feat(di): introduced @NgInjectableService to make di codegen easier

lib/core/directive.dart

@@ -418,6 +418,7 @@ abstract class NgDetachAware {
   void detach();
 }
 
+@NgInjectableService()
 class DirectiveMap extends AnnotationMap<NgAnnotation> {
   DirectiveMap(Injector injector, MetadataExtractor metadataExtractor,
       FieldMetadataExtractor fieldMetadataExtractor)
@@ -445,6 +446,7 @@ class DirectiveMap extends AnnotationMap<NgAnnotation> {
   }
 }
 
+@NgInjectableService()
 class FieldMetadataExtractor {
   List<TypeMirror> _fieldAnnotations = [reflectType(NgAttr),
       reflectType(NgOneWay), reflectType(NgOneWayOneTime),

lib/core/exception_handler.dart

@@ -7,6 +7,7 @@ part of angular.core;
  * In your application it is expected that this service is overridden with
  * your implementation which can store the exception for later processing.
  */
+@NgInjectableService()
 class ExceptionHandler {
 
  /**

lib/core/filter.dart

@@ -37,6 +37,7 @@ class NgFilter {
 /**
  * Registry of filters at runtime.
  */
+@NgInjectableService()
 class FilterMap extends AnnotationMap<NgFilter> {
   Injector _injector;
   FilterMap(Injector injector, MetadataExtractor extractMetadata) : super(injector, extractMetadata) {

lib/core/interpolate.dart

@@ -34,6 +34,7 @@ class Interpolation {
  *     var exp = $interpolate('Hello {{name}}!');
  *     expect(exp({name:'Angular'}).toEqual('Hello Angular!');
  */
+@NgInjectableService()
 class Interpolate {
   final Parser _parse;
 

lib/core/module.dart

@@ -11,6 +11,8 @@ import 'package:perf_api/perf_api.dart';
 import 'package:angular/core/parser/parser_library.dart';
 import 'package:angular/utils.dart';
 
+import 'service.dart';
+export 'service.dart';
 
 part "cache.dart";
 part "directive.dart";

lib/core/parser/backend.dart

@@ -24,6 +24,7 @@ class Expression implements ParserAST {
   get assignable => assign != null;
 }
 
+@NgInjectableService()
 class GetterSetter {
   static stripTrailingNulls(List l) {
     while (l.length > 0 && l.last == null) {
@@ -87,6 +88,7 @@ class GetterSetter {
 
 var undefined_ = const Symbol("UNDEFINED");
 
+@NgInjectableService()
 class ParserBackend {
   GetterSetter _getterSetter;
   FilterMap _filters;

lib/core/parser/lexer.dart

@@ -1,5 +1,6 @@
 part of angular.core.parser;
 
+@NgInjectableService()
 class Lexer {
   static const String QUOTES = "\"'";
   static const String DOT = ".";

lib/core/parser/parser.dart

@@ -133,6 +133,7 @@ Map<String, Operator> OPERATORS = {
   '?': (s, l, c, t, f) => toBool(c.eval(s, l)) ? t.eval(s, l) : f.eval(s, l),
 };
 
+@NgInjectableService()
 class DynamicParser implements Parser {
   final Lexer _lexer;
   final ParserBackend _b;

lib/core/parser/static_parser.dart

@@ -6,6 +6,7 @@ class StaticParserFunctions {
   Map<String, dynamic> functions;
 }
 
+@NgInjectableService()
 class StaticParser implements Parser {
   Map<String, dynamic> _functions;
   Parser _fallbackParser;

lib/core/registry.dart

@@ -39,6 +39,7 @@ abstract class AnnotationMap<K> {
   }
 }
 
+@NgInjectableService()
 class MetadataExtractor {
 
   Iterable call(Type type) {

lib/core/scope.dart

@@ -25,6 +25,7 @@ class ScopeEvent {
  * triggers watch A. If the system does not stabilize in TTL iteration then
  * an digest is stop an an exception is thrown.
  */
+@NgInjectableService()
 class ScopeDigestTTL {
   final num ttl;
   ScopeDigestTTL(): ttl = 5;
@@ -37,6 +38,7 @@ class ScopeDigestTTL {
  * data-binding.
  */
 @proxy
+@NgInjectableService()
 class Scope implements Map {
   final ExceptionHandler _exceptionHandler;
   final Parser _parser;

