/*
 * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
 *
 * This program is free software: you can use, redistribute, and/or modify
 * it under the terms of the GNU Affero General Public License, version 3
 * or later ("AGPL"), as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef __FST_REGISTRY_H__
#define __FST_REGISTRY_H__

#ifdef __cplusplus
extern "C" {
#endif

#include "index_fst_util.h"
#include "tarray.h"
#include "index_fst_node.h"

typedef struct FstRegistryCell {
  CompiledAddr addr; 
  FstBuilderNode *node;    
} FstRegistryCell;

#define FST_REGISTRY_CELL_IS_EMPTY(cell) (cell->addr == NONE_ADDRESS)
#define FST_REGISTRY_CELL_INSERT(cell, tAddr) do {cell->addr = tAddr;} while(0)


//typedef struct FstRegistryCache {
//  SArray *cells;  
//  uint32_t start;
//  uint32_t end;
//} FstRegistryCache;

typedef enum {FOUND, NOTFOUND, REJECTED} FstRegistryEntryState;

typedef struct FstRegistryEntry {
  FstRegistryEntryState state;
  CompiledAddr addr; 
  FstRegistryCell *cell; 
} FstRegistryEntry; 



// Registry relation function 
typedef struct FstRegistry {
   SArray *table;  //<FstRegistryCell> 
   uint64_t tableSize; // num of rows
   uint64_t mruSize;   // num of columns
} FstRegistry;      

// 
FstRegistry* fstRegistryCreate(uint64_t tableSize, uint64_t mruSize);
void fstRegistryDestroy(FstRegistry *registry);


FstRegistryEntry* fstRegistryGetEntry(FstRegistry *registry, FstBuilderNode *bNode);
void fstRegistryEntryDestroy(FstRegistryEntry *entry);

#ifdef __cplusplus
}
#endif

#endif