#ifndef REGPARSE_H
#define REGPARSE_H
/**********************************************************************
regparse.h - Oniguruma (regular expression library)
**********************************************************************/
/*-
* Copyright (c) 2002-2017 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 */
typedef enum {
NODE_STR = 0,
NODE_CCLASS = 1,
NODE_CTYPE = 2,
NODE_BREF = 3,
NODE_QUANT = 4,
NODE_ENCLOSURE = 5,
NODE_ANCHOR = 6,
NODE_LIST = 7,
NODE_ALT = 8,
NODE_CALL = 9
} NodeType;
/* node type bit */
#define NODE_TYPE2BIT(type) (1<<(type))
#define BIT_NODE_STR NODE_TYPE2BIT(NODE_STR)
#define BIT_NODE_CCLASS NODE_TYPE2BIT(NODE_CCLASS)
#define BIT_NODE_CTYPE NODE_TYPE2BIT(NODE_CTYPE)
#define BIT_NODE_BREF NODE_TYPE2BIT(NODE_BREF)
#define BIT_NODE_QUANT NODE_TYPE2BIT(NODE_QUANT)
#define BIT_NODE_ENCLOSURE NODE_TYPE2BIT(NODE_ENCLOSURE)
#define BIT_NODE_ANCHOR NODE_TYPE2BIT(NODE_ANCHOR)
#define BIT_NODE_LIST NODE_TYPE2BIT(NODE_LIST)
#define BIT_NODE_ALT NODE_TYPE2BIT(NODE_ALT)
#define BIT_NODE_CALL NODE_TYPE2BIT(NODE_CALL)
#define NODE_IS_SIMPLE_TYPE(node) \
((NODE_TYPE2BIT(NODE_TYPE(node)) & \
(BIT_NODE_STR | BIT_NODE_CCLASS | BIT_NODE_CTYPE | BIT_NODE_BREF)) != 0)
#define NODE_TYPE(node) ((node)->u.base.node_type)
#define SET_NODE_TYPE(node, ntype) (node)->u.base.node_type = (ntype)
#define STR_(node) (&((node)->u.str))
#define CCLASS_(node) (&((node)->u.cclass))
#define CTYPE_(node) (&((node)->u.ctype))
#define BREF_(node) (&((node)->u.bref))
#define QUANT_(node) (&((node)->u.quant))
#define ENCLOSURE_(node) (&((node)->u.enclosure))
#define ANCHOR_(node) (&((node)->u.anchor))
#define CONS_(node) (&((node)->u.cons))
#define CALL_(node) (&((node)->u.call))
#define NODE_CAR(node) (CONS_(node)->car)
#define NODE_CDR(node) (CONS_(node)->cdr)
#define CTYPE_ANYCHAR -1
#define NODE_IS_ANYCHAR(node) \
(NODE_TYPE(node) == NODE_CTYPE && CTYPE_(node)->ctype == CTYPE_ANYCHAR)
#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 ENCLOSURE_MEMORY (1<<0)
#define ENCLOSURE_OPTION (1<<1)
#define ENCLOSURE_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 STRING_RAW (1<<0) /* by backslashed number */
#define STRING_AMBIG (1<<1)
#define STRING_DONT_GET_OPT_INFO (1<<2)
#define NSTRING_LEN(node) ((node)->u.str.end - (node)->u.str.s)
#define NSTRING_SET_RAW(node) (node)->u.str.flag |= STRING_RAW
#define NSTRING_CLEAR_RAW(node) (node)->u.str.flag &= ~STRING_RAW
#define NSTRING_SET_AMBIG(node) (node)->u.str.flag |= STRING_AMBIG
#define NSTRING_SET_DONT_GET_OPT_INFO(node) \
(node)->u.str.flag |= STRING_DONT_GET_OPT_INFO
#define NSTRING_IS_RAW(node) (((node)->u.str.flag & STRING_RAW) != 0)
#define NSTRING_IS_AMBIG(node) (((node)->u.str.flag & STRING_AMBIG) != 0)
#define NSTRING_IS_DONT_GET_OPT_INFO(node) \
(((node)->u.str.flag & STRING_DONT_GET_OPT_INFO) != 0)
#define BACKREFS_P(br) \
(IS_NOT_NULL((br)->back_dynamic) ? (br)->back_dynamic : (br)->back_static);
#define QUANT_BODY_IS_NOT_EMPTY 0
#define QUANT_BODY_IS_EMPTY 1
#define QUANT_BODY_IS_EMPTY_MEM 2
#define QUANT_BODY_IS_EMPTY_REC 3
