[mirror_edk2.git] / MdeModulePkg / Universal / RegularExpressionDxe / Oniguruma / regcomp.c

/**********************************************************************\r
  regcomp.c -  Oniguruma (regular expression library)\r
**********************************************************************/\r
/*-\r
 * Copyright (c) 2002-2018  K.Kosako  <sndgk393 AT ybb DOT ne DOT jp>\r
 * All rights reserved.\r
 *\r
 * Redistribution and use in source and binary forms, with or without\r
 * modification, are permitted provided that the following conditions\r
 * are met:\r
 * 1. Redistributions of source code must retain the above copyright\r
 *    notice, this list of conditions and the following disclaimer.\r
 * 2. Redistributions in binary form must reproduce the above copyright\r
 *    notice, this list of conditions and the following disclaimer in the\r
 *    documentation and/or other materials provided with the distribution.\r
 *\r
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND\r
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE\r
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
 * SUCH DAMAGE.\r
 */\r
\r
#include "regparse.h"\r
\r
OnigCaseFoldType OnigDefaultCaseFoldFlag = ONIGENC_CASE_FOLD_MIN;\r
\r
#if 0\r
typedef struct {\r
  int  n;\r
  int  alloc;\r
  int* v;\r
} int_stack;\r
\r
static int\r
make_int_stack(int_stack** rs, int init_size)\r
{\r
  int_stack* s;\r
  int* v;\r
\r
  *rs = 0;\r
\r
  s = xmalloc(sizeof(*s));\r
  if (IS_NULL(s)) return ONIGERR_MEMORY;\r
\r
  v = (int* )xmalloc(sizeof(int) * init_size);\r
  if (IS_NULL(v)) {\r
    xfree(s);\r
    return ONIGERR_MEMORY;\r
  }\r
\r
  s->n = 0;\r
  s->alloc = init_size;\r
  s->v = v;\r
\r
  *rs = s;\r
  return ONIG_NORMAL;\r
}\r
\r
static void\r
free_int_stack(int_stack* s)\r
{\r
  if (IS_NOT_NULL(s)) {\r
    if (IS_NOT_NULL(s->v))\r
      xfree(s->v);\r
    xfree(s);\r
  }\r
}\r
\r
static int\r
int_stack_push(int_stack* s, int v)\r
{\r
  if (s->n >= s->alloc) {\r
    int new_size = s->alloc * 2;\r
    int* nv = (int* )xrealloc(s->v, sizeof(int) * new_size);\r
    if (IS_NULL(nv)) return ONIGERR_MEMORY;\r
\r
    s->alloc = new_size;\r
    s->v = nv;\r
  }\r
\r
  s->v[s->n] = v;\r
  s->n++;\r
  return ONIG_NORMAL;\r
}\r
\r
static int\r
int_stack_pop(int_stack* s)\r
{\r
  int v;\r
\r
#ifdef ONIG_DEBUG\r
  if (s->n <= 0) {\r
    fprintf(stderr, "int_stack_pop: fail empty. %p\n", s);\r
    return 0;\r
  }\r
#endif\r
\r
  v = s->v[s->n];\r
  s->n--;\r
  return v;\r
}\r
#endif\r
\r
extern OnigCaseFoldType\r
onig_get_default_case_fold_flag(void)\r
{\r
  return OnigDefaultCaseFoldFlag;\r
}\r
\r
extern int\r
onig_set_default_case_fold_flag(OnigCaseFoldType case_fold_flag)\r
{\r
  OnigDefaultCaseFoldFlag = case_fold_flag;\r
  return 0;\r
}\r
\r
static int\r
int_multiply_cmp(int x, int y, int v)\r
{\r
  if (x == 0 || y == 0) return -1;\r
\r
  if (x < INT_MAX / y) {\r
    int xy = x * y;\r
    if (xy > v) return 1;\r
    else {\r
      if (xy == v) return 0;\r
      else return -1;\r
    }\r
  }\r
  else\r
    return 1;\r
}\r
\r
\r
#ifndef PLATFORM_UNALIGNED_WORD_ACCESS\r
static unsigned char PadBuf[WORD_ALIGNMENT_SIZE];\r
#endif\r
\r
static void\r
swap_node(Node* a, Node* b)\r
{\r
  Node c;\r
\r
  c = *a; *a = *b; *b = c;\r
\r
  if (NODE_TYPE(a) == NODE_STRING) {\r
    StrNode* sn = STR_(a);\r
    if (sn->capa == 0) {\r
      int len = (int )(sn->end - sn->s);\r
      sn->s   = sn->buf;\r
      sn->end = sn->s + len;\r
    }\r
  }\r
\r
  if (NODE_TYPE(b) == NODE_STRING) {\r
    StrNode* sn = STR_(b);\r
    if (sn->capa == 0) {\r
      int len = (int )(sn->end - sn->s);\r
      sn->s   = sn->buf;\r
      sn->end = sn->s + len;\r
    }\r
  }\r
}\r
\r
static OnigLen\r
distance_add(OnigLen d1, OnigLen d2)\r
{\r
  if (d1 == INFINITE_LEN || d2 == INFINITE_LEN)\r
    return INFINITE_LEN;\r
  else {\r
    if (d1 <= INFINITE_LEN - d2) return d1 + d2;\r
    else return INFINITE_LEN;\r
  }\r
}\r
\r
static OnigLen\r
distance_multiply(OnigLen d, int m)\r
{\r
  if (m == 0) return 0;\r
\r
  if (d < INFINITE_LEN / m)\r
    return d * m;\r
  else\r
    return INFINITE_LEN;\r
}\r
\r
static int\r
bitset_is_empty(BitSetRef bs)\r
{\r
  int i;\r
\r
  for (i = 0; i < (int )BITSET_SIZE; i++) {\r
    if (bs[i] != 0) return 0;\r
  }\r
  return 1;\r
}\r
\r
extern int\r
onig_bbuf_init(BBuf* buf, int size)\r
{\r
  if (size <= 0) {\r
    size   = 0;\r
    buf->p = NULL;\r
  }\r
  else {\r
    buf->p = (UChar* )xmalloc(size);\r
    if (IS_NULL(buf->p)) return(ONIGERR_MEMORY);\r
  }\r
\r
  buf->alloc = size;\r
  buf->used  = 0;\r
  return 0;\r
}\r
\r
\r
#ifdef USE_CALL\r
\r
static int\r
unset_addr_list_init(UnsetAddrList* list, int size)\r
{\r
  UnsetAddr* p = (UnsetAddr* )xmalloc(sizeof(UnsetAddr)* size);\r
  CHECK_NULL_RETURN_MEMERR(p);\r
\r
  list->num   = 0;\r
  list->alloc = size;\r
  list->us    = p;\r
  return 0;\r
}\r
\r
static void\r
unset_addr_list_end(UnsetAddrList* list)\r
{\r
  if (IS_NOT_NULL(list->us))\r
    xfree(list->us);\r
}\r
\r
static int\r
unset_addr_list_add(UnsetAddrList* list, int offset, struct _Node* node)\r
{\r
  UnsetAddr* p;\r
  int size;\r
\r
  if (list->num >= list->alloc) {\r
    size = list->alloc * 2;\r
    p = (UnsetAddr* )xrealloc(list->us, sizeof(UnsetAddr) * size, sizeof(UnsetAddr)* list->alloc);\r
    CHECK_NULL_RETURN_MEMERR(p);\r
    list->alloc = size;\r
    list->us    = p;\r
  }\r
\r
  list->us[list->num].offset = offset;\r
  list->us[list->num].target = node;\r
  list->num++;\r
  return 0;\r
}\r
#endif /* USE_CALL */\r
\r
\r
static int\r
add_opcode(regex_t* reg, int opcode)\r
{\r
  BB_ADD1(reg, opcode);\r
  return 0;\r
}\r
\r
static int\r
add_rel_addr(regex_t* reg, int addr)\r
{\r
  RelAddrType ra = (RelAddrType )addr;\r
\r
  BB_ADD(reg, &ra, SIZE_RELADDR);\r
  return 0;\r
}\r
\r
static int\r
add_abs_addr(regex_t* reg, int addr)\r
{\r
  AbsAddrType ra = (AbsAddrType )addr;\r
\r
  BB_ADD(reg, &ra, SIZE_ABSADDR);\r
  return 0;\r
}\r
\r
static int\r
add_length(regex_t* reg, int len)\r
{\r
  LengthType l = (LengthType )len;\r
\r
  BB_ADD(reg, &l, SIZE_LENGTH);\r
  return 0;\r
}\r
\r
static int\r
add_mem_num(regex_t* reg, int num)\r
{\r
  MemNumType n = (MemNumType )num;\r
\r
  BB_ADD(reg, &n, SIZE_MEMNUM);\r
  return 0;\r
}\r
\r
#if 0\r
static int\r
add_pointer(regex_t* reg, void* addr)\r
{\r
  PointerType ptr = (PointerType )addr;\r
\r
  BB_ADD(reg, &ptr, SIZE_POINTER);\r
  return 0;\r
}\r
#endif\r
\r
static int\r
add_option(regex_t* reg, OnigOptionType option)\r
{\r
  BB_ADD(reg, &option, SIZE_OPTION);\r
  return 0;\r
}\r
\r
static int\r
add_save_type(regex_t* reg, enum SaveType type)\r
{\r
  SaveType t = (SaveType )type;\r
\r
  BB_ADD(reg, &t, SIZE_SAVE_TYPE);\r
  return 0;\r
}\r
\r
static int\r
add_update_var_type(regex_t* reg, enum UpdateVarType type)\r
{\r
  UpdateVarType t = (UpdateVarType )type;\r
\r
  BB_ADD(reg, &t, SIZE_UPDATE_VAR_TYPE);\r
  return 0;\r
}\r
\r
static int\r
add_mode(regex_t* reg, ModeType mode)\r
{\r
  BB_ADD(reg, &mode, SIZE_MODE);\r
  return 0;\r
}\r
\r
static int\r
add_opcode_rel_addr(regex_t* reg, int opcode, int addr)\r
{\r
  int r;\r
\r
  r = add_opcode(reg, opcode);\r
  if (r != 0) return r;\r
  r = add_rel_addr(reg, addr);\r
  return r;\r
}\r
\r
static int\r
add_bytes(regex_t* reg, UChar* bytes, int len)\r
{\r
  BB_ADD(reg, bytes, len);\r
  return 0;\r
}\r
\r
static int\r
add_bitset(regex_t* reg, BitSetRef bs)\r
{\r
  BB_ADD(reg, bs, SIZE_BITSET);\r
  return 0;\r
}\r
\r
static int compile_length_tree(Node* node, regex_t* reg);\r
static int compile_tree(Node* node, regex_t* reg, ScanEnv* env);\r
\r
\r
#define IS_NEED_STR_LEN_OP_EXACT(op) \\r
   ((op) == OP_EXACTN    || (op) == OP_EXACTMB2N ||\\r
    (op) == OP_EXACTMB3N || (op) == OP_EXACTMBN  || (op) == OP_EXACTN_IC)\r
\r
static int\r
select_str_opcode(int mb_len, int str_len, int ignore_case)\r
{\r
  int op;\r
\r
  if (ignore_case) {\r
    switch (str_len) {\r
    case 1:  op = OP_EXACT1_IC; break;\r
    default: op = OP_EXACTN_IC; break;\r
    }\r
  }\r
  else {\r
    switch (mb_len) {\r
    case 1:\r
      switch (str_len) {\r
      case 1:  op = OP_EXACT1; break;\r
      case 2:  op = OP_EXACT2; break;\r
      case 3:  op = OP_EXACT3; break;\r
      case 4:  op = OP_EXACT4; break;\r
      case 5:  op = OP_EXACT5; break;\r
      default: op = OP_EXACTN; break;\r
      }\r
      break;\r
\r
    case 2:\r
      switch (str_len) {\r
      case 1:  op = OP_EXACTMB2N1; break;\r
      case 2:  op = OP_EXACTMB2N2; break;\r
      case 3:  op = OP_EXACTMB2N3; break;\r
      default: op = OP_EXACTMB2N;  break;\r
      }\r
      break;\r
\r
    case 3:\r
      op = OP_EXACTMB3N;\r
      break;\r
\r
    default:\r
      op = OP_EXACTMBN;\r
      break;\r
    }\r
  }\r
  return op;\r
}\r
\r
static int\r
compile_tree_empty_check(Node* node, regex_t* reg, int empty_info, ScanEnv* env)\r
{\r
  int r;\r
  int saved_num_null_check = reg->num_null_check;\r
\r
  if (empty_info != QUANT_BODY_IS_NOT_EMPTY) {\r
    r = add_opcode(reg, OP_EMPTY_CHECK_START);\r
    if (r != 0) return r;\r
    r = add_mem_num(reg, reg->num_null_check); /* NULL CHECK ID */\r
    if (r != 0) return r;\r
    reg->num_null_check++;\r
  }\r
\r
  r = compile_tree(node, reg, env);\r
  if (r != 0) return r;\r
\r
  if (empty_info != QUANT_BODY_IS_NOT_EMPTY) {\r
    if (empty_info == QUANT_BODY_IS_EMPTY)\r
      r = add_opcode(reg, OP_EMPTY_CHECK_END);\r
    else if (empty_info == QUANT_BODY_IS_EMPTY_MEM)\r
      r = add_opcode(reg, OP_EMPTY_CHECK_END_MEMST);\r
    else if (empty_info == QUANT_BODY_IS_EMPTY_REC)\r
      r = add_opcode(reg, OP_EMPTY_CHECK_END_MEMST_PUSH);\r
\r
    if (r != 0) return r;\r
    r = add_mem_num(reg, saved_num_null_check); /* NULL CHECK ID */\r
  }\r
  return r;\r
}\r
\r
#ifdef USE_CALL\r
static int\r
compile_call(CallNode* node, regex_t* reg, ScanEnv* env)\r
{\r
  int r;\r
\r
  r = add_opcode(reg, OP_CALL);\r
  if (r != 0) return r;\r
  r = unset_addr_list_add(env->unset_addr_list, BB_GET_OFFSET_POS(reg),\r
                          NODE_CALL_BODY(node));\r
  if (r != 0) return r;\r
  r = add_abs_addr(reg, 0 /*dummy addr.*/);\r
  return r;\r
}\r
#endif\r
\r
static int\r
compile_tree_n_times(Node* node, int n, regex_t* reg, ScanEnv* env)\r
{\r
  int i, r;\r
\r
  for (i = 0; i < n; i++) {\r
    r = compile_tree(node, reg, env);\r
    if (r != 0) return r;\r
  }\r
  return 0;\r
}\r
\r
static int\r
add_compile_string_length(UChar* s ARG_UNUSED, int mb_len, int str_len,\r
                          regex_t* reg ARG_UNUSED, int ignore_case)\r
{\r
  int len;\r
  int op = select_str_opcode(mb_len, str_len, ignore_case);\r
\r
  len = SIZE_OPCODE;\r
\r
  if (op == OP_EXACTMBN)  len += SIZE_LENGTH;\r
  if (IS_NEED_STR_LEN_OP_EXACT(op))\r
    len += SIZE_LENGTH;\r
\r
  len += mb_len * str_len;\r
  return len;\r
}\r
\r
static int\r
add_compile_string(UChar* s, int mb_len, int str_len,\r
                   regex_t* reg, int ignore_case)\r
{\r
  int op = select_str_opcode(mb_len, str_len, ignore_case);\r
  add_opcode(reg, op);\r
\r
  if (op == OP_EXACTMBN)\r
    add_length(reg, mb_len);\r
\r
  if (IS_NEED_STR_LEN_OP_EXACT(op)) {\r
    if (op == OP_EXACTN_IC)\r
      add_length(reg, mb_len * str_len);\r
    else\r
      add_length(reg, str_len);\r
  }\r
\r
  add_bytes(reg, s, mb_len * str_len);\r
  return 0;\r
}\r
\r
\r
static int\r
compile_length_string_node(Node* node, regex_t* reg)\r
{\r
  int rlen, r, len, prev_len, slen, ambig;\r
  UChar *p, *prev;\r
  StrNode* sn;\r
  OnigEncoding enc = reg->enc;\r
\r
  sn = STR_(node);\r
  if (sn->end <= sn->s)\r
    return 0;\r
\r
  ambig = NODE_STRING_IS_AMBIG(node);\r
\r
  p = prev = sn->s;\r
  prev_len = enclen(enc, p);\r
  p += prev_len;\r
  slen = 1;\r
  rlen = 0;\r
\r
  for (; p < sn->end; ) {\r
    len = enclen(enc, p);\r
    if (len == prev_len) {\r
      slen++;\r
    }\r
    else {\r
      r = add_compile_string_length(prev, prev_len, slen, reg, ambig);\r
      rlen += r;\r
      prev = p;\r
      slen = 1;\r
      prev_len = len;\r
    }\r
    p += len;\r
  }\r
\r
  r = add_compile_string_length(prev, prev_len, slen, reg, ambig);\r
  rlen += r;\r
  return rlen;\r
}\r
\r
static int\r
compile_length_string_raw_node(StrNode* sn, regex_t* reg)\r
{\r
  if (sn->end <= sn->s)\r
    return 0;\r
\r
  return add_compile_string_length(sn->s, 1 /* sb */, (int )(sn->end - sn->s),\r
                                   reg, 0);\r
}\r
\r
static int\r
compile_string_node(Node* node, regex_t* reg)\r
{\r
  int r, len, prev_len, slen, ambig;\r
  UChar *p, *prev, *end;\r
  StrNode* sn;\r
  OnigEncoding enc = reg->enc;\r
\r
  sn = STR_(node);\r
  if (sn->end <= sn->s)\r
    return 0;\r
\r
  end = sn->end;\r
  ambig = NODE_STRING_IS_AMBIG(node);\r
\r
  p = prev = sn->s;\r
  prev_len = enclen(enc, p);\r
  p += prev_len;\r
  slen = 1;\r
\r
  for (; p < end; ) {\r
    len = enclen(enc, p);\r
    if (len == prev_len) {\r
      slen++;\r
    }\r
    else {\r
      r = add_compile_string(prev, prev_len, slen, reg, ambig);\r
      if (r != 0) return r;\r
\r
      prev  = p;\r
      slen  = 1;\r
      prev_len = len;\r
    }\r
\r
    p += len;\r
  }\r
\r
  return add_compile_string(prev, prev_len, slen, reg, ambig);\r
}\r
\r
static int\r
compile_string_raw_node(StrNode* sn, regex_t* reg)\r
{\r
  if (sn->end <= sn->s)\r
    return 0;\r
\r
  return add_compile_string(sn->s, 1 /* sb */, (int )(sn->end - sn->s), reg, 0);\r
}\r
\r
static int\r
add_multi_byte_cclass(BBuf* mbuf, regex_t* reg)\r
{\r
#ifdef PLATFORM_UNALIGNED_WORD_ACCESS\r
  add_length(reg, mbuf->used);\r
  return add_bytes(reg, mbuf->p, mbuf->used);\r
#else\r
  int r, pad_size;\r
  UChar* p = BB_GET_ADD_ADDRESS(reg) + SIZE_LENGTH;\r
\r
  GET_ALIGNMENT_PAD_SIZE(p, pad_size);\r
  add_length(reg, mbuf->used + (WORD_ALIGNMENT_SIZE - 1));\r
  if (pad_size != 0) add_bytes(reg, PadBuf, pad_size);\r
\r
  r = add_bytes(reg, mbuf->p, mbuf->used);\r
\r
  /* padding for return value from compile_length_cclass_node() to be fix. */\r
  pad_size = (WORD_ALIGNMENT_SIZE - 1) - pad_size;\r
  if (pad_size != 0) add_bytes(reg, PadBuf, pad_size);\r
  return r;\r
#endif\r
}\r
\r
static int\r
compile_length_cclass_node(CClassNode* cc, regex_t* reg)\r
{\r
  int len;\r
\r
  if (IS_NULL(cc->mbuf)) {\r
    len = SIZE_OPCODE + SIZE_BITSET;\r
  }\r
  else {\r
    if (ONIGENC_MBC_MINLEN(reg->enc) > 1 || bitset_is_empty(cc->bs)) {\r
      len = SIZE_OPCODE;\r
    }\r
    else {\r
      len = SIZE_OPCODE + SIZE_BITSET;\r
    }\r
#ifdef PLATFORM_UNALIGNED_WORD_ACCESS\r
    len += SIZE_LENGTH + cc->mbuf->used;\r
#else\r
    len += SIZE_LENGTH + cc->mbuf->used + (WORD_ALIGNMENT_SIZE - 1);\r
#endif\r
  }\r
\r
  return len;\r
}\r
\r
static int\r
compile_cclass_node(CClassNode* cc, regex_t* reg)\r
{\r
  int r;\r
\r
  if (IS_NULL(cc->mbuf)) {\r
    if (IS_NCCLASS_NOT(cc))\r
      add_opcode(reg, OP_CCLASS_NOT);\r
    else\r
      add_opcode(reg, OP_CCLASS);\r
\r
    r = add_bitset(reg, cc->bs);\r
  }\r
  else {\r
    if (ONIGENC_MBC_MINLEN(reg->enc) > 1 || bitset_is_empty(cc->bs)) {\r
      if (IS_NCCLASS_NOT(cc))\r
        add_opcode(reg, OP_CCLASS_MB_NOT);\r
      else\r
        add_opcode(reg, OP_CCLASS_MB);\r
\r
      r = add_multi_byte_cclass(cc->mbuf, reg);\r
    }\r
    else {\r
      if (IS_NCCLASS_NOT(cc))\r
        add_opcode(reg, OP_CCLASS_MIX_NOT);\r
      else\r
        add_opcode(reg, OP_CCLASS_MIX);\r
\r
      r = add_bitset(reg, cc->bs);\r
      if (r != 0) return r;\r
      r = add_multi_byte_cclass(cc->mbuf, reg);\r
    }\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
entry_repeat_range(regex_t* reg, int id, int lower, int upper)\r
{\r
#define REPEAT_RANGE_ALLOC  4\r
\r
  OnigRepeatRange* p;\r
\r
  if (reg->repeat_range_alloc == 0) {\r
    p = (OnigRepeatRange* )xmalloc(sizeof(OnigRepeatRange) * REPEAT_RANGE_ALLOC);\r
    CHECK_NULL_RETURN_MEMERR(p);\r
    reg->repeat_range = p;\r
    reg->repeat_range_alloc = REPEAT_RANGE_ALLOC;\r
  }\r
  else if (reg->repeat_range_alloc <= id) {\r
    int n;\r
    n = reg->repeat_range_alloc + REPEAT_RANGE_ALLOC;\r
    p = (OnigRepeatRange* )xrealloc(reg->repeat_range,\r
                                    sizeof(OnigRepeatRange) * n,\r
                                    sizeof(OnigRepeatRange) * reg->repeat_range_alloc);\r
    CHECK_NULL_RETURN_MEMERR(p);\r
    reg->repeat_range = p;\r
    reg->repeat_range_alloc = n;\r
  }\r
  else {\r
    p = reg->repeat_range;\r
  }\r
\r
  p[id].lower = lower;\r
  p[id].upper = (IS_REPEAT_INFINITE(upper) ? 0x7fffffff : upper);\r
  return 0;\r
}\r
\r
static int\r
compile_range_repeat_node(QuantNode* qn, int target_len, int empty_info,\r
                          regex_t* reg, ScanEnv* env)\r
{\r
  int r;\r
  int num_repeat = reg->num_repeat;\r
\r
  r = add_opcode(reg, qn->greedy ? OP_REPEAT : OP_REPEAT_NG);\r
  if (r != 0) return r;\r
  r = add_mem_num(reg, num_repeat); /* OP_REPEAT ID */\r
  reg->num_repeat++;\r
  if (r != 0) return r;\r
  r = add_rel_addr(reg, target_len + SIZE_OP_REPEAT_INC);\r
  if (r != 0) return r;\r
\r
  r = entry_repeat_range(reg, num_repeat, qn->lower, qn->upper);\r
  if (r != 0) return r;\r
\r
  r = compile_tree_empty_check(NODE_QUANT_BODY(qn), reg, empty_info, env);\r
  if (r != 0) return r;\r
\r
  if (\r
#ifdef USE_CALL\r
      NODE_IS_IN_MULTI_ENTRY(qn) ||\r
#endif\r
      NODE_IS_IN_REAL_REPEAT(qn)) {\r
    r = add_opcode(reg, qn->greedy ? OP_REPEAT_INC_SG : OP_REPEAT_INC_NG_SG);\r
  }\r
  else {\r
    r = add_opcode(reg, qn->greedy ? OP_REPEAT_INC : OP_REPEAT_INC_NG);\r
  }\r
  if (r != 0) return r;\r
  r = add_mem_num(reg, num_repeat); /* OP_REPEAT ID */\r
  return r;\r
}\r
\r
static int\r
is_anychar_infinite_greedy(QuantNode* qn)\r
{\r
  if (qn->greedy && IS_REPEAT_INFINITE(qn->upper) &&\r
      NODE_IS_ANYCHAR(NODE_QUANT_BODY(qn)))\r
    return 1;\r
  else\r
    return 0;\r
}\r
\r
#define QUANTIFIER_EXPAND_LIMIT_SIZE   50\r
#define CKN_ON   (ckn > 0)\r
\r
static int\r
compile_length_quantifier_node(QuantNode* qn, regex_t* reg)\r
{\r
  int len, mod_tlen;\r
  int infinite = IS_REPEAT_INFINITE(qn->upper);\r
  enum QuantBodyEmpty empty_info = qn->body_empty_info;\r
  int tlen = compile_length_tree(NODE_QUANT_BODY(qn), reg);\r
\r
  if (tlen < 0) return tlen;\r
  if (tlen == 0) return 0;\r
\r
  /* anychar repeat */\r
  if (is_anychar_infinite_greedy(qn)) {\r
    if (qn->lower <= 1 ||\r
        int_multiply_cmp(tlen, qn->lower, QUANTIFIER_EXPAND_LIMIT_SIZE) <= 0) {\r
      if (IS_NOT_NULL(qn->next_head_exact))\r
        return SIZE_OP_ANYCHAR_STAR_PEEK_NEXT + tlen * qn->lower;\r
      else\r
        return SIZE_OP_ANYCHAR_STAR + tlen * qn->lower;\r
    }\r
  }\r
\r
  if (empty_info == QUANT_BODY_IS_NOT_EMPTY)\r
    mod_tlen = tlen;\r
  else\r
    mod_tlen = tlen + (SIZE_OP_EMPTY_CHECK_START + SIZE_OP_EMPTY_CHECK_END);\r
\r
  if (infinite &&\r
      (qn->lower <= 1 ||\r
       int_multiply_cmp(tlen, qn->lower, QUANTIFIER_EXPAND_LIMIT_SIZE) <= 0)) {\r
    if (qn->lower == 1 && tlen > QUANTIFIER_EXPAND_LIMIT_SIZE) {\r
      len = SIZE_OP_JUMP;\r
    }\r
    else {\r
      len = tlen * qn->lower;\r
    }\r
\r
    if (qn->greedy) {\r
      if (IS_NOT_NULL(qn->head_exact))\r
        len += SIZE_OP_PUSH_OR_JUMP_EXACT1 + mod_tlen + SIZE_OP_JUMP;\r
      else if (IS_NOT_NULL(qn->next_head_exact))\r
        len += SIZE_OP_PUSH_IF_PEEK_NEXT + mod_tlen + SIZE_OP_JUMP;\r
      else\r
        len += SIZE_OP_PUSH + mod_tlen + SIZE_OP_JUMP;\r
    }\r
    else\r
      len += SIZE_OP_JUMP + mod_tlen + SIZE_OP_PUSH;\r
  }\r
  else if (qn->upper == 0 && qn->is_refered != 0) { /* /(?<n>..){0}/ */\r
    len = SIZE_OP_JUMP + tlen;\r
  }\r
  else if (!infinite && qn->greedy &&\r
           (qn->upper == 1 ||\r
            int_multiply_cmp(tlen + SIZE_OP_PUSH, qn->upper,\r
                             QUANTIFIER_EXPAND_LIMIT_SIZE) <= 0)) {\r
    len = tlen * qn->lower;\r
    len += (SIZE_OP_PUSH + tlen) * (qn->upper - qn->lower);\r
  }\r
  else if (!qn->greedy && qn->upper == 1 && qn->lower == 0) { /* '??' */\r
    len = SIZE_OP_PUSH + SIZE_OP_JUMP + tlen;\r
  }\r
  else {\r
    len = SIZE_OP_REPEAT_INC\r
        + mod_tlen + SIZE_OPCODE + SIZE_RELADDR + SIZE_MEMNUM;\r
  }\r
\r
  return len;\r
}\r
\r
static int\r
compile_quantifier_node(QuantNode* qn, regex_t* reg, ScanEnv* env)\r
{\r
  int i, r, mod_tlen;\r
  int infinite = IS_REPEAT_INFINITE(qn->upper);\r
  enum QuantBodyEmpty empty_info = qn->body_empty_info;\r
  int tlen = compile_length_tree(NODE_QUANT_BODY(qn), reg);\r
\r
  if (tlen < 0) return tlen;\r
  if (tlen == 0) return 0;\r
\r
  if (is_anychar_infinite_greedy(qn) &&\r
      (qn->lower <= 1 ||\r
       int_multiply_cmp(tlen, qn->lower, QUANTIFIER_EXPAND_LIMIT_SIZE) <= 0)) {\r
    r = compile_tree_n_times(NODE_QUANT_BODY(qn), qn->lower, reg, env);\r
    if (r != 0) return r;\r
    if (IS_NOT_NULL(qn->next_head_exact)) {\r
      if (IS_MULTILINE(CTYPE_OPTION(NODE_QUANT_BODY(qn), reg)))\r
        r = add_opcode(reg, OP_ANYCHAR_ML_STAR_PEEK_NEXT);\r
      else\r
        r = add_opcode(reg, OP_ANYCHAR_STAR_PEEK_NEXT);\r
