Ignore synthetic tokens when search for AstNode.

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:math" as math;
@@ skipping 6563 matching lines @@
       return _parseEmptyStatement();
     } else if (_isInitializedVariableDeclaration()) {
       return _parseVariableDeclarationStatementAfterMetadata(
           commentAndMetadata);
     } else if (_isFunctionDeclaration()) {
       return _parseFunctionDeclarationStatement();
     } else if (_matches(TokenType.CLOSE_CURLY_BRACKET)) {
       _reportErrorForCurrentToken(ParserErrorCode.MISSING_STATEMENT);
       return new EmptyStatement(_createSyntheticToken(TokenType.SEMICOLON));
     } else {
-      return new ExpressionStatement(
-          parseExpression2(), _expect(TokenType.SEMICOLON));
+      return new ExpressionStatement(parseExpression2(), _expectSemicolon());
     }
   }
 
   /**
    * Parse an operator declaration. The [commentAndMetadata] is the
    * documentation comment and metadata to be associated with the declaration.
    * The [externalKeyword] is the 'external' token. The [returnType] is the
    * return type that has already been parsed, or `null` if there was no return
    * type. Return the operator declaration that was parsed.
    *
@@ skipping 3991 matching lines @@
   }
 
   /**
    * Copy resolution data from the [fromNode] to the [toNode].
    */
   static void copyResolutionData(AstNode fromNode, AstNode toNode) {
     ResolutionCopier copier = new ResolutionCopier();
     copier._isEqualNodes(fromNode, toNode);
   }
 }