Commit | Line | Data |
a0d0e21e |
1 | /* regexp.h |
2 | */ |
3 | |
378cc40b |
4 | /* |
5 | * Definitions etc. for regexp(3) routines. |
6 | * |
7 | * Caveat: this is V8 regexp(3) [actually, a reimplementation thereof], |
8 | * not the System V one. |
9 | */ |
10 | |
378cc40b |
11 | |
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12 | struct regnode { |
13 | U8 flags; |
14 | U8 type; |
15 | U16 next_off; |
16 | }; |
17 | |
18 | typedef struct regnode regnode; |
19 | |
c31fac66 |
20 | struct reg_data { |
21 | U32 count; |
22 | U8 *what; |
23 | void* data[1]; |
24 | }; |
25 | |
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26 | struct reg_substr_datum { |
27 | I32 min_offset; |
28 | I32 max_offset; |
29 | SV *substr; |
30 | }; |
31 | |
32 | struct reg_substr_data { |
33 | struct reg_substr_datum data[3]; /* Actual array */ |
34 | }; |
35 | |
378cc40b |
36 | typedef struct regexp { |
cf93c79d |
37 | I32 *startp; |
38 | I32 *endp; |
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39 | regnode *regstclass; |
2779dcf1 |
40 | #if 0 |
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41 | SV *anchored_substr; /* Substring at fixed position wrt start. */ |
42 | I32 anchored_offset; /* Position of it. */ |
43 | SV *float_substr; /* Substring at variable position wrt start. */ |
44 | I32 float_min_offset; /* Minimal position of it. */ |
45 | I32 float_max_offset; /* Maximal position of it. */ |
46 | SV *check_substr; /* Substring to check before matching. */ |
47 | I32 check_offset_min; /* Offset of the above. */ |
48 | I32 check_offset_max; /* Offset of the above. */ |
2779dcf1 |
49 | #else |
50 | struct reg_substr_data *substrs; |
51 | #endif |
cf93c79d |
52 | char *precomp; /* pre-compilation regular expression */ |
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53 | struct reg_data *data; /* Additional data. */ |
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54 | char *subbeg; /* saved or original string |
55 | so \digit works forever. */ |
56 | I32 sublen; /* Length of string pointed by subbeg */ |
57 | I32 refcnt; |
58 | I32 minlen; /* mininum possible length of $& */ |
59 | I32 prelen; /* length of precomp */ |
60 | U32 nparens; /* number of parentheses */ |
61 | U32 lastparen; /* last paren matched */ |
62 | U32 reganch; /* Internal use only + |
63 | Tainted information used by regexec? */ |
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64 | regnode program[1]; /* Unwarranted chumminess with compiler. */ |
378cc40b |
65 | } regexp; |
66 | |
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67 | #define anchored_substr substrs->data[0].substr |
68 | #define anchored_offset substrs->data[0].min_offset |
69 | #define float_substr substrs->data[1].substr |
70 | #define float_min_offset substrs->data[1].min_offset |
71 | #define float_max_offset substrs->data[1].max_offset |
72 | #define check_substr substrs->data[2].substr |
73 | #define check_offset_min substrs->data[2].min_offset |
74 | #define check_offset_max substrs->data[2].max_offset |
75 | |
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76 | #define ROPT_ANCH (ROPT_ANCH_BOL|ROPT_ANCH_MBOL|ROPT_ANCH_GPOS) |
77 | #define ROPT_ANCH_SINGLE (ROPT_ANCH_BOL|ROPT_ANCH_GPOS) |
a0ed51b3 |
78 | #define ROPT_ANCH_BOL 0x00001 |
79 | #define ROPT_ANCH_MBOL 0x00002 |
80 | #define ROPT_ANCH_GPOS 0x00004 |
81 | #define ROPT_SKIP 0x00008 |
82 | #define ROPT_IMPLICIT 0x00010 /* Converted .* to ^.* */ |
83 | #define ROPT_NOSCAN 0x00020 /* Check-string always at start. */ |
84 | #define ROPT_GPOS_SEEN 0x00040 |
85 | #define ROPT_CHECK_ALL 0x00080 |
86 | #define ROPT_LOOKBEHIND_SEEN 0x00100 |
87 | #define ROPT_EVAL_SEEN 0x00200 |
88 | #define ROPT_TAINTED_SEEN 0x00400 |
22e551b9 |
89 | #define ROPT_ANCH_SBOL 0x00800 |
a0ed51b3 |
90 | |
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91 | /* 0xf800 of reganch is used by PMf_COMPILETIME */ |
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92 | |
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93 | #define ROPT_UTF8 0x10000 |
94 | #define ROPT_NAUGHTY 0x20000 /* how exponential is this pattern? */ |
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95 | #define ROPT_COPY_DONE 0x40000 /* subbeg is a copy of the string */ |
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96 | |
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97 | #define RX_MATCH_TAINTED(prog) ((prog)->reganch & ROPT_TAINTED_SEEN) |
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98 | #define RX_MATCH_TAINTED_on(prog) ((prog)->reganch |= ROPT_TAINTED_SEEN) |
99 | #define RX_MATCH_TAINTED_off(prog) ((prog)->reganch &= ~ROPT_TAINTED_SEEN) |
100 | #define RX_MATCH_TAINTED_set(prog, t) ((t) \ |
101 | ? RX_MATCH_TAINTED_on(prog) \ |
102 | : RX_MATCH_TAINTED_off(prog)) |
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103 | |
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104 | #define RX_MATCH_COPIED(prog) ((prog)->reganch & ROPT_COPY_DONE) |
105 | #define RX_MATCH_COPIED_on(prog) ((prog)->reganch |= ROPT_COPY_DONE) |
106 | #define RX_MATCH_COPIED_off(prog) ((prog)->reganch &= ~ROPT_COPY_DONE) |
107 | #define RX_MATCH_COPIED_set(prog,t) ((t) \ |
108 | ? RX_MATCH_COPIED_on(prog) \ |
109 | : RX_MATCH_COPIED_off(prog)) |
110 | |
c277df42 |
111 | #define REXEC_COPY_STR 1 /* Need to copy the string. */ |
112 | #define REXEC_CHECKED 2 /* check_substr already checked. */ |
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113 | #define REXEC_SCREAM 4 /* use scream table. */ |
ad94a511 |
114 | #define REXEC_IGNOREPOS 8 /* \G matches at start. */ |
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115 | #define REXEC_NOT_FIRST 0x10 /* This is another iteration of //g. */ |
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116 | |
117 | #define ReREFCNT_inc(re) ((re && re->refcnt++), re) |
118 | #define ReREFCNT_dec(re) pregfree(re) |
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119 | |
120 | #define FBMcf_TAIL_DOLLAR 1 |
121 | #define FBMcf_TAIL_Z 2 |
122 | #define FBMcf_TAIL_z 4 |
123 | #define FBMcf_TAIL (FBMcf_TAIL_DOLLAR|FBMcf_TAIL_Z|FBMcf_TAIL_z) |
124 | |
125 | #define FBMrf_MULTILINE 1 |