C++ (Cpp) g_callable_info_may_return_null Examples

Example #1

File: rb-gi-argument.c Project: Mazwak/ruby-gnome2

VALUE
rb_gi_return_argument_to_ruby(GIArgument *argument,
                              GICallableInfo *callable_info)
{
    gboolean may_return_null;
    GITypeInfo return_value_info;

    may_return_null = g_callable_info_may_return_null(callable_info);
    if (may_return_null && !argument->v_pointer) {
        return Qnil;
    }

    g_callable_info_load_return_type(callable_info, &return_value_info);
    return rb_gi_argument_to_ruby(argument, &return_value_info);
}

Example #2

File: peas-extension-gjs.c Project: OBERTANK/libpeas

static gboolean
set_out_arg (JSContext      *js_context,
             GIFunctionInfo *func_info,
             gboolean        is_return_value,
             GIArgInfo      *arg_info,
             GITypeInfo     *type_info,
             gpointer        ptr,
             jsval           js_value)
{
  gboolean nullable;
  GITransfer transfer;
  GIArgument argument;
  GjsArgumentType arg_type;

  if (is_return_value)
    {
      arg_type = GJS_ARGUMENT_RETURN_VALUE;
      nullable = g_callable_info_may_return_null (func_info);
      transfer = g_callable_info_get_caller_owns (func_info);
    }
  else
    {
      arg_type = GJS_ARGUMENT_ARGUMENT;
      nullable = g_arg_info_may_be_null (arg_info);
      transfer = g_arg_info_get_ownership_transfer (arg_info);
    }

  if (!gjs_value_to_g_argument (js_context, js_value, type_info, NULL,
                                arg_type, transfer, nullable, &argument))
    {
      if (is_return_value)
        {
          g_warning ("Error failed to convert return value to GIArgument");
        }
      else
        {
          g_warning ("Error failed to convert OUT argument '%s' from "
                     "jsval to GIArgument", g_base_info_get_name (arg_info));
        }

      return FALSE;
    }

  peas_gi_argument_to_pointer (type_info, &argument, ptr);

  return TRUE;
}