Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1 | /* |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2 | * Secret Labs' Regular Expression Engine |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 3 | * |
Fredrik Lundh | 6c68dc7 | 2000-06-29 10:34:56 +0000 | [diff] [blame] | 4 | * regular expression matching engine |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 5 | * |
| 6 | * partial history: |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 7 | * 99-10-24 fl created (based on existing template matcher code) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 8 | * 00-03-06 fl first alpha, sort of (0.5) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 9 | * 00-06-30 fl added fast search optimization (0.9.3) |
| 10 | * 00-06-30 fl added assert (lookahead) primitives, etc (0.9.4) |
| 11 | * 00-07-02 fl added charset optimizations, etc (0.9.5) |
| 12 | * 00-07-03 fl store code in pattern object, lookbehind, etc |
| 13 | * 00-07-08 fl added regs attribute |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 14 | * 00-07-21 fl reset lastindex in scanner methods (0.9.6) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 15 | * 00-08-01 fl fixes for 1.6b1 (0.9.8) |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 16 | * 00-08-02 fl moved SRE_COUNT out of the match method |
| 17 | * 00-08-03 fl added recursion limit |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 18 | * |
| 19 | * Copyright (c) 1997-2000 by Secret Labs AB. All rights reserved. |
| 20 | * |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 21 | * This version of the SRE library can be redistributed under CNRI's |
| 22 | * Python 1.6 license. For any other use, please contact Secret Labs |
| 23 | * AB (info@pythonware.com). |
| 24 | * |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 25 | * Portions of this engine have been developed in cooperation with |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 26 | * CNRI. Hewlett-Packard provided funding for 1.6 integration and |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 27 | * other compatibility work. |
| 28 | */ |
| 29 | |
| 30 | #ifndef SRE_RECURSIVE |
| 31 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 32 | char copyright[] = " SRE 0.9.8 Copyright (c) 1997-2000 by Secret Labs AB "; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 33 | |
| 34 | #include "Python.h" |
| 35 | |
| 36 | #include "sre.h" |
| 37 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 38 | #if defined(HAVE_LIMITS_H) |
| 39 | #include <limits.h> |
| 40 | #else |
| 41 | #define INT_MAX 2147483647 |
| 42 | #endif |
| 43 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 44 | #include <ctype.h> |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 45 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 46 | /* name of this module, minus the leading underscore */ |
| 47 | #define MODULE "sre" |
| 48 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 49 | /* defining this one enables tracing */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 50 | #undef VERBOSE |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 51 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 52 | #if PY_VERSION_HEX >= 0x01060000 |
Fredrik Lundh | 22d2546 | 2000-07-01 17:50:59 +0000 | [diff] [blame] | 53 | /* defining this enables unicode support (default under 1.6a1 and later) */ |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 54 | #define HAVE_UNICODE |
| 55 | #endif |
| 56 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 57 | /* -------------------------------------------------------------------- */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 58 | /* optional features */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 59 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 60 | /* prevent run-away recursion (bad patterns on long strings) */ |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame^] | 61 | #if !defined(USE_STACKCHECK) |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 62 | #define USE_RECURSION_LIMIT 10000 |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame^] | 63 | #endif |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 64 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 65 | /* enables fast searching */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 66 | #define USE_FAST_SEARCH |
| 67 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 68 | /* enables aggressive inlining (always on for Visual C) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 69 | #undef USE_INLINE |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 70 | |
| 71 | /* -------------------------------------------------------------------- */ |
| 72 | |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 73 | #if defined(_MSC_VER) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 74 | #pragma optimize("agtw", on) /* doesn't seem to make much difference... */ |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 75 | #pragma warning(disable: 4710) /* who cares if functions are not inlined ;-) */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 76 | /* fastest possible local call under MSVC */ |
| 77 | #define LOCAL(type) static __inline type __fastcall |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 78 | #elif defined(USE_INLINE) |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 79 | #define LOCAL(type) static inline type |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 80 | #else |
| 81 | #define LOCAL(type) static type |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 82 | #endif |
| 83 | |
| 84 | /* error codes */ |
| 85 | #define SRE_ERROR_ILLEGAL -1 /* illegal opcode */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 86 | #define SRE_ERROR_STATE -2 /* illegal state */ |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 87 | #define SRE_ERROR_RECURSION_LIMIT -3 /* runaway recursion */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 88 | #define SRE_ERROR_MEMORY -9 /* out of memory */ |
| 89 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 90 | #if defined(VERBOSE) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 91 | #define TRACE(v) printf v |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 92 | #else |
| 93 | #define TRACE(v) |
| 94 | #endif |
| 95 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 96 | #define PTR(ptr) ((SRE_CHAR*) (ptr) - (SRE_CHAR*) state->beginning) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 97 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 98 | /* -------------------------------------------------------------------- */ |
| 99 | /* search engine state */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 100 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 101 | /* default character predicates (run sre_chars.py to regenerate tables) */ |
| 102 | |
| 103 | #define SRE_DIGIT_MASK 1 |
| 104 | #define SRE_SPACE_MASK 2 |
| 105 | #define SRE_LINEBREAK_MASK 4 |
| 106 | #define SRE_ALNUM_MASK 8 |
| 107 | #define SRE_WORD_MASK 16 |
| 108 | |
| 109 | static char sre_char_info[128] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 6, 2, |
| 110 | 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, |
| 111 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, |
| 112 | 25, 25, 0, 0, 0, 0, 0, 0, 0, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, |
| 113 | 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 0, 0, |
| 114 | 0, 0, 16, 0, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, |
| 115 | 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 0, 0, 0, 0, 0 }; |
| 116 | |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 117 | static char sre_char_lower[128] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 118 | 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, |
| 119 | 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, |
| 120 | 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, |
| 121 | 61, 62, 63, 64, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, |
| 122 | 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, |
| 123 | 122, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, |
| 124 | 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, |
| 125 | 120, 121, 122, 123, 124, 125, 126, 127 }; |
| 126 | |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 127 | static unsigned int sre_lower(unsigned int ch) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 128 | { |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 129 | return ((ch) < 128 ? sre_char_lower[ch] : ch); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 130 | } |
| 131 | |
| 132 | #define SRE_IS_DIGIT(ch)\ |
| 133 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_DIGIT_MASK) : 0) |
| 134 | #define SRE_IS_SPACE(ch)\ |
| 135 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_SPACE_MASK) : 0) |
| 136 | #define SRE_IS_LINEBREAK(ch)\ |
| 137 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_LINEBREAK_MASK) : 0) |
| 138 | #define SRE_IS_ALNUM(ch)\ |
| 139 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_ALNUM_MASK) : 0) |
| 140 | #define SRE_IS_WORD(ch)\ |
| 141 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_WORD_MASK) : 0) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 142 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 143 | /* locale-specific character predicates */ |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 144 | |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 145 | static unsigned int sre_lower_locale(unsigned int ch) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 146 | { |
| 147 | return ((ch) < 256 ? tolower((ch)) : ch); |
| 148 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 149 | #define SRE_LOC_IS_DIGIT(ch) ((ch) < 256 ? isdigit((ch)) : 0) |
| 150 | #define SRE_LOC_IS_SPACE(ch) ((ch) < 256 ? isspace((ch)) : 0) |
| 151 | #define SRE_LOC_IS_LINEBREAK(ch) ((ch) == '\n') |
| 152 | #define SRE_LOC_IS_ALNUM(ch) ((ch) < 256 ? isalnum((ch)) : 0) |
| 153 | #define SRE_LOC_IS_WORD(ch) (SRE_LOC_IS_ALNUM((ch)) || (ch) == '_') |
| 154 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 155 | /* unicode-specific character predicates */ |
| 156 | |
| 157 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 158 | static unsigned int sre_lower_unicode(unsigned int ch) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 159 | { |
| 160 | return (unsigned int) Py_UNICODE_TOLOWER((Py_UNICODE)(ch)); |
| 161 | } |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 162 | #define SRE_UNI_IS_DIGIT(ch) Py_UNICODE_ISDIGIT((Py_UNICODE)(ch)) |
| 163 | #define SRE_UNI_IS_SPACE(ch) Py_UNICODE_ISSPACE((Py_UNICODE)(ch)) |
| 164 | #define SRE_UNI_IS_LINEBREAK(ch) Py_UNICODE_ISLINEBREAK((Py_UNICODE)(ch)) |
Fredrik Lundh | 22d2546 | 2000-07-01 17:50:59 +0000 | [diff] [blame] | 165 | #define SRE_UNI_IS_ALNUM(ch) Py_UNICODE_ISALNUM((Py_UNICODE)(ch)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 166 | #define SRE_UNI_IS_WORD(ch) (SRE_UNI_IS_ALNUM((ch)) || (ch) == '_') |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 167 | #endif |
| 168 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 169 | LOCAL(int) |
| 170 | sre_category(SRE_CODE category, unsigned int ch) |
| 171 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 172 | switch (category) { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 173 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 174 | case SRE_CATEGORY_DIGIT: |
| 175 | return SRE_IS_DIGIT(ch); |
| 176 | case SRE_CATEGORY_NOT_DIGIT: |
| 177 | return !SRE_IS_DIGIT(ch); |
| 178 | case SRE_CATEGORY_SPACE: |
| 179 | return SRE_IS_SPACE(ch); |
| 180 | case SRE_CATEGORY_NOT_SPACE: |
| 181 | return !SRE_IS_SPACE(ch); |
| 182 | case SRE_CATEGORY_WORD: |
| 183 | return SRE_IS_WORD(ch); |
| 184 | case SRE_CATEGORY_NOT_WORD: |
| 185 | return !SRE_IS_WORD(ch); |
| 186 | case SRE_CATEGORY_LINEBREAK: |
| 187 | return SRE_IS_LINEBREAK(ch); |
| 188 | case SRE_CATEGORY_NOT_LINEBREAK: |
| 189 | return !SRE_IS_LINEBREAK(ch); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 190 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 191 | case SRE_CATEGORY_LOC_WORD: |
| 192 | return SRE_LOC_IS_WORD(ch); |
| 193 | case SRE_CATEGORY_LOC_NOT_WORD: |
| 194 | return !SRE_LOC_IS_WORD(ch); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 195 | |
| 196 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 197 | case SRE_CATEGORY_UNI_DIGIT: |
| 198 | return SRE_UNI_IS_DIGIT(ch); |
| 199 | case SRE_CATEGORY_UNI_NOT_DIGIT: |
| 200 | return !SRE_UNI_IS_DIGIT(ch); |
| 201 | case SRE_CATEGORY_UNI_SPACE: |
| 202 | return SRE_UNI_IS_SPACE(ch); |
| 203 | case SRE_CATEGORY_UNI_NOT_SPACE: |
| 204 | return !SRE_UNI_IS_SPACE(ch); |
| 205 | case SRE_CATEGORY_UNI_WORD: |
| 206 | return SRE_UNI_IS_WORD(ch); |
| 207 | case SRE_CATEGORY_UNI_NOT_WORD: |
| 208 | return !SRE_UNI_IS_WORD(ch); |
| 209 | case SRE_CATEGORY_UNI_LINEBREAK: |
| 210 | return SRE_UNI_IS_LINEBREAK(ch); |
| 211 | case SRE_CATEGORY_UNI_NOT_LINEBREAK: |
| 212 | return !SRE_UNI_IS_LINEBREAK(ch); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 213 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 214 | } |
| 215 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | /* helpers */ |
| 219 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 220 | static void |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 221 | mark_fini(SRE_STATE* state) |
| 222 | { |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 223 | if (state->mark_stack) { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 224 | free(state->mark_stack); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 225 | state->mark_stack = NULL; |
| 226 | } |
| 227 | state->mark_stack_size = state->mark_stack_base = 0; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 228 | } |
| 229 | |
| 230 | static int |
| 231 | mark_save(SRE_STATE* state, int lo, int hi) |
| 232 | { |
| 233 | void* stack; |
| 234 | int size; |
| 235 | int minsize, newsize; |
| 236 | |
| 237 | if (hi <= lo) |
| 238 | return 0; |
| 239 | |
| 240 | size = (hi - lo) + 1; |
| 241 | |
| 242 | newsize = state->mark_stack_size; |
| 243 | minsize = state->mark_stack_base + size; |
| 244 | |
| 245 | if (newsize < minsize) { |
