gcc/ada/libgnat/s-imgint.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --                       S Y S T E M . I M G _ I N T                        --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2023, 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
  32 --  This package contains the routines for supporting the Image attribute for
  33 --  signed integer types up to Integer, and also for conversion operations
  34 --  required in Text_IO.Integer_IO for such types.
  35
  36 --  Preconditions in this unit are meant for analysis only, not for run-time
  37 --  checking, so that the expected exceptions are raised. This is enforced by
  38 --  setting the corresponding assertion policy to Ignore. Postconditions and
  39 --  contract cases should not be executed at runtime as well, in order not to
  40 --  slow down the execution of these functions.
  41
  42 pragma Assertion_Policy (Pre                => Ignore,
  43                          Post               => Ignore,
  44                          Contract_Cases     => Ignore,
  45                          Ghost              => Ignore,
  46                          Subprogram_Variant => Ignore);
  47
  48 with System.Image_I;
  49 with System.Unsigned_Types;
  50 with System.Vs_Int;
  51 with System.Vs_Uns;
  52
  53 package System.Img_Int
  54   with SPARK_Mode
  55 is
  56    subtype Unsigned is Unsigned_Types.Unsigned;
  57
  58    package Impl is new Image_I
  59      (Int    => Integer,
  60       Uns    => Unsigned,
  61       U_Spec => System.Vs_Uns.Spec,
  62       I_Spec => System.Vs_Int.Spec);
  63
  64    procedure Image_Integer
  65      (V : Integer;
  66       S : in out String;
  67       P : out Natural)
  68      renames Impl.Image_Integer;
  69
  70    procedure Set_Image_Integer
  71      (V : Integer;
  72       S : in out String;
  73       P : in out Natural)
  74      renames Impl.Set_Image_Integer;
  75
  76 end System.Img_Int;