1 files changed, 140 insertions, 0 deletions
diff --git a/src/proguard/optimize/peephole/RetargetedInnerClassAttributeRemover.java b/src/proguard/optimize/peephole/RetargetedInnerClassAttributeRemover.java
new file mode 100644
index 0000000..6707a12
--- /dev/null
+++ b/src/proguard/optimize/peephole/RetargetedInnerClassAttributeRemover.java
@@ -0,0 +1,140 @@
+/*
+ * 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.optimize.peephole;
+
+import proguard.classfile.*;
+import proguard.classfile.attribute.*;
+import proguard.classfile.attribute.visitor.*;
+import proguard.classfile.constant.ClassConstant;
+import proguard.classfile.constant.visitor.ConstantVisitor;
+import proguard.classfile.util.SimplifiedVisitor;
+import proguard.classfile.visitor.ClassVisitor;
+
+/**
+ * This ClassVisitor removes InnerClasses and EnclosingMethod attributes in
+ * classes that are retargeted or that refer to classes that are retargeted.
+ *
+ * @see ClassMerger
+ * @author Eric Lafortune
+ */
+public class RetargetedInnerClassAttributeRemover
+extends      SimplifiedVisitor
+implements   ClassVisitor,
+             AttributeVisitor,
+             InnerClassesInfoVisitor,
+             ConstantVisitor
+{
+    private boolean retargeted;
+
+
+    // Implementations for ClassVisitor.
+
+    public void visitProgramClass(ProgramClass programClass)
+    {
+        int         attributesCount = programClass.u2attributesCount;
+        Attribute[] attributes      = programClass.attributes;
+
+        int newAtributesCount = 0;
+
+        // Copy over all non-retargeted attributes.
+        for (int index = 0; index < attributesCount; index++)
+        {
+            Attribute attribute = attributes[index];
+
+            // Check if it's an InnerClasses or EnclosingMethod attribute in
+            // a retargeted class or referring to a retargeted class.
+            retargeted = false;
+            attribute.accept(programClass, this);
+            if (!retargeted)
+            {
+                attributes[newAtributesCount++] = attribute;
+            }
+        }
+
+        // Clean up any remaining array elements.
+        for (int index = newAtributesCount; index < attributesCount; index++)
+        {
+            attributes[index] = null;
+        }
+
+        // Update the number of attribuets.
+        programClass.u2attributesCount = newAtributesCount;
+    }
+
+
+    // Implementations for AttributeVisitor.
+
+    public void visitAnyAttribute(Clazz clazz, Attribute attribute) {}
+
+
+    public void visitInnerClassesAttribute(Clazz clazz, InnerClassesAttribute innerClassesAttribute)
+    {
+        // Check whether the class itself is retargeted.
+        checkTarget(clazz);
+
+        // Check whether the referenced classes are retargeted.
+        innerClassesAttribute.innerClassEntriesAccept(clazz, this);
+    }
+
+
+    public void visitEnclosingMethodAttribute(Clazz clazz, EnclosingMethodAttribute enclosingMethodAttribute)
+    {
+        // Check whether the class itself is retargeted.
+        checkTarget(clazz);
+
+        // Check whether the referenced class is retargeted.
+        checkTarget(enclosingMethodAttribute.referencedClass);
+    }
+
+
+    // Implementations for InnerClassesInfoVisitor.
+
+    public void visitInnerClassesInfo(Clazz clazz, InnerClassesInfo innerClassesInfo)
+    {
+        // Check whether the inner class or the outer class are retargeted.
+        innerClassesInfo.innerClassConstantAccept(clazz, this);
+        innerClassesInfo.outerClassConstantAccept(clazz, this);
+    }
+
+
+    // Implementations for ConstantVisitor.
+
+    public void visitClassConstant(Clazz clazz, ClassConstant classConstant)
+    {
+        // Check whether the referenced class is retargeted.
+        checkTarget(classConstant.referencedClass);
+    }
+
+
+    // Small utility methods.
+
+    /**
+     * Sets the global return value to true if the given class is retargeted.
+     */
+    private void checkTarget(Clazz clazz)
+    {
+        if (clazz != null &&
+            ClassMerger.getTargetClass(clazz) != null)
+        {
+            retargeted = true;
+        }
+    }
+}
+\ No newline at end of file