nyancrimew
/
LatinIME
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

am b71f63bc: Merge "GC step 2. Finding garbage bigram entries." 

* commit 'b71f63bc1c69e3a6b716790880cf3d8e8771f51d':
  GC step 2. Finding garbage bigram entries.
main
Keisuke Kuroyanagi 2013-09-20 04:29:57 -07:00 committed by Android Git Automerger
parent 564e29d9fe b71f63bc1c
commit f95d79e785
19 changed files with 383 additions and 263 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
native/jni/src/suggest/core/dictionary/bigram_dictionary.cpp
View File

@ -147,7 +147,7 @@ int BigramDictionary::getBigramListPositionForWord(const int *prevWord, const in
int pos = mDictionaryStructurePolicy->getTerminalNodePositionOfWord(prevWord, prevWordLength,
forceLowerCaseSearch);
if (NOT_A_DICT_POS == pos) return NOT_A_DICT_POS;
return mDictionaryStructurePolicy->getBigramsPositionOfNode(pos);
return mDictionaryStructurePolicy->getBigramsPositionOfPtNode(pos);
}
int BigramDictionary::getBigramProbability(const int *word0, int length0, const int *word1,

4
native/jni/src/suggest/core/dictionary/multi_bigram_map.h
View File

@ -68,7 +68,7 @@ class MultiBigramMap {
void init(const DictionaryStructureWithBufferPolicy *const structurePolicy,
const int nodePos) {
const int bigramsListPos = structurePolicy->getBigramsPositionOfNode(nodePos);
const int bigramsListPos = structurePolicy->getBigramsPositionOfPtNode(nodePos);
BinaryDictionaryBigramsIterator bigramsIt(structurePolicy->getBigramsStructurePolicy(),
bigramsListPos);
while (bigramsIt.hasNext()) {
@ -112,7 +112,7 @@ class MultiBigramMap {
const DictionaryStructureWithBufferPolicy *const structurePolicy, const int nodePos,
const int nextWordPosition, const int unigramProbability) {
int bigramProbability = NOT_A_PROBABILITY;
const int bigramsListPos = structurePolicy->getBigramsPositionOfNode(nodePos);
const int bigramsListPos = structurePolicy->getBigramsPositionOfPtNode(nodePos);
BinaryDictionaryBigramsIterator bigramsIt(structurePolicy->getBigramsStructurePolicy(),
bigramsListPos);
while (bigramsIt.hasNext()) {

4
native/jni/src/suggest/core/policy/dictionary_structure_with_buffer_policy.h
View File

@ -52,9 +52,9 @@ class DictionaryStructureWithBufferPolicy {
virtual int getUnigramProbabilityOfPtNode(const int nodePos) const = 0;
virtual int getShortcutPositionOfNode(const int nodePos) const = 0;
virtual int getShortcutPositionOfPtNode(const int nodePos) const = 0;
virtual int getBigramsPositionOfNode(const int nodePos) const = 0;
virtual int getBigramsPositionOfPtNode(const int nodePos) const = 0;
virtual const DictionaryHeaderStructurePolicy *getHeaderStructurePolicy() const = 0;

2
native/jni/src/suggest/core/suggest.cpp
View File

@ -223,7 +223,7 @@ int Suggest::outputSuggestions(DicTraverseSession *traverseSession, int *frequen
BinaryDictionaryShortcutIterator shortcutIt(
traverseSession->getDictionaryStructurePolicy()->getShortcutsStructurePolicy(),
traverseSession->getDictionaryStructurePolicy()
->getShortcutPositionOfNode(terminalDicNode->getPos()));
->getShortcutPositionOfPtNode(terminalDicNode->getPos()));
// Shortcut is not supported for multiple words suggestions.
// TODO: Check shortcuts during traversal for multiple words suggestions.
const bool sameAsTyped = TRAVERSAL->sameAsTyped(traverseSession, terminalDicNode);

7
native/jni/src/suggest/policyimpl/dictionary/bigram/bigram_list_policy.h
View File

@ -33,10 +33,9 @@ class BigramListPolicy : public DictionaryBigramsStructurePolicy {
void getNextBigram(int *const outBigramPos, int *const outProbability, bool *const outHasNext,
int *const pos) const {
const BigramListReadWriteUtils::BigramFlags flags =
BigramListReadWriteUtils::getFlagsAndForwardPointer(mBigramsBuf, pos);
*outBigramPos = BigramListReadWriteUtils::getBigramAddressAndForwardPointer(
mBigramsBuf, flags, pos);
BigramListReadWriteUtils::BigramFlags flags;
BigramListReadWriteUtils::getBigramEntryPropertiesAndAdvancePosition(mBigramsBuf, &flags,
outBigramPos, pos);
*outProbability = BigramListReadWriteUtils::getProbabilityFromFlags(flags);
*outHasNext = BigramListReadWriteUtils::hasNext(flags);
}

88
native/jni/src/suggest/policyimpl/dictionary/bigram/bigram_list_read_write_utils.cpp
View File

@ -17,6 +17,7 @@
#include "suggest/policyimpl/dictionary/bigram/bigram_list_read_write_utils.h"
#include "suggest/policyimpl/dictionary/utils/byte_array_utils.h"
#include "suggest/policyimpl/dictionary/utils/buffer_with_extendable_buffer.h"
namespace latinime {
@ -38,23 +39,31 @@ const BigramListReadWriteUtils::BigramFlags
BigramListReadWriteUtils::MASK_ATTRIBUTE_PROBABILITY = 0x0F;
const int BigramListReadWriteUtils::ATTRIBUTE_ADDRESS_SHIFT = 4;
/* static */ BigramListReadWriteUtils::BigramFlags
BigramListReadWriteUtils::getFlagsAndForwardPointer(const uint8_t *const bigramsBuf,
int *const pos) {
return ByteArrayUtils::readUint8AndAdvancePosition(bigramsBuf, pos);
/* static */ void BigramListReadWriteUtils::getBigramEntryPropertiesAndAdvancePosition(
const uint8_t *const bigramsBuf, BigramFlags *const outBigramFlags,
int *const outTargetPtNodePos, int *const bigramEntryPos) {
const BigramFlags bigramFlags = ByteArrayUtils::readUint8AndAdvancePosition(bigramsBuf,
bigramEntryPos);
if (outBigramFlags) {
*outBigramFlags = bigramFlags;
}
const int targetPos = getBigramAddressAndAdvancePosition(bigramsBuf, bigramFlags,
bigramEntryPos);
if (outTargetPtNodePos) {
*outTargetPtNodePos = targetPos;
}
}
/* static */ void BigramListReadWriteUtils::skipExistingBigrams(const uint8_t *const bigramsBuf,
int *const pos) {
BigramFlags flags = getFlagsAndForwardPointer(bigramsBuf, pos);
while (hasNext(flags)) {
*pos += attributeAddressSize(flags);
flags = getFlagsAndForwardPointer(bigramsBuf, pos);
}
*pos += attributeAddressSize(flags);
int *const bigramListPos) {
BigramFlags flags;
do {
getBigramEntryPropertiesAndAdvancePosition(bigramsBuf, &flags, 0 /* outTargetPtNodePos */,
bigramListPos);
} while(hasNext(flags));
}
/* static */ int BigramListReadWriteUtils::getBigramAddressAndForwardPointer(
/* static */ int BigramListReadWriteUtils::getBigramAddressAndAdvancePosition(
const uint8_t *const bigramsBuf, const BigramFlags flags, int *const pos) {
int offset = 0;
const int origin = *pos;
@ -79,4 +88,59 @@ const int BigramListReadWriteUtils::ATTRIBUTE_ADDRESS_SHIFT = 4;
}
}
/* static */ bool BigramListReadWriteUtils::createAndWriteBigramEntry(
BufferWithExtendableBuffer *const buffer, const int targetPos, const int probability,
const bool hasNext, int *const writingPos) {
BigramFlags flags;
if (!createAndGetBigramFlags(*writingPos, targetPos, probability, hasNext, &flags)) {
return false;
}
return writeBigramEntry(buffer, flags, targetPos, writingPos);
}
/* static */ bool BigramListReadWriteUtils::writeBigramEntry(
BufferWithExtendableBuffer *const bufferToWrite, const BigramFlags flags,
const int targetPtNodePos, int *const writingPos) {
if (!bufferToWrite->writeUintAndAdvancePosition(flags, 1 /* size */, writingPos)) {
return false;
}
const int offset = (targetPtNodePos != NOT_A_DICT_POS) ? targetPtNodePos - *writingPos : 0;
const uint32_t absOffest = abs(offset);
const int bigramTargetFieldSize = attributeAddressSize(flags);
return bufferToWrite->writeUintAndAdvancePosition(absOffest, bigramTargetFieldSize,
writingPos);
}
// Returns true if the bigram entry is valid and put entry flags into out*.
/* static */ bool BigramListReadWriteUtils::createAndGetBigramFlags(const int entryPos,
const int targetPos, const int probability, const bool hasNext,
BigramFlags *const outBigramFlags) {
BigramFlags flags = probability & MASK_ATTRIBUTE_PROBABILITY;
if (hasNext) {
flags |= FLAG_ATTRIBUTE_HAS_NEXT;
}
const int targetFieldPos = entryPos + 1;
const int offset = (targetPos != NOT_A_DICT_POS) ? targetPos - targetFieldPos : 0;
if (offset < 0) {
flags |= FLAG_ATTRIBUTE_OFFSET_NEGATIVE;
}
const uint32_t absOffest = abs(offset);
if ((absOffest >> 24) != 0) {
// Offset is too large.
return false;
} else if ((absOffest >> 16) != 0) {
flags |= FLAG_ATTRIBUTE_ADDRESS_TYPE_THREEBYTES;
} else if ((absOffest >> 8) != 0) {
flags |= FLAG_ATTRIBUTE_ADDRESS_TYPE_TWOBYTES;
} else {
flags |= FLAG_ATTRIBUTE_ADDRESS_TYPE_ONEBYTE;
}
// Currently, all newly written bigram position fields are 3 bytes to simplify dictionary
// writing.
// TODO: Remove following 2 lines and optimize memory space.
flags = (flags & (~MASK_ATTRIBUTE_ADDRESS_TYPE)) | FLAG_ATTRIBUTE_ADDRESS_TYPE_THREEBYTES;
*outBigramFlags = flags;
return true;
}
} // namespace latinime

