48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
#ifndef RFL_INTERNAL_TO_FLATTENED_PTR_TUPLE_HPP_
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#define RFL_INTERNAL_TO_FLATTENED_PTR_TUPLE_HPP_
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#include <tuple>
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#include "has_flatten_fields.hpp"
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#include "is_flatten_field.hpp"
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#include "to_ptr_tuple.hpp"
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namespace rfl {
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namespace internal {
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template <class PtrTuple, class... Args>
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auto flatten_ptr_tuple(PtrTuple&& _t, Args... _args) {
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constexpr auto i = sizeof...(Args);
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if constexpr (i == 0 && !has_flatten_fields<PtrTuple>()) {
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return std::forward<PtrTuple>(_t);
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} else if constexpr (i ==
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std::tuple_size_v<std::remove_cvref_t<PtrTuple>>) {
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return std::tuple_cat(std::forward<Args>(_args)...);
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} else {
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using T = std::tuple_element_t<i, std::remove_cvref_t<PtrTuple>>;
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if constexpr (is_flatten_field_v<T>) {
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return flatten_ptr_tuple(
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std::forward<PtrTuple>(_t),
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std::forward<Args>(_args)...,
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flatten_ptr_tuple(to_ptr_tuple(std::get<i>(_t)->get()))
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);
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} else {
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return flatten_ptr_tuple(
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std::forward<PtrTuple>(_t),
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std::forward<Args>(_args)...,
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std::make_tuple(std::get<i>(_t))
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);
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}
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}
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}
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template <class T>
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auto to_flattened_ptr_tuple(T&& _t) {
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return flatten_ptr_tuple(to_ptr_tuple(_t));
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}
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} // namespace internal
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} // namespace rfl
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#endif
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