Add implementation class of InvocationMirror for VM.

runtime/lib/invocation_mirror_patch.dart

Index: runtime/lib/invocation_mirror_patch.dart
diff --git a/runtime/lib/invocation_mirror_patch.dart b/runtime/lib/invocation_mirror_patch.dart
new file mode 100644
index 0000000000000000000000000000000000000000..eaeea80a4d169e12dd4e7061227613593b0b78cc
--- /dev/null
+++ b/runtime/lib/invocation_mirror_patch.dart
@@ -0,0 +1,27 @@
+// 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.
+
+class _InvocationMirror implements InvocationMirror {
+  static final int METHOD = 0;

[Mads Ager (google), 2012/10/25 08:27:32]

Make these private!

[Lasse Reichstein Nielsen, 2012/10/25 08:42:40]

They are statics inside a private class. There is no way to get to them from
outside the library.

+  static final int GETTER = 1;
+  static final int SETTER = 2;
+
+  final String methodName;
+  final int _type;  // 0 : Method

[Mads Ager (google), 2012/10/25 08:26:57]

I don't understand the comment? Remove?

Could you move this private field to a separate group from the public ones?

[Lasse Reichstein Nielsen, 2012/10/25 08:42:40]

Absolutely. Was writing a comment and decided to add constants instead.
Done.

+  final List positionalArguments;
+  final Map<String,dynamic> namedArguments = null;
+
+  _InvocationMirror(this.methodName, this._type, this.positionalArguments);
+
+  bool get isMethod => _type == METHOD;
+  bool get isAccessor => _type != METHOD;
+  bool get isGetter => _type == GETTER;
+  bool get isSetter => _type == SETTER;
+

[Mads Ager (google), 2012/10/25 08:26:57]

Remove extra empty line.

[Lasse Reichstein Nielsen, 2012/10/25 08:42:40]

Done.

+
+  invokeOn(Object receiver) {
+    throw new UnsupportedOperation("invokeOn not implemented yet");
+  }
+}
+