| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.commons.compress.harmony.unpack200.bytecode; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.util.Objects; |
| |
| /** |
| * Abstract superclass for reference constant pool entries, such as a method or field reference. |
| */ |
| public abstract class CPRef extends ConstantPoolEntry { |
| |
| CPClass className; |
| transient int classNameIndex; |
| |
| protected CPNameAndType nameAndType; |
| transient int nameAndTypeIndex; |
| |
| protected String cachedToString; |
| |
| /** |
| * Constructs a new CPRef. |
| * |
| * @param type TODO |
| * @param className TODO |
| * @param descriptor TODO |
| * @param globalIndex index in CpBands |
| * @throws NullPointerException if descriptor or className is null |
| */ |
| public CPRef(final byte type, final CPClass className, final CPNameAndType descriptor, final int globalIndex) { |
| super(type, globalIndex); |
| this.className = Objects.requireNonNull(className, "className"); |
| this.nameAndType = Objects.requireNonNull(descriptor, "descriptor"); |
| } |
| |
| @Override |
| public boolean equals(final Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj == null) { |
| return false; |
| } |
| if (getClass() != obj.getClass()) { |
| return false; |
| } |
| if (this.hashCode() != obj.hashCode()) { |
| return false; |
| } |
| final CPRef other = (CPRef) obj; |
| if (!className.equals(other.className)) { |
| return false; |
| } |
| if (!nameAndType.equals(other.nameAndType)) { |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| protected ClassFileEntry[] getNestedClassFileEntries() { |
| final ClassFileEntry[] entries = new ClassFileEntry[2]; |
| entries[0] = className; |
| entries[1] = nameAndType; |
| return entries; |
| } |
| |
| @Override |
| protected void resolve(final ClassConstantPool pool) { |
| super.resolve(pool); |
| nameAndTypeIndex = pool.indexOf(nameAndType); |
| classNameIndex = pool.indexOf(className); |
| } |
| |
| @Override |
| public String toString() { |
| if (cachedToString == null) { |
| String type; |
| if (getTag() == CP_Fieldref) { |
| type = "FieldRef"; //$NON-NLS-1$ |
| } else if (getTag() == CP_Methodref) { |
| type = "MethoddRef"; //$NON-NLS-1$ |
| } else if (getTag() == CP_InterfaceMethodref) { |
| type = "InterfaceMethodRef"; //$NON-NLS-1$ |
| } else { |
| type = "unknown"; //$NON-NLS-1$ |
| } |
| cachedToString = type + ": " + className + "#" + nameAndType; //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| return cachedToString; |
| } |
| |
| @Override |
| protected void writeBody(final DataOutputStream dos) throws IOException { |
| dos.writeShort(classNameIndex); |
| dos.writeShort(nameAndTypeIndex); |
| } |
| |
| } |