completion_signatures.hpp

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#ifndef KOKKOS_EXECUTION_IMPL_COMPLETION_SIGNATURES_HPP
#define KOKKOS_EXECUTION_IMPL_COMPLETION_SIGNATURES_HPP
 
#include "exec/completion_signatures.hpp"
#include "stdexec/execution.hpp"
 
namespace Kokkos::Execution::Impl {
 // NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
#define KOKKOS_EXECUTION_COMPL_SIGS_ADD(_sndr_type_, ...)                                                              \
    template <::stdexec::__decays_to<_sndr_type_> Self, typename... Env>                                               \
    static consteval auto get_completion_signatures() {                                                                \
        using child_completions_t =                                                                                    \
            ::stdexec::__completion_signatures_of_t<::stdexec::__copy_cvref_t<Self, Sndr>, Env...>;                    \
        constexpr auto success_completion_count =                                                                      \
            ::stdexec::__msize_t<::stdexec::__detail::__count_of<::stdexec::set_value_t, child_completions_t>>::value; \
        if constexpr (success_completion_count > 0) {                                                                  \
            return experimental::execution::transform_completion_signatures(                                           \
                child_completions_t{},                                                                                 \
                experimental::execution::keep_completion<stdexec::set_value_t>(),                                      \
                experimental::execution::ignore_completion(),                                                          \
                experimental::execution::ignore_completion(),                                                          \
                stdexec::completion_signatures<__VA_ARGS__>());                                                        \
        } else {                                                                                                       \
            return child_completions_t{};                                                                              \
        }                                                                                                              \
    }
 
// NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
#define KOKKOS_EXECUTION_COMPL_SIGS_KEEP(_sndr_type_)                                                                  \
    template <::stdexec::__decays_to<_sndr_type_> Self, typename... Env>                                               \
    static consteval auto get_completion_signatures() {                                                                \
        return ::stdexec::__completion_signatures_of_t<::stdexec::__copy_cvref_t<Self, Sndr>, Env...>{};               \
    }
 
} // namespace Kokkos::Execution::Impl
 
#endif // KOKKOS_EXECUTION_IMPL_COMPLETION_SIGNATURES_HPP