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--
--  Copyright (C) 2003, 2009 Stephen Leake
--
--  This file is part of the OpenToken package.
--
--  The OpenToken package is free software; you can redistribute it
--  and/or modify it under the terms of the GNU General Public License
--  as published by the Free Software Foundation; either version 3, or
--  (at your option) any later version. The OpenToken package is
--  distributed in the hope that it will be useful, but WITHOUT ANY
--  WARRANTY; without even the implied warranty of MERCHANTABILITY or
--  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
--  License for more details. You should have received a copy of the
--  GNU General Public License distributed with the OpenToken package;
--  see file GPL.txt. If not, write to the Free Software Foundation,
--  59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
--
--  As a special exception, if other files instantiate generics from
--  this unit, or you link this unit with other files to produce an
--  executable, this unit does not by itself cause the resulting
--  executable to be covered by the GNU General Public License. This
--  exception does not however invalidate any other reasons why the
--  executable file might be covered by the GNU Public License.
--

-------------------------------------------------------------------------------
--  This package declares a type for designating a string. Useful as
--  a literal in LR parsers, or an integer value in recursive descent
--  parsers.
-------------------------------------------------------------------------------
generic
package OpenToken.Token.Enumerated.String is

   type Instance is new OpenToken.Token.Enumerated.Instance with record
      Value : Buffers.Bounded_String;
   end record;

   subtype Class is Instance'Class;

   type Handle is access all Class;

   ----------------------------------------------------------------------------
   --  Get a string token.
   ----------------------------------------------------------------------------
   function Get
     (ID    : in Token_ID;
      Value : in Standard.String := "";
      Name  : in Standard.String := "";
      Build : in Action          := null)
     return Instance'Class;

   ----------------------------------------------------------------------
   --  Strips quotes from Lexeme
   ----------------------------------------------------------------------
   overriding procedure Create
     (Lexeme     : in     Standard.String;
      Recognizer : in     Recognizer_Handle;
      New_Token  : in out Instance);

   overriding procedure Copy
     (To   : in out Instance;
      From : in     Token.Class);

   function To_String (Value : in Buffers.Bounded_String) return Standard.String
     renames Buffers.To_String;

   function To_Bounded_String
     (Value : in Standard.String;
      Drop  : in Ada.Strings.Truncation := Ada.Strings.Error)
     return Buffers.Bounded_String
     renames Buffers.To_Bounded_String;

end OpenToken.Token.Enumerated.String;