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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 java.util.List;

import org.aspectj.apache.bcel.Constants;
import org.aspectj.apache.bcel.classfile.ConstantPool;
import org.aspectj.apache.bcel.classfile.ConstantUtf8;

public class AnnotationElementValue extends ElementValue {

	private AnnotationGen a;

	public AnnotationElementValue(AnnotationGen a, ConstantPool cpool) {
		super(ANNOTATION, cpool);
		this.a = a;
	}

	public AnnotationElementValue(int type, AnnotationGen annotation, ConstantPool cpool) {
		super(type, cpool);
		assert type == ANNOTATION;
		this.a = annotation;
	}

	public AnnotationElementValue(AnnotationElementValue value, ConstantPool cpool, boolean copyPoolEntries) {
		super(ANNOTATION, cpool);
		a = new AnnotationGen(value.getAnnotation(), cpool, copyPoolEntries);
	}

	@Override
	public void dump(DataOutputStream dos) throws IOException {
		dos.writeByte(type); // u1 type of value (ANNOTATION == '@')
		a.dump(dos);
	}

	@Override
	public String stringifyValue() {
		StringBuilder sb = new StringBuilder();
		ConstantUtf8 cu8 = (ConstantUtf8) cpool.getConstant(a.getTypeIndex(), Constants.CONSTANT_Utf8);
		sb.append(cu8.getValue());
		// haven't really tested this values section:
		List pairs = a.getValues();
		if (pairs != null && pairs.size() > 0) {
			sb.append("(");
			for (int p = 0; p < pairs.size(); p++) {
				if (p > 0) {
					sb.append(",");
				}
				sb.append(pairs.get(p).getNameString()).append("=").append(pairs.get(p).getValue().stringifyValue());
			}
			sb.append(")");
		}
		return sb.toString();
	}

	public AnnotationGen getAnnotation() {
		return a;
	}

}