1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--                     G N A T . S O U R C E _ I N F O                      --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--                     Copyright (C) 2000-2005 AdaCore                      --
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 provides some useful utility subprograms that provide access
33--  to source code information known at compile time. These subprograms are
34--  intrinsic operations that provide information known to the compiler in
35--  a form that can be embedded into the source program for identification
36--  and logging purposes. For example, an exception handler can print out
37--  the name of the source file in which the exception is handled.
38
39package GNAT.Source_Info is
40   pragma Pure;
41
42   function File return String;
43   --  Return the name of the current file, not including the path information.
44   --  The result is considered to be a static string constant.
45
46   function Line return Positive;
47   --  Return the current input line number. The result is considered to be a
48   --  static expression.
49
50   function Source_Location return String;
51   --  Return a string literal of the form "name:line", where name is the
52   --  current source file name without path information, and line is the
53   --  current line number. In the event that instantiations are involved,
54   --  additional suffixes of the same form are appended after the separating
55   --  string " instantiated at ". The result is considered to be a static
56   --  string constant.
57
58   function Enclosing_Entity return String;
59   --  Return the name of the current subprogram, package, task, entry or
60   --  protected subprogram. The string is in exactly the form used for the
61   --  declaration of the entity (casing and encoding conventions), and is
62   --  considered to be a static string constant. The name is fully qualified
63   --  using periods where possible (this is not always possible, notably in
64   --  the case of entities appearing in unnamed block statements.)
65   --
66   --  Note: if this function is used at the outer level of a generic package,
67   --  the string returned will be the name of the instance, not the generic
68   --  package itself. This is useful in identifying and logging information
69   --  from within generic templates.
70
71private
72   pragma Import (Intrinsic, File);
73   pragma Import (Intrinsic, Line);
74   pragma Import (Intrinsic, Source_Location);
75   pragma Import (Intrinsic, Enclosing_Entity);
76end GNAT.Source_Info;
77