Smart enter for while statement

#KT-3600 In Progress

compiler/frontend/src/org/jetbrains/jet/lang/psi/JetWhileExpression.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2013 JetBrains s.r.o.
+ * Copyright 2010-2014 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,7 +17,10 @@
 package org.jetbrains.jet.lang.psi;
 
 import com.intellij.lang.ASTNode;
+import com.intellij.psi.PsiElement;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.jetbrains.jet.lexer.JetTokens;
 
 public class JetWhileExpression extends JetWhileExpressionBase {
     public JetWhileExpression(@NotNull ASTNode node) {
@@ -28,4 +31,15 @@ public class JetWhileExpression extends JetWhileExpressionBase {
     public <R, D> R accept(@NotNull JetVisitor<R, D> visitor, D data) {
         return visitor.visitWhileExpression(this, data);
     }
+
+    @Nullable
+    @IfNotParsed
+    public PsiElement getLeftParenthesis() {
+        return findChildByType(JetTokens.LPAR);
+    }
+
+    @Nullable @IfNotParsed
+    public PsiElement getRightParenthesis() {
+        return findChildByType(JetTokens.RPAR);
+    }
 }