diff options
Diffstat (limited to 'posix/regex_internal.h')
| -rw-r--r-- | posix/regex_internal.h | 231 |
1 files changed, 98 insertions, 133 deletions
diff --git a/posix/regex_internal.h b/posix/regex_internal.h index 0ccd8d3665..3b575c3c48 100644 --- a/posix/regex_internal.h +++ b/posix/regex_internal.h @@ -1,5 +1,5 @@ /* Extended regular expression matching and search library. - Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. + Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>. @@ -39,6 +39,20 @@ #if defined HAVE_WCTYPE_H || defined _LIBC # include <wctype.h> #endif /* HAVE_WCTYPE_H || _LIBC */ +#if defined HAVE_STDBOOL_H || defined _LIBC +# include <stdbool.h> +#endif /* HAVE_STDBOOL_H || _LIBC */ +#if defined HAVE_STDINT_H || defined _LIBC +# include <stdint.h> +#endif /* HAVE_STDINT_H || _LIBC */ +#if defined _LIBC +# include <bits/libc-lock.h> +#else +# define __libc_lock_define(CLASS,NAME) +# define __libc_lock_init(NAME) do { } while (0) +# define __libc_lock_lock(NAME) do { } while (0) +# define __libc_lock_unlock(NAME) do { } while (0) +#endif /* In case that the system doesn't have isblank(). */ #if !defined _LIBC && !defined HAVE_ISBLANK && !defined isblank @@ -60,7 +74,7 @@ # ifdef _LIBC # undef gettext # define gettext(msgid) \ - INTUSE(__dcgettext) (INTUSE(_libc_intl_domainname), msgid, LC_MESSAGES) + INTUSE(__dcgettext) (_libc_intl_domainname, msgid, LC_MESSAGES) # endif #else # define gettext(msgid) (msgid) @@ -72,6 +86,11 @@ # define gettext_noop(String) String #endif +/* For loser systems without the definition. */ +#ifndef SIZE_MAX +# define SIZE_MAX ((size_t) -1) +#endif + #if (defined MB_CUR_MAX && HAVE_LOCALE_H && HAVE_WCTYPE_H && HAVE_WCHAR_H && HAVE_WCRTOMB && HAVE_MBRTOWC && HAVE_WCSCOLL) || _LIBC # define RE_ENABLE_I18N #endif @@ -83,8 +102,6 @@ # define inline #endif -/* Number of bits in a byte. */ -#define BYTE_BITS 8 /* Number of single byte character. */ #define SBC_MAX 256 @@ -114,26 +131,28 @@ extern const char __re_error_msgid[] attribute_hidden; extern const size_t __re_error_msgid_idx[] attribute_hidden; -/* Number of bits in an unsinged int. */ -#define UINT_BITS (sizeof (unsigned int) * BYTE_BITS) -/* Number of unsigned int in an bit_set. */ -#define BITSET_UINTS ((SBC_MAX + UINT_BITS - 1) / UINT_BITS) -typedef unsigned int bitset[BITSET_UINTS]; -typedef unsigned int *re_bitset_ptr_t; -typedef const unsigned int *re_const_bitset_ptr_t; - -#define bitset_set(set,i) (set[i / UINT_BITS] |= 1 << i % UINT_BITS) -#define bitset_clear(set,i) (set[i / UINT_BITS] &= ~(1 << i % UINT_BITS)) -#define bitset_contain(set,i) (set[i / UINT_BITS] & (1 << i % UINT_BITS)) -#define bitset_empty(set) memset (set, 0, sizeof (unsigned int) * BITSET_UINTS) -#define bitset_set_all(set) \ - memset (set, 255, sizeof (unsigned int) * BITSET_UINTS) -#define bitset_copy(dest,src) \ - memcpy (dest, src, sizeof (unsigned int) * BITSET_UINTS) -static inline void bitset_not (bitset set); -static inline void bitset_merge (bitset dest, const bitset src); -static inline void bitset_not_merge (bitset dest, const bitset src); -static inline void bitset_mask (bitset dest, const bitset src); +/* An integer used to represent a set of bits. It must be unsigned, + and must be at least as wide as unsigned int. */ +typedef unsigned long int bitset_word_t; +/* All bits set in a bitset_word_t. */ +#define BITSET_WORD_MAX ULONG_MAX +/* Number of bits in a bitset_word_t. */ +#define BITSET_WORD_BITS (sizeof (bitset_word_t) * CHAR_BIT) +/* Number of bitset_word_t in a bit_set. */ +#define BITSET_WORDS (SBC_MAX / BITSET_WORD_BITS) +typedef bitset_word_t bitset_t[BITSET_WORDS]; +typedef bitset_word_t *re_bitset_ptr_t; +typedef const bitset_word_t *re_const_bitset_ptr_t; + +#define bitset_set(set,i) \ + (set[i / BITSET_WORD_BITS] |= (bitset_word_t) 1 << i % BITSET_WORD_BITS) +#define