return 0;
}
+static int
+add_state_check_num(regex_t* reg, int num)
+{
+ StateCheckNumType n = (StateCheckNumType )num;
+
+ BBUF_ADD(reg, &n, SIZE_STATE_CHECK_NUM);
+ return 0;
+}
+
static int
add_rel_addr(regex_t* reg, int addr)
{
}
p[id].lower = lower;
- p[id].upper = upper;
+ p[id].upper = (IS_REPEAT_INFINITE(upper) ? 0x7fffffff : upper);
return 0;
}
return r;
}
+static int
+is_anychar_star_qualifier(QualifierNode* qn)
+{
+ if (qn->greedy && IS_REPEAT_INFINITE(qn->upper) &&
+ NTYPE(qn->target) == N_ANYCHAR)
+ return 1;
+ else
+ return 0;
+}
+
#define QUALIFIER_EXPAND_LIMIT_SIZE 50
+#define CKN_ON (ckn > 0)
+
+#ifdef USE_COMBINATION_EXPLOSION_CHECK
+
+static int
+compile_length_qualifier_node(QualifierNode* qn, regex_t* reg)
+{
+ int len, mod_tlen, cklen;
+ int ckn;
+ int infinite = IS_REPEAT_INFINITE(qn->upper);
+ int empty_info = qn->target_empty_info;
+ int tlen = compile_length_tree(qn->target, reg);
+
+ if (tlen < 0) return tlen;
+
+ ckn = ((reg->num_comb_exp_check > 0) ? qn->comb_exp_check_num : 0);
+
+ cklen = (CKN_ON ? SIZE_STATE_CHECK_NUM: 0);
+
+ /* anychar repeat */
+ if (NTYPE(qn->target) == N_ANYCHAR) {
+ if (qn->greedy && infinite) {
+ if (IS_NOT_NULL(qn->next_head_exact))
+ return SIZE_OP_ANYCHAR_STAR_PEEK_NEXT + tlen * qn->lower + cklen;
+ else
+ return SIZE_OP_ANYCHAR_STAR + tlen * qn->lower + cklen;
+ }
+ }
+
+ if (empty_info != 0)
+ mod_tlen = tlen + (SIZE_OP_NULL_CHECK_START + SIZE_OP_NULL_CHECK_END);
+ else
+ mod_tlen = tlen;
+
+ if (infinite && qn->lower <= 1) {
+ if (qn->greedy) {
+ if (qn->lower == 1)
+ len = SIZE_OP_JUMP;
+ else
+ len = 0;
+
+ len += SIZE_OP_PUSH + cklen + mod_tlen + SIZE_OP_JUMP;
+ }
+ else {
+ if (qn->lower == 0)
+ len = SIZE_OP_JUMP;
+ else
+ len = 0;
+
+ len += mod_tlen + SIZE_OP_PUSH + cklen;
+ }
+ }
+ else if (qn->upper == 0) {
+ if (qn->is_refered != 0) /* /(?<n>..){0}/ */
+ len = SIZE_OP_JUMP + tlen;
+ else
+ len = 0;
+ }
+ else if (qn->upper == 1 && qn->greedy) {
+ if (qn->lower == 0) {
+ if (CKN_ON) {
+ len = SIZE_OP_STATE_CHECK_PUSH + tlen;
+ }
+ else {
+ len = SIZE_OP_PUSH + tlen;
+ }
+ }
+ else {
+ len = tlen;
+ }
+ }
+ else if (!qn->greedy && qn->upper == 1 && qn->lower == 0) { /* '??' */
+ len = SIZE_OP_PUSH + cklen + SIZE_OP_JUMP + tlen;
+ }
+ else {
+ len = SIZE_OP_REPEAT_INC
+ + mod_tlen + SIZE_OPCODE + SIZE_RELADDR + SIZE_MEMNUM;
+ if (CKN_ON)
+ len += SIZE_OP_STATE_CHECK;
+ }
+
+ return len;
+}
+
+static int
+compile_qualifier_node(QualifierNode* qn, regex_t* reg)
+{
+ int r, mod_tlen;
+ int ckn;
+ int infinite = IS_REPEAT_INFINITE(qn->upper);
+ int empty_info = qn->target_empty_info;
+ int tlen = compile_length_tree(qn->target, reg);
+
+ if (tlen < 0) return tlen;
+
+ ckn = ((reg->num_comb_exp_check > 0) ? qn->comb_exp_check_num : 0);
+
+ if (is_anychar_star_qualifier(qn)) {
+ r = compile_tree_n_times(qn->target, qn->lower, reg);
+ if (r) return r;
+ if (IS_NOT_NULL(qn->next_head_exact)) {
+ if (IS_MULTILINE(reg->options))
+ r = add_opcode(reg, (CKN_ON ?
+ OP_STATE_CHECK_ANYCHAR_ML_STAR_PEEK_NEXT
+ : OP_ANYCHAR_ML_STAR_PEEK_NEXT));
+ else
+ r = add_opcode(reg, (CKN_ON ?
+ OP_STATE_CHECK_ANYCHAR_STAR_PEEK_NEXT
+ : OP_ANYCHAR_STAR_PEEK_NEXT));
+ if (r) return r;
+ if (CKN_ON) {
+ r = add_state_check_num(reg, ckn);
+ if (r) return r;
+ }
+
+ return add_bytes(reg, NSTRING(qn->next_head_exact).s, 1);
+ }
+ else {
+ if (IS_MULTILINE(reg->options)) {
+ r = add_opcode(reg, (CKN_ON ?
+ OP_STATE_CHECK_ANYCHAR_ML_STAR
+ : OP_ANYCHAR_ML_STAR));
+ }
+ else {
+ r = add_opcode(reg, (CKN_ON ?
