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Java > Open Source Codes > com > puppycrawl > tools > checkstyle > checks > usage > transmogrify > PrimitiveClasses


1
2 // Transmogrify License
3 //
4 // Copyright (c) 2001, ThoughtWorks, Inc.
5 // All rights reserved.
6 // Redistribution and use in source and binary forms, with or without
7 // modification, are permitted provided that the following conditions
8 // are met:
9 // - Redistributions of source code must retain the above copyright notice,
10 // this list of conditions and the following disclaimer.
11 // - Redistributions in binary form must reproduce the above copyright
12 // notice, this list of conditions and the following disclaimer in the
13 // documentation and/or other materials provided with the distribution.
14 // Neither the name of the ThoughtWorks, Inc. nor the names of its
15 // contributors may be used to endorse or promote products derived from this
16 // software without specific prior written permission.
17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 // TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
21 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24 // OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
27 // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29 package com.puppycrawl.tools.checkstyle.checks.usage.transmogrify;
30
31 import java.util.ArrayList JavaDoc;
32 import java.util.List JavaDoc;
33
34 public class PrimitiveClasses {
35
36   public static final ExternalClass BOOLEAN = new ExternalClass(Boolean.TYPE);
37   public static final ExternalClass CHAR = new ExternalClass(Character.TYPE);
38   public static final ExternalClass BYTE = new ExternalClass(Byte.TYPE);
39   public static final ExternalClass SHORT = new ExternalClass(Short.TYPE);
40   public static final ExternalClass INT = new ExternalClass(Integer.TYPE);
41   public static final ExternalClass LONG = new ExternalClass(Long.TYPE);
42   public static final ExternalClass FLOAT = new ExternalClass(Float.TYPE);
43   public static final ExternalClass DOUBLE = new ExternalClass(Double.TYPE);
44
45   private static List JavaDoc order;
46
47   static {
48     order = new ArrayList JavaDoc();
49     order.add(DOUBLE);
50     order.add(FLOAT);
51     order.add(LONG);
52     order.add(INT);
53     order.add(SHORT);
54     order.add(BYTE);
55   }
56
57   public static boolean typesAreCompatible(ExternalClass hole,
58                                            ExternalClass peg) {
59     boolean result = false;
60
61     if (hole.equals(BOOLEAN)) {
62       result = peg.equals(BOOLEAN);
63     }
64     else if (hole.equals(CHAR)) {
65       result = peg.equals(CHAR);
66     }
67     else if (peg.equals(CHAR)) {
68       result = (hole.equals(CHAR) ||
69                 order.indexOf(hole) <= order.indexOf(INT));
70     }
71     else {
72       result = (order.indexOf(hole) <= order.indexOf(peg));
73     }
74
75     return result;
76   }
77
78   public static IClass unaryPromote(IClass type) {
79     IClass result = type;
80
81     if (type.equals(BYTE) || type.equals(SHORT) || type.equals(CHAR)) {
82       result = INT;
83     }
84
85     return result;
86   }
87
88   public static IClass binaryPromote(IClass a, IClass b) {
89     IClass result = null;
90
91     if (a.equals(DOUBLE) || b.equals(DOUBLE)) {
92       result = DOUBLE;
93     }
94     else if (a.equals(FLOAT) || b.equals(FLOAT)) {
95       result = FLOAT;
96     }
97     else if (a.equals(LONG) || b.equals(LONG)) {
98       result = LONG;
99     }
100     else {
101       result = INT;
102     }
103
104     return result;
105   }
106
107 }
108
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