1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
|
------------------------------------------------------------------------------
-- --
-- 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) 1992-2005 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 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 --
-- 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 --
-- 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. --
-- --
-- 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
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;
|
