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/*
 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
 */
/*
 * 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,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.sun.org.apache.bcel.internal.generic;
/**
 * FCONST - Push 0.0, 1.0 or 2.0, other values cause an exception
 *
 * <PRE>Stack: ... -&gt; ..., </PRE>
 *
 * @version $Id: FCONST.java 1747278 2016-06-07 17:28:43Z britter $
 * @LastModified: Nov 2017
 */
public class FCONST extends Instruction implements ConstantPushInstruction {
    private float value;
    /**
     * Empty constructor needed for the Class.newInstance() statement in
     * Instruction.readInstruction(). Not to be used otherwise.
     */
    FCONST() {
    }
    public FCONST(final float f) {
        super(com.sun.org.apache.bcel.internal.Const.FCONST_0, (short) 1);
        if (f == 0.0) {
            super.setOpcode(com.sun.org.apache.bcel.internal.Const.FCONST_0);
        } else if (f == 1.0) {
            super.setOpcode(com.sun.org.apache.bcel.internal.Const.FCONST_1);
        } else if (f == 2.0) {
            super.setOpcode(com.sun.org.apache.bcel.internal.Const.FCONST_2);
        } else {
            throw new ClassGenException("FCONST can be used only for 0.0, 1.0 and 2.0: " + f);
        }
        value = f;
    }
    @Override
    public Number getValue() {
        return value;
    }
    /** @return Type.FLOAT
     */
    @Override
    public Type getType( final ConstantPoolGen cp ) {
        return Type.FLOAT;
    }
    /**
     * 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.visitPushInstruction(this);
        v.visitStackProducer(this);
        v.visitTypedInstruction(this);
        v.visitConstantPushInstruction(this);
        v.visitFCONST(this);
    }
}
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