63
native/jni/src/suggest/policyimpl/dictionary/bigram/bigram_list_read_write_utils.h
View File

@ -24,11 +24,15 @@
namespace latinime {
class BufferWithExtendableBuffer;
class BigramListReadWriteUtils {
public:
typedef uint8_t BigramFlags;
static BigramFlags getFlagsAndForwardPointer(const uint8_t *const bigramsBuf, int *const pos);
static void getBigramEntryPropertiesAndAdvancePosition(const uint8_t *const bigramsBuf,
BigramFlags *const outBigramFlags, int *const outTargetPtNodePos,
int *const bigramEntryPos);
static AK_FORCE_INLINE int getProbabilityFromFlags(const BigramFlags flags) {
return flags & MASK_ATTRIBUTE_PROBABILITY;
@ -39,10 +43,7 @@ public:
}
// Bigrams reading methods
static void skipExistingBigrams(const uint8_t *const bigramsBuf, int *const pos);
static int getBigramAddressAndForwardPointer(const uint8_t *const bigramsBuf,
const BigramFlags flags, int *const pos);
static void skipExistingBigrams(const uint8_t *const bigramsBuf, int *const bigramListPos);
// Returns the size of the bigram position field that is stored in bigram flags.
static AK_FORCE_INLINE int attributeAddressSize(const BigramFlags flags) {
@ -67,48 +68,11 @@ public:
return (flags & (~MASK_ATTRIBUTE_PROBABILITY)) | (probability & MASK_ATTRIBUTE_PROBABILITY);
}
// Returns true if the bigram entry is valid and put entry values into out*.
static AK_FORCE_INLINE bool createBigramEntryAndGetFlagsAndOffsetAndOffsetFieldSize(
const int entryPos, const int targetPos, const int probability, const bool hasNext,
BigramFlags *const outBigramFlags, uint32_t *const outOffset,
int *const outOffsetFieldSize) {
if (targetPos == NOT_A_DICT_POS) {
return false;
}
BigramFlags flags = probability & MASK_ATTRIBUTE_PROBABILITY;
if (hasNext) {
flags |= FLAG_ATTRIBUTE_HAS_NEXT;
}
const int targetFieldPos = entryPos + 1;
const int offset = targetPos - targetFieldPos;
if (offset < 0) {
flags |= FLAG_ATTRIBUTE_OFFSET_NEGATIVE;
}
const uint32_t absOffest = abs(offset);
if ((absOffest >> 24) != 0) {
// Offset is too large.
return false;
} else if ((absOffest >> 16) != 0) {
flags |= FLAG_ATTRIBUTE_ADDRESS_TYPE_THREEBYTES;
*outOffsetFieldSize = 3;
} else if ((absOffest >> 8) != 0) {
flags |= FLAG_ATTRIBUTE_ADDRESS_TYPE_TWOBYTES;
*outOffsetFieldSize = 2;
} else {
flags |= FLAG_ATTRIBUTE_ADDRESS_TYPE_ONEBYTE;
*outOffsetFieldSize = 1;
}
static bool createAndWriteBigramEntry(BufferWithExtendableBuffer *const buffer,
const int targetPos, const int probability, const bool hasNext, int *const writingPos);
// Currently, all newly written bigram position fields are 3 bytes to simplify dictionary
// writing.
// TODO: Remove following 2 lines and optimize memory space.
flags = (flags & (~MASK_ATTRIBUTE_ADDRESS_TYPE)) | FLAG_ATTRIBUTE_ADDRESS_TYPE_THREEBYTES;
*outOffsetFieldSize = 3;
*outBigramFlags = flags;
*outOffset = absOffest;
return true;
}
static bool writeBigramEntry(BufferWithExtendableBuffer *const buffer, const BigramFlags flags,
const int targetOffset, int *const writingPos);
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(BigramListReadWriteUtils);
@ -122,9 +86,16 @@ private:
static const BigramFlags MASK_ATTRIBUTE_PROBABILITY;
static const int ATTRIBUTE_ADDRESS_SHIFT;
// Returns true if the bigram entry is valid and put entry flags into out*.
static bool createAndGetBigramFlags(const int entryPos, const int targetPos,
const int probability, const bool hasNext, BigramFlags *const outBigramFlags);
static AK_FORCE_INLINE bool isOffsetNegative(const BigramFlags flags) {
return (flags & FLAG_ATTRIBUTE_OFFSET_NEGATIVE) != 0;
}
static int getBigramAddressAndAdvancePosition(const uint8_t *const bigramsBuf,
const BigramFlags flags, int *const pos);
};
} // namespace latinime
#endif // LATINIME_BIGRAM_LIST_READ_WRITE_UTILS_H

239
native/jni/src/suggest/policyimpl/dictionary/bigram/dynamic_bigram_list_policy.cpp
View File

