diff options
Diffstat (limited to 'trunk/regcomp.c')
| -rw-r--r-- | trunk/regcomp.c | 6311 |
1 files changed, 0 insertions, 6311 deletions
diff --git a/trunk/regcomp.c b/trunk/regcomp.c deleted file mode 100644 index cb54c44145..0000000000 --- a/trunk/regcomp.c +++ /dev/null @@ -1,6311 +0,0 @@ -/********************************************************************** - regcomp.c - Oniguruma (regular expression library) -**********************************************************************/ -/*- - * Copyright (c) 2002-2007 K.Kosako <sndgk393 AT ybb DOT ne DOT jp> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include "regparse.h" - -OnigCaseFoldType OnigDefaultCaseFoldFlag = ONIGENC_CASE_FOLD_MIN; - -extern OnigCaseFoldType -onig_get_default_case_fold_flag(void) -{ - return OnigDefaultCaseFoldFlag; -} - -extern int -onig_set_default_case_fold_flag(OnigCaseFoldType case_fold_flag) -{ - OnigDefaultCaseFoldFlag = case_fold_flag; - return 0; -} - - -#ifndef PLATFORM_UNALIGNED_WORD_ACCESS -static unsigned char PadBuf[WORD_ALIGNMENT_SIZE]; -#endif - -static UChar* -str_dup(UChar* s, UChar* end) -{ - int len = end - s; - - if (len > 0) { - UChar* r = (UChar* )xmalloc(len + 1); - CHECK_NULL_RETURN(r); - xmemcpy(r, s, len); - r[len] = (UChar )0; - return r; - } - else return NULL; -} - -static void -swap_node(Node* a, Node* b) -{ - Node c; - c = *a; *a = *b; *b = c; - - if (NTYPE(a) == NT_STR) { - StrNode* sn = NSTR(a); - if (sn->capa == 0) { - int len = sn->end - sn->s; - sn->s = sn->buf; - sn->end = sn->s + len; - } - } - - if (NTYPE(b) == NT_STR) { - StrNode* sn = NSTR(b); - if (sn->capa == 0) { - int len = sn->end - sn->s; - sn->s = sn->buf; - sn->end = sn->s + len; - } - } -} - -static OnigDistance -distance_add(OnigDistance d1, OnigDistance d2) -{ - if (d1 == ONIG_INFINITE_DISTANCE || d2 == ONIG_INFINITE_DISTANCE) - return ONIG_INFINITE_DISTANCE; - else { - if (d1 <= ONIG_INFINITE_DISTANCE - d2) return d1 + d2; - else return ONIG_INFINITE_DISTANCE; - } -} - -static OnigDistance -distance_multiply(OnigDistance d, int m) -{ - if (m == 0) return 0; - - if (d < ONIG_INFINITE_DISTANCE / m) - return d * m; - else - return ONIG_INFINITE_DISTANCE; -} - -static int -bitset_is_empty(BitSetRef bs) -{ - int i; - for (i = 0; i < (int )BITSET_SIZE; i++) { - if (bs[i] != 0) return 0; - } - return 1; -} - -#ifdef ONIG_DEBUG -static int -bitset_on_num(BitSetRef bs) -{ - int i, n; - - n = 0; - for (i = 0; i < SINGLE_BYTE_SIZE; i++) { - if (BITSET_AT(bs, i)) n++; - } - return n; -} -#endif - -extern int -onig_bbuf_init(BBuf* buf, int size) -{ - if (size <= 0) { - size = 0; - buf->p = NULL; - } - else { - buf->p = (UChar* )xmalloc(size); - if (IS_NULL(buf->p)) return(ONIGERR_MEMORY); - } - - buf->alloc = size; - buf->used = 0; - return 0; -} - - -#ifdef USE_SUBEXP_CALL - -static int -unset_addr_list_init(UnsetAddrList* uslist, int size) -{ - UnsetAddr* p; - - p = (UnsetAddr* )xmalloc(sizeof(UnsetAddr)* size); - CHECK_NULL_RETURN_MEMERR(p); - uslist->num = 0; - uslist->alloc = size; - uslist->us = p; - return 0; -} - -static void -unset_addr_list_end(UnsetAddrList* uslist) -{ - if (IS_NOT_NULL(uslist->us)) - xfree(uslist->us); -} - -static int -unset_addr_list_add(UnsetAddrList* uslist, int offset, struct _Node* node) -{ - UnsetAddr* p; - int size; - - if (uslist->num >= uslist->alloc) { - size = uslist->alloc * 2; - p = (UnsetAddr* )xrealloc(uslist->us, sizeof(UnsetAddr) * size); - CHECK_NULL_RETURN_MEMERR(p); - uslist->alloc = size; - uslist->us = p; - } - - uslist->us[uslist->num].offset = offset; - uslist->us[uslist->num].target = node; - uslist->num++; - return 0; -} -#endif /* USE_SUBEXP_CALL */ - - -static int -add_opcode(regex_t* reg, int opcode) -{ - BBUF_ADD1(reg, opcode); - return 0; -} - -#ifdef USE_COMBINATION_EXPLOSION_CHECK -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; -} -#endif - -static int -add_rel_addr(regex_t* reg, int addr) -{ - RelAddrType ra = (RelAddrType )addr; - - BBUF_ADD(reg, &ra, SIZE_RELADDR); - return 0; -} - -static int -add_abs_addr(regex_t* reg, int addr) -{ - AbsAddrType ra = (AbsAddrType )addr; - - BBUF_ADD(reg, &ra, SIZE_ABSADDR); - return 0; -} - -static int -add_length(regex_t* reg, int len) -{ - LengthType l = (LengthType )len; - - BBUF_ADD(reg, &l, SIZE_LENGTH); - return 0; -} - -static int -add_mem_num(regex_t* reg, int num) -{ - MemNumType n = (MemNumType )num; - - BBUF_ADD(reg, &n, SIZE_MEMNUM); - return 0; -} - -static int -add_pointer(regex_t* reg, void* addr) -{ - PointerType ptr = (PointerType )addr; - - BBUF_ADD(reg, &ptr, SIZE_POINTER); - return 0; -} - -static int -add_option(regex_t* reg, OnigOptionType option) -{ - BBUF_ADD(reg, &option, SIZE_OPTION); - return 0; -} - -static int -add_opcode_rel_addr(regex_t* reg, int opcode, int addr) -{ - int r; - - r = add_opcode(reg, opcode); - if (r) return r; - r = add_rel_addr(reg, addr); - return r; -} - -static int -add_bytes(regex_t* reg, UChar* bytes, int len) -{ - BBUF_ADD(reg, bytes, len); - return 0; -} - -static int -add_bitset(regex_t* reg, BitSetRef bs) -{ - BBUF_ADD(reg, bs, SIZE_BITSET); - return 0; -} - -static int -add_opcode_option(regex_t* reg, int opcode, OnigOptionType option) -{ - int r; - - r = add_opcode(reg, opcode); - if (r) return r; - r = add_option(reg, option); - return r; -} - -static int compile_length_tree(Node* node, regex_t* reg); -static int compile_tree(Node* node, regex_t* reg); - - -#define IS_NEED_STR_LEN_OP_EXACT(op) \ - ((op) == OP_EXACTN || (op) == OP_EXACTMB2N ||\ - (op) == OP_EXACTMB3N || (op) == OP_EXACTMBN || (op) == OP_EXACTN_IC) - -static int -select_str_opcode(int mb_len, int str_len, int ignore_case) -{ - int op; - - if (ignore_case) { - switch (str_len) { - case 1: op = OP_EXACT1_IC; break; - default: op = OP_EXACTN_IC; break; - } - } - else { - switch (mb_len) { - case 1: - switch (str_len) { - case 1: op = OP_EXACT1; break; - case 2: op = OP_EXACT2; break; - case 3: op = OP_EXACT3; break; - case 4: op = OP_EXACT4; break; - case 5: op = OP_EXACT5; break; - default: op = OP_EXACTN; break; - } - break; - - case 2: - switch (str_len) { - case 1: op = OP_EXACTMB2N1; break; - case 2: op = OP_EXACTMB2N2; break; - case 3: op = OP_EXACTMB2N3; break; - default: op = OP_EXACTMB2N; break; - } - break; - - case 3: - op = OP_EXACTMB3N; - break; - - default: - op = OP_EXACTMBN; - break; - } - } - return op; -} - -static int -compile_tree_empty_check(Node* node, regex_t* reg, int empty_info) -{ - int r; - int saved_num_null_check = reg->num_null_check; - - if (empty_info != 0) { - r = add_opcode(reg, OP_NULL_CHECK_START); - if (r) return r; - r = add_mem_num(reg, reg->num_null_check); /* NULL CHECK ID */ - if (r) return r; - reg->num_null_check++; - } - - r = compile_tree(node, reg); - if (r) return r; - - if (empty_info != 0) { - if (empty_info == NQ_TARGET_IS_EMPTY) - r = add_opcode(reg, OP_NULL_CHECK_END); - else if (empty_info == NQ_TARGET_IS_EMPTY_MEM) - r = add_opcode(reg, OP_NULL_CHECK_END_MEMST); - else if (empty_info == NQ_TARGET_IS_EMPTY_REC) - r = add_opcode(reg, OP_NULL_CHECK_END_MEMST_PUSH); - - if (r) return r; - r = add_mem_num(reg, saved_num_null_check); /* NULL CHECK ID */ - } - return r; -} - -#ifdef USE_SUBEXP_CALL -static int -compile_call(CallNode* node, regex_t* reg) -{ - int r; - - r = add_opcode(reg, OP_CALL); - if (r) return r; - r = unset_addr_list_add(node->unset_addr_list, BBUF_GET_OFFSET_POS(reg), - node->target); - if (r) return r; - r = add_abs_addr(reg, 0 /*dummy addr.*/); - return r; -} -#endif - -static int -compile_tree_n_times(Node* node, int n, regex_t* reg) -{ - int i, r; - - for (i = 0; i < n; i++) { - r = compile_tree(node, reg); - if (r) return r; - } - return 0; -} - -static int -add_compile_string_length(UChar* s ARG_UNUSED, int mb_len, int str_len, - regex_t* reg ARG_UNUSED, int ignore_case) -{ - int len; - int op = select_str_opcode(mb_len, str_len, ignore_case); - - len = SIZE_OPCODE; - - if (op == OP_EXACTMBN) len += SIZE_LENGTH; - if (IS_NEED_STR_LEN_OP_EXACT(op)) - len += SIZE_LENGTH; - - len += mb_len * str_len; - return len; -} - -static int -add_compile_string(UChar* s, int mb_len, int str_len, - regex_t* reg, int ignore_case) -{ - int op = select_str_opcode(mb_len, str_len, ignore_case); - add_opcode(reg, op); - - if (op == OP_EXACTMBN) - add_length(reg, mb_len); - - if (IS_NEED_STR_LEN_OP_EXACT(op)) { - if (op == OP_EXACTN_IC) - add_length(reg, mb_len * str_len); - else - add_length(reg, str_len); - } - - add_bytes(reg, s, mb_len * str_len); - return 0; -} - - -static int -compile_length_string_node(Node* node, regex_t* reg) -{ - int rlen, r, len, prev_len, slen, ambig; - OnigEncoding enc = reg->enc; - UChar *p, *prev; - StrNode* sn; - - sn = NSTR(node); - if (sn->end <= sn->s) - return 0; - - ambig = NSTRING_IS_AMBIG(node); - - p = prev = sn->s; - prev_len = enclen(enc, p, sn->end); - p += prev_len; - slen = 1; - rlen = 0; - - for (; p < sn->end; ) { - len = enclen(enc, p, sn->end); - if (len == prev_len) { - slen++; - } - else { - r = add_compile_string_length(prev, prev_len, slen, reg, ambig); - rlen += r; - prev = p; - slen = 1; - prev_len = len; - } - p += len; - } - r = add_compile_string_length(prev, prev_len, slen, reg, ambig); - rlen += r; - return rlen; -} - -static int -compile_length_string_raw_node(StrNode* sn, regex_t* reg) -{ - if (sn->end <= sn->s) - return 0; - - return add_compile_string_length(sn->s, 1 /* sb */, sn->end - sn->s, reg, 0); -} - -static int -compile_string_node(Node* node, regex_t* reg) -{ - int r, len, prev_len, slen, ambig; - OnigEncoding enc = reg->enc; - UChar *p, *prev, *end; - StrNode* sn; - - sn = NSTR(node); - if (sn->end <= sn->s) - return 0; - - end = sn->end; - ambig = NSTRING_IS_AMBIG(node); - - p = prev = sn->s; - prev_len = enclen(enc, p, end); - p += prev_len; - slen = 1; - - for (; p < end; ) { - len = enclen(enc, p, end); - if (len == prev_len) { - slen++; - } - else { - r = add_compile_string(prev, prev_len, slen, reg, ambig); - if (r) return r; - - prev = p; - slen = 1; - prev_len = len; - } - - p += len; - } - return add_compile_string(prev, prev_len, slen, reg, ambig); -} - -static int -compile_string_raw_node(StrNode* sn, regex_t* reg) -{ - if (sn->end <= sn->s) - return 0; - - return add_compile_string(sn->s, 1 /* sb */, sn->end - sn->s, reg, 0); -} - -static int -add_multi_byte_cclass(BBuf* mbuf, regex_t* reg) -{ -#ifdef PLATFORM_UNALIGNED_WORD_ACCESS - add_length(reg, mbuf->used); - return add_bytes(reg, mbuf->p, mbuf->used); -#else - int r, pad_size; - UChar* p = BBUF_GET_ADD_ADDRESS(reg) + SIZE_LENGTH; - - GET_ALIGNMENT_PAD_SIZE(p, pad_size); - add_length(reg, mbuf->used + (WORD_ALIGNMENT_SIZE - 1)); - if (pad_size != 0) add_bytes(reg, PadBuf, pad_size); - - r = add_bytes(reg, mbuf->p, mbuf->used); - - /* padding for return value from compile_length_cclass_node() to be fix. */ - pad_size = (WORD_ALIGNMENT_SIZE - 1) - pad_size; - if (pad_size != 0) add_bytes(reg, PadBuf, pad_size); - return r; -#endif -} - -static int -compile_length_cclass_node(CClassNode* cc, regex_t* reg) -{ - int len; - - if (IS_NCCLASS_SHARE(cc)) { - len = SIZE_OPCODE + SIZE_POINTER; - return len; - } - - if (IS_NULL(cc->mbuf)) { - len = SIZE_OPCODE + SIZE_BITSET; - } - else { - if (ONIGENC_MBC_MINLEN(reg->enc) > 1 || bitset_is_empty(cc->bs)) { - len = SIZE_OPCODE; - } - else { - len = SIZE_OPCODE + SIZE_BITSET; - } -#ifdef PLATFORM_UNALIGNED_WORD_ACCESS - len += SIZE_LENGTH + cc->mbuf->used; -#else - len += SIZE_LENGTH + cc->mbuf->used + (WORD_ALIGNMENT_SIZE - 1); -#endif - } - - return len; -} - -static int -compile_cclass_node(CClassNode* cc, regex_t* reg) -{ - int r; - - if (IS_NCCLASS_SHARE(cc)) { - add_opcode(reg, OP_CCLASS_NODE); - r = add_pointer(reg, cc); - return r; - } - - if (IS_NULL(cc->mbuf)) { - if (IS_NCCLASS_NOT(cc)) - add_opcode(reg, OP_CCLASS_NOT); - else - add_opcode(reg, OP_CCLASS); - - r = add_bitset(reg, cc->bs); - } - else { - if (ONIGENC_MBC_MINLEN(reg->enc) > 1 || bitset_is_empty(cc->bs)) { - if (IS_NCCLASS_NOT(cc)) - add_opcode(reg, OP_CCLASS_MB_NOT); - else - add_opcode(reg, OP_CCLASS_MB); - - r = add_multi_byte_cclass(cc->mbuf, reg); - } - else { - if (IS_NCCLASS_NOT(cc)) - add_opcode(reg, OP_CCLASS_MIX_NOT); - else - add_opcode(reg, OP_CCLASS_MIX); - - r = add_bitset(reg, cc->bs); - if (r) return r; - r = add_multi_byte_cclass(cc->mbuf, reg); - } - } - - return r; -} - -static int -entry_repeat_range(regex_t* reg, int id, int lower, int upper) -{ -#define REPEAT_RANGE_ALLOC 4 - - OnigRepeatRange* p; - - if (reg->repeat_range_alloc == 0) { - p = (OnigRepeatRange* )xmalloc(sizeof(OnigRepeatRange) * REPEAT_RANGE_ALLOC); - CHECK_NULL_RETURN_MEMERR(p); - reg->repeat_range = p; - reg->repeat_range_alloc = REPEAT_RANGE_ALLOC; - } - else if (reg->repeat_range_alloc <= id) { - int n; - n = reg->repeat_range_alloc + REPEAT_RANGE_ALLOC; - p = (OnigRepeatRange* )xrealloc(reg->repeat_range, - sizeof(OnigRepeatRange) * n); - CHECK_NULL_RETURN_MEMERR(p); - reg->repeat_range = p; - reg->repeat_range_alloc = n; - } - else { - p = reg->repeat_range; - } - - p[id].lower = lower; - p[id].upper = (IS_REPEAT_INFINITE(upper) ? 0x7fffffff : upper); - return 0; -} - -static int -compile_range_repeat_node(QtfrNode* qn, int target_len, int empty_info, - regex_t* reg) -{ - int r; - int num_repeat = reg->num_repeat; - - r = add_opcode(reg, qn->greedy ? OP_REPEAT : OP_REPEAT_NG); - if (r) return r; - r = add_mem_num(reg, num_repeat); /* OP_REPEAT ID */ - reg->num_repeat++; - if (r) return r; - r = add_rel_addr(reg, target_len + SIZE_OP_REPEAT_INC); - if (r) return r; - - r = entry_repeat_range(reg, num_repeat, qn->lower, qn->upper); - if (r) return r; - - r = compile_tree_empty_check(qn->target, reg, empty_info); - if (r) return r; - - if ( -#ifdef USE_SUBEXP_CALL - reg->num_call > 0 || -#endif - IS_QUANTIFIER_IN_REPEAT(qn)) { - r = add_opcode(reg, qn->greedy ? OP_REPEAT_INC_SG : OP_REPEAT_INC_NG_SG); - } - else { - r = add_opcode(reg, qn->greedy ? OP_REPEAT_INC : OP_REPEAT_INC_NG); - } - if (r) return r; - r = add_mem_num(reg, num_repeat); /* OP_REPEAT ID */ - return r; -} - -static int -is_anychar_star_quantifier(QtfrNode* qn) -{ - if (qn->greedy && IS_REPEAT_INFINITE(qn->upper) && - NTYPE(qn->target) == NT_CANY) - return 1; - else - return 0; -} - -#define QUANTIFIER_EXPAND_LIMIT_SIZE 50 -#define CKN_ON (ckn > 0) - -#ifdef USE_COMBINATION_EXPLOSION_CHECK - -static int -compile_length_quantifier_node(QtfrNode* 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) == NT_CANY) { - if (qn->greedy && infinite) { - if (IS_NOT_NULL(qn->next_head_exact) && !CKN_ON) - 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_quantifier_node(QtfrNode* 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_quantifier(qn)) { - r = compile_tree_n_times(qn->target, qn->lower, reg); - if (r) return r; - if (IS_NOT_NULL(qn->next_head_exact) && !CKN_ON) { - if (IS_MULTILINE(reg->options)) - r = add_opcode(reg, OP_ANYCHAR_ML_STAR_PEEK_NEXT); - else - r = add_opcode(reg, 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, NSTR(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_quantifier_node(QtfrNode* qn, regex_t* reg) -{ - int len, mod_tlen; - 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; - - /* anychar repeat */ - if (NTYPE(qn->target) == NT_CANY) { - if (qn->greedy && infinite) { - if (IS_NOT_NULL(qn->next_head_exact)) - return SIZE_OP_ANYCHAR_STAR_PEEK_NEXT + tlen * qn->lower; - else - return SIZE_OP_ANYCHAR_STAR + tlen * qn->lower; - } - } - - 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 || tlen * qn->lower <= QUANTIFIER_EXPAND_LIMIT_SIZE)) { - if (qn->lower == 1 && tlen > QUANTIFIER_EXPAND_LIMIT_SIZE) { - len = SIZE_OP_JUMP; - } - else { - len = tlen * qn->lower; - } - - if (qn->greedy) { - if (IS_NOT_NULL(qn->head_exact)) - len += SIZE_OP_PUSH_OR_JUMP_EXACT1 + mod_tlen + SIZE_OP_JUMP; - else if (IS_NOT_NULL(qn->next_head_exact)) - len += SIZE_OP_PUSH_IF_PEEK_NEXT + mod_tlen + SIZE_OP_JUMP; - else - len += SIZE_OP_PUSH + mod_tlen + SIZE_OP_JUMP; - } - else - len += SIZE_OP_JUMP + mod_tlen + SIZE_OP_PUSH; - } - else if (qn->upper == 0 && qn->is_refered != 0) { /* /(?