+ OP_STATE_CHECK_ANYCHAR_STAR
+ : OP_ANYCHAR_STAR));
+ }
+ if (r) return r;
+ if (CKN_ON)
+ r = add_state_check_num(reg, ckn);
+
+ return r;
+ }
+ }
+
+ if (empty_info != 0)
+ mod_tlen = tlen + (SIZE_OP_NULL_CHECK_START + SIZE_OP_NULL_CHECK_END);
+ else
+ mod_tlen = tlen;
+
+ if (infinite && qn->lower <= 1) {
+ if (qn->greedy) {
+ if (qn->lower == 1) {
+ r = add_opcode_rel_addr(reg, OP_JUMP,
+ (CKN_ON ? SIZE_OP_STATE_CHECK_PUSH : SIZE_OP_PUSH));
+ if (r) return r;
+ }
+
+ if (CKN_ON) {
+ r = add_opcode(reg, OP_STATE_CHECK_PUSH);
+ if (r) return r;
+ r = add_state_check_num(reg, ckn);
+ if (r) return r;
+ r = add_rel_addr(reg, mod_tlen + SIZE_OP_JUMP);
+ }
+ else {
+ r = add_opcode_rel_addr(reg, OP_PUSH, mod_tlen + SIZE_OP_JUMP);
+ }
+ if (r) return r;
+ r = compile_tree_empty_check(qn->target, reg, empty_info);
+ if (r) return r;
+ r = add_opcode_rel_addr(reg, OP_JUMP,
+ -(mod_tlen + (int )SIZE_OP_JUMP
+ + (int )(CKN_ON ? SIZE_OP_STATE_CHECK_PUSH : SIZE_OP_PUSH)));
+ }
+ else {
+ if (qn->lower == 0) {
+ r = add_opcode_rel_addr(reg, OP_JUMP, mod_tlen);
+ if (r) return r;
+ }
+ r = compile_tree_empty_check(qn->target, reg, empty_info);
+ if (r) return r;
+ if (CKN_ON) {
+ r = add_opcode(reg, OP_STATE_CHECK_PUSH_OR_JUMP);
+ if (r) return r;
+ r = add_state_check_num(reg, ckn);
+ if (r) return r;
+ r = add_rel_addr(reg,
+ -(mod_tlen + (int )SIZE_OP_STATE_CHECK_PUSH_OR_JUMP));
+ }
+ else
+ r = add_opcode_rel_addr(reg, OP_PUSH, -(mod_tlen + (int )SIZE_OP_PUSH));
+ }
+ }
+ else if (qn->upper == 0) {
+ if (qn->is_refered != 0) { /* /(?<n>..){0}/ */
+ r = add_opcode_rel_addr(reg, OP_JUMP, tlen);
+ if (r) return r;
+ r = compile_tree(qn->target, reg);
+ }
+ else
+ r = 0;
+ }
+ else if (qn->upper == 1 && qn->greedy) {
+ if (qn->lower == 0) {
+ if (CKN_ON) {
+ r = add_opcode(reg, OP_STATE_CHECK_PUSH);
+ if (r) return r;
+ r = add_state_check_num(reg, ckn);
+ if (r) return r;
+ r = add_rel_addr(reg, tlen);
+ }
+ else {
+ r = add_opcode_rel_addr(reg, OP_PUSH, tlen);
+ }
+ if (r) return r;
+ }
+
+ r = compile_tree(qn->target, reg);
+ }
+ else if (!qn->greedy && qn->upper == 1 && qn->lower == 0) { /* '??' */
+ if (CKN_ON) {
+ r = add_opcode(reg, OP_STATE_CHECK_PUSH);
+ if (r) return r;
+ r = add_state_check_num(reg, ckn);
+ if (r) return r;
+ r = add_rel_addr(reg, SIZE_OP_JUMP);
+ }
+ else {
+ r = add_opcode_rel_addr(reg, OP_PUSH, SIZE_OP_JUMP);
+ }
+
+ if (r) return r;
+ r = add_opcode_rel_addr(reg, OP_JUMP, tlen);
+ if (r) return r;
+ r = compile_tree(qn->target, reg);
+ }
+ else {
+ r = compile_range_repeat_node(qn, mod_tlen, empty_info, reg);
+ if (CKN_ON) {
+ if (r) return r;
+ r = add_opcode(reg, OP_STATE_CHECK);
+ if (r) return r;
+ r = add_state_check_num(reg, ckn);
+ }
+ }
+ return r;
+}
+
+#else /* USE_COMBINATION_EXPLOSION_CHECK */
static int
compile_length_qualifier_node(QualifierNode* qn, regex_t* reg)
return len;
}
-static int
-is_anychar_star_qualifier(QualifierNode* qn)
-{
- if (qn->greedy && IS_REPEAT_INFINITE(qn->upper) &&
- NTYPE(qn->target) == N_ANYCHAR)
- return 1;
- else
- return 0;
-}
-
static int
compile_qualifier_node(QualifierNode* qn, regex_t* reg)
{
}
return r;
}
+#endif /* USE_COMBINATION_EXPLOSION_CHECK */
static int
compile_length_option_node(EffectNode* node, regex_t* reg)
}
if (r) return r;
+#ifdef USE_BACKREF_AT_LEVEL
add_bacref_mems:
+#endif
r = add_length(reg, br->back_num);
if (r) return r;
p = BACKREFS_P(br);
return 0;
}
+#ifdef USE_COMBINATION_EXPLOSION_CHECK
+
+#define CEC_THRES_NUM_BIG_REPEAT 512
+#define CEC_INFINITE_NUM 0x7fffffff
+
+#define CEC_IN_INFINITE_REPEAT (1<<0)
+#define CEC_IN_FINITE_REPEAT (1<<1)
+#define CEC_CONT_BIG_REPEAT (1<<2)
+
+static int
+setup_comb_exp_check(Node* node, int state, ScanEnv* env)
+{
+ int type;
+ int r = state;
+
+ type = NTYPE(node);
+ switch (type) {
+ case N_LIST:
+ {
+ Node* prev = NULL_NODE;
+ do {
+ r = setup_comb_exp_check(NCONS(node).left, r, env);
+ prev = NCONS(node).left;
+ } while (r >= 0 && IS_NOT_NULL(node = NCONS(node).right));
+ }
+ break;
+
+ case N_ALT:
+ {
+ int ret;
+ do {
+ ret = setup_comb_exp_check(NCONS(node).left, state, env);
+ r |= ret;
+ } while (ret >= 0 && IS_NOT_NULL(node = NCONS(node).right));
+ }
+ break;
+
+ case N_QUALIFIER:
+ {
+ int child_state = state;
+ int add_state = 0;
