1 files changed, 100 insertions, 0 deletions
diff --git a/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/visitor/ConcreteClassDownTraveler.java b/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/visitor/ConcreteClassDownTraveler.java
new file mode 100644
index 0000000000..1169d8d291
--- /dev/null
+++ b/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/visitor/ConcreteClassDownTraveler.java
@@ -0,0 +1,100 @@
+/*
+ * 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.visitor;
+
+import proguard.classfile.*;
+
+
+/**
+ * This <code>ClassVisitor</code> lets a given <code>ClassVisitor</code>
+ * travel to the first concrete subclasses down in its hierarchy of abstract
+ * classes and concrete classes.
+ *
+ * @author Eric Lafortune
+ */
+public class ConcreteClassDownTraveler
+implements   ClassVisitor
+{
+    private final ClassVisitor classVisitor;
+
+
+    /**
+     * Creates a new ConcreteClassDownTraveler.
+     * @param classVisitor     the <code>ClassVisitor</code> to
+     *                         which visits will be delegated.
+     */
+    public ConcreteClassDownTraveler(ClassVisitor classVisitor)
+    {
+        this.classVisitor = classVisitor;
+    }
+
+
+    // Implementations for ClassVisitor.
+
+    public void visitProgramClass(ProgramClass programClass)
+    {
+        // Is this an abstract class or an interface?
+        if ((programClass.getAccessFlags() &
+             (ClassConstants.ACC_INTERFACE |
+              ClassConstants.ACC_ABSTRACT)) != 0)
+        {
+            // Travel down the hierarchy.
+            Clazz[] subClasses = programClass.subClasses;
+            if (subClasses != null)
+            {
+                for (int index = 0; index < subClasses.length; index++)
+                {
+                    subClasses[index].accept(this);
+                }
+            }
+        }
+        else
+        {
+            // Visit the class. Don't descend any further.
+            programClass.accept(classVisitor);
+        }
+    }
+
+
+    public void visitLibraryClass(LibraryClass libraryClass)
+    {
+        // Is this an abstract class or interface?
+        if ((libraryClass.getAccessFlags() &
+             (ClassConstants.ACC_INTERFACE |
+              ClassConstants.ACC_ABSTRACT)) != 0)
+        {
+            // Travel down the hierarchy.
+            Clazz[] subClasses = libraryClass.subClasses;
+            if (subClasses != null)
+            {
+                for (int index = 0; index < subClasses.length; index++)
+                {
+                    subClasses[index].accept(this);
+                }
+            }
+        }
+        else
+        {
+            // Visit the class. Don't descend any further.
+            libraryClass.accept(classVisitor);
+        }
+    }
+}