1 /* 2 * Copyright (C) 2014, 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 #include "dictionary/structure/v2/ver2_pt_node_array_reader.h" 18 19 #include "dictionary/structure/pt_common/patricia_trie_reading_utils.h" 20 21 namespace latinime { 22 23 bool Ver2PtNodeArrayReader::readPtNodeArrayInfoAndReturnIfValid(const int ptNodeArrayPos, 24 int *const outPtNodeCount, int *const outFirstPtNodePos) const { 25 if (ptNodeArrayPos < 0 || ptNodeArrayPos >= static_cast<int>(mBuffer.size())) { 26 // Reading invalid position because of a bug or a broken dictionary. 27 AKLOGE("Reading PtNode array info from invalid dictionary position: %d, dict size: %zd", 28 ptNodeArrayPos, mBuffer.size()); 29 ASSERT(false); 30 return false; 31 } 32 int readingPos = ptNodeArrayPos; 33 const int ptNodeCountInArray = PatriciaTrieReadingUtils::getPtNodeArraySizeAndAdvancePosition( 34 mBuffer.data(), &readingPos); 35 *outPtNodeCount = ptNodeCountInArray; 36 *outFirstPtNodePos = readingPos; 37 return true; 38 } 39 40 bool Ver2PtNodeArrayReader::readForwardLinkAndReturnIfValid(const int forwordLinkPos, 41 int *const outNextPtNodeArrayPos) const { 42 if (forwordLinkPos < 0 || forwordLinkPos >= static_cast<int>(mBuffer.size())) { 43 // Reading invalid position because of bug or broken dictionary. 44 AKLOGE("Reading forward link from invalid dictionary position: %d, dict size: %zd", 45 forwordLinkPos, mBuffer.size()); 46 ASSERT(false); 47 return false; 48 } 49 // Ver2 dicts don't have forward links. 50 *outNextPtNodeArrayPos = NOT_A_DICT_POS; 51 return true; 52 } 53 54 } // namespace latinime 55