+ QualifierNode* qn = &(NQUALIFIER(node));
+ Node* target = qn->target;
+ int var_num;
+
+ if (! IS_REPEAT_INFINITE(qn->upper)) {
+ if (qn->upper > 1) {
+ /* {0,1}, {1,1} are allowed */
+ child_state |= CEC_IN_FINITE_REPEAT;
+
+ /* check (a*){n,m}, (a+){n,m} => (a*){n,n}, (a+){n,n} */
+ if (env->backrefed_mem == 0) {
+ if (NTYPE(qn->target) == N_EFFECT) {
+ EffectNode* en = &(NEFFECT(qn->target));
+ if (en->type == EFFECT_MEMORY) {
+ if (NTYPE(en->target) == N_QUALIFIER) {
+ QualifierNode* q = &(NQUALIFIER(en->target));
+ if (IS_REPEAT_INFINITE(q->upper)
+ && q->greedy == qn->greedy) {
+ qn->upper = (qn->lower == 0 ? 1 : qn->lower);
+ if (qn->upper == 1)
+ child_state = state;
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+
+ if (state & CEC_IN_FINITE_REPEAT) {
+ qn->comb_exp_check_num = -1;
+ }
+ else {
+ if (IS_REPEAT_INFINITE(qn->upper)) {
+ var_num = CEC_INFINITE_NUM;
+ child_state |= CEC_IN_INFINITE_REPEAT;
+ }
+ else {
+ var_num = qn->upper - qn->lower;
+ }
+
+ if (var_num >= CEC_THRES_NUM_BIG_REPEAT)
+ add_state |= CEC_CONT_BIG_REPEAT;
+
+ if (((state & CEC_IN_INFINITE_REPEAT) != 0 && var_num != 0) ||
+ ((state & CEC_CONT_BIG_REPEAT) != 0 &&
+ var_num >= CEC_THRES_NUM_BIG_REPEAT)) {
+ if (qn->comb_exp_check_num == 0) {
+ env->num_comb_exp_check++;
+ qn->comb_exp_check_num = env->num_comb_exp_check;
+ if (env->curr_max_regnum > env->comb_exp_max_regnum)
+ env->comb_exp_max_regnum = env->curr_max_regnum;
+ }
+ }
+ }
+
+ r = setup_comb_exp_check(target, child_state, env);
+ r |= add_state;
+ }
+ break;
+
+ case N_EFFECT:
+ {
+ EffectNode* en = &(NEFFECT(node));
+
+ switch (en->type) {
+ case EFFECT_MEMORY:
+ {
+ if (env->curr_max_regnum < en->regnum)
+ env->curr_max_regnum = en->regnum;
+
+ r = setup_comb_exp_check(en->target, state, env);
+ }
+ break;
+
+ default:
+ r = setup_comb_exp_check(en->target, state, env);
+ break;
+ }
+ }
+ break;
+
+#ifdef USE_SUBEXP_CALL
+ case N_CALL:
+ if (IS_CALL_RECURSION(&(NCALL(node))))
+ env->has_recursion = 1;
+ else
+ r = setup_comb_exp_check(NCALL(node).target, state, env);
+ break;
+#endif
+
+ default:
+ break;
+ }
+
+ return r;
+}
+#endif
+
#define IN_ALT (1<<0)
#define IN_NOT (1<<1)
#define IN_REPEAT (1<<2)
}
static void
-concat_opt_exact_info(OptExactInfo* to, OptExactInfo* add)
+concat_opt_exact_info(OptExactInfo* to, OptExactInfo* add, OnigEncoding enc)
{
- int i, n;
+ int i, j, len;
+ UChar *p, *end;
OptAncInfo tanc;
if (! to->ignore_case && add->ignore_case) {
to->ignore_case = 1;
}
- for (i = to->len, n = 0; n < add->len && i < OPT_EXACT_MAXLEN; i++, n++)
- to->s[i] = add->s[n];
+ p = add->s;
+ end = p + add->len;
+ for (i = to->len; p < end; ) {
+ len = enc_len(enc, p);
+ if (i + len > OPT_EXACT_MAXLEN) break;
+ for (j = 0; j < len && p < end; j++)
+ to->s[i++] = *p++;
+ }
to->len = i;
- to->reach_end = (n == add->len ? add->reach_end : 0);
+ to->reach_end = (p == end ? add->reach_end : 0);
concat_opt_anc_info(&tanc, &to->anc, &add->anc, 1, 1);
if (! to->reach_end) tanc.right_anchor = 0;
UChar *p;
for (i = to->len, p = s; p < end && i < OPT_EXACT_MAXLEN; ) {
- if (raw) {
+ len = enc_len(enc, p);
+ if (i + len > OPT_EXACT_MAXLEN) break;
+ for (j = 0; j < len && p < end; j++)
to->s[i++] = *p++;
- }
- else {
- len = enc_len(enc, p);
- if (i + len > OPT_EXACT_MAXLEN) break;
- for (j = 0; j < len; j++)
- to->s[i++] = *p++;
- }
}
to->len = i;
if (add->exb.len > 0) {
if (exb_reach) {
- concat_opt_exact_info(&to->exb, &add->exb);
+ concat_opt_exact_info(&to->exb, &add->exb, enc);
clear_opt_exact_info(&add->exb);
}
else if (exm_reach) {
- concat_opt_exact_info(&to->exm, &add->exb);
+ concat_opt_exact_info(&to->exm, &add->exb, enc);
clear_opt_exact_info(&add->exb);
}
}
if (nopt.exb.reach_end) {
for (i = 2; i < qn->lower &&
! is_full_opt_exact_info(&opt->exb); i++) {
- concat_opt_exact_info(&opt->exb, &nopt.exb);
+ concat_opt_exact_info(&opt->exb, &nopt.exb, env->enc);
}
if (i < qn->lower) {
opt->exb.reach_end = 0;
reg->num_null_check = 0;
reg->repeat_range_alloc = 0;
reg->repeat_range = (OnigRepeatRange* )NULL;
+#ifdef USE_COMBINATION_EXPLOSION_CHECK
+ reg->num_comb_exp_check = 0;
+#endif
r = onig_parse_make_tree(&root, pattern, pattern_end, reg, &scan_env);
if (r != 0) goto err;
reg->bt_mem_end |= reg->capture_history;
}
