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ruby--ruby/regexec.c

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/**********************************************************************
regexec.c - Onigmo (Oniguruma-mod) (regular expression library)
**********************************************************************/
/*-
* Copyright (c) 2002-2008 K.Kosako <sndgk393 AT ybb DOT ne DOT jp>
* Copyright (c) 2011-2016 K.Takata <kentkt AT csc 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 "regint.h"
#ifdef RUBY
# undef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE
#else
# define USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE
#endif
#ifndef USE_TOKEN_THREADED_VM
# ifdef __GNUC__
# define USE_TOKEN_THREADED_VM 1
# else
# define USE_TOKEN_THREADED_VM 0
# endif
#endif
#ifdef RUBY
# define ENC_DUMMY_FLAG (1<<24)
static inline int
rb_enc_asciicompat(OnigEncoding enc)
{
return ONIGENC_MBC_MINLEN(enc)==1 && !((enc)->ruby_encoding_index & ENC_DUMMY_FLAG);
}
# undef ONIGENC_IS_MBC_ASCII_WORD
# define ONIGENC_IS_MBC_ASCII_WORD(enc,s,end) \
(rb_enc_asciicompat(enc) ? (ISALNUM(*s) || *s=='_') : \
onigenc_ascii_is_code_ctype( \
ONIGENC_MBC_TO_CODE(enc,s,end),ONIGENC_CTYPE_WORD,enc))
#endif /* RUBY */
#ifdef USE_CRNL_AS_LINE_TERMINATOR
# define ONIGENC_IS_MBC_CRNL(enc,p,end) \
(ONIGENC_MBC_TO_CODE(enc,p,end) == 13 && \
ONIGENC_MBC_TO_CODE(enc,(p+enclen(enc,p,end)),end) == 10)
# define ONIGENC_IS_MBC_NEWLINE_EX(enc,p,start,end,option,check_prev) \
is_mbc_newline_ex((enc),(p),(start),(end),(option),(check_prev))
static int
is_mbc_newline_ex(OnigEncoding enc, const UChar *p, const UChar *start,
const UChar *end, OnigOptionType option, int check_prev)
{
if (IS_NEWLINE_CRLF(option)) {
if (ONIGENC_MBC_TO_CODE(enc, p, end) == 0x0a) {
if (check_prev) {
const UChar *prev = onigenc_get_prev_char_head(enc, start, p, end);
if ((prev != NULL) && ONIGENC_MBC_TO_CODE(enc, prev, end) == 0x0d)
return 0;
else
return 1;
}
else
return 1;
}
else {
const UChar *pnext = p + enclen(enc, p, end);
if (pnext < end &&
ONIGENC_MBC_TO_CODE(enc, p, end) == 0x0d &&
ONIGENC_MBC_TO_CODE(enc, pnext, end) == 0x0a)
return 1;
if (ONIGENC_IS_MBC_NEWLINE(enc, p, end))
return 1;
return 0;
}
}
else {
return ONIGENC_IS_MBC_NEWLINE(enc, p, end);
}
}
#else /* USE_CRNL_AS_LINE_TERMINATOR */
# define ONIGENC_IS_MBC_NEWLINE_EX(enc,p,start,end,option,check_prev) \
ONIGENC_IS_MBC_NEWLINE((enc), (p), (end))
#endif /* USE_CRNL_AS_LINE_TERMINATOR */
#ifdef USE_CAPTURE_HISTORY
static void history_tree_free(OnigCaptureTreeNode* node);
static void
history_tree_clear(OnigCaptureTreeNode* node)
{
int i;
if (IS_NOT_NULL(node)) {
for (i = 0; i < node->num_childs; i++) {
if (IS_NOT_NULL(node->childs[i])) {
history_tree_free(node->childs[i]);
}
}
for (i = 0; i < node->allocated; i++) {
node->childs[i] = (OnigCaptureTreeNode* )0;
}
node->num_childs = 0;
node->beg = ONIG_REGION_NOTPOS;
node->end = ONIG_REGION_NOTPOS;
node->group = -1;
xfree(node->childs);
node->childs = (OnigCaptureTreeNode** )0;
}
}
static void
history_tree_free(OnigCaptureTreeNode* node)
{
history_tree_clear(node);
xfree(node);
}
static void
history_root_free(OnigRegion* r)
{
if (IS_NOT_NULL(r->history_root)) {
history_tree_free(r->history_root);
r->history_root = (OnigCaptureTreeNode* )0;
}
}
static OnigCaptureTreeNode*
history_node_new(void)
{
OnigCaptureTreeNode* node;
node = (OnigCaptureTreeNode* )xmalloc(sizeof(OnigCaptureTreeNode));
CHECK_NULL_RETURN(node);
node->childs = (OnigCaptureTreeNode** )0;
node->allocated = 0;
node->num_childs = 0;
node->group = -1;
node->beg = ONIG_REGION_NOTPOS;
node->end = ONIG_REGION_NOTPOS;
return node;
}
static int
history_tree_add_child(OnigCaptureTreeNode* parent, OnigCaptureTreeNode* child)
{
# define HISTORY_TREE_INIT_ALLOC_SIZE 8
if (parent->num_childs >= parent->allocated) {
int n, i;
if (IS_NULL(parent->childs)) {
n = HISTORY_TREE_INIT_ALLOC_SIZE;
parent->childs =
(OnigCaptureTreeNode** )xmalloc(sizeof(OnigCaptureTreeNode*) * n);
CHECK_NULL_RETURN_MEMERR(parent->childs);
}
else {
OnigCaptureTreeNode** tmp;
n = parent->allocated * 2;
tmp =
(OnigCaptureTreeNode** )xrealloc(parent->childs,
sizeof(OnigCaptureTreeNode*) * n);
if (tmp == 0) {
history_tree_clear(parent);
return ONIGERR_MEMORY;
}
parent->childs = tmp;
}
for (i = parent->allocated; i < n; i++) {
parent->childs[i] = (OnigCaptureTreeNode* )0;
}
parent->allocated = n;
}
parent->childs[parent->num_childs] = child;
parent->num_childs++;
return 0;
}
static OnigCaptureTreeNode*
history_tree_clone(OnigCaptureTreeNode* node)
{
int i, r;
OnigCaptureTreeNode *clone, *child;
clone = history_node_new();
CHECK_NULL_RETURN(clone);
clone->beg = node->beg;
clone->end = node->end;
for (i = 0; i < node->num_childs; i++) {
child = history_tree_clone(node->childs[i]);
if (IS_NULL(child)) {
history_tree_free(clone);
return (OnigCaptureTreeNode* )0;
}
r = history_tree_add_child(clone, child);
if (r != 0) {
history_tree_free(child);
history_tree_free(clone);
return (OnigCaptureTreeNode* )0;
}
}
return clone;
}
extern OnigCaptureTreeNode*
onig_get_capture_tree(OnigRegion* region)
{
return region->history_root;
}
#endif /* USE_CAPTURE_HISTORY */
#ifdef USE_CACHE_MATCH_OPT
/* count number of jump-like opcodes for allocation of cache memory. */
/* return -1 if we cannot optimize the regex matching by using cache. */
static long count_num_cache_opcode(regex_t* reg, long* table_size)
{
long num = 0;
UChar* p = reg->p;
UChar* pend = p + reg->used;
LengthType len;
MemNumType mem;
MemNumType current_mem = -1;
long current_mem_num = 0;
OnigEncoding enc = reg->enc;
while (p < pend) {
switch (*p++) {
case OP_FINISH:
case OP_END:
break;
case OP_EXACT1: p++; break;
case OP_EXACT2: p += 2; break;
case OP_EXACT3: p += 3; break;
case OP_EXACT4: p += 4; break;
case OP_EXACT5: p += 5; break;
case OP_EXACTN:
GET_LENGTH_INC(len, p); p += len; break;
case OP_EXACTMB2N1: p += 2; break;
case OP_EXACTMB2N2: p += 4; break;
case OP_EXACTMB2N3: p += 6; break;
case OP_EXACTMB2N:
GET_LENGTH_INC(len, p); p += len * 2; break;
case OP_EXACTMB3N:
GET_LENGTH_INC(len, p); p += len * 3; break;
case OP_EXACTMBN:
{
int mb_len;
GET_LENGTH_INC(mb_len, p);
GET_LENGTH_INC(len, p);
p += mb_len * len;
}
break;
case OP_EXACT1_IC:
len = enclen(enc, p, pend); p += len; break;
case OP_EXACTN_IC:
GET_LENGTH_INC(len, p); p += len; break;
case OP_CCLASS:
case OP_CCLASS_NOT:
p += SIZE_BITSET; break;
case OP_CCLASS_MB:
case OP_CCLASS_MB_NOT:
GET_LENGTH_INC(len, p); p += len; break;
case OP_CCLASS_MIX:
case OP_CCLASS_MIX_NOT:
p += SIZE_BITSET;
GET_LENGTH_INC(len, p);
p += len;
break;
case OP_ANYCHAR:
case OP_ANYCHAR_ML:
break;
case OP_ANYCHAR_STAR:
case OP_ANYCHAR_ML_STAR:
num++; *table_size += 1; break;
case OP_ANYCHAR_STAR_PEEK_NEXT:
case OP_ANYCHAR_ML_STAR_PEEK_NEXT:
p++; num++; *table_size += 1; break;
case OP_WORD:
case OP_NOT_WORD:
case OP_WORD_BOUND:
case OP_NOT_WORD_BOUND:
case OP_WORD_BEGIN:
case OP_WORD_END:
break;
case OP_ASCII_WORD:
case OP_NOT_ASCII_WORD:
case OP_ASCII_WORD_BOUND:
case OP_NOT_ASCII_WORD_BOUND:
case OP_ASCII_WORD_BEGIN:
case OP_ASCII_WORD_END:
break;
case OP_BEGIN_BUF:
case OP_END_BUF:
case OP_BEGIN_LINE:
case OP_END_LINE:
case OP_SEMI_END_BUF:
case OP_BEGIN_POSITION:
break;
case OP_BACKREF1:
case OP_BACKREF2:
case OP_BACKREFN:
case OP_BACKREFN_IC:
case OP_BACKREF_MULTI:
case OP_BACKREF_MULTI_IC:
case OP_BACKREF_WITH_LEVEL:
return NUM_CACHE_OPCODE_FAIL;
case OP_MEMORY_START:
case OP_MEMORY_START_PUSH:
case OP_MEMORY_END_PUSH:
case OP_MEMORY_END_PUSH_REC:
case OP_MEMORY_END:
case OP_MEMORY_END_REC:
p += SIZE_MEMNUM; break;
case OP_KEEP:
break;
case OP_FAIL:
break;
case OP_JUMP:
p += SIZE_RELADDR;
break;
case OP_PUSH:
p += SIZE_RELADDR;
num++;
*table_size += 1;
break;
case OP_POP:
break;
case OP_PUSH_OR_JUMP_EXACT1:
case OP_PUSH_IF_PEEK_NEXT:
p += SIZE_RELADDR + 1; num++; *table_size += 1; break;
case OP_REPEAT:
case OP_REPEAT_NG:
if (current_mem != -1) {
// A nested OP_REPEAT is not yet supported.
return NUM_CACHE_OPCODE_FAIL;
}
GET_MEMNUM_INC(mem, p);
p += SIZE_RELADDR;
if (reg->repeat_range[mem].lower == 0) {
num++;
*table_size += 1;
}
reg->repeat_range[mem].base_num = num;
current_mem = mem;
current_mem_num = num;
break;
case OP_REPEAT_INC:
case OP_REPEAT_INC_NG:
GET_MEMNUM_INC(mem, p);
if (mem != current_mem) {
// A lone or invalid OP_REPEAT_INC is found.
return NUM_CACHE_OPCODE_FAIL;
}
{
long inner_num = num - current_mem_num;
OnigRepeatRange *repeat_range = &reg->repeat_range[mem];
repeat_range->inner_num = inner_num;
num -= inner_num;
num += inner_num * repeat_range->lower + (inner_num + 1) * (repeat_range->upper == 0x7fffffff ? 1 : repeat_range->upper - repeat_range->lower);
if (repeat_range->lower < repeat_range->upper) {
*table_size += 1;
}
current_mem = -1;
current_mem_num = 0;
}
break;
case OP_REPEAT_INC_SG:
case OP_REPEAT_INC_NG_SG:
// TODO: Support nested OP_REPEAT.
return NUM_CACHE_OPCODE_FAIL;
case OP_NULL_CHECK_START:
case OP_NULL_CHECK_END:
case OP_NULL_CHECK_END_MEMST:
case OP_NULL_CHECK_END_MEMST_PUSH:
p += SIZE_MEMNUM; break;
case OP_PUSH_POS:
case OP_POP_POS:
case OP_PUSH_POS_NOT:
case OP_FAIL_POS:
case OP_PUSH_STOP_BT:
case OP_POP_STOP_BT:
case OP_LOOK_BEHIND:
case OP_PUSH_LOOK_BEHIND_NOT:
case OP_FAIL_LOOK_BEHIND_NOT:
case OP_PUSH_ABSENT_POS:
case OP_ABSENT_END:
case OP_ABSENT:
return NUM_CACHE_OPCODE_FAIL;
case OP_CALL:
case OP_RETURN:
return NUM_CACHE_OPCODE_FAIL;
case OP_CONDITION:
return NUM_CACHE_OPCODE_FAIL;
case OP_STATE_CHECK_PUSH:
case OP_STATE_CHECK_PUSH_OR_JUMP:
case OP_STATE_CHECK:
case OP_STATE_CHECK_ANYCHAR_STAR:
case OP_STATE_CHECK_ANYCHAR_ML_STAR:
return NUM_CACHE_OPCODE_FAIL;
case OP_SET_OPTION_PUSH:
case OP_SET_OPTION:
p += SIZE_OPTION;
break;
}
}
return num;
}
static void init_cache_index_table(regex_t* reg, OnigCacheIndex *table)
{
UChar* pbegin;
UChar* p = reg->p;
UChar* pend = p + reg->used;
LengthType len;
MemNumType mem;
MemNumType current_mem = -1;
long num = 0;
long current_mem_num = 0;
OnigEncoding enc = reg->enc;
while (p < pend) {
pbegin = p;
switch (*p++) {
case OP_FINISH:
case OP_END:
break;
case OP_EXACT1: p++; break;
case OP_EXACT2: p += 2; break;
case OP_EXACT3: p += 3; break;
case OP_EXACT4: p += 4; break;
case OP_EXACT5: p += 5; break;
case OP_EXACTN:
GET_LENGTH_INC(len, p); p += len; break;
case OP_EXACTMB2N1: p += 2; break;
case OP_EXACTMB2N2: p += 4; break;
case OP_EXACTMB2N3: p += 6; break;
case OP_EXACTMB2N:
GET_LENGTH_INC(len, p); p += len * 2; break;
case OP_EXACTMB3N:
GET_LENGTH_INC(len, p); p += len * 3; break;
case OP_EXACTMBN:
{
int mb_len;
GET_LENGTH_INC(mb_len, p);
GET_LENGTH_INC(len, p);
p += mb_len * len;
}
break;
case OP_EXACT1_IC:
len = enclen(enc, p, pend); p += len; break;
case OP_EXACTN_IC:
GET_LENGTH_INC(len, p); p += len; break;
case OP_CCLASS:
case OP_CCLASS_NOT:
p += SIZE_BITSET; break;
case OP_CCLASS_MB_NOT:
GET_LENGTH_INC(len, p); p += len; break;
case OP_CCLASS_MIX:
case OP_CCLASS_MIX_NOT:
p += SIZE_BITSET;
GET_LENGTH_INC(len, p);
p += len;
break;
case OP_ANYCHAR:
case OP_ANYCHAR_ML:
break;
case OP_ANYCHAR_STAR:
case OP_ANYCHAR_ML_STAR:
table->addr = pbegin;
table->num = num - current_mem_num;
table->outer_repeat = current_mem;
num++;
table++;
break;
case OP_ANYCHAR_STAR_PEEK_NEXT:
case OP_ANYCHAR_ML_STAR_PEEK_NEXT:
p++;
table->addr = pbegin;
table->num = num - current_mem_num;
table->outer_repeat = current_mem;
num++;
table++;
break;
case OP_WORD:
case OP_NOT_WORD:
case OP_WORD_BOUND:
case OP_NOT_WORD_BOUND:
case OP_WORD_BEGIN:
case OP_WORD_END:
break;
case OP_ASCII_WORD:
case OP_NOT_ASCII_WORD:
case OP_ASCII_WORD_BOUND:
case OP_NOT_ASCII_WORD_BOUND:
case OP_ASCII_WORD_BEGIN:
case OP_ASCII_WORD_END:
break;
case OP_BEGIN_BUF:
case OP_END_BUF:
case OP_BEGIN_LINE:
case OP_END_LINE:
case OP_SEMI_END_BUF:
case OP_BEGIN_POSITION:
break;
case OP_BACKREF1:
case OP_BACKREF2:
case OP_BACKREFN:
case OP_BACKREFN_IC:
case OP_BACKREF_MULTI:
case OP_BACKREF_MULTI_IC:
case OP_BACKREF_WITH_LEVEL:
return;
case OP_MEMORY_START:
case OP_MEMORY_START_PUSH:
case OP_MEMORY_END_PUSH:
case OP_MEMORY_END_PUSH_REC:
case OP_MEMORY_END:
case OP_MEMORY_END_REC:
p += SIZE_MEMNUM; break;
case OP_KEEP:
break;
case OP_FAIL:
break;
case OP_JUMP:
p += SIZE_RELADDR;
break;
case OP_PUSH:
p += SIZE_RELADDR;
table->addr = pbegin;
table->num = num - current_mem_num;
table->outer_repeat = current_mem;
num++;
table++;
break;
case OP_POP:
break;
case OP_PUSH_OR_JUMP_EXACT1:
case OP_PUSH_IF_PEEK_NEXT:
p += SIZE_RELADDR + 1;
table->addr = pbegin;
table->num = num - current_mem_num;
table->outer_repeat = current_mem;
num++;
table++;
break;
case OP_REPEAT:
case OP_REPEAT_NG:
GET_MEMNUM_INC(mem, p);
p += SIZE_RELADDR;
if (reg->repeat_range[mem].lower == 0) {
table->addr = pbegin;
table->num = num - current_mem_num;
table->outer_repeat = mem;
num++;
table++;
}
current_mem = mem;
current_mem_num = num;
break;
case OP_REPEAT_INC:
case OP_REPEAT_INC_NG:
GET_MEMNUM_INC(mem, p);
{
long inner_num = num - current_mem_num;
OnigRepeatRange *repeat_range = &reg->repeat_range[mem];
if (repeat_range->lower < repeat_range->upper) {
table->addr = pbegin;
table->num = num - current_mem_num;
table->outer_repeat = mem;
table++;
}
num -= inner_num;
num += inner_num * repeat_range->lower + (inner_num + 1) * (repeat_range->upper == 0x7fffffff ? 1 : repeat_range->upper - repeat_range->lower);
current_mem = -1;
current_mem_num = 0;
}
break;
case OP_REPEAT_INC_SG:
case OP_REPEAT_INC_NG_SG:
// TODO: support OP_REPEAT opcodes.