@ -16,41 +16,47 @@
#include "suggest/policyimpl/dictionary/bigram/dynamic_bigram_list_policy.h"
#include "suggest/core/policy/dictionary_shortcuts_structure_policy.h"
#include "suggest/policyimpl/dictionary/bigram/bigram_list_read_write_utils.h"
#include "suggest/policyimpl/dictionary/dynamic_patricia_trie_node_reader.h"
#include "suggest/policyimpl/dictionary/utils/buffer_with_extendable_buffer.h"
namespace latinime {
const int DynamicBigramListPolicy::BIGRAM_LINK_COUNT_LIMIT = 10000;
const int DynamicBigramListPolicy::CONTINUING_BIGRAM_LINK_COUNT_LIMIT = 10000;
const int DynamicBigramListPolicy::BIGRAM_ENTRY_COUNT_IN_A_BIGRAM_LIST_LIMIT = 100000;
void DynamicBigramListPolicy::getNextBigram(int *const outBigramPos, int *const outProbability,
bool *const outHasNext, int *const pos) const {
const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(*pos);
bool *const outHasNext, int *const bigramEntryPos) const {
const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(*bigramEntryPos);
const uint8_t *const buffer = mBuffer->getBuffer(usesAdditionalBuffer);
if (usesAdditionalBuffer) {
*pos -= mBuffer->getOriginalBufferSize();
*bigramEntryPos -= mBuffer->getOriginalBufferSize();
}
const BigramListReadWriteUtils::BigramFlags flags =
BigramListReadWriteUtils::getFlagsAndForwardPointer(buffer, pos);
int originalBigramPos = BigramListReadWriteUtils::getBigramAddressAndForwardPointer(
buffer, flags, pos);
BigramListReadWriteUtils::BigramFlags bigramFlags;
int originalBigramPos;
BigramListReadWriteUtils::getBigramEntryPropertiesAndAdvancePosition(buffer, &bigramFlags,
&originalBigramPos, bigramEntryPos);
if (usesAdditionalBuffer && originalBigramPos != NOT_A_DICT_POS) {
originalBigramPos += mBuffer->getOriginalBufferSize();
}
*outBigramPos = followBigramLinkAndGetCurrentBigramPtNodePos(originalBigramPos);
*outProbability = BigramListReadWriteUtils::getProbabilityFromFlags(flags);
*outHasNext = BigramListReadWriteUtils::hasNext(flags);
*outProbability = BigramListReadWriteUtils::getProbabilityFromFlags(bigramFlags);
*outHasNext = BigramListReadWriteUtils::hasNext(bigramFlags);
if (usesAdditionalBuffer) {
*pos += mBuffer->getOriginalBufferSize();
*bigramEntryPos += mBuffer->getOriginalBufferSize();
}
}
void DynamicBigramListPolicy::skipAllBigrams(int *const pos) const {
const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(*pos);
void DynamicBigramListPolicy::skipAllBigrams(int *const bigramListPos) const {
const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(*bigramListPos);
const uint8_t *const buffer = mBuffer->getBuffer(usesAdditionalBuffer);
if (usesAdditionalBuffer) {
*pos -= mBuffer->getOriginalBufferSize();
*bigramListPos -= mBuffer->getOriginalBufferSize();
}
BigramListReadWriteUtils::skipExistingBigrams(buffer, pos);
BigramListReadWriteUtils::skipExistingBigrams(buffer, bigramListPos);
if (usesAdditionalBuffer) {
*pos += mBuffer->getOriginalBufferSize();
*bigramListPos += mBuffer->getOriginalBufferSize();
}
}
@ -61,13 +67,19 @@ bool DynamicBigramListPolicy::copyAllBigrams(BufferWithExtendableBuffer *const b
*fromPos -= mBuffer->getOriginalBufferSize();
}
*outBigramsCount = 0;
BigramListReadWriteUtils::BigramFlags flags;
BigramListReadWriteUtils::BigramFlags bigramFlags;
int bigramEntryCount = 0;
do {
if (++bigramEntryCount > BIGRAM_ENTRY_COUNT_IN_A_BIGRAM_LIST_LIMIT) {
AKLOGE("Too many bigram entries. %d", BIGRAM_ENTRY_COUNT_IN_A_BIGRAM_LIST_LIMIT);
ASSERT(false);
return false;
}
// The buffer address can be changed after calling buffer writing methods.
const uint8_t *const buffer = mBuffer->getBuffer(usesAdditionalBuffer);
flags = BigramListReadWriteUtils::getFlagsAndForwardPointer(buffer, fromPos);
int originalBigramPos = BigramListReadWriteUtils::getBigramAddressAndForwardPointer(
buffer, flags, fromPos);
int originalBigramPos;
BigramListReadWriteUtils::getBigramEntryPropertiesAndAdvancePosition(
mBuffer->getBuffer(usesAdditionalBuffer), &bigramFlags, &originalBigramPos,
fromPos);
if (originalBigramPos == NOT_A_DICT_POS) {
// skip invalid bigram entry.
continue;
@ -76,132 +88,163 @@ bool DynamicBigramListPolicy::copyAllBigrams(BufferWithExtendableBuffer *const b
originalBigramPos += mBuffer->getOriginalBufferSize();
}
const int bigramPos = followBigramLinkAndGetCurrentBigramPtNodePos(originalBigramPos);
BigramListReadWriteUtils::BigramFlags newBigramFlags;
uint32_t newBigramOffset;
int newBigramOffsetFieldSize;
if(!BigramListReadWriteUtils::createBigramEntryAndGetFlagsAndOffsetAndOffsetFieldSize(
*toPos, bigramPos, BigramListReadWriteUtils::getProbabilityFromFlags(flags),
BigramListReadWriteUtils::hasNext(flags), &newBigramFlags, &newBigramOffset,
&newBigramOffsetFieldSize)) {
continue;
}
// Write bigram entry. Target buffer is always the additional buffer.
if (!bufferToWrite->writeUintAndAdvancePosition(newBigramFlags, 1 /* size */,toPos)) {
return false;
}
if (!bufferToWrite->writeUintAndAdvancePosition(newBigramOffset, newBigramOffsetFieldSize,
toPos)) {
if (!BigramListReadWriteUtils::createAndWriteBigramEntry(bufferToWrite, bigramPos,
BigramListReadWriteUtils::getProbabilityFromFlags(bigramFlags),
BigramListReadWriteUtils::hasNext(bigramFlags), toPos)) {
return false;
}
(*outBigramsCount)++;
} while(BigramListReadWriteUtils::hasNext(flags));
} while(BigramListReadWriteUtils::hasNext(bigramFlags));
if (usesAdditionalBuffer) {
*fromPos += mBuffer->getOriginalBufferSize();
}
return true;
}
bool DynamicBigramListPolicy::addNewBigramEntryToBigramList(const int bigramPos,
const int probability, int *const pos) {
const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(*pos);
// Finding useless bigram entries and remove them. Bigram entry is useless when the target PtNode
// has been deleted or is not a valid terminal.
bool DynamicBigramListPolicy::updateAllBigramEntriesAndDeleteUselessEntries(
int *const bigramListPos) {
const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(*bigramListPos);
if (usesAdditionalBuffer) {
*pos -= mBuffer->getOriginalBufferSize();
*bigramListPos -= mBuffer->getOriginalBufferSize();
}
BigramListReadWriteUtils::BigramFlags flags;
DynamicPatriciaTrieNodeReader nodeReader(mBuffer, this /* bigramsPolicy */, mShortcutPolicy);
BigramListReadWriteUtils::BigramFlags bigramFlags;
int bigramEntryCount = 0;
do {
int entryPos = *pos;
if (++bigramEntryCount > BIGRAM_ENTRY_COUNT_IN_A_BIGRAM_LIST_LIMIT) {
AKLOGE("Too many bigram entries. %d", BIGRAM_ENTRY_COUNT_IN_A_BIGRAM_LIST_LIMIT);
ASSERT(false);
return false;
}
int bigramEntryPos = *bigramListPos;
int originalBigramPos;
// The buffer address can be changed after calling buffer writing methods.
BigramListReadWriteUtils::getBigramEntryPropertiesAndAdvancePosition(
mBuffer->getBuffer(usesAdditionalBuffer), &bigramFlags, &originalBigramPos,
bigramListPos);
if (usesAdditionalBuffer) {
bigramEntryPos += mBuffer->getOriginalBufferSize();
}
if (originalBigramPos == NOT_A_DICT_POS) {
// This entry has already been removed.
continue;
}
if (usesAdditionalBuffer) {
originalBigramPos += mBuffer->getOriginalBufferSize();
}
const int bigramTargetNodePos =
followBigramLinkAndGetCurrentBigramPtNodePos(originalBigramPos);
nodeReader.fetchNodeInfoInBufferFromPtNodePos(bigramTargetNodePos);
// TODO: Update probability for supporting probability decaying.
if (nodeReader.isDeleted() || !nodeReader.isTerminal()
|| bigramTargetNodePos == NOT_A_DICT_POS) {
// The target is no longer valid terminal. Invalidate the current bigram entry.
if (!BigramListReadWriteUtils::writeBigramEntry(mBuffer, bigramFlags,
