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-rw-r--r--posix/regex_internal.h231
1 files changed, 133 insertions, 98 deletions
diff --git a/posix/regex_internal.h b/posix/regex_internal.h
index 3b575c3c48..0ccd8d3665 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, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
@@ -39,20 +39,6 @@
#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
@@ -74,7 +60,7 @@
# ifdef _LIBC
# undef gettext
# define gettext(msgid) \
- INTUSE(__dcgettext) (_libc_intl_domainname, msgid, LC_MESSAGES)
+ INTUSE(__dcgettext) (INTUSE(_libc_intl_domainname), msgid, LC_MESSAGES)
# endif
#else
# define gettext(msgid) (msgid)
@@ -86,11 +72,6 @@
# 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
@@ -102,6 +83,8 @@
# define inline
#endif
+/* Number of bits in a byte. */
+#define BYTE_BITS 8
/* Number of single byte character. */
#define SBC_MAX 256
@@ -131,28 +114,26 @@
extern const char __re_error_msgid[] attribute_hidden;
extern const size_t __re_error_msgid_idx[] attribute_hidden;
-/* 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))
+/* 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);
#define PREV_WORD_CONSTRAINT 0x0001
#define PREV_NOTWORD_CONSTRAINT 0x0002
@@ -162,21 +143,18 @@ typedef const bitset_word_t *re_const_bitset_ptr_t;
#define NEXT_NEWLINE_CONSTRAINT 0x0020
#define PREV_BEGBUF_CONSTRAINT 0x0040
#define NEXT_ENDBUF_CONSTRAINT 0x0080
-#define WORD_DELIM_CONSTRAINT 0x0100
-#define NOT_WORD_DELIM_CONSTRAINT 0x0200
+#define DUMMY_CONSTRAINT 0x0100
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 = WORD_DELIM_CONSTRAINT,
- NOT_WORD_DELIM = NOT_WORD_DELIM_CONSTRAINT
+ WORD_DELIM = DUMMY_CONSTRAINT
} re_context_type;
typedef struct
@@ -208,16 +186,16 @@ typedef enum
OP_CLOSE_SUBEXP = EPSILON_BIT | 1,
OP_ALT = EPSILON_BIT | 2,
OP_DUP_ASTERISK = EPSILON_BIT | 3,
- ANCHOR = EPSILON_BIT | 4,
+ OP_DUP_PLUS = EPSILON_BIT | 4,
+ OP_DUP_QUESTION = EPSILON_BIT | 5,
+ ANCHOR = EPSILON_BIT | 6,
+ OP_DELETED_SUBEXP = EPSILON_BIT | 7,
/* Tree type, these are used only by tree. */
CONCAT = 16,
- SUBEXP = 17,
/* Token type, these are used only by token. */
- OP_DUP_PLUS = 18,
- OP_DUP_QUESTION,
- OP_OPEN_BRACKET,
+ OP_OPEN_BRACKET = 17,
OP_CLOSE_BRACKET,
OP_CHARSET_RANGE,
OP_OPEN_DUP_NUM,
@@ -306,7 +284,6 @@ 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;
@@ -315,6 +292,8 @@ 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
{
@@ -358,7 +337,7 @@ 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. */
- RE_TRANSLATE_TYPE trans;
+ unsigned RE_TRANSLATE_TYPE trans;
/* Copy of re_dfa_t's word_char. */
re_const_bitset_ptr_t word_char;
/* 1 if REG_ICASE. */
@@ -385,18 +364,45 @@ 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) \
@@ -414,21 +420,6 @@ static unsigned int re_string_context_at (const re_string_t *input, int idx,
#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)
@@ -438,14 +429,15 @@ 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;
@@ -494,7 +486,7 @@ struct re_dfastate_t
re_node_set non_eps_nodes;
re_node_set inveclosure;
re_node_set *entrance_nodes;
- struct re_dfastate_t **trtable, **word_trtable;
+ struct re_dfastate_t **trtable;
unsigned int context : 4;
unsigned int halt : 1;
/* If this state can accept `multi byte'.
@@ -504,6 +496,7 @@ 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;
@@ -540,6 +533,7 @@ 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. */
@@ -562,9 +556,9 @@ typedef struct
/* The string object corresponding to the input string. */
re_string_t input;
#if defined _LIBC || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
- const re_dfa_t *const dfa;
+ re_dfa_t *const dfa;
#else
- const re_dfa_t *dfa;
+ re_dfa_t *dfa;
#endif
/* EFLAGS of the argument of regexec. */
int eflags;
@@ -611,8 +605,8 @@ struct re_fail_stack_t
struct re_dfa_t
{
re_token_t *nodes;
- size_t nodes_alloc;
- size_t nodes_len;
+ int nodes_alloc;
+ int nodes_len;
int *nexts;
int *org_indices;
re_node_set *edests;
@@ -630,12 +624,13 @@ 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. */
- bitset_word_t used_bkref_map;
- bitset_word_t completed_bkref_map;
+ unsigned int used_bkref_map;
+ unsigned int completed_bkref_map;
unsigned int has_plural_match : 1;
/* If this dfa has "multibyte node", which is a backreference or
@@ -646,20 +641,52 @@ struct re_dfa_t
unsigned int map_notascii : 1;
unsigned int word_ops_used : 1;
int mb_cur_max;
- bitset_t word_char;
+ bitset 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
@@ -685,33 +712,41 @@ typedef struct
/* Inline functions for bitset operation. */
static inline void
-bitset_not (bitset_t set)
+bitset_not (bitset set)
{
int bitset_i;
- for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i)
+ for (bitset_i = 0; bitset_i < BITSET_UINTS; ++bitset_i)
set[bitset_i] = ~set[bitset_i];
}
static inline void
-bitset_merge (bitset_t dest, const bitset_t src)
+bitset_merge (bitset dest, const bitset src)
{
int bitset_i;
- for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i)
+ for (bitset_i = 0; bitset_i < BITSET_UINTS; ++bitset_i)
dest[bitset_i] |= src[bitset_i];
}
static inline void
-bitset_mask (bitset_t dest, const bitset_t src)
+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)
{
int bitset_i;
- for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i)
+ for (bitset_i = 0; bitset_i < BITSET_UINTS; ++bitset_i)
dest[bitset_i] &= src[bitset_i];
}
-#ifdef RE_ENABLE_I18N
+#if defined RE_ENABLE_I18N && !defined RE_NO_INTERNAL_PROTOTYPES
/* Inline functions for re_string. */
static inline int
-internal_function __attribute ((pure))
+internal_function
re_string_char_size_at (const re_string_t *pstr, int idx)
{
int byte_idx;
@@ -724,7 +759,7 @@ re_string_char_size_at (const re_string_t *pstr, int idx)
}
static inline wint_t
-internal_function __attribute ((pure))
+internal_function
re_string_wchar_at (const re_string_t *pstr, int idx)
{
if (pstr->mb_cur_max == 1)
@@ -733,14 +768,14 @@ re_string_wchar_at (const re_string_t *pstr, int idx)
}
static int
-internal_function __attribute ((pure))
+internal_function
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)
@@ -755,7 +790,7 @@ 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 */