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;
}
static void
handle_method_impl (ffi_cif *cif,
gpointer result,
gpointer *args,
gpointer data)
{
MethodImpl *impl = (MethodImpl *) data;
GIArgInfo arg_info;
GITypeInfo type_info;
GITypeInfo return_type_info;
gint n_args, i;
PeasExtensionWrapper *instance;
GIArgument *arguments;
GIArgument return_value;
gboolean success;
instance = *((PeasExtensionWrapper **) args[0]);
g_assert (PEAS_IS_EXTENSION_WRAPPER (instance));
n_args = g_callable_info_get_n_args (impl->invoker_info);
g_return_if_fail (n_args >= 0);
arguments = g_newa (GIArgument, n_args);
for (i = 0; i < n_args; i++)
{
g_callable_info_load_arg (impl->invoker_info, i, &arg_info);
g_arg_info_load_type (&arg_info, &type_info);
if (g_arg_info_get_direction (&arg_info) == GI_DIRECTION_IN)
peas_gi_pointer_to_argument (&type_info, args[i + 1], &arguments[i]);
else
arguments[i].v_pointer = *((gpointer **) args[i + 1]);
}
success = peas_extension_wrapper_callv (instance, impl->interface_type,
impl->invoker_info, impl->method_name,
arguments, &return_value);
if (!success)
memset (&return_value, 0, sizeof (GIArgument));
g_callable_info_load_return_type (impl->invoker_info, &return_type_info);
if (g_type_info_get_tag (&return_type_info) != GI_TYPE_TAG_VOID)
peas_gi_argument_to_pointer (&return_type_info, &return_value, result);
}
/**
* peas_extension_call_valist: (skip)
* @exten: A #PeasExtension.
* @method_name: the name of the method that should be called.
* @args: the arguments for the method.
*
* Call a method of the object behind @extension, using @args as arguments.
*
* See peas_extension_call() for more information.
*
* Return value: %TRUE on successful call.
*
* Deprecated: 1.2. Use the dynamically implemented interface instead.
*/
gboolean
peas_extension_call_valist (PeasExtension *exten,
const gchar *method_name,
va_list args)
{
GICallableInfo *callable_info;
GITypeInfo retval_info;
GIArgument *gargs;
GIArgument retval;
gpointer retval_ptr;
gboolean ret;
gint n_args;
g_return_val_if_fail (PEAS_IS_EXTENSION (exten), FALSE);
g_return_val_if_fail (method_name != NULL, FALSE);
callable_info = peas_gi_get_method_info (peas_extension_get_extension_type (exten),
method_name);
/* Already warned */
if (callable_info == NULL)
return FALSE;
n_args = g_callable_info_get_n_args (callable_info);
g_return_val_if_fail (n_args >= 0, FALSE);
gargs = g_newa (GIArgument, n_args);
peas_gi_valist_to_arguments (callable_info, args, gargs, &retval_ptr);
ret = peas_extension_callv (exten, method_name, gargs, &retval);
if (retval_ptr != NULL)
{
g_callable_info_load_return_type (callable_info, &retval_info);
peas_gi_argument_to_pointer (&retval_info, &retval, retval_ptr);
}
g_base_info_unref ((GIBaseInfo *) callable_info);
return ret;
}
static gboolean
peas_extension_seed_call (PeasExtensionWrapper *exten,
const gchar *method_name,
GIArgument *args,
GIArgument *retval)
{
PeasExtensionSeed *sexten = PEAS_EXTENSION_SEED (exten);
GType exten_type;
SeedValue js_method;
GICallableInfo *func_info;
gint n_args, i;
SeedValue *js_in_args;
OutArg *out_args;
SeedValue js_ret, val;
SeedException exc = NULL;
gchar *exc_string;
gint n_in_args = 0;
gint n_out_args = 0;
GIArgument argument;
g_return_val_if_fail (sexten->js_context != NULL, FALSE);
g_return_val_if_fail (sexten->js_object != NULL, FALSE);
exten_type = peas_extension_wrapper_get_extension_type (exten);
/* Fetch the JS method we want to call */
js_method = seed_object_get_property (sexten->js_context,
sexten->js_object,
method_name);
if (seed_value_is_undefined (sexten->js_context, js_method))
{
g_warning ("Method '%s.%s' is not defined",
g_type_name (exten_type), method_name);
return FALSE;
}
/* We want to display an error if the method is defined but is not a function. */
if (!seed_value_is_function (sexten->js_context, js_method))
{
g_warning ("Method '%s.%s' is not a function",
g_type_name (exten_type), method_name);
return FALSE;
}
/* Prepare the arguments */
func_info = peas_gi_get_method_info (exten_type, method_name);
if (func_info == NULL)
return FALSE;
n_args = g_callable_info_get_n_args (func_info);
g_return_val_if_fail (n_args >= 0, FALSE);
js_in_args = g_newa (SeedValue, n_args);
out_args = g_newa (OutArg, n_args + 1);
/* We put the return value first in the out tuple, as it seems to be
* the common behaviour for GI-based bindings */
g_callable_info_load_return_type (func_info, &out_args[0].type_info);
if (g_type_info_get_tag (&out_args[0].type_info) != GI_TYPE_TAG_VOID)
out_args[n_out_args++].ptr = &retval->v_pointer;
/* Handle the other arguments */
for (i = 0; i < n_args && exc == NULL; i++)
{
GIArgInfo arg_info;
GIDirection direction;
g_callable_info_load_arg (func_info, i, &arg_info);
direction = g_arg_info_get_direction (&arg_info);
g_arg_info_load_type (&arg_info, &out_args[n_out_args].type_info);
if (direction == GI_DIRECTION_IN)
{
js_in_args[n_in_args++] = seed_value_from_gi_argument (sexten->js_context,
&args[i],
&out_args[n_out_args].type_info,
&exc);
}
if (direction == GI_DIRECTION_INOUT)
{
GIArgument arg;
peas_gi_pointer_to_argument (&out_args[n_out_args].type_info,
args[i].v_pointer, &arg);
js_in_args[n_in_args++] = seed_value_from_gi_argument (sexten->js_context,
&arg,
&out_args[n_out_args].type_info,
&exc);
}
if (direction == GI_DIRECTION_OUT || direction == GI_DIRECTION_INOUT)
out_args[n_out_args++].ptr = args[i].v_pointer;
}
if (exc != NULL)
goto cleanup;
js_ret = seed_object_call (sexten->js_context,
js_method,
sexten->js_object,
n_in_args,
js_in_args,
&exc);
if (exc != NULL)
goto cleanup;
if (n_out_args == 1)
{
if (seed_value_to_gi_argument (sexten->js_context, js_ret,
&out_args[0].type_info, &argument, &exc))
{
peas_gi_argument_to_pointer (&out_args[0].type_info,
&argument, out_args[0].ptr);
}
}
else if (n_out_args > 0 && seed_value_is_object (sexten->js_context, js_ret))
{
for (i = 0; i < n_out_args && exc == NULL; i++)
{
val = seed_object_get_property_at_index (sexten->js_context, js_ret,
i, exc);
if (exc == NULL &&
seed_value_to_gi_argument (sexten->js_context, val,
&out_args[i].type_info,
&argument, &exc))
{
peas_gi_argument_to_pointer (&out_args[i].type_info,
&argument, out_args[i].ptr);
}
}
}
cleanup:
g_base_info_unref ((GIBaseInfo *) func_info);
if (exc == NULL)
return TRUE;
exc_string = seed_exception_to_string (sexten->js_context, exc);
g_warning ("Seed Exception: %s", exc_string);
g_free (exc_string);
return FALSE;
}