+#ifdef USE_COMBINATION_EXPLOSION_CHECK
+ if (scan_env.backrefed_mem == 0
+#ifdef USE_SUBEXP_CALL
+ || scan_env.num_call == 0
+#endif
+ ) {
+ setup_comb_exp_check(root, 0, &scan_env);
+#ifdef USE_SUBEXP_CALL
+ if (scan_env.has_recursion != 0) {
+ scan_env.num_comb_exp_check = 0;
+ }
+ else
+#endif
+ if (scan_env.comb_exp_max_regnum > 0) {
+ int i;
+ for (i = 1; i <= scan_env.comb_exp_max_regnum; i++) {
+ if (BIT_STATUS_AT(scan_env.backrefed_mem, i) != 0) {
+ scan_env.num_comb_exp_check = 0;
+ break;
+ }
+ }
+ }
+ }
+
+ reg->num_comb_exp_check = scan_env.num_comb_exp_check;
+#endif
+
clear_optimize_info(reg);
#ifndef ONIG_DONT_OPTIMIZE
r = set_optimize_info_from_tree(root, reg, &scan_env);
#ifdef ONIG_DEBUG
+/* arguments type */
+#define ARG_SPECIAL -1
+#define ARG_NON 0
+#define ARG_RELADDR 1
+#define ARG_ABSADDR 2
+#define ARG_LENGTH 3
+#define ARG_MEMNUM 4
+#define ARG_OPTION 5
+#define ARG_STATE_CHECK 6
+
OnigOpInfoType OnigOpInfo[] = {
{ OP_FINISH, "finish", ARG_NON },
{ OP_END, "end", ARG_NON },
{ OP_ANYCHAR_ML_STAR, "anychar-ml*", ARG_NON },
{ OP_ANYCHAR_STAR_PEEK_NEXT, "anychar*-peek-next", ARG_SPECIAL },
{ OP_ANYCHAR_ML_STAR_PEEK_NEXT, "anychar-ml*-peek-next", ARG_SPECIAL },
- { OP_WORD, "word", ARG_NON },
- { OP_NOT_WORD, "not-word", ARG_NON },
- { OP_WORD_SB, "word-sb", ARG_NON },
- { OP_WORD_MB, "word-mb", ARG_NON },
- { OP_WORD_BOUND, "word-bound", ARG_NON },
- { OP_NOT_WORD_BOUND, "not-word-bound", ARG_NON },
- { OP_WORD_BEGIN, "word-begin", ARG_NON },
- { OP_WORD_END, "word-end", ARG_NON },
- { OP_BEGIN_BUF, "begin-buf", ARG_NON },
- { OP_END_BUF, "end-buf", ARG_NON },
- { OP_BEGIN_LINE, "begin-line", ARG_NON },
- { OP_END_LINE, "end-line", ARG_NON },
- { OP_SEMI_END_BUF, "semi-end-buf", ARG_NON },
- { OP_BEGIN_POSITION, "begin-position", ARG_NON },
- { OP_BACKREF1, "backref1", ARG_NON },
- { OP_BACKREF2, "backref2", ARG_NON },
- { OP_BACKREF3, "backref3", ARG_NON },
- { OP_BACKREFN, "backrefn", ARG_MEMNUM },
- { OP_BACKREFN_IC, "backrefn-ic", ARG_SPECIAL },
- { OP_BACKREF_MULTI, "backref_multi", ARG_SPECIAL },
- { OP_BACKREF_MULTI_IC, "backref_multi-ic", ARG_SPECIAL },
- { OP_BACKREF_AT_LEVEL, "backref_at_level", ARG_SPECIAL },
- { OP_MEMORY_START_PUSH, "mem-start-push", ARG_MEMNUM },
- { OP_MEMORY_START, "mem-start", ARG_MEMNUM },
- { OP_MEMORY_END_PUSH, "mem-end-push", ARG_MEMNUM },
- { OP_MEMORY_END_PUSH_REC, "mem-end-push-rec", ARG_MEMNUM },
- { OP_MEMORY_END, "mem-end", ARG_MEMNUM },
- { OP_MEMORY_END_REC, "mem-end-rec", ARG_MEMNUM },
- { OP_SET_OPTION_PUSH, "set-option-push", ARG_OPTION },
- { OP_SET_OPTION, "set-option", ARG_OPTION },
- { OP_FAIL, "fail", ARG_NON },
- { OP_JUMP, "jump", ARG_RELADDR },
- { OP_PUSH, "push", ARG_RELADDR },
- { OP_POP, "pop", ARG_NON },
- { OP_PUSH_OR_JUMP_EXACT1, "push-or-jump-e1", ARG_SPECIAL },
- { OP_PUSH_IF_PEEK_NEXT, "push-if-peek-next", ARG_SPECIAL },
- { OP_REPEAT, "repeat", ARG_SPECIAL },
- { OP_REPEAT_NG, "repeat-ng", ARG_SPECIAL },
- { OP_REPEAT_INC, "repeat-inc", ARG_MEMNUM },
- { OP_REPEAT_INC_NG, "repeat-inc-ng", ARG_MEMNUM },
- { OP_REPEAT_INC_SG, "repeat-inc-sg", ARG_MEMNUM },
- { OP_REPEAT_INC_NG_SG, "repeat-inc-ng-sg", ARG_MEMNUM },
- { OP_NULL_CHECK_START, "null-check-start", ARG_MEMNUM },
- { OP_NULL_CHECK_END, "null-check-end", ARG_MEMNUM },
- { OP_NULL_CHECK_END_MEMST,"null-check-end-memst", ARG_MEMNUM },
- { OP_NULL_CHECK_END_MEMST_PUSH,"null-check-end-memst-push", ARG_MEMNUM },
- { OP_PUSH_POS, "push-pos", ARG_NON },
- { OP_POP_POS, "pop-pos", ARG_NON },
- { OP_PUSH_POS_NOT, "push-pos-not", ARG_RELADDR },
- { OP_FAIL_POS, "fail-pos", ARG_NON },
- { OP_PUSH_STOP_BT, "push-stop-bt", ARG_NON },
- { OP_POP_STOP_BT, "pop-stop-bt", ARG_NON },
- { OP_LOOK_BEHIND, "look-behind", ARG_SPECIAL },
+ { OP_WORD, "word", ARG_NON },
+ { OP_NOT_WORD, "not-word", ARG_NON },
+ { OP_WORD_SB, "word-sb", ARG_NON },
+ { OP_WORD_MB, "word-mb", ARG_NON },
+ { OP_WORD_BOUND, "word-bound", ARG_NON },
+ { OP_NOT_WORD_BOUND, "not-word-bound", ARG_NON },
+ { OP_WORD_BEGIN, "word-begin", ARG_NON },
+ { OP_WORD_END, "word-end", ARG_NON },
+ { OP_BEGIN_BUF, "begin-buf", ARG_NON },
+ { OP_END_BUF, "end-buf", ARG_NON },
+ { OP_BEGIN_LINE, "begin-line", ARG_NON },
+ { OP_END_LINE, "end-line", ARG_NON },
+ { OP_SEMI_END_BUF, "semi-end-buf", ARG_NON },
