| /* |
| * Copyright (C) 2013, The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef LATINIME_DYNAMIC_PT_UPDATING_HELPER_H |
| #define LATINIME_DYNAMIC_PT_UPDATING_HELPER_H |
| |
| #include "defines.h" |
| #include "dictionary/structure/pt_common/pt_node_params.h" |
| #include "utils/int_array_view.h" |
| |
| namespace latinime { |
| |
| class NgramProperty; |
| class BufferWithExtendableBuffer; |
| class DynamicPtReadingHelper; |
| class PtNodeReader; |
| class PtNodeWriter; |
| class UnigramProperty; |
| |
| class DynamicPtUpdatingHelper { |
| public: |
| DynamicPtUpdatingHelper(BufferWithExtendableBuffer *const buffer, |
| const PtNodeReader *const ptNodeReader, PtNodeWriter *const ptNodeWriter) |
| : mBuffer(buffer), mPtNodeReader(ptNodeReader), mPtNodeWriter(ptNodeWriter) {} |
| |
| ~DynamicPtUpdatingHelper() {} |
| |
| // Add a word to the dictionary. If the word already exists, update the probability. |
| bool addUnigramWord(DynamicPtReadingHelper *const readingHelper, |
| const CodePointArrayView wordCodePoints, const UnigramProperty *const unigramProperty, |
| bool *const outAddedNewUnigram); |
| |
| // TODO: Remove after stopping supporting v402. |
| // Add an n-gram entry. |
| bool addNgramEntry(const PtNodePosArrayView prevWordsPtNodePos, const int wordPos, |
| const NgramProperty *const ngramProperty, bool *const outAddedNewEntry); |
| |
| // TODO: Remove after stopping supporting v402. |
| // Remove an n-gram entry. |
| bool removeNgramEntry(const PtNodePosArrayView prevWordsPtNodePos, const int wordPos); |
| |
| // Add a shortcut target. |
| bool addShortcutTarget(const int wordPos, const CodePointArrayView targetCodePoints, |
| const int shortcutProbability); |
| |
| private: |
| DISALLOW_IMPLICIT_CONSTRUCTORS(DynamicPtUpdatingHelper); |
| |
| static const int CHILDREN_POSITION_FIELD_SIZE; |
| |
| BufferWithExtendableBuffer *const mBuffer; |
| const PtNodeReader *const mPtNodeReader; |
| PtNodeWriter *const mPtNodeWriter; |
| |
| bool createAndInsertNodeIntoPtNodeArray(const int parentPos, |
| const CodePointArrayView ptNodeCodePoints, const UnigramProperty *const unigramProperty, |
| int *const forwardLinkFieldPos); |
| |
| bool setPtNodeProbability(const PtNodeParams *const originalPtNodeParams, |
| const UnigramProperty *const unigramProperty, bool *const outAddedNewUnigram); |
| |
| bool createChildrenPtNodeArrayAndAChildPtNode(const PtNodeParams *const parentPtNodeParams, |
| const UnigramProperty *const unigramProperty, |
| const CodePointArrayView remainingCodePoints); |
| |
| bool createNewPtNodeArrayWithAChildPtNode(const int parentPos, |
| const CodePointArrayView ptNodeCodePoints, |
| const UnigramProperty *const unigramProperty); |
| |
| bool reallocatePtNodeAndAddNewPtNodes(const PtNodeParams *const reallocatingPtNodeParams, |
| const size_t overlappingCodePointCount, const UnigramProperty *const unigramProperty, |
| const CodePointArrayView newPtNodeCodePoints); |
| |
| const PtNodeParams getUpdatedPtNodeParams(const PtNodeParams *const originalPtNodeParams, |
| const bool isNotAWord, const bool isPossiblyOffensive, const bool isTerminal, |
| const int parentPos, const CodePointArrayView codePoints, const int probability) const; |
| |
| const PtNodeParams getPtNodeParamsForNewPtNode(const bool isNotAWord, |
| const bool isPossiblyOffensive, const bool isTerminal, const int parentPos, |
| const CodePointArrayView codePoints, const int probability) const; |
| }; |
| } // namespace latinime |
| #endif /* LATINIME_DYNAMIC_PATRICIA_TRIE_UPDATING_HELPER_H */ |