743 lines
21 KiB
C
743 lines
21 KiB
C
/* Extended regular expression matching and search library.
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Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301 USA. */
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#ifndef _REGEX_INTERNAL_H
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#define _REGEX_INTERNAL_H 1
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <assert.h>
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#include <ctype.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#if defined HAVE_LOCALE_H || defined _LIBC
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# include <locale.h>
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#endif
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#if defined HAVE_WCHAR_H || defined _LIBC
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# include <wchar.h>
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#endif /* HAVE_WCHAR_H || _LIBC */
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#if defined HAVE_WCTYPE_H || defined _LIBC
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# include <wctype.h>
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#endif /* HAVE_WCTYPE_H || _LIBC */
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/* In case that the system doesn't have isblank(). */
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#if !defined _LIBC && !defined HAVE_ISBLANK && !defined isblank
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# define isblank(ch) ((ch) == ' ' || (ch) == '\t')
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#endif
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#ifdef _LIBC
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# ifndef _RE_DEFINE_LOCALE_FUNCTIONS
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# define _RE_DEFINE_LOCALE_FUNCTIONS 1
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# include <locale/localeinfo.h>
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# include <locale/elem-hash.h>
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# include <locale/coll-lookup.h>
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# endif
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#endif
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/* This is for other GNU distributions with internationalized messages. */
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#if HAVE_LIBINTL_H || defined _LIBC
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# include <libintl.h>
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# ifdef _LIBC
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# undef gettext
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# define gettext(msgid) \
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INTUSE(__dcgettext) (INTUSE(_libc_intl_domainname), msgid, LC_MESSAGES)
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# endif
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#else
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# define gettext(msgid) (msgid)
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#endif
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#ifndef gettext_noop
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/* This define is so xgettext can find the internationalizable
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strings. */
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# define gettext_noop(String) String
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#endif
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#if (defined MB_CUR_MAX && HAVE_LOCALE_H && HAVE_WCTYPE_H && HAVE_WCHAR_H && HAVE_WCRTOMB && HAVE_MBRTOWC && HAVE_WCSCOLL) || _LIBC
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# define RE_ENABLE_I18N
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#endif
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#if __GNUC__ >= 3
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# define BE(expr, val) __builtin_expect (expr, val)
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#else
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# define BE(expr, val) (expr)
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# define inline
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#endif
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/* Number of bits in a byte. */
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#define BYTE_BITS 8
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/* Number of single byte character. */
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#define SBC_MAX 256
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#define COLL_ELEM_LEN_MAX 8
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/* The character which represents newline. */
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#define NEWLINE_CHAR '\n'
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#define WIDE_NEWLINE_CHAR L'\n'
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/* Rename to standard API for using out of glibc. */
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#ifndef _LIBC
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# define __wctype wctype
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# define __iswctype iswctype
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# define __btowc btowc
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# define __mempcpy mempcpy
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# define __wcrtomb wcrtomb
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# define attribute_hidden
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#endif /* not _LIBC */
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extern const char __re_error_msgid[] attribute_hidden;
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extern const size_t __re_error_msgid_idx[] attribute_hidden;
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/* Number of bits in an unsinged int. */
