package org.aspectj.apache.bcel.generic;

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 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
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 *    "Apache BCEL" must not be used to endorse or promote products
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 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
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import org.aspectj.apache.bcel.classfile.Constant;
import org.aspectj.apache.bcel.classfile.ConstantCP;
import org.aspectj.apache.bcel.classfile.ConstantNameAndType;
import org.aspectj.apache.bcel.classfile.ConstantPool;
import org.aspectj.apache.bcel.classfile.ConstantUtf8;

Super class for InvokeInstruction and FieldInstruction, since they have some methods in common!
Author:
M. Dahm
Version:
$Id: FieldOrMethod.java,v 1.8 2009/10/05 17:35:36 aclement Exp $/**
 * Super class for InvokeInstruction and FieldInstruction, since they have some methods in common!
 * 
 * @version $Id: FieldOrMethod.java,v 1.8 2009/10/05 17:35:36 aclement Exp $
 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
 */
public abstract class FieldOrMethod extends InstructionCP {

	protected String signature;
	protected String name;
	private String classname;

	protected FieldOrMethod(short opcode, int index) {
		super(opcode, index);
	}

	
Returns:
signature of referenced method/field./**
	 * @return signature of referenced method/field.
	 */
	public String getSignature(ConstantPool cp) {
		if (signature == null) {
			Constant c = cp.getConstant(index);
			ConstantCP cmr = (ConstantCP) c;
			ConstantNameAndType cnat = (ConstantNameAndType) cp.getConstant(cmr.getNameAndTypeIndex());
			signature = ((ConstantUtf8) cp.getConstant(cnat.getSignatureIndex())).getValue();
		}
		return signature;
	}

	
Returns:
name of referenced method/field./**
	 * @return name of referenced method/field.
	 */
	public String getName(ConstantPool cp) {
		if (name == null) {
			ConstantCP cmr = (ConstantCP) cp.getConstant(index);
			ConstantNameAndType cnat = (ConstantNameAndType) cp.getConstant(cmr.getNameAndTypeIndex());
			name = ((ConstantUtf8) cp.getConstant(cnat.getNameIndex())).getValue();
		}
		return name;
	}

	
Returns:
name of the referenced class/interface/**
	 * @return name of the referenced class/interface
	 */
	public String getClassName(ConstantPool cp) {
		if (classname == null) {
			ConstantCP cmr = (ConstantCP) cp.getConstant(index);
			String str = cp.getConstantString(cmr.getClassIndex(), CONSTANT_Class);
			if (str.charAt(0) == '[') {
				classname = str;
			} else {
				classname = str.replace('/', '.');
			}
		}
		return classname;
	}

	
Returns:
type of the referenced class/interface/**
	 * @return type of the referenced class/interface
	 */
	public ObjectType getClassType(ConstantPool cpg) {
		return new ObjectType(getClassName(cpg));
	}

	
Returns:
type of the referenced class/interface/**
	 * @return type of the referenced class/interface
	 */
	@Override
	public ObjectType getLoadClassType(ConstantPool cpg) {
		return getClassType(cpg);
	}
}