NgramContext.java revision d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8
183c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi/* 283c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi * Copyright (C) 2014 The Android Open Source Project 383c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi * 483c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi * Licensed under the Apache License, Version 2.0 (the "License"); 583c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi * you may not use this file except in compliance with the License. 683c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi * You may obtain a copy of the License at 783c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi * 883c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi * http://www.apache.org/licenses/LICENSE-2.0 983c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi * 1083c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi * Unless required by applicable law or agreed to in writing, software 1183c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi * distributed under the License is distributed on an "AS IS" BASIS, 1283c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1383c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi * See the License for the specific language governing permissions and 1483c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi * limitations under the License. 1583c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi */ 1683c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi 1783c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagipackage com.android.inputmethod.latin; 1883c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi 1986f36003fd4397143bd37938dda029e5707634afYohei Yukawaimport android.text.TextUtils; 20e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 21bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagiimport com.android.inputmethod.annotations.UsedForTesting; 22e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagiimport com.android.inputmethod.latin.utils.StringUtils; 23e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 2486f36003fd4397143bd37938dda029e5707634afYohei Yukawaimport java.util.Arrays; 2586f36003fd4397143bd37938dda029e5707634afYohei Yukawa 26d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8Tadashi G. Takaokaimport javax.annotation.Nonnull; 27d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8Tadashi G. Takaoka 28a790c5b68324da41428aeb68594d43ca5632f66dKeisuke Kuroyanagi/** 29a790c5b68324da41428aeb68594d43ca5632f66dKeisuke Kuroyanagi * Class to represent information of previous words. This class is used to add n-gram entries 30a790c5b68324da41428aeb68594d43ca5632f66dKeisuke Kuroyanagi * into binary dictionaries, to get predictions, and to get suggestions. 31a790c5b68324da41428aeb68594d43ca5632f66dKeisuke Kuroyanagi */ 32bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagipublic class NgramContext { 33d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8Tadashi G. Takaoka @Nonnull 34bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi public static final NgramContext EMPTY_PREV_WORDS_INFO = 35bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi new NgramContext(WordInfo.EMPTY_WORD_INFO); 36d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8Tadashi G. Takaoka @Nonnull 37bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi public static final NgramContext BEGINNING_OF_SENTENCE = 385f00fe09e9a611b647592188316e5999465df4d3Tadashi G. Takaoka new NgramContext(WordInfo.BEGINNING_OF_SENTENCE_WORD_INFO); 391adca93381d261a6070be2721dbf8b8abafbfe01Keisuke Kuroyanagi 40e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi /** 41e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi * Word information used to represent previous words information. 42e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi */ 43e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi public static class WordInfo { 44d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8Tadashi G. Takaoka @Nonnull 45e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi public static final WordInfo EMPTY_WORD_INFO = new WordInfo(null); 46d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8Tadashi G. Takaoka @Nonnull 475f00fe09e9a611b647592188316e5999465df4d3Tadashi G. Takaoka public static final WordInfo BEGINNING_OF_SENTENCE_WORD_INFO = new WordInfo(); 48e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 4986f36003fd4397143bd37938dda029e5707634afYohei Yukawa // This is an empty char sequence when mIsBeginningOfSentence is true. 5086f36003fd4397143bd37938dda029e5707634afYohei Yukawa public final CharSequence mWord; 51e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // TODO: Have sentence separator. 52e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // Whether the current context is beginning of sentence or not. This is true when composing 53e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // at the beginning of an input field or composing a word after a sentence separator. 54e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi public final boolean mIsBeginningOfSentence; 55e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 56e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // Beginning of sentence. 575f00fe09e9a611b647592188316e5999465df4d3Tadashi G. Takaoka private WordInfo() { 58e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi mWord = ""; 59e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi mIsBeginningOfSentence = true; 60e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 61e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 6286f36003fd4397143bd37938dda029e5707634afYohei Yukawa public WordInfo(final CharSequence word) { 63e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi mWord = word; 64e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi mIsBeginningOfSentence = false; 65e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 66e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 67e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi public boolean isValid() { 68e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi return mWord != null; 69e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 701c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi 711c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi @Override 721c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi public int hashCode() { 731c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi return Arrays.hashCode(new Object[] { mWord, mIsBeginningOfSentence } ); 741c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi } 751c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi 761c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi @Override 771c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi public boolean equals(Object o) { 781c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi if (this == o) return true; 791c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi if (!