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#define UINT_BITS (sizeof (unsigned int) * BYTE_BITS)
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/* Number of unsigned int in an bit_set. */
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#define BITSET_UINTS ((SBC_MAX + UINT_BITS - 1) / UINT_BITS)
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typedef unsigned int bitset[BITSET_UINTS];
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typedef unsigned int *re_bitset_ptr_t;
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#define bitset_set(set,i) (set[i / UINT_BITS] |= 1 << i % UINT_BITS)
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#define bitset_clear(set,i) (set[i / UINT_BITS] &= ~(1 << i % UINT_BITS))
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#define bitset_contain(set,i) (set[i / UINT_BITS] & (1 << i % UINT_BITS))
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#define bitset_empty(set) memset (set, 0, sizeof (unsigned int) * BITSET_UINTS)
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#define bitset_set_all(set) \
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memset (set, 255, sizeof (unsigned int) * BITSET_UINTS)
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#define bitset_copy(dest,src) \
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memcpy (dest, src, sizeof (unsigned int) * BITSET_UINTS)
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static inline void bitset_not (bitset set);
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static inline void bitset_merge (bitset dest, const bitset src);
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static inline void bitset_not_merge (bitset dest, const bitset src);
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#define PREV_WORD_CONSTRAINT 0x0001
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#define PREV_NOTWORD_CONSTRAINT 0x0002
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#define NEXT_WORD_CONSTRAINT 0x0004
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#define NEXT_NOTWORD_CONSTRAINT 0x0008
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#define PREV_NEWLINE_CONSTRAINT 0x0010
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#define NEXT_NEWLINE_CONSTRAINT 0x0020
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#define PREV_BEGBUF_CONSTRAINT 0x0040
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#define NEXT_ENDBUF_CONSTRAINT 0x0080
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#define DUMMY_CONSTRAINT 0x0100
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typedef enum
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{
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INSIDE_WORD = PREV_WORD_CONSTRAINT | NEXT_WORD_CONSTRAINT,
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WORD_FIRST = PREV_NOTWORD_CONSTRAINT | NEXT_WORD_CONSTRAINT,
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WORD_LAST = PREV_WORD_CONSTRAINT | NEXT_NOTWORD_CONSTRAINT,
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LINE_FIRST = PREV_NEWLINE_CONSTRAINT,
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LINE_LAST = NEXT_NEWLINE_CONSTRAINT,
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BUF_FIRST = PREV_BEGBUF_CONSTRAINT,
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BUF_LAST = NEXT_ENDBUF_CONSTRAINT,
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WORD_DELIM = DUMMY_CONSTRAINT
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} re_context_type;
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typedef struct
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{
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int alloc;
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int nelem;
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int *elems;
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} re_node_set;
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typedef enum
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{
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NON_TYPE = 0,
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/* Token type, these are used only by token. */
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OP_OPEN_BRACKET,
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OP_CLOSE_BRACKET,
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OP_CHARSET_RANGE,
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OP_OPEN_DUP_NUM,
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OP_CLOSE_DUP_NUM,
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OP_NON_MATCH_LIST,
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OP_OPEN_COLL_ELEM,
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OP_CLOSE_COLL_ELEM,
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OP_OPEN_EQUIV_CLASS,
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OP_CLOSE_EQUIV_CLASS,
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OP_OPEN_CHAR_CLASS,
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OP_CLOSE_CHAR_CLASS,
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OP_WORD,
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OP_NOTWORD,
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BACK_SLASH,
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/* Tree type, these are used only by tree. */
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CONCAT,
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ALT,
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SUBEXP,
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SIMPLE_BRACKET,
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#ifdef RE_ENABLE_I18N
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COMPLEX_BRACKET,
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#endif /* RE_ENABLE_I18N */
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/* Node type, These are used by token, node, tree. */
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OP_OPEN_SUBEXP,
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OP_CLOSE_SUBEXP,
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OP_PERIOD,
