HasSignature interface

com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/RRootNode.java

@@ -37,7 +37,7 @@ import com.oracle.truffle.r.runtime.env.frame.*;
  * The base class for R code that can be executed, namely {@link FunctionDefinitionNode} and
  * {@link RBuiltinNode}.
  */
-public abstract class RRootNode extends RootNode {
+public abstract class RRootNode extends RootNode implements HasSignature {
 
     @CompilationFinal private StableValue<MaterializedFrame> enclosingFrameAssumption;
     @CompilationFinal private StableValue<FrameDescriptor> enclosingFrameDescriptorAssumption;
@@ -111,6 +111,10 @@ public abstract class RRootNode extends RootNode {
         return formalArguments;
     }
 
+    public ArgumentsSignature getSignature() {
+        return formalArguments.getSignature();
+    }
+
     @TruffleBoundary
     public String getSourceCode() {
         SourceSection ss = getSourceSection();

com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/HasSignature.java

+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.oracle.truffle.r.runtime;
+
+public interface HasSignature {
+    ArgumentsSignature getSignature();
+}