regis.h

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/*-------------------------------------------------------------------------
 *
 * regis.h
 *
 * Declarations for fast regex subset, used by ISpell
 *
 * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
 *
 * src/include/tsearch/dicts/regis.h
 *
 *-------------------------------------------------------------------------
 */
 
#ifndef __REGIS_H__
#define __REGIS_H__
 
typedef struct RegisNode
{
    uint32
                type:2,
                len:16,
                unused:14;
    struct RegisNode *next;
    unsigned char data[FLEXIBLE_ARRAY_MEMBER];
} RegisNode;
 
#define  RNHDRSZ    (offsetof(RegisNode,data))
 
#define RSF_ONEOF   1
#define RSF_NONEOF  2
 
typedef struct Regis
{
    RegisNode  *node;
    uint32
                issuffix:1,
                nchar:16,
                unused:15;
} Regis;
 
extern bool RS_isRegis(const char *str);
 
extern void RS_compile(Regis *r, bool issuffix, const char *str);
extern void RS_free(Regis *r);
 
/*returns true if matches */
extern bool RS_execute(Regis *r, char *str);
 
#endif