New treatment of native methods.

lib/compiler/implementation/scanner/parser.dart

 // Copyright (c) 2012, 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.
 
 /**
  * An event generating parser of Dart programs. This parser expects
  * all tokens in a linked list (aka a token stream).
  *
  * The class [Scanner] is used to generate a token stream. See the
  * file scanner.dart.
@@ skipping 709 matching lines @@
       if (!isExpression) {
         expectSemicolon(token);
         listener.endReturnStatement(true, begin, token);
       } else {
         listener.endReturnStatement(true, begin, null);
       }
       return token;
     }
     Token begin = token;
     int statementCount = 0;
-    listener.beginFunctionBody(begin);
     if (!optional('{', token)) {
       return listener.expectedFunctionBody(token);
-    } else {
-      token = token.next;
     }
+
+    listener.beginFunctionBody(begin);
+    token = token.next;
     while (notEofOrValue('}', token)) {
       token = parseStatement(token);
       ++statementCount;
     }
     listener.endFunctionBody(statementCount, begin, token);
     expect('}', token);
     return token;
   }
 
   Token parseStatement(Token token) {
@@ skipping 926 matching lines @@
     }
     listener.handleContinueStatement(hasTarget, continueKeyword, token);
     return expectSemicolon(token);
   }
 
   Token parseEmptyStatement(Token token) {
     listener.handleEmptyStatement(token);
     return expectSemicolon(token);
   }
 }