return;
case OP_NULL_CHECK_START:
case OP_NULL_CHECK_END:
case OP_NULL_CHECK_END_MEMST:
case OP_NULL_CHECK_END_MEMST_PUSH:
p += SIZE_MEMNUM; break;
case OP_PUSH_POS:
case OP_POP_POS:
case OP_PUSH_POS_NOT:
case OP_FAIL_POS:
case OP_PUSH_STOP_BT:
case OP_POP_STOP_BT:
case OP_LOOK_BEHIND:
case OP_PUSH_LOOK_BEHIND_NOT:
case OP_FAIL_LOOK_BEHIND_NOT:
case OP_PUSH_ABSENT_POS:
case OP_ABSENT_END:
case OP_ABSENT:
return;
case OP_CALL:
case OP_RETURN:
return;
case OP_CONDITION:
return;
case OP_STATE_CHECK_PUSH:
case OP_STATE_CHECK_PUSH_OR_JUMP:
case OP_STATE_CHECK:
case OP_STATE_CHECK_ANYCHAR_STAR:
case OP_STATE_CHECK_ANYCHAR_ML_STAR:
return;
case OP_SET_OPTION_PUSH:
case OP_SET_OPTION:
p += SIZE_OPTION;
break;
}
}
}
#endif /* USE_MATCH_CACHE */
extern void
onig_region_clear(OnigRegion* region)
{
int i;
for (i = 0; i < region->num_regs; i++) {
region->beg[i] = region->end[i] = ONIG_REGION_NOTPOS;
}
#ifdef USE_CAPTURE_HISTORY
history_root_free(region);
#endif
}
extern int
onig_region_resize(OnigRegion* region, int n)
{
region->num_regs = n;
if (n < ONIG_NREGION)
n = ONIG_NREGION;
if (region->allocated == 0) {
region->beg = (OnigPosition* )xmalloc(n * sizeof(OnigPosition));
if (region->beg == 0)
return ONIGERR_MEMORY;
region->end = (OnigPosition* )xmalloc(n * sizeof(OnigPosition));
if (region->end == 0) {
xfree(region->beg);
return ONIGERR_MEMORY;
}
region->allocated = n;
}
else if (region->allocated < n) {
OnigPosition *tmp;
region->allocated = 0;
tmp = (OnigPosition* )xrealloc(region->beg, n * sizeof(OnigPosition));
if (tmp == 0) {
xfree(region->beg);
xfree(region->end);
return ONIGERR_MEMORY;
}
region->beg = tmp;
tmp = (OnigPosition* )xrealloc(region->end, n * sizeof(OnigPosition));
if (tmp == 0) {
xfree(region->beg);
xfree(region->end);
return ONIGERR_MEMORY;
}
region->end = tmp;
region->allocated = n;
}
return 0;
}
static int
onig_region_resize_clear(OnigRegion* region, int n)
{
int r;
r = onig_region_resize(region, n);
if (r != 0) return r;
onig_region_clear(region);
return 0;
}
extern int
onig_region_set(OnigRegion* region, int at, int beg, int end)
{
if (at < 0) return ONIGERR_INVALID_ARGUMENT;
if (at >= region->allocated) {
int r = onig_region_resize(region, at + 1);
if (r < 0) return r;
}
region->beg[at] = beg;
region->end[at] = end;
return 0;
}
extern void
onig_region_init(OnigRegion* region)
{
region->num_regs = 0;
region->allocated = 0;
region->beg = (OnigPosition* )0;
region->end = (OnigPosition* )0;
#ifdef USE_CAPTURE_HISTORY
region->history_root = (OnigCaptureTreeNode* )0;
#endif
}
extern OnigRegion*
onig_region_new(void)
{
OnigRegion* r;
r = (OnigRegion* )xmalloc(sizeof(OnigRegion));
if (r)
onig_region_init(r);
return r;
}
extern void
onig_region_free(OnigRegion* r, int free_self)
{
if (r) {
if (r->allocated > 0) {
if (r->beg) xfree(r->beg);
if (r->end) xfree(r->end);
r->allocated = 0;
}
#ifdef USE_CAPTURE_HISTORY
history_root_free(r);
#endif
if (free_self) xfree(r);
}
}
extern void
onig_region_copy(OnigRegion* to, const OnigRegion* from)
{
#define RREGC_SIZE (sizeof(int) * from->num_regs)
int i, r;
if (to == from) return;
r = onig_region_resize(to, from->num_regs);
if (r) return;
for (i = 0; i < from->num_regs; i++) {
to->beg[i] = from->beg[i];
to->end[i] = from->end[i];
}
to->num_regs = from->num_regs;
#ifdef USE_CAPTURE_HISTORY
history_root_free(to);
if (IS_NOT_NULL(from->history_root)) {
to->history_root = history_tree_clone(from->history_root);
}
#endif
}
/** stack **/
#define INVALID_STACK_INDEX -1
/* stack type */
/* used by normal-POP */
#define STK_ALT 0x0001
#define STK_LOOK_BEHIND_NOT 0x0002
#define STK_POS_NOT 0x0003
/* handled by normal-POP */
#define STK_MEM_START 0x0100
#define STK_MEM_END 0x8200
#define STK_REPEAT_INC 0x0300
#define STK_STATE_CHECK_MARK 0x1000
/* avoided by normal-POP */
#define STK_NULL_CHECK_START 0x3000
#define STK_NULL_CHECK_END 0x5000 /* for recursive call */
#define STK_MEM_END_MARK 0x8400
#define STK_POS 0x0500 /* used when POP-POS */
#define STK_STOP_BT 0x0600 /* mark for "(?>...)" */
#define STK_REPEAT 0x0700
#define STK_CALL_FRAME 0x0800
#define STK_RETURN 0x0900
#define STK_VOID 0x0a00 /* for fill a blank */
#define STK_ABSENT_POS 0x0b00 /* for absent */
#define STK_ABSENT 0x0c00 /* absent inner loop marker */
/* stack type check mask */
#define STK_MASK_POP_USED 0x00ff
#define STK_MASK_TO_VOID_TARGET 0x10ff
#define STK_MASK_MEM_END_OR_MARK 0x8000 /* MEM_END or MEM_END_MARK */
#ifdef USE_CACHE_MATCH_OPT
#define MATCH_ARG_INIT_CACHE_MATCH_OPT(msa) do {\
(msa).enable_cache_match_opt = 0;\
(msa).num_fail = 0;\
(msa).num_cache_opcode = NUM_CACHE_OPCODE_UNINIT;\
(msa).cache_index_table = (OnigCacheIndex *)0;\
(msa).match_cache = (uint8_t *)0;\
} while(0)
#define MATCH_ARG_FREE_CACHE_MATCH_OPT(msa) do {\
if ((msa).cache_index_table) xfree((msa).cache_index_table);\
if ((msa).match_cache) xfree((msa).match_cache);\
} while(0)
#else
#define MATCH_ARG_INIT_CACHE_MATCH_OPT(msa)
#define MATCH_ARG_FREE_CACHE_MATCH_OPT(msa)
#endif
#ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE
# define MATCH_ARG_INIT(msa, arg_option, arg_region, arg_start, arg_gpos) do {\
(msa).stack_p = (void* )0;\
(msa).options = (arg_option);\
(msa).region = (arg_region);\
(msa).start = (arg_start);\
(msa).gpos = (arg_gpos);\
(msa).best_len = ONIG_MISMATCH;\
(msa).counter = 0;\
(msa).end_time = 0;\
MATCH_ARG_INIT_CACHE_MATCH_OPT(msa);\
} while(0)
#else
# define MATCH_ARG_INIT(msa, arg_option, arg_region, arg_start, arg_gpos) do {\
(msa).stack_p = (void* )0;\
(msa).options = (arg_option);\
(msa).region = (arg_region);\
(msa).start = (arg_start);\
(msa).gpos = (arg_gpos);\
(msa).counter = 0;\
(msa).end_time = 0;\
MATCH_ARG_INIT_CACHE_MATCH_OPT(msa);\
} while(0)
#endif
#ifdef USE_COMBINATION_EXPLOSION_CHECK
# define STATE_CHECK_BUFF_MALLOC_THRESHOLD_SIZE 16
# define STATE_CHECK_BUFF_INIT(msa, str_len, offset, state_num) do { \
if ((state_num) > 0 && str_len >= STATE_CHECK_STRING_THRESHOLD_LEN) {\
unsigned int size = (unsigned int )(((str_len) + 1) * (state_num) + 7) >> 3;\
offset = ((offset) * (state_num)) >> 3;\
if (size > 0 && offset < size && size < STATE_CHECK_BUFF_MAX_SIZE) {\
if (size >= STATE_CHECK_BUFF_MALLOC_THRESHOLD_SIZE) {\
(msa).state_check_buff = (void* )xmalloc(size);\
CHECK_NULL_RETURN_MEMERR((msa).state_check_buff);\
}\
else \
(msa).state_check_buff = (void* )xalloca(size);\
xmemset(((char* )((msa).state_check_buff)+(offset)), 0, \
(size_t )(size - (offset))); \
(msa).state_check_buff_size = size;\
}\
else {\
(msa).state_check_buff = (void* )0;\
(msa).state_check_buff_size = 0;\
}\
}\
else {\
(msa).state_check_buff = (void* )0;\
(msa).state_check_buff_size = 0;\
}\
} while(0)
# define MATCH_ARG_FREE(msa) do {\
if ((msa).stack_p) xfree((msa).stack_p);\
if ((msa).state_check_buff_size >= STATE_CHECK_BUFF_MALLOC_THRESHOLD_SIZE) { \
if ((msa).state_check_buff) xfree((msa).state_check_buff);\
}\
MATCH_ARG_FREE_CACHE_MATCH_OPT(msa);\
} while(0)
#else /* USE_COMBINATION_EXPLOSION_CHECK */
# define MATCH_ARG_FREE(msa) do {\
if ((msa).stack_p) xfree((msa).stack_p);\
MATCH_ARG_FREE_CACHE_MATCH_OPT(msa);\
} while (0)
#endif /* USE_COMBINATION_EXPLOSION_CHECK */
#define MAX_PTR_NUM 100
#define STACK_INIT(alloc_addr, heap_addr, ptr_num, stack_num) do {\
if (ptr_num > MAX_PTR_NUM) {\
alloc_addr = (char* )xmalloc(sizeof(OnigStackIndex) * (ptr_num));\
heap_addr = alloc_addr;\
if (msa->stack_p) {\
stk_alloc = (OnigStackType* )(msa->stack_p);\
stk_base = stk_alloc;\
stk = stk_base;\
stk_end = stk_base + msa->stack_n;\
} else {\
stk_alloc = (OnigStackType* )xalloca(sizeof(OnigStackType) * (stack_num));\
stk_base = stk_alloc;\
stk = stk_base;\
stk_end = stk_base + (stack_num);\
}\
} else if (msa->stack_p) {\
alloc_addr = (char* )xalloca(sizeof(OnigStackIndex) * (ptr_num));\
heap_addr = NULL;\
stk_alloc = (OnigStackType* )(msa->stack_p);\
stk_base = stk_alloc;\
stk = stk_base;\
stk_end = stk_base + msa->stack_n;\
}\
else {\
alloc_addr = (char* )xalloca(sizeof(OnigStackIndex) * (ptr_num)\
+ sizeof(OnigStackType) * (stack_num));\
heap_addr = NULL;\
stk_alloc = (OnigStackType* )(alloc_addr + sizeof(OnigStackIndex) * (ptr_num));\
stk_base = stk_alloc;\
stk = stk_base;\
stk_end = stk_base + (stack_num);\
}\
} while(0)
#define STACK_SAVE do{\
if (stk_base != stk_alloc) {\
msa->stack_p = stk_base;\
msa->stack_n = stk_end - stk_base; /* TODO: check overflow */\
};\
} while(0)
static unsigned int MatchStackLimitSize = DEFAULT_MATCH_STACK_LIMIT_SIZE;
extern unsigned int
onig_get_match_stack_limit_size(void)
{
return MatchStackLimitSize;
}
extern int
onig_set_match_stack_limit_size(unsigned int size)
{
MatchStackLimitSize = size;
return 0;
}
static int
stack_double(OnigStackType** arg_stk_base, OnigStackType** arg_stk_end,
OnigStackType** arg_stk, OnigStackType* stk_alloc, OnigMatchArg* msa)
{
size_t n;
OnigStackType *x, *stk_base, *stk_end, *stk;
stk_base = *arg_stk_base;
stk_end = *arg_stk_end;
stk = *arg_stk;
n = stk_end - stk_base;
if (stk_base == stk_alloc && IS_NULL(msa->stack_p)) {
x = (OnigStackType* )xmalloc(sizeof(OnigStackType) * n * 2);
if (IS_NULL(x)) {
STACK_SAVE;
return ONIGERR_MEMORY;
}
xmemcpy(x, stk_base, n * sizeof(OnigStackType));
n *= 2;
}
else {
unsigned int limit_size = MatchStackLimitSize;
n *= 2;
if (limit_size != 0 && n > limit_size) {
if ((unsigned int )(stk_end - stk_base) == limit_size)
return ONIGERR_MATCH_STACK_LIMIT_OVER;
else
n = limit_size;
}
x = (OnigStackType* )xrealloc(stk_base, sizeof(OnigStackType) * n);
if (IS_NULL(x)) {
STACK_SAVE;
return ONIGERR_MEMORY;
}
}
*arg_stk = x + (stk - stk_base);
*arg_stk_base = x;
*arg_stk_end = x + n;
return 0;
}
#define STACK_ENSURE(n) do {\
if (stk_end - stk < (n)) {\
int r = stack_double(&stk_base, &stk_end, &stk, stk_alloc, msa);\
if (r != 0) {\
STACK_SAVE;\
if (xmalloc_base) xfree(xmalloc_base);\
return r;\
}\
}\
} while(0)
#define STACK_AT(index) (stk_base + (index))
#define GET_STACK_INDEX(stk) ((stk) - stk_base)
#define STACK_PUSH_TYPE(stack_type) do {\
STACK_ENSURE(1);\
stk->type = (stack_type);\
stk->null_check = stk == stk_base ? 0 : (stk-1)->null_check;\
STACK_INC;\
} while(0)
#define IS_TO_VOID_TARGET(stk) (((stk)->type & STK_MASK_TO_VOID_TARGET) != 0)
#ifdef USE_COMBINATION_EXPLOSION_CHECK
# define STATE_CHECK_POS(s,snum) \
(((s) - str) * num_comb_exp_check + ((snum) - 1))
# define STATE_CHECK_VAL(v,snum) do {\
if (state_check_buff != NULL) {\
ptrdiff_t x = STATE_CHECK_POS(s,snum);\
(v) = state_check_buff[x/8] & (1<<(x%8));\
}\
else (v) = 0;\
} while(0)
# define ELSE_IF_STATE_CHECK_MARK(stk) \
else if ((stk)->type == STK_STATE_CHECK_MARK) { \
ptrdiff_t x = STATE_CHECK_POS(stk->u.state.pstr, stk->u.state.state_check);\
state_check_buff[x/8] |= (1<<(x%8)); \
}
# define STACK_PUSH(stack_type,pat,s,sprev,keep) do {\
STACK_ENSURE(1);\
stk->type = (stack_type);\
stk->u.state.pcode = (pat);\
stk->u.state.pstr = (s);\
stk->u.state.pstr_prev = (sprev);\
stk->u.state.state_check = 0;\
stk->u.state.pkeep = (keep);\
STACK_INC;\
} while(0)
# define STACK_PUSH_ENSURED(stack_type,pat) do {\
stk->type = (stack_type);\
stk->u.state.pcode = (pat);\
stk->u.state.state_check = 0;\
STACK_INC;\
} while(0)
# define STACK_PUSH_ALT_WITH_STATE_CHECK(pat,s,sprev,snum,keep) do {\
STACK_ENSURE(1);\
stk->type = STK_ALT;\
stk->u.state.pcode = (pat);\
stk->u.state.pstr = (s);\
stk->u.state.pstr_prev = (sprev);\
stk->u.state.state_check = ((state_check_buff != NULL) ? (snum) : 0);\
stk->u.state.pkeep = (keep);\
STACK_INC;\
} while(0)
# define STACK_PUSH_STATE_CHECK(s,snum) do {\
if (state_check_buff != NULL) {\
STACK_ENSURE(1);\
stk->type = STK_STATE_CHECK_MARK;\
stk->u.state.pstr = (s);\
stk->u.state.state_check = (snum);\
STACK_INC;\
}\
} while(0)
#else /* USE_COMBINATION_EXPLOSION_CHECK */
# define ELSE_IF_STATE_CHECK_MARK(stk)
# define STACK_PUSH(stack_type,pat,s,sprev,keep) do {\
STACK_ENSURE(1);\
stk->type = (stack_type);\
stk->null_check = stk == stk_base ? 0 : (stk-1)->null_check;\
stk->u.state.pcode = (pat);\
stk->u.state.pstr = (s);\
stk->u.state.pstr_prev = (sprev);\
stk->u.state.pkeep = (keep);\
STACK_INC;\
} while(0)
# define STACK_PUSH_ENSURED(stack_type,pat) do {\
stk->type = (stack_type);\
stk->null_check = stk == stk_base ? 0 : (stk-1)->null_check;\
stk->u.state.pcode = (pat);\
STACK_INC;\
} while(0)
#endif /* USE_COMBINATION_EXPLOSION_CHECK */
#define STACK_PUSH_ALT(pat,s,sprev,keep) STACK_PUSH(STK_ALT,pat,s,sprev,keep)
#define STACK_PUSH_POS(s,sprev,keep) STACK_PUSH(STK_POS,NULL_UCHARP,s,sprev,keep)
#define STACK_PUSH_POS_NOT(pat,s,sprev,keep) STACK_PUSH(STK_POS_NOT,pat,s,sprev,keep)
#define STACK_PUSH_ABSENT STACK_PUSH_TYPE(STK_ABSENT)
#define STACK_PUSH_STOP_BT STACK_PUSH_TYPE(STK_STOP_BT)
#define STACK_PUSH_LOOK_BEHIND_NOT(pat,s,sprev,keep) \
STACK_PUSH(STK_LOOK_BEHIND_NOT,pat,s,sprev,keep)
#ifdef USE_CACHE_MATCH_OPT
#define DO_CACHE_MATCH_OPT(reg,stk,repeat_stk,enable,p,num_cache_table,num_cache_size,table,pos,match_cache) do {\
if (enable) {\
long cache_index = find_cache_index_table((reg), (stk), (repeat_stk), (table), (num_cache_table), (p));\
if (cache_index >= 0) {\
long key = (num_cache_size) * (long)(pos) + cache_index;\
long index = key >> 3;\
long mask = 1 << (key & 7);\
if ((match_cache)[index] & mask) {\
goto fail;\
}\
(match_cache)[index] |= mask;\
}\
}\
} while (0)
static long find_cache_index_table(regex_t* reg, OnigStackType *stk, OnigStackIndex *repeat_stk, OnigCacheIndex* table, long num_cache_table, UChar* p)
{
long l = 0, r = num_cache_table - 1, m = 0;
OnigCacheIndex* item;
OnigRepeatRange* range;
OnigStackType *stkp;
int count = 0;
int is_inc = *p == OP_REPEAT_INC || *p == OP_REPEAT_INC_NG;
while (l <= r) {
m = (l + r) / 2;
if (table[m].addr == p) break;
if (table[m].addr < p) l = m + 1;
else r = m - 1;
}
if (!(0 <= m && m < num_cache_table && table[m].addr == p)) {
return -1;
}
item = &table[m];
if (item->outer_repeat == -1) {
return item->num;
}
range = &reg->repeat_range[item->outer_repeat];
stkp = &stk[repeat_stk[item->outer_repeat]];
count = is_inc ? stkp->u.repeat.count - 1 : stkp->u.repeat.count;
if (count < range->lower) {
return range->base_num + range->inner_num * count + item->num;
}
if (range->upper == 0x7fffffff) {
return range->base_num + range->inner_num * range->lower + (is_inc ? 0 : 1) + item->num;
}
return range->base_num + range->inner_num * range->lower + (range->inner_num + 1) * (count - range->lower) + item->num;
}
static void reset_match_cache(regex_t* reg, UChar* pbegin, UChar* pend, long pos, uint8_t* match_cache, OnigCacheIndex *table, long num_cache_size, long num_cache_table) {
long l = 0, r = num_cache_table - 1, m1 = 0, m2 = 0;
int is_inc = *pend == OP_REPEAT_INC || *pend == OP_REPEAT_INC_NG;
OnigCacheIndex *item1, *item2;
long k1, k2, base;
while (l <= r) {
m1 = (l + r) / 2;
if (table[m1].addr == pbegin) break;
if (table[m1].addr < pbegin) l = m1 + 1;
else r = m1 - 1;
}
l = 0, r = num_cache_table - 1;
while (l <= r) {
m2 = (l + r) / 2;
if (table[m2].addr == pend) break;
if (table[m2].addr < pend) l = m2 + 1;
else r = m2 - 1;
}
if (table[m1].addr < pbegin && m1 + 1 < num_cache_table) m1++;
if (table[m2].addr > pend && m2 - 1 > 0) m2--;
item1 = &table[m1];
item2 = &table[m2];
if (item1->outer_repeat < 0) k1 = item1->num;
else k1 = reg->repeat_range[item1->outer_repeat].base_num + item1->num;
if (item2->outer_repeat < 0) k2 = item2->num;
else {
OnigRepeatRange *range = &reg->repeat_range[item2->outer_repeat];
if (range->upper == 0x7fffffff) k2 = range->base_num + range->inner_num * range->lower + (is_inc ? 0 : 1) + item2->num;
else k2 = range->base_num + range->inner_num * range->lower + (range->inner_num + 1) * (range->upper - range->lower - (is_inc ? 1 : 0)) + item2->num;