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CHARACTER,
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END_OF_RE,
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OP_ALT,
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OP_DUP_ASTERISK,
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OP_DUP_PLUS,
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OP_DUP_QUESTION,
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OP_BACK_REF,
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ANCHOR,
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/* Dummy marker. */
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END_OF_RE_TOKEN_T
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} re_token_type_t;
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#ifdef RE_ENABLE_I18N
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typedef struct
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{
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/* Multibyte characters. */
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wchar_t *mbchars;
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/* Collating symbols. */
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# ifdef _LIBC
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int32_t *coll_syms;
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# endif
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/* Equivalence classes. */
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# ifdef _LIBC
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int32_t *equiv_classes;
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# endif
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/* Range expressions. */
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# ifdef _LIBC
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uint32_t *range_starts;
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uint32_t *range_ends;
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# else /* not _LIBC */
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wchar_t *range_starts;
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wchar_t *range_ends;
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# endif /* not _LIBC */
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/* Character classes. */
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wctype_t *char_classes;
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/* If this character set is the non-matching list. */
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unsigned int non_match : 1;
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/* # of multibyte characters. */
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int nmbchars;
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/* # of collating symbols. */
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int ncoll_syms;
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/* # of equivalence classes. */
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int nequiv_classes;
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/* # of range expressions. */
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int nranges;
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/* # of character classes. */
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int nchar_classes;
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} re_charset_t;
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#endif /* RE_ENABLE_I18N */
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typedef struct
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{
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union
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{
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unsigned char c; /* for CHARACTER */
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re_bitset_ptr_t sbcset; /* for SIMPLE_BRACKET */
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#ifdef RE_ENABLE_I18N
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re_charset_t *mbcset; /* for COMPLEX_BRACKET */
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#endif /* RE_ENABLE_I18N */
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int idx; /* for BACK_REF */
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re_context_type ctx_type; /* for ANCHOR */
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} opr;
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#if __GNUC__ >= 2
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re_token_type_t type : 8;
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#else
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re_token_type_t type;
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#endif
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unsigned int constraint : 10; /* context constraint */
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unsigned int duplicated : 1;
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#ifdef RE_ENABLE_I18N
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unsigned int mb_partial : 1;
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#endif
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} re_token_t;
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#define IS_EPSILON_NODE(type) \
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((type) == OP_ALT || (type) == OP_DUP_ASTERISK || (type) == OP_DUP_PLUS \
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|| (type) == OP_DUP_QUESTION || (type) == ANCHOR \
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|| (type) == OP_OPEN_SUBEXP || (type) == OP_CLOSE_SUBEXP)
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#define ACCEPT_MB_NODE(type) \
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((type) == COMPLEX_BRACKET || (type) == OP_PERIOD)
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struct re_string_t
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{
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/* Indicate the raw buffer which is the original string passed as an
