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ruby/regparse.h

329 строки
11 KiB
C
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#ifndef REGPARSE_H
#define REGPARSE_H
/**********************************************************************
regparse.h - Oniguruma (regular expression library)
**********************************************************************/
/*-
* Copyright (c) 2002-2006 K.Kosako <sndgk393 AT ybb DOT ne DOT jp>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "regint.h"
/* node type */
#define N_STRING (1<< 0)
#define N_CCLASS (1<< 1)
#define N_CTYPE (1<< 2)
#define N_ANYCHAR (1<< 3)
#define N_BACKREF (1<< 4)
#define N_QUALIFIER (1<< 5)
#define N_EFFECT (1<< 6)
#define N_ANCHOR (1<< 7)
#define N_LIST (1<< 8)
#define N_ALT (1<< 9)
#define N_CALL (1<<10)
#define IS_NODE_TYPE_SIMPLE(type) \
(((type) & (N_STRING | N_CCLASS | N_CTYPE | N_ANYCHAR | N_BACKREF)) != 0)
#define NTYPE(node) ((node)->type)
#define NCONS(node) ((node)->u.cons)
#define NSTRING(node) ((node)->u.str)
#define NCCLASS(node) ((node)->u.cclass)
#define NCTYPE(node) ((node)->u.ctype)
#define NQUALIFIER(node) ((node)->u.qualifier)
#define NANCHOR(node) ((node)->u.anchor)
#define NBACKREF(node) ((node)->u.backref)
#define NEFFECT(node) ((node)->u.effect)
#define NCALL(node) ((node)->u.call)
#define CTYPE_WORD (1<<0)
#define CTYPE_NOT_WORD (1<<1)
#define CTYPE_WHITE_SPACE (1<<2)
#define CTYPE_NOT_WHITE_SPACE (1<<3)
#define CTYPE_DIGIT (1<<4)
#define CTYPE_NOT_DIGIT (1<<5)
#define CTYPE_XDIGIT (1<<6)
#define CTYPE_NOT_XDIGIT (1<<7)
#define ANCHOR_ANYCHAR_STAR_MASK (ANCHOR_ANYCHAR_STAR | ANCHOR_ANYCHAR_STAR_ML)
#define ANCHOR_END_BUF_MASK (ANCHOR_END_BUF | ANCHOR_SEMI_END_BUF)
#define EFFECT_MEMORY (1<<0)
#define EFFECT_OPTION (1<<1)
#define EFFECT_STOP_BACKTRACK (1<<2)
#define NODE_STR_MARGIN 16
#define NODE_STR_BUF_SIZE 24 /* sizeof(CClassNode) - sizeof(int)*4 */
#define NODE_BACKREFS_SIZE 6
#define NSTR_RAW (1<<0) /* by backslashed number */
#define NSTR_AMBIG (1<<1)
#define NSTR_AMBIG_REDUCE (1<<2)
#define NSTRING_LEN(node) ((node)->u.str.end - (node)->u.str.s)
#define NSTRING_SET_RAW(node) (node)->u.str.flag |= NSTR_RAW
#define NSTRING_CLEAR_RAW(node) (node)->u.str.flag &= ~NSTR_RAW
#define NSTRING_SET_AMBIG(node) (node)->u.str.flag |= NSTR_AMBIG
#define NSTRING_SET_AMBIG_REDUCE(node) (node)->u.str.flag |= NSTR_AMBIG_REDUCE
#define NSTRING_IS_RAW(node) (((node)->u.str.flag & NSTR_RAW) != 0)
#define NSTRING_IS_AMBIG(node) (((node)->u.str.flag & NSTR_AMBIG) != 0)
#define NSTRING_IS_AMBIG_REDUCE(node) \
(((node)->u.str.flag & NSTR_AMBIG_REDUCE) != 0)
#define BACKREFS_P(br) \
(IS_NOT_NULL((br)->back_dynamic) ? (br)->back_dynamic : (br)->back_static);
#define NQ_TARGET_ISNOT_EMPTY 0
#define NQ_TARGET_IS_EMPTY 1
#define NQ_TARGET_IS_EMPTY_MEM 2
#define NQ_TARGET_IS_EMPTY_REC 3
typedef struct {
UChar* s;
UChar* end;
unsigned int flag;
int capa; /* (allocated size - 1) or 0: use buf[] */
UChar buf[NODE_STR_BUF_SIZE];
} StrNode;
