1 files changed, 128 insertions, 0 deletions
diff --git a/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/visitor/MethodImplementationTraveler.java b/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/visitor/MethodImplementationTraveler.java
new file mode 100644
index 0000000000..1ff7b138dd
--- /dev/null
+++ b/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/visitor/MethodImplementationTraveler.java
@@ -0,0 +1,128 @@
+/*
+ * 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.*;
+import proguard.classfile.util.SimplifiedVisitor;
+
+/**
+ * This <code>MemberVisitor</code> lets a given <code>MemberVisitor</code>
+ * travel to all concrete and abstract implementations of the visited methods
+ * in their class hierarchies.
+ *
+ * @author Eric Lafortune
+ */
+public class MethodImplementationTraveler
+extends      SimplifiedVisitor
+implements   MemberVisitor
+{
+    private final boolean       visitThisMethod;
+    private final boolean       visitSuperMethods;
+    private final boolean       visitInterfaceMethods;
+    private final boolean       visitOverridingMethods;
+    private final MemberVisitor memberVisitor;
+
+
+    /**
+     * Creates a new MethodImplementationTraveler.
+     * @param visitThisMethod        specifies whether to visit the originally
+     *                               visited methods.
+     * @param visitSuperMethods      specifies whether to visit the method in
+     *                               the super classes.
+     * @param visitInterfaceMethods  specifies whether to visit the method in
+     *                               the interface classes.
+     * @param visitOverridingMethods specifies whether to visit the method in
+     *                               the subclasses.
+     * @param memberVisitor          the <code>MemberVisitor</code> to which
+     *                               visits will be delegated.
+     */
+    public MethodImplementationTraveler(boolean       visitThisMethod,
+                                        boolean       visitSuperMethods,
+                                        boolean       visitInterfaceMethods,
+                                        boolean       visitOverridingMethods,
+                                        MemberVisitor memberVisitor)
+    {
+        this.visitThisMethod        = visitThisMethod;
+        this.visitSuperMethods      = visitSuperMethods;
+        this.visitInterfaceMethods  = visitInterfaceMethods;
+        this.visitOverridingMethods = visitOverridingMethods;
+        this.memberVisitor          = memberVisitor;
+    }
+
+
+    // Implementations for MemberVisitor.
+
+    public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod)
+    {
+        if (visitThisMethod)
+        {
+            programMethod.accept(programClass, memberVisitor);
+        }
+
+        if (!isSpecial(programClass, programMethod))
+        {
+            programClass.hierarchyAccept(false,
+                                         visitSuperMethods,
+                                         visitInterfaceMethods,
+                                         visitOverridingMethods,
+                                         new NamedMethodVisitor(programMethod.getName(programClass),
+                                                                programMethod.getDescriptor(programClass),
+                                         new MemberAccessFilter(0,
+                                                                ClassConstants.ACC_PRIVATE |
+                                                                ClassConstants.ACC_STATIC,
+                                         memberVisitor)));
+        }
+    }
+
+
+    public void visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod)
+    {
+        if (visitThisMethod)
+        {
+            libraryMethod.accept(libraryClass, memberVisitor);
+        }
+
+        if (!isSpecial(libraryClass, libraryMethod))
+        {
+            libraryClass.hierarchyAccept(false,
+                                         visitSuperMethods,
+                                         visitInterfaceMethods,
+                                         visitOverridingMethods,
+                                         new NamedMethodVisitor(libraryMethod.getName(libraryClass),
+                                                                libraryMethod.getDescriptor(libraryClass),
+                                         new MemberAccessFilter(0,
+                                                                ClassConstants.ACC_PRIVATE |
+                                                                ClassConstants.ACC_STATIC,
+                                         memberVisitor)));
+        }
+    }
+
+
+    // Small utility methods.
+
+    private boolean isSpecial(Clazz clazz, Method method)
+    {
+        return (method.getAccessFlags() &
+                (ClassConstants.ACC_PRIVATE |
+                 ClassConstants.ACC_STATIC)) != 0 ||
+               method.getName(clazz).equals(ClassConstants.METHOD_NAME_INIT);
+    }
+}