[coroutine.handle.noop] (original) (raw)

17 Language support library [support]

17.12 Coroutines [support.coroutine]

17.12.5 No-op coroutines [coroutine.noop]

17.12.5.2 Class coroutine_­handle<noop_­coroutine_­promise> [coroutine.handle.noop]

namespace std { template<> struct coroutine_handle<noop_coroutine_promise> : coroutine_handle<> { constexpr explicit operator bool() const noexcept;constexpr bool done() const noexcept;constexpr void operator()() const noexcept;constexpr void resume() const noexcept;constexpr void destroy() const noexcept; noop_coroutine_promise& promise() const noexcept;constexpr void* address() const noexcept;private: coroutine_handle(unspecified);};}

17.12.5.2.2 Resumption [coroutine.handle.noop.resumption]

constexpr void operator()() const noexcept;constexpr void resume() const noexcept;constexpr void destroy() const noexcept;

Remarks: If noop_­coroutine_­handle is converted to coroutine_­handle<>, calls to operator(), resume and destroy on that handle will also have no observable effects.

17.12.5.2.3 Promise access [coroutine.handle.noop.promise]

noop_coroutine_promise& promise() const noexcept;

Returns: A reference to the promise object associated with this coroutine handle.