mirror of
https://github.com/postgres/postgres.git
synced 2025-11-03 09:13:20 +03:00
53 lines
1.0 KiB
C
53 lines
1.0 KiB
C
#ifndef __QUERY_H__
|
|
#define __QUERY_H__
|
|
/*
|
|
#define BS_DEBUG
|
|
*/
|
|
|
|
|
|
/*
|
|
* item in polish notation with back link
|
|
* to left operand
|
|
*/
|
|
typedef struct ITEM
|
|
{
|
|
int2 type;
|
|
int2 left;
|
|
int4 val;
|
|
/* user-friendly value */
|
|
uint16 distance;
|
|
uint16 length;
|
|
} 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 execute(ITEM * curitem, void *checkval,
|
|
bool calcnot, bool (*chkcond) (void *checkval, ITEM * val));
|
|
|
|
#endif
|