1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--           A D A . W I D E _ T E X T _ I O . I N T E G E R _ I O          --
6--                                                                          --
7--                                 B o d y                                  --
8--                                                                          --
9--          Copyright (C) 1992-2021, Free Software Foundation, Inc.         --
10--                                                                          --
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 3,  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.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32with Ada.Wide_Text_IO.Integer_Aux;
33with System.Img_BIU;  use System.Img_BIU;
34with System.Img_Int;  use System.Img_Int;
35with System.Img_LLB;  use System.Img_LLB;
36with System.Img_LLI;  use System.Img_LLI;
37with System.Img_LLW;  use System.Img_LLW;
38with System.Img_LLLB; use System.Img_LLLB;
39with System.Img_LLLI; use System.Img_LLLI;
40with System.Img_LLLW; use System.Img_LLLW;
41with System.Img_WIU;  use System.Img_WIU;
42with System.Val_Int;  use System.Val_Int;
43with System.Val_LLI;  use System.Val_LLI;
44with System.Val_LLLI; use System.Val_LLLI;
45with System.WCh_Con;  use System.WCh_Con;
46with System.WCh_WtS;  use System.WCh_WtS;
47
48package body Ada.Wide_Text_IO.Integer_IO is
49
50   package Aux_Int is new
51     Ada.Wide_Text_IO.Integer_Aux
52       (Integer,
53        Scan_Integer,
54        Set_Image_Integer,
55        Set_Image_Width_Integer,
56        Set_Image_Based_Integer);
57
58   package Aux_LLI is new
59     Ada.Wide_Text_IO.Integer_Aux
60       (Long_Long_Integer,
61        Scan_Long_Long_Integer,
62        Set_Image_Long_Long_Integer,
63        Set_Image_Width_Long_Long_Integer,
64        Set_Image_Based_Long_Long_Integer);
65
66   package Aux_LLLI is new
67     Ada.Wide_Text_IO.Integer_Aux
68       (Long_Long_Long_Integer,
69        Scan_Long_Long_Long_Integer,
70        Set_Image_Long_Long_Long_Integer,
71        Set_Image_Width_Long_Long_Long_Integer,
72        Set_Image_Based_Long_Long_Long_Integer);
73
74   Need_LLI  : constant Boolean := Num'Base'Size > Integer'Size;
75   Need_LLLI : constant Boolean := Num'Base'Size > Long_Long_Integer'Size;
76   --  Throughout this generic body, we distinguish between cases where type
77   --  Integer is acceptable, where type Long_Long_Integer is acceptable and
78   --  where type Long_Long_Long_Integer is needed. These boolean constants
79   --  are used to test for these cases and since they are constant, only code
80   --  for the relevant case will be included in the instance.
81
82   ---------
83   -- Get --
84   ---------
85
86   procedure Get
87     (File  : File_Type;
88      Item  : out Num;
89      Width : Field := 0)
90   is
91      --  We depend on a range check to get Data_Error
92
93      pragma Unsuppress (Range_Check);
94      pragma Unsuppress (Overflow_Check);
95
96   begin
97      if Need_LLLI then
98         Aux_LLLI.Get (File, Long_Long_Long_Integer (Item), Width);
99      elsif Need_LLI then
100         Aux_LLI.Get (File, Long_Long_Integer (Item), Width);
101      else
102         Aux_Int.Get (File, Integer (Item), Width);
103      end if;
104
105   exception
106      when Constraint_Error => raise Data_Error;
107   end Get;
108
109   procedure Get
110     (Item  : out Num;
111      Width : Field := 0)
112   is
113   begin
114      Get (Current_In, Item, Width);
115   end Get;
116
117   procedure Get
118     (From : Wide_String;
119      Item : out Num;
120      Last : out Positive)
121   is
122      --  We depend on a range check to get Data_Error
123
124      pragma Unsuppress (Range_Check);
125      pragma Unsuppress (Overflow_Check);
126
127      S : constant String := Wide_String_To_String (From, WCEM_Upper);
128      --  String on which we do the actual conversion. Note that the method
129      --  used for wide character encoding is irrelevant, since if there is
130      --  a character outside the Standard.Character range then the call to
131      --  Aux.Gets will raise Data_Error in any case.
132
133   begin
134      if Need_LLLI then
135         Aux_LLLI.Gets (S, Long_Long_Long_Integer (Item), Last);
136      elsif Need_LLI then
137         Aux_LLI.Gets (S, Long_Long_Integer (Item), Last);
138      else
139         Aux_Int.Gets (S, Integer (Item), Last);
140      end if;
141
142   exception
143      when Constraint_Error => raise Data_Error;
144   end Get;
145
146   ---------
147   -- Put --
148   ---------
149
150   procedure Put
151     (File  : File_Type;
152      Item  : Num;
153      Width : Field := Default_Width;
154      Base  : Number_Base := Default_Base)
155   is
156   begin
157      if Need_LLLI then
158         Aux_LLLI.Put (File, Long_Long_Long_Integer (Item), Width, Base);
159      elsif Need_LLI then
160         Aux_LLI.Put (File, Long_Long_Integer (Item), Width, Base);
161      else
162         Aux_Int.Put (File, Integer (Item), Width, Base);
163      end if;
164   end Put;
165
166   procedure Put
167     (Item  : Num;
168      Width : Field := Default_Width;
169      Base  : Number_Base := Default_Base)
170   is
171   begin
172      Put (Current_Out, Item, Width, Base);
173   end Put;
174
175   procedure Put
176     (To   : out Wide_String;
177      Item : Num;
178      Base : Number_Base := Default_Base)
179   is
180      S : String (To'First .. To'Last);
181
182   begin
183      if Need_LLLI then
184         Aux_LLLI.Puts (S, Long_Long_Long_Integer (Item), Base);
185      elsif Need_LLI then
186         Aux_LLI.Puts (S, Long_Long_Integer (Item), Base);
187      else
188         Aux_Int.Puts (S, Integer (Item), Base);
189      end if;
190
191      for J in S'Range loop
192         To (J) := Wide_Character'Val (Character'Pos (S (J)));
193      end loop;
194   end Put;
195
196end Ada.Wide_Text_IO.Integer_IO;
197