Introduce patriciaTrie to abstract traversing version 2 dictionary.

Bug: 6669677
Change-Id: Ifef72f3d7a7ba67c5232b98c7835485d72d7322d
main
Keisuke Kuroynagi 2013-06-28 19:47:00 +09:00
parent e04794cbbe
commit c5e6efafff
8 changed files with 198 additions and 32 deletions

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@ -70,6 +70,7 @@ LATIN_IME_CORE_SRC_FILES := \
proximity_info_state_utils.cpp) \ proximity_info_state_utils.cpp) \
suggest/core/policy/weighting.cpp \ suggest/core/policy/weighting.cpp \
suggest/core/session/dic_traverse_session.cpp \ suggest/core/session/dic_traverse_session.cpp \
suggest/policyimpl/dictionary/patricia_trie_policy.cpp \
suggest/policyimpl/gesture/gesture_suggest_policy_factory.cpp \ suggest/policyimpl/gesture/gesture_suggest_policy_factory.cpp \
$(addprefix suggest/policyimpl/typing/, \ $(addprefix suggest/policyimpl/typing/, \
scoring_params.cpp \ scoring_params.cpp \

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@ -26,6 +26,7 @@
#include "suggest/core/dictionary/probability_utils.h" #include "suggest/core/dictionary/probability_utils.h"
#include "suggest/core/layout/proximity_info.h" #include "suggest/core/layout/proximity_info.h"
#include "suggest/core/layout/proximity_info_state.h" #include "suggest/core/layout/proximity_info_state.h"
#include "suggest/core/policy/dictionary_structure_policy.h"
#include "utils/char_utils.h" #include "utils/char_utils.h"
namespace latinime { namespace latinime {
@ -36,14 +37,15 @@ namespace latinime {
/* static */ void DicNodeUtils::initAsRoot(const BinaryDictionaryInfo *const binaryDictionaryInfo, /* static */ void DicNodeUtils::initAsRoot(const BinaryDictionaryInfo *const binaryDictionaryInfo,
const int prevWordNodePos, DicNode *const newRootNode) { const int prevWordNodePos, DicNode *const newRootNode) {
newRootNode->initAsRoot(binaryDictionaryInfo->getRootPosition(), prevWordNodePos); newRootNode->initAsRoot(binaryDictionaryInfo->getStructurePolicy()->getRootPosition(),
prevWordNodePos);
} }
/*static */ void DicNodeUtils::initAsRootWithPreviousWord( /*static */ void DicNodeUtils::initAsRootWithPreviousWord(
const BinaryDictionaryInfo *const binaryDictionaryInfo, const BinaryDictionaryInfo *const binaryDictionaryInfo,
DicNode *const prevWordLastNode, DicNode *const newRootNode) { DicNode *const prevWordLastNode, DicNode *const newRootNode) {
newRootNode->initAsRootWithPreviousWord( newRootNode->initAsRootWithPreviousWord(
prevWordLastNode, binaryDictionaryInfo->getRootPosition()); prevWordLastNode, binaryDictionaryInfo->getStructurePolicy()->getRootPosition());
} }
/* static */ void DicNodeUtils::initByCopy(DicNode *srcNode, DicNode *destNode) { /* static */ void DicNodeUtils::initByCopy(DicNode *srcNode, DicNode *destNode) {