NOT_A_DICT_POS /* targetOffset */, &bigramEntryPos)) {
return false;
}
}
} while(BigramListReadWriteUtils::hasNext(bigramFlags));
return true;
}
bool DynamicBigramListPolicy::addNewBigramEntryToBigramList(const int bigramTargetPos,
const int probability, int *const bigramListPos) {
const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(*bigramListPos);
if (usesAdditionalBuffer) {
*bigramListPos -= mBuffer->getOriginalBufferSize();
}
BigramListReadWriteUtils::BigramFlags bigramFlags;
int bigramEntryCount = 0;
do {
if (++bigramEntryCount > BIGRAM_ENTRY_COUNT_IN_A_BIGRAM_LIST_LIMIT) {
AKLOGE("Too many bigram entries. %d", BIGRAM_ENTRY_COUNT_IN_A_BIGRAM_LIST_LIMIT);
ASSERT(false);
return false;
}
int entryPos = *bigramListPos;
if (usesAdditionalBuffer) {
entryPos += mBuffer->getOriginalBufferSize();
}
int originalBigramPos;
// The buffer address can be changed after calling buffer writing methods.
const uint8_t *const buffer = mBuffer->getBuffer(usesAdditionalBuffer);
flags = BigramListReadWriteUtils::getFlagsAndForwardPointer(buffer, pos);
int originalBigramPos = BigramListReadWriteUtils::getBigramAddressAndForwardPointer(
buffer, flags, pos);
BigramListReadWriteUtils::getBigramEntryPropertiesAndAdvancePosition(
mBuffer->getBuffer(usesAdditionalBuffer), &bigramFlags, &originalBigramPos,
bigramListPos);
if (usesAdditionalBuffer && originalBigramPos != NOT_A_DICT_POS) {
originalBigramPos += mBuffer->getOriginalBufferSize();
}
if (followBigramLinkAndGetCurrentBigramPtNodePos(originalBigramPos) == bigramPos) {
if (followBigramLinkAndGetCurrentBigramPtNodePos(originalBigramPos) == bigramTargetPos) {
// Update this bigram entry.
const BigramListReadWriteUtils::BigramFlags updatedFlags =
BigramListReadWriteUtils::setProbabilityInFlags(flags, probability);
return mBuffer->writeUintAndAdvancePosition(updatedFlags, 1 /* size */, &entryPos);
BigramListReadWriteUtils::setProbabilityInFlags(bigramFlags, probability);
return BigramListReadWriteUtils::writeBigramEntry(mBuffer, updatedFlags,
originalBigramPos, &entryPos);
}
if (BigramListReadWriteUtils::hasNext(flags)) {
if (BigramListReadWriteUtils::hasNext(bigramFlags)) {
continue;
}
// The current last entry is found.
// First, update the flags of the last entry.
const BigramListReadWriteUtils::BigramFlags updatedFlags =
BigramListReadWriteUtils::setHasNextFlag(flags);
if (!mBuffer->writeUintAndAdvancePosition(updatedFlags, 1 /* size */, &entryPos)) {
BigramListReadWriteUtils::setHasNextFlag(bigramFlags);
if (!BigramListReadWriteUtils::writeBigramEntry(mBuffer, updatedFlags, originalBigramPos,
&entryPos)) {
return false;
}
if (usesAdditionalBuffer) {
*pos += mBuffer->getOriginalBufferSize();
*bigramListPos += mBuffer->getOriginalBufferSize();
}
// Then, add a new entry after the last entry.
return writeNewBigramEntry(bigramPos, probability, pos);
} while(BigramListReadWriteUtils::hasNext(flags));
return writeNewBigramEntry(bigramTargetPos, probability, bigramListPos);
} while(BigramListReadWriteUtils::hasNext(bigramFlags));
// We return directly from the while loop.
ASSERT(false);
return false;
}
bool DynamicBigramListPolicy::writeNewBigramEntry(const int bigramPos, const int probability,
bool DynamicBigramListPolicy::writeNewBigramEntry(const int bigramTargetPos, const int probability,
int *const writingPos) {
BigramListReadWriteUtils::BigramFlags newBigramFlags;
uint32_t newBigramOffset;
int newBigramOffsetFieldSize;
if(!BigramListReadWriteUtils::createBigramEntryAndGetFlagsAndOffsetAndOffsetFieldSize(
*writingPos, bigramPos, probability, false /* hasNext */, &newBigramFlags,
&newBigramOffset, &newBigramOffsetFieldSize)) {
return false;
}
// Write bigram flags.
if (!mBuffer->writeUintAndAdvancePosition(newBigramFlags, 1 /* size */, writingPos)) {
return false;
}
// Write bigram positon offset.
if (!mBuffer->writeUintAndAdvancePosition(newBigramOffset, newBigramOffsetFieldSize,
writingPos)) {
return false;
}
return true;
// hasNext is false because we are adding a new bigram entry at the end of the bigram list.
return BigramListReadWriteUtils::createAndWriteBigramEntry(mBuffer, bigramTargetPos,
probability, false /* hasNext */, writingPos);
}
bool DynamicBigramListPolicy::removeBigram(const int bigramListPos, const int targetBigramPos) {
bool DynamicBigramListPolicy::removeBigram(const int bigramListPos, const int bigramTargetPos) {
const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(bigramListPos);
int pos = bigramListPos;
if (usesAdditionalBuffer) {
pos -= mBuffer->getOriginalBufferSize();
}
BigramListReadWriteUtils::BigramFlags flags;
BigramListReadWriteUtils::BigramFlags bigramFlags;
int bigramEntryCount = 0;
do {
// The buffer address can be changed after calling buffer writing methods.
const uint8_t *const buffer = mBuffer->getBuffer(usesAdditionalBuffer);
flags = BigramListReadWriteUtils::getFlagsAndForwardPointer(buffer, &pos);
int bigramOffsetFieldPos = pos;
if (usesAdditionalBuffer) {
bigramOffsetFieldPos += mBuffer->getOriginalBufferSize();
if (++bigramEntryCount > BIGRAM_ENTRY_COUNT_IN_A_BIGRAM_LIST_LIMIT) {
AKLOGE("Too many bigram entries. %d", BIGRAM_ENTRY_COUNT_IN_A_BIGRAM_LIST_LIMIT);
ASSERT(false);
return false;
}
int bigramEntryPos = pos;
int originalBigramPos;
// The buffer address can be changed after calling buffer writing methods.
BigramListReadWriteUtils::getBigramEntryPropertiesAndAdvancePosition(
mBuffer->getBuffer(usesAdditionalBuffer), &bigramFlags, &originalBigramPos, &pos);
if (usesAdditionalBuffer) {
bigramEntryPos += mBuffer->getOriginalBufferSize();
}
int originalBigramPos = BigramListReadWriteUtils::getBigramAddressAndForwardPointer(
buffer, flags, &pos);
if (usesAdditionalBuffer && originalBigramPos != NOT_A_DICT_POS) {
originalBigramPos += mBuffer->getOriginalBufferSize();
}
const int bigramPos = followBigramLinkAndGetCurrentBigramPtNodePos(originalBigramPos);
if (bigramPos != targetBigramPos) {
if (bigramPos != bigramTargetPos) {
continue;
}
// Target entry is found. Write 0 into the bigram pos field to mark the bigram invalid.
const int bigramOffsetFieldSize = BigramListReadWriteUtils::attributeAddressSize(flags);
if (!mBuffer->writeUintAndAdvancePosition(0 /* data */, bigramOffsetFieldSize,
&bigramOffsetFieldPos)) {
return false;
}
return true;
} while(BigramListReadWriteUtils::hasNext(flags));
// Target entry is found. Write an invalid target position to mark the bigram invalid.
return BigramListReadWriteUtils::writeBigramEntry(mBuffer, bigramFlags,
NOT_A_DICT_POS /* targetOffset */, &bigramEntryPos);
} while(BigramListReadWriteUtils::hasNext(bigramFlags));
return false;
}
@ -212,14 +255,14 @@ int DynamicBigramListPolicy::followBigramLinkAndGetCurrentBigramPtNodePos(
}
int currentPos = originalBigramPos;
DynamicPatriciaTrieNodeReader nodeReader(mBuffer, this /* bigramsPolicy */, mShortcutPolicy);
nodeReader.fetchNodeInfoFromBuffer(currentPos);
nodeReader.fetchNodeInfoInBufferFromPtNodePos(currentPos);
int bigramLinkCount = 0;
while (nodeReader.getBigramLinkedNodePos() != NOT_A_DICT_POS) {
currentPos = nodeReader.getBigramLinkedNodePos();
nodeReader.fetchNodeInfoFromBuffer(currentPos);
nodeReader.fetchNodeInfoInBufferFromPtNodePos(currentPos);
bigramLinkCount++;
if (bigramLinkCount > BIGRAM_LINK_COUNT_LIMIT) {
AKLOGI("Bigram link is invalid. start position: %d", bigramPos);
if (bigramLinkCount > CONTINUING_BIGRAM_LINK_COUNT_LIMIT) {
AKLOGE("Bigram link is invalid. start position: %d", bigramPos);
ASSERT(false);
return NOT_A_DICT_POS;
}

