--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk/nashorn/internal/ir/TernaryNode.java	Fri Dec 21 16:36:24 2012 -0400
@@ -0,0 +1,140 @@
+/*
+ * Copyright (c) 2010, 2012, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 jdk.nashorn.internal.ir;
+
+import jdk.nashorn.internal.ir.visitor.NodeVisitor;
+import jdk.nashorn.internal.runtime.Source;
+
+/**
+ * TernaryNode nodes represent three operand operations (?:).
+ */
+public class TernaryNode extends BinaryNode {
+    /** Third argument. */
+    private Node third;
+
+    /**
+     * Constructor
+     *
+     * @param source the source
+     * @param token  token
+     * @param lhs    left hand side node
+     * @param rhs    right hand side node
+     * @param third  third node
+     */
+    public TernaryNode(final Source source, final long token, final Node lhs, final Node rhs, final Node third) {
+        super(source, token, lhs, rhs);
+
+        this.finish = third.getFinish();
+        this.third = third;
+    }
+
+    private TernaryNode(final TernaryNode ternaryNode, final CopyState cs) {
+        super(ternaryNode, cs);
+
+        third = cs.existingOrCopy(ternaryNode.third);
+    }
+
+    @Override
+    protected Node copy(final CopyState cs) {
+        return new TernaryNode(this, cs);
+    }
+
+    @Override
+    public boolean equals(final Object other) {
+        if (!super.equals(other)) {
+            return false;
+        }
+        return third.equals(((TernaryNode)other).third());
+    }
+
+    @Override
+    public int hashCode() {
+        return super.hashCode() ^ third().hashCode();
+    }
+
+    @Override
+    public Node accept(final NodeVisitor visitor) {
+        if (visitor.enter(this) != null) {
+            lhs = lhs.accept(visitor);
+            rhs = rhs.accept(visitor);
+            third = third.accept(visitor);
+            return visitor.leave(this);
+        }
+
+        return this;
+    }
+
+    @Override
+    public void toString(final StringBuilder sb) {
+        final boolean lhsParen   = tokenType().needsParens(lhs().tokenType(), true);
+        final boolean rhsParen   = tokenType().needsParens(rhs().tokenType(), false);
+        final boolean thirdParen = tokenType().needsParens(third().tokenType(), false);
+
+        if (lhsParen) {
+            sb.append('(');
+        }
+        lhs().toString(sb);
+        if (lhsParen) {
+            sb.append(')');
+        }
+
+        sb.append(" ? ");
+
+        if (rhsParen) {
+            sb.append('(');
+        }
+        rhs().toString(sb);
+        if (rhsParen) {
+            sb.append(')');
+        }
+
+        sb.append(" : ");
+
+        if (thirdParen) {
+            sb.append('(');
+        }
+        third().toString(sb);
+        if (thirdParen) {
+            sb.append(')');
+        }
+    }
+
+    /**
+     * Get the "third" node for this ternary expression, i.e. "z" in x ? y : z
+     * @return a node
+     */
+    public Node third() {
+        return third;
+    }
+
+    /**
+     * Reset the "third" node for this ternary expression, i.e. "z" in x ? y : z
+     * @param third a node
+     */
+    public void setThird(final Node third) {
+        this.third = third;
+    }
+}