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argument of regexec(), re_search(), etc.. */
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const unsigned char *raw_mbs;
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/* Store the multibyte string. In case of "case insensitive mode" like
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REG_ICASE, upper cases of the string are stored, otherwise MBS points
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the same address that RAW_MBS points. */
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unsigned char *mbs;
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/* Store the case sensitive multibyte string. In case of
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"case insensitive mode", the original string are stored,
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otherwise MBS_CASE points the same address that MBS points. */
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unsigned char *mbs_case;
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#ifdef RE_ENABLE_I18N
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/* Store the wide character string which is corresponding to MBS. */
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wint_t *wcs;
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mbstate_t cur_state;
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#endif
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/* Index in RAW_MBS. Each character mbs[i] corresponds to
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raw_mbs[raw_mbs_idx + i]. */
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int raw_mbs_idx;
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/* The length of the valid characters in the buffers. */
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int valid_len;
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/* The length of the buffers MBS, MBS_CASE, and WCS. */
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int bufs_len;
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/* The index in MBS, which is updated by re_string_fetch_byte. */
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int cur_idx;
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/* This is length_of_RAW_MBS - RAW_MBS_IDX. */
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int len;
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/* End of the buffer may be shorter than its length in the cases such
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as re_match_2, re_search_2. Then, we use STOP for end of the buffer
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instead of LEN. */
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int stop;
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/* The context of mbs[0]. We store the context independently, since
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the context of mbs[0] may be different from raw_mbs[0], which is
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the beginning of the input string. */
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unsigned int tip_context;
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/* The translation passed as a part of an argument of re_compile_pattern. */
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RE_TRANSLATE_TYPE trans;
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/* 1 if REG_ICASE. */
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unsigned int icase : 1;
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};
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typedef struct re_string_t re_string_t;
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/* In case of REG_ICASE, we allocate the buffer dynamically for mbs. */
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#define MBS_ALLOCATED(pstr) (pstr->icase)
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/* In case that we need translation, we allocate the buffer dynamically
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for mbs_case. Note that mbs == mbs_case if not REG_ICASE. */
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#define MBS_CASE_ALLOCATED(pstr) (pstr->trans != NULL)
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static reg_errcode_t re_string_allocate (re_string_t *pstr, const char *str,
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int len, int init_len,
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RE_TRANSLATE_TYPE trans, int icase);
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static reg_errcode_t re_string_construct (re_string_t *pstr, const char *str,
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int len, RE_TRANSLATE_TYPE trans,
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int icase);
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static reg_errcode_t re_string_reconstruct (re_string_t *pstr, int idx,
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int eflags, int newline);
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static reg_errcode_t re_string_realloc_buffers (re_string_t *pstr,
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int new_buf_len);
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#ifdef RE_ENABLE_I18N
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static void build_wcs_buffer (re_string_t *pstr);
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static void build_wcs_upper_buffer (re_string_t *pstr);
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#endif /* RE_ENABLE_I18N */
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static void build_upper_buffer (re_string_t *pstr);
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static void re_string_translate_buffer (re_string_t *pstr);
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static void re_string_destruct (re_string_t *pstr);
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#ifdef RE_ENABLE_I18N
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static int re_string_elem_size_at (const re_string_t *pstr, int idx);
