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 /* 18 * !!!!! DO NOT EDIT THIS FILE !!!!! 19 * 20 * This file was generated from 21 * suggest/policyimpl/dictionary/structure/v4/ver4_pt_node_array_reader.cpp 22 */ 23 24 #include "suggest/policyimpl/dictionary/structure/backward/v402/ver4_pt_node_array_reader.h" 25 26 #include "suggest/policyimpl/dictionary/structure/pt_common/dynamic_pt_reading_utils.h" 27 #include "suggest/policyimpl/dictionary/structure/pt_common/patricia_trie_reading_utils.h" 28 #include "suggest/policyimpl/dictionary/utils/buffer_with_extendable_buffer.h" 29 30 namespace latinime { 31 namespace backward { 32 namespace v402 { 33 34 bool Ver4PtNodeArrayReader::readPtNodeArrayInfoAndReturnIfValid(const int ptNodeArrayPos, 35 int *const outPtNodeCount, int *const outFirstPtNodePos) const { 36 if (ptNodeArrayPos < 0 || ptNodeArrayPos >= mBuffer->getTailPosition()) { 37 // Reading invalid position because of a bug or a broken dictionary. 38 AKLOGE("Reading PtNode array info from invalid dictionary position: %d, dict size: %d", 39 ptNodeArrayPos, mBuffer->getTailPosition()); 40 ASSERT(false); 41 return false; 42 } 43 const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(ptNodeArrayPos); 44 const uint8_t *const dictBuf = mBuffer->getBuffer(usesAdditionalBuffer); 45 int readingPos = ptNodeArrayPos; 46 if (usesAdditionalBuffer) { 47 readingPos -= mBuffer->getOriginalBufferSize(); 48 } 49 const int ptNodeCountInArray = PatriciaTrieReadingUtils::getPtNodeArraySizeAndAdvancePosition( 50 dictBuf, &readingPos); 51 if (usesAdditionalBuffer) { 52 readingPos += mBuffer->getOriginalBufferSize(); 53 } 54 if (ptNodeCountInArray < 0) { 55 AKLOGE("Invalid PtNode count in an array: %d.", ptNodeCountInArray); 56 return false; 57 } 58 *outPtNodeCount = ptNodeCountInArray; 59 *outFirstPtNodePos = readingPos; 60 return true; 61 } 62 63 bool Ver4PtNodeArrayReader::readForwardLinkAndReturnIfValid(const int forwordLinkPos, 64 int *const outNextPtNodeArrayPos) const { 65 if (forwordLinkPos < 0 || forwordLinkPos >= mBuffer->getTailPosition()) { 66 // Reading invalid position because of bug or broken dictionary. 67 AKLOGE("Reading forward link from invalid dictionary position: %d, dict size: %d", 68 forwordLinkPos, mBuffer->getTailPosition()); 69 ASSERT(false); 70 return false; 71 } 72 const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(forwordLinkPos); 73 const uint8_t *const dictBuf = mBuffer->getBuffer(usesAdditionalBuffer); 74 int readingPos = forwordLinkPos; 75 if (usesAdditionalBuffer) { 76 readingPos -= mBuffer->getOriginalBufferSize(); 77 } 78 const int nextPtNodeArrayOffset = 79 DynamicPtReadingUtils::getForwardLinkPosition(dictBuf, readingPos); 80 if (DynamicPtReadingUtils::isValidForwardLinkPosition(nextPtNodeArrayOffset)) { 81 *outNextPtNodeArrayPos = forwordLinkPos + nextPtNodeArrayOffset; 82 } else { 83 *outNextPtNodeArrayPos = NOT_A_DICT_POS; 84 } 85 return true; 86 } 87 88 } // namespace v402 89 } // namespace backward 90 } // namespace latinime 91