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43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
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#pragma once
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#include "../meta/meta.hpp"
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namespace geode::core {
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namespace impl {
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/* the handler itself */
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template <auto& Det, class Ret, class ...Args>
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Ret handler(Args... args) {
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static thread_local int counter = 0;
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if constexpr (std::is_same_v<Ret, void>) {
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if (counter == (int)Det->size()) counter = 0;
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Det->at(counter++)(args...);
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if (--counter < 0) counter = Det->size() - 1;
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}
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else {
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if (counter == (int)Det->size()) counter = 0;
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Ret ret = Det->at(counter++)(args...);
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if (--counter < 0) counter = Det->size() - 1;
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return ret;
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}
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}
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template <template <class, class...> class Conv, auto& Func, class Ret, class ...Args>
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Ret trampoline(Args... args) {
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return meta::Function<Ret(Args...), Conv>(Func)(args...);
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}
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}
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template <template <class, class...> class Conv, auto& Det, class Ret, class ...Args>
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static constexpr inline auto handler = Conv<Ret, Args...>::template get_wrapper<&impl::handler<Det, Ret, Args...>>();
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template <template <class, class...> class Conv, auto& Det, class Ret, class ...Args>
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static constexpr inline auto trampoline = &impl::trampoline<Conv, Det, Ret, Args...>;
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}
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