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190 | ------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- A D A . W I D E _ T E X T _ I O . D E C I M A L _ I O --
-- --
-- B o d y --
-- --
-- Copyright (C) 2020, 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.Wide_Text_IO.Decimal_Aux;
with System.Img_Decimal_32; use System.Img_Decimal_32;
with System.Img_Decimal_64; use System.Img_Decimal_64;
with System.Img_Decimal_128; use System.Img_Decimal_128;
with System.Val_Decimal_32; use System.Val_Decimal_32;
with System.Val_Decimal_64; use System.Val_Decimal_64;
with System.Val_Decimal_128; use System.Val_Decimal_128;
with System.WCh_Con; use System.WCh_Con;
with System.WCh_WtS; use System.WCh_WtS;
package body Ada.Wide_Text_IO.Decimal_IO is
subtype Int32 is Interfaces.Integer_32;
subtype Int64 is Interfaces.Integer_64;
subtype Int128 is Interfaces.Integer_128;
package Aux32 is new
Ada.Wide_Text_IO.Decimal_Aux
(Int32,
Scan_Decimal32,
Set_Image_Decimal32);
package Aux64 is new
Ada.Wide_Text_IO.Decimal_Aux
(Int64,
Scan_Decimal64,
Set_Image_Decimal64);
package Aux128 is new
Ada.Wide_Text_IO.Decimal_Aux
(Int128,
Scan_Decimal128,
Set_Image_Decimal128);
Need64 : constant Boolean := Num'Size > 32;
Need128 : constant Boolean := Num'Size > 64;
-- Throughout this generic body, we distinguish between the case where type
-- Int32 is acceptable, where type Int64 is acceptable and where an Int128
-- is needed. These boolean constants are used to test for these cases and
-- since it is a constant, only code for the relevant case will be included
-- in the instance.
Scale : constant Integer := Num'Scale;
---------
-- Get --
---------
procedure Get
(File : File_Type;
Item : out Num;
Width : Field := 0)
is
pragma Unsuppress (Range_Check);
begin
if Need128 then
Item := Num'Fixed_Value (Aux128.Get (File, Width, Scale));
elsif Need64 then
Item := Num'Fixed_Value (Aux64.Get (File, Width, Scale));
else
Item := Num'Fixed_Value (Aux32.Get (File, Width, Scale));
end if;
exception
when Constraint_Error => raise Data_Error;
end Get;
procedure Get
(Item : out Num;
Width : Field := 0)
is
begin
Get (Current_In, Item, Width);
end Get;
procedure Get
(From : Wide_String;
Item : out Num;
Last : out Positive)
is
pragma Unsuppress (Range_Check);
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
if Need128 then
Item := Num'Fixed_Value (Aux128.Gets (S, Last, Scale));
elsif Need64 then
Item := Num'Fixed_Value (Aux64.Gets (S, Last, Scale));
else
Item := Num'Fixed_Value (Aux32.Gets (S, Last, Scale));
end if;
exception
when Constraint_Error => raise Data_Error;
end Get;
---------
-- Put --
---------
procedure Put
(File : File_Type;
Item : Num;
Fore : Field := Default_Fore;
Aft : Field := Default_Aft;
Exp : Field := Default_Exp)
is
begin
if Need128 then
Aux128.Put
(File, Int128'Integer_Value (Item), Fore, Aft, Exp, Scale);
elsif Need64 then
Aux64.Put
(File, Int64'Integer_Value (Item), Fore, Aft, Exp, Scale);
else
Aux32.Put
(File, Int32'Integer_Value (Item), Fore, Aft, Exp, Scale);
end if;
end Put;
procedure Put
(Item : Num;
Fore : Field := Default_Fore;
Aft : Field := Default_Aft;
Exp : Field := Default_Exp)
is
begin
Put (Current_Out, Item, Fore, Aft, Exp);
end Put;
procedure Put
(To : out Wide_String;
Item : Num;
Aft : Field := Default_Aft;
Exp : Field := Default_Exp)
is
S : String (To'First .. To'Last);
begin
if Need128 then
Aux128.Puts (S, Int128'Integer_Value (Item), Aft, Exp, Scale);
elsif Need64 then
Aux64.Puts (S, Int64'Integer_Value (Item), Aft, Exp, Scale);
else
Aux32.Puts (S, Int32'Integer_Value (Item), Aft, Exp, Scale);
end if;
for J in S'Range loop
To (J) := Wide_Character'Val (Character'Pos (S (J)));
end loop;
end Put;
end Ada.Wide_Text_IO.Decimal_IO;
|