gcc/ada/a-assert.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --                       A D A . A S S E R T I O N S                        --
   6 --                                                                          --
   7 --            Copyright (C) 2015, Free Software Foundation, Inc.            --
   8 --                                                                          --
   9 --                                 S p e c                                  --
  10 --                                                                          --
  11 -- This specification is derived from the Ada Reference Manual for use with --
  12 -- GNAT. The copyright notice above, and the license provisions that follow --
  13 -- apply solely to the contracts that have been added.                      --
  14 --                                                                          --
  15 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  16 -- terms of the  GNU General Public License as published  by the Free Soft- --
  17 -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
  18 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  19 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  20 -- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
  21 --                                                                          --
  22 -- As a special exception under Section 7 of GPL version 3, you are granted --
  23 -- additional permissions described in the GCC Runtime Library Exception,   --
  24 -- version 3.1, as published by the Free Software Foundation.               --
  25 --                                                                          --
  26 -- You should have received a copy of the GNU General Public License and    --
  27 -- a copy of the GCC Runtime Library Exception along with this program;     --
  28 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  29 -- <http://www.gnu.org/licenses/>.                                          --
  30 --                                                                          --
  31 -- GNAT was originally developed  by the GNAT team at  New York University. --
  32 -- Extensive contributions were provided by Ada Core Technologies Inc. --
  33 --                                                                          --
  34 ------------------------------------------------------------------------------
  35
  36 --  Preconditions in this unit are meant for analysis only, not for run-time
  37 --  checking, so that the expected exceptions are raised when calling Assert.
  38 --  This is enforced by setting the corresponding assertion policy to Ignore.
  39
  40 pragma Assertion_Policy (Pre => Ignore);
  41
  42 --  We do a with of System.Assertions to get hold of the exception (following
  43 --  the specific RM permission that lets' Assertion_Error being a renaming).
  44 --  The suppression of Warnings stops the warning about bad categorization.
  45
  46 pragma Warnings (Off);
  47 with System.Assertions;
  48 pragma Warnings (On);
  49
  50 package Ada.Assertions with
  51   SPARK_Mode
  52 is
  53    pragma Pure (Assertions);
  54
  55    Assertion_Error : exception renames System.Assertions.Assert_Failure;
  56    --  This is the renaming that is allowed by 11.4.2(24). Note that the
  57    --  Exception_Name will refer to the one in System.Assertions (see
  58    --  AARM-11.4.1(12.b)).
  59
  60    procedure Assert (Check : Boolean) with
  61      Pre => Check;
  62
  63    procedure Assert (Check : Boolean; Message : String) with
  64      Pre => Check;
  65
  66 end Ada.Assertions;