1 files changed, 103 insertions, 0 deletions
diff --git a/src/proguard/classfile/attribute/preverification/LessZeroFrame.java b/src/proguard/classfile/attribute/preverification/LessZeroFrame.java
new file mode 100644
index 0000000..fcc8e0a
--- /dev/null
+++ b/src/proguard/classfile/attribute/preverification/LessZeroFrame.java
@@ -0,0 +1,103 @@
+/*
+ * 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 an "chop frame".
+ *
+ * @author Eric Lafortune
+ */
+public class LessZeroFrame extends StackMapFrame
+{
+    public int choppedVariablesCount;
+
+
+    /**
+     * Creates an uninitialized LessZeroFrame.
+     */
+    public LessZeroFrame()
+    {
+    }
+
+
+    /**
+     * Creates a LessZeroFrame with the given tag.
+     */
+    public LessZeroFrame(int tag)
+    {
+        choppedVariablesCount = LESS_ZERO_FRAME + 3 - tag;
+    }
+
+
+    /**
+     * Creates a LessZeroFrame with the given number of chopped variables.
+     */
+    public LessZeroFrame(byte choppedVariablesCount)
+    {
+        this.choppedVariablesCount = (int)choppedVariablesCount;
+    }
+
+
+    // Implementations for StackMapFrame.
+
+    public int getTag()
+    {
+        return LESS_ZERO_FRAME + 3 - choppedVariablesCount;
+    }
+
+
+    public void accept(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, StackMapFrameVisitor stackMapFrameVisitor)
+    {
+        stackMapFrameVisitor.visitLessZeroFrame(clazz, method, codeAttribute, offset, this);
+    }
+
+
+    // Implementations for Object.
+
+    public boolean equals(Object object)
+    {
+        if (!super.equals(object))
+        {
+            return false;
+        }
+
+        LessZeroFrame other = (LessZeroFrame)object;
+
+        return this.u2offsetDelta == other.u2offsetDelta &&
+               this.choppedVariablesCount != other.choppedVariablesCount;
+    }
+
+
+    public int hashCode()
+    {
+        return super.hashCode() ^ choppedVariablesCount;
+    }
+
+
+    public String toString()
+    {
+        return super.toString()+"Var: (chopped "+choppedVariablesCount+"), Stack: (empty)";
+    }
+}