| 246 | /* create new stack */ |
| 247 | if (!newsize) { |
| 248 | newsize = 512; |
| 249 | if (newsize < minsize) |
| 250 | newsize = minsize; |
| 251 | TRACE(("allocate stack %d\n", newsize)); |
| 252 | stack = malloc(sizeof(void*) * newsize); |
| 253 | } else { |
| 254 | /* grow the stack */ |
| 255 | while (newsize < minsize) |
| 256 | newsize += newsize; |
| 257 | TRACE(("grow stack to %d\n", newsize)); |
| 258 | stack = realloc(state->mark_stack, sizeof(void*) * newsize); |
| 259 | } |
| 260 | if (!stack) { |
| 261 | mark_fini(state); |
| 262 | return SRE_ERROR_MEMORY; |
| 263 | } |
| 264 | state->mark_stack = stack; |
| 265 | state->mark_stack_size = newsize; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 266 | } |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 267 | |
| 268 | TRACE(("copy %d:%d to %d\n", lo, hi, state->mark_stack_base)); |
| 269 | |
| 270 | memcpy(state->mark_stack + state->mark_stack_base, state->mark + lo, |
| 271 | size * sizeof(void*)); |
| 272 | |
| 273 | state->mark_stack_base += size; |
| 274 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 275 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 276 | } |
| 277 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 278 | static int |
| 279 | mark_restore(SRE_STATE* state, int lo, int hi) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 280 | { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 281 | int size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 282 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 283 | if (hi <= lo) |
| 284 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 285 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 286 | size = (hi - lo) + 1; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 287 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 288 | state->mark_stack_base -= size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 289 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 290 | TRACE(("copy %d:%d from %d\n", lo, hi, state->mark_stack_base)); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 291 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 292 | memcpy(state->mark + lo, state->mark_stack + state->mark_stack_base, |
| 293 | size * sizeof(void*)); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 294 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 295 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 296 | } |
| 297 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 298 | /* generate 8-bit version */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 299 | |
| 300 | #define SRE_CHAR unsigned char |
| 301 | #define SRE_AT sre_at |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 302 | #define SRE_COUNT sre_count |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 303 | #define SRE_MEMBER sre_member |
| 304 | #define SRE_MATCH sre_match |
| 305 | #define SRE_SEARCH sre_search |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 306 | |
| 307 | #if defined(HAVE_UNICODE) |
| 308 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 309 | #define SRE_RECURSIVE |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 310 | #include "_sre.c" |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 311 | #undef SRE_RECURSIVE |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 312 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 313 | #undef SRE_SEARCH |
| 314 | #undef SRE_MATCH |
| 315 | #undef SRE_MEMBER |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 316 | #undef SRE_COUNT |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 317 | #undef SRE_AT |
| 318 | #undef SRE_CHAR |
| 319 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 320 | /* generate 16-bit unicode version */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 321 | |
| 322 | #define SRE_CHAR Py_UNICODE |
| 323 | #define SRE_AT sre_uat |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 324 | #define SRE_COUNT sre_ucount |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 325 | #define SRE_MEMBER sre_umember |
| 326 | #define SRE_MATCH sre_umatch |
| 327 | #define SRE_SEARCH sre_usearch |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 328 | #endif |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 329 | |
| 330 | #endif /* SRE_RECURSIVE */ |
| 331 | |
| 332 | /* -------------------------------------------------------------------- */ |
| 333 | /* String matching engine */ |
| 334 | |
| 335 | /* the following section is compiled twice, with different character |
| 336 | settings */ |
| 337 | |
| 338 | LOCAL(int) |
| 339 | SRE_AT(SRE_STATE* state, SRE_CHAR* ptr, SRE_CODE at) |
| 340 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 341 | /* check if pointer is at given position */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 342 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 343 | int this, that; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 344 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 345 | switch (at) { |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 346 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 347 | case SRE_AT_BEGINNING: |
| 348 | return ((void*) ptr == state->beginning); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 349 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 350 | case SRE_AT_BEGINNING_LINE: |
| 351 | return ((void*) ptr == state->beginning || |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 352 | SRE_IS_LINEBREAK((int) ptr[-1])); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 353 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 354 | case SRE_AT_END: |
Fredrik Lundh | ef34bd2 | 2000-06-30 21:40:20 +0000 | [diff] [blame] | 355 | return (((void*) (ptr+1) == state->end && |
| 356 | SRE_IS_LINEBREAK((int) ptr[0])) || |
| 357 | ((void*) ptr == state->end)); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 358 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 359 | case SRE_AT_END_LINE: |
| 360 | return ((void*) ptr == state->end || |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 361 | SRE_IS_LINEBREAK((int) ptr[0])); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 362 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 363 | case SRE_AT_BOUNDARY: |
| 364 | if (state->beginning == state->end) |
| 365 | return 0; |
| 366 | that = ((void*) ptr > state->beginning) ? |
| 367 | SRE_IS_WORD((int) ptr[-1]) : 0; |
| 368 | this = ((void*) ptr < state->end) ? |
| 369 | SRE_IS_WORD((int) ptr[0]) : 0; |
| 370 | return this != that; |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 371 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 372 | case SRE_AT_NON_BOUNDARY: |
| 373 | if (state->beginning == state->end) |
| 374 | return 0; |
| 375 | that = ((void*) ptr > state->beginning) ? |
| 376 | SRE_IS_WORD((int) ptr[-1]) : 0; |
| 377 | this = ((void*) ptr < state->end) ? |
| 378 | SRE_IS_WORD((int) ptr[0]) : 0; |
| 379 | return this == that; |
| 380 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 381 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 382 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 383 | } |
| 384 | |
| 385 | LOCAL(int) |
Fredrik Lundh | 0640e11 | 2000-06-30 13:55:15 +0000 | [diff] [blame] | 386 | SRE_MEMBER(SRE_CODE* set, SRE_CODE ch) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 387 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 388 | /* check if character is a member of the given set */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 389 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 390 | int ok = 1; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 391 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 392 | for (;;) { |
| 393 | switch (*set++) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 394 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 395 | case SRE_OP_LITERAL: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 396 | /* <LITERAL> <code> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 397 | if (ch == set[0]) |
| 398 | return ok; |
| 399 | set++; |
| 400 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 401 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 402 | case SRE_OP_RANGE: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 403 | /* <RANGE> <lower> <upper> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 404 | if (set[0] <= ch && ch <= set[1]) |
| 405 | return ok; |
| 406 | set += 2; |
| 407 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 408 | |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 409 | case SRE_OP_CHARSET: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 410 | /* <CHARSET> <bitmap> (16 bits per code word) */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 411 | if (ch < 256 && (set[ch >> 4] & (1 << (ch & 15)))) |
| 412 | return ok; |
| 413 | set += 16; |
| 414 | break; |
| 415 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 416 | case SRE_OP_CATEGORY: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 417 | /* <CATEGORY> <code> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 418 | if (sre_category(set[0], (int) ch)) |
| 419 | return ok; |
| 420 | set += 1; |
| 421 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 422 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 423 | case SRE_OP_NEGATE: |
| 424 | ok = !ok; |
| 425 | break; |
| 426 | |
| 427 | case SRE_OP_FAILURE: |
| 428 | return !ok; |
| 429 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 430 | default: |
| 431 | /* internal error -- there's not much we can do about it |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 432 | here, so let's just pretend it didn't match... */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 433 | return 0; |
| 434 | } |
| 435 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 436 | } |
| 437 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 438 | LOCAL(int) SRE_MATCH(SRE_STATE* state, SRE_CODE* pattern, int level); |
| 439 | |
| 440 | LOCAL(int) |
| 441 | SRE_COUNT(SRE_STATE* state, SRE_CODE* pattern, int maxcount, int level) |
| 442 | { |
| 443 | SRE_CODE chr; |
| 444 | SRE_CHAR* ptr = state->ptr; |
| 445 | SRE_CHAR* end = state->end; |
| 446 | int i; |
| 447 | |
| 448 | /* adjust end */ |
| 449 | if (maxcount < end - ptr && maxcount != 65535) |
| 450 | end = ptr + maxcount; |
| 451 | |
| 452 | switch (pattern[0]) { |
| 453 | |
| 454 | case SRE_OP_ANY: |
| 455 | /* repeated dot wildcard. */ |
| 456 | while (ptr < end && !SRE_IS_LINEBREAK(*ptr)) |
| 457 | ptr++; |
| 458 | break; |
| 459 | |
| 460 | case SRE_OP_ANY_ALL: |
| 461 | /* repeated dot wildcare. skip to the end of the target |
| 462 | string, and backtrack from there */ |
| 463 | ptr = end; |
| 464 | break; |
| 465 | |
| 466 | case SRE_OP_LITERAL: |
| 467 | /* repeated literal */ |
| 468 | chr = pattern[1]; |
| 469 | while (ptr < end && (SRE_CODE) *ptr == chr) |
| 470 | ptr++; |
| 471 | break; |
| 472 | |
| 473 | case SRE_OP_LITERAL_IGNORE: |
| 474 | /* repeated literal */ |
| 475 | chr = pattern[1]; |
| 476 | while (ptr < end && (SRE_CODE) state->lower(*ptr) == chr) |
| 477 | ptr++; |
| 478 | break; |
| 479 | |
| 480 | case SRE_OP_NOT_LITERAL: |
| 481 | /* repeated non-literal */ |
| 482 | chr = pattern[1]; |
| 483 | while (ptr < end && (SRE_CODE) *ptr != chr) |
| 484 | ptr++; |
| 485 | break; |
| 486 | |
| 487 | case SRE_OP_NOT_LITERAL_IGNORE: |
| 488 | /* repeated non-literal */ |
| 489 | chr = pattern[1]; |
| 490 | while (ptr < end && (SRE_CODE) state->lower(*ptr) != chr) |
| 491 | ptr++; |
| 492 | break; |
| 493 | |
| 494 | case SRE_OP_IN: |
| 495 | /* repeated set */ |
| 496 | while (ptr < end && SRE_MEMBER(pattern + 2, *ptr)) |
| 497 | ptr++; |
| 498 | break; |
| 499 | |
| 500 | default: |
| 501 | /* repeated single character pattern */ |
| 502 | while ((SRE_CHAR*) state->ptr < end) { |
| 503 | i = SRE_MATCH(state, pattern, level); |
| 504 | if (i < 0) |
| 505 | return i; |
| 506 | if (!i) |
| 507 | break; |
| 508 | } |
| 509 | return (SRE_CHAR*) state->ptr - ptr; |
| 510 | } |
| 511 | |
| 512 | return ptr - (SRE_CHAR*) state->ptr; |
| 513 | } |
| 514 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 515 | LOCAL(int) |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 516 | SRE_MATCH(SRE_STATE* state, SRE_CODE* pattern, int level) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 517 | { |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 518 | /* check if string matches the given pattern. returns <0 for |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 519 | error, 0 for failure, and 1 for success */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 520 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 521 | SRE_CHAR* end = state->end; |
| 522 | SRE_CHAR* ptr = state->ptr; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 523 | int i, count; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 524 | SRE_REPEAT* rp; |
| 525 | int lastmark; |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 526 | SRE_CODE chr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 527 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 528 | SRE_REPEAT rep; /* FIXME: <fl> allocate in STATE instead */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 529 | |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 530 | TRACE(("%8d: enter %d\n", PTR(ptr), level)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 531 | |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame^] | 532 | #if defined(USE_STACKCHECK) |
| 533 | if (level % 10 == 0 && PyOS_CheckStack()) { |
| 534 | return SRE_ERROR_RECURSION_LIMIT; |
| 535 | #endif |
| 536 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 537 | #if defined(USE_RECURSION_LIMIT) |
| 538 | if (level > USE_RECURSION_LIMIT) |
| 539 | return SRE_ERROR_RECURSION_LIMIT; |
| 540 | #endif |
| 541 | |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 542 | if (pattern[0] == SRE_OP_INFO) { |
| 543 | /* optimization info block */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 544 | /* <INFO> <1=skip> <2=flags> <3=min> ... */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 545 | if (pattern[3] && (end - ptr) < pattern[3]) { |
| 546 | TRACE(("reject (got %d chars, need %d)\n", |
