aboutsummaryrefslogtreecommitdiff
path: root/posix/regexec.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>2005-09-07 16:15:23 +0000
committerUlrich Drepper <drepper@redhat.com>2005-09-07 16:15:23 +0000
commit76b864c8e021f5dd4c912d2352267a0049f7699f (patch)
treefe028e38c06d12bbc65eea5539f74a0f03e2acf2 /posix/regexec.c
parent6efbd82c5c819e32dbe9993f9a24008be6bcdf0a (diff)
downloadglibc-76b864c8e021f5dd4c912d2352267a0049f7699f.tar
glibc-76b864c8e021f5dd4c912d2352267a0049f7699f.tar.gz
glibc-76b864c8e021f5dd4c912d2352267a0049f7699f.tar.bz2
glibc-76b864c8e021f5dd4c912d2352267a0049f7699f.zip
(update_cur_sifted_state): Likewise.
(re_search_internal): Likewise. (prune_impossible_nodes): Likewise. (acquire_init_state_context): Likewise. (proceed_next_node): Likewise. (set_regs): Likewise. (free_fail_stack_return): Likewise. (check_subexp_limits): Likewise. (sub_epsilon_src_nodes): Likewise. (add_epsilon_src_nodes): Likewise. (merge_state_array): Likewise. (update_regs): Likewise. (build_trtable): Likewise. (sift_states_backward): Mark MCTX parameter as const. (build_sifted_states): Likewise. (update_cur_sifted_state): Likewise. (sift_states_mkref): Likewise. (check_dst_limits_calc_pos_1): Likewise. * posix/regex_internal.h (re_match_context_t): Make dfa a const pointer.
Diffstat (limited to 'posix/regexec.c')
-rw-r--r--posix/regexec.c164
1 files changed, 95 insertions, 69 deletions
diff --git a/posix/regexec.c b/posix/regexec.c
index 15a6ad4159..78042727f9 100644
--- a/posix/regexec.c
+++ b/posix/regexec.c
@@ -58,14 +58,13 @@ static inline re_dfastate_t *acquire_init_state_context
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;
+ int *p_match_first) internal_function;
static int check_halt_node_context (const re_dfa_t *dfa, int node,
unsigned int context) 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,
@@ -75,59 +74,73 @@ static int proceed_next_node (const re_match_context_t *mctx,
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;
+ 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;
+ regmatch_t *regs, 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)
+ internal_function;
+static reg_errcode_t add_epsilon_src_nodes (const 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,
+ const re_node_set *candidates)
+ internal_function;
+static reg_errcode_t sub_epsilon_src_nodes (const re_dfa_t *dfa, int node,
re_node_set *dest_nodes,
- const re_node_set *and_nodes) internal_function;
+ const re_node_set *and_nodes)
+ 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 (const re_match_context_t *mctx,
int boundaries, int subexp_idx,
- int from_node, int bkref_idx) internal_function;
+ 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;
+ 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 next_state_log_idx)
+ 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,
@@ -135,27 +148,33 @@ 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,
@@ -165,25 +184,30 @@ 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;
+ 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;
+ 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 int build_trtable (re_dfa_t *dfa,
+ 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 (const re_dfa_t *dfa, int node_idx,
- const re_string_t *input, int idx) internal_function;
+ 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 (const re_dfa_t *dfa,
@@ -191,8 +215,10 @@ static int group_nodes_into_DFAstates (const re_dfa_t *dfa,
re_node_set *states_node,
bitset *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. */
@@ -220,7 +246,7 @@ regexec (preg, string, nmatch, pmatch, eflags)
{
reg_errcode_t err;
int start, length;
- re_dfa_t *dfa = (re_dfa_t *)preg->buffer;
+ re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
if (eflags & ~(REG_NOTBOL | REG_NOTEOL | REG_STARTEND))
return REG_BADPAT;
@@ -411,7 +437,7 @@ 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;
+ re_dfa_t *dfa = (re_dfa_t *) bufp->buffer;
/* Check for out-of-range. */
if (BE (start < 0 || start > length, 0))