+ { OP_BEGIN_POSITION, "begin-position", ARG_NON },
+ { OP_BACKREF1, "backref1", ARG_NON },
+ { OP_BACKREF2, "backref2", ARG_NON },
+ { OP_BACKREF3, "backref3", ARG_NON },
+ { OP_BACKREFN, "backrefn", ARG_MEMNUM },
+ { OP_BACKREFN_IC, "backrefn-ic", ARG_SPECIAL },
+ { OP_BACKREF_MULTI, "backref_multi", ARG_SPECIAL },
+ { OP_BACKREF_MULTI_IC, "backref_multi-ic", ARG_SPECIAL },
+ { OP_BACKREF_AT_LEVEL, "backref_at_level", ARG_SPECIAL },
+ { OP_MEMORY_START_PUSH, "mem-start-push", ARG_MEMNUM },
+ { OP_MEMORY_START, "mem-start", ARG_MEMNUM },
+ { OP_MEMORY_END_PUSH, "mem-end-push", ARG_MEMNUM },
+ { OP_MEMORY_END_PUSH_REC, "mem-end-push-rec", ARG_MEMNUM },
+ { OP_MEMORY_END, "mem-end", ARG_MEMNUM },
+ { OP_MEMORY_END_REC, "mem-end-rec", ARG_MEMNUM },
+ { OP_SET_OPTION_PUSH, "set-option-push", ARG_OPTION },
+ { OP_SET_OPTION, "set-option", ARG_OPTION },
+ { OP_FAIL, "fail", ARG_NON },
+ { OP_JUMP, "jump", ARG_RELADDR },
+ { OP_PUSH, "push", ARG_RELADDR },
+ { OP_POP, "pop", ARG_NON },
+ { OP_PUSH_OR_JUMP_EXACT1, "push-or-jump-e1", ARG_SPECIAL },
+ { OP_PUSH_IF_PEEK_NEXT, "push-if-peek-next", ARG_SPECIAL },
+ { OP_REPEAT, "repeat", ARG_SPECIAL },
+ { OP_REPEAT_NG, "repeat-ng", ARG_SPECIAL },
+ { OP_REPEAT_INC, "repeat-inc", ARG_MEMNUM },
+ { OP_REPEAT_INC_NG, "repeat-inc-ng", ARG_MEMNUM },
+ { OP_REPEAT_INC_SG, "repeat-inc-sg", ARG_MEMNUM },
+ { OP_REPEAT_INC_NG_SG, "repeat-inc-ng-sg", ARG_MEMNUM },
+ { OP_NULL_CHECK_START, "null-check-start", ARG_MEMNUM },
+ { OP_NULL_CHECK_END, "null-check-end", ARG_MEMNUM },
+ { OP_NULL_CHECK_END_MEMST,"null-check-end-memst", ARG_MEMNUM },
+ { OP_NULL_CHECK_END_MEMST_PUSH,"null-check-end-memst-push", ARG_MEMNUM },
+ { OP_PUSH_POS, "push-pos", ARG_NON },
+ { OP_POP_POS, "pop-pos", ARG_NON },
+ { OP_PUSH_POS_NOT, "push-pos-not", ARG_RELADDR },
+ { OP_FAIL_POS, "fail-pos", ARG_NON },
+ { OP_PUSH_STOP_BT, "push-stop-bt", ARG_NON },
+ { OP_POP_STOP_BT, "pop-stop-bt", ARG_NON },
+ { OP_LOOK_BEHIND, "look-behind", ARG_SPECIAL },
{ OP_PUSH_LOOK_BEHIND_NOT, "push-look-behind-not", ARG_SPECIAL },
{ OP_FAIL_LOOK_BEHIND_NOT, "fail-look-behind-not", ARG_NON },
- { OP_CALL, "call", ARG_ABSADDR },
- { OP_RETURN, "return", ARG_NON },
+ { OP_CALL, "call", ARG_ABSADDR },
+ { OP_RETURN, "return", ARG_NON },
+ { OP_STATE_CHECK_PUSH, "state-check-push", ARG_SPECIAL },
+ { OP_STATE_CHECK_PUSH_OR_JUMP, "state-check-push-or-jump", ARG_SPECIAL },
+ { OP_STATE_CHECK, "state-check", ARG_STATE_CHECK },
+ { OP_STATE_CHECK_ANYCHAR_STAR, "state-check-anychar*", ARG_STATE_CHECK },
+ { OP_STATE_CHECK_ANYCHAR_ML_STAR,
+ "state-check-anychar-ml*", ARG_STATE_CHECK },
+ { OP_STATE_CHECK_ANYCHAR_STAR_PEEK_NEXT,
+ "state-check-anychar*-peek-next", ARG_SPECIAL },
+ { OP_STATE_CHECK_ANYCHAR_ML_STAR_PEEK_NEXT,
+ "state-check-anychar-ml*-peek-next", ARG_SPECIAL },
{ -1, "", ARG_NON }
};
RelAddrType addr;
LengthType len;
MemNumType mem;
+ StateCheckNumType scn;
OnigCodePoint code;
UChar *q;
fprintf(f, ":%d", option);
}
break;
+
+ case ARG_STATE_CHECK:
+ scn = *((StateCheckNumType* )bp);
+ bp += SIZE_STATE_CHECK_NUM;
+ fprintf(f, ":%d", scn);
+ break;
}
}
else {
fprintf(f, ":%d:(%d)", len, addr);
break;
+ case OP_STATE_CHECK_PUSH:
+ case OP_STATE_CHECK_PUSH_OR_JUMP:
+ scn = *((StateCheckNumType* )bp);
+ bp += SIZE_STATE_CHECK_NUM;
+ addr = *((RelAddrType* )bp);
+ bp += SIZE_RELADDR;
+ fprintf(f, ":%d:(%d)", scn, addr);
+ break;
+
+ case OP_STATE_CHECK_ANYCHAR_STAR_PEEK_NEXT:
+ case OP_STATE_CHECK_ANYCHAR_ML_STAR_PEEK_NEXT:
+ scn = *((StateCheckNumType* )bp);
+ bp += SIZE_STATE_CHECK_NUM;
+ fprintf(f, ":%d", scn);
+ p_string(f, 1, bp);
+ bp += 1;
+ break;
+
default:
fprintf(stderr, "onig_print_compiled_byte_code: undefined code %d\n",
*--bp);
UChar *pcode; /* byte code position */
UChar *pstr; /* string position */
UChar *pstr_prev; /* previous char position of pstr */
+#ifdef USE_COMBINATION_EXPLOSION_CHECK
+ unsigned int state_check;
+#endif
} state;
struct {
int count; /* for OP_REPEAT_INC, OP_REPEAT_INC_NG */
/* stack type */
/* used by normal-POP */
#define STK_ALT 0x0001
-#define STK_LOOK_BEHIND_NOT 0x0003
-#define STK_POS_NOT 0x0005
-/* avoided by normal-POP, but value should be small */
-#define STK_NULL_CHECK_START 0x0100
+#define STK_LOOK_BEHIND_NOT 0x0002
+#define STK_POS_NOT 0x0003
