Add a limited version of ParameterMirrors that can only tell whether they are

runtime/lib/mirrors_impl.dart

 // Copyright (c) 2012, 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.
 
 // VM-specific implementation of the dart:mirrors library.
 
 // These values are allowed to be passed directly over the wire.
 bool isSimpleValue(var value) {
   return (value === null || value is num || value is String || value is bool);
 }
@@ skipping 165 matching lines @@
     }
     buf.add(output);
   }
   return buf.toString();
 }
 
 class _LocalInstanceMirrorImpl extends _LocalObjectMirrorImpl
     implements InstanceMirror {
   _LocalInstanceMirrorImpl(ref,
                            this._class,
-                           this._hasSimpleValue,
                            this._reflectee) : super(ref) {}
 
   var _class;
   InterfaceMirror getClass() {
     if (_class is _LazyInterfaceMirror) {
       _class = _class.resolve(mirrors);
     }
     return _class;
   }
 
   // LocalInstanceMirrors always reflect local instances
   bool hasReflectee = true; 
 
-  var _hasSimpleValue;
   var _reflectee;
   get reflectee() => _reflectee;
 
   String toString() {
-    if (_hasSimpleValue) {
+    if (isSimpleValue(_reflectee)) {
       if (_reflectee is String) {
         return "InstanceMirror on <'${_dartEscape(_reflectee)}'>";
       } else {
         return "InstanceMirror on <$_reflectee>";
       }
     } else {
       return "InstanceMirror on instance of '${getClass().simpleName}'";
     }
   }
 }
@@ skipping 149 matching lines @@
 
   String toString() {
     return "LibraryMirror on '$simpleName'";
   }
 }
 
 class _LocalMethodMirrorImpl extends _LocalMirrorImpl
     implements MethodMirror {
   _LocalMethodMirrorImpl(this.simpleName,
                          this._owner,
+                         this._parameters,
                          this.isStatic,
                          this.isAbstract,
                          this.isGetter,
                          this.isSetter,
                          this.isConstructor,
                          this.isConstConstructor,
                          this.isGenerativeConstructor,
                          this.isRedirectingConstructor,
                          this.isFactoryConstructor) {}
 
@@ skipping 20 matching lines @@
   final bool isAbstract;
   final bool isGetter;
   final bool isSetter;
   final bool isConstructor;
 
   final bool isConstConstructor;
   final bool isGenerativeConstructor;
   final bool isRedirectingConstructor;
   final bool isFactoryConstructor;
 
+  List<ParameterMirror> _parameters;
+  List<ParameterMirror> parameters() => _parameters;
+
   String toString() {
     return "MethodMirror on '$simpleName'";
   }
 }
 
+class _LocalParameterMirrorImpl extends _LocalVariableMirrorImpl
+    implements ParameterMirror {
+  // TODO(rmacnak): Fill these mirrors will real information
+  _LocalParameterMirrorImpl(this.isOptional) 
+    : super(null, null, false, false) {}
+  
+  final bool isOptional;
+
+  TypeMirror get type() => null;
+  String get defaultValue() => null;
+  bool get hasDefaultValue() => null;
+}
+
 class _LocalVariableMirrorImpl extends _LocalMirrorImpl
     implements VariableMirror {
   _LocalVariableMirrorImpl(this.simpleName,
                            this._owner,
                            this.isStatic,
                            this.isFinal) {}
 
   final String simpleName;
 
   var _owner;
@@ skipping 52 matching lines @@
 
   // Creates a new local InstanceMirror
   static InstanceMirror makeLocalInstanceMirror(Object reflectee)
       native 'Mirrors_makeLocalInstanceMirror';
 
   // Creates a new local mirror for some Object.
   static InstanceMirror mirrorOf(Object reflectee) {
     return makeLocalInstanceMirror(reflectee);
   }
 }