/*
 * 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.bcel.internal.generic;

import com.sun.org.apache.bcel.internal.Const;
import com.sun.org.apache.bcel.internal.ExceptionConst;

GETFIELD - Fetch field from object
Stack: ..., objectref -> ..., value
 OR
Stack: ..., objectref -> ..., value.word1, value.word2
Version:
$Id: GETFIELD.java 1747278 2016-06-07 17:28:43Z britter $/**
 * GETFIELD - Fetch field from object
 * <PRE>Stack: ..., objectref -&gt; ..., value</PRE> OR
 * <PRE>Stack: ..., objectref -&gt; ..., value.word1, value.word2</PRE>
 *
 * @version $Id: GETFIELD.java 1747278 2016-06-07 17:28:43Z britter $
 */
public class GETFIELD extends FieldInstruction implements ExceptionThrower, StackConsumer,
        StackProducer {

    
Empty constructor needed for the Class.newInstance() statement in
Instruction.readInstruction(). Not to be used otherwise.
/**
     * Empty constructor needed for the Class.newInstance() statement in
     * Instruction.readInstruction(). Not to be used otherwise.
     */
    GETFIELD() {
    }

    public GETFIELD(final int index) {
        super(Const.GETFIELD, index);
    }

    @Override
    public int produceStack(final ConstantPoolGen cpg) {
        return getFieldSize(cpg);
    }

    @Override
    public Class<?>[] getExceptions() {
        return ExceptionConst.createExceptions(ExceptionConst.EXCS.EXCS_FIELD_AND_METHOD_RESOLUTION,
                ExceptionConst.NULL_POINTER_EXCEPTION,
                ExceptionConst.INCOMPATIBLE_CLASS_CHANGE_ERROR);
    }

    
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.
Params:
v – Visitor object/**
     * 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.visitExceptionThrower(this);
        v.visitStackConsumer(this);
        v.visitStackProducer(this);
        v.visitTypedInstruction(this);
        v.visitLoadClass(this);
        v.visitCPInstruction(this);
        v.visitFieldOrMethod(this);
        v.visitFieldInstruction(this);
        v.visitGETFIELD(this);
    }
}