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-------------------------------------------------------------------------------
--- --
--- GNAT RUN-TIME COMPONENTS --
--- --
--- S Y S T E M . W W D _ W C H A R --
--- --
--- B o d y --
--- --
--- Copyright (C) 1992-2009, 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 Interfaces; use Interfaces;
-
-with System.WWd_Char;
-
-package body System.Wwd_WChar is
-
- ------------------------------------
- -- Wide_Wide_Width_Wide_Character --
- ------------------------------------
-
- -- This is the case where we are talking about the Wide_Wide_Image of
- -- a Wide_Character, which is always the same character sequence as the
- -- Wide_Image of the same Wide_Character.
-
- function Wide_Wide_Width_Wide_Character
- (Lo, Hi : Wide_Character) return Natural
- is
- begin
- return Wide_Width_Wide_Character (Lo, Hi);
- end Wide_Wide_Width_Wide_Character;
-
- ------------------------------------
- -- Wide_Wide_Width_Wide_Wide_Char --
- ------------------------------------
-
- function Wide_Wide_Width_Wide_Wide_Char
- (Lo, Hi : Wide_Wide_Character) return Natural
- is
- LV : constant Unsigned_32 := Wide_Wide_Character'Pos (Lo);
- HV : constant Unsigned_32 := Wide_Wide_Character'Pos (Hi);
-
- begin
- -- Return zero if empty range
-
- if LV > HV then
- return 0;
-
- -- Return max value (12) for wide character (Hex_hhhhhhhh)
-
- elsif HV > 255 then
- return 12;
-
- -- If any characters in normal character range, then use normal
- -- Wide_Wide_Width attribute on this range to find out a starting point.
- -- Otherwise start with zero.
-
- else
- return
- System.WWd_Char.Wide_Wide_Width_Character
- (Lo => Character'Val (LV),
- Hi => Character'Val (Unsigned_32'Min (255, HV)));
- end if;
- end Wide_Wide_Width_Wide_Wide_Char;
-
- -------------------------------
- -- Wide_Width_Wide_Character --
- -------------------------------
-
- function Wide_Width_Wide_Character
- (Lo, Hi : Wide_Character) return Natural
- is
- LV : constant Unsigned_32 := Wide_Character'Pos (Lo);
- HV : constant Unsigned_32 := Wide_Character'Pos (Hi);
-
- begin
- -- Return zero if empty range
-
- if LV > HV then
- return 0;
-
- -- Return max value (12) for wide character (Hex_hhhhhhhh)
-
- elsif HV > 255 then
- return 12;
-
- -- If any characters in normal character range, then use normal
- -- Wide_Wide_Width attribute on this range to find out a starting point.
- -- Otherwise start with zero.
-
- else
- return
- System.WWd_Char.Wide_Width_Character
- (Lo => Character'Val (LV),
- Hi => Character'Val (Unsigned_32'Min (255, HV)));
- end if;
- end Wide_Width_Wide_Character;
-
- ------------------------------------
- -- Wide_Width_Wide_Wide_Character --
- ------------------------------------
-
- function Wide_Width_Wide_Wide_Character
- (Lo, Hi : Wide_Wide_Character) return Natural
- is
- begin
- return Wide_Wide_Width_Wide_Wide_Char (Lo, Hi);
- end Wide_Width_Wide_Wide_Character;
-
-end System.Wwd_WChar;