File : 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 -- --
23 -- --
24 -- --
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;