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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /posix/regexec.c
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
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2.5-18.1
Diffstat (limited to 'posix/regexec.c')
-rw-r--r--posix/regexec.c872
1 files changed, 438 insertions, 434 deletions
diff --git a/posix/regexec.c b/posix/regexec.c
index 91b48dd..bdfa355 100644
--- a/posix/regexec.c
+++ b/posix/regexec.c
@@ -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>.
@@ -25,7 +25,7 @@ static void match_ctx_free (re_match_context_t *cache) internal_function;
static reg_errcode_t match_ctx_add_entry (re_match_context_t *cache, int node,
int str_idx, int from, int to)
internal_function;
-static int search_cur_bkref_entry (re_match_context_t *mctx, int str_idx)
+static int search_cur_bkref_entry (const re_match_context_t *mctx, int str_idx)
internal_function;
static reg_errcode_t match_ctx_add_subtop (re_match_context_t *mctx, int node,
int str_idx) internal_function;
@@ -52,81 +52,76 @@ static int re_search_stub (struct re_pattern_buffer *bufp,
int ret_len) internal_function;
static unsigned re_copy_regs (struct re_registers *regs, regmatch_t *pmatch,
int nregs, int regs_allocated) internal_function;
-static inline re_dfastate_t *acquire_init_state_context
- (reg_errcode_t *err, const re_match_context_t *mctx, int idx)
- __attribute ((always_inline)) internal_function;
static reg_errcode_t prune_impossible_nodes (re_match_context_t *mctx)
internal_function;
static int check_matching (re_match_context_t *mctx, int fl_longest_match,
- int *p_match_first)
- internal_function;
-static int check_halt_node_context (const re_dfa_t *dfa, int node,
- unsigned int context) internal_function;
+ int *p_match_first) internal_function;
static int check_halt_state_context (const re_match_context_t *mctx,
const re_dfastate_t *state, int idx)
internal_function;
-static void update_regs (re_dfa_t *dfa, regmatch_t *pmatch,
+static void update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
regmatch_t *prev_idx_match, int cur_node,
int cur_idx, int nmatch) internal_function;
-static int proceed_next_node (const re_match_context_t *mctx,
- int nregs, regmatch_t *regs,
- int *pidx, int node, re_node_set *eps_via_nodes,
- struct re_fail_stack_t *fs) internal_function;
static reg_errcode_t push_fail_stack (struct re_fail_stack_t *fs,
int str_idx, int dest_node, int nregs,
regmatch_t *regs,
- re_node_set *eps_via_nodes) internal_function;
-static int pop_fail_stack (struct re_fail_stack_t *fs, int *pidx, int nregs,
- regmatch_t *regs, re_node_set *eps_via_nodes) internal_function;
+ re_node_set *eps_via_nodes)
+ internal_function;
static reg_errcode_t set_regs (const regex_t *preg,
const re_match_context_t *mctx,
size_t nmatch, regmatch_t *pmatch,
int fl_backtrack) internal_function;
-static reg_errcode_t free_fail_stack_return (struct re_fail_stack_t *fs) internal_function;
+static reg_errcode_t free_fail_stack_return (struct re_fail_stack_t *fs)
+ internal_function;
#ifdef RE_ENABLE_I18N
static int sift_states_iter_mb (const re_match_context_t *mctx,
re_sift_context_t *sctx,
- int node_idx, int str_idx, int max_str_idx) internal_function;
+ int node_idx, int str_idx, int max_str_idx)
+ internal_function;
#endif /* RE_ENABLE_I18N */
-static reg_errcode_t sift_states_backward (re_match_context_t *mctx,
- re_sift_context_t *sctx) internal_function;
-static reg_errcode_t build_sifted_states (re_match_context_t *mctx,
+static reg_errcode_t sift_states_backward (const re_match_context_t *mctx,
+ re_sift_context_t *sctx)
+ internal_function;
+static reg_errcode_t build_sifted_states (const re_match_context_t *mctx,
re_sift_context_t *sctx, int str_idx,
- re_node_set *cur_dest) internal_function;
-static reg_errcode_t update_cur_sifted_state (re_match_context_t *mctx,
+ re_node_set *cur_dest)
+ internal_function;
+static reg_errcode_t update_cur_sifted_state (const re_match_context_t *mctx,
re_sift_context_t *sctx,
int str_idx,
- re_node_set *dest_nodes) internal_function;
-static reg_errcode_t add_epsilon_src_nodes (re_dfa_t *dfa,
- re_node_set *dest_nodes,
- const re_node_set *candidates) internal_function;
-static reg_errcode_t sub_epsilon_src_nodes (re_dfa_t *dfa, int node,
+ re_node_set *dest_nodes)
+ internal_function;
+static reg_errcode_t add_epsilon_src_nodes (const re_dfa_t *dfa,
re_node_set *dest_nodes,
- const re_node_set *and_nodes) internal_function;
-static int check_dst_limits (re_match_context_t *mctx, re_node_set *limits,
+ const re_node_set *candidates)
+ internal_function;
+static int check_dst_limits (const re_match_context_t *mctx,
+ re_node_set *limits,
int dst_node, int dst_idx, int src_node,
int src_idx) internal_function;
-static int check_dst_limits_calc_pos_1 (re_match_context_t *mctx,
+static int check_dst_limits_calc_pos_1 (const re_match_context_t *mctx,
int boundaries, int subexp_idx,
- int from_node, int bkref_idx) internal_function;
-static int check_dst_limits_calc_pos (re_match_context_t *mctx,
+ int from_node, int bkref_idx)
+ internal_function;
+static int check_dst_limits_calc_pos (const re_match_context_t *mctx,
int limit, int subexp_idx,
int node, int str_idx,
int bkref_idx) internal_function;
-static reg_errcode_t check_subexp_limits (re_dfa_t *dfa,
+static reg_errcode_t check_subexp_limits (const re_dfa_t *dfa,
re_node_set *dest_nodes,
const re_node_set *candidates,
re_node_set *limits,
struct re_backref_cache_entry *bkref_ents,
int str_idx) internal_function;
-static reg_errcode_t sift_states_bkref (re_match_context_t *mctx,
+static reg_errcode_t sift_states_bkref (const re_match_context_t *mctx,
re_sift_context_t *sctx,
- int str_idx, const re_node_set *candidates) internal_function;
-static reg_errcode_t clean_state_log_if_needed (re_match_context_t *mctx,
- int next_state_log_idx) internal_function;
-static reg_errcode_t merge_state_array (re_dfa_t *dfa, re_dfastate_t **dst,
- re_dfastate_t **src, int num) internal_function;
+ int str_idx, const re_node_set *candidates)
+ internal_function;
+static reg_errcode_t merge_state_array (const re_dfa_t *dfa,
+ re_dfastate_t **dst,
+ re_dfastate_t **src, int num)
+ internal_function;
static re_dfastate_t *find_recover_state (reg_errcode_t *err,
re_match_context_t *mctx) internal_function;
static re_dfastate_t *transit_state (reg_errcode_t *err,
@@ -134,27 +129,33 @@ static re_dfastate_t *transit_state (reg_errcode_t *err,
re_dfastate_t *state) internal_function;
static re_dfastate_t *merge_state_with_log (reg_errcode_t *err,
re_match_context_t *mctx,
- re_dfastate_t *next_state) internal_function;
+ re_dfastate_t *next_state)
+ internal_function;
static reg_errcode_t check_subexp_matching_top (re_match_context_t *mctx,
re_node_set *cur_nodes,
int str_idx) internal_function;
#if 0
static re_dfastate_t *transit_state_sb (reg_errcode_t *err,
re_match_context_t *mctx,
- re_dfastate_t *pstate) internal_function;
+ re_dfastate_t *pstate)
+ internal_function;
#endif
#ifdef RE_ENABLE_I18N
static reg_errcode_t transit_state_mb (re_match_context_t *mctx,
- re_dfastate_t *pstate) internal_function;
+ re_dfastate_t *pstate)
+ internal_function;
#endif /* RE_ENABLE_I18N */
static reg_errcode_t transit_state_bkref (re_match_context_t *mctx,
- const re_node_set *nodes) internal_function;
+ const re_node_set *nodes)
+ internal_function;
static reg_errcode_t get_subexp (re_match_context_t *mctx,
- int bkref_node, int bkref_str_idx) internal_function;
+ int bkref_node, int bkref_str_idx)
+ internal_function;
static reg_errcode_t get_subexp_sub (re_match_context_t *mctx,
const re_sub_match_top_t *sub_top,
re_sub_match_last_t *sub_last,
- int bkref_node, int bkref_str) internal_function;
+ int bkref_node, int bkref_str)
+ internal_function;
static int find_subexp_node (const re_dfa_t *dfa, const re_node_set *nodes,
int subexp_idx, int type) internal_function;
static reg_errcode_t check_arrival (re_match_context_t *mctx,
@@ -164,34 +165,41 @@ static reg_errcode_t check_arrival (re_match_context_t *mctx,