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@ -150,11 +150,10 @@ int BigramDictionary::getPredictions(const int *prevWord, int prevWordLength, in
int BigramDictionary::getBigramListPositionForWord(const int *prevWord, const int prevWordLength, int BigramDictionary::getBigramListPositionForWord(const int *prevWord, const int prevWordLength,
const bool forceLowerCaseSearch) const { const bool forceLowerCaseSearch) const {
if (0 >= prevWordLength) return 0; if (0 >= prevWordLength) return 0;
const uint8_t *const root = mBinaryDictionaryInfo->getDictRoot(); int pos = mBinaryDictionaryInfo->getStructurePolicy()->getTerminalNodePositionOfWord(
int pos = BinaryFormat::getTerminalPosition(root, prevWord, prevWordLength, mBinaryDictionaryInfo, prevWord, prevWordLength, forceLowerCaseSearch);
forceLowerCaseSearch);
if (NOT_VALID_WORD == pos) return 0; if (NOT_VALID_WORD == pos) return 0;
const uint8_t *const root = mBinaryDictionaryInfo->getDictRoot();
const uint8_t flags = BinaryFormat::getFlagsAndForwardPointer(root, &pos); const uint8_t flags = BinaryFormat::getFlagsAndForwardPointer(root, &pos);
if (0 == (flags & BinaryFormat::FLAG_HAS_BIGRAMS)) return 0; if (0 == (flags & BinaryFormat::FLAG_HAS_BIGRAMS)) return 0;
if (0 == (flags & BinaryFormat::FLAG_HAS_MULTIPLE_CHARS)) { if (0 == (flags & BinaryFormat::FLAG_HAS_MULTIPLE_CHARS)) {
@ -189,8 +188,8 @@ bool BigramDictionary::isValidBigram(const int *word0, int length0, const int *w
int pos = getBigramListPositionForWord(word0, length0, false /* forceLowerCaseSearch */); int pos = getBigramListPositionForWord(word0, length0, false /* forceLowerCaseSearch */);
// getBigramListPositionForWord returns 0 if this word isn't in the dictionary or has no bigrams // getBigramListPositionForWord returns 0 if this word isn't in the dictionary or has no bigrams
if (0 == pos) return false; if (0 == pos) return false;
int nextWordPos = BinaryFormat::getTerminalPosition(mBinaryDictionaryInfo->getDictRoot(), int nextWordPos = mBinaryDictionaryInfo->getStructurePolicy()->getTerminalNodePositionOfWord(
word1, length1, false /* forceLowerCaseSearch */); mBinaryDictionaryInfo, word1, length1, false /* forceLowerCaseSearch */);
if (NOT_VALID_WORD == nextWordPos) return false; if (NOT_VALID_WORD == nextWordPos) return false;
for (BinaryDictionaryBigramsIterator bigramsIt(mBinaryDictionaryInfo, pos); for (BinaryDictionaryBigramsIterator bigramsIt(mBinaryDictionaryInfo, pos);

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@ -22,11 +22,10 @@
#include "defines.h" #include "defines.h"
#include "suggest/core/dictionary/binary_dictionary_format_utils.h" #include "suggest/core/dictionary/binary_dictionary_format_utils.h"
#include "suggest/core/dictionary/binary_dictionary_header.h" #include "suggest/core/dictionary/binary_dictionary_header.h"
#include "suggest/policyimpl/dictionary/dictionary_structure_policy_factory.h"
namespace latinime { namespace latinime {
class BinaryDictionaryHeader;
class BinaryDictionaryInfo { class BinaryDictionaryInfo {
public: public:
BinaryDictionaryInfo(const uint8_t *const dictBuf, const int dictSize, const int mmapFd, BinaryDictionaryInfo(const uint8_t *const dictBuf, const int dictSize, const int mmapFd,
@ -35,7 +34,9 @@ class BinaryDictionaryInfo {
mDictBufOffset(dictBufOffset), mIsUpdatable(isUpdatable), mDictBufOffset(dictBufOffset), mIsUpdatable(isUpdatable),
mDictionaryFormat(BinaryDictionaryFormatUtils::detectFormatVersion( mDictionaryFormat(BinaryDictionaryFormatUtils::detectFormatVersion(
mDictBuf, mDictSize)), mDictBuf, mDictSize)),
mDictionaryHeader(this), mDictRoot(mDictBuf + mDictionaryHeader.getSize()) {} mDictionaryHeader(this), mDictRoot(mDictBuf + mDictionaryHeader.getSize()),
mStructurePolicy(DictionaryStructurePolicyFactory::getDictionaryStructurePolicy(
mDictionaryFormat)) {}
AK_FORCE_INLINE const uint8_t *getDictBuf() const { AK_FORCE_INLINE const uint8_t *getDictBuf() const {
return mDictBuf; return mDictBuf;
@ -61,10 +62,6 @@ class BinaryDictionaryInfo {
return mDictionaryFormat; return mDictionaryFormat;
} }
AK_FORCE_INLINE int getRootPosition() const {
return 0;
}
AK_FORCE_INLINE const BinaryDictionaryHeader *getHeader() const { AK_FORCE_INLINE const BinaryDictionaryHeader *getHeader() const {
return &mDictionaryHeader; return &mDictionaryHeader;
} }
@ -75,6 +72,10 @@ class BinaryDictionaryInfo {
return mIsUpdatable && isUpdatableDictionaryFormat; return mIsUpdatable && isUpdatableDictionaryFormat;
} }
AK_FORCE_INLINE const DictionaryStructurePolicy *getStructurePolicy() const {
return mStructurePolicy;
}
private: private:
DISALLOW_COPY_AND_ASSIGN(BinaryDictionaryInfo); DISALLOW_COPY_AND_ASSIGN(BinaryDictionaryInfo);
@ -86,6 +87,7 @@ class BinaryDictionaryInfo {
const BinaryDictionaryFormatUtils::FORMAT_VERSION mDictionaryFormat; const BinaryDictionaryFormatUtils::FORMAT_VERSION mDictionaryFormat;
const BinaryDictionaryHeader mDictionaryHeader; const BinaryDictionaryHeader mDictionaryHeader;
const uint8_t *const mDictRoot; const uint8_t *const mDictRoot;
const DictionaryStructurePolicy *const mStructurePolicy;
}; };
} }
#endif /* LATINIME_BINARY_DICTIONARY_INFO_H */ #endif /* LATINIME_BINARY_DICTIONARY_INFO_H */

