unleashed-firmware/lib/callback-connector/callback-connector.h
hedger 4d6b170769
[FL-2520] FW build with -Wextra ()
* Fixing compiler warnings with -Wextra
* More warnings suppression, WIP
* Even more warning fixes
* Added new lines at end of text files.
* Padding fix
* Additional fixes to warnings on different build configurations; added -Wextra to default build pipeline
* Fixes for Secplus v1
* -additional warnings
* +-Wredundant-decls fixes
* FuriHal: print stack overflow task name in console
* FuriHal: add missing include

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
2022-05-06 16:37:10 +03:00

100 lines
3.2 KiB
C++

#ifndef CALLBACKCONNECTOR_H
#define CALLBACKCONNECTOR_H
#include <functional>
namespace cbc {
namespace Details {
template <std::size_t Tag, typename T, typename Ret, typename... Args> class FuncMemberWrapper {
public:
FuncMemberWrapper() = delete;
using member_fun_t = Ret (T::*)(Args...);
using const_member_fun_t = Ret (T::*)(Args...) const;
static auto instantiate(T* t, member_fun_t ptr) {
obj = t;
member = ptr;
return MetaCall;
}
static auto instantiate(T* t, const_member_fun_t ptr) {
obj = t;
const_member = ptr;
return ConstMetaCall;
}
private:
static auto MetaCall(Args... args) {
return (*obj.*member)(args...);
}
static auto ConstMetaCall(Args... args) {
return (*obj.*const_member)(args...);
}
static T* obj;
static member_fun_t member;
static const_member_fun_t const_member;
};
template <std::size_t Tag, typename T, typename Ret, typename... Args>
T* FuncMemberWrapper<Tag, T, Ret, Args...>::obj{};
template <std::size_t Tag, typename T, typename Ret, typename... Args>
typename FuncMemberWrapper<Tag, T, Ret, Args...>::member_fun_t
FuncMemberWrapper<Tag, T, Ret, Args...>::member{};
template <std::size_t Tag, typename T, typename Ret, typename... Args>
typename FuncMemberWrapper<Tag, T, Ret, Args...>::const_member_fun_t
FuncMemberWrapper<Tag, T, Ret, Args...>::const_member{};
template <typename Functor, typename Ret, typename... Args> struct FunctorWrapper {
public:
static std::function<Ret(Args...)> functor;
static auto instatiate(Functor fn) {
functor = std::move(fn);
return MetaCall;
}
private:
static auto MetaCall(Args... args) {
return functor(args...);
}
};
template <typename Functor, typename Ret, typename... Args>
std::function<Ret(Args...)> FunctorWrapper<Functor, Ret, Args...>::functor;
template <typename Functor, typename Ret, typename T, typename... Args>
auto deducer(Functor obj, Ret (T::*)(Args...) const) {
return FunctorWrapper<Functor, Ret, Args...>::instatiate(std::move(obj));
}
template <typename Functor, typename Ret, typename T, typename... Args>
auto deducer(Functor obj, Ret (T::*)(Args...)) {
return FunctorWrapper<Functor, Ret, Args...>::instatiate(std::move(obj));
}
template <std::size_t tag, typename T, typename Ret, typename... Args>
auto const_instantiate(T* t, Ret (T::*ptr)(Args...) const) {
return FuncMemberWrapper<tag, T, Ret, Args...>::instantiate(t, ptr);
}
template <std::size_t tag, typename T, typename Func> auto const_instantiate(T* t, Func ptr) {
return const_instantiate(t, ptr);
}
} //end of Details scope
template <std::size_t tag = 0, typename T, typename Ret, typename... Args>
auto obtain_connector(T* t, Ret (T::*ptr)(Args...)) {
return Details::FuncMemberWrapper<tag, T, Ret, Args...>::instantiate(t, ptr);
}
template <std::size_t tag = 0, typename T, typename Ret, typename... Args>
auto obtain_connector(T* t, Ret (T::*ptr)(Args...) const) {
return Details::FuncMemberWrapper<tag, T, Ret, Args...>::instantiate(t, ptr);
}
template <typename Functor> auto obtain_connector(Functor functor) {
return Details::deducer(std::move(functor), &Functor::operator());
}
} //end of cbc scope
#endif // CALLBACKCONNECTOR_H