------------------------------------------------------------------------------
--                                                                          --
--                         GNAT RUNTIME COMPONENTS                          --
--                                                                          --
--               A D A . S T R I N G S . W I D E _ F I X E D                --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--                            $Revision: 1.5 $                              --
--                                                                          --
--           Copyright (c) 1992,1993,1994 NYU, All Rights Reserved          --
--                                                                          --
-- 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 2,  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.  See the GNU General Public License --
-- for  more details.  You should have  received  a copy of the GNU General --
-- Public License  distributed with GNAT;  see file COPYING.  If not, write --
-- to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. --
--                                                                          --
------------------------------------------------------------------------------


with Ada.Strings.Wide_Maps;
with Ada.Strings.Wide_Search;

package Ada.Strings.Wide_Fixed is

   Blank : constant Wide_Character := ' ';
   Pad   : constant Wide_Character := ' ';

   -------------------------------------------------------------------
   -- Copy Procedure for Wide_Strings of Possibly Different Lengths --
   -------------------------------------------------------------------

   procedure Move
     (Source  : in  Wide_String;
      Target  : out Wide_String;
      Drop    : in  Truncation := Error;
      Justify : in  Alignment  := Left;
      Pad     : in  Wide_Character  := Wide_Fixed.Pad);

   ------------------------
   -- Search Subprograms --
   ------------------------

   --  Note: in this implementation, these search subprograms are in a
   --  separate package Ada.Strings.Wide_Search. The declarations are
   --  thus replaced by renamings of these routines (which is perfectly valid
   --  since it is semantically undetectable that we have renamings here
   --  rather than "real" subprogram declarations).

   function Index
     (Source  : in Wide_String;
      Pattern : in Wide_String;
      Going   : in Direction := Forward;
      Mapping : in Wide_Maps.Wide_Character_Mapping := Wide_Maps.Identity)
      return    Natural
   renames Ada.Strings.Wide_Search.Index;

   function Index
     (Source  : in Wide_String;
      Pattern : in Wide_String;
      Going   : in Direction := Forward;
      Mapping : in Wide_Maps.Wide_Character_Mapping_Function)
      return    Natural
   renames Ada.Strings.Wide_Search.Index;

   function Index
     (Source : in Wide_String;
      Set    : in Wide_Maps.Wide_Character_Set;
      Test   : in Membership := Inside;
      Going  : in Direction  := Forward)
      return   Natural
   renames Ada.Strings.Wide_Search.Index;

   function Index_Non_Blank
     (Source : in Wide_String;
      Going  : in Direction := Forward)
      return   Natural
   renames Ada.Strings.Wide_Search.Index_Non_Blank;

   function Count
     (Source  : in Wide_String;
      Pattern : in Wide_String;
      Mapping : in Wide_Maps.Wide_Character_Mapping := Wide_Maps.Identity)
      return    Natural
   renames Ada.Strings.Wide_Search.Count;

   function Count
     (Source   : in Wide_String;
      Pattern  : in Wide_String;
      Mapping  : in Wide_Maps.Wide_Character_Mapping_Function)
      return     Natural
   renames Ada.Strings.Wide_Search.Count;

   function Count
     (Source : in Wide_String;
      Set    : in Wide_Maps.Wide_Character_Set)
      return   Natural
   renames Ada.Strings.Wide_Search.Count;

   procedure Find_Token
     (Source : in Wide_String;
      Set    : in Wide_Maps.Wide_Character_Set;
      Test   : in Membership;
      First  : out Positive;
      Last   : out Natural)
   renames Ada.Strings.Wide_Search.Find_Token;

   -----------------------------------------
   -- Wide_String Translation Subprograms --
   -----------------------------------------

   function Translate
     (Source  : in Wide_String;
      Mapping : in Wide_Maps.Wide_Character_Mapping)
      return    Wide_String;

   procedure Translate
     (Source  : in out Wide_String;
      Mapping : in Wide_Maps.Wide_Character_Mapping);

   function Translate
     (Source  : in Wide_String;
      Mapping : in Wide_Maps.Wide_Character_Mapping_Function)
      return    Wide_String;

   procedure Translate
     (Source  : in out Wide_String;
      Mapping : in Wide_Maps.Wide_Character_Mapping_Function);

   --------------------------------------------
   -- Wide_String Transformation Subprograms --
   --------------------------------------------

   function Replace_Slice
     (Source : in Wide_String;
      Low    : in Positive;
      High   : in Natural;
      By     : in Wide_String)
      return   Wide_String;

   procedure Replace_Slice
     (Source  : in out Wide_String;
      Low     : in Positive;
      High    : in Natural;
      By      : in Wide_String;
      Drop    : in Truncation := Error;
      Justify : in Alignment  := Left;
      Pad     : in Wide_Character  := Wide_Fixed.Pad);

   function Insert
     (Source   : in Wide_String;
      Before   : in Positive;
      New_Item : in Wide_String)
      return     Wide_String;

   procedure Insert
     (Source   : in out Wide_String;
      Before   : in Positive;
      New_Item : in Wide_String;
      Drop     : in Truncation := Error);

   function Overwrite
     (Source   : in Wide_String;
      Position : in Positive;
      New_Item : in Wide_String)
      return     Wide_String;

   procedure Overwrite
     (Source   : in out Wide_String;
      Position : in Positive;
      New_Item : in Wide_String;
      Drop     : in Truncation := Right);

   function Delete
     (Source  : in Wide_String;
      From    : in Positive;
      Through : in Natural)
      return    Wide_String;

   procedure Delete
     (Source  : in out Wide_String;
      From    : in Positive;
      Through : in Natural;
      Justify : in Alignment := Left;
      Pad     : in Wide_Character := Wide_Fixed.Pad);

   --------------------------------------
   -- Wide_String Selector Subprograms --
   --------------------------------------

   function Trim
     (Source : in Wide_String)
      return   Wide_String;

   function Trim
     (Source : in Wide_String;
      Left   : in Wide_Maps.Wide_Character_Set;
      Right  : in Wide_Maps.Wide_Character_Set)
      return   Wide_String;

   procedure Trim
     (Source  : in out Wide_String;
      Left    : in Wide_Maps.Wide_Character_Set;
      Right   : in Wide_Maps.Wide_Character_Set;
      Justify : in Alignment := Ada.Strings.Left;
      Pad     : in Wide_Character := Wide_Fixed.Pad);

   function Head
     (Source : in Wide_String;
      Count  : in Natural;
      Pad    : in Wide_Character := Wide_Fixed.Pad)
      return   Wide_String;

   function Tail
     (Source : in Wide_String;
      Count  : in Natural;
      Pad    : in Wide_Character := Wide_Fixed.Pad)
      return   Wide_String;

   ---------------------------------------
   -- Wide_String Constructor Functions --
   ---------------------------------------

   function "*"
     (Left  : in Natural;
      Right : in Wide_Character)
      return  Wide_String;

   function "*"
     (Left  : in Natural;
      Right : in Wide_String)
      return Wide_String;

end Ada.Strings.Wide_Fixed;