      if (r != 0) return r;\r
      return add_bytes(reg, STR_(qn->next_head_exact)->s, 1);\r
    }\r
    else {\r
      if (IS_MULTILINE(CTYPE_OPTION(NODE_QUANT_BODY(qn), reg)))\r
        return add_opcode(reg, OP_ANYCHAR_ML_STAR);\r
      else\r
        return add_opcode(reg, OP_ANYCHAR_STAR);\r
    }\r
  }\r
\r
  if (empty_info == QUANT_BODY_IS_NOT_EMPTY)\r
    mod_tlen = tlen;\r
  else\r
    mod_tlen = tlen + (SIZE_OP_EMPTY_CHECK_START + SIZE_OP_EMPTY_CHECK_END);\r
\r
  if (infinite &&\r
      (qn->lower <= 1 ||\r
       int_multiply_cmp(tlen, qn->lower, QUANTIFIER_EXPAND_LIMIT_SIZE) <= 0)) {\r
    if (qn->lower == 1 && tlen > QUANTIFIER_EXPAND_LIMIT_SIZE) {\r
      if (qn->greedy) {\r
        if (IS_NOT_NULL(qn->head_exact))\r
          r = add_opcode_rel_addr(reg, OP_JUMP, SIZE_OP_PUSH_OR_JUMP_EXACT1);\r
        else if (IS_NOT_NULL(qn->next_head_exact))\r
          r = add_opcode_rel_addr(reg, OP_JUMP, SIZE_OP_PUSH_IF_PEEK_NEXT);\r
        else\r
          r = add_opcode_rel_addr(reg, OP_JUMP, SIZE_OP_PUSH);\r
      }\r
      else {\r
        r = add_opcode_rel_addr(reg, OP_JUMP, SIZE_OP_JUMP);\r
      }\r
      if (r != 0) return r;\r
    }\r
    else {\r
      r = compile_tree_n_times(NODE_QUANT_BODY(qn), qn->lower, reg, env);\r
      if (r != 0) return r;\r
    }\r
\r
    if (qn->greedy) {\r
      if (IS_NOT_NULL(qn->head_exact)) {\r
        r = add_opcode_rel_addr(reg, OP_PUSH_OR_JUMP_EXACT1,\r
                                mod_tlen + SIZE_OP_JUMP);\r
        if (r != 0) return r;\r
        add_bytes(reg, STR_(qn->head_exact)->s, 1);\r
        r = compile_tree_empty_check(NODE_QUANT_BODY(qn), reg, empty_info, env);\r
        if (r != 0) return r;\r
        r = add_opcode_rel_addr(reg, OP_JUMP,\r
           -(mod_tlen + (int )SIZE_OP_JUMP + (int )SIZE_OP_PUSH_OR_JUMP_EXACT1));\r
      }\r
      else if (IS_NOT_NULL(qn->next_head_exact)) {\r
        r = add_opcode_rel_addr(reg, OP_PUSH_IF_PEEK_NEXT,\r
                                mod_tlen + SIZE_OP_JUMP);\r
        if (r != 0) return r;\r
        add_bytes(reg, STR_(qn->next_head_exact)->s, 1);\r
        r = compile_tree_empty_check(NODE_QUANT_BODY(qn), reg, empty_info, env);\r
        if (r != 0) return r;\r
        r = add_opcode_rel_addr(reg, OP_JUMP,\r
           -(mod_tlen + (int )SIZE_OP_JUMP + (int )SIZE_OP_PUSH_IF_PEEK_NEXT));\r
      }\r
      else {\r
        r = add_opcode_rel_addr(reg, OP_PUSH, mod_tlen + SIZE_OP_JUMP);\r
        if (r != 0) return r;\r
        r = compile_tree_empty_check(NODE_QUANT_BODY(qn), reg, empty_info, env);\r
        if (r != 0) return r;\r
        r = add_opcode_rel_addr(reg, OP_JUMP,\r
                   -(mod_tlen + (int )SIZE_OP_JUMP + (int )SIZE_OP_PUSH));\r
      }\r
    }\r
    else {\r
      r = add_opcode_rel_addr(reg, OP_JUMP, mod_tlen);\r
      if (r != 0) return r;\r
      r = compile_tree_empty_check(NODE_QUANT_BODY(qn), reg, empty_info, env);\r
      if (r != 0) return r;\r
      r = add_opcode_rel_addr(reg, OP_PUSH, -(mod_tlen + (int )SIZE_OP_PUSH));\r
    }\r
  }\r
  else if (qn->upper == 0 && qn->is_refered != 0) { /* /(?<n>..){0}/ */\r
    r = add_opcode_rel_addr(reg, OP_JUMP, tlen);\r
    if (r != 0) return r;\r
    r = compile_tree(NODE_QUANT_BODY(qn), reg, env);\r
  }\r
  else if (! infinite && qn->greedy &&\r
           (qn->upper == 1 ||\r
            int_multiply_cmp(tlen + SIZE_OP_PUSH, qn->upper,\r
                             QUANTIFIER_EXPAND_LIMIT_SIZE) <= 0)) {\r
    int n = qn->upper - qn->lower;\r
\r
    r = compile_tree_n_times(NODE_QUANT_BODY(qn), qn->lower, reg, env);\r
    if (r != 0) return r;\r
\r
    for (i = 0; i < n; i++) {\r
      r = add_opcode_rel_addr(reg, OP_PUSH,\r
                              (n - i) * tlen + (n - i - 1) * SIZE_OP_PUSH);\r
      if (r != 0) return r;\r
      r = compile_tree(NODE_QUANT_BODY(qn), reg, env);\r
      if (r != 0) return r;\r
    }\r
  }\r
  else if (! qn->greedy && qn->upper == 1 && qn->lower == 0) { /* '??' */\r
    r = add_opcode_rel_addr(reg, OP_PUSH, SIZE_OP_JUMP);\r
    if (r != 0) return r;\r
    r = add_opcode_rel_addr(reg, OP_JUMP, tlen);\r
    if (r != 0) return r;\r
    r = compile_tree(NODE_QUANT_BODY(qn), reg, env);\r
  }\r
  else {\r
    r = compile_range_repeat_node(qn, mod_tlen, empty_info, reg, env);\r
  }\r
  return r;\r
}\r
\r
static int\r
compile_length_option_node(EnclosureNode* node, regex_t* reg)\r
{\r
  int tlen;\r
  OnigOptionType prev = reg->options;\r
\r
  reg->options = node->o.options;\r
  tlen = compile_length_tree(NODE_ENCLOSURE_BODY(node), reg);\r
  reg->options = prev;\r
\r
  return tlen;\r
}\r
\r
static int\r
compile_option_node(EnclosureNode* node, regex_t* reg, ScanEnv* env)\r
{\r
  int r;\r
  OnigOptionType prev = reg->options;\r
\r
  reg->options = node->o.options;\r
  r = compile_tree(NODE_ENCLOSURE_BODY(node), reg, env);\r
  reg->options = prev;\r
\r
  return r;\r
}\r
\r
static int\r
compile_length_enclosure_node(EnclosureNode* node, regex_t* reg)\r
{\r
  int len;\r
  int tlen;\r
\r
  if (node->type == ENCLOSURE_OPTION)\r
    return compile_length_option_node(node, reg);\r
\r
  if (NODE_ENCLOSURE_BODY(node)) {\r
    tlen = compile_length_tree(NODE_ENCLOSURE_BODY(node), reg);\r
    if (tlen < 0) return tlen;\r
  }\r
  else\r
    tlen = 0;\r
\r
  switch (node->type) {\r
  case ENCLOSURE_MEMORY:\r
#ifdef USE_CALL\r
\r
    if (node->m.regnum == 0 && NODE_IS_CALLED(node)) {\r
      len = tlen + SIZE_OP_CALL + SIZE_OP_JUMP + SIZE_OP_RETURN;\r
      return len;\r
    }\r
\r
    if (NODE_IS_CALLED(node)) {\r
      len = SIZE_OP_MEMORY_START_PUSH + tlen\r
        + SIZE_OP_CALL + SIZE_OP_JUMP + SIZE_OP_RETURN;\r
      if (MEM_STATUS_AT0(reg->bt_mem_end, node->m.regnum))\r
        len += (NODE_IS_RECURSION(node)\r
                ? SIZE_OP_MEMORY_END_PUSH_REC : SIZE_OP_MEMORY_END_PUSH);\r
      else\r
        len += (NODE_IS_RECURSION(node)\r
                ? SIZE_OP_MEMORY_END_REC : SIZE_OP_MEMORY_END);\r
    }\r
    else if (NODE_IS_RECURSION(node)) {\r
      len = SIZE_OP_MEMORY_START_PUSH;\r
      len += tlen + (MEM_STATUS_AT0(reg->bt_mem_end, node->m.regnum)\r
                     ? SIZE_OP_MEMORY_END_PUSH_REC : SIZE_OP_MEMORY_END_REC);\r
    }\r
    else\r
#endif\r
    {\r
      if (MEM_STATUS_AT0(reg->bt_mem_start, node->m.regnum))\r
        len = SIZE_OP_MEMORY_START_PUSH;\r
      else\r
        len = SIZE_OP_MEMORY_START;\r
\r
      len += tlen + (MEM_STATUS_AT0(reg->bt_mem_end, node->m.regnum)\r
                     ? SIZE_OP_MEMORY_END_PUSH : SIZE_OP_MEMORY_END);\r
    }\r
    break;\r
\r
  case ENCLOSURE_STOP_BACKTRACK:\r
    if (NODE_IS_STOP_BT_SIMPLE_REPEAT(node)) {\r
      QuantNode* qn = QUANT_(NODE_ENCLOSURE_BODY(node));\r
      tlen = compile_length_tree(NODE_QUANT_BODY(qn), reg);\r
      if (tlen < 0) return tlen;\r
\r
      len = tlen * qn->lower\r
        + SIZE_OP_PUSH + tlen + SIZE_OP_POP_OUT + SIZE_OP_JUMP;\r
    }\r
    else {\r
      len = SIZE_OP_ATOMIC_START + tlen + SIZE_OP_ATOMIC_END;\r
    }\r
    break;\r
\r
  case ENCLOSURE_IF_ELSE:\r
    {\r
      Node* cond = NODE_ENCLOSURE_BODY(node);\r
      Node* Then = node->te.Then;\r
      Node* Else = node->te.Else;\r
\r
      len = compile_length_tree(cond, reg);\r
      if (len < 0) return len;\r
      len += SIZE_OP_PUSH;\r
      len += SIZE_OP_ATOMIC_START + SIZE_OP_ATOMIC_END;\r
\r
      if (IS_NOT_NULL(Then)) {\r
        tlen = compile_length_tree(Then, reg);\r
        if (tlen < 0) return tlen;\r
        len += tlen;\r
      }\r
\r
      if (IS_NOT_NULL(Else)) {\r
        len += SIZE_OP_JUMP;\r
        tlen = compile_length_tree(Else, reg);\r
        if (tlen < 0) return tlen;\r
        len += tlen;\r
      }\r
    }\r
    break;\r
\r
  default:\r
    return ONIGERR_TYPE_BUG;\r
    break;\r
  }\r
\r
  return len;\r
}\r
\r
static int get_char_length_tree(Node* node, regex_t* reg, int* len);\r
\r
static int\r
compile_enclosure_memory_node(EnclosureNode* node, regex_t* reg, ScanEnv* env)\r
{\r
  int r;\r
  int len;\r
\r
#ifdef USE_CALL\r
  if (node->m.regnum == 0 && NODE_IS_CALLED(node)) {\r
    r = add_opcode(reg, OP_CALL);\r
    if (r != 0) return r;\r
    node->m.called_addr = BB_GET_OFFSET_POS(reg) + SIZE_ABSADDR + SIZE_OP_JUMP;\r
    NODE_STATUS_ADD(node, ADDR_FIXED);\r
    r = add_abs_addr(reg, (int )node->m.called_addr);\r
    if (r != 0) return r;\r
    len = compile_length_tree(NODE_ENCLOSURE_BODY(node), reg);\r
    len += SIZE_OP_RETURN;\r
    r = add_opcode_rel_addr(reg, OP_JUMP, len);\r
    if (r != 0) return r;\r
\r
    r = compile_tree(NODE_ENCLOSURE_BODY(node), reg, env);\r
    if (r != 0) return r;\r
    r = add_opcode(reg, OP_RETURN);\r
    return r;\r
  }\r
\r
  if (NODE_IS_CALLED(node)) {\r
    r = add_opcode(reg, OP_CALL);\r
    if (r != 0) return r;\r
    node->m.called_addr = BB_GET_OFFSET_POS(reg) + SIZE_ABSADDR + SIZE_OP_JUMP;\r
    NODE_STATUS_ADD(node, ADDR_FIXED);\r
    r = add_abs_addr(reg, (int )node->m.called_addr);\r
    if (r != 0) return r;\r
    len = compile_length_tree(NODE_ENCLOSURE_BODY(node), reg);\r
    len += (SIZE_OP_MEMORY_START_PUSH + SIZE_OP_RETURN);\r
    if (MEM_STATUS_AT0(reg->bt_mem_end, node->m.regnum))\r
      len += (NODE_IS_RECURSION(node)\r
              ? SIZE_OP_MEMORY_END_PUSH_REC : SIZE_OP_MEMORY_END_PUSH);\r
    else\r
      len += (NODE_IS_RECURSION(node)\r
              ? SIZE_OP_MEMORY_END_REC : SIZE_OP_MEMORY_END);\r
\r
    r = add_opcode_rel_addr(reg, OP_JUMP, len);\r
    if (r != 0) return r;\r
  }\r
#endif\r
\r
  if (MEM_STATUS_AT0(reg->bt_mem_start, node->m.regnum))\r
    r = add_opcode(reg, OP_MEMORY_START_PUSH);\r
  else\r
    r = add_opcode(reg, OP_MEMORY_START);\r
  if (r != 0) return r;\r
  r = add_mem_num(reg, node->m.regnum);\r
  if (r != 0) return r;\r
  r = compile_tree(NODE_ENCLOSURE_BODY(node), reg, env);\r
  if (r != 0) return r;\r
\r
#ifdef USE_CALL\r
  if (MEM_STATUS_AT0(reg->bt_mem_end, node->m.regnum))\r
    r = add_opcode(reg, (NODE_IS_RECURSION(node)\r
                         ? OP_MEMORY_END_PUSH_REC : OP_MEMORY_END_PUSH));\r
  else\r
    r = add_opcode(reg, (NODE_IS_RECURSION(node)\r
                         ? OP_MEMORY_END_REC : OP_MEMORY_END));\r
  if (r != 0) return r;\r
  r = add_mem_num(reg, node->m.regnum);\r
  if (NODE_IS_CALLED(node)) {\r
    if (r != 0) return r;\r
    r = add_opcode(reg, OP_RETURN);\r
  }\r
#else\r
  if (MEM_STATUS_AT0(reg->bt_mem_end, node->m.regnum))\r
    r = add_opcode(reg, OP_MEMORY_END_PUSH);\r
  else\r
    r = add_opcode(reg, OP_MEMORY_END);\r
  if (r != 0) return r;\r
  r = add_mem_num(reg, node->m.regnum);\r
#endif\r
\r
  return r;\r
}\r
\r
static int\r
compile_enclosure_node(EnclosureNode* node, regex_t* reg, ScanEnv* env)\r
{\r
  int r, len;\r
\r
  switch (node->type) {\r
  case ENCLOSURE_MEMORY:\r
    r = compile_enclosure_memory_node(node, reg, env);\r
    break;\r
\r
  case ENCLOSURE_OPTION:\r
    r = compile_option_node(node, reg, env);\r
    break;\r
\r
  case ENCLOSURE_STOP_BACKTRACK:\r
    if (NODE_IS_STOP_BT_SIMPLE_REPEAT(node)) {\r
      QuantNode* qn = QUANT_(NODE_ENCLOSURE_BODY(node));\r
      r = compile_tree_n_times(NODE_QUANT_BODY(qn), qn->lower, reg, env);\r
      if (r != 0) return r;\r
\r
      len = compile_length_tree(NODE_QUANT_BODY(qn), reg);\r
      if (len < 0) return len;\r
\r
      r = add_opcode_rel_addr(reg, OP_PUSH, len + SIZE_OP_POP_OUT + SIZE_OP_JUMP);\r
      if (r != 0) return r;\r
      r = compile_tree(NODE_QUANT_BODY(qn), reg, env);\r
      if (r != 0) return r;\r
      r = add_opcode(reg, OP_POP_OUT);\r
      if (r != 0) return r;\r
      r = add_opcode_rel_addr(reg, OP_JUMP,\r
           -((int )SIZE_OP_PUSH + len + (int )SIZE_OP_POP_OUT + (int )SIZE_OP_JUMP));\r
    }\r
    else {\r
      r = add_opcode(reg, OP_ATOMIC_START);\r
      if (r != 0) return r;\r
      r = compile_tree(NODE_ENCLOSURE_BODY(node), reg, env);\r
      if (r != 0) return r;\r
      r = add_opcode(reg, OP_ATOMIC_END);\r
    }\r
    break;\r
\r
  case ENCLOSURE_IF_ELSE:\r
    {\r
      int cond_len, then_len, jump_len;\r
      Node* cond = NODE_ENCLOSURE_BODY(node);\r
      Node* Then = node->te.Then;\r
      Node* Else = node->te.Else;\r
\r
      r = add_opcode(reg, OP_ATOMIC_START);\r
      if (r != 0) return r;\r
\r
      cond_len = compile_length_tree(cond, reg);\r
      if (cond_len < 0) return cond_len;\r
      if (IS_NOT_NULL(Then)) {\r
        then_len = compile_length_tree(Then, reg);\r
        if (then_len < 0) return then_len;\r
      }\r
      else\r
        then_len = 0;\r
\r
      jump_len = cond_len + then_len + SIZE_OP_ATOMIC_END;\r
      if (IS_NOT_NULL(Else)) jump_len += SIZE_OP_JUMP;\r
\r
      r = add_opcode_rel_addr(reg, OP_PUSH, jump_len);\r
      if (r != 0) return r;\r
      r = compile_tree(cond, reg, env);\r
      if (r != 0) return r;\r
      r = add_opcode(reg, OP_ATOMIC_END);\r
      if (r != 0) return r;\r
\r
      if (IS_NOT_NULL(Then)) {\r
        r = compile_tree(Then, reg, env);\r
        if (r != 0) return r;\r
      }\r
\r
      if (IS_NOT_NULL(Else)) {\r
        int else_len = compile_length_tree(Else, reg);\r
        r = add_opcode_rel_addr(reg, OP_JUMP, else_len);\r
        if (r != 0) return r;\r
        r = compile_tree(Else, reg, env);\r
      }\r
    }\r
    break;\r
\r
  default:\r
    return ONIGERR_TYPE_BUG;\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
compile_length_anchor_node(AnchorNode* node, regex_t* reg)\r
{\r
  int len;\r
  int tlen = 0;\r
\r
  if (IS_NOT_NULL(NODE_ANCHOR_BODY(node))) {\r
    tlen = compile_length_tree(NODE_ANCHOR_BODY(node), reg);\r
    if (tlen < 0) return tlen;\r
  }\r
\r
  switch (node->type) {\r
  case ANCHOR_PREC_READ:\r
    len = SIZE_OP_PREC_READ_START + tlen + SIZE_OP_PREC_READ_END;\r
    break;\r
  case ANCHOR_PREC_READ_NOT:\r
    len = SIZE_OP_PREC_READ_NOT_START + tlen + SIZE_OP_PREC_READ_NOT_END;\r
    break;\r
  case ANCHOR_LOOK_BEHIND:\r
    len = SIZE_OP_LOOK_BEHIND + tlen;\r
    break;\r
  case ANCHOR_LOOK_BEHIND_NOT:\r
    len = SIZE_OP_LOOK_BEHIND_NOT_START + tlen + SIZE_OP_LOOK_BEHIND_NOT_END;\r
    break;\r
\r
  case ANCHOR_WORD_BOUNDARY:\r
  case ANCHOR_NO_WORD_BOUNDARY:\r
#ifdef USE_WORD_BEGIN_END\r
  case ANCHOR_WORD_BEGIN:\r
  case ANCHOR_WORD_END:\r
#endif\r
    len = SIZE_OP_WORD_BOUNDARY;\r
    break;\r
\r
  case ANCHOR_EXTENDED_GRAPHEME_CLUSTER_BOUNDARY:\r
  case ANCHOR_NO_EXTENDED_GRAPHEME_CLUSTER_BOUNDARY:\r
    len = SIZE_OPCODE;\r
    break;\r
\r
  default:\r
    len = SIZE_OPCODE;\r
    break;\r
  }\r
\r
  return len;\r
}\r
\r
static int\r
compile_anchor_node(AnchorNode* node, regex_t* reg, ScanEnv* env)\r
{\r
  int r, len;\r
  enum OpCode op;\r
\r
  switch (node->type) {\r
  case ANCHOR_BEGIN_BUF:      r = add_opcode(reg, OP_BEGIN_BUF);      break;\r
  case ANCHOR_END_BUF:        r = add_opcode(reg, OP_END_BUF);        break;\r
  case ANCHOR_BEGIN_LINE:     r = add_opcode(reg, OP_BEGIN_LINE);     break;\r
  case ANCHOR_END_LINE:       r = add_opcode(reg, OP_END_LINE);       break;\r
  case ANCHOR_SEMI_END_BUF:   r = add_opcode(reg, OP_SEMI_END_BUF);   break;\r
  case ANCHOR_BEGIN_POSITION: r = add_opcode(reg, OP_BEGIN_POSITION); break;\r
\r
  case ANCHOR_WORD_BOUNDARY:\r
    op = OP_WORD_BOUNDARY;\r
  word:\r
    r = add_opcode(reg, op);\r
    if (r != 0) return r;\r
    r = add_mode(reg, (ModeType )node->ascii_mode);\r
    break;\r
\r
  case ANCHOR_NO_WORD_BOUNDARY:\r
    op = OP_NO_WORD_BOUNDARY; goto word;\r
    break;\r
#ifdef USE_WORD_BEGIN_END\r
  case ANCHOR_WORD_BEGIN:\r
    op = OP_WORD_BEGIN; goto word;\r
    break;\r
  case ANCHOR_WORD_END:\r
    op = OP_WORD_END; goto word;\r
    break;\r
#endif\r
\r
  case ANCHOR_EXTENDED_GRAPHEME_CLUSTER_BOUNDARY:\r
    r = add_opcode(reg, OP_EXTENDED_GRAPHEME_CLUSTER_BOUNDARY);\r
    break;\r
\r
  case ANCHOR_NO_EXTENDED_GRAPHEME_CLUSTER_BOUNDARY:\r
    r = add_opcode(reg, OP_NO_EXTENDED_GRAPHEME_CLUSTER_BOUNDARY);\r
    break;\r
\r
  case ANCHOR_PREC_READ:\r
    r = add_opcode(reg, OP_PREC_READ_START);\r
    if (r != 0) return r;\r
    r = compile_tree(NODE_ANCHOR_BODY(node), reg, env);\r
    if (r != 0) return r;\r
    r = add_opcode(reg, OP_PREC_READ_END);\r
    break;\r
\r
  case ANCHOR_PREC_READ_NOT:\r
    len = compile_length_tree(NODE_ANCHOR_BODY(node), reg);\r
    if (len < 0) return len;\r
    r = add_opcode_rel_addr(reg, OP_PREC_READ_NOT_START, len + SIZE_OP_PREC_READ_NOT_END);\r
    if (r != 0) return r;\r
    r = compile_tree(NODE_ANCHOR_BODY(node), reg, env);\r
    if (r != 0) return r;\r
    r = add_opcode(reg, OP_PREC_READ_NOT_END);\r
    break;\r
\r
  case ANCHOR_LOOK_BEHIND:\r
    {\r
      int n;\r
      r = add_opcode(reg, OP_LOOK_BEHIND);\r
      if (r != 0) return r;\r
      if (node->char_len < 0) {\r
        r = get_char_length_tree(NODE_ANCHOR_BODY(node), reg, &n);\r
        if (r != 0) return ONIGERR_INVALID_LOOK_BEHIND_PATTERN;\r
      }\r
      else\r
        n = node->char_len;\r
\r
      r = add_length(reg, n);\r
      if (r != 0) return r;\r
      r = compile_tree(NODE_ANCHOR_BODY(node), reg, env);\r
    }\r
    break;\r
\r
  case ANCHOR_LOOK_BEHIND_NOT:\r
    {\r
      int n;\r
\r
      len = compile_length_tree(NODE_ANCHOR_BODY(node), reg);\r
      r = add_opcode_rel_addr(reg, OP_LOOK_BEHIND_NOT_START,\r
                              len + SIZE_OP_LOOK_BEHIND_NOT_END);\r
      if (r != 0) return r;\r
      if (node->char_len < 0) {\r
        r = get_char_length_tree(NODE_ANCHOR_BODY(node), reg, &n);\r
        if (r != 0) return ONIGERR_INVALID_LOOK_BEHIND_PATTERN;\r
      }\r
      else\r
        n = node->char_len;\r
      r = add_length(reg, n);\r
      if (r != 0) return r;\r
      r = compile_tree(NODE_ANCHOR_BODY(node), reg, env);\r
      if (r != 0) return r;\r
      r = add_opcode(reg, OP_LOOK_BEHIND_NOT_END);\r
    }\r
    break;\r
\r
  default:\r
    return ONIGERR_TYPE_BUG;\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
compile_gimmick_node(GimmickNode* node, regex_t* reg)\r
{\r
  int r;\r
\r
  switch (node->type) {\r
  case GIMMICK_FAIL:\r
    r = add_opcode(reg, OP_FAIL);\r
    break;\r
\r
  case GIMMICK_KEEP:\r
    r = add_opcode(reg, OP_PUSH_SAVE_VAL);\r
    if (r != 0) return r;\r
    r = add_save_type(reg, SAVE_KEEP);\r
    if (r != 0) return r;\r
    r = add_mem_num(reg, node->id);\r
    break;\r
\r
  case GIMMICK_SAVE:\r
    r = add_opcode(reg, OP_PUSH_SAVE_VAL);\r
    if (r != 0) return r;\r
    r = add_save_type(reg, node->detail_type);\r
    if (r != 0) return r;\r
    r = add_mem_num(reg, node->id);\r
    break;\r
\r
  case GIMMICK_UPDATE_VAR:\r
    r = add_opcode(reg, OP_UPDATE_VAR);\r
    if (r != 0) return r;\r
    r = add_update_var_type(reg, node->detail_type);\r
    if (r != 0) return r;\r
    r = add_mem_num(reg, node->id);\r
    break;\r
\r
#ifdef USE_CALLOUT\r
  case GIMMICK_CALLOUT:\r
    switch (node->detail_type) {\r
    case ONIG_CALLOUT_OF_CONTENTS:\r
    case ONIG_CALLOUT_OF_NAME:\r
      {\r
        r = add_opcode(reg, (node->detail_type == ONIG_CALLOUT_OF_CONTENTS) ?\r
                                  OP_CALLOUT_CONTENTS : OP_CALLOUT_NAME);\r
        if (r != 0) return r;\r
        if (node->detail_type == ONIG_CALLOUT_OF_NAME) {\r
          r = add_mem_num(reg, node->id);\r
          if (r != 0) return r;\r
        }\r
        r = add_mem_num(reg, node->num);\r
        if (r != 0) return r;\r
      }\r
      break;\r
\r
    default:\r
      r = ONIGERR_TYPE_BUG;\r
      break;\r
    }\r
#endif\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
compile_length_gimmick_node(GimmickNode* node, regex_t* reg)\r
{\r
  int len;\r
\r
  switch (node->type) {\r
  case GIMMICK_FAIL:\r
    len = SIZE_OP_FAIL;\r
    break;\r
\r
  case GIMMICK_KEEP:\r
  case GIMMICK_SAVE:\r
    len = SIZE_OP_PUSH_SAVE_VAL;\r
    break;\r
\r
  case GIMMICK_UPDATE_VAR:\r
    len = SIZE_OP_UPDATE_VAR;\r
    break;\r
\r
#ifdef USE_CALLOUT\r
  case GIMMICK_CALLOUT:\r
    switch (node->detail_type) {\r
    case ONIG_CALLOUT_OF_CONTENTS:\r
      len = SIZE_OP_CALLOUT_CONTENTS;\r
      break;\r
    case ONIG_CALLOUT_OF_NAME:\r
      len = SIZE_OP_CALLOUT_NAME;\r
      break;\r
\r
    default:\r
      len = ONIGERR_TYPE_BUG;\r
      break;\r
    }\r
    break;\r
#endif\r
  }\r
\r
  return len;\r
}\r
\r
static int\r
compile_length_tree(Node* node, regex_t* reg)\r
{\r
  int len, r;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
    len = 0;\r
    do {\r
      r = compile_length_tree(NODE_CAR(node), reg);\r
      if (r < 0) return r;\r
      len += r;\r
    } while (IS_NOT_NULL(node = NODE_CDR(node)));\r
    r = len;\r
    break;\r
\r
  case NODE_ALT:\r
    {\r
      int n;\r
\r
      n = r = 0;\r
      do {\r
        r += compile_length_tree(NODE_CAR(node), reg);\r
        n++;\r
      } while (IS_NOT_NULL(node = NODE_CDR(node)));\r
      r += (SIZE_OP_PUSH + SIZE_OP_JUMP) * (n - 1);\r
    }\r
    break;\r
\r
  case NODE_STRING:\r
    if (NODE_STRING_IS_RAW(node))\r
      r = compile_length_string_raw_node(STR_(node), reg);\r
    else\r
      r = compile_length_string_node(node, reg);\r
