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  • Committer: alvherre
  • Date: 2005-12-16 21:24:52 UTC
  • Revision ID: svn-v4:db760fc0-0f08-0410-9d63-cc6633f64896:trunk:1
Initial import of the REL8_0_3 sources from the Pgsql CVS repository.

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contrib/tsearch/query.h
 
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#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