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
40pragma 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
46pragma Warnings (Off);
47with System.Assertions;
48pragma Warnings (On);
49
50package Ada.Assertions with
51  SPARK_Mode
52is
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
66end Ada.Assertions;
67