(o instanceof WordInfo)) return false; 801c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi final WordInfo wordInfo = (WordInfo)o; 811c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi if (mWord == null || wordInfo.mWord == null) { 821c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi return mWord == wordInfo.mWord 831c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi && mIsBeginningOfSentence == wordInfo.mIsBeginningOfSentence; 841c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi } 8586f36003fd4397143bd37938dda029e5707634afYohei Yukawa return TextUtils.equals(mWord, wordInfo.mWord) 861c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi && mIsBeginningOfSentence == wordInfo.mIsBeginningOfSentence; 871c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi } 88e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 8983c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi 90e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // The words immediately before the considered word. EMPTY_WORD_INFO element means we don't 91e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // have any context for that previous word including the "beginning of sentence context" - we 92e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // just don't know what to predict using the information. An example of that is after a comma. 93e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // For simplicity of implementation, elements may also be EMPTY_WORD_INFO transiently after the 94e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // WordComposer was reset and before starting a new composing word, but we should never be 95e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // calling getSuggetions* in this situation. 96bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi private final WordInfo[] mPrevWordsInfo; 97bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi private final int mPrevWordsCount; 9817f326b7458c2bde2569e283a96e703755485328Keisuke Kuroyanagi 99e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // Construct from the previous word information. 100bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi public NgramContext(final WordInfo... prevWordsInfo) { 101bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi mPrevWordsInfo = prevWordsInfo; 102bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi mPrevWordsCount = prevWordsInfo.length; 103e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 104e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 105e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // Create next prevWordsInfo using current prevWordsInfo. 106d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8Tadashi G. Takaoka @Nonnull 107bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi public NgramContext getNextNgramContext(final WordInfo wordInfo) { 1084466464c24d6c6523f170f56b7e65e43ceb699e2Keisuke Kuroyanagi final int nextPrevWordCount = Math.min(Constants.MAX_PREV_WORD_COUNT_FOR_N_GRAM, 109bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi mPrevWordsCount + 1); 1104466464c24d6c6523f170f56b7e65e43ceb699e2Keisuke Kuroyanagi final WordInfo[] prevWordsInfo = new WordInfo[nextPrevWordCount]; 111e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi prevWordsInfo[0] = wordInfo; 112bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi System.arraycopy(mPrevWordsInfo, 0, prevWordsInfo, 1, nextPrevWordCount - 1); 113bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi return new NgramContext(prevWordsInfo); 11483c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi } 1151adca93381d261a6070be2721dbf8b8abafbfe01Keisuke Kuroyanagi 1161adca93381d261a6070be2721dbf8b8abafbfe01Keisuke Kuroyanagi public boolean isValid() { 117bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi return mPrevWordsCount > 0 && mPrevWordsInfo[0].isValid(); 118bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi } 119bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi 120bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi public boolean isBeginningOfSentenceContext() { 121bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi return mPrevWordsCount > 0 && mPrevWordsInfo[0].mIsBeginningOfSentence; 122bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi } 123bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi 124bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi // n is 1-indexed. 125bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi // TODO: Remove 126bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi public CharSequence getNthPrevWord(final int n) { 127bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi if (n <= 0 || n > mPrevWordsCount) { 128bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi return null; 129bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi } 130bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi return mPrevWordsInfo[n - 1].mWord; 131bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi } 132bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi 133bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi // n is 1-indexed. 134bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi @UsedForTesting 135bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi public boolean isNthPrevWordBeginningOfSontence(final int n) { 136bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi if (n <= 0 || n > mPrevWordsCount) { 137bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi return false; 138bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi } 139bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi return mPrevWordsInfo[n - 1].mIsBeginningOfSentence; 140e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 141e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 142e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi public void outputToArray(final int[][] codePointArrays, 143e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi final boolean[] isBeginningOfSentenceArray) { 144bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi for (int i = 0; i < mPrevWordsCount; i++) { 145e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi final WordInfo wordInfo = mPrevWordsInfo[i]; 146e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi if (wordInfo == null || !wordInfo.isValid()) { 147e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi codePointArrays[i] = new int[0]; 148e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi isBeginningOfSentenceArray[i] = false; 149e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi continue; 150e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 151e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi codePointArrays[i] = StringUtils.toCodePointArray(wordInfo.mWord); 152e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi isBeginningOfSentenceArray[i] = wordInfo.mIsBeginningOfSentence; 153e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 1541adca93381d261a6070be2721dbf8b8abafbfe01Keisuke Kuroyanagi } 155dfca51726e9dc9a35f462dee39331823eafa07c9Keisuke Kuroyanagi 1564466464c24d6c6523f170f56b7e65e43ceb699e2Keisuke Kuroyanagi public int getPrevWordCount() { 157bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi return mPrevWordsCount; 1584466464c24d6c6523f170f56b7e65e43ceb699e2Keisuke Kuroyanagi } 1594466464c24d6c6523f170f56b7e65e43ceb699e2Keisuke Kuroyanagi 160dfca51726e9dc9a35f462dee39331823eafa07c9Keisuke Kuroyanagi @Override 1611c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi public int hashCode() { 162c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi int hashValue = 0; 163c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi for (final WordInfo wordInfo : mPrevWordsInfo) { 164c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi if (wordInfo == null || !WordInfo.EMPTY_WORD_INFO.equals(wordInfo)) { 165c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi break; 166c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi } 167c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi hashValue ^= wordInfo.hashCode(); 168c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi } 169c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi return hashValue; 1701c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi } 1711c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi 1721c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi @Override 1731c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi public boolean equals(Object o) { 1741c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi if (this == o) return true; 175bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi if (!(o instanceof NgramContext)) return false; 176bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi final NgramContext prevWordsInfo = (NgramContext)o; 177845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi 178bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi final int minLength = Math.min(mPrevWordsCount, prevWordsInfo.mPrevWordsCount); 179845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi for (int i = 0; i < minLength; i++) { 180845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi if (!mPrevWordsInfo[i].equals(prevWordsInfo.mPrevWordsInfo[i])) { 181845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi return false; 182845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi } 183845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi } 184bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi final WordInfo[] longerWordsInfo; 185bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi final int longerWordsInfoCount; 186bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi if (mPrevWordsCount > prevWordsInfo.mPrevWordsCount) { 187bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi longerWordsInfo = mPrevWordsInfo; 188bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi longerWordsInfoCount = mPrevWordsCount; 189bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi } else { 190bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi longerWordsInfo = prevWordsInfo.mPrevWordsInfo; 191bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi longerWordsInfoCount = prevWordsInfo.mPrevWordsCount; 192bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi } 193bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi for (int i = minLength; i < longerWordsInfoCount; i++) { 194845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi if (longerWordsInfo[i] != null 195845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi && !WordInfo.EMPTY_WORD_INFO.equals(longerWordsInfo[i])) { 196845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi return false; 197845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi } 198845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi } 199845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi return true; 2001c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi } 2011c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi 2021c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi @Override 203dfca51726e9dc9a35f462dee39331823eafa07c9Keisuke Kuroyanagi public String toString() { 204e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi final StringBuffer builder = new StringBuffer(); 205bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi for (int i = 0; i < mPrevWordsCount; i++) { 206e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi final WordInfo wordInfo = mPrevWordsInfo[i]; 207e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append("PrevWord["); 208e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append(i); 209e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append("]: "); 210845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi if (wordInfo == null) { 211845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi builder.append("null. "); 212845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi continue; 213845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi } 214845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi if (!wordInfo.isValid()) { 215e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append("Empty. "); 216e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi continue; 217e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 218e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append(wordInfo.mWord); 219e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append(", isBeginningOfSentence: "); 220e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append(wordInfo.mIsBeginningOfSentence); 221e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append(". "); 222e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 223e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi return builder.toString(); 224dfca51726e9dc9a35f462dee39331823eafa07c9Keisuke Kuroyanagi } 22583c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi} 226