Revert "Remove Registry from registerMetadataConstant" and "Serialize metadata"

pkg/compiler/lib/src/patch_parser.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.
 
 /**
  * This library contains the infrastructure to parse and integrate patch files.
  *
  * Three types of elements can be patched: [LibraryElement], [ClassElement],
  * [FunctionElement]. Patches are introduced in patch libraries which are loaded
  * together with the corresponding origin library. Which libraries that are
@@ skipping 110 matching lines @@
 import 'compiler.dart' show Compiler;
 import 'constants/values.dart' show ConstantValue;
 import 'dart_types.dart' show DartType;
 import 'elements/elements.dart';
 import 'elements/modelx.dart'
     show
         BaseFunctionElementX,
         ClassElementX,
         GetterElementX,
         LibraryElementX,
-        MetadataAnnotationX,
         SetterElementX;
 import 'id_generator.dart';
 import 'js_backend/js_backend.dart' show JavaScriptBackend;
 import 'library_loader.dart' show LibraryLoader;
 import 'options.dart' show ParserOptions;
 import 'parser/element_listener.dart' show ElementListener;
 import 'parser/listener.dart' show Listener, ParserError;
 import 'parser/member_listener.dart' show MemberListener;
 import 'parser/parser.dart' show Parser;
 import 'parser/partial_elements.dart' show PartialClassElement;
@@ skipping 255 matching lines @@
     }
     return null;
   }
 }
 
 /// Annotation handler for pre-resolution detection of `@Native(...)`
 /// annotations.
 class NativeAnnotationHandler implements EagerAnnotationHandler<String> {
   const NativeAnnotationHandler();
 
-  String getNativeAnnotation(MetadataAnnotationX annotation) {
+  String getNativeAnnotation(MetadataAnnotation annotation) {
     if (annotation.beginToken != null &&
         annotation.beginToken.next.value == 'Native') {
       // Skipping '@', 'Native', and '('.
       Token argument = annotation.beginToken.next.next.next;
       if (argument is StringToken) {
         return argument.value;
       }
     }
     return null;
   }
@@ skipping 19 matching lines @@
       reporter.internalError(annotation, 'Invalid @Native(...) annotation.');
     }
   }
 }
 
 /// Annotation handler for pre-resolution detection of `@JS(...)`
 /// annotations.
 class JsInteropAnnotationHandler implements EagerAnnotationHandler<bool> {
   const JsInteropAnnotationHandler();
 
-  bool hasJsNameAnnotation(MetadataAnnotationX annotation) =>
+  bool hasJsNameAnnotation(MetadataAnnotation annotation) =>
       annotation.beginToken != null && annotation.beginToken.next.value == 'JS';
 
   bool apply(
       Compiler compiler, Element element, MetadataAnnotation annotation) {
     bool hasJsInterop = hasJsNameAnnotation(annotation);
     if (hasJsInterop) {
       JavaScriptBackend backend = compiler.backend;
       backend.nativeData.markAsJsInterop(element);
     }
     // Due to semantics of apply in the baseclass we have to return null to
@@ skipping 10 matching lines @@
       compiler.reporter
           .internalError(annotation, 'Invalid @JS(...) annotation.');
     }
   }
 }
 
 /// Annotation handler for pre-resolution detection of `@patch` annotations.
 class PatchAnnotationHandler implements EagerAnnotationHandler<PatchVersion> {
   const PatchAnnotationHandler();
 
-  PatchVersion getPatchVersion(MetadataAnnotationX annotation) {
+  PatchVersion getPatchVersion(MetadataAnnotation annotation) {
     if (annotation.beginToken != null) {
       if (annotation.beginToken.next.value == 'patch') {
         return const PatchVersion(null);
       } else if (annotation.beginToken.next.value == 'patch_full') {
         return const PatchVersion('full');
       } else if (annotation.beginToken.next.value == 'patch_lazy') {
         return const PatchVersion('lazy');
       } else if (annotation.beginToken.next.value == 'patch_startup') {
         return const PatchVersion('startup');
       }
@@ skipping 127 matching lines @@
 
 class PatchVersion {
   final String tag;
 
   const PatchVersion(this.tag);
 
   bool isActive(String patchTag) => tag == null || tag == patchTag;
 
   String toString() => 'PatchVersion($tag)';
 }