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/*
* 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.
*/
package com.android.inputmethod.latin.utils;
import com.android.inputmethod.annotations.UsedForTesting;
import com.android.inputmethod.latin.BinaryDictionary;
import com.android.inputmethod.latin.makedict.FusionDictionary.WeightedString;
import java.util.ArrayList;
// This has information that belong to a unigram. This class has some detailed attributes such as
// historical information but they have to be checked only for testing purpose.
@UsedForTesting
public class WordProperty {
public final String mCodePoints;
public final boolean mIsNotAWord;
public final boolean mIsBlacklisted;
public final boolean mHasBigrams;
public final boolean mHasShortcuts;
public final ProbabilityInfo mProbabilityInfo;
public final ArrayList<WeightedString> mBigramTargets = CollectionUtils.newArrayList();
public final ArrayList<ProbabilityInfo> mBigramProbabilityInfo = CollectionUtils.newArrayList();
public final ArrayList<WeightedString> mShortcutTargets = CollectionUtils.newArrayList();
// TODO: Use this kind of Probability class for dictionary read/write code under the makedict
// package.
public static final class ProbabilityInfo {
public final int mProbability;
// mTimestamp, mLevel and mCount are historical info. These values are depend on the
// implementation in native code; thus, we must not use them and have any assumptions about
// them except for tests.
public final int mTimestamp;
public final int mLevel;
public final int mCount;
public ProbabilityInfo(final int[] probabilityInfo) {
mProbability = probabilityInfo[BinaryDictionary.FORMAT_WORD_PROPERTY_PROBABILITY_INDEX];
mTimestamp = probabilityInfo[BinaryDictionary.FORMAT_WORD_PROPERTY_TIMESTAMP_INDEX];
mLevel = probabilityInfo[BinaryDictionary.FORMAT_WORD_PROPERTY_LEVEL_INDEX];
mCount = probabilityInfo[BinaryDictionary.FORMAT_WORD_PROPERTY_COUNT_INDEX];
}
@Override
public String toString() {
return mTimestamp + ":" + mLevel + ":" + mCount;
}
}
private static int getCodePointCount(final int[] codePoints) {
for (int i = 0; i < codePoints.length; i++) {
if (codePoints[i] == 0) {
return i;
}
}
return codePoints.length;
}
// This represents invalid word when the probability is BinaryDictionary.NOT_A_PROBABILITY.
public WordProperty(final int[] codePoints, final boolean isNotAWord,
final boolean isBlacklisted, final boolean hasBigram,
final boolean hasShortcuts, final int[] probabilityInfo,
final ArrayList<int[]> bigramTargets, final ArrayList<int[]> bigramProbabilityInfo,
final ArrayList<int[]> shortcutTargets,
final ArrayList<Integer> shortcutProbabilities) {
mCodePoints = new String(codePoints, 0 /* offset */, getCodePointCount(codePoints));
mIsNotAWord = isNotAWord;
mIsBlacklisted = isBlacklisted;
mHasBigrams = hasBigram;
mHasShortcuts = hasShortcuts;
mProbabilityInfo = new ProbabilityInfo(probabilityInfo);
final int bigramTargetCount = bigramTargets.size();
for (int i = 0; i < bigramTargetCount; i++) {
final int[] bigramTargetCodePointArray = bigramTargets.get(i);
final String bigramTargetString = new String(bigramTargetCodePointArray,
0 /* offset */, getCodePointCount(bigramTargetCodePointArray));
final ProbabilityInfo bigramProbability =
new ProbabilityInfo(bigramProbabilityInfo.get(i));
mBigramTargets.add(
new WeightedString(bigramTargetString, bigramProbability.mProbability));
mBigramProbabilityInfo.add(bigramProbability);
}
final int shortcutTargetCount = shortcutTargets.size();
for (int i = 0; i < shortcutTargetCount; i++) {
final int[] shortcutTargetCodePointArray = shortcutTargets.get(i);
final String shortcutTargetString = new String(shortcutTargetCodePointArray,
0 /* offset */, getCodePointCount(shortcutTargetCodePointArray));
mShortcutTargets.add(
new WeightedString(shortcutTargetString, shortcutProbabilities.get(i)));
}
}
@UsedForTesting
public boolean isValid() {
return mProbabilityInfo.mProbability != BinaryDictionary.NOT_A_PROBABILITY;
}
@Override
public String toString() {
// TODO: Move this logic to CombinedInputOutput.
final StringBuffer builder = new StringBuffer();
builder.append(" word=" + mCodePoints);
builder.append(",");
builder.append("f=" + mProbabilityInfo.mProbability);
if (mIsNotAWord) {
builder.append(",");
builder.append("not_a_word=true");
}
if (mIsBlacklisted) {
builder.append(",");
builder.append("blacklisted=true");
}
if (mProbabilityInfo.mTimestamp != BinaryDictionary.NOT_A_VALID_TIMESTAMP) {
builder.append(",");
builder.append("historicalInfo=" + mProbabilityInfo);
}
builder.append("\n");
for (int i = 0; i < mBigramTargets.size(); i++) {
builder.append(" bigram=" + mBigramTargets.get(i).mWord);
builder.append(",");
builder.append("f=" + mBigramTargets.get(i).mFrequency);
if (mBigramProbabilityInfo.get(i).mTimestamp
!= BinaryDictionary.NOT_A_VALID_TIMESTAMP) {
builder.append(",");
builder.append("historicalInfo=" + mBigramProbabilityInfo.get(i));
}
builder.append("\n");
}
for (int i = 0; i < mShortcutTargets.size(); i++) {
builder.append(" shortcut=" + mShortcutTargets.get(i).mWord);
builder.append(",");
builder.append("f=" + mShortcutTargets.get(i).mFrequency);
builder.append("\n");
}
return builder.toString();
}
}
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