/*

 * reserved comment block

 * DO NOT REMOVE OR ALTER!

 */

/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

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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.Instruction;

import com.sun.org.apache.xalan.internal.xsltc.compiler.Stylesheet;

/**

 * This class implements auxiliary classes needed to compile

 * patterns in <tt>xsl:number</tt>. These classes inherit from

 * {Any,Single,Multiple}NodeCounter and override the

 * <tt>matchFrom</tt> and <tt>matchCount</tt> methods.

 * @author Jacek Ambroziak

 * @author Santiago Pericas-Geertsen

 */

public final class NodeCounterGenerator extends ClassGenerator {

    private Instruction _aloadTranslet;

    public NodeCounterGenerator(String className,

                                String superClassName,

                                String fileName,

                                int accessFlags,

                                String[] interfaces,

                                Stylesheet stylesheet) {

        super(className, superClassName, fileName,

              accessFlags, interfaces, stylesheet);

    }

    /**

     * Set the index of the register where "this" (the pointer to

     * the translet) is stored.

     */

    public void setTransletIndex(int index) {

        _aloadTranslet = new ALOAD(index);

    }

    /**

     * The index of the translet pointer within the execution of

     * matchFrom or matchCount.

     * Overridden from ClassGenerator.

     */

    public Instruction loadTranslet() {

        return _aloadTranslet;

    }

    /**

     * Returns <tt>true</tt> since this class is external to the

     * translet.

     */

    public boolean isExternal() {

        return true;

    }

}