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Add new bigram entry at the tail of existing list. 

Bug: 13406708
Change-Id: If3162e65fc9aa2c47f046aee528276cb51fad9f4
main
Keisuke Kuroyanagi 2014-05-01 19:29:43 +09:00
parent 879629af3c
commit 8d8fb396a0
4 changed files with 33 additions and 8 deletions
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26
native/jni/src/suggest/policyimpl/dictionary/bigram/ver4_bigram_list_policy.cpp
View File

@ -55,7 +55,7 @@ bool Ver4BigramListPolicy::addNewEntry(const int terminalId, const int newTarget
}
const int bigramListPos = mBigramDictContent->getBigramListHeadPos(terminalId);
if (bigramListPos == NOT_A_DICT_POS) {
// Updating PtNode doesn't have a bigram list.
// Updating PtNode that doesn't have a bigram list.
// Create new bigram list.
if (!mBigramDictContent->createNewBigramList(terminalId)) {
return false;
@ -98,19 +98,27 @@ bool Ver4BigramListPolicy::addNewEntry(const int terminalId, const int newTarget
if (!mBigramDictContent->createNewBigramList(terminalId)) {
return false;
}
// Write new entry at a head position of the bigram list.
int writingPos = mBigramDictContent->getBigramListHeadPos(terminalId);
const BigramEntry newBigramEntry(true /* hasNext */, NOT_A_PROBABILITY, newTargetTerminalId);
int tailEntryPos = NOT_A_DICT_POS;
// Copy existing bigram list.
if (!mBigramDictContent->copyBigramList(bigramListPos, writingPos, &tailEntryPos)) {
return false;
}
// Write new entry at the tail position of the bigram content.
const BigramEntry newBigramEntry(false /* hasNext */, NOT_A_PROBABILITY, newTargetTerminalId);
const BigramEntry bigramEntryToWrite = createUpdatedBigramEntryFrom(
&newBigramEntry, newProbability, timestamp);
if (!mBigramDictContent->writeBigramEntryAndAdvancePosition(&bigramEntryToWrite, &writingPos)) {
if (!mBigramDictContent->writeBigramEntryAtTail(&bigramEntryToWrite)) {
return false;
}
// Update has next flag of the tail entry.
if (!updateHasNextFlag(true /* hasNext */, tailEntryPos)) {
return false;
}
if (outAddedNewEntry) {
*outAddedNewEntry = true;
}
// Append existing entries by copying.
return mBigramDictContent->copyBigramList(bigramListPos, writingPos);
return true;
}
bool Ver4BigramListPolicy::removeEntry(const int terminalId, const int targetTerminalId) {
@ -239,4 +247,10 @@ const BigramEntry Ver4BigramListPolicy::createUpdatedBigramEntryFrom(
}
}
bool Ver4BigramListPolicy::updateHasNextFlag(const bool hasNext, const int bigramEntryPos) {
const BigramEntry bigramEntry = mBigramDictContent->getBigramEntry(bigramEntryPos);
const BigramEntry updatedBigramEntry = bigramEntry.updateHasNextAndGetEntry(hasNext);
return mBigramDictContent->writeBigramEntry(&updatedBigramEntry, bigramEntryPos);
}
} // namespace latinime

2
native/jni/src/suggest/policyimpl/dictionary/bigram/ver4_bigram_list_policy.h
View File

@ -61,6 +61,8 @@ class Ver4BigramListPolicy : public DictionaryBigramsStructurePolicy {
const BigramEntry createUpdatedBigramEntryFrom(const BigramEntry *const originalBigramEntry,
const int newProbability, const int timestamp) const;
bool updateHasNextFlag(const bool hasNext, const int bigramEntryPos);
BigramDictContent *const mBigramDictContent;
const TerminalPositionLookupTable *const mTerminalPositionLookupTable;
const HeaderPolicy *const mHeaderPolicy;

6
native/jni/src/suggest/policyimpl/dictionary/structure/v4/content/bigram_dict_content.cpp
View File

@ -113,13 +113,17 @@ bool BigramDictContent::writeBigramEntryAndAdvancePosition(
return true;
}
bool BigramDictContent::copyBigramList(const int bigramListPos, const int toPos) {
bool BigramDictContent::copyBigramList(const int bigramListPos, const int toPos,
int *const outTailEntryPos) {
int readingPos = bigramListPos;
int writingPos = toPos;
bool hasNext = true;
while (hasNext) {
const BigramEntry bigramEntry = getBigramEntryAndAdvancePosition(&readingPos);
hasNext = bigramEntry.hasNext();
if (!hasNext) {
*outTailEntryPos = writingPos;
}
if (!writeBigramEntryAndAdvancePosition(&bigramEntry, &writingPos)) {
AKLOGE("Cannot write bigram entry to copy. pos: %d", writingPos);
return false;

7
native/jni/src/suggest/policyimpl/dictionary/structure/v4/content/bigram_dict_content.h
View File

@ -58,6 +58,11 @@ class BigramDictContent : public SparseTableDictContent {
return addressLookupTable->get(terminalId);
}
bool writeBigramEntryAtTail(const BigramEntry *const bigramEntryToWrite) {
int writingPos = getContentBuffer()->getTailPosition();
return writeBigramEntryAndAdvancePosition(bigramEntryToWrite, &writingPos);
}
bool writeBigramEntry(const BigramEntry *const bigramEntryToWrite, const int entryWritingPos) {
int writingPos = entryWritingPos;
return writeBigramEntryAndAdvancePosition(bigramEntryToWrite, &writingPos);
@ -71,7 +76,7 @@ class BigramDictContent : public SparseTableDictContent {
return getUpdatableAddressLookupTable()->set(terminalId, bigramListPos);
}
bool copyBigramList(const int bigramListPos, const int toPos);
bool copyBigramList(const int bigramListPos, const int toPos, int *const outTailEntryPos);
bool flushToFile(const char *const dictPath) const {
return flush(dictPath, Ver4DictConstants::BIGRAM_LOOKUP_TABLE_FILE_EXTENSION,