1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.dx.io.instructions; 18 19 import java.util.HashMap; 20 21 /** 22 * Map from addresses to addresses, where addresses are all 23 * {@code int}s. 24 */ 25 public final class AddressMap { 26 /** underlying map. TODO: This might be too inefficient. */ 27 private final HashMap<Integer,Integer> map; 28 29 /** 30 * Constructs an instance. 31 */ 32 public AddressMap() { 33 map = new HashMap<Integer,Integer>(); 34 } 35 36 /** 37 * Gets the value address corresponding to the given key address. Returns 38 * {@code -1} if there is no mapping. 39 */ 40 public int get(int keyAddress) { 41 Integer value = map.get(keyAddress); 42 return (value == null) ? -1 : value; 43 } 44 45 /** 46 * Sets the value address associated with the given key address. 47 */ 48 public void put(int keyAddress, int valueAddress) { 49 map.put(keyAddress, valueAddress); 50 } 51 } 52
