------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- G N A T . S O U R C E _ I N F O -- -- -- -- S p e c -- -- -- -- Copyright (C) 2000-2013, Free Software Foundation, Inc. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- -- ware Foundation; either version 3, or (at your option) any later ver- -- -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- -- or FITNESS FOR A PARTICULAR PURPOSE. -- -- -- -- As a special exception under Section 7 of GPL version 3, you are granted -- -- additional permissions described in the GCC Runtime Library Exception, -- -- version 3.1, as published by the Free Software Foundation. -- -- -- -- You should have received a copy of the GNU General Public License and -- -- a copy of the GCC Runtime Library Exception along with this program; -- -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- -- . -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This package provides some useful utility subprograms that provide access -- to source code information known at compile time. These subprograms are -- intrinsic operations that provide information known to the compiler in -- a form that can be embedded into the source program for identification -- and logging purposes. For example, an exception handler can print out -- the name of the source file in which the exception is handled. package GNAT.Source_Info is pragma Preelaborate; -- Note that this unit is Preelaborate, but not Pure, that's because the -- functions here such as Line are clearly not pure functions, and normally -- we mark intrinsic functions in a Pure unit as Pure, even though they are -- imported. -- -- Historical note: this used to be Pure, but that was when we marked all -- intrinsics as not Pure, even in Pure units, so no problems arose. function File return String; -- Return the name of the current file, not including the path information. -- The result is considered to be a static string constant. function Line return Positive; -- Return the current input line number. The result is considered to be a -- static expression. function Source_Location return String; -- Return a string literal of the form "name:line", where name is the -- current source file name without path information, and line is the -- current line number. In the event that instantiations are involved, -- additional suffixes of the same form are appended after the separating -- string " instantiated at ". The result is considered to be a static -- string constant. function Enclosing_Entity return String; -- Return the name of the current subprogram, package, task, entry or -- protected subprogram. The string is in exactly the form used for the -- declaration of the entity (casing and encoding conventions), and is -- considered to be a static string constant. The name is fully qualified -- using periods where possible (this is not always possible, notably in -- the case of entities appearing in unnamed block statements.) -- -- Note: if this function is used at the outer level of a generic package, -- the string returned will be the name of the instance, not the generic -- package itself. This is useful in identifying and logging information -- from within generic templates. private pragma Import (Intrinsic, File); pragma Import (Intrinsic, Line); pragma Import (Intrinsic, Source_Location); pragma Import (Intrinsic, Enclosing_Entity); end GNAT.Source_Info;