PyObject *
_pygi_marshal_to_py_interface_struct (PyGIInvokeState *state,
PyGICallableCache *callable_cache,
PyGIArgCache *arg_cache,
GIArgument *arg)
{
PyObject *py_obj = NULL;
PyGIInterfaceCache *iface_cache = (PyGIInterfaceCache *)arg_cache;
GType type = iface_cache->g_type;
if (arg->v_pointer == NULL) {
py_obj = Py_None;
Py_INCREF (py_obj);
return py_obj;
}
if (g_type_is_a (type, G_TYPE_VALUE)) {
py_obj = pyg_value_as_pyobject (arg->v_pointer, FALSE);
} else if (iface_cache->is_foreign) {
py_obj = pygi_struct_foreign_convert_from_g_argument (iface_cache->interface_info,
arg->v_pointer);
} else if (g_type_is_a (type, G_TYPE_BOXED)) {
py_obj = _pygi_boxed_new ( (PyTypeObject *)iface_cache->py_type, arg->v_pointer,
arg_cache->transfer == GI_TRANSFER_EVERYTHING);
} else if (g_type_is_a (type, G_TYPE_POINTER)) {
if (iface_cache->py_type == NULL ||
!PyType_IsSubtype ( (PyTypeObject *)iface_cache->py_type, &PyGIStruct_Type)) {
g_warn_if_fail(arg_cache->transfer == GI_TRANSFER_NOTHING);
py_obj = pyg_pointer_new (type, arg->v_pointer);
} else {
py_obj = _pygi_struct_new ( (PyTypeObject *)iface_cache->py_type, arg->v_pointer,
arg_cache->transfer == GI_TRANSFER_EVERYTHING);
}
} else if (g_type_is_a (type, G_TYPE_VARIANT)) {
g_variant_ref_sink (arg->v_pointer);
py_obj = _pygi_struct_new ( (PyTypeObject *)iface_cache->py_type, arg->v_pointer,
FALSE);
} else if (type == G_TYPE_NONE && iface_cache->is_foreign) {
py_obj = pygi_struct_foreign_convert_from_g_argument (iface_cache->interface_info, arg->v_pointer);
} else if (type == G_TYPE_NONE) {
py_obj = _pygi_struct_new ( (PyTypeObject *) iface_cache->py_type, arg->v_pointer,
arg_cache->transfer == GI_TRANSFER_EVERYTHING);
} else {
PyErr_Format (PyExc_NotImplementedError,
"structure type '%s' is not supported yet",
g_type_name (type));
}
return py_obj;
}
PyObject *_moo_gvalue_to_pyobject (const GValue *val)
{
PyObject *obj;
obj = pyg_value_as_pyobject (val, TRUE);
if (!obj && !PyErr_Occurred ())
{
g_critical ("oops");
PyErr_Format (PyExc_TypeError, "could not convert value of type %s",
g_type_name (G_VALUE_TYPE (val)));
}
return obj;
}
static gboolean
marshal_emission_hook(GSignalInvocationHint *ihint,
guint n_param_values,
const GValue *param_values,
gpointer user_data)
{
PyGILState_STATE state;
gboolean retval = FALSE;
PyObject *func, *args;
PyObject *retobj;
PyObject *params;
guint i;
state = pyg_gil_state_ensure();
/* construct Python tuple for the parameter values */
params = PyTuple_New(n_param_values);
for (i = 0; i < n_param_values; i++) {
PyObject *item = pyg_value_as_pyobject(¶m_values[i], FALSE);
/* error condition */
if (!item) {
goto out;
}
PyTuple_SetItem(params, i, item);
}
args = (PyObject *)user_data;
func = PyTuple_GetItem(args, 0);
args = PySequence_Concat(params, PyTuple_GetItem(args, 1));
Py_DECREF(params);
/* params passed to function may have extra arguments */
retobj = PyObject_CallObject(func, args);
Py_DECREF(args);
if (retobj == NULL) {
PyErr_Print();
}
retval = (retobj == Py_True ? TRUE : FALSE);
Py_XDECREF(retobj);
out:
pyg_gil_state_release(state);
return retval;
}
static PyObject *
pygtk_tree_model_row_getitem(PyGtkTreeModelRow *self, Py_ssize_t column)
{
gint n_columns;
GValue value = { 0, };
PyObject *ret;
n_columns = gtk_tree_model_get_n_columns(self->model);
if (column < 0 || column >= n_columns) {
PyErr_SetString(PyExc_IndexError, "column index out of range");
return NULL;
}
gtk_tree_model_get_value(self->model, &self->iter, column, &value);
