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------------------------------------------------------------------------------

--                                                                          --

--                         GNAT RUN-TIME COMPONENTS                         --

--                                                                          --

--           A D A . T E X T _ I O . E N U M E R A T I O N _ I O            --

--                                                                          --

--                                 B o d y                                  --

--                                                                          --

--          Copyright (C) 1992-2011, Free Software Foundation, Inc.         --

--                                                                          --

-- GNAT is free software;  you can  redistribute it  and/or modify it under --

-- terms of the  GNU General Public License as published  by the Free Soft- --

-- ware  Foundation;  either version 3,  or (at your option) any later ver- --

-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --

-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --

-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --

--                                                                          --

-- As a special exception under Section 7 of GPL version 3, you are granted --

-- additional permissions described in the GCC Runtime Library Exception,   --

-- version 3.1, as published by the Free Software Foundation.               --

--                                                                          --

-- You should have received a copy of the GNU General Public License and    --

-- a copy of the GCC Runtime Library Exception along with this program;     --

-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --

-- <http://www.gnu.org/licenses/>.                                          --

--                                                                          --

-- GNAT was originally developed  by the GNAT team at  New York University. --

-- Extensive contributions were provided by Ada Core Technologies Inc.      --

--                                                                          --

------------------------------------------------------------------------------

with Ada.Text_IO.Enumeration_Aux;

package body Ada.Text_IO.Enumeration_IO is

   package Aux renames Ada.Text_IO.Enumeration_Aux;

   ---------

   -- Get --

   ---------

   procedure Get (File : File_Type; Item : out Enum) is

      Buf    : String (1 .. Enum'Width + 1);

      Buflen : Natural;

   begin

      Aux.Get_Enum_Lit (File, Buf, Buflen);

      declare

         Buf_Str : String renames Buf (1 .. Buflen);

         pragma Unsuppress (Range_Check);

      begin

         Item := Enum'Value (Buf_Str);

      end;

   exception

      when Constraint_Error => raise Data_Error;

   end Get;

   procedure Get (Item : out Enum) is

      pragma Unsuppress (Range_Check);

   begin

      Get (Current_In, Item);

   end Get;

   procedure Get

     (From : String;

      Item : out Enum;

      Last : out Positive)

   is

      Start : Natural;

   begin

      Aux.Scan_Enum_Lit (From, Start, Last);

      declare

         From_Str : String renames From (Start .. Last);

         pragma Unsuppress (Range_Check);

      begin

         Item := Enum'Value (From_Str);

      end;

   exception

      when Constraint_Error => raise Data_Error;

   end Get;

   ---------

   -- Put --

   ---------

   procedure Put

     (File  : File_Type;

      Item  : Enum;

      Width : Field := Default_Width;

      Set   : Type_Set := Default_Setting)

   is

   begin

      --  Ensure that Item is valid before attempting to retrieve the Image, to

      --  prevent the possibility of out-of-bounds addressing of index or image

      --  tables. Units in  the run-time library are normally compiled with

      --  checks suppressed, which includes instantiated generics.

      if not Item'Valid then

         raise Constraint_Error with "invalid enumeration value";

      end if;

      Aux.Put (File, Enum'Image (Item), Width, Set);

   end Put;

   procedure Put

     (Item  : Enum;

      Width : Field := Default_Width;

      Set   : Type_Set := Default_Setting)

   is

   begin

      Put (Current_Out, Item, Width, Set);

   end Put;

   procedure Put

     (To   : out String;

      Item : Enum;

      Set  : Type_Set := Default_Setting)

   is

   begin

      --  Ensure that Item is valid before attempting to retrieve the Image, to

      --  prevent the possibility of out-of-bounds addressing of index or image

      --  tables. Units in the run-time library are normally compiled with

      --  checks suppressed, which includes instantiated generics.

      if not Item'Valid then

         raise Constraint_Error with "invalid enumeration value";

      end if;

      Aux.Puts (To, Enum'Image (Item), Set);

   end Put;

end Ada.Text_IO.Enumeration_IO;