#ifndef __TXTIDX_STAT_H__
#define __TXTIDX_STAT_H__

#include "postgres.h"

#include "access/gist.h"
#include "access/itup.h"
#include "utils/builtins.h"
#include "storage/bufpage.h"
#include "tsvector.h"

typedef struct
{
	uint32		len;
	uint32		pos;
	uint32		ndoc;
	uint32		nentry;
}	StatEntry;

typedef struct
{
	int32		vl_len_;		/* varlena header (do not touch directly!) */
	int4		size;
	int4		weight;
	char		data[1];
}	tsstat;

#define STATHDRSIZE (sizeof(int4) * 4)
#define CALCSTATSIZE(x, lenstr) ( (x) * sizeof(StatEntry) + STATHDRSIZE + (lenstr) )
#define STATPTR(x)	( (StatEntry*) ( (char*)(x) + STATHDRSIZE ) )
#define STATSTRPTR(x)	( (char*)(x) + STATHDRSIZE + ( sizeof(StatEntry) * ((tsvector*)(x))->size ) )
#define STATSTRSIZE(x)	( VARSIZE((tsvector*)(x)) - STATHDRSIZE - ( sizeof(StatEntry) * ((tsvector*)(x))->size ) )

#endif