54 lines
2.1 KiB
C++
54 lines
2.1 KiB
C++
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// Copyright satoren
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#pragma once
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#include "kaguya/config.hpp"
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#include "kaguya/traits.hpp"
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namespace kaguya {
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#if KAGUYA_USE_CPP11
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namespace detail {
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template <std::size_t... indexes> struct index_tuple {};
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template <std::size_t first, std::size_t last, class result = index_tuple<>,
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bool flag = first >= last>
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struct index_range {
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using type = result;
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};
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template <std::size_t step, std::size_t last, std::size_t... indexes>
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struct index_range<step, last, index_tuple<indexes...>, false>
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: index_range<step + 1, last, index_tuple<indexes..., step> > {};
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template <std::size_t... Indexes, class... Args>
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int push_tuple(lua_State *l, index_tuple<Indexes...>, std::tuple<Args...> &&v) {
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return util::push_args(l, std::get<Indexes>(v)...);
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}
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}
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/// @ingroup lua_type_traits
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/// @brief lua_type_traits for std::tuple or boost::tuple
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template <class... Args> struct lua_type_traits<standard::tuple<Args...> > {
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static int push(lua_State *l, std::tuple<Args...> &&v) {
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typename detail::index_range<0, sizeof...(Args)>::type index;
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return detail::push_tuple(l, index, std::forward<std::tuple<Args...> >(v));
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}
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};
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#else
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#define KAGUYA_PP_GET_DATA(N) standard::get<N - 1>(v)
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#define KAGUYA_PUSH_TUPLE_DEF(N) \
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template <KAGUYA_PP_TEMPLATE_DEF_REPEAT(N)> \
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struct lua_type_traits<standard::tuple<KAGUYA_PP_TEMPLATE_ARG_REPEAT(N)> > { \
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static int \
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push(lua_State *l, \
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const standard::tuple<KAGUYA_PP_TEMPLATE_ARG_REPEAT(N)> &v) { \
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return util::push_args(l, KAGUYA_PP_REPEAT_ARG(N, KAGUYA_PP_GET_DATA)); \
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} \
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};
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KAGUYA_PP_REPEAT_DEF(KAGUYA_FUNCTION_MAX_TUPLE_SIZE, KAGUYA_PUSH_TUPLE_DEF)
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#undef KAGUYA_PP_GET_DATA
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#undef KAGUYA_PUSH_TUPLE_DEF
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#endif
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}
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