/* handled by normal-POP */
-#define STK_MEM_START 0x0200
-#define STK_MEM_END 0x0300
-#define STK_REPEAT_INC 0x0400
+#define STK_MEM_START 0x0100
+#define STK_MEM_END 0x8200
+#define STK_REPEAT_INC 0x0300
+#define STK_STATE_CHECK_MARK 0x1000
/* avoided by normal-POP */
+#define STK_NULL_CHECK_START 0x3000
+#define STK_NULL_CHECK_END 0x5000 /* for recursive call */
+#define STK_MEM_END_MARK 0x8400
#define STK_POS 0x0500 /* used when POP-POS */
#define STK_STOP_BT 0x0600 /* mark for "(?>...)" */
#define STK_REPEAT 0x0700
#define STK_CALL_FRAME 0x0800
#define STK_RETURN 0x0900
-#define STK_MEM_END_MARK 0x0a00
-#define STK_VOID 0x0b00 /* for fill a blank */
-#define STK_NULL_CHECK_END 0x0c00 /* for recursive call */
+#define STK_VOID 0x0a00 /* for fill a blank */
/* stack type check mask */
-#define STK_MASK_POP_USED 0x00ff
-#define IS_TO_VOID_TARGET(stk) \
- (((stk)->type & STK_MASK_POP_USED) || \
- (stk)->type == STK_NULL_CHECK_START || (stk)->type == STK_NULL_CHECK_END)
+#define STK_MASK_POP_USED 0x00ff
+#define STK_MASK_TO_VOID_TARGET 0x10ff
+#define STK_MASK_MEM_END_OR_MARK 0x8000 /* MEM_END or MEM_END_MARK */
typedef struct {
void* stack_p;
OnigOptionType options;
OnigRegion* region;
const UChar* start; /* search start position (for \G: BEGIN_POSITION) */
+#ifdef USE_COMBINATION_EXPLOSION_CHECK
+ void* state_check_buff;
+ int state_check_buff_size;
+#endif
} MatchArg;
#define MATCH_ARG_INIT(msa, arg_option, arg_region, arg_start) do {\
(msa).start = (arg_start);\
} while (0)
-#define MATCH_ARG_FREE(msa) if ((msa).stack_p) xfree((msa).stack_p)
+#ifdef USE_COMBINATION_EXPLOSION_CHECK
+
+#define STATE_CHECK_BUFF_MALLOC_THRESHOLD_SIZE 16
+
+#define STATE_CHECK_BUFF_INIT(msa, str_len, state_num) do { \
+ (msa).state_check_buff = (void* )0;\
+ if ((state_num) > 0 && str_len >= STATE_CHECK_STRING_THRESHOLD_LEN) {\
+ int size = ((int )((str_len) + 1) * (state_num) + 7) / 8;\
+ (msa).state_check_buff_size = size; \
+ if (size > 0 && size < STATE_CHECK_BUFF_MAX_SIZE) {\
+ if (size >= STATE_CHECK_BUFF_MALLOC_THRESHOLD_SIZE) \
+ (msa).state_check_buff = (void* )xmalloc(size);\
+ else \
+ (msa).state_check_buff = (void* )xalloca(size);\
+ xmemset((msa).state_check_buff, 0, (size_t )size);\
+ }\
+ }\
+} while (0)
+
+#define MATCH_ARG_FREE(msa) do {\
+ if ((msa).stack_p) xfree((msa).stack_p);\
+ if ((msa).state_check_buff_size >= STATE_CHECK_BUFF_MALLOC_THRESHOLD_SIZE) { \
+ if ((msa).state_check_buff) xfree((msa).state_check_buff);\
+ }\
+} while (0);
+#else
+#define STATE_CHECK_BUFF_INIT(msa, str_len, state_num)
+#define MATCH_ARG_FREE(msa) if ((msa).stack_p) xfree((msa).stack_p)
+#endif
+
#define STACK_INIT(alloc_addr, ptr_num, stack_num) do {\
#define STACK_AT(index) (stk_base + (index))
#define GET_STACK_INDEX(stk) ((stk) - stk_base)
+#define STACK_PUSH_TYPE(stack_type) do {\
+ STACK_ENSURE(1);\
+ stk->type = (stack_type);\
+ STACK_INC;\
+} while(0)
+
+#define IS_TO_VOID_TARGET(stk) (((stk)->type & STK_MASK_TO_VOID_TARGET) != 0)
+
+#ifdef USE_COMBINATION_EXPLOSION_CHECK
+#define STATE_CHECK_POS(s,snum) \
+ (((s) - str) * num_comb_exp_check + ((snum) - 1))
+#define STATE_CHECK_VAL(v,snum) do {\
+ if (state_check_buff != NULL) {\
+ int x = STATE_CHECK_POS(s,snum);\
+ (v) = state_check_buff[x/8] & (1<<(x%8));\
+ }\
+ else (v) = 0;\
+} while(0)
+
+
+#define ELSE_IF_STATE_CHECK_MARK(stk) \
+ else if ((stk)->type == STK_STATE_CHECK_MARK) { \
+ int x = STATE_CHECK_POS(stk->u.state.pstr, stk->u.state.state_check);\
+ state_check_buff[x/8] |= (1<<(x%8)); \
+ }
+
#define STACK_PUSH(stack_type,pat,s,sprev) do {\
STACK_ENSURE(1);\
stk->type = (stack_type);\
stk->u.state.pcode = (pat);\
stk->u.state.pstr = (s);\
stk->u.state.pstr_prev = (sprev);\
+ stk->u.state.state_check = 0;\
STACK_INC;\
} while(0)
#define STACK_PUSH_ENSURED(stack_type,pat) do {\
stk->type = (stack_type);\
stk->u.state.pcode = (pat);\
+ stk->u.state.state_check = 0;\
STACK_INC;\
} while(0)
-#define STACK_PUSH_TYPE(stack_type) do {\
+#define STACK_PUSH_ALT_WITH_STATE_CHECK(pat,s,sprev,snum) do {\
STACK_ENSURE(1);\
+ stk->type = STK_ALT;\
+ stk->u.state.pcode = (pat);\
+ stk->u.state.pstr = (s);\
+ stk->u.state.pstr_prev = (sprev);\
+ stk->u.state.state_check = ((state_check_buff != NULL) ? (snum) : 0);\
+ STACK_INC;\