<n>..){0}/ */ - len = SIZE_OP_JUMP + tlen; - } - else if (!infinite && qn->greedy && - (qn->upper == 1 || (tlen + SIZE_OP_PUSH) * qn->upper - <= QUANTIFIER_EXPAND_LIMIT_SIZE)) { - len = tlen * qn->lower; - len += (SIZE_OP_PUSH + tlen) * (qn->upper - qn->lower); - } - else if (!qn->greedy && qn->upper == 1 && qn->lower == 0) { /* '??' */ - len = SIZE_OP_PUSH + SIZE_OP_JUMP + tlen; - } - else { - len = SIZE_OP_REPEAT_INC - + mod_tlen + SIZE_OPCODE + SIZE_RELADDR + SIZE_MEMNUM; - } - - return len; -} - -static int -compile_quantifier_node(QtfrNode* qn, regex_t* reg) -{ - int i, r, mod_tlen; - 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; - - if (is_anychar_star_quantifier(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, OP_ANYCHAR_ML_STAR_PEEK_NEXT); - else - r = add_opcode(reg, OP_ANYCHAR_STAR_PEEK_NEXT); - if (r) return r; - return add_bytes(reg, NSTR(qn->next_head_exact)->s, 1); - } - else { - if (IS_MULTILINE(reg->options)) - return add_opcode(reg, OP_ANYCHAR_ML_STAR); - else - return add_opcode(reg, OP_ANYCHAR_STAR); - } - } - - 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 || tlen * qn->lower <= QUANTIFIER_EXPAND_LIMIT_SIZE)) { - if (qn->lower == 1 && tlen > QUANTIFIER_EXPAND_LIMIT_SIZE) { - if (qn->greedy) { - if (IS_NOT_NULL(qn->head_exact)) - r = add_opcode_rel_addr(reg, OP_JUMP, SIZE_OP_PUSH_OR_JUMP_EXACT1); - else if (IS_NOT_NULL(qn->next_head_exact)) - r = add_opcode_rel_addr(reg, OP_JUMP, SIZE_OP_PUSH_IF_PEEK_NEXT); - else - r = add_opcode_rel_addr(reg, OP_JUMP, SIZE_OP_PUSH); - } - else { - r = add_opcode_rel_addr(reg, OP_JUMP, SIZE_OP_JUMP); - } - if (r) return r; - } - else { - r = compile_tree_n_times(qn->target, qn->lower, reg); - if (r) return r; - } - - if (qn->greedy) { - if (IS_NOT_NULL(qn->head_exact)) { - r = add_opcode_rel_addr(reg, OP_PUSH_OR_JUMP_EXACT1, - mod_tlen + SIZE_OP_JUMP); - if (r) return r; - add_bytes(reg, NSTR(qn->head_exact)->s, 1); - 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 )SIZE_OP_PUSH_OR_JUMP_EXACT1)); - } - else if (IS_NOT_NULL(qn->next_head_exact)) { - r = add_opcode_rel_addr(reg, OP_PUSH_IF_PEEK_NEXT, - mod_tlen + SIZE_OP_JUMP); - if (r) return r; - add_bytes(reg, NSTR(qn->next_head_exact)->s, 1); - 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 )SIZE_OP_PUSH_IF_PEEK_NEXT)); - } - 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 )SIZE_OP_PUSH)); - } - } - else { - 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; - r = add_opcode_rel_addr(reg, OP_PUSH, -(mod_tlen + (int )SIZE_OP_PUSH)); - } - } - else if (qn->upper == 0 && 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 if (!infinite && qn->greedy && - (qn->upper == 1 || (tlen + SIZE_OP_PUSH) * qn->upper - <= QUANTIFIER_EXPAND_LIMIT_SIZE)) { - int n = qn->upper - qn->lower; - - r = compile_tree_n_times(qn->target, qn->lower, reg); - if (r) return r; - - for (i = 0; i < n; i++) { - r = add_opcode_rel_addr(reg, OP_PUSH, - (n - i) * tlen + (n - i - 1) * SIZE_OP_PUSH); - if (r) return r; - r = compile_tree(qn->target, reg); - if (r) return r; - } - } - else if (!qn->greedy && qn->upper == 1 && qn->lower == 0) { /* '??' */ - 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); - } - return r; -} -#endif /* USE_COMBINATION_EXPLOSION_CHECK */ - -static int -compile_length_option_node(EncloseNode* node, regex_t* reg) -{ - int tlen; - OnigOptionType prev = reg->options; - - reg->options = node->option; - tlen = compile_length_tree(node->target, reg); - reg->options = prev; - - if (tlen < 0) return tlen; - - if (IS_DYNAMIC_OPTION(prev ^ node->option)) { - return SIZE_OP_SET_OPTION_PUSH + SIZE_OP_SET_OPTION + SIZE_OP_FAIL - + tlen + SIZE_OP_SET_OPTION; - } - else - return tlen; -} - -static int -compile_option_node(EncloseNode* node, regex_t* reg) -{ - int r; - OnigOptionType prev = reg->options; - - if (IS_DYNAMIC_OPTION(prev ^ node->option)) { - r = add_opcode_option(reg, OP_SET_OPTION_PUSH, node->option); - if (r) return r; - r = add_opcode_option(reg, OP_SET_OPTION, prev); - if (r) return r; - r = add_opcode(reg, OP_FAIL); - if (r) return r; - } - - reg->options = node->option; - r = compile_tree(node->target, reg); - reg->options = prev; - - if (IS_DYNAMIC_OPTION(prev ^ node->option)) { - if (r) return r; - r = add_opcode_option(reg, OP_SET_OPTION, prev); - } - return r; -} - -static int -compile_length_enclose_node(EncloseNode* node, regex_t* reg) -{ - int len; - int tlen; - - if (node->type == ENCLOSE_OPTION) - return compile_length_option_node(node, reg); - - if (node->target) { - tlen = compile_length_tree(node->target, reg); - if (tlen < 0) return tlen; - } - else - tlen = 0; - - switch (node->type) { - case ENCLOSE_MEMORY: -#ifdef USE_SUBEXP_CALL - if (IS_ENCLOSE_CALLED(node)) { - len = SIZE_OP_MEMORY_START_PUSH + tlen - + SIZE_OP_CALL + SIZE_OP_JUMP + SIZE_OP_RETURN; - if (BIT_STATUS_AT(reg->bt_mem_end, node->regnum)) - len += (IS_ENCLOSE_RECURSION(node) - ? SIZE_OP_MEMORY_END_PUSH_REC : SIZE_OP_MEMORY_END_PUSH); - else - len += (IS_ENCLOSE_RECURSION(node) - ? SIZE_OP_MEMORY_END_REC : SIZE_OP_MEMORY_END); - } - else -#endif - { - if (BIT_STATUS_AT(reg->bt_mem_start, node->regnum)) - len = SIZE_OP_MEMORY_START_PUSH; - else - len = SIZE_OP_MEMORY_START; - - len += tlen + (BIT_STATUS_AT(reg->bt_mem_end, node->regnum) - ? SIZE_OP_MEMORY_END_PUSH : SIZE_OP_MEMORY_END); - } - break; - - case ENCLOSE_STOP_BACKTRACK: - if (IS_ENCLOSE_STOP_BT_SIMPLE_REPEAT(node)) { - QtfrNode* qn = NQTFR(node->target); - tlen = compile_length_tree(qn->target, reg); - if (tlen < 0) return tlen; - - len = tlen * qn->lower - + SIZE_OP_PUSH + tlen + SIZE_OP_POP + SIZE_OP_JUMP; - } - else { - len = SIZE_OP_PUSH_STOP_BT + tlen + SIZE_OP_POP_STOP_BT; - } - break; - - default: - return ONIGERR_TYPE_BUG; - break; - } - - return len; -} - -static int get_char_length_tree(Node* node, regex_t* reg, int* len); - -static int -compile_enclose_node(EncloseNode* node, regex_t* reg) -{ - int r, len; - - if (node->type == ENCLOSE_OPTION) - return compile_option_node(node, reg); - - switch (node->type) { - case ENCLOSE_MEMORY: -#ifdef USE_SUBEXP_CALL - if (IS_ENCLOSE_CALLED(node)) { - r = add_opcode(reg, OP_CALL); - if (r) return r; - node->call_addr = BBUF_GET_OFFSET_POS(reg) + SIZE_ABSADDR + SIZE_OP_JUMP; - node->state |= NST_ADDR_FIXED; - r = add_abs_addr(reg, (int )node->call_addr); - if (r) return r; - len = compile_length_tree(node->target, reg); - len += (SIZE_OP_MEMORY_START_PUSH + SIZE_OP_RETURN); - if (BIT_STATUS_AT(reg->bt_mem_end, node->regnum)) - len += (IS_ENCLOSE_RECURSION(node) - ? SIZE_OP_MEMORY_END_PUSH_REC : SIZE_OP_MEMORY_END_PUSH); - else - len += (IS_ENCLOSE_RECURSION(node) - ? SIZE_OP_MEMORY_END_REC : SIZE_OP_MEMORY_END); - - r = add_opcode_rel_addr(reg, OP_JUMP, len); - if (r) return r; - } -#endif - if (BIT_STATUS_AT(reg->bt_mem_start, node->regnum)) - r = add_opcode(reg, OP_MEMORY_START_PUSH); - else - r = add_opcode(reg, OP_MEMORY_START); - if (r) return r; - r = add_mem_num(reg, node->regnum); - if (r) return r; - r = compile_tree(node->target, reg); - if (r) return r; -#ifdef USE_SUBEXP_CALL - if (IS_ENCLOSE_CALLED(node)) { - if (BIT_STATUS_AT(reg->bt_mem_end, node->regnum)) - r = add_opcode(reg, (IS_ENCLOSE_RECURSION(node) - ? OP_MEMORY_END_PUSH_REC : OP_MEMORY_END_PUSH)); - else - r = add_opcode(reg, (IS_ENCLOSE_RECURSION(node) - ? OP_MEMORY_END_REC : OP_MEMORY_END)); - - if (r) return r; - r = add_mem_num(reg, node->regnum); - if (r) return r; - r = add_opcode(reg, OP_RETURN); - } - else -#endif - { - if (BIT_STATUS_AT(reg->bt_mem_end, node->regnum)) - r = add_opcode(reg, OP_MEMORY_END_PUSH); - else - r = add_opcode(reg, OP_MEMORY_END); - if (r) return r; - r = add_mem_num(reg, node->regnum); - } - break; - - case ENCLOSE_STOP_BACKTRACK: - if (IS_ENCLOSE_STOP_BT_SIMPLE_REPEAT(node)) { - QtfrNode* qn = NQTFR(node->target); - r = compile_tree_n_times(qn->target, qn->lower, reg); - if (r) return r; - - len = compile_length_tree(qn->target, reg); - if (len < 0) return len; - - r = add_opcode_rel_addr(reg, OP_PUSH, len + SIZE_OP_POP + SIZE_OP_JUMP); - if (r) return r; - r = compile_tree(qn->target, reg); - if (r) return r; - r = add_opcode(reg, OP_POP); - if (r) return r; - r = add_opcode_rel_addr(reg, OP_JUMP, - -((int )SIZE_OP_PUSH + len + (int )SIZE_OP_POP + (int )SIZE_OP_JUMP)); - } - else { - r = add_opcode(reg, OP_PUSH_STOP_BT); - if (r) return r; - r = compile_tree(node->target, reg); - if (r) return r; - r = add_opcode(reg, OP_POP_STOP_BT); - } - break; - - default: - return ONIGERR_TYPE_BUG; - break; - } - - return r; -} - -static int -compile_length_anchor_node(AnchorNode* node, regex_t* reg) -{ - int len; - int tlen = 0; - - if (node->target) { - tlen = compile_length_tree(node->target, reg); - if (tlen < 0) return tlen; - } - - switch (node->type) { - case ANCHOR_PREC_READ: - len = SIZE_OP_PUSH_POS + tlen + SIZE_OP_POP_POS; - break; - case ANCHOR_PREC_READ_NOT: - len = SIZE_OP_PUSH_POS_NOT + tlen + SIZE_OP_FAIL_POS; - break; - case ANCHOR_LOOK_BEHIND: - len = SIZE_OP_LOOK_BEHIND + tlen; - break; - case ANCHOR_LOOK_BEHIND_NOT: - len = SIZE_OP_PUSH_LOOK_BEHIND_NOT + tlen + SIZE_OP_FAIL_LOOK_BEHIND_NOT; - break; - - default: - len = SIZE_OPCODE; - break; - } - - return len; -} - -static int -compile_anchor_node(AnchorNode* node, regex_t* reg) -{ - int r, len; - - switch (node->type) { - case ANCHOR_BEGIN_BUF: r = add_opcode(reg, OP_BEGIN_BUF); break; - case ANCHOR_END_BUF: r = add_opcode(reg, OP_END_BUF); break; - case ANCHOR_BEGIN_LINE: r = add_opcode(reg, OP_BEGIN_LINE); break; - case ANCHOR_END_LINE: r = add_opcode(reg, OP_END_LINE); break; - case ANCHOR_SEMI_END_BUF: r = add_opcode(reg, OP_SEMI_END_BUF); break; - case ANCHOR_BEGIN_POSITION: r = add_opcode(reg, OP_BEGIN_POSITION); break; - - case ANCHOR_WORD_BOUND: r = add_opcode(reg, OP_WORD_BOUND); break; - case ANCHOR_NOT_WORD_BOUND: r = add_opcode(reg, OP_NOT_WORD_BOUND); break; -#ifdef USE_WORD_BEGIN_END - case ANCHOR_WORD_BEGIN: r = add_opcode(reg, OP_WORD_BEGIN); break; - case ANCHOR_WORD_END: r = add_opcode(reg, OP_WORD_END); break; -#endif - - case ANCHOR_PREC_READ: - r = add_opcode(reg, OP_PUSH_POS); - if (r) return r; - r = compile_tree(node->target, reg); - if (r) return r; - r = add_opcode(reg, OP_POP_POS); - break; - - case ANCHOR_PREC_READ_NOT: - len = compile_length_tree(node->target, reg); - if (len < 0) return len; - r = add_opcode_rel_addr(reg, OP_PUSH_POS_NOT, len + SIZE_OP_FAIL_POS); - if (r) return r; - r = compile_tree(node->target, reg); - if (r) return r; - r = add_opcode(reg, OP_FAIL_POS); - break; - - case ANCHOR_LOOK_BEHIND: - { - int n; - r = add_opcode(reg, OP_LOOK_BEHIND); - if (r) return r; - if (node->char_len < 0) { - r = get_char_length_tree(node->target, reg, &n); - if (r) return ONIGERR_INVALID_LOOK_BEHIND_PATTERN; - } - else - n = node->char_len; - r = add_length(reg, n); - if (r) return r; - r = compile_tree(node->target, reg); - } - break; - - case ANCHOR_LOOK_BEHIND_NOT: - { - int n; - len = compile_length_tree(node->target, reg); - r = add_opcode_rel_addr(reg, OP_PUSH_LOOK_BEHIND_NOT, - len + SIZE_OP_FAIL_LOOK_BEHIND_NOT); - if (r) return r; - if (node->char_len < 0) { - r = get_char_length_tree(node->target, reg, &n); - if (r) return ONIGERR_INVALID_LOOK_BEHIND_PATTERN; - } - else - n = node->char_len; - r = add_length(reg, n); - if (r) return r; - r = compile_tree(node->target, reg); - if (r) return r; - r = add_opcode(reg, OP_FAIL_LOOK_BEHIND_NOT); - } - break; - - default: - return ONIGERR_TYPE_BUG; - break; - } - - return r; -} - -static int -compile_length_tree(Node* node, regex_t* reg) -{ - int len, type, r; - - type = NTYPE(node); - switch (type) { - case NT_LIST: - len = 0; - do { - r = compile_length_tree(NCAR(node), reg); - if (r < 0) return r; - len += r; - } while (IS_NOT_NULL(node = NCDR(node))); - r = len; - break; - - case NT_ALT: - { - int n; - - n = r = 0; - do { - r += compile_length_tree(NCAR(node), reg); - n++; - } while (IS_NOT_NULL(node = NCDR(node))); - r += (SIZE_OP_PUSH + SIZE_OP_JUMP) * (n - 1); - } - break; - - case NT_STR: - if (NSTRING_IS_RAW(node)) - r = compile_length_string_raw_node(NSTR(node), reg); - else - r = compile_length_string_node(node, reg); - break; - - case NT_CCLASS: - r = compile_length_cclass_node(NCCLASS(node), reg); - break; - - case NT_CTYPE: - case NT_CANY: - r = SIZE_OPCODE; - break; - - case NT_BREF: - { - BRefNode* br = NBREF(node); - -#ifdef USE_BACKREF_WITH_LEVEL - if (IS_BACKREF_NEST_LEVEL(br)) { - r = SIZE_OPCODE + SIZE_OPTION + SIZE_LENGTH + - SIZE_LENGTH + (SIZE_MEMNUM * br->back_num); - } - else -#endif - if (br->back_num == 1) { - r = ((!IS_IGNORECASE(reg->options) && br->back_static[0] <= 2) - ? SIZE_OPCODE : (SIZE_OPCODE + SIZE_MEMNUM)); - } - else { - r = SIZE_OPCODE + SIZE_LENGTH + (SIZE_MEMNUM * br->back_num); - } - } - break; - -#ifdef USE_SUBEXP_CALL - case NT_CALL: - r = SIZE_OP_CALL; - break; -#endif - - case NT_QTFR: - r = compile_length_quantifier_node(NQTFR(node), reg); - break; - - case NT_ENCLOSE: - r = compile_length_enclose_node(NENCLOSE(node), reg); - break; - - case NT_ANCHOR: - r = compile_length_anchor_node(NANCHOR(node), reg); - break; - - default: - return ONIGERR_TYPE_BUG; - break; - } - - return r; -} - -static int -compile_tree(Node* node, regex_t* reg) -{ - int n, type, len, pos, r = 0; - - type = NTYPE(node); - switch (type) { - case NT_LIST: - do { - r = compile_tree(NCAR(node), reg); - } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); - break; - - case NT_ALT: - { - Node* x = node; - len = 0; - do { - len += compile_length_tree(NCAR(x), reg); - if (NCDR(x) != NULL) { - len += SIZE_OP_PUSH + SIZE_OP_JUMP; - } - } while (IS_NOT_NULL(x = NCDR(x))); - pos = reg->used + len; /* goal position */ - - do { - len = compile_length_tree(NCAR(node), reg); - if (IS_NOT_NULL(NCDR(node))) { - r = add_opcode_rel_addr(reg, OP_PUSH, len + SIZE_OP_JUMP); - if (r) break; - } - r = compile_tree(NCAR(node), reg); - if (r) break; - if (IS_NOT_NULL(NCDR(node))) { - len = pos - (reg->used + SIZE_OP_JUMP); - r = add_opcode_rel_addr(reg, OP_JUMP, len); - if (r) break; - } - } while (IS_NOT_NULL(node = NCDR(node))); - } - break; - - case NT_STR: - if (NSTRING_IS_RAW(node)) - r = compile_string_raw_node(NSTR(node), reg); - else - r = compile_string_node(node, reg); - break; - - case NT_CCLASS: - r = compile_cclass_node(NCCLASS(node), reg); - break; - - case NT_CTYPE: - { - int op; - - switch (NCTYPE(node)->ctype) { - case ONIGENC_CTYPE_WORD: - if (NCTYPE(node)->not != 0) op = OP_NOT_WORD; - else op = OP_WORD; - break; - default: - return ONIGERR_TYPE_BUG; - break; - } - r = add_opcode(reg, op); - } - break; - - case NT_CANY: - if (IS_MULTILINE(reg->options)) - r = add_opcode(reg, OP_ANYCHAR_ML); - else - r = add_opcode(reg, OP_ANYCHAR); - break; - - case