New analyzer snapshot.

pkg/analyzer/lib/src/generated/parser.dart

 // Copyright (c) 2014, 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 code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.parser;
 
 import 'dart:collection';
@@ skipping 3207 matching lines @@
    */
   bool _isFunctionExpression(Token startToken) {
     // Function expressions aren't allowed in initializer lists.
     if (_inInitializer) {
       return false;
     }
     Token afterParameters = _skipFormalParameterList(startToken);
     if (afterParameters == null) {
       return false;
     }
-    return afterParameters.matchesAny([TokenType.OPEN_CURLY_BRACKET, TokenType.FUNCTION]);
+    if (afterParameters.matchesAny([TokenType.OPEN_CURLY_BRACKET, TokenType.FUNCTION])) {
+      return true;
+    }
+    if (_parseAsync) {
+      String lexeme = afterParameters.lexeme;
+      return lexeme == ASYNC || lexeme == SYNC;
+    }
+    return false;
   }
 
   /**
    * Return `true` if the given character is a valid hexadecimal digit.
    *
    * @param character the character being tested
    * @return `true` if the character is a valid hexadecimal digit
    */
   bool _isHexDigit(int character) => (0x30 <= character && character <= 0x39) || (0x41 <= character && character <= 0x46) || (0x61 <= character && character <= 0x66);
 
@@ skipping 6228 matching lines @@
         return trampoline(target, arguments[0], arguments[1]);
       case 3:
         return trampoline(target, arguments[0], arguments[1], arguments[2]);
       case 4:
         return trampoline(target, arguments[0], arguments[1], arguments[2], arguments[3]);
       default:
         throw new IllegalArgumentException("Not implemented for > 4 arguments");
     }
   }
 }