    break;\r
\r
  case NODE_CCLASS:\r
    r = compile_length_cclass_node(CCLASS_(node), reg);\r
    break;\r
\r
  case NODE_CTYPE:\r
    r = SIZE_OPCODE;\r
    break;\r
\r
  case NODE_BACKREF:\r
    {\r
      BackRefNode* br = BACKREF_(node);\r
\r
      if (NODE_IS_CHECKER(node)) {\r
#ifdef USE_BACKREF_WITH_LEVEL\r
        if (NODE_IS_NEST_LEVEL(node)) {\r
          r = SIZE_OPCODE + SIZE_LENGTH + SIZE_LENGTH + (SIZE_MEMNUM * br->back_num);\r
        }\r
        else\r
#endif\r
          r = SIZE_OPCODE + SIZE_LENGTH + (SIZE_MEMNUM * br->back_num);\r
      }\r
      else {\r
#ifdef USE_BACKREF_WITH_LEVEL\r
        if (NODE_IS_NEST_LEVEL(node)) {\r
          r = SIZE_OPCODE + SIZE_OPTION + SIZE_LENGTH +\r
            SIZE_LENGTH + (SIZE_MEMNUM * br->back_num);\r
        }\r
        else\r
#endif\r
        if (br->back_num == 1) {\r
          r = ((!IS_IGNORECASE(reg->options) && br->back_static[0] <= 2)\r
               ? SIZE_OPCODE : (SIZE_OPCODE + SIZE_MEMNUM));\r
        }\r
        else {\r
          r = SIZE_OPCODE + SIZE_LENGTH + (SIZE_MEMNUM * br->back_num);\r
        }\r
      }\r
    }\r
    break;\r
\r
#ifdef USE_CALL\r
  case NODE_CALL:\r
    r = SIZE_OP_CALL;\r
    break;\r
#endif\r
\r
  case NODE_QUANT:\r
    r = compile_length_quantifier_node(QUANT_(node), reg);\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    r = compile_length_enclosure_node(ENCLOSURE_(node), reg);\r
    break;\r
\r
  case NODE_ANCHOR:\r
    r = compile_length_anchor_node(ANCHOR_(node), reg);\r
    break;\r
\r
  case NODE_GIMMICK:\r
    r = compile_length_gimmick_node(GIMMICK_(node), reg);\r
    break;\r
\r
  default:\r
    return ONIGERR_TYPE_BUG;\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
compile_tree(Node* node, regex_t* reg, ScanEnv* env)\r
{\r
  int n, len, pos, r = 0;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
    do {\r
      r = compile_tree(NODE_CAR(node), reg, env);\r
    } while (r == 0 && IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_ALT:\r
    {\r
      Node* x = node;\r
      len = 0;\r
      do {\r
        len += compile_length_tree(NODE_CAR(x), reg);\r
        if (IS_NOT_NULL(NODE_CDR(x))) {\r
          len += SIZE_OP_PUSH + SIZE_OP_JUMP;\r
        }\r
      } while (IS_NOT_NULL(x = NODE_CDR(x)));\r
      pos = reg->used + len;  /* goal position */\r
\r
      do {\r
        len = compile_length_tree(NODE_CAR(node), reg);\r
        if (IS_NOT_NULL(NODE_CDR(node))) {\r
          enum OpCode push = NODE_IS_SUPER(node) ? OP_PUSH_SUPER : OP_PUSH;\r
          r = add_opcode_rel_addr(reg, push, len + SIZE_OP_JUMP);\r
          if (r != 0) break;\r
        }\r
        r = compile_tree(NODE_CAR(node), reg, env);\r
        if (r != 0) break;\r
        if (IS_NOT_NULL(NODE_CDR(node))) {\r
          len = pos - (reg->used + SIZE_OP_JUMP);\r
          r = add_opcode_rel_addr(reg, OP_JUMP, len);\r
          if (r != 0) break;\r
        }\r
      } while (IS_NOT_NULL(node = NODE_CDR(node)));\r
    }\r
    break;\r
\r
  case NODE_STRING:\r
    if (NODE_STRING_IS_RAW(node))\r
      r = compile_string_raw_node(STR_(node), reg);\r
    else\r
      r = compile_string_node(node, reg);\r
    break;\r
\r
  case NODE_CCLASS:\r
    r = compile_cclass_node(CCLASS_(node), reg);\r
    break;\r
\r
  case NODE_CTYPE:\r
    {\r
      int op;\r
\r
      switch (CTYPE_(node)->ctype) {\r
      case CTYPE_ANYCHAR:\r
        if (IS_MULTILINE(CTYPE_OPTION(node, reg)))\r
          r = add_opcode(reg, OP_ANYCHAR_ML);\r
        else\r
          r = add_opcode(reg, OP_ANYCHAR);\r
        break;\r
\r
      case ONIGENC_CTYPE_WORD:\r
        if (CTYPE_(node)->ascii_mode == 0) {\r
          op = CTYPE_(node)->not != 0 ? OP_NO_WORD : OP_WORD;\r
        }\r
        else {\r
          op = CTYPE_(node)->not != 0 ? OP_NO_WORD_ASCII : OP_WORD_ASCII;\r
        }\r
        r = add_opcode(reg, op);\r
        break;\r
\r
      default:\r
        return ONIGERR_TYPE_BUG;\r
        break;\r
      }\r
    }\r
    break;\r
\r
  case NODE_BACKREF:\r
    {\r
      BackRefNode* br = BACKREF_(node);\r
\r
      if (NODE_IS_CHECKER(node)) {\r
#ifdef USE_BACKREF_WITH_LEVEL\r
        if (NODE_IS_NEST_LEVEL(node)) {\r
          r = add_opcode(reg, OP_BACKREF_CHECK_WITH_LEVEL);\r
          if (r != 0) return r;\r
          r = add_length(reg, br->nest_level);\r
          if (r != 0) return r;\r
        }\r
        else\r
#endif\r
          {\r
            r = add_opcode(reg, OP_BACKREF_CHECK);\r
            if (r != 0) return r;\r
          }\r
\r
        goto add_bacref_mems;\r
      }\r
      else {\r
#ifdef USE_BACKREF_WITH_LEVEL\r
        if (NODE_IS_NEST_LEVEL(node)) {\r
          r = add_opcode(reg, OP_BACKREF_WITH_LEVEL);\r
          if (r != 0) return r;\r
          r = add_option(reg, (reg->options & ONIG_OPTION_IGNORECASE));\r
          if (r != 0) return r;\r
          r = add_length(reg, br->nest_level);\r
          if (r != 0) return r;\r
\r
          goto add_bacref_mems;\r
        }\r
        else\r
#endif\r
        if (br->back_num == 1) {\r
          n = br->back_static[0];\r
          if (IS_IGNORECASE(reg->options)) {\r
            r = add_opcode(reg, OP_BACKREF_N_IC);\r
            if (r != 0) return r;\r
            r = add_mem_num(reg, n);\r
          }\r
          else {\r
            switch (n) {\r
            case 1:  r = add_opcode(reg, OP_BACKREF1); break;\r
            case 2:  r = add_opcode(reg, OP_BACKREF2); break;\r
            default:\r
              r = add_opcode(reg, OP_BACKREF_N);\r
              if (r != 0) return r;\r
              r = add_mem_num(reg, n);\r
              break;\r
            }\r
          }\r
        }\r
        else {\r
          int i;\r
          int* p;\r
\r
          if (IS_IGNORECASE(reg->options)) {\r
            r = add_opcode(reg, OP_BACKREF_MULTI_IC);\r
          }\r
          else {\r
            r = add_opcode(reg, OP_BACKREF_MULTI);\r
          }\r
          if (r != 0) return r;\r
\r
        add_bacref_mems:\r
          r = add_length(reg, br->back_num);\r
          if (r != 0) return r;\r
          p = BACKREFS_P(br);\r
          for (i = br->back_num - 1; i >= 0; i--) {\r
            r = add_mem_num(reg, p[i]);\r
            if (r != 0) return r;\r
          }\r
        }\r
      }\r
    }\r
    break;\r
\r
#ifdef USE_CALL\r
  case NODE_CALL:\r
    r = compile_call(CALL_(node), reg, env);\r
    break;\r
#endif\r
\r
  case NODE_QUANT:\r
    r = compile_quantifier_node(QUANT_(node), reg, env);\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    r = compile_enclosure_node(ENCLOSURE_(node), reg, env);\r
    break;\r
\r
  case NODE_ANCHOR:\r
    r = compile_anchor_node(ANCHOR_(node), reg, env);\r
    break;\r
\r
  case NODE_GIMMICK:\r
    r = compile_gimmick_node(GIMMICK_(node), reg);\r
    break;\r
\r
  default:\r
#ifdef ONIG_DEBUG\r
    fprintf(stderr, "compile_tree: undefined node type %d\n", NODE_TYPE(node));\r
#endif\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
noname_disable_map(Node** plink, GroupNumRemap* map, int* counter)\r
{\r
  int r = 0;\r
  Node* node = *plink;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
  case NODE_ALT:\r
    do {\r
      r = noname_disable_map(&(NODE_CAR(node)), map, counter);\r
    } while (r == 0 && IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_QUANT:\r
    {\r
      Node** ptarget = &(NODE_BODY(node));\r
      Node*  old = *ptarget;\r
      r = noname_disable_map(ptarget, map, counter);\r
      if (*ptarget != old && NODE_TYPE(*ptarget) == NODE_QUANT) {\r
        onig_reduce_nested_quantifier(node, *ptarget);\r
      }\r
    }\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
      if (en->type == ENCLOSURE_MEMORY) {\r
        if (NODE_IS_NAMED_GROUP(node)) {\r
          (*counter)++;\r
          map[en->m.regnum].new_val = *counter;\r
          en->m.regnum = *counter;\r
          r = noname_disable_map(&(NODE_BODY(node)), map, counter);\r
        }\r
        else {\r
          *plink = NODE_BODY(node);\r
          NODE_BODY(node) = NULL_NODE;\r
          onig_node_free(node);\r
          r = noname_disable_map(plink, map, counter);\r
        }\r
      }\r
      else if (en->type == ENCLOSURE_IF_ELSE) {\r
        r = noname_disable_map(&(NODE_ENCLOSURE_BODY(en)), map, counter);\r
        if (r != 0) return r;\r
        if (IS_NOT_NULL(en->te.Then)) {\r
          r = noname_disable_map(&(en->te.Then), map, counter);\r
          if (r != 0) return r;\r
        }\r
        if (IS_NOT_NULL(en->te.Else)) {\r
          r = noname_disable_map(&(en->te.Else), map, counter);\r
          if (r != 0) return r;\r
        }\r
      }\r
      else\r
        r = noname_disable_map(&(NODE_BODY(node)), map, counter);\r
    }\r
    break;\r
\r
  case NODE_ANCHOR:\r
    if (IS_NOT_NULL(NODE_BODY(node)))\r
      r = noname_disable_map(&(NODE_BODY(node)), map, counter);\r
    break;\r
\r
  default:\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
renumber_node_backref(Node* node, GroupNumRemap* map)\r
{\r
  int i, pos, n, old_num;\r
  int *backs;\r
  BackRefNode* bn = BACKREF_(node);\r
\r
  if (! NODE_IS_BY_NAME(node))\r
    return ONIGERR_NUMBERED_BACKREF_OR_CALL_NOT_ALLOWED;\r
\r
  old_num = bn->back_num;\r
  if (IS_NULL(bn->back_dynamic))\r
    backs = bn->back_static;\r
  else\r
    backs = bn->back_dynamic;\r
\r
  for (i = 0, pos = 0; i < old_num; i++) {\r
    n = map[backs[i]].new_val;\r
    if (n > 0) {\r
      backs[pos] = n;\r
      pos++;\r
    }\r
  }\r
\r
  bn->back_num = pos;\r
  return 0;\r
}\r
\r
static int\r
renumber_by_map(Node* node, GroupNumRemap* map)\r
{\r
  int r = 0;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
  case NODE_ALT:\r
    do {\r
      r = renumber_by_map(NODE_CAR(node), map);\r
    } while (r == 0 && IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_QUANT:\r
    r = renumber_by_map(NODE_BODY(node), map);\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      r = renumber_by_map(NODE_BODY(node), map);\r
      if (r != 0) return r;\r
\r
      if (en->type == ENCLOSURE_IF_ELSE) {\r
        if (IS_NOT_NULL(en->te.Then)) {\r
          r = renumber_by_map(en->te.Then, map);\r
          if (r != 0) return r;\r
        }\r
        if (IS_NOT_NULL(en->te.Else)) {\r
          r = renumber_by_map(en->te.Else, map);\r
          if (r != 0) return r;\r
        }\r
      }\r
    }\r
    break;\r
\r
  case NODE_BACKREF:\r
    r = renumber_node_backref(node, map);\r
    break;\r
\r
  case NODE_ANCHOR:\r
    if (IS_NOT_NULL(NODE_BODY(node)))\r
      r = renumber_by_map(NODE_BODY(node), map);\r
    break;\r
\r
  default:\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
numbered_ref_check(Node* node)\r
{\r
  int r = 0;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
  case NODE_ALT:\r
    do {\r
      r = numbered_ref_check(NODE_CAR(node));\r
    } while (r == 0 && IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_ANCHOR:\r
    if (IS_NULL(NODE_BODY(node)))\r
      break;\r
    /* fall */\r
  case NODE_QUANT:\r
    r = numbered_ref_check(NODE_BODY(node));\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      r = numbered_ref_check(NODE_BODY(node));\r
      if (r != 0) return r;\r
\r
      if (en->type == ENCLOSURE_IF_ELSE) {\r
        if (IS_NOT_NULL(en->te.Then)) {\r
          r = numbered_ref_check(en->te.Then);\r
          if (r != 0) return r;\r
        }\r
        if (IS_NOT_NULL(en->te.Else)) {\r
          r = numbered_ref_check(en->te.Else);\r
          if (r != 0) return r;\r
        }\r
      }\r
    }\r
\r
    break;\r
\r
  case NODE_BACKREF:\r
    if (! NODE_IS_BY_NAME(node))\r
      return ONIGERR_NUMBERED_BACKREF_OR_CALL_NOT_ALLOWED;\r
    break;\r
\r
  default:\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
disable_noname_group_capture(Node** root, regex_t* reg, ScanEnv* env)\r
{\r
  int r, i, pos, counter;\r
  int result;\r
  MemStatusType loc;\r
  GroupNumRemap* map;\r
\r
  map = (GroupNumRemap* )xmalloc(sizeof(GroupNumRemap) * (env->num_mem + 1));\r
  CHECK_NULL_RETURN_MEMERR(map);\r
  for (i = 1; i <= env->num_mem; i++) {\r
    map[i].new_val = 0;\r
  }\r
  counter = 0;\r
  r = noname_disable_map(root, map, &counter);\r
  if (r != 0) return r;\r
\r
  r = renumber_by_map(*root, map);\r
  if (r != 0) return r;\r
\r
  for (i = 1, pos = 1; i <= env->num_mem; i++) {\r
    if (map[i].new_val > 0) {\r
      SCANENV_MEMENV(env)[pos] = SCANENV_MEMENV(env)[i];\r
      pos++;\r
    }\r
  }\r
\r
  loc = env->capture_history;\r
  MEM_STATUS_CLEAR(env->capture_history);\r
  for (i = 1; i <= ONIG_MAX_CAPTURE_HISTORY_GROUP; i++) {\r
    if (MEM_STATUS_AT(loc, i)) {\r
      MEM_STATUS_ON_SIMPLE(env->capture_history, map[i].new_val);\r
    }\r
  }\r
\r
  env->num_mem = env->num_named;\r
  reg->num_mem = env->num_named;\r
  result = onig_renumber_name_table(reg, map);\r
  xfree(map);\r
  return result;\r
}\r
\r
#ifdef USE_CALL\r
static int\r
fix_unset_addr_list(UnsetAddrList* uslist, regex_t* reg)\r
{\r
  int i, offset;\r
  EnclosureNode* en;\r
  AbsAddrType addr;\r
\r
  for (i = 0; i < uslist->num; i++) {\r
    if (! NODE_IS_ADDR_FIXED(uslist->us[i].target))\r
      return ONIGERR_PARSER_BUG;\r
\r
    en = ENCLOSURE_(uslist->us[i].target);\r
    addr   = en->m.called_addr;\r
    offset = uslist->us[i].offset;\r
\r
    BB_WRITE(reg, offset, &addr, SIZE_ABSADDR);\r
  }\r
  return 0;\r
}\r
#endif\r
\r
\r
#define GET_CHAR_LEN_VARLEN           -1\r
#define GET_CHAR_LEN_TOP_ALT_VARLEN   -2\r
\r
/* fixed size pattern node only */\r
static int\r
get_char_length_tree1(Node* node, regex_t* reg, int* len, int level)\r
{\r
  int tlen;\r
  int r = 0;\r
\r
  level++;\r
  *len = 0;\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
    do {\r
      r = get_char_length_tree1(NODE_CAR(node), reg, &tlen, level);\r
      if (r == 0)\r
        *len = distance_add(*len, tlen);\r
    } while (r == 0 && IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_ALT:\r
    {\r
      int tlen2;\r
      int varlen = 0;\r
\r
      r = get_char_length_tree1(NODE_CAR(node), reg, &tlen, level);\r
      while (r == 0 && IS_NOT_NULL(node = NODE_CDR(node))) {\r
        r = get_char_length_tree1(NODE_CAR(node), reg, &tlen2, level);\r
        if (r == 0) {\r
          if (tlen != tlen2)\r
            varlen = 1;\r
        }\r
      }\r
      if (r == 0) {\r
        if (varlen != 0) {\r
          if (level == 1)\r
            r = GET_CHAR_LEN_TOP_ALT_VARLEN;\r
          else\r
            r = GET_CHAR_LEN_VARLEN;\r
        }\r
        else\r
          *len = tlen;\r
      }\r
    }\r
    break;\r
\r
  case NODE_STRING:\r
    {\r
      StrNode* sn = STR_(node);\r
      UChar *s = sn->s;\r
\r
      while (s < sn->end) {\r
        s += enclen(reg->enc, s);\r
        (*len)++;\r
      }\r
    }\r
    break;\r
\r
  case NODE_QUANT:\r
    {\r
      QuantNode* qn = QUANT_(node);\r
\r
      if (qn->lower == qn->upper) {\r
        if (qn->upper == 0) {\r
          *len = 0;\r
        }\r
        else {\r
          r = get_char_length_tree1(NODE_BODY(node), reg, &tlen, level);\r
          if (r == 0)\r
            *len = distance_multiply(tlen, qn->lower);\r
        }\r
      }\r
      else\r
        r = GET_CHAR_LEN_VARLEN;\r
    }\r
    break;\r
\r
#ifdef USE_CALL\r
  case NODE_CALL:\r
    if (! NODE_IS_RECURSION(node))\r
      r = get_char_length_tree1(NODE_BODY(node), reg, len, level);\r
    else\r
      r = GET_CHAR_LEN_VARLEN;\r
    break;\r
#endif\r
\r
  case NODE_CTYPE:\r
  case NODE_CCLASS:\r
    *len = 1;\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      switch (en->type) {\r
      case ENCLOSURE_MEMORY:\r
#ifdef USE_CALL\r
        if (NODE_IS_CLEN_FIXED(node))\r
          *len = en->char_len;\r
        else {\r
          r = get_char_length_tree1(NODE_BODY(node), reg, len, level);\r
          if (r == 0) {\r
            en->char_len = *len;\r
            NODE_STATUS_ADD(node, CLEN_FIXED);\r
          }\r
        }\r
        break;\r
#endif\r
      case ENCLOSURE_OPTION:\r
      case ENCLOSURE_STOP_BACKTRACK:\r
        r = get_char_length_tree1(NODE_BODY(node), reg, len, level);\r
        break;\r
      case ENCLOSURE_IF_ELSE:\r
        {\r
          int clen, elen;\r
\r
          r = get_char_length_tree1(NODE_BODY(node), reg, &clen, level);\r
          if (r == 0) {\r
            if (IS_NOT_NULL(en->te.Then)) {\r
              r = get_char_length_tree1(en->te.Then, reg, &tlen, level);\r
              if (r != 0) break;\r
            }\r
            else tlen = 0;\r
            if (IS_NOT_NULL(en->te.Else)) {\r
              r = get_char_length_tree1(en->te.Else, reg, &elen, level);\r
              if (r != 0) break;\r
            }\r
            else elen = 0;\r
\r
            if (clen + tlen != elen) {\r
              r = GET_CHAR_LEN_VARLEN;\r
            }\r
            else {\r
              *len = elen;\r
            }\r
          }\r
        }\r
        break;\r
\r
      default:\r
        break;\r
      }\r
    }\r
    break;\r
\r
  case NODE_ANCHOR:\r
  case NODE_GIMMICK:\r
    break;\r
\r
  case NODE_BACKREF:\r
    if (NODE_IS_CHECKER(node))\r
      break;\r
    /* fall */\r
  default:\r
    r = GET_CHAR_LEN_VARLEN;\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
get_char_length_tree(Node* node, regex_t* reg, int* len)\r
{\r
  return get_char_length_tree1(node, reg, len, 0);\r
}\r
\r
/* x is not included y ==>  1 : 0 */\r
static int\r
is_exclusive(Node* x, Node* y, regex_t* reg)\r
{\r
  int i, len;\r
  OnigCodePoint code;\r
  UChar *p;\r
  NodeType ytype;\r
\r
 retry:\r
  ytype = NODE_TYPE(y);\r
  switch (NODE_TYPE(x)) {\r
  case NODE_CTYPE:\r
    {\r
      if (CTYPE_(x)->ctype == CTYPE_ANYCHAR ||\r
          CTYPE_(y)->ctype == CTYPE_ANYCHAR)\r
        break;\r
\r
      switch (ytype) {\r
      case NODE_CTYPE:\r
        if (CTYPE_(y)->ctype == CTYPE_(x)->ctype &&\r
            CTYPE_(y)->not   != CTYPE_(x)->not &&\r
            CTYPE_(y)->ascii_mode == CTYPE_(x)->ascii_mode)\r
          return 1;\r
        else\r
          return 0;\r
        break;\r
\r
      case NODE_CCLASS:\r
      swap:\r
        {\r
          Node* tmp;\r
          tmp = x; x = y; y = tmp;\r
          goto retry;\r
        }\r
        break;\r
\r
      case NODE_STRING:\r
        goto swap;\r
        break;\r
\r
      default:\r
        break;\r
      }\r
    }\r
    break;\r
\r
  case NODE_CCLASS:\r
    {\r
      int range;\r
      CClassNode* xc = CCLASS_(x);\r
\r
      switch (ytype) {\r
      case NODE_CTYPE:\r
        switch (CTYPE_(y)->ctype) {\r
        case CTYPE_ANYCHAR:\r
          return 0;\r
          break;\r
\r
        case ONIGENC_CTYPE_WORD:\r
          if (CTYPE_(y)->not == 0) {\r
            if (IS_NULL(xc->mbuf) && !IS_NCCLASS_NOT(xc)) {\r
              range = CTYPE_(y)->ascii_mode != 0 ? 128 : SINGLE_BYTE_SIZE;\r
              for (i = 0; i < range; i++) {\r
                if (BITSET_AT(xc->bs, i)) {\r
                  if (ONIGENC_IS_CODE_WORD(reg->enc, i)) return 0;\r
                }\r
              }\r
              return 1;\r
            }\r
            return 0;\r
          }\r
          else {\r
            if (IS_NOT_NULL(xc->mbuf)) return 0;\r
            if (IS_NCCLASS_NOT(xc)) return 0;\r
\r
            range = CTYPE_(y)->ascii_mode != 0 ? 128 : SINGLE_BYTE_SIZE;\r
            for (i = 0; i < range; i++) {\r
              if (! ONIGENC_IS_CODE_WORD(reg->enc, i)) {\r
                if (BITSET_AT(xc->bs, i))\r
                  return 0;\r
              }\r
            }\r
            for (i = range; i < SINGLE_BYTE_SIZE; i++) {\r
              if (BITSET_AT(xc->bs, i)) return 0;\r
            }\r
            return 1;\r
          }\r
          break;\r
\r
        default:\r
          break;\r
        }\r
        break;\r
\r
      case NODE_CCLASS:\r
        {\r
          int v;\r
          CClassNode* yc = CCLASS_(y);\r
\r
          for (i = 0; i < SINGLE_BYTE_SIZE; i++) {\r
            v = BITSET_AT(xc->bs, i);\r
            if ((v != 0 && !IS_NCCLASS_NOT(xc)) || (v == 0 && IS_NCCLASS_NOT(xc))) {\r
              v = BITSET_AT(yc->bs, i);\r
              if ((v != 0 && !IS_NCCLASS_NOT(yc)) ||\r
                  (v == 0 && IS_NCCLASS_NOT(yc)))\r
                return 0;\r
            }\r
          }\r
          if ((IS_NULL(xc->mbuf) && !IS_NCCLASS_NOT(xc)) ||\r
              (IS_NULL(yc->mbuf) && !IS_NCCLASS_NOT(yc)))\r
            return 1;\r
          return 0;\r
        }\r
        break;\r
\r
      case NODE_STRING:\r
        goto swap;\r
        break;\r
\r
      default:\r
        break;\r
      }\r
    }\r
    break;\r
\r
  case NODE_STRING:\r
    {\r
      StrNode* xs = STR_(x);\r
\r
      if (NODE_STRING_LEN(x) == 0)\r
        break;\r
\r
      switch (ytype) {\r
      case NODE_CTYPE:\r
        switch (CTYPE_(y)->ctype) {\r
        case CTYPE_ANYCHAR:\r
          break;\r
\r
        case ONIGENC_CTYPE_WORD:\r
          if (CTYPE_(y)->ascii_mode == 0) {\r
            if (ONIGENC_IS_MBC_WORD(reg->enc, xs->s, xs->end))\r
