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// Copyright (C) by Josh Blum. See LICENSE.txt for licensing information.
#ifndef INCLUDED_GRAS_DETAIL_ELEMENT_HPP
#define INCLUDED_GRAS_DETAIL_ELEMENT_HPP
#include <boost/weak_ptr.hpp>
namespace gras
{
//! Weak element overload for the case of shared_ptr container
struct WeakElementSharedPtr : WeakElement
{
WeakElementSharedPtr(boost::weak_ptr<const void> weak_self)
{
_weak_self = weak_self;
}
boost::shared_ptr<const void> lock(void)
{
return _weak_self.lock();
}
boost::weak_ptr<const void> _weak_self;
};
template <typename T>
inline Element::Element(const boost::shared_ptr<T> &elem)
{
//the container is a shared pointer, so save the reference,
//unless the reference was already set to something
if (not elem->weak_self)
{
elem->weak_self.reset(new WeakElementSharedPtr(elem));
}
//initialize this new Element from the argument passed
*this = *elem;
}
} //namespace gras
#endif /*INCLUDED_GRAS_DETAIL_ELEMENT_HPP*/
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