bitset_clear(set,i) \ + (set[i / BITSET_WORD_BITS] &= ~((bitset_word_t) 1 << i % BITSET_WORD_BITS)) +#define bitset_contain(set,i) \ + (set[i / BITSET_WORD_BITS] & ((bitset_word_t) 1 << i % BITSET_WORD_BITS)) +#define bitset_empty(set) memset (set, '\0', sizeof (bitset_t)) +#define bitset_set_all(set) memset (set, '\xff', sizeof (bitset_t)) +#define bitset_copy(dest,src) memcpy (dest, src, sizeof (bitset_t)) #define PREV_WORD_CONSTRAINT 0x0001 #define PREV_NOTWORD_CONSTRAINT 0x0002 @@ -143,18 +162,21 @@ static inline void bitset_mask (bitset dest, const bitset src); #define NEXT_NEWLINE_CONSTRAINT 0x0020 #define PREV_BEGBUF_CONSTRAINT 0x0040 #define NEXT_ENDBUF_CONSTRAINT 0x0080 -#define DUMMY_CONSTRAINT 0x0100 +#define WORD_DELIM_CONSTRAINT 0x0100 +#define NOT_WORD_DELIM_CONSTRAINT 0x0200 typedef enum { INSIDE_WORD = PREV_WORD_CONSTRAINT | NEXT_WORD_CONSTRAINT, WORD_FIRST = PREV_NOTWORD_CONSTRAINT | NEXT_WORD_CONSTRAINT, WORD_LAST = PREV_WORD_CONSTRAINT | NEXT_NOTWORD_CONSTRAINT, + INSIDE_NOTWORD = PREV_NOTWORD_CONSTRAINT | NEXT_NOTWORD_CONSTRAINT, LINE_FIRST = PREV_NEWLINE_CONSTRAINT, LINE_LAST = NEXT_NEWLINE_CONSTRAINT, BUF_FIRST = PREV_BEGBUF_CONSTRAINT, BUF_LAST = NEXT_ENDBUF_CONSTRAINT, - WORD_DELIM = DUMMY_CONSTRAINT + WORD_DELIM = WORD_DELIM_CONSTRAINT, + NOT_WORD_DELIM = NOT_WORD_DELIM_CONSTRAINT } re_context_type; typedef struct @@ -186,16 +208,16 @@ typedef enum OP_CLOSE_SUBEXP = EPSILON_BIT | 1, OP_ALT = EPSILON_BIT | 2, OP_DUP_ASTERISK = EPSILON_BIT | 3, - OP_DUP_PLUS = EPSILON_BIT | 4, - OP_DUP_QUESTION = EPSILON_BIT | 5, - ANCHOR = EPSILON_BIT | 6, - OP_DELETED_SUBEXP = EPSILON_BIT | 7, + ANCHOR = EPSILON_BIT | 4, /* Tree type, these are used only by tree. */ CONCAT = 16, + SUBEXP = 17, /* Token type, these are used only by token. */ - OP_OPEN_BRACKET = 17, + OP_DUP_PLUS = 18, + OP_DUP_QUESTION, + OP_OPEN_BRACKET, OP_CLOSE_BRACKET, OP_CHARSET_RANGE, OP_OPEN_DUP_NUM, @@ -284,6 +306,7 @@ typedef struct unsigned int duplicated : 1; unsigned int opt_subexp : 1; #ifdef RE_ENABLE_I18N + unsigned int accept_mb : 1; /* These 2 bits can be moved into the union if needed (e.g. if running out of bits; move opr.c to opr.c.c and move the flags to opr.c.flags). */ unsigned int mb_partial : 1; @@ -292,8 +315,6 @@ typedef struct } re_token_t; #define IS_EPSILON_NODE(type) ((type) & EPSILON_BIT) -#define ACCEPT_MB_NODE(type) \ - ((type) >= OP_PERIOD && (type) <= OP_UTF8_PERIOD) struct re_string_t { @@ -337,7 +358,7 @@ struct re_string_t the beginning of the input string. */ unsigned int tip_context; /* The translation passed as a part of an argument of re_compile_pattern. */ - unsigned RE_TRANSLATE_TYPE trans; + RE_TRANSLATE_TYPE trans; /* Copy of re_dfa_t's word_char. */ re_const_bitset_ptr_t word_char; /* 1 if REG_ICASE. */ @@ -364,45 +385,18 @@ typedef struct re_dfa_t re_dfa_t; # endif #endif -#ifndef RE_NO_INTERNAL_PROTOTYPES -static reg_errcode_t re_string_allocate (re_string_t *pstr, const char *str, - int len, int init_len, - RE_TRANSLATE_TYPE trans, int icase, - const re_dfa_t *dfa) - internal_function; -static reg_errcode_t re_string_construct (re_string_t *pstr, const char *str, - int len, RE_TRANSLATE_TYPE trans, - int icase, const re_dfa_t *dfa) - internal_function; -static reg_errcode_t re_string_reconstruct (re_string_t *pstr, int idx, - int eflags) internal_function; static reg_errcode_t re_string_realloc_buffers (re_string_t *pstr, int new_buf_len) internal_function; -# ifdef RE_ENABLE_I18N +#ifdef RE_ENABLE_I18N static void build_wcs_buffer (re_string_t *pstr) internal_function; static int build_wcs_upper_buffer (re_string_t *pstr) internal_function; -# endif /* RE_ENABLE_I18N */ +#endif /* RE_ENABLE_I18N */ static void build_upper_buffer (re_string_t *pstr) internal_function; static void re_string_translate_buffer (re_string_t *pstr) internal_function; -static void