static reg_errcode_t check_arrival_add_next_nodes (re_match_context_t *mctx,
int str_idx,
re_node_set *cur_nodes,
- re_node_set *next_nodes) internal_function;
-static reg_errcode_t check_arrival_expand_ecl (re_dfa_t *dfa,
+ re_node_set *next_nodes)
+ internal_function;
+static reg_errcode_t check_arrival_expand_ecl (const re_dfa_t *dfa,
re_node_set *cur_nodes,
- int ex_subexp, int type) internal_function;
-static reg_errcode_t check_arrival_expand_ecl_sub (re_dfa_t *dfa,
+ int ex_subexp, int type)
+ internal_function;
+static reg_errcode_t check_arrival_expand_ecl_sub (const re_dfa_t *dfa,
re_node_set *dst_nodes,
int target, int ex_subexp,
int type) internal_function;
static reg_errcode_t expand_bkref_cache (re_match_context_t *mctx,
re_node_set *cur_nodes, int cur_str,
- int subexp_num, int type) internal_function;
-static re_dfastate_t **build_trtable (re_dfa_t *dfa,
- re_dfastate_t *state) internal_function;
+ int subexp_num, int type)
+ internal_function;
+static int build_trtable (const re_dfa_t *dfa,
+ re_dfastate_t *state) internal_function;
#ifdef RE_ENABLE_I18N
-static int check_node_accept_bytes (re_dfa_t *dfa, int node_idx,
- const re_string_t *input, int idx) internal_function;
+static int check_node_accept_bytes (const re_dfa_t *dfa, int node_idx,
+ const re_string_t *input, int idx)
+ internal_function;
# ifdef _LIBC
static unsigned int find_collation_sequence_value (const unsigned char *mbs,
- size_t name_len) internal_function;
+ size_t name_len)
+ internal_function;
# endif /* _LIBC */
#endif /* RE_ENABLE_I18N */
-static int group_nodes_into_DFAstates (re_dfa_t *dfa,
+static int group_nodes_into_DFAstates (const re_dfa_t *dfa,
const re_dfastate_t *state,
re_node_set *states_node,
- bitset *states_ch) internal_function;
+ bitset_t *states_ch) internal_function;
static int check_node_accept (const re_match_context_t *mctx,
- const re_token_t *node, int idx) internal_function;
-static reg_errcode_t extend_buffers (re_match_context_t *mctx) internal_function;
+ const re_token_t *node, int idx)
+ internal_function;
+static reg_errcode_t extend_buffers (re_match_context_t *mctx)
+ internal_function;
/* Entry point for POSIX code. */
@@ -219,6 +227,7 @@ regexec (preg, string, nmatch, pmatch, eflags)
{
reg_errcode_t err;
int start, length;
+ re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
if (eflags & ~(REG_NOTBOL | REG_NOTEOL | REG_STARTEND))
return REG_BADPAT;
@@ -233,12 +242,15 @@ regexec (preg, string, nmatch, pmatch, eflags)
start = 0;
length = strlen (string);
}
+
+ __libc_lock_lock (dfa->lock);
if (preg->no_sub)
err = re_search_internal (preg, string, length, start, length - start,
length, 0, NULL, eflags);
else
err = re_search_internal (preg, string, length, start, length - start,
length, nmatch, pmatch, eflags);
+ __libc_lock_unlock (dfa->lock);
return err != REG_NOERROR;
}
@@ -369,8 +381,12 @@ re_search_2_stub (bufp, string1, length1, string2, length2, start, range, regs,
if (BE (s == NULL, 0))
return -2;
+#ifdef _LIBC
+ memcpy (__mempcpy (s, string1, length1), string2, length2);
+#else
memcpy (s, string1, length1);
memcpy (s + length1, string2, length2);
+#endif
str = s;
free_str = 1;
}
@@ -402,6 +418,7 @@ re_search_stub (bufp, string, length, start, range, stop, regs, ret_len)
regmatch_t *pmatch;
int nregs, rval;
int eflags = 0;
+ re_dfa_t *dfa = (re_dfa_t *) bufp->buffer;
/* Check for out-of-range. */
if (BE (start < 0 || start > length, 0))
@@ -411,6 +428,8 @@ re_search_stub (bufp, string, length, start, range, stop, regs, ret_len)
else if (BE (start + range < 0, 0))
range = -start;
+ __libc_lock_lock (dfa->lock);
+
eflags |= (bufp->not_bol) ? REG_NOTBOL : 0;
eflags |= (bufp->not_eol) ? REG_NOTEOL : 0;
@@ -439,7 +458,10 @@ re_search_stub (bufp, string, length, start, range, stop, regs, ret_len)
nregs = bufp->re_nsub + 1;
pmatch = re_malloc (regmatch_t, nregs);
if (BE (pmatch == NULL, 0))
- return -2;
+ {
+ rval = -2;
+ goto out;
+ }
result = re_search_internal (bufp, string, length, start, range, stop,
nregs, pmatch, eflags);
@@ -469,6 +491,8 @@ re_search_stub (bufp, string, length, start, range, stop, regs, ret_len)
rval = pmatch[0].rm_so;
}
re_free (pmatch);
+ out:
+ __libc_lock_unlock (dfa->lock);
return rval;
}
@@ -602,9 +626,10 @@ re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
regmatch_t pmatch[];
{
reg_errcode_t err;
- re_dfa_t *dfa = (re_dfa_t *)preg->buffer;
+ const re_dfa_t *dfa = (const re_dfa_t *) preg->buffer;
int left_lim, right_lim, incr;
int fl_longest_match, match_first, match_kind, match_last = -1;
+ int extra_nmatch;
int sb, ch;
#if defined _LIBC || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
re_match_context_t mctx = { .dfa = dfa };
@@ -613,13 +638,16 @@ re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
#endif
char *fastmap = (preg->fastmap != NULL && preg->fastmap_accurate
&& range && !preg->can_be_null) ? preg->fastmap : NULL;
- unsigned RE_TRANSLATE_TYPE t = (unsigned RE_TRANSLATE_TYPE) preg->translate;
+ RE_TRANSLATE_TYPE t = preg->translate;
#if !(defined _LIBC || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
memset (&mctx, '\0', sizeof (re_match_context_t));
mctx.dfa = dfa;
#endif
+ extra_nmatch = (nmatch > preg->re_nsub) ? nmatch - (preg->re_nsub + 1) : 0;
+ nmatch -= extra_nmatch;
+
/* Check if the DFA haven't been compiled. */
if (BE (preg->used == 0 || dfa->init_state == NULL
|| dfa->init_state_word == NULL || dfa->init_state_nl == NULL
@@ -867,14 +895,14 @@ re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
#ifdef RE_ENABLE_I18N
if (BE (mctx.input.offsets_needed != 0, 0))
{
- if (pmatch[reg_idx].rm_so == mctx.input.valid_len)
- pmatch[reg_idx].rm_so += mctx.input.valid_raw_len - mctx.input.valid_len;
- else
- pmatch[reg_idx].rm_so = mctx.input.offsets[pmatch[reg_idx].rm_so];
- if (pmatch[reg_idx].rm_eo == mctx.input.valid_len)
- pmatch[reg_idx].rm_eo += mctx.input.valid_raw_len - mctx.input.valid_len;
- else
- pmatch[reg_idx].rm_eo = mctx.input.offsets[pmatch[reg_idx].rm_eo];
+ pmatch[reg_idx].rm_so =
+ (pmatch[reg_idx].rm_so == mctx.input.valid_len
+ ? mctx.input.valid_raw_len
+ : mctx.input.offsets[pmatch[reg_idx].rm_so]);
+ pmatch[reg_idx].rm_eo =
+ (pmatch[reg_idx].rm_eo == mctx.input.valid_len
+ ? mctx.input.valid_raw_len
+ : mctx.input.offsets[pmatch[reg_idx].rm_eo]);
}
#else
assert (mctx.input.offsets_needed == 0);
@@ -882,11 +910,14 @@ re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
pmatch[reg_idx].rm_so += match_first;
pmatch[reg_idx].rm_eo += match_first;
}
+ for (reg_idx = 0; reg_idx < extra_nmatch; ++reg_idx)
+ {
+ pmatch[nmatch + reg_idx].rm_so = -1;
+ pmatch[nmatch + reg_idx].rm_eo = -1;
+ }
if (dfa->subexp_map)
- for (reg_idx = 0;
- reg_idx + 1 < nmatch && reg_idx < preg->re_nsub;
- reg_idx++)
+ for (reg_idx = 0; reg_idx + 1 < nmatch; reg_idx++)
if (dfa->subexp_map[reg_idx] != reg_idx)
{
pmatch[reg_idx + 1].rm_so
@@ -908,7 +939,7 @@ static reg_errcode_t
prune_impossible_nodes (mctx)
re_match_context_t *mctx;
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
int halt_node, match_last;
reg_errcode_t ret;
re_dfastate_t **sifted_states;
@@ -991,12 +1022,11 @@ prune_impossible_nodes (mctx)
since initial states may have constraints like "\<", "^", etc.. */
static inline re_dfastate_t *
-acquire_init_state_context (err, mctx, idx)
- reg_errcode_t *err;
- const re_match_context_t *mctx;
- int idx;
+__attribute ((always_inline)) internal_function
+acquire_init_state_context (reg_errcode_t *err, const re_match_context_t *mctx,
+ int idx)
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
if (dfa->init_state->has_constraint)
{
unsigned int context;
@@ -1034,12 +1064,11 @@ acquire_init_state_context (err, mctx, idx)
index of the buffer. */
static int
-check_matching (mctx, fl_longest_match, p_match_first)
- re_match_context_t *mctx;
- int fl_longest_match;
- int *p_match_first;
+internal_function
+check_matching (re_match_context_t *mctx, int fl_longest_match,
+ int *p_match_first)
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
reg_errcode_t err;
int match = 0;
