Properly handle cascades in top-level functions

runtime/vm/parser.cc

 // 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.
 
 #include "vm/parser.h"
 
 #include "lib/invocation_mirror.h"
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
@@ skipping 9873 matching lines @@
         UnexpectedToken();
         UNREACHABLE();
       }
       break;
   }
 }
 
 
 void Parser::SkipSelectors() {
   while (true) {
-    if ((CurrentToken() == Token::kPERIOD) ||
-        (CurrentToken() == Token::kCASCADE)) {
+    if (CurrentToken() == Token::kCASCADE) {
+      ConsumeToken();
+      if (CurrentToken() == Token::kLBRACK) {
+        continue;  // Consume [ in next loop iteration.
+      } else {
+        ExpectIdentifier("identifier or [ expected after ..");
+      }
+    } else if (CurrentToken() == Token::kPERIOD) {
       ConsumeToken();
       ExpectIdentifier("identifier expected");
     } else if (CurrentToken() == Token::kLBRACK) {
       ConsumeToken();
       SkipNestedExpr();
       ExpectToken(Token::kRBRACK);
     } else if (CurrentToken() == Token::kLPAREN) {
       SkipActualParameters();
     } else {
       break;
@@ skipping 80 matching lines @@
 void Parser::SkipQualIdent() {
   ASSERT(IsIdentifier());
   ConsumeToken();
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();  // Consume the kPERIOD token.
     ExpectIdentifier("identifier expected after '.'");
   }
 }
 
 }  // namespace dart