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


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
25 /**
26  * Throwing java.lang.Error or java.lang.RuntimeException
27  * is almost never acceptable.
28  * @author Oliver Burn
29  */
30 public final class IllegalThrowsCheck extends AbstractIllegalCheck
31 {
32     /** Creates new instance of the check. */
33     public IllegalThrowsCheck()
34     {
35         super(new String JavaDoc[] {"Error",
36                             "RuntimeException", "Throwable",
37                             "java.lang.Error",
38                             "java.lang.RuntimeException",
39                             "java.lang.Throwable",
40         });
41     }
42
43     /** {@inheritDoc} */
44     public int[] getDefaultTokens()
45     {
46         return new int[] {TokenTypes.LITERAL_THROWS};
47     }
48
49     /** {@inheritDoc} */
50     public int[] getRequiredTokens()
51     {
52         return getDefaultTokens();
53     }
54
55     /** {@inheritDoc} */
56     public void visitToken(DetailAST aDetailAST)
57     {
58         DetailAST token = (DetailAST) aDetailAST.getFirstChild();
59         while (token != null) {
60             if (token.getType() != TokenTypes.COMMA) {
61                 final FullIdent ident = FullIdent.createFullIdent(token);
62                 if (isIllegalClassName(ident.getText())) {
63                     log(token, "illegal.throw", ident.getText());
64                 }
65             }
66
67             token = (DetailAST) token.getNextSibling();
68         }
69     }
70 }
71
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