}
base = pos * num_cache_size;
k1 += base;
k2 += base;
if ((k1 >> 3) == (k2 >> 3)) {
match_cache[k1 >> 3] &= (((1 << (8 - (k2 & 7) - 1)) - 1) << ((k2 & 7) + 1)) | ((1 << (k1 & 7)) - 1);
} else {
long i = k1 >> 3;
if (k1 & 7) {
match_cache[k1 >> 3] &= (1 << ((k1 & 7) - 1)) - 1;
i++;
}
if (i < (k2 >> 3)) {
xmemset(&match_cache[i], 0, (k2 >> 3) - i);
if (k2 & 7) {
match_cache[k2 >> 3] &= (((1 << (8 - (k2 & 7) - 1)) - 1) << ((k2 & 7) + 1));
}
}
}
}
#else
#define DO_CACHE_MATCH_OPT(reg,stk,repeat_stk,enable,p,num_cache_table,num_cache_size,table,pos,match_cache)
#endif /* USE_CACHE_MATCH_OPT */
#define STACK_PUSH_REPEAT(id, pat) do {\
STACK_ENSURE(1);\
stk->type = STK_REPEAT;\
stk->null_check = stk == stk_base ? 0 : (stk-1)->null_check;\
stk->u.repeat.num = (id);\
stk->u.repeat.pcode = (pat);\
stk->u.repeat.count = 0;\
STACK_INC;\
} while(0)
#define STACK_PUSH_REPEAT_INC(sindex) do {\
STACK_ENSURE(1);\
stk->type = STK_REPEAT_INC;\
stk->null_check = stk == stk_base ? 0 : (stk-1)->null_check;\
stk->u.repeat_inc.si = (sindex);\
STACK_INC;\
} while(0)
#define STACK_PUSH_MEM_START(mnum, s) do {\
STACK_ENSURE(1);\
stk->type = STK_MEM_START;\
stk->null_check = stk == stk_base ? 0 : (stk-1)->null_check;\
stk->u.mem.num = (mnum);\
stk->u.mem.pstr = (s);\
stk->u.mem.start = mem_start_stk[mnum];\
stk->u.mem.end = mem_end_stk[mnum];\
mem_start_stk[mnum] = GET_STACK_INDEX(stk);\
mem_end_stk[mnum] = INVALID_STACK_INDEX;\
STACK_INC;\
} while(0)
#define STACK_PUSH_MEM_END(mnum, s) do {\
STACK_ENSURE(1);\
stk->type = STK_MEM_END;\
stk->null_check = stk == stk_base ? 0 : (stk-1)->null_check;\
stk->u.mem.num = (mnum);\
stk->u.mem.pstr = (s);\
stk->u.mem.start = mem_start_stk[mnum];\
stk->u.mem.end = mem_end_stk[mnum];\
mem_end_stk[mnum] = GET_STACK_INDEX(stk);\
STACK_INC;\
} while(0)
#define STACK_PUSH_MEM_END_MARK(mnum) do {\
STACK_ENSURE(1);\
stk->type = STK_MEM_END_MARK;\
stk->null_check = stk == stk_base ? 0 : (stk-1)->null_check;\
stk->u.mem.num = (mnum);\
STACK_INC;\
} while(0)
#define STACK_GET_MEM_START(mnum, k) do {\
int level = 0;\
k = stk;\
while (k > stk_base) {\
k--;\
if ((k->type & STK_MASK_MEM_END_OR_MARK) != 0 \
&& k->u.mem.num == (mnum)) {\
level++;\
}\
else if (k->type == STK_MEM_START && k->u.mem.num == (mnum)) {\
if (level == 0) break;\
level--;\
}\
}\
} while(0)
#define STACK_GET_MEM_RANGE(k, mnum, start, end) do {\
int level = 0;\
while (k < stk) {\
if (k->type == STK_MEM_START && k->u.mem.num == (mnum)) {\
if (level == 0) (start) = k->u.mem.pstr;\
level++;\
}\
else if (k->type == STK_MEM_END && k->u.mem.num == (mnum)) {\
level--;\
if (level == 0) {\
(end) = k->u.mem.pstr;\
break;\
}\
}\
k++;\
}\
} while(0)
#define STACK_PUSH_NULL_CHECK_START(cnum, s) do {\
STACK_ENSURE(1);\
stk->type = STK_NULL_CHECK_START;\
stk->null_check = (OnigStackIndex)(stk - stk_base);\
stk->u.null_check.num = (cnum);\
stk->u.null_check.pstr = (s);\
STACK_INC;\
} while(0)
#define STACK_PUSH_NULL_CHECK_END(cnum) do {\
STACK_ENSURE(1);\
stk->type = STK_NULL_CHECK_END;\
stk->null_check = (OnigStackIndex)(stk - stk_base);\
stk->u.null_check.num = (cnum);\
STACK_INC;\
} while(0)
#define STACK_PUSH_CALL_FRAME(pat) do {\
STACK_ENSURE(1);\
stk->type = STK_CALL_FRAME;\
stk->null_check = stk == stk_base ? 0 : (stk-1)->null_check;\
stk->u.call_frame.ret_addr = (pat);\
STACK_INC;\
} while(0)
#define STACK_PUSH_RETURN do {\
STACK_ENSURE(1);\
stk->type = STK_RETURN;\
stk->null_check = stk == stk_base ? 0 : (stk-1)->null_check;\
STACK_INC;\
} while(0)
#define STACK_PUSH_ABSENT_POS(start, end) do {\
STACK_ENSURE(1);\
stk->type = STK_ABSENT_POS;\
stk->null_check = stk == stk_base ? 0 : (stk-1)->null_check;\
stk->u.absent_pos.abs_pstr = (start);\
stk->u.absent_pos.end_pstr = (end);\
STACK_INC;\
} while(0)
#ifdef ONIG_DEBUG
# define STACK_BASE_CHECK(p, at) \
if ((p) < stk_base) {\
fprintf(stderr, "at %s\n", at);\
goto stack_error;\
}
#else
# define STACK_BASE_CHECK(p, at)
#endif
#define STACK_POP_ONE do {\
stk--;\
STACK_BASE_CHECK(stk, "STACK_POP_ONE"); \
} while(0)
#define STACK_POP do {\
switch (pop_level) {\
case STACK_POP_LEVEL_FREE:\
while (1) {\
stk--;\
STACK_BASE_CHECK(stk, "STACK_POP"); \
if ((stk->type & STK_MASK_POP_USED) != 0) break;\
ELSE_IF_STATE_CHECK_MARK(stk);\
}\
break;\
case STACK_POP_LEVEL_MEM_START:\
while (1) {\
stk--;\
STACK_BASE_CHECK(stk, "STACK_POP 2"); \
if ((stk->type & STK_MASK_POP_USED) != 0) break;\
else if (stk->type == STK_MEM_START) {\
mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
}\
ELSE_IF_STATE_CHECK_MARK(stk);\
}\
break;\
default:\
while (1) {\
stk--;\
STACK_BASE_CHECK(stk, "STACK_POP 3"); \
if ((stk->type & STK_MASK_POP_USED) != 0) break;\
else if (stk->type == STK_MEM_START) {\
mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
}\
else if (stk->type == STK_REPEAT_INC) {\
STACK_AT(stk->u.repeat_inc.si)->u.repeat.count--;\
}\
else if (stk->type == STK_MEM_END) {\
mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
}\
ELSE_IF_STATE_CHECK_MARK(stk);\
}\
break;\
}\
} while(0)
#define STACK_POP_TIL_POS_NOT do {\
while (1) {\
stk--;\
STACK_BASE_CHECK(stk, "STACK_POP_TIL_POS_NOT"); \
if (stk->type == STK_POS_NOT) break;\
else if (stk->type == STK_MEM_START) {\
mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
}\
else if (stk->type == STK_REPEAT_INC) {\
STACK_AT(stk->u.repeat_inc.si)->u.repeat.count--;\
}\
else if (stk->type == STK_MEM_END) {\
mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
}\
ELSE_IF_STATE_CHECK_MARK(stk);\
}\
} while(0)
#define STACK_POP_TIL_LOOK_BEHIND_NOT do {\
while (1) {\
stk--;\
STACK_BASE_CHECK(stk, "STACK_POP_TIL_LOOK_BEHIND_NOT"); \
if (stk->type == STK_LOOK_BEHIND_NOT) break;\
else if (stk->type == STK_MEM_START) {\
mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
}\
else if (stk->type == STK_REPEAT_INC) {\
STACK_AT(stk->u.repeat_inc.si)->u.repeat.count--;\
}\
else if (stk->type == STK_MEM_END) {\
mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
}\
ELSE_IF_STATE_CHECK_MARK(stk);\
}\
} while(0)
#define STACK_POP_TIL_ABSENT do {\
while (1) {\
stk--;\
STACK_BASE_CHECK(stk, "STACK_POP_TIL_ABSENT"); \
if (stk->type == STK_ABSENT) break;\
else if (stk->type == STK_MEM_START) {\
mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
}\
else if (stk->type == STK_REPEAT_INC) {\
STACK_AT(stk->u.repeat_inc.si)->u.repeat.count--;\
}\
else if (stk->type == STK_MEM_END) {\
mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
}\
ELSE_IF_STATE_CHECK_MARK(stk);\
}\
} while(0)
#define STACK_POP_ABSENT_POS(start, end) do {\
stk--;\
STACK_BASE_CHECK(stk, "STACK_POP_ABSENT_POS"); \
(start) = stk->u.absent_pos.abs_pstr;\
(end) = stk->u.absent_pos.end_pstr;\
} while(0)
#define STACK_POS_END(k) do {\
k = stk;\
while (1) {\
k--;\
STACK_BASE_CHECK(k, "STACK_POS_END"); \
if (IS_TO_VOID_TARGET(k)) {\
k->type = STK_VOID;\
}\
else if (k->type == STK_POS) {\
k->type = STK_VOID;\
break;\
}\
}\
} while(0)
#define STACK_STOP_BT_END do {\
OnigStackType *k = stk;\
while (1) {\
k--;\
STACK_BASE_CHECK(k, "STACK_STOP_BT_END"); \
if (IS_TO_VOID_TARGET(k)) {\
k->type = STK_VOID;\
}\
else if (k->type == STK_STOP_BT) {\
k->type = STK_VOID;\
break;\
}\
}\
} while(0)
#define STACK_NULL_CHECK(isnull,id,s) do {\
OnigStackType* k = STACK_AT((stk-1)->null_check)+1;\
while (1) {\
k--;\
STACK_BASE_CHECK(k, "STACK_NULL_CHECK"); \
if (k->type == STK_NULL_CHECK_START) {\
if (k->u.null_check.num == (id)) {\
(isnull) = (k->u.null_check.pstr == (s));\
break;\
}\
}\
}\
} while(0)
#define STACK_NULL_CHECK_REC(isnull,id,s) do {\
int level = 0;\
OnigStackType* k = STACK_AT((stk-1)->null_check)+1;\
while (1) {\
k--;\
STACK_BASE_CHECK(k, "STACK_NULL_CHECK_REC"); \
if (k->type == STK_NULL_CHECK_START) {\
if (k->u.null_check.num == (id)) {\
if (level == 0) {\
(isnull) = (k->u.null_check.pstr == (s));\
break;\
}\
else level--;\
}\
}\
else if (k->type == STK_NULL_CHECK_END) {\
level++;\
}\
}\
} while(0)
#define STACK_NULL_CHECK_MEMST(isnull,ischange,id,s,reg) do {\
OnigStackType* k = STACK_AT((stk-1)->null_check)+1;\
while (1) {\
k--;\
STACK_BASE_CHECK(k, "STACK_NULL_CHECK_MEMST"); \
if (k->type == STK_NULL_CHECK_START) {\
if (k->u.null_check.num == (id)) {\
if (k->u.null_check.pstr != (s)) {\
(isnull) = 0;\
break;\
}\
else {\
UChar* endp;\
(isnull) = 1;\
while (k < stk) {\
if (k->type == STK_MEM_START) {\
if (k->u.mem.end == INVALID_STACK_INDEX) {\
(isnull) = 0; (ischange) = 1; break;\
}\
if (BIT_STATUS_AT(reg->bt_mem_end, k->u.mem.num))\
endp = STACK_AT(k->u.mem.end)->u.mem.pstr;\
else\
endp = (UChar* )k->u.mem.end;\
if (STACK_AT(k->u.mem.start)->u.mem.pstr != endp) {\
(isnull) = 0; (ischange) = 1; break;\
}\
else if (endp != s) {\
(isnull) = -1; /* empty, but position changed */ \
}\
}\
k++;\
}\
break;\
}\
}\
}\
}\
} while(0)
#define STACK_NULL_CHECK_MEMST_REC(isnull,id,s,reg) do {\
int level = 0;\
OnigStackType* k = STACK_AT((stk-1)->null_check)+1;\
while (1) {\
k--;\
STACK_BASE_CHECK(k, "STACK_NULL_CHECK_MEMST_REC"); \
if (k->type == STK_NULL_CHECK_START) {\
if (k->u.null_check.num == (id)) {\
if (level == 0) {\
if (k->u.null_check.pstr != (s)) {\
(isnull) = 0;\
break;\
}\
else {\
UChar* endp;\
(isnull) = 1;\
while (k < stk) {\
if (k->type == STK_MEM_START) {\
if (k->u.mem.end == INVALID_STACK_INDEX) {\
(isnull) = 0; break;\
}\
if (BIT_STATUS_AT(reg->bt_mem_end, k->u.mem.num))\
endp = STACK_AT(k->u.mem.end)->u.mem.pstr;\
else\
endp = (UChar* )k->u.mem.end;\
if (STACK_AT(k->u.mem.start)->u.mem.pstr != endp) {\
(isnull) = 0; break;\
}\
else if (endp != s) {\
(isnull) = -1; /* empty, but position changed */ \
}\
}\
k++;\
}\
break;\
}\
}\
else {\
level--;\
}\
}\
}\
else if (k->type == STK_NULL_CHECK_END) {\
if (k->u.null_check.num == (id)) level++;\
}\
}\
} while(0)
#define STACK_GET_REPEAT(id, k) do {\
int level = 0;\
k = stk;\
while (1) {\
k--;\
STACK_BASE_CHECK(k, "STACK_GET_REPEAT"); \
if (k->type == STK_REPEAT) {\
if (level == 0) {\
if (k->u.repeat.num == (id)) {\
break;\
}\
}\
}\
else if (k->type == STK_CALL_FRAME) level--;\
else if (k->type == STK_RETURN) level++;\
}\
} while(0)
#define STACK_RETURN(addr) do {\
int level = 0;\
OnigStackType* k = stk;\
while (1) {\
k--;\
STACK_BASE_CHECK(k, "STACK_RETURN"); \
if (k->type == STK_CALL_FRAME) {\
if (level == 0) {\
(addr) = k->u.call_frame.ret_addr;\
break;\
}\
else level--;\
}\
else if (k->type == STK_RETURN)\
level++;\
}\
} while(0)
#define STRING_CMP(s1,s2,len) do {\
while (len-- > 0) {\
if (*s1++ != *s2++) goto fail;\
}\
} while(0)
#define STRING_CMP_IC(case_fold_flag,s1,ps2,len,text_end) do {\
if (string_cmp_ic(encode, case_fold_flag, s1, ps2, len, text_end) == 0) \
goto fail; \
} while(0)
static int string_cmp_ic(OnigEncoding enc, int case_fold_flag,
UChar* s1, UChar** ps2, OnigDistance mblen, const UChar* text_end)
{
UChar buf1[ONIGENC_MBC_CASE_FOLD_MAXLEN];
UChar buf2[ONIGENC_MBC_CASE_FOLD_MAXLEN];
UChar *p1, *p2, *end1, *s2;
int len1, len2;
s2 = *ps2;
end1 = s1 + mblen;
while (s1 < end1) {
len1 = ONIGENC_MBC_CASE_FOLD(enc, case_fold_flag, &s1, text_end, buf1);
len2 = ONIGENC_MBC_CASE_FOLD(enc, case_fold_flag, &s2, text_end, buf2);
if (len1 != len2) return 0;
p1 = buf1;
p2 = buf2;
while (len1-- > 0) {
if (*p1 != *p2) return 0;
p1++;
p2++;
}
}
*ps2 = s2;
return 1;
}
#define STRING_CMP_VALUE(s1,s2,len,is_fail) do {\
is_fail = 0;\
while (len-- > 0) {\
if (*s1++ != *s2++) {\
is_fail = 1; break;\
}\
}\
} while(0)
#define STRING_CMP_VALUE_IC(case_fold_flag,s1,ps2,len,text_end,is_fail) do {\
if (string_cmp_ic(encode, case_fold_flag, s1, ps2, len, text_end) == 0) \
is_fail = 1; \
else \
is_fail = 0; \
} while(0)
#define IS_EMPTY_STR (str == end)
#define ON_STR_BEGIN(s) ((s) == str)
#define ON_STR_END(s) ((s) == end)
#ifdef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE
# define DATA_ENSURE_CHECK1 (s < right_range)
# define DATA_ENSURE_CHECK(n) (s + (n) <= right_range)
# define DATA_ENSURE(n) if (s + (n) > right_range) goto fail
# define DATA_ENSURE_CONTINUE(n) if (s + (n) > right_range) continue
# define ABSENT_END_POS right_range
#else
# define DATA_ENSURE_CHECK1 (s < end)
# define DATA_ENSURE_CHECK(n) (s + (n) <= end)
# define DATA_ENSURE(n) if (s + (n) > end) goto fail
# define DATA_ENSURE_CONTINUE(n) if (s + (n) > end) continue
# define ABSENT_END_POS end
#endif /* USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE */
#ifdef USE_CAPTURE_HISTORY
static int
make_capture_history_tree(OnigCaptureTreeNode* node, OnigStackType** kp,
OnigStackType* stk_top, UChar* str, regex_t* reg)
{
int n, r;
OnigCaptureTreeNode* child;
OnigStackType* k = *kp;
while (k < stk_top) {
if (k->type == STK_MEM_START) {
n = k->u.mem.num;
if (n <= ONIG_MAX_CAPTURE_HISTORY_GROUP &&
BIT_STATUS_AT(reg->capture_history, n) != 0) {
child = history_node_new();
CHECK_NULL_RETURN_MEMERR(child);
child->group = n;
child->beg = k->u.mem.pstr - str;
r = history_tree_add_child(node, child);
if (r != 0) {
history_tree_free(child);
return r;
}
*kp = (k + 1);
r = make_capture_history_tree(child, kp, stk_top, str, reg);
if (r != 0) return r;
k = *kp;
child->end = k->u.mem.pstr - str;
}
}
else if (k->type == STK_MEM_END) {
if (k->u.mem.num == node->group) {
node->end = k->u.mem.pstr - str;
*kp = k;
return 0;
}
}
k++;
}
return 1; /* 1: root node ending. */
}
#endif /* USE_CAPTURE_HISTORY */
#ifdef USE_BACKREF_WITH_LEVEL
static int mem_is_in_memp(int mem, int num, UChar* memp)
{
int i;
MemNumType m;
for (i = 0; i < num; i++) {
GET_MEMNUM_INC(m, memp);
if (mem == (int )m) return 1;
}
return 0;
}
static int backref_match_at_nested_level(regex_t* reg,
OnigStackType* top, OnigStackType* stk_base,
int ignore_case, int case_fold_flag,
int nest, int mem_num, UChar* memp, UChar** s, const UChar* send)
{
UChar *ss, *p, *pstart, *pend = NULL_UCHARP;
int level;
OnigStackType* k;
level = 0;
k = top;
k--;
while (k >= stk_base) {
if (k->type == STK_CALL_FRAME) {
level--;
}
else if (k->type == STK_RETURN) {
level++;
}
else if (level == nest) {
if (k->type == STK_MEM_START) {
if (mem_is_in_memp(k->u.mem.num, mem_num, memp)) {
pstart = k->u.mem.pstr;
if (pend != NULL_UCHARP) {
if (pend - pstart > send - *s) return 0; /* or goto next_mem; */
p = pstart;
ss = *s;
if (ignore_case != 0) {
if (string_cmp_ic(reg->enc, case_fold_flag,
pstart, &ss, pend - pstart, send) == 0)
return 0; /* or goto next_mem; */
}
else {
while (p < pend) {
if (*p++ != *ss++) return 0; /* or goto next_mem; */
}
}
*s = ss;
return 1;
}
}
}
else if (k->type == STK_MEM_END) {
if (mem_is_in_memp(k->u.mem.num, mem_num, memp)) {
pend = k->u.mem.pstr;
}
}
}
k--;
}
return 0;
}
#endif /* USE_BACKREF_WITH_LEVEL */
#ifdef ONIG_DEBUG_STATISTICS
# ifdef _WIN32
# include <windows.h>
static LARGE_INTEGER ts, te, freq;
# define GETTIME(t) QueryPerformanceCounter(&(t))
# define TIMEDIFF(te,ts) (unsigned long )(((te).QuadPart - (ts).QuadPart) \
* 1000000 / freq.QuadPart)
# else /* _WIN32 */
# define USE_TIMEOFDAY
# ifdef USE_TIMEOFDAY
# ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
# endif
# ifdef HAVE_UNISTD_H
# include <unistd.h>
# endif
static struct timeval ts, te;
# define GETTIME(t) gettimeofday(&(t), (struct timezone* )0)
# define TIMEDIFF(te,ts) (((te).tv_usec - (ts).tv_usec) + \
(((te).tv_sec - (ts).tv_sec)*1000000))
# else /* USE_TIMEOFDAY */
# ifdef HAVE_SYS_TIMES_H
# include <sys/times.h>
# endif
static struct tms ts, te;
# define GETTIME(t) times(&(t))
# define TIMEDIFF(te,ts) ((te).tms_utime - (ts).tms_utime)
# endif /* USE_TIMEOFDAY */
# endif /* _WIN32 */
static int OpCounter[256];
static int OpPrevCounter[256];
static unsigned long OpTime[256];
static int OpCurr = OP_FINISH;
static int OpPrevTarget = OP_FAIL;
static int MaxStackDepth = 0;
# define MOP_IN(opcode) do {\
if (opcode == OpPrevTarget) OpPrevCounter[OpCurr]++;\