re_string_destruct (re_string_t *pstr) internal_function; -# ifdef RE_ENABLE_I18N -static int re_string_elem_size_at (const re_string_t *pstr, int idx) - internal_function __attribute ((pure)); -static inline int re_string_char_size_at (const re_string_t *pstr, int idx) - internal_function __attribute ((pure)); -static inline wint_t re_string_wchar_at (const re_string_t *pstr, int idx) - internal_function __attribute ((pure)); -# endif /* RE_ENABLE_I18N */ static unsigned int re_string_context_at (const re_string_t *input, int idx, int eflags) internal_function __attribute ((pure)); -static unsigned char re_string_peek_byte_case (const re_string_t *pstr, - int idx) - internal_function __attribute ((pure)); -static unsigned char re_string_fetch_byte_case (re_string_t *pstr) - internal_function __attribute ((pure)); -#endif #define re_string_peek_byte(pstr, offset) \ ((pstr)->mbs[(pstr)->cur_idx + offset]) #define re_string_fetch_byte(pstr) \ @@ -420,6 +414,21 @@ static unsigned char re_string_fetch_byte_case (re_string_t *pstr) #define re_string_skip_bytes(pstr,idx) ((pstr)->cur_idx += (idx)) #define re_string_set_index(pstr,idx) ((pstr)->cur_idx = (idx)) +#include <alloca.h> + +#ifndef _LIBC +# if HAVE_ALLOCA +/* The OS usually guarantees only one guard page at the bottom of the stack, + and a page size can be as small as 4096 bytes. So we cannot safely + allocate anything larger than 4096 bytes. Also care for the possibility + of a few compiler-allocated temporary stack slots. */ +# define __libc_use_alloca(n) ((n) < 4032) +# else +/* alloca is implemented with malloc, so just use malloc. */ +# define __libc_use_alloca(n) 0 +# endif +#endif + #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) @@ -429,15 +438,14 @@ struct bin_tree_t struct bin_tree_t *parent; struct bin_tree_t *left; struct bin_tree_t *right; + struct bin_tree_t *first; + struct bin_tree_t *next; + + re_token_t token; /* `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; @@ -486,7 +494,7 @@ struct re_dfastate_t re_node_set non_eps_nodes; re_node_set inveclosure; re_node_set *entrance_nodes; - struct re_dfastate_t **trtable; + struct re_dfastate_t **trtable, **word_trtable; unsigned int context : 4; unsigned int halt : 1; /* If this state can accept `multi byte'. @@ -496,7 +504,6 @@ struct re_dfastate_t /* If this state has backreference node(s). */ unsigned int has_backref : 1; unsigned int has_constraint : 1; - unsigned int word_trtable : 1; }; typedef struct re_dfastate_t re_dfastate_t; @@ -533,7 +540,6 @@ 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. */ @@ -556,9 +562,9 @@ typedef struct /* The string object corresponding to the input string. */ re_string_t input; #if defined _LIBC || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L) - re_dfa_t *const dfa; + const re_dfa_t *const dfa; #else - re_dfa_t *dfa; + const re_dfa_t *dfa; #endif /* EFLAGS of the argument of regexec. */ int eflags; @@ -605,8 +611,8 @@ struct re_fail_stack_t struct re_dfa_t { re_token_t *nodes; - int nodes_alloc; - int nodes_len; + size_t nodes_alloc; + size_t nodes_len; int *nexts; int *org_indices; re_node_set *edests; @@ -624,13 +630,12 @@ struct re_dfa_t /* number of subexpressions `re_nsub' is in regex_t. */ unsigned int state_hash_mask; - 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; - unsigned int completed_bkref_map; + bitset_word_t used_bkref_map; + bitset_word_t completed_bkref_map; unsigned int has_plural_match : 1; /* If this dfa has "multibyte node", which is a backreference or @@ -641,52 +646,20 @@ struct re_dfa_t unsigned int map_notascii : 1; unsigned int word_ops_used : 1; int mb_cur_max; - bitset word_char; + bitset_t word_char; reg_syntax_t syntax; int *subexp_map; #ifdef DEBUG char* re_str; #endif + __libc_lock_define (, lock) }; -#ifndef RE_NO_INTERNAL_PROTOTYPES -static reg_errcode_t