dart2js: mirrors. Support Typedef.reflectedType.

sdk/lib/_internal/compiler/js_lib/js_mirrors.dart

Index: sdk/lib/_internal/compiler/js_lib/js_mirrors.dart
diff --git a/sdk/lib/_internal/compiler/js_lib/js_mirrors.dart b/sdk/lib/_internal/compiler/js_lib/js_mirrors.dart
index 03fc44a4a856083abd3b58843bcd2a84d2027236..157d916166140f5ed1cae5b5840cff94b11571a7 100644
--- a/sdk/lib/_internal/compiler/js_lib/js_mirrors.dart
+++ b/sdk/lib/_internal/compiler/js_lib/js_mirrors.dart
@@ -2518,21 +2518,17 @@ class JsTypedefMirror extends JsDeclarationMirror implements TypedefMirror {
 
   bool get hasReflectedType => throw new UnimplementedError();
 
-  Type get reflectedType => throw new UnimplementedError();
+  Type get reflectedType => createRuntimeType(_mangledName);
 
-  // TODO(ahe): Implement this method.
+  // TODO(floitsch): Implement this method.
   List<TypeVariableMirror> get typeVariables => throw new UnimplementedError();
 
-  // TODO(ahe): Implement this method.
-  List<TypeMirror> get typeArguments => throw new UnimplementedError();
+  List<TypeMirror> get typeArguments => const <TypeMirror>[];

[karlklose, 2014/09/19 10:39:51]

Do you plan to create an InstantiatedJsTypedefMirror for typedefs with type
arguments?

Otherwise these three methods should probably stay unimplemented.

[floitsch, 2014/09/19 11:42:09]

They are needed by the createRuntimeType.
Might be thet JsTypeBoundTypedefMirror is what we want, but we can revisit when
we look at it.

 
-  // TODO(ahe): Implement this method.
-  bool get isOriginalDeclaration => throw new UnimplementedError();
+  bool get isOriginalDeclaration => true;
 
-  // TODO(ahe): Implement this method.
-  TypeMirror get originalDeclaration => throw new UnimplementedError();
+  TypeMirror get originalDeclaration => this;
 
-  // TODO(ahe): Implement this method.

[karlklose, 2014/09/19 10:39:51]

Restore TODO (with 'ahe' -> 'floitsch').

[floitsch, 2014/09/19 11:42:09]

Done.

   DeclarationMirror get owner => throw new UnimplementedError();
 
   // TODO(ahe): Implement this method.