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.io.EOFException; 20 import java.util.HashMap; 21 22 /** 23 * Map from addresses to addresses, where addresses are all 24 * {@code int}s. 25 */ 26 public final class AddressMap { 27 /** underlying map. TODO: This might be too inefficient. */ 28 private final HashMap<Integer,Integer> map; 29 30 /** 31 * Constructs an instance. 32 */ AddressMap()33 public AddressMap() { 34 map = new HashMap<Integer,Integer>(); 35 } 36 37 /** 38 * Gets the value address corresponding to the given key address. Returns 39 * {@code -1} if there is no mapping. 40 */ get(int keyAddress)41 public int get(int keyAddress) { 42 Integer value = map.get(keyAddress); 43 return (value == null) ? -1 : value; 44 } 45 46 /** 47 * Sets the value address associated with the given key address. 48 */ put(int keyAddress, int valueAddress)49 public void put(int keyAddress, int valueAddress) { 50 map.put(keyAddress, valueAddress); 51 } 52 } 53