Handle Native("...") annotations in KernelBehaviorBuilder.

pkg/compiler/lib/src/compiler.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.
 
 library dart2js.compiler_base;
 
 import 'dart:async' show EventSink, Future;
 
 import '../compiler_new.dart' as api;
 import 'closure.dart' as closureMapping show ClosureTask;
@@ skipping 1093 matching lines @@
   final Resolution resolution;
   final DiagnosticReporter reporter;
 
   final ElementEnvironment environment;
 
   LibraryElement coreLibrary;
   LibraryElement asyncLibrary;
   LibraryElement mirrorsLibrary;
   LibraryElement typedDataLibrary;
 
-  // TODO(sigmund): possibly move this to target-specific collection of
-  // elements, or refactor the library so that the helpers we need are in a
-  // target-agnostic place.  Currently we are using @patch and @Native from
-  // here. We hope we can make those independent of the backend and generic
-  // enough so the patching algorithm can work without being configured for a
-  // specific backend.
-  LibraryElement jsHelperLibrary;
-
   _CompilerCommonElements(this.environment, this.resolution, this.reporter);
 
-  // From dart:_js_helper
-  // TODO(sigmund,johnniwinther): refactor needed: either these move to a
-  // backend-specific collection of helpers, or the helper code moves to a
-  // backend agnostic library (see commend above on [jsHelperLibrary].
-
-  ClassElement _patchAnnotationClass;
-  ClassElement get patchAnnotationClass =>
-      _patchAnnotationClass ??= _findLibraryMember(jsHelperLibrary, '_Patch');
-
-  ClassElement _nativeAnnotationClass;
-  ClassElement get nativeAnnotationClass =>
-      _nativeAnnotationClass ??= _findLibraryMember(jsHelperLibrary, 'Native');
-
   @override
   ResolutionDynamicType get dynamicType => const ResolutionDynamicType();
 
   void onLibraryCreated(LibraryElement library) {
     Uri uri = library.canonicalUri;
     if (uri == Uris.dart_core) {
       coreLibrary = library;
     } else if (uri == Uris.dart_async) {
       asyncLibrary = library;
     } else if (uri == Uris.dart__native_typed_data) {
       typedDataLibrary = library;
     } else if (uri == Uris.dart_mirrors) {
       mirrorsLibrary = library;
-    } else if (uri == js_backend.BackendHelpers.DART_JS_HELPER) {
-      jsHelperLibrary = library;
     }
   }
 
   @override
   MemberElement findLibraryMember(LibraryElement library, String name,
       {bool setter: false, bool required: true}) {
     Element member = _findLibraryMember(library, name, required: required);
     if (member != null && member.isAbstractField) {
       AbstractFieldElement abstractField = member;
       if (setter) {
@@ skipping 928 matching lines @@
     if (library != null && library.isSynthesized) {
       return null;
     }
     if (library == null && required) {
       throw new SpannableAssertionFailure(
           library, "The library '${uri}' was not found.");
     }
     return library;
   }
 }