NT_BREF: - { - BRefNode* br = NBREF(node); - -#ifdef USE_BACKREF_WITH_LEVEL - if (IS_BACKREF_NEST_LEVEL(br)) { - r = add_opcode(reg, OP_BACKREF_WITH_LEVEL); - if (r) return r; - r = add_option(reg, (reg->options & ONIG_OPTION_IGNORECASE)); - if (r) return r; - r = add_length(reg, br->nest_level); - if (r) return r; - - goto add_bacref_mems; - } - else -#endif - if (br->back_num == 1) { - n = br->back_static[0]; - if (IS_IGNORECASE(reg->options)) { - r = add_opcode(reg, OP_BACKREFN_IC); - if (r) return r; - r = add_mem_num(reg, n); - } - else { - switch (n) { - case 1: r = add_opcode(reg, OP_BACKREF1); break; - case 2: r = add_opcode(reg, OP_BACKREF2); break; - default: - r = add_opcode(reg, OP_BACKREFN); - if (r) return r; - r = add_mem_num(reg, n); - break; - } - } - } - else { - int i; - int* p; - - if (IS_IGNORECASE(reg->options)) { - r = add_opcode(reg, OP_BACKREF_MULTI_IC); - } - else { - r = add_opcode(reg, OP_BACKREF_MULTI); - } - if (r) return r; - -#ifdef USE_BACKREF_WITH_LEVEL - add_bacref_mems: -#endif - r = add_length(reg, br->back_num); - if (r) return r; - p = BACKREFS_P(br); - for (i = br->back_num - 1; i >= 0; i--) { - r = add_mem_num(reg, p[i]); - if (r) return r; - } - } - } - break; - -#ifdef USE_SUBEXP_CALL - case NT_CALL: - r = compile_call(NCALL(node), reg); - break; -#endif - - case NT_QTFR: - r = compile_quantifier_node(NQTFR(node), reg); - break; - - case NT_ENCLOSE: - r = compile_enclose_node(NENCLOSE(node), reg); - break; - - case NT_ANCHOR: - r = compile_anchor_node(NANCHOR(node), reg); - break; - - default: -#ifdef ONIG_DEBUG - fprintf(stderr, "compile_tree: undefined node type %d\n", NTYPE(node)); -#endif - break; - } - - return r; -} - -#ifdef USE_NAMED_GROUP - -static int -noname_disable_map(Node** plink, GroupNumRemap* map, int* counter) -{ - int r = 0; - Node* node = *plink; - - switch (NTYPE(node)) { - case NT_LIST: - case NT_ALT: - do { - r = noname_disable_map(&(NCAR(node)), map, counter); - } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); - break; - - case NT_QTFR: - { - Node** ptarget = &(NQTFR(node)->target); - Node* old = *ptarget; - r = noname_disable_map(ptarget, map, counter); - if (*ptarget != old && NTYPE(*ptarget) == NT_QTFR) { - onig_reduce_nested_quantifier(node, *ptarget); - } - } - break; - - case NT_ENCLOSE: - { - EncloseNode* en = NENCLOSE(node); - if (en->type == ENCLOSE_MEMORY) { - if (IS_ENCLOSE_NAMED_GROUP(en)) { - (*counter)++; - map[en->regnum].new_val = *counter; - en->regnum = *counter; - r = noname_disable_map(&(en->target), map, counter); - } - else { - *plink = en->target; - en->target = NULL_NODE; - onig_node_free(node); - r = noname_disable_map(plink, map, counter); - } - } - else - r = noname_disable_map(&(en->target), map, counter); - } - break; - - default: - break; - } - - return r; -} - -static int -renumber_node_backref(Node* node, GroupNumRemap* map) -{ - int i, pos, n, old_num; - int *backs; - BRefNode* bn = NBREF(node); - - if (! IS_BACKREF_NAME_REF(bn)) - return ONIGERR_NUMBERED_BACKREF_OR_CALL_NOT_ALLOWED; - - old_num = bn->back_num; - if (IS_NULL(bn->back_dynamic)) - backs = bn->back_static; - else - backs = bn->back_dynamic; - - for (i = 0, pos = 0; i < old_num; i++) { - n = map[backs[i]].new_val; - if (n > 0) { - backs[pos] = n; - pos++; - } - } - - bn->back_num = pos; - return 0; -} - -static int -renumber_by_map(Node* node, GroupNumRemap* map) -{ - int r = 0; - - switch (NTYPE(node)) { - case NT_LIST: - case NT_ALT: - do { - r = renumber_by_map(NCAR(node), map); - } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); - break; - case NT_QTFR: - r = renumber_by_map(NQTFR(node)->target, map); - break; - case NT_ENCLOSE: - r = renumber_by_map(NENCLOSE(node)->target, map); - break; - - case NT_BREF: - r = renumber_node_backref(node, map); - break; - - default: - break; - } - - return r; -} - -static int -numbered_ref_check(Node* node) -{ - int r = 0; - - switch (NTYPE(node)) { - case NT_LIST: - case NT_ALT: - do { - r = numbered_ref_check(NCAR(node)); - } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); - break; - case NT_QTFR: - r = numbered_ref_check(NQTFR(node)->target); - break; - case NT_ENCLOSE: - r = numbered_ref_check(NENCLOSE(node)->target); - break; - - case NT_BREF: - if (! IS_BACKREF_NAME_REF(NBREF(node))) - return ONIGERR_NUMBERED_BACKREF_OR_CALL_NOT_ALLOWED; - break; - - default: - break; - } - - return r; -} - -static int -disable_noname_group_capture(Node** root, regex_t* reg, ScanEnv* env) -{ - int r, i, pos, counter; - BitStatusType loc; - GroupNumRemap* map; - - map = (GroupNumRemap* )xalloca(sizeof(GroupNumRemap) * (env->num_mem + 1)); - CHECK_NULL_RETURN_MEMERR(map); - for (i = 1; i <= env->num_mem; i++) { - map[i].new_val = 0; - } - counter = 0; - r = noname_disable_map(root, map, &counter); - if (r != 0) return r; - - r = renumber_by_map(*root, map); - if (r != 0) return r; - - for (i = 1, pos = 1; i <= env->num_mem; i++) { - if (map[i].new_val > 0) { - SCANENV_MEM_NODES(env)[pos] = SCANENV_MEM_NODES(env)[i]; - pos++; - } - } - - loc = env->capture_history; - BIT_STATUS_CLEAR(env->capture_history); - for (i = 1; i <= ONIG_MAX_CAPTURE_HISTORY_GROUP; i++) { - if (BIT_STATUS_AT(loc, i)) { - BIT_STATUS_ON_AT_SIMPLE(env->capture_history, map[i].new_val); - } - } - - env->num_mem = env->num_named; - reg->num_mem = env->num_named; - - return onig_renumber_name_table(reg, map); -} -#endif /* USE_NAMED_GROUP */ - -#ifdef USE_SUBEXP_CALL -static int -unset_addr_list_fix(UnsetAddrList* uslist, regex_t* reg) -{ - int i, offset; - EncloseNode* en; - AbsAddrType addr; - - for (i = 0; i < uslist->num; i++) { - en = NENCLOSE(uslist->us[i].target); - if (! IS_ENCLOSE_ADDR_FIXED(en)) return ONIGERR_PARSER_BUG; - addr = en->call_addr; - offset = uslist->us[i].offset; - - BBUF_WRITE(reg, offset, &addr, SIZE_ABSADDR); - } - return 0; -} -#endif - -#ifdef USE_MONOMANIAC_CHECK_CAPTURES_IN_ENDLESS_REPEAT -static int -quantifiers_memory_node_info(Node* node) -{ - int r = 0; - - switch (NTYPE(node)) { - case NT_LIST: - case NT_ALT: - { - int v; - do { - v = quantifiers_memory_node_info(NCAR(node)); - if (v > r) r = v; - } while (v >= 0 && IS_NOT_NULL(node = NCDR(node))); - } - break; - -#ifdef USE_SUBEXP_CALL - case NT_CALL: - if (IS_CALL_RECURSION(NCALL(node))) { - return NQ_TARGET_IS_EMPTY_REC; /* tiny version */ - } - else - r = quantifiers_memory_node_info(NCALL(node)->target); - break; -#endif - - case NT_QTFR: - { - QtfrNode* qn = NQTFR(node); - if (qn->upper != 0) { - r = quantifiers_memory_node_info(qn->target); - } - } - break; - - case NT_ENCLOSE: - { - EncloseNode* en = NENCLOSE(node); - switch (en->type) { - case ENCLOSE_MEMORY: - return NQ_TARGET_IS_EMPTY_MEM; - break; - - case ENCLOSE_OPTION: - case ENCLOSE_STOP_BACKTRACK: - r = quantifiers_memory_node_info(en->target); - break; - default: - break; - } - } - break; - - case NT_BREF: - case NT_STR: - case NT_CTYPE: - case NT_CCLASS: - case NT_CANY: - case NT_ANCHOR: - default: - break; - } - - return r; -} -#endif /* USE_MONOMANIAC_CHECK_CAPTURES_IN_ENDLESS_REPEAT */ - -static int -get_min_match_length(Node* node, OnigDistance *min, ScanEnv* env) -{ - OnigDistance tmin; - int r = 0; - - *min = 0; - switch (NTYPE(node)) { - case NT_BREF: - { - int i; - int* backs; - Node** nodes = SCANENV_MEM_NODES(env); - BRefNode* br = NBREF(node); - if (br->state & NST_RECURSION) break; - - backs = BACKREFS_P(br); - if (backs[0] > env->num_mem) return ONIGERR_INVALID_BACKREF; - r = get_min_match_length(nodes[backs[0]], min, env); - if (r != 0) break; - for (i = 1; i < br->back_num; i++) { - if (backs[i] > env->num_mem) return ONIGERR_INVALID_BACKREF; - r = get_min_match_length(nodes[backs[i]], &tmin, env); - if (r != 0) break; - if (*min > tmin) *min = tmin; - } - } - break; - -#ifdef USE_SUBEXP_CALL - case NT_CALL: - if (IS_CALL_RECURSION(NCALL(node))) { - EncloseNode* en = NENCLOSE(NCALL(node)->target); - if (IS_ENCLOSE_MIN_FIXED(en)) - *min = en->min_len; - } - else - r = get_min_match_length(NCALL(node)->target, min, env); - break; -#endif - - case NT_LIST: - do { - r = get_min_match_length(NCAR(node), &tmin, env); - if (r == 0) *min += tmin; - } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); - break; - - case NT_ALT: - { - Node *x, *y; - y = node; - do { - x = NCAR(y); - r = get_min_match_length(x, &tmin, env); - if (r != 0) break; - if (y == node) *min = tmin; - else if (*min > tmin) *min = tmin; - } while (r == 0 && IS_NOT_NULL(y = NCDR(y))); - } - break; - - case NT_STR: - { - StrNode* sn = NSTR(node); - *min = sn->end - sn->s; - } - break; - - case NT_CTYPE: - *min = 1; - break; - - case NT_CCLASS: - case NT_CANY: - *min = 1; - break; - - case NT_QTFR: - { - QtfrNode* qn = NQTFR(node); - - if (qn->lower > 0) { - r = get_min_match_length(qn->target, min, env); - if (r == 0) - *min = distance_multiply(*min, qn->lower); - } - } - break; - - case NT_ENCLOSE: - { - EncloseNode* en = NENCLOSE(node); - switch (en->type) { - case ENCLOSE_MEMORY: -#ifdef USE_SUBEXP_CALL - if (IS_ENCLOSE_MIN_FIXED(en)) - *min = en->min_len; - else { - r = get_min_match_length(en->target, min, env); - if (r == 0) { - en->min_len = *min; - SET_ENCLOSE_STATUS(node, NST_MIN_FIXED); - } - } - break; -#endif - case ENCLOSE_OPTION: - case ENCLOSE_STOP_BACKTRACK: - r = get_min_match_length(en->target, min, env); - break; - } - } - break; - - case NT_ANCHOR: - default: - break; - } - - return r; -} - -static int -get_max_match_length(Node* node, OnigDistance *max, ScanEnv* env) -{ - OnigDistance tmax; - int r = 0; - - *max = 0; - switch (NTYPE(node)) { - case NT_LIST: - do { - r = get_max_match_length(NCAR(node), &tmax, env); - if (r == 0) - *max = distance_add(*max, tmax); - } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); - break; - - case NT_ALT: - do { - r = get_max_match_length(NCAR(node), &tmax, env); - if (r == 0 && *max < tmax) *max = tmax; - } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); - break; - - case NT_STR: - { - StrNode* sn = NSTR(node); - *max = sn->end - sn->s; - } - break; - - case NT_CTYPE: - *max = ONIGENC_MBC_MAXLEN_DIST(env->enc); - break; - - case NT_CCLASS: - case NT_CANY: - *max = ONIGENC_MBC_MAXLEN_DIST(env->enc); - break; - - case NT_BREF: - { - int i; - int* backs; - Node** nodes = SCANENV_MEM_NODES(env); - BRefNode* br = NBREF(node); - if (br->state & NST_RECURSION) { - *max = ONIG_INFINITE_DISTANCE; - break; - } - backs = BACKREFS_P(br); - for (i = 0; i < br->back_num; i++) { - if (backs[i] > env->num_mem) return ONIGERR_INVALID_BACKREF; - r = get_max_match_length(nodes[backs[i]], &tmax, env); - if (r != 0) break; - if (*max < tmax) *max = tmax; - } - } - break; - -#ifdef USE_SUBEXP_CALL - case NT_CALL: - if (! IS_CALL_RECURSION(NCALL(node))) - r = get_max_match_length(NCALL(node)->target, max, env); - else - *max = ONIG_INFINITE_DISTANCE; - break; -#endif - - case NT_QTFR: - { - QtfrNode* qn = NQTFR(node); - - if (qn->upper != 0) { - r = get_max_match_length(qn->target, max, env); - if (r == 0 && *max != 0) { - if (! IS_REPEAT_INFINITE(qn->upper)) - *max = distance_multiply(*max, qn->upper); - else - *max = ONIG_INFINITE_DISTANCE; - } - } - } - break; - - case NT_ENCLOSE: - { - EncloseNode* en = NENCLOSE(node); - switch (en->type) { - case ENCLOSE_MEMORY: -#ifdef USE_SUBEXP_CALL - if (IS_ENCLOSE_MAX_FIXED(en)) - *max = en->max_len; - else { - r = get_max_match_length(en->target, max, env); - if (r == 0) { - en->max_len = *max; - SET_ENCLOSE_STATUS(node, NST_MAX_FIXED); - } - } - break; -#endif - case ENCLOSE_OPTION: - case ENCLOSE_STOP_BACKTRACK: - r = get_max_match_length(en->target, max, env); - break; - } - } - break; - - case NT_ANCHOR: - default: - break; - } - - return r; -} - -#define GET_CHAR_LEN_VARLEN -1 -#define GET_CHAR_LEN_TOP_ALT_VARLEN -2 - -/* fixed size pattern node only */ -static int -get_char_length_tree1(Node* node, regex_t* reg, int* len, int level) -{ - int tlen; - int r = 0; - - level++; - *len = 0; - switch (NTYPE(node)) { - case NT_LIST: - do { - r = get_char_length_tree1(NCAR(node), reg, &tlen, level); - if (r == 0) - *len = distance_add(*len, tlen); - } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); - break; - - case NT_ALT: - { - int tlen2; - int varlen = 0; - - r = get_char_length_tree1(NCAR(node), reg, &tlen, level); - while (r == 0 && IS_NOT_NULL(node = NCDR(node))) { - r = get_char_length_tree1(NCAR(node), reg, &tlen2, level); - if (r == 0) { - if (tlen != tlen2) - varlen = 1; - } - } - if (r == 0) { - if (varlen != 0) { - if (level == 1) - r = GET_CHAR_LEN_TOP_ALT_VARLEN; - else - r = GET_CHAR_LEN_VARLEN; - } - else - *len = tlen; - } - } - break; - - case NT_STR: - { - StrNode* sn = NSTR(node); - UChar *s = sn->s; - while (s < sn->end) { - s += enclen(reg->enc, s, sn->end); - (*len)++; - } - } - break; - - case NT_QTFR: - { - QtfrNode* qn = NQTFR(node); - if (qn->lower == qn->upper) { - r = get_char_length_tree1(qn->target, reg, &tlen, level); - if (r == 0) - *len = distance_multiply(tlen, qn->lower); - } - else - r = GET_CHAR_LEN_VARLEN; - } - break; - -#ifdef USE_SUBEXP_CALL - case NT_CALL: - if (! IS_CALL_RECURSION(NCALL(node))) - r = get_char_length_tree1(NCALL(node)->target, reg, len, level); - else - r = GET_CHAR_LEN_VARLEN; - break; -#endif - - case NT_CTYPE: - *len = 1; - break; - - case NT_CCLASS: - case NT_CANY: - *len = 1; - break; - - case NT_ENCLOSE: - { - EncloseNode* en = NENCLOSE(node); - switch (en->type) { - case ENCLOSE_MEMORY: -#ifdef USE_SUBEXP_CALL - if (IS_ENCLOSE_CLEN_FIXED(en)) - *len = en->char_len; - else { - r = get_char_length_tree1(en->target, reg, len, level); - if (r == 0) { - en->char_len = *len; - SET_ENCLOSE_STATUS(node, NST_CLEN_FIXED); - } - } - break; -#endif - case ENCLOSE_OPTION: - case ENCLOSE_STOP_BACKTRACK: - r = get_char_length_tree1(en->target, reg, len, level); - break; - default: - break; - } - } - break; - - case NT_ANCHOR: - break; - - default: - r = GET_CHAR_LEN_VARLEN; - break; - } - - return r; -} - -static int -get_char_length_tree(Node* node, regex_t* reg, int* len) -{ - return get_char_length_tree1(node, reg, len, 0); -} - -/* x is not included y ==> 1 : 0 */ -static int -is_not_included(Node* x, Node* y, regex_t* reg) -{ - int i, len; - OnigCodePoint code; - UChar *p, c; - int ytype; - - retry: - ytype = NTYPE(y); - switch (NTYPE(x)) { - case NT_CTYPE: - { - switch (ytype) { - case NT_CTYPE: - if (NCTYPE(y)->ctype == NCTYPE(x)->ctype && - NCTYPE(y)->not != NCTYPE(x)->not) - return 1; - else - return 0; - break; - - case NT_CCLASS: - swap: - { - Node* tmp; - tmp = x; x = y; y = tmp; - goto retry; - } - break; - - case NT_STR: - goto swap; - break; - - default: - break; - } - } - break; - - case NT_CCLASS: - { - CClassNode* xc = NCCLASS(x); - switch (ytype) { - case NT_CTYPE: - switch (NCTYPE(y)->ctype) { - case ONIGENC_CTYPE_WORD: - if (NCTYPE(y)->not == 0) { - if (IS_NULL(xc->mbuf) && !IS_NCCLASS_NOT(xc)) { - for (i = 0; i < SINGLE_BYTE_SIZE; i++) { - if (BITSET_AT(xc->bs, i)) { - if (IS_CODE_SB_WORD(reg->enc, i)) return 0; - } - } - return 1; - } - return 0; - } - else { - for (i = 0; i < SINGLE_BYTE_SIZE; i++) { - if (! IS_CODE_SB_WORD(reg->enc, i)) { - if (!IS_NCCLASS_NOT(xc)) { - if (BITSET_AT(xc->bs, i)) - return 0; - } - else { - if (! BITSET_AT(xc->bs, i)) - return 0; - } - } - } - return 1; - } - break; - - default: - break; - } - break; - - case NT_CCLASS: - { - int v; - CClassNode* yc = NCCLASS(y); - - for (i = 0; i < SINGLE_BYTE_SIZE; i++) { - v = BITSET_AT(xc->bs, i); - if ((v != 0 && !IS_NCCLASS_NOT(xc)) || - (v == 0 && IS_NCCLASS_NOT(xc))) { - v = BITSET_AT(yc->bs, i); - if ((v != 0 && !IS_NCCLASS_NOT(yc)) || - (v == 0 && IS_NCCLASS_NOT(yc))) - return 0; - } - } - if ((IS_NULL(xc->mbuf) && !IS_NCCLASS_NOT(xc)) || - (IS_NULL(yc->mbuf) && !IS_NCCLASS_NOT(yc))) - return 1; - return 0; - } - break; - - case NT_STR: - goto swap; - break; - - default: - break; - } - } - break; - - case NT_STR: - { - StrNode* xs = NSTR(x); - if (NSTRING_LEN(x) == 0) - break; - - c = *(xs->s); - switch (ytype) { - case NT_CTYPE: - switch (NCTYPE(y)->ctype) { - case ONIGENC_CTYPE_WORD: - if (ONIGENC_IS_MBC_WORD(reg->enc, xs->s, xs->end)) - return NCTYPE(y)->not; - else - return !