Properly skip expressions that contain the operator as.

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 "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/compiler_stats.h"
@@ skipping 8814 matching lines @@
     ConsumeToken();
     SkipUnaryExpr();
   } else {
     SkipPostfixExpr();
   }
 }
 
 
 void Parser::SkipBinaryExpr() {
   SkipUnaryExpr();
-  while (Token::Precedence(Token::kOR) <= Token::Precedence(CurrentToken()) &&
-      Token::Precedence(CurrentToken()) <= Token::Precedence(Token::kMUL)) {
+  const int min_prec = Token::Precedence(Token::kOR);
+  const int max_prec = Token::Precedence(Token::kMUL);
+  while (((min_prec <= Token::Precedence(CurrentToken())) &&
+      (Token::Precedence(CurrentToken()) <= max_prec)) ||
+      IsLiteral("as")) {
     ConsumeToken();
     SkipUnaryExpr();
   }
 }
 
 
 void Parser::SkipConditionalExpr() {
   SkipBinaryExpr();
   if (CurrentToken() == Token::kCONDITIONAL) {
     ConsumeToken();
@@ skipping 26 matching lines @@
 void Parser::SkipQualIdent() {
   ASSERT(IsIdentifier());
   ConsumeToken();
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();  // Consume the kPERIOD token.
     ExpectIdentifier("identifier expected after '.'");
   }
 }
 
 }  // namespace dart