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/*
 * $Id: AttributeSetMethodGenerator.java,v 1.11 2010-11-01 04:34:19 joehw Exp $
 */
package com.sun.org.apache.xalan.internal.xsltc.compiler.util;

import com.sun.org.apache.bcel.internal.generic.ALOAD;
import com.sun.org.apache.bcel.internal.generic.ASTORE;
import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
import com.sun.org.apache.bcel.internal.generic.Instruction;
import com.sun.org.apache.bcel.internal.generic.InstructionList;
import com.sun.org.apache.bcel.internal.generic.Type;

/**
 * @author Santiago Pericas-Geertsen
 */
public final class AttributeSetMethodGenerator extends MethodGenerator {
    
    protected static final int CURRENT_INDEX  = 4;
    private static final int PARAM_START_INDEX = 5;

    private static final String[] argNames = new String[4];
    private static final com.sun.org.apache.bcel.internal.generic.Type[] argTypes = 
        new com.sun.org.apache.bcel.internal.generic.Type[4];
    
    static {
	argTypes[0] = Util.getJCRefType(DOM_INTF_SIG);
	argTypes[1] = Util.getJCRefType(NODE_ITERATOR_SIG);
	argTypes[2] = Util.getJCRefType(TRANSLET_OUTPUT_SIG);
	argTypes[3] = com.sun.org.apache.bcel.internal.generic.Type.INT;
	argNames[0] = DOCUMENT_PNAME;
	argNames[1] = ITERATOR_PNAME;
	argNames[2] = TRANSLET_OUTPUT_PNAME;
	argNames[3] = NODE_PNAME;
    }
	
   public AttributeSetMethodGenerator(String methodName, ClassGenerator classGen) {
	super(com.sun.org.apache.bcel.internal.Constants.ACC_PRIVATE,
	      com.sun.org.apache.bcel.internal.generic.Type.VOID,
	      argTypes, argNames, methodName, 
	      classGen.getClassName(),
	      new InstructionList(),
	      classGen.getConstantPool());
   }
   
    public int getLocalIndex(String name) {
	if (name.equals("current")) {
	    return CURRENT_INDEX;
	}
	return super.getLocalIndex(name);
    }

    public Instruction loadParameter(int index) {
        return new ALOAD(index + PARAM_START_INDEX);
    }
    
    public Instruction storeParameter(int index) {
        return new ASTORE(index + PARAM_START_INDEX);
    }
}