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 * dictionary/structure/v4/ver4_pt_node_array_reader.cpp
22 */
23
24 #include "dictionary/structure/backward/v402/ver4_pt_node_array_reader.h"
25
26 #include "dictionary/structure/pt_common/dynamic_pt_reading_utils.h"
27 #include "dictionary/structure/pt_common/patricia_trie_reading_utils.h"
28 #include "dictionary/utils/buffer_with_extendable_buffer.h"
29
30 namespace latinime {
31 namespace backward {
32 namespace v402 {
33
readPtNodeArrayInfoAndReturnIfValid(const int ptNodeArrayPos,int * const outPtNodeCount,int * const outFirstPtNodePos) const34 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
readForwardLinkAndReturnIfValid(const int forwordLinkPos,int * const outNextPtNodeArrayPos) const63 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