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@ -83,27 +83,14 @@ int Dictionary::getBigrams(const int *word, int length, int *inputCodePoints, in
} }
int Dictionary::getProbability(const int *word, int length) const { int Dictionary::getProbability(const int *word, int length) const {
const uint8_t *const root = mBinaryDictionaryInfo.getDictRoot(); const DictionaryStructurePolicy *const structurePolicy =
int pos = BinaryFormat::getTerminalPosition(root, word, length, mBinaryDictionaryInfo.getStructurePolicy();
int pos = structurePolicy->getTerminalNodePositionOfWord(&mBinaryDictionaryInfo, word, length,
false /* forceLowerCaseSearch */); false /* forceLowerCaseSearch */);
if (NOT_VALID_WORD == pos) { if (NOT_VALID_WORD == pos) {
return NOT_A_PROBABILITY; return NOT_A_PROBABILITY;
} }
const uint8_t flags = BinaryFormat::getFlagsAndForwardPointer(root, &pos); return structurePolicy->getUnigramProbability(&mBinaryDictionaryInfo, pos);
if (flags & (BinaryFormat::FLAG_IS_BLACKLISTED | BinaryFormat::FLAG_IS_NOT_A_WORD)) {
// If this is not a word, or if it's a blacklisted entry, it should behave as
// having no probability outside of the suggestion process (where it should be used
// for shortcuts).
return NOT_A_PROBABILITY;
}
const bool hasMultipleChars = (0 != (BinaryFormat::FLAG_HAS_MULTIPLE_CHARS & flags));
if (hasMultipleChars) {
pos = BinaryFormat::skipOtherCharacters(root, pos);
} else {
BinaryFormat::getCodePointAndForwardPointer(root, &pos);
}
const int unigramProbability = BinaryFormat::readProbabilityWithoutMovingPointer(root, pos);
return unigramProbability;
} }
bool Dictionary::isValidBigram(const int *word0, int length0, const int *word1, int length1) const { bool Dictionary::isValidBigram(const int *word0, int length0, const int *word1, int length1) const {

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@ -0,0 +1,47 @@
/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef LATINIME_DICTIONARY_STRUCTURE_POLICY_FACTORY_H
#define LATINIME_DICTIONARY_STRUCTURE_POLICY_FACTORY_H
#include "defines.h"
#include "suggest/core/dictionary/binary_dictionary_format_utils.h"
#include "suggest/policyimpl/dictionary/patricia_trie_policy.h"
namespace latinime {
class DictionaryStructurePolicy;
class DictionaryStructurePolicyFactory {
public:
static const DictionaryStructurePolicy *getDictionaryStructurePolicy(
const BinaryDictionaryFormatUtils::FORMAT_VERSION dictionaryFormat) {
switch (dictionaryFormat) {
case BinaryDictionaryFormatUtils::VERSION_1:
// Fall through
case BinaryDictionaryFormatUtils::VERSION_2:
return PatriciaTriePolicy::getInstance();
default:
ASSERT(false);
return 0;
}
}
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(DictionaryStructurePolicyFactory);
};
} // namespace latinime
#endif // LATINIME_DICTIONARY_STRUCTURE_POLICY_FACTORY_H

