| namespace mamba | |
| { | |
| template <typename Func, typename... Args> | |
| auto safe_invoke(Func&& func, Args&&... args) | |
| -> tl::expected<decltype(std::invoke(std::forward<Func>(func), std::forward<Args>(args)...)), mamba_error> | |
| { | |
| try | |
| { | |
| // If the callable is passed by being moved-in (r-value reference/temporary etc.) | |
| // we make sure that the lifetime of that callable doesnt go beyond this block. | |
| auto call = [&, callable = std::forward<Func>(func)] | |
| { return std::invoke(callable, std::forward<Args>(args)...); }; | |
| using Result = decltype(call()); | |
| if constexpr (std::is_void<Result>::value) | |
| { | |
| call(); | |
| return {}; | |
| } | |
| else | |
| { | |
| return call(); | |
| } | |
| } | |
| catch (const std::runtime_error& err) | |
| { | |
| return make_unexpected( | |
| std::string("callback invocation failed : ") + err.what(), | |
| mamba_error_code::unknown | |
| ); | |
| } | |
| catch (...) | |
| { | |
| return make_unexpected( | |
| "callback invocation failed : unknown error", | |
| mamba_error_code::unknown | |
| ); | |
| } | |
| } | |
| } | |