(NCTYPE(y)->not); - break; - default: - break; - } - break; - - case NT_CCLASS: - { - CClassNode* cc = NCCLASS(y); - - code = ONIGENC_MBC_TO_CODE(reg->enc, xs->s, - xs->s + ONIGENC_MBC_MAXLEN(reg->enc)); - return (onig_is_code_in_cc(reg->enc, code, cc) != 0 ? 0 : 1); - } - break; - - case NT_STR: - { - UChar *q; - StrNode* ys = NSTR(y); - len = NSTRING_LEN(x); - if (len > NSTRING_LEN(y)) len = NSTRING_LEN(y); - if (NSTRING_IS_AMBIG(x) || NSTRING_IS_AMBIG(y)) { - /* tiny version */ - return 0; - } - else { - for (i = 0, p = ys->s, q = xs->s; i < len; i++, p++, q++) { - if (*p != *q) return 1; - } - } - } - break; - - default: - break; - } - } - break; - - default: - break; - } - - return 0; -} - -static Node* -get_head_value_node(Node* node, int exact, regex_t* reg) -{ - Node* n = NULL_NODE; - - switch (NTYPE(node)) { - case NT_BREF: - case NT_ALT: - case NT_CANY: -#ifdef USE_SUBEXP_CALL - case NT_CALL: -#endif - break; - - case NT_CTYPE: - case NT_CCLASS: - if (exact == 0) { - n = node; - } - break; - - case NT_LIST: - n = get_head_value_node(NCAR(node), exact, reg); - break; - - case NT_STR: - { - StrNode* sn = NSTR(node); - - if (sn->end <= sn->s) - break; - - if (exact != 0 && - !NSTRING_IS_RAW(node) && IS_IGNORECASE(reg->options)) { - } - else { - n = node; - } - } - break; - - case NT_QTFR: - { - QtfrNode* qn = NQTFR(node); - if (qn->lower > 0) { - if (IS_NOT_NULL(qn->head_exact)) - n = qn->head_exact; - else - n = get_head_value_node(qn->target, exact, reg); - } - } - break; - - case NT_ENCLOSE: - { - EncloseNode* en = NENCLOSE(node); - switch (en->type) { - case ENCLOSE_OPTION: - { - OnigOptionType options = reg->options; - - reg->options = NENCLOSE(node)->option; - n = get_head_value_node(NENCLOSE(node)->target, exact, reg); - reg->options = options; - } - break; - - case ENCLOSE_MEMORY: - case ENCLOSE_STOP_BACKTRACK: - n = get_head_value_node(en->target, exact, reg); - break; - } - } - break; - - case NT_ANCHOR: - if (NANCHOR(node)->type == ANCHOR_PREC_READ) - n = get_head_value_node(NANCHOR(node)->target, exact, reg); - break; - - default: - break; - } - - return n; -} - -static int -check_type_tree(Node* node, int type_mask, int enclose_mask, int anchor_mask) -{ - int type, r = 0; - - type = NTYPE(node); - if ((NTYPE2BIT(type) & type_mask) == 0) - return 1; - - switch (type) { - case NT_LIST: - case NT_ALT: - do { - r = check_type_tree(NCAR(node), type_mask, enclose_mask, - anchor_mask); - } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); - break; - - case NT_QTFR: - r = check_type_tree(NQTFR(node)->target, type_mask, enclose_mask, - anchor_mask); - break; - - case NT_ENCLOSE: - { - EncloseNode* en = NENCLOSE(node); - if ((en->type & enclose_mask) == 0) - return 1; - - r = check_type_tree(en->target, type_mask, enclose_mask, anchor_mask); - } - break; - - case NT_ANCHOR: - type = NANCHOR(node)->type; - if ((type & anchor_mask) == 0) - return 1; - - if (NANCHOR(node)->target) - r = check_type_tree(NANCHOR(node)->target, - type_mask, enclose_mask, anchor_mask); - break; - - default: - break; - } - return r; -} - -#ifdef USE_SUBEXP_CALL - -#define RECURSION_EXIST 1 -#define RECURSION_INFINITE 2 - -static int -subexp_inf_recursive_check(Node* node, ScanEnv* env, int head) -{ - int type; - int r = 0; - - type = NTYPE(node); - switch (type) { - case NT_LIST: - { - Node *x; - OnigDistance min; - int ret; - - x = node; - do { - ret = subexp_inf_recursive_check(NCAR(x), env, head); - if (ret < 0 || ret == RECURSION_INFINITE) return ret; - r |= ret; - if (head) { - ret = get_min_match_length(NCAR(x), &min, env); - if (ret != 0) return ret; - if (min != 0) head = 0; - } - } while (IS_NOT_NULL(x = NCDR(x))); - } - break; - - case NT_ALT: - { - int ret; - r = RECURSION_EXIST; - do { - ret = subexp_inf_recursive_check(NCAR(node), env, head); - if (ret < 0 || ret == RECURSION_INFINITE) return ret; - r &= ret; - } while (IS_NOT_NULL(node = NCDR(node))); - } - break; - - case NT_QTFR: - r = subexp_inf_recursive_check(NQTFR(node)->target, env, head); - if (r == RECURSION_EXIST) { - if (NQTFR(node)->lower == 0) r = 0; - } - break; - - case NT_ANCHOR: - { - AnchorNode* an = NANCHOR(node); - switch (an->type) { - case ANCHOR_PREC_READ: - case ANCHOR_PREC_READ_NOT: - case ANCHOR_LOOK_BEHIND: - case ANCHOR_LOOK_BEHIND_NOT: - r = subexp_inf_recursive_check(an->target, env, head); - break; - } - } - break; - - case NT_CALL: - r = subexp_inf_recursive_check(NCALL(node)->target, env, head); - break; - - case NT_ENCLOSE: - if (IS_ENCLOSE_MARK2(NENCLOSE(node))) - return 0; - else if (IS_ENCLOSE_MARK1(NENCLOSE(node))) - return (head == 0 ? RECURSION_EXIST : RECURSION_INFINITE); - else { - SET_ENCLOSE_STATUS(node, NST_MARK2); - r = subexp_inf_recursive_check(NENCLOSE(node)->target, env, head); - CLEAR_ENCLOSE_STATUS(node, NST_MARK2); - } - break; - - default: - break; - } - - return r; -} - -static int -subexp_inf_recursive_check_trav(Node* node, ScanEnv* env) -{ - int type; - int r = 0; - - type = NTYPE(node); - switch (type) { - case NT_LIST: - case NT_ALT: - do { - r = subexp_inf_recursive_check_trav(NCAR(node), env); - } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); - break; - - case NT_QTFR: - r = subexp_inf_recursive_check_trav(NQTFR(node)->target, env); - break; - - case NT_ANCHOR: - { - AnchorNode* an = NANCHOR(node); - switch (an->type) { - case ANCHOR_PREC_READ: - case ANCHOR_PREC_READ_NOT: - case ANCHOR_LOOK_BEHIND: - case ANCHOR_LOOK_BEHIND_NOT: - r = subexp_inf_recursive_check_trav(an->target, env); - break; - } - } - break; - - case NT_ENCLOSE: - { - EncloseNode* en = NENCLOSE(node); - - if (IS_ENCLOSE_RECURSION(en)) { - SET_ENCLOSE_STATUS(node, NST_MARK1); - r = subexp_inf_recursive_check(en->target, env, 1); - if (r > 0) return ONIGERR_NEVER_ENDING_RECURSION; - CLEAR_ENCLOSE_STATUS(node, NST_MARK1); - } - r = subexp_inf_recursive_check_trav(en->target, env); - } - - break; - - default: - break; - } - - return r; -} - -static int -subexp_recursive_check(Node* node) -{ - int r = 0; - - switch (NTYPE(node)) { - case NT_LIST: - case NT_ALT: - do { - r |= subexp_recursive_check(NCAR(node)); - } while (IS_NOT_NULL(node = NCDR(node))); - break; - - case NT_QTFR: - r = subexp_recursive_check(NQTFR(node)->target); - break; - - case NT_ANCHOR: - { - AnchorNode* an = NANCHOR(node); - switch (an->type) { - case ANCHOR_PREC_READ: - case ANCHOR_PREC_READ_NOT: - case ANCHOR_LOOK_BEHIND: - case ANCHOR_LOOK_BEHIND_NOT: - r = subexp_recursive_check(an->target); - break; - } - } - break; - - case NT_CALL: - r = subexp_recursive_check(NCALL(node)->target); - if (r != 0) SET_CALL_RECURSION(node); - break; - - case NT_ENCLOSE: - if (IS_ENCLOSE_MARK2(NENCLOSE(node))) - return 0; - else if (IS_ENCLOSE_MARK1(NENCLOSE(node))) - return 1; /* recursion */ - else { - SET_ENCLOSE_STATUS(node, NST_MARK2); - r = subexp_recursive_check(NENCLOSE(node)->target); - CLEAR_ENCLOSE_STATUS(node, NST_MARK2); - } - break; - - default: - break; - } - - return r; -} - - -static int -subexp_recursive_check_trav(Node* node, ScanEnv* env) -{ -#define FOUND_CALLED_NODE 1 - - int type; - int r = 0; - - type = NTYPE(node); - switch (type) { - case NT_LIST: - case NT_ALT: - { - int ret; - do { - ret = subexp_recursive_check_trav(NCAR(node), env); - if (ret == FOUND_CALLED_NODE) r = FOUND_CALLED_NODE; - else if (ret < 0) return ret; - } while (IS_NOT_NULL(node = NCDR(node))); - } - break; - - case NT_QTFR: - r = subexp_recursive_check_trav(NQTFR(node)->target, env); - if (NQTFR(node)->upper == 0) { - if (r == FOUND_CALLED_NODE) - NQTFR(node)->is_refered = 1; - } - break; - - case NT_ANCHOR: - { - AnchorNode* an = NANCHOR(node); - switch (an->type) { - case ANCHOR_PREC_READ: - case ANCHOR_PREC_READ_NOT: - case ANCHOR_LOOK_BEHIND: - case ANCHOR_LOOK_BEHIND_NOT: - r = subexp_recursive_check_trav(an->target, env); - break; - } - } - break; - - case NT_ENCLOSE: - { - EncloseNode* en = NENCLOSE(node); - - if (! IS_ENCLOSE_RECURSION(en)) { - if (IS_ENCLOSE_CALLED(en)) { - SET_ENCLOSE_STATUS(node, NST_MARK1); - r = subexp_recursive_check(en->target); - if (r != 0) SET_ENCLOSE_STATUS(node, NST_RECURSION); - CLEAR_ENCLOSE_STATUS(node, NST_MARK1); - } - } - r = subexp_recursive_check_trav(en->target, env); - if (IS_ENCLOSE_CALLED(en)) - r |= FOUND_CALLED_NODE; - } - break; - - default: - break; - } - - return r; -} - -static int -setup_subexp_call(Node* node, ScanEnv* env) -{ - int type; - int r = 0; - - type = NTYPE(node); - switch (type) { - case NT_LIST: - do { - r = setup_subexp_call(NCAR(node), env); - } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); - break; - - case NT_ALT: - do { - r = setup_subexp_call(NCAR(node), env); - } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); - break; - - case NT_QTFR: - r = setup_subexp_call(NQTFR(node)->target, env); - break; - case NT_ENCLOSE: - r = setup_subexp_call(NENCLOSE(node)->target, env); - break; - - case NT_CALL: - { - CallNode* cn = NCALL(node); - Node** nodes = SCANENV_MEM_NODES(env); - - if (cn->group_num != 0) { - int gnum = cn->group_num; - -#ifdef USE_NAMED_GROUP - if (env->num_named > 0 && - IS_SYNTAX_BV(env->syntax, ONIG_SYN_CAPTURE_ONLY_NAMED_GROUP) && - !ONIG_IS_OPTION_ON(env->option, ONIG_OPTION_CAPTURE_GROUP)) { - return ONIGERR_NUMBERED_BACKREF_OR_CALL_NOT_ALLOWED; - } -#endif - if (gnum > env->num_mem) { - onig_scan_env_set_error_string(env, - ONIGERR_UNDEFINED_GROUP_REFERENCE, cn->name, cn->name_end); - return ONIGERR_UNDEFINED_GROUP_REFERENCE; - } - -#ifdef USE_NAMED_GROUP - set_call_attr: -#endif - cn->target = nodes[cn->group_num]; - if (IS_NULL(cn->target)) { - onig_scan_env_set_error_string(env, - ONIGERR_UNDEFINED_NAME_REFERENCE, cn->name, cn->name_end); - return ONIGERR_UNDEFINED_NAME_REFERENCE; - } - SET_ENCLOSE_STATUS(cn->target, NST_CALLED); - BIT_STATUS_ON_AT(env->bt_mem_start, cn->group_num); - cn->unset_addr_list = env->unset_addr_list; - } -#ifdef USE_NAMED_GROUP - else { - int *refs; - - int n = onig_name_to_group_numbers(env->reg, cn->name, cn->name_end, - &refs); - if (n <= 0) { - onig_scan_env_set_error_string(env, - ONIGERR_UNDEFINED_NAME_REFERENCE, cn->name, cn->name_end); - return ONIGERR_UNDEFINED_NAME_REFERENCE; - } - else if (n > 1) { - onig_scan_env_set_error_string(env, - ONIGERR_MULTIPLEX_DEFINITION_NAME_CALL, cn->name, cn->name_end); - return ONIGERR_MULTIPLEX_DEFINITION_NAME_CALL; - } - else { - cn->group_num = refs[0]; - goto set_call_attr; - } - } -#endif - } - break; - - case NT_ANCHOR: - { - AnchorNode* an = NANCHOR(node); - - switch (an->type) { - case ANCHOR_PREC_READ: - case ANCHOR_PREC_READ_NOT: - case ANCHOR_LOOK_BEHIND: - case ANCHOR_LOOK_BEHIND_NOT: - r = setup_subexp_call(an->target, env); - break; - } - } - break; - - default: - break; - } - - return r; -} -#endif - -/* divide different length alternatives in look-behind. - (?<=A|B) ==> (?<=A)|(?<=B) - (?<!A|B) ==> (?<!A)(?<!B) -*/ -static int -divide_look_behind_alternatives(Node* node) -{ - Node *head, *np, *insert_node; - AnchorNode* an = NANCHOR(node); - int anc_type = an->type; - - head = an->target; - np = NCAR(head); - swap_node(node, head); - NCAR(node) = head; - NANCHOR(head)->target = np; - - np = node; - while ((np = NCDR(np)) != NULL_NODE) { - insert_node = onig_node_new_anchor(anc_type); - CHECK_NULL_RETURN_MEMERR(insert_node); - NANCHOR(insert_node)->target = NCAR(np); - NCAR(np) = insert_node; - } - - if (anc_type == ANCHOR_LOOK_BEHIND_NOT) { - np = node; - do { - SET_NTYPE(np, NT_LIST); /* alt -> list */ - } while ((np = NCDR(np)) != NULL_NODE); - } - return 0; -} - -static int -setup_look_behind(Node* node, regex_t* reg, ScanEnv* env) -{ - int r, len; - AnchorNode* an = NANCHOR(node); - - r = get_char_length_tree(an->target, reg, &len); - if (r == 0) - an->char_len = len; - else if (r == GET_CHAR_LEN_VARLEN) - r = ONIGERR_INVALID_LOOK_BEHIND_PATTERN; - else if (r == GET_CHAR_LEN_TOP_ALT_VARLEN) { - if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_DIFFERENT_LEN_ALT_LOOK_BEHIND)) - r = divide_look_behind_alternatives(node); - else - r = ONIGERR_INVALID_LOOK_BEHIND_PATTERN; - } - - return r; -} - -static int -next_setup(Node* node, Node* next_node, regex_t* reg) -{ - int type; - - retry: - type = NTYPE(node); - if (type == NT_QTFR) { - QtfrNode* qn = NQTFR(node); - if (qn->greedy && IS_REPEAT_INFINITE(qn->upper)) { -#ifdef USE_QTFR_PEEK_NEXT - Node* n = get_head_value_node(next_node, 1, reg); - /* '\0': for UTF-16BE etc... */ - if (IS_NOT_NULL(n) && NSTR(n)->s[0] != '\0') { - qn->next_head_exact = n; - } -#endif - /* automatic posseivation a*b ==> (?