Class WitOption

crates/c-api/include/wasmtime/component/val.hh:286–314

Class representing a component model `option` value.

/// Class representing a component model `option` value.
class WitOption {
  friend class Val;

  VAL_REPR(WitOption, wasmtime_component_val_t *);

  static void transfer(Raw &&from, Raw &to) {
    to = from;
    from = nullptr;
  }

  void copy(const Raw &other) {
    if (other) {
      wasmtime_component_val_t clone;
      wasmtime_component_val_clone(other, &clone);
      raw = wasmtime_component_val_new(&clone);
    } else {
      raw = nullptr;
    }
  }

  void destroy() { wasmtime_component_val_free(raw); }

public:
  /// Constructs a new option value with the provided value.
  explicit WitOption(std::optional<Val> val);

  /// Returns the optional payload value associated with this option.
  const Val *value() const { return detail::val_from_capi(raw); }
};

/// Class representing a component model `result` value.
class WitResult {