ParenthesizedExpression added

src/org/jetbrains/jet/j2k/ast/ParenthesizedExpression.java

@@ -0,0 +1,20 @@
+package org.jetbrains.jet.j2k.ast;
+
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * @author ignatov
+ */
+public class ParenthesizedExpression extends Expression {
+  private final Expression myExpression;
+
+  public ParenthesizedExpression(Expression expression) {
+    myExpression = expression;
+  }
+
+  @NotNull
+  @Override
+  public String toKotlin() {
+    return "(" + myExpression.toKotlin() + ")";
+  }
+}

src/org/jetbrains/jet/j2k/visitors/ExpressionVisitor.java

@@ -165,6 +165,9 @@ public class ExpressionVisitor extends StatementVisitor implements Visitor {
   @Override
   public void visitParenthesizedExpression(PsiParenthesizedExpression expression) {
     super.visitParenthesizedExpression(expression);
+    myResult = new ParenthesizedExpression(
+      expressionToExpression(expression.getExpression())
+    );
   }
 
   @Override

test/org/jetbrains/jet/j2k/ast/ParenthesizedExpressionTest.java

@@ -0,0 +1,17 @@
+package org.jetbrains.jet.j2k.ast;
+
+import junit.framework.Assert;
+import org.jetbrains.jet.j2k.JetTestCaseBase;
+
+/**
+ * @author ignatov
+ */
+public class ParenthesizedExpressionTest extends JetTestCaseBase {
+  public void testParenthesized() throws Exception {
+    Assert.assertEquals(expressionToSingleLineKotlin("(1 + 2)"), "((1 + 2))");
+  }
+
+  public void testParenthesized2() throws Exception {
+    Assert.assertEquals(expressionToSingleLineKotlin("(o.toString() + \"abc\")"), "((o.toString() + \"abc\"))");
+  }
+}