KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > puppycrawl > tools > checkstyle > checks > coding > IllegalCatchCheck


1 ////////////////////////////////////////////////////////////////////////////////
2 // checkstyle: Checks Java source code for adherence to a set of rules.
3 // Copyright (C) 2001-2005 Oliver Burn
4 //
5 // This library is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU Lesser General Public
7 // License as published by the Free Software Foundation; either
8 // version 2.1 of the License, or (at your option) any later version.
9 //
10 // This library is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // Lesser General Public License for more details.
14 //
15 // You should have received a copy of the GNU Lesser General Public
16 // License along with this library; if not, write to the Free Software
17 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 ////////////////////////////////////////////////////////////////////////////////
19 package com.puppycrawl.tools.checkstyle.checks.coding;
20
21 import com.puppycrawl.tools.checkstyle.api.DetailAST;
22 import com.puppycrawl.tools.checkstyle.api.FullIdent;
23 import com.puppycrawl.tools.checkstyle.api.TokenTypes;
24 import com.puppycrawl.tools.checkstyle.checks.CheckUtils;
25
26 /**
27  * Catching java.lang.Exception, java.lang.Error or java.lang.RuntimeException
28  * is almost never acceptable.
29  * @author <a HREF="mailto:simon@redhillconsulting.com.au">Simon Harris</a>
30  */
31 public final class IllegalCatchCheck extends AbstractIllegalCheck
32 {
33     /** Creates new instance of the check. */
34     public IllegalCatchCheck()
35     {
36         super(new String JavaDoc[] {"Exception", "Error",
37                             "RuntimeException", "Throwable",
38                             "java.lang.Error",
39                             "java.lang.Exception",
40                             "java.lang.RuntimeException",
41                             "java.lang.Throwable",
42         });
43     }
44
45     /** {@inheritDoc} */
46     public int[] getDefaultTokens()
47     {
48         return new int[] {TokenTypes.LITERAL_CATCH};
49     }
50
51     /** {@inheritDoc} */
52     public int[] getRequiredTokens()
53     {
54         return getDefaultTokens();
55     }
56
57     /** {@inheritDoc} */
58     public void visitToken(DetailAST aDetailAST)
59     {
60         final DetailAST paramDef =
61             aDetailAST.findFirstToken(TokenTypes.PARAMETER_DEF);
62         final DetailAST excType = paramDef.findFirstToken(TokenTypes.TYPE);
63         final FullIdent ident = CheckUtils.createFullType(excType);
64
65         if (isIllegalClassName(ident.getText())) {
66             log(aDetailAST, "illegal.catch", ident.getText());
67         }
68     }
69 }
70
Popular Tags