diff options
Diffstat (limited to 'posix')
| -rw-r--r-- | posix/regex_internal.h | 4 | ||||
| -rw-r--r-- | posix/regexec.c | 164 |
2 files changed, 97 insertions, 71 deletions
diff --git a/posix/regex_internal.h b/posix/regex_internal.h index 4d6a7a8be2..debbe0db3b 100644 --- a/posix/regex_internal.h +++ b/posix/regex_internal.h @@ -576,9 +576,9 @@ typedef struct /* The string object corresponding to the input string. */ re_string_t input; #if defined _LIBC || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L) - re_dfa_t *const dfa; + const re_dfa_t *const dfa; #else - re_dfa_t *dfa; + const re_dfa_t *dfa; #endif /* EFLAGS of the argument of regexec. */ int eflags; 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; |