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Java > Open Source Codes > edu > umd > cs > findbugs > detect > NoteSuppressedWarnings


1 /*
2  * FindBugs - Find bugs in Java programs
3  * Copyright (C) 2003-2005 University of Maryland
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
20 package edu.umd.cs.findbugs.detect;
21
22 import edu.umd.cs.findbugs.*;
23 import edu.umd.cs.findbugs.ba.ClassContext;
24 import edu.umd.cs.findbugs.visitclass.AnnotationVisitor;
25 import java.util.*;
26 import org.apache.bcel.Repository;
27 import org.apache.bcel.classfile.JavaClass;
28
29 public class NoteSuppressedWarnings
30         extends AnnotationVisitor
31         implements Detector, NonReportingDetector {
32
33     private Set<String JavaDoc> packages = new HashSet<String JavaDoc>();
34
35     private SuppressionMatcher suppressionMatcher;
36
37     private NoteSuppressedWarnings recursiveDetector;
38
39     public NoteSuppressedWarnings(BugReporter bugReporter) {
40         this(bugReporter, false);
41     }
42
43     public NoteSuppressedWarnings(BugReporter bugReporter, boolean recursive) {
44         if (!recursive) {
45             DelegatingBugReporter b = (DelegatingBugReporter) bugReporter;
46             BugReporter origBugReporter = b.getDelegate();
47             suppressionMatcher = new SuppressionMatcher();
48             BugReporter filterBugReporter = new FilterBugReporter(origBugReporter,
49                     suppressionMatcher, false);
50             b.setDelegate(filterBugReporter);
51             recursiveDetector = new NoteSuppressedWarnings(bugReporter, true);
52             recursiveDetector.suppressionMatcher = suppressionMatcher;
53         }
54     }
55
56     public void visitClassContext(ClassContext classContext) {
57         JavaClass javaClass = classContext.getJavaClass();
58         if (!FindUnreleasedLock.preTiger(javaClass)) javaClass.accept(this);
59     }
60
61     @Override JavaDoc
62     public void visit(JavaClass obj) {
63         if (recursiveDetector == null)
64             return;
65         try {
66             if (getClassName().endsWith("package-info"))
67                 return;
68             String JavaDoc packageName = getPackageName().replace('/', '.');
69             if (!packages.add(packageName))
70                 return;
71             String JavaDoc packageInfo = "package-info";
72             if (packageName.length() > 0)
73                 packageInfo = packageName + "." + packageInfo;
74
75             JavaClass packageInfoClass = Repository.lookupClass(packageInfo);
76             recursiveDetector.visitJavaClass(packageInfoClass);
77         } catch (ClassNotFoundException JavaDoc e) {
78             // ignore
79 }
80     }
81
82     @Override JavaDoc
83     public void visitAnnotation(String JavaDoc annotationClass, Map<String JavaDoc, Object JavaDoc> map,
84             boolean runtimeVisible) {
85         if (!annotationClass.endsWith("SuppressWarnings"))
86             return;
87         Object JavaDoc value = map.get("value");
88         if (value == null || !(value instanceof Object JavaDoc[])) {
89             suppressWarning(null);
90             return;
91         }
92         Object JavaDoc[] suppressedWarnings = (Object JavaDoc[]) value;
93         if (suppressedWarnings.length == 0)
94             suppressWarning(null);
95         else
96             for (Object JavaDoc suppressedWarning : suppressedWarnings)
97                 suppressWarning((String JavaDoc) suppressedWarning);
98     }
99
100     private void suppressWarning(String JavaDoc pattern) {
101         String JavaDoc className = getDottedClassName();
102         ClassAnnotation clazz = new ClassAnnotation(className);
103         if (className.endsWith("package-info") && recursiveDetector == null)
104             suppressionMatcher.addPackageSuppressor(new PackageWarningSuppressor(pattern,
105                     getPackageName().replace('/', '.')));
106         else if (visitingMethod())
107             suppressionMatcher.addSuppressor(new MethodWarningSuppressor(pattern, clazz,
108                     MethodAnnotation.fromVisitedMethod(this)));
109         else if (visitingField())
110             suppressionMatcher.addSuppressor(new FieldWarningSuppressor(pattern, clazz,
111                     FieldAnnotation.fromVisitedField(this)));
112         else
113             suppressionMatcher.addSuppressor(new ClassWarningSuppressor(pattern, clazz));
114     }
115
116     public void report() {
117
118     }
119
120 }
121
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