+} while(0)
+
+#define STACK_PUSH_STATE_CHECK(s,snum) do {\
+ if (state_check_buff != NULL) {\
+ STACK_ENSURE(1);\
+ stk->type = STK_STATE_CHECK_MARK;\
+ stk->u.state.pstr = (s);\
+ stk->u.state.state_check = (snum);\
+ STACK_INC;\
+ }\
+} while(0)
+
+#else /* USE_COMBINATION_EXPLOSION_CHECK */
+
+#define ELSE_IF_STATE_CHECK_MARK(stk)
+
+#define STACK_PUSH(stack_type,pat,s,sprev) do {\
+ STACK_ENSURE(1);\
+ stk->type = (stack_type);\
+ stk->u.state.pcode = (pat);\
+ stk->u.state.pstr = (s);\
+ stk->u.state.pstr_prev = (sprev);\
+ STACK_INC;\
+} while(0)
+
+#define STACK_PUSH_ENSURED(stack_type,pat) do {\
stk->type = (stack_type);\
+ stk->u.state.pcode = (pat);\
STACK_INC;\
} while(0)
+#endif /* USE_COMBINATION_EXPLOSION_CHECK */
#define STACK_PUSH_ALT(pat,s,sprev) STACK_PUSH(STK_ALT,pat,s,sprev)
#define STACK_PUSH_POS(s,sprev) STACK_PUSH(STK_POS,NULL_UCHARP,s,sprev)
k = stk;\
while (k > stk_base) {\
k--;\
- if ((k->type == STK_MEM_END_MARK || k->type == STK_MEM_END) \
+ if ((k->type & STK_MASK_MEM_END_OR_MARK) != 0 \
&& k->u.mem.num == (mnum)) {\
level++;\
}\
stk--;\
STACK_BASE_CHECK(stk, "STACK_POP"); \
if ((stk->type & STK_MASK_POP_USED) != 0) break;\
+ ELSE_IF_STATE_CHECK_MARK(stk);\
}\
break;\
case STACK_POP_LEVEL_MEM_START:\
mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
}\
+ ELSE_IF_STATE_CHECK_MARK(stk);\
}\
break;\
default:\
mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
}\
+ ELSE_IF_STATE_CHECK_MARK(stk);\
}\
break;\
}\
mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
}\
+ ELSE_IF_STATE_CHECK_MARK(stk);\
}\
} while(0)
mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
}\
+ ELSE_IF_STATE_CHECK_MARK(stk);\
}\
} while(0)
is_fail = 0; \
} while(0)
+
#define ON_STR_BEGIN(s) ((s) == str)
#define ON_STR_END(s) ((s) == end)
#define IS_EMPTY_STR (str == end)
StackIndex si;
StackIndex *repeat_stk;
StackIndex *mem_start_stk, *mem_end_stk;
+#ifdef USE_COMBINATION_EXPLOSION_CHECK
+ int scv;
+ unsigned char* state_check_buff = msa->state_check_buff;
+ int num_comb_exp_check = reg->num_comb_exp_check;
+#endif
n = reg->num_repeat + reg->num_mem * 2;
STACK_INIT(alloca_base, n, INIT_MATCH_STACK_SIZE);
STAT_OP_OUT;
break;
+#ifdef USE_COMBINATION_EXPLOSION_CHECK
+ case OP_STATE_CHECK_ANYCHAR_STAR: STAT_OP_IN(OP_STATE_CHECK_ANYCHAR_STAR);
+ GET_STATE_CHECK_NUM_INC(mem, p);
+ while (s < end) {
+ STATE_CHECK_VAL(scv, mem);
+ if (scv) goto fail;
+
+ STACK_PUSH_ALT_WITH_STATE_CHECK(p, s, sprev, mem);
+ n = enc_len(encode, s);
+ DATA_ENSURE(n);
+ if (ONIGENC_IS_MBC_NEWLINE(encode, s, end)) goto fail;
+ sprev = s;
+ s += n;
+ }
+ STAT_OP_OUT;
+ break;
+
+ case OP_STATE_CHECK_ANYCHAR_ML_STAR:
+ STAT_OP_IN(OP_STATE_CHECK_ANYCHAR_ML_STAR);
+
+ GET_STATE_CHECK_NUM_INC(mem, p);
+ while (s < end) {
+ STATE_CHECK_VAL(scv, mem);
+ if (scv) goto fail;
+
+ STACK_PUSH_ALT_WITH_STATE_CHECK(p, s, sprev, mem);
+ n = enc_len(encode, s);
+ if (n > 1) {
+ DATA_ENSURE(n);
+ sprev = s;
+ s += n;
+ }
+ else {
+ sprev = s;
+ s++;
+ }
+ }
+ STAT_OP_OUT;
+ break;
+
+ case OP_STATE_CHECK_ANYCHAR_STAR_PEEK_NEXT:
+ STAT_OP_IN(OP_STATE_CHECK_ANYCHAR_STAR_PEEK_NEXT);
+
+ GET_STATE_CHECK_NUM_INC(mem, p);
+ while (s < end) {
+ STATE_CHECK_VAL(scv, mem);
+ if (scv) goto fail;
+
+ if (*p == *s) {
+ STACK_PUSH_ALT_WITH_STATE_CHECK(p + 1, s, sprev, mem);
+ }
+ n = enc_len(encode, s);
+ DATA_ENSURE(n);
+ if (ONIGENC_IS_MBC_NEWLINE(encode, s, end)) goto fail;
+ sprev = s;
+ s += n;
+ }
+ p++;
+ STAT_OP_OUT;
+ break;
+
+ case OP_STATE_CHECK_ANYCHAR_ML_STAR_PEEK_NEXT:
+ STAT_OP_IN(OP_STATE_CHECK_ANYCHAR_ML_STAR_PEEK_NEXT);
+
+ GET_STATE_CHECK_NUM_INC(mem, p);
+ while (s < end) {
+ STATE_CHECK_VAL(scv, mem);
+ if (scv) goto fail;
+
+ if (*p == *s) {
+ STACK_PUSH_ALT_WITH_STATE_CHECK(p + 1, s, sprev, mem);
+ }
+ n = enc_len(encode, s);
+ if (n >1) {
+ DATA_ENSURE(n);
+ sprev = s;
+ s += n;
+ }
+ else {
+ sprev = s;
+ s++;
+ }
+ }
+ p++;
+ STAT_OP_OUT;
+ break;
+#endif /* USE_COMBINATION_EXPLOSION_CHECK */
+
case OP_WORD: STAT_OP_IN(OP_WORD);
DATA_ENSURE(1);
if (! ONIGENC_IS_MBC_WORD(encode, s, end))
continue;
break;
+#ifdef USE_COMBINATION_EXPLOSION_CHECK
+ case OP_STATE_CHECK_PUSH: STAT_OP_IN(OP_STATE_CHECK_PUSH);
+ GET_STATE_CHECK_NUM_INC(mem, p);
+ STATE_CHECK_VAL(scv, mem);
+ if (scv) goto fail;
+