int match_last = -1;
@@ -1166,10 +1195,9 @@ check_matching (mctx, fl_longest_match, p_match_first)
/* Check NODE match the current context. */
-static int check_halt_node_context (dfa, node, context)
- const re_dfa_t *dfa;
- int node;
- unsigned int context;
+static int
+internal_function
+check_halt_node_context (const re_dfa_t *dfa, int node, unsigned int context)
{
re_token_type_t type = dfa->nodes[node].type;
unsigned int constraint = dfa->nodes[node].constraint;
@@ -1187,10 +1215,9 @@ static int check_halt_node_context (dfa, node, context)
match the context, return the node. */
static int
-check_halt_state_context (mctx, state, idx)
- const re_match_context_t *mctx;
- const re_dfastate_t *state;
- int idx;
+internal_function
+check_halt_state_context (const re_match_context_t *mctx,
+ const re_dfastate_t *state, int idx)
{
int i;
unsigned int context;
@@ -1210,16 +1237,13 @@ check_halt_state_context (mctx, state, idx)
of errors. */
static int
-proceed_next_node (mctx, nregs, regs, pidx, node, eps_via_nodes, fs)
- const re_match_context_t *mctx;
- regmatch_t *regs;
- int nregs, *pidx, node;
- re_node_set *eps_via_nodes;
- struct re_fail_stack_t *fs;
+internal_function
+proceed_next_node (const re_match_context_t *mctx, int nregs, regmatch_t *regs,
+ int *pidx, int node, re_node_set *eps_via_nodes,
+ struct re_fail_stack_t *fs)
{
- re_dfa_t *const dfa = mctx->dfa;
- int i, err, dest_node;
- dest_node = -1;
+ const re_dfa_t *const dfa = mctx->dfa;
+ int i, err;
if (IS_EPSILON_NODE (dfa->nodes[node].type))
{
re_node_set *cur_nodes = &mctx->state_log[*pidx]->nodes;
@@ -1262,7 +1286,7 @@ proceed_next_node (mctx, nregs, regs, pidx, node, eps_via_nodes, fs)
re_token_type_t type = dfa->nodes[node].type;
#ifdef RE_ENABLE_I18N
- if (ACCEPT_MB_NODE (type))
+ if (dfa->nodes[node].accept_mb)
naccepted = check_node_accept_bytes (dfa, node, &mctx->input, *pidx);
else
#endif /* RE_ENABLE_I18N */
@@ -1285,6 +1309,7 @@ proceed_next_node (mctx, nregs, regs, pidx, node, eps_via_nodes, fs)
if (naccepted == 0)
{
+ int dest_node;
err = re_node_set_insert (eps_via_nodes, node);
if (BE (err < 0, 0))
return -2;
@@ -1298,7 +1323,7 @@ proceed_next_node (mctx, nregs, regs, pidx, node, eps_via_nodes, fs)
if (naccepted != 0
|| check_node_accept (mctx, dfa->nodes + node, *pidx))
{
- dest_node = dfa->nexts[node];
+ int dest_node = dfa->nexts[node];
*pidx = (naccepted == 0) ? *pidx + 1 : *pidx + naccepted;
if (fs && (*pidx > mctx->match_last || mctx->state_log[*pidx] == NULL
|| !re_node_set_contains (&mctx->state_log[*pidx]->nodes,
@@ -1312,11 +1337,9 @@ proceed_next_node (mctx, nregs, regs, pidx, node, eps_via_nodes, fs)
}
static reg_errcode_t
-push_fail_stack (fs, str_idx, dest_node, nregs, regs, eps_via_nodes)
- struct re_fail_stack_t *fs;
- int str_idx, dest_node, nregs;
- regmatch_t *regs;
- re_node_set *eps_via_nodes;
+internal_function
+push_fail_stack (struct re_fail_stack_t *fs, int str_idx, int dest_node,
+ int nregs, regmatch_t *regs, re_node_set *eps_via_nodes)
{
reg_errcode_t err;
int num = fs->num++;
@@ -1341,11 +1364,9 @@ push_fail_stack (fs, str_idx, dest_node, nregs, regs, eps_via_nodes)
}
static int
-pop_fail_stack (fs, pidx, nregs, regs, eps_via_nodes)
- struct re_fail_stack_t *fs;
- int *pidx, nregs;
- regmatch_t *regs;
- re_node_set *eps_via_nodes;
+internal_function
+pop_fail_stack (struct re_fail_stack_t *fs, int *pidx, int nregs,
+ regmatch_t *regs, re_node_set *eps_via_nodes)
{
int num = --fs->num;
assert (num >= 0);
@@ -1363,19 +1384,17 @@ pop_fail_stack (fs, pidx, nregs, regs, eps_via_nodes)
pmatch[i].rm_so == pmatch[i].rm_eo == -1 for 0 < i < nmatch. */
static reg_errcode_t
-set_regs (preg, mctx, nmatch, pmatch, fl_backtrack)
- const regex_t *preg;
- const re_match_context_t *mctx;
- size_t nmatch;
- regmatch_t *pmatch;
- int fl_backtrack;
+internal_function
+set_regs (const regex_t *preg, const re_match_context_t *mctx, size_t nmatch,
+ regmatch_t *pmatch, int fl_backtrack)
{
- re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
- int idx, cur_node, real_nmatch;
+ const re_dfa_t *dfa = (const re_dfa_t *) preg->buffer;
+ int idx, cur_node;
re_node_set eps_via_nodes;
struct re_fail_stack_t *fs;
struct re_fail_stack_t fs_body = { 0, 2, NULL };
regmatch_t *prev_idx_match;
+ int prev_idx_match_malloced = 0;
#ifdef DEBUG
assert (nmatch > 1);
@@ -1392,15 +1411,25 @@ set_regs (preg, mctx, nmatch, pmatch, fl_backtrack)
fs = NULL;
cur_node = dfa->init_node;
- real_nmatch = (nmatch <= preg->re_nsub) ? nmatch : preg->re_nsub + 1;
re_node_set_init_empty (&eps_via_nodes);
- prev_idx_match = (regmatch_t *) alloca (sizeof (regmatch_t) * real_nmatch);
- memcpy (prev_idx_match, pmatch, sizeof (regmatch_t) * real_nmatch);
+ if (__libc_use_alloca (nmatch * sizeof (regmatch_t)))
+ prev_idx_match = (regmatch_t *) alloca (nmatch * sizeof (regmatch_t));
+ else
+ {
+ prev_idx_match = re_malloc (regmatch_t, nmatch);
+ if (prev_idx_match == NULL)
+ {
+ free_fail_stack_return (fs);
+ return REG_ESPACE;
+ }
+ prev_idx_match_malloced = 1;
+ }
+ memcpy (prev_idx_match, pmatch, sizeof (regmatch_t) * nmatch);
for (idx = pmatch[0].rm_so; idx <= pmatch[0].rm_eo ;)
{
- update_regs (dfa, pmatch, prev_idx_match, cur_node, idx, real_nmatch);
+ update_regs (dfa, pmatch, prev_idx_match, cur_node, idx, nmatch);
if (idx == pmatch[0].rm_eo && cur_node == mctx->last_node)
{
@@ -1413,6 +1442,8 @@ set_regs (preg, mctx, nmatch, pmatch, fl_backtrack)
if (reg_idx == nmatch)
{
re_node_set_free (&eps_via_nodes);
+ if (prev_idx_match_malloced)
+ re_free (prev_idx_match);
return free_fail_stack_return (fs);
}
cur_node = pop_fail_stack (fs, &idx, nmatch, pmatch,
@@ -1421,6 +1452,8 @@ set_regs (preg, mctx, nmatch, pmatch, fl_backtrack)
else
{
re_node_set_free (&eps_via_nodes);
+ if (prev_idx_match_malloced)
+ re_free (prev_idx_match);
return REG_NOERROR;
}
}
@@ -1434,6 +1467,8 @@ set_regs (preg, mctx, nmatch, pmatch, fl_backtrack)
if (BE (cur_node == -2, 0))
{
re_node_set_free (&eps_via_nodes);
+ if (prev_idx_match_malloced)
+ re_free (prev_idx_match);
free_fail_stack_return (fs);
return REG_ESPACE;
}
@@ -1443,17 +1478,21 @@ set_regs (preg, mctx, nmatch, pmatch, fl_backtrack)
else
{
re_node_set_free (&eps_via_nodes);
+ if (prev_idx_match_malloced)
+ re_free (prev_idx_match);
return REG_NOMATCH;
}
}
}
re_node_set_free (&eps_via_nodes);
+ if (prev_idx_match_malloced)
+ re_free (prev_idx_match);
return free_fail_stack_return (fs);
}
static reg_errcode_t
-free_fail_stack_return (fs)
- struct re_fail_stack_t *fs;
+internal_function
+free_fail_stack_return (struct re_fail_stack_t *fs)
{
if (fs)
{
@@ -1469,10 +1508,9 @@ free_fail_stack_return (fs)
}
static void
-update_regs (dfa, pmatch, prev_idx_match, cur_node, cur_idx, nmatch)
- re_dfa_t *dfa;
- regmatch_t *pmatch, *prev_idx_match;
- int cur_node, cur_idx, nmatch;
+internal_function
+update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
+ regmatch_t *prev_idx_match, int cur_node, int cur_idx, int nmatch)
{
int type = dfa->nodes[cur_node].type;
if (type == OP_OPEN_SUBEXP)
@@ -1542,9 +1580,8 @@ update_regs (dfa, pmatch, prev_idx_match, cur_node, cur_idx, nmatch)
((state) != NULL && re_node_set_contains (&(state)->nodes, node))
static reg_errcode_t
-sift_states_backward (mctx, sctx)
- re_match_context_t *mctx;
- re_sift_context_t *sctx;
+internal_function
+sift_states_backward (const re_match_context_t *mctx, re_sift_context_t *sctx)
{
reg_errcode_t err;
int null_cnt = 0;
@@ -1601,14 +1638,12 @@ sift_states_backward (mctx, sctx)
}
static reg_errcode_t
-build_sifted_states (mctx, sctx, str_idx, cur_dest)
- re_match_context_t *mctx;
- re_sift_context_t *sctx;
- int str_idx;
- re_node_set *cur_dest;
+internal_function
+build_sifted_states (const re_match_context_t *mctx, re_sift_context_t *sctx,
+ int str_idx, re_node_set *cur_dest)
{
- re_dfa_t *const dfa = mctx->dfa;
- re_node_set *cur_src = &mctx->state_log[str_idx]->non_eps_nodes;
+ const re_dfa_t *const dfa = mctx->dfa;
+ const re_node_set *cur_src = &mctx->state_log[str_idx]->non_eps_nodes;
int i;
/* Then build the next sifted state.
