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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- A D A . T E X T _ I O . M O D U L A R _ A U X --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2018, 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.Text_IO.Generic_Aux; use Ada.Text_IO.Generic_Aux;
with System.Img_BIU; use System.Img_BIU;
with System.Img_Uns; use System.Img_Uns;
with System.Img_LLB; use System.Img_LLB;
with System.Img_LLU; use System.Img_LLU;
with System.Img_LLW; use System.Img_LLW;
with System.Img_WIU; use System.Img_WIU;
with System.Val_Uns; use System.Val_Uns;
with System.Val_LLU; use System.Val_LLU;
package body Ada.Text_IO.Modular_Aux is
use System.Unsigned_Types;
-----------------------
-- Local Subprograms --
-----------------------
procedure Load_Modular
(File : File_Type;
Buf : out String;
Ptr : in out Natural);
-- This is an auxiliary routine that is used to load an possibly signed
-- modular literal value from the input file into Buf, starting at Ptr + 1.
-- Ptr is left set to the last character stored.
-------------
-- Get_LLU --
-------------
procedure Get_LLU
(File : File_Type;
Item : out Long_Long_Unsigned;
Width : Field)
is
Buf : String (1 .. Field'Last);
Stop : Integer := 0;
Ptr : aliased Integer := 1;
begin
if Width /= 0 then
Load_Width (File, Width, Buf, Stop);
String_Skip (Buf, Ptr);
else
Load_Modular (File, Buf, Stop);
end if;
Item := Scan_Long_Long_Unsigned (Buf, Ptr'Access, Stop);
Check_End_Of_Field (Buf, Stop, Ptr, Width);
end Get_LLU;
-------------
-- Get_Uns --
-------------
procedure Get_Uns
(File : File_Type;
Item : out Unsigned;
Width : Field)
is
Buf : String (1 .. Field'Last);
Stop : Integer := 0;
Ptr : aliased Integer := 1;
begin
if Width /= 0 then
Load_Width (File, Width, Buf, Stop);
String_Skip (Buf, Ptr);
else
Load_Modular (File, Buf, Stop);
end if;
Item := Scan_Unsigned (Buf, Ptr'Access, Stop);
Check_End_Of_Field (Buf, Stop, Ptr, Width);
end Get_Uns;
--------------
-- Gets_LLU --
--------------
procedure Gets_LLU
(From : String;
Item : out Long_Long_Unsigned;
Last : out Positive)
is
Pos : aliased Integer;
begin
String_Skip (From, Pos);
Item := Scan_Long_Long_Unsigned (From, Pos'Access, From'Last);
Last := Pos - 1;
exception
when Constraint_Error =>
raise Data_Error;
end Gets_LLU;
--------------
-- Gets_Uns --
--------------
procedure Gets_Uns
(From : String;
Item : out Unsigned;
Last : out Positive)
is
Pos : aliased Integer;
begin
String_Skip (From, Pos);
Item := Scan_Unsigned (From, Pos'Access, From'Last);
Last := Pos - 1;
exception
when Constraint_Error =>
raise Data_Error;
end Gets_Uns;
------------------
-- Load_Modular --
------------------
procedure Load_Modular
(File : File_Type;
Buf : out String;
Ptr : in out Natural)
is
Hash_Loc : Natural;
Loaded : Boolean;
begin
Load_Skip (File);
-- Note: it is a bit strange to allow a minus sign here, but it seems
-- consistent with the general behavior expected by the ACVC tests
-- which is to scan past junk and then signal data error, see ACVC
-- test CE3704F, case (6), which is for signed integer exponents,
-- which seems a similar case.
Load (File, Buf, Ptr, '+', '-');
Load_Digits (File, Buf, Ptr, Loaded);
if Loaded then
-- Deal with based case. We recognize either the standard '#' or the
-- allowed alternative replacement ':' (see RM J.2(3)).
Load (File, Buf, Ptr, '#', ':', Loaded);
if Loaded then
Hash_Loc := Ptr;
Load_Extended_Digits (File, Buf, Ptr);
Load (File, Buf, Ptr, Buf (Hash_Loc));
end if;
Load (File, Buf, Ptr, 'E', 'e', Loaded);
if Loaded then
-- Note: it is strange to allow a minus sign, since the syntax
-- does not, but that is what ACVC test CE3704F, case (6) wants
-- for the signed case, and there seems no good reason to treat
-- exponents differently for the signed and unsigned cases.
Load (File, Buf, Ptr, '+', '-');
Load_Digits (File, Buf, Ptr);
end if;
end if;
end Load_Modular;
-------------
-- Put_LLU --
-------------
procedure Put_LLU
(File : File_Type;
Item : Long_Long_Unsigned;
Width : Field;
Base : Number_Base)
is
Buf : String (1 .. Field'Last);
Ptr : Natural := 0;
begin
if Base = 10 and then Width = 0 then
Set_Image_Long_Long_Unsigned (Item, Buf, Ptr);
elsif Base = 10 then
Set_Image_Width_Long_Long_Unsigned (Item, Width, Buf, Ptr);
else
Set_Image_Based_Long_Long_Unsigned (Item, Base, Width, Buf, Ptr);
end if;
Put_Item (File, Buf (1 .. Ptr));
end Put_LLU;
-------------
-- Put_Uns --
-------------
procedure Put_Uns
(File : File_Type;
Item : Unsigned;
Width : Field;
Base : Number_Base)
is
Buf : String (1 .. Field'Last);
Ptr : Natural := 0;
begin
if Base = 10 and then Width = 0 then
Set_Image_Unsigned (Item, Buf, Ptr);
elsif Base = 10 then
Set_Image_Width_Unsigned (Item, Width, Buf, Ptr);
else
Set_Image_Based_Unsigned (Item, Base, Width, Buf, Ptr);
end if;
Put_Item (File, Buf (1 .. Ptr));
end Put_Uns;
--------------
-- Puts_LLU --
--------------
procedure Puts_LLU
(To : out String;
Item : Long_Long_Unsigned;
Base : Number_Base)
is
Buf : String (1 .. Field'Last);
Ptr : Natural := 0;
begin
if Base = 10 then
Set_Image_Width_Long_Long_Unsigned (Item, To'Length, Buf, Ptr);
else
Set_Image_Based_Long_Long_Unsigned (Item, Base, To'Length, Buf, Ptr);
end if;
if Ptr > To'Length then
raise Layout_Error;
else
To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr);
end if;
end Puts_LLU;
--------------
-- Puts_Uns --
--------------
procedure Puts_Uns
(To : out String;
Item : Unsigned;
Base : Number_Base)
is
Buf : String (1 .. Field'Last);
Ptr : Natural := 0;
begin
if Base = 10 then
Set_Image_Width_Unsigned (Item, To'Length, Buf, Ptr);
else
Set_Image_Based_Unsigned (Item, Base, To'Length, Buf, Ptr);
end if;
if Ptr > To'Length then
raise Layout_Error;
else
To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr);
end if;
end Puts_Uns;
end Ada.Text_IO.Modular_Aux;
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