--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/core/YieldingCoreMethodNode.java	Tue Jan 07 18:53:04 2014 +0100
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
+ * code is released under a tri EPL/GPL/LGPL license. You can use it,
+ * redistribute it and/or modify it under the terms of the:
+ *
+ * Eclipse Public License version 1.0
+ * GNU General Public License version 2
+ * GNU Lesser General Public License version 2.1
+ */
+package com.oracle.truffle.ruby.nodes.core;
+
+import com.oracle.truffle.api.*;
+import com.oracle.truffle.api.frame.*;
+import com.oracle.truffle.ruby.nodes.yield.*;
+import com.oracle.truffle.ruby.runtime.*;
+import com.oracle.truffle.ruby.runtime.core.*;
+
+public abstract class YieldingCoreMethodNode extends CoreMethodNode {
+
+    @Child protected YieldDispatchNode dispatchNode;
+
+    public YieldingCoreMethodNode(RubyContext context, SourceSection sourceSection) {
+        super(context, sourceSection);
+        dispatchNode = adoptChild(new UninitializedYieldDispatchNode(context, getSourceSection()));
+    }
+
+    public YieldingCoreMethodNode(YieldingCoreMethodNode prev) {
+        super(prev);
+        dispatchNode = adoptChild(prev.dispatchNode);
+    }
+
+    public Object yield(VirtualFrame frame, RubyProc block, Object... arguments) {
+        return dispatchNode.dispatch(frame, block, arguments);
+    }
+
+    public boolean yieldBoolean(VirtualFrame frame, RubyProc block, Object... arguments) {
+        return GeneralConversions.toBoolean(dispatchNode.dispatch(frame, block, arguments));
+    }
+
+}