OpCurr = opcode;\
OpCounter[opcode]++;\
GETTIME(ts);\
} while(0)
# define MOP_OUT do {\
GETTIME(te);\
OpTime[OpCurr] += TIMEDIFF(te, ts);\
} while(0)
extern void
onig_statistics_init(void)
{
int i;
for (i = 0; i < 256; i++) {
OpCounter[i] = OpPrevCounter[i] = 0; OpTime[i] = 0;
}
MaxStackDepth = 0;
# ifdef _WIN32
QueryPerformanceFrequency(&freq);
# endif
}
extern void
onig_print_statistics(FILE* f)
{
int i;
fprintf(f, " count prev time\n");
for (i = 0; OnigOpInfo[i].opcode >= 0; i++) {
fprintf(f, "%8d: %8d: %10lu: %s\n",
OpCounter[i], OpPrevCounter[i], OpTime[i], OnigOpInfo[i].name);
}
fprintf(f, "\nmax stack depth: %d\n", MaxStackDepth);
}
# define STACK_INC do {\
stk++;\
if (stk - stk_base > MaxStackDepth) \
MaxStackDepth = stk - stk_base;\
} while(0)
#else /* ONIG_DEBUG_STATISTICS */
# define STACK_INC stk++
# define MOP_IN(opcode)
# define MOP_OUT
#endif /* ONIG_DEBUG_STATISTICS */
#ifdef ONIG_DEBUG_MATCH
static char *
stack_type_str(int stack_type)
{
switch (stack_type) {
case STK_ALT: return "Alt ";
case STK_LOOK_BEHIND_NOT: return "LBNot ";
case STK_POS_NOT: return "PosNot";
case STK_MEM_START: return "MemS ";
case STK_MEM_END: return "MemE ";
case STK_REPEAT_INC: return "RepInc";
case STK_STATE_CHECK_MARK: return "StChMk";
case STK_NULL_CHECK_START: return "NulChS";
case STK_NULL_CHECK_END: return "NulChE";
case STK_MEM_END_MARK: return "MemEMk";
case STK_POS: return "Pos ";
case STK_STOP_BT: return "StopBt";
case STK_REPEAT: return "Rep ";
case STK_CALL_FRAME: return "Call ";
case STK_RETURN: return "Ret ";
case STK_VOID: return "Void ";
case STK_ABSENT_POS: return "AbsPos";
case STK_ABSENT: return "Absent";
default: return " ";
}
}
#endif
/* match data(str - end) from position (sstart). */
/* if sstart == str then set sprev to NULL. */
static OnigPosition
match_at(regex_t* reg, const UChar* str, const UChar* end,
#ifdef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE
const UChar* right_range,
#endif
const UChar* sstart, UChar* sprev, OnigMatchArg* msa)
{
static const UChar FinishCode[] = { OP_FINISH };
int i, num_mem, pop_level;
ptrdiff_t n, best_len;
LengthType tlen, tlen2;
MemNumType mem;
RelAddrType addr;
OnigOptionType option = reg->options;
OnigEncoding encode = reg->enc;
OnigCaseFoldType case_fold_flag = reg->case_fold_flag;
UChar *s, *q, *sbegin;
UChar *p = reg->p;
UChar *pbegin = p;
UChar *pkeep;
char *alloca_base;
char *xmalloc_base = NULL;
OnigStackType *stk_alloc, *stk_base, *stk, *stk_end;
OnigStackType *stkp; /* used as any purpose. */
OnigStackIndex si;
OnigStackIndex *repeat_stk;
OnigStackIndex *mem_start_stk, *mem_end_stk;
#ifdef USE_COMBINATION_EXPLOSION_CHECK
int scv;
unsigned char* state_check_buff = msa->state_check_buff;
int num_comb_exp_check = reg->num_comb_exp_check;
#endif
#if USE_TOKEN_THREADED_VM
# define OP_OFFSET 1
# define VM_LOOP JUMP;
# define VM_LOOP_END
# define CASE(x) L_##x: sbegin = s; OPCODE_EXEC_HOOK;
# define DEFAULT L_DEFAULT:
# define NEXT sprev = sbegin; JUMP
# define JUMP pbegin = p; RB_GNUC_EXTENSION_BLOCK(goto *oplabels[*p++])
RB_GNUC_EXTENSION static const void *oplabels[] = {
&&L_OP_FINISH, /* matching process terminator (no more alternative) */
&&L_OP_END, /* pattern code terminator (success end) */
&&L_OP_EXACT1, /* single byte, N = 1 */
&&L_OP_EXACT2, /* single byte, N = 2 */
&&L_OP_EXACT3, /* single byte, N = 3 */
&&L_OP_EXACT4, /* single byte, N = 4 */
&&L_OP_EXACT5, /* single byte, N = 5 */
&&L_OP_EXACTN, /* single byte */
&&L_OP_EXACTMB2N1, /* mb-length = 2 N = 1 */
&&L_OP_EXACTMB2N2, /* mb-length = 2 N = 2 */
&&L_OP_EXACTMB2N3, /* mb-length = 2 N = 3 */
&&L_OP_EXACTMB2N, /* mb-length = 2 */
&&L_OP_EXACTMB3N, /* mb-length = 3 */
&&L_OP_EXACTMBN, /* other length */
&&L_OP_EXACT1_IC, /* single byte, N = 1, ignore case */
&&L_OP_EXACTN_IC, /* single byte, ignore case */
&&L_OP_CCLASS,
&&L_OP_CCLASS_MB,
&&L_OP_CCLASS_MIX,
&&L_OP_CCLASS_NOT,
&&L_OP_CCLASS_MB_NOT,
&&L_OP_CCLASS_MIX_NOT,
&&L_OP_ANYCHAR, /* "." */
&&L_OP_ANYCHAR_ML, /* "." multi-line */
&&L_OP_ANYCHAR_STAR, /* ".*" */
&&L_OP_ANYCHAR_ML_STAR, /* ".*" multi-line */
&&L_OP_ANYCHAR_STAR_PEEK_NEXT,
&&L_OP_ANYCHAR_ML_STAR_PEEK_NEXT,
&&L_OP_WORD,
&&L_OP_NOT_WORD,
&&L_OP_WORD_BOUND,
&&L_OP_NOT_WORD_BOUND,
# ifdef USE_WORD_BEGIN_END
&&L_OP_WORD_BEGIN,
&&L_OP_WORD_END,
# else
&&L_DEFAULT,
&&L_DEFAULT,
# endif
&&L_OP_ASCII_WORD,
&&L_OP_NOT_ASCII_WORD,
&&L_OP_ASCII_WORD_BOUND,
&&L_OP_NOT_ASCII_WORD_BOUND,
# ifdef USE_WORD_BEGIN_END
&&L_OP_ASCII_WORD_BEGIN,
&&L_OP_ASCII_WORD_END,
# else
&&L_DEFAULT,
&&L_DEFAULT,
# endif
&&L_OP_BEGIN_BUF,
&&L_OP_END_BUF,
&&L_OP_BEGIN_LINE,
&&L_OP_END_LINE,
&&L_OP_SEMI_END_BUF,
&&L_OP_BEGIN_POSITION,
&&L_OP_BACKREF1,
&&L_OP_BACKREF2,
&&L_OP_BACKREFN,
&&L_OP_BACKREFN_IC,
&&L_OP_BACKREF_MULTI,
&&L_OP_BACKREF_MULTI_IC,
# ifdef USE_BACKREF_WITH_LEVEL
&&L_OP_BACKREF_WITH_LEVEL, /* \k<xxx+n>, \k<xxx-n> */
# else
&&L_DEFAULT,
# endif
&&L_OP_MEMORY_START,
&&L_OP_MEMORY_START_PUSH, /* push back-tracker to stack */
&&L_OP_MEMORY_END_PUSH, /* push back-tracker to stack */
# ifdef USE_SUBEXP_CALL
&&L_OP_MEMORY_END_PUSH_REC, /* push back-tracker to stack */
# else
&&L_DEFAULT,
# endif
&&L_OP_MEMORY_END,
# ifdef USE_SUBEXP_CALL
&&L_OP_MEMORY_END_REC, /* push marker to stack */
# else
&&L_DEFAULT,
# endif
&&L_OP_KEEP,
&&L_OP_FAIL, /* pop stack and move */
&&L_OP_JUMP,
&&L_OP_PUSH,
&&L_OP_POP,
# ifdef USE_OP_PUSH_OR_JUMP_EXACT
&&L_OP_PUSH_OR_JUMP_EXACT1, /* if match exact then push, else jump. */
# else
&&L_DEFAULT,
# endif
&&L_OP_PUSH_IF_PEEK_NEXT, /* if match exact then push, else none. */
&&L_OP_REPEAT, /* {n,m} */
&&L_OP_REPEAT_NG, /* {n,m}? (non greedy) */
&&L_OP_REPEAT_INC,
&&L_OP_REPEAT_INC_NG, /* non greedy */
&&L_OP_REPEAT_INC_SG, /* search and get in stack */
&&L_OP_REPEAT_INC_NG_SG, /* search and get in stack (non greedy) */
&&L_OP_NULL_CHECK_START, /* null loop checker start */
&&L_OP_NULL_CHECK_END, /* null loop checker end */
# ifdef USE_MONOMANIAC_CHECK_CAPTURES_IN_ENDLESS_REPEAT
&&L_OP_NULL_CHECK_END_MEMST, /* null loop checker end (with capture status) */
# else
&&L_DEFAULT,
# endif
# ifdef USE_SUBEXP_CALL
&&L_OP_NULL_CHECK_END_MEMST_PUSH, /* with capture status and push check-end */
# else
&&L_DEFAULT,
# endif
&&L_OP_PUSH_POS, /* (?=...) start */
&&L_OP_POP_POS, /* (?=...) end */
&&L_OP_PUSH_POS_NOT, /* (?!...) start */
&&L_OP_FAIL_POS, /* (?!...) end */
&&L_OP_PUSH_STOP_BT, /* (?>...) start */
&&L_OP_POP_STOP_BT, /* (?>...) end */
&&L_OP_LOOK_BEHIND, /* (?<=...) start (no needs end opcode) */
&&L_OP_PUSH_LOOK_BEHIND_NOT, /* (?<!...) start */
&&L_OP_FAIL_LOOK_BEHIND_NOT, /* (?<!...) end */
&&L_OP_PUSH_ABSENT_POS, /* (?~...) start */
&&L_OP_ABSENT, /* (?~...) start of inner loop */
&&L_OP_ABSENT_END, /* (?~...) end */
# ifdef USE_SUBEXP_CALL
&&L_OP_CALL, /* \g<name> */
&&L_OP_RETURN,
# else
&&L_DEFAULT,
&&L_DEFAULT,
# endif
&&L_OP_CONDITION,
# ifdef USE_COMBINATION_EXPLOSION_CHECK
&&L_OP_STATE_CHECK_PUSH, /* combination explosion check and push */
&&L_OP_STATE_CHECK_PUSH_OR_JUMP, /* check ok -> push, else jump */
&&L_OP_STATE_CHECK, /* check only */
# else
&&L_DEFAULT,
&&L_DEFAULT,
&&L_DEFAULT,
# endif
# ifdef USE_COMBINATION_EXPLOSION_CHECK
&&L_OP_STATE_CHECK_ANYCHAR_STAR,
&&L_OP_STATE_CHECK_ANYCHAR_ML_STAR,
# else
&&L_DEFAULT,
&&L_DEFAULT,
# endif
/* no need: IS_DYNAMIC_OPTION() == 0 */
# if 0 /* no need: IS_DYNAMIC_OPTION() == 0 */
&&L_OP_SET_OPTION_PUSH, /* set option and push recover option */
&&L_OP_SET_OPTION /* set option */
# else
&&L_DEFAULT,
&&L_DEFAULT
# endif
};
#else /* USE_TOKEN_THREADED_VM */
# define OP_OFFSET 0
# define VM_LOOP \
while (1) { \
OPCODE_EXEC_HOOK; \
pbegin = p; \
sbegin = s; \
switch (*p++) {
# define VM_LOOP_END } sprev = sbegin; }
# define CASE(x) case x:
# define DEFAULT default:
# define NEXT break
# define JUMP continue; break
#endif /* USE_TOKEN_THREADED_VM */
#ifdef USE_SUBEXP_CALL
/* Stack #0 is used to store the pattern itself and used for (?R), \g<0>,
etc. Additional space is required. */
# define ADD_NUMMEM 1
#else
/* Stack #0 not is used. */
# define ADD_NUMMEM 0
#endif
n = reg->num_repeat + (reg->num_mem + ADD_NUMMEM) * 2;
STACK_INIT(alloca_base, xmalloc_base, n, INIT_MATCH_STACK_SIZE);
pop_level = reg->stack_pop_level;
num_mem = reg->num_mem;
repeat_stk = (OnigStackIndex* )alloca_base;
mem_start_stk = (OnigStackIndex* )(repeat_stk + reg->num_repeat);
mem_end_stk = mem_start_stk + (num_mem + ADD_NUMMEM);
{
OnigStackIndex *pp = mem_start_stk;
for (; pp < repeat_stk + n; pp += 2) {
pp[0] = INVALID_STACK_INDEX;
pp[1] = INVALID_STACK_INDEX;
}
}
#ifndef USE_SUBEXP_CALL
mem_start_stk--; /* for index start from 1,
mem_start_stk[1]..mem_start_stk[num_mem] */
mem_end_stk--; /* for index start from 1,
mem_end_stk[1]..mem_end_stk[num_mem] */
#endif
#ifdef ONIG_DEBUG_MATCH
fprintf(stderr, "match_at: str: %"PRIuPTR" (%p), end: %"PRIuPTR" (%p), start: %"PRIuPTR" (%p), sprev: %"PRIuPTR" (%p)\n",
(uintptr_t )str, str, (uintptr_t )end, end, (uintptr_t )sstart, sstart, (uintptr_t )sprev, sprev);
fprintf(stderr, "size: %d, start offset: %d\n",
(int )(end - str), (int )(sstart - str));
fprintf(stderr, "\n ofs> str stk:type addr:opcode\n");
#endif
STACK_PUSH_ENSURED(STK_ALT, (UChar* )FinishCode); /* bottom stack */
best_len = ONIG_MISMATCH;
s = (UChar* )sstart;
pkeep = (UChar* )sstart;
#ifdef ONIG_DEBUG_MATCH
# define OPCODE_EXEC_HOOK \
if (s) { \
UChar *op, *q, *bp, buf[50]; \
int len; \
op = p - OP_OFFSET; \
fprintf(stderr, "%4"PRIdPTR"> \"", (*op == OP_FINISH) ? (ptrdiff_t )-1 : s - str); \
bp = buf; \
q = s; \
if (*op != OP_FINISH) { /* s may not be a valid pointer if OP_FINISH. */ \
for (i = 0; i < 7 && q < end; i++) { \
len = enclen(encode, q, end); \
while (len-- > 0) *bp++ = *q++; \
} \
if (q < end) { xmemcpy(bp, "...", 3); bp += 3; } \
} \
xmemcpy(bp, "\"", 1); bp += 1; \
*bp = 0; \
fputs((char* )buf, stderr); \
for (i = 0; i < 20 - (bp - buf); i++) fputc(' ', stderr); \
fprintf(stderr, "%4"PRIdPTR":%s %4"PRIdPTR":", \
stk - stk_base - 1, \
(stk > stk_base) ? stack_type_str(stk[-1].type) : " ", \
(op == FinishCode) ? (ptrdiff_t )-1 : op - reg->p); \
onig_print_compiled_byte_code(stderr, op, reg->p+reg->used, NULL, encode); \
fprintf(stderr, "\n"); \
}
#else
# define OPCODE_EXEC_HOOK ((void) 0)
#endif
VM_LOOP {
CASE(OP_END) MOP_IN(OP_END);
n = s - sstart;
if (n > best_len) {
OnigRegion* region;
#ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE
if (IS_FIND_LONGEST(option)) {
if (n > msa->best_len) {
msa->best_len = n;
msa->best_s = (UChar* )sstart;
}
else
goto end_best_len;
}
#endif
best_len = n;
region = msa->region;
if (region) {
region->beg[0] = ((pkeep > s) ? s : pkeep) - str;
region->end[0] = s - str;
for (i = 1; i <= num_mem; i++) {
if (mem_end_stk[i] != INVALID_STACK_INDEX) {
if (BIT_STATUS_AT(reg->bt_mem_start, i))
region->beg[i] = STACK_AT(mem_start_stk[i])->u.mem.pstr - str;
else
region->beg[i] = (UChar* )((void* )mem_start_stk[i]) - str;
region->end[i] = (BIT_STATUS_AT(reg->bt_mem_end, i)
? STACK_AT(mem_end_stk[i])->u.mem.pstr
: (UChar* )((void* )mem_end_stk[i])) - str;
}
else {
region->beg[i] = region->end[i] = ONIG_REGION_NOTPOS;
}
}
#ifdef USE_CAPTURE_HISTORY
if (reg->capture_history != 0) {
int r;
OnigCaptureTreeNode* node;
if (IS_NULL(region->history_root)) {
region->history_root = node = history_node_new();
CHECK_NULL_RETURN_MEMERR(node);
}
else {
node = region->history_root;
history_tree_clear(node);
}
node->group = 0;
node->beg = ((pkeep > s) ? s : pkeep) - str;
node->end = s - str;
stkp = stk_base;
r = make_capture_history_tree(region->history_root, &stkp,
stk, (UChar* )str, reg);
if (r < 0) {
best_len = r; /* error code */
goto finish;
}
}
#endif /* USE_CAPTURE_HISTORY */
} /* if (region) */
} /* n > best_len */
#ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE
end_best_len:
#endif
MOP_OUT;
if (IS_FIND_CONDITION(option)) {
if (IS_FIND_NOT_EMPTY(option) && s == sstart) {
best_len = ONIG_MISMATCH;
goto fail; /* for retry */
}
if (IS_FIND_LONGEST(option) && DATA_ENSURE_CHECK1) {
goto fail; /* for retry */
}
}
/* default behavior: return first-matching result. */
goto finish;
NEXT;
CASE(OP_EXACT1) MOP_IN(OP_EXACT1);
DATA_ENSURE(1);
if (*p != *s) goto fail;
p++; s++;
MOP_OUT;
NEXT;
CASE(OP_EXACT1_IC) MOP_IN(OP_EXACT1_IC);
{
int len;
UChar *q, lowbuf[ONIGENC_MBC_CASE_FOLD_MAXLEN];
DATA_ENSURE(1);
len = ONIGENC_MBC_CASE_FOLD(encode,
/* DISABLE_CASE_FOLD_MULTI_CHAR(case_fold_flag), */
case_fold_flag,
&s, end, lowbuf);
DATA_ENSURE(0);
q = lowbuf;
while (len-- > 0) {
if (*p != *q) {
goto fail;
}
p++; q++;
}
}
MOP_OUT;
NEXT;
CASE(OP_EXACT2) MOP_IN(OP_EXACT2);
DATA_ENSURE(2);
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
sprev = s;
p++; s++;
MOP_OUT;
JUMP;
CASE(OP_EXACT3) MOP_IN(OP_EXACT3);
DATA_ENSURE(3);
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
sprev = s;
p++; s++;
MOP_OUT;
JUMP;
CASE(OP_EXACT4) MOP_IN(OP_EXACT4);
DATA_ENSURE(4);
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
sprev = s;
p++; s++;
MOP_OUT;
JUMP;
CASE(OP_EXACT5) MOP_IN(OP_EXACT5);
DATA_ENSURE(5);
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
sprev = s;
p++; s++;
MOP_OUT;
JUMP;
CASE(OP_EXACTN) MOP_IN(OP_EXACTN);
GET_LENGTH_INC(tlen, p);
DATA_ENSURE(tlen);
while (tlen-- > 0) {
if (*p++ != *s++) goto fail;
}
sprev = s - 1;
MOP_OUT;
JUMP;
CASE(OP_EXACTN_IC) MOP_IN(OP_EXACTN_IC);
{
int len;
UChar *q, *endp, lowbuf[ONIGENC_MBC_CASE_FOLD_MAXLEN];
GET_LENGTH_INC(tlen, p);
endp = p + tlen;
while (p < endp) {
sprev = s;
DATA_ENSURE(1);
len = ONIGENC_MBC_CASE_FOLD(encode,
/* DISABLE_CASE_FOLD_MULTI_CHAR(case_fold_flag), */
case_fold_flag,
&s, end, lowbuf);
DATA_ENSURE(0);
q = lowbuf;
while (len-- > 0) {
if (*p != *q) goto fail;
p++; q++;
}
}
}
MOP_OUT;
JUMP;
CASE(OP_EXACTMB2N1) MOP_IN(OP_EXACTMB2N1);
DATA_ENSURE(2);
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
MOP_OUT;
NEXT;
CASE(OP_EXACTMB2N2) MOP_IN(OP_EXACTMB2N2);
DATA_ENSURE(4);
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
sprev = s;
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
MOP_OUT;
JUMP;
CASE(OP_EXACTMB2N3) MOP_IN(OP_EXACTMB2N3);
DATA_ENSURE(6);
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
sprev = s;
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
MOP_OUT;
JUMP;
CASE(OP_EXACTMB2N) MOP_IN(OP_EXACTMB2N);
GET_LENGTH_INC(tlen, p);
DATA_ENSURE(tlen * 2);
while (tlen-- > 0) {
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
}
sprev = s - 2;
MOP_OUT;
JUMP;
CASE(OP_EXACTMB3N) MOP_IN(OP_EXACTMB3N);
GET_LENGTH_INC(tlen, p);
DATA_ENSURE(tlen * 3);
while (tlen-- > 0) {
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
}
sprev = s - 3;
MOP_OUT;
JUMP;
CASE(OP_EXACTMBN) MOP_IN(OP_EXACTMBN);
GET_LENGTH_INC(tlen, p); /* mb-len */
GET_LENGTH_INC(tlen2, p); /* string len */
tlen2 *= tlen;
DATA_ENSURE(tlen2);
while (tlen2-- > 0) {
if (*p != *s) goto fail;
p++; s++;
}
sprev = s - tlen;
MOP_OUT;
JUMP;
CASE(OP_CCLASS) MOP_IN(OP_CCLASS);
DATA_ENSURE(1);
if (BITSET_AT(((BitSetRef )p), *s) == 0) goto fail;
p += SIZE_BITSET;
s += enclen(encode, s, end); /* OP_CCLASS can match mb-code. \D, \S */
MOP_OUT;
NEXT;
CASE(OP_CCLASS_MB) MOP_IN(OP_CCLASS_MB);
if (! ONIGENC_IS_MBC_HEAD(encode, s, end)) goto fail;
cclass_mb:
GET_LENGTH_INC(tlen, p);
{
OnigCodePoint code;
UChar *ss;
int mb_len;
DATA_ENSURE(1);
mb_len = enclen(encode, s, end);
DATA_ENSURE(mb_len);
ss = s;
s += mb_len;
code = ONIGENC_MBC_TO_CODE(encode, ss, s);
#ifdef PLATFORM_UNALIGNED_WORD_ACCESS
if (! onig_is_in_code_range(p, code)) goto fail;
#else
q = p;
ALIGNMENT_RIGHT(q);
if (! onig_is_in_code_range(q, code)) goto fail;
#endif
}
p += tlen;
MOP_OUT;
NEXT;
CASE(OP_CCLASS_MIX) MOP_IN(OP_CCLASS_MIX);
DATA_ENSURE(1);
if (ONIGENC_IS_MBC_HEAD(encode, s, end)) {
