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1996-09-28
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------------------------------------------------------------------------------
-- --
-- GNAT RUNTIME COMPONENTS --
-- --
-- A D A . T E X T _ I O . W I D E _ T E X T _ I O . F L O A T _ I O --
-- --
-- B o d y --
-- --
-- $Revision: 1.2 $ --
-- --
-- Copyright (c) 1992,1993,1994,1995 NYU, All Rights Reserved --
-- --
-- The GNAT library is free software; you can redistribute it and/or modify --
-- it under terms of the GNU Library General Public License as published by --
-- the Free Software Foundation; either version 2, or (at your option) any --
-- later version. The GNAT library 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 --
-- Library General Public License for more details. You should have --
-- received a copy of the GNU Library General Public License along with --
-- the GNAT library; see the file COPYING.LIB. If not, write to the Free --
-- Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. --
-- --
------------------------------------------------------------------------------
with Ada.Text_IO.Float_Aux;
with System.WCh_Con; use System.WCh_Con;
with System.WCh_WtS; use System.WCh_WtS;
with Ada.Unchecked_Conversion;
package body Ada.Text_IO.Wide_Text_IO.Float_IO is
subtype TFT is Ada.Text_IO.File_Type;
-- File type required for calls to routines in Aux
package Aux renames Ada.Text_IO.Float_Aux;
-- We can share the normal Text_IO circuits for the non-string cases
-- since numeric values involve no wide character values, and the first
-- character of a wide character value (ESC or an upper half character)
-- always looks non-numeric for the Get case). For the Wide_String cases
-- we can share the normal Text_IO circuits by converting to String.
---------
-- Get --
---------
procedure Get
(File : in File_Type;
Item : out Num;
Width : in Field := 0)
is
begin
Aux.Get (TFT (File), Long_Long_Float (Item), Width);
exception
when Constraint_Error => raise Data_Error;
end Get;
procedure Get
(Item : out Num;
Width : in Field := 0)
is
begin
Get (Current_Input, Item, Width);
end Get;
procedure Get
(From : in Wide_String;
Item : out Num;
Last : out Positive)
is
S : constant String := Wide_String_To_String (From, WCEM_Upper);
-- String on which we do the actual conversion. Note that the method
-- used for wide character encoding is irrelevant, since if there is
-- a character outside the Standard.Character range then the call to
-- Aux.Gets will raise Data_Error in any case.
begin
Aux.Gets (S, Long_Long_Float (Item), Last);
exception
when Constraint_Error => raise Data_Error;
end Get;
---------
-- Put --
---------
procedure Put
(File : in File_Type;
Item : in Num;
Fore : in Field := Default_Fore;
Aft : in Field := Default_Aft;
Exp : in Field := Default_Exp)
is
begin
Aux.Put (TFT (File), Long_Long_Float (Item), Fore, Aft, Exp);
end Put;
procedure Put
(Item : in Num;
Fore : in Field := Default_Fore;
Aft : in Field := Default_Aft;
Exp : in Field := Default_Exp)
is
begin
Put (Current_Output, Item, Fore, Aft, Exp);
end Put;
procedure Put
(To : out Wide_String;
Item : in Num;
Aft : in Field := Default_Aft;
Exp : in Field := Default_Exp)
is
S : String (To'First .. To'Last);
begin
Aux.Puts (S, Long_Long_Float (Item), Aft, Exp);
for J in S'Range loop
To (J) := Wide_Character'Val (Character'Pos (S (J)));
end loop;
end Put;
end Ada.Text_IO.Wide_Text_IO.Float_IO;