/* 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_STOP_BT_SIMPLE_REPEAT (1<<5)
#define NST_RECURSION (1<<6)
#define NST_CALLED (1<<7)
#define NST_ADDR_FIXED (1<<8)
#define NST_NAMED_GROUP (1<<9)
#define NST_IN_REAL_REPEAT (1<<10) /* STK_REPEAT is nested in stack. */
#define NST_IN_ZERO_REPEAT (1<<11) /* (....){0} */
#define NST_IN_MULTI_ENTRY (1<<12)
#define NST_NEST_LEVEL (1<<13)
#define NST_BY_NUMBER (1<<14) /* {n,m} */
#define NST_BY_NAME (1<<15) /* backref by name */
#define NST_BACKREF (1<<16)
#define NODE_STATUS(node) (((Node* )node)->u.base.status)
#define NODE_STATUS_ADD(node,f) (NODE_STATUS(node) |= (f))
#define NODE_STATUS_REMOVE(node,f) (NODE_STATUS(node) &= ~(f))
#define NODE_IS_BY_NUMBER(node) ((NODE_STATUS(node) & NST_BY_NUMBER) != 0)
#define NODE_IS_IN_REAL_REPEAT(node) ((NODE_STATUS(node) & NST_IN_REAL_REPEAT) != 0)
#define NODE_IS_CALLED(node) ((NODE_STATUS(node) & NST_CALLED) != 0)
#define NODE_IS_IN_MULTI_ENTRY(node) ((NODE_STATUS(node) & NST_IN_MULTI_ENTRY) != 0)
#define NODE_IS_RECURSION(node) ((NODE_STATUS(node) & NST_RECURSION) != 0)
#define NODE_IS_IN_ZERO_REPEAT(node) ((NODE_STATUS(node) & NST_IN_ZERO_REPEAT) != 0)
#define NODE_IS_NAMED_GROUP(node) ((NODE_STATUS(node) & NST_NAMED_GROUP) != 0)
#define NODE_IS_ADDR_FIXED(node) ((NODE_STATUS(node) & NST_ADDR_FIXED) != 0)
#define NODE_IS_CLEN_FIXED(node) ((NODE_STATUS(node) & NST_CLEN_FIXED) != 0)
#define NODE_IS_MIN_FIXED(node) ((NODE_STATUS(node) & NST_MIN_FIXED) != 0)
#define NODE_IS_MAX_FIXED(node) ((NODE_STATUS(node) & NST_MAX_FIXED) != 0)
#define NODE_IS_MARK1(node) ((NODE_STATUS(node) & NST_MARK1) != 0)
#define NODE_IS_MARK2(node) ((NODE_STATUS(node) & NST_MARK2) != 0)
#define NODE_IS_NEST_LEVEL(node) ((NODE_STATUS(node) & NST_NEST_LEVEL) != 0)
#define NODE_IS_BY_NAME(node) ((NODE_STATUS(node) & NST_BY_NAME) != 0)
#define NODE_IS_BACKREF(node) ((NODE_STATUS(node) & NST_BACKREF) != 0)
#define NODE_IS_STOP_BT_SIMPLE_REPEAT(node) \
((NODE_STATUS(node) & NST_STOP_BT_SIMPLE_REPEAT) != 0)
#define NODE_BODY(node) ((node)->u.base.body)
#define NODE_QUANT_BODY(node) ((node)->body)
#define NODE_ENCLOSURE_BODY(node) ((node)->body)
#define NODE_CALL_BODY(node) ((node)->body)
#define NODE_ANCHOR_BODY(node) ((node)->body)
#define CALLNODE_REFNUM_UNDEF -1
typedef struct {
NodeType node_type;
int status;
UChar* s;
UChar* end;
unsigned int flag;
int capa; /* (allocated size - 1) or 0: use buf[] */
UChar buf[NODE_STR_BUF_SIZE];
} StrNode;
typedef struct {
NodeType node_type;
int status;
unsigned int flags;
BitSet bs;
BBuf* mbuf; /* multi-byte info or NULL */
} CClassNode;
typedef struct {
NodeType node_type;
int status;
struct _Node* body;
int lower;
int upper;
int greedy;
int body_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
} QuantNode;
typedef struct {
NodeType node_type;
int status;
struct _Node* body;
int type;
union {
struct {
int regnum;
AbsAddrType called_addr;
int entry_count;
int called_state;
} m;
struct {
OnigOptionType option;
} o;
};
/* for multiple call reference */
OnigLen min_len; /* min length (byte) */
OnigLen max_len; /* max length (byte) */
int char_len; /* character length */