p += SIZE_BITSET;
goto cclass_mb;
}
else {
if (BITSET_AT(((BitSetRef )p), *s) == 0)
goto fail;
p += SIZE_BITSET;
GET_LENGTH_INC(tlen, p);
p += tlen;
s++;
}
MOP_OUT;
NEXT;
CASE(OP_CCLASS_NOT) MOP_IN(OP_CCLASS_NOT);
DATA_ENSURE(1);
if (BITSET_AT(((BitSetRef )p), *s) != 0) goto fail;
p += SIZE_BITSET;
s += enclen(encode, s, end);
MOP_OUT;
NEXT;
CASE(OP_CCLASS_MB_NOT) MOP_IN(OP_CCLASS_MB_NOT);
DATA_ENSURE(1);
if (! ONIGENC_IS_MBC_HEAD(encode, s, end)) {
s++;
GET_LENGTH_INC(tlen, p);
p += tlen;
goto cc_mb_not_success;
}
cclass_mb_not:
GET_LENGTH_INC(tlen, p);
{
OnigCodePoint code;
UChar *ss;
int mb_len = enclen(encode, s, end);
if (! DATA_ENSURE_CHECK(mb_len)) {
DATA_ENSURE(1);
s = (UChar* )end;
p += tlen;
goto cc_mb_not_success;
}
ss = s;
s += mb_len;
code = ONIGENC_MBC_TO_CODE(encode, ss, s);
#ifdef PLATFORM_UNALIGNED_WORD_ACCESS
if (onig_is_in_code_range(p, code)) goto fail;
#else
q = p;
ALIGNMENT_RIGHT(q);
if (onig_is_in_code_range(q, code)) goto fail;
#endif
}
p += tlen;
cc_mb_not_success:
MOP_OUT;
NEXT;
CASE(OP_CCLASS_MIX_NOT) MOP_IN(OP_CCLASS_MIX_NOT);
DATA_ENSURE(1);
if (ONIGENC_IS_MBC_HEAD(encode, s, end)) {
p += SIZE_BITSET;
goto cclass_mb_not;
}
else {
if (BITSET_AT(((BitSetRef )p), *s) != 0)
goto fail;
p += SIZE_BITSET;
GET_LENGTH_INC(tlen, p);
p += tlen;
s++;
}
MOP_OUT;
NEXT;
CASE(OP_ANYCHAR) MOP_IN(OP_ANYCHAR);
DATA_ENSURE(1);
n = enclen(encode, s, end);
DATA_ENSURE(n);
if (ONIGENC_IS_MBC_NEWLINE_EX(encode, s, str, end, option, 0)) goto fail;
s += n;
MOP_OUT;
NEXT;
CASE(OP_ANYCHAR_ML) MOP_IN(OP_ANYCHAR_ML);
DATA_ENSURE(1);
n = enclen(encode, s, end);
DATA_ENSURE(n);
s += n;
MOP_OUT;
NEXT;
CASE(OP_ANYCHAR_STAR) MOP_IN(OP_ANYCHAR_STAR);
while (DATA_ENSURE_CHECK1) {
DO_CACHE_MATCH_OPT(reg, stk_base, repeat_stk, msa->enable_cache_match_opt, pbegin, msa->num_cache_table, msa->num_cache_opcode, msa->cache_index_table, s - str, msa->match_cache);
STACK_PUSH_ALT(p, s, sprev, pkeep);
n = enclen(encode, s, end);
DATA_ENSURE(n);
if (ONIGENC_IS_MBC_NEWLINE_EX(encode, s, str, end, option, 0)) goto fail;
sprev = s;
s += n;
}
MOP_OUT;
JUMP;
CASE(OP_ANYCHAR_ML_STAR) MOP_IN(OP_ANYCHAR_ML_STAR);
while (DATA_ENSURE_CHECK1) {
DO_CACHE_MATCH_OPT(reg, stk_base, repeat_stk, msa->enable_cache_match_opt, pbegin, msa->num_cache_table, msa->num_cache_opcode, msa->cache_index_table, s - str, msa->match_cache);
STACK_PUSH_ALT(p, s, sprev, pkeep);
n = enclen(encode, s, end);
if (n > 1) {
DATA_ENSURE(n);
sprev = s;
s += n;
}
else {
sprev = s;
s++;
}
}
MOP_OUT;
JUMP;
CASE(OP_ANYCHAR_STAR_PEEK_NEXT) MOP_IN(OP_ANYCHAR_STAR_PEEK_NEXT);
while (DATA_ENSURE_CHECK1) {
if (*p == *s) {
DO_CACHE_MATCH_OPT(reg, stk_base, repeat_stk, msa->enable_cache_match_opt, pbegin, msa->num_cache_table, msa->num_cache_opcode, msa->cache_index_table, end - s, msa->match_cache);
STACK_PUSH_ALT(p + 1, s, sprev, pkeep);
}
n = enclen(encode, s, end);
DATA_ENSURE(n);
if (ONIGENC_IS_MBC_NEWLINE_EX(encode, s, str, end, option, 0)) goto fail;
sprev = s;
s += n;
}
p++;
MOP_OUT;
NEXT;
CASE(OP_ANYCHAR_ML_STAR_PEEK_NEXT)MOP_IN(OP_ANYCHAR_ML_STAR_PEEK_NEXT);
while (DATA_ENSURE_CHECK1) {
if (*p == *s) {
DO_CACHE_MATCH_OPT(reg, stk_base, repeat_stk, msa->enable_cache_match_opt, pbegin, msa->num_cache_table, msa->num_cache_opcode, msa->cache_index_table, s - str, msa->match_cache);
STACK_PUSH_ALT(p + 1, s, sprev, pkeep);
}
n = enclen(encode, s, end);
if (n > 1) {
DATA_ENSURE(n);
sprev = s;
s += n;
}
else {
sprev = s;
s++;
}
}
p++;
MOP_OUT;
NEXT;
#ifdef USE_COMBINATION_EXPLOSION_CHECK
CASE(OP_STATE_CHECK_ANYCHAR_STAR) MOP_IN(OP_STATE_CHECK_ANYCHAR_STAR);
GET_STATE_CHECK_NUM_INC(mem, p);
while (DATA_ENSURE_CHECK1) {
STATE_CHECK_VAL(scv, mem);
if (scv) goto fail;
STACK_PUSH_ALT_WITH_STATE_CHECK(p, s, sprev, mem, pkeep);
n = enclen(encode, s, end);
DATA_ENSURE(n);
if (ONIGENC_IS_MBC_NEWLINE_EX(encode, s, str, end, option, 0)) goto fail;
sprev = s;
s += n;
}
MOP_OUT;
NEXT;
CASE(OP_STATE_CHECK_ANYCHAR_ML_STAR)
MOP_IN(OP_STATE_CHECK_ANYCHAR_ML_STAR);
GET_STATE_CHECK_NUM_INC(mem, p);
while (DATA_ENSURE_CHECK1) {
STATE_CHECK_VAL(scv, mem);
if (scv) goto fail;
STACK_PUSH_ALT_WITH_STATE_CHECK(p, s, sprev, mem, pkeep);
n = enclen(encode, s, end);
if (n > 1) {
DATA_ENSURE(n);
sprev = s;
s += n;
}
else {
sprev = s;
s++;
}
}
MOP_OUT;
NEXT;
#endif /* USE_COMBINATION_EXPLOSION_CHECK */
CASE(OP_WORD) MOP_IN(OP_WORD);
DATA_ENSURE(1);
if (! ONIGENC_IS_MBC_WORD(encode, s, end))
goto fail;
s += enclen(encode, s, end);
MOP_OUT;
NEXT;
CASE(OP_ASCII_WORD) MOP_IN(OP_ASCII_WORD);
DATA_ENSURE(1);
if (! ONIGENC_IS_MBC_ASCII_WORD(encode, s, end))
goto fail;
s += enclen(encode, s, end);
MOP_OUT;
NEXT;
CASE(OP_NOT_WORD) MOP_IN(OP_NOT_WORD);
DATA_ENSURE(1);
if (ONIGENC_IS_MBC_WORD(encode, s, end))
goto fail;
s += enclen(encode, s, end);
MOP_OUT;
NEXT;
CASE(OP_NOT_ASCII_WORD) MOP_IN(OP_NOT_ASCII_WORD);
DATA_ENSURE(1);
if (ONIGENC_IS_MBC_ASCII_WORD(encode, s, end))
goto fail;
s += enclen(encode, s, end);
MOP_OUT;
NEXT;
CASE(OP_WORD_BOUND) MOP_IN(OP_WORD_BOUND);
if (ON_STR_BEGIN(s)) {
DATA_ENSURE(1);
if (! ONIGENC_IS_MBC_WORD(encode, s, end))
goto fail;
}
else if (ON_STR_END(s)) {
if (! ONIGENC_IS_MBC_WORD(encode, sprev, end))
goto fail;
}
else {
if (ONIGENC_IS_MBC_WORD(encode, s, end)
== ONIGENC_IS_MBC_WORD(encode, sprev, end))
goto fail;
}
MOP_OUT;
JUMP;
CASE(OP_ASCII_WORD_BOUND) MOP_IN(OP_ASCII_WORD_BOUND);
if (ON_STR_BEGIN(s)) {
DATA_ENSURE(1);
if (! ONIGENC_IS_MBC_ASCII_WORD(encode, s, end))
goto fail;
}
else if (ON_STR_END(s)) {
if (! ONIGENC_IS_MBC_ASCII_WORD(encode, sprev, end))
goto fail;
}
else {
if (ONIGENC_IS_MBC_ASCII_WORD(encode, s, end)
== ONIGENC_IS_MBC_ASCII_WORD(encode, sprev, end))
goto fail;
}
MOP_OUT;
JUMP;
CASE(OP_NOT_WORD_BOUND) MOP_IN(OP_NOT_WORD_BOUND);
if (ON_STR_BEGIN(s)) {
if (DATA_ENSURE_CHECK1 && ONIGENC_IS_MBC_WORD(encode, s, end))
goto fail;
}
else if (ON_STR_END(s)) {
if (ONIGENC_IS_MBC_WORD(encode, sprev, end))
goto fail;
}
else {
if (ONIGENC_IS_MBC_WORD(encode, s, end)
!= ONIGENC_IS_MBC_WORD(encode, sprev, end))
goto fail;
}
MOP_OUT;
JUMP;
CASE(OP_NOT_ASCII_WORD_BOUND) MOP_IN(OP_NOT_ASCII_WORD_BOUND);
if (ON_STR_BEGIN(s)) {
if (DATA_ENSURE_CHECK1 && ONIGENC_IS_MBC_ASCII_WORD(encode, s, end))
goto fail;
}
else if (ON_STR_END(s)) {
if (ONIGENC_IS_MBC_ASCII_WORD(encode, sprev, end))
goto fail;
}
else {
if (ONIGENC_IS_MBC_ASCII_WORD(encode, s, end)
!= ONIGENC_IS_MBC_ASCII_WORD(encode, sprev, end))
goto fail;
}
MOP_OUT;
JUMP;
#ifdef USE_WORD_BEGIN_END
CASE(OP_WORD_BEGIN) MOP_IN(OP_WORD_BEGIN);
if (DATA_ENSURE_CHECK1 && ONIGENC_IS_MBC_WORD(encode, s, end)) {
if (ON_STR_BEGIN(s) || !ONIGENC_IS_MBC_WORD(encode, sprev, end)) {
MOP_OUT;
JUMP;
}
}
goto fail;
NEXT;
CASE(OP_ASCII_WORD_BEGIN) MOP_IN(OP_ASCII_WORD_BEGIN);
if (DATA_ENSURE_CHECK1 && ONIGENC_IS_MBC_ASCII_WORD(encode, s, end)) {
if (ON_STR_BEGIN(s) || !ONIGENC_IS_MBC_ASCII_WORD(encode, sprev, end)) {
MOP_OUT;
JUMP;
}
}
goto fail;
NEXT;
CASE(OP_WORD_END) MOP_IN(OP_WORD_END);
if (!ON_STR_BEGIN(s) && ONIGENC_IS_MBC_WORD(encode, sprev, end)) {
if (ON_STR_END(s) || !ONIGENC_IS_MBC_WORD(encode, s, end)) {
MOP_OUT;
JUMP;
}
}
goto fail;
NEXT;
CASE(OP_ASCII_WORD_END) MOP_IN(OP_ASCII_WORD_END);
if (!ON_STR_BEGIN(s) && ONIGENC_IS_MBC_ASCII_WORD(encode, sprev, end)) {
if (ON_STR_END(s) || !ONIGENC_IS_MBC_ASCII_WORD(encode, s, end)) {
MOP_OUT;
JUMP;
}
}
goto fail;
NEXT;
#endif
CASE(OP_BEGIN_BUF) MOP_IN(OP_BEGIN_BUF);
if (! ON_STR_BEGIN(s)) goto fail;
if (IS_NOTBOS(msa->options)) goto fail;
MOP_OUT;
JUMP;
CASE(OP_END_BUF) MOP_IN(OP_END_BUF);
if (! ON_STR_END(s)) goto fail;
if (IS_NOTEOS(msa->options)) goto fail;
MOP_OUT;
JUMP;
CASE(OP_BEGIN_LINE) MOP_IN(OP_BEGIN_LINE);
if (ON_STR_BEGIN(s)) {
if (IS_NOTBOL(msa->options)) goto fail;
MOP_OUT;
JUMP;
}
else if (ONIGENC_IS_MBC_NEWLINE(encode, sprev, end)
#ifdef USE_CRNL_AS_LINE_TERMINATOR
&& !(IS_NEWLINE_CRLF(option)
&& ONIGENC_IS_MBC_CRNL(encode, sprev, end))
#endif
&& !ON_STR_END(s)) {
MOP_OUT;
JUMP;
}
goto fail;
NEXT;
CASE(OP_END_LINE) MOP_IN(OP_END_LINE);
if (ON_STR_END(s)) {
#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE
if (IS_EMPTY_STR || !ONIGENC_IS_MBC_NEWLINE_EX(encode, sprev, str, end, option, 1)) {
#endif
if (IS_NOTEOL(msa->options)) goto fail;
MOP_OUT;
JUMP;
#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE
}
#endif
}
else if (ONIGENC_IS_MBC_NEWLINE_EX(encode, s, str, end, option, 1)) {
MOP_OUT;
JUMP;
}
goto fail;
NEXT;
CASE(OP_SEMI_END_BUF) MOP_IN(OP_SEMI_END_BUF);
if (ON_STR_END(s)) {
#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE
if (IS_EMPTY_STR || !ONIGENC_IS_MBC_NEWLINE_EX(encode, sprev, str, end, option, 1)) {
#endif
if (IS_NOTEOL(msa->options)) goto fail;
MOP_OUT;
JUMP;
#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE
}
#endif
}
else if (ONIGENC_IS_MBC_NEWLINE_EX(encode, s, str, end, option, 1)) {
UChar* ss = s + enclen(encode, s, end);
if (ON_STR_END(ss)) {
MOP_OUT;
JUMP;
}
#ifdef USE_CRNL_AS_LINE_TERMINATOR
else if (IS_NEWLINE_CRLF(option)
&& ONIGENC_IS_MBC_CRNL(encode, s, end)) {
ss += enclen(encode, ss, end);
if (ON_STR_END(ss)) {
MOP_OUT;
JUMP;
}
}
#endif
}
goto fail;
NEXT;
CASE(OP_BEGIN_POSITION) MOP_IN(OP_BEGIN_POSITION);
if (s != msa->gpos)
goto fail;
MOP_OUT;
JUMP;
CASE(OP_MEMORY_START_PUSH) MOP_IN(OP_MEMORY_START_PUSH);
GET_MEMNUM_INC(mem, p);
STACK_PUSH_MEM_START(mem, s);
MOP_OUT;
JUMP;
CASE(OP_MEMORY_START) MOP_IN(OP_MEMORY_START);
GET_MEMNUM_INC(mem, p);
mem_start_stk[mem] = (OnigStackIndex )((void* )s);
mem_end_stk[mem] = INVALID_STACK_INDEX;
MOP_OUT;
JUMP;
CASE(OP_MEMORY_END_PUSH) MOP_IN(OP_MEMORY_END_PUSH);
GET_MEMNUM_INC(mem, p);
STACK_PUSH_MEM_END(mem, s);
MOP_OUT;
JUMP;
CASE(OP_MEMORY_END) MOP_IN(OP_MEMORY_END);
GET_MEMNUM_INC(mem, p);
mem_end_stk[mem] = (OnigStackIndex )((void* )s);
MOP_OUT;
JUMP;
CASE(OP_KEEP) MOP_IN(OP_KEEP);
pkeep = s;
MOP_OUT;
JUMP;
#ifdef USE_SUBEXP_CALL
CASE(OP_MEMORY_END_PUSH_REC) MOP_IN(OP_MEMORY_END_PUSH_REC);
GET_MEMNUM_INC(mem, p);
STACK_GET_MEM_START(mem, stkp); /* should be before push mem-end. */
STACK_PUSH_MEM_END(mem, s);
mem_start_stk[mem] = GET_STACK_INDEX(stkp);
MOP_OUT;
JUMP;
CASE(OP_MEMORY_END_REC) MOP_IN(OP_MEMORY_END_REC);
GET_MEMNUM_INC(mem, p);
mem_end_stk[mem] = (OnigStackIndex )((void* )s);
STACK_GET_MEM_START(mem, stkp);
if (BIT_STATUS_AT(reg->bt_mem_start, mem))
mem_start_stk[mem] = GET_STACK_INDEX(stkp);
else
mem_start_stk[mem] = (OnigStackIndex )((void* )stkp->u.mem.pstr);
STACK_PUSH_MEM_END_MARK(mem);
MOP_OUT;
JUMP;
#endif
CASE(OP_BACKREF1) MOP_IN(OP_BACKREF1);
mem = 1;
goto backref;
NEXT;
CASE(OP_BACKREF2) MOP_IN(OP_BACKREF2);
mem = 2;
goto backref;
NEXT;
CASE(OP_BACKREFN) MOP_IN(OP_BACKREFN);
GET_MEMNUM_INC(mem, p);
backref:
{
int len;
UChar *pstart, *pend;
/* if you want to remove following line,
you should check in parse and compile time. */
if (mem > num_mem) goto fail;
if (mem_end_stk[mem] == INVALID_STACK_INDEX) goto fail;
if (mem_start_stk[mem] == INVALID_STACK_INDEX) goto fail;
if (BIT_STATUS_AT(reg->bt_mem_start, mem))
pstart = STACK_AT(mem_start_stk[mem])->u.mem.pstr;
else
pstart = (UChar* )((void* )mem_start_stk[mem]);
pend = (BIT_STATUS_AT(reg->bt_mem_end, mem)
? STACK_AT(mem_end_stk[mem])->u.mem.pstr
: (UChar* )((void* )mem_end_stk[mem]));
n = pend - pstart;
DATA_ENSURE(n);
sprev = s;
STRING_CMP(pstart, s, n);
while (sprev + (len = enclen(encode, sprev, end)) < s)
sprev += len;
MOP_OUT;
JUMP;
}
CASE(OP_BACKREFN_IC) MOP_IN(OP_BACKREFN_IC);
GET_MEMNUM_INC(mem, p);
{
int len;
UChar *pstart, *pend;
/* if you want to remove following line,
you should check in parse and compile time. */
if (mem > num_mem) goto fail;
if (mem_end_stk[mem] == INVALID_STACK_INDEX) goto fail;
if (mem_start_stk[mem] == INVALID_STACK_INDEX) goto fail;
if (BIT_STATUS_AT(reg->bt_mem_start, mem))
pstart = STACK_AT(mem_start_stk[mem])->u.mem.pstr;
else
pstart = (UChar* )((void* )mem_start_stk[mem]);
pend = (BIT_STATUS_AT(reg->bt_mem_end, mem)
? STACK_AT(mem_end_stk[mem])->u.mem.pstr
: (UChar* )((void* )mem_end_stk[mem]));
n = pend - pstart;
DATA_ENSURE(n);
sprev = s;
STRING_CMP_IC(case_fold_flag, pstart, &s, (int)n, end);
while (sprev + (len = enclen(encode, sprev, end)) < s)
sprev += len;
MOP_OUT;
JUMP;
}
NEXT;
CASE(OP_BACKREF_MULTI) MOP_IN(OP_BACKREF_MULTI);
{
int len, is_fail;
UChar *pstart, *pend, *swork;
GET_LENGTH_INC(tlen, p);
for (i = 0; i < tlen; i++) {
GET_MEMNUM_INC(mem, p);
if (mem_end_stk[mem] == INVALID_STACK_INDEX) continue;
if (mem_start_stk[mem] == INVALID_STACK_INDEX) continue;
if (BIT_STATUS_AT(reg->bt_mem_start, mem))
pstart = STACK_AT(mem_start_stk[mem])->u.mem.pstr;
else
pstart = (UChar* )((void* )mem_start_stk[mem]);
pend = (BIT_STATUS_AT(reg->bt_mem_end, mem)
? STACK_AT(mem_end_stk[mem])->u.mem.pstr
: (UChar* )((void* )mem_end_stk[mem]));
n = pend - pstart;
DATA_ENSURE_CONTINUE(n);
sprev = s;
swork = s;
STRING_CMP_VALUE(pstart, swork, n, is_fail);
if (is_fail) continue;
s = swork;
while (sprev + (len = enclen(encode, sprev, end)) < s)
sprev += len;
p += (SIZE_MEMNUM * (tlen - i - 1));
break; /* success */
}
if (i == tlen) goto fail;
MOP_OUT;
JUMP;
}
NEXT;
CASE(OP_BACKREF_MULTI_IC) MOP_IN(OP_BACKREF_MULTI_IC);
{
int len, is_fail;
UChar *pstart, *pend, *swork;
GET_LENGTH_INC(tlen, p);
for (i = 0; i < tlen; i++) {
GET_MEMNUM_INC(mem, p);
if (mem_end_stk[mem] == INVALID_STACK_INDEX) continue;
if (mem_start_stk[mem] == INVALID_STACK_INDEX) continue;
if (BIT_STATUS_AT(reg->bt_mem_start, mem))
pstart = STACK_AT(mem_start_stk[mem])->u.mem.pstr;
else
pstart = (UChar* )((void* )mem_start_stk[mem]);
pend = (BIT_STATUS_AT(reg->bt_mem_end, mem)
? STACK_AT(mem_end_stk[mem])->u.mem.pstr
: (UChar* )((void* )mem_end_stk[mem]));
n = pend - pstart;
DATA_ENSURE_CONTINUE(n);
sprev = s;
swork = s;
STRING_CMP_VALUE_IC(case_fold_flag, pstart, &swork, n, end, is_fail);
if (is_fail) continue;
s = swork;
while (sprev + (len = enclen(encode, sprev, end)) < s)
sprev += len;
p += (SIZE_MEMNUM * (tlen - i - 1));
break; /* success */
}
if (i == tlen) goto fail;
MOP_OUT;
JUMP;
}
#ifdef USE_BACKREF_WITH_LEVEL
CASE(OP_BACKREF_WITH_LEVEL)
{
int len;
OnigOptionType ic;
LengthType level;
GET_OPTION_INC(ic, p);
GET_LENGTH_INC(level, p);
GET_LENGTH_INC(tlen, p);
sprev = s;
if (backref_match_at_nested_level(reg, stk, stk_base, ic,
case_fold_flag, (int )level, (int )tlen, p, &s, end)) {
while (sprev + (len = enclen(encode, sprev, end)) < s)
sprev += len;
p += (SIZE_MEMNUM * tlen);
}
else
goto fail;
MOP_OUT;
JUMP;
}
#endif
#if 0 /* no need: IS_DYNAMIC_OPTION() == 0 */
CASE(OP_SET_OPTION_PUSH) MOP_IN(OP_SET_OPTION_PUSH);
GET_OPTION_INC(option, p);
STACK_PUSH_ALT(p, s, sprev, pkeep);
p += SIZE_OP_SET_OPTION + SIZE_OP_FAIL;
MOP_OUT;
JUMP;
CASE(OP_SET_OPTION) MOP_IN(OP_SET_OPTION);
GET_OPTION_INC(option, p);
MOP_OUT;
JUMP;
#endif
CASE(OP_NULL_CHECK_START) MOP_IN(OP_NULL_CHECK_START);
GET_MEMNUM_INC(mem, p); /* mem: null check id */
STACK_PUSH_NULL_CHECK_START(mem, s);
MOP_OUT;
JUMP;
CASE(OP_NULL_CHECK_END) MOP_IN(OP_NULL_CHECK_END);
{
int isnull;
GET_MEMNUM_INC(mem, p); /* mem: null check id */
STACK_NULL_CHECK(isnull, mem, s);
if (isnull) {
#ifdef ONIG_DEBUG_MATCH
fprintf(stderr, "NULL_CHECK_END: skip id:%d, s:%"PRIuPTR" (%p)\n",
(int )mem, (uintptr_t )s, s);
#endif
null_check_found:
/* empty loop founded, skip next instruction */
switch (*p++) {
case OP_JUMP:
case OP_PUSH:
p += SIZE_RELADDR;
break;
case OP_REPEAT_INC:
case OP_REPEAT_INC_NG:
case OP_REPEAT_INC_SG:
case OP_REPEAT_INC_NG_SG:
p += SIZE_MEMNUM;
break;
default:
goto unexpected_bytecode_error;
break;
}
}
}
MOP_OUT;
JUMP;
#ifdef USE_MONOMANIAC_CHECK_CAPTURES_IN_ENDLESS_REPEAT
CASE(OP_NULL_CHECK_END_MEMST) MOP_IN(OP_NULL_CHECK_END_MEMST);
{
int isnull;
int ischanged = 0; // set 1 when a loop is empty but memory status is changed.
