More cleanup to avoid creation of redundant handles

runtime/vm/parser.h

 // 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.
 
 #ifndef VM_PARSER_H_
 #define VM_PARSER_H_
 
 #include "include/dart_api.h"
 
 #include "lib/invocation_mirror.h"
 #include "vm/ast.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler_stats.h"
 #include "vm/scanner.h"
 
 namespace dart {
 
 // Forward declarations.
 class Function;
+class LiteralToken;
 class Script;
 class TokenStream;
 
 struct TopLevel;
 class ClassDesc;
 struct MemberDesc;
 struct ParamList;
 struct QualIdent;
 struct CatchParamDesc;
 struct FieldInitExpression;
@@ skipping 608 matching lines @@
   // constructor initializer expressions to handle ambiguous grammar.
   bool SetAllowFunctionLiterals(bool value);
   bool allow_function_literals_;
 
   // The function currently being compiled.
   ParsedFunction* parsed_function_;
 
   // The function currently being parsed.
   Function& innermost_function_;
 
+  // Current literal token.
+  LiteralToken& literal_token_;
+
   // The class currently being parsed, or the owner class of the
   // function currently being parsed. It is used for primary identifier lookups.
   Class& current_class_;
 
   // The current library (and thus class dictionary) used to resolve names.
   // When parsing a function, this is the library in which the function
   // is defined. This can be the library in which the current_class_ is
   // defined, or the library of a mixin class where the function originates.
   Library& library_;
 
   // List of try blocks seen so far, this is used to generate inlined finally
   // code at all points in the try block where an exit from the block is
   // done using 'return', 'break' or 'continue' statements.
   TryBlocks* try_blocks_list_;
 
   DISALLOW_COPY_AND_ASSIGN(Parser);
 };
 
 }  // namespace dart
 
 #endif  // VM_PARSER_H_