| 547 | (end - ptr), pattern[3])); |
| 548 | return 0; |
| 549 | } |
| 550 | pattern += pattern[1] + 1; |
| 551 | } |
| 552 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 553 | for (;;) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 554 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 555 | switch (*pattern++) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 556 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 557 | case SRE_OP_FAILURE: |
| 558 | /* immediate failure */ |
| 559 | TRACE(("%8d: failure\n", PTR(ptr))); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 560 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 561 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 562 | case SRE_OP_SUCCESS: |
| 563 | /* end of pattern */ |
| 564 | TRACE(("%8d: success\n", PTR(ptr))); |
| 565 | state->ptr = ptr; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 566 | return 1; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 567 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 568 | case SRE_OP_AT: |
| 569 | /* match at given position */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 570 | /* <AT> <code> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 571 | TRACE(("%8d: position %d\n", PTR(ptr), *pattern)); |
| 572 | if (!SRE_AT(state, ptr, *pattern)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 573 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 574 | pattern++; |
| 575 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 576 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 577 | case SRE_OP_CATEGORY: |
| 578 | /* match at given category */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 579 | /* <CATEGORY> <code> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 580 | TRACE(("%8d: category %d [category %d]\n", PTR(ptr), |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 581 | *ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 582 | if (ptr >= end || !sre_category(pattern[0], ptr[0])) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 583 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 584 | TRACE(("%8d: category ok\n", PTR(ptr))); |
| 585 | pattern++; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 586 | ptr++; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 587 | break; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 588 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 589 | case SRE_OP_LITERAL: |
| 590 | /* match literal string */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 591 | /* <LITERAL> <code> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 592 | TRACE(("%8d: literal %c\n", PTR(ptr), pattern[0])); |
| 593 | if (ptr >= end || (SRE_CODE) ptr[0] != pattern[0]) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 594 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 595 | pattern++; |
| 596 | ptr++; |
| 597 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 598 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 599 | case SRE_OP_NOT_LITERAL: |
| 600 | /* match anything that is not literal character */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 601 | /* <NOT_LITERAL> <code> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 602 | TRACE(("%8d: literal not %c\n", PTR(ptr), pattern[0])); |
| 603 | if (ptr >= end || (SRE_CODE) ptr[0] == pattern[0]) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 604 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 605 | pattern++; |
| 606 | ptr++; |
| 607 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 608 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 609 | case SRE_OP_ANY: |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 610 | /* match anything (except a newline) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 611 | /* <ANY> */ |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 612 | TRACE(("%8d: anything (except newline)\n", PTR(ptr))); |
| 613 | if (ptr >= end || SRE_IS_LINEBREAK(ptr[0])) |
| 614 | return 0; |
| 615 | ptr++; |
| 616 | break; |
| 617 | |
| 618 | case SRE_OP_ANY_ALL: |
| 619 | /* match anything */ |
| 620 | /* <ANY_ALL> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 621 | TRACE(("%8d: anything\n", PTR(ptr))); |
| 622 | if (ptr >= end) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 623 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 624 | ptr++; |
| 625 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 626 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 627 | case SRE_OP_IN: |
| 628 | /* match set member (or non_member) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 629 | /* <IN> <skip> <set> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 630 | TRACE(("%8d: set %c\n", PTR(ptr), *ptr)); |
| 631 | if (ptr >= end || !SRE_MEMBER(pattern + 1, *ptr)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 632 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 633 | pattern += pattern[0]; |
| 634 | ptr++; |
| 635 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 636 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 637 | case SRE_OP_GROUPREF: |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 638 | /* match backreference */ |
| 639 | TRACE(("%8d: group %d\n", PTR(ptr), pattern[0])); |
| 640 | i = pattern[0]; |
| 641 | { |
| 642 | SRE_CHAR* p = (SRE_CHAR*) state->mark[i+i]; |
| 643 | SRE_CHAR* e = (SRE_CHAR*) state->mark[i+i+1]; |
| 644 | if (!p || !e || e < p) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 645 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 646 | while (p < e) { |
| 647 | if (ptr >= end || *ptr != *p) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 648 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 649 | p++; ptr++; |
| 650 | } |
| 651 | } |
| 652 | pattern++; |
| 653 | break; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 654 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 655 | case SRE_OP_GROUPREF_IGNORE: |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 656 | /* match backreference */ |
| 657 | TRACE(("%8d: group ignore %d\n", PTR(ptr), pattern[0])); |
| 658 | i = pattern[0]; |
| 659 | { |
| 660 | SRE_CHAR* p = (SRE_CHAR*) state->mark[i+i]; |
| 661 | SRE_CHAR* e = (SRE_CHAR*) state->mark[i+i+1]; |
| 662 | if (!p || !e || e < p) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 663 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 664 | while (p < e) { |
| 665 | if (ptr >= end || |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 666 | state->lower(*ptr) != state->lower(*p)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 667 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 668 | p++; ptr++; |
| 669 | } |
| 670 | } |
| 671 | pattern++; |
| 672 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 673 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 674 | case SRE_OP_LITERAL_IGNORE: |
| 675 | TRACE(("%8d: literal lower(%c)\n", PTR(ptr), pattern[0])); |
| 676 | if (ptr >= end || |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 677 | state->lower(*ptr) != state->lower(*pattern)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 678 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 679 | pattern++; |
| 680 | ptr++; |
| 681 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 682 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 683 | case SRE_OP_NOT_LITERAL_IGNORE: |
| 684 | TRACE(("%8d: literal not lower(%c)\n", PTR(ptr), pattern[0])); |
| 685 | if (ptr >= end || |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 686 | state->lower(*ptr) == state->lower(*pattern)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 687 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 688 | pattern++; |
| 689 | ptr++; |
| 690 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 691 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 692 | case SRE_OP_IN_IGNORE: |
| 693 | TRACE(("%8d: set lower(%c)\n", PTR(ptr), *ptr)); |
| 694 | if (ptr >= end |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 695 | || !SRE_MEMBER(pattern + 1, (SRE_CODE) state->lower(*ptr))) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 696 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 697 | pattern += pattern[0]; |
| 698 | ptr++; |
| 699 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 700 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 701 | case SRE_OP_MARK: |
| 702 | /* set mark */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 703 | /* <MARK> <gid> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 704 | TRACE(("%8d: set mark %d\n", PTR(ptr), pattern[0])); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 705 | i = pattern[0]; |
| 706 | if (i & 1) |
| 707 | state->lastindex = i/2 + 1; |
| 708 | if (i > state->lastmark) |
| 709 | state->lastmark = i; |
| 710 | state->mark[i] = ptr; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 711 | pattern++; |
| 712 | break; |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 713 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 714 | case SRE_OP_JUMP: |
| 715 | case SRE_OP_INFO: |
| 716 | /* jump forward */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 717 | /* <JUMP> <offset> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 718 | TRACE(("%8d: jump +%d\n", PTR(ptr), pattern[0])); |
| 719 | pattern += pattern[0]; |
| 720 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 721 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 722 | case SRE_OP_ASSERT: |
| 723 | /* assert subpattern */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 724 | /* <ASSERT> <skip> <back> <pattern> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 725 | TRACE(("%8d: assert subpattern %d\n", PTR(ptr), pattern[1])); |
| 726 | state->ptr = ptr - pattern[1]; |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 727 | if (state->ptr < state->beginning) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 728 | return 0; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 729 | i = SRE_MATCH(state, pattern + 2, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 730 | if (i <= 0) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 731 | return i; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 732 | if (pattern[1] > 0 && state->ptr != ptr) |
| 733 | return SRE_ERROR_STATE; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 734 | pattern += pattern[0]; |
| 735 | break; |
Fredrik Lundh | 43b3b49 | 2000-06-30 10:41:31 +0000 | [diff] [blame] | 736 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 737 | case SRE_OP_ASSERT_NOT: |
| 738 | /* assert not subpattern */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 739 | /* <ASSERT_NOT> <skip> <back> <pattern> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 740 | TRACE(("%8d: assert not subpattern %d\n", PTR(ptr), pattern[1])); |
| 741 | state->ptr = ptr - pattern[1]; |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 742 | if (state->ptr < state->beginning) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 743 | return 0; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 744 | i = SRE_MATCH(state, pattern + 2, level + 1); |
Fredrik Lundh | 43b3b49 | 2000-06-30 10:41:31 +0000 | [diff] [blame] | 745 | if (i < 0) |
| 746 | return i; |
| 747 | if (i) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 748 | return 0; |
| 749 | if (pattern[1] > 0 && state->ptr != ptr) |
| 750 | return SRE_ERROR_STATE; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 751 | pattern += pattern[0]; |
| 752 | break; |
| 753 | |
| 754 | case SRE_OP_BRANCH: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 755 | /* alternation */ |
| 756 | /* <BRANCH> <0=skip> code <JUMP> ... <NULL> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 757 | TRACE(("%8d: branch\n", PTR(ptr))); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 758 | lastmark = state->lastmark; |
| 759 | while (pattern[0]) { |
| 760 | SRE_CODE* code = pattern+1; |
| 761 | TRACE(("%8d: try branch\n", PTR(ptr))); |
| 762 | switch (code[0]) { |
| 763 | case SRE_OP_IN: |
| 764 | if (ptr >= end || !SRE_MEMBER(code + 2, ptr[0])) |
| 765 | break; |
| 766 | code += code[1] + 1; |
| 767 | state->ptr = ptr + 1; |
| 768 | goto branch; |
| 769 | case SRE_OP_LITERAL: |
| 770 | if (ptr >= end || (SRE_CODE) ptr[0] != code[1]) |
| 771 | break; |
| 772 | code += 2; |
| 773 | state->ptr = ptr + 1; |
| 774 | goto branch; |
| 775 | default: |
| 776 | state->ptr = ptr; |
| 777 | branch: |
| 778 | i = SRE_MATCH(state, code, level + 1); |
| 779 | if (i) |
| 780 | return i; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 781 | while (state->lastmark > lastmark) |
| 782 | state->mark[state->lastmark--] = NULL; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 783 | } |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 784 | pattern += pattern[0]; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 785 | } |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 786 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 787 | |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 788 | case SRE_OP_REPEAT_ONE: |
| 789 | /* match repeated sequence (maximizing regexp) */ |
| 790 | |
| 791 | /* this operator only works if the repeated item is |
| 792 | exactly one character wide, and we're not already |
| 793 | collecting backtracking points. for other cases, |
| 794 | use the MAX_REPEAT operator instead */ |
| 795 | |
| 796 | /* <REPEAT_ONE> <skip> <1=min> <2=max> item <SUCCESS> tail */ |
| 797 | |
| 798 | TRACE(("%8d: max repeat one {%d,%d}\n", PTR(ptr), |
| 799 | pattern[1], pattern[2])); |
| 800 | |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 801 | if (ptr + pattern[1] > end) |
| 802 | return 0; /* cannot match */ |
| 803 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 804 | state->ptr = ptr; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 805 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 806 | count = SRE_COUNT(state, pattern + 3, pattern[2], level + 1); |
| 807 | if (count < 0) |
| 808 | return count; |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 809 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 810 | ptr += count; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 811 | |
