Dummy DDC implementation of MirrorSystem

pkg/dev_compiler/tool/input_sdk/private/js_mirrors.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart._js_mirrors;
 
 import 'dart:mirrors';
 import 'dart:_foreign_helper' show JS;
 import 'dart:_internal' as _internal;
 
 String getName(Symbol symbol) {
   if (symbol is _internal.PrivateSymbol) {
     return _internal.PrivateSymbol.getName(symbol);
   } else {
     return _internal.Symbol.getName(symbol as _internal.Symbol);
   }
 }
 
 Symbol getSymbol(name, library) =>
     throw new UnimplementedError("MirrorSystem.getSymbol unimplemented");
 
-final currentJsMirrorSystem = throw new UnimplementedError(
-    "MirrorSystem.currentJsMirrorSystem unimplemented");
+final currentJsMirrorSystem = new JsMirrorSystem();
 
 final _typeMirror = JS('', 'Symbol("_typeMirror")');
 
 InstanceMirror reflect(reflectee) {
   // TODO(vsm): Consider caching the mirror here.  Unlike the type below,
   // reflectee may be a primitive - i.e., we can't just add an expando.
   if (reflectee is Function) {
     return new JsClosureMirror._(reflectee);
   } else {
     return new JsInstanceMirror._(reflectee);
@@ skipping 184 matching lines @@
 }
 
 dynamic _toJsMap(Map<Symbol, dynamic> map) {
   var obj = JS('', '{}');
   map.forEach((Symbol key, value) {
     JS('', '#[#] = #', obj, getName(key), value);
   });
   return obj;
 }
 
+class JsMirrorSystem implements MirrorSystem {
+  get libraries => const {};
+
+  noSuchMethod(Invocation i) {
+    _unimplemented(this.runtimeType, i);
+  }
+}
+
 class JsMirror implements Mirror {
   noSuchMethod(Invocation i) {
     _unimplemented(this.runtimeType, i);
   }
 }
 
 class JsCombinatorMirror extends JsMirror implements CombinatorMirror {}
 
 class JsDeclarationMirror extends JsMirror implements DeclarationMirror {}
 
@@ skipping 428 matching lines @@
       var param =
           new JsParameterMirror._(new Symbol(''), _wrap(type), metadata);
       params[i + args.length] = param;
     }
 
     _params = new List.unmodifiable(params);
   }
 
   String toString() => "MethodMirror on '$_name'";
 }