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DynamicPatriciaTrieWritingUtils to write PtNodes. 

Bug: 6669677
Change-Id: I67cce3c1d338cf747ed2204c96768907d990d269
main
Keisuke Kuroyanagi 2013-09-05 20:09:38 +09:00
parent b1af47c8fe
commit 96a0631664
5 changed files with 206 additions and 1 deletions
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1
native/jni/Android.mk
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@ -78,6 +78,7 @@ LATIN_IME_CORE_SRC_FILES := \
dynamic_patricia_trie_reading_helper.cpp \
dynamic_patricia_trie_reading_utils.cpp \
dynamic_patricia_trie_writing_helper.cpp \
dynamic_patricia_trie_writing_utils.cpp \
patricia_trie_policy.cpp \
patricia_trie_reading_utils.cpp) \
$(addprefix suggest/policyimpl/dictionary/utils/, \

2
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_helper.cpp
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@ -72,7 +72,7 @@ void DynamicPatriciaTrieReadingHelper::followForwardLink() {
}
if (DynamicPatriciaTrieReadingUtils::isValidForwardLinkPosition(forwardLinkPosition)) {
// Follow the forward link.
mPos = forwardLinkPosition;
mPos += forwardLinkPosition;
nextNodeArray();
} else {
// All node arrays have been read.

1
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_writing_helper.cpp
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@ -19,6 +19,7 @@
#include "suggest/policyimpl/dictionary/bigram/dynamic_bigram_list_policy.h"
#include "suggest/policyimpl/dictionary/dynamic_patricia_trie_node_reader.h"
#include "suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_helper.h"
#include "suggest/policyimpl/dictionary/dynamic_patricia_trie_writing_utils.h"
#include "suggest/policyimpl/dictionary/shortcut/dynamic_shortcut_list_policy.h"
namespace latinime {

130
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_writing_utils.cpp Normal file
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@ -0,0 +1,130 @@
/*
* 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/dynamic_patricia_trie_writing_utils.h"
#include <cstddef>
#include <cstdlib>
#include <stdint.h>
#include "suggest/policyimpl/dictionary/utils/buffer_with_extendable_buffer.h"
namespace latinime {
const size_t DynamicPatriciaTrieWritingUtils::MAX_PTNODE_ARRAY_SIZE_TO_USE_SMALL_SIZE_FIELD = 0x7F;
const size_t DynamicPatriciaTrieWritingUtils::MAX_PTNODE_ARRAY_SIZE = 0x7FFF;
const int DynamicPatriciaTrieWritingUtils::SMALL_PTNODE_ARRAY_SIZE_FIELD_SIZE = 1;
const int DynamicPatriciaTrieWritingUtils::LARGE_PTNODE_ARRAY_SIZE_FIELD_SIZE = 2;
const int DynamicPatriciaTrieWritingUtils::LARGE_PTNODE_ARRAY_SIZE_FIELD_SIZE_FLAG = 0x8000;
const int DynamicPatriciaTrieWritingUtils::DICT_OFFSET_FIELD_SIZE = 3;
const int DynamicPatriciaTrieWritingUtils::MAX_DICT_OFFSET_VALUE = 0x7FFFFF;
const int DynamicPatriciaTrieWritingUtils::MIN_DICT_OFFSET_VALUE = -0x7FFFFF;
const int DynamicPatriciaTrieWritingUtils::DICT_OFFSET_NEGATIVE_FLAG = 0x800000;
const int DynamicPatriciaTrieWritingUtils::PROBABILITY_FIELD_SIZE = 1;
const int DynamicPatriciaTrieWritingUtils::NODE_FLAG_FIELD_SIZE = 1;
/* static */ bool DynamicPatriciaTrieWritingUtils::writeForwardLinkPositionAndAdvancePosition(
BufferWithExtendableBuffer *const buffer, const int forwardLinkPos,
int *const forwardLinkFieldPos) {
const int offset = (forwardLinkPos != NOT_A_DICT_POS) ?
forwardLinkPos - (*forwardLinkFieldPos) : 0;
return writeDictOffset(buffer, offset, forwardLinkFieldPos);
}
/* static */ bool DynamicPatriciaTrieWritingUtils::writePtNodeArraySizeAndAdvancePosition(
BufferWithExtendableBuffer *const buffer, const size_t arraySize,
int *const arraySizeFieldPos) {
if (arraySize <= MAX_PTNODE_ARRAY_SIZE_TO_USE_SMALL_SIZE_FIELD) {
return buffer->writeUintAndAdvancePosition(arraySize, SMALL_PTNODE_ARRAY_SIZE_FIELD_SIZE,
arraySizeFieldPos);
} else if (arraySize <= MAX_PTNODE_ARRAY_SIZE) {
uint32_t data = arraySize | LARGE_PTNODE_ARRAY_SIZE_FIELD_SIZE_FLAG;
return buffer->writeUintAndAdvancePosition(data, LARGE_PTNODE_ARRAY_SIZE_FIELD_SIZE,
arraySizeFieldPos);
} else {
AKLOGI("PtNode array size cannot be written because arraySize is too large: %zd",
arraySize);
ASSERT(false);
return false;
}
}
/* static */ bool DynamicPatriciaTrieWritingUtils::writeFlagsAndAdvancePosition(
BufferWithExtendableBuffer *const buffer,
const DynamicPatriciaTrieReadingUtils::NodeFlags nodeFlags, int *const nodeFlagsFieldPos) {
return buffer->writeUintAndAdvancePosition(nodeFlags, NODE_FLAG_FIELD_SIZE, nodeFlagsFieldPos);
}
/* static */ bool DynamicPatriciaTrieWritingUtils::writeParentPositionAndAdvancePosition(
BufferWithExtendableBuffer *const buffer, const int parentPosition,
int *const parentPosFieldPos) {
// Note that parentPosition is offset from node's head position.
int offset = (parentPosition != NOT_A_DICT_POS) ? parentPosition : 0;
return writeDictOffset(buffer, offset, parentPosFieldPos);
}
/* static */ bool DynamicPatriciaTrieWritingUtils::writeCodePointsAndAdvancePosition(
BufferWithExtendableBuffer *const buffer, const int *const codePoints,
const int codePointCount, int *const codePointFieldPos) {
if (codePointCount <= 0) {
AKLOGI("code points cannot be written because codePointCount is invalid: %d",
codePointCount);
ASSERT(false);
return false;
}
const bool hasMultipleCodePoints = codePointCount > 1;
return buffer->writeCodePointsAndAdvancePosition(codePoints, codePointCount,
hasMultipleCodePoints, codePointFieldPos);
}
/* static */ bool DynamicPatriciaTrieWritingUtils::writeProbabilityAndAdvancePosition(
BufferWithExtendableBuffer *const buffer, const int probability,
int *const probabilityFieldPos) {
if (probability < 0 || probability > MAX_PROBABILITY) {
AKLOGI("probability cannot be written because the probability is invalid: %d",
probability);
ASSERT(false);
return false;
}
return buffer->writeUintAndAdvancePosition(probability, PROBABILITY_FIELD_SIZE,
probabilityFieldPos);
}
/* static */ bool DynamicPatriciaTrieWritingUtils::writeChildrenPositionAndAdvancePosition(
BufferWithExtendableBuffer *const buffer, const int childrenPosition,
int *const childrenPositionFieldPos) {
int offset = (childrenPosition != NOT_A_DICT_POS) ?
childrenPosition - (*childrenPositionFieldPos) : 0;
return writeDictOffset(buffer, offset, childrenPositionFieldPos);
}
/* static */ bool DynamicPatriciaTrieWritingUtils::writeDictOffset(
BufferWithExtendableBuffer *const buffer, const int offset, int *const offsetFieldPos) {
if (offset > MAX_DICT_OFFSET_VALUE || offset < MIN_DICT_OFFSET_VALUE) {
AKLOGI("offset cannot be written because the offset is too large or too small: %d",
offset);
ASSERT(false);
return false;
}
uint32_t data = 0;
if (offset >= 0) {
data = offset;
} else {
data = abs(offset) | DICT_OFFSET_NEGATIVE_FLAG;
}
return buffer->writeUintAndAdvancePosition(data, DICT_OFFSET_FIELD_SIZE, offsetFieldPos);
}
}