23
native/jni/src/suggest/policyimpl/dictionary/bigram/dynamic_bigram_list_policy.h
View File

@ -21,13 +21,12 @@
#include "defines.h"
#include "suggest/core/policy/dictionary_bigrams_structure_policy.h"
#include "suggest/core/policy/dictionary_shortcuts_structure_policy.h"
#include "suggest/policyimpl/dictionary/bigram/bigram_list_read_write_utils.h"
#include "suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_helper.h"
#include "suggest/policyimpl/dictionary/utils/buffer_with_extendable_buffer.h"
namespace latinime {
class BufferWithExtendableBuffer;
class DictionaryShortcutsStructurePolicy;
/*
* This is a dynamic version of BigramListPolicy and supports an additional buffer.
*/
@ -40,9 +39,9 @@ class DynamicBigramListPolicy : public DictionaryBigramsStructurePolicy {
~DynamicBigramListPolicy() {}
void getNextBigram(int *const outBigramPos, int *const outProbability, bool *const outHasNext,
int *const pos) const;
int *const bigramEntryPos) const;
void skipAllBigrams(int *const pos) const;
void skipAllBigrams(int *const bigramListPos) const;
// Copy bigrams from the bigram list that starts at fromPos in mBuffer to toPos in
// bufferToWrite and advance these positions after bigram lists. This method skips invalid
@ -50,18 +49,22 @@ class DynamicBigramListPolicy : public DictionaryBigramsStructurePolicy {
bool copyAllBigrams(BufferWithExtendableBuffer *const bufferToWrite, int *const fromPos,
int *const toPos, int *const outBigramsCount) const;
bool addNewBigramEntryToBigramList(const int bigramPos, const int probability, int *const pos);
bool updateAllBigramEntriesAndDeleteUselessEntries(int *const bigramListPos);
bool writeNewBigramEntry(const int bigramPos, const int probability,
bool addNewBigramEntryToBigramList(const int bigramTargetPos, const int probability,
int *const bigramListPos);
bool writeNewBigramEntry(const int bigramTargetPos, const int probability,
int *const writingPos);
// Return if targetBigramPos is found or not.
bool removeBigram(const int bigramListPos, const int targetBigramPos);
bool removeBigram(const int bigramListPos, const int bigramTargetPos);
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(DynamicBigramListPolicy);
static const int BIGRAM_LINK_COUNT_LIMIT;
static const int CONTINUING_BIGRAM_LINK_COUNT_LIMIT;
static const int BIGRAM_ENTRY_COUNT_IN_A_BIGRAM_LIST_LIMIT;
BufferWithExtendableBuffer *const mBuffer;
const DictionaryShortcutsStructurePolicy *const mShortcutPolicy;

31
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_gc_event_listeners.h
View File

@ -20,6 +20,7 @@
#include <vector>
#include "defines.h"
#include "suggest/policyimpl/dictionary/bigram/dynamic_bigram_list_policy.h"
#include "suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_helper.h"
#include "suggest/policyimpl/dictionary/dynamic_patricia_trie_writing_helper.h"
#include "suggest/policyimpl/dictionary/dynamic_patricia_trie_writing_utils.h"
@ -68,6 +69,36 @@ class DynamicPatriciaTrieGcEventListeners {
int mChildrenValue;
};
// Updates all bigram entries that are held by valid PtNodes. This removes useless bigram
// entries.
class ListenerForUpdatingBigramProbability
: public DynamicPatriciaTrieReadingHelper::TraversingEventListener {
public:
ListenerForUpdatingBigramProbability(DynamicBigramListPolicy *const bigramPolicy)
: mBigramPolicy(bigramPolicy) {}
bool onAscend() { return true; }
bool onDescend() { return true; }
bool onVisitingPtNode(const DynamicPatriciaTrieNodeReader *const node) {
if (!node->isDeleted()) {
int pos = node->getBigramsPos();
if (pos != NOT_A_DICT_POS) {
if (!mBigramPolicy->updateAllBigramEntriesAndDeleteUselessEntries(&pos)) {
return false;
}
}
}
return true;
}
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(ListenerForUpdatingBigramProbability);
DynamicBigramListPolicy *const mBigramPolicy;
};
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(DynamicPatriciaTrieGcEventListeners);
};

19
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_node_reader.cpp
View File

@ -23,26 +23,26 @@
namespace latinime {
void DynamicPatriciaTrieNodeReader::fetchNodeInfoFromBufferAndProcessMovedNode(const int nodePos,
const int maxCodePointCount, int *const outCodePoints) {
if (nodePos < 0 || nodePos >= mBuffer->getTailPosition()) {
void DynamicPatriciaTrieNodeReader::fetchPtNodeInfoFromBufferAndProcessMovedPtNode(
const int ptNodePos, const int maxCodePointCount, int *const outCodePoints) {
if (ptNodePos < 0 || ptNodePos >= mBuffer->getTailPosition()) {
AKLOGE("Fetching PtNode info form invalid dictionary position: %d, dictionary size: %d",
nodePos, mBuffer->getTailPosition());
ptNodePos, mBuffer->getTailPosition());
ASSERT(false);
invalidatePtNodeInfo();
return;
}
const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(nodePos);
const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(ptNodePos);
const uint8_t *const dictBuf = mBuffer->getBuffer(usesAdditionalBuffer);
int pos = nodePos;
mHeadPos = nodePos;
int pos = ptNodePos;
mHeadPos = ptNodePos;
if (usesAdditionalBuffer) {
pos -= mBuffer->getOriginalBufferSize();
}
mFlags = PatriciaTrieReadingUtils::getFlagsAndAdvancePosition(dictBuf, &pos);
const int parentPos =
DynamicPatriciaTrieReadingUtils::getParentPosAndAdvancePosition(dictBuf, &pos);
mParentPos = (parentPos != 0) ? nodePos + parentPos : NOT_A_DICT_POS;
mParentPos = (parentPos != 0) ? ptNodePos + parentPos : NOT_A_DICT_POS;
if (outCodePoints != 0) {
mCodePointCount = PatriciaTrieReadingUtils::getCharsAndAdvancePosition(
dictBuf, mFlags, maxCodePointCount, outCodePoints, &pos);
@ -99,7 +99,8 @@ void DynamicPatriciaTrieNodeReader::fetchNodeInfoFromBufferAndProcessMovedNode(c
// Read destination node if the read node is a moved node.
if (DynamicPatriciaTrieReadingUtils::isMoved(mFlags)) {
// The destination position is stored at the same place as the parent position.
fetchNodeInfoFromBufferAndProcessMovedNode(mParentPos, maxCodePointCount, outCodePoints);
fetchPtNodeInfoFromBufferAndProcessMovedPtNode(mParentPos, maxCodePointCount,
outCodePoints);
}
}

18
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_node_reader.h
View File

@ -48,17 +48,17 @@ class DynamicPatriciaTrieNodeReader {
~DynamicPatriciaTrieNodeReader() {}
// Reads node information from dictionary buffer and updates members with the information.
AK_FORCE_INLINE void fetchNodeInfoFromBuffer(const int nodePos) {
fetchNodeInfoFromBufferAndGetNodeCodePoints(nodePos , 0 /* maxCodePointCount */,
0 /* outCodePoints */);
// Reads PtNode information from dictionary buffer and updates members with the information.
AK_FORCE_INLINE void fetchNodeInfoInBufferFromPtNodePos(const int ptNodePos) {
fetchNodeInfoInBufferFromPtNodePosAndGetNodeCodePoints(ptNodePos ,
0 /* maxCodePointCount */, 0 /* outCodePoints */);
}
AK_FORCE_INLINE void fetchNodeInfoFromBufferAndGetNodeCodePoints(const int nodePos,
const int maxCodePointCount, int *const outCodePoints) {
AK_FORCE_INLINE void fetchNodeInfoInBufferFromPtNodePosAndGetNodeCodePoints(
const int ptNodePos, const int maxCodePointCount, int *const outCodePoints) {
mSiblingPos = NOT_A_DICT_POS;
mBigramLinkedNodePos = NOT_A_DICT_POS;
fetchNodeInfoFromBufferAndProcessMovedNode(nodePos, maxCodePointCount, outCodePoints);
fetchPtNodeInfoFromBufferAndProcessMovedPtNode(ptNodePos, maxCodePointCount, outCodePoints);
}
// HeadPos is different from NodePos when the current PtNode is a moved PtNode.
@ -154,8 +154,8 @@ class DynamicPatriciaTrieNodeReader {
int mBigramPos;
int mSiblingPos;
void fetchNodeInfoFromBufferAndProcessMovedNode(const int nodePos, const int maxCodePointCount,
int *const outCodePoints);
void fetchPtNodeInfoFromBufferAndProcessMovedPtNode(const int ptNodePos,
const int maxCodePointCount, int *const outCodePoints);
void invalidatePtNodeInfo();
};

