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https://github.com/ThePhD/sol2.git
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102 lines
3.6 KiB
C++
102 lines
3.6 KiB
C++
// The MIT License (MIT)
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// Copyright (c) 2013 Danny Y., Rapptz
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#include "tuple.hpp"
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#ifndef SOL_FUNCTIONAL_HPP
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#define SOL_FUNCTIONAL_HPP
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namespace sol {
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namespace detail {
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template<typename TFuncSignature>
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struct function_traits;
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template<typename T, typename R, typename... Tn>
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struct function_traits<R( T::* )( Tn... )> {
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static const std::size_t arity = sizeof...( Tn );
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static const bool is_member_function = true;
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typedef std::tuple<Tn...> arg_tuple_t;
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typedef types<Tn...> args_t;
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typedef R( T::* func_t )( Tn... );
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typedef R( T::* func_pointer_t )( Tn... );
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typedef R return_t;
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template <std::size_t i>
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using arg_n = std::tuple_element<i, arg_tuple_t>;
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};
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template<typename T, typename R, typename... Tn>
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struct function_traits<R( T::* )( Tn... ) const> {
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static const std::size_t arity = sizeof...( Tn );
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static const bool is_member_function = true;
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typedef std::tuple<Tn...> arg_tuple_t;
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typedef types<Tn...> args_t;
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typedef R( T::* func_t )( Tn... );
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typedef R( T::* func_pointer_t )( Tn... );
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typedef R return_t;
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template <std::size_t i>
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using arg_n = std::tuple_element<i, arg_tuple_t>;
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};
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template<typename R, typename... Tn>
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struct function_traits<R( Tn... )> {
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static const std::size_t arity = sizeof...( Tn );
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static const bool is_member_function = false;
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typedef std::tuple<Tn...> arg_tuple_t;
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typedef types<Tn...> args_t;
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typedef R( func_t )( Tn... );
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typedef R( *func_pointer_t )( Tn... );
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typedef R return_t;
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template <std::size_t i>
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using arg_n = std::tuple_element<i, arg_tuple_t>;
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};
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template<typename R, typename... Tn>
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struct function_traits<R( *)( Tn... )> {
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static const std::size_t arity = sizeof...( Tn );
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static const bool is_member_function = false;
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typedef std::tuple<Tn...> arg_tuple_t;
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typedef types<Tn...> args_t;
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typedef R( func_t )( Tn... );
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typedef R( *func_pointer_t )( Tn... );
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typedef R return_t;
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template <std::size_t i>
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using arg_n = std::tuple_element<i, arg_tuple_t>;
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};
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using std::get;
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template<typename Function, typename Tuple, size_t... Indices>
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inline auto call( Function f, const Tuple& t, indices<Indices...> ) -> decltype( f( get<Indices>( t )... ) ) {
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return f( get<Indices>( t )... );
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}
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} // detail
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template<typename Function, typename... Args>
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inline auto call( Function f, const std::tuple<Args...>& t ) -> decltype( detail::call( f, t, detail::build_indices<sizeof...( Args )>{} ) ) {
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return call( f, t, detail::build_indices<sizeof...( Args )>{} );
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}
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} // sol
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#endif // SOL_FUNCTIONAL_HPP
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