt */ | |
68 | ||
69 | /* 0xf800 of reganch is used by PMf_COMPILETIME */ | |
70 | ||
71 | #define ROPT_UTF8 0x10000 | |
72 | #define ROPT_NAUGHTY 0x20000 /* how exponential is this pattern? */ | |
73 | #define ROPT_COPY_DONE 0x40000 /* subbeg is a copy of the string */ | |
74 | #define ROPT_TAINTED_SEEN 0x80000 | |
75 | #define ROPT_MATCH_UTF8 0x10000000 /* subbeg is utf-8 */ | |
76 | ||
77 | #define RE_USE_INTUIT_NOML 0x0100000 /* Best to intuit before matching */ | |
78 | #define RE_USE_INTUIT_ML 0x0200000 | |
79 | #define REINT_AUTORITATIVE_NOML 0x0400000 /* Can trust a positive answer */ | |
80 | #define REINT_AUTORITATIVE_ML 0x0800000 | |
81 | #define REINT_ONCE_NOML 0x1000000 /* Intuit can succed once only. */ | |
82 | #define REINT_ONCE_ML 0x2000000 | |
83 | #define RE_INTUIT_ONECHAR 0x4000000 | |
84 | #define RE_INTUIT_TAIL 0x8000000 | |
85 | ||
86 | #define RE_USE_INTUIT (RE_USE_INTUIT_NOML|RE_USE_INTUIT_ML) | |
87 | #define REINT_AUTORITATIVE (REINT_AUTORITATIVE_NOML|REINT_AUTORITATIVE_ML) | |
88 | #define REINT_ONCE (REINT_ONCE_NOML|REINT_ONCE_ML) | |
89 | ||
90 | #define RX_MATCH_TAINTED(prog) ((prog)->reganch & ROPT_TAINTED_SEEN) | |
91 | #define RX_MATCH_TAINTED_on(prog) ((prog)->reganch |= ROPT_TAINTED_SEEN) | |
92 | #define RX_MATCH_TAINTED_off(prog) ((prog)->reganch &= ~ROPT_TAINTED_SEEN) | |
93 | #define RX_MATCH_TAINTED_set(prog, t) ((t) \ | |
94 | ? RX_MATCH_TAINTED_on(prog) \ | |
95 | : RX_MATCH_TAINTED_off(prog)) | |
96 | ||
97 | #define RX_MATCH_COPIED(prog) ((prog)->reganch & ROPT_COPY_DONE) | |
98 | #define RX_MATCH_COPIED_on(prog) ((prog)->reganch |= ROPT_COPY_DONE) | |
99 | #define RX_MATCH_COPIED_off(prog) ((prog)->reganch &= ~ROPT_COPY_DONE) | |
100 | #define RX_MATCH_COPIED_set(prog,t) ((t) \ | |
101 | ? RX_MATCH_COPIED_on(prog) \ | |
102 | : RX_MATCH_COPIED_off(prog)) | |
103 | ||
104 | #define RX_MATCH_UTF8(prog) ((prog)->reganch & ROPT_MATCH_UTF8) | |
105 | #define RX_MATCH_UTF8_on(prog) ((prog)->reganch |= ROPT_MATCH_UTF8) | |
106 | #define RX_MATCH_UTF8_off(prog) ((prog)->reganch &= ~ROPT_MATCH_UTF8) | |
107 | #define RX_MATCH_UTF8_set(prog, t) ((t) \ | |
108 | ? (RX_MATCH_UTF8_on(prog), (PL_reg_match_utf8 = 1)) \ | |
109 | : (RX_MATCH_UTF8_off(prog), (PL_reg_match_utf8 = 0))) | |
110 | ||
111 | #define REXEC_COPY_STR 0x01 /* Need to copy the string. */ | |
112 | #define REXEC_CHECKED 0x02 /* check_substr already checked. */ | |
113 | #define REXEC_SCREAM 0x04 /* use scream table. */ | |
114 | #define REXEC_IGNOREPOS 0x08 /* \G matches at start. */ | |
115 | #define REXEC_NOT_FIRST 0x10 /* This is another iteration of //g. */ | |
116 | #define REXEC_ML 0x20 /* $* was set. */ | |
117 | ||
118 | #define ReREFCNT_inc(re) ((void)(re && re->refcnt++), re) | |
119 | #define ReREFCNT_dec(re) CALLREGFREE(aTHX_ re) | |
120 | ||
121 | #define FBMcf_TAIL_DOLLAR 1 | |
122 | #define FBMcf_TAIL_DOLLARM 2 | |
123 | #define FBMcf_TAIL_Z 4 | |
124 | #define FBMcf_TAIL_z 8 | |
125 | #define FBMcf_TAIL (FBMcf_TAIL_DOLLAR|FBMcf_TAIL_DOLLARM|FBMcf_TAIL_Z|FBMcf_TAIL_z) | |
126 | ||
127 | #define FBMrf_MULTILINE 1 | |
128 | ||
129 | struct re_scream_pos_data_s; |