32
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_policy.cpp
View File

@ -35,7 +35,7 @@ void DynamicPatriciaTriePolicy::createAndGetAllChildNodes(const DicNode *const d
}
DynamicPatriciaTrieReadingHelper readingHelper(&mBufferWithExtendableBuffer,
getBigramsStructurePolicy(), getShortcutsStructurePolicy());
readingHelper.initWithNodeArrayPos(dicNode->getChildrenPos());
readingHelper.initWithPtNodeArrayPos(dicNode->getChildrenPos());
const DynamicPatriciaTrieNodeReader *const nodeReader = readingHelper.getNodeReader();
while (!readingHelper.isEnd()) {
childDicNodes->pushLeavingChild(dicNode, nodeReader->getHeadPos(),
@ -48,7 +48,7 @@ void DynamicPatriciaTriePolicy::createAndGetAllChildNodes(const DicNode *const d
}
int DynamicPatriciaTriePolicy::getCodePointsAndProbabilityAndReturnCodePointCount(
const int nodePos, const int maxCodePointCount, int *const outCodePoints,
const int ptNodePos, const int maxCodePointCount, int *const outCodePoints,
int *const outUnigramProbability) const {
// This method traverses parent nodes from the terminal by following parent pointers; thus,
// node code points are stored in the buffer in the reverse order.
@ -56,9 +56,9 @@ int DynamicPatriciaTriePolicy::getCodePointsAndProbabilityAndReturnCodePointCoun
DynamicPatriciaTrieReadingHelper readingHelper(&mBufferWithExtendableBuffer,
getBigramsStructurePolicy(), getShortcutsStructurePolicy());
// First, read the terminal node and get its probability.
readingHelper.initWithNodePos(nodePos);
readingHelper.initWithPtNodePos(ptNodePos);
if (!readingHelper.isValidTerminalNode()) {
// Node at the nodePos is not a valid terminal node.
// Node at the ptNodePos is not a valid terminal node.
*outUnigramProbability = NOT_A_PROBABILITY;
return 0;
}
@ -67,7 +67,7 @@ int DynamicPatriciaTriePolicy::getCodePointsAndProbabilityAndReturnCodePointCoun
// Then, following parent node link to the dictionary root and fetch node code points.
while (!readingHelper.isEnd()) {
if (readingHelper.getTotalCodePointCount() > maxCodePointCount) {
// The nodePos is not a valid terminal node position in the dictionary.
// The ptNodePos is not a valid terminal node position in the dictionary.
*outUnigramProbability = NOT_A_PROBABILITY;
return 0;
}
@ -98,7 +98,7 @@ int DynamicPatriciaTriePolicy::getTerminalNodePositionOfWord(const int *const in
}
DynamicPatriciaTrieReadingHelper readingHelper(&mBufferWithExtendableBuffer,
getBigramsStructurePolicy(), getShortcutsStructurePolicy());
readingHelper.initWithNodeArrayPos(getRootPosition());
readingHelper.initWithPtNodeArrayPos(getRootPosition());
const DynamicPatriciaTrieNodeReader *const nodeReader = readingHelper.getNodeReader();
while (!readingHelper.isEnd()) {
const int matchedCodePointCount = readingHelper.getPrevTotalCodePointCount();
@ -148,39 +148,39 @@ int DynamicPatriciaTriePolicy::getProbability(const int unigramProbability,
}
}
int DynamicPatriciaTriePolicy::getUnigramProbabilityOfPtNode(const int nodePos) const {
if (nodePos == NOT_A_DICT_POS) {
int DynamicPatriciaTriePolicy::getUnigramProbabilityOfPtNode(const int ptNodePos) const {
if (ptNodePos == NOT_A_DICT_POS) {
return NOT_A_PROBABILITY;
}
DynamicPatriciaTrieNodeReader nodeReader(&mBufferWithExtendableBuffer,
getBigramsStructurePolicy(), getShortcutsStructurePolicy());
nodeReader.fetchNodeInfoFromBuffer(nodePos);
nodeReader.fetchNodeInfoInBufferFromPtNodePos(ptNodePos);
if (nodeReader.isDeleted() || nodeReader.isBlacklisted() || nodeReader.isNotAWord()) {
return NOT_A_PROBABILITY;
}
return getProbability(nodeReader.getProbability(), NOT_A_PROBABILITY);
}
int DynamicPatriciaTriePolicy::getShortcutPositionOfNode(const int nodePos) const {
if (nodePos == NOT_A_DICT_POS) {
int DynamicPatriciaTriePolicy::getShortcutPositionOfPtNode(const int ptNodePos) const {
if (ptNodePos == NOT_A_DICT_POS) {
return NOT_A_DICT_POS;
}
DynamicPatriciaTrieNodeReader nodeReader(&mBufferWithExtendableBuffer,
getBigramsStructurePolicy(), getShortcutsStructurePolicy());
nodeReader.fetchNodeInfoFromBuffer(nodePos);
nodeReader.fetchNodeInfoInBufferFromPtNodePos(ptNodePos);
if (nodeReader.isDeleted()) {
return NOT_A_DICT_POS;
}
return nodeReader.getShortcutPos();
}
int DynamicPatriciaTriePolicy::getBigramsPositionOfNode(const int nodePos) const {
if (nodePos == NOT_A_DICT_POS) {
int DynamicPatriciaTriePolicy::getBigramsPositionOfPtNode(const int ptNodePos) const {
if (ptNodePos == NOT_A_DICT_POS) {
return NOT_A_DICT_POS;
}
DynamicPatriciaTrieNodeReader nodeReader(&mBufferWithExtendableBuffer,
getBigramsStructurePolicy(), getShortcutsStructurePolicy());
nodeReader.fetchNodeInfoFromBuffer(nodePos);
nodeReader.fetchNodeInfoInBufferFromPtNodePos(ptNodePos);
if (nodeReader.isDeleted()) {
return NOT_A_DICT_POS;
}
@ -195,7 +195,7 @@ bool DynamicPatriciaTriePolicy::addUnigramWord(const int *const word, const int
}
DynamicPatriciaTrieReadingHelper readingHelper(&mBufferWithExtendableBuffer,
getBigramsStructurePolicy(), getShortcutsStructurePolicy());
readingHelper.initWithNodeArrayPos(getRootPosition());
readingHelper.initWithPtNodeArrayPos(getRootPosition());
DynamicPatriciaTrieWritingHelper writingHelper(&mBufferWithExtendableBuffer,
&mBigramListPolicy, &mShortcutListPolicy);
return writingHelper.addUnigramWord(&readingHelper, word, length, probability);

8
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_policy.h
View File

@ -51,7 +51,7 @@ class DynamicPatriciaTriePolicy : public DictionaryStructureWithBufferPolicy {
DicNodeVector *const childDicNodes) const;
int getCodePointsAndProbabilityAndReturnCodePointCount(
const int terminalNodePos, const int maxCodePointCount, int *const outCodePoints,
const int terminalPtNodePos, const int maxCodePointCount, int *const outCodePoints,
int *const outUnigramProbability) const;
int getTerminalNodePositionOfWord(const int *const inWord,
@ -59,11 +59,11 @@ class DynamicPatriciaTriePolicy : public DictionaryStructureWithBufferPolicy {
int getProbability(const int unigramProbability, const int bigramProbability) const;
int getUnigramProbabilityOfPtNode(const int nodePos) const;
int getUnigramProbabilityOfPtNode(const int ptNodePos) const;
int getShortcutPositionOfNode(const int nodePos) const;
int getShortcutPositionOfPtNode(const int ptNodePos) const;
int getBigramsPositionOfNode(const int nodePos) const;
int getBigramsPositionOfPtNode(const int ptNodePos) const;
const DictionaryHeaderStructurePolicy *getHeaderStructurePolicy() const {
return &mHeaderPolicy;

4
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_helper.cpp
View File

@ -72,7 +72,7 @@ bool DynamicPatriciaTrieReadingHelper::traverseAllPtNodesInPostorderDepthFirstMa
// Read node array size and process empty node arrays. Nodes and arrays are counted up in this
// method to avoid an infinite loop.
void DynamicPatriciaTrieReadingHelper::nextNodeArray() {
void DynamicPatriciaTrieReadingHelper::nextPtNodeArray() {
mReadingState.mPosOfLastPtNodeArrayHead = mReadingState.mPos;
const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(mReadingState.mPos);
const uint8_t *const dictBuf = mBuffer->getBuffer(usesAdditionalBuffer);
@ -123,7 +123,7 @@ void DynamicPatriciaTrieReadingHelper::followForwardLink() {
if (DynamicPatriciaTrieReadingUtils::isValidForwardLinkPosition(forwardLinkPosition)) {
// Follow the forward link.
mReadingState.mPos += forwardLinkPosition;
nextNodeArray();
nextPtNodeArray();
} else {
// All node arrays have been read.
mReadingState.mPos = NOT_A_DICT_POS;

