| /* |
| * 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 |
| * |
| * https://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.tools.ant.taskdefs.optional.depend.constantpool; |
| |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| |
| /** |
| * A MethodHandle CP Info |
| * |
| */ |
| public class MethodHandleCPInfo extends ConstantPoolEntry { |
| private ConstantPoolEntry reference; |
| |
| /** reference kind **/ |
| private ReferenceKind referenceKind; |
| /** Must be a valid index into the constant pool table. */ |
| private int referenceIndex; |
| |
| public enum ReferenceKind { |
| REF_getField, |
| REF_getStatic, |
| REF_putField, |
| REF_putStatic, |
| REF_invokeVirtual, |
| REF_invokeStatic, |
| REF_invokeSpecial, |
| REF_newInvokeSpecial, |
| REF_invokeInterface; |
| |
| public int value() { |
| return ordinal() + 1; |
| } |
| } |
| |
| /** Constructor. */ |
| public MethodHandleCPInfo() { |
| super(CONSTANT_METHODHANDLE, 1); |
| } |
| |
| /** |
| * read a constant pool entry from a class stream. |
| * |
| * @param cpStream the DataInputStream which contains the constant pool |
| * entry to be read. |
| * @exception IOException if there is a problem reading the entry from |
| * the stream. |
| */ |
| @Override |
| public void read(DataInputStream cpStream) throws IOException { |
| referenceKind = ReferenceKind.values()[cpStream.readUnsignedByte() - 1]; |
| referenceIndex = cpStream.readUnsignedShort(); |
| } |
| |
| /** |
| * Print a readable version of the constant pool entry. |
| * |
| * @return the string representation of this constant pool entry. |
| */ |
| @Override |
| public String toString() { |
| if (isResolved()) { |
| return "MethodHandle : " + reference.toString(); |
| } |
| return "MethodHandle : Reference kind = " + referenceKind |
| + "Reference index = " + referenceIndex; |
| } |
| |
| /** |
| * Resolve this constant pool entry with respect to its dependents in |
| * the constant pool. |
| * |
| * @param constantPool the constant pool of which this entry is a member |
| * and against which this entry is to be resolved. |
| */ |
| @Override |
| public void resolve(ConstantPool constantPool) { |
| reference = constantPool.getEntry(referenceIndex); |
| reference.resolve(constantPool); |
| super.resolve(constantPool); |
| } |
| |
| } |