Serialize / resynthesize 'isAsynchronous' and 'isGenerator' flags.

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 559 matching lines @@
     if (isGetter) {
       b.kind = UnlinkedExecutableKind.getter;
     } else if (isSetter) {
       b.kind = UnlinkedExecutableKind.setter;
       nameString = '$nameString=';
     } else {
       b.kind = UnlinkedExecutableKind.functionOrMethod;
     }
     b.isExternal = isExternal;
     b.isAbstract = !isExternal && body is EmptyFunctionBody;
+    b.isAsynchronous = body.isAsynchronous;
+    b.isGenerator = body.isGenerator;
     b.name = nameString;
     b.nameOffset = nameOffset;
     b.typeParameters =
         serializeTypeParameters(typeParameters, typeParameterScope);
     if (!isTopLevel) {
       b.isStatic = isDeclaredStatic;
     }
     b.returnType = serializeTypeName(returnType);
     bool isSemanticallyStatic = isTopLevel || isDeclaredStatic;
     if (formalParameters != null) {
@@ skipping 688 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;
 }