| 812 | /* when we arrive here, count contains the number of |
| 813 | matches, and ptr points to the tail of the target |
| 814 | string. check if the rest of the pattern matches, |
| 815 | and backtrack if not. */ |
| 816 | |
| 817 | TRACE(("%8d: repeat %d found\n", PTR(ptr), count)); |
| 818 | |
| 819 | if (count < (int) pattern[1]) |
| 820 | return 0; |
| 821 | |
| 822 | if (pattern[pattern[0]] == SRE_OP_SUCCESS) { |
| 823 | /* tail is empty. we're finished */ |
| 824 | TRACE(("%8d: tail is empty\n", PTR(ptr))); |
| 825 | state->ptr = ptr; |
| 826 | return 1; |
| 827 | |
| 828 | } else if (pattern[pattern[0]] == SRE_OP_LITERAL) { |
| 829 | /* tail starts with a literal. skip positions where |
| 830 | the rest of the pattern cannot possibly match */ |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 831 | chr = pattern[pattern[0]+1]; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 832 | TRACE(("%8d: tail is literal %d\n", PTR(ptr), chr)); |
| 833 | for (;;) { |
| 834 | TRACE(("%8d: scan for tail match\n", PTR(ptr))); |
| 835 | while (count >= (int) pattern[1] && |
| 836 | (ptr >= end || *ptr != chr)) { |
| 837 | ptr--; |
| 838 | count--; |
| 839 | } |
| 840 | TRACE(("%8d: check tail\n", PTR(ptr))); |
| 841 | if (count < (int) pattern[1]) |
| 842 | break; |
| 843 | state->ptr = ptr; |
| 844 | i = SRE_MATCH(state, pattern + pattern[0], level + 1); |
| 845 | if (i > 0) { |
| 846 | TRACE(("%8d: repeat %d picked\n", PTR(ptr), count)); |
| 847 | return 1; |
| 848 | } |
| 849 | ptr--; |
| 850 | count--; |
| 851 | } |
| 852 | |
| 853 | } else { |
| 854 | /* general case */ |
| 855 | TRACE(("%8d: tail is pattern\n", PTR(ptr))); |
| 856 | while (count >= (int) pattern[1]) { |
| 857 | state->ptr = ptr; |
| 858 | i = SRE_MATCH(state, pattern + pattern[0], level + 1); |
| 859 | if (i < 0) |
| 860 | return i; |
| 861 | if (i) { |
| 862 | TRACE(("%8d: repeat %d picked\n", PTR(ptr), count)); |
| 863 | return 1; |
| 864 | } |
| 865 | ptr--; |
| 866 | count--; |
| 867 | } |
| 868 | } |
| 869 | return 0; |
| 870 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 871 | case SRE_OP_REPEAT: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 872 | /* create repeat context. all the hard work is done |
| 873 | by the UNTIL operator */ |
| 874 | /* <REPEAT> <skip> <1=min> <2=max> item <UNTIL> tail */ |
| 875 | TRACE(("%8d: repeat {%d,%d}\n", PTR(ptr), |
| 876 | pattern[1], pattern[2])); |
| 877 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 878 | rep.count = -1; |
| 879 | rep.pattern = pattern; |
| 880 | |
| 881 | /* install new repeat context */ |
| 882 | rep.prev = state->repeat; |
| 883 | state->repeat = &rep; |
| 884 | |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 885 | state->ptr = ptr; |
| 886 | i = SRE_MATCH(state, pattern + pattern[0], level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 887 | |
| 888 | state->repeat = rep.prev; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 889 | |
| 890 | return i; |
| 891 | |
| 892 | case SRE_OP_MAX_UNTIL: |
| 893 | /* maximizing repeat */ |
| 894 | /* <REPEAT> <skip> <1=min> <2=max> item <MAX_UNTIL> tail */ |
| 895 | |
| 896 | /* FIXME: we probably need to deal with zero-width |
| 897 | matches in here... */ |
| 898 | |
| 899 | rp = state->repeat; |
| 900 | if (!rp) |
| 901 | return SRE_ERROR_STATE; |
| 902 | |
| 903 | state->ptr = ptr; |
| 904 | |
| 905 | count = rp->count + 1; |
| 906 | |
| 907 | TRACE(("%8d: max until %d\n", PTR(ptr), count)); |
| 908 | |
| 909 | if (count < rp->pattern[1]) { |
| 910 | /* not enough matches */ |
| 911 | TRACE(("%8d: match item (required)\n", PTR(ptr))); |
| 912 | rp->count = count; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 913 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 914 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 915 | if (i) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 916 | return i; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 917 | rp->count = count - 1; |
| 918 | state->ptr = ptr; |
| 919 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 920 | } |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 921 | |
| 922 | if (count < rp->pattern[2] || rp->pattern[2] == 65535) { |
| 923 | TRACE(("%8d: match item (optional)\n", PTR(ptr))); |
| 924 | /* we may have enough matches, but if we can |
| 925 | match another item, do so */ |
| 926 | rp->count = count; |
| 927 | lastmark = state->lastmark; |
| 928 | mark_save(state, 0, lastmark); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 929 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 930 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 931 | if (i) |
| 932 | return i; |
| 933 | mark_restore(state, 0, lastmark); |
| 934 | rp->count = count - 1; |
| 935 | state->ptr = ptr; |
| 936 | } |
| 937 | |
| 938 | /* cannot match more repeated items here. make sure the |
| 939 | tail matches */ |
| 940 | TRACE(("%8d: match tail\n", PTR(ptr))); |
| 941 | state->repeat = rp->prev; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 942 | i = SRE_MATCH(state, pattern, level + 1); |
| 943 | if (i) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 944 | return i; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 945 | state->repeat = rp; |
| 946 | return 0; |
| 947 | |
| 948 | case SRE_OP_MIN_UNTIL: |
| 949 | /* minimizing repeat */ |
| 950 | /* <REPEAT> <skip> <1=min> <2=max> item <MIN_UNTIL> tail */ |
| 951 | |
| 952 | rp = state->repeat; |
| 953 | if (!rp) |
| 954 | return SRE_ERROR_STATE; |
| 955 | |
| 956 | count = rp->count + 1; |
| 957 | |
| 958 | TRACE(("%8d: min until %d\n", PTR(ptr), count)); |
| 959 | |
| 960 | state->ptr = ptr; |
| 961 | |
| 962 | if (count < rp->pattern[1]) { |
| 963 | /* not enough matches */ |
| 964 | TRACE(("%8d: match item (required)\n", PTR(ptr))); |
| 965 | rp->count = count; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 966 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 967 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 968 | if (i) |
| 969 | return i; |
| 970 | rp->count = count-1; |
| 971 | state->ptr = ptr; |
| 972 | return 0; |
| 973 | } |
| 974 | |
| 975 | /* see if the tail matches */ |
| 976 | TRACE(("%8d: match tail\n", PTR(ptr))); |
| 977 | state->repeat = rp->prev; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 978 | i = SRE_MATCH(state, pattern, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 979 | if (i) { |
| 980 | /* free(rp); */ |
| 981 | return i; |
| 982 | } |
| 983 | state->repeat = rp; |
| 984 | |
| 985 | if (count >= rp->pattern[2] && rp->pattern[2] != 65535) |
| 986 | return 0; |
| 987 | |
| 988 | TRACE(("%8d: match item (optional)\n", PTR(ptr))); |
| 989 | rp->count = count; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 990 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 991 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 992 | if (i) |
| 993 | return i; |
| 994 | rp->count = count - 1; |
| 995 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 996 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 997 | default: |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 998 | TRACE(("%8d: unknown opcode %d\n", PTR(ptr), pattern[-1])); |
| 999 | return SRE_ERROR_ILLEGAL; |
| 1000 | } |
| 1001 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1002 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1003 | /* shouldn't end up here */ |
| 1004 | return SRE_ERROR_ILLEGAL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1005 | } |
| 1006 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1007 | LOCAL(int) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1008 | SRE_SEARCH(SRE_STATE* state, SRE_CODE* pattern) |
| 1009 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1010 | SRE_CHAR* ptr = state->start; |
| 1011 | SRE_CHAR* end = state->end; |
| 1012 | int status = 0; |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 1013 | int prefix_len = 0; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1014 | SRE_CODE* prefix = NULL; |
| 1015 | SRE_CODE* charset = NULL; |
| 1016 | SRE_CODE* overlap = NULL; |
| 1017 | int flags = 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1018 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1019 | if (pattern[0] == SRE_OP_INFO) { |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1020 | /* optimization info block */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1021 | /* <INFO> <1=skip> <2=flags> <3=min> <4=max> <5=prefix info> */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1022 | |
| 1023 | flags = pattern[2]; |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1024 | |
| 1025 | if (pattern[3] > 0) { |
| 1026 | /* adjust end point (but make sure we leave at least one |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1027 | character in there, so literal search will work) */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1028 | end -= pattern[3]-1; |
| 1029 | if (end <= ptr) |
| 1030 | end = ptr+1; |
| 1031 | } |
| 1032 | |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1033 | if (flags & SRE_INFO_PREFIX) { |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 1034 | /* pattern starts with a known prefix */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1035 | prefix_len = pattern[5]; |
| 1036 | prefix = pattern + 6; |
| 1037 | overlap = prefix + prefix_len - 1; |
| 1038 | } else if (flags & SRE_INFO_CHARSET) |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 1039 | /* pattern starts with a character from a known set */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1040 | charset = pattern + 5; |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1041 | |
| 1042 | pattern += 1 + pattern[1]; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1043 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1044 | |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1045 | #if defined(USE_FAST_SEARCH) |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 1046 | if (prefix_len > 1) { |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1047 | /* pattern starts with a known prefix. use the overlap |
| 1048 | table to skip forward as fast as we possibly can */ |
| 1049 | int i = 0; |
| 1050 | end = state->end; |
| 1051 | while (ptr < end) { |
| 1052 | for (;;) { |
Fredrik Lundh | 0640e11 | 2000-06-30 13:55:15 +0000 | [diff] [blame] | 1053 | if ((SRE_CODE) ptr[0] != prefix[i]) { |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1054 | if (!i) |
| 1055 | break; |
| 1056 | else |
| 1057 | i = overlap[i]; |
| 1058 | } else { |
| 1059 | if (++i == prefix_len) { |
| 1060 | /* found a potential match */ |
| 1061 | TRACE(("%8d: === SEARCH === hit\n", PTR(ptr))); |
| 1062 | state->start = ptr - prefix_len + 1; |
| 1063 | state->ptr = ptr + 1; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1064 | if (flags & SRE_INFO_LITERAL) |
| 1065 | return 1; /* we got all of it */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1066 | status = SRE_MATCH(state, pattern + 2*prefix_len, 1); |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1067 | if (status != 0) |
| 1068 | return status; |
| 1069 | /* close but no cigar -- try again */ |
| 1070 | i = overlap[i]; |
| 1071 | } |
| 1072 | break; |
| 1073 | } |
| 1074 | |
| 1075 | } |
| 1076 | ptr++; |
| 1077 | } |
| 1078 | return 0; |
| 1079 | } |
| 1080 | #endif |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 1081 | |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1082 | if (pattern[0] == SRE_OP_LITERAL) { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1083 | /* pattern starts with a literal character. this is used |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1084 | for short prefixes, and if fast search is disabled */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1085 | SRE_CODE chr = pattern[1]; |
| 1086 | for (;;) { |
| 1087 | while (ptr < end && (SRE_CODE) ptr[0] != chr) |
| 1088 | ptr++; |
| 1089 | if (ptr == end) |
| 1090 | return 0; |
| 1091 | TRACE(("%8d: === SEARCH === literal\n", PTR(ptr))); |
| 1092 | state->start = ptr; |
| 1093 | state->ptr = ++ptr; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1094 | status = SRE_MATCH(state, pattern + 2, 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1095 | if (status != 0) |
| 1096 | break; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1097 | } |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1098 | } else if (charset) { |
| 1099 | /* pattern starts with a character from a known set */ |
| 1100 | for (;;) { |
| 1101 | while (ptr < end && !SRE_MEMBER(charset, ptr[0])) |
| 1102 | ptr++; |
| 1103 | if (ptr == end) |
| 1104 | return 0; |
| 1105 | TRACE(("%8d: === SEARCH === charset\n", PTR(ptr))); |
| 1106 | state->start = ptr; |
| 1107 | state->ptr = ptr; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1108 | status = SRE_MATCH(state, pattern, 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1109 | if (status != 0) |
| 1110 | break; |
| 1111 | } |
| 1112 | } else |
| 1113 | /* general case */ |
| 1114 | while (ptr <= end) { |
| 1115 | TRACE(("%8d: === SEARCH ===\n", PTR(ptr))); |
| 1116 | state->start = state->ptr = ptr++; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1117 | status = SRE_MATCH(state, pattern, 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1118 | if (status != 0) |
| 1119 | break; |
| 1120 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1121 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1122 | return status; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1123 | } |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1124 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1125 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1126 | #if !defined(SRE_RECURSIVE) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1127 | |
| 1128 | /* -------------------------------------------------------------------- */ |
| 1129 | /* factories and destructors */ |
| 1130 | |
| 1131 | /* see sre.h for object declarations */ |
| 1132 | |
| 1133 | staticforward PyTypeObject Pattern_Type; |
| 1134 | staticforward PyTypeObject Match_Type; |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 1135 | staticforward PyTypeObject Scanner_Type; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1136 | |
| 1137 | static PyObject * |
