/*

 * 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.classfile;

import java.io.DataInput;

import java.io.DataOutputStream;

import java.io.IOException;

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

/**

 * This class is derived from the abstract {@link Constant}

 * and represents a reference to an int object.

 *

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

 * @see     Constant

 */

public final class ConstantInteger extends Constant implements ConstantObject {

    private int bytes;

    /**

     * @param bytes Data

     */

    public ConstantInteger(final int bytes) {

        super(Const.CONSTANT_Integer);

        this.bytes = bytes;

    }

    /**

     * Initialize from another object.

     */

    public ConstantInteger(final ConstantInteger c) {

        this(c.getBytes());

    }

    /**

     * Initialize instance from file data.

     *

     * @param file Input stream

     * @throws IOException

     */

    ConstantInteger(final DataInput file) throws IOException {

        this(file.readInt());

    }

    /**

     * Called by objects that are traversing the nodes of the tree implicitely

     * defined by the contents of a Java class. I.e., the hierarchy of methods,

     * fields, attributes, etc. spawns a tree of objects.

     *

     * @param v Visitor object

     */

    @Override

    public void accept( final Visitor v ) {

        v.visitConstantInteger(this);

    }

    /**

     * Dump constant integer to file stream in binary format.

     *

     * @param file Output file stream

     * @throws IOException

     */

    @Override

    public final void dump( final DataOutputStream file ) throws IOException {

        file.writeByte(super.getTag());

        file.writeInt(bytes);

    }

    /**

     * @return data, i.e., 4 bytes.

     */

    public final int getBytes() {

        return bytes;

    }

    /**

     * @param bytes the raw bytes that represent this integer

     */

    public final void setBytes( final int bytes ) {

        this.bytes = bytes;

    }

    /**

     * @return String representation.

     */

    @Override

    public final String toString() {

        return super.toString() + "(bytes = " + bytes + ")";

    }

    /** @return Integer object

     */

    @Override

    public Object getConstantValue( final ConstantPool cp ) {

        return Integer.valueOf(bytes);

    }

}