lib/core/service.dart

@@ -0,0 +1,9 @@
+library angular.core.service;
+
+/**
+ * An annotation when applied to a class indicates that the class (service) will
+ * be instantiated by di injector.
+ */
+class NgInjectableService {
+  const NgInjectableService();
+}

lib/core_dom/block_factory.dart

@@ -245,7 +245,7 @@ class BlockFactory {
  * It can be used synchronously if HTML is known or asynchronously if the
  * template HTML needs to be looked up from the URL.
  */
-
+@NgInjectableService()
 class BlockCache {
   // _blockFactoryCache is unbounded
   Cache<String, BlockFactory> _blockFactoryCache =

lib/core_dom/compiler.dart

@@ -1,5 +1,6 @@
 part of angular.core.dom;
 
+@NgInjectableService()
 class Compiler {
   final DirectiveMap directives;
   final Profiler _perf;

lib/core_dom/cookies.dart

@@ -7,6 +7,7 @@ part of angular.core.dom;
 *
 * NOTE the Cookies service is not yet implemented.
 */
+@NgInjectableService()
 class BrowserCookies {
   dom.Document _document;
 

lib/core_dom/http.dart

@@ -1,5 +1,6 @@
 part of angular.core.dom;
 
+@NgInjectableService()
 class UrlRewriter {
   String call(url) => url;
 }
@@ -13,6 +14,7 @@ class UrlRewriter {
  * During testing this implementation is swapped with [MockHttpBackend] which
  * can be trained with responses.
  */
+@NgInjectableService()
 class HttpBackend {
   /**
    * Wrapper around dart:html's [HttpRequest.request]
@@ -36,6 +38,7 @@ class HttpBackend {
   }
 }
 
+@NgInjectableService()
 class LocationWrapper {
   get location => dom.window.location;
 }
@@ -103,6 +106,7 @@ class DefaultTransformDataHttpInterceptor implements HttpInterceptor {
 /**
  * A list of [HttpInterceptor]s.
  */
+@NgInjectableService()
 class HttpInterceptors {
   List<HttpInterceptor> _interceptors = [new DefaultTransformDataHttpInterceptor()];
 
@@ -256,6 +260,7 @@ class HttpResponse {
 /**
  * Default header configuration.
  */
+@NgInjectableService()
 class HttpDefaultHeaders {
   static String _defaultContentType = 'application/json;charset=utf-8';
   Map _headers = {
@@ -311,6 +316,7 @@ class HttpDefaultHeaders {
 * The default implementation provides headers which the
 * Angular team believes to be useful.
 */
+@NgInjectableService()
 class HttpDefaults {
   /**
    * The [HttpDefaultHeaders] object used by [Http] to add default headers
@@ -397,6 +403,7 @@ class HttpDefaults {
  *
  * NOTE: < not yet documented >
  */
+@NgInjectableService()
 class Http {
   Map<String, async.Future<HttpResponse>> _pendingRequests = <String, async.Future<HttpResponse>>{};
   BrowserCookies _cookies;

lib/core_dom/tree_sanitizer.dart

@@ -1,5 +1,6 @@
 part of angular.core.dom;
 
+@NgInjectableService()
 class NullTreeSanitizer implements dom.NodeTreeSanitizer {
   void sanitizeTree(dom.Node node) {}
 }

lib/routing/module.dart

@@ -191,6 +191,7 @@ class NgRoutingModule extends Module {
  * "http://host:port/path#/foo/bar?baz=qux". Everything after hash (#) is used
  * by the router.
  */
+@NgInjectableService()
 class NgRoutingUsePushState {
   final bool usePushState;
   NgRoutingUsePushState(): usePushState = true;

lib/routing/routing.dart

@@ -28,6 +28,7 @@ abstract class RouteInitializer {
  * A singleton helper service that handles routing initialization, global
  * events and view registries.
  */
+@NgInjectableService()
 class NgRoutingHelper {
   final Router router;
   List<NgViewDirective> portals = <NgViewDirective>[];