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static inline int re_string_char_size_at (const re_string_t *pstr, int idx);
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static inline wint_t re_string_wchar_at (const re_string_t *pstr, int idx);
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#endif /* RE_ENABLE_I18N */
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static unsigned int re_string_context_at (const re_string_t *input, int idx,
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int eflags, int newline_anchor);
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#define re_string_peek_byte(pstr, offset) \
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((pstr)->mbs[(pstr)->cur_idx + offset])
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#define re_string_peek_byte_case(pstr, offset) \
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((pstr)->mbs_case[(pstr)->cur_idx + offset])
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#define re_string_fetch_byte(pstr) \
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((pstr)->mbs[(pstr)->cur_idx++])
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#define re_string_fetch_byte_case(pstr) \
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((pstr)->mbs_case[(pstr)->cur_idx++])
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||
#define re_string_first_byte(pstr, idx) \
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((idx) == (pstr)->len || (pstr)->wcs[idx] != WEOF)
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||
#define re_string_is_single_byte_char(pstr, idx) \
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||
((pstr)->wcs[idx] != WEOF && ((pstr)->len == (idx) \
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|| (pstr)->wcs[(idx) + 1] != WEOF))
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||
#define re_string_eoi(pstr) ((pstr)->stop <= (pstr)->cur_idx)
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||
#define re_string_cur_idx(pstr) ((pstr)->cur_idx)
|
||
#define re_string_get_buffer(pstr) ((pstr)->mbs)
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||
#define re_string_length(pstr) ((pstr)->len)
|
||
#define re_string_byte_at(pstr,idx) ((pstr)->mbs[idx])
|
||
#define re_string_skip_bytes(pstr,idx) ((pstr)->cur_idx += (idx))
|
||
#define re_string_set_index(pstr,idx) ((pstr)->cur_idx = (idx))
|
||
|
||
#define re_malloc(t,n) ((t *) malloc ((n) * sizeof (t)))
|
||
#define re_realloc(p,t,n) ((t *) realloc (p, (n) * sizeof (t)))
|
||
#define re_free(p) free (p)
|
||
|
||
struct bin_tree_t
|
||
{
|
||
struct bin_tree_t *parent;
|
||
struct bin_tree_t *left;
|
||
struct bin_tree_t *right;
|
||
|
||
/* `node_idx' is the index in dfa->nodes, if `type' == 0.
|
||
Otherwise `type' indicate the type of this node. */
|
||
re_token_type_t type;
|
||
int node_idx;
|
||
|
||
int first;
|
||
int next;
|
||
re_node_set eclosure;
|
||
};
|
||
typedef struct bin_tree_t bin_tree_t;
|
||
|
||
|
||
#define CONTEXT_WORD 1
|
||
#define CONTEXT_NEWLINE (CONTEXT_WORD << 1)
|
||
#define CONTEXT_BEGBUF (CONTEXT_NEWLINE << 1)
|
||
#define CONTEXT_ENDBUF (CONTEXT_BEGBUF << 1)
|
||
|
||
#define IS_WORD_CONTEXT(c) ((c) & CONTEXT_WORD)
|
||
#define IS_NEWLINE_CONTEXT(c) ((c) & CONTEXT_NEWLINE)
|
||
#define IS_BEGBUF_CONTEXT(c) ((c) & CONTEXT_BEGBUF)
|
||
#define IS_ENDBUF_CONTEXT(c) ((c) & CONTEXT_ENDBUF)
|
||
#define IS_ORDINARY_CONTEXT(c) ((c) == 0)
|
||
|
||
#define IS_WORD_CHAR(ch) (isalnum (ch) || (ch) == '_')
|
||
#define IS_NEWLINE(ch) ((ch) == NEWLINE_CHAR)
|
||
#define IS_WIDE_WORD_CHAR(ch) (iswalnum (ch) || (ch) == L'_')
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||
#define IS_WIDE_NEWLINE(ch) ((ch) == WIDE_NEWLINE_CHAR)
|
||
|
||
#define NOT_SATISFY_PREV_CONSTRAINT(constraint,context) \
|
||
((((constraint) & PREV_WORD_CONSTRAINT) && !IS_WORD_CONTEXT (context)) \
|
||
|| ((constraint & PREV_NOTWORD_CONSTRAINT) && IS_WORD_CONTEXT (context)) \
|
||
|| ((constraint & PREV_NEWLINE_CONSTRAINT) && !IS_NEWLINE_CONTEXT (context))\
|
||
|| ((constraint & PREV_BEGBUF_CONSTRAINT) && !IS_BEGBUF_CONTEXT (context)))
|
||
|
||
#define NOT_SATISFY_NEXT_CONSTRAINT(constraint,context) \
|
||
((((constraint) & NEXT_WORD_CONSTRAINT) && !IS_WORD_CONTEXT (context)) \
|
||
|| (((constraint) & NEXT_NOTWORD_CONSTRAINT) && IS_WORD_CONTEXT (context)) \
|
||
|| (((constraint) & NEXT_NEWLINE_CONSTRAINT) && !IS_NEWLINE_CONTEXT (context)) \
|
||
|| (((constraint) & NEXT_ENDBUF_CONSTRAINT) && !IS_ENDBUF_CONTEXT (context)))
|
||
|
||
struct re_dfastate_t
|
||
{
|
||
unsigned int hash;
|
||
re_node_set nodes;
|
||
re_node_set *entrance_nodes;
|
||
struct re_dfastate_t **trtable;
|
||
struct re_dfastate_t **trtable_search;
|
||
/* If this state is a special state.
|
||
A state is a special state if the state is the halt state, or
|
||
a anchor. */
|
||
unsigned int context : 2;
|
||
unsigned int halt : 1;
|
||
/* If this state can accept `multi byte'.
|
||
Note that we refer to multibyte characters, and multi character
|
||
collating elements as `multi byte'. */
|
||
unsigned int accept_mb : 1;
|
||
/* If this state has backreference node(s). */
|
||
unsigned int has_backref : 1;
|
||
unsigned int has_constraint : 1;
|
||
};
|
||
typedef struct re_dfastate_t re_dfastate_t;
|
||
|
||
typedef struct
|
||
{
|
||
/* start <= node < end */
|
||
int start;
|
||
int end;
|
||
} re_subexp_t;
|
||
|
||
struct re_state_table_entry
|
||
{
|
||
int num;
|
||
int alloc;
|
||
re_dfastate_t **array;
|
||
};
|
||
|
||
/* Array type used in re_sub_match_last_t and re_sub_match_top_t. */
|
||
|
||
typedef struct
|
||
{
|
||
int next_idx;
|
||
int alloc;
|
||
re_dfastate_t **array;
|
||
} state_array_t;
|
||
|
||
/* Store information about the node NODE whose type is OP_CLOSE_SUBEXP. */
|
||
|
||
typedef struct
|
||
{
|
||
int node;
|
||
int str_idx; /* The position NODE match at. */
|
||
state_array_t path;
|
||
} re_sub_match_last_t;
|
||
|
||
/* Store information about the node NODE whose type is OP_OPEN_SUBEXP.
