View Javadoc
1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   *
17   */
18  package org.apache.bcel.generic;
19  
20  import org.apache.bcel.Const;
21  
22  /**
23   * Denotes basic type such as int.
24   *
25   * @version $Id: BasicType.html 1018313 2017-09-18 09:03:04Z britter $
26   */
27  public final class BasicType extends Type {
28  
29      /**
30       * Constructor for basic types such as int, long, `void'
31       *
32       * @param type one of T_INT, T_BOOLEAN, ..., T_VOID
33       * @see Const
34       */
35      BasicType(final byte type) {
36          super(type, Const.getShortTypeName(type));
37          if ((type < Const.T_BOOLEAN) || (type > Const.T_VOID)) {
38              throw new ClassGenException("Invalid type: " + type);
39          }
40      }
41  
42  
43      // @since 6.0 no longer final
44      public static BasicType getType( final byte type ) {
45          switch (type) {
46              case Const.T_VOID:
47                  return VOID;
48              case Const.T_BOOLEAN:
49                  return BOOLEAN;
50              case Const.T_BYTE:
51                  return BYTE;
52              case Const.T_SHORT:
53                  return SHORT;
54              case Const.T_CHAR:
55                  return CHAR;
56              case Const.T_INT:
57                  return INT;
58              case Const.T_LONG:
59                  return LONG;
60              case Const.T_DOUBLE:
61                  return DOUBLE;
62              case Const.T_FLOAT:
63                  return FLOAT;
64              default:
65                  throw new ClassGenException("Invalid type: " + type);
66          }
67      }
68  
69  
70      /** @return a hash code value for the object.
71       */
72      @Override
73      public int hashCode() {
74          return super.getType();
75      }
76  
77  
78      /** @return true if both type objects refer to the same type
79       */
80      @Override
81      public boolean equals( final Object _type ) {
82          return (_type instanceof BasicType) ? ((BasicType) _type).getType() == this.getType() : false;
83      }
84  }