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Code Issues Releases Wiki Activity

Move TemplatableValue helper class to automation.h (#2511)

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This commit is contained in:
Oxan van Leeuwen
2021-10-15 22:05:11 +02:00
committed by GitHub
parent 653a3d5d11
commit c82d5d63e3
3 changed files with 58 additions and 65 deletions
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57
esphome/core/helpers.h
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@@ -255,63 +255,6 @@ struct is_callable // NOLINT
static constexpr auto value = decltype(test<T>(nullptr))::value; // NOLINT
};
template<typename T, typename... X> class TemplatableValue {
public:
TemplatableValue() : type_(EMPTY) {}
template<typename F, enable_if_t<!is_callable<F, X...>::value, int> = 0>
TemplatableValue(F value) : type_(VALUE), value_(value) {}
template<typename F, enable_if_t<is_callable<F, X...>::value, int> = 0>
TemplatableValue(F f) : type_(LAMBDA), f_(f) {}
bool has_value() { return this->type_ != EMPTY; }
T value(X... x) {
if (this->type_ == LAMBDA) {
return this->f_(x...);
}
// return value also when empty
return this->value_;
}
optional<T> optional_value(X... x) {
if (!this->has_value()) {
return {};
}
return this->value(x...);
}
T value_or(X... x, T default_value) {
if (!this->has_value()) {
return default_value;
}
return this->value(x...);
}
protected:
enum {
EMPTY,
VALUE,
LAMBDA,
} type_;
T value_{};
std::function<T(X...)> f_{};
};
template<typename... X> class TemplatableStringValue : public TemplatableValue<std::string, X...> {
public:
TemplatableStringValue() : TemplatableValue<std::string, X...>() {}
template<typename F, enable_if_t<!is_callable<F, X...>::value, int> = 0>
TemplatableStringValue(F value) : TemplatableValue<std::string, X...>(value) {}
template<typename F, enable_if_t<is_callable<F, X...>::value, int> = 0>
TemplatableStringValue(F f)
: TemplatableValue<std::string, X...>([f](X... x) -> std::string { return to_string(f(x...)); }) {}
};
void delay_microseconds_accurate(uint32_t usec);
template<typename T> class Deduplicator {