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tsearch2 module

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This commit is contained in:
Teodor Sigaev
2003-07-21 10:27:44 +00:00
parent a605382670
commit b88605337e
63 changed files with 16908 additions and 0 deletions
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55
contrib/tsearch2/query.h Normal file
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#ifndef __QUERY_H__
#define __QUERY_H__
/*
#define BS_DEBUG
*/
/*
* item in polish notation with back link
* to left operand
*/
typedef struct ITEM
{
int8 type;
int8 weight;
int2 left;
int4 val;
/* user-friendly value, must correlate with WordEntry */
uint32
unused:1,
length:11,
distance:20;
} ITEM;
/*
*Storage:
* (len)(size)(array of ITEM)(array of operand in user-friendly form)
*/
typedef struct
{
int4 len;
int4 size;
char data[1];
} QUERYTYPE;
#define HDRSIZEQT ( 2*sizeof(int4) )
#define COMPUTESIZE(size,lenofoperand) ( HDRSIZEQT + size * sizeof(ITEM) + lenofoperand )
#define GETQUERY(x) (ITEM*)( (char*)(x)+HDRSIZEQT )
#define GETOPERAND(x) ( (char*)GETQUERY(x) + ((QUERYTYPE*)x)->size * sizeof(ITEM) )
#define ISOPERATOR(x) ( (x)=='!' || (x)=='&' || (x)=='|' || (x)=='(' || (x)==')' )
#define END 0
#define ERR 1
#define VAL 2
#define OPR 3
#define OPEN 4
#define CLOSE 5
#define VALTRUE 6 /* for stop words */
#define VALFALSE 7
bool TS_execute(ITEM * curitem, void *checkval,
bool calcnot, bool (*chkcond) (void *checkval, ITEM * val));
#endif