30   Error(const std::string &s) : ptr(wasmtime_error_new(s.c_str())) {}  in Error()
33   std::string message() const {  in message()
36     auto ret = std::string(msg_bytes.data, msg_bytes.size);  in message()
43   std::optional<int32_t> i32_exit() const {  in i32_exit()
48     return std::nullopt;  in i32_exit()
58 inline std::ostream &operator<<(std::ostream &os, const Error &e) {  in operator <<()
71   std::variant<T, E> data;
75   Result(T t) : data(std::move(t)) {}  in Result()
77   Result(E e) : data(std::move(e)) {}  in Result()
84   E &&err() { return std::get<E>(std::move(data)); }  in err()
86   const E &&err() const { return std::get<E>(std::move(data)); }  in err()
89   T &&ok() { return std::get<T>(std::move(data)); }  in ok()
91   const T &&ok() const { return std::get<T>(std::move(data)); }  in ok()
94   T &ok_ref() { return std::get<T>(data); }  in ok_ref()
96   const T &ok_ref() const { return std::get<T>(data); }  in ok_ref()
99   E &err_ref() { return std::get<T>(data); }  in err_ref()
101   const E &err_ref() const { return std::get<T>(data); }  in err_ref()
114     std::abort();  in unwrap_failed()