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53 lines
1.0 KiB
C
53 lines
1.0 KiB
C
#ifndef __QUERY_H__
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#define __QUERY_H__
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/*
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#define BS_DEBUG
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*/
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/*
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* item in polish notation with back link
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* to left operand
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*/
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typedef struct ITEM
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{
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int2 type;
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int2 left;
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int4 val;
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/* user-friendly value */
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uint16 distance;
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uint16 length;
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} ITEM;
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/*
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*Storage:
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* (len)(size)(array of ITEM)(array of operand in user-friendly form)
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*/
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typedef struct
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{
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int4 len;
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int4 size;
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char data[1];
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} QUERYTYPE;
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#define HDRSIZEQT ( 2*sizeof(int4) )
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#define COMPUTESIZE(size,lenofoperand) ( HDRSIZEQT + size * sizeof(ITEM) + lenofoperand )
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#define GETQUERY(x) (ITEM*)( (char*)(x)+HDRSIZEQT )
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#define GETOPERAND(x) ( (char*)GETQUERY(x) + ((QUERYTYPE*)x)->size * sizeof(ITEM) )
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#define ISOPERATOR(x) ( (x)=='!' || (x)=='&' || (x)=='|' || (x)=='(' || (x)==')' )
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#define END 0
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#define ERR 1
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#define VAL 2
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#define OPR 3
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#define OPEN 4
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#define CLOSE 5
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#define VALTRUE 6 /* for stop words */
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#define VALFALSE 7
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bool execute(ITEM * curitem, void *checkval,
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bool calcnot, bool (*chkcond) (void *checkval, ITEM * val));
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#endif
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