ret = pyg_value_as_pyobject(&value, TRUE);
g_value_unset(&value);
return ret;
}
static PyObject *
_wrap_test_value(PyObject *self, PyObject *args)
{
GValue tvalue = {0,}, *value = &tvalue;
PyObject *obj;
if (!PyArg_ParseTuple(args, "O", &obj))
return NULL;
g_value_init(value, G_TYPE_VALUE);
if (pyg_value_from_pyobject(value, obj)) {
PyErr_SetString(PyExc_TypeError, "Could not convert to GValue");
return NULL;
}
return pyg_value_as_pyobject(value, FALSE);
}
static PyObject *
_wrap_test_value_array(PyObject *self, PyObject *args)
{
GValue tvalue = {0,}, *value = &tvalue;
PyObject *obj;
if (!PyArg_ParseTuple(args, "O", &obj))
return NULL;
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
g_value_init(value, G_TYPE_VALUE_ARRAY);
G_GNUC_END_IGNORE_DEPRECATIONS
if (pyg_value_from_pyobject(value, obj)) {
PyErr_SetString(PyExc_TypeError, "Could not convert to GValueArray");
return NULL;
}
return pyg_value_as_pyobject(value, FALSE);
}
static PyObject *
gi_gst_list_from_value (const GValue * value)
{
PyObject *list, *value_list_type, *value_list;
gint i;
list = PyList_New (gst_value_list_get_size (value));
for (i = 0; i < gst_value_list_get_size (value); i++) {
const GValue *v = gst_value_list_get_value (value, i);
PyList_SET_ITEM (list, i, pyg_value_as_pyobject (v, TRUE));
}
value_list_type = gi_gst_get_type ("ValueList");
value_list = PyObject_CallFunction (value_list_type, "N", list);
Py_DECREF (value_list_type);
return value_list;
}
static void
pyg_signal_class_closure_marshal(GClosure *closure,
GValue *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data)
{
PyGILState_STATE state;
GObject *object;
PyObject *object_wrapper;
GSignalInvocationHint *hint = (GSignalInvocationHint *)invocation_hint;
gchar *method_name, *tmp;
PyObject *method;
PyObject *params, *ret;
guint i, len;
state = pyglib_gil_state_ensure();
g_return_if_fail(invocation_hint != NULL);
/* get the object passed as the first argument to the closure */
object = g_value_get_object(¶m_values[0]);
g_return_if_fail(object != NULL && G_IS_OBJECT(object));
/* get the wrapper for this object */
object_wrapper = pygobject_new(object);
g_return_if_fail(object_wrapper != NULL);
/* construct method name for this class closure */
method_name = g_strconcat("do_", g_signal_name(hint->signal_id), NULL);
/* convert dashes to underscores. For some reason, g_signal_name
* seems to convert all the underscores in the signal name to
dashes??? */
for (tmp = method_name; *tmp != '\0'; tmp++)
if (*tmp == '-') *tmp = '_';
method = PyObject_GetAttrString(object_wrapper, method_name);
g_free(method_name);
if (!method) {
PyErr_Clear();
Py_DECREF(object_wrapper);
pyglib_gil_state_release(state);
return;
}
Py_DECREF(object_wrapper);
/* construct Python tuple for the parameter values; don't copy boxed values
initially because we'll check after the call to see if a copy is needed. */
params = PyTuple_New(n_param_values - 1);
for (i = 1; i < n_param_values; i++) {
PyObject *item = pyg_value_as_pyobject(¶m_values[i], FALSE);
/* error condition */
if (!item) {
Py_DECREF(params);
pyglib_gil_state_release(state);
return;
}
PyTuple_SetItem(params, i - 1, item);
}
ret = PyObject_CallObject(method, params);
/* Copy boxed values if others ref them, this needs to be done regardless of
exception status. */
len = PyTuple_Size(params);
for (i = 0; i < len; i++) {
PyObject *item = PyTuple_GetItem(params, i);
if (item != NULL && PyObject_TypeCheck(item, &PyGBoxed_Type)
