001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 *  Unless required by applicable law or agreed to in writing, software
012 *  distributed under the License is distributed on an "AS IS" BASIS,
013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 *  See the License for the specific language governing permissions and
015 *  limitations under the License.
016 *
017 */
018package org.apache.bcel.generic;
019
020import org.apache.bcel.Const;
021
022/**
023 * Denotes basic type such as int.
024 *
025 * @version $Id: BasicType.java 1806200 2017-08-25 16:33:06Z ggregory $
026 */
027public final class BasicType extends Type {
028
029    /**
030     * Constructor for basic types such as int, long, `void'
031     *
032     * @param type one of T_INT, T_BOOLEAN, ..., T_VOID
033     * @see Const
034     */
035    BasicType(final byte type) {
036        super(type, Const.getShortTypeName(type));
037        if ((type < Const.T_BOOLEAN) || (type > Const.T_VOID)) {
038            throw new ClassGenException("Invalid type: " + type);
039        }
040    }
041
042
043    // @since 6.0 no longer final
044    public static BasicType getType( final byte type ) {
045        switch (type) {
046            case Const.T_VOID:
047                return VOID;
048            case Const.T_BOOLEAN:
049                return BOOLEAN;
050            case Const.T_BYTE:
051                return BYTE;
052            case Const.T_SHORT:
053                return SHORT;
054            case Const.T_CHAR:
055                return CHAR;
056            case Const.T_INT:
057                return INT;
058            case Const.T_LONG:
059                return LONG;
060            case Const.T_DOUBLE:
061                return DOUBLE;
062            case Const.T_FLOAT:
063                return FLOAT;
064            default:
065                throw new ClassGenException("Invalid type: " + type);
066        }
067    }
068
069
070    /** @return a hash code value for the object.
071     */
072    @Override
073    public int hashCode() {
074        return super.getType();
075    }
076
077
078    /** @return true if both type objects refer to the same type
079     */
080    @Override
081    public boolean equals( final Object _type ) {
082        return (_type instanceof BasicType) ? ((BasicType) _type).getType() == this.getType() : false;
083    }
084}