              return CTYPE_(y)->not;\r
            else\r
              return !(CTYPE_(y)->not);\r
          }\r
          else {\r
            if (ONIGENC_IS_MBC_WORD_ASCII(reg->enc, xs->s, xs->end))\r
              return CTYPE_(y)->not;\r
            else\r
              return !(CTYPE_(y)->not);\r
          }\r
          break;\r
        default:\r
          break;\r
        }\r
        break;\r
\r
      case NODE_CCLASS:\r
        {\r
          CClassNode* cc = CCLASS_(y);\r
\r
          code = ONIGENC_MBC_TO_CODE(reg->enc, xs->s,\r
                                     xs->s + ONIGENC_MBC_MAXLEN(reg->enc));\r
          return (onig_is_code_in_cc(reg->enc, code, cc) != 0 ? 0 : 1);\r
        }\r
        break;\r
\r
      case NODE_STRING:\r
        {\r
          UChar *q;\r
          StrNode* ys = STR_(y);\r
\r
          len = NODE_STRING_LEN(x);\r
          if (len > NODE_STRING_LEN(y)) len = NODE_STRING_LEN(y);\r
          if (NODE_STRING_IS_AMBIG(x) || NODE_STRING_IS_AMBIG(y)) {\r
            /* tiny version */\r
            return 0;\r
          }\r
          else {\r
            for (i = 0, p = ys->s, q = xs->s; i < len; i++, p++, q++) {\r
              if (*p != *q) return 1;\r
            }\r
          }\r
        }\r
        break;\r
\r
      default:\r
        break;\r
      }\r
    }\r
    break;\r
\r
  default:\r
    break;\r
  }\r
\r
  return 0;\r
}\r
\r
static Node*\r
get_head_value_node(Node* node, int exact, regex_t* reg)\r
{\r
  Node* n = NULL_NODE;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_BACKREF:\r
  case NODE_ALT:\r
#ifdef USE_CALL\r
  case NODE_CALL:\r
#endif\r
    break;\r
\r
  case NODE_CTYPE:\r
    if (CTYPE_(node)->ctype == CTYPE_ANYCHAR)\r
      break;\r
    /* fall */\r
  case NODE_CCLASS:\r
    if (exact == 0) {\r
      n = node;\r
    }\r
    break;\r
\r
  case NODE_LIST:\r
    n = get_head_value_node(NODE_CAR(node), exact, reg);\r
    break;\r
\r
  case NODE_STRING:\r
    {\r
      StrNode* sn = STR_(node);\r
\r
      if (sn->end <= sn->s)\r
        break;\r
\r
      if (exact != 0 &&\r
          !NODE_STRING_IS_RAW(node) && IS_IGNORECASE(reg->options)) {\r
      }\r
      else {\r
        n = node;\r
      }\r
    }\r
    break;\r
\r
  case NODE_QUANT:\r
    {\r
      QuantNode* qn = QUANT_(node);\r
      if (qn->lower > 0) {\r
        if (IS_NOT_NULL(qn->head_exact))\r
          n = qn->head_exact;\r
        else\r
          n = get_head_value_node(NODE_BODY(node), exact, reg);\r
      }\r
    }\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
      switch (en->type) {\r
      case ENCLOSURE_OPTION:\r
        {\r
          OnigOptionType options = reg->options;\r
\r
          reg->options = ENCLOSURE_(node)->o.options;\r
          n = get_head_value_node(NODE_BODY(node), exact, reg);\r
          reg->options = options;\r
        }\r
        break;\r
\r
      case ENCLOSURE_MEMORY:\r
      case ENCLOSURE_STOP_BACKTRACK:\r
      case ENCLOSURE_IF_ELSE:\r
        n = get_head_value_node(NODE_BODY(node), exact, reg);\r
        break;\r
      }\r
    }\r
    break;\r
\r
  case NODE_ANCHOR:\r
    if (ANCHOR_(node)->type == ANCHOR_PREC_READ)\r
      n = get_head_value_node(NODE_BODY(node), exact, reg);\r
    break;\r
\r
  case NODE_GIMMICK:\r
  default:\r
    break;\r
  }\r
\r
  return n;\r
}\r
\r
static int\r
check_type_tree(Node* node, int type_mask, int enclosure_mask, int anchor_mask)\r
{\r
  NodeType type;\r
  int r = 0;\r
\r
  type = NODE_TYPE(node);\r
  if ((NODE_TYPE2BIT(type) & type_mask) == 0)\r
    return 1;\r
\r
  switch (type) {\r
  case NODE_LIST:\r
  case NODE_ALT:\r
    do {\r
      r = check_type_tree(NODE_CAR(node), type_mask, enclosure_mask,\r
                          anchor_mask);\r
    } while (r == 0 && IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_QUANT:\r
    r = check_type_tree(NODE_BODY(node), type_mask, enclosure_mask, anchor_mask);\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
      if (((1<<en->type) & enclosure_mask) == 0)\r
        return 1;\r
\r
      r = check_type_tree(NODE_BODY(node), type_mask, enclosure_mask, anchor_mask);\r
      if (r == 0 && en->type == ENCLOSURE_IF_ELSE) {\r
        if (IS_NOT_NULL(en->te.Then)) {\r
          r = check_type_tree(en->te.Then, type_mask, enclosure_mask, anchor_mask);\r
          if (r != 0) break;\r
        }\r
        if (IS_NOT_NULL(en->te.Else)) {\r
          r = check_type_tree(en->te.Else, type_mask, enclosure_mask, anchor_mask);\r
        }\r
      }\r
    }\r
    break;\r
\r
  case NODE_ANCHOR:\r
    type = ANCHOR_(node)->type;\r
    if ((type & anchor_mask) == 0)\r
      return 1;\r
\r
    if (IS_NOT_NULL(NODE_BODY(node)))\r
      r = check_type_tree(NODE_BODY(node), type_mask, enclosure_mask, anchor_mask);\r
    break;\r
\r
  case NODE_GIMMICK:\r
  default:\r
    break;\r
  }\r
  return r;\r
}\r
\r
static OnigLen\r
tree_min_len(Node* node, ScanEnv* env)\r
{\r
  OnigLen len;\r
  OnigLen tmin;\r
\r
  len = 0;\r
  switch (NODE_TYPE(node)) {\r
  case NODE_BACKREF:\r
    if (! NODE_IS_CHECKER(node)) {\r
      int i;\r
      int* backs;\r
      MemEnv* mem_env = SCANENV_MEMENV(env);\r
      BackRefNode* br = BACKREF_(node);\r
      if (NODE_IS_RECURSION(node)) break;\r
\r
      backs = BACKREFS_P(br);\r
      len = tree_min_len(mem_env[backs[0]].node, env);\r
      for (i = 1; i < br->back_num; i++) {\r
        tmin = tree_min_len(mem_env[backs[i]].node, env);\r
        if (len > tmin) len = tmin;\r
      }\r
    }\r
    break;\r
\r
#ifdef USE_CALL\r
  case NODE_CALL:\r
    {\r
      Node* t = NODE_BODY(node);\r
      if (NODE_IS_RECURSION(node)) {\r
        if (NODE_IS_MIN_FIXED(t))\r
          len = ENCLOSURE_(t)->min_len;\r
      }\r
      else\r
        len = tree_min_len(t, env);\r
    }\r
    break;\r
#endif\r
\r
  case NODE_LIST:\r
    do {\r
      tmin = tree_min_len(NODE_CAR(node), env);\r
      len = distance_add(len, tmin);\r
    } while (IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_ALT:\r
    {\r
      Node *x, *y;\r
      y = node;\r
      do {\r
        x = NODE_CAR(y);\r
        tmin = tree_min_len(x, env);\r
        if (y == node) len = tmin;\r
        else if (len > tmin) len = tmin;\r
      } while (IS_NOT_NULL(y = NODE_CDR(y)));\r
    }\r
    break;\r
\r
  case NODE_STRING:\r
    {\r
      StrNode* sn = STR_(node);\r
      len = (int )(sn->end - sn->s);\r
    }\r
    break;\r
\r
  case NODE_CTYPE:\r
  case NODE_CCLASS:\r
    len = ONIGENC_MBC_MINLEN(env->enc);\r
    break;\r
\r
  case NODE_QUANT:\r
    {\r
      QuantNode* qn = QUANT_(node);\r
\r
      if (qn->lower > 0) {\r
        len = tree_min_len(NODE_BODY(node), env);\r
        len = distance_multiply(len, qn->lower);\r
      }\r
    }\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
      switch (en->type) {\r
      case ENCLOSURE_MEMORY:\r
        if (NODE_IS_MIN_FIXED(node))\r
          len = en->min_len;\r
        else {\r
          if (NODE_IS_MARK1(node))\r
            len = 0;  /* recursive */\r
          else {\r
            NODE_STATUS_ADD(node, MARK1);\r
            len = tree_min_len(NODE_BODY(node), env);\r
            NODE_STATUS_REMOVE(node, MARK1);\r
\r
            en->min_len = len;\r
            NODE_STATUS_ADD(node, MIN_FIXED);\r
          }\r
        }\r
        break;\r
\r
      case ENCLOSURE_OPTION:\r
      case ENCLOSURE_STOP_BACKTRACK:\r
        len = tree_min_len(NODE_BODY(node), env);\r
        break;\r
      case ENCLOSURE_IF_ELSE:\r
        {\r
          OnigLen elen;\r
\r
          len = tree_min_len(NODE_BODY(node), env);\r
          if (IS_NOT_NULL(en->te.Then))\r
            len += tree_min_len(en->te.Then, env);\r
          if (IS_NOT_NULL(en->te.Else))\r
            elen = tree_min_len(en->te.Else, env);\r
          else elen = 0;\r
\r
          if (elen < len) len = elen;\r
        }\r
        break;\r
      }\r
    }\r
    break;\r
\r
  case NODE_GIMMICK:\r
    {\r
      GimmickNode* g = GIMMICK_(node);\r
      if (g->type == GIMMICK_FAIL) {\r
        len = INFINITE_LEN;\r
        break;\r
      }\r
    }\r
    /* fall */\r
  case NODE_ANCHOR:\r
  default:\r
    break;\r
  }\r
\r
  return len;\r
}\r
\r
static OnigLen\r
tree_max_len(Node* node, ScanEnv* env)\r
{\r
  OnigLen len;\r
  OnigLen tmax;\r
\r
  len = 0;\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
    do {\r
      tmax = tree_max_len(NODE_CAR(node), env);\r
      len = distance_add(len, tmax);\r
    } while (IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_ALT:\r
    do {\r
      tmax = tree_max_len(NODE_CAR(node), env);\r
      if (len < tmax) len = tmax;\r
    } while (IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_STRING:\r
    {\r
      StrNode* sn = STR_(node);\r
      len = (OnigLen )(sn->end - sn->s);\r
    }\r
    break;\r
\r
  case NODE_CTYPE:\r
  case NODE_CCLASS:\r
    len = ONIGENC_MBC_MAXLEN_DIST(env->enc);\r
    break;\r
\r
  case NODE_BACKREF:\r
    if (! NODE_IS_CHECKER(node)) {\r
      int i;\r
      int* backs;\r
      MemEnv* mem_env = SCANENV_MEMENV(env);\r
      BackRefNode* br = BACKREF_(node);\r
      if (NODE_IS_RECURSION(node)) {\r
        len = INFINITE_LEN;\r
        break;\r
      }\r
      backs = BACKREFS_P(br);\r
      for (i = 0; i < br->back_num; i++) {\r
        tmax = tree_max_len(mem_env[backs[i]].node, env);\r
        if (len < tmax) len = tmax;\r
      }\r
    }\r
    break;\r
\r
#ifdef USE_CALL\r
  case NODE_CALL:\r
    if (! NODE_IS_RECURSION(node))\r
      len = tree_max_len(NODE_BODY(node), env);\r
    else\r
      len = INFINITE_LEN;\r
    break;\r
#endif\r
\r
  case NODE_QUANT:\r
    {\r
      QuantNode* qn = QUANT_(node);\r
\r
      if (qn->upper != 0) {\r
        len = tree_max_len(NODE_BODY(node), env);\r
        if (len != 0) {\r
          if (! IS_REPEAT_INFINITE(qn->upper))\r
            len = distance_multiply(len, qn->upper);\r
          else\r
            len = INFINITE_LEN;\r
        }\r
      }\r
    }\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
      switch (en->type) {\r
      case ENCLOSURE_MEMORY:\r
        if (NODE_IS_MAX_FIXED(node))\r
          len = en->max_len;\r
        else {\r
          if (NODE_IS_MARK1(node))\r
            len = INFINITE_LEN;\r
          else {\r
            NODE_STATUS_ADD(node, MARK1);\r
            len = tree_max_len(NODE_BODY(node), env);\r
            NODE_STATUS_REMOVE(node, MARK1);\r
\r
            en->max_len = len;\r
            NODE_STATUS_ADD(node, MAX_FIXED);\r
          }\r
        }\r
        break;\r
\r
      case ENCLOSURE_OPTION:\r
      case ENCLOSURE_STOP_BACKTRACK:\r
        len = tree_max_len(NODE_BODY(node), env);\r
        break;\r
      case ENCLOSURE_IF_ELSE:\r
        {\r
          OnigLen tlen, elen;\r
\r
          len = tree_max_len(NODE_BODY(node), env);\r
          if (IS_NOT_NULL(en->te.Then)) {\r
            tlen = tree_max_len(en->te.Then, env);\r
            len = distance_add(len, tlen);\r
          }\r
          if (IS_NOT_NULL(en->te.Else))\r
            elen = tree_max_len(en->te.Else, env);\r
          else elen = 0;\r
\r
          if (elen > len) len = elen;\r
        }\r
        break;\r
      }\r
    }\r
    break;\r
\r
  case NODE_ANCHOR:\r
  case NODE_GIMMICK:\r
  default:\r
    break;\r
  }\r
\r
  return len;\r
}\r
\r
static int\r
check_backrefs(Node* node, ScanEnv* env)\r
{\r
  int r;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
  case NODE_ALT:\r
    do {\r
      r = check_backrefs(NODE_CAR(node), env);\r
    } while (r == 0 && IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_ANCHOR:\r
    if (! ANCHOR_HAS_BODY(ANCHOR_(node))) {\r
      r = 0;\r
      break;\r
    }\r
    /* fall */\r
  case NODE_QUANT:\r
    r = check_backrefs(NODE_BODY(node), env);\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    r = check_backrefs(NODE_BODY(node), env);\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      if (en->type == ENCLOSURE_IF_ELSE) {\r
        if (r != 0) return r;\r
        if (IS_NOT_NULL(en->te.Then)) {\r
          r = check_backrefs(en->te.Then, env);\r
          if (r != 0) return r;\r
        }\r
        if (IS_NOT_NULL(en->te.Else)) {\r
          r = check_backrefs(en->te.Else, env);\r
        }\r
      }\r
    }\r
    break;\r
\r
  case NODE_BACKREF:\r
    {\r
      int i;\r
      BackRefNode* br = BACKREF_(node);\r
      int* backs = BACKREFS_P(br);\r
      MemEnv* mem_env = SCANENV_MEMENV(env);\r
\r
      for (i = 0; i < br->back_num; i++) {\r
        if (backs[i] > env->num_mem)\r
          return ONIGERR_INVALID_BACKREF;\r
\r
        NODE_STATUS_ADD(mem_env[backs[i]].node, BACKREF);\r
      }\r
      r = 0;\r
    }\r
    break;\r
\r
  default:\r
    r = 0;\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
\r
#ifdef USE_CALL\r
\r
#define RECURSION_EXIST        (1<<0)\r
#define RECURSION_MUST         (1<<1)\r
#define RECURSION_INFINITE     (1<<2)\r
\r
static int\r
infinite_recursive_call_check(Node* node, ScanEnv* env, int head)\r
{\r
  int ret;\r
  int r = 0;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
    {\r
      Node *x;\r
      OnigLen min;\r
\r
      x = node;\r
      do {\r
        ret = infinite_recursive_call_check(NODE_CAR(x), env, head);\r
        if (ret < 0 || (ret & RECURSION_INFINITE) != 0) return ret;\r
        r |= ret;\r
        if (head != 0) {\r
          min = tree_min_len(NODE_CAR(x), env);\r
          if (min != 0) head = 0;\r
        }\r
      } while (IS_NOT_NULL(x = NODE_CDR(x)));\r
    }\r
    break;\r
\r
  case NODE_ALT:\r
    {\r
      int must;\r
\r
      must = RECURSION_MUST;\r
      do {\r
        ret = infinite_recursive_call_check(NODE_CAR(node), env, head);\r
        if (ret < 0 || (ret & RECURSION_INFINITE) != 0) return ret;\r
\r
        r    |= (ret & RECURSION_EXIST);\r
        must &= ret;\r
      } while (IS_NOT_NULL(node = NODE_CDR(node)));\r
      r |= must;\r
    }\r
    break;\r
\r
  case NODE_QUANT:\r
    r = infinite_recursive_call_check(NODE_BODY(node), env, head);\r
    if (r < 0) return r;\r
    if ((r & RECURSION_MUST) != 0) {\r
      if (QUANT_(node)->lower == 0)\r
        r &= ~RECURSION_MUST;\r
    }\r
    break;\r
\r
  case NODE_ANCHOR:\r
    if (! ANCHOR_HAS_BODY(ANCHOR_(node)))\r
      break;\r
    /* fall */\r
  case NODE_CALL:\r
    r = infinite_recursive_call_check(NODE_BODY(node), env, head);\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      if (en->type == ENCLOSURE_MEMORY) {\r
        if (NODE_IS_MARK2(node))\r
          return 0;\r
        else if (NODE_IS_MARK1(node))\r
          return (head == 0 ? RECURSION_EXIST | RECURSION_MUST\r
                  : RECURSION_EXIST | RECURSION_MUST | RECURSION_INFINITE);\r
        else {\r
          NODE_STATUS_ADD(node, MARK2);\r
          r = infinite_recursive_call_check(NODE_BODY(node), env, head);\r
          NODE_STATUS_REMOVE(node, MARK2);\r
        }\r
      }\r
      else if (en->type == ENCLOSURE_IF_ELSE) {\r
        int eret;\r
\r
        ret = infinite_recursive_call_check(NODE_BODY(node), env, head);\r
        if (ret < 0 || (ret & RECURSION_INFINITE) != 0) return ret;\r
        r |= ret;\r
        if (IS_NOT_NULL(en->te.Then)) {\r
          OnigLen min;\r
          if (head != 0) {\r
            min = tree_min_len(NODE_BODY(node), env);\r
          }\r
          else min = 0;\r
\r
          ret = infinite_recursive_call_check(en->te.Then, env, min != 0 ? 0:head);\r
          if (ret < 0 || (ret & RECURSION_INFINITE) != 0) return ret;\r
          r |= ret;\r
        }\r
        if (IS_NOT_NULL(en->te.Else)) {\r
          eret = infinite_recursive_call_check(en->te.Else, env, head);\r
          if (eret < 0 || (eret & RECURSION_INFINITE) != 0) return eret;\r
          r |= (eret & RECURSION_EXIST);\r
          if ((eret & RECURSION_MUST) == 0)\r
            r &= ~RECURSION_MUST;\r
        }\r
      }\r
      else {\r
        r = infinite_recursive_call_check(NODE_BODY(node), env, head);\r
      }\r
    }\r
    break;\r
\r
  default:\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
infinite_recursive_call_check_trav(Node* node, ScanEnv* env)\r
{\r
  int r;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
  case NODE_ALT:\r
    do {\r
      r = infinite_recursive_call_check_trav(NODE_CAR(node), env);\r
    } while (r == 0 && IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_ANCHOR:\r
    if (! ANCHOR_HAS_BODY(ANCHOR_(node))) {\r
      r = 0;\r
      break;\r
    }\r
    /* fall */\r
  case NODE_QUANT:\r
    r = infinite_recursive_call_check_trav(NODE_BODY(node), env);\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      if (en->type == ENCLOSURE_MEMORY) {\r
        if (NODE_IS_RECURSION(node) && NODE_IS_CALLED(node)) {\r
          int ret;\r
\r
          NODE_STATUS_ADD(node, MARK1);\r
\r
          ret = infinite_recursive_call_check(NODE_BODY(node), env, 1);\r
          if (ret < 0) return ret;\r
          else if ((ret & (RECURSION_MUST | RECURSION_INFINITE)) != 0)\r
            return ONIGERR_NEVER_ENDING_RECURSION;\r
\r
          NODE_STATUS_REMOVE(node, MARK1);\r
        }\r
      }\r
      else if (en->type == ENCLOSURE_IF_ELSE) {\r
        if (IS_NOT_NULL(en->te.Then)) {\r
          r = infinite_recursive_call_check_trav(en->te.Then, env);\r
          if (r != 0) return r;\r
        }\r
        if (IS_NOT_NULL(en->te.Else)) {\r
          r = infinite_recursive_call_check_trav(en->te.Else, env);\r
          if (r != 0) return r;\r
        }\r
      }\r
    }\r
\r
    r = infinite_recursive_call_check_trav(NODE_BODY(node), env);\r
    break;\r
\r
  default:\r
    r = 0;\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
recursive_call_check(Node* node)\r
{\r
  int r;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
  case NODE_ALT:\r
    r = 0;\r
    do {\r
      r |= recursive_call_check(NODE_CAR(node));\r
    } while (IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_ANCHOR:\r
    if (! ANCHOR_HAS_BODY(ANCHOR_(node))) {\r
      r = 0;\r
      break;\r
    }\r
    /* fall */\r
  case NODE_QUANT:\r
    r = recursive_call_check(NODE_BODY(node));\r
    break;\r
\r
  case NODE_CALL:\r
    r = recursive_call_check(NODE_BODY(node));\r
    if (r != 0) {\r
      if (NODE_IS_MARK1(NODE_BODY(node)))\r
        NODE_STATUS_ADD(node, RECURSION);\r
    }\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      if (en->type == ENCLOSURE_MEMORY) {\r
        if (NODE_IS_MARK2(node))\r
          return 0;\r
        else if (NODE_IS_MARK1(node))\r
          return 1; /* recursion */\r
        else {\r
          NODE_STATUS_ADD(node, MARK2);\r
          r = recursive_call_check(NODE_BODY(node));\r
          NODE_STATUS_REMOVE(node, MARK2);\r
        }\r
      }\r
      else if (en->type == ENCLOSURE_IF_ELSE) {\r
        r = 0;\r
        if (IS_NOT_NULL(en->te.Then)) {\r
          r |= recursive_call_check(en->te.Then);\r
        }\r
        if (IS_NOT_NULL(en->te.Else)) {\r
          r |= recursive_call_check(en->te.Else);\r
        }\r
        r |= recursive_call_check(NODE_BODY(node));\r
      }\r
      else {\r
        r = recursive_call_check(NODE_BODY(node));\r
      }\r
    }\r
    break;\r
\r
  default:\r
    r = 0;\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
#define IN_RECURSION         (1<<0)\r
#define FOUND_CALLED_NODE    1\r
\r
static int\r
recursive_call_check_trav(Node* node, ScanEnv* env, int state)\r
{\r
  int r = 0;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
  case NODE_ALT:\r
    {\r
      int ret;\r
      do {\r
        ret = recursive_call_check_trav(NODE_CAR(node), env, state);\r
        if (ret == FOUND_CALLED_NODE) r = FOUND_CALLED_NODE;\r
        else if (ret < 0) return ret;\r
      } while (IS_NOT_NULL(node = NODE_CDR(node)));\r
    }\r
    break;\r
\r
  case NODE_QUANT:\r
    r = recursive_call_check_trav(NODE_BODY(node), env, state);\r
    if (QUANT_(node)->upper == 0) {\r
      if (r == FOUND_CALLED_NODE)\r
        QUANT_(node)->is_refered = 1;\r
    }\r
    break;\r
\r
  case NODE_ANCHOR:\r
    {\r
      AnchorNode* an = ANCHOR_(node);\r
      if (ANCHOR_HAS_BODY(an))\r
        r = recursive_call_check_trav(NODE_ANCHOR_BODY(an), env, state);\r
    }\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      int ret;\r
      int state1;\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      if (en->type == ENCLOSURE_MEMORY) {\r
        if (NODE_IS_CALLED(node) || (state & IN_RECURSION) != 0) {\r
          if (! NODE_IS_RECURSION(node)) {\r
            NODE_STATUS_ADD(node, MARK1);\r
            r = recursive_call_check(NODE_BODY(node));\r
            if (r != 0)\r
              NODE_STATUS_ADD(node, RECURSION);\r
            NODE_STATUS_REMOVE(node, MARK1);\r
          }\r
\r
          if (NODE_IS_CALLED(node))\r
            r = FOUND_CALLED_NODE;\r
        }\r
      }\r
\r
      state1 = state;\r
      if (NODE_IS_RECURSION(node))\r
        state1 |= IN_RECURSION;\r
\r
      ret = recursive_call_check_trav(NODE_BODY(node), env, state1);\r
      if (ret == FOUND_CALLED_NODE)\r
