1 files changed, 74 insertions, 0 deletions
diff --git a/src/proguard/classfile/attribute/preverification/SameZeroFrame.java b/src/proguard/classfile/attribute/preverification/SameZeroFrame.java
new file mode 100644
index 0000000..64b17f5
--- /dev/null
+++ b/src/proguard/classfile/attribute/preverification/SameZeroFrame.java
@@ -0,0 +1,74 @@
+/*
+ * 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.preverification;
+
+import proguard.classfile.*;
+import proguard.classfile.attribute.CodeAttribute;
+import proguard.classfile.attribute.preverification.visitor.StackMapFrameVisitor;
+
+/**
+ * This StackMapFrame represents a "same frame" or a "same frame extended".
+ *
+ * @author Eric Lafortune
+ * @noinspection PointlessArithmeticExpression
+ */
+public class SameZeroFrame extends StackMapFrame
+{
+    /**
+     * Creates an uninitialized SameZeroFrame.
+     */
+    public SameZeroFrame()
+    {
+    }
+
+
+    /**
+     * Creates a SameZeroFrame with the given tag.
+     */
+    public SameZeroFrame(int tag)
+    {
+        u2offsetDelta = tag - SAME_ZERO_FRAME;
+    }
+
+
+    // Implementations for StackMapFrame.
+
+    public int getTag()
+    {
+        return u2offsetDelta < 64 ?
+            SAME_ZERO_FRAME + u2offsetDelta :
+            SAME_ZERO_FRAME_EXTENDED;
+    }
+
+
+    public void accept(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, StackMapFrameVisitor stackMapFrameVisitor)
+    {
+        stackMapFrameVisitor.visitSameZeroFrame(clazz, method, codeAttribute, offset, this);
+    }
+
+
+    // Implementations for Object.
+
+    public String toString()
+    {
+        return super.toString()+"Var: ..., Stack: (empty)";
+    }
+}