org.snapscript.dx.io.instructions.AddressMap Maven / Gradle / Ivy
/*
* Copyright (C) 2011 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 org.snapscript.dx.io.instructions;
import java.util.HashMap;
/**
* Map from addresses to addresses, where addresses are all
* {@code int}s.
*/
public final class AddressMap {
/** underlying map. TODO: This might be too inefficient. */
private final HashMap map;
/**
* Constructs an instance.
*/
public AddressMap() {
map = new HashMap();
}
/**
* Gets the value address corresponding to the given key address. Returns
* {@code -1} if there is no mapping.
*/
public int get(int keyAddress) {
Integer value = map.get(keyAddress);
return (value == null) ? -1 : value;
}
/**
* Sets the value address associated with the given key address.
*/
public void put(int keyAddress, int valueAddress) {
map.put(keyAddress, valueAddress);
}
}