1 ------------------------------------------------------------------------------
3 -- GNAT RUNTIME COMPONENTS --
5 -- A D A . T E X T _ I O . M O D U L A R _ A U X --
10 -- Copyright (C) 1992-2001 Free Software Foundation, Inc. --
12 -- GNAT is free software; you can redistribute it and/or modify it under --
13 -- terms of the GNU General Public License as published by the Free Soft- --
14 -- ware Foundation; either version 2, or (at your option) any later ver- --
15 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
16 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
17 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
18 -- for more details. You should have received a copy of the GNU General --
19 -- Public License distributed with GNAT; see file COPYING. If not, write --
20 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
21 -- MA 02111-1307, USA. --
23 -- As a special exception, if other files instantiate generics from this --
24 -- unit, or you link this unit with other files to produce an executable, --
25 -- this unit does not by itself cause the resulting executable to be --
26 -- covered by the GNU General Public License. This exception does not --
27 -- however invalidate any other reasons why the executable file might be --
28 -- covered by the GNU Public License. --
30 -- GNAT was originally developed by the GNAT team at New York University. --
31 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
33 ------------------------------------------------------------------------------
35 with Ada.Text_IO.Generic_Aux; use Ada.Text_IO.Generic_Aux;
37 with System.Img_BIU; use System.Img_BIU;
38 with System.Img_Uns; use System.Img_Uns;
39 with System.Img_LLB; use System.Img_LLB;
40 with System.Img_LLU; use System.Img_LLU;
41 with System.Img_LLW; use System.Img_LLW;
42 with System.Img_WIU; use System.Img_WIU;
43 with System.Val_Uns; use System.Val_Uns;
44 with System.Val_LLU; use System.Val_LLU;
46 package body Ada.Text_IO.Modular_Aux is
48 use System.Unsigned_Types;
50 -----------------------
51 -- Local Subprograms --
52 -----------------------
54 procedure Load_Modular
57 Ptr : in out Natural);
58 -- This is an auxiliary routine that is used to load an possibly signed
59 -- modular literal value from the input file into Buf, starting at Ptr + 1.
60 -- Ptr is left set to the last character stored.
68 Item : out Long_Long_Unsigned;
71 Buf : String (1 .. Field'Last);
73 Ptr : aliased Integer := 1;
77 Load_Width (File, Width, Buf, Stop);
78 String_Skip (Buf, Ptr);
80 Load_Modular (File, Buf, Stop);
83 Item := Scan_Long_Long_Unsigned (Buf, Ptr'Access, Stop);
84 Check_End_Of_Field (Buf, Stop, Ptr, Width);
96 Buf : String (1 .. Field'Last);
98 Ptr : aliased Integer := 1;
102 Load_Width (File, Width, Buf, Stop);
103 String_Skip (Buf, Ptr);
105 Load_Modular (File, Buf, Stop);
108 Item := Scan_Unsigned (Buf, Ptr'Access, Stop);
109 Check_End_Of_Field (Buf, Stop, Ptr, Width);
118 Item : out Long_Long_Unsigned;
121 Pos : aliased Integer;
124 String_Skip (From, Pos);
125 Item := Scan_Long_Long_Unsigned (From, Pos'Access, From'Last);
129 when Constraint_Error =>
143 Pos : aliased Integer;
146 String_Skip (From, Pos);
147 Item := Scan_Unsigned (From, Pos'Access, From'Last);
151 when Constraint_Error =>
160 procedure Load_Modular
163 Ptr : in out Natural)
171 -- Note: it is a bit strange to allow a minus sign here, but it seems
172 -- consistent with the general behavior expected by the ACVC tests
173 -- which is to scan past junk and then signal data error, see ACVC
174 -- test CE3704F, case (6), which is for signed integer exponents,
175 -- which seems a similar case.
177 Load (File, Buf, Ptr, '+', '-');
178 Load_Digits (File, Buf, Ptr, Loaded);
181 Load (File, Buf, Ptr, '#', ':', Loaded);
185 Load_Extended_Digits (File, Buf, Ptr);
186 Load (File, Buf, Ptr, Buf (Hash_Loc));
189 Load (File, Buf, Ptr, 'E', 'e', Loaded);
193 -- Note: it is strange to allow a minus sign, since the syntax
194 -- does not, but that is what ACVC test CE3704F, case (6) wants
195 -- for the signed case, and there seems no good reason to treat
196 -- exponents differently for the signed and unsigned cases.
198 Load (File, Buf, Ptr, '+', '-');
199 Load_Digits (File, Buf, Ptr);
210 Item : Long_Long_Unsigned;
214 Buf : String (1 .. Field'Last);
218 if Base = 10 and then Width = 0 then
219 Set_Image_Long_Long_Unsigned (Item, Buf, Ptr);
221 Set_Image_Width_Long_Long_Unsigned (Item, Width, Buf, Ptr);
223 Set_Image_Based_Long_Long_Unsigned (Item, Base, Width, Buf, Ptr);
226 Put_Item (File, Buf (1 .. Ptr));
239 Buf : String (1 .. Field'Last);
243 if Base = 10 and then Width = 0 then
244 Set_Image_Unsigned (Item, Buf, Ptr);
246 Set_Image_Width_Unsigned (Item, Width, Buf, Ptr);
248 Set_Image_Based_Unsigned (Item, Base, Width, Buf, Ptr);
251 Put_Item (File, Buf (1 .. Ptr));
260 Item : Long_Long_Unsigned;
263 Buf : String (1 .. Field'Last);
268 Set_Image_Width_Long_Long_Unsigned (Item, To'Length, Buf, Ptr);
270 Set_Image_Based_Long_Long_Unsigned (Item, Base, To'Length, Buf, Ptr);
273 if Ptr > To'Length then
276 To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr);
289 Buf : String (1 .. Field'Last);
294 Set_Image_Width_Unsigned (Item, To'Length, Buf, Ptr);
296 Set_Image_Based_Unsigned (Item, Base, To'Length, Buf, Ptr);
299 if Ptr > To'Length then
302 To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr);
306 end Ada.Text_IO.Modular_Aux;