esphome::TemplatableFn< T, X > Class Template Reference

Function-pointer-only templatable storage (4 bytes on 32-bit). More...

#include <automation.h>

Public Member Functions
	TemplatableFn ()=default
	TemplatableFn (std::nullptr_t)=delete
template<typename F > requires std::convertible_to<F, T (*)(X...)>
	TemplatableFn (F f)
template<typename F > requires (!std::convertible_to<F, T (*)(X...)>) && std::invocable<F, X...> &&std::convertible_to<std::invoke_result_t<F, X...>, T> &&std::is_empty_v<F> &&std::default_initializable<F>
	TemplatableFn (F)
template<typename F > requires std::invocable<F, X...> && (!std::convertible_to<F, T (*)(X...)>) &&(!std::is_empty_v<F> || !std::convertible_to<std::invoke_result_t<F, X...>, T> || !std::default_initializable<F>)
	TemplatableFn (F)=delete
bool	has_value () const
T	value (X... x) const
optional< T >	optional_value (X... x) const
T	value_or (X... x, T default_value) const

Protected Attributes
T(*	f_ )(X...)

Detailed Description

template<typename T, typename... X>
class esphome::TemplatableFn< T, X >

Function-pointer-only templatable storage (4 bytes on 32-bit).

Used by the TEMPLATABLE_VALUE macro for codegen-managed fields. Codegen wraps constants in stateless lambdas so only a function pointer is needed.

Definition at line 40 of file automation.h.

Constructor & Destructor Documentation

TemplatableFn() [1/5]

template<typename T , typename... X>

esphome::TemplatableFn< T, X >::TemplatableFn ( )

default

TemplatableFn() [2/5]

template<typename T , typename... X>

esphome::TemplatableFn< T, X >::TemplatableFn ( std::nullptr_t )

delete

TemplatableFn() [3/5]

template<typename T , typename... X>

template<typename F >
requires std::convertible_to<F, T (*)(X...)>

esphome::TemplatableFn< T, X >::TemplatableFn ( F f )

inline

Definition at line 46 of file automation.h.

TemplatableFn() [4/5]

template<typename T , typename... X>

template<typename F >
requires (!std::convertible_to<F, T (*)(X...)>) && std::invocable<F, X...> &&std::convertible_to<std::invoke_result_t<F, X...>, T> &&std::is_empty_v<F> &&std::default_initializable<F>

esphome::TemplatableFn< T, X >::TemplatableFn ( F )

inline

Definition at line 54 of file automation.h.

TemplatableFn() [5/5]

template<typename T , typename... X>

template<typename F >
requires std::invocable<F, X...> && (!std::convertible_to<F, T (*)(X...)>) &&(!std::is_empty_v<F> || !std::convertible_to<std::invoke_result_t<F, X...>, T> || !std::default_initializable<F>)

esphome::TemplatableFn< T, X >::TemplatableFn ( F )

delete

Member Function Documentation

has_value()

template<typename T , typename... X>

bool esphome::TemplatableFn< T, X >::has_value ( ) const

inline

Definition at line 65 of file automation.h.

optional_value()

template<typename T , typename... X>

optional< T > esphome::TemplatableFn< T, X >::optional_value ( X... x ) const

inline

Definition at line 69 of file automation.h.

value()

template<typename T , typename... X>

T esphome::TemplatableFn< T, X >::value ( X... x ) const

inline

Definition at line 67 of file automation.h.

value_or()

template<typename T , typename... X>

T esphome::TemplatableFn< T, X >::value_or ( X... x, T default_value ) const

inline

Definition at line 75 of file automation.h.

Field Documentation

f_

template<typename T , typename... X>

T(* esphome::TemplatableFn< T, X >::f_) (X...)

inlineprotected

Definition at line 78 of file automation.h.

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

• esphome/core/automation.h