eqemu-server/libs/luabind/luabind/detail/convert_to_lua.hpp
2019-10-13 00:53:31 -07:00

93 lines
2.6 KiB
C++

// Copyright (c) 2003 Daniel Wallin and Arvid Norberg
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
// OR OTHER DEALINGS IN THE SOFTWARE.
#ifndef LUABIND_CONVERT_TO_LUA_HPP_INCLUDED
#define LUABIND_CONVERT_TO_LUA_HPP_INCLUDED
#include <luabind/config.hpp>
#include <luabind/detail/policy.hpp>
#include <boost/ref.hpp>
#include <boost/mpl/apply_wrap.hpp>
namespace luabind { namespace detail
{
template<bool IsReferenceWrapper = false>
struct unwrap_ref
{
template<class T>
static const T& get(const T& r) { return r; }
template<class T>
struct apply
{
typedef T type;
};
};
template<>
struct unwrap_ref<true>
{
template<class T>
static T& get(const boost::reference_wrapper<T>& r) { return r.get(); }
template<class T>
struct apply
{
typedef typename T::type& type;
};
};
namespace mpl = boost::mpl;
template<class T>
void convert_to_lua(lua_State* L, const T& v)
{
typedef typename mpl::apply_wrap1<
unwrap_ref<boost::is_reference_wrapper<T>::value>
, T
>::type value_type;
typename mpl::apply_wrap2<default_policy,value_type,cpp_to_lua>::type converter;
converter.apply(L, unwrap_ref<boost::is_reference_wrapper<T>::value>::get(v));
}
template<int Index, class T, class Policies>
void convert_to_lua_p(lua_State* L, const T& v, const Policies&)
{
typedef typename mpl::apply_wrap1<
unwrap_ref<boost::is_reference_wrapper<T>::value>
, T
>::type value_type;
typedef typename find_conversion_policy<Index, Policies>::type converter_policy;
typename mpl::apply_wrap2<converter_policy,value_type,cpp_to_lua>::type converter;
converter.apply(L, unwrap_ref<boost::is_reference_wrapper<T>::value>::get(v));
}
}}
#endif