@@ -1624,15 +1659,13 @@ build_sifted_states (mctx, sctx, str_idx, cur_dest)
int naccepted = 0;
int ret;
-#if defined DEBUG || defined RE_ENABLE_I18N
- re_token_type_t type = dfa->nodes[prev_node].type;
-#endif
#ifdef DEBUG
+ re_token_type_t type = dfa->nodes[prev_node].type;
assert (!IS_EPSILON_NODE (type));
#endif
#ifdef RE_ENABLE_I18N
/* If the node may accept `multi byte'. */
- if (ACCEPT_MB_NODE (type))
+ if (dfa->nodes[prev_node].accept_mb)
naccepted = sift_states_iter_mb (mctx, sctx, prev_node,
str_idx, sctx->last_str_idx);
#endif /* RE_ENABLE_I18N */
@@ -1667,9 +1700,8 @@ build_sifted_states (mctx, sctx, str_idx, cur_dest)
/* Helper functions. */
static reg_errcode_t
-clean_state_log_if_needed (mctx, next_state_log_idx)
- re_match_context_t *mctx;
- int next_state_log_idx;
+internal_function
+clean_state_log_if_needed (re_match_context_t *mctx, int next_state_log_idx)
{
int top = mctx->state_log_top;
@@ -1693,11 +1725,9 @@ clean_state_log_if_needed (mctx, next_state_log_idx)
}
static reg_errcode_t
-merge_state_array (dfa, dst, src, num)
- re_dfa_t *dfa;
- re_dfastate_t **dst;
- re_dfastate_t **src;
- int num;
+internal_function
+merge_state_array (const re_dfa_t *dfa, re_dfastate_t **dst,
+ re_dfastate_t **src, int num)
{
int st_idx;
reg_errcode_t err;
@@ -1722,14 +1752,13 @@ merge_state_array (dfa, dst, src, num)
}
static reg_errcode_t
-update_cur_sifted_state (mctx, sctx, str_idx, dest_nodes)
- re_match_context_t *mctx;
- re_sift_context_t *sctx;
- int str_idx;
- re_node_set *dest_nodes;
+internal_function
+update_cur_sifted_state (const re_match_context_t *mctx,
+ re_sift_context_t *sctx, int str_idx,
+ re_node_set *dest_nodes)
{
- re_dfa_t *const dfa = mctx->dfa;
- reg_errcode_t err;
+ const re_dfa_t *const dfa = mctx->dfa;
+ reg_errcode_t err = REG_NOERROR;
const re_node_set *candidates;
candidates = ((mctx->state_log[str_idx] == NULL) ? NULL
: &mctx->state_log[str_idx]->nodes);
@@ -1771,10 +1800,9 @@ update_cur_sifted_state (mctx, sctx, str_idx, dest_nodes)
}
static reg_errcode_t
-add_epsilon_src_nodes (dfa, dest_nodes, candidates)
- re_dfa_t *dfa;
- re_node_set *dest_nodes;
- const re_node_set *candidates;
+internal_function
+add_epsilon_src_nodes (const re_dfa_t *dfa, re_node_set *dest_nodes,
+ const re_node_set *candidates)
{
reg_errcode_t err = REG_NOERROR;
int i;
@@ -1797,11 +1825,9 @@ add_epsilon_src_nodes (dfa, dest_nodes, candidates)
}
static reg_errcode_t
-sub_epsilon_src_nodes (dfa, node, dest_nodes, candidates)
- re_dfa_t *dfa;
- int node;
- re_node_set *dest_nodes;
- const re_node_set *candidates;
+internal_function
+sub_epsilon_src_nodes (const re_dfa_t *dfa, int node, re_node_set *dest_nodes,
+ const re_node_set *candidates)
{
int ecl_idx;
reg_errcode_t err;
@@ -1848,12 +1874,11 @@ sub_epsilon_src_nodes (dfa, node, dest_nodes, candidates)
}
static int
-check_dst_limits (mctx, limits, dst_node, dst_idx, src_node, src_idx)
- re_match_context_t *mctx;
- re_node_set *limits;
- int dst_node, dst_idx, src_node, src_idx;
+internal_function
+check_dst_limits (const re_match_context_t *mctx, re_node_set *limits,
+ int dst_node, int dst_idx, int src_node, int src_idx)
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
int lim_idx, src_pos, dst_pos;
int dst_bkref_idx = search_cur_bkref_entry (mctx, dst_idx);
@@ -1885,12 +1910,12 @@ check_dst_limits (mctx, limits, dst_node, dst_idx, src_node, src_idx)
}
static int
-check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx, from_node, bkref_idx)
- re_match_context_t *mctx;
- int boundaries, subexp_idx, from_node, bkref_idx;
+internal_function
+check_dst_limits_calc_pos_1 (const re_match_context_t *mctx, int boundaries,
+ int subexp_idx, int from_node, int bkref_idx)
{
- re_dfa_t *const dfa = mctx->dfa;
- re_node_set *eclosures = dfa->eclosures + from_node;
+ const re_dfa_t *const dfa = mctx->dfa;
+ const re_node_set *eclosures = dfa->eclosures + from_node;
int node_idx;
/* Else, we are on the boundary: examine the nodes on the epsilon
@@ -1911,8 +1936,9 @@ check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx, from_node, bkref_idx)
if (ent->node != node)
continue;
- if (subexp_idx <= 8 * sizeof (ent->eps_reachable_subexps_map)
- && !(ent->eps_reachable_subexps_map & (1 << subexp_idx)))
+ if (subexp_idx < BITSET_WORD_BITS
+ && !(ent->eps_reachable_subexps_map
+ & ((bitset_word_t) 1 << subexp_idx)))
continue;
/* Recurse trying to reach the OP_OPEN_SUBEXP and
@@ -1938,7 +1964,9 @@ check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx, from_node, bkref_idx)
if (cpos == 0 && (boundaries & 2))
return 0;
- ent->eps_reachable_subexps_map &= ~(1 << subexp_idx);
+ if (subexp_idx < BITSET_WORD_BITS)
+ ent->eps_reachable_subexps_map
+ &= ~((bitset_word_t) 1 << subexp_idx);
}
while (ent++->more);
}
@@ -1963,9 +1991,10 @@ check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx, from_node, bkref_idx)
}
static int
-check_dst_limits_calc_pos (mctx, limit, subexp_idx, from_node, str_idx, bkref_idx)
- re_match_context_t *mctx;
- int limit, subexp_idx, from_node, str_idx, bkref_idx;
+internal_function
+check_dst_limits_calc_pos (const re_match_context_t *mctx, int limit,
+ int subexp_idx, int from_node, int str_idx,
+ int bkref_idx)
{
struct re_backref_cache_entry *lim = mctx->bkref_ents + limit;
int boundaries;
@@ -1992,13 +2021,10 @@ check_dst_limits_calc_pos (mctx, limit, subexp_idx, from_node, str_idx, bkref_id
which are against limitations from DEST_NODES. */
static reg_errcode_t
-check_subexp_limits (dfa, dest_nodes, candidates, limits, bkref_ents, str_idx)
- re_dfa_t *dfa;
- re_node_set *dest_nodes;
- const re_node_set *candidates;
- re_node_set *limits;
- struct re_backref_cache_entry *bkref_ents;
- int str_idx;
+internal_function
+check_subexp_limits (const re_dfa_t *dfa, re_node_set *dest_nodes,
+ const re_node_set *candidates, re_node_set *limits,
+ struct re_backref_cache_entry *bkref_ents, int str_idx)
{
reg_errcode_t err;
int node_idx, lim_idx;
@@ -2083,13 +2109,11 @@ check_subexp_limits (dfa, dest_nodes, candidates, limits, bkref_ents, str_idx)
}
static reg_errcode_t
-sift_states_bkref (mctx, sctx, str_idx, candidates)
- re_match_context_t *mctx;
- re_sift_context_t *sctx;
- int str_idx;
- const re_node_set *candidates;
+internal_function
+sift_states_bkref (const re_match_context_t *mctx, re_sift_context_t *sctx,
+ int str_idx, const re_node_set *candidates)
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
reg_errcode_t err;
int node_idx, node;
re_sift_context_t local_sctx;
@@ -2117,7 +2141,10 @@ sift_states_bkref (mctx, sctx, str_idx, candidates)
enabled_idx = first_idx;
do
{
- int subexp_len, to_idx, dst_node;
+ int subexp_len;
+ int to_idx;
+ int dst_node;
+ int ret;
re_dfastate_t *cur_state;
if (entry->node != node)
@@ -2143,8 +2170,8 @@ sift_states_bkref (mctx, sctx, str_idx, candidates)
}
local_sctx.last_node = node;
local_sctx.last_str_idx = str_idx;
- err = re_node_set_insert (&local_sctx.limits, enabled_idx);
- if (BE (err < 0, 0))
+ ret = re_node_set_insert (&local_sctx.limits, enabled_idx);
+ if (BE (ret < 0, 0))
{
err = REG_ESPACE;
goto free_return;
@@ -2182,12 +2209,11 @@ sift_states_bkref (mctx, sctx, str_idx, candidates)
#ifdef RE_ENABLE_I18N
static int
-sift_states_iter_mb (mctx, sctx, node_idx, str_idx, max_str_idx)
- const re_match_context_t *mctx;
- re_sift_context_t *sctx;
- int node_idx, str_idx, max_str_idx;
+internal_function
+sift_states_iter_mb (const re_match_context_t *mctx, re_sift_context_t *sctx,
+ int node_idx, int str_idx, int max_str_idx)
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
int naccepted;
/* Check the node can accept `multi byte'. */
naccepted = check_node_accept_bytes (dfa, node_idx, &mctx->input, str_idx);
