1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- A D A . W I D E _ W I D E _ T E X T _ I O . M O D U L A R _ A U X --
9 -- Copyright (C) 1992-2003 Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 with Ada.Wide_Wide_Text_IO.Generic_Aux; use Ada.Wide_Wide_Text_IO.Generic_Aux;
36 with System.Img_BIU; use System.Img_BIU;
37 with System.Img_Uns; use System.Img_Uns;
38 with System.Img_LLB; use System.Img_LLB;
39 with System.Img_LLU; use System.Img_LLU;
40 with System.Img_LLW; use System.Img_LLW;
41 with System.Img_WIU; use System.Img_WIU;
42 with System.Val_Uns; use System.Val_Uns;
43 with System.Val_LLU; use System.Val_LLU;
45 package body Ada.Wide_Wide_Text_IO.Modular_Aux is
47 use System.Unsigned_Types;
49 -----------------------
50 -- Local Subprograms --
51 -----------------------
53 procedure Load_Modular
56 Ptr : in out Natural);
57 -- This is an auxiliary routine that is used to load an possibly signed
58 -- modular literal value from the input file into Buf, starting at Ptr + 1.
59 -- Ptr is left set to the last character stored.
67 Item : out Long_Long_Unsigned;
70 Buf : String (1 .. Field'Last);
72 Ptr : aliased Integer := 1;
76 Load_Width (File, Width, Buf, Stop);
77 String_Skip (Buf, Ptr);
79 Load_Modular (File, Buf, Stop);
82 Item := Scan_Long_Long_Unsigned (Buf, Ptr'Access, Stop);
83 Check_End_Of_Field (Buf, Stop, Ptr, Width);
95 Buf : String (1 .. Field'Last);
97 Ptr : aliased Integer := 1;
101 Load_Width (File, Width, Buf, Stop);
102 String_Skip (Buf, Ptr);
104 Load_Modular (File, Buf, Stop);
107 Item := Scan_Unsigned (Buf, Ptr'Access, Stop);
108 Check_End_Of_Field (Buf, Stop, Ptr, Width);
117 Item : out Long_Long_Unsigned;
120 Pos : aliased Integer;
123 String_Skip (From, Pos);
124 Item := Scan_Long_Long_Unsigned (From, Pos'Access, From'Last);
128 when Constraint_Error =>
141 Pos : aliased Integer;
144 String_Skip (From, Pos);
145 Item := Scan_Unsigned (From, Pos'Access, From'Last);
149 when Constraint_Error =>
157 procedure Load_Modular
160 Ptr : in out Natural)
168 -- Note: it is a bit strange to allow a minus sign here, but it seems
169 -- consistent with the general behavior expected by the ACVC tests
170 -- which is to scan past junk and then signal data error, see ACVC
171 -- test CE3704F, case (6), which is for signed integer exponents,
172 -- which seems a similar case.
174 Load (File, Buf, Ptr, '+', '-');
175 Load_Digits (File, Buf, Ptr, Loaded);
178 Load (File, Buf, Ptr, '#', ':', Loaded);
182 Load_Extended_Digits (File, Buf, Ptr);
183 Load (File, Buf, Ptr, Buf (Hash_Loc));
186 Load (File, Buf, Ptr, 'E', 'e', Loaded);
190 -- Note: it is strange to allow a minus sign, since the syntax
191 -- does not, but that is what ACVC test CE3704F, case (6) wants
192 -- for the signed case, and there seems no good reason to treat
193 -- exponents differently for the signed and unsigned cases.
195 Load (File, Buf, Ptr, '+', '-');
196 Load_Digits (File, Buf, Ptr);
207 Item : Long_Long_Unsigned;
211 Buf : String (1 .. Field'Last);
215 if Base = 10 and then Width = 0 then
216 Set_Image_Long_Long_Unsigned (Item, Buf, Ptr);
218 Set_Image_Width_Long_Long_Unsigned (Item, Width, Buf, Ptr);
220 Set_Image_Based_Long_Long_Unsigned (Item, Base, Width, Buf, Ptr);
223 Put_Item (File, Buf (1 .. Ptr));
236 Buf : String (1 .. Field'Last);
240 if Base = 10 and then Width = 0 then
241 Set_Image_Unsigned (Item, Buf, Ptr);
243 Set_Image_Width_Unsigned (Item, Width, Buf, Ptr);
245 Set_Image_Based_Unsigned (Item, Base, Width, Buf, Ptr);
248 Put_Item (File, Buf (1 .. Ptr));
257 Item : Long_Long_Unsigned;
260 Buf : String (1 .. Field'Last);
265 Set_Image_Width_Long_Long_Unsigned (Item, To'Length, Buf, Ptr);
267 Set_Image_Based_Long_Long_Unsigned (Item, Base, To'Length, Buf, Ptr);
270 if Ptr > To'Length then
273 To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr);
286 Buf : String (1 .. Field'Last);
291 Set_Image_Width_Unsigned (Item, To'Length, Buf, Ptr);
293 Set_Image_Based_Unsigned (Item, Base, To'Length, Buf, Ptr);
296 if Ptr > To'Length then
299 To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr);
303 end Ada.Wide_Wide_Text_IO.Modular_Aux;