1 files changed, 69 insertions, 0 deletions
diff --git a/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/visitor/ImplementedClassConstantFilter.java b/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/visitor/ImplementedClassConstantFilter.java
new file mode 100644
index 0000000000..b9fd44be9e
--- /dev/null
+++ b/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/visitor/ImplementedClassConstantFilter.java
@@ -0,0 +1,69 @@
+/*
+ * 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.Clazz;
+import proguard.classfile.constant.ClassConstant;
+import proguard.classfile.constant.visitor.ConstantVisitor;
+import proguard.classfile.util.SimplifiedVisitor;
+
+/**
+ * This <code>ConstantVisitor</code> delegates its visits to class constants
+ * to another given <code>ConstantVisitor</code>, except for classes that
+ * extend or implement a given class. This exception includes the class itself.
+ *
+ * @author Eric Lafortune
+ */
+public class ImplementedClassConstantFilter
+extends      SimplifiedVisitor
+implements   ConstantVisitor
+{
+    private final Clazz           implementedClass;
+    private final ConstantVisitor constantVisitor;
+
+
+    /**
+     * Creates a new ImplementedClassConstantFilter.
+     * @param implementedClass the class whose implementations will not be
+     *                         visited.
+     * @param constantVisitor  the <code>ConstantVisitor</code> to which visits
+     *                         will be delegated.
+     */
+    public ImplementedClassConstantFilter(Clazz           implementedClass,
+                                          ConstantVisitor constantVisitor)
+    {
+        this.implementedClass = implementedClass;
+        this.constantVisitor  = constantVisitor;
+    }
+
+
+    // Implementations for ConstantVisitor.
+
+    public void visitClassConstant(Clazz clazz, ClassConstant classConstant)
+    {
+        Clazz referencedClass = classConstant.referencedClass;
+        if (referencedClass == null ||
+            !referencedClass.extendsOrImplements(implementedClass))
+        {
+            constantVisitor.visitClassConstant(clazz, classConstant);
+        }
+    }
+}
+\ No newline at end of file