Invoke native methods directly

pkg/analyzer/lib/src/summary/summarize_ast.dart

 // Copyright (c) 2016, 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 serialization.summarize_ast;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/type.dart' show DartType;
@@ skipping 1090 matching lines @@
         if (initializer is RedirectingConstructorInvocation) {
           b.isRedirectedConstructor = true;
           b.redirectedConstructorName = initializer.constructorName?.name;
         }
       }
     }
     if (node.constKeyword != null) {
       b.isConst = true;
       b.constCycleSlot = assignSlot();
     }
-    b.isExternal = node.externalKeyword != null;
+    b.isExternal = node.externalKeyword != null || node.body is NativeFunctionBody;
     b.documentationComment = serializeDocumentation(node.documentationComment);
     b.annotations = serializeAnnotations(node.metadata);
     b.codeRange = serializeCodeRange(node);
     Map<int, int> localClosureIndexMap = serializeFunctionBody(
         b, node.initializers, node.body, node.constKeyword != null, false);
     if (node.constKeyword != null) {
       Set<String> constructorParameterNames =
           node.parameters.parameters.map((p) => p.identifier.name).toSet();
       b.constantInitializers = node.initializers
           .map((ConstructorInitializer initializer) =>
@@ skipping 101 matching lines @@
         node.isGetter,
         node.isSetter,
         node.returnType,
         node.functionExpression.parameters,
         node.functionExpression.body,
         true,
         false,
         node.documentationComment,
         node.metadata,
         node.functionExpression.typeParameters,
-        node.externalKeyword != null,
+        node.externalKeyword != null || node.functionExpression.body is NativeFunctionBody,
         false,
         node.parent is FunctionDeclarationStatement));
   }
 
   @override
   void visitFunctionExpression(FunctionExpression node) {
     if (node.parent is! FunctionDeclaration) {
       if (_localClosureIndexMap != null) {
         _localClosureIndexMap[node.offset] = executables.length;
       }
@@ skipping 106 matching lines @@
         node.isGetter,
         node.isSetter,
         node.returnType,
         node.parameters,
         node.body,
         false,
         node.isStatic,
         node.documentationComment,
         node.metadata,
         node.typeParameters,
-        node.externalKeyword != null,
+        node.externalKeyword != null || node.body is NativeFunctionBody,
         false,
         false));
   }
 
   @override
   void visitPartDirective(PartDirective node) {
     parts.add(new UnlinkedPartBuilder(
         uriOffset: node.uri.offset,
         uriEnd: node.uri.end,
         annotations: serializeAnnotations(node.metadata)));
@@ skipping 50 matching lines @@
 /**
  * A [_TypeParameterScope] is a [_Scope] which defines [_ScopedTypeParameter]s.
  */
 class _TypeParameterScope extends _Scope {
   /**
    * Get the number of [_ScopedTypeParameter]s defined in this
    * [_TypeParameterScope].
    */
   int get length => _definedNames.length;
 }