text: // The MIT License (MIT) 
  
  // Copyright (c) 2013-2016 Rapptz, ThePhD and contributors
  
  // 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 SOL_RESOLVE_HPP
  #define SOL_RESOLVE_HPP
  
  #include "traits.hpp"
  #include "tuple.hpp"
  
  namespace sol {
  	namespace detail {
  		template<typename R, typename... Args, typename F, typename = std::result_of_t<meta::unqualified_t<F>(Args...)>>
  		inline auto resolve_i(types<R(Args...)>, F&&)->R(meta::unqualified_t<F>::*)(Args...) {
  			using Sig = R(Args...);
  			typedef meta::unqualified_t<F> Fu;
  			return static_cast<Sig Fu::*>(&Fu::operator());
  		}
  
  		template<typename F, typename U = meta::unqualified_t<F>>
  		inline auto resolve_f(std::true_type, F&& f)
  			-> decltype(resolve_i(types<meta::function_signature_t<decltype(&U::operator())>>(), std::forward<F>(f))) {
  			return resolve_i(types<meta::function_signature_t<decltype(&U::operator())>>(), std::forward<F>(f));
  		}
  
  		template<typename F>
  		inline void resolve_f(std::false_type, F&&) {
  			static_assert(meta::has_deducible_signature<F>::value,
  				"Cannot use no-template-parameter call with an overloaded functor: specify the signature");
  		}
  
  		template<typename F, typename U = meta::unqualified_t<F>>
  		inline auto resolve_i(types<>, F&& f) -> decltype(resolve_f(meta::has_deducible_signature<U>(), std::forward<F>(f))) {
  			return resolve_f(meta::has_deducible_signature<U> {}, std::forward<F>(f));
  		}
  
  		template<typename... Args, typename F, typename R = std::result_of_t<F&(Args...)>>
  		inline auto resolve_i(types<Args...>, F&& f) -> decltype(resolve_i(types<R(Args...)>(), std::forward<F>(f))) {
  			return resolve_i(types<R(Args...)>(), std::forward<F>(f));
  		}
  
  		template<typename Sig, typename C>
  		inline Sig C::* resolve_v(std::false_type, Sig C::* mem_func_ptr) {
  			return mem_func_ptr;
  		}
  
  		template<typename Sig, typename C>
  		inline Sig C::* resolve_v(std::true_type, Sig C::* mem_variable_ptr) {
  			return mem_variable_ptr;
  		}
  	} // detail
  
  	template<typename... Args, typename R>
  	inline auto resolve(R fun_ptr(Args...))->R(*)(Args...) {
  		return fun_ptr;
  	}
  
  	template<typename Sig>
  	inline Sig* resolve(Sig* fun_ptr) {
  		return fun_ptr;
  	}
  
  	template<typename... Args, typename R, typename C>
  	inline auto resolve(R(C::*mem_ptr)(Args...))->R(C::*)(Args...) {
  		return mem_ptr;
  	}
  
  	template<typename Sig, typename C>
  	inline Sig C::* resolve(Sig C::* mem_ptr) {
  		return detail::resolve_v(std::is_member_object_pointer<Sig C::*>(), mem_ptr);
  	}
  
  	template<typename... Sig, typename F>
  	inline auto resolve(F&& f) -> decltype(detail::resolve_i(types<Sig...>(), std::forward<F>(f))) {
  		return detail::resolve_i(types<Sig...>(), std::forward<F>(f));
  	}
  } // sol
  
  #endif // SOL_RESOLVE_HPP
  