| 1138 | _compile(PyObject* self_, PyObject* args) |
| 1139 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1140 | /* "compile" pattern descriptor to pattern object */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1141 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1142 | PatternObject* self; |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1143 | int i, n; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1144 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1145 | PyObject* pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1146 | int flags = 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1147 | PyObject* code; |
| 1148 | int groups = 0; |
| 1149 | PyObject* groupindex = NULL; |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 1150 | PyObject* indexgroup = NULL; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1151 | if (!PyArg_ParseTuple(args, "OiO|iOO", &pattern, &flags, &code, |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 1152 | &groups, &groupindex, &indexgroup)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1153 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1154 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1155 | code = PySequence_Fast(code, "code argument must be a sequence"); |
| 1156 | if (!code) |
| 1157 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1158 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1159 | #if PY_VERSION_HEX >= 0x01060000 |
Jeremy Hylton | 03657cf | 2000-07-12 13:05:33 +0000 | [diff] [blame] | 1160 | n = PySequence_Size(code); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1161 | #else |
| 1162 | n = PySequence_Length(code); |
| 1163 | #endif |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1164 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1165 | self = PyObject_NEW_VAR(PatternObject, &Pattern_Type, 100*n); |
| 1166 | if (!self) { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1167 | Py_DECREF(code); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1168 | return NULL; |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1169 | } |
| 1170 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1171 | for (i = 0; i < n; i++) { |
| 1172 | PyObject *o = PySequence_Fast_GET_ITEM(code, i); |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1173 | self->code[i] = (SRE_CODE) PyInt_AsLong(o); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1174 | } |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1175 | |
| 1176 | Py_DECREF(code); |
| 1177 | |
| 1178 | if (PyErr_Occurred()) |
| 1179 | return NULL; |
| 1180 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1181 | Py_INCREF(pattern); |
| 1182 | self->pattern = pattern; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1183 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1184 | self->flags = flags; |
| 1185 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1186 | self->groups = groups; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1187 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1188 | Py_XINCREF(groupindex); |
| 1189 | self->groupindex = groupindex; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1190 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1191 | Py_XINCREF(indexgroup); |
| 1192 | self->indexgroup = indexgroup; |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 1193 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1194 | return (PyObject*) self; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1195 | } |
| 1196 | |
| 1197 | static PyObject * |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1198 | sre_codesize(PyObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1199 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1200 | return Py_BuildValue("i", sizeof(SRE_CODE)); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1201 | } |
| 1202 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1203 | static PyObject * |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1204 | sre_getlower(PyObject* self, PyObject* args) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1205 | { |
| 1206 | int character, flags; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1207 | if (!PyArg_ParseTuple(args, "ii", &character, &flags)) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1208 | return NULL; |
| 1209 | if (flags & SRE_FLAG_LOCALE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1210 | return Py_BuildValue("i", sre_lower_locale(character)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1211 | #if defined(HAVE_UNICODE) |
| 1212 | if (flags & SRE_FLAG_UNICODE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1213 | return Py_BuildValue("i", sre_lower_unicode(character)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1214 | #endif |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1215 | return Py_BuildValue("i", sre_lower(character)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1216 | } |
| 1217 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1218 | LOCAL(void) |
| 1219 | state_reset(SRE_STATE* state) |
| 1220 | { |
| 1221 | int i; |
| 1222 | |
| 1223 | state->lastmark = 0; |
| 1224 | |
| 1225 | /* FIXME: dynamic! */ |
| 1226 | for (i = 0; i < SRE_MARK_SIZE; i++) |
| 1227 | state->mark[i] = NULL; |
| 1228 | |
| 1229 | state->lastindex = -1; |
| 1230 | |
| 1231 | state->repeat = NULL; |
| 1232 | |
| 1233 | mark_fini(state); |
| 1234 | } |
| 1235 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1236 | LOCAL(PyObject*) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1237 | state_init(SRE_STATE* state, PatternObject* pattern, PyObject* string, |
| 1238 | int start, int end) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1239 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1240 | /* prepare state object */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1241 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1242 | PyBufferProcs *buffer; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1243 | int size, bytes; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1244 | void* ptr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1245 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1246 | memset(state, 0, sizeof(SRE_STATE)); |
| 1247 | |
| 1248 | state->lastindex = -1; |
| 1249 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1250 | /* get pointer to string buffer */ |
| 1251 | buffer = string->ob_type->tp_as_buffer; |
| 1252 | if (!buffer || !buffer->bf_getreadbuffer || !buffer->bf_getsegcount || |
| 1253 | buffer->bf_getsegcount(string, NULL) != 1) { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1254 | PyErr_SetString(PyExc_TypeError, "expected string or buffer"); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1255 | return NULL; |
| 1256 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1257 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1258 | /* determine buffer size */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1259 | bytes = buffer->bf_getreadbuffer(string, 0, &ptr); |
| 1260 | if (bytes < 0) { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1261 | PyErr_SetString(PyExc_TypeError, "buffer has negative size"); |
| 1262 | return NULL; |
| 1263 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1264 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1265 | /* determine character size */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1266 | |
| 1267 | #if PY_VERSION_HEX >= 0x01060000 |
| 1268 | size = PyObject_Size(string); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1269 | #else |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1270 | size = PyObject_Length(string); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1271 | #endif |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1272 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1273 | if (PyString_Check(string) || bytes == size) |
| 1274 | state->charsize = 1; |
| 1275 | #if defined(HAVE_UNICODE) |
| 1276 | else if (bytes == (int) (size * sizeof(Py_UNICODE))) |
| 1277 | state->charsize = sizeof(Py_UNICODE); |
| 1278 | #endif |
| 1279 | else { |
| 1280 | PyErr_SetString(PyExc_TypeError, "buffer size mismatch"); |
| 1281 | return NULL; |
| 1282 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1283 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1284 | /* adjust boundaries */ |
| 1285 | if (start < 0) |
| 1286 | start = 0; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1287 | else if (start > size) |
| 1288 | start = size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1289 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1290 | if (end < 0) |
| 1291 | end = 0; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1292 | else if (end > size) |
| 1293 | end = size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1294 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1295 | state->beginning = ptr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1296 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1297 | state->start = (void*) ((char*) ptr + start * state->charsize); |
| 1298 | state->end = (void*) ((char*) ptr + end * state->charsize); |
| 1299 | |
| 1300 | Py_INCREF(string); |
| 1301 | state->string = string; |
| 1302 | state->pos = start; |
| 1303 | state->endpos = end; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1304 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1305 | if (pattern->flags & SRE_FLAG_LOCALE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1306 | state->lower = sre_lower_locale; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1307 | #if defined(HAVE_UNICODE) |
| 1308 | else if (pattern->flags & SRE_FLAG_UNICODE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1309 | state->lower = sre_lower_unicode; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1310 | #endif |
| 1311 | else |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1312 | state->lower = sre_lower; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1313 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1314 | return string; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1315 | } |
| 1316 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1317 | LOCAL(void) |
| 1318 | state_fini(SRE_STATE* state) |
| 1319 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1320 | Py_XDECREF(state->string); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1321 | mark_fini(state); |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1322 | } |
| 1323 | |
| 1324 | LOCAL(PyObject*) |
| 1325 | state_getslice(SRE_STATE* state, int index, PyObject* string) |
| 1326 | { |
| 1327 | index = (index - 1) * 2; |
| 1328 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1329 | if (string == Py_None || !state->mark[index] || !state->mark[index+1]) { |
| 1330 | Py_INCREF(Py_None); |
| 1331 | return Py_None; |
| 1332 | } |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1333 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1334 | return PySequence_GetSlice( |
| 1335 | string, |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1336 | ((char*)state->mark[index] - (char*)state->beginning) / |
| 1337 | state->charsize, |
| 1338 | ((char*)state->mark[index+1] - (char*)state->beginning) / |
| 1339 | state->charsize |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1340 | ); |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1341 | } |
| 1342 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1343 | static void |
| 1344 | pattern_error(int status) |
| 1345 | { |
| 1346 | switch (status) { |
| 1347 | case SRE_ERROR_RECURSION_LIMIT: |
| 1348 | PyErr_SetString( |
| 1349 | PyExc_RuntimeError, |
| 1350 | "maximum recursion limit exceeded" |
| 1351 | ); |
| 1352 | break; |
| 1353 | case SRE_ERROR_MEMORY: |
| 1354 | PyErr_NoMemory(); |
| 1355 | break; |
| 1356 | default: |
| 1357 | /* other error codes indicate compiler/engine bugs */ |
| 1358 | PyErr_SetString( |
| 1359 | PyExc_RuntimeError, |
| 1360 | "internal error in regular expression engine" |
| 1361 | ); |
| 1362 | } |
| 1363 | } |
| 1364 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1365 | static PyObject* |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1366 | pattern_new_match(PatternObject* pattern, SRE_STATE* state, int status) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1367 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1368 | /* create match object (from state object) */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1369 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1370 | MatchObject* match; |
| 1371 | int i, j; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1372 | char* base; |
| 1373 | int n; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1374 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1375 | if (status > 0) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1376 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1377 | /* create match object (with room for extra group marks) */ |
| 1378 | match = PyObject_NEW_VAR(MatchObject, &Match_Type, |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1379 | 2*(pattern->groups+1)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1380 | if (!match) |
| 1381 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1382 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1383 | Py_INCREF(pattern); |
| 1384 | match->pattern = pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1385 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1386 | Py_INCREF(state->string); |
| 1387 | match->string = state->string; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1388 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1389 | match->regs = NULL; |
| 1390 | match->groups = pattern->groups+1; |
| 1391 | |
| 1392 | /* fill in group slices */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1393 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1394 | base = (char*) state->beginning; |
| 1395 | n = state->charsize; |
| 1396 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1397 | match->mark[0] = ((char*) state->start - base) / n; |
| 1398 | match->mark[1] = ((char*) state->ptr - base) / n; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1399 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1400 | for (i = j = 0; i < pattern->groups; i++, j+=2) |
