77 lines
2.8 KiB
C++
77 lines
2.8 KiB
C++
/*
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* Copyright (C) 2013, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef LATINIME_VER4_PATRICIA_TRIE_WRITING_HELPER_H
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#define LATINIME_VER4_PATRICIA_TRIE_WRITING_HELPER_H
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#include "defines.h"
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#include "dictionary/structure/pt_common/dynamic_pt_gc_event_listeners.h"
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#include "dictionary/structure/v4/content/terminal_position_lookup_table.h"
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#include "dictionary/utils/entry_counters.h"
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namespace latinime {
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class HeaderPolicy;
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class Ver4DictBuffers;
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class Ver4PatriciaTrieNodeReader;
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class Ver4PatriciaTrieNodeWriter;
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class Ver4PatriciaTrieWritingHelper {
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public:
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Ver4PatriciaTrieWritingHelper(Ver4DictBuffers *const buffers)
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: mBuffers(buffers) {}
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bool writeToDictFile(const char *const dictDirPath, const EntryCounts &entryCounts) const;
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// This method cannot be const because the original dictionary buffer will be updated to detect
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// useless PtNodes during GC.
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bool writeToDictFileWithGC(const int rootPtNodeArrayPos, const char *const dictDirPath);
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(Ver4PatriciaTrieWritingHelper);
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class TraversePolicyToUpdateAllPtNodeFlagsAndTerminalIds
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: public DynamicPtReadingHelper::TraversingEventListener {
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public:
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TraversePolicyToUpdateAllPtNodeFlagsAndTerminalIds(
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Ver4PatriciaTrieNodeWriter *const ptNodeWriter,
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const TerminalPositionLookupTable::TerminalIdMap *const terminalIdMap)
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: mPtNodeWriter(ptNodeWriter), mTerminalIdMap(terminalIdMap) {}
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bool onAscend() { return true; }
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bool onDescend(const int ptNodeArrayPos) { return true; }
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bool onReadingPtNodeArrayTail() { return true; }
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bool onVisitingPtNode(const PtNodeParams *const ptNodeParams);
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(TraversePolicyToUpdateAllPtNodeFlagsAndTerminalIds);
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Ver4PatriciaTrieNodeWriter *const mPtNodeWriter;
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const TerminalPositionLookupTable::TerminalIdMap *const mTerminalIdMap;
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};
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bool runGC(const int rootPtNodeArrayPos, const HeaderPolicy *const headerPolicy,
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Ver4DictBuffers *const buffersToWrite, MutableEntryCounters *const outEntryCounters);
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Ver4DictBuffers *const mBuffers;
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};
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} // namespace latinime
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#endif /* LATINIME_VER4_PATRICIA_TRIE_WRITING_HELPER_H */
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