58 lines
1.8 KiB
C
58 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 __INDEX_FST_NODE_H__
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#define __INDEX_FST_NODE_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "index_fst_util.h"
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#include "index_fst_counting_writer.h"
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#define FST_BUILDER_NODE_IS_FINAL(bn) (bn->isFinal)
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#define FST_BUILDER_NODE_TRANS_ISEMPTY(bn) (taosArrayGetSize(bn->trans) == 0)
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#define FST_BUILDER_NODE_FINALOUTPUT_ISZERO(bn) (bn->finalOutput == 0)
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typedef struct FstTransition {
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uint8_t inp; //The byte input associated with this transition.
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Output out; //The output associated with this transition
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CompiledAddr addr; //The address of the node that this transition points to
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} FstTransition;
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typedef struct FstBuilderNode {
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bool isFinal;
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Output finalOutput;
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SArray *trans; // <FstTransition>
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} FstBuilderNode;
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FstBuilderNode *fstBuilderNodeDefault();
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FstBuilderNode *fstBuilderNodeClone(FstBuilderNode *src);
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void fstBuilderNodeCloneFrom(FstBuilderNode *dst, FstBuilderNode *src);
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//bool fstBuilderNodeCompileTo(FstBuilderNode *b, FstCountingWriter *wrt, CompiledAddr lastAddr, CompiledAddr startAddr);
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bool fstBuilderNodeEqual(FstBuilderNode *n1, FstBuilderNode *n2);
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void fstBuilderNodeDestroy(FstBuilderNode *node);
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#ifdef __cplusplus
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}
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#endif
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#endif
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