dpp::detail Namespace Reference

Implementation details for internal use only. More...

Namespaces
	async
	coroutine
	event_router
	Internal cogwheels for dpp::event_router_t.
	job
	std_coroutine
	Alias for either std or std::experimental depending on compiler and library.
	task
	when_any
	Internal cogwheels for dpp::when_any.

Classes
struct	empty_tag_t
	Empty struct used for overload resolution. More...

Typedefs
template<typename T >
using	awaitable_result = decltype(co_await_resolve(std::declval< T >()).await_resume())
	Convenience alias for the result of a certain awaitable's await_resume. More...

Functions
decltype(auto)	co_await_resolve (auto &&expr)
	Mimics the compiler's behavior of using co_await. More...

Variables
template<typename T >
bool	has_await_members
	Concept to check if a type has useable await_ready(), await_suspend() and await_resume() member functions. More...
template<typename T >
bool	has_co_await_member
	Concept to check if a type has a useable operator co_await() member. More...
template<typename T >
bool	has_free_co_await
	Concept to check if a type has a useable overload of the free function operator co_await(expr) More...

Detailed Description

Implementation details for internal use only.

Attention

This is only meant to be used by D++ internally. Support will not be given regarding the facilities in this namespace.

Typedef Documentation

awaitable_result

template<typename T >

using dpp::detail::awaitable_result = typedef decltype(co_await_resolve(std::declval<T>()).await_resume())

Convenience alias for the result of a certain awaitable's await_resume.

Function Documentation

co_await_resolve()

decltype(auto) dpp::detail::co_await_resolve

(

auto &&

expr

)

Mimics the compiler's behavior of using co_await.

That is, it returns whichever works first, in order : expr.operator co_await(); > operator co_await(expr) > expr

This function is conditionally noexcept, if the returned expression also is.

Referenced by dpp::detail::task::promise_base::await_transform().

Here is the caller graph for this function:

Variable Documentation

has_await_members

template<typename T >

bool dpp::detail::has_await_members

Concept to check if a type has useable await_ready(), await_suspend() and await_resume() member functions.

Note

This is actually a C++20 concept but Doxygen doesn't do well with them

has_co_await_member

template<typename T >

bool dpp::detail::has_co_await_member

Concept to check if a type has a useable operator co_await() member.

Note

This is actually a C++20 concept but Doxygen doesn't do well with them

has_free_co_await

template<typename T >

bool dpp::detail::has_free_co_await

Concept to check if a type has a useable overload of the free function operator co_await(expr)

Note

This is actually a C++20 concept but Doxygen doesn't do well with them