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