tt::detail::observable_proxy< T, Constant > Struct Template Reference

#include <ttauri/observable.hpp>

Public Types
enum class	state_type : uint8_t { read , write , modified }
using	value_type = T

Public Member Functions
	observable_proxy (observable_impl< T > &actual)
	observable_proxy (observable_proxy &&)=delete
	observable_proxy (observable_proxy const &)=delete
void	prepare (state_type new_state) const noexcept
	operator value_type () const noexcept
	operator value_type & () const noexcept
	operator value_type const & () const noexcept
observable_proxy &	operator= (observable_proxy &&other) noexcept
	Copy the value from a temporary proxy.
observable_proxy &	operator= (observable_proxy const &other) noexcept
	Copy the value from a proxy.
template<typename Arg = value_type> requires (is_variable and not is_atomic and not std::is_same_v<std::remove_cvref_t<Arg>, observable_proxy>)
observable_proxy &	operator= (Arg &&arg) noexcept
template<typename Arg = value_type> requires (is_variable and is_atomic and not std::is_same_v<std::remove_cvref_t<Arg>, observable_proxy>)
observable_proxy &	operator= (Arg &&arg) noexcept
value_type	operator* () const noexcept
value_type const &	operator* () const noexcept
value_type &	operator* () const noexcept
value_type const *	operator-> () const noexcept
value_type *	operator-> () const noexcept
template<typename... Args>
decltype(auto)	operator() (Args &&...args) const noexcept
template<typename Arg > requires (is_variable and not is_atomic)
decltype(auto)	operator[] (Arg &&arg) const noexcept
template<typename Arg > requires (is_constant and not is_atomic)
decltype(auto)	operator[] (Arg &&arg) const noexcept

Data Fields
observable_impl< value_type > *	_actual = nullptr
value_type	_original
state_type	_state = state_type::none

Static Public Attributes
static constexpr bool	is_atomic = std::is_scalar_v<T>
static constexpr bool	is_constant = Constant
static constexpr bool	is_variable = not Constant

Detailed Description

template<typename T, bool Constant>
struct tt::detail::observable_proxy< T, Constant >

A proxy to the shared-value inside an observable.

This proxy object makes sure that updates to a value is atomic and that modifications causes notifications to be sent.

Template Parameters

T	The type of the observed value.
Constant	True when there is read-only access to the value. False if there is read-write access.

Member Function Documentation

operator=() [1/2]

template<typename T , bool Constant>

observable_proxy & tt::detail::observable_proxy< T, Constant >::operator= ( observable_proxy< T, Constant > && other )

inlinenoexcept

Copy the value from a temporary proxy.

operator=() [2/2]

template<typename T , bool Constant>

observable_proxy & tt::detail::observable_proxy< T, Constant >::operator= ( observable_proxy< T, Constant > const & other )

inlinenoexcept

Copy the value from a proxy.

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The documentation for this struct was generated from the following file:

• hikogui/src/ttauri/observable.hpp