/*

 * 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;

import java.io.DataOutputStream;

import java.io.IOException;

import com.sun.org.apache.bcel.internal.util.ByteSequence;

/**

 * BIPUSH - Push byte on stack

 *

 * <PRE>Stack: ... -&gt; ..., value</PRE>

 *

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

 */

public class BIPUSH extends Instruction implements ConstantPushInstruction {

    private byte b;

    /**

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

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

     */

    BIPUSH() {

    }

    /**

     * Push byte on stack

     */

    public BIPUSH(final byte b) {

        super(com.sun.org.apache.bcel.internal.Const.BIPUSH, (short) 2);

        this.b = b;

    }

    /**

     * Dump instruction as byte code to stream out.

     */

    @Override

    public void dump(final DataOutputStream out) throws IOException {

        super.dump(out);

        out.writeByte(b);

    }

    /**

     * @return mnemonic for instruction

     */

    @Override

    public String toString(final boolean verbose) {

        return super.toString(verbose) + " " + b;

    }

    /**

     * Read needed data (e.g. index) from file.

     */

    @Override

    protected void initFromFile(final ByteSequence bytes, final boolean wide) throws IOException {

        super.setLength(2);

        b = bytes.readByte();

    }

    @Override

    public Number getValue() {

        return Integer.valueOf(b);

    }

    /**

     * @return Type.BYTE

     */

    @Override

    public Type getType(final ConstantPoolGen cp) {

        return Type.BYTE;

    }

    /**

     * 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.visitBIPUSH(this);

    }

}