1 /* 2 * Copyright (C) 2013, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef LATINIME_VER4_PATRICIA_TRIE_NODE_READER_H 18 #define LATINIME_VER4_PATRICIA_TRIE_NODE_READER_H 19 20 #include "defines.h" 21 #include "dictionary/structure/pt_common/pt_node_params.h" 22 #include "dictionary/structure/pt_common/pt_node_reader.h" 23 24 namespace latinime { 25 26 class BufferWithExtendableBuffer; 27 class HeaderPolicy; 28 class LanguageModelDictContent; 29 30 /* 31 * This class is used for helping to read nodes of ver4 patricia trie. This class handles moved 32 * node and reads node attributes. 33 */ 34 class Ver4PatriciaTrieNodeReader : public PtNodeReader { 35 public: Ver4PatriciaTrieNodeReader(const BufferWithExtendableBuffer * const buffer)36 explicit Ver4PatriciaTrieNodeReader(const BufferWithExtendableBuffer *const buffer) 37 : mBuffer(buffer) {} 38 ~Ver4PatriciaTrieNodeReader()39 ~Ver4PatriciaTrieNodeReader() {} 40 fetchPtNodeParamsInBufferFromPtNodePos(const int ptNodePos)41 virtual const PtNodeParams fetchPtNodeParamsInBufferFromPtNodePos(const int ptNodePos) const { 42 return fetchPtNodeInfoFromBufferAndProcessMovedPtNode(ptNodePos, 43 NOT_A_DICT_POS /* siblingNodePos */); 44 } 45 46 private: 47 DISALLOW_COPY_AND_ASSIGN(Ver4PatriciaTrieNodeReader); 48 49 const BufferWithExtendableBuffer *const mBuffer; 50 51 const PtNodeParams fetchPtNodeInfoFromBufferAndProcessMovedPtNode(const int ptNodePos, 52 const int siblingNodePos) const; 53 }; 54 } // namespace latinime 55 #endif /* LATINIME_VER4_PATRICIA_TRIE_NODE_READER_H */ 56