        r = FOUND_CALLED_NODE;\r
\r
      if (en->type == ENCLOSURE_IF_ELSE) {\r
        if (IS_NOT_NULL(en->te.Then)) {\r
          ret = recursive_call_check_trav(en->te.Then, env, state1);\r
          if (ret == FOUND_CALLED_NODE)\r
            r = FOUND_CALLED_NODE;\r
        }\r
        if (IS_NOT_NULL(en->te.Else)) {\r
          ret = recursive_call_check_trav(en->te.Else, env, state1);\r
          if (ret == FOUND_CALLED_NODE)\r
            r = FOUND_CALLED_NODE;\r
        }\r
      }\r
    }\r
    break;\r
\r
  default:\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
#endif\r
\r
/* divide different length alternatives in look-behind.\r
  (?<=A|B) ==> (?<=A)|(?<=B)\r
  (?<!A|B) ==> (?<!A)(?<!B)\r
*/\r
static int\r
divide_look_behind_alternatives(Node* node)\r
{\r
  Node *head, *np, *insert_node;\r
  AnchorNode* an = ANCHOR_(node);\r
  int anc_type = an->type;\r
\r
  head = NODE_ANCHOR_BODY(an);\r
  np = NODE_CAR(head);\r
  swap_node(node, head);\r
  NODE_CAR(node) = head;\r
  NODE_BODY(head) = np;\r
\r
  np = node;\r
  while (IS_NOT_NULL(np = NODE_CDR(np))) {\r
    insert_node = onig_node_new_anchor(anc_type, an->ascii_mode);\r
    CHECK_NULL_RETURN_MEMERR(insert_node);\r
    NODE_BODY(insert_node) = NODE_CAR(np);\r
    NODE_CAR(np) = insert_node;\r
  }\r
\r
  if (anc_type == ANCHOR_LOOK_BEHIND_NOT) {\r
    np = node;\r
    do {\r
      NODE_SET_TYPE(np, NODE_LIST);  /* alt -> list */\r
    } while (IS_NOT_NULL(np = NODE_CDR(np)));\r
  }\r
  return 0;\r
}\r
\r
static int\r
setup_look_behind(Node* node, regex_t* reg, ScanEnv* env)\r
{\r
  int r, len;\r
  AnchorNode* an = ANCHOR_(node);\r
\r
  r = get_char_length_tree(NODE_ANCHOR_BODY(an), reg, &len);\r
  if (r == 0)\r
    an->char_len = len;\r
  else if (r == GET_CHAR_LEN_VARLEN)\r
    r = ONIGERR_INVALID_LOOK_BEHIND_PATTERN;\r
  else if (r == GET_CHAR_LEN_TOP_ALT_VARLEN) {\r
    if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_DIFFERENT_LEN_ALT_LOOK_BEHIND))\r
      r = divide_look_behind_alternatives(node);\r
    else\r
      r = ONIGERR_INVALID_LOOK_BEHIND_PATTERN;\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
next_setup(Node* node, Node* next_node, regex_t* reg)\r
{\r
  NodeType type;\r
\r
 retry:\r
  type = NODE_TYPE(node);\r
  if (type == NODE_QUANT) {\r
    QuantNode* qn = QUANT_(node);\r
    if (qn->greedy && IS_REPEAT_INFINITE(qn->upper)) {\r
#ifdef USE_QUANT_PEEK_NEXT\r
      Node* n = get_head_value_node(next_node, 1, reg);\r
      /* '\0': for UTF-16BE etc... */\r
      if (IS_NOT_NULL(n) && STR_(n)->s[0] != '\0') {\r
        qn->next_head_exact = n;\r
      }\r
#endif\r
      /* automatic posseivation a*b ==> (?>a*)b */\r
      if (qn->lower <= 1) {\r
        if (NODE_IS_SIMPLE_TYPE(NODE_BODY(node))) {\r
          Node *x, *y;\r
          x = get_head_value_node(NODE_BODY(node), 0, reg);\r
          if (IS_NOT_NULL(x)) {\r
            y = get_head_value_node(next_node,  0, reg);\r
            if (IS_NOT_NULL(y) && is_exclusive(x, y, reg)) {\r
              Node* en = onig_node_new_enclosure(ENCLOSURE_STOP_BACKTRACK);\r
              CHECK_NULL_RETURN_MEMERR(en);\r
              NODE_STATUS_ADD(en, STOP_BT_SIMPLE_REPEAT);\r
              swap_node(node, en);\r
              NODE_BODY(node) = en;\r
            }\r
          }\r
        }\r
      }\r
    }\r
  }\r
  else if (type == NODE_ENCLOSURE) {\r
    EnclosureNode* en = ENCLOSURE_(node);\r
    if (en->type == ENCLOSURE_MEMORY) {\r
      node = NODE_BODY(node);\r
      goto retry;\r
    }\r
  }\r
  return 0;\r
}\r
\r
\r
static int\r
update_string_node_case_fold(regex_t* reg, Node *node)\r
{\r
  UChar *p, *end, buf[ONIGENC_MBC_CASE_FOLD_MAXLEN];\r
  UChar *sbuf, *ebuf, *sp;\r
  int r, i, len, sbuf_size;\r
  StrNode* sn = STR_(node);\r
\r
  end = sn->end;\r
  sbuf_size = (int )(end - sn->s) * 2;\r
  sbuf = (UChar* )xmalloc(sbuf_size);\r
  CHECK_NULL_RETURN_MEMERR(sbuf);\r
  ebuf = sbuf + sbuf_size;\r
\r
  sp = sbuf;\r
  p = sn->s;\r
  while (p < end) {\r
    len = ONIGENC_MBC_CASE_FOLD(reg->enc, reg->case_fold_flag, &p, end, buf);\r
    for (i = 0; i < len; i++) {\r
      if (sp >= ebuf) {\r
        sbuf = (UChar* )xrealloc(sbuf, sbuf_size * 2, sbuf_size);\r
        CHECK_NULL_RETURN_MEMERR(sbuf);\r
        sp = sbuf + sbuf_size;\r
        sbuf_size *= 2;\r
        ebuf = sbuf + sbuf_size;\r
      }\r
\r
      *sp++ = buf[i];\r
    }\r
  }\r
\r
  r = onig_node_str_set(node, sbuf, sp);\r
  if (r != 0) {\r
    xfree(sbuf);\r
    return r;\r
  }\r
\r
  xfree(sbuf);\r
  return 0;\r
}\r
\r
static int\r
expand_case_fold_make_rem_string(Node** rnode, UChar *s, UChar *end, regex_t* reg)\r
{\r
  int r;\r
  Node *node;\r
\r
  node = onig_node_new_str(s, end);\r
  if (IS_NULL(node)) return ONIGERR_MEMORY;\r
\r
  r = update_string_node_case_fold(reg, node);\r
  if (r != 0) {\r
    onig_node_free(node);\r
    return r;\r
  }\r
\r
  NODE_STRING_SET_AMBIG(node);\r
  NODE_STRING_SET_DONT_GET_OPT_INFO(node);\r
  *rnode = node;\r
  return 0;\r
}\r
\r
static int\r
expand_case_fold_string_alt(int item_num, OnigCaseFoldCodeItem items[], UChar *p,\r
                            int slen, UChar *end, regex_t* reg, Node **rnode)\r
{\r
  int r, i, j;\r
  int len;\r
  int varlen;\r
  Node *anode, *var_anode, *snode, *xnode, *an;\r
  UChar buf[ONIGENC_CODE_TO_MBC_MAXLEN];\r
\r
  *rnode = var_anode = NULL_NODE;\r
\r
  varlen = 0;\r
  for (i = 0; i < item_num; i++) {\r
    if (items[i].byte_len != slen) {\r
      varlen = 1;\r
      break;\r
    }\r
  }\r
\r
  if (varlen != 0) {\r
    *rnode = var_anode = onig_node_new_alt(NULL_NODE, NULL_NODE);\r
    if (IS_NULL(var_anode)) return ONIGERR_MEMORY;\r
\r
    xnode = onig_node_new_list(NULL, NULL);\r
    if (IS_NULL(xnode)) goto mem_err;\r
    NODE_CAR(var_anode) = xnode;\r
\r
    anode = onig_node_new_alt(NULL_NODE, NULL_NODE);\r
    if (IS_NULL(anode)) goto mem_err;\r
    NODE_CAR(xnode) = anode;\r
  }\r
  else {\r
    *rnode = anode = onig_node_new_alt(NULL_NODE, NULL_NODE);\r
    if (IS_NULL(anode)) return ONIGERR_MEMORY;\r
  }\r
\r
  snode = onig_node_new_str(p, p + slen);\r
  if (IS_NULL(snode)) goto mem_err;\r
\r
  NODE_CAR(anode) = snode;\r
\r
  for (i = 0; i < item_num; i++) {\r
    snode = onig_node_new_str(NULL, NULL);\r
    if (IS_NULL(snode)) goto mem_err;\r
    \r
    for (j = 0; j < items[i].code_len; j++) {\r
      len = ONIGENC_CODE_TO_MBC(reg->enc, items[i].code[j], buf);\r
      if (len < 0) {\r
        r = len;\r
        goto mem_err2;\r
      }\r
\r
      r = onig_node_str_cat(snode, buf, buf + len);\r
      if (r != 0) goto mem_err2;\r
    }\r
\r
    an = onig_node_new_alt(NULL_NODE, NULL_NODE);\r
    if (IS_NULL(an)) {\r
      goto mem_err2;\r
    }\r
\r
    if (items[i].byte_len != slen) {\r
      Node *rem;\r
      UChar *q = p + items[i].byte_len;\r
\r
      if (q < end) {\r
        r = expand_case_fold_make_rem_string(&rem, q, end, reg);\r
        if (r != 0) {\r
          onig_node_free(an);\r
          goto mem_err2;\r
        }\r
\r
        xnode = onig_node_list_add(NULL_NODE, snode);\r
        if (IS_NULL(xnode)) {\r
          onig_node_free(an);\r
          onig_node_free(rem);\r
          goto mem_err2;\r
        }\r
        if (IS_NULL(onig_node_list_add(xnode, rem))) {\r
          onig_node_free(an);\r
          onig_node_free(xnode);\r
          onig_node_free(rem);\r
          goto mem_err;\r
        }\r
\r
        NODE_CAR(an) = xnode;\r
      }\r
      else {\r
        NODE_CAR(an) = snode;\r
      }\r
\r
      NODE_CDR(var_anode) = an;\r
      var_anode = an;\r
    }\r
    else {\r
      NODE_CAR(an)     = snode;\r
      NODE_CDR(anode) = an;\r
      anode = an;\r
    }\r
  }\r
\r
  return varlen;\r
\r
 mem_err2:\r
  onig_node_free(snode);\r
\r
 mem_err:\r
  onig_node_free(*rnode);\r
\r
  return ONIGERR_MEMORY;\r
}\r
\r
static int\r
expand_case_fold_string(Node* node, regex_t* reg)\r
{\r
#define THRESHOLD_CASE_FOLD_ALT_FOR_EXPANSION  8\r
\r
  int r, n, len, alt_num;\r
  UChar *start, *end, *p;\r
  Node *top_root, *root, *snode, *prev_node;\r
  OnigCaseFoldCodeItem items[ONIGENC_GET_CASE_FOLD_CODES_MAX_NUM];\r
  StrNode* sn = STR_(node);\r
\r
  if (NODE_STRING_IS_AMBIG(node)) return 0;\r
\r
  start = sn->s;\r
  end   = sn->end;\r
  if (start >= end) return 0;\r
\r
  r = 0;\r
  top_root = root = prev_node = snode = NULL_NODE;\r
  alt_num = 1;\r
  p = start;\r
  while (p < end) {\r
    n = ONIGENC_GET_CASE_FOLD_CODES_BY_STR(reg->enc, reg->case_fold_flag, p, end,\r
                                           items);\r
    if (n < 0) {\r
      r = n;\r
      goto err;\r
    }\r
\r
    len = enclen(reg->enc, p);\r
\r
    if (n == 0) {\r
      if (IS_NULL(snode)) {\r
        if (IS_NULL(root) && IS_NOT_NULL(prev_node)) {\r
          top_root = root = onig_node_list_add(NULL_NODE, prev_node);\r
          if (IS_NULL(root)) {\r
            onig_node_free(prev_node);\r
            goto mem_err;\r
          }\r
        }\r
\r
        prev_node = snode = onig_node_new_str(NULL, NULL);\r
        if (IS_NULL(snode)) goto mem_err;\r
        if (IS_NOT_NULL(root)) {\r
          if (IS_NULL(onig_node_list_add(root, snode))) {\r
            onig_node_free(snode);\r
            goto mem_err;\r
          }\r
        }\r
      }\r
\r
      r = onig_node_str_cat(snode, p, p + len);\r
      if (r != 0) goto err;\r
    }\r
    else {\r
      alt_num *= (n + 1);\r
      if (alt_num > THRESHOLD_CASE_FOLD_ALT_FOR_EXPANSION) break;\r
\r
      if (IS_NULL(root) && IS_NOT_NULL(prev_node)) {\r
        top_root = root = onig_node_list_add(NULL_NODE, prev_node);\r
        if (IS_NULL(root)) {\r
          onig_node_free(prev_node);\r
          goto mem_err;\r
        }\r
      }\r
\r
      r = expand_case_fold_string_alt(n, items, p, len, end, reg, &prev_node);\r
      if (r < 0) goto mem_err;\r
      if (r == 1) {\r
        if (IS_NULL(root)) {\r
          top_root = prev_node;\r
        }\r
        else {\r
          if (IS_NULL(onig_node_list_add(root, prev_node))) {\r
            onig_node_free(prev_node);\r
            goto mem_err;\r
          }\r
        }\r
\r
        root = NODE_CAR(prev_node);\r
      }\r
      else { /* r == 0 */\r
        if (IS_NOT_NULL(root)) {\r
          if (IS_NULL(onig_node_list_add(root, prev_node))) {\r
            onig_node_free(prev_node);\r
            goto mem_err;\r
          }\r
        }\r
      }\r
\r
      snode = NULL_NODE;\r
    }\r
\r
    p += len;\r
  }\r
\r
  if (p < end) {\r
    Node *srem;\r
\r
    r = expand_case_fold_make_rem_string(&srem, p, end, reg);\r
    if (r != 0) goto mem_err;\r
\r
    if (IS_NOT_NULL(prev_node) && IS_NULL(root)) {\r
      top_root = root = onig_node_list_add(NULL_NODE, prev_node);\r
      if (IS_NULL(root)) {\r
        onig_node_free(srem);\r
        onig_node_free(prev_node);\r
        goto mem_err;\r
      }\r
    }\r
\r
    if (IS_NULL(root)) {\r
      prev_node = srem;\r
    }\r
    else {\r
      if (IS_NULL(onig_node_list_add(root, srem))) {\r
        onig_node_free(srem);\r
        goto mem_err;\r
      }\r
    }\r
  }\r
\r
  /* ending */\r
  top_root = (IS_NOT_NULL(top_root) ? top_root : prev_node);\r
  swap_node(node, top_root);\r
  onig_node_free(top_root);\r
  return 0;\r
\r
 mem_err:\r
  r = ONIGERR_MEMORY;\r
\r
 err:\r
  onig_node_free(top_root);\r
  return r;\r
}\r
\r
#ifdef USE_INSISTENT_CHECK_CAPTURES_IN_EMPTY_REPEAT\r
static enum QuantBodyEmpty\r
quantifiers_memory_node_info(Node* node)\r
{\r
  int r = QUANT_BODY_IS_EMPTY;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
  case NODE_ALT:\r
    {\r
      int v;\r
      do {\r
        v = quantifiers_memory_node_info(NODE_CAR(node));\r
        if (v > r) r = v;\r
      } while (IS_NOT_NULL(node = NODE_CDR(node)));\r
    }\r
    break;\r
\r
#ifdef USE_CALL\r
  case NODE_CALL:\r
    if (NODE_IS_RECURSION(node)) {\r
      return QUANT_BODY_IS_EMPTY_REC; /* tiny version */\r
    }\r
    else\r
      r = quantifiers_memory_node_info(NODE_BODY(node));\r
    break;\r
#endif\r
\r
  case NODE_QUANT:\r
    {\r
      QuantNode* qn = QUANT_(node);\r
      if (qn->upper != 0) {\r
        r = quantifiers_memory_node_info(NODE_BODY(node));\r
      }\r
    }\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
      switch (en->type) {\r
      case ENCLOSURE_MEMORY:\r
        if (NODE_IS_RECURSION(node)) {\r
          return QUANT_BODY_IS_EMPTY_REC;\r
        }\r
        return QUANT_BODY_IS_EMPTY_MEM;\r
        break;\r
\r
      case ENCLOSURE_OPTION:\r
      case ENCLOSURE_STOP_BACKTRACK:\r
        r = quantifiers_memory_node_info(NODE_BODY(node));\r
        break;\r
      case ENCLOSURE_IF_ELSE:\r
        {\r
          int v;\r
          r = quantifiers_memory_node_info(NODE_BODY(node));\r
          if (IS_NOT_NULL(en->te.Then)) {\r
            v = quantifiers_memory_node_info(en->te.Then);\r
            if (v > r) r = v;\r
          }\r
          if (IS_NOT_NULL(en->te.Else)) {\r
            v = quantifiers_memory_node_info(en->te.Else);\r
            if (v > r) r = v;\r
          }\r
        }\r
        break;\r
      default:\r
        break;\r
      }\r
    }\r
    break;\r
\r
  case NODE_BACKREF:\r
  case NODE_STRING:\r
  case NODE_CTYPE:\r
  case NODE_CCLASS:\r
  case NODE_ANCHOR:\r
  case NODE_GIMMICK:\r
  default:\r
    break;\r
  }\r
\r
  return r;\r
}\r
#endif /* USE_INSISTENT_CHECK_CAPTURES_IN_EMPTY_REPEAT */\r
\r
\r
#define IN_ALT          (1<<0)\r
#define IN_NOT          (1<<1)\r
#define IN_REAL_REPEAT  (1<<2)\r
#define IN_VAR_REPEAT   (1<<3)\r
#define IN_ZERO_REPEAT  (1<<4)\r
#define IN_MULTI_ENTRY  (1<<5)\r
\r
#ifdef USE_CALL\r
\r
#ifdef __GNUC__\r
__inline\r
#endif\r
static int\r
setup_call_node_call(CallNode* cn, ScanEnv* env, int state)\r
{\r
  MemEnv* mem_env = SCANENV_MEMENV(env);\r
\r
  if (cn->by_number != 0) {\r
    int gnum = cn->group_num;\r
\r
    if (env->num_named > 0 &&\r
        IS_SYNTAX_BV(env->syntax, ONIG_SYN_CAPTURE_ONLY_NAMED_GROUP) &&\r
        ! ONIG_IS_OPTION_ON(env->options, ONIG_OPTION_CAPTURE_GROUP)) {\r
      return ONIGERR_NUMBERED_BACKREF_OR_CALL_NOT_ALLOWED;\r
    }\r
\r
    if (gnum > env->num_mem) {\r
      onig_scan_env_set_error_string(env, ONIGERR_UNDEFINED_GROUP_REFERENCE,\r
                                     cn->name, cn->name_end);\r
      return ONIGERR_UNDEFINED_GROUP_REFERENCE;\r
    }\r
\r
  set_call_attr:\r
    NODE_CALL_BODY(cn) = mem_env[cn->group_num].node;\r
    if (IS_NULL(NODE_CALL_BODY(cn))) {\r
      onig_scan_env_set_error_string(env, ONIGERR_UNDEFINED_NAME_REFERENCE,\r
                                     cn->name, cn->name_end);\r
      return ONIGERR_UNDEFINED_NAME_REFERENCE;\r
    }\r
  }\r
  else {\r
    int *refs;\r
\r
    int n = onig_name_to_group_numbers(env->reg, cn->name, cn->name_end, &refs);\r
    if (n <= 0) {\r
      onig_scan_env_set_error_string(env, ONIGERR_UNDEFINED_NAME_REFERENCE,\r
                                     cn->name, cn->name_end);\r
      return ONIGERR_UNDEFINED_NAME_REFERENCE;\r
    }\r
    else if (n > 1) {\r
      onig_scan_env_set_error_string(env, ONIGERR_MULTIPLEX_DEFINITION_NAME_CALL,\r
                                     cn->name, cn->name_end);\r
      return ONIGERR_MULTIPLEX_DEFINITION_NAME_CALL;\r
    }\r
    else {\r
      cn->group_num = refs[0];\r
      goto set_call_attr;\r
    }\r
  }\r
\r
  return 0;\r
}\r
\r
static void\r
setup_call2_call(Node* node)\r
{\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
  case NODE_ALT:\r
    do {\r
      setup_call2_call(NODE_CAR(node));\r
    } while (IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_QUANT:\r
    setup_call2_call(NODE_BODY(node));\r
    break;\r
\r
  case NODE_ANCHOR:\r
    if (ANCHOR_HAS_BODY(ANCHOR_(node)))\r
      setup_call2_call(NODE_BODY(node));\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      if (en->type == ENCLOSURE_MEMORY) {\r
        if (! NODE_IS_MARK1(node)) {\r
          NODE_STATUS_ADD(node, MARK1);\r
          setup_call2_call(NODE_BODY(node));\r
          NODE_STATUS_REMOVE(node, MARK1);\r
        }\r
      }\r
      else if (en->type == ENCLOSURE_IF_ELSE) {\r
        setup_call2_call(NODE_BODY(node));\r
        if (IS_NOT_NULL(en->te.Then))\r
          setup_call2_call(en->te.Then);\r
        if (IS_NOT_NULL(en->te.Else))\r
          setup_call2_call(en->te.Else);\r
      }\r
      else {\r
        setup_call2_call(NODE_BODY(node));\r
      }\r
    }\r
    break;\r
\r
  case NODE_CALL:\r
    if (! NODE_IS_MARK1(node)) {\r
      NODE_STATUS_ADD(node, MARK1);\r
      {\r
        CallNode* cn = CALL_(node);\r
        Node* called = NODE_CALL_BODY(cn);\r
\r
        cn->entry_count++;\r
\r
        NODE_STATUS_ADD(called, CALLED);\r
        ENCLOSURE_(called)->m.entry_count++;\r
        setup_call2_call(called);\r
      }\r
      NODE_STATUS_REMOVE(node, MARK1);\r
    }\r
    break;\r
\r
  default:\r
    break;\r
  }\r
}\r
\r
static int\r
setup_call(Node* node, ScanEnv* env, int state)\r
{\r
  int r;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
  case NODE_ALT:\r
    do {\r
      r = setup_call(NODE_CAR(node), env, state);\r
    } while (r == 0 && IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_QUANT:\r
    if (QUANT_(node)->upper == 0)\r
      state |= IN_ZERO_REPEAT;\r
\r
    r = setup_call(NODE_BODY(node), env, state);\r
    break;\r
\r
  case NODE_ANCHOR:\r
    if (ANCHOR_HAS_BODY(ANCHOR_(node)))\r
      r = setup_call(NODE_BODY(node), env, state);\r
    else\r
      r = 0;\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      if (en->type == ENCLOSURE_MEMORY) {\r
        if ((state & IN_ZERO_REPEAT) != 0) {\r
          NODE_STATUS_ADD(node, IN_ZERO_REPEAT);\r
          ENCLOSURE_(node)->m.entry_count--;\r
        }\r
        r = setup_call(NODE_BODY(node), env, state);\r
      }\r
      else if (en->type == ENCLOSURE_IF_ELSE) {\r
        r = setup_call(NODE_BODY(node), env, state);\r
        if (r != 0) return r;\r
        if (IS_NOT_NULL(en->te.Then)) {\r
          r = setup_call(en->te.Then, env, state);\r
          if (r != 0) return r;\r
        }\r
        if (IS_NOT_NULL(en->te.Else))\r
          r = setup_call(en->te.Else, env, state);\r
      }\r
      else\r
        r = setup_call(NODE_BODY(node), env, state);\r
    }\r
    break;\r
\r
  case NODE_CALL:\r
    if ((state & IN_ZERO_REPEAT) != 0) {\r
      NODE_STATUS_ADD(node, IN_ZERO_REPEAT);\r
      CALL_(node)->entry_count--;\r
    }\r
\r
    r = setup_call_node_call(CALL_(node), env, state);\r
    break;\r
\r
  default:\r
    r = 0;\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
setup_call2(Node* node)\r
{\r
  int r = 0;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
  case NODE_ALT:\r
    do {\r
      r = setup_call2(NODE_CAR(node));\r
    } while (r == 0 && IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_QUANT:\r
    if (QUANT_(node)->upper != 0)\r
      r = setup_call2(NODE_BODY(node));\r
    break;\r
\r
  case NODE_ANCHOR:\r
    if (ANCHOR_HAS_BODY(ANCHOR_(node)))\r
      r = setup_call2(NODE_BODY(node));\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    if (! NODE_IS_IN_ZERO_REPEAT(node))\r
      r = setup_call2(NODE_BODY(node));\r
\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      if (r != 0) return r;\r
      if (en->type == ENCLOSURE_IF_ELSE) {\r
        if (IS_NOT_NULL(en->te.Then)) {\r
          r = setup_call2(en->te.Then);\r
          if (r != 0) return r;\r
        }\r
        if (IS_NOT_NULL(en->te.Else))\r
          r = setup_call2(en->te.Else);\r
      }\r
    }\r
    break;\r
\r
  case NODE_CALL:\r
    if (! NODE_IS_IN_ZERO_REPEAT(node)) {\r
      setup_call2_call(node);\r
    }\r
    break;\r
\r
  default:\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
\r
static void\r
setup_called_state_call(Node* node, int state)\r
{\r
  switch (NODE_TYPE(node)) {\r
  case NODE_ALT:\r
    state |= IN_ALT;\r
    /* fall */\r
  case NODE_LIST:\r
    do {\r
      setup_called_state_call(NODE_CAR(node), state);\r
    } while (IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_QUANT:\r
    {\r
      QuantNode* qn = QUANT_(node);\r
\r
      if (IS_REPEAT_INFINITE(qn->upper) || qn->upper >= 2)\r
        state |= IN_REAL_REPEAT;\r
      if (qn->lower != qn->upper)\r
        state |= IN_VAR_REPEAT;\r
\r
      setup_called_state_call(NODE_QUANT_BODY(qn), state);\r
    }\r
    break;\r
\r
  case NODE_ANCHOR:\r
    {\r
      AnchorNode* an = ANCHOR_(node);\r
\r
      switch (an->type) {\r
      case ANCHOR_PREC_READ_NOT:\r
      case ANCHOR_LOOK_BEHIND_NOT:\r
        state |= IN_NOT;\r
        /* fall */\r
      case ANCHOR_PREC_READ:\r
      case ANCHOR_LOOK_BEHIND:\r
        setup_called_state_call(NODE_ANCHOR_BODY(an), state);\r
        break;\r
      default:\r
        break;\r
      }\r
    }\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      if (en->type == ENCLOSURE_MEMORY) {\r
        if (NODE_IS_MARK1(node)) {\r
          if ((~en->m.called_state & state) != 0) {\r
            en->m.called_state |= state;\r
