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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- I M P U N I T --
-- --
-- S p e c --
-- --
-- Copyright (C) 2000-2010, 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. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING3. If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This package contains data and functions used to determine if a given
-- unit is an internal unit intended only for use by the implementation
-- and which should not be directly WITH'ed by user code. It also checks
-- for Ada 05 units that should only be WITH'ed in Ada 05 mode.
with Types; use Types;
package Impunit is
type Kind_Of_Unit is
(Implementation_Unit,
-- Unit from predefined library intended to be used only by the
-- compiler generated code, or from the implementation of the run time.
-- Use of such a unit generates a warning unless the client is compiled
-- with the -gnatg switch. If we are being super strict, this should be
-- an error for the case of Ada units, but that seems over strenuous.
Not_Predefined_Unit,
-- This is not a predefined unit, so no checks are needed
Ada_95_Unit,
-- This unit is defined in the Ada 95 RM, and can be freely with'ed
-- in both Ada 95 mode and Ada 05 mode. Note that in Ada 83 mode, no
-- child units are allowed, so you can't even name such a unit.
Ada_2005_Unit,
-- This unit is defined in the Ada 2005 RM. Withing this unit from a
-- Ada 95 mode program will generate a warning (again, strictly speaking
-- this should be an error, but that seems over-strenuous).
Ada_2012_Unit);
-- This unit is defined in the Ada 2012 RM. Withing this unit from a Ada
-- 95 mode or Ada 2005 program will generate a warning (again, strictly
-- speaking this should be an error, but that seems over-strenuous).
function Get_Kind_Of_Unit (U : Unit_Number_Type) return Kind_Of_Unit;
-- Given the unit number of a unit, this function determines the type
-- of the unit, as defined above. If the result is Implementation_Unit,
-- then the name of a possible atlernative equivalent unit is placed in
-- Error_Msg_String/Slen on return. If there is no alternative name, or
-- if the result is not Implementation_Unit, then Error_Msg_Slen is zero
-- on return, indicating that no alternative name was found.
function Is_Known_Unit (Nam : Node_Id) return Boolean;
-- Nam is the possible name of a child unit, represented as a selected
-- component node. This function determines whether the name matches
-- one of the known library units, and if so, returns True. If the name
-- does not match any known library unit, False is returned.
end Impunit;
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