>a*)b */ - if (qn->lower <= 1) { - int ttype = NTYPE(qn->target); - if (IS_NODE_TYPE_SIMPLE(ttype)) { - Node *x, *y; - x = get_head_value_node(qn->target, 0, reg); - if (IS_NOT_NULL(x)) { - y = get_head_value_node(next_node, 0, reg); - if (IS_NOT_NULL(y) && is_not_included(x, y, reg)) { - Node* en = onig_node_new_enclose(ENCLOSE_STOP_BACKTRACK); - CHECK_NULL_RETURN_MEMERR(en); - SET_ENCLOSE_STATUS(en, NST_STOP_BT_SIMPLE_REPEAT); - swap_node(node, en); - NENCLOSE(node)->target = en; - } - } - } - } - } - } - else if (type == NT_ENCLOSE) { - EncloseNode* en = NENCLOSE(node); - if (en->type == ENCLOSE_MEMORY) { - node = en->target; - goto retry; - } - } - return 0; -} - - -static int -update_string_node_case_fold(regex_t* reg, Node *node) -{ - UChar *p, *q, *end, buf[ONIGENC_MBC_CASE_FOLD_MAXLEN]; - UChar *sbuf, *ebuf, *sp; - int r, i, len, sbuf_size; - StrNode* sn = NSTR(node); - - end = sn->end; - sbuf_size = (end - sn->s) * 2; - sbuf = (UChar* )xmalloc(sbuf_size); - CHECK_NULL_RETURN_MEMERR(sbuf); - ebuf = sbuf + sbuf_size; - - sp = sbuf; - p = sn->s; - while (p < end) { - len = ONIGENC_MBC_CASE_FOLD(reg->enc, reg->case_fold_flag, &p, end, buf); - q = buf; - for (i = 0; i < len; i++) { - if (sp >= ebuf) { - sbuf = (UChar* )xrealloc(sbuf, sbuf_size * 2); - CHECK_NULL_RETURN_MEMERR(sbuf); - sp = sbuf + sbuf_size; - sbuf_size *= 2; - ebuf = sbuf + sbuf_size; - } - - *sp++ = buf[i]; - } - } - - r = onig_node_str_set(node, sbuf, sp); - if (r != 0) { - xfree(sbuf); - return r; - } - - xfree(sbuf); - return 0; -} - -static int -expand_case_fold_make_rem_string(Node** rnode, UChar *s, UChar *end, - regex_t* reg) -{ - int r; - Node *node; - - node = onig_node_new_str(s, end); - if (IS_NULL(node)) return ONIGERR_MEMORY; - - r = update_string_node_case_fold(reg, node); - if (r != 0) { - onig_node_free(node); - return r; - } - - NSTRING_SET_AMBIG(node); - NSTRING_SET_DONT_GET_OPT_INFO(node); - *rnode = node; - return 0; -} - -static int -expand_case_fold_string_alt(int item_num, OnigCaseFoldCodeItem items[], - UChar *p, int slen, UChar *end, - regex_t* reg, Node **rnode) -{ - int r, i, j, len, varlen; - Node *anode, *var_anode, *snode, *xnode, *an; - UChar buf[ONIGENC_CODE_TO_MBC_MAXLEN]; - - *rnode = var_anode = NULL_NODE; - - varlen = 0; - for (i = 0; i < item_num; i++) { - if (items[i].byte_len != slen) { - varlen = 1; - break; - } - } - - if (varlen != 0) { - *rnode = var_anode = onig_node_new_alt(NULL_NODE, NULL_NODE); - if (IS_NULL(var_anode)) return ONIGERR_MEMORY; - - xnode = onig_node_new_list(NULL, NULL); - if (IS_NULL(xnode)) goto mem_err; - NCAR(var_anode) = xnode; - - anode = onig_node_new_alt(NULL_NODE, NULL_NODE); - if (IS_NULL(anode)) goto mem_err; - NCAR(xnode) = anode; - } - else { - *rnode = anode = onig_node_new_alt(NULL_NODE, NULL_NODE); - if (IS_NULL(anode)) return ONIGERR_MEMORY; - } - - snode = onig_node_new_str(p, p + slen); - if (IS_NULL(snode)) goto mem_err; - - NCAR(anode) = snode; - - for (i = 0; i < item_num; i++) { - snode = onig_node_new_str(NULL, NULL); - if (IS_NULL(snode)) goto mem_err; - - for (j = 0; j < items[i].code_len; j++) { - len = ONIGENC_CODE_TO_MBC(reg->enc, items[i].code[j], buf); - if (len < 0) { - r = len; - goto mem_err2; - } - - r = onig_node_str_cat(snode, buf, buf + len); - if (r != 0) goto mem_err2; - } - - an = onig_node_new_alt(NULL_NODE, NULL_NODE); - if (IS_NULL(an)) { - goto mem_err2; - } - - if (items[i].byte_len != slen) { - Node *rem; - UChar *q = p + items[i].byte_len; - - if (q < end) { - r = expand_case_fold_make_rem_string(&rem, q, end, reg); - if (r != 0) { - onig_node_free(an); - goto mem_err2; - } - - xnode = onig_node_list_add(NULL_NODE, snode); - if (IS_NULL(xnode)) { - onig_node_free(an); - onig_node_free(rem); - goto mem_err2; - } - if (IS_NULL(onig_node_list_add(xnode, rem))) { - onig_node_free(an); - onig_node_free(xnode); - onig_node_free(rem); - goto mem_err; - } - - NCAR(an) = xnode; - } - else { - NCAR(an) = snode; - } - - NCDR(var_anode) = an; - var_anode = an; - } - else { - NCAR(an) = snode; - NCDR(anode) = an; - anode = an; - } - } - - return varlen; - - mem_err2: - onig_node_free(snode); - - mem_err: - onig_node_free(*rnode); - - return ONIGERR_MEMORY; -} - -static int -expand_case_fold_string(Node* node, regex_t* reg) -{ -#define THRESHOLD_CASE_FOLD_ALT_FOR_EXPANSION 8 - - int r, n, len, alt_num; - UChar *start, *end, *p; - Node *top_root, *root, *snode, *prev_node; - OnigCaseFoldCodeItem items[ONIGENC_GET_CASE_FOLD_CODES_MAX_NUM]; - StrNode* sn = NSTR(node); - - if (NSTRING_IS_AMBIG(node)) return 0; - - start = sn->s; - end = sn->end; - if (start >= end) return 0; - - r = 0; - top_root = root = prev_node = snode = NULL_NODE; - alt_num = 1; - p = start; - while (p < end) { - n = ONIGENC_GET_CASE_FOLD_CODES_BY_STR(reg->enc, reg->case_fold_flag, - p, end, items); - if (n < 0) { - r = n; - goto err; - } - - len = enclen(reg->enc, p, end); - - if (n == 0) { - if (IS_NULL(snode)) { - if (IS_NULL(root) && IS_NOT_NULL(prev_node)) { - top_root = root = onig_node_list_add(NULL_NODE, prev_node); - if (IS_NULL(root)) { - onig_node_free(prev_node); - goto mem_err; - } - } - - prev_node = snode = onig_node_new_str(NULL, NULL); - if (IS_NULL(snode)) goto mem_err; - if (IS_NOT_NULL(root)) { - if (IS_NULL(onig_node_list_add(root, snode))) { - onig_node_free(snode); - goto mem_err; - } - } - } - - r = onig_node_str_cat(snode, p, p + len); - if (r != 0) goto err; - } - else { - alt_num *= (n + 1); - if (alt_num > THRESHOLD_CASE_FOLD_ALT_FOR_EXPANSION) break; - - if (IS_NULL(root) && IS_NOT_NULL(prev_node)) { - top_root = root = onig_node_list_add(NULL_NODE, prev_node); - if (IS_NULL(root)) { - onig_node_free(prev_node); - goto mem_err; - } - } - - r = expand_case_fold_string_alt(n, items, p, len, end, reg, &prev_node); - if (r < 0) goto mem_err; - if (r == 1) { - if (IS_NULL(root)) { - top_root = prev_node; - } - else { - if (IS_NULL(onig_node_list_add(root, prev_node))) { - onig_node_free(prev_node); - goto mem_err; - } - } - - root = NCAR(prev_node); - } - else { /* r == 0 */ - if (IS_NOT_NULL(root)) { - if (IS_NULL(onig_node_list_add(root, prev_node))) { - onig_node_free(prev_node); - goto mem_err; - } - } - } - - snode = NULL_NODE; - } - - p += len; - } - - if (p < end) { - Node *srem; - - r = expand_case_fold_make_rem_string(&srem, p, end, reg); - if (r != 0) goto mem_err; - - if (IS_NOT_NULL(prev_node) && IS_NULL(root)) { - top_root = root = onig_node_list_add(NULL_NODE, prev_node); - if (IS_NULL(root)) { - onig_node_free(srem); - onig_node_free(prev_node); - goto mem_err; - } - } - - if (IS_NULL(root)) { - prev_node = srem; - } - else { - if (IS_NULL(onig_node_list_add(root, srem))) { - onig_node_free(srem); - goto mem_err; - } - } - } - - /* ending */ - top_root = (IS_NOT_NULL(top_root) ? top_root : prev_node); - swap_node(node, top_root); - onig_node_free(top_root); - return 0; - - mem_err: - r = ONIGERR_MEMORY; - - err: - onig_node_free(top_root); - return r; -} - - -#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 NT_LIST: - { - Node* prev = NULL_NODE; - do { - r = setup_comb_exp_check(NCAR(node), r, env); - prev = NCAR(node); - } while (r >= 0 && IS_NOT_NULL(node = NCDR(node))); - } - break; - - case NT_ALT: - { - int ret; - do { - ret = setup_comb_exp_check(NCAR(node), state, env); - r |= ret; - } while (ret >= 0 && IS_NOT_NULL(node = NCDR(node))); - } - break; - - case NT_QTFR: - { - int child_state = state; - int add_state = 0; - QtfrNode* qn = NQTFR(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) == NT_ENCLOSE) { - EncloseNode* en = NENCLOSE(qn->target); - if (en->type == ENCLOSE_MEMORY) { - if (NTYPE(en->target) == NT_QTFR) { - QtfrNode* q = NQTFR(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 NT_ENCLOSE: - { - EncloseNode* en = NENCLOSE(node); - - switch (en->type) { - case ENCLOSE_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 NT_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) -#define IN_VAR_REPEAT (1<<3) - -/* setup_tree does the following work. - 1. check empty loop. (set qn->target_empty_info) - 2. expand ignore-case in char class. - 3. set memory status bit flags. (reg->mem_stats) - 4. set qn->head_exact for [push, exact] -> [push_or_jump_exact1, exact]. - 5. find invalid patterns in look-behind. - 6. expand repeated string. - */ -static int -setup_tree(Node* node, regex_t* reg, int state, ScanEnv* env) -{ - int type; - int r = 0; - - type = NTYPE(node); - switch (type) { - case NT_LIST: - { - Node* prev = NULL_NODE; - do { - r = setup_tree(NCAR(node), reg, state, env); - if (IS_NOT_NULL(prev) && r == 0) { - r = next_setup(prev, NCAR(node), reg); - } - prev = NCAR(node); - } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); - } - break; - - case NT_ALT: - do { - r = setup_tree(NCAR(node), reg, (state | IN_ALT), env); - } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); - break; - - case NT_CCLASS: - break; - - case NT_STR: - if (IS_IGNORECASE(reg->options) && !NSTRING_IS_RAW(node)) { - r = expand_case_fold_string(node, reg); - } - break; - - case NT_CTYPE: - case NT_CANY: - break; - -#ifdef USE_SUBEXP_CALL - case NT_CALL: - break; -#endif - - case NT_BREF: - { - int i; - int* p; - Node** nodes = SCANENV_MEM_NODES(env); - BRefNode* br = NBREF(node); - p = BACKREFS_P(br); - for (i = 0; i < br->back_num; i++) { - if (p[i] > env->num_mem) return ONIGERR_INVALID_BACKREF; - BIT_STATUS_ON_AT(env->backrefed_mem, p[i]); - BIT_STATUS_ON_AT(env->bt_mem_start, p[i]); -#ifdef USE_BACKREF_WITH_LEVEL - if (IS_BACKREF_NEST_LEVEL(br)) { - BIT_STATUS_ON_AT(env->bt_mem_end, p[i]); - } -#endif - SET_ENCLOSE_STATUS(nodes[p[i]], NST_MEM_BACKREFED); - } - } - break; - - case NT_QTFR: - { - OnigDistance d; - QtfrNode* qn = NQTFR(node); - Node* target = qn->target; - - if ((state & IN_REPEAT) != 0) { - qn->state |= NST_IN_REPEAT; - } - - if (IS_REPEAT_INFINITE(qn->upper) || qn->upper >= 1) { - r = get_min_match_length(target, &d, env); - if (r) break; - if (d == 0) { - qn->target_empty_info = NQ_TARGET_IS_EMPTY; -#ifdef USE_MONOMANIAC_CHECK_CAPTURES_IN_ENDLESS_REPEAT - r = quantifiers_memory_node_info(target); - if (r < 0) break; - if (r > 0) { - qn->target_empty_info = r; - } -#endif -#if 0 - r = get_max_match_length(target, &d, env); - if (r == 0 && d == 0) { - /* ()* ==> ()?, ()+ ==> () */ - qn->upper = 1; - if (qn->lower > 1) qn->lower = 1; - if (NTYPE(target) == NT_STR) { - qn->upper = qn->lower = 0; /* /(?:)+/ ==> // */ - } - } -#endif - } - } - - state |= IN_REPEAT; - if (qn->lower != qn->upper) - state |= IN_VAR_REPEAT; - r = setup_tree(target, reg, state, env); - if (r) break; - - /* expand string */ -#define EXPAND_STRING_MAX_LENGTH 100 - if (NTYPE(target) == NT_STR) { - if (!IS_REPEAT_INFINITE(qn->lower) && qn->lower == qn->upper && - qn->lower > 1 && qn->lower <= EXPAND_STRING_MAX_LENGTH) { - int len = NSTRING_LEN(target); - StrNode* sn = NSTR(target); - - if (len * qn->lower <= EXPAND_STRING_MAX_LENGTH) { - int i, n = qn->lower; - onig_node_conv_to_str_node(node, NSTR(target)->flag); - for (i = 0; i < n; i++) { - r = onig_node_str_cat(node, sn->s, sn->end); - if (r) break; - } - onig_node_free(target); - break; /* break case NT_QTFR: */ - } - } - } - -#ifdef USE_OP_PUSH_OR_JUMP_EXACT - if (qn->greedy && (qn->target_empty_info != 0)) { - if (NTYPE(target) == NT_QTFR) { - QtfrNode* tqn = NQTFR(target); - if (IS_NOT_NULL(tqn->head_exact)) { - qn->head_exact = tqn->head_exact; - tqn->head_exact = NULL; - } - } - else { - qn->head_exact = get_head_value_node(qn->target, 1, reg); - } - } -#endif - } - break; - - case NT_ENCLOSE: - { - EncloseNode* en = NENCLOSE(node); - - switch (en->type) { - case ENCLOSE_OPTION: - { - OnigOptionType options = reg->options; - reg->options = NENCLOSE(node)->option; - r = setup_tree(NENCLOSE(node)->target, reg, state, env); - reg->options = options; - } - break; - - case ENCLOSE_MEMORY: - if ((state & (IN_ALT | IN_NOT | IN_VAR_REPEAT)) != 0) { - BIT_STATUS_ON_AT(env->bt_mem_start, en->regnum); - /* SET_ENCLOSE_STATUS(node, NST_MEM_IN_ALT_NOT); */ - } - r = setup_tree(en->target, reg, state, env); - break; - - case ENCLOSE_STOP_BACKTRACK: - { - Node* target = en->target; - r = setup_tree(target, reg, state, env); - if (NTYPE(target) == NT_QTFR) { - QtfrNode* tqn = NQTFR(target); - if (IS_REPEAT_INFINITE(tqn->upper) && tqn->lower <= 1 && - tqn->greedy != 0) { /* (?>a*), a*+ etc... */ - int qtype = NTYPE(tqn->target); - if (IS_NODE_TYPE_SIMPLE(qtype)) - SET_ENCLOSE_STATUS(node, NST_STOP_BT_SIMPLE_REPEAT); - } - } - } - break; - } - } - break; - - case NT_ANCHOR: - { - AnchorNode* an = NANCHOR(node); - - switch (an->type) { - case ANCHOR_PREC_READ: - r = setup_tree(an->target, reg, state, env); - break; - case ANCHOR_PREC_READ_NOT: - r = setup_tree(an->target, reg, (state | IN_NOT), env); - break; - -/* allowed node types in look-behind */ -#define ALLOWED_TYPE_IN_LB \ - ( BIT_NT_LIST | BIT_NT_ALT | BIT_NT_STR | BIT_NT_CCLASS | BIT_NT_CTYPE | \ - BIT_NT_CANY | BIT_NT_ANCHOR | BIT_NT_ENCLOSE | BIT_NT_QTFR | BIT_NT_CALL ) - -#define ALLOWED_ENCLOSE_IN_LB ( ENCLOSE_MEMORY ) -#define ALLOWED_ENCLOSE_IN_LB_NOT 0 - -#define ALLOWED_ANCHOR_IN_LB \ -( ANCHOR_LOOK_BEHIND | ANCHOR_BEGIN_LINE | ANCHOR_END_LINE | ANCHOR_BEGIN_BUF | ANCHOR_BEGIN_POSITION ) -#define ALLOWED_ANCHOR_IN_LB_NOT \ -( ANCHOR_LOOK_BEHIND | ANCHOR_LOOK_BEHIND_NOT | ANCHOR_BEGIN_LINE | ANCHOR_END_LINE | ANCHOR_BEGIN_BUF | ANCHOR_BEGIN_POSITION ) - - case ANCHOR_LOOK_BEHIND: - { - r = check_type_tree(an->target, ALLOWED_TYPE_IN_LB, - ALLOWED_ENCLOSE_IN_LB, ALLOWED_ANCHOR_IN_LB); - if (r < 0) return r; - if (r > 0) return ONIGERR_INVALID_LOOK_BEHIND_PATTERN; - r = setup_look_behind(node, reg, env); - if (r != 0) return r; - r = setup_tree(an->target, reg, state, env); - } - break; - - case ANCHOR_LOOK_BEHIND_NOT: - { - r = check_type_tree(an->target, ALLOWED_TYPE_IN_LB, - ALLOWED_ENCLOSE_IN_LB_NOT, ALLOWED_ANCHOR_IN_LB_NOT); - if (r < 0) return r; - if (r > 0) return ONIGERR_INVALID_LOOK_BEHIND_PATTERN; - r = setup_look_behind(node, reg, env); - if (r != 0) return r; - r = setup_tree(an->target, reg, (state | IN_NOT), env); - } - break; - } - } - break; - - default: - break; - } - - return r; -} - -/* set skip map for Boyer-Moor search */ -static int -set_bm_skip(UChar* s, UChar* end, OnigEncoding enc ARG_UNUSED, - UChar skip[], int** int_skip) -{ - int i, len; - - len = end - s; - if (len < ONIG_CHAR_TABLE_SIZE) { - for (i = 0; i < ONIG_CHAR_TABLE_SIZE; i++) skip[i] = len; - - for (i = 0; i < len - 1; i++) - skip[s[i]] = len - 1 - i; - } - else { - if (IS_NULL(*int_skip)) { - *int_skip = (int* )xmalloc(sizeof(int) * ONIG_CHAR_TABLE_SIZE); - if (IS_NULL(*int_skip)) return ONIGERR_MEMORY; - } - for (i = 0; i < ONIG_CHAR_TABLE_SIZE; i++) (*int_skip)[i] = len; - - for (i = 0; i < len - 1; i++) - (*int_skip)[s[i]] = len - 1 - i; - } - return 0; -} - -#define OPT_EXACT_MAXLEN 24 - -typedef struct { - OnigDistance min; /* min byte length */ - OnigDistance max; /* max byte length */ -} MinMaxLen; - -typedef struct { - MinMaxLen mmd; - OnigEncoding enc; - OnigOptionType options; - OnigCaseFoldType case_fold_flag; - ScanEnv* scan_env; -} OptEnv; - -typedef struct { - int left_anchor; - int right_anchor; -} OptAncInfo; - -typedef struct { - MinMaxLen mmd; /* info position */ - OptAncInfo anc; - - int reach_end; - int ignore_case; - int len; - UChar s[OPT_EXACT_MAXLEN]; -} OptExactInfo; - -typedef struct { - MinMaxLen mmd; /* info position */ - OptAncInfo anc; - - int value; /* weighted value */ - UChar map[ONIG_CHAR_TABLE_SIZE]; -} OptMapInfo; - -typedef struct { - MinMaxLen len; - - OptAncInfo anc; - OptExactInfo exb; /* boundary */ - OptExactInfo exm; /* middle */ - OptExactInfo expr; /* prec read (?=...) */ - - OptMapInfo map; /* boundary */ -} NodeOptInfo; - - -static int -map_position_value(OnigEncoding enc, int i) -{ - static const short int ByteValTable[] = { - 5, 1, 1, 1, 1, 1, 1, 1, 1, 10, 10, 1, 1, 10, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 12, 4, 7, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, - 5, 6, 6, 6, 6, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 6, 5, 5, 5, - 5, 6, 6, 6, 6, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1 - }; - - if (i < (int )(sizeof(ByteValTable)/sizeof(ByteValTable[0]))) { - if (i == 0 && ONIGENC_MBC_MINLEN(enc) > 1) - return 20; - else - return (int )ByteValTable[i]; - } - else - return 4; /* Take it easy. */ -} - -static int -distance_value(MinMaxLen* mm) -{ - /* 1000 / (min-max-dist + 1) */ - static const short int dist_vals[] = { - 1000, 500, 333, 250, 200, 167, 143, 125, 111, 100, - 91, 83, 77, 71, 67, 63, 59, 56, 53, 50, - 48, 45, 43, 42, 40, 38, 37, 36, 34, 33, - 32, 31, 30, 29, 29, 28, 27, 26, 26, 25, - 24, 24, 23, 23, 22, 22, 21, 21, 20, 20, - 20, 19, 19, 19, 18, 18, 18, 17, 17, 17, - 16, 16, 16, 16, 15, 15, 15, 15, 14, 14, - 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, - 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, - 11, 11, 11, 11, 11, 10, 10, 10, 10, 10 - }; - - int d; - - if (mm->max == ONIG_INFINITE_DISTANCE) return 0; - - d = mm->max - mm->min; - if (d < (int )(sizeof(dist_vals)/sizeof(dist_vals[0]))) - /* return dist_vals[d] * 16 / (mm->min + 12); */ - return (int )dist_vals[d]; - else - return 1; -} - -static int -comp_distance_value(MinMaxLen* d1, MinMaxLen* d2, int v1, int v2) -{ - if (v2 <= 0) return -1; - if (v1 <= 0) return 1; - - v1 *= distance_value(d1); - v2 *= distance_value(d2); - - if (v2 > v1) return 1; - if (v2 < v1) return -1; - - if (d2->min < d1->min) return 1; - if (d2->min > d1->min) return -1; - return 0; -} - -static int -is_equal_mml(MinMaxLen* a, MinMaxLen* b) -{ - return (a->min == b->min && a->max == b->max) ? 