int opt_count; /* referenced count in optimize_node_left() */
} EnclosureNode;
#ifdef USE_SUBEXP_CALL
typedef struct {
int offset;
struct _Node* target;
} UnsetAddr;
typedef struct {
int num;
int alloc;
UnsetAddr* us;
} UnsetAddrList;
typedef struct {
NodeType node_type;
int status;
struct _Node* body; /* to EnclosureNode : ENCLOSURE_MEMORY */
int by_number;
int group_num;
UChar* name;
UChar* name_end;
int entry_count;
} CallNode;
#endif
typedef struct {
NodeType node_type;
int status;
int back_num;
int back_static[NODE_BACKREFS_SIZE];
int* back_dynamic;
int nest_level;
} BRefNode;
typedef struct {
NodeType node_type;
int status;
struct _Node* body;
int type;
int char_len;
} AnchorNode;
typedef struct {
NodeType node_type;
int status;
struct _Node* car;
struct _Node* cdr;
} ConsAltNode;
typedef struct {
NodeType node_type;
int status;
int ctype;
int not;
} CtypeNode;
typedef struct _Node {
union {
struct {
NodeType node_type;
int status;
struct _Node* body;
} base;
StrNode str;
CClassNode cclass;
QuantNode quant;
EnclosureNode enclosure;
BRefNode bref;
AnchorNode anchor;
ConsAltNode cons;
CtypeNode ctype;
#ifdef USE_SUBEXP_CALL
CallNode call;
#endif
} u;
} Node;
#define NULL_NODE ((Node* )0)
#define SCANENV_MEMENV_SIZE 8
#define SCANENV_MEMENV(senv) \
(IS_NOT_NULL((senv)->mem_env_dynamic) ? \
(senv)->mem_env_dynamic : (senv)->mem_env_static)
typedef struct {
Node* node;
#if 0
int in;
int recursion;
#endif
} MemEnv;
typedef struct {
OnigOptionType option;
OnigCaseFoldType case_fold_flag;
OnigEncoding enc;
OnigSyntaxType* syntax;
MemStatusType capture_history;
MemStatusType bt_mem_start;
MemStatusType bt_mem_end;
MemStatusType 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;
int has_call_zero;
#endif
int num_mem;
#ifdef USE_NAMED_GROUP
int num_named;
#endif
int mem_alloc;
MemEnv mem_env_static[SCANENV_MEMENV_SIZE];
MemEnv* mem_env_dynamic;
#ifdef USE_COMBINATION_EXPLOSION_CHECK
int num_comb_exp_check;
int comb_exp_max_regnum;
int curr_max_regnum;
int has_recursion;
#endif
unsigned int parse_depth;
} 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_strcpy P_((UChar* dest, const UChar* src, const UChar* end));
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_quantifier 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 int onig_node_str_set P_((Node* node, const UChar* s, const UChar* end));
extern void onig_node_free P_((Node* node));
extern Node* onig_node_new_enclosure 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 Node* onig_node_list_add P_((Node* list, Node* x));
extern Node* onig_node_new_alt P_((Node* left, Node* right));
extern void onig_node_str_clear P_((Node* node));
extern int onig_names_free P_((regex_t* reg));
extern int onig_parse_tree P_((Node** root, const UChar* pattern, const UChar* end, regex_t* reg, ScanEnv* env));
extern int onig_free_shared_cclass_table P_((void));
extern int onig_is_code_in_cc P_((OnigEncoding enc, OnigCodePoint code, CClassNode* cc));
#ifdef ONIG_DEBUG
#ifdef USE_NAMED_GROUP
extern int onig_print_names(FILE*, regex_t*);
#endif
#endif
#endif /* REGPARSE_H */