|
||
And information about the node, whose type is OP_CLOSE_SUBEXP,
|
||
corresponding to NODE is stored in LASTS. */
|
||
|
||
typedef struct
|
||
{
|
||
int str_idx;
|
||
int node;
|
||
int next_last_offset;
|
||
state_array_t *path;
|
||
int alasts; /* Allocation size of LASTS. */
|
||
int nlasts; /* The number of LASTS. */
|
||
re_sub_match_last_t **lasts;
|
||
} re_sub_match_top_t;
|
||
|
||
struct re_backref_cache_entry
|
||
{
|
||
int node;
|
||
int str_idx;
|
||
int subexp_from;
|
||
int subexp_to;
|
||
int flag;
|
||
};
|
||
|
||
typedef struct
|
||
{
|
||
/* EFLAGS of the argument of regexec. */
|
||
int eflags;
|
||
/* Where the matching ends. */
|
||
int match_last;
|
||
int last_node;
|
||
/* The string object corresponding to the input string. */
|
||
re_string_t *input;
|
||
/* The state log used by the matcher. */
|
||
re_dfastate_t **state_log;
|
||
int state_log_top;
|
||
/* Back reference cache. */
|
||
int nbkref_ents;
|
||
int abkref_ents;
|
||
struct re_backref_cache_entry *bkref_ents;
|
||
int max_mb_elem_len;
|
||
int nsub_tops;
|
||
int asub_tops;
|
||
re_sub_match_top_t **sub_tops;
|
||
} re_match_context_t;
|
||
|
||
typedef struct
|
||
{
|
||
int cur_bkref;
|
||
int cls_subexp_idx;
|
||
|
||
re_dfastate_t **sifted_states;
|
||
re_dfastate_t **limited_states;
|
||
|
||
re_node_set limits;
|
||
|
||
int last_node;
|
||
int last_str_idx;
|
||
int check_subexp;
|
||
} re_sift_context_t;
|
||
|
||
struct re_fail_stack_ent_t
|
||
{
|
||
int idx;
|
||
int node;
|
||
regmatch_t *regs;
|
||
re_node_set eps_via_nodes;
|
||
};
|
||
|
||
struct re_fail_stack_t
|
||
{
|
||
int num;
|
||
int alloc;
|
||
struct re_fail_stack_ent_t *stack;
|
||
};
|
||
|
||
struct re_dfa_t
|
||
{
|
||
re_bitset_ptr_t word_char;
|
||
|
||
/* number of subexpressions `re_nsub' is in regex_t. */
|
||
int subexps_alloc;
|
||
re_subexp_t *subexps;
|
||
|
||
re_token_t *nodes;
|
||
int nodes_alloc;
|
||
int nodes_len;
|
||
bin_tree_t *str_tree;
|
||
int *nexts;
|
||
int *org_indices;
|
||
re_node_set *edests;
|
||
re_node_set *eclosures;
|
||
re_node_set *inveclosures;
|
||
struct re_state_table_entry *state_table;
|
||
unsigned int state_hash_mask;
|
||
re_dfastate_t *init_state;
|
||
re_dfastate_t *init_state_word;
|
||
re_dfastate_t *init_state_nl;
|
||
re_dfastate_t *init_state_begbuf;
|
||
int states_alloc;
|
||
int init_node;
|
||
int nbackref; /* The number of backreference in this dfa. */
|
||
/* Bitmap expressing which backreference is used. */
|
||
unsigned int used_bkref_map;
|
||
#ifdef DEBUG
|
||
char* re_str;
|
||
#endif
|
||
unsigned int has_plural_match : 1;
|
||
/* If this dfa has "multibyte node", which is a backreference or
|
||
a node which can accept multibyte character or multi character
|
||
collating element. */
|
||
unsigned int has_mb_node : 1;
|
||
};
|
||
typedef struct re_dfa_t re_dfa_t;
|
||
|
||
static reg_errcode_t re_node_set_alloc (re_node_set *set, int size);
|
||
static reg_errcode_t re_node_set_init_1 (re_node_set *set, int elem);
|
||
static reg_errcode_t re_node_set_init_2 (re_node_set *set, int elem1,
|
||
int elem2);
|
||
#define re_node_set_init_empty(set) memset (set, '\0', sizeof (re_node_set))
|
||
static reg_errcode_t re_node_set_init_copy (re_node_set *dest,
|
||
const re_node_set *src);
|
||
static reg_errcode_t re_node_set_add_intersect (re_node_set *dest,
|
||
const re_node_set *src1,
|
||
const re_node_set *src2);
|
||
static reg_errcode_t re_node_set_init_union (re_node_set *dest,
|
||
const re_node_set *src1,
