File : a-tiinau.adb
------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
5 -- A D A . T E X T _ I O . I N T E G E R _ A U X --
-- --
-- B o d y --
-- --
-- $Revision: 1.10 $
10 -- --
-- Copyright (C) 1992-2001 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- --
15 -- 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 --
20 -- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
25 -- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
30 -- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
35
with Ada.Text_IO.Generic_Aux; use Ada.Text_IO.Generic_Aux;
with System.Img_BIU; use System.Img_BIU;
with System.Img_Int; use System.Img_Int;
40 with System.Img_LLB; use System.Img_LLB;
with System.Img_LLI; use System.Img_LLI;
with System.Img_LLW; use System.Img_LLW;
with System.Img_WIU; use System.Img_WIU;
with System.Val_Int; use System.Val_Int;
45 with System.Val_LLI; use System.Val_LLI;
package body Ada.Text_IO.Integer_Aux is
-----------------------
50 -- Local Subprograms --
-----------------------
procedure Load_Integer
(File : in File_Type;
55 Buf : out String;
Ptr : in out Natural);
-- This is an auxiliary routine that is used to load an possibly signed
-- integer literal value from the input file into Buf, starting at Ptr + 1.
-- On return, Ptr is set to the last character stored.
60
-------------
-- Get_Int --
-------------
65 procedure Get_Int
(File : in File_Type;
Item : out Integer;
Width : in Field)
is
70 Buf : String (1 .. Field'Last);
Ptr : aliased Integer := 1;
Stop : Integer := 0;
begin
75 if Width /= 0 then
Load_Width (File, Width, Buf, Stop);
String_Skip (Buf, Ptr);
else
Load_Integer (File, Buf, Stop);
80 end if;
Item := Scan_Integer (Buf, Ptr'Access, Stop);
Check_End_Of_Field (Buf, Stop, Ptr, Width);
end Get_Int;
85
-------------
-- Get_LLI --
-------------
90 procedure Get_LLI
(File : in File_Type;
Item : out Long_Long_Integer;
Width : in Field)
is
95 Buf : String (1 .. Field'Last);
Ptr : aliased Integer := 1;
Stop : Integer := 0;
begin
100 if Width /= 0 then
Load_Width (File, Width, Buf, Stop);
String_Skip (Buf, Ptr);
else
Load_Integer (File, Buf, Stop);
105 end if;
Item := Scan_Long_Long_Integer (Buf, Ptr'Access, Stop);
Check_End_Of_Field (Buf, Stop, Ptr, Width);
end Get_LLI;
110
--------------
-- Gets_Int --
--------------
115 procedure Gets_Int
(From : in String;
Item : out Integer;
Last : out Positive)
is
120 Pos : aliased Integer;
begin
String_Skip (From, Pos);
Item := Scan_Integer (From, Pos'Access, From'Last);
125 Last := Pos - 1;
exception
when Constraint_Error =>
Last := Pos - 1;
130 raise Data_Error;
end Gets_Int;
--------------
-- Gets_LLI --
135 --------------
procedure Gets_LLI
(From : in String;
Item : out Long_Long_Integer;
140 Last : out Positive)
is
Pos : aliased Integer;
begin
145 String_Skip (From, Pos);
Item := Scan_Long_Long_Integer (From, Pos'Access, From'Last);
Last := Pos - 1;
exception
150 when Constraint_Error =>
Last := Pos - 1;
raise Data_Error;
end Gets_LLI;
155 ------------------
-- Load_Integer --
------------------
procedure Load_Integer
160 (File : in File_Type;
Buf : out String;
Ptr : in out Natural)
is
Hash_Loc : Natural;
165 Loaded : Boolean;
begin
Load_Skip (File);
Load (File, Buf, Ptr, '+', '-');
170
Load_Digits (File, Buf, Ptr, Loaded);
if Loaded then
Load (File, Buf, Ptr, '#', ':', Loaded);
175
if Loaded then
Hash_Loc := Ptr;
Load_Extended_Digits (File, Buf, Ptr);
Load (File, Buf, Ptr, Buf (Hash_Loc));
180 end if;
Load (File, Buf, Ptr, 'E', 'e', Loaded);
if Loaded then
185
-- Note: it is strange to allow a minus sign, since the syntax
-- does not, but that is what ACVC test CE3704F, case (6) wants.
Load (File, Buf, Ptr, '+', '-');
190 Load_Digits (File, Buf, Ptr);
end if;
end if;
end Load_Integer;
195 -------------
-- Put_Int --
-------------
procedure Put_Int
200 (File : in File_Type;
Item : in Integer;
Width : in Field;
Base : in Number_Base)
is
205 Buf : String (1 .. Integer'Max (Field'Last, Width));
Ptr : Natural := 0;
begin
if Base = 10 and then Width = 0 then
210 Set_Image_Integer (Item, Buf, Ptr);
elsif Base = 10 then
Set_Image_Width_Integer (Item, Width, Buf, Ptr);
else
Set_Image_Based_Integer (Item, Base, Width, Buf, Ptr);
215 end if;
Put_Item (File, Buf (1 .. Ptr));
end Put_Int;
220 -------------
-- Put_LLI --
-------------
procedure Put_LLI
225 (File : in File_Type;
Item : in Long_Long_Integer;
Width : in Field;
Base : in Number_Base)
is
230 Buf : String (1 .. Integer'Max (Field'Last, Width));
Ptr : Natural := 0;
begin
if Base = 10 and then Width = 0 then
235 Set_Image_Long_Long_Integer (Item, Buf, Ptr);
elsif Base = 10 then
Set_Image_Width_Long_Long_Integer (Item, Width, Buf, Ptr);
else
Set_Image_Based_Long_Long_Integer (Item, Base, Width, Buf, Ptr);
240 end if;
Put_Item (File, Buf (1 .. Ptr));
end Put_LLI;
245 --------------
-- Puts_Int --
--------------
procedure Puts_Int
250 (To : out String;
Item : in Integer;
Base : in Number_Base)
is
Buf : String (1 .. Integer'Max (Field'Last, To'Length));
255 Ptr : Natural := 0;
begin
if Base = 10 then
Set_Image_Width_Integer (Item, To'Length, Buf, Ptr);
260 else
Set_Image_Based_Integer (Item, Base, To'Length, Buf, Ptr);
end if;
if Ptr > To'Length then
265 raise Layout_Error;
else
To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr);
end if;
end Puts_Int;
270
--------------
-- Puts_LLI --
--------------
275 procedure Puts_LLI
(To : out String;
Item : in Long_Long_Integer;
Base : in Number_Base)
is
280 Buf : String (1 .. Integer'Max (Field'Last, To'Length));
Ptr : Natural := 0;
begin
if Base = 10 then
285 Set_Image_Width_Long_Long_Integer (Item, To'Length, Buf, Ptr);
else
Set_Image_Based_Long_Long_Integer (Item, Base, To'Length, Buf, Ptr);
end if;
290 if Ptr > To'Length then
raise Layout_Error;
else
To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr);
end if;
295 end Puts_LLI;
end Ada.Text_IO.Integer_Aux;