40
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_helper.h
View File

@ -73,32 +73,32 @@ class DynamicPatriciaTrieReadingHelper {
return mReadingState.mPos == NOT_A_DICT_POS;
}
// Initialize reading state with the head position of a node array.
AK_FORCE_INLINE void initWithNodeArrayPos(const int nodeArrayPos) {
if (nodeArrayPos == NOT_A_DICT_POS) {
// Initialize reading state with the head position of a PtNode array.
AK_FORCE_INLINE void initWithPtNodeArrayPos(const int ptNodeArrayPos) {
if (ptNodeArrayPos == NOT_A_DICT_POS) {
mReadingState.mPos = NOT_A_DICT_POS;
} else {
mIsError = false;
mReadingState.mPos = nodeArrayPos;
mReadingState.mPos = ptNodeArrayPos;
mReadingState.mPrevTotalCodePointCount = 0;
mReadingState.mTotalNodeCount = 0;
mReadingState.mNodeArrayCount = 0;
mReadingState.mPosOfLastForwardLinkField = NOT_A_DICT_POS;
mReadingStateStack.clear();
nextNodeArray();
nextPtNodeArray();
if (!isEnd()) {
fetchNodeInfo();
fetchPtNodeInfo();
}
}
}
// Initialize reading state with the head position of a node.
AK_FORCE_INLINE void initWithNodePos(const int nodePos) {
if (nodePos == NOT_A_DICT_POS) {
AK_FORCE_INLINE void initWithPtNodePos(const int ptNodePos) {
if (ptNodePos == NOT_A_DICT_POS) {
mReadingState.mPos = NOT_A_DICT_POS;
} else {
mIsError = false;
mReadingState.mPos = nodePos;
mReadingState.mPos = ptNodePos;
mReadingState.mNodeCount = 1;
mReadingState.mPrevTotalCodePointCount = 0;
mReadingState.mTotalNodeCount = 1;
@ -106,7 +106,7 @@ class DynamicPatriciaTrieReadingHelper {
mReadingState.mPosOfLastForwardLinkField = NOT_A_DICT_POS;
mReadingState.mPosOfLastPtNodeArrayHead = NOT_A_DICT_POS;
mReadingStateStack.clear();
fetchNodeInfo();
fetchPtNodeInfo();
}
}
@ -151,10 +151,10 @@ class DynamicPatriciaTrieReadingHelper {
// All nodes in the current node array have been read.
followForwardLink();
if (!isEnd()) {
fetchNodeInfo();
fetchPtNodeInfo();
}
} else {
fetchNodeInfo();
fetchPtNodeInfo();
}
}
@ -167,9 +167,9 @@ class DynamicPatriciaTrieReadingHelper {
mReadingState.mPos = mNodeReader.getChildrenPos();
mReadingState.mPosOfLastForwardLinkField = NOT_A_DICT_POS;
// Read children node array.
nextNodeArray();
nextPtNodeArray();
if (!isEnd()) {
fetchNodeInfo();
fetchPtNodeInfo();
}
} else {
mReadingState.mPos = NOT_A_DICT_POS;
@ -186,7 +186,7 @@ class DynamicPatriciaTrieReadingHelper {
mReadingState.mPos = mNodeReader.getParentPos();
mReadingState.mPosOfLastForwardLinkField = NOT_A_DICT_POS;
mReadingState.mPosOfLastPtNodeArrayHead = NOT_A_DICT_POS;
fetchNodeInfo();
fetchPtNodeInfo();
} else {
mReadingState.mPos = NOT_A_DICT_POS;
}
@ -202,7 +202,7 @@ class DynamicPatriciaTrieReadingHelper {
AK_FORCE_INLINE void reloadCurrentPtNodeInfo() {
if (!isEnd()) {
fetchNodeInfo();
fetchPtNodeInfo();
}
}
@ -240,12 +240,12 @@ class DynamicPatriciaTrieReadingHelper {
int mMergedNodeCodePoints[MAX_WORD_LENGTH];
std::vector<ReadingState> mReadingStateStack;
void nextNodeArray();
void nextPtNodeArray();
void followForwardLink();
AK_FORCE_INLINE void fetchNodeInfo() {
mNodeReader.fetchNodeInfoFromBufferAndGetNodeCodePoints(mReadingState.mPos,
AK_FORCE_INLINE void fetchPtNodeInfo() {
mNodeReader.fetchNodeInfoInBufferFromPtNodePosAndGetNodeCodePoints(mReadingState.mPos,
MAX_WORD_LENGTH, mMergedNodeCodePoints);
if (mNodeReader.getCodePointCount() <= 0) {
// Empty node is not allowed.
@ -271,7 +271,7 @@ class DynamicPatriciaTrieReadingHelper {
} else {
mReadingState = mReadingStateStack.back();
mReadingStateStack.pop_back();
fetchNodeInfo();
fetchPtNodeInfo();
}
}
};

20
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_writing_helper.cpp
View File

@ -90,7 +90,7 @@ bool DynamicPatriciaTrieWritingHelper::addBigramWords(const int word0Pos, const
const int probability) {
int mMergedNodeCodePoints[MAX_WORD_LENGTH];
DynamicPatriciaTrieNodeReader nodeReader(mBuffer, mBigramPolicy, mShortcutPolicy);
nodeReader.fetchNodeInfoFromBufferAndGetNodeCodePoints(word0Pos, MAX_WORD_LENGTH,
nodeReader.fetchNodeInfoInBufferFromPtNodePosAndGetNodeCodePoints(word0Pos, MAX_WORD_LENGTH,
mMergedNodeCodePoints);
// Move node to add bigram entry.
const int newNodePos = mBuffer->getTailPosition();
@ -104,7 +104,7 @@ bool DynamicPatriciaTrieWritingHelper::addBigramWords(const int word0Pos, const
&writingPos)) {
return false;
}
nodeReader.fetchNodeInfoFromBuffer(newNodePos);
nodeReader.fetchNodeInfoInBufferFromPtNodePos(newNodePos);
if (nodeReader.getBigramsPos() != NOT_A_DICT_POS) {
// Insert a new bigram entry into the existing bigram list.
int bigramListPos = nodeReader.getBigramsPos();
@ -131,7 +131,7 @@ bool DynamicPatriciaTrieWritingHelper::addBigramWords(const int word0Pos, const
// Remove a bigram relation from word0Pos to word1Pos.
bool DynamicPatriciaTrieWritingHelper::removeBigramWords(const int word0Pos, const int word1Pos) {
DynamicPatriciaTrieNodeReader nodeReader(mBuffer, mBigramPolicy, mShortcutPolicy);
nodeReader.fetchNodeInfoFromBuffer(word0Pos);
nodeReader.fetchNodeInfoInBufferFromPtNodePos(word0Pos);
if (nodeReader.getBigramsPos() == NOT_A_DICT_POS) {
return false;
}
@ -217,7 +217,7 @@ bool DynamicPatriciaTrieWritingHelper::markNodeAsMovedAndSetPosition(
// Update children's parent position.
DynamicPatriciaTrieReadingHelper readingHelper(mBuffer, mBigramPolicy, mShortcutPolicy);
const DynamicPatriciaTrieNodeReader *const nodeReader = readingHelper.getNodeReader();
readingHelper.initWithNodeArrayPos(originalNode->getChildrenPos());
readingHelper.initWithPtNodeArrayPos(originalNode->getChildrenPos());
while (!readingHelper.isEnd()) {
const int childPtNodeWrittenPos = nodeReader->getHeadPos();
const int parentOffset = movedPos - childPtNodeWrittenPos;
@ -452,7 +452,7 @@ bool DynamicPatriciaTrieWritingHelper::reallocatePtNodeAndAddNewPtNodes(
}
// Load node info. Information of the 1st part will be fetched.
DynamicPatriciaTrieNodeReader nodeReader(mBuffer, mBigramPolicy, mShortcutPolicy);
nodeReader.fetchNodeInfoFromBuffer(firstPartOfReallocatedPtNodePos);
nodeReader.fetchNodeInfoInBufferFromPtNodePos(firstPartOfReallocatedPtNodePos);
// Update children position.
int childrenPosFieldPos = nodeReader.getChildrenPosFieldPos();
if (!DynamicPatriciaTrieWritingUtils::writeChildrenPositionAndAdvancePosition(mBuffer,
@ -519,7 +519,7 @@ bool DynamicPatriciaTrieWritingHelper::writeBufferToFilePointer(FILE *const file
bool DynamicPatriciaTrieWritingHelper::runGC(const int rootPtNodeArrayPos,
BufferWithExtendableBuffer *const bufferToWrite) {
DynamicPatriciaTrieReadingHelper readingHelper(mBuffer, mBigramPolicy, mShortcutPolicy);
readingHelper.initWithNodeArrayPos(rootPtNodeArrayPos);
readingHelper.initWithPtNodeArrayPos(rootPtNodeArrayPos);
DynamicPatriciaTrieGcEventListeners
::ListenerForUpdatingUnigramProbabilityAndMarkingUselessPtNodesAsDeleted
listenerForUpdatingUnigramProbabilityAndMarkingUselessPtNodesAsDeleted(
@ -528,6 +528,14 @@ bool DynamicPatriciaTrieWritingHelper::runGC(const int rootPtNodeArrayPos,
&listenerForUpdatingUnigramProbabilityAndMarkingUselessPtNodesAsDeleted)) {
return false;
}
readingHelper.initWithPtNodeArrayPos(rootPtNodeArrayPos);
DynamicPatriciaTrieGcEventListeners::ListenerForUpdatingBigramProbability
listenerForupdatingBigramProbability(mBigramPolicy);
if (!readingHelper.traverseAllPtNodesInPostorderDepthFirstManner(
&listenerForupdatingBigramProbability)) {
return false;
}
// TODO: Implement.
return false;
}