            setup_called_state_call(NODE_BODY(node), state);\r
          }\r
        }\r
        else {\r
          NODE_STATUS_ADD(node, MARK1);\r
          en->m.called_state |= state;\r
          setup_called_state_call(NODE_BODY(node), state);\r
          NODE_STATUS_REMOVE(node, MARK1);\r
        }\r
      }\r
      else if (en->type == ENCLOSURE_IF_ELSE) {\r
        if (IS_NOT_NULL(en->te.Then)) {\r
          setup_called_state_call(en->te.Then, state);\r
        }\r
        if (IS_NOT_NULL(en->te.Else))\r
          setup_called_state_call(en->te.Else, state);\r
      }\r
      else {\r
        setup_called_state_call(NODE_BODY(node), state);\r
      }\r
    }\r
    break;\r
\r
  case NODE_CALL:\r
    setup_called_state_call(NODE_BODY(node), state);\r
    break;\r
\r
  default:\r
    break;\r
  }\r
}\r
\r
static void\r
setup_called_state(Node* node, int state)\r
{\r
  switch (NODE_TYPE(node)) {\r
  case NODE_ALT:\r
    state |= IN_ALT;\r
    /* fall */\r
  case NODE_LIST:\r
    do {\r
      setup_called_state(NODE_CAR(node), state);\r
    } while (IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
#ifdef USE_CALL\r
  case NODE_CALL:\r
    setup_called_state_call(node, state);\r
    break;\r
#endif\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      switch (en->type) {\r
      case ENCLOSURE_MEMORY:\r
        if (en->m.entry_count > 1)\r
          state |= IN_MULTI_ENTRY;\r
\r
        en->m.called_state |= state;\r
        /* fall */\r
      case ENCLOSURE_OPTION:\r
      case ENCLOSURE_STOP_BACKTRACK:\r
        setup_called_state(NODE_BODY(node), state);\r
        break;\r
      case ENCLOSURE_IF_ELSE:\r
        setup_called_state(NODE_BODY(node), state);\r
        if (IS_NOT_NULL(en->te.Then))\r
          setup_called_state(en->te.Then, state);\r
        if (IS_NOT_NULL(en->te.Else))\r
          setup_called_state(en->te.Else, state);\r
        break;\r
      }\r
    }\r
    break;\r
\r
  case NODE_QUANT:\r
    {\r
      QuantNode* qn = QUANT_(node);\r
\r
      if (IS_REPEAT_INFINITE(qn->upper) || qn->upper >= 2)\r
        state |= IN_REAL_REPEAT;\r
      if (qn->lower != qn->upper)\r
        state |= IN_VAR_REPEAT;\r
\r
      setup_called_state(NODE_QUANT_BODY(qn), state);\r
    }\r
    break;\r
\r
  case NODE_ANCHOR:\r
    {\r
      AnchorNode* an = ANCHOR_(node);\r
\r
      switch (an->type) {\r
      case ANCHOR_PREC_READ_NOT:\r
      case ANCHOR_LOOK_BEHIND_NOT:\r
        state |= IN_NOT;\r
        /* fall */\r
      case ANCHOR_PREC_READ:\r
      case ANCHOR_LOOK_BEHIND:\r
        setup_called_state(NODE_ANCHOR_BODY(an), state);\r
        break;\r
      default:\r
        break;\r
      }\r
    }\r
    break;\r
\r
  case NODE_BACKREF:\r
  case NODE_STRING:\r
  case NODE_CTYPE:\r
  case NODE_CCLASS:\r
  case NODE_GIMMICK:\r
  default:\r
    break;\r
  }\r
}\r
\r
#endif  /* USE_CALL */\r
\r
\r
static int setup_tree(Node* node, regex_t* reg, int state, ScanEnv* env);\r
\r
#ifdef __GNUC__\r
__inline\r
#endif\r
static int\r
setup_anchor(Node* node, regex_t* reg, int state, ScanEnv* env)\r
{\r
/* allowed node types in look-behind */\r
#define ALLOWED_TYPE_IN_LB \\r
  ( NODE_BIT_LIST | NODE_BIT_ALT | NODE_BIT_STRING | NODE_BIT_CCLASS \\r
  | NODE_BIT_CTYPE | NODE_BIT_ANCHOR | NODE_BIT_ENCLOSURE | NODE_BIT_QUANT \\r
  | NODE_BIT_CALL | NODE_BIT_GIMMICK)\r
\r
#define ALLOWED_ENCLOSURE_IN_LB       ( 1<<ENCLOSURE_MEMORY | 1<<ENCLOSURE_OPTION )\r
#define ALLOWED_ENCLOSURE_IN_LB_NOT   (1<<ENCLOSURE_OPTION)\r
\r
#define ALLOWED_ANCHOR_IN_LB \\r
  ( ANCHOR_LOOK_BEHIND | ANCHOR_BEGIN_LINE | ANCHOR_END_LINE | ANCHOR_BEGIN_BUF \\r
  | ANCHOR_BEGIN_POSITION | ANCHOR_WORD_BOUNDARY | ANCHOR_NO_WORD_BOUNDARY \\r
  | ANCHOR_WORD_BEGIN | ANCHOR_WORD_END \\r
  | ANCHOR_EXTENDED_GRAPHEME_CLUSTER_BOUNDARY \\r
  | ANCHOR_NO_EXTENDED_GRAPHEME_CLUSTER_BOUNDARY )\r
\r
#define ALLOWED_ANCHOR_IN_LB_NOT \\r
  ( ANCHOR_LOOK_BEHIND | ANCHOR_LOOK_BEHIND_NOT | ANCHOR_BEGIN_LINE \\r
  | ANCHOR_END_LINE | ANCHOR_BEGIN_BUF | ANCHOR_BEGIN_POSITION | ANCHOR_WORD_BOUNDARY \\r
  | ANCHOR_NO_WORD_BOUNDARY | ANCHOR_WORD_BEGIN | ANCHOR_WORD_END \\r
  | ANCHOR_EXTENDED_GRAPHEME_CLUSTER_BOUNDARY \\r
  | ANCHOR_NO_EXTENDED_GRAPHEME_CLUSTER_BOUNDARY )\r
\r
  int r;\r
  AnchorNode* an = ANCHOR_(node);\r
\r
  switch (an->type) {\r
  case ANCHOR_PREC_READ:\r
    r = setup_tree(NODE_ANCHOR_BODY(an), reg, state, env);\r
    break;\r
  case ANCHOR_PREC_READ_NOT:\r
    r = setup_tree(NODE_ANCHOR_BODY(an), reg, (state | IN_NOT), env);\r
    break;\r
\r
  case ANCHOR_LOOK_BEHIND:\r
    {\r
      r = check_type_tree(NODE_ANCHOR_BODY(an), ALLOWED_TYPE_IN_LB,\r
                          ALLOWED_ENCLOSURE_IN_LB, ALLOWED_ANCHOR_IN_LB);\r
      if (r < 0) return r;\r
      if (r > 0) return ONIGERR_INVALID_LOOK_BEHIND_PATTERN;\r
      r = setup_tree(NODE_ANCHOR_BODY(an), reg, state, env);\r
      if (r != 0) return r;\r
      r = setup_look_behind(node, reg, env);\r
    }\r
    break;\r
\r
  case ANCHOR_LOOK_BEHIND_NOT:\r
    {\r
      r = check_type_tree(NODE_ANCHOR_BODY(an), ALLOWED_TYPE_IN_LB,\r
                          ALLOWED_ENCLOSURE_IN_LB_NOT, ALLOWED_ANCHOR_IN_LB_NOT);\r
      if (r < 0) return r;\r
      if (r > 0) return ONIGERR_INVALID_LOOK_BEHIND_PATTERN;\r
      r = setup_tree(NODE_ANCHOR_BODY(an), reg, (state | IN_NOT), env);\r
      if (r != 0) return r;\r
      r = setup_look_behind(node, reg, env);\r
    }\r
    break;\r
\r
  default:\r
    r = 0;\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
#ifdef __GNUC__\r
__inline\r
#endif\r
static int\r
setup_quant(Node* node, regex_t* reg, int state, ScanEnv* env)\r
{\r
  int r;\r
  OnigLen d;\r
  QuantNode* qn = QUANT_(node);\r
  Node* body = NODE_BODY(node);\r
\r
  if ((state & IN_REAL_REPEAT) != 0) {\r
    NODE_STATUS_ADD(node, IN_REAL_REPEAT);\r
  }\r
  if ((state & IN_MULTI_ENTRY) != 0) {\r
    NODE_STATUS_ADD(node, IN_MULTI_ENTRY);\r
  }\r
\r
  if (IS_REPEAT_INFINITE(qn->upper) || qn->upper >= 1) {\r
    d = tree_min_len(body, env);\r
    if (d == 0) {\r
#ifdef USE_INSISTENT_CHECK_CAPTURES_IN_EMPTY_REPEAT\r
      qn->body_empty_info = quantifiers_memory_node_info(body);\r
      if (qn->body_empty_info == QUANT_BODY_IS_EMPTY_REC) {\r
        if (NODE_TYPE(body) == NODE_ENCLOSURE &&\r
            ENCLOSURE_(body)->type == ENCLOSURE_MEMORY) {\r
          MEM_STATUS_ON(env->bt_mem_end, ENCLOSURE_(body)->m.regnum);\r
        }\r
      }\r
#else\r
      qn->body_empty_info = QUANT_BODY_IS_EMPTY;\r
#endif\r
    }\r
  }\r
\r
  if (IS_REPEAT_INFINITE(qn->upper) || qn->upper >= 2)\r
    state |= IN_REAL_REPEAT;\r
  if (qn->lower != qn->upper)\r
    state |= IN_VAR_REPEAT;\r
\r
  r = setup_tree(body, reg, state, env);\r
  if (r != 0) return r;\r
\r
  /* expand string */\r
#define EXPAND_STRING_MAX_LENGTH  100\r
  if (NODE_TYPE(body) == NODE_STRING) {\r
    if (!IS_REPEAT_INFINITE(qn->lower) && qn->lower == qn->upper &&\r
        qn->lower > 1 && qn->lower <= EXPAND_STRING_MAX_LENGTH) {\r
      int len = NODE_STRING_LEN(body);\r
      StrNode* sn = STR_(body);\r
\r
      if (len * qn->lower <= EXPAND_STRING_MAX_LENGTH) {\r
        int i, n = qn->lower;\r
        onig_node_conv_to_str_node(node, STR_(body)->flag);\r
        for (i = 0; i < n; i++) {\r
          r = onig_node_str_cat(node, sn->s, sn->end);\r
          if (r != 0) return r;\r
        }\r
        onig_node_free(body);\r
        return r;\r
      }\r
    }\r
  }\r
\r
#ifdef USE_OP_PUSH_OR_JUMP_EXACT\r
  if (qn->greedy && (qn->body_empty_info != QUANT_BODY_IS_NOT_EMPTY)) {\r
    if (NODE_TYPE(body) == NODE_QUANT) {\r
      QuantNode* tqn = QUANT_(body);\r
      if (IS_NOT_NULL(tqn->head_exact)) {\r
        qn->head_exact  = tqn->head_exact;\r
        tqn->head_exact = NULL;\r
      }\r
    }\r
    else {\r
      qn->head_exact = get_head_value_node(NODE_BODY(node), 1, reg);\r
    }\r
  }\r
#endif\r
\r
  return r;\r
}\r
\r
/* setup_tree does the following work.\r
 1. check empty loop. (set qn->body_empty_info)\r
 2. expand ignore-case in char class.\r
 3. set memory status bit flags. (reg->mem_stats)\r
 4. set qn->head_exact for [push, exact] -> [push_or_jump_exact1, exact].\r
 5. find invalid patterns in look-behind.\r
 6. expand repeated string.\r
 */\r
static int\r
setup_tree(Node* node, regex_t* reg, int state, ScanEnv* env)\r
{\r
  int r = 0;\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
    {\r
      Node* prev = NULL_NODE;\r
      do {\r
        r = setup_tree(NODE_CAR(node), reg, state, env);\r
        if (IS_NOT_NULL(prev) && r == 0) {\r
          r = next_setup(prev, NODE_CAR(node), reg);\r
        }\r
        prev = NODE_CAR(node);\r
      } while (r == 0 && IS_NOT_NULL(node = NODE_CDR(node)));\r
    }\r
    break;\r
\r
  case NODE_ALT:\r
    do {\r
      r = setup_tree(NODE_CAR(node), reg, (state | IN_ALT), env);\r
    } while (r == 0 && IS_NOT_NULL(node = NODE_CDR(node)));\r
    break;\r
\r
  case NODE_STRING:\r
    if (IS_IGNORECASE(reg->options) && !NODE_STRING_IS_RAW(node)) {\r
      r = expand_case_fold_string(node, reg);\r
    }\r
    break;\r
\r
  case NODE_BACKREF:\r
    {\r
      int i;\r
      int* p;\r
      BackRefNode* br = BACKREF_(node);\r
      p = BACKREFS_P(br);\r
      for (i = 0; i < br->back_num; i++) {\r
        if (p[i] > env->num_mem)  return ONIGERR_INVALID_BACKREF;\r
        MEM_STATUS_ON(env->backrefed_mem, p[i]);\r
        MEM_STATUS_ON(env->bt_mem_start, p[i]);\r
#ifdef USE_BACKREF_WITH_LEVEL\r
        if (NODE_IS_NEST_LEVEL(node)) {\r
          MEM_STATUS_ON(env->bt_mem_end, p[i]);\r
        }\r
#endif\r
      }\r
    }\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      switch (en->type) {\r
      case ENCLOSURE_OPTION:\r
        {\r
          OnigOptionType options = reg->options;\r
          reg->options = ENCLOSURE_(node)->o.options;\r
          r = setup_tree(NODE_BODY(node), reg, state, env);\r
          reg->options = options;\r
        }\r
        break;\r
\r
      case ENCLOSURE_MEMORY:\r
#ifdef USE_CALL\r
        state |= en->m.called_state;\r
#endif\r
\r
        if ((state & (IN_ALT | IN_NOT | IN_VAR_REPEAT | IN_MULTI_ENTRY)) != 0\r
            || NODE_IS_RECURSION(node)) {\r
          MEM_STATUS_ON(env->bt_mem_start, en->m.regnum);\r
        }\r
        r = setup_tree(NODE_BODY(node), reg, state, env);\r
        break;\r
\r
      case ENCLOSURE_STOP_BACKTRACK:\r
        {\r
          Node* target = NODE_BODY(node);\r
          r = setup_tree(target, reg, state, env);\r
          if (NODE_TYPE(target) == NODE_QUANT) {\r
            QuantNode* tqn = QUANT_(target);\r
            if (IS_REPEAT_INFINITE(tqn->upper) && tqn->lower <= 1 &&\r
                tqn->greedy != 0) {  /* (?>a*), a*+ etc... */\r
              if (NODE_IS_SIMPLE_TYPE(NODE_BODY(target)))\r
                NODE_STATUS_ADD(node, STOP_BT_SIMPLE_REPEAT);\r
            }\r
          }\r
        }\r
        break;\r
\r
      case ENCLOSURE_IF_ELSE:\r
        r = setup_tree(NODE_BODY(node), reg, (state | IN_ALT), env);\r
        if (r != 0) return r;\r
        if (IS_NOT_NULL(en->te.Then)) {\r
          r = setup_tree(en->te.Then, reg, (state | IN_ALT), env);\r
          if (r != 0) return r;\r
        }\r
        if (IS_NOT_NULL(en->te.Else))\r
          r = setup_tree(en->te.Else, reg, (state | IN_ALT), env);\r
        break;\r
      }\r
    }\r
    break;\r
\r
  case NODE_QUANT:\r
    r = setup_quant(node, reg, state, env);\r
    break;\r
\r
  case NODE_ANCHOR:\r
    r = setup_anchor(node, reg, state, env);\r
    break;\r
\r
#ifdef USE_CALL\r
  case NODE_CALL:\r
#endif\r
  case NODE_CTYPE:\r
  case NODE_CCLASS:\r
  case NODE_GIMMICK:\r
  default:\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
/* set skip map for Boyer-Moore search */\r
static int\r
set_bm_skip(UChar* s, UChar* end, OnigEncoding enc ARG_UNUSED,\r
            UChar skip[], int** int_skip)\r
{\r
  int i, len;\r
\r
  len = (int )(end - s);\r
  if (len < ONIG_CHAR_TABLE_SIZE) {\r
    for (i = 0; i < ONIG_CHAR_TABLE_SIZE; i++) skip[i] = len;\r
\r
    for (i = 0; i < len - 1; i++)\r
      skip[s[i]] = len - 1 - i;\r
  }\r
  else {\r
    if (IS_NULL(*int_skip)) {\r
      *int_skip = (int* )xmalloc(sizeof(int) * ONIG_CHAR_TABLE_SIZE);\r
      if (IS_NULL(*int_skip)) return ONIGERR_MEMORY;\r
    }\r
    for (i = 0; i < ONIG_CHAR_TABLE_SIZE; i++) (*int_skip)[i] = len;\r
\r
    for (i = 0; i < len - 1; i++)\r
      (*int_skip)[s[i]] = len - 1 - i;\r
  }\r
  return 0;\r
}\r
\r
#define OPT_EXACT_MAXLEN   24\r
\r
typedef struct {\r
  OnigLen min;  /* min byte length */\r
  OnigLen max;  /* max byte length */\r
} MinMax;\r
\r
typedef struct {\r
  MinMax           mmd;\r
  OnigEncoding     enc;\r
  OnigOptionType   options;\r
  OnigCaseFoldType case_fold_flag;\r
  ScanEnv*         scan_env;\r
} OptEnv;\r
\r
typedef struct {\r
  int left;\r
  int right;\r
} OptAnc;\r
\r
typedef struct {\r
  MinMax     mmd;   /* position */\r
  OptAnc     anc;\r
  int        reach_end;\r
  int        ignore_case;\r
  int        len;\r
  UChar      s[OPT_EXACT_MAXLEN];\r
} OptExact;\r
\r
typedef struct {\r
  MinMax    mmd;    /* position */\r
  OptAnc    anc;\r
  int       value;  /* weighted value */\r
  UChar     map[ONIG_CHAR_TABLE_SIZE];\r
} OptMap;\r
\r
typedef struct {\r
  MinMax    len;\r
  OptAnc    anc;\r
  OptExact  exb;     /* boundary */\r
  OptExact  exm;     /* middle */\r
  OptExact  expr;    /* prec read (?=...) */\r
  OptMap    map;     /* boundary */\r
} NodeOpt;\r
\r
\r
static int\r
map_position_value(OnigEncoding enc, int i)\r
{\r
  static const short int Vals[] = {\r
     5,  1,  1,  1,  1,  1,  1,  1,  1, 10, 10,  1,  1, 10,  1,  1,\r
     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,\r
    12,  4,  7,  4,  4,  4,  4,  4,  4,  5,  5,  5,  5,  5,  5,  5,\r
     6,  6,  6,  6,  6,  6,  6,  6,  6,  6,  5,  5,  5,  5,  5,  5,\r
     5,  6,  6,  6,  6,  7,  6,  6,  6,  6,  6,  6,  6,  6,  6,  6,\r
     6,  6,  6,  6,  6,  6,  6,  6,  6,  6,  6,  5,  6,  5,  5,  5,\r
     5,  6,  6,  6,  6,  7,  6,  6,  6,  6,  6,  6,  6,  6,  6,  6,\r
     6,  6,  6,  6,  6,  6,  6,  6,  6,  6,  6,  5,  5,  5,  5,  1\r
  };\r
\r
  if (i < (int )(sizeof(Vals)/sizeof(Vals[0]))) {\r
    if (i == 0 && ONIGENC_MBC_MINLEN(enc) > 1)\r
      return 20;\r
    else\r
      return (int )Vals[i];\r
  }\r
  else\r
    return 4;   /* Take it easy. */\r
}\r
\r
static int\r
distance_value(MinMax* mm)\r
{\r
  /* 1000 / (min-max-dist + 1) */\r
  static const short int dist_vals[] = {\r
    1000,  500,  333,  250,  200,  167,  143,  125,  111,  100, \r
      91,   83,   77,   71,   67,   63,   59,   56,   53,   50, \r
      48,   45,   43,   42,   40,   38,   37,   36,   34,   33, \r
      32,   31,   30,   29,   29,   28,   27,   26,   26,   25, \r
      24,   24,   23,   23,   22,   22,   21,   21,   20,   20, \r
      20,   19,   19,   19,   18,   18,   18,   17,   17,   17, \r
      16,   16,   16,   16,   15,   15,   15,   15,   14,   14, \r
      14,   14,   14,   14,   13,   13,   13,   13,   13,   13, \r
      12,   12,   12,   12,   12,   12,   11,   11,   11,   11, \r
      11,   11,   11,   11,   11,   10,   10,   10,   10,   10\r
  };\r
\r
  OnigLen d;\r
\r
  if (mm->max == INFINITE_LEN) return 0;\r
\r
  d = mm->max - mm->min;\r
  if (d < (OnigLen )(sizeof(dist_vals)/sizeof(dist_vals[0])))\r
    /* return dist_vals[d] * 16 / (mm->min + 12); */\r
    return (int )dist_vals[d];\r
  else\r
    return 1;\r
}\r
\r
static int\r
comp_distance_value(MinMax* d1, MinMax* d2, int v1, int v2)\r
{\r
  if (v2 <= 0) return -1;\r
  if (v1 <= 0) return  1;\r
\r
  v1 *= distance_value(d1);\r
  v2 *= distance_value(d2);\r
\r
  if (v2 > v1) return  1;\r
  if (v2 < v1) return -1;\r
\r
  if (d2->min < d1->min) return  1;\r
  if (d2->min > d1->min) return -1;\r
  return 0;\r
}\r
\r
static int\r
is_equal_mml(MinMax* a, MinMax* b)\r
{\r
  return (a->min == b->min && a->max == b->max) ? 1 : 0;\r
}\r
\r
static void\r
set_mml(MinMax* l, OnigLen min, OnigLen max)\r
{\r
  l->min = min;\r
  l->max = max;\r
}\r
\r
static void\r
clear_mml(MinMax* l)\r
{\r
  l->min = l->max = 0;\r
}\r
\r
static void\r
copy_mml(MinMax* to, MinMax* from)\r
{\r
  to->min = from->min;\r
  to->max = from->max;\r
}\r
\r
static void\r
add_mml(MinMax* to, MinMax* from)\r
{\r
  to->min = distance_add(to->min, from->min);\r
  to->max = distance_add(to->max, from->max);\r
}\r
\r
static void\r
alt_merge_mml(MinMax* to, MinMax* from)\r
{\r
  if (to->min > from->min) to->min = from->min;\r
  if (to->max < from->max) to->max = from->max;\r
}\r
\r
static void\r
copy_opt_env(OptEnv* to, OptEnv* from)\r
{\r
  *to = *from;\r
}\r
\r
static void\r
clear_opt_anc_info(OptAnc* a)\r
{\r
  a->left  = 0;\r
  a->right = 0;\r
}\r
\r
static void\r
copy_opt_anc_info(OptAnc* to, OptAnc* from)\r
{\r
  *to = *from;\r
}\r
\r
static void\r
concat_opt_anc_info(OptAnc* to, OptAnc* left, OptAnc* right,\r
                    OnigLen left_len, OnigLen right_len)\r
{\r
  clear_opt_anc_info(to);\r
\r
  to->left = left->left;\r
  if (left_len == 0) {\r
    to->left |= right->left;\r
  }\r
\r
  to->right = right->right;\r
  if (right_len == 0) {\r
    to->right |= left->right;\r
  }\r
  else {\r
    to->right |= (left->right & ANCHOR_PREC_READ_NOT);\r
  }\r
}\r
\r
static int\r
is_left(int a)\r
{\r
  if (a == ANCHOR_END_BUF  || a == ANCHOR_SEMI_END_BUF ||\r
      a == ANCHOR_END_LINE || a == ANCHOR_PREC_READ || a == ANCHOR_PREC_READ_NOT)\r
    return 0;\r
\r
  return 1;\r
}\r
\r
static int\r
is_set_opt_anc_info(OptAnc* to, int anc)\r
{\r
  if ((to->left & anc) != 0) return 1;\r
\r
  return ((to->right & anc) != 0 ? 1 : 0);\r
}\r
\r
static void\r
add_opt_anc_info(OptAnc* to, int anc)\r
{\r
  if (is_left(anc))\r
    to->left |= anc;\r
  else\r
    to->right |= anc;\r
}\r
\r
static void\r
remove_opt_anc_info(OptAnc* to, int anc)\r
{\r
  if (is_left(anc))\r
    to->left &= ~anc;\r
  else\r
    to->right &= ~anc;\r
}\r
\r
static void\r
alt_merge_opt_anc_info(OptAnc* to, OptAnc* add)\r
{\r
  to->left  &= add->left;\r
  to->right &= add->right;\r
}\r
\r
static int\r
is_full_opt_exact(OptExact* e)\r
{\r
  return (e->len >= OPT_EXACT_MAXLEN ? 1 : 0);\r
}\r
\r
static void\r
clear_opt_exact(OptExact* e)\r
{\r
  clear_mml(&e->mmd);\r
  clear_opt_anc_info(&e->anc);\r
  e->reach_end   = 0;\r
  e->ignore_case = 0;\r
  e->len         = 0;\r
  e->s[0]        = '\0';\r
}\r
\r
static void\r
copy_opt_exact(OptExact* to, OptExact* from)\r
{\r
  *to = *from;\r
}\r
\r
static int\r
concat_opt_exact(OptExact* to, OptExact* add, OnigEncoding enc)\r
{\r
  int i, j, len, r;\r
  UChar *p, *end;\r
  OptAnc tanc;\r
\r
  if (! to->ignore_case && add->ignore_case) {\r
    if (to->len >= add->len) return 0;  /* avoid */\r
\r
    to->ignore_case = 1;\r
  }\r
\r
  r = 0;\r
  p = add->s;\r
  end = p + add->len;\r
  for (i = to->len; p < end; ) {\r
    len = enclen(enc, p);\r
    if (i + len > OPT_EXACT_MAXLEN) {\r
      r = 1; /* 1:full */\r
      break;\r
    }\r
    for (j = 0; j < len && p < end; j++)\r
      to->s[i++] = *p++;\r
  }\r
\r
  to->len = i;\r
  to->reach_end = (p == end ? add->reach_end : 0);\r
\r
  concat_opt_anc_info(&tanc, &to->anc, &add->anc, 1, 1);\r
  if (! to->reach_end) tanc.right = 0;\r
  copy_opt_anc_info(&to->anc, &tanc);\r
\r
  return r;\r
}\r
\r
static void\r
concat_opt_exact_str(OptExact* to, UChar* s, UChar* end, OnigEncoding enc)\r
{\r
  int i, j, len;\r
  UChar *p;\r
\r
  for (i = to->len, p = s; p < end && i < OPT_EXACT_MAXLEN; ) {\r
    len = enclen(enc, p);\r
    if (i + len > OPT_EXACT_MAXLEN) break;\r
    for (j = 0; j < len && p < end; j++)\r
      to->s[i++] = *p++;\r
  }\r
\r
  to->len = i;\r
}\r
\r
static void\r
alt_merge_opt_exact(OptExact* to, OptExact* add, OptEnv* env)\r
{\r
  int i, j, len;\r
\r
  if (add->len == 0 || to->len == 0) {\r
    clear_opt_exact(to);\r
    return ;\r
  }\r
\r
  if (! is_equal_mml(&to->mmd, &add->mmd)) {\r
    clear_opt_exact(to);\r
    return ;\r
  }\r
\r
  for (i = 0; i < to->len && i < add->len; ) {\r
    if (to->s[i] != add->s[i]) break;\r
    len = enclen(env->enc, to->s + i);\r
\r
    for (j = 1; j < len; j++) {\r
      if (to->s[i+j] != add->s[i+j]) break;\r
    }\r
    if (j < len) break;\r
    i += len;\r
  }\r
\r
  if (! add->reach_end || i < add->len || i < to->len) {\r
    to->reach_end = 0;\r
  }\r
  to->len = i;\r
  to->ignore_case |= add->ignore_case;\r
\r
  alt_merge_opt_anc_info(&to->anc, &add->anc);\r
  if (! to->reach_end) to->anc.right = 0;\r
}\r
\r
static void\r
select_opt_exact(OnigEncoding enc, OptExact* now, OptExact* alt)\r
{\r
  int vn, va;\r
\r
  vn = now->len;\r
  va = alt->len;\r
\r
  if (va == 0) {\r
    return ;\r
  }\r
  else if (vn == 0) {\r
    copy_opt_exact(now, alt);\r
    return ;\r
  }\r
  else if (vn <= 2 && va <= 2) {\r
    /* ByteValTable[x] is big value --> low price */\r
    va = map_position_value(enc, now->s[0]);\r
    vn = map_position_value(enc, alt->s[0]);\r
\r
    if (now->len > 1) vn += 5;\r
    if (alt->len > 1) va += 5;\r
  }\r
\r
  if (now->ignore_case == 0) vn *= 2;\r
