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tango-maat/inc/bool_matcher.h

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/*
*
* Copyright (c) 2018
* String Algorithms Research Group
* Institute of Information Engineering, Chinese Academy of Sciences (IIE-CAS)
* National Engineering Laboratory for Information Security Technologies (NELIST)
* All rights reserved
*
* Written by: LIU YANBING (liuyanbing@iie.ac.cn)
* Last modification: 2021-06-12
*
* This code is the exclusive and proprietary property of IIE-CAS and NELIST.
* Usage for direct or indirect commercial advantage is not allowed without
* written permission from the authors.
*
*/
#ifndef INCLUDE_BOOL_MATCHER_H
#define INCLUDE_BOOL_MATCHER_H
#include <stddef.h>
#ifdef __cplusplus
extern "C"
{
#endif
#define MAX_ITEMS_PER_BOOL_EXPR 8
/* not_flag=0表示布尔项item_id必须出现not_flag=1表示布尔项item_id不能出现 */
struct bool_item
{
unsigned long long item_id;
unsigned char not_flag;
};
/* At least one item's not_flag should be 0. */
struct bool_expr
{
unsigned long long expr_id;
void * user_tag;
size_t item_num;
struct bool_item items[MAX_ITEMS_PER_BOOL_EXPR];
};
struct bool_expr_match
{
unsigned long long expr_id;
void * user_tag;
};
struct bool_matcher;
struct bool_matcher * bool_matcher_new(struct bool_expr * exprs, size_t expr_num, unsigned int max_thread_num, size_t * mem_size);
/* Returned results are sorted by expr_id in descending order. */
//Input item_ids MUST be ASCENDING order and NO duplication.
int bool_matcher_match(struct bool_matcher * matcher, unsigned int thread_id, unsigned long long * item_ids, size_t item_num, struct bool_expr_match * results, size_t n_result);
void bool_matcher_free(struct bool_matcher * matcher);
#ifdef __cplusplus
}
#endif
#endif