&& item->ob_refcnt != 1) {
PyGBoxed* boxed_item = (PyGBoxed*)item;
if (!boxed_item->free_on_dealloc) {
gpointer boxed_ptr = pyg_boxed_get_ptr (boxed_item);
pyg_boxed_set_ptr (boxed_item, g_boxed_copy (boxed_item->gtype, boxed_ptr));
boxed_item->free_on_dealloc = TRUE;
}
}
}
if (ret == NULL) {
PyErr_Print();
Py_DECREF(method);
Py_DECREF(params);
pyglib_gil_state_release(state);
return;
}
Py_DECREF(method);
Py_DECREF(params);
if (G_IS_VALUE(return_value))
pyg_value_from_pyobject(return_value, ret);
Py_DECREF(ret);
pyglib_gil_state_release(state);
}
static void
pyg_closure_marshal(GClosure *closure,
GValue *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data)
{
PyGILState_STATE state;
PyGClosure *pc = (PyGClosure *)closure;
PyObject *params, *ret;
guint i;
state = pyglib_gil_state_ensure();
/* construct Python tuple for the parameter values */
params = PyTuple_New(n_param_values);
for (i = 0; i < n_param_values; i++) {
/* swap in a different initial data for connect_object() */
if (i == 0 && G_CCLOSURE_SWAP_DATA(closure)) {
g_return_if_fail(pc->swap_data != NULL);
Py_INCREF(pc->swap_data);
PyTuple_SetItem(params, 0, pc->swap_data);
} else {
PyObject *item = pyg_value_as_pyobject(¶m_values[i], FALSE);
/* error condition */
if (!item) {
if (!PyErr_Occurred ())
PyErr_SetString (PyExc_TypeError,
"can't convert parameter to desired type");
if (pc->exception_handler)
pc->exception_handler (return_value, n_param_values, param_values);
else
PyErr_Print();
goto out;
}
PyTuple_SetItem(params, i, item);
}
}
/* params passed to function may have extra arguments */
if (pc->extra_args) {
PyObject *tuple = params;
params = PySequence_Concat(tuple, pc->extra_args);
Py_DECREF(tuple);
}
ret = PyObject_CallObject(pc->callback, params);
if (ret == NULL) {
if (pc->exception_handler)
pc->exception_handler(return_value, n_param_values, param_values);
else
PyErr_Print();
goto out;
}
if (G_IS_VALUE(return_value) && pyg_value_from_pyobject(return_value, ret) != 0) {
/* If we already have an exception set, use that, otherwise set a
* generic one */
if (!PyErr_Occurred())
PyErr_SetString(PyExc_TypeError,
"can't convert return value to desired type");
if (pc->exception_handler)
pc->exception_handler(return_value, n_param_values, param_values);
else
PyErr_Print();
}
Py_DECREF(ret);
out:
Py_DECREF(params);
pyglib_gil_state_release(state);
}
static void
pygi_signal_closure_marshal(GClosure *closure,
GValue *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data)
{
PyGILState_STATE state;
PyGClosure *pc = (PyGClosure *)closure;
PyObject *params, *ret = NULL;
guint i;
GISignalInfo *signal_info;
gint n_sig_info_args;
gint sig_info_highest_arg;
GSList *list_item = NULL;
GSList *pass_by_ref_structs = NULL;
state = PyGILState_Ensure();
signal_info = ((PyGISignalClosure *)closure)->signal_info;
n_sig_info_args = g_callable_info_get_n_args(signal_info);
/* the first argument to a signal callback is instance,
but instance is not counted in the introspection data */
sig_info_highest_arg = n_sig_info_args + 1;
g_assert_cmpint(sig_info_highest_arg, ==, n_param_values);
/* construct Python tuple for the parameter values */
params = PyTuple_New(n_param_values);
for (i = 0; i < n_param_values; i++) {
/* swap in a different initial data for connect_object() */
if (i == 0 && G_CCLOSURE_SWAP_DATA(closure)) {
g_return_if_fail(pc->swap_data != NULL);
Py_INCREF(pc->swap_data);
PyTuple_SetItem(params, 0, pc->swap_data);
} else if (i == 0) {
