Adding package:smoke. This CL includes the intial APIs, a mirror-based

pkg/smoke/lib/src/implementation.dart

+// Copyright (c) 2014, 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.
+
+/// A library that is used to select the default implementation of smoke. During
+/// development we use a default mirror-based implementation, for deployment we
+/// let the main program set programatically what implementation to use (likely
+/// one based on static code generation).
+library smoke.src.implementation;
+
+// IMPORTANT NOTE: This file is edited by a transformer in this package
+// (default_transformer.dart), so any edits here should be coordinated with
+// changes there.
+
+import 'package:smoke/mirrors.dart';
+import 'package:smoke/smoke.dart';
+
+/// Implementation of [ObjectAccessorService] in use, initialized lazily so it
+/// can be replaced at deployment time with an efficient alternative.
+ObjectAccessorService objectAccessor =
+    new ReflectiveObjectAccessorService();
+
+/// Implementation of [TypeInspectorService] in use, initialized lazily so it
+/// can be replaced at deployment time with an efficient alternative.
+TypeInspectorService typeInspector =
+    new ReflectiveTypeInspectorService();
+
+/// Implementation of [SymbolConverterService] in use, initialized lazily so it
+/// can be replaced at deployment time with an efficient alternative.
+SymbolConverterService symbolConverter =
+    new ReflectiveSymbolConverterService();
+
+throwNotConfiguredError() {
+  throw new Exception('The "smoke" library has not been configured. '
+      'Make sure you import and configure one of the implementations ('
+      'package:smoke/mirrors.dart or package:smoke/static.dart).');
+}