| 1401 | if (j+1 <= state->lastmark && state->mark[j] && state->mark[j+1]) { |
| 1402 | match->mark[j+2] = ((char*) state->mark[j] - base) / n; |
| 1403 | match->mark[j+3] = ((char*) state->mark[j+1] - base) / n; |
| 1404 | } else |
| 1405 | match->mark[j+2] = match->mark[j+3] = -1; /* undefined */ |
| 1406 | |
| 1407 | match->pos = state->pos; |
| 1408 | match->endpos = state->endpos; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1409 | |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1410 | match->lastindex = state->lastindex; |
| 1411 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1412 | return (PyObject*) match; |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 1413 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1414 | } else if (status == 0) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1415 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1416 | /* no match */ |
| 1417 | Py_INCREF(Py_None); |
| 1418 | return Py_None; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1419 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1420 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1421 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1422 | /* internal error */ |
| 1423 | pattern_error(status); |
| 1424 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1425 | } |
| 1426 | |
| 1427 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 1428 | pattern_scanner(PatternObject* pattern, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1429 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1430 | /* create search state object */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1431 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1432 | ScannerObject* self; |
| 1433 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1434 | PyObject* string; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1435 | int start = 0; |
| 1436 | int end = INT_MAX; |
| 1437 | if (!PyArg_ParseTuple(args, "O|ii:scanner", &string, &start, &end)) |
| 1438 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1439 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1440 | /* create scanner object */ |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 1441 | self = PyObject_NEW(ScannerObject, &Scanner_Type); |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1442 | if (!self) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1443 | return NULL; |
| 1444 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1445 | string = state_init(&self->state, pattern, string, start, end); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1446 | if (!string) { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1447 | PyObject_Del(self); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1448 | return NULL; |
| 1449 | } |
| 1450 | |
| 1451 | Py_INCREF(pattern); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1452 | self->pattern = (PyObject*) pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1453 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1454 | return (PyObject*) self; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1455 | } |
| 1456 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1457 | static void |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1458 | pattern_dealloc(PatternObject* self) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1459 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1460 | Py_XDECREF(self->pattern); |
| 1461 | Py_XDECREF(self->groupindex); |
| 1462 | PyObject_DEL(self); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1463 | } |
| 1464 | |
| 1465 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1466 | pattern_match(PatternObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1467 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1468 | SRE_STATE state; |
| 1469 | int status; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1470 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1471 | PyObject* string; |
| 1472 | int start = 0; |
| 1473 | int end = INT_MAX; |
| 1474 | if (!PyArg_ParseTuple(args, "O|ii:match", &string, &start, &end)) |
| 1475 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1476 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1477 | string = state_init(&state, self, string, start, end); |
| 1478 | if (!string) |
| 1479 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1480 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1481 | state.ptr = state.start; |
| 1482 | |
| 1483 | if (state.charsize == 1) { |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1484 | status = sre_match(&state, PatternObject_GetCode(self), 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1485 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1486 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1487 | status = sre_umatch(&state, PatternObject_GetCode(self), 1); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1488 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1489 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1490 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1491 | state_fini(&state); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1492 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1493 | return pattern_new_match(self, &state, status); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1494 | } |
| 1495 | |
| 1496 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1497 | pattern_search(PatternObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1498 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1499 | SRE_STATE state; |
| 1500 | int status; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1501 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1502 | PyObject* string; |
| 1503 | int start = 0; |
| 1504 | int end = INT_MAX; |
| 1505 | if (!PyArg_ParseTuple(args, "O|ii:search", &string, &start, &end)) |
| 1506 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1507 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1508 | string = state_init(&state, self, string, start, end); |
| 1509 | if (!string) |
| 1510 | return NULL; |
| 1511 | |
| 1512 | if (state.charsize == 1) { |
| 1513 | status = sre_search(&state, PatternObject_GetCode(self)); |
| 1514 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1515 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1516 | status = sre_usearch(&state, PatternObject_GetCode(self)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1517 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1518 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1519 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1520 | state_fini(&state); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1521 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1522 | return pattern_new_match(self, &state, status); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1523 | } |
| 1524 | |
| 1525 | static PyObject* |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1526 | call(char* function, PyObject* args) |
| 1527 | { |
| 1528 | PyObject* name; |
| 1529 | PyObject* module; |
| 1530 | PyObject* func; |
| 1531 | PyObject* result; |
| 1532 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1533 | name = PyString_FromString(MODULE); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1534 | if (!name) |
| 1535 | return NULL; |
| 1536 | module = PyImport_Import(name); |
| 1537 | Py_DECREF(name); |
| 1538 | if (!module) |
| 1539 | return NULL; |
| 1540 | func = PyObject_GetAttrString(module, function); |
| 1541 | Py_DECREF(module); |
| 1542 | if (!func) |
| 1543 | return NULL; |
| 1544 | result = PyObject_CallObject(func, args); |
| 1545 | Py_DECREF(func); |
| 1546 | Py_DECREF(args); |
| 1547 | return result; |
| 1548 | } |
| 1549 | |
| 1550 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1551 | pattern_sub(PatternObject* self, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1552 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1553 | PyObject* template; |
| 1554 | PyObject* string; |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 1555 | PyObject* count = Py_False; /* zero */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1556 | if (!PyArg_ParseTuple(args, "OO|O:sub", &template, &string, &count)) |
| 1557 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1558 | |
| 1559 | /* delegate to Python code */ |
| 1560 | return call("_sub", Py_BuildValue("OOOO", self, template, string, count)); |
| 1561 | } |
| 1562 | |
| 1563 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1564 | pattern_subn(PatternObject* self, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1565 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1566 | PyObject* template; |
| 1567 | PyObject* string; |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 1568 | PyObject* count = Py_False; /* zero */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1569 | if (!PyArg_ParseTuple(args, "OO|O:subn", &template, &string, &count)) |
| 1570 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1571 | |
| 1572 | /* delegate to Python code */ |
| 1573 | return call("_subn", Py_BuildValue("OOOO", self, template, string, count)); |
| 1574 | } |
| 1575 | |
| 1576 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1577 | pattern_split(PatternObject* self, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1578 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1579 | PyObject* string; |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 1580 | PyObject* maxsplit = Py_False; /* zero */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1581 | if (!PyArg_ParseTuple(args, "O|O:split", &string, &maxsplit)) |
| 1582 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1583 | |
| 1584 | /* delegate to Python code */ |
| 1585 | return call("_split", Py_BuildValue("OOO", self, string, maxsplit)); |
| 1586 | } |
| 1587 | |
| 1588 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1589 | pattern_findall(PatternObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1590 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1591 | SRE_STATE state; |
| 1592 | PyObject* list; |
| 1593 | int status; |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1594 | int i; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1595 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1596 | PyObject* string; |
| 1597 | int start = 0; |
| 1598 | int end = INT_MAX; |
| 1599 | if (!PyArg_ParseTuple(args, "O|ii:findall", &string, &start, &end)) |
| 1600 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1601 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1602 | string = state_init(&state, self, string, start, end); |
| 1603 | if (!string) |
| 1604 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1605 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1606 | list = PyList_New(0); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1607 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1608 | while (state.start <= state.end) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1609 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1610 | PyObject* item; |
| 1611 | |
| 1612 | state.ptr = state.start; |
| 1613 | |
| 1614 | if (state.charsize == 1) { |
| 1615 | status = sre_search(&state, PatternObject_GetCode(self)); |
| 1616 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1617 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1618 | status = sre_usearch(&state, PatternObject_GetCode(self)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1619 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1620 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1621 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1622 | if (status > 0) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1623 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1624 | /* don't bother to build a match object */ |
| 1625 | switch (self->groups) { |
| 1626 | case 0: |
| 1627 | item = PySequence_GetSlice( |
| 1628 | string, |
| 1629 | ((char*) state.start - (char*) state.beginning) / |
| 1630 | state.charsize, |
| 1631 | ((char*) state.ptr - (char*) state.beginning) / |
| 1632 | state.charsize); |
| 1633 | if (!item) |
| 1634 | goto error; |
| 1635 | break; |
| 1636 | case 1: |
| 1637 | item = state_getslice(&state, 1, string); |
| 1638 | if (!item) |
| 1639 | goto error; |
| 1640 | break; |
| 1641 | default: |
| 1642 | item = PyTuple_New(self->groups); |
| 1643 | if (!item) |
| 1644 | goto error; |
| 1645 | for (i = 0; i < self->groups; i++) { |
| 1646 | PyObject* o = state_getslice(&state, i+1, string); |
| 1647 | if (!o) { |
| 1648 | Py_DECREF(item); |
| 1649 | goto error; |
| 1650 | } |
| 1651 | PyTuple_SET_ITEM(item, i, o); |
| 1652 | } |
| 1653 | break; |
| 1654 | } |
| 1655 | |
| 1656 | if (PyList_Append(list, item) < 0) { |
| 1657 | Py_DECREF(item); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1658 | goto error; |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1659 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1660 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1661 | if (state.ptr == state.start) |
| 1662 | state.start = (void*) ((char*) state.ptr + state.charsize); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1663 | else |
| 1664 | state.start = state.ptr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1665 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1666 | } else { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1667 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1668 | if (status == 0) |
| 1669 | break; |
| 1670 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1671 | pattern_error(status); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1672 | goto error; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1673 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1674 | } |
| 1675 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1676 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1677 | state_fini(&state); |
| 1678 | return list; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1679 | |