PyObject *item = pyg_value_as_pyobject(¶m_values[i], FALSE);
if (!item) {
goto out;
}
PyTuple_SetItem(params, i, item);
} else if (i < sig_info_highest_arg) {
GIArgInfo arg_info;
GITypeInfo type_info;
GITypeTag type_tag;
GIArgument arg = { 0, };
PyObject *item = NULL;
gboolean free_array = FALSE;
gboolean pass_struct_by_ref = FALSE;
g_callable_info_load_arg(signal_info, i - 1, &arg_info);
g_arg_info_load_type(&arg_info, &type_info);
arg = _pygi_argument_from_g_value(¶m_values[i], &type_info);
type_tag = g_type_info_get_tag (&type_info);
if (type_tag == GI_TYPE_TAG_ARRAY) {
/* Skip the self argument of param_values */
arg.v_pointer = _pygi_argument_to_array (&arg,
_pygi_argument_array_length_marshal,
(void *)(param_values + 1),
signal_info,
&type_info,
&free_array);
}
/* Hack to ensure struct arguments are passed-by-reference allowing
* callback implementors to modify the struct values. This is needed
* for keeping backwards compatibility and should be removed in future
* versions which support signal output arguments as return values.
* See: https://bugzilla.gnome.org/show_bug.cgi?id=735486
*
* Note the logic here must match the logic path taken in _pygi_argument_to_object.
*/
if (type_tag == GI_TYPE_TAG_INTERFACE) {
GIBaseInfo *info = g_type_info_get_interface (&type_info);
GIInfoType info_type = g_base_info_get_type (info);
if (info_type == GI_INFO_TYPE_STRUCT ||
info_type == GI_INFO_TYPE_BOXED ||
info_type == GI_INFO_TYPE_UNION) {
GType gtype = g_registered_type_info_get_g_type ((GIRegisteredTypeInfo *) info);
gboolean is_foreign = (info_type == GI_INFO_TYPE_STRUCT) &&
(g_struct_info_is_foreign ((GIStructInfo *) info));
if (!is_foreign && !g_type_is_a (gtype, G_TYPE_VALUE) &&
g_type_is_a (gtype, G_TYPE_BOXED)) {
pass_struct_by_ref = TRUE;
}
}
g_base_info_unref (info);
}
if (pass_struct_by_ref) {
/* transfer everything will ensure the struct is not copied when wrapped. */
item = _pygi_argument_to_object (&arg, &type_info, GI_TRANSFER_EVERYTHING);
if (item && PyObject_IsInstance (item, (PyObject *) &PyGIBoxed_Type)) {
((PyGBoxed *)item)->free_on_dealloc = FALSE;
pass_by_ref_structs = g_slist_prepend (pass_by_ref_structs, item);
}
} else {
item = _pygi_argument_to_object (&arg, &type_info, GI_TRANSFER_NOTHING);
}
if (free_array) {
g_array_free (arg.v_pointer, FALSE);
}
if (item == NULL) {
PyErr_Print ();
goto out;
}
PyTuple_SetItem(params, i, item);
}
}
/* params passed to function may have extra arguments */
if (pc->extra_args) {
PyObject *tuple = params;
params = PySequence_Concat(tuple, pc->extra_args);
Py_DECREF(tuple);
}
ret = PyObject_CallObject(pc->callback, params);
if (ret == NULL) {
if (pc->exception_handler)
pc->exception_handler(return_value, n_param_values, param_values);
else
PyErr_Print();
goto out;
}
if (G_IS_VALUE(return_value) && pyg_value_from_pyobject(return_value, ret) != 0) {
PyErr_SetString(PyExc_TypeError,
"can't convert return value to desired type");
if (pc->exception_handler)
pc->exception_handler(return_value, n_param_values, param_values);
else
PyErr_Print();
}
Py_DECREF(ret);
/* Run through the list of structs which have been passed by reference and
* check if they are being held longer than the duration of the callback
* execution. This is determined if the ref count is greater than 1.
* A single ref is held by the argument list and any more would mean the callback
* stored a ref somewhere else. In this case we make an internal copy of
* the boxed struct so Python can own the memory to it.