GET_MEMNUM_INC(mem, p); /* mem: null check id */
STACK_NULL_CHECK_MEMST(isnull, ischanged, mem, s, reg);
if (isnull) {
# ifdef ONIG_DEBUG_MATCH
fprintf(stderr, "NULL_CHECK_END_MEMST: skip id:%d, s:%"PRIuPTR" (%p)\n",
(int )mem, (uintptr_t )s, s);
# endif
if (isnull == -1) goto fail;
goto null_check_found;
}
# ifdef USE_CACHE_MATCH_OPT
if (ischanged && msa->enable_cache_match_opt) {
RelAddrType rel;
OnigUChar *addr;
int mem;
UChar* tmp = p;
switch (*tmp++) {
case OP_JUMP:
case OP_PUSH:
GET_RELADDR_INC(rel, tmp);
addr = tmp + rel;
break;
case OP_REPEAT_INC:
case OP_REPEAT_INC_NG:
GET_MEMNUM_INC(mem, tmp);
addr = STACK_AT(repeat_stk[mem])->u.repeat.pcode;
break;
default:
goto unexpected_bytecode_error;
}
reset_match_cache(reg, addr, pbegin, (long)(s - str), msa->match_cache, msa->cache_index_table, msa->num_cache_table ,msa->num_cache_opcode);
}
# endif
}
MOP_OUT;
JUMP;
#endif
#ifdef USE_SUBEXP_CALL
CASE(OP_NULL_CHECK_END_MEMST_PUSH)
MOP_IN(OP_NULL_CHECK_END_MEMST_PUSH);
{
int isnull;
GET_MEMNUM_INC(mem, p); /* mem: null check id */
# ifdef USE_MONOMANIAC_CHECK_CAPTURES_IN_ENDLESS_REPEAT
STACK_NULL_CHECK_MEMST_REC(isnull, mem, s, reg);
# else
STACK_NULL_CHECK_REC(isnull, mem, s);
# endif
if (isnull) {
# ifdef ONIG_DEBUG_MATCH
fprintf(stderr, "NULL_CHECK_END_MEMST_PUSH: skip id:%d, s:%"PRIuPTR" (%p)\n",
(int )mem, (uintptr_t )s, s);
# endif
if (isnull == -1) goto fail;
goto null_check_found;
}
else {
STACK_PUSH_NULL_CHECK_END(mem);
}
}
MOP_OUT;
JUMP;
#endif
CASE(OP_JUMP) MOP_IN(OP_JUMP);
GET_RELADDR_INC(addr, p);
p += addr;
MOP_OUT;
CHECK_INTERRUPT_IN_MATCH_AT;
JUMP;
CASE(OP_PUSH) MOP_IN(OP_PUSH);
GET_RELADDR_INC(addr, p);
DO_CACHE_MATCH_OPT(reg, stk_base, repeat_stk, msa->enable_cache_match_opt, pbegin, msa->num_cache_table, msa->num_cache_opcode, msa->cache_index_table, s - str, msa->match_cache);
STACK_PUSH_ALT(p + addr, s, sprev, pkeep);
MOP_OUT;
JUMP;
#ifdef USE_COMBINATION_EXPLOSION_CHECK
CASE(OP_STATE_CHECK_PUSH) MOP_IN(OP_STATE_CHECK_PUSH);
GET_STATE_CHECK_NUM_INC(mem, p);
STATE_CHECK_VAL(scv, mem);
if (scv) goto fail;
GET_RELADDR_INC(addr, p);
STACK_PUSH_ALT_WITH_STATE_CHECK(p + addr, s, sprev, mem, pkeep);
MOP_OUT;
JUMP;
CASE(OP_STATE_CHECK_PUSH_OR_JUMP) MOP_IN(OP_STATE_CHECK_PUSH_OR_JUMP);
GET_STATE_CHECK_NUM_INC(mem, p);
GET_RELADDR_INC(addr, p);
STATE_CHECK_VAL(scv, mem);
if (scv) {
p += addr;
}
else {
STACK_PUSH_ALT_WITH_STATE_CHECK(p + addr, s, sprev, mem, pkeep);
}
MOP_OUT;
JUMP;
CASE(OP_STATE_CHECK) MOP_IN(OP_STATE_CHECK);
GET_STATE_CHECK_NUM_INC(mem, p);
STATE_CHECK_VAL(scv, mem);
if (scv) goto fail;
STACK_PUSH_STATE_CHECK(s, mem);
MOP_OUT;
JUMP;
#endif /* USE_COMBINATION_EXPLOSION_CHECK */
CASE(OP_POP) MOP_IN(OP_POP);
STACK_POP_ONE;
/* We need to increment num_fail here, for invoking a cache optimization correctly, */
/* because Onigmo makes a loop, which is pairwise disjoint to the following set, as atomic. */
#ifdef USE_CACHE_MATCH_OPT
msa->num_fail++;
#endif
MOP_OUT;
JUMP;
#ifdef USE_OP_PUSH_OR_JUMP_EXACT
CASE(OP_PUSH_OR_JUMP_EXACT1) MOP_IN(OP_PUSH_OR_JUMP_EXACT1);
GET_RELADDR_INC(addr, p);
if (*p == *s && DATA_ENSURE_CHECK1) {
p++;
DO_CACHE_MATCH_OPT(reg, stk_base, repeat_stk, msa->enable_cache_match_opt, pbegin, msa->num_cache_table, msa->num_cache_opcode, msa->cache_index_table, s - str, msa->match_cache);
STACK_PUSH_ALT(p + addr, s, sprev, pkeep);
MOP_OUT;
JUMP;
}
p += (addr + 1);
MOP_OUT;
JUMP;
#endif
CASE(OP_PUSH_IF_PEEK_NEXT) MOP_IN(OP_PUSH_IF_PEEK_NEXT);
GET_RELADDR_INC(addr, p);
if (*p == *s) {
p++;
DO_CACHE_MATCH_OPT(reg, stk_base, repeat_stk, msa->enable_cache_match_opt, pbegin, msa->num_cache_table, msa->num_cache_opcode, msa->cache_index_table, s - str, msa->match_cache);
STACK_PUSH_ALT(p + addr, s, sprev, pkeep);
MOP_OUT;
JUMP;
}
p++;
MOP_OUT;
JUMP;
CASE(OP_REPEAT) MOP_IN(OP_REPEAT);
{
GET_MEMNUM_INC(mem, p); /* mem: OP_REPEAT ID */
GET_RELADDR_INC(addr, p);
STACK_ENSURE(1);
repeat_stk[mem] = GET_STACK_INDEX(stk);
STACK_PUSH_REPEAT(mem, p);
if (reg->repeat_range[mem].lower == 0) {
DO_CACHE_MATCH_OPT(reg, stk_base, repeat_stk, msa->enable_cache_match_opt, pbegin, msa->num_cache_table, msa->num_cache_opcode, msa->cache_index_table, end - s, msa->match_cache);
STACK_PUSH_ALT(p + addr, s, sprev, pkeep);
}
}
MOP_OUT;
JUMP;
CASE(OP_REPEAT_NG) MOP_IN(OP_REPEAT_NG);
{
GET_MEMNUM_INC(mem, p); /* mem: OP_REPEAT ID */
GET_RELADDR_INC(addr, p);
STACK_ENSURE(1);
repeat_stk[mem] = GET_STACK_INDEX(stk);
STACK_PUSH_REPEAT(mem, p);
if (reg->repeat_range[mem].lower == 0) {
DO_CACHE_MATCH_OPT(reg, stk_base, repeat_stk, msa->enable_cache_match_opt, pbegin, msa->num_cache_table, msa->num_cache_opcode, msa->cache_index_table, s - str, msa->match_cache);
STACK_PUSH_ALT(p, s, sprev, pkeep);
p += addr;
}
}
MOP_OUT;
JUMP;
CASE(OP_REPEAT_INC) MOP_IN(OP_REPEAT_INC);
GET_MEMNUM_INC(mem, p); /* mem: OP_REPEAT ID */
si = repeat_stk[mem];
stkp = STACK_AT(si);
repeat_inc:
stkp->u.repeat.count++;
if (stkp->u.repeat.count >= reg->repeat_range[mem].upper) {
/* end of repeat. Nothing to do. */
}
else if (stkp->u.repeat.count >= reg->repeat_range[mem].lower) {
if (*pbegin == OP_REPEAT_INC) {
DO_CACHE_MATCH_OPT(reg, stk_base, repeat_stk, msa->enable_cache_match_opt, pbegin, msa->num_cache_table, msa->num_cache_opcode, msa->cache_index_table, s - str, msa->match_cache);
}
STACK_PUSH_ALT(p, s, sprev, pkeep);
p = STACK_AT(si)->u.repeat.pcode; /* Don't use stkp after PUSH. */
}
else {
p = stkp->u.repeat.pcode;
}
STACK_PUSH_REPEAT_INC(si);
MOP_OUT;
CHECK_INTERRUPT_IN_MATCH_AT;
JUMP;
CASE(OP_REPEAT_INC_SG) MOP_IN(OP_REPEAT_INC_SG);
GET_MEMNUM_INC(mem, p); /* mem: OP_REPEAT ID */
STACK_GET_REPEAT(mem, stkp);
si = GET_STACK_INDEX(stkp);
goto repeat_inc;
NEXT;
CASE(OP_REPEAT_INC_NG) MOP_IN(OP_REPEAT_INC_NG);
GET_MEMNUM_INC(mem, p); /* mem: OP_REPEAT ID */
si = repeat_stk[mem];
stkp = STACK_AT(si);
repeat_inc_ng:
stkp->u.repeat.count++;
if (stkp->u.repeat.count < reg->repeat_range[mem].upper) {
if (stkp->u.repeat.count >= reg->repeat_range[mem].lower) {
UChar* pcode = stkp->u.repeat.pcode;
STACK_PUSH_REPEAT_INC(si);
if (*pbegin == OP_REPEAT_INC_NG) {
DO_CACHE_MATCH_OPT(reg, stk_base, repeat_stk, msa->enable_cache_match_opt, pbegin, msa->num_cache_table, msa->num_cache_opcode, msa->cache_index_table, s - str, msa->match_cache);
}
STACK_PUSH_ALT(pcode, s, sprev, pkeep);
}
else {
p = stkp->u.repeat.pcode;
STACK_PUSH_REPEAT_INC(si);
}
}
else if (stkp->u.repeat.count == reg->repeat_range[mem].upper) {
STACK_PUSH_REPEAT_INC(si);
}
MOP_OUT;
CHECK_INTERRUPT_IN_MATCH_AT;
JUMP;
CASE(OP_REPEAT_INC_NG_SG) MOP_IN(OP_REPEAT_INC_NG_SG);
GET_MEMNUM_INC(mem, p); /* mem: OP_REPEAT ID */
STACK_GET_REPEAT(mem, stkp);
si = GET_STACK_INDEX(stkp);
goto repeat_inc_ng;
NEXT;
CASE(OP_PUSH_POS) MOP_IN(OP_PUSH_POS);
STACK_PUSH_POS(s, sprev, pkeep);
MOP_OUT;
JUMP;
CASE(OP_POP_POS) MOP_IN(OP_POP_POS);
{
STACK_POS_END(stkp);
s = stkp->u.state.pstr;
sprev = stkp->u.state.pstr_prev;
}
MOP_OUT;
JUMP;
CASE(OP_PUSH_POS_NOT) MOP_IN(OP_PUSH_POS_NOT);
GET_RELADDR_INC(addr, p);
STACK_PUSH_POS_NOT(p + addr, s, sprev, pkeep);
MOP_OUT;
JUMP;
CASE(OP_FAIL_POS) MOP_IN(OP_FAIL_POS);
STACK_POP_TIL_POS_NOT;
goto fail;
NEXT;
CASE(OP_PUSH_STOP_BT) MOP_IN(OP_PUSH_STOP_BT);
STACK_PUSH_STOP_BT;
MOP_OUT;
JUMP;
CASE(OP_POP_STOP_BT) MOP_IN(OP_POP_STOP_BT);
STACK_STOP_BT_END;
MOP_OUT;
JUMP;
CASE(OP_LOOK_BEHIND) MOP_IN(OP_LOOK_BEHIND);
GET_LENGTH_INC(tlen, p);
s = (UChar* )ONIGENC_STEP_BACK(encode, str, s, end, (int )tlen);
if (IS_NULL(s)) goto fail;
sprev = (UChar* )onigenc_get_prev_char_head(encode, str, s, end);
MOP_OUT;
JUMP;
CASE(OP_PUSH_LOOK_BEHIND_NOT) MOP_IN(OP_PUSH_LOOK_BEHIND_NOT);
GET_RELADDR_INC(addr, p);
GET_LENGTH_INC(tlen, p);
q = (UChar* )ONIGENC_STEP_BACK(encode, str, s, end, (int )tlen);
if (IS_NULL(q)) {
/* too short case -> success. ex. /(?<!XXX)a/.match("a")
If you want to change to fail, replace following line. */
p += addr;
/* goto fail; */
}
else {
STACK_PUSH_LOOK_BEHIND_NOT(p + addr, s, sprev, pkeep);
s = q;
sprev = (UChar* )onigenc_get_prev_char_head(encode, str, s, end);
}
MOP_OUT;
JUMP;
CASE(OP_FAIL_LOOK_BEHIND_NOT) MOP_IN(OP_FAIL_LOOK_BEHIND_NOT);
STACK_POP_TIL_LOOK_BEHIND_NOT;
goto fail;
NEXT;
CASE(OP_PUSH_ABSENT_POS) MOP_IN(OP_PUSH_ABSENT_POS);
/* Save the absent-start-pos and the original end-pos. */
STACK_PUSH_ABSENT_POS(s, ABSENT_END_POS);
MOP_OUT;
JUMP;
CASE(OP_ABSENT) MOP_IN(OP_ABSENT);
{
const UChar* aend = ABSENT_END_POS;
UChar* absent;
UChar* selfp = p - 1;
STACK_POP_ABSENT_POS(absent, ABSENT_END_POS); /* Restore end-pos. */
GET_RELADDR_INC(addr, p);
#ifdef ONIG_DEBUG_MATCH
fprintf(stderr, "ABSENT: s:%p, end:%p, absent:%p, aend:%p\n", s, end, absent, aend);
#endif
if ((absent > aend) && (s > absent)) {
/* An empty match occurred in (?~...) at the start point.
* Never match. */
STACK_POP;
goto fail;
}
else if ((s >= aend) && (s > absent)) {
if (s > aend) {
/* Only one (or less) character matched in the last iteration.
* This is not a possible point. */
goto fail;
}
/* All possible points were found. Try matching after (?~...). */
DATA_ENSURE(0);
p += addr;
}
else {
STACK_PUSH_ALT(p + addr, s, sprev, pkeep); /* Push possible point. */
n = enclen(encode, s, end);
STACK_PUSH_ABSENT_POS(absent, ABSENT_END_POS); /* Save the original pos. */
STACK_PUSH_ALT(selfp, s + n, s, pkeep); /* Next iteration. */
STACK_PUSH_ABSENT;
ABSENT_END_POS = aend;
}
}
MOP_OUT;
JUMP;
CASE(OP_ABSENT_END) MOP_IN(OP_ABSENT_END);
/* The pattern inside (?~...) was matched.
