org.aspectj.apache.bcel.classfile.annotation.ElementNameValuePairGen Maven / Gradle / Ivy

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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 v1.0 
 * which accompanies this distribution and is available at 
 * http://www.eclipse.org/legal/epl-v10.html 
 *  
 * Contributors: 
 *     Andy Clement -     initial implementation 
 * ******************************************************************/

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

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

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


public class ElementNameValuePairGen {
	private int nameIdx;
	private ElementValueGen value;
	private ConstantPool cpool;

	public ElementNameValuePairGen(ElementNameValuePairGen nvp, ConstantPool cpool, boolean copyPoolEntries) {
		this.cpool = cpool;
		// J5ASSERT:
		// Could assert nvp.getNameString() points to the same thing as cpool.getConstant(nvp.getNameIndex())
//		if (!nvp.getNameString().equals(((ConstantUtf8)cpool.getConstant(nvp.getNameIndex())).getBytes())) {
//			throw new RuntimeException("envp buggered");
//		}
		if (copyPoolEntries) { 
			nameIdx = cpool.addUtf8(nvp.getNameString());
		} else {
			nameIdx = nvp.getNameIndex();
		}
		value = ElementValueGen.copy(nvp.getValue(),cpool,copyPoolEntries);
	}
	
	/**
	 * Retrieve an immutable version of this ElementNameValuePairGen
	 */
//	public ElementNameValuePairGen getElementNameValuePair() {
//		ElementValueGen immutableValue = value.getElementValue();
//		return new ElementNameValuePairGen(nameIdx,immutableValue,cpool);
//	}


	protected ElementNameValuePairGen(int idx,ElementValueGen value,ConstantPool cpool) {
		this.nameIdx = idx;
		this.value   = value;
		this.cpool   = cpool;
	}
	
	public ElementNameValuePairGen(String name,ElementValueGen value,ConstantPool cpool) {
		this.nameIdx = cpool.addUtf8(name);
		this.value   = value;
		this.cpool   = cpool;
	}
	
	protected void dump(DataOutputStream dos) throws IOException {
		dos.writeShort(nameIdx); // u2 name of the element
		value.dump(dos);
	}
	
	public int getNameIndex() {
		return nameIdx;
	}
	
	public final String getNameString() {
//	  ConstantString cu8 = (ConstantString)cpool.getConstant(nameIdx);
      return ((ConstantUtf8)cpool.getConstant(nameIdx)).getBytes();
	}
	
	public final ElementValueGen getValue() {
		return value;
	}
	
	public String toString() {
		StringBuffer sb = new StringBuffer();
		sb.append(getNameString()+"="+value.stringifyValue());
		return sb.toString();
	}
}