| 1680 | error: |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1681 | Py_DECREF(list); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1682 | state_fini(&state); |
| 1683 | return NULL; |
| 1684 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1685 | } |
| 1686 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1687 | static PyMethodDef pattern_methods[] = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1688 | {"match", (PyCFunction) pattern_match, 1}, |
| 1689 | {"search", (PyCFunction) pattern_search, 1}, |
| 1690 | {"sub", (PyCFunction) pattern_sub, 1}, |
| 1691 | {"subn", (PyCFunction) pattern_subn, 1}, |
| 1692 | {"split", (PyCFunction) pattern_split, 1}, |
| 1693 | {"findall", (PyCFunction) pattern_findall, 1}, |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1694 | /* experimental */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1695 | {"scanner", (PyCFunction) pattern_scanner, 1}, |
| 1696 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1697 | }; |
| 1698 | |
| 1699 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1700 | pattern_getattr(PatternObject* self, char* name) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1701 | { |
| 1702 | PyObject* res; |
| 1703 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1704 | res = Py_FindMethod(pattern_methods, (PyObject*) self, name); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1705 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1706 | if (res) |
| 1707 | return res; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1708 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1709 | PyErr_Clear(); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1710 | |
| 1711 | /* attributes */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1712 | if (!strcmp(name, "pattern")) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1713 | Py_INCREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1714 | return self->pattern; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1715 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1716 | |
| 1717 | if (!strcmp(name, "flags")) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1718 | return Py_BuildValue("i", self->flags); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1719 | |
Fredrik Lundh | 01016fe | 2000-06-30 00:27:46 +0000 | [diff] [blame] | 1720 | if (!strcmp(name, "groups")) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1721 | return Py_BuildValue("i", self->groups); |
Fredrik Lundh | 01016fe | 2000-06-30 00:27:46 +0000 | [diff] [blame] | 1722 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1723 | if (!strcmp(name, "groupindex") && self->groupindex) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1724 | Py_INCREF(self->groupindex); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1725 | return self->groupindex; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1726 | } |
| 1727 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1728 | PyErr_SetString(PyExc_AttributeError, name); |
| 1729 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1730 | } |
| 1731 | |
| 1732 | statichere PyTypeObject Pattern_Type = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1733 | PyObject_HEAD_INIT(NULL) |
| 1734 | 0, "SRE_Pattern", |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1735 | sizeof(PatternObject), sizeof(SRE_CODE), |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1736 | (destructor)pattern_dealloc, /*tp_dealloc*/ |
| 1737 | 0, /*tp_print*/ |
| 1738 | (getattrfunc)pattern_getattr /*tp_getattr*/ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1739 | }; |
| 1740 | |
| 1741 | /* -------------------------------------------------------------------- */ |
| 1742 | /* match methods */ |
| 1743 | |
| 1744 | static void |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1745 | match_dealloc(MatchObject* self) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1746 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1747 | Py_XDECREF(self->regs); |
| 1748 | Py_XDECREF(self->string); |
| 1749 | Py_DECREF(self->pattern); |
| 1750 | PyObject_DEL(self); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1751 | } |
| 1752 | |
| 1753 | static PyObject* |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 1754 | match_getslice_by_index(MatchObject* self, int index, PyObject* def) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1755 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1756 | if (index < 0 || index >= self->groups) { |
| 1757 | /* raise IndexError if we were given a bad group number */ |
| 1758 | PyErr_SetString( |
| 1759 | PyExc_IndexError, |
| 1760 | "no such group" |
| 1761 | ); |
| 1762 | return NULL; |
| 1763 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1764 | |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1765 | index *= 2; |
| 1766 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1767 | if (self->string == Py_None || self->mark[index] < 0) { |
| 1768 | /* return default value if the string or group is undefined */ |
| 1769 | Py_INCREF(def); |
| 1770 | return def; |
| 1771 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1772 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1773 | return PySequence_GetSlice( |
| 1774 | self->string, self->mark[index], self->mark[index+1] |
| 1775 | ); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1776 | } |
| 1777 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1778 | static int |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1779 | match_getindex(MatchObject* self, PyObject* index) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1780 | { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1781 | int i; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1782 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1783 | if (PyInt_Check(index)) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1784 | return (int) PyInt_AS_LONG(index); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1785 | |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1786 | i = -1; |
| 1787 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1788 | if (self->pattern->groupindex) { |
| 1789 | index = PyObject_GetItem(self->pattern->groupindex, index); |
| 1790 | if (index) { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1791 | if (PyInt_Check(index)) |
| 1792 | i = (int) PyInt_AS_LONG(index); |
| 1793 | Py_DECREF(index); |
| 1794 | } else |
| 1795 | PyErr_Clear(); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1796 | } |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1797 | |
| 1798 | return i; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1799 | } |
| 1800 | |
| 1801 | static PyObject* |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 1802 | match_getslice(MatchObject* self, PyObject* index, PyObject* def) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1803 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1804 | return match_getslice_by_index(self, match_getindex(self, index), def); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1805 | } |
| 1806 | |
| 1807 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1808 | match_group(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1809 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1810 | PyObject* result; |
| 1811 | int i, size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1812 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1813 | size = PyTuple_GET_SIZE(args); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1814 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1815 | switch (size) { |
| 1816 | case 0: |
| 1817 | result = match_getslice(self, Py_False, Py_None); |
| 1818 | break; |
| 1819 | case 1: |
| 1820 | result = match_getslice(self, PyTuple_GET_ITEM(args, 0), Py_None); |
| 1821 | break; |
| 1822 | default: |
| 1823 | /* fetch multiple items */ |
| 1824 | result = PyTuple_New(size); |
| 1825 | if (!result) |
| 1826 | return NULL; |
| 1827 | for (i = 0; i < size; i++) { |
| 1828 | PyObject* item = match_getslice( |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 1829 | self, PyTuple_GET_ITEM(args, i), Py_None |
| 1830 | ); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1831 | if (!item) { |
| 1832 | Py_DECREF(result); |
| 1833 | return NULL; |
| 1834 | } |
| 1835 | PyTuple_SET_ITEM(result, i, item); |
| 1836 | } |
| 1837 | break; |
| 1838 | } |
| 1839 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1840 | } |
| 1841 | |
| 1842 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1843 | match_groups(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1844 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1845 | PyObject* result; |
| 1846 | int index; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1847 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1848 | PyObject* def = Py_None; |
| 1849 | if (!PyArg_ParseTuple(args, "|O:groups", &def)) |
| 1850 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1851 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1852 | result = PyTuple_New(self->groups-1); |
| 1853 | if (!result) |
| 1854 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1855 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1856 | for (index = 1; index < self->groups; index++) { |
| 1857 | PyObject* item; |
| 1858 | item = match_getslice_by_index(self, index, def); |
| 1859 | if (!item) { |
| 1860 | Py_DECREF(result); |
| 1861 | return NULL; |
| 1862 | } |
| 1863 | PyTuple_SET_ITEM(result, index-1, item); |
| 1864 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1865 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1866 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1867 | } |
| 1868 | |
| 1869 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1870 | match_groupdict(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1871 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1872 | PyObject* result; |
| 1873 | PyObject* keys; |
| 1874 | int index; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1875 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1876 | PyObject* def = Py_None; |
| 1877 | if (!PyArg_ParseTuple(args, "|O:groupdict", &def)) |
| 1878 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1879 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1880 | result = PyDict_New(); |
| 1881 | if (!result || !self->pattern->groupindex) |
| 1882 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1883 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1884 | keys = PyMapping_Keys(self->pattern->groupindex); |
| 1885 | if (!keys) { |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 1886 | Py_DECREF(result); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1887 | return NULL; |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 1888 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1889 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1890 | for (index = 0; index < PyList_GET_SIZE(keys); index++) { |
| 1891 | PyObject* key; |
| 1892 | PyObject* item; |
| 1893 | key = PyList_GET_ITEM(keys, index); |
| 1894 | if (!key) { |
| 1895 | Py_DECREF(keys); |
| 1896 | Py_DECREF(result); |
| 1897 | return NULL; |
| 1898 | } |
| 1899 | item = match_getslice(self, key, def); |
| 1900 | if (!item) { |
| 1901 | Py_DECREF(key); |
| 1902 | Py_DECREF(keys); |
| 1903 | Py_DECREF(result); |
| 1904 | return NULL; |
| 1905 | } |
| 1906 | /* FIXME: <fl> this can fail, right? */ |
| 1907 | PyDict_SetItem(result, key, item); |
| 1908 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1909 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1910 | Py_DECREF(keys); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1911 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1912 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1913 | } |
| 1914 | |
| 1915 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1916 | match_start(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1917 | { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1918 | int index; |
| 1919 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1920 | PyObject* index_ = Py_False; /* zero */ |
| 1921 | if (!PyArg_ParseTuple(args, "|O:start", &index_)) |
| 1922 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1923 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1924 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1925 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1926 | if (index < 0 || index >= self->groups) { |
| 1927 | PyErr_SetString( |
| 1928 | PyExc_IndexError, |
| 1929 | "no such group" |
| 1930 | ); |
| 1931 | return NULL; |
| 1932 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1933 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1934 | if (self->mark[index*2] < 0) { |
| 1935 | Py_INCREF(Py_None); |
| 1936 | return Py_None; |
| 1937 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1938 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1939 | return Py_BuildValue("i", self->mark[index*2]); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1940 | } |
| 1941 | |
| 1942 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1943 | match_end(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1944 | { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1945 | int index; |
| 1946 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1947 | PyObject* index_ = Py_False; /* zero */ |
| 1948 | if (!PyArg_ParseTuple(args, "|O:end", &index_)) |
| 1949 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1950 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1951 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1952 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1953 | if (index < 0 || index >= self->groups) { |
| 1954 | PyErr_SetString( |
| 1955 | PyExc_IndexError, |
| 1956 | "no such group" |
| 1957 | ); |
| 1958 | return NULL; |
| 1959 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1960 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1961 | if (self->mark[index*2] < 0) { |
| 1962 | Py_INCREF(Py_None); |
| 1963 | return Py_None; |
| 1964 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1965 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1966 | return Py_BuildValue("i", self->mark[index*2+1]); |
| 1967 | } |
| 1968 | |