*/
list_item = pass_by_ref_structs;
while (list_item) {
PyObject *item = list_item->data;
if (item->ob_refcnt > 1) {
_pygi_boxed_copy_in_place ((PyGIBoxed *)item);
}
list_item = g_slist_next (list_item);
}
out:
g_slist_free (pass_by_ref_structs);
Py_DECREF(params);
PyGILState_Release(state);
}
PyObject *
_pygi_marshal_to_py_interface_struct (GIArgument *arg,
GIInterfaceInfo *interface_info,
GType g_type,
PyObject *py_type,
GITransfer transfer,
gboolean is_allocated,
gboolean is_foreign)
{
PyObject *py_obj = NULL;
if (arg->v_pointer == NULL) {
Py_RETURN_NONE;
}
if (g_type_is_a (g_type, G_TYPE_VALUE)) {
py_obj = pyg_value_as_pyobject (arg->v_pointer, FALSE);
} else if (is_foreign) {
py_obj = pygi_struct_foreign_convert_from_g_argument (interface_info,
arg->v_pointer);
} else if (g_type_is_a (g_type, G_TYPE_BOXED)) {
if (py_type) {
py_obj = _pygi_boxed_new ((PyTypeObject *) py_type,
arg->v_pointer,
transfer == GI_TRANSFER_EVERYTHING || is_allocated,
is_allocated ?
g_struct_info_get_size(interface_info) : 0);
}
} else if (g_type_is_a (g_type, G_TYPE_POINTER)) {
if (py_type == NULL ||
!PyType_IsSubtype ((PyTypeObject *) py_type, &PyGIStruct_Type)) {
g_warn_if_fail (transfer == GI_TRANSFER_NOTHING);
py_obj = pyg_pointer_new (g_type, arg->v_pointer);
} else {
py_obj = _pygi_struct_new ( (PyTypeObject *) py_type,
arg->v_pointer,
transfer == GI_TRANSFER_EVERYTHING);
}
} else if (g_type_is_a (g_type, G_TYPE_VARIANT)) {
/* Note: sink the variant (add a ref) only if we are not transfered ownership.
* GLib.Variant overrides __del__ which will then call "g_variant_unref" for
* cleanup in either case. */
if (py_type) {
if (transfer == GI_TRANSFER_NOTHING) {
g_variant_ref_sink (arg->v_pointer);
}
py_obj = _pygi_struct_new ((PyTypeObject *) py_type,
arg->v_pointer,
FALSE);
}
} else if (g_type == G_TYPE_NONE) {
if (py_type) {
py_obj = _pygi_struct_new ((PyTypeObject *) py_type,
arg->v_pointer,
transfer == GI_TRANSFER_EVERYTHING);
}
} else {
PyErr_Format (PyExc_NotImplementedError,
"structure type '%s' is not supported yet",
g_type_name (g_type));
}
return py_obj;
}
/**
* pyg_value_as_pyobject:
* @value: the GValue object.
* @copy_boxed: true if boxed values should be copied.
*
* This function creates/returns a Python wrapper object that
* represents the GValue passed as an argument.
*
* Returns: a PyObject representing the value.
*/
PyObject *
pyg_value_as_pyobject(const GValue *value, gboolean copy_boxed)
{
gchar buf[128];
switch (G_TYPE_FUNDAMENTAL(G_VALUE_TYPE(value))) {
case G_TYPE_INTERFACE:
if (g_type_is_a(G_VALUE_TYPE(value), G_TYPE_OBJECT))
return pygobject_new(g_value_get_object(value));
else
break;
case G_TYPE_CHAR: {
gint8 val = g_value_get_char(value);
return PYGLIB_PyUnicode_FromStringAndSize((char *)&val, 1);
}
case G_TYPE_UCHAR: {
guint8 val = g_value_get_uchar(value);
return PYGLIB_PyBytes_FromStringAndSize((char *)&val, 1);
}
case G_TYPE_BOOLEAN: {
return PyBool_FromLong(g_value_get_boolean(value));
}
case G_TYPE_INT:
return PYGLIB_PyLong_FromLong(g_value_get_int(value));
case G_TYPE_UINT:
{
/* in Python, the Int object is backed by a long. If a
long can hold the whole value of an unsigned int, use
an Int. Otherwise, use a Long object to avoid overflow.
