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/*

 * 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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 * See the License for the specific language governing permissions and

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package com.sun.org.apache.bcel.internal.generic;

/**

 * Denotes an unparameterized instruction to load a value from a local

 * variable, e.g. ILOAD.

 *

 * @version $Id: LoadInstruction.java 1747278 2016-06-07 17:28:43Z britter $

 */

public abstract class LoadInstruction extends LocalVariableInstruction implements PushInstruction {

    /**

     * Empty constructor needed for the Class.newInstance() statement in

     * Instruction.readInstruction(). Not to be used otherwise.

     * tag and length are defined in readInstruction and initFromFile, respectively.

     */

    LoadInstruction(final short canon_tag, final short c_tag) {

        super(canon_tag, c_tag);

    }

    /**

     * @param opcode Instruction opcode

     * @param c_tag Instruction number for compact version, ALOAD_0, e.g.

     * @param n local variable index (unsigned short)

     */

    protected LoadInstruction(final short opcode, final short c_tag, final int n) {

        super(opcode, c_tag, n);

    }

    /**

     * Call corresponding visitor method(s). The order is:

     * Call visitor methods of implemented interfaces first, then

     * call methods according to the class hierarchy in descending order,

     * i.e., the most specific visitXXX() call comes last.

     *

     * @param v Visitor object

     */

    @Override

    public void accept( final Visitor v ) {

        v.visitStackProducer(this);

        v.visitPushInstruction(this);

        v.visitTypedInstruction(this);

        v.visitLocalVariableInstruction(this);

        v.visitLoadInstruction(this);

    }

}