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_SPARSE_TABLE_H 18 #define LATINIME_SPARSE_TABLE_H 19 20 #include <cstdint> 21 22 #include "defines.h" 23 #include "dictionary/utils/buffer_with_extendable_buffer.h" 24 25 namespace latinime { 26 27 // TODO: Support multiple content buffers. 28 class SparseTable { 29 public: SparseTable(BufferWithExtendableBuffer * const indexTableBuffer,BufferWithExtendableBuffer * const contentTableBuffer,const int blockSize,const int dataSize)30 SparseTable(BufferWithExtendableBuffer *const indexTableBuffer, 31 BufferWithExtendableBuffer *const contentTableBuffer, const int blockSize, 32 const int dataSize) 33 : mIndexTableBuffer(indexTableBuffer), mContentTableBuffer(contentTableBuffer), 34 mBlockSize(blockSize), mDataSize(dataSize) {} 35 36 bool contains(const int id) const; 37 38 uint32_t get(const int id) const; 39 40 bool set(const int id, const uint32_t value); 41 42 private: 43 DISALLOW_IMPLICIT_CONSTRUCTORS(SparseTable); 44 45 int getIndexFromContentTablePos(const int contentTablePos) const; 46 47 int getPosInIndexTable(const int id) const; 48 49 int getPosInContentTable(const int id, const int index) const; 50 51 static const int NOT_EXIST; 52 static const int INDEX_SIZE; 53 54 BufferWithExtendableBuffer *const mIndexTableBuffer; 55 BufferWithExtendableBuffer *const mContentTableBuffer; 56 const int mBlockSize; 57 const int mDataSize; 58 }; 59 } // namespace latinime 60 #endif /* LATINIME_SPARSE_TABLE_H */ 61