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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 {
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
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