@@ -2213,12 +2239,10 @@ sift_states_iter_mb (mctx, sctx, node_idx, str_idx, max_str_idx)
update the destination of STATE_LOG. */
static re_dfastate_t *
-transit_state (err, mctx, state)
- reg_errcode_t *err;
- re_match_context_t *mctx;
- re_dfastate_t *state;
+internal_function
+transit_state (reg_errcode_t *err, re_match_context_t *mctx,
+ re_dfastate_t *state)
{
- re_dfa_t *const dfa = mctx->dfa;
re_dfastate_t **trtable;
unsigned char ch;
@@ -2233,21 +2257,22 @@ transit_state (err, mctx, state)
#endif /* RE_ENABLE_I18N */
/* Then decide the next state with the single byte. */
- if (1)
+#if 0
+ if (0)
+ /* don't use transition table */
+ return transit_state_sb (err, mctx, state);
+#endif
+
+ /* Use transition table */
+ ch = re_string_fetch_byte (&mctx->input);
+ for (;;)
{
- /* Use transition table */
- ch = re_string_fetch_byte (&mctx->input);
trtable = state->trtable;
- if (trtable == NULL)
- {
- trtable = build_trtable (dfa, state);
- if (trtable == NULL)
- {
- *err = REG_ESPACE;
- return NULL;
- }
- }
- if (BE (state->word_trtable, 0))
+ if (BE (trtable != NULL, 1))
+ return trtable[ch];
+
+ trtable = state->word_trtable;
+ if (BE (trtable != NULL, 1))
{
unsigned int context;
context
@@ -2259,24 +2284,24 @@ transit_state (err, mctx, state)
else
return trtable[ch];
}
- else
- return trtable[ch];
+
+ if (!build_trtable (mctx->dfa, state))
+ {
+ *err = REG_ESPACE;
+ return NULL;
+ }
+
+ /* Retry, we now have a transition table. */
}
-#if 0
- else
- /* don't use transition table */
- return transit_state_sb (err, mctx, state);
-#endif
}
/* Update the state_log if we need */
re_dfastate_t *
-merge_state_with_log (err, mctx, next_state)
- reg_errcode_t *err;
- re_match_context_t *mctx;
- re_dfastate_t *next_state;
+internal_function
+merge_state_with_log (reg_errcode_t *err, re_match_context_t *mctx,
+ re_dfastate_t *next_state)
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
int cur_idx = re_string_cur_idx (&mctx->input);
if (cur_idx > mctx->state_log_top)
@@ -2351,11 +2376,10 @@ merge_state_with_log (err, mctx, next_state)
multi-byte match, then look in the log for a state
from which to restart matching. */
re_dfastate_t *
-find_recover_state (err, mctx)
- reg_errcode_t *err;
- re_match_context_t *mctx;
+internal_function
+find_recover_state (reg_errcode_t *err, re_match_context_t *mctx)
{
- re_dfastate_t *cur_state = NULL;
+ re_dfastate_t *cur_state;
do
{
int max = mctx->state_log_top;
@@ -2371,7 +2395,7 @@ find_recover_state (err, mctx)
cur_state = merge_state_with_log (err, mctx, NULL);
}
- while (err == REG_NOERROR && cur_state == NULL);
+ while (*err == REG_NOERROR && cur_state == NULL);
return cur_state;
}
@@ -2383,12 +2407,11 @@ find_recover_state (err, mctx)
correspoding back references. */
static reg_errcode_t
-check_subexp_matching_top (mctx, cur_nodes, str_idx)
- re_match_context_t *mctx;
- re_node_set *cur_nodes;
- int str_idx;
+internal_function
+check_subexp_matching_top (re_match_context_t *mctx, re_node_set *cur_nodes,
+ int str_idx)
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
int node_idx;
reg_errcode_t err;
@@ -2401,8 +2424,9 @@ check_subexp_matching_top (mctx, cur_nodes, str_idx)
{
int node = cur_nodes->elems[node_idx];
if (dfa->nodes[node].type == OP_OPEN_SUBEXP
- && dfa->nodes[node].opr.idx < (8 * sizeof (dfa->used_bkref_map))
- && dfa->used_bkref_map & (1 << dfa->nodes[node].opr.idx))
+ && dfa->nodes[node].opr.idx < BITSET_WORD_BITS
+ && (dfa->used_bkref_map
+ & ((bitset_word_t) 1 << dfa->nodes[node].opr.idx)))
{
err = match_ctx_add_subtop (mctx, node, str_idx);
if (BE (err != REG_NOERROR, 0))
@@ -2417,12 +2441,10 @@ check_subexp_matching_top (mctx, cur_nodes, str_idx)
accepting the current input byte. */
static re_dfastate_t *
-transit_state_sb (err, mctx, state)
- reg_errcode_t *err;
- re_match_context_t *mctx;
- re_dfastate_t *state;
+transit_state_sb (reg_errcode_t *err, re_match_context_t *mctx,
+ re_dfastate_t *state)
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
re_node_set next_nodes;
re_dfastate_t *next_state;
int node_cnt, cur_str_idx = re_string_cur_idx (&mctx->input);
@@ -2458,11 +2480,10 @@ transit_state_sb (err, mctx, state)
#ifdef RE_ENABLE_I18N
static reg_errcode_t
-transit_state_mb (mctx, pstate)
- re_match_context_t *mctx;
- re_dfastate_t *pstate;
+internal_function
+transit_state_mb (re_match_context_t *mctx, re_dfastate_t *pstate)
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
reg_errcode_t err;
int i;
@@ -2470,10 +2491,13 @@ transit_state_mb (mctx, pstate)
{
re_node_set dest_nodes, *new_nodes;
int cur_node_idx = pstate->nodes.elems[i];
- int naccepted = 0, dest_idx;
+ int naccepted, dest_idx;
unsigned int context;
re_dfastate_t *dest_state;
+ if (!dfa->nodes[cur_node_idx].accept_mb)
+ continue;
+
if (dfa->nodes[cur_node_idx].constraint)
{
context = re_string_context_at (&mctx->input,
@@ -2485,9 +2509,8 @@ transit_state_mb (mctx, pstate)
}
/* How many bytes the node can accept? */
- if (ACCEPT_MB_NODE (dfa->nodes[cur_node_idx].type))
- naccepted = check_node_accept_bytes (dfa, cur_node_idx, &mctx->input,
- re_string_cur_idx (&mctx->input));
+ naccepted = check_node_accept_bytes (dfa, cur_node_idx, &mctx->input,
+ re_string_cur_idx (&mctx->input));
if (naccepted == 0)
continue;
@@ -2501,9 +2524,7 @@ transit_state_mb (mctx, pstate)
#ifdef DEBUG
assert (dfa->nexts[cur_node_idx] != -1);
#endif
- /* `cur_node_idx' may point the entity of the OP_CONTEXT_NODE,
- then we use pstate->nodes.elems[i] instead. */
- new_nodes = dfa->eclosures + dfa->nexts[pstate->nodes.elems[i]];
+ new_nodes = dfa->eclosures + dfa->nexts[cur_node_idx];
dest_state = mctx->state_log[dest_idx];
if (dest_state == NULL)
@@ -2515,7 +2536,8 @@ transit_state_mb (mctx, pstate)
if (BE (err != REG_NOERROR, 0))
return err;
}
- context = re_string_context_at (&mctx->input, dest_idx - 1, mctx->eflags);
+ context = re_string_context_at (&mctx->input, dest_idx - 1,
+ mctx->eflags);
mctx->state_log[dest_idx]
= re_acquire_state_context (&err, dfa, &dest_nodes, context);
if (dest_state != NULL)
@@ -2528,11 +2550,10 @@ transit_state_mb (mctx, pstate)
#endif /* RE_ENABLE_I18N */
static reg_errcode_t
-transit_state_bkref (mctx, nodes)
- re_match_context_t *mctx;
- const re_node_set *nodes;
+internal_function
+transit_state_bkref (re_match_context_t *mctx, const re_node_set *nodes)
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
reg_errcode_t err;
int i;
int cur_str_idx = re_string_cur_idx (&mctx->input);
@@ -2643,18 +2664,18 @@ transit_state_bkref (mctx, nodes)
delay these checking for prune_impossible_nodes(). */
static reg_errcode_t
-get_subexp (mctx, bkref_node, bkref_str_idx)
- re_match_context_t *mctx;
- int bkref_node, bkref_str_idx;
+internal_function
+get_subexp (re_match_context_t *mctx, int bkref_node, int bkref_str_idx)
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
int subexp_num, sub_top_idx;
const char *buf = (const char *) re_string_get_buffer (&mctx->input);
/* Return if we have already checked BKREF_NODE at BKREF_STR_IDX. */
int cache_idx = search_cur_bkref_entry (mctx, bkref_str_idx);
if (cache_idx != -1)
{
- const struct re_backref_cache_entry *entry = mctx->bkref_ents + cache_idx;
+ const struct re_backref_cache_entry *entry
+ = mctx->bkref_ents + cache_idx;
do
if (entry->node == bkref_node)
return REG_NOERROR; /* We already checked it. */
@@ -2701,7 +2722,8 @@ get_subexp (mctx, bkref_node, bkref_str_idx)
buf = (const char *) re_string_get_buffer (&mctx->input);
}
if (memcmp (buf + bkref_str_off, buf + sl_str, sl_str_diff) != 0)
- break; /* We don't need to search this sub expression any more. */
+ /* We don't need to search this sub expression any more. */
+ break;
}
bkref_str_off += sl_str_diff;
sl_str += sl_str_diff;
@@ -2752,7 +2774,8 @@ get_subexp (mctx, bkref_node, bkref_str_idx)