/* move to regint.h */
#if 0
typedef struct {
int flags;
BitSet bs;
BBuf* mbuf; /* multi-byte info or NULL */
} CClassNode;
#endif
typedef struct {
int state;
struct _Node* target;
int lower;
int upper;
int greedy;
int target_empty_info;
struct _Node* head_exact;
struct _Node* next_head_exact;
int is_refered; /* include called node. don't eliminate even if {0} */
#ifdef USE_COMBINATION_EXPLOSION_CHECK
int comb_exp_check_num; /* 1,2,3...: check, 0: no check */
#endif
} QualifierNode;
/* status bits */
#define NST_MIN_FIXED (1<<0)
#define NST_MAX_FIXED (1<<1)
#define NST_CLEN_FIXED (1<<2)
#define NST_MARK1 (1<<3)
#define NST_MARK2 (1<<4)
#define NST_MEM_BACKREFED (1<<5)
#define NST_STOP_BT_SIMPLE_REPEAT (1<<6)
#define NST_RECURSION (1<<7)
#define NST_CALLED (1<<8)
#define NST_ADDR_FIXED (1<<9)
#define NST_NAMED_GROUP (1<<10)
#define NST_NAME_REF (1<<11)
#define NST_IN_REPEAT (1<<12) /* STK_REPEAT is nested in stack. */
#define NST_NEST_LEVEL (1<<13)
#define NST_BY_NUMBER (1<<14) /* {n,m} */
#define SET_EFFECT_STATUS(node,f) (node)->u.effect.state |= (f)
#define CLEAR_EFFECT_STATUS(node,f) (node)->u.effect.state &= ~(f)
#define IS_EFFECT_CALLED(en) (((en)->state & NST_CALLED) != 0)
#define IS_EFFECT_ADDR_FIXED(en) (((en)->state & NST_ADDR_FIXED) != 0)
#define IS_EFFECT_RECURSION(en) (((en)->state & NST_RECURSION) != 0)
#define IS_EFFECT_MARK1(en) (((en)->state & NST_MARK1) != 0)
#define IS_EFFECT_MARK2(en) (((en)->state & NST_MARK2) != 0)
#define IS_EFFECT_MIN_FIXED(en) (((en)->state & NST_MIN_FIXED) != 0)
#define IS_EFFECT_MAX_FIXED(en) (((en)->state & NST_MAX_FIXED) != 0)
#define IS_EFFECT_CLEN_FIXED(en) (((en)->state & NST_CLEN_FIXED) != 0)
#define IS_EFFECT_STOP_BT_SIMPLE_REPEAT(en) \
(((en)->state & NST_STOP_BT_SIMPLE_REPEAT) != 0)
#define IS_EFFECT_NAMED_GROUP(en) (((en)->state & NST_NAMED_GROUP) != 0)
#define SET_CALL_RECURSION(node) (node)->u.call.state |= NST_RECURSION
#define IS_CALL_RECURSION(cn) (((cn)->state & NST_RECURSION) != 0)
#define IS_CALL_NAME_REF(cn) (((cn)->state & NST_NAME_REF) != 0)
#define IS_BACKREF_NAME_REF(bn) (((bn)->state & NST_NAME_REF) != 0)
#define IS_BACKREF_NEST_LEVEL(bn) (((bn)->state & NST_NEST_LEVEL) != 0)
#define IS_QUALIFIER_IN_REPEAT(qn) (((qn)->state & NST_IN_REPEAT) != 0)
#define IS_QUALIFIER_BY_NUMBER(qn) (((qn)->state & NST_BY_NUMBER) != 0)
typedef struct {
int state;
int type;
int regnum;
OnigOptionType option;
struct _Node* target;
AbsAddrType call_addr;
/* for multiple call reference */
OnigDistance min_len; /* min length (byte) */
OnigDistance max_len; /* max length (byte) */
int char_len; /* character length */
int opt_count; /* referenced count in optimize_node_left() */
} EffectNode;
#define CALLNODE_REFNUM_UNDEF -1
#ifdef USE_SUBEXP_CALL
typedef struct {
int offset;
struct _Node* target;
} UnsetAddr;
typedef struct {
int num;
int alloc;
UnsetAddr* us;
} UnsetAddrList;
typedef struct {
int state;
int ref_num;
UChar* name;
UChar* name_end;
struct _Node* target; /* EffectNode : EFFECT_MEMORY */
