67 lines
2.2 KiB
C++
67 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) 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.hpp"
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#include "lib/access-casted.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 ::lumiera::typelist::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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typedef lib::Variant<proc::WrapperTypes, util::AccessCasted> WrapperPtr;
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} // namespace lumiera
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#endif
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