--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/expression/SLParenExpressionNode.java	Fri Aug 01 16:30:22 2014 -0700
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2014, 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.sl.nodes.expression;
+
+import java.math.*;
+
+import com.oracle.truffle.api.frame.*;
+import com.oracle.truffle.api.nodes.*;
+import com.oracle.truffle.api.source.*;
+import com.oracle.truffle.sl.nodes.*;
+import com.oracle.truffle.sl.runtime.*;
+
+/**
+ * A {@link SLExpressionNode} that represents a parenthesized expression; it simply returns the
+ * value of the enclosed (child) expression. It is represented separately in the AST for the purpose
+ * of correct source attribution; this preserves the lexical relationship between the two
+ * parentheses and allows a tool to describe the expression as distinct from its contents.
+ */
+@NodeInfo(description = "A parenthesized expression")
+public class SLParenExpressionNode extends SLExpressionNode {
+
+    private final SLExpressionNode expression;
+
+    public SLParenExpressionNode(SourceSection src, SLExpressionNode expression) {
+        super(src);
+        this.expression = insert(expression);
+    }
+
+    @Override
+    public Object executeGeneric(VirtualFrame frame) {
+        return expression.executeGeneric(frame);
+    }
+
+    @Override
+    public long executeLong(VirtualFrame frame) throws UnexpectedResultException {
+        return expression.executeLong(frame);
+    }
+
+    @Override
+    public BigInteger executeBigInteger(VirtualFrame frame) throws UnexpectedResultException {
+        return expression.executeBigInteger(frame);
+    }
+
+    @Override
+    public boolean executeBoolean(VirtualFrame frame) throws UnexpectedResultException {
+        return expression.executeBoolean(frame);
+    }
+
+    @Override
+    public String executeString(VirtualFrame frame) throws UnexpectedResultException {
+        return expression.executeString(frame);
+    }
+
+    @Override
+    public SLFunction executeFunction(VirtualFrame frame) throws UnexpectedResultException {
+        return expression.executeFunction(frame);
+    }
+
+    @Override
+    public SLNull executeNull(VirtualFrame frame) throws UnexpectedResultException {
+        return expression.executeNull(frame);
+    }
+}