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@ -0,0 +1,70 @@
/*
* Copyright (C) 2013, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "suggest/policyimpl/dictionary/patricia_trie_policy.h"
#include "defines.h"
#include "suggest/core/dicnode/dic_node.h"
#include "suggest/core/dicnode/dic_node_vector.h"
#include "suggest/core/dictionary/binary_dictionary_info.h"
#include "suggest/core/dictionary/binary_format.h"
namespace latinime {
const PatriciaTriePolicy PatriciaTriePolicy::sInstance;
void PatriciaTriePolicy::createAndGetAllChildNodes(const DicNode *const dicNode,
const BinaryDictionaryInfo *const binaryDictionaryInfo,
const NodeFilter *const nodeFilter, DicNodeVector *const childDicNodes) const {
// TODO: Move children creating methods form DicNodeUtils.
}
void PatriciaTriePolicy::getWordAtPosition(const BinaryDictionaryInfo *const binaryDictionaryInfo,
const int terminalNodePos, const int maxDepth, int *const outWord,
int *const outUnigramProbability) const {
BinaryFormat::getWordAtAddress(binaryDictionaryInfo->getDictRoot(), terminalNodePos,
maxDepth, outWord, outUnigramProbability);
}
int PatriciaTriePolicy::getTerminalNodePositionOfWord(
const BinaryDictionaryInfo *const binaryDictionaryInfo, const int *const inWord,
const int length, const bool forceLowerCaseSearch) const {
return BinaryFormat::getTerminalPosition(binaryDictionaryInfo->getDictRoot(), inWord,
length, forceLowerCaseSearch);
}
int PatriciaTriePolicy::getUnigramProbability(
const BinaryDictionaryInfo *const binaryDictionaryInfo, const int nodePos) const {
const uint8_t *const root = binaryDictionaryInfo->getDictRoot();
int pos = nodePos;
const uint8_t flags = BinaryFormat::getFlagsAndForwardPointer(root, &pos);
if (flags & (BinaryFormat::FLAG_IS_BLACKLISTED | BinaryFormat::FLAG_IS_NOT_A_WORD)) {
// If this is not a word, or if it's a blacklisted entry, it should behave as
// having no probability outside of the suggestion process (where it should be used
// for shortcuts).
return NOT_A_PROBABILITY;
}
const bool hasMultipleChars = (0 != (BinaryFormat::FLAG_HAS_MULTIPLE_CHARS & flags));
if (hasMultipleChars) {
pos = BinaryFormat::skipOtherCharacters(root, pos);
} else {
BinaryFormat::getCodePointAndForwardPointer(root, &pos);
}
return BinaryFormat::readProbabilityWithoutMovingPointer(root, pos);
}
} // namespace latinime

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@ -0,0 +1,58 @@
/*
* Copyright (C) 2013, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef LATINIME_PATRICIA_TRIE_POLICY_H
#define LATINIME_PATRICIA_TRIE_POLICY_H
#include "defines.h"
#include "suggest/core/policy/dictionary_structure_policy.h"
namespace latinime {
class PatriciaTriePolicy : public DictionaryStructurePolicy {
public:
static AK_FORCE_INLINE const PatriciaTriePolicy *getInstance() {
return &sInstance;
}
AK_FORCE_INLINE int getRootPosition() const {
return 0;
}
void createAndGetAllChildNodes(const DicNode *const dicNode,
const BinaryDictionaryInfo *const binaryDictionaryInfo,
const NodeFilter *const nodeFilter, DicNodeVector *const childDicNodes) const;
void getWordAtPosition(const BinaryDictionaryInfo *const binaryDictionaryInfo,
const int terminalNodePos, const int maxDepth, int *const outWord,
int *const outUnigramProbability) const;
int getTerminalNodePositionOfWord(
const BinaryDictionaryInfo *const binaryDictionaryInfo, const int *const inWord,
const int length, const bool forceLowerCaseSearch) const;
int getUnigramProbability(const BinaryDictionaryInfo *const binaryDictionaryInfo,
const int nodePos) const;
private:
DISALLOW_COPY_AND_ASSIGN(PatriciaTriePolicy);
static const PatriciaTriePolicy sInstance;
PatriciaTriePolicy() {}
~PatriciaTriePolicy() {}
};
} // namespace latinime
#endif // LATINIME_PATRICIA_TRIE_POLICY_H