NgramContext.java revision 11a3965f8c376db4d8fbdf3c6ea6ac54550ae6ed
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; 229342484e8d573a40f470b6a593df31c602fa4076Ken Wakasaimport com.android.inputmethod.latin.common.Constants; 234beeb9253a06482299e0c67467531d30436a02fcJean Chalardimport com.android.inputmethod.latin.common.StringUtils; 24e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 2586f36003fd4397143bd37938dda029e5707634afYohei Yukawaimport java.util.Arrays; 2686f36003fd4397143bd37938dda029e5707634afYohei Yukawa 27d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8Tadashi G. Takaokaimport javax.annotation.Nonnull; 28d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8Tadashi G. Takaoka 29a790c5b68324da41428aeb68594d43ca5632f66dKeisuke Kuroyanagi/** 30a790c5b68324da41428aeb68594d43ca5632f66dKeisuke Kuroyanagi * Class to represent information of previous words. This class is used to add n-gram entries 31a790c5b68324da41428aeb68594d43ca5632f66dKeisuke Kuroyanagi * into binary dictionaries, to get predictions, and to get suggestions. 32a790c5b68324da41428aeb68594d43ca5632f66dKeisuke Kuroyanagi */ 33bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagipublic class NgramContext { 34d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8Tadashi G. Takaoka @Nonnull 35bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi public static final NgramContext EMPTY_PREV_WORDS_INFO = 36bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi new NgramContext(WordInfo.EMPTY_WORD_INFO); 37d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8Tadashi G. Takaoka @Nonnull 38bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi public static final NgramContext BEGINNING_OF_SENTENCE = 395f00fe09e9a611b647592188316e5999465df4d3Tadashi G. Takaoka new NgramContext(WordInfo.BEGINNING_OF_SENTENCE_WORD_INFO); 401adca93381d261a6070be2721dbf8b8abafbfe01Keisuke Kuroyanagi 41e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi /** 42e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi * Word information used to represent previous words information. 43e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi */ 44e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi public static class WordInfo { 45d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8Tadashi G. Takaoka @Nonnull 46e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi public static final WordInfo EMPTY_WORD_INFO = new WordInfo(null); 47d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8Tadashi G. Takaoka @Nonnull 485f00fe09e9a611b647592188316e5999465df4d3Tadashi G. Takaoka public static final WordInfo BEGINNING_OF_SENTENCE_WORD_INFO = new WordInfo(); 49e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 5086f36003fd4397143bd37938dda029e5707634afYohei Yukawa // This is an empty char sequence when mIsBeginningOfSentence is true. 5186f36003fd4397143bd37938dda029e5707634afYohei Yukawa public final CharSequence mWord; 52e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // TODO: Have sentence separator. 53e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // Whether the current context is beginning of sentence or not. This is true when composing 54e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // at the beginning of an input field or composing a word after a sentence separator. 55e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi public final boolean mIsBeginningOfSentence; 56e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 57e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // Beginning of sentence. 585f00fe09e9a611b647592188316e5999465df4d3Tadashi G. Takaoka private WordInfo() { 59e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi mWord = ""; 60e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi mIsBeginningOfSentence = true; 61e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 62e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 6386f36003fd4397143bd37938dda029e5707634afYohei Yukawa public WordInfo(final CharSequence word) { 64e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi mWord = word; 65e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi mIsBeginningOfSentence = false; 66e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 67e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 68e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi public boolean isValid() { 69e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi return mWord != null; 70e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 711c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi 721c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi @Override 731c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi public int hashCode() { 741c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi return Arrays.hashCode(new Object[] { mWord, mIsBeginningOfSentence } ); 751c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi } 761c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi 771c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi @Override 781c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi public boolean equals(Object o) { 791c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi if (this == o) return true; 801c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi if (!(o instanceof WordInfo)) return false; 811c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi final WordInfo wordInfo = (WordInfo)o; 821c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi if (mWord == null || wordInfo.mWord == null) { 831c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi return mWord == wordInfo.mWord 841c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi && mIsBeginningOfSentence == wordInfo.mIsBeginningOfSentence; 851c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi } 8686f36003fd4397143bd37938dda029e5707634afYohei Yukawa return TextUtils.equals(mWord, wordInfo.mWord) 871c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi && mIsBeginningOfSentence == wordInfo.mIsBeginningOfSentence; 881c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi } 89e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 9083c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi 91e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // The words immediately before the considered word. EMPTY_WORD_INFO element means we don't 92e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // have any context for that previous word including the "beginning of sentence context" - we 93e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // just don't know what to predict using the information. An example of that is after a comma. 