* Set the end-pos temporary and go to next iteration. */
if (sprev < ABSENT_END_POS)
ABSENT_END_POS = sprev;
#ifdef ONIG_DEBUG_MATCH
fprintf(stderr, "ABSENT_END: end:%p\n", ABSENT_END_POS);
#endif
STACK_POP_TIL_ABSENT;
goto fail;
NEXT;
#ifdef USE_SUBEXP_CALL
CASE(OP_CALL) MOP_IN(OP_CALL);
GET_ABSADDR_INC(addr, p);
STACK_PUSH_CALL_FRAME(p);
p = reg->p + addr;
MOP_OUT;
JUMP;
CASE(OP_RETURN) MOP_IN(OP_RETURN);
STACK_RETURN(p);
STACK_PUSH_RETURN;
MOP_OUT;
JUMP;
#endif
CASE(OP_CONDITION) MOP_IN(OP_CONDITION);
GET_MEMNUM_INC(mem, p);
GET_RELADDR_INC(addr, p);
if ((mem > num_mem) ||
(mem_end_stk[mem] == INVALID_STACK_INDEX) ||
(mem_start_stk[mem] == INVALID_STACK_INDEX)) {
p += addr;
}
MOP_OUT;
JUMP;
CASE(OP_FINISH)
goto finish;
NEXT;
CASE(OP_FAIL)
if (0) {
/* fall */
fail:
MOP_OUT;
}
MOP_IN(OP_FAIL);
STACK_POP;
p = stk->u.state.pcode;
s = stk->u.state.pstr;
sprev = stk->u.state.pstr_prev;
pkeep = stk->u.state.pkeep;
#ifdef USE_CACHE_MATCH_OPT
if (++msa->num_fail >= (long)(end - str) + 1 && msa->num_cache_opcode == NUM_CACHE_OPCODE_UNINIT) {
long table_size = 0;
msa->enable_cache_match_opt = 1;
if (msa->num_cache_opcode == NUM_CACHE_OPCODE_UNINIT) {
msa->num_cache_opcode = count_num_cache_opcode(reg, &table_size);
}
if (msa->num_cache_opcode == NUM_CACHE_OPCODE_FAIL || msa->num_cache_opcode == 0) {
msa->enable_cache_match_opt = 0;
goto fail_match_cache_opt;
}
if (msa->cache_index_table == NULL) {
OnigCacheIndex *table = (OnigCacheIndex *)xmalloc(table_size * sizeof(OnigCacheIndex));
if (table == NULL) {
return ONIGERR_MEMORY;
}
init_cache_index_table(reg, table);
msa->cache_index_table = table;
msa->num_cache_table = table_size;
}
size_t len = (end - str) + 1;
size_t match_cache_size8 = (size_t)msa->num_cache_opcode * len;
/* overflow check */
if (match_cache_size8 / len != (size_t)msa->num_cache_opcode) {
return ONIGERR_MEMORY;
}
/* Currently, int is used for the key of match_cache */
if (match_cache_size8 >= LONG_MAX_LIMIT) {
return ONIGERR_MEMORY;
}
size_t match_cache_size = (match_cache_size8 >> 3) + (match_cache_size8 & 7 ? 1 : 0);
msa->match_cache = (uint8_t*)xmalloc(match_cache_size * sizeof(uint8_t));
if (msa->match_cache == NULL) {
return ONIGERR_MEMORY;
}
xmemset(msa->match_cache, 0, match_cache_size * sizeof(uint8_t));
}
fail_match_cache_opt:
#endif
#ifdef USE_COMBINATION_EXPLOSION_CHECK
if (stk->u.state.state_check != 0) {
stk->type = STK_STATE_CHECK_MARK;
stk++;
}
#endif
MOP_OUT;
CHECK_INTERRUPT_IN_MATCH_AT;
JUMP;
DEFAULT
goto bytecode_error;
} VM_LOOP_END
finish:
STACK_SAVE;
if (xmalloc_base) xfree(xmalloc_base);
return best_len;
#ifdef ONIG_DEBUG
stack_error:
STACK_SAVE;
if (xmalloc_base) xfree(xmalloc_base);
return ONIGERR_STACK_BUG;
#endif
bytecode_error:
STACK_SAVE;
if (xmalloc_base) xfree(xmalloc_base);
return ONIGERR_UNDEFINED_BYTECODE;
unexpected_bytecode_error:
STACK_SAVE;
if (xmalloc_base) xfree(xmalloc_base);
return ONIGERR_UNEXPECTED_BYTECODE;
}
static UChar*
slow_search(OnigEncoding enc, UChar* target, UChar* target_end,
const UChar* text, const UChar* text_end, UChar* text_range)
{
UChar *t, *p, *s, *end;
end = (UChar* )text_end;
end -= target_end - target - 1;
if (end > text_range)
end = text_range;
s = (UChar* )text;
if (enc->max_enc_len == enc->min_enc_len) {
int n = enc->max_enc_len;
while (s < end) {
if (*s == *target) {
p = s + 1;
t = target + 1;
if (target_end == t || memcmp(t, p, target_end - t) == 0)
return s;
}
s += n;
}
return (UChar* )NULL;
}
while (s < end) {
if (*s == *target) {
p = s + 1;
t = target + 1;
if (target_end == t || memcmp(t, p, target_end - t) == 0)
return s;
}
s += enclen(enc, s, text_end);
}
return (UChar* )NULL;
}
static int
str_lower_case_match(OnigEncoding enc, int case_fold_flag,
const UChar* t, const UChar* tend,
const UChar* p, const UChar* end)
{
int lowlen;
UChar *q, lowbuf[ONIGENC_MBC_CASE_FOLD_MAXLEN];
while (t < tend) {
lowlen = ONIGENC_MBC_CASE_FOLD(enc, case_fold_flag, &p, end, lowbuf);
q = lowbuf;
while (lowlen > 0) {
if (*t++ != *q++) return 0;
lowlen--;
}
}
return 1;
}
static UChar*
slow_search_ic(OnigEncoding enc, int case_fold_flag,
UChar* target, UChar* target_end,
const UChar* text, const UChar* text_end, UChar* text_range)
{
UChar *s, *end;
end = (UChar* )text_end;
end -= target_end - target - 1;
if (end > text_range)
end = text_range;
s = (UChar* )text;
while (s < end) {
if (str_lower_case_match(enc, case_fold_flag, target, target_end,
s, text_end))
return s;
s += enclen(enc, s, text_end);
}
return (UChar* )NULL;
}
static UChar*
slow_search_backward(OnigEncoding enc, UChar* target, UChar* target_end,
const UChar* text, const UChar* adjust_text,
const UChar* text_end, const UChar* text_start)
{
UChar *t, *p, *s;
s = (UChar* )text_end;
s -= (target_end - target);
if (s > text_start)
s = (UChar* )text_start;
else
s = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, adjust_text, s, text_end);
while (s >= text) {
if (*s == *target) {
p = s + 1;
t = target + 1;
while (t < target_end) {
if (*t != *p++)
break;
t++;
}
if (t == target_end)
return s;
}
s = (UChar* )onigenc_get_prev_char_head(enc, adjust_text, s, text_end);
}
return (UChar* )NULL;
}
static UChar*
slow_search_backward_ic(OnigEncoding enc, int case_fold_flag,
UChar* target, UChar* target_end,
const UChar* text, const UChar* adjust_text,
const UChar* text_end, const UChar* text_start)
{
UChar *s;
s = (UChar* )text_end;
s -= (target_end - target);
if (s > text_start)
s = (UChar* )text_start;
else
s = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, adjust_text, s, text_end);
while (s >= text) {
if (str_lower_case_match(enc, case_fold_flag,
target, target_end, s, text_end))
return s;
s = (UChar* )onigenc_get_prev_char_head(enc, adjust_text, s, text_end);
}
return (UChar* )NULL;
}
#ifndef USE_SUNDAY_QUICK_SEARCH
/* Boyer-Moore-Horspool search applied to a multibyte string */
static UChar*
bm_search_notrev(regex_t* reg, const UChar* target, const UChar* target_end,
const UChar* text, const UChar* text_end,
const UChar* text_range)
{
const UChar *s, *se, *t, *p, *end;
const UChar *tail;
ptrdiff_t skip, tlen1;
# ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "bm_search_notrev: text: %"PRIuPTR" (%p), text_end: %"PRIuPTR" (%p), text_range: %"PRIuPTR" (%p)\n",
(uintptr_t )text, text, (uintptr_t )text_end, text_end, (uintptr_t )text_range, text_range);
# endif
tail = target_end - 1;
tlen1 = tail - target;
end = text_range;
if (end + tlen1 > text_end)
end = text_end - tlen1;
s = text;
if (IS_NULL(reg->int_map)) {
while (s < end) {
p = se = s + tlen1;
t = tail;
while (*p == *t) {
if (t == target) return (UChar* )s;
p--; t--;
}
skip = reg->map[*se];
t = s;
do {
s += enclen(reg->enc, s, end);
} while ((s - t) < skip && s < end);
}
}
else {
# if OPT_EXACT_MAXLEN >= ONIG_CHAR_TABLE_SIZE
while (s < end) {
p = se = s + tlen1;
t = tail;
while (*p == *t) {
if (t == target) return (UChar* )s;
p--; t--;
}
skip = reg->int_map[*se];
t = s;
do {
s += enclen(reg->enc, s, end);
} while ((s - t) < skip && s < end);
}
# endif
}
return (UChar* )NULL;
}
/* Boyer-Moore-Horspool search */
static UChar*
bm_search(regex_t* reg, const UChar* target, const UChar* target_end,
const UChar* text, const UChar* text_end, const UChar* text_range)
{
const UChar *s, *t, *p, *end;
const UChar *tail;
# ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "bm_search: text: %"PRIuPTR" (%p), text_end: %"PRIuPTR" (%p), text_range: %"PRIuPTR" (%p)\n",
(uintptr_t )text, text, (uintptr_t )text_end, text_end, (uintptr_t )text_range, text_range);
# endif
end = text_range + (target_end - target) - 1;
if (end > text_end)
end = text_end;
tail = target_end - 1;
s = text + (target_end - target) - 1;
if (IS_NULL(reg->int_map)) {
while (s < end) {
p = s;
t = tail;
# ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "bm_search_loop: pos: %"PRIdPTR" %s\n",
(intptr_t )(s - text), s);
# endif
while (*p == *t) {
if (t == target) return (UChar* )p;
p--; t--;
}
s += reg->map[*s];
}
}
else { /* see int_map[] */
# if OPT_EXACT_MAXLEN >= ONIG_CHAR_TABLE_SIZE
while (s < end) {
p = s;
t = tail;
while (*p == *t) {
if (t == target) return (UChar* )p;
p--; t--;
}
s += reg->int_map[*s];
}
# endif
}
return (UChar* )NULL;
}
/* Boyer-Moore-Horspool search applied to a multibyte string (ignore case) */
static UChar*
bm_search_notrev_ic(regex_t* reg, const UChar* target, const UChar* target_end,
const UChar* text, const UChar* text_end,
const UChar* text_range)
{
const UChar *s, *se, *t, *end;
const UChar *tail;
ptrdiff_t skip, tlen1;
OnigEncoding enc = reg->enc;
int case_fold_flag = reg->case_fold_flag;
# ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "bm_search_notrev_ic: text: %d (%p), text_end: %d (%p), text_range: %d (%p)\n",
(int )text, text, (int )text_end, text_end, (int )text_range, text_range);
# endif
tail = target_end - 1;
tlen1 = tail - target;
end = text_range;
if (end + tlen1 > text_end)
end = text_end - tlen1;
s = text;
if (IS_NULL(reg->int_map)) {
while (s < end) {
se = s + tlen1;
if (str_lower_case_match(enc, case_fold_flag, target, target_end,
s, se + 1))
return (UChar* )s;
skip = reg->map[*se];
t = s;
do {
s += enclen(reg->enc, s, end);
} while ((s - t) < skip && s < end);
}
}
else {
# if OPT_EXACT_MAXLEN >= ONIG_CHAR_TABLE_SIZE
while (s < end) {
se = s + tlen1;
if (str_lower_case_match(enc, case_fold_flag, target, target_end,
s, se + 1))
return (UChar* )s;
skip = reg->int_map[*se];
t = s;
do {
s += enclen(reg->enc, s, end);
} while ((s - t) < skip && s < end);
}
# endif
}
return (UChar* )NULL;
}
/* Boyer-Moore-Horspool search (ignore case) */
static UChar*
bm_search_ic(regex_t* reg, const UChar* target, const UChar* target_end,
const UChar* text, const UChar* text_end, const UChar* text_range)
{
const UChar *s, *p, *end;
const UChar *tail;
OnigEncoding enc = reg->enc;
int case_fold_flag = reg->case_fold_flag;
# ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "bm_search_ic: text: %d (%p), text_end: %d (%p), text_range: %d (%p)\n",
(int )text, text, (int )text_end, text_end, (int )text_range, text_range);
# endif
end = text_range + (target_end - target) - 1;
if (end > text_end)
end = text_end;
tail = target_end - 1;
s = text + (target_end - target) - 1;
if (IS_NULL(reg->int_map)) {
while (s < end) {
p = s - (target_end - target) + 1;
if (str_lower_case_match(enc, case_fold_flag, target, target_end,
p, s + 1))
return (UChar* )p;
s += reg->map[*s];
}
}
else { /* see int_map[] */
# if OPT_EXACT_MAXLEN >= ONIG_CHAR_TABLE_SIZE
while (s < end) {
p = s - (target_end - target) + 1;
if (str_lower_case_match(enc, case_fold_flag, target, target_end,
p, s + 1))
return (UChar* )p;
s += reg->int_map[*s];
}
# endif
}
return (UChar* )NULL;
}
#else /* USE_SUNDAY_QUICK_SEARCH */
/* Sunday's quick search applied to a multibyte string */
static UChar*
bm_search_notrev(regex_t* reg, const UChar* target, const UChar* target_end,
const UChar* text, const UChar* text_end,
const UChar* text_range)
{
const UChar *s, *se, *t, *p, *end;
const UChar *tail;
ptrdiff_t skip, tlen1;
OnigEncoding enc = reg->enc;
# ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "bm_search_notrev: text: %"PRIuPTR" (%p), text_end: %"PRIuPTR" (%p), text_range: %"PRIuPTR" (%p)\n",
(uintptr_t )text, text, (uintptr_t )text_end, text_end, (uintptr_t )text_range, text_range);
# endif
tail = target_end - 1;
tlen1 = tail - target;
end = text_range;
if (end + tlen1 > text_end)
end = text_end - tlen1;
s = text;
if (IS_NULL(reg->int_map)) {
while (s < end) {
p = se = s + tlen1;
t = tail;
while (*p == *t) {
if (t == target) return (UChar* )s;
p--; t--;
}
if (s + 1 >= end) break;
skip = reg->map[se[1]];
t = s;
do {
s += enclen(enc, s, end);
} while ((s - t) < skip && s < end);
}
}
else {
# if OPT_EXACT_MAXLEN >= ONIG_CHAR_TABLE_SIZE
while (s < end) {
p = se = s + tlen1;
t = tail;
while (*p == *t) {
if (t == target) return (UChar* )s;
p--; t--;
}
if (s + 1 >= end) break;
skip = reg->int_map[se[1]];
t = s;
do {
s += enclen(enc, s, end);
} while ((s - t) < skip && s < end);
}
# endif
}
return (UChar* )NULL;
}
/* Sunday's quick search */
static UChar*
bm_search(regex_t* reg, const UChar* target, const UChar* target_end,
const UChar* text, const UChar* text_end, const UChar* text_range)
{
const UChar *s, *t, *p, *end;
const UChar *tail;
ptrdiff_t tlen1;
# ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "bm_search: text: %"PRIuPTR" (%p), text_end: %"PRIuPTR" (%p), text_range: %"PRIuPTR" (%p)\n",
(uintptr_t )text, text, (uintptr_t )text_end, text_end, (uintptr_t )text_range, text_range);
# endif
tail = target_end - 1;
tlen1 = tail - target;
end = text_range + tlen1;
if (end > text_end)
end = text_end;
s = text + tlen1;
if (IS_NULL(reg->int_map)) {
while (s < end) {
p = s;
t = tail;
while (*p == *t) {
if (t == target) return (UChar* )p;
p--; t--;
}
if (s + 1 >= end) break;
s += reg->map[s[1]];
}
}
else { /* see int_map[] */
# if OPT_EXACT_MAXLEN >= ONIG_CHAR_TABLE_SIZE
while (s < end) {
p = s;
t = tail;
while (*p == *t) {
if (t == target) return (UChar* )p;
p--; t--;
}
if (s + 1 >= end) break;
s += reg->int_map[s[1]];
}
# endif
}
return (UChar* )NULL;
}
/* Sunday's quick search applied to a multibyte string (ignore case) */
static UChar*
bm_search_notrev_ic(regex_t* reg, const UChar* target, const UChar* target_end,
const UChar* text, const UChar* text_end,
const UChar* text_range)
{
const UChar *s, *se, *t, *end;
const UChar *tail;
ptrdiff_t skip, tlen1;
OnigEncoding enc = reg->enc;
int case_fold_flag = reg->case_fold_flag;
# ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "bm_search_notrev_ic: text: %"PRIuPTR" (%p), text_end: %"PRIuPTR" (%p), text_range: %"PRIuPTR" (%p)\n",
(uintptr_t )text, text, (uintptr_t )text_end, text_end, (uintptr_t )text_range, text_range);
# endif
tail = target_end - 1;
tlen1 = tail - target;
end = text_range;
if (end + tlen1 > text_end)
end = text_end - tlen1;
s = text;
if (IS_NULL(reg->int_map)) {
while (s < end) {
se = s + tlen1;
if (str_lower_case_match(enc, case_fold_flag, target, target_end,
s, se + 1))
return (UChar* )s;
if (s + 1 >= end) break;
skip = reg->map[se[1]];
t = s;
do {
s += enclen(enc, s, end);
} while ((s - t) < skip && s < end);
}
}
else {
# if OPT_EXACT_MAXLEN >= ONIG_CHAR_TABLE_SIZE
while (s < end) {
se = s + tlen1;
if (str_lower_case_match(enc, case_fold_flag, target, target_end,
s, se + 1))
return (UChar* )s;
if (s + 1 >= end) break;
skip = reg->int_map[se[1]];
t = s;
do {
s += enclen(enc, s, end);
} while ((s - t) < skip && s < end);
}
# endif
}
return (UChar* )NULL;
}
/* Sunday's quick search (ignore case) */
static UChar*
bm_search_ic(regex_t* reg, const UChar* target, const UChar* target_end,
const UChar* text, const UChar* text_end, const UChar* text_range)
{
const UChar *s, *p, *end;
const UChar *tail;
ptrdiff_t tlen1;
OnigEncoding enc = reg->enc;
int case_fold_flag = reg->case_fold_flag;
# ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "bm_search_ic: text: %"PRIuPTR" (%p), text_end: %"PRIuPTR" (%p), text_range: %"PRIuPTR" (%p)\n",
(uintptr_t )text, text, (uintptr_t )text_end, text_end, (uintptr_t )text_range, text_range);
# endif
tail = target_end - 1;
tlen1 = tail - target;
end = text_range + tlen1;
if (end > text_end)
end = text_end;
s = text + tlen1;
if (IS_NULL(reg->int_map)) {
while (s < end) {
p = s - tlen1;
if (str_lower_case_match(enc, case_fold_flag, target, target_end,
p, s + 1))
return (UChar* )p;
if (s + 1 >= end) break;
s += reg->map[s[1]];
}
}
else { /* see int_map[] */
# if OPT_EXACT_MAXLEN >= ONIG_CHAR_TABLE_SIZE
while (s < end) {
p = s - tlen1;
if (str_lower_case_match(enc, case_fold_flag, target, target_end,
p, s + 1))
return (UChar* )p;
if (s + 1 >= end) break;
s += reg->int_map[s[1]];
}
# endif
}
return (UChar* )NULL;
}
#endif /* USE_SUNDAY_QUICK_SEARCH */
#ifdef USE_INT_MAP_BACKWARD
static int
set_bm_backward_skip(UChar* s, UChar* end, OnigEncoding enc ARG_UNUSED,
int** skip)
{
int i, len;
if (IS_NULL(*skip)) {
*skip = (int* )xmalloc(sizeof(int) * ONIG_CHAR_TABLE_SIZE);
if (IS_NULL(*skip)) return ONIGERR_MEMORY;
}
len = (int )(end - s);
for (i = 0; i < ONIG_CHAR_TABLE_SIZE; i++)
(*skip)[i] = len;
for (i = len - 1; i > 0; i--)
(*skip)[s[i]] = i;
return 0;
}
static UChar*
bm_search_backward(regex_t* reg, const UChar* target, const UChar* target_end,
const UChar* text, const UChar* adjust_text,
const UChar* text_end, const UChar* text_start)
{
const UChar *s, *t, *p;
s = text_end - (target_end - target);
if (text_start < s)
s = text_start;
else
s = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc, adjust_text, s, text_end);
while (s >= text) {
p = s;
t = target;
while (t < target_end && *p == *t) {
p++; t++;
}
if (t == target_end)
return (UChar* )s;
s -= reg->int_map_backward[*s];
s = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc, adjust_text, s, text_end);
}
return (UChar* )NULL;
}
#endif
static UChar*
map_search(OnigEncoding enc, UChar map[],
const UChar* text, const UChar* text_range, const UChar* text_end)
{
const UChar *s = text;
while (s < text_range) {
if (map[*s]) return (UChar* )s;
s += enclen(enc, s, text_end);
}
return (UChar* )NULL;
}
static UChar*
map_search_backward(OnigEncoding enc, UChar map[],
const UChar* text, const UChar* adjust_text,
const UChar* text_start, const UChar* text_end)
{
const UChar *s = text_start;