| 1969 | LOCAL(PyObject*) |
| 1970 | _pair(int i1, int i2) |
| 1971 | { |
| 1972 | PyObject* pair; |
| 1973 | PyObject* item; |
| 1974 | |
| 1975 | pair = PyTuple_New(2); |
| 1976 | if (!pair) |
| 1977 | return NULL; |
| 1978 | |
| 1979 | item = PyInt_FromLong(i1); |
| 1980 | if (!item) |
| 1981 | goto error; |
| 1982 | PyTuple_SET_ITEM(pair, 0, item); |
| 1983 | |
| 1984 | item = PyInt_FromLong(i2); |
| 1985 | if (!item) |
| 1986 | goto error; |
| 1987 | PyTuple_SET_ITEM(pair, 1, item); |
| 1988 | |
| 1989 | return pair; |
| 1990 | |
| 1991 | error: |
| 1992 | Py_DECREF(pair); |
| 1993 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1994 | } |
| 1995 | |
| 1996 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1997 | match_span(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1998 | { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1999 | int index; |
| 2000 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2001 | PyObject* index_ = Py_False; /* zero */ |
| 2002 | if (!PyArg_ParseTuple(args, "|O:span", &index_)) |
| 2003 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2004 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2005 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2006 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2007 | if (index < 0 || index >= self->groups) { |
| 2008 | PyErr_SetString( |
| 2009 | PyExc_IndexError, |
| 2010 | "no such group" |
| 2011 | ); |
| 2012 | return NULL; |
| 2013 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2014 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2015 | if (self->mark[index*2] < 0) { |
| 2016 | Py_INCREF(Py_None); |
| 2017 | Py_INCREF(Py_None); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2018 | return Py_BuildValue("OO", Py_None, Py_None); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2019 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2020 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2021 | return _pair(self->mark[index*2], self->mark[index*2+1]); |
| 2022 | } |
| 2023 | |
| 2024 | static PyObject* |
| 2025 | match_regs(MatchObject* self) |
| 2026 | { |
| 2027 | PyObject* regs; |
| 2028 | PyObject* item; |
| 2029 | int index; |
| 2030 | |
| 2031 | regs = PyTuple_New(self->groups); |
| 2032 | if (!regs) |
| 2033 | return NULL; |
| 2034 | |
| 2035 | for (index = 0; index < self->groups; index++) { |
| 2036 | item = _pair(self->mark[index*2], self->mark[index*2+1]); |
| 2037 | if (!item) { |
| 2038 | Py_DECREF(regs); |
| 2039 | return NULL; |
| 2040 | } |
| 2041 | PyTuple_SET_ITEM(regs, index, item); |
| 2042 | } |
| 2043 | |
| 2044 | Py_INCREF(regs); |
| 2045 | self->regs = regs; |
| 2046 | |
| 2047 | return regs; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2048 | } |
| 2049 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2050 | static PyMethodDef match_methods[] = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2051 | {"group", (PyCFunction) match_group, 1}, |
| 2052 | {"start", (PyCFunction) match_start, 1}, |
| 2053 | {"end", (PyCFunction) match_end, 1}, |
| 2054 | {"span", (PyCFunction) match_span, 1}, |
| 2055 | {"groups", (PyCFunction) match_groups, 1}, |
| 2056 | {"groupdict", (PyCFunction) match_groupdict, 1}, |
| 2057 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2058 | }; |
| 2059 | |
| 2060 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2061 | match_getattr(MatchObject* self, char* name) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2062 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2063 | PyObject* res; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2064 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2065 | res = Py_FindMethod(match_methods, (PyObject*) self, name); |
| 2066 | if (res) |
| 2067 | return res; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2068 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2069 | PyErr_Clear(); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2070 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2071 | if (!strcmp(name, "lastindex")) { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2072 | if (self->lastindex >= 0) |
| 2073 | return Py_BuildValue("i", self->lastindex); |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 2074 | Py_INCREF(Py_None); |
| 2075 | return Py_None; |
| 2076 | } |
| 2077 | |
| 2078 | if (!strcmp(name, "lastgroup")) { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2079 | if (self->pattern->indexgroup && self->lastindex >= 0) { |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 2080 | PyObject* result = PySequence_GetItem( |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2081 | self->pattern->indexgroup, self->lastindex |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 2082 | ); |
| 2083 | if (result) |
| 2084 | return result; |
| 2085 | PyErr_Clear(); |
| 2086 | } |
| 2087 | Py_INCREF(Py_None); |
| 2088 | return Py_None; |
| 2089 | } |
| 2090 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2091 | if (!strcmp(name, "string")) { |
| 2092 | if (self->string) { |
| 2093 | Py_INCREF(self->string); |
| 2094 | return self->string; |
| 2095 | } else { |
| 2096 | Py_INCREF(Py_None); |
| 2097 | return Py_None; |
| 2098 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2099 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2100 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2101 | if (!strcmp(name, "regs")) { |
| 2102 | if (self->regs) { |
| 2103 | Py_INCREF(self->regs); |
| 2104 | return self->regs; |
| 2105 | } else |
| 2106 | return match_regs(self); |
| 2107 | } |
| 2108 | |
| 2109 | if (!strcmp(name, "re")) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2110 | Py_INCREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2111 | return (PyObject*) self->pattern; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2112 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2113 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2114 | if (!strcmp(name, "pos")) |
| 2115 | return Py_BuildValue("i", self->pos); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2116 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2117 | if (!strcmp(name, "endpos")) |
| 2118 | return Py_BuildValue("i", self->endpos); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2119 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2120 | PyErr_SetString(PyExc_AttributeError, name); |
| 2121 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2122 | } |
| 2123 | |
| 2124 | /* FIXME: implement setattr("string", None) as a special case (to |
| 2125 | detach the associated string, if any */ |
| 2126 | |
| 2127 | statichere PyTypeObject Match_Type = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2128 | PyObject_HEAD_INIT(NULL) |
| 2129 | 0, "SRE_Match", |
| 2130 | sizeof(MatchObject), sizeof(int), |
| 2131 | (destructor)match_dealloc, /*tp_dealloc*/ |
| 2132 | 0, /*tp_print*/ |
| 2133 | (getattrfunc)match_getattr /*tp_getattr*/ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2134 | }; |
| 2135 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2136 | /* -------------------------------------------------------------------- */ |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2137 | /* scanner methods (experimental) */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2138 | |
| 2139 | static void |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2140 | scanner_dealloc(ScannerObject* self) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2141 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2142 | state_fini(&self->state); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2143 | Py_DECREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2144 | PyObject_DEL(self); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2145 | } |
| 2146 | |
| 2147 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2148 | scanner_match(ScannerObject* self, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2149 | { |
| 2150 | SRE_STATE* state = &self->state; |
| 2151 | PyObject* match; |
| 2152 | int status; |
| 2153 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 2154 | state_reset(state); |
| 2155 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2156 | state->ptr = state->start; |
| 2157 | |
| 2158 | if (state->charsize == 1) { |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 2159 | status = sre_match(state, PatternObject_GetCode(self->pattern), 1); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2160 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2161 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 2162 | status = sre_umatch(state, PatternObject_GetCode(self->pattern), 1); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2163 | #endif |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2164 | } |
| 2165 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2166 | match = pattern_new_match((PatternObject*) self->pattern, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2167 | state, status); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2168 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2169 | if (status == 0 || state->ptr == state->start) |
| 2170 | state->start = (void*) ((char*) state->ptr + state->charsize); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2171 | else |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2172 | state->start = state->ptr; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2173 | |
| 2174 | return match; |
| 2175 | } |
| 2176 | |
| 2177 | |
| 2178 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2179 | scanner_search(ScannerObject* self, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2180 | { |
| 2181 | SRE_STATE* state = &self->state; |
| 2182 | PyObject* match; |
| 2183 | int status; |
| 2184 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 2185 | state_reset(state); |
| 2186 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2187 | state->ptr = state->start; |
| 2188 | |
| 2189 | if (state->charsize == 1) { |
| 2190 | status = sre_search(state, PatternObject_GetCode(self->pattern)); |
| 2191 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2192 | #if defined(HAVE_UNICODE) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2193 | status = sre_usearch(state, PatternObject_GetCode(self->pattern)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2194 | #endif |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2195 | } |
| 2196 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2197 | match = pattern_new_match((PatternObject*) self->pattern, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2198 | state, status); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2199 | |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2200 | if (status == 0 || state->ptr == state->start) |
| 2201 | state->start = (void*) ((char*) state->ptr + state->charsize); |
| 2202 | else |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2203 | state->start = state->ptr; |
| 2204 | |
| 2205 | return match; |
| 2206 | } |
| 2207 | |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2208 | static PyMethodDef scanner_methods[] = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2209 | {"match", (PyCFunction) scanner_match, 0}, |
| 2210 | {"search", (PyCFunction) scanner_search, 0}, |
| 2211 | {NULL, NULL} |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2212 | }; |
| 2213 | |
| 2214 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2215 | scanner_getattr(ScannerObject* self, char* name) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2216 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2217 | PyObject* res; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2218 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2219 | res = Py_FindMethod(scanner_methods, (PyObject*) self, name); |
| 2220 | if (res) |
| 2221 | return res; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2222 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2223 | PyErr_Clear(); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2224 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2225 | /* attributes */ |
| 2226 | if (!strcmp(name, "pattern")) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2227 | Py_INCREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2228 | return self->pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2229 | } |
| 2230 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2231 | PyErr_SetString(PyExc_AttributeError, name); |
| 2232 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2233 | } |
| 2234 | |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2235 | statichere PyTypeObject Scanner_Type = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2236 | PyObject_HEAD_INIT(NULL) |
| 2237 | 0, "SRE_Scanner", |
| 2238 | sizeof(ScannerObject), 0, |
| 2239 | (destructor)scanner_dealloc, /*tp_dealloc*/ |
| 2240 | 0, /*tp_print*/ |
| 2241 | (getattrfunc)scanner_getattr, /*tp_getattr*/ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2242 | }; |
| 2243 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2244 | static PyMethodDef _functions[] = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2245 | {"compile", _compile, 1}, |
| 2246 | {"getcodesize", sre_codesize, 1}, |
| 2247 | {"getlower", sre_getlower, 1}, |
| 2248 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2249 | }; |
| 2250 | |
| 2251 | void |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2252 | #if defined(WIN32) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2253 | __declspec(dllexport) |
| 2254 | #endif |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 2255 | init_sre(void) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2256 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2257 | /* Patch object types */ |
| 2258 | Pattern_Type.ob_type = Match_Type.ob_type = |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2259 | Scanner_Type.ob_type = &PyType_Type; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2260 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2261 | Py_InitModule("_" MODULE, _functions); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2262 | } |
| 2263 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2264 | #endif /* !defined(SRE_RECURSIVE) */ |