@@ -619,7 +645,7 @@ 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;
@@ -932,7 +958,7 @@ 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;
@@ -1020,7 +1046,7 @@ acquire_init_state_context (err, mctx, idx)
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;
@@ -1059,11 +1085,11 @@ acquire_init_state_context (err, mctx, idx)
static int
check_matching (mctx, fl_longest_match, p_match_first)
- re_match_context_t *mctx;
- int fl_longest_match;
- int *p_match_first;
+ 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;
@@ -1241,7 +1267,7 @@ proceed_next_node (mctx, nregs, regs, pidx, node, eps_via_nodes, fs)
re_node_set *eps_via_nodes;
struct re_fail_stack_t *fs;
{
- re_dfa_t *const dfa = mctx->dfa;
+ const re_dfa_t *const dfa = mctx->dfa;
int i, err;
if (IS_EPSILON_NODE (dfa->nodes[node].type))
{
@@ -1394,7 +1420,7 @@ set_regs (preg, mctx, nmatch, pmatch, fl_backtrack)
regmatch_t *pmatch;
int fl_backtrack;
{
- re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+ 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;
@@ -1515,7 +1541,7 @@ free_fail_stack_return (fs)
static void
update_regs (dfa, pmatch, prev_idx_match, cur_node, cur_idx, nmatch)
- re_dfa_t *dfa;
+ const re_dfa_t *dfa;
regmatch_t *pmatch, *prev_idx_match;
int cur_node, cur_idx, nmatch;
{
@@ -1588,7 +1614,7 @@ update_regs (dfa, pmatch, prev_idx_match, cur_node, cur_idx, nmatch)
static reg_errcode_t
sift_states_backward (mctx, sctx)
- re_match_context_t *mctx;
+ const re_match_context_t *mctx;
re_sift_context_t *sctx;
{
reg_errcode_t err;
@@ -1647,13 +1673,13 @@ sift_states_backward (mctx, sctx)
static reg_errcode_t
build_sifted_states (mctx, sctx, str_idx, cur_dest)
- re_match_context_t *mctx;
+ 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.
@@ -1737,7 +1763,7 @@ 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;
+ const re_dfa_t *dfa;
re_dfastate_t **dst;
re_dfastate_t **src;
int num;
@@ -1766,12 +1792,12 @@ 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;
+ 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;
+ const re_dfa_t *const dfa = mctx->dfa;
reg_errcode_t err;
const re_node_set *candidates;
candidates = ((mctx->state_log[str_idx] == NULL) ? NULL
@@ -1815,7 +1841,7 @@ 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;
+ const re_dfa_t *dfa;
re_node_set *dest_nodes;
const re_node_set *candidates;
{
@@ -1841,7 +1867,7 @@ 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;
+ const re_dfa_t *dfa;
int node;
re_node_set *dest_nodes;
const re_node_set *candidates;
@@ -1896,7 +1922,7 @@ check_dst_limits (mctx, limits, dst_node, dst_idx, src_node, src_idx)
re_node_set *limits;
int dst_node, dst_idx, src_node, 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);
@@ -1932,8 +1958,8 @@ check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx, from_node, bkref_idx)
const re_match_context_t *mctx;
int boundaries, subexp_idx, from_node, 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
@@ -2039,7 +2065,7 @@ check_dst_limits_calc_pos (mctx, limit, subexp_idx, from_node, str_idx, bkref_id
static reg_errcode_t
check_subexp_limits (dfa, dest_nodes, candidates, limits, bkref_ents, str_idx)
- re_dfa_t *dfa;
+ const re_dfa_t *dfa;
re_node_set *dest_nodes;
const re_node_set *candidates;
re_node_set *limits;
@@ -2130,12 +2156,12 @@ 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;
+ 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;
@@ -2438,7 +2464,7 @@ check_subexp_matching_top (mctx, cur_nodes, str_idx)
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;
@@ -3246,7 +3272,7 @@ expand_bkref_cache (mctx, cur_nodes, cur_str, subexp_num,
int cur_str, subexp_num, type;
re_node_set *cur_nodes;
{
- 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;
@@ -3332,8 +3358,8 @@ expand_bkref_cache (mctx, cur_nodes, cur_str, subexp_num,
static int
build_trtable (dfa, state)
- re_dfa_t *dfa;
- re_dfastate_t *state;
+ const re_dfa_t *dfa;
+ re_dfastate_t *state;
{
reg_errcode_t err;
int i, j, ch, need_word_trtable = 0;