66 lines
2.2 KiB
C++
66 lines
2.2 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)
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2008, Hermann Vosseler <Ichthyostega@web.de>
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**Lumiera** is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version. See the file COPYING for further details.
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*/
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/** @file wrapperptr.hpp
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** Wrapper to treat several flavours of smart-pointers uniformly
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** @deprecated as of 2016 we should re-think how to organise visitor use in the Builder
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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 "steam/mobject/placement.hpp"
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#include "lib/p.hpp"
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namespace steam {
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namespace asset { class Asset; }
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namespace mobject { class MObject; }
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using WrapperTypes = lib::meta::Types< mobject::Placement<mobject::MObject>*
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, lib::P<asset::Asset>*
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> ::List;
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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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using WrapperPtr = lib::VariantO<steam::WrapperTypes, util::AccessCasted_O>;
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} // namespace lumiera
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#endif
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