-- --
-- S p e c --
-- --
--- Copyright (C) 1992-2005, Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2010, 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 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, 51 Franklin Street, Fifth Floor, --
--- Boston, MA 02110-1301, 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. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- if it has a parameter of this type and is defined at a proper place for
-- primitive operations (new primitives are only defined in package spec,
-- overridden operation can be defined in any scope). If Old_Subp is not
- -- Empty we are in the overriding case.
+ -- Empty we are in the overriding case. If the tagged type associated with
+ -- Subp is a concurrent type (case that occurs when the type is declared in
+ -- a generic because the analysis of generics disables generation of the
+ -- corresponding record) then this routine does does not add "Subp" to the
+ -- list of primitive operations but leaves Subp decorated as dispatching
+ -- operation to enable checks associated with the Object.Operation notation
procedure Check_Operation_From_Incomplete_Type
(Subp : Entity_Id;
-- of "OldSubp" is adjusted to point to the inherited procedure of the
-- full view because it is always this one which has to be called.
+ function Covers_Some_Interface (Prim : Entity_Id) return Boolean;
+ -- Returns true if Prim covers some interface primitive of its associated
+ -- tagged type. The tagged type of Prim must be frozen when this function
+ -- is invoked.
+
function Find_Controlling_Arg (N : Node_Id) return Node_Id;
-- Returns the actual controlling argument if N is dynamically tagged,
-- and Empty if it is not dynamically tagged.
function Find_Dispatching_Type (Subp : Entity_Id) return Entity_Id;
- -- Check whether a subprogram is dispatching, and find the tagged
- -- type of the controlling argument or arguments.
+ -- Check whether a subprogram is dispatching, and find the tagged type of
+ -- the controlling argument or arguments. Returns Empty if Subp is not a
+ -- dispatching operation.
+
+ function Find_Primitive_Covering_Interface
+ (Tagged_Type : Entity_Id;
+ Iface_Prim : Entity_Id) return Entity_Id;
+ -- Search in the homonym chain for the primitive of Tagged_Type that covers
+ -- Iface_Prim. The homonym chain traversal is required to catch primitives
+ -- associated with the partial view of private types when processing the
+ -- corresponding full view. If the entity is not found then search for it
+ -- in the list of primitives of Tagged_Type. This latter search is needed
+ -- when the interface primitive is covered by a private subprogram. If the
+ -- primitive has not been covered yet then return the entity that will be
+ -- overriden when the primitive is covered (that is, return the entity
+ -- whose alias attribute references the interface primitive). If none of
+ -- these entities is found then return Empty.
+
+ type Subprogram_List is array (Nat range <>) of Entity_Id;
+ -- Type returned by Inherited_Subprograms function
+
+ function Inherited_Subprograms (S : Entity_Id) return Subprogram_List;
+ -- Given the spec of a subprogram, this function gathers any inherited
+ -- subprograms from direct inheritance or via interfaces. The list is
+ -- a list of entity id's of the specs of inherited subprograms. Returns
+ -- a null array if passed an Empty spec id. Note that the returned array
+ -- only includes subprograms and generic subprograms (and excludes any
+ -- other inherited entities, in particular enumeration literals).
function Is_Dynamically_Tagged (N : Node_Id) return Boolean;
-- Used to determine whether a call is dispatching, i.e. if is an
-- an expression of a class_Wide type, or a call to a function with
-- controlling result where at least one operand is dynamically tagged.
+ function Is_Null_Interface_Primitive (E : Entity_Id) return Boolean;
+ -- Returns True if E is a null procedure that is an interface primitive
+
function Is_Tag_Indeterminate (N : Node_Id) return Boolean;
-- An expression is tag-indeterminate if it is a call that dispatches
-- on result, and all controlling operands are also indeterminate.
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