1 files changed, 161 insertions, 0 deletions
diff --git a/src/proguard/classfile/attribute/preverification/MoreZeroFrame.java b/src/proguard/classfile/attribute/preverification/MoreZeroFrame.java
new file mode 100644
index 0000000..881f188
--- /dev/null
+++ b/src/proguard/classfile/attribute/preverification/MoreZeroFrame.java
@@ -0,0 +1,161 @@
+/*
+ * 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.*;
+
+/**
+ * This StackMapFrame represents an "append frame".
+ *
+ * @author Eric Lafortune
+ */
+public class MoreZeroFrame extends StackMapFrame
+{
+    public int                additionalVariablesCount;
+    public VerificationType[] additionalVariables;
+
+
+    /**
+     * Creates an uninitialized MoreZeroFrame.
+     */
+    public MoreZeroFrame()
+    {
+    }
+
+
+    /**
+     * Creates a MoreZeroFrame with the given tag.
+     */
+    public MoreZeroFrame(int tag)
+    {
+        additionalVariablesCount = tag + 1 - MORE_ZERO_FRAME;
+    }
+
+
+    /**
+     * Creates a MoreZeroFrame with the given additional variables.
+     */
+    public MoreZeroFrame(VerificationType[] additionalVariables)
+    {
+        this(additionalVariables.length, additionalVariables);
+    }
+
+
+    /**
+     * Creates a MoreZeroFrame with the given additional variables.
+     */
+    public MoreZeroFrame(int                additionalVariablesCount,
+                         VerificationType[] additionalVariables)
+    {
+        this.additionalVariablesCount = additionalVariablesCount;
+        this.additionalVariables      = additionalVariables;
+    }
+
+
+    /**
+     * Applies the given verification type visitor to all variables.
+     */
+    public void additionalVariablesAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, VerificationTypeVisitor verificationTypeVisitor)
+    {
+        for (int index = 0; index < additionalVariablesCount; index++)
+        {
+            additionalVariables[index].accept(clazz, method, codeAttribute, offset, verificationTypeVisitor);
+        }
+    }
+
+
+    // Implementations for StackMapFrame.
+
+    public int getTag()
+    {
+        return MORE_ZERO_FRAME + additionalVariablesCount - 1;
+    }
+
+
+    public void accept(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, StackMapFrameVisitor stackMapFrameVisitor)
+    {
+        stackMapFrameVisitor.visitMoreZeroFrame(clazz, method, codeAttribute, offset, this);
+    }
+
+
+    // Implementations for Object.
+
+    public boolean equals(Object object)
+    {
+        if (!super.equals(object))
+        {
+            return false;
+        }
+
+        MoreZeroFrame other = (MoreZeroFrame)object;
+
+        if (this.u2offsetDelta            != other.u2offsetDelta ||
+            this.additionalVariablesCount != other.additionalVariablesCount)
+        {
+            return false;
+        }
+
+        for (int index = 0; index < additionalVariablesCount; index++)
+        {
+            VerificationType thisType  = this.additionalVariables[index];
+            VerificationType otherType = other.additionalVariables[index];
+
+            if (!thisType.equals(otherType))
+            {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+
+    public int hashCode()
+    {
+        int hashCode = super.hashCode();
+
+        for (int index = 0; index < additionalVariablesCount; index++)
+        {
+            hashCode ^= additionalVariables[index].hashCode();
+        }
+
+        return hashCode;
+    }
+
+
+    public String toString()
+    {
+        StringBuffer buffer = new StringBuffer(super.toString()).append("Var: ...");
+
+        for (int index = 0; index < additionalVariablesCount; index++)
+        {
+            buffer = buffer.append('[')
+                           .append(additionalVariables[index].toString())
+                           .append(']');
+        }
+
+        buffer.append(", Stack: (empty)");
+
+        return buffer.toString();
+    }
+}