Class coroutine_handle_functor

source/task.cpp:17–46

namespace concurrencpp::details {
    namespace {
        class coroutine_handle_functor {

           private:
            coroutine_handle<void> m_coro_handle;

           public:
            coroutine_handle_functor() noexcept : m_coro_handle() {}

            coroutine_handle_functor(const coroutine_handle_functor&) = delete;
            coroutine_handle_functor& operator=(const coroutine_handle_functor&) = delete;

            coroutine_handle_functor(coroutine_handle<void> coro_handle) noexcept : m_coro_handle(coro_handle) {}

            coroutine_handle_functor(coroutine_handle_functor&& rhs) noexcept : m_coro_handle(std::exchange(rhs.m_coro_handle, {})) {}

            ~coroutine_handle_functor() noexcept {
                if (static_cast<bool>(m_coro_handle)) {
                    m_coro_handle.destroy();
                }
            }

            void execute_destroy() noexcept {
                auto coro_handle = std::exchange(m_coro_handle, {});
                coro_handle();
            }

            void operator()() noexcept {
                execute_destroy();
            }
        };
    }  // namespace

}  // namespace concurrencpp::details