gnatprove_11.2.3_f7ece6d3/share/examples/spark/spark_io/spark-text_io-fixed_io.adb

  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
------------------------------------------------------------------------------
--                                                                          --
--                           SPARK_IO EXAMPLES                              --
--                                                                          --
--                     Copyright (C) 2013, Altran UK                        --
--                                                                          --
-- SPARK 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 3,  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.                                     --
--                                                                          --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception,   --
-- version 3.1, as published by the Free Software Foundation.               --
--                                                                          --
-- You should have received a copy of the GNU General Public License and    --
-- a copy of the GCC Runtime Library Exception along with this program;     --
-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
-- <http://www.gnu.org/licenses/>.                                          --
--                                                                          --
------------------------------------------------------------------------------

package body SPARK.Text_IO.Fixed_IO is

   package Ada_Fixed_IO is new Ada.Text_IO.Fixed_IO (Num);

   procedure Get (File  : in out File_Type;
                  Item  : out Fixed_Result;
                  Width : in  Field := 0) is
      Re : Num;
   begin
      case File.Sort is
         when Std_Out | Std_Error =>
            Item := (Status => Mode_Error);
            File.Status := Mode_Error;
         when Std_In =>
            Ada_Fixed_IO.Get (Ada.Text_IO.Standard_Input, Re, Width);
            Item := (Status => Success, Item => Re);
            File.Status := Success;
         when A_File =>
            Ada_Fixed_IO.Get (File.File, Re, Width);
            Item := (Status => Success, Item => Re);
            File.Status := Success;
      end case;
   exception
      when Ada.Text_IO.Status_Error =>
         Item := (Status => Status_Error);
         File.Status := Status_Error;
      when Ada.Text_IO.Mode_Error   =>
         Item := (Status => Mode_Error);
         File.Status := Mode_Error;
      when Ada.Text_IO.Device_Error =>
         Item := (Status => Device_Error);
         File.Status := Device_Error;
      when Ada.Text_IO.End_Error =>
         Item := (Status => End_Error);
         File.Status := End_Error;
      when Ada.Text_IO.Data_Error =>
         Item := (Status => Data_Error);
         File.Status := Data_Error;
   end Get;

   procedure Get (Item  : out Fixed_Result;
                  Width : in  Field := 0) is
      Re : Num;
   begin
      Ada_Fixed_IO.Get (Ada.Text_IO.Standard_Input, Re, Width);
      Item := (Status => Success, Item => Re);
      Standard_Input.Status := Success;
   exception
      when Ada.Text_IO.Status_Error =>
         Item := (Status => Status_Error);
         Standard_Input.Status := Status_Error;
      when Ada.Text_IO.Mode_Error   =>
         Item := (Status => Mode_Error);
         Standard_Input.Status := Mode_Error;
      when Ada.Text_IO.Device_Error =>
         Item := (Status => Device_Error);
         Standard_Input.Status := Device_Error;
      when Ada.Text_IO.End_Error =>
         Item := (Status => End_Error);
         Standard_Input.Status := End_Error;
      when Ada.Text_IO.Data_Error =>
         Item := (Status => Data_Error);
         Standard_Input.Status := Data_Error;
   end Get;

   procedure Put (File : in out File_Type;
                  Item : in Num;
                  Fore : in Field := Default_Fore;
                  Aft  : in Field := Default_Aft;
                  Exp  : in Field := Default_Exp) is
   begin
      case File.Sort is
         when Std_In =>
            File.Status := Mode_Error;
         when Std_Out =>
            Ada_Fixed_IO.Put (Ada.Text_IO.Standard_Output,
                              Item, Fore, Aft, Exp);
            File.Status := Success;
         when Std_Error =>
            Ada_Fixed_IO.Put (Ada.Text_IO.Standard_Error,
                              Item, Fore, Aft, Exp);
            File.Status := Success;
         when A_File =>
            Ada_Fixed_IO.Put (File.File,
                              Item, Fore, Aft, Exp);
            File.Status := Success;
      end case;
   exception
      when Ada.Text_IO.Status_Error => File.Status := Status_Error;
      when Ada.Text_IO.Mode_Error   => File.Status := Mode_Error;
      when Ada.Text_IO.Device_Error => File.Status := Device_Error;
   end Put;

   procedure Put (Item : in Num;
                  Fore : in Field := Default_Fore;
                  Aft  : in Field := Default_Aft;
                  Exp  : in Field := Default_Exp) is
   begin
      Ada_Fixed_IO.Put (Ada.Text_IO.Standard_Output, Item, Fore, Aft, Exp);
      Standard_Output.Status := Success;
   exception
      when Ada.Text_IO.Status_Error =>
         Standard_Output.Status := Status_Error;
      when Ada.Text_IO.Mode_Error   =>
         Standard_Output.Status := Mode_Error;
      when Ada.Text_IO.Device_Error =>
         Standard_Output.Status := Device_Error;
   end Put;

   procedure Get (From   : in  String;
                  Item   : out Fixed_Result;
                  Last   : out Positive) is
      Re : Num;
   begin
      Ada_Fixed_IO.Get (From, Re, Last);
      Item := (Status => Success, Item => Re);
   exception
      when Ada.Text_IO.Data_Error =>
         Item := (Status => Data_Error);
         Last := 1;
   end Get;

   procedure Put (To     : out String;
                  Item   : in Num;
                  Aft    : in Field := Default_Aft;
                  Exp    : in Field := Default_Exp) renames
     Ada_Fixed_IO.Put;
end SPARK.Text_IO.Fixed_IO;