80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _TD_INDEX_FST_REGEX_H_
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#define _TD_INDEX_FST_REGEX_H_
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//#include "indexFstDfa.h"
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#include "taos.h"
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#include "tarray.h"
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#include "tchecksum.h"
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#include "thash.h"
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#include "tlog.h"
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#include "tutil.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum { MATCH, JUMP, SPLIT, RANGE } InstType;
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typedef struct MatchValue {
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#ifdef WINDOWS
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size_t avoidCompilationErrors;
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#endif
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} MatchValue;
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typedef struct JumpValue {
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uint32_t step;
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} JumpValue;
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typedef struct SplitValue {
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uint32_t len1;
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uint32_t len2;
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} SplitValue;
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typedef struct RangeValue {
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uint8_t start;
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uint8_t end;
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} RangeValue;
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typedef struct {
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InstType ty;
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union {
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MatchValue mv;
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JumpValue jv;
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SplitValue sv;
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RangeValue rv;
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};
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} Inst;
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typedef struct {
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char *orig;
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void *dfa;
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} FstRegex;
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FstRegex *regexCreate(const char *str);
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void regexDestroy(FstRegex *regex);
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uint32_t regexAutomStart(FstRegex *regex);
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bool regexAutomIsMatch(FstRegex *regex, uint32_t state);
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bool regexAutomCanMatch(FstRegex *regex, uint32_t state, bool null);
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bool regexAutomAccept(FstRegex *regex, uint32_t state, uint8_t byte, uint32_t *result);
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#ifdef __cplusplus
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}
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#endif
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#endif
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