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Merge "Use a TreeSet to sort suggestions instead of doing it by hand (A1)"

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This commit is contained in:
Jean Chalard 2012-06-28 03:08:26 -07:00 committed by Android (Google) Code Review
commit 09b30ac954
2 changed files with 57 additions and 28 deletions
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49
java/src/com/android/inputmethod/latin/BoundedTreeSet.java Normal file
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@ -0,0 +1,49 @@
/*
* Copyright (C) 2012 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;
import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo;
import java.util.Collection;
import java.util.Comparator;
import java.util.TreeSet;
/**
* A TreeSet that is bounded in size and throws everything that's smaller than its limit
*/
public class BoundedTreeSet extends TreeSet<SuggestedWordInfo> {
private final int mCapacity;
public BoundedTreeSet(final Comparator<SuggestedWordInfo> comparator, final int capacity) {
super(comparator);
mCapacity = capacity;
}
@Override
public boolean add(final SuggestedWordInfo e) {
if (size() < mCapacity) return super.add(e);
if (comparator().compare(e, last()) > 0) return false;
super.add(e);
pollLast(); // removes the last element
return true;
}
@Override
public boolean addAll(final Collection<? extends SuggestedWordInfo> e) {
if (null == e) return false;
return super.addAll(e);
}
}

36
java/src/com/android/inputmethod/latin/Suggest.java
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@ -26,7 +26,6 @@ import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo;
import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.Locale;
@ -190,8 +189,8 @@ public class Suggest {
!isPrediction && wordComposer.isFirstCharCapitalized();
final boolean isAllUpperCase = !isPrediction && wordComposer.isAllUpperCase();
final int trailingSingleQuotesCount = wordComposer.trailingSingleQuotesCount();
final ArrayList<SuggestedWordInfo> suggestionsContainer =
new ArrayList<SuggestedWordInfo>(MAX_SUGGESTIONS);
final BoundedTreeSet suggestionsSet = new BoundedTreeSet(sSuggestedWordInfoComparator,
MAX_SUGGESTIONS);
final String typedWord = wordComposer.getTypedWord();
final String consideredWord = trailingSingleQuotesCount > 0
@ -211,13 +210,9 @@ public class Suggest {
}
for (final String key : mDictionaries.keySet()) {
final Dictionary dictionary = mDictionaries.get(key);
final ArrayList<SuggestedWordInfo> localSuggestions =
dictionary.getBigrams(wordComposer, prevWordForBigram);
suggestionsSet.addAll(dictionary.getBigrams(wordComposer, prevWordForBigram));
if (null != lowerPrevWord) {
localSuggestions.addAll(dictionary.getBigrams(wordComposer, lowerPrevWord));
}
for (final SuggestedWordInfo localSuggestion : localSuggestions) {
addWord(localSuggestion, suggestionsContainer);
suggestionsSet.addAll(dictionary.getBigrams(wordComposer, lowerPrevWord));
}
}
}
@ -238,14 +233,13 @@ public class Suggest {
|| key.equals(Dictionary.TYPE_WHITELIST))
continue;
final Dictionary dictionary = mDictionaries.get(key);
final ArrayList<SuggestedWordInfo> localSuggestions = dictionary.getWords(
wordComposerForLookup, prevWordForBigram, proximityInfo);
for (final SuggestedWordInfo suggestion : localSuggestions) {
addWord(suggestion, suggestionsContainer);
}
suggestionsSet.addAll(dictionary.getWords(
wordComposerForLookup, prevWordForBigram, proximityInfo));
}
}
final ArrayList<SuggestedWordInfo> suggestionsContainer =
new ArrayList<SuggestedWordInfo>(suggestionsSet);
for (int i = 0; i < suggestionsContainer.size(); ++i) {
final SuggestedWordInfo wordInfo = suggestionsContainer.get(i);
final SuggestedWordInfo transformedWordInfo = getTransformedSuggestedWordInfo(wordInfo,
@ -375,20 +369,6 @@ public class Suggest {
private static final SuggestedWordInfoComparator sSuggestedWordInfoComparator =
new SuggestedWordInfoComparator();
private static void addWord(final SuggestedWordInfo wordInfo,
final ArrayList<SuggestedWordInfo> suggestions) {
final int index =
Collections.binarySearch(suggestions, wordInfo, sSuggestedWordInfoComparator);
// binarySearch returns the index of an equal word info if found. If not found
// it returns -insertionPoint - 1. We want the insertion point, so:
final int pos = index >= 0 ? index : -index - 1;
if (pos >= MAX_SUGGESTIONS) return;
suggestions.add(pos, wordInfo);
if (suggestions.size() > MAX_SUGGESTIONS) {
suggestions.remove(MAX_SUGGESTIONS);
}
}
private static SuggestedWordInfo getTransformedSuggestedWordInfo(
final SuggestedWordInfo wordInfo, final Locale locale, final boolean isAllUpperCase,
final boolean isFirstCharCapitalized, final int trailingSingleQuotesCount) {