94e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // For simplicity of implementation, elements may also be EMPTY_WORD_INFO transiently after the 95e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // WordComposer was reset and before starting a new composing word, but we should never be 96e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // calling getSuggetions* in this situation. 97bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi private final WordInfo[] mPrevWordsInfo; 98bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi private final int mPrevWordsCount; 9917f326b7458c2bde2569e283a96e703755485328Keisuke Kuroyanagi 100e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // Construct from the previous word information. 101bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi public NgramContext(final WordInfo... prevWordsInfo) { 102bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi mPrevWordsInfo = prevWordsInfo; 103bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi mPrevWordsCount = prevWordsInfo.length; 104e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 105e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 106e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi // Create next prevWordsInfo using current prevWordsInfo. 107d3a4c5132422b189c8dbb94dbbe84a9b9761b0a8Tadashi G. Takaoka @Nonnull 108bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi public NgramContext getNextNgramContext(final WordInfo wordInfo) { 1094466464c24d6c6523f170f56b7e65e43ceb699e2Keisuke Kuroyanagi final int nextPrevWordCount = Math.min(Constants.MAX_PREV_WORD_COUNT_FOR_N_GRAM, 110bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi mPrevWordsCount + 1); 1114466464c24d6c6523f170f56b7e65e43ceb699e2Keisuke Kuroyanagi final WordInfo[] prevWordsInfo = new WordInfo[nextPrevWordCount]; 112e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi prevWordsInfo[0] = wordInfo; 113bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi System.arraycopy(mPrevWordsInfo, 0, prevWordsInfo, 1, nextPrevWordCount - 1); 114bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi return new NgramContext(prevWordsInfo); 11583c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi } 1161adca93381d261a6070be2721dbf8b8abafbfe01Keisuke Kuroyanagi 1171adca93381d261a6070be2721dbf8b8abafbfe01Keisuke Kuroyanagi public boolean isValid() { 118bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi return mPrevWordsCount > 0 && mPrevWordsInfo[0].isValid(); 119bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi } 120bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi 121bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi public boolean isBeginningOfSentenceContext() { 122bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi return mPrevWordsCount > 0 && mPrevWordsInfo[0].mIsBeginningOfSentence; 123bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi } 124bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi 125bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi // n is 1-indexed. 126bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi // TODO: Remove 127bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi public CharSequence getNthPrevWord(final int n) { 128bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi if (n <= 0 || n > mPrevWordsCount) { 129bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi return null; 130bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi } 131bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi return mPrevWordsInfo[n - 1].mWord; 132bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi } 133bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi 134bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi // n is 1-indexed. 135bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi @UsedForTesting 13611a3965f8c376db4d8fbdf3c6ea6ac54550ae6edAdrian Velicu public boolean isNthPrevWordBeginningOfSentence(final int n) { 137bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi if (n <= 0 || n > mPrevWordsCount) { 138bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi return false; 139bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi } 140bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi return mPrevWordsInfo[n - 1].mIsBeginningOfSentence; 141e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 142e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi 143e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi public void outputToArray(final int[][] codePointArrays, 144e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi final boolean[] isBeginningOfSentenceArray) { 145bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi for (int i = 0; i < mPrevWordsCount; i++) { 146e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi final WordInfo wordInfo = mPrevWordsInfo[i]; 147e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi if (wordInfo == null || !wordInfo.isValid()) { 148e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi codePointArrays[i] = new int[0]; 149e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi isBeginningOfSentenceArray[i] = false; 150e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi continue; 151e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 152e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi codePointArrays[i] = StringUtils.toCodePointArray(wordInfo.mWord); 153e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi isBeginningOfSentenceArray[i] = wordInfo.mIsBeginningOfSentence; 154e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 1551adca93381d261a6070be2721dbf8b8abafbfe01Keisuke Kuroyanagi } 156dfca51726e9dc9a35f462dee39331823eafa07c9Keisuke Kuroyanagi 1574466464c24d6c6523f170f56b7e65e43ceb699e2Keisuke Kuroyanagi public int getPrevWordCount() { 158bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi return mPrevWordsCount; 1594466464c24d6c6523f170f56b7e65e43ceb699e2Keisuke Kuroyanagi } 1604466464c24d6c6523f170f56b7e65e43ceb699e2Keisuke Kuroyanagi 161dfca51726e9dc9a35f462dee39331823eafa07c9Keisuke Kuroyanagi @Override 1621c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi public int hashCode() { 163c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi int hashValue = 0; 164c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi for (final WordInfo wordInfo : mPrevWordsInfo) { 165c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi if (wordInfo == null || !WordInfo.EMPTY_WORD_INFO.equals(wordInfo)) { 166c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi break; 167c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi } 168c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi hashValue ^= wordInfo.hashCode(); 169c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi } 170c6a6f6a9905ab98516d944ac85933d016e4147fbKeisuke Kuroyanagi return hashValue; 1711c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi } 1721c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi 1731c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi @Override 1741c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi public boolean equals(Object o) { 1751c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi if (this == o) return true; 176bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi if (!(o instanceof NgramContext)) return false; 177bb0eca57054758ef17b032d2654c1fc5f6b32101Keisuke Kuroyanagi final NgramContext prevWordsInfo = (NgramContext)o; 178845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi 179bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi final int minLength = Math.min(mPrevWordsCount, prevWordsInfo.mPrevWordsCount); 180845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi for (int i = 0; i < minLength; i++) { 181845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi if (!mPrevWordsInfo[i].equals(prevWordsInfo.mPrevWordsInfo[i])) { 182845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi return false; 183845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi } 184845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi } 185bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi final WordInfo[] longerWordsInfo; 186bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi final int longerWordsInfoCount; 187bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi if (mPrevWordsCount > prevWordsInfo.mPrevWordsCount) { 188bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi longerWordsInfo = mPrevWordsInfo; 189bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi longerWordsInfoCount = mPrevWordsCount; 190bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi } else { 191bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi longerWordsInfo = prevWordsInfo.mPrevWordsInfo; 192bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi longerWordsInfoCount = prevWordsInfo.mPrevWordsCount; 193bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi } 194bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi for (int i = minLength; i < longerWordsInfoCount; i++) { 195845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi if (longerWordsInfo[i] != null 196845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi && !WordInfo.EMPTY_WORD_INFO.equals(longerWordsInfo[i])) { 197845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi return false; 198845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi } 199845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi } 200845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi return true; 2011c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi } 2021c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi 2031c2f1ada8305e36defa8572da687a4596bf083eaKeisuke Kuroyanagi @Override 204dfca51726e9dc9a35f462dee39331823eafa07c9Keisuke Kuroyanagi public String toString() { 205e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi final StringBuffer builder = new StringBuffer(); 206bbd6a26be025bc419e342e32d86629c4ebd68dd8Keisuke Kuroyanagi for (int i = 0; i < mPrevWordsCount; i++) { 207e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi final WordInfo wordInfo = mPrevWordsInfo[i]; 208e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append("PrevWord["); 209e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append(i); 210e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append("]: "); 211845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi if (wordInfo == null) { 212845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi builder.append("null. "); 213845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi continue; 214845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi } 215845c061970f0dcbe75eac028e142aa054f88e2a9Keisuke Kuroyanagi if (!wordInfo.isValid()) { 216e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append("Empty. "); 217e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi continue; 218e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 219e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append(wordInfo.mWord); 220e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append(", isBeginningOfSentence: "); 221e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append(wordInfo.mIsBeginningOfSentence); 222e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi builder.append(". "); 223e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi } 224e708b1bc2e11285ad404133b8de21719ce08acb5Keisuke Kuroyanagi return builder.toString(); 225dfca51726e9dc9a35f462dee39331823eafa07c9Keisuke Kuroyanagi } 22683c40a2301a0b5a42a75eecada48e7887a7c940eKeisuke Kuroyanagi} 227