continue;
/* Does this state have a ')' of the sub expression? */
nodes = &mctx->state_log[sl_str]->nodes;
- cls_node = find_subexp_node (dfa, nodes, subexp_num, OP_CLOSE_SUBEXP);
+ cls_node = find_subexp_node (dfa, nodes, subexp_num,
+ OP_CLOSE_SUBEXP);
if (cls_node == -1)
continue; /* No. */
if (sub_top->path == NULL)
@@ -2765,7 +2788,8 @@ get_subexp (mctx, bkref_node, bkref_str_idx)
/* Can the OP_OPEN_SUBEXP node arrive the OP_CLOSE_SUBEXP node
in the current context? */
err = check_arrival (mctx, sub_top->path, sub_top->node,
- sub_top->str_idx, cls_node, sl_str, OP_CLOSE_SUBEXP);
+ sub_top->str_idx, cls_node, sl_str,
+ OP_CLOSE_SUBEXP);
if (err == REG_NOMATCH)
continue;
if (BE (err != REG_NOERROR, 0))
@@ -2789,17 +2813,16 @@ get_subexp (mctx, bkref_node, bkref_str_idx)
and SUB_LAST. */
static reg_errcode_t
-get_subexp_sub (mctx, sub_top, sub_last, bkref_node, bkref_str)
- re_match_context_t *mctx;
- const re_sub_match_top_t *sub_top;
- re_sub_match_last_t *sub_last;
- int bkref_node, bkref_str;
+internal_function
+get_subexp_sub (re_match_context_t *mctx, const re_sub_match_top_t *sub_top,
+ re_sub_match_last_t *sub_last, int bkref_node, int bkref_str)
{
reg_errcode_t err;
int to_idx;
/* Can the subexpression arrive the back reference? */
err = check_arrival (mctx, &sub_last->path, sub_last->node,
- sub_last->str_idx, bkref_node, bkref_str, OP_OPEN_SUBEXP);
+ sub_last->str_idx, bkref_node, bkref_str,
+ OP_OPEN_SUBEXP);
if (err != REG_NOERROR)
return err;
err = match_ctx_add_entry (mctx, bkref_node, bkref_str, sub_top->str_idx,
@@ -2819,10 +2842,9 @@ get_subexp_sub (mctx, sub_top, sub_last, bkref_node, bkref_str)
E.g. RE: (a){2} */
static int
-find_subexp_node (dfa, nodes, subexp_idx, type)
- const re_dfa_t *dfa;
- const re_node_set *nodes;
- int subexp_idx, type;
+internal_function
+find_subexp_node (const re_dfa_t *dfa, const re_node_set *nodes,
+ int subexp_idx, int type)
{
int cls_idx;
for (cls_idx = 0; cls_idx < nodes->nelem; ++cls_idx)
@@ -2842,14 +2864,12 @@ find_subexp_node (dfa, nodes, subexp_idx, type)
Return REG_NOERROR if it can arrive, or REG_NOMATCH otherwise. */
static reg_errcode_t
-check_arrival (mctx, path, top_node, top_str, last_node, last_str,
- type)
- re_match_context_t *mctx;
- state_array_t *path;
- int top_node, top_str, last_node, last_str, type;
+internal_function
+check_arrival (re_match_context_t *mctx, state_array_t *path, int top_node,
+ int top_str, int last_node, int last_str, int type)
{
- re_dfa_t *const dfa = mctx->dfa;
- reg_errcode_t err;
+ const re_dfa_t *const dfa = mctx->dfa;
+ reg_errcode_t err = REG_NOERROR;
int subexp_num, backup_cur_idx, str_idx, null_cnt;
re_dfastate_t *cur_state = NULL;
re_node_set *cur_nodes, next_nodes;
@@ -2864,7 +2884,7 @@ check_arrival (mctx, path, top_node, top_str, last_node, last_str,
int old_alloc = path->alloc;
path->alloc += last_str + mctx->max_mb_elem_len + 1;
new_array = re_realloc (path->array, re_dfastate_t *, path->alloc);
- if (new_array == NULL)
+ if (BE (new_array == NULL, 0))
{
path->alloc = old_alloc;
return REG_ESPACE;
@@ -2874,7 +2894,7 @@ check_arrival (mctx, path, top_node, top_str, last_node, last_str,
sizeof (re_dfastate_t *) * (path->alloc - old_alloc));
}
- str_idx = path->next_idx == 0 ? top_str : path->next_idx;
+ str_idx = path->next_idx ?: top_str;
/* Temporary modify MCTX. */
backup_state_log = mctx->state_log;
@@ -2902,7 +2922,7 @@ check_arrival (mctx, path, top_node, top_str, last_node, last_str,
if (cur_state && cur_state->has_backref)
{
err = re_node_set_init_copy (&next_nodes, &cur_state->nodes);
- if (BE ( err != REG_NOERROR, 0))
+ if (BE (err != REG_NOERROR, 0))
return err;
}
else
@@ -2914,7 +2934,7 @@ check_arrival (mctx, path, top_node, top_str, last_node, last_str,
{
err = expand_bkref_cache (mctx, &next_nodes, str_idx,
subexp_num, type);
- if (BE ( err != REG_NOERROR, 0))
+ if (BE (err != REG_NOERROR, 0))
{
re_node_set_free (&next_nodes);
return err;
@@ -2945,7 +2965,8 @@ check_arrival (mctx, path, top_node, top_str, last_node, last_str,
if (cur_state)
{
err = check_arrival_add_next_nodes (mctx, str_idx,
- &cur_state->non_eps_nodes, &next_nodes);
+ &cur_state->non_eps_nodes,
+ &next_nodes);
if (BE (err != REG_NOERROR, 0))
{
re_node_set_free (&next_nodes);
@@ -2963,7 +2984,7 @@ check_arrival (mctx, path, top_node, top_str, last_node, last_str,
}
err = expand_bkref_cache (mctx, &next_nodes, str_idx,
subexp_num, type);
- if (BE ( err != REG_NOERROR, 0))
+ if (BE (err != REG_NOERROR, 0))
{
re_node_set_free (&next_nodes);
return err;
@@ -3004,30 +3025,27 @@ check_arrival (mctx, path, top_node, top_str, last_node, last_str,
Can't we unify them? */
static reg_errcode_t
-check_arrival_add_next_nodes (mctx, str_idx, cur_nodes, next_nodes)
- re_match_context_t *mctx;
- int str_idx;
- re_node_set *cur_nodes, *next_nodes;
+internal_function
+check_arrival_add_next_nodes (re_match_context_t *mctx, int str_idx,
+ re_node_set *cur_nodes, re_node_set *next_nodes)
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
int result;
int cur_idx;
- reg_errcode_t err;
+ reg_errcode_t err = REG_NOERROR;
re_node_set union_set;
re_node_set_init_empty (&union_set);
for (cur_idx = 0; cur_idx < cur_nodes->nelem; ++cur_idx)
{
int naccepted = 0;
int cur_node = cur_nodes->elems[cur_idx];
-#if defined DEBUG || defined RE_ENABLE_I18N
- re_token_type_t type = dfa->nodes[cur_node].type;
-#endif
#ifdef DEBUG
+ re_token_type_t type = dfa->nodes[cur_node].type;
assert (!IS_EPSILON_NODE (type));
#endif
#ifdef RE_ENABLE_I18N
/* If the node may accept `multi byte'. */
- if (ACCEPT_MB_NODE (type))
+ if (dfa->nodes[cur_node].accept_mb)
{
naccepted = check_node_accept_bytes (dfa, cur_node, &mctx->input,
str_idx);
@@ -3086,10 +3104,9 @@ check_arrival_add_next_nodes (mctx, str_idx, cur_nodes, next_nodes)
*/
static reg_errcode_t
-check_arrival_expand_ecl (dfa, cur_nodes, ex_subexp, type)
- re_dfa_t *dfa;
- re_node_set *cur_nodes;
- int ex_subexp, type;
+internal_function
+check_arrival_expand_ecl (const re_dfa_t *dfa, re_node_set *cur_nodes,
+ int ex_subexp, int type)
{
reg_errcode_t err;
int idx, outside_node;
@@ -3106,7 +3123,7 @@ check_arrival_expand_ecl (dfa, cur_nodes, ex_subexp, type)
for (idx = 0; idx < cur_nodes->nelem; ++idx)
{
int cur_node = cur_nodes->elems[idx];
- re_node_set *eclosure = dfa->eclosures + cur_node;
+ const re_node_set *eclosure = dfa->eclosures + cur_node;
outside_node = find_subexp_node (dfa, eclosure, ex_subexp, type);
if (outside_node == -1)
{
@@ -3140,10 +3157,9 @@ check_arrival_expand_ecl (dfa, cur_nodes, ex_subexp, type)
problematic append it to DST_NODES. */
static reg_errcode_t
-check_arrival_expand_ecl_sub (dfa, dst_nodes, target, ex_subexp, type)
- re_dfa_t *dfa;
- int target, ex_subexp, type;
- re_node_set *dst_nodes;
+internal_function
+check_arrival_expand_ecl_sub (const re_dfa_t *dfa, re_node_set *dst_nodes,
+ int target, int ex_subexp, int type)
{
int cur_node;
for (cur_node = target; !re_node_set_contains (dst_nodes, cur_node);)
@@ -3185,13 +3201,11 @@ check_arrival_expand_ecl_sub (dfa, dst_nodes, target, ex_subexp, type)
in MCTX->BKREF_ENTS. */
static reg_errcode_t
-expand_bkref_cache (mctx, cur_nodes, cur_str, subexp_num,
- type)
- re_match_context_t *mctx;
- int cur_str, subexp_num, type;
- re_node_set *cur_nodes;
+internal_function
+expand_bkref_cache (re_match_context_t *mctx, re_node_set *cur_nodes,
+ int cur_str, int subexp_num, int type)
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
reg_errcode_t err;
int cache_idx_start = search_cur_bkref_entry (mctx, cur_str);
struct re_backref_cache_entry *ent;
@@ -3273,45 +3287,48 @@ expand_bkref_cache (mctx, cur_nodes, cur_str, subexp_num,
}
/* Build transition table for the state.
