------------------------------------------------------------------------------
-- Copyright (c) 2015, Natacha Porté --
-- --
-- Permission to use, copy, modify, and distribute this software for any --
-- purpose with or without fee is hereby granted, provided that the above --
-- copyright notice and this permission notice appear in all copies. --
-- --
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES --
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF --
-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR --
-- ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES --
-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN --
-- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF --
-- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. --
------------------------------------------------------------------------------
package body Natools.S_Expressions.Special_Descriptors is
overriding function Current_Event
(Object : in Constant_Descriptor) return Events.Event is
begin
return Object.Event;
end Current_Event;
overriding function Current_Atom (Object : in Constant_Descriptor)
return Atom
is
pragma Unreferenced (Object);
begin
raise Program_Error with "Current_Atom called on a special descriptor";
return Null_Atom;
end Current_Atom;
overriding function Current_Level (Object : in Constant_Descriptor)
return Natural
is
pragma Unreferenced (Object);
begin
raise Program_Error with "Current_Level called on a special descriptor";
return 0;
end Current_Level;
overriding procedure Query_Atom
(Object : in Constant_Descriptor;
Process : not null access procedure (Data : in Atom))
is
pragma Unreferenced (Object, Process);
begin
raise Program_Error with "Query_Atom called on a special descriptor";
end Query_Atom;
overriding procedure Read_Atom
(Object : in Constant_Descriptor;
Data : out Atom;
Length : out Count)
is
pragma Unreferenced (Object, Data, Length);
begin
raise Program_Error with "Read_Atom called on a special descriptor";
end Read_Atom;
overriding procedure Next
(Object : in out Constant_Descriptor;
Event : out Events.Event)
is
pragma Unmodified (Object);
begin
Event := Object.Event;
end Next;
overriding procedure Lock
(Object : in out Constant_Descriptor;
State : out Lockable.Lock_State)
is
pragma Unreferenced (Object, State);
begin
raise Program_Error with "Lock called on a special descriptor";
end Lock;
overriding procedure Unlock
(Object : in out Constant_Descriptor;
State : in out Lockable.Lock_State;
Finish : in Boolean := True)
is
pragma Unreferenced (Object, State, Finish);
begin
raise Program_Error with "Unlock called on a special descriptor";
end Unlock;
end Natools.S_Expressions.Special_Descriptors;