Implement handling of arrow functions in the parser

src/parser.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 569 matching lines @@
   ZoneList<ObjectLiteral::Property*>* NewPropertyList(int size, Zone* zone) {
     return new(zone) ZoneList<ObjectLiteral::Property*>(size, zone);
   }
 
   // Temporary glue; these functions will move to ParserBase.
   Expression* ParseV8Intrinsic(bool* ok);
   FunctionLiteral* ParseFunctionLiteral(
       Handle<String> name,
       Scanner::Location function_name_location,
       bool name_is_strict_reserved,
-      bool is_generator,
+      FunctionParsingMode parsing_mode,
+      Expression* params_ast,
       int function_token_position,
       FunctionLiteral::FunctionType type,
       bool* ok);
 
  private:
   Parser* parser_;
 };
 
 
 class Parser : public ParserBase<ParserTraits> {
@@ skipping 124 matching lines @@
 
   // Support for hamony block scoped bindings.
   Block* ParseScopedBlock(ZoneStringList* labels, bool* ok);
 
   // Initialize the components of a for-in / for-of statement.
   void InitializeForEachStatement(ForEachStatement* stmt,
                                   Expression* each,
                                   Expression* subject,
                                   Statement* body);
 
+  Vector<VariableProxy*> ParameterListFromExpression(Expression* expression,
+                                                     bool* ok);
+
   FunctionLiteral* ParseFunctionLiteral(
       Handle<String> name,
       Scanner::Location function_name_location,
       bool name_is_strict_reserved,
-      bool is_generator,
+      FunctionParsingMode parsing_mode,
+      Expression* params_ast,
       int function_token_position,
       FunctionLiteral::FunctionType type,
       bool* ok);
 
   // Magical syntax support.
   Expression* ParseV8Intrinsic(bool* ok);
 
   bool CheckInOrOf(bool accept_OF, ForEachStatement::VisitMode* visit_mode);
 
   // Get odd-ball literals.
@@ skipping 89 matching lines @@
  private:
   static const int kLiteralTypeSlot = 0;
   static const int kElementsSlot = 1;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(CompileTimeValue);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_PARSER_H_