  if (alt->ignore_case == 0) va *= 2;\r
\r
  if (comp_distance_value(&now->mmd, &alt->mmd, vn, va) > 0)\r
    copy_opt_exact(now, alt);\r
}\r
\r
static void\r
clear_opt_map(OptMap* map)\r
{\r
  static const OptMap clean_info = {\r
    {0, 0}, {0, 0}, 0,\r
    {\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\r
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0\r
    }\r
  };\r
\r
  xmemcpy(map, &clean_info, sizeof(OptMap));\r
}\r
\r
static void\r
copy_opt_map(OptMap* to, OptMap* from)\r
{\r
  xmemcpy(to,from,sizeof(OptMap));\r
}\r
\r
static void\r
add_char_opt_map(OptMap* m, UChar c, OnigEncoding enc)\r
{\r
  if (m->map[c] == 0) {\r
    m->map[c] = 1;\r
    m->value += map_position_value(enc, c);\r
  }\r
}\r
\r
static int\r
add_char_amb_opt_map(OptMap* map, UChar* p, UChar* end,\r
                     OnigEncoding enc, OnigCaseFoldType fold_flag)\r
{\r
  OnigCaseFoldCodeItem items[ONIGENC_GET_CASE_FOLD_CODES_MAX_NUM];\r
  UChar buf[ONIGENC_CODE_TO_MBC_MAXLEN];\r
  int i, n;\r
\r
  add_char_opt_map(map, p[0], enc);\r
\r
  fold_flag = DISABLE_CASE_FOLD_MULTI_CHAR(fold_flag);\r
  n = ONIGENC_GET_CASE_FOLD_CODES_BY_STR(enc, fold_flag, p, end, items);\r
  if (n < 0) return n;\r
\r
  for (i = 0; i < n; i++) {\r
    ONIGENC_CODE_TO_MBC(enc, items[i].code[0], buf);\r
    add_char_opt_map(map, buf[0], enc);\r
  }\r
\r
  return 0;\r
}\r
\r
static void\r
select_opt_map(OptMap* now, OptMap* alt)\r
{\r
  static int z = 1<<15; /* 32768: something big value */\r
\r
  int vn, va;\r
\r
  if (alt->value == 0) return ;\r
  if (now->value == 0) {\r
    copy_opt_map(now, alt);\r
    return ;\r
  }\r
\r
  vn = z / now->value;\r
  va = z / alt->value;\r
  if (comp_distance_value(&now->mmd, &alt->mmd, vn, va) > 0)\r
    copy_opt_map(now, alt);\r
}\r
\r
static int\r
comp_opt_exact_or_map(OptExact* e, OptMap* m)\r
{\r
#define COMP_EM_BASE  20\r
  int ae, am;\r
\r
  if (m->value <= 0) return -1;\r
\r
  ae = COMP_EM_BASE * e->len * (e->ignore_case ? 1 : 2);\r
  am = COMP_EM_BASE * 5 * 2 / m->value;\r
  return comp_distance_value(&e->mmd, &m->mmd, ae, am);\r
}\r
\r
static void\r
alt_merge_opt_map(OnigEncoding enc, OptMap* to, OptMap* add)\r
{\r
  int i, val;\r
\r
  /* if (! is_equal_mml(&to->mmd, &add->mmd)) return ; */\r
  if (to->value == 0) return ;\r
  if (add->value == 0 || to->mmd.max < add->mmd.min) {\r
    clear_opt_map(to);\r
    return ;\r
  }\r
\r
  alt_merge_mml(&to->mmd, &add->mmd);\r
\r
  val = 0;\r
  for (i = 0; i < ONIG_CHAR_TABLE_SIZE; i++) {\r
    if (add->map[i])\r
      to->map[i] = 1;\r
\r
    if (to->map[i])\r
      val += map_position_value(enc, i);\r
  }\r
  to->value = val;\r
\r
  alt_merge_opt_anc_info(&to->anc, &add->anc);\r
}\r
\r
static void\r
set_bound_node_opt_info(NodeOpt* opt, MinMax* plen)\r
{\r
  copy_mml(&(opt->exb.mmd),  plen);\r
  copy_mml(&(opt->expr.mmd), plen);\r
  copy_mml(&(opt->map.mmd),  plen);\r
}\r
\r
static void\r
clear_node_opt_info(NodeOpt* opt)\r
{\r
  clear_mml(&opt->len);\r
  clear_opt_anc_info(&opt->anc);\r
  clear_opt_exact(&opt->exb);\r
  clear_opt_exact(&opt->exm);\r
  clear_opt_exact(&opt->expr);\r
  clear_opt_map(&opt->map);\r
}\r
\r
static void\r
copy_node_opt_info(NodeOpt* to, NodeOpt* from)\r
{\r
  xmemcpy(to,from,sizeof(NodeOpt));\r
}\r
\r
static void\r
concat_left_node_opt_info(OnigEncoding enc, NodeOpt* to, NodeOpt* add)\r
{\r
  int exb_reach, exm_reach;\r
  OptAnc tanc;\r
\r
  concat_opt_anc_info(&tanc, &to->anc, &add->anc, to->len.max, add->len.max);\r
  copy_opt_anc_info(&to->anc, &tanc);\r
\r
  if (add->exb.len > 0 && to->len.max == 0) {\r
    concat_opt_anc_info(&tanc, &to->anc, &add->exb.anc, to->len.max, add->len.max);\r
    copy_opt_anc_info(&add->exb.anc, &tanc);\r
  }\r
\r
  if (add->map.value > 0 && to->len.max == 0) {\r
    if (add->map.mmd.max == 0)\r
      add->map.anc.left |= to->anc.left;\r
  }\r
\r
  exb_reach = to->exb.reach_end;\r
  exm_reach = to->exm.reach_end;\r
\r
  if (add->len.max != 0)\r
    to->exb.reach_end = to->exm.reach_end = 0;\r
\r
  if (add->exb.len > 0) {\r
    if (exb_reach) {\r
      concat_opt_exact(&to->exb, &add->exb, enc);\r
      clear_opt_exact(&add->exb);\r
    }\r
    else if (exm_reach) {\r
      concat_opt_exact(&to->exm, &add->exb, enc);\r
      clear_opt_exact(&add->exb);\r
    }\r
  }\r
  select_opt_exact(enc, &to->exm, &add->exb);\r
  select_opt_exact(enc, &to->exm, &add->exm);\r
\r
  if (to->expr.len > 0) {\r
    if (add->len.max > 0) {\r
      if (to->expr.len > (int )add->len.max)\r
        to->expr.len = add->len.max;\r
\r
      if (to->expr.mmd.max == 0)\r
        select_opt_exact(enc, &to->exb, &to->expr);\r
      else\r
        select_opt_exact(enc, &to->exm, &to->expr);\r
    }\r
  }\r
  else if (add->expr.len > 0) {\r
    copy_opt_exact(&to->expr, &add->expr);\r
  }\r
\r
  select_opt_map(&to->map, &add->map);\r
  add_mml(&to->len, &add->len);\r
}\r
\r
static void\r
alt_merge_node_opt_info(NodeOpt* to, NodeOpt* add, OptEnv* env)\r
{\r
  alt_merge_opt_anc_info(&to->anc, &add->anc);\r
  alt_merge_opt_exact(&to->exb,  &add->exb, env);\r
  alt_merge_opt_exact(&to->exm,  &add->exm, env);\r
  alt_merge_opt_exact(&to->expr, &add->expr, env);\r
  alt_merge_opt_map(env->enc, &to->map, &add->map);\r
\r
  alt_merge_mml(&to->len, &add->len);\r
}\r
\r
\r
#define MAX_NODE_OPT_INFO_REF_COUNT    5\r
\r
static int\r
optimize_nodes(Node* node, NodeOpt* opt, OptEnv* env)\r
{\r
  int i;\r
  int r;\r
  NodeOpt xo;\r
  OnigEncoding enc;\r
\r
  r = 0;\r
  enc = env->enc;\r
  clear_node_opt_info(opt);\r
  set_bound_node_opt_info(opt, &env->mmd);\r
\r
  switch (NODE_TYPE(node)) {\r
  case NODE_LIST:\r
    {\r
      OptEnv nenv;\r
      Node* nd = node;\r
\r
      copy_opt_env(&nenv, env);\r
      do {\r
        r = optimize_nodes(NODE_CAR(nd), &xo, &nenv);\r
        if (r == 0) {\r
          add_mml(&nenv.mmd, &xo.len);\r
          concat_left_node_opt_info(enc, opt, &xo);\r
        }\r
      } while (r == 0 && IS_NOT_NULL(nd = NODE_CDR(nd)));\r
    }\r
    break;\r
\r
  case NODE_ALT:\r
    {\r
      Node* nd = node;\r
\r
      do {\r
        r = optimize_nodes(NODE_CAR(nd), &xo, env);\r
        if (r == 0) {\r
          if (nd == node) copy_node_opt_info(opt, &xo);\r
          else            alt_merge_node_opt_info(opt, &xo, env);\r
        }\r
      } while ((r == 0) && IS_NOT_NULL(nd = NODE_CDR(nd)));\r
    }\r
    break;\r
\r
  case NODE_STRING:\r
    {\r
      StrNode* sn = STR_(node);\r
      int slen = (int )(sn->end - sn->s);\r
      /* int is_raw = NODE_STRING_IS_RAW(node); */\r
\r
      if (! NODE_STRING_IS_AMBIG(node)) {\r
        concat_opt_exact_str(&opt->exb, sn->s, sn->end, enc);\r
        if (slen > 0) {\r
          add_char_opt_map(&opt->map, *(sn->s), enc);\r
        }\r
        set_mml(&opt->len, slen, slen);\r
      }\r
      else {\r
        int max;\r
\r
        if (NODE_STRING_IS_DONT_GET_OPT_INFO(node)) {\r
          int n = onigenc_strlen(enc, sn->s, sn->end);\r
          max = ONIGENC_MBC_MAXLEN_DIST(enc) * n;\r
        }\r
        else {\r
          concat_opt_exact_str(&opt->exb, sn->s, sn->end, enc);\r
          opt->exb.ignore_case = 1;\r
\r
          if (slen > 0) {\r
            r = add_char_amb_opt_map(&opt->map, sn->s, sn->end,\r
                                     enc, env->case_fold_flag);\r
            if (r != 0) break;\r
          }\r
\r
          max = slen;\r
        }\r
\r
        set_mml(&opt->len, slen, max);\r
      }\r
\r
      if (opt->exb.len == slen)\r
        opt->exb.reach_end = 1;\r
    }\r
    break;\r
\r
  case NODE_CCLASS:\r
    {\r
      int z;\r
      CClassNode* cc = CCLASS_(node);\r
\r
      /* no need to check ignore case. (set in setup_tree()) */\r
\r
      if (IS_NOT_NULL(cc->mbuf) || IS_NCCLASS_NOT(cc)) {\r
        OnigLen min = ONIGENC_MBC_MINLEN(enc);\r
        OnigLen max = ONIGENC_MBC_MAXLEN_DIST(enc);\r
\r
        set_mml(&opt->len, min, max);\r
      }\r
      else {\r
        for (i = 0; i < SINGLE_BYTE_SIZE; i++) {\r
          z = BITSET_AT(cc->bs, i);\r
          if ((z && ! IS_NCCLASS_NOT(cc)) || (! z && IS_NCCLASS_NOT(cc))) {\r
            add_char_opt_map(&opt->map, (UChar )i, enc);\r
          }\r
        }\r
        set_mml(&opt->len, 1, 1);\r
      }\r
    }\r
    break;\r
\r
  case NODE_CTYPE:\r
    {\r
      int min, max;\r
      int range;\r
\r
      max = ONIGENC_MBC_MAXLEN_DIST(enc);\r
\r
      if (max == 1) {\r
        min = 1;\r
\r
        switch (CTYPE_(node)->ctype) {\r
        case CTYPE_ANYCHAR:\r
          break;\r
\r
        case ONIGENC_CTYPE_WORD:\r
          range = CTYPE_(node)->ascii_mode != 0 ? 128 : SINGLE_BYTE_SIZE;\r
          if (CTYPE_(node)->not != 0) {\r
            for (i = 0; i < range; i++) {\r
              if (! ONIGENC_IS_CODE_WORD(enc, i)) {\r
                add_char_opt_map(&opt->map, (UChar )i, enc);\r
              }\r
            }\r
            for (i = range; i < SINGLE_BYTE_SIZE; i++) {\r
              add_char_opt_map(&opt->map, (UChar )i, enc);\r
            }\r
          }\r
          else {\r
            for (i = 0; i < range; i++) {\r
              if (ONIGENC_IS_CODE_WORD(enc, i)) {\r
                add_char_opt_map(&opt->map, (UChar )i, enc);\r
              }\r
            }\r
          }\r
          break;\r
        }\r
      }\r
      else {\r
        min = ONIGENC_MBC_MINLEN(enc);\r
      }\r
      set_mml(&opt->len, min, max);\r
    }\r
    break;\r
\r
  case NODE_ANCHOR:\r
    switch (ANCHOR_(node)->type) {\r
    case ANCHOR_BEGIN_BUF:\r
    case ANCHOR_BEGIN_POSITION:\r
    case ANCHOR_BEGIN_LINE:\r
    case ANCHOR_END_BUF:\r
    case ANCHOR_SEMI_END_BUF:\r
    case ANCHOR_END_LINE:\r
    case ANCHOR_PREC_READ_NOT:\r
    case ANCHOR_LOOK_BEHIND:\r
      add_opt_anc_info(&opt->anc, ANCHOR_(node)->type);\r
      break;\r
\r
    case ANCHOR_PREC_READ:\r
      {\r
        r = optimize_nodes(NODE_BODY(node), &xo, env);\r
        if (r == 0) {\r
          if (xo.exb.len > 0)\r
            copy_opt_exact(&opt->expr, &xo.exb);\r
          else if (xo.exm.len > 0)\r
            copy_opt_exact(&opt->expr, &xo.exm);\r
\r
          opt->expr.reach_end = 0;\r
\r
          if (xo.map.value > 0)\r
            copy_opt_map(&opt->map, &xo.map);\r
        }\r
      }\r
      break;\r
\r
    case ANCHOR_LOOK_BEHIND_NOT:\r
      break;\r
    }\r
    break;\r
\r
  case NODE_BACKREF:\r
    if (! NODE_IS_CHECKER(node)) {\r
      int* backs;\r
      OnigLen min, max, tmin, tmax;\r
      MemEnv* mem_env = SCANENV_MEMENV(env->scan_env);\r
      BackRefNode* br = BACKREF_(node);\r
\r
      if (NODE_IS_RECURSION(node)) {\r
        set_mml(&opt->len, 0, INFINITE_LEN);\r
        break;\r
      }\r
      backs = BACKREFS_P(br);\r
      min = tree_min_len(mem_env[backs[0]].node, env->scan_env);\r
      max = tree_max_len(mem_env[backs[0]].node, env->scan_env);\r
      for (i = 1; i < br->back_num; i++) {\r
        tmin = tree_min_len(mem_env[backs[i]].node, env->scan_env);\r
        tmax = tree_max_len(mem_env[backs[i]].node, env->scan_env);\r
        if (min > tmin) min = tmin;\r
        if (max < tmax) max = tmax;\r
      }\r
      set_mml(&opt->len, min, max);\r
    }\r
    break;\r
\r
#ifdef USE_CALL\r
  case NODE_CALL:\r
    if (NODE_IS_RECURSION(node))\r
      set_mml(&opt->len, 0, INFINITE_LEN);\r
    else {\r
      OnigOptionType save = env->options;\r
      env->options = ENCLOSURE_(NODE_BODY(node))->o.options;\r
      r = optimize_nodes(NODE_BODY(node), opt, env);\r
      env->options = save;\r
    }\r
    break;\r
#endif\r
\r
  case NODE_QUANT:\r
    {\r
      OnigLen min, max;\r
      QuantNode* qn = QUANT_(node);\r
\r
      r = optimize_nodes(NODE_BODY(node), &xo, env);\r
      if (r != 0) break;\r
\r
      if (qn->lower > 0) {\r
        copy_node_opt_info(opt, &xo);\r
        if (xo.exb.len > 0) {\r
          if (xo.exb.reach_end) {\r
            for (i = 2; i <= qn->lower && ! is_full_opt_exact(&opt->exb); i++) {\r
              int rc = concat_opt_exact(&opt->exb, &xo.exb, enc);\r
              if (rc > 0) break;\r
            }\r
            if (i < qn->lower) opt->exb.reach_end = 0;\r
          }\r
        }\r
\r
        if (qn->lower != qn->upper) {\r
          opt->exb.reach_end = 0;\r
          opt->exm.reach_end = 0;\r
        }\r
        if (qn->lower > 1)\r
          opt->exm.reach_end = 0;\r
      }\r
\r
      if (IS_REPEAT_INFINITE(qn->upper)) {\r
        if (env->mmd.max == 0 &&\r
            NODE_IS_ANYCHAR(NODE_BODY(node)) && qn->greedy != 0) {\r
          if (IS_MULTILINE(CTYPE_OPTION(NODE_QUANT_BODY(qn), env)))\r
            add_opt_anc_info(&opt->anc, ANCHOR_ANYCHAR_INF_ML);\r
          else\r
            add_opt_anc_info(&opt->anc, ANCHOR_ANYCHAR_INF);\r
        }\r
\r
        max = (xo.len.max > 0 ? INFINITE_LEN : 0);\r
      }\r
      else {\r
        max = distance_multiply(xo.len.max, qn->upper);\r
      }\r
\r
      min = distance_multiply(xo.len.min, qn->lower);\r
      set_mml(&opt->len, min, max);\r
    }\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    {\r
      EnclosureNode* en = ENCLOSURE_(node);\r
\r
      switch (en->type) {\r
      case ENCLOSURE_OPTION:\r
        {\r
          OnigOptionType save = env->options;\r
\r
          env->options = en->o.options;\r
          r = optimize_nodes(NODE_BODY(node), opt, env);\r
          env->options = save;\r
        }\r
        break;\r
\r
      case ENCLOSURE_MEMORY:\r
#ifdef USE_CALL\r
        en->opt_count++;\r
        if (en->opt_count > MAX_NODE_OPT_INFO_REF_COUNT) {\r
          OnigLen min, max;\r
\r
          min = 0;\r
          max = INFINITE_LEN;\r
          if (NODE_IS_MIN_FIXED(node)) min = en->min_len;\r
          if (NODE_IS_MAX_FIXED(node)) max = en->max_len;\r
          set_mml(&opt->len, min, max);\r
        }\r
        else\r
#endif\r
          {\r
            r = optimize_nodes(NODE_BODY(node), opt, env);\r
            if (is_set_opt_anc_info(&opt->anc, ANCHOR_ANYCHAR_INF_MASK)) {\r
              if (MEM_STATUS_AT0(env->scan_env->backrefed_mem, en->m.regnum))\r
                remove_opt_anc_info(&opt->anc, ANCHOR_ANYCHAR_INF_MASK);\r
            }\r
          }\r
        break;\r
\r
      case ENCLOSURE_STOP_BACKTRACK:\r
        r = optimize_nodes(NODE_BODY(node), opt, env);\r
        break;\r
\r
      case ENCLOSURE_IF_ELSE:\r
        {\r
          OptEnv nenv;\r
\r
          copy_opt_env(&nenv, env);\r
          r = optimize_nodes(NODE_ENCLOSURE_BODY(en), &xo, &nenv);\r
          if (r == 0) {\r
            add_mml(&nenv.mmd, &xo.len);\r
            concat_left_node_opt_info(enc, opt, &xo);\r
            if (IS_NOT_NULL(en->te.Then)) {\r
              r = optimize_nodes(en->te.Then, &xo, &nenv);\r
              if (r == 0) {\r
                concat_left_node_opt_info(enc, opt, &xo);\r
              }\r
            }\r
\r
            if (IS_NOT_NULL(en->te.Else)) {\r
              r = optimize_nodes(en->te.Else, &xo, env);\r
              if (r == 0)\r
                alt_merge_node_opt_info(opt, &xo, env);\r
            }\r
          }\r
        }\r
        break;\r
      }\r
    }\r
    break;\r
\r
  case NODE_GIMMICK:\r
    break;\r
\r
  default:\r
#ifdef ONIG_DEBUG\r
    fprintf(stderr, "optimize_nodes: undefined node type %d\n", NODE_TYPE(node));\r
#endif\r
    r = ONIGERR_TYPE_BUG;\r
    break;\r
  }\r
\r
  return r;\r
}\r
\r
static int\r
set_optimize_exact(regex_t* reg, OptExact* e)\r
{\r
  int r;\r
\r
  if (e->len == 0) return 0;\r
\r
  if (e->ignore_case) {\r
    reg->exact = (UChar* )xmalloc(e->len);\r
    CHECK_NULL_RETURN_MEMERR(reg->exact);\r
    xmemcpy(reg->exact, e->s, e->len);\r
    reg->exact_end = reg->exact + e->len;\r
    reg->optimize = OPTIMIZE_EXACT_IC;\r
  }\r
  else {\r
    int allow_reverse;\r
\r
    reg->exact = onigenc_strdup(reg->enc, e->s, e->s + e->len);\r
    CHECK_NULL_RETURN_MEMERR(reg->exact);\r
    reg->exact_end = reg->exact + e->len;\r
 \r
    allow_reverse =\r
      ONIGENC_IS_ALLOWED_REVERSE_MATCH(reg->enc, reg->exact, reg->exact_end);\r
\r
    if (e->len >= 3 || (e->len >= 2 && allow_reverse)) {\r
      r = set_bm_skip(reg->exact, reg->exact_end, reg->enc,\r
                      reg->map, &(reg->int_map));\r
      if (r != 0) return r;\r
\r
      reg->optimize = (allow_reverse != 0\r
                       ? OPTIMIZE_EXACT_BM : OPTIMIZE_EXACT_BM_NO_REV);\r
    }\r
    else {\r
      reg->optimize = OPTIMIZE_EXACT;\r
    }\r
  }\r
\r
  reg->dmin = e->mmd.min;\r
  reg->dmax = e->mmd.max;\r
\r
  if (reg->dmin != INFINITE_LEN) {\r
    reg->threshold_len = reg->dmin + (int )(reg->exact_end - reg->exact);\r
  }\r
\r
  return 0;\r
}\r
\r
static void\r
set_optimize_map(regex_t* reg, OptMap* m)\r
{\r
  int i;\r
\r
  for (i = 0; i < ONIG_CHAR_TABLE_SIZE; i++)\r
    reg->map[i] = m->map[i];\r
\r
  reg->optimize   = OPTIMIZE_MAP;\r
  reg->dmin       = m->mmd.min;\r
  reg->dmax       = m->mmd.max;\r
\r
  if (reg->dmin != INFINITE_LEN) {\r
    reg->threshold_len = reg->dmin + 1;\r
  }\r
}\r
\r
static void\r
set_sub_anchor(regex_t* reg, OptAnc* anc)\r
{\r
  reg->sub_anchor |= anc->left  & ANCHOR_BEGIN_LINE;\r
  reg->sub_anchor |= anc->right & ANCHOR_END_LINE;\r
}\r
\r
#if defined(ONIG_DEBUG_COMPILE) || defined(ONIG_DEBUG_MATCH)\r
static void print_optimize_info(FILE* f, regex_t* reg);\r
#endif\r
\r
static int\r
set_optimize_info_from_tree(Node* node, regex_t* reg, ScanEnv* scan_env)\r
{\r
  int r;\r
  NodeOpt opt;\r
  OptEnv env;\r
\r
  env.enc            = reg->enc;\r
  env.options        = reg->options;\r
  env.case_fold_flag = reg->case_fold_flag;\r
  env.scan_env       = scan_env;\r
  clear_mml(&env.mmd);\r
\r
  r = optimize_nodes(node, &opt, &env);\r
  if (r != 0) return r;\r
\r
  reg->anchor = opt.anc.left & (ANCHOR_BEGIN_BUF |\r
        ANCHOR_BEGIN_POSITION | ANCHOR_ANYCHAR_INF | ANCHOR_ANYCHAR_INF_ML |\r
        ANCHOR_LOOK_BEHIND);\r
\r
  if ((opt.anc.left & (ANCHOR_LOOK_BEHIND | ANCHOR_PREC_READ_NOT)) != 0)\r
    reg->anchor &= ~ANCHOR_ANYCHAR_INF_ML;\r
\r
  reg->anchor |= opt.anc.right & (ANCHOR_END_BUF | ANCHOR_SEMI_END_BUF |\r
       ANCHOR_PREC_READ_NOT);\r
\r
  if (reg->anchor & (ANCHOR_END_BUF | ANCHOR_SEMI_END_BUF)) {\r
    reg->anchor_dmin = opt.len.min;\r
    reg->anchor_dmax = opt.len.max;\r
  }\r
\r
  if (opt.exb.len > 0 || opt.exm.len > 0) {\r
    select_opt_exact(reg->enc, &opt.exb, &opt.exm);\r
    if (opt.map.value > 0 && comp_opt_exact_or_map(&opt.exb, &opt.map) > 0) {\r
      goto set_map;\r
    }\r
    else {\r
      r = set_optimize_exact(reg, &opt.exb);\r
      set_sub_anchor(reg, &opt.exb.anc);\r
    }\r
  }\r
  else if (opt.map.value > 0) {\r
  set_map:\r
    set_optimize_map(reg, &opt.map);\r
    set_sub_anchor(reg, &opt.map.anc);\r
  }\r
  else {\r
    reg->sub_anchor |= opt.anc.left & ANCHOR_BEGIN_LINE;\r
    if (opt.len.max == 0)\r
      reg->sub_anchor |= opt.anc.right & ANCHOR_END_LINE;\r
  }\r
\r
#if defined(ONIG_DEBUG_COMPILE) || defined(ONIG_DEBUG_MATCH)\r
  print_optimize_info(stderr, reg);\r
#endif\r
  return r;\r
}\r
\r
static void\r
clear_optimize_info(regex_t* reg)\r
{\r
  reg->optimize      = OPTIMIZE_NONE;\r
  reg->anchor        = 0;\r
  reg->anchor_dmin   = 0;\r
  reg->anchor_dmax   = 0;\r
  reg->sub_anchor    = 0;\r
  reg->exact_end     = (UChar* )NULL;\r
  reg->threshold_len = 0;\r
  if (IS_NOT_NULL(reg->exact)) {\r
    xfree(reg->exact);\r
    reg->exact = (UChar* )NULL;\r
  }\r
}\r
\r
#ifdef ONIG_DEBUG\r
\r
static void print_enc_string(FILE* fp, OnigEncoding enc,\r
                             const UChar *s, const UChar *end)\r
{\r
  fprintf(fp, "\nPATTERN: /");\r
\r
  if (ONIGENC_MBC_MINLEN(enc) > 1) {\r
    const UChar *p;\r
    OnigCodePoint code;\r
\r
    p = s;\r
    while (p < end) {\r
      code = ONIGENC_MBC_TO_CODE(enc, p, end);\r
      if (code >= 0x80) {\r
        fprintf(fp, " 0x%04x ", (int )code);\r
      }\r
      else {\r
        fputc((int )code, fp);\r
      }\r
\r
      p += enclen(enc, p);\r
    }\r
  }\r
  else {\r
    while (s < end) {\r
      fputc((int )*s, fp);\r
      s++;\r
    }\r
  }\r
\r
  fprintf(fp, "/\n");\r
}\r
\r
#endif /* ONIG_DEBUG */\r
\r
#if defined(ONIG_DEBUG_COMPILE) || defined(ONIG_DEBUG_MATCH)\r
\r
static void\r
print_distance_range(FILE* f, OnigLen a, OnigLen b)\r
{\r
  if (a == INFINITE_LEN)\r
    fputs("inf", f);\r
  else\r
    fprintf(f, "(%u)", a);\r
\r
  fputs("-", f);\r
\r
  if (b == INFINITE_LEN)\r
    fputs("inf", f);\r
  else\r
    fprintf(f, "(%u)", b);\r
}\r
\r
static void\r
print_anchor(FILE* f, int anchor)\r
{\r
  int q = 0;\r
\r
  fprintf(f, "[");\r
\r
  if (anchor & ANCHOR_BEGIN_BUF) {\r
    fprintf(f, "begin-buf");\r
    q = 1;\r
  }\r
  if (anchor & ANCHOR_BEGIN_LINE) {\r
    if (q) fprintf(f, ", ");\r
    q = 1;\r
    fprintf(f, "begin-line");\r
  }\r
  if (anchor & ANCHOR_BEGIN_POSITION) {\r
    if (q) fprintf(f, ", ");\r
    q = 1;\r
    fprintf(f, "begin-pos");\r
  }\r
  if (anchor & ANCHOR_END_BUF) {\r
    if (q) fprintf(f, ", ");\r
    q = 1;\r
    fprintf(f, "end-buf");\r
  }\r
  if (anchor & ANCHOR_SEMI_END_BUF) {\r
    if (q) fprintf(f, ", ");\r