This matches the ULongArg behavior in codegen/argtypes.h */
#if (G_MAXUINT <= G_MAXLONG)
return PYGLIB_PyLong_FromLong((glong) g_value_get_uint(value));
#else
return PyLong_FromUnsignedLong((gulong) g_value_get_uint(value));
#endif
}
case G_TYPE_LONG:
return PYGLIB_PyLong_FromLong(g_value_get_long(value));
case G_TYPE_ULONG:
{
gulong val = g_value_get_ulong(value);
if (val <= G_MAXLONG)
return PYGLIB_PyLong_FromLong((glong) val);
else
return PyLong_FromUnsignedLong(val);
}
case G_TYPE_INT64:
{
gint64 val = g_value_get_int64(value);
if (G_MINLONG <= val && val <= G_MAXLONG)
return PYGLIB_PyLong_FromLong((glong) val);
else
return PyLong_FromLongLong(val);
}
case G_TYPE_UINT64:
{
guint64 val = g_value_get_uint64(value);
if (val <= G_MAXLONG)
return PYGLIB_PyLong_FromLong((glong) val);
else
return PyLong_FromUnsignedLongLong(val);
}
case G_TYPE_ENUM:
return pyg_enum_from_gtype(G_VALUE_TYPE(value), g_value_get_enum(value));
case G_TYPE_FLAGS:
return pyg_flags_from_gtype(G_VALUE_TYPE(value), g_value_get_flags(value));
case G_TYPE_FLOAT:
return PyFloat_FromDouble(g_value_get_float(value));
case G_TYPE_DOUBLE:
return PyFloat_FromDouble(g_value_get_double(value));
case G_TYPE_STRING:
{
const gchar *str = g_value_get_string(value);
if (str)
return PYGLIB_PyUnicode_FromString(str);
Py_INCREF(Py_None);
return Py_None;
}
case G_TYPE_POINTER:
return pyg_pointer_new(G_VALUE_TYPE(value),
g_value_get_pointer(value));
case G_TYPE_BOXED: {
PyGTypeMarshal *bm;
if (G_VALUE_HOLDS(value, PY_TYPE_OBJECT)) {
PyObject *ret = (PyObject *)g_value_dup_boxed(value);
if (ret == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
return ret;
} else if (G_VALUE_HOLDS(value, G_TYPE_VALUE)) {
GValue *n_value = g_value_get_boxed (value);
return pyg_value_as_pyobject(n_value, copy_boxed);
} else if (G_VALUE_HOLDS(value, G_TYPE_VALUE_ARRAY)) {
GValueArray *array = (GValueArray *) g_value_get_boxed(value);
PyObject *ret = PyList_New(array->n_values);
int i;
for (i = 0; i < array->n_values; ++i)
PyList_SET_ITEM(ret, i, pyg_value_as_pyobject
(array->values + i, copy_boxed));
return ret;
} else if (G_VALUE_HOLDS(value, G_TYPE_GSTRING)) {
GString *string = (GString *) g_value_get_boxed(value);
PyObject *ret = PYGLIB_PyUnicode_FromStringAndSize(string->str, string->len);
return ret;
}
bm = pyg_type_lookup(G_VALUE_TYPE(value));
if (bm) {
return bm->fromvalue(value);
} else {
if (copy_boxed)
return pyg_boxed_new(G_VALUE_TYPE(value),
g_value_get_boxed(value), TRUE, TRUE);
else
return pyg_boxed_new(G_VALUE_TYPE(value),
g_value_get_boxed(value),FALSE,FALSE);
}
}
case G_TYPE_PARAM:
return pyg_param_spec_new(g_value_get_param(value));
case G_TYPE_OBJECT:
return pygobject_new(g_value_get_object(value));
default:
{
PyGTypeMarshal *bm;
if ((bm = pyg_type_lookup(G_VALUE_TYPE(value))))
return bm->fromvalue(value);
break;
}
}
g_snprintf(buf, sizeof(buf), "unknown type %s",
g_type_name(G_VALUE_TYPE(value)));
PyErr_SetString(PyExc_TypeError, buf);
return NULL;
}
