    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 */
    026public final class BasicType extends Type {
    027
    028    /**
    029     * Constructor for basic types such as int, long, `void'
    030     *
    031     * @param type one of T_INT, T_BOOLEAN, ..., T_VOID
    032     * @see Const
    033     */
    034    BasicType(final byte type) {
    035        super(type, Const.getShortTypeName(type));
    036        if ((type < Const.T_BOOLEAN) || (type > Const.T_VOID)) {
    037            throw new ClassGenException("Invalid type: " + type);
    038        }
    039    }
    040
    041
    042    // @since 6.0 no longer final
    043    public static BasicType getType( final byte type ) {
    044        switch (type) {
    045            case Const.T_VOID:
    046                return VOID;
    047            case Const.T_BOOLEAN:
    048                return BOOLEAN;
    049            case Const.T_BYTE:
    050                return BYTE;
    051            case Const.T_SHORT:
    052                return SHORT;
    053            case Const.T_CHAR:
    054                return CHAR;
    055            case Const.T_INT:
    056                return INT;
    057            case Const.T_LONG:
    058                return LONG;
    059            case Const.T_DOUBLE:
    060                return DOUBLE;
    061            case Const.T_FLOAT:
    062                return FLOAT;
    063            default:
    064                throw new ClassGenException("Invalid type: " + type);
    065        }
    066    }
    067
    068
    069    /** @return a hash code value for the object.
    070     */
    071    @Override
    072    public int hashCode() {
    073        return super.getType();
    074    }
    075
    076
    077    /** @return true if both type objects refer to the same type
    078     */
    079    @Override
    080    public boolean equals( final Object _type ) {
    081        return (_type instanceof BasicType) ? ((BasicType) _type).getType() == this.getType() : false;
    082    }
    083}