UnsetAddrList* unset_addr_list;
} CallNode;
#endif
typedef struct {
int state;
int back_num;
int back_static[NODE_BACKREFS_SIZE];
int* back_dynamic;
int nest_level;
} BackrefNode;
typedef struct {
int type;
struct _Node* target;
int char_len;
} AnchorNode;
typedef struct _Node {
int type;
union {
StrNode str;
CClassNode cclass;
QualifierNode qualifier;
EffectNode effect;
#ifdef USE_SUBEXP_CALL
CallNode call;
#endif
BackrefNode backref;
AnchorNode anchor;
struct {
struct _Node* left;
struct _Node* right;
} cons;
struct {
int type;
} ctype;
} u;
} Node;
#define NULL_NODE ((Node* )0)
#define SCANENV_MEMNODES_SIZE 8
#define SCANENV_MEM_NODES(senv) \
(IS_NOT_NULL((senv)->mem_nodes_dynamic) ? \
(senv)->mem_nodes_dynamic : (senv)->mem_nodes_static)
typedef struct {
OnigOptionType option;
OnigAmbigType ambig_flag;
OnigEncoding enc;
OnigSyntaxType* syntax;
BitStatusType capture_history;
BitStatusType bt_mem_start;
BitStatusType bt_mem_end;
BitStatusType backrefed_mem;
UChar* pattern;
UChar* pattern_end;
UChar* error;
UChar* error_end;
regex_t* reg; /* for reg->names only */
int num_call;
#ifdef USE_SUBEXP_CALL
UnsetAddrList* unset_addr_list;
#endif
int num_mem;
#ifdef USE_NAMED_GROUP
int num_named;
#endif
int mem_alloc;
Node* mem_nodes_static[SCANENV_MEMNODES_SIZE];
Node** mem_nodes_dynamic;
#ifdef USE_COMBINATION_EXPLOSION_CHECK
int num_comb_exp_check;
int comb_exp_max_regnum;
int curr_max_regnum;
int has_recursion;
#endif
} ScanEnv;
#define IS_SYNTAX_OP(syn, opm) (((syn)->op & (opm)) != 0)
#define IS_SYNTAX_OP2(syn, opm) (((syn)->op2 & (opm)) != 0)
#define IS_SYNTAX_BV(syn, bvm) (((syn)->behavior & (bvm)) != 0)
#ifdef USE_NAMED_GROUP
typedef struct {
int new_val;
} GroupNumRemap;
extern int onig_renumber_name_table P_((regex_t* reg, GroupNumRemap* map));
#endif
extern int onig_strncmp P_((const UChar* s1, const UChar* s2, int n));
extern void onig_scan_env_set_error_string P_((ScanEnv* env, int ecode, UChar* arg, UChar* arg_end));
extern int onig_scan_unsigned_number P_((UChar** src, const UChar* end, OnigEncoding enc));
extern void onig_reduce_nested_qualifier P_((Node* pnode, Node* cnode));
extern void onig_node_conv_to_str_node P_((Node* node, int raw));
extern int onig_node_str_cat P_((Node* node, const UChar* s, const UChar* end));
extern void onig_node_free P_((Node* node));
extern Node* onig_node_new_effect P_((int type));
extern Node* onig_node_new_anchor P_((int type));
extern Node* onig_node_new_str P_((const UChar* s, const UChar* end));
extern Node* onig_node_new_list P_((Node* left, Node* right));
extern void onig_node_str_clear P_((Node* node));
extern int onig_free_node_list(void);
extern int onig_names_free P_((regex_t* reg));
extern int onig_parse_make_tree P_((Node** root, const UChar* pattern, const UChar* end, regex_t* reg, ScanEnv* env));
#ifdef ONIG_DEBUG
#ifdef USE_NAMED_GROUP
extern int onig_print_names(FILE*, regex_t*);
#endif
#endif
#endif /* REGPARSE_H */
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