34
native/jni/src/suggest/policyimpl/dictionary/patricia_trie_policy.cpp
View File

@ -49,7 +49,7 @@ void PatriciaTriePolicy::createAndGetAllChildNodes(const DicNode *const dicNode,
// with a z, it's the last PtNode of the root array, so all children addresses will be smaller
// than the position we look for, and we have to descend the z node).
/* Parameters :
* nodePos: the byte position of the terminal PtNode of the word we are searching for (this is
* ptNodePos: the byte position of the terminal PtNode of the word we are searching for (this is
* what is stored as the "bigram position" in each bigram)
* outCodePoints: an array to write the found word, with MAX_WORD_LENGTH size.
* outUnigramProbability: a pointer to an int to write the probability into.
@ -57,7 +57,7 @@ void PatriciaTriePolicy::createAndGetAllChildNodes(const DicNode *const dicNode,
*/
// TODO: Split this function to be more readable
int PatriciaTriePolicy::getCodePointsAndProbabilityAndReturnCodePointCount(
const int nodePos, const int maxCodePointCount, int *const outCodePoints,
const int ptNodePos, const int maxCodePointCount, int *const outCodePoints,
int *const outUnigramProbability) const {
int pos = getRootPosition();
int wordPos = 0;
@ -78,7 +78,7 @@ int PatriciaTriePolicy::getCodePointsAndProbabilityAndReturnCodePointCount(
PatriciaTrieReadingUtils::getFlagsAndAdvancePosition(mDictRoot, &pos);
const int character = PatriciaTrieReadingUtils::getCodePointAndAdvancePosition(
mDictRoot, &pos);
if (nodePos == startPos) {
if (ptNodePos == startPos) {
// We found the position. Copy the rest of the code points in the buffer and return
// the length.
outCodePoints[wordPos] = character;
@ -121,7 +121,7 @@ int PatriciaTriePolicy::getCodePointsAndProbabilityAndReturnCodePointCount(
// Here comes the tricky part. First, read the children position.
const int childrenPos = PatriciaTrieReadingUtils
::readChildrenPositionAndAdvancePosition(mDictRoot, flags, &currentPos);
if (childrenPos > nodePos) {
if (childrenPos > ptNodePos) {
// If the children pos is greater than the position, it means the previous
// PtNode, which position is stored in lastCandidatePtNodePos, was the right
// one.
@ -213,7 +213,7 @@ int PatriciaTriePolicy::getCodePointsAndProbabilityAndReturnCodePointCount(
}
}
// If we have looked through all the PtNodes and found no match, the nodePos is
// If we have looked through all the PtNodes and found no match, the ptNodePos is
// not the position of a terminal in this dictionary.
return 0;
}
@ -319,11 +319,11 @@ int PatriciaTriePolicy::getProbability(const int unigramProbability,
}
}
int PatriciaTriePolicy::getUnigramProbabilityOfPtNode(const int nodePos) const {
if (nodePos == NOT_A_DICT_POS) {
int PatriciaTriePolicy::getUnigramProbabilityOfPtNode(const int ptNodePos) const {
if (ptNodePos == NOT_A_DICT_POS) {
return NOT_A_PROBABILITY;
}
int pos = nodePos;
int pos = ptNodePos;
const PatriciaTrieReadingUtils::NodeFlags flags =
PatriciaTrieReadingUtils::getFlagsAndAdvancePosition(mDictRoot, &pos);
if (!PatriciaTrieReadingUtils::isTerminal(flags)) {
@ -341,11 +341,11 @@ int PatriciaTriePolicy::getUnigramProbabilityOfPtNode(const int nodePos) const {
mDictRoot, &pos), NOT_A_PROBABILITY);
}
int PatriciaTriePolicy::getShortcutPositionOfNode(const int nodePos) const {
if (nodePos == NOT_A_DICT_POS) {
int PatriciaTriePolicy::getShortcutPositionOfPtNode(const int ptNodePos) const {
if (ptNodePos == NOT_A_DICT_POS) {
return NOT_A_DICT_POS;
}
int pos = nodePos;
int pos = ptNodePos;
const PatriciaTrieReadingUtils::NodeFlags flags =
PatriciaTrieReadingUtils::getFlagsAndAdvancePosition(mDictRoot, &pos);
if (!PatriciaTrieReadingUtils::hasShortcutTargets(flags)) {
@ -361,11 +361,11 @@ int PatriciaTriePolicy::getShortcutPositionOfNode(const int nodePos) const {
return pos;
}
int PatriciaTriePolicy::getBigramsPositionOfNode(const int nodePos) const {
if (nodePos == NOT_A_DICT_POS) {
int PatriciaTriePolicy::getBigramsPositionOfPtNode(const int ptNodePos) const {
if (ptNodePos == NOT_A_DICT_POS) {
return NOT_A_DICT_POS;
}
int pos = nodePos;
int pos = ptNodePos;
const PatriciaTrieReadingUtils::NodeFlags flags =
PatriciaTrieReadingUtils::getFlagsAndAdvancePosition(mDictRoot, &pos);
if (!PatriciaTrieReadingUtils::hasBigrams(flags)) {
@ -385,8 +385,8 @@ int PatriciaTriePolicy::getBigramsPositionOfNode(const int nodePos) const {
}
int PatriciaTriePolicy::createAndGetLeavingChildNode(const DicNode *const dicNode,
const int nodePos, DicNodeVector *childDicNodes) const {
int pos = nodePos;
const int ptNodePos, DicNodeVector *childDicNodes) const {
int pos = ptNodePos;
const PatriciaTrieReadingUtils::NodeFlags flags =
PatriciaTrieReadingUtils::getFlagsAndAdvancePosition(mDictRoot, &pos);
int mergedNodeCodePoints[MAX_WORD_LENGTH];
@ -404,7 +404,7 @@ int PatriciaTriePolicy::createAndGetLeavingChildNode(const DicNode *const dicNod
if (PatriciaTrieReadingUtils::hasBigrams(flags)) {
getBigramsStructurePolicy()->skipAllBigrams(&pos);
}
childDicNodes->pushLeavingChild(dicNode, nodePos, childrenPos, probability,
childDicNodes->pushLeavingChild(dicNode, ptNodePos, childrenPos, probability,
PatriciaTrieReadingUtils::isTerminal(flags),
PatriciaTrieReadingUtils::hasChildrenInFlags(flags),
PatriciaTrieReadingUtils::isBlacklisted(flags) ||

8
native/jni/src/suggest/policyimpl/dictionary/patricia_trie_policy.h
View File

@ -58,11 +58,11 @@ class PatriciaTriePolicy : public DictionaryStructureWithBufferPolicy {
int getProbability(const int unigramProbability, const int bigramProbability) const;
int getUnigramProbabilityOfPtNode(const int nodePos) const;
int getUnigramProbabilityOfPtNode(const int ptNodePos) const;
int getShortcutPositionOfNode(const int nodePos) const;
int getShortcutPositionOfPtNode(const int ptNodePos) const;
int getBigramsPositionOfNode(const int nodePos) const;
int getBigramsPositionOfPtNode(const int ptNodePos) const;
const DictionaryHeaderStructurePolicy *getHeaderStructurePolicy() const {
return &mHeaderPolicy;
@ -121,7 +121,7 @@ class PatriciaTriePolicy : public DictionaryStructureWithBufferPolicy {
const BigramListPolicy mBigramListPolicy;
const ShortcutListPolicy mShortcutListPolicy;
int createAndGetLeavingChildNode(const DicNode *const dicNode, const int nodePos,
int createAndGetLeavingChildNode(const DicNode *const dicNode, const int ptNodePos,
DicNodeVector *const childDicNodes) const;
};
} // namespace latinime