+ GET_RELADDR_INC(addr, p);
+ STACK_PUSH_ALT_WITH_STATE_CHECK(p + addr, s, sprev, mem);
+ STAT_OP_OUT;
+ continue;
+ break;
+
+ case OP_STATE_CHECK_PUSH_OR_JUMP: STAT_OP_IN(OP_STATE_CHECK_PUSH_OR_JUMP);
+ GET_STATE_CHECK_NUM_INC(mem, p);
+ GET_RELADDR_INC(addr, p);
+ STATE_CHECK_VAL(scv, mem);
+ if (scv) {
+ p += addr;
+ }
+ else {
+ STACK_PUSH_ALT_WITH_STATE_CHECK(p + addr, s, sprev, mem);
+ }
+ STAT_OP_OUT;
+ continue;
+ break;
+
+ case OP_STATE_CHECK: STAT_OP_IN(OP_STATE_CHECK);
+ GET_STATE_CHECK_NUM_INC(mem, p);
+ STATE_CHECK_VAL(scv, mem);
+ if (scv) goto fail;
+
+ STACK_PUSH_STATE_CHECK(s, mem);
+ STAT_OP_OUT;
+ continue;
+ break;
+#endif /* USE_COMBINATION_EXPLOSION_CHECK */
+
case OP_POP: STAT_OP_IN(OP_POP);
STACK_POP_ONE;
STAT_OP_OUT;
repeat_inc:
stkp->u.repeat.count++;
- if (stkp->u.repeat.count == reg->repeat_range[mem].upper) {
+ if (stkp->u.repeat.count >= reg->repeat_range[mem].upper) {
/* end of repeat. Nothing to do. */
}
else if (stkp->u.repeat.count >= reg->repeat_range[mem].lower) {
repeat_inc_ng:
stkp->u.repeat.count++;
- if (stkp->u.repeat.count < reg->repeat_range[mem].upper ||
- IS_REPEAT_INFINITE(reg->repeat_range[mem].upper)) {
+ if (stkp->u.repeat.count < reg->repeat_range[mem].upper) {
if (stkp->u.repeat.count >= reg->repeat_range[mem].lower) {
UChar* pcode = stkp->u.repeat.pcode;
p = stk->u.state.pcode;
s = stk->u.state.pstr;
sprev = stk->u.state.pstr_prev;
+
+#ifdef USE_COMBINATION_EXPLOSION_CHECK
+ if (stk->u.state.state_check != 0) {
+ stk->type = STK_STATE_CHECK_MARK;
+ stk++;
+ }
+#endif
+
STAT_OP_OUT;
continue;
break;
const UChar* text, const UChar* text_end,
const UChar* text_range)
{
- const UChar *s, *t, *p, *end;
+ const UChar *s, *se, *t, *p, *end;
const UChar *tail;
- int skip;
+ int skip, tlen1;
#ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "bm_search_notrev: text: %d, text_end: %d, text_range: %d\n",
(int )text, (int )text_end, (int )text_range);
#endif
- end = text_range + (target_end - target) - 1;
+ tlen1 = (target_end - target) - 1;
+ end = text_range + tlen1;
if (end > text_end)
end = text_end;
tail = target_end - 1;
s = text;
- while ((s - text) < target_end - target) {
- s += enc_len(reg->enc, s);
- }
- s--; /* set to text check tail position. */
if (IS_NULL(reg->int_map)) {
while (s < end) {
- p = s;
+ p = se = s + tlen1;
t = tail;
- while (t >= target && *p == *t) {
- p--; t--;
+ while (*p == *t && t >= target) {
+ p--; t--;
}
- if (t < target) return (UChar* )(p + 1);
+ if (t < target) return (UChar* )s;
- skip = reg->map[*s];
- p = s + 1;
- if (p >= text_end) return (UChar* )NULL;
- t = p;
+ skip = reg->map[*se];
+ t = s;
do {
- p += enc_len(reg->enc, p);
- } while ((p - t) < skip && p < text_end);
-
- s += (p - t);
+ s += enc_len(reg->enc, s);
+ } while ((s - t) < skip && s < end);
}
}
else {
while (s < end) {
- p = s;
+ p = se = s + tlen1;
t = tail;
- while (t >= target && *p == *t) {
- p--; t--;
+ while (*p == *t && t >= target) {
+ p--; t--;
}
- if (t < target) return (UChar* )(p + 1);
+ if (t < target) return (UChar* )s;
- skip = reg->int_map[*s];
- p = s + 1;
- if (p >= text_end) return (UChar* )NULL;
- t = p;
+ skip = reg->int_map[*se];
+ t = s;
do {
- p += enc_len(reg->enc, p);
- } while ((p - t) < skip && p < text_end);
-
- s += (p - t);
+ s += enc_len(reg->enc, s);
+ } while ((s - t) < skip && s < end);
}
}
+
return (UChar* )NULL;
}
#endif /* USE_RECOMPILE_API && USE_MULTI_THREAD_SYSTEM */
MATCH_ARG_INIT(msa, option, region, at);
+ STATE_CHECK_BUFF_INIT(msa, end - str, reg->num_comb_exp_check);
if (region
#ifdef USE_POSIX_REGION_OPTION
int r;
UChar *s, *prev;
MatchArg msa;
+ const UChar *orig_start = start;
#if defined(USE_RECOMPILE_API) && defined(USE_MULTI_THREAD_SYSTEM)
start:
prev = (UChar* )NULL;
MATCH_ARG_INIT(msa, option, region, start);
+#ifdef USE_COMBINATION_EXPLOSION_CHECK
+ msa.state_check_buff = (void* )0;
+#endif
MATCH_AND_RETURN_CHECK;
goto mismatch;
}
(int )(end - str), (int )(start - str), (int )(range - str));
#endif
- MATCH_ARG_INIT(msa, option, region, start);
+ MATCH_ARG_INIT(msa, option, region, orig_start);
+ STATE_CHECK_BUFF_INIT(msa, end - str, reg->num_comb_exp_check);
s = (UChar* )start;
if (range > start) { /* forward search */
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