    q = 1;\r
    fprintf(f, "semi-end-buf");\r
  }\r
  if (anchor & ANCHOR_END_LINE) {\r
    if (q) fprintf(f, ", ");\r
    q = 1;\r
    fprintf(f, "end-line");\r
  }\r
  if (anchor & ANCHOR_ANYCHAR_INF) {\r
    if (q) fprintf(f, ", ");\r
    q = 1;\r
    fprintf(f, "anychar-inf");\r
  }\r
  if (anchor & ANCHOR_ANYCHAR_INF_ML) {\r
    if (q) fprintf(f, ", ");\r
    fprintf(f, "anychar-inf-ml");\r
  }\r
\r
  fprintf(f, "]");\r
}\r
\r
static void\r
print_optimize_info(FILE* f, regex_t* reg)\r
{\r
  static const char* on[] = { "NONE", "EXACT", "EXACT_BM", "EXACT_BM_NOT_REV",\r
                              "EXACT_IC", "MAP" };\r
\r
  fprintf(f, "optimize: %s\n", on[reg->optimize]);\r
  fprintf(f, "  anchor: "); print_anchor(f, reg->anchor);\r
  if ((reg->anchor & ANCHOR_END_BUF_MASK) != 0)\r
    print_distance_range(f, reg->anchor_dmin, reg->anchor_dmax);\r
  fprintf(f, "\n");\r
\r
  if (reg->optimize) {\r
    fprintf(f, "  sub anchor: "); print_anchor(f, reg->sub_anchor);\r
    fprintf(f, "\n");\r
  }\r
  fprintf(f, "\n");\r
\r
  if (reg->exact) {\r
    UChar *p;\r
    fprintf(f, "exact: [");\r
    for (p = reg->exact; p < reg->exact_end; p++) {\r
      fputc(*p, f);\r
    }\r
    fprintf(f, "]: length: %ld\n", (reg->exact_end - reg->exact));\r
  }\r
  else if (reg->optimize & OPTIMIZE_MAP) {\r
    int c, i, n = 0;\r
\r
    for (i = 0; i < ONIG_CHAR_TABLE_SIZE; i++)\r
      if (reg->map[i]) n++;\r
\r
    fprintf(f, "map: n=%d\n", n);\r
    if (n > 0) {\r
      c = 0;\r
      fputc('[', f);\r
      for (i = 0; i < ONIG_CHAR_TABLE_SIZE; i++) {\r
        if (reg->map[i] != 0) {\r
          if (c > 0)  fputs(", ", f);\r
          c++;\r
          if (ONIGENC_MBC_MAXLEN(reg->enc) == 1 &&\r
              ONIGENC_IS_CODE_PRINT(reg->enc, (OnigCodePoint )i))\r
            fputc(i, f);\r
          else\r
            fprintf(f, "%d", i);\r
        }\r
      }\r
      fprintf(f, "]\n");\r
    }\r
  }\r
}\r
#endif\r
\r
\r
extern RegexExt*\r
onig_get_regex_ext(regex_t* reg)\r
{\r
  if (IS_NULL(REG_EXTP(reg))) {\r
    RegexExt* ext = (RegexExt* )xmalloc(sizeof(*ext));\r
    if (IS_NULL(ext)) return 0;\r
\r
    ext->pattern      = 0;\r
    ext->pattern_end  = 0;\r
#ifdef USE_CALLOUT\r
    ext->tag_table    = 0;\r
    ext->callout_num  = 0;\r
    ext->callout_list_alloc = 0;\r
    ext->callout_list = 0;\r
#endif\r
\r
    REG_EXTPL(reg) = (void* )ext;\r
  }\r
\r
  return REG_EXTP(reg);\r
}\r
\r
static void\r
free_regex_ext(RegexExt* ext)\r
{\r
  if (IS_NOT_NULL(ext)) {\r
    if (IS_NOT_NULL(ext->pattern))\r
      xfree((void* )ext->pattern);\r
\r
#ifdef USE_CALLOUT\r
    if (IS_NOT_NULL(ext->tag_table))\r
      onig_callout_tag_table_free(ext->tag_table);\r
\r
    if (IS_NOT_NULL(ext->callout_list))\r
      onig_free_reg_callout_list(ext->callout_num, ext->callout_list);\r
#endif\r
\r
    xfree(ext);\r
  }\r
}\r
\r
extern int\r
onig_ext_set_pattern(regex_t* reg, const UChar* pattern, const UChar* pattern_end)\r
{\r
  RegexExt* ext;\r
  UChar* s;\r
\r
  ext = onig_get_regex_ext(reg);\r
  CHECK_NULL_RETURN_MEMERR(ext);\r
\r
  s = onigenc_strdup(reg->enc, pattern, pattern_end);\r
  CHECK_NULL_RETURN_MEMERR(s);\r
\r
  ext->pattern     = s;\r
  ext->pattern_end = s + (pattern_end - pattern);\r
\r
  return ONIG_NORMAL;\r
}\r
\r
\r
extern void\r
onig_free_body(regex_t* reg)\r
{\r
  if (IS_NOT_NULL(reg)) {\r
    if (IS_NOT_NULL(reg->p))                xfree(reg->p);\r
    if (IS_NOT_NULL(reg->exact))            xfree(reg->exact);\r
    if (IS_NOT_NULL(reg->int_map))          xfree(reg->int_map);\r
    if (IS_NOT_NULL(reg->int_map_backward)) xfree(reg->int_map_backward);\r
    if (IS_NOT_NULL(reg->repeat_range))     xfree(reg->repeat_range);\r
    if (IS_NOT_NULL(REG_EXTP(reg))) {\r
      free_regex_ext(REG_EXTP(reg));\r
      REG_EXTPL(reg) = 0;\r
    }\r
\r
    onig_names_free(reg);\r
  }\r
}\r
\r
extern void\r
onig_free(regex_t* reg)\r
{\r
  if (IS_NOT_NULL(reg)) {\r
    onig_free_body(reg);\r
    xfree(reg);\r
  }\r
}\r
\r
#define REGEX_TRANSFER(to,from) do {\\r
  onig_free_body(to);\\r
  xmemcpy(to, from, sizeof(regex_t));\\r
  xfree(from);\\r
} while (0)\r
\r
extern void\r
onig_transfer(regex_t* to, regex_t* from)\r
{\r
  REGEX_TRANSFER(to, from);\r
}\r
\r
\r
#ifdef ONIG_DEBUG_PARSE\r
static void print_tree P_((FILE* f, Node* node));\r
#endif\r
\r
extern int\r
onig_compile(regex_t* reg, const UChar* pattern, const UChar* pattern_end,\r
             OnigErrorInfo* einfo)\r
{\r
#define COMPILE_INIT_SIZE  20\r
\r
  int r, init_size;\r
  Node*  root;\r
  ScanEnv  scan_env;\r
#ifdef USE_CALL\r
  UnsetAddrList  uslist;\r
#endif\r
\r
  root = 0;\r
  if (IS_NOT_NULL(einfo)) {\r
    einfo->enc = reg->enc;\r
    einfo->par = (UChar* )NULL;\r
  }\r
\r
#ifdef ONIG_DEBUG\r
  print_enc_string(stderr, reg->enc, pattern, pattern_end);\r
#endif\r
\r
  if (reg->alloc == 0) {\r
    init_size = (int )(pattern_end - pattern) * 2;\r
    if (init_size <= 0) init_size = COMPILE_INIT_SIZE;\r
    r = BB_INIT(reg, init_size);\r
    if (r != 0) goto end;\r
  }\r
  else\r
    reg->used = 0;\r
\r
  reg->num_mem            = 0;\r
  reg->num_repeat         = 0;\r
  reg->num_null_check     = 0;\r
  reg->repeat_range_alloc = 0;\r
  reg->repeat_range       = (OnigRepeatRange* )NULL;\r
\r
  r = onig_parse_tree(&root, pattern, pattern_end, reg, &scan_env);\r
  if (r != 0) goto err;\r
\r
  /* mixed use named group and no-named group */\r
  if (scan_env.num_named > 0 &&\r
      IS_SYNTAX_BV(scan_env.syntax, ONIG_SYN_CAPTURE_ONLY_NAMED_GROUP) &&\r
      ! ONIG_IS_OPTION_ON(reg->options, ONIG_OPTION_CAPTURE_GROUP)) {\r
    if (scan_env.num_named != scan_env.num_mem)\r
      r = disable_noname_group_capture(&root, reg, &scan_env);\r
    else\r
      r = numbered_ref_check(root);\r
\r
    if (r != 0) goto err;\r
  }\r
\r
  r = check_backrefs(root, &scan_env);\r
  if (r != 0) goto err;\r
\r
#ifdef USE_CALL\r
  if (scan_env.num_call > 0) {\r
    r = unset_addr_list_init(&uslist, scan_env.num_call);\r
    if (r != 0) goto err;\r
    scan_env.unset_addr_list = &uslist;\r
    r = setup_call(root, &scan_env, 0);\r
    if (r != 0) goto err_unset;\r
    r = setup_call2(root);\r
    if (r != 0) goto err_unset;\r
    r = recursive_call_check_trav(root, &scan_env, 0);\r
    if (r  < 0) goto err_unset;\r
    r = infinite_recursive_call_check_trav(root, &scan_env);\r
    if (r != 0) goto err_unset;\r
\r
    setup_called_state(root, 0);\r
  }\r
\r
  reg->num_call = scan_env.num_call;\r
#endif\r
\r
  r = setup_tree(root, reg, 0, &scan_env);\r
  if (r != 0) goto err_unset;\r
\r
#ifdef ONIG_DEBUG_PARSE\r
  print_tree(stderr, root);\r
#endif\r
\r
  reg->capture_history  = scan_env.capture_history;\r
  reg->bt_mem_start     = scan_env.bt_mem_start;\r
  reg->bt_mem_start    |= reg->capture_history;\r
  if (IS_FIND_CONDITION(reg->options))\r
    MEM_STATUS_ON_ALL(reg->bt_mem_end);\r
  else {\r
    reg->bt_mem_end  = scan_env.bt_mem_end;\r
    reg->bt_mem_end |= reg->capture_history;\r
  }\r
  reg->bt_mem_start |= reg->bt_mem_end;\r
\r
  clear_optimize_info(reg);\r
#ifndef ONIG_DONT_OPTIMIZE\r
  r = set_optimize_info_from_tree(root, reg, &scan_env);\r
  if (r != 0) goto err_unset;\r
#endif\r
\r
  if (IS_NOT_NULL(scan_env.mem_env_dynamic)) {\r
    xfree(scan_env.mem_env_dynamic);\r
    scan_env.mem_env_dynamic = (MemEnv* )NULL;\r
  }\r
\r
  r = compile_tree(root, reg, &scan_env);\r
  if (r == 0) {\r
    if (scan_env.keep_num > 0) {\r
      r = add_opcode(reg, OP_UPDATE_VAR);\r
      if (r != 0) goto err;\r
      r = add_update_var_type(reg, UPDATE_VAR_KEEP_FROM_STACK_LAST);\r
      if (r != 0) goto err;\r
      r = add_mem_num(reg, 0 /* not used */);\r
      if (r != 0) goto err;\r
    }\r
\r
    r = add_opcode(reg, OP_END);\r
#ifdef USE_CALL\r
    if (scan_env.num_call > 0) {\r
      r = fix_unset_addr_list(&uslist, reg);\r
      unset_addr_list_end(&uslist);\r
      if (r != 0) goto err;\r
    }\r
#endif\r
\r
    if ((reg->num_repeat != 0) || (reg->bt_mem_end != 0)\r
#ifdef USE_CALLOUT\r
        || (IS_NOT_NULL(REG_EXTP(reg)) && REG_EXTP(reg)->callout_num != 0)\r
#endif\r
        )\r
      reg->stack_pop_level = STACK_POP_LEVEL_ALL;\r
    else {\r
      if (reg->bt_mem_start != 0)\r
        reg->stack_pop_level = STACK_POP_LEVEL_MEM_START;\r
      else\r
        reg->stack_pop_level = STACK_POP_LEVEL_FREE;\r
    }\r
  }\r
#ifdef USE_CALL\r
  else if (scan_env.num_call > 0) {\r
    unset_addr_list_end(&uslist);\r
  }\r
#endif\r
  onig_node_free(root);\r
\r
#ifdef ONIG_DEBUG_COMPILE\r
  onig_print_names(stderr, reg);\r
  onig_print_compiled_byte_code_list(stderr, reg);\r
#endif\r
\r
 end:\r
  return r;\r
\r
 err_unset:\r
#ifdef USE_CALL\r
  if (scan_env.num_call > 0) {\r
    unset_addr_list_end(&uslist);\r
  }\r
#endif\r
 err:\r
  if (IS_NOT_NULL(scan_env.error)) {\r
    if (IS_NOT_NULL(einfo)) {\r
      einfo->par     = scan_env.error;\r
      einfo->par_end = scan_env.error_end;\r
    }\r
  }\r
\r
  onig_node_free(root);\r
  if (IS_NOT_NULL(scan_env.mem_env_dynamic))\r
      xfree(scan_env.mem_env_dynamic);\r
  return r;\r
}\r
\r
\r
static int onig_inited = 0;\r
\r
extern int\r
onig_reg_init(regex_t* reg, OnigOptionType option, OnigCaseFoldType case_fold_flag,\r
              OnigEncoding enc, OnigSyntaxType* syntax)\r
{\r
  int r;\r
\r
  xmemset(reg, 0, sizeof(*reg));\r
\r
  if (onig_inited == 0) {\r
#if 0\r
    return ONIGERR_LIBRARY_IS_NOT_INITIALIZED;\r
#else\r
    r = onig_initialize(&enc, 1);\r
    if (r != 0)\r
      return ONIGERR_FAIL_TO_INITIALIZE;\r
\r
    onig_warning("You didn't call onig_initialize() explicitly");\r
#endif\r
  }\r
\r
  if (IS_NULL(reg))\r
    return ONIGERR_INVALID_ARGUMENT;\r
\r
  if (ONIGENC_IS_UNDEF(enc))\r
    return ONIGERR_DEFAULT_ENCODING_IS_NOT_SETTED;\r
\r
  if ((option & (ONIG_OPTION_DONT_CAPTURE_GROUP|ONIG_OPTION_CAPTURE_GROUP))\r
      == (ONIG_OPTION_DONT_CAPTURE_GROUP|ONIG_OPTION_CAPTURE_GROUP)) {\r
    return ONIGERR_INVALID_COMBINATION_OF_OPTIONS;\r
  }\r
\r
  if ((option & ONIG_OPTION_NEGATE_SINGLELINE) != 0) {\r
    option |= syntax->options;\r
    option &= ~ONIG_OPTION_SINGLELINE;\r
  }\r
  else\r
    option |= syntax->options;\r
\r
  (reg)->enc              = enc;\r
  (reg)->options          = option;\r
  (reg)->syntax           = syntax;\r
  (reg)->optimize         = 0;\r
  (reg)->exact            = (UChar* )NULL;\r
  (reg)->int_map          = (int* )NULL;\r
  (reg)->int_map_backward = (int* )NULL;\r
  REG_EXTPL(reg) = NULL;\r
\r
  (reg)->p                = (UChar* )NULL;\r
  (reg)->alloc            = 0;\r
  (reg)->used             = 0;\r
  (reg)->name_table       = (void* )NULL;\r
\r
  (reg)->case_fold_flag   = case_fold_flag;\r
  return 0;\r
}\r
\r
extern int\r
onig_new_without_alloc(regex_t* reg,\r
                       const UChar* pattern, const UChar* pattern_end,\r
                       OnigOptionType option, OnigEncoding enc,\r
                       OnigSyntaxType* syntax, OnigErrorInfo* einfo)\r
{\r
  int r;\r
\r
  r = onig_reg_init(reg, option, ONIGENC_CASE_FOLD_DEFAULT, enc, syntax);\r
  if (r != 0) return r;\r
\r
  r = onig_compile(reg, pattern, pattern_end, einfo);\r
  return r;\r
}\r
\r
extern int\r
onig_new(regex_t** reg, const UChar* pattern, const UChar* pattern_end,\r
         OnigOptionType option, OnigEncoding enc, OnigSyntaxType* syntax,\r
         OnigErrorInfo* einfo)\r
{\r
  int r;\r
\r
  *reg = (regex_t* )xmalloc(sizeof(regex_t));\r
  if (IS_NULL(*reg)) return ONIGERR_MEMORY;\r
\r
  r = onig_reg_init(*reg, option, ONIGENC_CASE_FOLD_DEFAULT, enc, syntax);\r
  if (r != 0) goto err;\r
\r
  r = onig_compile(*reg, pattern, pattern_end, einfo);\r
  if (r != 0) {\r
  err:\r
    onig_free(*reg);\r
    *reg = NULL;\r
  }\r
  return r;\r
}\r
\r
extern int\r
onig_initialize(OnigEncoding encodings[], int n)\r
{\r
  int i;\r
  int r;\r
\r
  if (onig_inited != 0)\r
    return 0;\r
\r
  onigenc_init();\r
\r
  onig_inited = 1;\r
\r
  for (i = 0; i < n; i++) {\r
    OnigEncoding enc = encodings[i];\r
    r = onig_initialize_encoding(enc);\r
    if (r != 0)\r
      return r;\r
  }\r
\r
  return ONIG_NORMAL;\r
}\r
\r
typedef struct EndCallListItem {\r
  struct EndCallListItem* next;\r
  void (*func)(void);\r
} EndCallListItemType;\r
\r
static EndCallListItemType* EndCallTop;\r
\r
extern void onig_add_end_call(void (*func)(void))\r
{\r
  EndCallListItemType* item;\r
\r
  item = (EndCallListItemType* )xmalloc(sizeof(*item));\r
  if (item == 0) return ;\r
\r
  item->next = EndCallTop;\r
  item->func = func;\r
\r
  EndCallTop = item;\r
}\r
\r
static void\r
exec_end_call_list(void)\r
{\r
  EndCallListItemType* prev;\r
  void (*func)(void);\r
\r
  while (EndCallTop != 0) {\r
    func = EndCallTop->func;\r
    (*func)();\r
\r
    prev = EndCallTop;\r
    EndCallTop = EndCallTop->next;\r
    xfree(prev);\r
  }\r
}\r
\r
extern int\r
onig_end(void)\r
{\r
  exec_end_call_list();\r
\r
#ifdef USE_CALLOUT\r
  onig_global_callout_names_free();\r
#endif\r
\r
  onigenc_end();\r
\r
  onig_inited = 0;\r
\r
  return 0;\r
}\r
\r
extern int\r
onig_is_in_code_range(const UChar* p, OnigCodePoint code)\r
{\r
  OnigCodePoint n, *data;\r
  OnigCodePoint low, high, x;\r
\r
  GET_CODE_POINT(n, p);\r
  data = (OnigCodePoint* )p;\r
  data++;\r
\r
  for (low = 0, high = n; low < high; ) {\r
    x = (low + high) >> 1;\r
    if (code > data[x * 2 + 1])\r
      low = x + 1;\r
    else\r
      high = x;\r
  }\r
\r
  return ((low < n && code >= data[low * 2]) ? 1 : 0);\r
}\r
\r
extern int\r
onig_is_code_in_cc_len(int elen, OnigCodePoint code, /* CClassNode* */ void* cc_arg)\r
{\r
  int found;\r
  CClassNode* cc = (CClassNode* )cc_arg;\r
\r
  if (elen > 1 || (code >= SINGLE_BYTE_SIZE)) {\r
    if (IS_NULL(cc->mbuf)) {\r
      found = 0;\r
    }\r
    else {\r
      found = (onig_is_in_code_range(cc->mbuf->p, code) != 0 ? 1 : 0);\r
    }\r
  }\r
  else {\r
    found = (BITSET_AT(cc->bs, code) == 0 ? 0 : 1);\r
  }\r
\r
  if (IS_NCCLASS_NOT(cc))\r
    return !found;\r
  else\r
    return found;\r
}\r
\r
extern int\r
onig_is_code_in_cc(OnigEncoding enc, OnigCodePoint code, CClassNode* cc)\r
{\r
  int len;\r
\r
  if (ONIGENC_MBC_MINLEN(enc) > 1) {\r
    len = 2;\r
  }\r
  else {\r
    len = ONIGENC_CODE_TO_MBCLEN(enc, code);\r
  }\r
  return onig_is_code_in_cc_len(len, code, cc);\r
}\r
\r
\r
#ifdef ONIG_DEBUG_PARSE\r
\r
static void\r
p_string(FILE* f, int len, UChar* s)\r
{\r
  fputs(":", f);\r
  while (len-- > 0) { fputc(*s++, f); }\r
}\r
\r
static void\r
Indent(FILE* f, int indent)\r
{\r
  int i;\r
  for (i = 0; i < indent; i++) putc(' ', f);\r
}\r
\r
static void\r
print_indent_tree(FILE* f, Node* node, int indent)\r
{\r
  int i;\r
  NodeType type;\r
  UChar* p;\r
  int add = 3;\r
\r
  Indent(f, indent);\r
  if (IS_NULL(node)) {\r
    fprintf(f, "ERROR: null node!!!\n");\r
    exit (0);\r
  }\r
\r
  type = NODE_TYPE(node);\r
  switch (type) {\r
  case NODE_LIST:\r
  case NODE_ALT:\r
    if (type == NODE_LIST)\r
      fprintf(f, "<list:%p>\n", node);\r
    else\r
      fprintf(f, "<alt:%p>\n", node);\r
\r
    print_indent_tree(f, NODE_CAR(node), indent + add);\r
    while (IS_NOT_NULL(node = NODE_CDR(node))) {\r
      if (NODE_TYPE(node) != type) {\r
        fprintf(f, "ERROR: list/alt right is not a cons. %d\n", NODE_TYPE(node));\r
        exit(0);\r
      }\r
      print_indent_tree(f, NODE_CAR(node), indent + add);\r
    }\r
    break;\r
\r
  case NODE_STRING:\r
    fprintf(f, "<string%s:%p>", (NODE_STRING_IS_RAW(node) ? "-raw" : ""), node);\r
    for (p = STR_(node)->s; p < STR_(node)->end; p++) {\r
      if (*p >= 0x20 && *p < 0x7f)\r
        fputc(*p, f);\r
      else {\r
        fprintf(f, " 0x%02x", *p);\r
      }\r
    }\r
    break;\r
\r
  case NODE_CCLASS:\r
    fprintf(f, "<cclass:%p>", node);\r
    if (IS_NCCLASS_NOT(CCLASS_(node))) fputs(" not", f);\r
    if (CCLASS_(node)->mbuf) {\r
      BBuf* bbuf = CCLASS_(node)->mbuf;\r
      for (i = 0; i < bbuf->used; i++) {\r
        if (i > 0) fprintf(f, ",");\r
        fprintf(f, "%0x", bbuf->p[i]);\r
      }\r
    }\r
    break;\r
\r
  case NODE_CTYPE:\r
    fprintf(f, "<ctype:%p> ", node);\r
    switch (CTYPE_(node)->ctype) {\r
    case CTYPE_ANYCHAR:\r
      fprintf(f, "<anychar:%p>", node);\r
      break;\r
\r
    case ONIGENC_CTYPE_WORD:\r
      if (CTYPE_(node)->not != 0)\r
        fputs("not word", f);\r
      else\r
        fputs("word",     f);\r
\r
      if (CTYPE_(node)->ascii_mode != 0)\r
        fputs(" (ascii)", f);\r
\r
      break;\r
\r
    default:\r
      fprintf(f, "ERROR: undefined ctype.\n");\r
      exit(0);\r
    }\r
    break;\r
\r
  case NODE_ANCHOR:\r
    fprintf(f, "<anchor:%p> ", node);\r
    switch (ANCHOR_(node)->type) {\r
    case ANCHOR_BEGIN_BUF:        fputs("begin buf",      f); break;\r
    case ANCHOR_END_BUF:          fputs("end buf",        f); break;\r
    case ANCHOR_BEGIN_LINE:       fputs("begin line",     f); break;\r
    case ANCHOR_END_LINE:         fputs("end line",       f); break;\r
    case ANCHOR_SEMI_END_BUF:     fputs("semi end buf",   f); break;\r
    case ANCHOR_BEGIN_POSITION:   fputs("begin position", f); break;\r
\r
    case ANCHOR_WORD_BOUNDARY:    fputs("word boundary",     f); break;\r
    case ANCHOR_NO_WORD_BOUNDARY: fputs("not word boundary", f); break;\r
#ifdef USE_WORD_BEGIN_END\r
    case ANCHOR_WORD_BEGIN:       fputs("word begin", f);     break;\r
    case ANCHOR_WORD_END:         fputs("word end", f);       break;\r
#endif\r
    case ANCHOR_EXTENDED_GRAPHEME_CLUSTER_BOUNDARY:\r
      fputs("extended-grapheme-cluster boundary", f); break;\r
    case ANCHOR_NO_EXTENDED_GRAPHEME_CLUSTER_BOUNDARY:\r
      fputs("no-extended-grapheme-cluster boundary", f); break;\r
    case ANCHOR_PREC_READ:\r
      fprintf(f, "prec read\n");\r
      print_indent_tree(f, NODE_BODY(node), indent + add);\r
      break;\r
    case ANCHOR_PREC_READ_NOT:\r
      fprintf(f, "prec read not\n");\r
      print_indent_tree(f, NODE_BODY(node), indent + add);\r
      break;\r
    case ANCHOR_LOOK_BEHIND:\r
      fprintf(f, "look behind\n");\r
      print_indent_tree(f, NODE_BODY(node), indent + add);\r
      break;\r
    case ANCHOR_LOOK_BEHIND_NOT:\r
      fprintf(f, "look behind not\n");\r
      print_indent_tree(f, NODE_BODY(node), indent + add);\r
      break;\r
\r
    default:\r
      fprintf(f, "ERROR: undefined anchor type.\n");\r
      break;\r
    }\r
    break;\r
\r
  case NODE_BACKREF:\r
    {\r
      int* p;\r
      BackRefNode* br = BACKREF_(node);\r
      p = BACKREFS_P(br);\r
      fprintf(f, "<backref%s:%p>", NODE_IS_CHECKER(node) ? "-checker" : "", node);\r
      for (i = 0; i < br->back_num; i++) {\r
        if (i > 0) fputs(", ", f);\r
        fprintf(f, "%d", p[i]);\r
      }\r
    }\r
    break;\r
\r
#ifdef USE_CALL\r
  case NODE_CALL:\r
    {\r
      CallNode* cn = CALL_(node);\r
      fprintf(f, "<call:%p>", node);\r
      p_string(f, cn->name_end - cn->name, cn->name);\r
    }\r
    break;\r
#endif\r
\r
  case NODE_QUANT:\r
    fprintf(f, "<quantifier:%p>{%d,%d}%s\n", node,\r
            QUANT_(node)->lower, QUANT_(node)->upper,\r
            (QUANT_(node)->greedy ? "" : "?"));\r
    print_indent_tree(f, NODE_BODY(node), indent + add);\r
    break;\r
\r
  case NODE_ENCLOSURE:\r
    fprintf(f, "<enclosure:%p> ", node);\r
    switch (ENCLOSURE_(node)->type) {\r
    case ENCLOSURE_OPTION:\r
      fprintf(f, "option:%d", ENCLOSURE_(node)->o.options);\r
      break;\r
    case ENCLOSURE_MEMORY:\r
      fprintf(f, "memory:%d", ENCLOSURE_(node)->m.regnum);\r
      break;\r
    case ENCLOSURE_STOP_BACKTRACK:\r
      fprintf(f, "stop-bt");\r
      break;\r
\r
    default:\r
      break;\r
    }\r
    fprintf(f, "\n");\r
    print_indent_tree(f, NODE_BODY(node), indent + add);\r
    break;\r
\r
  case NODE_GIMMICK:\r
    fprintf(f, "<gimmick:%p> ", node);\r
    switch (GIMMICK_(node)->type) {\r
    case GIMMICK_FAIL:\r
      fprintf(f, "fail");\r
      break;\r
    case GIMMICK_KEEP:\r
      fprintf(f, "keep:%d", GIMMICK_(node)->id);\r
      break;\r
    case GIMMICK_SAVE:\r
      fprintf(f, "save:%d:%d", GIMMICK_(node)->detail_type, GIMMICK_(node)->id);\r
      break;\r
    case GIMMICK_UPDATE_VAR:\r
      fprintf(f, "update_var:%d:%d", GIMMICK_(node)->detail_type, GIMMICK_(node)->id);\r
      break;\r
#ifdef USE_CALLOUT\r
    case GIMMICK_CALLOUT:\r
      switch (GIMMICK_(node)->detail_type) {\r
      case ONIG_CALLOUT_OF_CONTENTS:\r
        fprintf(f, "callout:contents:%d", GIMMICK_(node)->num);\r
        break;\r
      case ONIG_CALLOUT_OF_NAME:\r
        fprintf(f, "callout:name:%d:%d", GIMMICK_(node)->id, GIMMICK_(node)->num);\r
        break;\r
      }\r
#endif\r
    }\r
    break;\r
\r
  default:\r
    fprintf(f, "print_indent_tree: undefined node type %d\n", NODE_TYPE(node));\r
    break;\r
  }\r
\r
  if (type != NODE_LIST && type != NODE_ALT && type != NODE_QUANT &&\r
      type != NODE_ENCLOSURE)\r
    fprintf(f, "\n");\r
  fflush(f);\r
}\r
\r
static void\r
print_tree(FILE* f, Node* node)\r
{\r
  print_indent_tree(f, node, 0);\r
}\r
#endif\r