- Return the new table if succeeded, otherwise return NULL. */
+ Return 1 if succeeded, otherwise return NULL. */
-static re_dfastate_t **
-build_trtable (dfa, state)
- re_dfa_t *dfa;
- re_dfastate_t *state;
+static int
+internal_function
+build_trtable (const re_dfa_t *dfa, re_dfastate_t *state)
{
reg_errcode_t err;
- int i, j, ch;
- unsigned int elem, mask;
- int dests_node_malloced = 0, dest_states_malloced = 0;
+ int i, j, ch, need_word_trtable = 0;
+ bitset_word_t elem, mask;
+ bool dests_node_malloced = false;
+ bool dest_states_malloced = false;
int ndests; /* Number of the destination states from `state'. */
re_dfastate_t **trtable;
re_dfastate_t **dest_states = NULL, **dest_states_word, **dest_states_nl;
re_node_set follows, *dests_node;
- bitset *dests_ch;
- bitset acceptable;
+ bitset_t *dests_ch;
+ bitset_t acceptable;
+
+ struct dests_alloc
+ {
+ re_node_set dests_node[SBC_MAX];
+ bitset_t dests_ch[SBC_MAX];
+ } *dests_alloc;
/* We build DFA states which corresponds to the destination nodes
from `state'. `dests_node[i]' represents the nodes which i-th
destination state contains, and `dests_ch[i]' represents the
characters which i-th destination state accepts. */
-#ifdef _LIBC
- if (__libc_use_alloca ((sizeof (re_node_set) + sizeof (bitset)) * SBC_MAX))
- dests_node = (re_node_set *)
- alloca ((sizeof (re_node_set) + sizeof (bitset)) * SBC_MAX);
+ if (__libc_use_alloca (sizeof (struct dests_alloc)))
+ dests_alloc = (struct dests_alloc *) alloca (sizeof (struct dests_alloc));
else
-#endif
{
- dests_node = (re_node_set *)
- malloc ((sizeof (re_node_set) + sizeof (bitset)) * SBC_MAX);
- if (BE (dests_node == NULL, 0))
- return NULL;
- dests_node_malloced = 1;
+ dests_alloc = re_malloc (struct dests_alloc, 1);
+ if (BE (dests_alloc == NULL, 0))
+ return 0;
+ dests_node_malloced = true;
}
- dests_ch = (bitset *) (dests_node + SBC_MAX);
+ dests_node = dests_alloc->dests_node;
+ dests_ch = dests_alloc->dests_ch;
/* Initialize transiton table. */
- state->word_trtable = 0;
+ state->word_trtable = state->trtable = NULL;
/* At first, group all nodes belonging to `state' into several
destinations. */
@@ -3319,31 +3336,29 @@ build_trtable (dfa, state)
if (BE (ndests <= 0, 0))
{
if (dests_node_malloced)
- free (dests_node);
- /* Return NULL in case of an error, trtable otherwise. */
+ free (dests_alloc);
+ /* Return 0 in case of an error, 1 otherwise. */
if (ndests == 0)
{
state->trtable = (re_dfastate_t **)
- calloc (sizeof (re_dfastate_t *), SBC_MAX);;
- return state->trtable;
+ calloc (sizeof (re_dfastate_t *), SBC_MAX);
+ return 1;
}
- return NULL;
+ return 0;
}
err = re_node_set_alloc (&follows, ndests + 1);
if (BE (err != REG_NOERROR, 0))
goto out_free;
-#ifdef _LIBC
- if (__libc_use_alloca ((sizeof (re_node_set) + sizeof (bitset)) * SBC_MAX
+ if (__libc_use_alloca ((sizeof (re_node_set) + sizeof (bitset_t)) * SBC_MAX
+ ndests * 3 * sizeof (re_dfastate_t *)))
dest_states = (re_dfastate_t **)
- alloca (ndests * 3 * sizeof (re_dfastate_t *));
+ alloca (ndests * 3 * sizeof (re_dfastate_t *));
else
-#endif
{
dest_states = (re_dfastate_t **)
- malloc (ndests * 3 * sizeof (re_dfastate_t *));
+ malloc (ndests * 3 * sizeof (re_dfastate_t *));
if (BE (dest_states == NULL, 0))
{
out_free:
@@ -3353,10 +3368,10 @@ out_free:
for (i = 0; i < ndests; ++i)
re_node_set_free (dests_node + i);
if (dests_node_malloced)
- free (dests_node);
- return NULL;
+ free (dests_alloc);
+ return 0;
}
- dest_states_malloced = 1;
+ dest_states_malloced = true;
}
dest_states_word = dest_states + ndests;
dest_states_nl = dest_states_word + ndests;
@@ -3390,9 +3405,8 @@ out_free:
if (BE (dest_states_word[i] == NULL && err != REG_NOERROR, 0))
goto out_free;
- if (dest_states[i] != dest_states_word[i]
- && dfa->mb_cur_max > 1)
- state->word_trtable = 1;
+ if (dest_states[i] != dest_states_word[i] && dfa->mb_cur_max > 1)
+ need_word_trtable = 1;
dest_states_nl[i] = re_acquire_state_context (&err, dfa, &follows,
CONTEXT_NEWLINE);
@@ -3407,19 +3421,20 @@ out_free:
bitset_merge (acceptable, dests_ch[i]);
}
- if (!BE (state->word_trtable, 0))
+ if (!BE (need_word_trtable, 0))
{
/* We don't care about whether the following character is a word
character, or we are in a single-byte character set so we can
discern by looking at the character code: allocate a
256-entry transition table. */
- trtable = (re_dfastate_t **) calloc (sizeof (re_dfastate_t *), SBC_MAX);
+ trtable = state->trtable =
+ (re_dfastate_t **) calloc (sizeof (re_dfastate_t *), SBC_MAX);
if (BE (trtable == NULL, 0))
goto out_free;
/* For all characters ch...: */
- for (i = 0; i < BITSET_UINTS; ++i)
- for (ch = i * UINT_BITS, elem = acceptable[i], mask = 1;
+ for (i = 0; i < BITSET_WORDS; ++i)
+ for (ch = i * BITSET_WORD_BITS, elem = acceptable[i], mask = 1;
elem;
mask <<= 1, elem >>= 1, ++ch)
if (BE (elem & 1, 0))
@@ -3443,14 +3458,14 @@ out_free:
by looking at the character code: build two 256-entry
transition tables, one starting at trtable[0] and one
starting at trtable[SBC_MAX]. */
- trtable = (re_dfastate_t **) calloc (sizeof (re_dfastate_t *),
- 2 * SBC_MAX);
+ trtable = state->word_trtable =
+ (re_dfastate_t **) calloc (sizeof (re_dfastate_t *), 2 * SBC_MAX);
if (BE (trtable == NULL, 0))
goto out_free;
/* For all characters ch...: */
- for (i = 0; i < BITSET_UINTS; ++i)
- for (ch = i * UINT_BITS, elem = acceptable[i], mask = 1;
+ for (i = 0; i < BITSET_WORDS; ++i)
+ for (ch = i * BITSET_WORD_BITS, elem = acceptable[i], mask = 1;
elem;
mask <<= 1, elem >>= 1, ++ch)
if (BE (elem & 1, 0))
@@ -3475,7 +3490,7 @@ out_free:
{
/* k-th destination accepts newline character. */
trtable[NEWLINE_CHAR] = dest_states_nl[j];
- if (state->word_trtable)
+ if (need_word_trtable)
trtable[NEWLINE_CHAR + SBC_MAX] = dest_states_nl[j];
/* There must be only one destination which accepts
newline. See group_nodes_into_DFAstates. */
@@ -3491,10 +3506,9 @@ out_free:
re_node_set_free (dests_node + i);
if (dests_node_malloced)
- free (dests_node);
+ free (dests_alloc);
- state->trtable = trtable;
- return trtable;
+ return 1;
}
/* Group all nodes belonging to STATE into several destinations.