re_node_set_alloc (re_node_set *set, int size) internal_function; -static reg_errcode_t re_node_set_init_1 (re_node_set *set, int elem) internal_function; -static reg_errcode_t re_node_set_init_2 (re_node_set *set, int elem1, - int elem2) internal_function; #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) internal_function; -static reg_errcode_t re_node_set_add_intersect (re_node_set *dest, - const re_node_set *src1, - const re_node_set *src2) internal_function; -static reg_errcode_t re_node_set_init_union (re_node_set *dest, - const re_node_set *src1, - const re_node_set *src2) internal_function; -static reg_errcode_t re_node_set_merge (re_node_set *dest, - const re_node_set *src) internal_function; -static int re_node_set_insert (re_node_set *set, int elem) internal_function; -static int re_node_set_insert_last (re_node_set *set, - int elem) internal_function; -static int re_node_set_compare (const re_node_set *set1, - const re_node_set *set2) - internal_function __attribute ((pure)); -static int re_node_set_contains (const re_node_set *set, int elem) - internal_function __attribute ((pure)); -static void re_node_set_remove_at (re_node_set *set, int idx) internal_function; #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) internal_function; -static re_dfastate_t *re_acquire_state (reg_errcode_t *err, re_dfa_t *dfa, - const re_node_set *nodes) internal_function; -static re_dfastate_t *re_acquire_state_context (reg_errcode_t *err, - re_dfa_t *dfa, - const re_node_set *nodes, - unsigned int context) internal_function; -static void free_state (re_dfastate_t *state) internal_function; -#endif typedef enum @@ -712,41 +685,33 @@ typedef struct /* Inline functions for bitset operation. */ static inline void -bitset_not (bitset set) +bitset_not (bitset_t set) { int bitset_i; - for (bitset_i = 0; bitset_i < BITSET_UINTS; ++bitset_i) + for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i) set[bitset_i] = ~set[bitset_i]; } static inline void -bitset_merge (bitset dest, const bitset src) +bitset_merge (bitset_t dest, const bitset_t src) { int bitset_i; - for (bitset_i = 0; bitset_i < BITSET_UINTS; ++bitset_i) + for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i) dest[bitset_i] |= src[bitset_i]; } static inline void -bitset_not_merge (bitset dest, const bitset src) -{ - int i; - for (i = 0; i < BITSET_UINTS; ++i) - dest[i] |= ~src[i]; -} - -static inline void -bitset_mask (bitset dest, const bitset src) +bitset_mask (bitset_t dest, const bitset_t src) { int bitset_i; - for (bitset_i = 0; bitset_i < BITSET_UINTS; ++bitset_i) + for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i) dest[bitset_i] &= src[bitset_i]; } -#if defined RE_ENABLE_I18N && !defined RE_NO_INTERNAL_PROTOTYPES +#ifdef RE_ENABLE_I18N /* Inline functions for re_string. */ static inline int -internal_function +internal_function __attribute ((pure)) re_string_char_size_at (const re_string_t *pstr, int idx) { int byte_idx; @@ -759,7 +724,7 @@ re_string_char_size_at (const re_string_t *pstr, int idx) } static inline wint_t -internal_function +internal_function __attribute ((pure)) re_string_wchar_at (const re_string_t *pstr, int idx) { if (pstr->mb_cur_max == 1) @@ -768,14 +733,14 @@ re_string_wchar_at (const re_string_t *pstr, int idx) } static int -internal_function +internal_function __attribute ((pure)) re_string_elem_size_at (const re_string_t *pstr, int idx) { -#ifdef _LIBC +# ifdef _LIBC const unsigned char *p, *extra; const int32_t *table, *indirect; int32_t tmp; -# include <locale/weight.h> +# include <locale/weight.h> uint_fast32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES); if (nrules != 0) @@ -790,7 +755,7 @@ re_string_elem_size_at (const re_string_t *pstr, int idx) return p - pstr->mbs - idx; } else -#endif /* _LIBC */ +# endif /* _LIBC */ return 1; } #endif /* RE_ENABLE_I18N */ |