| /* |
| * Copyright (C) 2008 Esmertec AG. |
| * Copyright (C) 2008 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.im.app; |
| |
| public class IntTrie { |
| private Node mHead; |
| |
| class Node { |
| private Node mFirstChild; |
| private Node mNextSibling; |
| private char mKey; |
| int mValue; |
| |
| public final void add(String key, int value) { |
| final int len = key.length(); |
| Node n = this; |
| int index = 0; |
| |
| while (index < len) { |
| n = n.getOrCreateNode(key.charAt(index++)); |
| } |
| |
| n.mValue = value; |
| } |
| |
| private Node getOrCreateNode(char key) { |
| for (Node n = mFirstChild; n != null; n = n.mNextSibling) { |
| if (n.mKey == key) { |
| return n; |
| } |
| } |
| |
| Node n = new Node(); |
| |
| n.mKey = key; |
| n.mNextSibling = mFirstChild; |
| mFirstChild = n; |
| |
| return n; |
| } |
| |
| Node getNode(char key) { |
| for (Node n = mFirstChild; n != null; n = n.mNextSibling) { |
| if (n.mKey == key) { |
| return n; |
| } |
| } |
| |
| return null; |
| } |
| } |
| |
| public IntTrie(String[] dictionary, int[] values) { |
| final int len = dictionary.length; |
| |
| if (len != values.length) { |
| throw new IllegalArgumentException("dictionary[] and values[] must be the same length"); |
| } |
| |
| mHead = new Node(); |
| |
| for (int i = 0; i < len; i++) { |
| mHead.add(dictionary[i], values[i]); |
| } |
| } |
| |
| public Node getNode(char key) { |
| return mHead.getNode(key); |
| } |
| } |