Split NativeData

pkg/compiler/lib/src/js_backend/impact_transformer.dart

 // Copyright (c) 2017, 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 js_backend.backend.impact_transformer;
 
 import '../common.dart';
 import '../common/backend_api.dart' show ImpactTransformer;
 import '../common/codegen.dart' show CodegenImpact;
 import '../common/resolution.dart' show ResolutionImpact;
@@ skipping 286 matching lines @@
       if (type.isTypeVariable) {
         registerImpact(impacts.typeVariableTypeCheck);
         if (inCheckedMode) {
           registerImpact(impacts.typeVariableCheckedModeTypeCheck);
         }
       }
     }
     if (type is ResolutionFunctionType) {
       registerImpact(impacts.functionTypeCheck);
     }
-    if (type.element != null && backend.isNative(type.element)) {
+    if (type is ResolutionInterfaceType &&
+        backend.nativeData.isNativeClass(type.element)) {
       registerImpact(impacts.nativeTypeCheck);
     }
   }
 
   void onIsCheckForCodegen(
       ResolutionDartType type, TransformedWorldImpact transformed) {
     if (type.isDynamic) return;
     type = type.unaliased;
     impacts.typeCheck.registerImpact(transformed, elementEnvironment);
 
@@ skipping 15 matching lines @@
       helper = backend.checkedModeHelpers
           .getNativeCheckedModeHelper(type, typeCast: false);
       if (helper != null) {
         StaticUse staticUse = helper.getStaticUse(backend.helpers);
         transformed.registerStaticUse(staticUse);
       }
     }
     if (!type.treatAsRaw || type.containsTypeVariables) {
       impacts.genericIsCheck.registerImpact(transformed, elementEnvironment);
     }
-    if (type.element != null && backend.isNative(type.element)) {
+    if (type is ResolutionInterfaceType &&
+        backend.nativeData.isNativeClass(type.element)) {
       // We will neeed to add the "$is" and "$as" properties on the
       // JavaScript object prototype, so we make sure
       // [:defineProperty:] is compiled.
       impacts.nativeTypeCheck.registerImpact(transformed, elementEnvironment);
     }
   }
 
   @override
   WorldImpact transformCodegenImpact(CodegenImpact impact) {
     TransformedWorldImpact transformed = new TransformedWorldImpact(impact);
@@ skipping 70 matching lines @@
         case AsyncMarker.ASYNC_STAR:
           impacts.asyncStarBody.registerImpact(transformed, elementEnvironment);
           break;
       }
     }
 
     // TODO(johnniwinther): Remove eager registration.
     return transformed;
   }
 }