// Copyright 2016 Klemens Morgenstern, Antony Polukhin
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt
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// or copy at http://www.boost.org/LICENSE_1_0.txt)
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// For more information, see http://www.boost.org
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#ifndef BOOST_DLL_DETAIL_TYPE_INFO_HPP_
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#define BOOST_DLL_DETAIL_TYPE_INFO_HPP_
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#include <typeinfo>
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#include <cstring>
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#include <boost/dll/config.hpp>
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#if defined(_MSC_VER) // MSVC, Clang-cl, and ICC on Windows
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#include <boost/winapi/basic_types.hpp>
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#endif
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namespace boost { namespace dll { namespace detail {
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#if defined(_MSC_VER) // MSVC, Clang-cl, and ICC on Windows
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#if defined ( _WIN64 )
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template<typename Class, typename Lib, typename Storage>
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const std::type_info& load_type_info(Lib & lib, Storage & storage)
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{
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struct RTTICompleteObjectLocator
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{
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boost::winapi::DWORD_ signature; //always zero ?
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boost::winapi::DWORD_ offset; //offset of this vtable in the complete class
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boost::winapi::DWORD_ cdOffset; //constructor displacement offset
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boost::winapi::DWORD_ pTypeDescriptorOffset; //TypeDescriptor of the complete class
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boost::winapi::DWORD_ pClassDescriptorOffset; //describes inheritance hierarchy (ignored)
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};
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RTTICompleteObjectLocator** vtable_p = &lib.template get<RTTICompleteObjectLocator*>(storage.template get_vtable<Class>());
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vtable_p--;
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auto vtable = *vtable_p;
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auto nat = reinterpret_cast<const char*>(lib.native());
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nat += vtable->pTypeDescriptorOffset;
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return *reinterpret_cast<const std::type_info*>(nat);
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}
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#else
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template<typename Class, typename Lib, typename Storage>
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const std::type_info& load_type_info(Lib & lib, Storage & storage)
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{
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struct RTTICompleteObjectLocator
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{
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boost::winapi::DWORD_ signature; //always zero ?
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boost::winapi::DWORD_ offset; //offset of this vtable in the complete class
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boost::winapi::DWORD_ cdOffset; //constructor displacement offset
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const std::type_info* pTypeDescriptor; //TypeDescriptor of the complete class
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void* pClassDescriptor; //describes inheritance hierarchy (ignored)
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};
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RTTICompleteObjectLocator** vtable_p = &lib.template get<RTTICompleteObjectLocator*>(storage.template get_vtable<Class>());
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vtable_p--;
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auto vtable = *vtable_p;
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return *vtable->pTypeDescriptor;
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}
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#endif //_WIN64
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#else
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template<typename Class, typename Lib, typename Storage>
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const std::type_info& load_type_info(Lib & lib, Storage & storage)
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{
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return lib.template get<const std::type_info>(storage.template get_type_info<Class>());
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}
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#endif
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}}}
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#endif /* BOOST_DLL_DETAIL_TYPE_INFO_HPP_ */
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