/* * Regular Expression Engine *  * Copyright (c) 2017-2018 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */#ifndef LIBREGEXP_H#define LIBREGEXP_H #include <stddef.h> #include "libunicode.h" #define LRE_BOOL  int       /* for documentation purposes */ #define LRE_FLAG_GLOBAL     (1 << 0)#define LRE_FLAG_IGNORECASE (1 << 1)#define LRE_FLAG_MULTILINE  (1 << 2)#define LRE_FLAG_DOTALL     (1 << 3)#define LRE_FLAG_UTF16      (1 << 4)#define LRE_FLAG_STICKY     (1 << 5) #define LRE_FLAG_NAMED_GROUPS (1 << 7) /* named groups are present in the regexp */ uint8_t *lre_compile(int *plen, char *error_msg, int error_msg_size,                     const char *buf, size_t buf_len, int re_flags,                     void *opaque);int lre_get_capture_count(const uint8_t *bc_buf);int lre_get_flags(const uint8_t *bc_buf);const char *lre_get_groupnames(const uint8_t *bc_buf);int lre_exec(uint8_t **capture,             const uint8_t *bc_buf, const uint8_t *cbuf, int cindex, int clen,             int cbuf_type, void *opaque); int lre_parse_escape(const uint8_t **pp, int allow_utf16);LRE_BOOL lre_is_space(int c); /* must be provided by the user */LRE_BOOL lre_check_stack_overflow(void *opaque, size_t alloca_size); void *lre_realloc(void *opaque, void *ptr, size_t size); /* JS identifier test */extern uint32_t const lre_id_start_table_ascii[4];extern uint32_t const lre_id_continue_table_ascii[4]; static inline int lre_js_is_ident_first(int c){    if ((uint32_t)c < 128) {        return (lre_id_start_table_ascii[c >> 5] >> (c & 31)) & 1;    } else {#ifdef CONFIG_ALL_UNICODE        return lre_is_id_start(c);#else        return !lre_is_space(c);#endif    }} static inline int lre_js_is_ident_next(int c){    if ((uint32_t)c < 128) {        return (lre_id_continue_table_ascii[c >> 5] >> (c & 31)) & 1;    } else {        /* ZWNJ and ZWJ are accepted in identifiers */#ifdef CONFIG_ALL_UNICODE        return lre_is_id_continue(c) || c == 0x200C || c == 0x200D;#else        return !lre_is_space(c) || c == 0x200C || c == 0x200D;#endif    }} #undef LRE_BOOL #endif /* LIBREGEXP_H */