|
||
const re_node_set *src2);
|
||
static reg_errcode_t re_node_set_merge (re_node_set *dest,
|
||
const re_node_set *src);
|
||
static int re_node_set_insert (re_node_set *set, int elem);
|
||
static int re_node_set_compare (const re_node_set *set1,
|
||
const re_node_set *set2);
|
||
static int re_node_set_contains (const re_node_set *set, int elem);
|
||
static void re_node_set_remove_at (re_node_set *set, int idx);
|
||
#define re_node_set_remove(set,id) \
|
||
(re_node_set_remove_at (set, re_node_set_contains (set, id) - 1))
|
||
#define re_node_set_empty(p) ((p)->nelem = 0)
|
||
#define re_node_set_free(set) re_free ((set)->elems)
|
||
static int re_dfa_add_node (re_dfa_t *dfa, re_token_t token, int mode);
|
||
static re_dfastate_t *re_acquire_state (reg_errcode_t *err, re_dfa_t *dfa,
|
||
const re_node_set *nodes);
|
||
static re_dfastate_t *re_acquire_state_context (reg_errcode_t *err,
|
||
re_dfa_t *dfa,
|
||
const re_node_set *nodes,
|
||
unsigned int context);
|
||
static void free_state (re_dfastate_t *state);
|
||
|
||
|
||
typedef enum
|
||
{
|
||
SB_CHAR,
|
||
MB_CHAR,
|
||
EQUIV_CLASS,
|
||
COLL_SYM,
|
||
CHAR_CLASS
|
||
} bracket_elem_type;
|
||
|
||
typedef struct
|
||
{
|
||
bracket_elem_type type;
|
||
union
|
||
{
|
||
unsigned char ch;
|
||
unsigned char *name;
|
||
wchar_t wch;
|
||
} opr;
|
||
} bracket_elem_t;
|
||
|
||
|
||
/* Inline functions for bitset operation. */
|
||
static inline void
|
||
bitset_not (set)
|
||
bitset set;
|
||
{
|
||
int bitset_i;
|
||
for (bitset_i = 0; bitset_i < BITSET_UINTS; ++bitset_i)
|
||
set[bitset_i] = ~set[bitset_i];
|
||
}
|
||
|
||
static inline void
|
||
bitset_merge (dest, src)
|
||
bitset dest;
|
||
const bitset src;
|
||
{
|
||
int bitset_i;
|
||
for (bitset_i = 0; bitset_i < BITSET_UINTS; ++bitset_i)
|
||
dest[bitset_i] |= src[bitset_i];
|
||
}
|
||
|
||
static inline void
|
||
bitset_not_merge (dest, src)
|
||
bitset dest;
|
||
const bitset src;
|
||
{
|
||
int i;
|
||
for (i = 0; i < BITSET_UINTS; ++i)
|
||
dest[i] |= ~src[i];
|
||
}
|
||
|
||
#ifdef RE_ENABLE_I18N
|
||
/* Inline functions for re_string. */
|
||
static inline int
|
||
re_string_char_size_at (pstr, idx)
|
||
const re_string_t *pstr;
|
||
int idx;
|
||
{
|
||
int byte_idx;
|
||
if (MB_CUR_MAX == 1)
|
||
return 1;
|
||
for (byte_idx = 1; idx + byte_idx < pstr->len; ++byte_idx)
|
||
if (pstr->wcs[idx + byte_idx] != WEOF)
|
||
break;
|
||
return byte_idx;
|
||
}
|
||
|
||
static inline wint_t
|
||
re_string_wchar_at (pstr, idx)
|
||
const re_string_t *pstr;
|
||
int idx;
|
||
{
|
||
if (MB_CUR_MAX == 1)
|
||
return (wint_t) pstr->mbs[idx];
|
||
return (wint_t) pstr->wcs[idx];
|
||
}
|
||
|
||
static int
|
||
re_string_elem_size_at (pstr, idx)
|
||
const re_string_t *pstr;
|
||
int idx;
|
||
{
|
||
#ifdef _LIBC
|
||
const unsigned char *p, *extra;
|
||
const int32_t *table, *indirect;
|
||
int32_t tmp;
|
||
# include <locale/weight.h>
|
||
uint_fast32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
|
||
|
||
if (nrules != 0)
|
||
{
|
||
table = (const int32_t *) _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
|
||
extra = (const unsigned char *)
|
||
_NL_CURRENT (LC_COLLATE, _NL_COLLATE_EXTRAMB);
|
||
indirect = (const int32_t *) _NL_CURRENT (LC_COLLATE,
|
||
_NL_COLLATE_INDIRECTMB);
|
||
p = pstr->mbs + idx;
|
||
tmp = findidx (&p);
|
||
return p - pstr->mbs - idx;
|
||
}
|
||
else
|
||
#endif /* _LIBC */
|
||
return 1;
|
||
}
|
||
#endif /* RE_ENABLE_I18N */
|
||
|
||
#endif /* _REGEX_INTERNAL_H */
|