1 files changed, 102 insertions, 0 deletions
diff --git a/src/proguard/classfile/attribute/annotation/visitor/AnnotationTypeFilter.java b/src/proguard/classfile/attribute/annotation/visitor/AnnotationTypeFilter.java
new file mode 100644
index 0000000..d869fd2
--- /dev/null
+++ b/src/proguard/classfile/attribute/annotation/visitor/AnnotationTypeFilter.java
@@ -0,0 +1,102 @@
+/*
+ * ProGuard -- shrinking, optimization, obfuscation, and preverification
+ *             of Java bytecode.
+ *
+ * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+package proguard.classfile.attribute.annotation.visitor;
+
+import proguard.classfile.*;
+import proguard.classfile.attribute.annotation.Annotation;
+import proguard.classfile.util.SimplifiedVisitor;
+import proguard.util.*;
+
+/**
+ * This <code>AnnotationVisitor</code> delegates its visits to another given
+ * <code>AnnotationVisitor</code>, but only when the visited annotation has
+ * a type that matches a given regular expression.
+ *
+ * @author Eric Lafortune
+ */
+public class AnnotationTypeFilter
+extends      SimplifiedVisitor
+implements   AnnotationVisitor
+{
+    private final StringMatcher     regularExpressionMatcher;
+    private final AnnotationVisitor annotationVisitor;
+
+
+    /**
+     * Creates a new ClassNameFilter.
+     * @param regularExpression the regular expression against which annotation
+     *                          type names will be matched.
+     * @param annotationVisitor the <code>annotationVisitor</code> to which
+     *                          visits will be delegated.
+     */
+    public AnnotationTypeFilter(String            regularExpression,
+                                AnnotationVisitor annotationVisitor)
+    {
+        this.regularExpressionMatcher = new ListParser(new ClassNameParser()).parse(regularExpression);
+        this.annotationVisitor        = annotationVisitor;
+    }
+
+
+    // Implementations for AnnotationVisitor.
+
+    public void visitAnnotation(Clazz clazz, Annotation annotation)
+    {
+        if (accepted(annotation.getType(clazz)))
+        {
+            annotationVisitor.visitAnnotation(clazz, annotation);
+        }
+    }
+
+
+    public void visitAnnotation(Clazz clazz, Field field, Annotation annotation)
+    {
+        if (accepted(annotation.getType(clazz)))
+        {
+            annotationVisitor.visitAnnotation(clazz, field, annotation);
+        }
+    }
+
+
+    public void visitAnnotation(Clazz clazz, Method method, Annotation annotation)
+    {
+        if (accepted(annotation.getType(clazz)))
+        {
+            annotationVisitor.visitAnnotation(clazz, method, annotation);
+        }
+    }
+
+
+    public void visitAnnotation(Clazz clazz, Method method, int parameterIndex, Annotation annotation)
+    {
+        if (accepted(annotation.getType(clazz)))
+        {
+            annotationVisitor.visitAnnotation(clazz, method, parameterIndex, annotation);
+        }
+    }
+
+
+    // Small utility methods.
+
+    private boolean accepted(String name)
+    {
+        return regularExpressionMatcher.matches(name);
+    }
+}