Method func_wrap

crates/c-api/include/wasmtime/linker.hh:149–167

            std::enable_if_t<WasmHostFunc<F>::Params::valid, bool> = true,
            std::enable_if_t<WasmHostFunc<F>::Results::valid, bool> = true>
  Result<std::monostate> func_wrap(std::string_view module,
                                   std::string_view name, F &&f) {
    using HostFunc = WasmHostFunc<F>;
    auto params = HostFunc::Params::types();
    auto results = HostFunc::Results::types();
    auto ty = FuncType::from_iters(params, results);
    auto *error = wasmtime_linker_define_func_unchecked(
        ptr.get(), module.data(), module.length(), name.data(), name.length(),
        ty.ptr.get(), Func::raw_callback_unchecked<std::remove_reference_t<F>>,
        std::make_unique<std::remove_reference_t<F>>(std::forward<F>(f))
            .release(),
        Func::raw_finalize<std::remove_reference_t<F>>);

    if (error != nullptr) {
      return Error(error);
    }

    return std::monostate();
  }

  /// Loads the "default" function, according to WASI commands and reactors, of
  /// the module named `name` in this linker.