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/*
* Copyright 2000-2002,2004 Apache Software Foundation
*
* 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.apache.tools.ant.taskdefs.optional.depend.constantpool;
import java.io.DataInputStream;
import java.io.IOException;
/**
* The constant pool entry which stores class information.
*
* @author Conor MacNeill
*/
public class ClassCPInfo extends ConstantPoolEntry {
/**
* The class' name. This will be only valid if the entry has been
* resolved against the constant pool.
*/
private String className;
/**
* The index into the constant pool where this class' name is stored. If
* the class name is changed, this entry is invalid until this entry is
* connected to a constant pool.
*/
private int index;
/**
* Constructor. Sets the tag value for this entry to type Class
*/
public ClassCPInfo() {
super(CONSTANT_CLASS, 1);
}
/**
* Read the entry from a stream.
*
* @param cpStream the stream containing the constant pool entry to be
* read.
* @exception IOException thrown if there is a problem reading the entry
* from the stream.
*/
public void read(DataInputStream cpStream) throws IOException {
index = cpStream.readUnsignedShort();
className = "unresolved";
}
/**
* Generate a string readable version of this entry
*
* @return string representation of this constant pool entry
*/
public String toString() {
return "Class Constant Pool Entry for " + className + "[" + index + "]";
}
/**
* Resolve this class info against the given constant pool.
*
* @param constantPool the constant pool with which to resolve the
* class.
*/
public void resolve(ConstantPool constantPool) {
className = ((Utf8CPInfo) constantPool.getEntry(index)).getValue();
super.resolve(constantPool);
}
/**
* Get the class name of this entry.
*
* @return the class' name.
*/
public String getClassName() {
return className;
}
}
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