    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 */
    017package org.apache.bcel.generic;
    018
    019import org.apache.bcel.Const;
    020
    021/**
    022 * Denotes basic type such as int.
    023 */
    024public final class BasicType extends Type {
    025
    026    // @since 6.0 no longer final
    027    public static BasicType getType(final byte type) {
    028        switch (type) {
    029        case Const.T_VOID:
    030            return VOID;
    031        case Const.T_BOOLEAN:
    032            return BOOLEAN;
    033        case Const.T_BYTE:
    034            return BYTE;
    035        case Const.T_SHORT:
    036            return SHORT;
    037        case Const.T_CHAR:
    038            return CHAR;
    039        case Const.T_INT:
    040            return INT;
    041        case Const.T_LONG:
    042            return LONG;
    043        case Const.T_DOUBLE:
    044            return DOUBLE;
    045        case Const.T_FLOAT:
    046            return FLOAT;
    047        default:
    048            throw new ClassGenException("Invalid type: " + type);
    049        }
    050    }
    051
    052    /**
    053     * Constructor for basic types such as int, long, `void'
    054     *
    055     * @param type one of T_INT, T_BOOLEAN, ..., T_VOID
    056     * @see Const
    057     */
    058    BasicType(final byte type) {
    059        super(type, Const.getShortTypeName(type));
    060        if (type < Const.T_BOOLEAN || type > Const.T_VOID) {
    061            throw new ClassGenException("Invalid type: " + type);
    062        }
    063    }
    064
    065    /**
    066     * @return true if both type objects refer to the same type
    067     */
    068    @Override
    069    public boolean equals(final Object type) {
    070        return type instanceof BasicType && ((BasicType) type).getType() == this.getType();
    071    }
    072
    073    /**
    074     * @return a hash code value for the object.
    075     */
    076    @Override
    077    public int hashCode() {
    078        return super.getType();
    079    }
    080}