73
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_writing_utils.h Normal file
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@ -0,0 +1,73 @@
/*
* 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_DYNAMIC_PATRICIA_TRIE_WRITING_UTILS_H
#define LATINIME_DYNAMIC_PATRICIA_TRIE_WRITING_UTILS_H
#include <cstddef>
#include "defines.h"
#include "suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_utils.h"
namespace latinime {
class BufferWithExtendableBuffer;
class DynamicPatriciaTrieWritingUtils {
public:
static bool writeForwardLinkPositionAndAdvancePosition(
BufferWithExtendableBuffer *const buffer, const int forwardLinkPos,
int *const forwardLinkFieldPos);
static bool writePtNodeArraySizeAndAdvancePosition(BufferWithExtendableBuffer *const buffer,
const size_t arraySize, int *const arraySizeFieldPos);
static bool writeFlagsAndAdvancePosition(BufferWithExtendableBuffer *const buffer,
const DynamicPatriciaTrieReadingUtils::NodeFlags nodeFlags,
int *const nodeFlagsFieldPos);
static bool writeParentPositionAndAdvancePosition(BufferWithExtendableBuffer *const buffer,
const int parentPosition, int *const parentPosFieldPos);
static bool writeCodePointsAndAdvancePosition(BufferWithExtendableBuffer *const buffer,
const int *const codePoints, const int codePointCount, int *const codePointFieldPos);
static bool writeProbabilityAndAdvancePosition(BufferWithExtendableBuffer *const buffer,
const int probability, int *const probabilityFieldPos);
static bool writeChildrenPositionAndAdvancePosition(BufferWithExtendableBuffer *const buffer,
const int childrenPosition, int *const childrenPositionFieldPos);
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(DynamicPatriciaTrieWritingUtils);
static const size_t MAX_PTNODE_ARRAY_SIZE_TO_USE_SMALL_SIZE_FIELD;
static const size_t MAX_PTNODE_ARRAY_SIZE;
static const int SMALL_PTNODE_ARRAY_SIZE_FIELD_SIZE;
static const int LARGE_PTNODE_ARRAY_SIZE_FIELD_SIZE;
static const int LARGE_PTNODE_ARRAY_SIZE_FIELD_SIZE_FLAG;
static const int DICT_OFFSET_FIELD_SIZE;
static const int MAX_DICT_OFFSET_VALUE;
static const int MIN_DICT_OFFSET_VALUE;
static const int DICT_OFFSET_NEGATIVE_FLAG;
static const int NODE_FLAG_FIELD_SIZE;
static const int PROBABILITY_FIELD_SIZE;
static bool writeDictOffset(BufferWithExtendableBuffer *const buffer, const int offset,
int *const offsetFieldPos);
};
} // namespace latinime
#endif /* LATINIME_DYNAMIC_PATRICIA_TRIE_WRITING_UTILS_H */