@@ -3503,17 +3517,15 @@ out_free:
to DEST_CH[i]. This function return the number of destinations. */
static int
-group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch)
- re_dfa_t *dfa;
- const re_dfastate_t *state;
- re_node_set *dests_node;
- bitset *dests_ch;
+internal_function
+group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
+ re_node_set *dests_node, bitset_t *dests_ch)
{
reg_errcode_t err;
int result;
int i, j, k;
int ndests; /* Number of the destinations from `state'. */
- bitset accepts; /* Characters a node can accept. */
+ bitset_t accepts; /* Characters a node can accept. */
const re_node_set *cur_nodes = &state->nodes;
bitset_empty (accepts);
ndests = 0;
@@ -3548,7 +3560,7 @@ group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch)
#ifdef RE_ENABLE_I18N
else if (type == OP_UTF8_PERIOD)
{
- memset (accepts, 255, sizeof (unsigned int) * BITSET_UINTS / 2);
+ memset (accepts, '\xff', sizeof (bitset_t) / 2);
if (!(dfa->syntax & RE_DOT_NEWLINE))
bitset_clear (accepts, '\n');
if (dfa->syntax & RE_DOT_NOT_NULL)
@@ -3564,7 +3576,7 @@ group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch)
{
if (constraint & NEXT_NEWLINE_CONSTRAINT)
{
- int accepts_newline = bitset_contain (accepts, NEWLINE_CHAR);
+ bool accepts_newline = bitset_contain (accepts, NEWLINE_CHAR);
bitset_empty (accepts);
if (accepts_newline)
bitset_set (accepts, NEWLINE_CHAR);
@@ -3579,7 +3591,7 @@ group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch)
if (constraint & NEXT_WORD_CONSTRAINT)
{
- unsigned int any_set = 0;
+ bitset_word_t any_set = 0;
if (type == CHARACTER && !node->word_char)
{
bitset_empty (accepts);
@@ -3587,18 +3599,18 @@ group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch)
}
#ifdef RE_ENABLE_I18N
if (dfa->mb_cur_max > 1)
- for (j = 0; j < BITSET_UINTS; ++j)
+ for (j = 0; j < BITSET_WORDS; ++j)
any_set |= (accepts[j] &= (dfa->word_char[j] | ~dfa->sb_char[j]));
else
#endif
- for (j = 0; j < BITSET_UINTS; ++j)
+ for (j = 0; j < BITSET_WORDS; ++j)
any_set |= (accepts[j] &= dfa->word_char[j]);
if (!any_set)
continue;
}
if (constraint & NEXT_NOTWORD_CONSTRAINT)
{
- unsigned int any_set = 0;
+ bitset_word_t any_set = 0;
if (type == CHARACTER && node->word_char)
{
bitset_empty (accepts);
@@ -3606,11 +3618,11 @@ group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch)
}
#ifdef RE_ENABLE_I18N
if (dfa->mb_cur_max > 1)
- for (j = 0; j < BITSET_UINTS; ++j)
+ for (j = 0; j < BITSET_WORDS; ++j)
any_set |= (accepts[j] &= ~(dfa->word_char[j] & dfa->sb_char[j]));
else
#endif
- for (j = 0; j < BITSET_UINTS; ++j)
+ for (j = 0; j < BITSET_WORDS; ++j)
any_set |= (accepts[j] &= ~dfa->word_char[j]);
if (!any_set)
continue;
@@ -3621,10 +3633,10 @@ group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch)
state. Above, we make sure that accepts is not empty. */
for (j = 0; j < ndests; ++j)
{
- bitset intersec; /* Intersection sets, see below. */
- bitset remains;
+ bitset_t intersec; /* Intersection sets, see below. */
+ bitset_t remains;
/* Flags, see below. */
- int has_intersec, not_subset, not_consumed;
+ bitset_word_t has_intersec, not_subset, not_consumed;
/* Optimization, skip if this state doesn't accept the character. */
if (type == CHARACTER && !bitset_contain (dests_ch[j], node->opr.c))
@@ -3632,7 +3644,7 @@ group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch)
/* Enumerate the intersection set of this state and `accepts'. */
has_intersec = 0;
- for (k = 0; k < BITSET_UINTS; ++k)
+ for (k = 0; k < BITSET_WORDS; ++k)
has_intersec |= intersec[k] = accepts[k] & dests_ch[j][k];
/* And skip if the intersection set is empty. */
if (!has_intersec)
@@ -3640,7 +3652,7 @@ group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch)
/* Then check if this state is a subset of `accepts'. */
not_subset = not_consumed = 0;
- for (k = 0; k < BITSET_UINTS; ++k)
+ for (k = 0; k < BITSET_WORDS; ++k)
{
not_subset |= remains[k] = ~accepts[k] & dests_ch[j][k];
not_consumed |= accepts[k] = accepts[k] & ~dests_ch[j][k];
@@ -3695,10 +3707,9 @@ group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch)
can only accept one byte. */
static int
-check_node_accept_bytes (dfa, node_idx, input, str_idx)
- re_dfa_t *dfa;
- int node_idx, str_idx;
- const re_string_t *input;
+internal_function
+check_node_accept_bytes (const re_dfa_t *dfa, int node_idx,
+ const re_string_t *input, int str_idx)
{
const re_token_t *node = dfa->nodes + node_idx;
int char_len, elem_len;
@@ -3779,8 +3790,8 @@ check_node_accept_bytes (dfa, node_idx, input, str_idx)
{
const re_charset_t *cset = node->opr.mbcset;
# ifdef _LIBC
- const unsigned char *pin = ((char *) re_string_get_buffer (input)
- + str_idx);
+ const unsigned char *pin
+ = ((const unsigned char *) re_string_get_buffer (input) + str_idx);
int j;
uint32_t nrules;
# endif /* _LIBC */
@@ -3932,9 +3943,8 @@ check_node_accept_bytes (dfa, node_idx, input, str_idx)
# ifdef _LIBC
static unsigned int
-find_collation_sequence_value (mbs, mbs_len)
- const unsigned char *mbs;
- size_t mbs_len;
+internal_function
+find_collation_sequence_value (const unsigned char *mbs, size_t mbs_len)
{
uint32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
if (nrules == 0)
@@ -3996,10 +4006,9 @@ find_collation_sequence_value (mbs, mbs_len)
byte of the INPUT. */
static int
-check_node_accept (mctx, node, idx)
- const re_match_context_t *mctx;
- const re_token_t *node;
- int idx;
+internal_function
+check_node_accept (const re_match_context_t *mctx, const re_token_t *node,
+ int idx)
{
unsigned char ch;
ch = re_string_byte_at (&mctx->input, idx);
@@ -4047,8 +4056,8 @@ check_node_accept (mctx, node, idx)
/* Extend the buffers, if the buffers have run out. */
static reg_errcode_t
-extend_buffers (mctx)
- re_match_context_t *mctx;
+internal_function
+extend_buffers (re_match_context_t *mctx)
{
reg_errcode_t ret;
re_string_t *pstr = &mctx->input;
@@ -4106,9 +4115,8 @@ extend_buffers (mctx)
/* Initialize MCTX. */
static reg_errcode_t
-match_ctx_init (mctx, eflags, n)
- re_match_context_t *mctx;
- int eflags, n;
+internal_function
+match_ctx_init (re_match_context_t *mctx, int eflags, int n)
{
mctx->eflags = eflags;
mctx->match_last = -1;
@@ -4135,8 +4143,8 @@ match_ctx_init (mctx, eflags, n)
of the input, or changes the input string. */
static void
-match_ctx_clean (mctx)
- re_match_context_t *mctx;
+internal_function
+match_ctx_clean (re_match_context_t *mctx)
{
int st_idx;
for (st_idx = 0; st_idx < mctx->nsub_tops; ++st_idx)
@@ -4165,8 +4173,8 @@ match_ctx_clean (mctx)
/* Free all the memory associated with MCTX. */
static void
-match_ctx_free (mctx)
- re_match_context_t *mctx;
+internal_function
+match_ctx_free (re_match_context_t *mctx)
{
/* First, free all the memory associated with MCTX->SUB_TOPS. */
match_ctx_clean (mctx);
@@ -4180,9 +4188,9 @@ match_ctx_free (mctx)
*/
static reg_errcode_t
-match_ctx_add_entry (mctx, node, str_idx, from, to)
- re_match_context_t *mctx;
- int node, str_idx, from, to;
+internal_function
+match_ctx_add_entry (re_match_context_t *mctx, int node, int str_idx, int from,
+ int to)
{
if (mctx->nbkref_ents >= mctx->abkref_ents)
{
@@ -4229,9 +4237,8 @@ match_ctx_add_entry (mctx, node, str_idx, from, to)
found. Note that MCTX->BKREF_ENTS is already sorted by MCTX->STR_IDX. */
static int
-search_cur_bkref_entry (mctx, str_idx)
- re_match_context_t *mctx;
- int str_idx;
+internal_function
+search_cur_bkref_entry (const re_match_context_t *mctx, int str_idx)
{
int left, right, mid, last;
last = right = mctx->nbkref_ents;
@@ -4253,9 +4260,8 @@ search_cur_bkref_entry (mctx, str_idx)
at STR_IDX. */
static reg_errcode_t
-match_ctx_add_subtop (mctx, node, str_idx)
- re_match_context_t *mctx;
- int node, str_idx;
+internal_function
+match_ctx_add_subtop (re_match_context_t *mctx, int node, int str_idx)
{
#ifdef DEBUG
assert (mctx->sub_tops != NULL);
@@ -4284,9 +4290,8 @@ match_ctx_add_subtop (mctx, node, str_idx)
at STR_IDX, whose corresponding OP_OPEN_SUBEXP is SUB_TOP. */
static re_sub_match_last_t *
-match_ctx_add_sublast (subtop, node, str_idx)
- re_sub_match_top_t *subtop;
- int node, str_idx;
+internal_function
+match_ctx_add_sublast (re_sub_match_top_t *subtop, int node, int str_idx)
{
re_sub_match_last_t *new_entry;
if (BE (subtop->nlasts == subtop->alasts, 0))
@@ -4312,10 +4317,9 @@ match_ctx_add_sublast (subtop, node, str_idx)
}
static void
-sift_ctx_init (sctx, sifted_sts, limited_sts, last_node, last_str_idx)
- re_sift_context_t *sctx;
- re_dfastate_t **sifted_sts, **limited_sts;
- int last_node, last_str_idx;
+internal_function
+sift_ctx_init (re_sift_context_t *sctx, re_dfastate_t **sifted_sts,
+ re_dfastate_t **limited_sts, int last_node, int last_str_idx)
{
sctx->sifted_states = sifted_sts;
sctx->limited_states = limited_sts;