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

--                                                                          --

--                         GNAT RUN-TIME COMPONENTS                         --

--                                                                          --

--              A D A . C H A R A C T E R S . H A N D L I N G               --

--                                                                          --

--                                 S p e c                                  --

--                                                                          --

--          Copyright (C) 1992-2010, Free Software Foundation, Inc.         --

--                                                                          --

-- This specification is derived from the Ada Reference Manual for use with --

-- GNAT. The copyright notice above, and the license provisions that follow --

-- apply solely to the  contents of the part following the private keyword. --

--                                                                          --

-- 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.      --

--                                                                          --

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

package Ada.Characters.Handling is

   pragma Preelaborate;

   pragma Pure_05;

   --  In accordance with Ada 2005 AI-362

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

   -- Character Classification Functions --

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

   function Is_Control           (Item : Character) return Boolean;

   function Is_Graphic           (Item : Character) return Boolean;

   function Is_Letter            (Item : Character) return Boolean;

   function Is_Lower             (Item : Character) return Boolean;

   function Is_Upper             (Item : Character) return Boolean;

   function Is_Basic             (Item : Character) return Boolean;

   function Is_Digit             (Item : Character) return Boolean;

   function Is_Decimal_Digit     (Item : Character) return Boolean

     renames Is_Digit;

   function Is_Hexadecimal_Digit (Item : Character) return Boolean;

   function Is_Alphanumeric      (Item : Character) return Boolean;

   function Is_Special           (Item : Character) return Boolean;

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

   -- Conversion Functions for Character and String --

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

   function To_Lower (Item : Character) return Character;

   function To_Upper (Item : Character) return Character;

   function To_Basic (Item : Character) return Character;

   function To_Lower (Item : String) return String;

   function To_Upper (Item : String) return String;

   function To_Basic (Item : String) return String;

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

   -- Classifications of and Conversions Between Character and ISO 646 --

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

   subtype ISO_646 is

     Character range Character'Val (0) .. Character'Val (127);

   function Is_ISO_646 (Item : Character) return Boolean;

   function Is_ISO_646 (Item : String)    return Boolean;

   function To_ISO_646

     (Item       : Character;

      Substitute : ISO_646 := ' ') return ISO_646;

   function To_ISO_646

     (Item       : String;

      Substitute : ISO_646 := ' ') return String;

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

   -- Classifications of Wide_Character and Characters --

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

   --  Ada 2005 AI 395: these functions are moved to Ada.Characters.Conversions

   --  and are considered obsolete in Ada.Characters.Handling. However we do

   --  not complain about this obsolescence, since in practice it is necessary

   --  to use these routines when creating code that is intended to run in

   --  either Ada 95 or Ada 2005 mode.

   --  We do however have to flag these if the pragma No_Obsolescent_Features

   --  restriction is active (see Restrict.Check_Obsolescent_2005_Entity).

   function Is_Character (Item : Wide_Character) return Boolean;

   function Is_String    (Item : Wide_String)    return Boolean;

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

   -- Conversions between Wide_Character and Character --

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

   --  Ada 2005 AI 395: these functions are moved to Ada.Characters.Conversions

   --  and are considered obsolete in Ada.Characters.Handling. However we do

   --  not complain about this obsolescence, since in practice it is necessary

   --  to use these routines when creating code that is intended to run in

   --  either Ada 95 or Ada 2005 mode.

   --  We do however have to flag these if the pragma No_Obsolescent_Features

   --  restriction is active (see Restrict.Check_Obsolescent_2005_Entity).

   function To_Character

     (Item       : Wide_Character;

      Substitute : Character := ' ') return Character;

   function To_String

     (Item       : Wide_String;

      Substitute : Character := ' ') return String;

   function To_Wide_Character

     (Item : Character) return Wide_Character;

   function To_Wide_String

     (Item : String) return Wide_String;

private

   pragma Inline (Is_Control);

   pragma Inline (Is_Graphic);

   pragma Inline (Is_Letter);

   pragma Inline (Is_Lower);

   pragma Inline (Is_Upper);

   pragma Inline (Is_Basic);

   pragma Inline (Is_Digit);

   pragma Inline (Is_Hexadecimal_Digit);

   pragma Inline (Is_Alphanumeric);

   pragma Inline (Is_Special);

   pragma Inline (To_Lower);

   pragma Inline (To_Upper);

   pragma Inline (To_Basic);

   pragma Inline (Is_ISO_646);

   pragma Inline (Is_Character);

   pragma Inline (To_Character);

   pragma Inline (To_Wide_Character);

end Ada.Characters.Handling;