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// sol3
// The MIT License (MIT)
// Copyright (c) 2013-2019 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 {
#ifndef __clang__
// constexpr is fine for not-clang
namespace detail {
template <typename R, typename... Args, typename F, typename = std::result_of_t<meta::unqualified_t<F>(Args...)>>
inline constexpr 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 constexpr 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 constexpr 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 constexpr 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 constexpr 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 constexpr Sig C::*resolve_v(std::false_type, Sig C::*mem_func_ptr) {
return mem_func_ptr;
}
template <typename Sig, typename C>
inline constexpr Sig C::*resolve_v(std::true_type, Sig C::*mem_variable_ptr) {
return mem_variable_ptr;
}
} // namespace detail
template <typename... Args, typename R>
inline constexpr auto resolve(R fun_ptr(Args...)) -> R (*)(Args...) {
return fun_ptr;
}
template <typename Sig>
inline constexpr Sig* resolve(Sig* fun_ptr) {
return fun_ptr;
}
template <typename... Args, typename R, typename C>
inline constexpr auto resolve(R (C::*mem_ptr)(Args...)) -> R (C::*)(Args...) {
return mem_ptr;
}
template <typename Sig, typename C>
inline constexpr 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, meta::disable<std::is_function<meta::unqualified_t<F>>> = meta::enabler>
inline constexpr auto resolve(F&& f) -> decltype(detail::resolve_i(types<Sig...>(), std::forward<F>(f))) {
return detail::resolve_i(types<Sig...>(), std::forward<F>(f));
}
#else
// Clang has distinct problems with constexpr arguments,
// so don't use the constexpr versions inside of clang.
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;
}
} // namespace 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));
}
#endif
} // namespace sol
#endif // SOL_RESOLVE_HPP
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