1 files changed, 117 insertions, 0 deletions
diff --git a/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/attribute/preverification/StackMapFrame.java b/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/attribute/preverification/StackMapFrame.java
new file mode 100644
index 0000000000..474650cc2a
--- /dev/null
+++ b/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/attribute/preverification/StackMapFrame.java
@@ -0,0 +1,117 @@
+/*
+ * ProGuard -- shrinking, optimization, obfuscation, and preverification
+ *             of Java bytecode.
+ *
+ * Copyright (c) 2002-2017 Eric Lafortune @ GuardSquare
+ *
+ * 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 abstract class represents a stack map frame. Specific types
+ * of entries are subclassed from it.
+ *
+ * @author Eric Lafortune
+ */
+public abstract class StackMapFrame implements VisitorAccepter
+{
+    public static final int SAME_ZERO_FRAME          =   0;
+    public static final int SAME_ONE_FRAME           =  64;
+    public static final int SAME_ONE_FRAME_EXTENDED  = 247;
+    public static final int LESS_ZERO_FRAME          = 248;
+    public static final int SAME_ZERO_FRAME_EXTENDED = 251;
+    public static final int MORE_ZERO_FRAME          = 252;
+    public static final int FULL_FRAME               = 255;
+
+
+    public int u2offsetDelta;
+
+    /**
+     * An extra field in which visitors can store information.
+     */
+    public Object visitorInfo;
+
+
+
+    /**
+     * Returns the bytecode offset delta relative to the previous stack map
+     * frame.
+     */
+    public int getOffsetDelta()
+    {
+        return u2offsetDelta;
+    }
+
+
+    // Abstract methods to be implemented by extensions.
+
+    /**
+     * Returns the stack map frame tag that specifies the entry type.
+     */
+    public abstract int getTag();
+
+
+    /**
+     * Accepts the given visitor.
+     */
+    public abstract void accept(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, StackMapFrameVisitor stackMapFrameVisitor);
+
+
+    // Implementations for VisitorAccepter.
+
+    public Object getVisitorInfo()
+    {
+        return visitorInfo;
+    }
+
+    public void setVisitorInfo(Object visitorInfo)
+    {
+        this.visitorInfo = visitorInfo;
+    }
+
+
+    // Implementations for Object.
+
+    public boolean equals(Object object)
+    {
+        if (object == null ||
+            this.getClass() != object.getClass())
+        {
+            return false;
+        }
+
+        StackMapFrame other = (StackMapFrame)object;
+
+        return this.u2offsetDelta == other.u2offsetDelta;
+    }
+
+
+    public int hashCode()
+    {
+        return getClass().hashCode() ^
+               u2offsetDelta;
+    }
+
+
+    public String toString()
+    {
+        return "[" + u2offsetDelta + "] ";
+    }
+}