1 : 0; -} - - -static void -set_mml(MinMaxLen* mml, OnigDistance min, OnigDistance max) -{ - mml->min = min; - mml->max = max; -} - -static void -clear_mml(MinMaxLen* mml) -{ - mml->min = mml->max = 0; -} - -static void -copy_mml(MinMaxLen* to, MinMaxLen* from) -{ - to->min = from->min; - to->max = from->max; -} - -static void -add_mml(MinMaxLen* to, MinMaxLen* from) -{ - to->min = distance_add(to->min, from->min); - to->max = distance_add(to->max, from->max); -} - -#if 0 -static void -add_len_mml(MinMaxLen* to, OnigDistance len) -{ - to->min = distance_add(to->min, len); - to->max = distance_add(to->max, len); -} -#endif - -static void -alt_merge_mml(MinMaxLen* to, MinMaxLen* from) -{ - if (to->min > from->min) to->min = from->min; - if (to->max < from->max) to->max = from->max; -} - -static void -copy_opt_env(OptEnv* to, OptEnv* from) -{ - *to = *from; -} - -static void -clear_opt_anc_info(OptAncInfo* anc) -{ - anc->left_anchor = 0; - anc->right_anchor = 0; -} - -static void -copy_opt_anc_info(OptAncInfo* to, OptAncInfo* from) -{ - *to = *from; -} - -static void -concat_opt_anc_info(OptAncInfo* to, OptAncInfo* left, OptAncInfo* right, - OnigDistance left_len, OnigDistance right_len) -{ - clear_opt_anc_info(to); - - to->left_anchor = left->left_anchor; - if (left_len == 0) { - to->left_anchor |= right->left_anchor; - } - - to->right_anchor = right->right_anchor; - if (right_len == 0) { - to->right_anchor |= left->right_anchor; - } -} - -static int -is_left_anchor(int anc) -{ - if (anc == ANCHOR_END_BUF || anc == ANCHOR_SEMI_END_BUF || - anc == ANCHOR_END_LINE || anc == ANCHOR_PREC_READ || - anc == ANCHOR_PREC_READ_NOT) - return 0; - - return 1; -} - -static int -is_set_opt_anc_info(OptAncInfo* to, int anc) -{ - if ((to->left_anchor & anc) != 0) return 1; - - return ((to->right_anchor & anc) != 0 ? 1 : 0); -} - -static void -add_opt_anc_info(OptAncInfo* to, int anc) -{ - if (is_left_anchor(anc)) - to->left_anchor |= anc; - else - to->right_anchor |= anc; -} - -static void -remove_opt_anc_info(OptAncInfo* to, int anc) -{ - if (is_left_anchor(anc)) - to->left_anchor &= ~anc; - else - to->right_anchor &= ~anc; -} - -static void -alt_merge_opt_anc_info(OptAncInfo* to, OptAncInfo* add) -{ - to->left_anchor &= add->left_anchor; - to->right_anchor &= add->right_anchor; -} - -static int -is_full_opt_exact_info(OptExactInfo* ex) -{ - return (ex->len >= OPT_EXACT_MAXLEN ? 1 : 0); -} - -static void -clear_opt_exact_info(OptExactInfo* ex) -{ - clear_mml(&ex->mmd); - clear_opt_anc_info(&ex->anc); - ex->reach_end = 0; - ex->ignore_case = 0; - ex->len = 0; - ex->s[0] = '\0'; -} - -static void -copy_opt_exact_info(OptExactInfo* to, OptExactInfo* from) -{ - *to = *from; -} - -static void -concat_opt_exact_info(OptExactInfo* to, OptExactInfo* add, OnigEncoding enc) -{ - int i, j, len; - UChar *p, *end; - OptAncInfo tanc; - - if (! to->ignore_case && add->ignore_case) { - if (to->len >= add->len) return ; /* avoid */ - - to->ignore_case = 1; - } - - p = add->s; - end = p + add->len; - for (i = to->len; p < end; ) { - len = enclen(enc, p, end); - 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 = (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; - copy_opt_anc_info(&to->anc, &tanc); -} - -static void -concat_opt_exact_info_str(OptExactInfo* to, UChar* s, UChar* end, - int raw ARG_UNUSED, OnigEncoding enc) -{ - int i, j, len; - UChar *p; - - for (i = to->len, p = s; p < end && i < OPT_EXACT_MAXLEN; ) { - len = enclen(enc, p, end); - if (i + len > OPT_EXACT_MAXLEN) break; - for (j = 0; j < len && p < end; j++) - to->s[i++] = *p++; - } - - to->len = i; -} - -static void -alt_merge_opt_exact_info(OptExactInfo* to, OptExactInfo* add, OptEnv* env) -{ - int i, j, len; - - if (add->len == 0 || to->len == 0) { - clear_opt_exact_info(to); - return ; - } - - if (! is_equal_mml(&to->mmd, &add->mmd)) { - clear_opt_exact_info(to); - return ; - } - - for (i = 0; i < to->len && i < add->len; ) { - if (to->s[i] != add->s[i]) break; - len = enclen(env->enc, to->s + i, to->s + to->len); - - for (j = 1; j < len; j++) { - if (to->s[i+j] != add->s[i+j]) break; - } - if (j < len) break; - i += len; - } - - if (! add->reach_end || i < add->len || i < to->len) { - to->reach_end = 0; - } - to->len = i; - to->ignore_case |= add->ignore_case; - - alt_merge_opt_anc_info(&to->anc, &add->anc); - if (! to->reach_end) to->anc.right_anchor = 0; -} - -static void -select_opt_exact_info(OnigEncoding enc, OptExactInfo* now, OptExactInfo* alt) -{ - int v1, v2; - - v1 = now->len; - v2 = alt->len; - - if (v2 == 0) { - return ; - } - else if (v1 == 0) { - copy_opt_exact_info(now, alt); - return ; - } - else if (v1 <= 2 && v2 <= 2) { - /* ByteValTable[x] is big value --> low price */ - v2 = map_position_value(enc, now->s[0]); - v1 = map_position_value(enc, alt->s[0]); - - if (now->len > 1) v1 += 5; - if (alt->len > 1) v2 += 5; - } - - if (now->ignore_case == 0) v1 *= 2; - if (alt->ignore_case == 0) v2 *= 2; - - if (comp_distance_value(&now->mmd, &alt->mmd, v1, v2) > 0) - copy_opt_exact_info(now, alt); -} - -static void -clear_opt_map_info(OptMapInfo* map) -{ - static const OptMapInfo clean_info = { - {0, 0}, {0, 0}, 0, - { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 - } - }; - - xmemcpy(map, &clean_info, sizeof(OptMapInfo)); -} - -static void -copy_opt_map_info(OptMapInfo* to, OptMapInfo* from) -{ - *to = *from; -} - -static void -add_char_opt_map_info(OptMapInfo* map, UChar c, OnigEncoding enc) -{ - if (map->map[c] == 0) { - map->map[c] = 1; - map->value += map_position_value(enc, c); - } -} - -static int -add_char_amb_opt_map_info(OptMapInfo* map, UChar* p, UChar* end, - OnigEncoding enc, OnigCaseFoldType case_fold_flag) -{ - OnigCaseFoldCodeItem items[ONIGENC_GET_CASE_FOLD_CODES_MAX_NUM]; - UChar buf[ONIGENC_CODE_TO_MBC_MAXLEN]; - int i, n; - - add_char_opt_map_info(map, p[0], enc); - - case_fold_flag = DISABLE_CASE_FOLD_MULTI_CHAR(case_fold_flag); - n = ONIGENC_GET_CASE_FOLD_CODES_BY_STR(enc, case_fold_flag, p, end, items); - if (n < 0) return n; - - for (i = 0; i < n; i++) { - ONIGENC_CODE_TO_MBC(enc, items[i].code[0], buf); - add_char_opt_map_info(map, buf[0], enc); - } - - return 0; -} - -static void -select_opt_map_info(OptMapInfo* now, OptMapInfo* alt) -{ - const int z = 1<<15; /* 32768: something big value */ - - int v1, v2; - - if (alt->value == 0) return ; - if (now->value == 0) { - copy_opt_map_info(now, alt); - return ; - } - - v1 = z / now->value; - v2 = z / alt->value; - if (comp_distance_value(&now->mmd, &alt->mmd, v1, v2) > 0) - copy_opt_map_info(now, alt); -} - -static int -comp_opt_exact_or_map_info(OptExactInfo* e, OptMapInfo* m) -{ -#define COMP_EM_BASE 20 - int ve, vm; - - if (m->value <= 0) return -1; - - ve = COMP_EM_BASE * e->len * (e->ignore_case ? 1 : 2); - vm = COMP_EM_BASE * 5 * 2 / m->value; - return comp_distance_value(&e->mmd, &m->mmd, ve, vm); -} - -static void -alt_merge_opt_map_info(OnigEncoding enc, OptMapInfo* to, OptMapInfo* add) -{ - int i, val; - - /* if (! is_equal_mml(&to->mmd, &add->mmd)) return ; */ - if (to->value == 0) return ; - if (add->value == 0 || to->mmd.max < add->mmd.min) { - clear_opt_map_info(to); - return ; - } - - alt_merge_mml(&to->mmd, &add->mmd); - - val = 0; - for (i = 0; i < ONIG_CHAR_TABLE_SIZE; i++) { - if (add->map[i]) - to->map[i] = 1; - - if (to->map[i]) - val += map_position_value(enc, i); - } - to->value = val; - - alt_merge_opt_anc_info(&to->anc, &add->anc); -} - -static void -set_bound_node_opt_info(NodeOptInfo* opt, MinMaxLen* mmd) -{ - copy_mml(&(opt->exb.mmd), mmd); - copy_mml(&(opt->expr.mmd), mmd); - copy_mml(&(opt->map.mmd), mmd); -} - -static void -clear_node_opt_info(NodeOptInfo* opt) -{ - clear_mml(&opt->len); - clear_opt_anc_info(&opt->anc); - clear_opt_exact_info(&opt->exb); - clear_opt_exact_info(&opt->exm); - clear_opt_exact_info(&opt->expr); - clear_opt_map_info(&opt->map); -} - -static void -copy_node_opt_info(NodeOptInfo* to, NodeOptInfo* from) -{ - *to = *from; -} - -static void -concat_left_node_opt_info(OnigEncoding enc, NodeOptInfo* to, NodeOptInfo* add) -{ - int exb_reach, exm_reach; - OptAncInfo tanc; - - concat_opt_anc_info(&tanc, &to->anc, &add->anc, to->len.max, add->len.max); - copy_opt_anc_info(&to->anc, &tanc); - - if (add->exb.len > 0 && to->len.max == 0) { - concat_opt_anc_info(&tanc, &to->anc, &add->exb.anc, - to->len.max, add->len.max); - copy_opt_anc_info(&add->exb.anc, &tanc); - } - - if (add->map.value > 0 && to->len.max == 0) { - if (add->map.mmd.max == 0) - add->map.anc.left_anchor |= to->anc.left_anchor; - } - - exb_reach = to->exb.reach_end; - exm_reach = to->exm.reach_end; - - if (add->len.max != 0) - to->exb.reach_end = to->exm.reach_end = 0; - - if (add->exb.len > 0) { - if (exb_reach) { - 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, enc); - clear_opt_exact_info(&add->exb); - } - } - select_opt_exact_info(enc, &to->exm, &add->exb); - select_opt_exact_info(enc, &to->exm, &add->exm); - - if (to->expr.len > 0) { - if (add->len.max > 0) { - if (to->expr.len > (int )add->len.max) - to->expr.len = add->len.max; - - if (to->expr.mmd.max == 0) - select_opt_exact_info(enc, &to->exb, &to->expr); - else - select_opt_exact_info(enc, &to->exm, &to->expr); - } - } - else if (add->expr.len > 0) { - copy_opt_exact_info(&to->expr, &add->expr); - } - - select_opt_map_info(&to->map, &add->map); - - add_mml(&to->len, &add->len); -} - -static void -alt_merge_node_opt_info(NodeOptInfo* to, NodeOptInfo* add, OptEnv* env) -{ - alt_merge_opt_anc_info (&to->anc, &add->anc); - alt_merge_opt_exact_info(&to->exb, &add->exb, env); - alt_merge_opt_exact_info(&to->exm, &add->exm, env); - alt_merge_opt_exact_info(&to->expr, &add->expr, env); - alt_merge_opt_map_info(env->enc, &to->map, &add->map); - - alt_merge_mml(&to->len, &add->len); -} - - -#define MAX_NODE_OPT_INFO_REF_COUNT 5 - -static int -optimize_node_left(Node* node, NodeOptInfo* opt, OptEnv* env) -{ - int type; - int r = 0; - - clear_node_opt_info(opt); - set_bound_node_opt_info(opt, &env->mmd); - - type = NTYPE(node); - switch (type) { - case NT_LIST: - { - OptEnv nenv; - NodeOptInfo nopt; - Node* nd = node; - - copy_opt_env(&nenv, env); - do { - r = optimize_node_left(NCAR(nd), &nopt, &nenv); - if (r == 0) { - add_mml(&nenv.mmd, &nopt.len); - concat_left_node_opt_info(env->enc, opt, &nopt); - } - } while (r == 0 && IS_NOT_NULL(nd = NCDR(nd))); - } - break; - - case NT_ALT: - { - NodeOptInfo nopt; - Node* nd = node; - - do { - r = optimize_node_left(NCAR(nd), &nopt, env); - if (r == 0) { - if (nd == node) copy_node_opt_info(opt, &nopt); - else alt_merge_node_opt_info(opt, &nopt, env); - } - } while ((r == 0) && IS_NOT_NULL(nd = NCDR(nd))); - } - break; - - case NT_STR: - { - StrNode* sn = NSTR(node); - int slen = sn->end - sn->s; - int is_raw = NSTRING_IS_RAW(node); - - if (! NSTRING_IS_AMBIG(node)) { - concat_opt_exact_info_str(&opt->exb, sn->s, sn->end, - NSTRING_IS_RAW(node), env->enc); - if (slen > 0) { - add_char_opt_map_info(&opt->map, *(sn->s), env->enc); - } - set_mml(&opt->len, slen, slen); - } - else { - int max; - - if (NSTRING_IS_DONT_GET_OPT_INFO(node)) { - int n = onigenc_strlen(env->enc, sn->s, sn->end); - max = ONIGENC_MBC_MAXLEN_DIST(env->enc) * n; - } - else { - concat_opt_exact_info_str(&opt->exb, sn->s, sn->end, - is_raw, env->enc); - opt->exb.ignore_case = 1; - - if (slen > 0) { - r = add_char_amb_opt_map_info(&opt->map, sn->s, sn->end, - env->enc, env->case_fold_flag); - if (r != 0) break; - } - - max = slen; - } - - set_mml(&opt->len, slen, max); - } - - if (opt->exb.len == slen) - opt->exb.reach_end = 1; - } - break; - - case NT_CCLASS: - { - int i, z; - CClassNode* cc = NCCLASS(node); - - /* no need to check ignore case. (setted in setup_tree()) */ - - if (IS_NOT_NULL(cc->mbuf) || IS_NCCLASS_NOT(cc)) { - OnigDistance min = ONIGENC_MBC_MINLEN(env->enc); - OnigDistance max = ONIGENC_MBC_MAXLEN_DIST(env->enc); - - set_mml(&opt->len, min, max); - } - else { - for (i = 0; i < SINGLE_BYTE_SIZE; i++) { - z = BITSET_AT(cc->bs, i); - if ((z && !IS_NCCLASS_NOT(cc)) || (!z && IS_NCCLASS_NOT(cc))) { - add_char_opt_map_info(&opt->map, (UChar )i, env->enc); - } - } - set_mml(&opt->len, 1, 1); - } - } - break; - - case NT_CTYPE: - { - int i, min, max; - - max = ONIGENC_MBC_MAXLEN_DIST(env->enc); - - if (max == 1) { - min = 1; - - switch (NCTYPE(node)->ctype) { - case ONIGENC_CTYPE_WORD: - if (NCTYPE(node)->not != 0) { - for (i = 0; i < SINGLE_BYTE_SIZE; i++) { - if (! ONIGENC_IS_CODE_WORD(env->enc, i)) { - add_char_opt_map_info(&opt->map, (UChar )i, env->enc); - } - } - } - else { - for (i = 0; i < SINGLE_BYTE_SIZE; i++) { - if (ONIGENC_IS_CODE_WORD(env->enc, i)) { - add_char_opt_map_info(&opt->map, (UChar )i, env->enc); - } - } - } - break; - } - } - else { - min = ONIGENC_MBC_MINLEN(env->enc); - } - set_mml(&opt->len, min, max); - } - break; - - case NT_CANY: - { - OnigDistance min = ONIGENC_MBC_MINLEN(env->enc); - OnigDistance max = ONIGENC_MBC_MAXLEN_DIST(env->enc); - set_mml(&opt->len, min, max); - } - break; - - case NT_ANCHOR: - switch (NANCHOR(node)->type) { - case ANCHOR_BEGIN_BUF: - case ANCHOR_BEGIN_POSITION: - case ANCHOR_BEGIN_LINE: - case ANCHOR_END_BUF: - case ANCHOR_SEMI_END_BUF: - case ANCHOR_END_LINE: - add_opt_anc_info(&opt->anc, NANCHOR(node)->type); - break; - - case ANCHOR_PREC_READ: - { - NodeOptInfo nopt; - - r = optimize_node_left(NANCHOR(node)->target, &nopt, env); - if (r == 0) { - if (nopt.exb.len > 0) - copy_opt_exact_info(&opt->expr, &nopt.exb); - else if (nopt.exm.len > 0) - copy_opt_exact_info(&opt->expr, &nopt.exm); - - opt->expr.reach_end = 0; - - if (nopt.map.value > 0) - copy_opt_map_info(&opt->map, &nopt.map); - } - } - break; - - case ANCHOR_PREC_READ_NOT: - case ANCHOR_LOOK_BEHIND: /* Sorry, I can't make use of it. */ - case ANCHOR_LOOK_BEHIND_NOT: - break; - } - break; - - case NT_BREF: - { - int i; - int* backs; - OnigDistance min, max, tmin, tmax; - Node** nodes = SCANENV_MEM_NODES(env->scan_env); - BRefNode* br = NBREF(node); - - if (br->state & NST_RECURSION) { - set_mml(&opt->len, 0, ONIG_INFINITE_DISTANCE); - break; - } - backs = BACKREFS_P(br); - r = get_min_match_length(nodes[backs[0]], &min, env->scan_env); - if (r != 0) break; - r = get_max_match_length(nodes[backs[0]], &max, env->scan_env); - if (r != 0) break; - for (i = 1; i < br->back_num; i++) { - r = get_min_match_length(nodes[backs[i]], &tmin, env->scan_env); - if (r != 0) break; - r = get_max_match_length(nodes[backs[i]], &tmax, env->scan_env); - if (r != 0) break; - if (min > tmin) min = tmin; - if (max < tmax) max = tmax; - } - if (r == 0) set_mml(&opt->len, min, max); - } - break; - -#ifdef USE_SUBEXP_CALL - case NT_CALL: - if (IS_CALL_RECURSION(NCALL(node))) - set_mml(&opt->len, 0, ONIG_INFINITE_DISTANCE); - else { - OnigOptionType save = env->options; - env->options = NENCLOSE(NCALL(node)->target)->option; - r = optimize_node_left(NCALL(node)->target, opt, env); - env->options = save; - } - break; -#endif - - case NT_QTFR: - { - int i; - OnigDistance min, max; - NodeOptInfo nopt; - QtfrNode* qn = NQTFR(node); - - r = optimize_node_left(qn->target, &nopt, env); - if (r) break; - - if (qn->lower == 0 && IS_REPEAT_INFINITE(qn->upper)) { - if (env->mmd.max == 0 && - NTYPE(qn->target) == NT_CANY && qn->greedy) { - if (IS_MULTILINE(env->options)) - add_opt_anc_info(&opt->anc, ANCHOR_ANYCHAR_STAR_ML); - else - add_opt_anc_info(&opt->anc, ANCHOR_ANYCHAR_STAR); - } - } - else { - if (qn->lower > 0) { - copy_node_opt_info(opt, &nopt); - if (nopt.exb.len > 0) { - 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, env->enc); - } - if (i < qn->lower) { - opt->exb.reach_end = 0; - } - } - } - - if (qn->lower != qn->upper) { - opt->exb.reach_end = 0; - opt->exm.reach_end = 0; - } - if (qn->lower > 1) - opt->exm.reach_end = 0; - } - } - - min = distance_multiply(nopt.len.min, qn->lower); - if (IS_REPEAT_INFINITE(qn->upper)) - max = (nopt.len.max > 0 ? ONIG_INFINITE_DISTANCE : 0); - else - max = distance_multiply(nopt.len.max, qn->upper); - - set_mml(&opt->len, min, max); - } - break; - - case NT_ENCLOSE: - { - EncloseNode* en = NENCLOSE(node); - - switch (en->type) { - case ENCLOSE_OPTION: - { - OnigOptionType save = env->options; - - env->options = en->option; - r = optimize_node_left(en->target, opt, env); - env->options = save; - } - break; - - case ENCLOSE_MEMORY: -#ifdef USE_SUBEXP_CALL - en->opt_count++; - if (en->opt_count > MAX_NODE_OPT_INFO_REF_COUNT) { - OnigDistance min, max; - - min = 0; - max = ONIG_INFINITE_DISTANCE; - if (IS_ENCLOSE_MIN_FIXED(en)) min = en->min_len; - if (IS_ENCLOSE_MAX_FIXED(en)) max = en->max_len; - set_mml(&opt->len, min, max); - } - else -#endif - { - r = optimize_node_left(en->target, opt, env); - - if (is_set_opt_anc_info(&opt->anc, ANCHOR_ANYCHAR_STAR_MASK)) { - if (BIT_STATUS_AT(env->scan_env->backrefed_mem, en->regnum)) - remove_opt_anc_info(&opt->anc, ANCHOR_ANYCHAR_STAR_MASK); - } - } - break; - - case ENCLOSE_STOP_BACKTRACK: - r = optimize_node_left(en->target, opt, env); - break; - } - } - break; - - default: -#ifdef ONIG_DEBUG - fprintf(stderr, "optimize_node_left: undefined node type %d\n", - NTYPE(node)); -#endif - r = ONIGERR_TYPE_BUG; - break; - } - - return r; -} - -static int -set_optimize_exact_info(regex_t* reg, OptExactInfo* e) -{ - int r; - - if (e->len == 0) return 0; - - if (e->ignore_case) { - reg->exact = (UChar* )xmalloc(e->len); - CHECK_NULL_RETURN_MEMERR(reg->exact); - xmemcpy(reg->exact, e->s, e->len); - reg->exact_end = reg->exact + e->len; - reg->optimize = ONIG_OPTIMIZE_EXACT_IC; - } - else { - int allow_reverse; - - reg->exact = str_dup(e->s, e->s + e->len); - CHECK_NULL_RETURN_MEMERR(reg->exact); - reg->exact_end = reg->exact + e->len; - - allow_reverse = - ONIGENC_IS_ALLOWED_REVERSE_MATCH(reg->enc, reg->exact, reg->exact_end); - - if (e->len >= 3 || (e->len >= 2 && allow_reverse)) { - r = set_bm_skip(reg->exact, reg->exact_end, reg->enc, - reg->map, &(reg->int_map)); - if (r) return r; - - reg->optimize = (allow_reverse != 0 - ? ONIG_OPTIMIZE_EXACT_BM : ONIG_OPTIMIZE_EXACT_BM_NOT_REV); - } - else { - reg->optimize = ONIG_OPTIMIZE_EXACT; - } - } - - reg->dmin = e->mmd.min; - reg->dmax = e->mmd.max; - - if (reg->dmin != ONIG_INFINITE_DISTANCE) { - reg->threshold_len = reg->dmin + (reg->exact_end - reg->exact); - } - - return 0; -} - -static void -set_optimize_map_info(regex_t* reg, OptMapInfo* m) -{ - int i; - - for (i = 0; i < ONIG_CHAR_TABLE_SIZE; i++) - reg->map[i] = m->map[i]; - - reg->optimize = ONIG_OPTIMIZE_MAP; - reg->dmin = m->mmd.min; - reg->dmax = m->mmd.max; - - if (reg->dmin != ONIG_INFINITE_DISTANCE) { - reg->threshold_len = reg->dmin + 1; - } -} - -static void -set_sub_anchor(regex_t* reg, OptAncInfo* anc) -{ - reg->sub_anchor |= anc->left_anchor & ANCHOR_BEGIN_LINE; - reg->sub_anchor |= anc->right_anchor & ANCHOR_END_LINE; -} - -#ifdef ONIG_DEBUG -static void print_optimize_info(FILE* f, regex_t* reg); -#endif - -static int -set_optimize_info_from_tree(Node* node, regex_t* reg, ScanEnv* scan_env) -{ - - int r; - NodeOptInfo opt; - OptEnv env; - - env.enc = reg->enc; - env.options = reg->options; - env.case_fold_flag = reg->case_fold_flag; - env.scan_env = scan_env; - clear_mml(&env.mmd); - - r = optimize_node_left(node, &opt, &env); - if (r) return r; - - reg->anchor = opt.anc.left_anchor & (ANCHOR_BEGIN_BUF | - ANCHOR_BEGIN_POSITION | ANCHOR_ANYCHAR_STAR | ANCHOR_ANYCHAR_STAR_ML); - - reg->anchor |= opt.anc.right_anchor & (ANCHOR_END_BUF | ANCHOR_SEMI_END_BUF); - - if (reg->anchor & (ANCHOR_END_BUF | ANCHOR_SEMI_END_BUF)) { - reg->anchor_dmin = opt.len.min; - reg->anchor_dmax = opt.len.max; - } - - if (opt.exb.len > 0 || opt.exm.len > 0) { - select_opt_exact_info(reg->enc, &opt.exb, &opt.exm); - if (opt.map.value > 0 && - comp_opt_exact_or_map_info(&opt.exb, &opt.map) > 0) { - goto set_map; - } - else { - r = set_optimize_exact_info(reg, &opt.exb); - set_sub_anchor(reg, &opt.exb.anc); - } - } - else if (opt.map.value > 0) { - set_map: - set_optimize_map_info(reg, &opt.map); - set_sub_anchor(reg, &opt.map.anc); - } - else { - reg->sub_anchor |= opt.anc.left_anchor & ANCHOR_BEGIN_LINE; - if (opt.len.max == 0) - reg->sub_anchor |= opt.anc.right_anchor & ANCHOR_END_LINE; - } - -#if defined(ONIG_DEBUG_COMPILE) || defined(ONIG_DEBUG_MATCH) - print_optimize_info(stderr, reg); -#endif - return r; -} - -static void -clear_optimize_info(regex_t* reg) -{ - reg->optimize = ONIG_OPTIMIZE_NONE; - reg->anchor = 0; - reg->anchor_dmin = 0; - reg->anchor_dmax = 0; - reg->sub_anchor = 0; - reg->exact_end = (UChar* )NULL; - reg->threshold_len = 0; - if (IS_NOT_NULL(reg->exact)) { - xfree(reg->exact); - reg->exact = (UChar* )NULL; - } -} - -#ifdef ONIG_DEBUG - -static void print_enc_string(FILE* fp, OnigEncoding enc, - const UChar *s, const UChar *end) -{ - fprintf(fp, "\nPATTERN: /"); - - if (ONIGENC_MBC_MINLEN(enc) > 1) { - const UChar *p; - OnigCodePoint code; - - p = s; - while (p < end) { - code = ONIGENC_MBC_TO_CODE(enc, p, end); - if (code >= 0x80) { - fprintf(fp, " 0x%04x ", (int )code); - } - else { - fputc((int )code, fp); - } - - p += enclen(enc, p); - } - } - else { - while (s < end) { - fputc((int )*s, fp); - s++; - } - } - - fprintf(fp, "/\n"); -} - -static void -print_distance_range(FILE* f, OnigDistance a, OnigDistance b) -{ - if (a == ONIG_INFINITE_DISTANCE) - fputs("inf", f); - else - fprintf(f, "(%u)", a); - - fputs("-", f); - - if (b == ONIG_INFINITE_DISTANCE) - fputs("inf", f); - else - fprintf(f, "(%u)", b); -} - -static void -print_anchor(FILE* f, int anchor) -{ - int q = 0; - - fprintf(f, "["); - - if (anchor & ANCHOR_BEGIN_BUF) { - fprintf(f, "begin-buf"); - q = 1; - } - if (anchor & ANCHOR_BEGIN_LINE) { - if (q) fprintf(f, ", "); - q = 1; - fprintf(f, "begin-line"); - } - if (anchor & ANCHOR_BEGIN_POSITION) { - if (q) fprintf(f, ", "); - q = 1; - fprintf(f, "begin-pos"); - } - if (anchor & ANCHOR_END_BUF) { - if (q) fprintf(f, ", "); - q = 1; - fprintf(f, "end-buf"); - } - if (anchor & ANCHOR_SEMI_END_BUF) { - if (q) fprintf(f, ", "); - q = 1; - fprintf(f, "semi-end-buf"); - } - if (anchor & ANCHOR_END_LINE) { - if (q) fprintf(f, ", "); - q = 1; - fprintf(f, "end-line"); - } - if (anchor & ANCHOR_ANYCHAR_STAR) { - if (q) fprintf(f, ", "); - q = 1; - fprintf(f, "anychar-star"); - } - if (anchor & ANCHOR_ANYCHAR_STAR_ML) { - if (q) fprintf(f, ", "); - fprintf(f, "anychar-star-pl"); - } - - fprintf(f, "]"); -} - -static void -print_optimize_info(FILE* f, regex_t* reg) -{ - static const char* on[] = { "NONE", "EXACT", "EXACT_BM", "EXACT_BM_NOT_REV", - "EXACT_IC", "MAP" }; - - fprintf(f, "optimize: %s\n", on[reg->optimize]); - fprintf(f, " anchor: "); print_anchor(f, reg->anchor); - if ((reg->anchor & ANCHOR_END_BUF_MASK) != 0) - print_distance_range(f, reg->anchor_dmin, reg->anchor_dmax); - fprintf(f, "\n"); - - if (reg->optimize) { - fprintf(f, " sub anchor: "); print_anchor(f, reg->sub_anchor); - fprintf(f, "\n"); - } - fprintf(f, "\n"); - - if (reg->exact) { - UChar *p; - fprintf(f, "exact: ["); - for (p = reg->exact; p < reg->exact_end; p++) { - fputc(*p, f); - } - fprintf(f, "]: length: %d\n", (reg->exact_end - reg->exact)); - } - else if (reg->optimize & ONIG_OPTIMIZE_MAP) { - int c, i, n = 0; - - for (i = 0; i < ONIG_CHAR_TABLE_SIZE; i++) - if (reg->map[i]) n++; - - fprintf(f, "map: n=%d\n", n); - if (n > 0) { - c = 0; - fputc('[', f); - for (i = 0; i < ONIG_CHAR_TABLE_SIZE; i++) { - if (reg->map[i] != 0) { - if (c > 0) fputs(", ", f); - c++; - if (ONIGENC_MBC_MAXLEN(reg->enc) == 1 && - ONIGENC_IS_CODE_PRINT(reg->enc, (OnigCodePoint )i)) - fputc(i, f); - else - fprintf(f, "%d", i); - } - } - fprintf(f, "]\n"); - } - } -} -#endif /* ONIG_DEBUG */ - - -static void -onig_free_body(regex_t* reg) -{ - if (IS_NOT_NULL(reg->p)) xfree(reg->p); - if (IS_NOT_NULL(reg->exact)) xfree(reg->exact); - if (IS_NOT_NULL(reg->int_map)) xfree(reg->int_map); - if (IS_NOT_NULL(reg->int_map_backward)) xfree(reg->int_map_backward); - if (IS_NOT_NULL(reg->repeat_range)) xfree(reg->repeat_range); - if (IS_NOT_NULL(reg->chain)) onig_free(reg->chain); - -#ifdef USE_NAMED_GROUP - onig_names_free(reg); -#endif -} - -extern void -onig_free(regex_t* reg) -{ - if (IS_NOT_NULL(reg)) { - onig_free_body(reg); - xfree(reg); - } -} - -#define REGEX_TRANSFER(to,from) do {\ - (to)->state = ONIG_STATE_MODIFY;\ - onig_free_body(to);\ - xmemcpy(to, from, sizeof(regex_t));\ - xfree(from);\ -} while (0) - -extern void -onig_transfer(regex_t* to, regex_t* from) -{ - THREAD_ATOMIC_START; - REGEX_TRANSFER(to, from); - THREAD_ATOMIC_END; -} - -#define REGEX_CHAIN_HEAD(reg) do {\ - while (IS_NOT_NULL((reg)->chain)) {\ - (reg) = (reg)->chain;\ - }\ -} while (0) - -extern void -onig_chain_link_add(regex_t* to, regex_t* add) -{ - THREAD_ATOMIC_START; - REGEX_CHAIN_HEAD(to); - to->chain = add; - THREAD_ATOMIC_END; -} - -extern void -onig_chain_reduce(regex_t* reg) -{ - regex_t *head, *prev; - - prev = reg; - head = prev->chain; - if (IS_NOT_NULL(head)) { - reg->state = ONIG_STATE_MODIFY; - while (IS_NOT_NULL(head->chain)) { - prev = head; - head = head->chain; - } - prev->chain = (regex_t* )NULL; - REGEX_TRANSFER(reg, head); - } -} - -#if 0 -extern int -onig_clone(regex_t** to, regex_t* from) -{ - int r, size; - regex_t* reg; - -#ifdef USE_MULTI_THREAD_SYSTEM - if (ONIG_STATE(from) >= ONIG_STATE_NORMAL) { - ONIG_STATE_INC(from); - if (IS_NOT_NULL(from->chain) && ONIG_STATE(reg) == ONIG_STATE_NORMAL) { - onig_chain_reduce(from); - ONIG_STATE_INC(from); - } - } - else { - int n = 0; - while (ONIG_STATE(from) < ONIG_STATE_NORMAL) { - if (++n > THREAD_PASS_LIMIT_COUNT) - return ONIGERR_OVER_THREAD_PASS_LIMIT_COUNT; - THREAD_PASS; - } - ONIG_STATE_INC(from); - } -#endif /* USE_MULTI_THREAD_SYSTEM */ - - r = onig_alloc_init(®, ONIG_OPTION_NONE, ONIGENC_CASE_FOLD_DEFAULT, - from->enc, ONIG_SYNTAX_DEFAULT); - if (r != 0) { - ONIG_STATE_DEC(from); - return r; - } - - xmemcpy(reg, from, sizeof(onig_t)); - reg->chain = (regex_t* )NULL; - reg->state = ONIG_STATE_NORMAL; - - if (from->p) { - reg->p = (UChar* )xmalloc(reg->alloc); - if (IS_NULL(reg->p)) goto mem_error; - xmemcpy(reg->p, from->p, reg->alloc); - } - - if (from->exact) { - reg->exact = (UChar* )xmalloc(from->exact_end - from->exact); - if (IS_NULL(reg->exact)) goto mem_error; - reg->exact_end = reg->exact + (from->exact_end - from->exact); - xmemcpy(reg->exact, from->exact, reg->exact_end - reg->exact); - } - - if (from->int_map) { - size = sizeof(int) * ONIG_CHAR_TABLE_SIZE; - reg->int_map = (int* )xmalloc(size); - if (IS_NULL(reg->int_map)) goto mem_error; - xmemcpy(reg->int_map, from->int_map, size); - } - - if (from->int_map_backward) { - size = sizeof(int) * ONIG_CHAR_TABLE_SIZE; - reg->int_map_backward = (int* )xmalloc(size); - if (IS_NULL(reg->int_map_backward)) goto mem_error; - xmemcpy(reg->int_map_backward, from->int_map_backward, size); - } - -#ifdef USE_NAMED_GROUP - reg->name_table = names_clone(from); /* names_clone is not implemented */ -#endif - - ONIG_STATE_DEC(from); - *to = reg; - return 0; - - mem_error: - ONIG_STATE_DEC(from); - return ONIGERR_MEMORY; -} -#endif - -#ifdef ONIG_DEBUG -static void print_compiled_byte_code_list P_((FILE* f, regex_t* reg)); -#endif -#ifdef ONIG_DEBUG_PARSE_TREE -static void print_tree P_((FILE* f, Node* node)); -#endif - -extern int -onig_compile(regex_t* reg, const UChar* pattern, const UChar* pattern_end, - OnigErrorInfo* einfo) -{ -#define COMPILE_INIT_SIZE 20 - - int r, init_size; - Node* root; - ScanEnv scan_env; -#ifdef USE_SUBEXP_CALL - UnsetAddrList uslist; -#endif - - reg->state = ONIG_STATE_COMPILING; - -#ifdef ONIG_DEBUG - print_enc_string(stderr, reg->enc, pattern, pattern_end); -#endif - - if (reg->alloc == 0) { - init_size = (pattern_end - pattern) * 2; - if (init_size <= 0) init_size = COMPILE_INIT_SIZE; - r = BBUF_INIT(reg, init_size); - if (r != 0) goto end; - } - else - reg->used = 0; - - reg->num_mem = 0; - reg->num_repeat = 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; - -#ifdef USE_NAMED_GROUP - /* mixed use named group and no-named group */ - if (scan_env.num_named > 0 && - IS_SYNTAX_BV(scan_env.syntax, ONIG_SYN_CAPTURE_ONLY_NAMED_GROUP) && - !ONIG_IS_OPTION_ON(reg->options, ONIG_OPTION_CAPTURE_GROUP)) { - if (scan_env.num_named != scan_env.num_mem) - r = disable_noname_group_capture(&root, reg, &scan_env); - else - r = numbered_ref_check(root); - - if (r != 0) goto err; - } -#endif - -#ifdef USE_SUBEXP_CALL - if (scan_env.num_call > 0) { - r = unset_addr_list_init(&uslist, scan_env.num_call); - if (r != 0) goto err; - scan_env.unset_addr_list = &uslist; - r = setup_subexp_call(root, &scan_env); - if (r != 0) goto err_unset; - r = subexp_recursive_check_trav(root, &scan_env); - if (r < 0) goto err_unset; - r = subexp_inf_recursive_check_trav(root, &scan_env); - if (r != 0) goto err_unset; - - reg->num_call = scan_env.num_call; - } - else - reg->num_call = 0; -#endif - - r = setup_tree(root, reg, 0, &scan_env); - if (r != 0) goto err_unset; - -#ifdef ONIG_DEBUG_PARSE_TREE - print_tree(stderr, root); -#endif - - reg->capture_history = scan_env.capture_history; - reg->bt_mem_start = scan_env.bt_mem_start; - reg->bt_mem_start |= reg->capture_history; - if (IS_FIND_CONDITION(reg->options)) - BIT_STATUS_ON_ALL(reg->bt_mem_end); - else { - reg->bt_mem_end = scan_env.bt_mem_end; - 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); - if (r != 0) goto err_unset; -#endif - - if (IS_NOT_NULL(scan_env.mem_nodes_dynamic)) { - xfree(scan_env.mem_nodes_dynamic); - scan_env.mem_nodes_dynamic = (Node** )NULL; - } - - r = compile_tree(root, reg); - if (r == 0) { - r = add_opcode(reg, OP_END); -#ifdef USE_SUBEXP_CALL - if (scan_env.num_call > 0) { - r = unset_addr_list_fix(&uslist, reg); - unset_addr_list_end(&uslist); - if (r) goto err; - } -#endif - - if ((reg->num_repeat != 0) || (reg->bt_mem_end != 0)) - reg->stack_pop_level = STACK_POP_LEVEL_ALL; - else { - if (reg->bt_mem_start != 0) - reg->stack_pop_level = STACK_POP_LEVEL_MEM_START; - else - reg->stack_pop_level = STACK_POP_LEVEL_FREE; - } - } -#ifdef USE_SUBEXP_CALL - else if (scan_env.num_call > 0) { - unset_addr_list_end(&uslist); - } -#endif - onig_node_free(root); - -#ifdef ONIG_DEBUG_COMPILE -#ifdef USE_NAMED_GROUP - onig_print_names(stderr, reg); -#endif - print_compiled_byte_code_list(stderr, reg); -#endif - - end: - reg->state = ONIG_STATE_NORMAL; - return r; - - err_unset: -#ifdef USE_SUBEXP_CALL - if (scan_env.num_call > 0) { - unset_addr_list_end(&uslist); - } -#endif - err: - if (IS_NOT_NULL(scan_env.error)) { - if (IS_NOT_NULL(einfo)) { - einfo->enc = scan_env.enc; - einfo->par = scan_env.error; - einfo->par_end = scan_env.error_end; - } - } - - onig_node_free(root); - if (IS_NOT_NULL(scan_env.mem_nodes_dynamic)) - xfree(scan_env.mem_nodes_dynamic); - return