while (s >= text) {
if (map[*s]) return (UChar* )s;
s = onigenc_get_prev_char_head(enc, adjust_text, s, text_end);
}
return (UChar* )NULL;
}
extern OnigPosition
onig_match(regex_t* reg, const UChar* str, const UChar* end, const UChar* at, OnigRegion* region,
OnigOptionType option)
{
ptrdiff_t r;
UChar *prev;
OnigMatchArg msa;
MATCH_ARG_INIT(msa, option, region, at, at);
#ifdef USE_COMBINATION_EXPLOSION_CHECK
{
ptrdiff_t offset = at - str;
STATE_CHECK_BUFF_INIT(msa, end - str, offset, reg->num_comb_exp_check);
}
#endif
if (region) {
r = onig_region_resize_clear(region, reg->num_mem + 1);
}
else
r = 0;
if (r == 0) {
prev = (UChar* )onigenc_get_prev_char_head(reg->enc, str, at, end);
r = match_at(reg, str, end,
#ifdef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE
end,
#endif
at, prev, &msa);
}
MATCH_ARG_FREE(msa);
return r;
}
static int
forward_search_range(regex_t* reg, const UChar* str, const UChar* end, UChar* s,
UChar* range, UChar** low, UChar** high, UChar** low_prev)
{
UChar *p, *pprev = (UChar* )NULL;
#ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "forward_search_range: str: %"PRIuPTR" (%p), end: %"PRIuPTR" (%p), s: %"PRIuPTR" (%p), range: %"PRIuPTR" (%p)\n",
(uintptr_t )str, str, (uintptr_t )end, end, (uintptr_t )s, s, (uintptr_t )range, range);
#endif
p = s;
if (reg->dmin > 0) {
if (ONIGENC_IS_SINGLEBYTE(reg->enc)) {
p += reg->dmin;
}
else {
UChar *q = p + reg->dmin;
if (q >= end) return 0; /* fail */
while (p < q) p += enclen(reg->enc, p, end);
}
}
retry:
switch (reg->optimize) {
case ONIG_OPTIMIZE_EXACT:
p = slow_search(reg->enc, reg->exact, reg->exact_end, p, end, range);
break;
case ONIG_OPTIMIZE_EXACT_IC:
p = slow_search_ic(reg->enc, reg->case_fold_flag,
reg->exact, reg->exact_end, p, end, range);
break;
case ONIG_OPTIMIZE_EXACT_BM:
p = bm_search(reg, reg->exact, reg->exact_end, p, end, range);
break;
case ONIG_OPTIMIZE_EXACT_BM_NOT_REV:
p = bm_search_notrev(reg, reg->exact, reg->exact_end, p, end, range);
break;
case ONIG_OPTIMIZE_EXACT_BM_IC:
p = bm_search_ic(reg, reg->exact, reg->exact_end, p, end, range);
break;
case ONIG_OPTIMIZE_EXACT_BM_NOT_REV_IC:
p = bm_search_notrev_ic(reg, reg->exact, reg->exact_end, p, end, range);
break;
case ONIG_OPTIMIZE_MAP:
p = map_search(reg->enc, reg->map, p, range, end);
break;
}
if (p && p < range) {
if (p - reg->dmin < s) {
retry_gate:
pprev = p;
p += enclen(reg->enc, p, end);
goto retry;
}
if (reg->sub_anchor) {
UChar* prev;
switch (reg->sub_anchor) {
case ANCHOR_BEGIN_LINE:
if (!ON_STR_BEGIN(p)) {
prev = onigenc_get_prev_char_head(reg->enc,
(pprev ? pprev : str), p, end);
if (!ONIGENC_IS_MBC_NEWLINE_EX(reg->enc, prev, str, end, reg->options, 0))
goto retry_gate;
}
break;
case ANCHOR_END_LINE:
if (ON_STR_END(p)) {
#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE
prev = (UChar* )onigenc_get_prev_char_head(reg->enc,
(pprev ? pprev : str), p);
if (prev && ONIGENC_IS_MBC_NEWLINE_EX(reg->enc, prev, str, end, reg->options, 1))
goto retry_gate;
#endif
}
else if (! ONIGENC_IS_MBC_NEWLINE_EX(reg->enc, p, str, end, reg->options, 1))
goto retry_gate;
break;
}
}
if (reg->dmax == 0) {
*low = p;
if (low_prev) {
if (*low > s)
*low_prev = onigenc_get_prev_char_head(reg->enc, s, p, end);
else
*low_prev = onigenc_get_prev_char_head(reg->enc,
(pprev ? pprev : str), p, end);
}
}
else {
if (reg->dmax != ONIG_INFINITE_DISTANCE) {
if (p < str + reg->dmax) {
*low = (UChar* )str;
if (low_prev)
*low_prev = onigenc_get_prev_char_head(reg->enc, str, *low, end);
}
else {
*low = p - reg->dmax;
if (*low > s) {
*low = onigenc_get_right_adjust_char_head_with_prev(reg->enc, s,
*low, end, (const UChar** )low_prev);
if (low_prev && IS_NULL(*low_prev))
*low_prev = onigenc_get_prev_char_head(reg->enc,
(pprev ? pprev : s), *low, end);
}
else {
if (low_prev)
*low_prev = onigenc_get_prev_char_head(reg->enc,
(pprev ? pprev : str), *low, end);
}
}
}
}
/* no needs to adjust *high, *high is used as range check only */
*high = p - reg->dmin;
#ifdef ONIG_DEBUG_SEARCH
fprintf(stderr,
"forward_search_range success: low: %"PRIdPTR", high: %"PRIdPTR", dmin: %"PRIdPTR", dmax: %"PRIdPTR"\n",
*low - str, *high - str, reg->dmin, reg->dmax);
#endif
return 1; /* success */
}
return 0; /* fail */
}
#define BM_BACKWARD_SEARCH_LENGTH_THRESHOLD 100
static int
backward_search_range(regex_t* reg, const UChar* str, const UChar* end,
UChar* s, const UChar* range, UChar* adjrange,
UChar** low, UChar** high)
{
UChar *p;
range += reg->dmin;
p = s;
retry:
switch (reg->optimize) {
case ONIG_OPTIMIZE_EXACT:
exact_method:
p = slow_search_backward(reg->enc, reg->exact, reg->exact_end,
range, adjrange, end, p);
break;
case ONIG_OPTIMIZE_EXACT_IC:
case ONIG_OPTIMIZE_EXACT_BM_IC:
case ONIG_OPTIMIZE_EXACT_BM_NOT_REV_IC:
p = slow_search_backward_ic(reg->enc, reg->case_fold_flag,
reg->exact, reg->exact_end,
range, adjrange, end, p);
break;
case ONIG_OPTIMIZE_EXACT_BM:
case ONIG_OPTIMIZE_EXACT_BM_NOT_REV:
#ifdef USE_INT_MAP_BACKWARD
if (IS_NULL(reg->int_map_backward)) {
int r;
if (s - range < BM_BACKWARD_SEARCH_LENGTH_THRESHOLD)
goto exact_method;
r = set_bm_backward_skip(reg->exact, reg->exact_end, reg->enc,
&(reg->int_map_backward));
if (r) return r;
}
p = bm_search_backward(reg, reg->exact, reg->exact_end, range, adjrange,
end, p);
#else
goto exact_method;
#endif
break;
case ONIG_OPTIMIZE_MAP:
p = map_search_backward(reg->enc, reg->map, range, adjrange, p, end);
break;
}
if (p) {
if (reg->sub_anchor) {
UChar* prev;
switch (reg->sub_anchor) {
case ANCHOR_BEGIN_LINE:
if (!ON_STR_BEGIN(p)) {
prev = onigenc_get_prev_char_head(reg->enc, str, p, end);
if (!ONIGENC_IS_MBC_NEWLINE_EX(reg->enc, prev, str, end, reg->options, 0)) {
p = prev;
goto retry;
}
}
break;
case ANCHOR_END_LINE:
if (ON_STR_END(p)) {
#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE
prev = onigenc_get_prev_char_head(reg->enc, adjrange, p);
if (IS_NULL(prev)) goto fail;
if (ONIGENC_IS_MBC_NEWLINE_EX(reg->enc, prev, str, end, reg->options, 1)) {
p = prev;
goto retry;
}
#endif
}
else if (! ONIGENC_IS_MBC_NEWLINE_EX(reg->enc, p, str, end, reg->options, 1)) {
p = onigenc_get_prev_char_head(reg->enc, adjrange, p, end);
if (IS_NULL(p)) goto fail;
goto retry;
}
break;
}
}
/* no needs to adjust *high, *high is used as range check only */
if (reg->dmax != ONIG_INFINITE_DISTANCE) {
*low = p - reg->dmax;
*high = p - reg->dmin;
*high = onigenc_get_right_adjust_char_head(reg->enc, adjrange, *high, end);
}
#ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "backward_search_range: low: %d, high: %d\n",
(int )(*low - str), (int )(*high - str));
#endif
return 1; /* success */
}
fail:
#ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "backward_search_range: fail.\n");
#endif
return 0; /* fail */
}
extern OnigPosition
onig_search(regex_t* reg, const UChar* str, const UChar* end,
const UChar* start, const UChar* range, OnigRegion* region, OnigOptionType option)
{
return onig_search_gpos(reg, str, end, start, start, range, region, option);
}
extern OnigPosition
onig_search_gpos(regex_t* reg, const UChar* str, const UChar* end,
const UChar* global_pos,
const UChar* start, const UChar* range, OnigRegion* region, OnigOptionType option)
{
ptrdiff_t r;
UChar *s, *prev;
OnigMatchArg msa;
#ifdef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE
const UChar *orig_start = start;
const UChar *orig_range = range;
#endif
#ifdef ONIG_DEBUG_SEARCH
fprintf(stderr,
"onig_search (entry point): str: %"PRIuPTR" (%p), end: %"PRIuPTR", start: %"PRIuPTR", range: %"PRIuPTR"\n",
(uintptr_t )str, str, end - str, start - str, range - str);
#endif
if (region) {
r = onig_region_resize_clear(region, reg->num_mem + 1);
if (r) goto finish_no_msa;
}
if (start > end || start < str) goto mismatch_no_msa;
#ifdef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE
# ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE
# define MATCH_AND_RETURN_CHECK(upper_range) \
r = match_at(reg, str, end, (upper_range), s, prev, &msa); \
if (r != ONIG_MISMATCH) {\
if (r >= 0) {\
if (! IS_FIND_LONGEST(reg->options)) {\
goto match;\
}\
}\
else goto finish; /* error */ \
}
# else
# define MATCH_AND_RETURN_CHECK(upper_range) \
r = match_at(reg, str, end, (upper_range), s, prev, &msa); \
if (r != ONIG_MISMATCH) {\
if (r >= 0) {\
goto match;\
}\
else goto finish; /* error */ \
}
# endif /* USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE */
#else
# ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE
# define MATCH_AND_RETURN_CHECK(none) \
r = match_at(reg, str, end, s, prev, &msa);\
if (r != ONIG_MISMATCH) {\
if (r >= 0) {\
if (! IS_FIND_LONGEST(reg->options)) {\
goto match;\
}\
}\
else goto finish; /* error */ \
}
# else
# define MATCH_AND_RETURN_CHECK(none) \
r = match_at(reg, str, end, s, prev, &msa);\
if (r != ONIG_MISMATCH) {\
if (r >= 0) {\
goto match;\
}\
else goto finish; /* error */ \
}
# endif /* USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE */
#endif /* USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE */
/* anchor optimize: resume search range */
if (reg->anchor != 0 && str < end) {
UChar *min_semi_end, *max_semi_end;
if (reg->anchor & ANCHOR_BEGIN_POSITION) {
/* search start-position only */
begin_position:
if (range > start)
{
if (global_pos > start)
{
if (global_pos < range)
range = global_pos + 1;
}
else
range = start + 1;
}
else
range = start;
}
else if (reg->anchor & ANCHOR_BEGIN_BUF) {
/* search str-position only */
if (range > start) {
if (start != str) goto mismatch_no_msa;
range = str + 1;
}
else {
if (range <= str) {
start = str;
range = str;
}
else
goto mismatch_no_msa;
}
}
else if (reg->anchor & ANCHOR_END_BUF) {
min_semi_end = max_semi_end = (UChar* )end;
end_buf:
if ((OnigDistance )(max_semi_end - str) < reg->anchor_dmin)
goto mismatch_no_msa;
if (range > start) {
if ((OnigDistance )(min_semi_end - start) > reg->anchor_dmax) {
start = min_semi_end - reg->anchor_dmax;
if (start < end)
start = onigenc_get_right_adjust_char_head(reg->enc, str, start, end);
}
if ((OnigDistance )(max_semi_end - (range - 1)) < reg->anchor_dmin) {
range = max_semi_end - reg->anchor_dmin + 1;
}
if (start > range) goto mismatch_no_msa;
/* If start == range, match with empty at end.
Backward search is used. */
}
else {
if ((OnigDistance )(min_semi_end - range) > reg->anchor_dmax) {
range = min_semi_end - reg->anchor_dmax;
}
if ((OnigDistance )(max_semi_end - start) < reg->anchor_dmin) {
start = max_semi_end - reg->anchor_dmin;
start = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc, str, start, end);
}
if (range > start) goto mismatch_no_msa;
}
}
else if (reg->anchor & ANCHOR_SEMI_END_BUF) {
UChar* pre_end = ONIGENC_STEP_BACK(reg->enc, str, end, end, 1);
max_semi_end = (UChar* )end;
if (ONIGENC_IS_MBC_NEWLINE(reg->enc, pre_end, end)) {
min_semi_end = pre_end;
#ifdef USE_CRNL_AS_LINE_TERMINATOR
pre_end = ONIGENC_STEP_BACK(reg->enc, str, pre_end, end, 1);
if (IS_NOT_NULL(pre_end) &&
IS_NEWLINE_CRLF(reg->options) &&
ONIGENC_IS_MBC_CRNL(reg->enc, pre_end, end)) {
min_semi_end = pre_end;
}
#endif
if (min_semi_end > str && start <= min_semi_end) {
goto end_buf;
}
}
else {
min_semi_end = (UChar* )end;
goto end_buf;
}
}
else if ((reg->anchor & ANCHOR_ANYCHAR_STAR_ML)) {
goto begin_position;
}
}
else if (str == end) { /* empty string */
static const UChar address_for_empty_string[] = "";
#ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "onig_search: empty string.\n");
#endif
if (reg->threshold_len == 0) {
start = end = str = address_for_empty_string;
s = (UChar* )start;
prev = (UChar* )NULL;
MATCH_ARG_INIT(msa, option, region, start, start);
#ifdef USE_COMBINATION_EXPLOSION_CHECK
msa.state_check_buff = (void* )0;
msa.state_check_buff_size = 0; /* NO NEED, for valgrind */
#endif
MATCH_AND_RETURN_CHECK(end);
goto mismatch;
}
goto mismatch_no_msa;
}
#ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "onig_search(apply anchor): end: %d, start: %d, range: %d\n",
(int )(end - str), (int )(start - str), (int )(range - str));
#endif
MATCH_ARG_INIT(msa, option, region, start, global_pos);
#ifdef USE_COMBINATION_EXPLOSION_CHECK
{
ptrdiff_t offset = (MIN(start, range) - str);
STATE_CHECK_BUFF_INIT(msa, end - str, offset, reg->num_comb_exp_check);
}
#endif
s = (UChar* )start;
if (range > start) { /* forward search */
if (s > str)
prev = onigenc_get_prev_char_head(reg->enc, str, s, end);
else
prev = (UChar* )NULL;
if (reg->optimize != ONIG_OPTIMIZE_NONE) {
UChar *sch_range, *low, *high, *low_prev;
sch_range = (UChar* )range;
if (reg->dmax != 0) {
if (reg->dmax == ONIG_INFINITE_DISTANCE)
sch_range = (UChar* )end;
else {
sch_range += reg->dmax;
if (sch_range > end) sch_range = (UChar* )end;
}
}
if ((end - start) < reg->threshold_len)
goto mismatch;
if (reg->dmax != ONIG_INFINITE_DISTANCE) {
do {
if (! forward_search_range(reg, str, end, s, sch_range,
&low, &high, &low_prev)) goto mismatch;
if (s < low) {
s = low;
prev = low_prev;
}
while (s <= high) {
MATCH_AND_RETURN_CHECK(orig_range);
prev = s;
s += enclen(reg->enc, s, end);
}
} while (s < range);
goto mismatch;
}
else { /* check only. */
if (! forward_search_range(reg, str, end, s, sch_range,
&low, &high, (UChar** )NULL)) goto mismatch;
if ((reg->anchor & ANCHOR_ANYCHAR_STAR) != 0) {
do {
MATCH_AND_RETURN_CHECK(orig_range);
prev = s;
s += enclen(reg->enc, s, end);
if ((reg->anchor & (ANCHOR_LOOK_BEHIND | ANCHOR_PREC_READ_NOT)) == 0) {
while (!ONIGENC_IS_MBC_NEWLINE_EX(reg->enc, prev, str, end, reg->options, 0)
&& s < range) {
prev = s;
s += enclen(reg->enc, s, end);
}
}
} while (s < range);
goto mismatch;
}
}
}
do {
MATCH_AND_RETURN_CHECK(orig_range);
prev = s;
s += enclen(reg->enc, s, end);
} while (s < range);
if (s == range) { /* because empty match with /$/. */
MATCH_AND_RETURN_CHECK(orig_range);
}
}
else { /* backward search */
if (reg->optimize != ONIG_OPTIMIZE_NONE) {
UChar *low, *high, *adjrange, *sch_start;
if (range < end)
adjrange = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc, str, range, end);
else
adjrange = (UChar* )end;
if (reg->dmax != ONIG_INFINITE_DISTANCE &&
(end - range) >= reg->threshold_len) {
do {
sch_start = s + reg->dmax;
if (sch_start > end) sch_start = (UChar* )end;
if (backward_search_range(reg, str, end, sch_start, range, adjrange,
&low, &high) <= 0)
goto mismatch;
if (s > high)
s = high;
while (s >= low) {
prev = onigenc_get_prev_char_head(reg->enc, str, s, end);
MATCH_AND_RETURN_CHECK(orig_start);
s = prev;
}
} while (s >= range);
goto mismatch;
}
else { /* check only. */
if ((end - range) < reg->threshold_len) goto mismatch;
sch_start = s;
if (reg->dmax != 0) {
if (reg->dmax == ONIG_INFINITE_DISTANCE)
sch_start = (UChar* )end;
else {
sch_start += reg->dmax;
if (sch_start > end) sch_start = (UChar* )end;
else
sch_start = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc,
start, sch_start, end);
}
}
if (backward_search_range(reg, str, end, sch_start, range, adjrange,
&low, &high) <= 0) goto mismatch;
}
}
do {
prev = onigenc_get_prev_char_head(reg->enc, str, s, end);
MATCH_AND_RETURN_CHECK(orig_start);
s = prev;
} while (s >= range);
}
mismatch:
#ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE
if (IS_FIND_LONGEST(reg->options)) {
if (msa.best_len >= 0) {
s = msa.best_s;
goto match;
}
}
#endif
r = ONIG_MISMATCH;
finish:
MATCH_ARG_FREE(msa);
/* If result is mismatch and no FIND_NOT_EMPTY option,
then the region is not set in match_at(). */
if (IS_FIND_NOT_EMPTY(reg->options) && region) {
onig_region_clear(region);
}
#ifdef ONIG_DEBUG
if (r != ONIG_MISMATCH)
fprintf(stderr, "onig_search: error %"PRIdPTRDIFF"\n", r);
#endif
return r;
mismatch_no_msa:
r = ONIG_MISMATCH;
finish_no_msa:
#ifdef ONIG_DEBUG
if (r != ONIG_MISMATCH)
fprintf(stderr, "onig_search: error %"PRIdPTRDIFF"\n", r);
#endif
return r;
match:
MATCH_ARG_FREE(msa);
return s - str;
}
extern OnigPosition
onig_scan(regex_t* reg, const UChar* str, const UChar* end,
OnigRegion* region, OnigOptionType option,
int (*scan_callback)(OnigPosition, OnigPosition, OnigRegion*, void*),
void* callback_arg)
{
OnigPosition r;
OnigPosition n;
int rs;
const UChar* start;
n = 0;
start = str;
while (1) {
r = onig_search(reg, str, end, start, end, region, option);
if (r >= 0) {
rs = scan_callback(n, r, region, callback_arg);
n++;
if (rs != 0)
return rs;
if (region->end[0] == start - str) {
if (start >= end) break;
start += enclen(reg->enc, start, end);
}
else
start = str + region->end[0];
if (start > end)
break;
}
else if (r == ONIG_MISMATCH) {
break;
}
else { /* error */
return r;
}
}
return n;
}
extern OnigEncoding
onig_get_encoding(const regex_t* reg)
{
return reg->enc;
}
extern OnigOptionType
onig_get_options(const regex_t* reg)
{
return reg->options;
}
extern OnigCaseFoldType
onig_get_case_fold_flag(const regex_t* reg)
{
return reg->case_fold_flag;
}
extern const OnigSyntaxType*
onig_get_syntax(const regex_t* reg)
{
return reg->syntax;
}
extern int
onig_number_of_captures(const regex_t* reg)
{
return reg->num_mem;
}
extern int
onig_number_of_capture_histories(const regex_t* reg)
{
#ifdef USE_CAPTURE_HISTORY
int i, n;
n = 0;
for (i = 0; i <= ONIG_MAX_CAPTURE_HISTORY_GROUP; i++) {
if (BIT_STATUS_AT(reg->capture_history, i) != 0)
n++;
}
return n;
#else
return 0;
#endif
}
extern void
onig_copy_encoding(OnigEncodingType *to, OnigEncoding from)
{
*to = *from;
}
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