Ichthyostega
5d056f032d
All relevant uses will rely on the more strict access policy implemented with the new util::AccessCasted. Along the same line of thinking, I've removed the "second try" convenience conversion from the typed get-Function of OpaqueHolder. Such an unbounded "convert it somehow" approach is almost never a good idea. Either, one knows by design the precise type to expect, or alternatively should rely on the base interface solely. ...with the sole exception of the usage in WrapperPointer, which in itself looks obsolete to me; we should better re-think the way we handle "wrapped" objects for the BuilderTools, once we actually start implementing the Builder Ticket #450
70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
/*
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WRAPPERPTR.hpp - variant record able to hold a pointer to some smart-ptr/wrapper types, providing conversions
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Copyright (C) Lumiera.org
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2008, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef LUMIERA_WRAPPERPTR_H
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#define LUMIERA_WRAPPERPTR_H
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#include "lib/variant-o.hpp"
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#include "lib/access-casted-o.hpp"
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#include "lib/meta/typelist.hpp"
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#include "proc/mobject/placement.hpp"
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#include "lib/p.hpp"
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namespace proc {
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namespace asset { class Asset; }
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namespace mobject { class MObject; }
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typedef lib::meta::Types < mobject::Placement<mobject::MObject>*
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, lib::P<asset::Asset>*
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> ::List
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WrapperTypes;
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}
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namespace lumiera {
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/**
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* helper to treat various sorts of smart-ptrs uniformly.
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* Implemented as a variant-type value object, it is preconfigured
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* with the possible hierarchy-base classes used within this application.
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* Thus, when passing in an arbitrary smart-ptr, the best fitting smart-ptr
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* type pointing to the corresponding base class is selected for internal storage.
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* Later on, stored values can be retrieved either utilising static or dynamic casts;
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* error reporting is similar to the behaviour of dynamic_cast<T>: when retrieving
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* a pointer, NULL is returned in case of mismatch.
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*
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* @deprecated not sure if this was a good idea anyway. Better re-think how to handle wrapped objects in visitation
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* @todo really need to switch to the new lib::Variant and util::AccessCasted implementation ////////////////TICKET #450
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*/
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typedef lib::VariantO<proc::WrapperTypes, util::AccessCasted_O> WrapperPtr;
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} // namespace lumiera
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#endif
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