r; -} - -#ifdef USE_RECOMPILE_API -extern int -onig_recompile(regex_t* reg, const UChar* pattern, const UChar* pattern_end, - OnigOptionType option, OnigEncoding enc, OnigSyntaxType* syntax, - OnigErrorInfo* einfo) -{ - int r; - regex_t *new_reg; - - r = onig_new(&new_reg, pattern, pattern_end, option, enc, syntax, einfo); - if (r) return r; - if (ONIG_STATE(reg) == ONIG_STATE_NORMAL) { - onig_transfer(reg, new_reg); - } - else { - onig_chain_link_add(reg, new_reg); - } - return 0; -} -#endif - -static int onig_inited = 0; - -extern int -onig_alloc_init(regex_t** reg, OnigOptionType option, - OnigCaseFoldType case_fold_flag, - OnigEncoding enc, const OnigSyntaxType* syntax) -{ - if (! onig_inited) - onig_init(); - - if (ONIGENC_IS_UNDEF(enc)) - return ONIGERR_DEFAULT_ENCODING_IS_NOT_SETTED; - - if ((option & (ONIG_OPTION_DONT_CAPTURE_GROUP|ONIG_OPTION_CAPTURE_GROUP)) - == (ONIG_OPTION_DONT_CAPTURE_GROUP|ONIG_OPTION_CAPTURE_GROUP)) { - return ONIGERR_INVALID_COMBINATION_OF_OPTIONS; - } - - *reg = (regex_t* )xmalloc(sizeof(regex_t)); - if (IS_NULL(*reg)) return ONIGERR_MEMORY; - (*reg)->state = ONIG_STATE_MODIFY; - - if ((option & ONIG_OPTION_NEGATE_SINGLELINE) != 0) { - option |= syntax->options; - option &= ~ONIG_OPTION_SINGLELINE; - } - else - option |= syntax->options; - - (*reg)->enc = enc; - (*reg)->options = option; - (*reg)->syntax = syntax; - (*reg)->optimize = 0; - (*reg)->exact = (UChar* )NULL; - (*reg)->int_map = (int* )NULL; - (*reg)->int_map_backward = (int* )NULL; - (*reg)->chain = (regex_t* )NULL; - - (*reg)->p = (UChar* )NULL; - (*reg)->alloc = 0; - (*reg)->used = 0; - (*reg)->name_table = (void* )NULL; - - (*reg)->case_fold_flag = case_fold_flag; - return 0; -} - -extern int -onig_new(regex_t** reg, const UChar* pattern, const UChar* pattern_end, - OnigOptionType option, OnigEncoding enc, const OnigSyntaxType* syntax, - OnigErrorInfo* einfo) -{ - int r; - - if (IS_NOT_NULL(einfo)) einfo->par = (UChar* )NULL; - - r = onig_alloc_init(reg, option, ONIGENC_CASE_FOLD_DEFAULT, - enc, syntax); - if (r) return r; - - r = onig_compile(*reg, pattern, pattern_end, einfo); - if (r) { - onig_free(*reg); - *reg = NULL; - } - return r; -} - -extern int -onig_init(void) -{ - if (onig_inited != 0) - return 0; - - THREAD_SYSTEM_INIT; - THREAD_ATOMIC_START; - - onig_inited = 1; - - onigenc_init(); - /* onigenc_set_default_caseconv_table((UChar* )0); */ - -#ifdef ONIG_DEBUG_STATISTICS - onig_statistics_init(); -#endif - - THREAD_ATOMIC_END; - return 0; -} - - -extern int -onig_end(void) -{ - THREAD_ATOMIC_START; - -#ifdef ONIG_DEBUG_STATISTICS - onig_print_statistics(stderr); -#endif - -#ifdef USE_SHARED_CCLASS_TABLE - onig_free_shared_cclass_table(); -#endif - -#ifdef USE_PARSE_TREE_NODE_RECYCLE - onig_free_node_list(); -#endif - - onig_inited = 0; - - THREAD_ATOMIC_END; - THREAD_SYSTEM_END; - return 0; -} - -extern int -onig_is_in_code_range(const UChar* p, OnigCodePoint code) -{ - OnigCodePoint n, *data; - OnigCodePoint low, high, x; - - GET_CODE_POINT(n, p); - data = (OnigCodePoint* )p; - data++; - - for (low = 0, high = n; low < high; ) { - x = (low + high) >> 1; - if (code > data[x * 2 + 1]) - low = x + 1; - else - high = x; - } - - return ((low < n && code >= data[low * 2]) ? 1 : 0); -} - -extern int -onig_is_code_in_cc_len(int elen, OnigCodePoint code, CClassNode* cc) -{ - int found; - - if (elen > 1 || (code >= SINGLE_BYTE_SIZE)) { - if (IS_NULL(cc->mbuf)) { - found = 0; - } - else { - found = (onig_is_in_code_range(cc->mbuf->p, code) != 0 ? 1 : 0); - } - } - else { - found = (BITSET_AT(cc->bs, code) == 0 ? 0 : 1); - } - - if (IS_NCCLASS_NOT(cc)) - return !found; - else - return found; -} - -extern int -onig_is_code_in_cc(OnigEncoding enc, OnigCodePoint code, CClassNode* cc) -{ - int len; - - if (ONIGENC_MBC_MINLEN(enc) > 1) { - len = 2; - } - else { - len = ONIGENC_CODE_TO_MBCLEN(enc, code); - } - return onig_is_code_in_cc_len(len, code, cc); -} - - -#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_EXACT1, "exact1", ARG_SPECIAL }, - { OP_EXACT2, "exact2", ARG_SPECIAL }, - { OP_EXACT3, "exact3", ARG_SPECIAL }, - { OP_EXACT4, "exact4", ARG_SPECIAL }, - { OP_EXACT5, "exact5", ARG_SPECIAL }, - { OP_EXACTN, "exactn", ARG_SPECIAL }, - { OP_EXACTMB2N1, "exactmb2-n1", ARG_SPECIAL }, - { OP_EXACTMB2N2, "exactmb2-n2", ARG_SPECIAL }, - { OP_EXACTMB2N3, "exactmb2-n3", ARG_SPECIAL }, - { OP_EXACTMB2N, "exactmb2-n", ARG_SPECIAL }, - { OP_EXACTMB3N, "exactmb3n" , ARG_SPECIAL }, - { OP_EXACTMBN, "exactmbn", ARG_SPECIAL }, - { OP_EXACT1_IC, "exact1-ic", ARG_SPECIAL }, - { OP_EXACTN_IC, "exactn-ic", ARG_SPECIAL }, - { OP_CCLASS, "cclass", ARG_SPECIAL }, - { OP_CCLASS_MB, "cclass-mb", ARG_SPECIAL }, - { OP_CCLASS_MIX, "cclass-mix", ARG_SPECIAL }, - { OP_CCLASS_NOT, "cclass-not", ARG_SPECIAL }, - { OP_CCLASS_MB_NOT, "cclass-mb-not", ARG_SPECIAL }, - { OP_CCLASS_MIX_NOT, "cclass-mix-not", ARG_SPECIAL }, - { OP_CCLASS_NODE, "cclass-node", ARG_SPECIAL }, - { OP_ANYCHAR, "anychar", ARG_NON }, - { OP_ANYCHAR_ML, "anychar-ml", ARG_NON }, - { OP_ANYCHAR_STAR, "anychar*", 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_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_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_WITH_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_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 }, - { -1, "", ARG_NON } -}; - -static char* -op2name(int opcode) -{ - int i; - - for (i = 0; OnigOpInfo[i].opcode >= 0; i++) { - if (opcode == OnigOpInfo[i].opcode) - return OnigOpInfo[i].name; - } - return ""; -} - -static int -op2arg_type(int opcode) -{ - int i; - - for (i = 0; OnigOpInfo[i].opcode >= 0; i++) { - if (opcode == OnigOpInfo[i].opcode) - return OnigOpInfo[i].arg_type; - } - return ARG_SPECIAL; -} - -static void -Indent(FILE* f, int indent) -{ - int i; - for (i = 0; i < indent; i++) putc(' ', f); -} - -static void -p_string(FILE* f, int len, UChar* s) -{ - fputs(":", f); - while (len-- > 0) { fputc(*s++, f); } -} - -static void -p_len_string(FILE* f, LengthType len, int mb_len, UChar* s) -{ - int x = len * mb_len; - - fprintf(f, ":%d:", len); - while (x-- > 0) { fputc(*s++, f); } -} - -extern void -onig_print_compiled_byte_code(FILE* f, UChar* bp, UChar** nextp, - OnigEncoding enc) -{ - int i, n, arg_type; - RelAddrType addr; - LengthType len; - MemNumType mem; - StateCheckNumType scn; - OnigCodePoint code; - UChar *q; - - fprintf(f, "[%s", op2name(*bp)); - arg_type = op2arg_type(*bp); - if (arg_type != ARG_SPECIAL) { - bp++; - switch (arg_type) { - case ARG_NON: - break; - case ARG_RELADDR: - GET_RELADDR_INC(addr, bp); - fprintf(f, ":(%d)", addr); - break; - case ARG_ABSADDR: - GET_ABSADDR_INC(addr, bp); - fprintf(f, ":(%d)", addr); - break; - case ARG_LENGTH: - GET_LENGTH_INC(len, bp); - fprintf(f, ":%d", len); - break; - case ARG_MEMNUM: - mem = *((MemNumType* )bp); - bp += SIZE_MEMNUM; - fprintf(f, ":%d", mem); - break; - case ARG_OPTION: - { - OnigOptionType option = *((OnigOptionType* )bp); - bp += SIZE_OPTION; - fprintf(f, ":%d", option); - } - break; - - case ARG_STATE_CHECK: - scn = *((StateCheckNumType* )bp); - bp += SIZE_STATE_CHECK_NUM; - fprintf(f, ":%d", scn); - break; - } - } - else { - switch (*bp++) { - case OP_EXACT1: - case OP_ANYCHAR_STAR_PEEK_NEXT: - case OP_ANYCHAR_ML_STAR_PEEK_NEXT: - p_string(f, 1, bp++); break; - case OP_EXACT2: - p_string(f, 2, bp); bp += 2; break; - case OP_EXACT3: - p_string(f, 3, bp); bp += 3; break; - case OP_EXACT4: - p_string(f, 4, bp); bp += 4; break; - case OP_EXACT5: - p_string(f, 5, bp); bp += 5; break; - case OP_EXACTN: - GET_LENGTH_INC(len, bp); - p_len_string(f, len, 1, bp); - bp += len; - break; - - case OP_EXACTMB2N1: - p_string(f, 2, bp); bp += 2; break; - case OP_EXACTMB2N2: - p_string(f, 4, bp); bp += 4; break; - case OP_EXACTMB2N3: - p_string(f, 6, bp); bp += 6; break; - case OP_EXACTMB2N: - GET_LENGTH_INC(len, bp); - p_len_string(f, len, 2, bp); - bp += len * 2; - break; - case OP_EXACTMB3N: - GET_LENGTH_INC(len, bp); - p_len_string(f, len, 3, bp); - bp += len * 3; - break; - case OP_EXACTMBN: - { - int mb_len; - - GET_LENGTH_INC(mb_len, bp); - GET_LENGTH_INC(len, bp); - fprintf(f, ":%d:%d:", mb_len, len); - n = len * mb_len; - while (n-- > 0) { fputc(*bp++, f); } - } - break; - - case OP_EXACT1_IC: - len = enclen(enc, bp); - p_string(f, len, bp); - bp += len; - break; - case OP_EXACTN_IC: - GET_LENGTH_INC(len, bp); - p_len_string(f, len, 1, bp); - bp += len; - break; - - case OP_CCLASS: - n = bitset_on_num((BitSetRef )bp); - bp += SIZE_BITSET; - fprintf(f, ":%d", n); - break; - - case OP_CCLASS_NOT: - n = bitset_on_num((BitSetRef )bp); - bp += SIZE_BITSET; - fprintf(f, ":%d", n); - break; - - case OP_CCLASS_MB: - case OP_CCLASS_MB_NOT: - GET_LENGTH_INC(len, bp); - q = bp; -#ifndef PLATFORM_UNALIGNED_WORD_ACCESS - ALIGNMENT_RIGHT(q); -#endif - GET_CODE_POINT(code, q); - bp += len; - fprintf(f, ":%d:%d", (int )code, len); - break; - - case OP_CCLASS_MIX: - case OP_CCLASS_MIX_NOT: - n = bitset_on_num((BitSetRef )bp); - bp += SIZE_BITSET; - GET_LENGTH_INC(len, bp); - q = bp; -#ifndef PLATFORM_UNALIGNED_WORD_ACCESS - ALIGNMENT_RIGHT(q); -#endif - GET_CODE_POINT(code, q); - bp += len; - fprintf(f, ":%d:%d:%d", n, (int )code, len); - break; - - case OP_CCLASS_NODE: - { - CClassNode *cc; - - GET_POINTER_INC(cc, bp); - n = bitset_on_num(cc->bs); - fprintf(f, ":%u:%d", (unsigned int )cc, n); - } - break; - - case OP_BACKREFN_IC: - mem = *((MemNumType* )bp); - bp += SIZE_MEMNUM; - fprintf(f, ":%d", mem); - break; - - case OP_BACKREF_MULTI_IC: - case OP_BACKREF_MULTI: - fputs(" ", f); - GET_LENGTH_INC(len, bp); - for (i = 0; i < len; i++) { - GET_MEMNUM_INC(mem, bp); - if (i > 0) fputs(", ", f); - fprintf(f, "%d", mem); - } - break; - - case OP_BACKREF_WITH_LEVEL: - { - OnigOptionType option; - LengthType level; - - GET_OPTION_INC(option, bp); - fprintf(f, ":%d", option); - GET_LENGTH_INC(level, bp); - fprintf(f, ":%d", level); - - fputs(" ", f); - GET_LENGTH_INC(len, bp); - for (i = 0; i < len; i++) { - GET_MEMNUM_INC(mem, bp); - if (i > 0) fputs(", ", f); - fprintf(f, "%d", mem); - } - } - break; - - case OP_REPEAT: - case OP_REPEAT_NG: - { - mem = *((MemNumType* )bp); - bp += SIZE_MEMNUM; - addr = *((RelAddrType* )bp); - bp += SIZE_RELADDR; - fprintf(f, ":%d:%d", mem, addr); - } - break; - - case OP_PUSH_OR_JUMP_EXACT1: - case OP_PUSH_IF_PEEK_NEXT: - addr = *((RelAddrType* )bp); - bp += SIZE_RELADDR; - fprintf(f, ":(%d)", addr); - p_string(f, 1, bp); - bp += 1; - break; - - case OP_LOOK_BEHIND: - GET_LENGTH_INC(len, bp); - fprintf(f, ":%d", len); - break; - - case OP_PUSH_LOOK_BEHIND_NOT: - GET_RELADDR_INC(addr, bp); - GET_LENGTH_INC(len, bp); - 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; - - default: - fprintf(stderr, "onig_print_compiled_byte_code: undefined code %d\n", - *--bp); - } - } - fputs("]", f); - if (nextp) *nextp = bp; -} - -static void -print_compiled_byte_code_list(FILE* f, regex_t* reg) -{ - int ncode; - UChar* bp = reg->p; - UChar* end = reg->p + reg->used; - - fprintf(f, "code length: %d\n", reg->used); - - ncode = 0; - while (bp < end) { - ncode++; - if (bp > reg->p) { - if (ncode % 5 == 0) - fprintf(f, "\n"); - else - fputs(" ", f); - } - onig_print_compiled_byte_code(f, bp, &bp, reg->enc); - } - - fprintf(f, "\n"); -} - -static void -print_indent_tree(FILE* f, Node* node, int indent) -{ - int i, type; - int add = 3; - UChar* p; - - Indent(f, indent); - if (IS_NULL(node)) { - fprintf(f, "ERROR: null node!!!\n"); - exit (0); - } - - type = NTYPE(node); - switch (type) { - case NT_LIST: - case NT_ALT: - if (NTYPE(node) == NT_LIST) - fprintf(f, "<list:%x>\n", (int )node); - else - fprintf(f, "<alt:%x>\n", (int )node); - - print_indent_tree(f, NCAR(node), indent + add); - while (IS_NOT_NULL(node = NCDR(node))) { - if (NTYPE(node) != type) { - fprintf(f, "ERROR: list/alt right is not a cons. %d\n", NTYPE(node)); - exit(0); - } - print_indent_tree(f, NCAR(node), indent + add); - } - break; - - case NT_STR: - fprintf(f, "<string%s:%x>", - (NSTRING_IS_RAW(node) ? "-raw" : ""), (int )node); - for (p = NSTR(node)->s; p < NSTR(node)->end; p++) { - if (*p >= 0x20 && *p < 0x7f) - fputc(*p, f); - else { - fprintf(f, " 0x%02x", *p); - } - } - break; - - case NT_CCLASS: - fprintf(f, "<cclass:%x>", (int )node); - if (IS_NCCLASS_NOT(NCCLASS(node))) fputs(" not", f); - if (NCCLASS(node)->mbuf) { - BBuf* bbuf = NCCLASS(node)->mbuf; - for (i = 0; i < bbuf->used; i++) { - if (i > 0) fprintf(f, ","); - fprintf(f, "%0x", bbuf->p[i]); - } - } - break; - - case NT_CTYPE: - fprintf(f, "<ctype:%x> ", (int )node); - switch (NCTYPE(node)->ctype) { - case ONIGENC_CTYPE_WORD: - if (NCTYPE(node)->not != 0) - fputs("not word", f); - else - fputs("word", f); - break; - - default: - fprintf(f, "ERROR: undefined ctype.\n"); - exit(0); - } - break; - - case NT_CANY: - fprintf(f, "<anychar:%x>", (int )node); - break; - - case NT_ANCHOR: - fprintf(f, "<anchor:%x> ", (int )node); - switch (NANCHOR(node)->type) { - case ANCHOR_BEGIN_BUF: fputs("begin buf", f); break; - case ANCHOR_END_BUF: fputs("end buf", f); break; - case ANCHOR_BEGIN_LINE: fputs("begin line", f); break; - case ANCHOR_END_LINE: fputs("end line", f); break; - case ANCHOR_SEMI_END_BUF: fputs("semi end buf", f); break; - case ANCHOR_BEGIN_POSITION: fputs("begin position", f); break; - - case ANCHOR_WORD_BOUND: fputs("word bound", f); break; - case ANCHOR_NOT_WORD_BOUND: fputs("not word bound", f); break; -#ifdef USE_WORD_BEGIN_END - case ANCHOR_WORD_BEGIN: fputs("word begin", f); break; - case ANCHOR_WORD_END: fputs("word end", f); break; -#endif - case ANCHOR_PREC_READ: fputs("prec read", f); break; - case ANCHOR_PREC_READ_NOT: fputs("prec read not", f); break; - case ANCHOR_LOOK_BEHIND: fputs("look_behind", f); break; - case ANCHOR_LOOK_BEHIND_NOT: fputs("look_behind_not",f); break; - - default: - fprintf(f, "ERROR: undefined anchor type.\n"); - break; - } - break; - - case NT_BREF: - { - int* p; - BRefNode* br = NBREF(node); - p = BACKREFS_P(br); - fprintf(f, "<backref:%x>", (int )node); - for (i = 0; i < br->back_num; i++) { - if (i > 0) fputs(", ", f); - fprintf(f, "%d", p[i]); - } - } - break; - -#ifdef USE_SUBEXP_CALL - case NT_CALL: - { - CallNode* cn = NCALL(node); - fprintf(f, "<call:%x>", (int )node); - p_string(f, cn->name_end - cn->name, cn->name); - } - break; -#endif - - case NT_QTFR: - fprintf(f, "<quantifier:%x>{%d,%d}%s\n", (int )node, - NQTFR(node)->lower, NQTFR(node)->upper, - (NQTFR(node)->greedy ? "" : "?")); - print_indent_tree(f, NQTFR(node)->target, indent + add); - break; - - case NT_ENCLOSE: - fprintf(f, "<enclose:%x> ", (int )node); - switch (NENCLOSE(node)->type) { - case ENCLOSE_OPTION: - fprintf(f, "option:%d\n", NENCLOSE(node)->option); - print_indent_tree(f, NENCLOSE(node)->target, indent + add); - break; - case ENCLOSE_MEMORY: - fprintf(f, "memory:%d", NENCLOSE(node)->regnum); - break; - case ENCLOSE_STOP_BACKTRACK: - fprintf(f, "stop-bt"); - break; - - default: - break; - } - fprintf(f, "\n"); - print_indent_tree(f, NENCLOSE(node)->target, indent + add); - break; - - default: - fprintf(f, "print_indent_tree: undefined node type %d\n", NTYPE(node)); - break; - } - - if (type != NT_LIST && type != NT_ALT && type != NT_QTFR && - type != NT_ENCLOSE) - fprintf(f, "\n"); - fflush(f); -} -#endif /* ONIG_DEBUG */ - -#ifdef ONIG_DEBUG_PARSE_TREE -static void -print_tree(FILE* f, Node* node) -{ - print_indent_tree(f, node, 0); -} -#endif |