-- --
-- S p e c --
-- --
--- --
--- Copyright (C) 2000 Free Software Foundation, Inc. --
+-- Copyright (C) 2000-2009, 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 2, or (at your option) any later ver- --
+-- 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 COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- 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. --
--- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
+-- 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.
+-- 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
- function Implementation_Unit (U : Unit_Number_Type) return Boolean;
- -- Given the unit number of a unit, this function determines if it is a
- -- unit that is intended to be used only internally by the implementation.
- -- This is used for posting warnings for improper WITH's of such units
- -- (such WITH's are allowed without warnings only in GNAT_Mode set by
- -- the use of -gnatg). True is returned if a warning should be posted.
+ 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_05_Unit);
+ -- This unit is defined in the Ada 05 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).
+
+ 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;
OSDN Git Service
