Implement new optional parameters syntax in the vm (issue 4290).

tests/language/function_type_alias2_test.dart

Index: tests/language/function_type_alias2_test.dart
===================================================================
--- tests/language/function_type_alias2_test.dart	(revision 12003)
+++ tests/language/function_type_alias2_test.dart	(working copy)
@@ -3,30 +3,52 @@
 // BSD-style license that can be found in the LICENSE file.
 // VMOptions=--enable_type_checks
 //
-// Dart test for function type alias with named optional parameters.
+// Dart test for function type alias with optional parameters.
 
 typedef int f1<T>([int a, int b, T c]);
 typedef int f2<T>([int a, int b, T d]);
+typedef int f3<T>({int a, int b, T c});
+typedef int f4<T>({int a, int b, T d});
 
 class A<T> {
-  int baz([int a, int b, T c]) {
-  }
+  int baz([int a, int b, T c]) { }
+  int bar({int a, int b, T c}) { }
 }
 
-int baz([int a, int b, int c]) {
-}
+int baz([int a, int b, int c]) { }
 
+int bar({int a, int b, int c}) { }
+
 main() {
+  // TODO(regis): The expectations below will change once we run this test with
+  // --reject_named_argument_as_positional which is still too early to do at
+  // this time.
   Expect.isTrue(baz is f1);
+  Expect.isFalse(baz is f3);
+  Expect.isFalse(bar is f1);
+  Expect.isTrue(bar is f3);
+  Expect.isTrue(baz is f1);
   Expect.isTrue(baz is f1<int>);
+  Expect.isTrue(bar is f3<int>);
   Expect.isFalse(baz is f1<double>);
+  Expect.isFalse(bar is f3<double>);
   Expect.isFalse(baz is f2);
+  Expect.isFalse(bar is f4);
   Expect.isFalse(baz is f2<int>);
+  Expect.isFalse(bar is f2<int>);
 
   A<int> a = new A<int>();
   Expect.isTrue(a.baz is f1);
+  Expect.isFalse(a.baz is f3);
+  Expect.isFalse(a.bar is f1);
+  Expect.isTrue(a.bar is f3);
+  Expect.isTrue(a.baz is f1);
   Expect.isTrue(a.baz is f1<int>);
+  Expect.isTrue(a.bar is f3<int>);
   Expect.isFalse(a.baz is f1<double>);
+  Expect.isFalse(a.bar is f3<double>);
   Expect.isFalse(a.baz is f2);
+  Expect.isFalse(a.bar is f4);
   Expect.isFalse(a.baz is f2<int>);
+  Expect.isFalse(a.bar is f2<int>);
 }