down_cast.h

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**  Copyright Fougue (30 Mar. 2015)
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#pragma once

#include <Handle_Standard_Transient.hxx>

namespace occ {

template<typename TYPE>
class down_cast
{
public:
    explicit down_cast<TYPE>(const Handle_Standard_Transient& handle);
    operator TYPE() const;
    const TYPE operator->() const;
private:
    const Handle_Standard_Transient& m_handle;
};



// --
// -- Implementation
// --

template<typename TYPE>
down_cast<TYPE>::down_cast(const Handle_Standard_Transient& handle)
    : m_handle(handle)
{
}

template<typename TYPE>
down_cast<TYPE>::operator TYPE() const
{
    return TYPE::DownCast(m_handle);
}

template<typename TYPE>
const TYPE down_cast<TYPE>::operator->() const
{
    return TYPE::DownCast(m_handle);
}
} // namespace occ