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Update children's parent position when the node get moved. 

Bug: 6669677
Change-Id: Ifcaf784afd218c7afd70167045cd2aed8b7909c2
main
Keisuke Kuroyanagi 2013-09-13 14:26:00 +09:00
parent dd072e3201
commit 0243c9ae3d
3 changed files with 27 additions and 2 deletions
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1
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_node_reader.cpp
View File

@ -28,6 +28,7 @@ void DynamicPatriciaTrieNodeReader::fetchNodeInfoFromBufferAndProcessMovedNode(c
const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(nodePos);
const uint8_t *const dictBuf = mBuffer->getBuffer(usesAdditionalBuffer);
int pos = nodePos;
mHeadPos = nodePos;
if (usesAdditionalBuffer) {
pos -= mBuffer->getOriginalBufferSize();
}

10
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_node_reader.h
View File

@ -39,8 +39,8 @@ class DynamicPatriciaTrieNodeReader {
const DictionaryBigramsStructurePolicy *const bigramsPolicy,
const DictionaryShortcutsStructurePolicy *const shortcutsPolicy)
: mBuffer(buffer), mBigramsPolicy(bigramsPolicy),
mShortcutsPolicy(shortcutsPolicy), mNodePos(NOT_A_VALID_WORD_POS), mFlags(0),
mParentPos(NOT_A_DICT_POS), mCodePointCount(0),
mShortcutsPolicy(shortcutsPolicy), mNodePos(NOT_A_VALID_WORD_POS),
mHeadPos(NOT_A_DICT_POS), mFlags(0), mParentPos(NOT_A_DICT_POS), mCodePointCount(0),
mProbabilityFieldPos(NOT_A_DICT_POS), mProbability(NOT_A_PROBABILITY),
mChildrenPosFieldPos(NOT_A_DICT_POS), mChildrenPos(NOT_A_DICT_POS),
mShortcutPos(NOT_A_DICT_POS), mBigramPos(NOT_A_DICT_POS),
@ -65,6 +65,11 @@ class DynamicPatriciaTrieNodeReader {
return mNodePos;
}
// HeadPos is different from NodePos when the current PtNode is a moved PtNode.
AK_FORCE_INLINE int getHeadPos() const {
return mHeadPos;
}
// Flags
AK_FORCE_INLINE bool isDeleted() const {
return DynamicPatriciaTrieReadingUtils::isDeleted(mFlags);
@ -136,6 +141,7 @@ class DynamicPatriciaTrieNodeReader {
const DictionaryBigramsStructurePolicy *const mBigramsPolicy;
const DictionaryShortcutsStructurePolicy *const mShortcutsPolicy;
int mNodePos;
int mHeadPos;
DynamicPatriciaTrieReadingUtils::NodeFlags mFlags;
int mParentPos;
uint8_t mCodePointCount;

18
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_writing_helper.cpp
View File

@ -125,6 +125,24 @@ bool DynamicPatriciaTrieWritingHelper::markNodeAsMovedAndSetPosition(
mBuffer, movedPosOffset, &writingPos)) {
return false;
}
if (originalNode->hasChildren()) {
// Update children's parent position.
DynamicPatriciaTrieReadingHelper readingHelper(mBuffer, mBigramPolicy, mShortcutPolicy);
const DynamicPatriciaTrieNodeReader *const nodeReader = readingHelper.getNodeReader();
readingHelper.initWithNodeArrayPos(originalNode->getChildrenPos());
while (!readingHelper.isEnd()) {
const int childPtNodeWrittenPos = nodeReader->getHeadPos();
const int parentOffset = movedPos - childPtNodeWrittenPos;
int parentOffsetFieldPos = childPtNodeWrittenPos + 1 /* Flags */;
if (!DynamicPatriciaTrieWritingUtils::writeParentOffsetAndAdvancePosition(
mBuffer, parentOffset, &parentOffsetFieldPos)) {
// Parent offset cannot be written because of a bug or a broken dictionary; thus,
// we give up to update dictionary.
return false;
}
readingHelper.readNextSiblingNode();
}
}
return true;
}