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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based @AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step. This library is a superset of AspectJ weaver and hence also of AspectJ runtime.

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/* *******************************************************************
 * Copyright (c) 2004 IBM
 * All rights reserved.
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Public License v 2.0
 * which accompanies this distribution and is available at
 * https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
 *
 * Contributors:
 *     Andy Clement -     initial implementation {date}
 * ******************************************************************/

package org.aspectj.apache.bcel.classfile.annotation;

import java.io.DataOutputStream;
import java.io.IOException;

import org.aspectj.apache.bcel.classfile.ConstantPool;
import org.aspectj.apache.bcel.classfile.ConstantUtf8;
import org.aspectj.apache.bcel.generic.ObjectType;

public class ClassElementValue extends ElementValue {

	// For primitive types and string type, this points to the value entry in the cpool
	// For 'class' this points to the class entry in the cpool
	private int idx;

	protected ClassElementValue(int typeIdx, ConstantPool cpool) {
		super(ElementValue.CLASS, cpool);
		this.idx = typeIdx;
	}

	public ClassElementValue(ObjectType t, ConstantPool cpool) {
		super(ElementValue.CLASS, cpool);
		// this.idx = cpool.addClass(t);
		idx = cpool.addUtf8(t.getSignature());
	}

	/**
	 * Return immutable variant of this ClassElementValueGen
	 */
	// public ElementValueGen getElementValue() {
	// return new ClassElementValueGen(type,idx,cpGen);
	// }
	public ClassElementValue(ClassElementValue value, ConstantPool cpool, boolean copyPoolEntries) {
		super(CLASS, cpool);
		if (copyPoolEntries) {
			// idx = cpool.addClass(value.getClassString());
			idx = cpool.addUtf8(value.getClassString());
		} else {
			idx = value.getIndex();

		}
	}

	public int getIndex() {
		return idx;
	}

	public String getClassString() {
		ConstantUtf8 cu8 = (ConstantUtf8) getConstantPool().getConstant(idx);
		return cu8.getValue();
		// ConstantClass c = (ConstantClass)getConstantPool().getConstant(idx);
		// ConstantUtf8 utf8 = (ConstantUtf8)getConstantPool().getConstant(c.getNameIndex());
		// return utf8.getBytes();
	}

	@Override
	public String stringifyValue() {
		return getClassString();
	}

	@Override
	public void dump(DataOutputStream dos) throws IOException {
		dos.writeByte(type); // u1 kind of value
		dos.writeShort(idx);
	}

}