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 --
11 -- Copyright (C) 1992-2001 Free Software Foundation, Inc. --
13 -- GNAT is free software; you can redistribute it and/or modify it under --
14 -- 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- --
16 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
17 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
18 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
19 -- 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 --
21 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
22 -- MA 02111-1307, USA. --
24 -- 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, --
26 -- this unit does not by itself cause the resulting executable to be --
27 -- covered by the GNU General Public License. This exception does not --
28 -- however invalidate any other reasons why the executable file might be --
29 -- covered by the GNU Public License. --
31 -- GNAT was originally developed by the GNAT team at New York University. --
32 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
34 ------------------------------------------------------------------------------
36 with Ada.Text_IO.Generic_Aux; use Ada.Text_IO.Generic_Aux;
38 with System.Img_BIU; use System.Img_BIU;
39 with System.Img_Uns; use System.Img_Uns;
40 with System.Img_LLB; use System.Img_LLB;
41 with System.Img_LLU; use System.Img_LLU;
42 with System.Img_LLW; use System.Img_LLW;
43 with System.Img_WIU; use System.Img_WIU;
44 with System.Val_Uns; use System.Val_Uns;
45 with System.Val_LLU; use System.Val_LLU;
47 package body Ada.Text_IO.Modular_Aux is
49 use System.Unsigned_Types;
51 -----------------------
52 -- Local Subprograms --
53 -----------------------
55 procedure Load_Modular
58 Ptr : in out Natural);
59 -- This is an auxiliary routine that is used to load an possibly signed
60 -- modular literal value from the input file into Buf, starting at Ptr + 1.
61 -- Ptr is left set to the last character stored.
69 Item : out Long_Long_Unsigned;
72 Buf : String (1 .. Field'Last);
74 Ptr : aliased Integer := 1;
78 Load_Width (File, Width, Buf, Stop);
79 String_Skip (Buf, Ptr);
81 Load_Modular (File, Buf, Stop);
84 Item := Scan_Long_Long_Unsigned (Buf, Ptr'Access, Stop);
85 Check_End_Of_Field (Buf, Stop, Ptr, Width);
97 Buf : String (1 .. Field'Last);
99 Ptr : aliased Integer := 1;
103 Load_Width (File, Width, Buf, Stop);
104 String_Skip (Buf, Ptr);
106 Load_Modular (File, Buf, Stop);
109 Item := Scan_Unsigned (Buf, Ptr'Access, Stop);
110 Check_End_Of_Field (Buf, Stop, Ptr, Width);
119 Item : out Long_Long_Unsigned;
122 Pos : aliased Integer;
125 String_Skip (From, Pos);
126 Item := Scan_Long_Long_Unsigned (From, Pos'Access, From'Last);
130 when Constraint_Error =>
144 Pos : aliased Integer;
147 String_Skip (From, Pos);
148 Item := Scan_Unsigned (From, Pos'Access, From'Last);
152 when Constraint_Error =>
161 procedure Load_Modular
164 Ptr : in out Natural)
172 -- Note: it is a bit strange to allow a minus sign here, but it seems
173 -- consistent with the general behavior expected by the ACVC tests
174 -- which is to scan past junk and then signal data error, see ACVC
175 -- test CE3704F, case (6), which is for signed integer exponents,
176 -- which seems a similar case.
178 Load (File, Buf, Ptr, '+', '-');
179 Load_Digits (File, Buf, Ptr, Loaded);
182 Load (File, Buf, Ptr, '#', ':', Loaded);
186 Load_Extended_Digits (File, Buf, Ptr);
187 Load (File, Buf, Ptr, Buf (Hash_Loc));
190 Load (File, Buf, Ptr, 'E', 'e', Loaded);
194 -- Note: it is strange to allow a minus sign, since the syntax
195 -- does not, but that is what ACVC test CE3704F, case (6) wants
196 -- for the signed case, and there seems no good reason to treat
197 -- exponents differently for the signed and unsigned cases.
199 Load (File, Buf, Ptr, '+', '-');
200 Load_Digits (File, Buf, Ptr);
211 Item : Long_Long_Unsigned;
215 Buf : String (1 .. Field'Last);
219 if Base = 10 and then Width = 0 then
220 Set_Image_Long_Long_Unsigned (Item, Buf, Ptr);
222 Set_Image_Width_Long_Long_Unsigned (Item, Width, Buf, Ptr);
224 Set_Image_Based_Long_Long_Unsigned (Item, Base, Width, Buf, Ptr);
227 Put_Item (File, Buf (1 .. Ptr));
240 Buf : String (1 .. Field'Last);
244 if Base = 10 and then Width = 0 then
245 Set_Image_Unsigned (Item, Buf, Ptr);
247 Set_Image_Width_Unsigned (Item, Width, Buf, Ptr);
249 Set_Image_Based_Unsigned (Item, Base, Width, Buf, Ptr);
252 Put_Item (File, Buf (1 .. Ptr));
261 Item : Long_Long_Unsigned;
264 Buf : String (1 .. Field'Last);
269 Set_Image_Width_Long_Long_Unsigned (Item, To'Length, Buf, Ptr);
271 Set_Image_Based_Long_Long_Unsigned (Item, Base, To'Length, Buf, Ptr);
274 if Ptr > To'Length then
277 To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr);
290 Buf : String (1 .. Field'Last);
295 Set_Image_Width_Unsigned (Item, To'Length, Buf, Ptr);
297 Set_Image_Based_Unsigned (Item, Base, To'Length, Buf, Ptr);
300 if Ptr > To'Length then
303 To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr);
307 end Ada.Text_IO.Modular_Aux;