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delegate: cleanup

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This commit is contained in:
Michele Caini
2024-06-21 09:30:42 +02:00
parent 9ec6f050c4
commit b7c3cb267c
1 changed files with 8 additions and 23 deletions
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31
src/entt/signal/delegate.hpp
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@@ -68,43 +68,28 @@ class delegate<Ret(Args...)> {
[[nodiscard]] auto wrap(std::index_sequence<Index...>) noexcept {
return [](const void *, Args... args) -> Ret {
[[maybe_unused]] const auto arguments = std::forward_as_tuple(std::forward<Args>(args)...);
if constexpr(std::is_invocable_r_v<Ret, decltype(Candidate), type_list_element_t<Index, type_list<Args...>>...>) {
return static_cast<Ret>(std::invoke(Candidate, std::forward<type_list_element_t<Index, type_list<Args...>>>(std::get<Index>(arguments))...));
} else {
constexpr auto offset = sizeof...(Args) - sizeof...(Index);
return static_cast<Ret>(std::invoke(Candidate, std::forward<type_list_element_t<Index + offset, type_list<Args...>>>(std::get<Index + offset>(arguments))...));
}
constexpr auto offset = !std::is_invocable_r_v<Ret, decltype(Candidate), type_list_element_t<Index, type_list<Args...>>...> * (sizeof...(Args) - sizeof...(Index));
return static_cast<Ret>(std::invoke(Candidate, std::forward<type_list_element_t<Index + offset, type_list<Args...>>>(std::get<Index + offset>(arguments))...));
};
}
template<auto Candidate, typename Type, std::size_t... Index>
[[nodiscard]] auto wrap(Type &, std::index_sequence<Index...>) noexcept {
return [](const void *payload, Args... args) -> Ret {
[[maybe_unused]] const auto arguments = std::forward_as_tuple(std::forward<Args>(args)...);
Type *curr = static_cast<Type *>(const_cast<constness_as_t<void, Type> *>(payload));
if constexpr(std::is_invocable_r_v<Ret, decltype(Candidate), Type &, type_list_element_t<Index, type_list<Args...>>...>) {
return static_cast<Ret>(std::invoke(Candidate, *curr, std::forward<type_list_element_t<Index, type_list<Args...>>>(std::get<Index>(arguments))...));
} else {
constexpr auto offset = sizeof...(Args) - sizeof...(Index);
return static_cast<Ret>(std::invoke(Candidate, *curr, std::forward<type_list_element_t<Index + offset, type_list<Args...>>>(std::get<Index + offset>(arguments))...));
}
[[maybe_unused]] const auto arguments = std::forward_as_tuple(std::forward<Args>(args)...);
constexpr auto offset = !std::is_invocable_r_v<Ret, decltype(Candidate), Type &, type_list_element_t<Index, type_list<Args...>>...> * (sizeof...(Args) - sizeof...(Index));
return static_cast<Ret>(std::invoke(Candidate, *curr, std::forward<type_list_element_t<Index + offset, type_list<Args...>>>(std::get<Index + offset>(arguments))...));
};
}
template<auto Candidate, typename Type, std::size_t... Index>
[[nodiscard]] auto wrap(Type *, std::index_sequence<Index...>) noexcept {
return [](const void *payload, Args... args) -> Ret {
[[maybe_unused]] const auto arguments = std::forward_as_tuple(std::forward<Args>(args)...);
Type *curr = static_cast<Type *>(const_cast<constness_as_t<void, Type> *>(payload));
if constexpr(std::is_invocable_r_v<Ret, decltype(Candidate), Type *, type_list_element_t<Index, type_list<Args...>>...>) {
return static_cast<Ret>(std::invoke(Candidate, curr, std::forward<type_list_element_t<Index, type_list<Args...>>>(std::get<Index>(arguments))...));
} else {
constexpr auto offset = sizeof...(Args) - sizeof...(Index);
return static_cast<Ret>(std::invoke(Candidate, curr, std::forward<type_list_element_t<Index + offset, type_list<Args...>>>(std::get<Index + offset>(arguments))...));
}
[[maybe_unused]] const auto arguments = std::forward_as_tuple(std::forward<Args>(args)...);
constexpr auto offset = !std::is_invocable_r_v<Ret, decltype(Candidate), Type *, type_list_element_t<Index, type_list<Args...>>...> * (sizeof...(Args) - sizeof...(Index));
return static_cast<Ret>(std::invoke(Candidate, curr, std::forward<type_list_element_t<Index + offset, type_list<Args...>>>(std::get<Index + offset>(arguments))...));
};
}