eqemu-server/luabind/luabind/discard_result_policy.hpp
2013-05-11 01:29:58 -07:00

73 lines
2.1 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_DISCARD_RESULT_POLICY_HPP_INCLUDED
#define LUABIND_DISCARD_RESULT_POLICY_HPP_INCLUDED
#include <luabind/config.hpp>
#include <luabind/detail/policy.hpp>
namespace luabind { namespace detail
{
struct discard_converter
{
template<class T>
void apply(lua_State*, T) {}
};
struct discard_result_policy : conversion_policy<0>
{
static void precall(lua_State*, const index_map&) {}
static void postcall(lua_State*, const index_map&) {}
struct can_only_convert_from_cpp_to_lua {};
template<class T, class Direction>
struct apply
{
typedef typename boost::mpl::if_<boost::is_same<Direction, cpp_to_lua>
, discard_converter
, can_only_convert_from_cpp_to_lua
>::type type;
};
};
}}
namespace luabind
{
detail::policy_cons<
detail::discard_result_policy, detail::null_type> const discard_result = {};
namespace detail
{
inline void ignore_unused_discard_result()
{
(void)discard_result;
}
}
}
#endif // LUABIND_DISCARD_RESULT_POLICY_HPP_INCLUDED