static PyObject *
_wrap_g_field_info_set_value (PyGIBaseInfo *self,
PyObject *args)
{
PyObject *instance;
PyObject *py_value;
GIBaseInfo *container_info;
GIInfoType container_info_type;
gpointer pointer;
GITypeInfo *field_type_info;
GIArgument value;
PyObject *retval = NULL;
if (!PyArg_ParseTuple (args, "OO:FieldInfo.set_value", &instance, &py_value)) {
return NULL;
}
container_info = g_base_info_get_container (self->info);
g_assert (container_info != NULL);
/* Check the instance. */
if (!_pygi_g_registered_type_info_check_object ( (GIRegisteredTypeInfo *) container_info, TRUE, instance)) {
_PyGI_ERROR_PREFIX ("argument 1: ");
return NULL;
}
/* Get the pointer to the container. */
container_info_type = g_base_info_get_type (container_info);
switch (container_info_type) {
case GI_INFO_TYPE_UNION:
case GI_INFO_TYPE_STRUCT:
pointer = pyg_boxed_get (instance, void);
break;
case GI_INFO_TYPE_OBJECT:
pointer = pygobject_get (instance);
break;
default:
/* Other types don't have fields. */
g_assert_not_reached();
}
field_type_info = g_field_info_get_type ( (GIFieldInfo *) self->info);
/* Check the value. */
{
gboolean retval;
retval = _pygi_g_type_info_check_object (field_type_info, py_value, TRUE);
if (retval < 0) {
goto out;
}
if (!retval) {
_PyGI_ERROR_PREFIX ("argument 2: ");
goto out;
}
}
/* Set the field's value. */
/* A few types are not handled by g_field_info_set_field, so do it here. */
if (!g_type_info_is_pointer (field_type_info)
&& g_type_info_get_tag (field_type_info) == GI_TYPE_TAG_INTERFACE) {
GIBaseInfo *info;
GIInfoType info_type;
if (! (g_field_info_get_flags ( (GIFieldInfo *) self->info) & GI_FIELD_IS_WRITABLE)) {
PyErr_SetString (PyExc_RuntimeError, "field is not writable");
goto out;
}
info = g_type_info_get_interface (field_type_info);
info_type = g_base_info_get_type (info);
switch (info_type) {
case GI_INFO_TYPE_UNION:
PyErr_SetString (PyExc_NotImplementedError, "setting an union is not supported yet");
goto out;
case GI_INFO_TYPE_STRUCT:
{
gboolean is_simple;
gsize offset;
gssize size;
is_simple = pygi_g_struct_info_is_simple ( (GIStructInfo *) info);
if (!is_simple) {
PyErr_SetString (PyExc_TypeError,
"cannot set a structure which has no well-defined ownership transfer rules");
g_base_info_unref (info);
goto out;
}
value = _pygi_argument_from_object (py_value, field_type_info, GI_TRANSFER_NOTHING);
if (PyErr_Occurred()) {
g_base_info_unref (info);
goto out;
}
offset = g_field_info_get_offset ( (GIFieldInfo *) self->info);
size = g_struct_info_get_size ( (GIStructInfo *) info);
g_assert (size > 0);
g_memmove ((char*) pointer + offset, value.v_pointer, size);
g_base_info_unref (info);
retval = Py_None;
goto out;
}
default:
/* Fallback. */
break;
}
g_base_info_unref (info);
} else if (g_type_info_is_pointer (field_type_info)
&& g_type_info_get_tag (field_type_info) == GI_TYPE_TAG_VOID) {
int offset;
if (py_value != Py_None && !PYGLIB_PyLong_Check(py_value)) {
if (PyErr_WarnEx(PyExc_RuntimeWarning,
"Usage of gpointers to store objects is being deprecated. "
"Please use integer values only, see: https://bugzilla.gnome.org/show_bug.cgi?id=683599",
1))
goto out;
}
offset = g_field_info_get_offset ((GIFieldInfo *) self->info);
value = _pygi_argument_from_object (py_value, field_type_info, GI_TRANSFER_NOTHING);
/* Decrement the previous python object stashed on the void pointer.
* This seems somewhat dangerous as the code is blindly assuming any
* void pointer field stores a python object pointer and then decrefs it.
* This is essentially the same as something like:
* Py_XDECREF(struct->void_ptr); */
Py_XDECREF(G_STRUCT_MEMBER (gpointer, pointer, offset));
/* Assign and increment the newly assigned object. At this point the value
* arg will hold a pointer the python object "py_value" or NULL.
* This is essentially:
* struct->void_ptr = value.v_pointer;
* Py_XINCREF(struct->void_ptr);
*/
G_STRUCT_MEMBER (gpointer, pointer, offset) = (gpointer)value.v_pointer;
Py_XINCREF(G_STRUCT_MEMBER (gpointer, pointer, offset));
retval = Py_None;
goto out;
}
value = _pygi_argument_from_object (py_value, field_type_info, GI_TRANSFER_EVERYTHING);
if (PyErr_Occurred()) {
goto out;
}
if (!g_field_info_set_field ( (GIFieldInfo *) self->info, pointer, &value)) {
_pygi_argument_release (&value, field_type_info, GI_TRANSFER_NOTHING, GI_DIRECTION_IN);
PyErr_SetString (PyExc_RuntimeError, "unable to set value for field");
goto out;
}
retval = Py_None;
out:
g_base_info_unref ( (GIBaseInfo *) field_type_info);
Py_XINCREF (retval);
return retval;
}
GIArgument
_pygi_argument_from_object (PyObject *object,
GITypeInfo *type_info,
GITransfer transfer)
{
GIArgument arg;
GITypeTag type_tag;
gpointer cleanup_data = NULL;
memset(&arg, 0, sizeof(GIArgument));
type_tag = g_type_info_get_tag (type_info);
/* Ignores cleanup data for now. */
if (_pygi_marshal_from_py_basic_type (object, &arg, type_tag, transfer, &cleanup_data) ||
PyErr_Occurred()) {
return arg;
}
switch (type_tag) {
case GI_TYPE_TAG_ARRAY:
{
Py_ssize_t length;
gboolean is_zero_terminated;
GITypeInfo *item_type_info;
gsize item_size;
GArray *array;
GITransfer item_transfer;
Py_ssize_t i;
if (object == Py_None) {
arg.v_pointer = NULL;
break;
}
/* Note, strings are sequences, but we cannot accept them here */
if (!PySequence_Check (object) ||
#if PY_VERSION_HEX < 0x03000000
PyString_Check (object) ||
#endif
PyUnicode_Check (object)) {
PyErr_SetString (PyExc_TypeError, "expected sequence");
break;
}
length = PySequence_Length (object);
if (length < 0) {
break;
}
is_zero_terminated = g_type_info_is_zero_terminated (type_info);
item_type_info = g_type_info_get_param_type (type_info, 0);
/* we handle arrays that are really strings specially, see below */
if (g_type_info_get_tag (item_type_info) == GI_TYPE_TAG_UINT8)
item_size = 1;
else
item_size = sizeof (GIArgument);
array = g_array_sized_new (is_zero_terminated, FALSE, item_size, length);
if (array == NULL) {
g_base_info_unref ( (GIBaseInfo *) item_type_info);
PyErr_NoMemory();
break;
}
if (g_type_info_get_tag (item_type_info) == GI_TYPE_TAG_UINT8 &&
PYGLIB_PyBytes_Check(object)) {
memcpy(array->data, PYGLIB_PyBytes_AsString(object), length);
array->len = length;
goto array_success;
}
item_transfer = transfer == GI_TRANSFER_CONTAINER ? GI_TRANSFER_NOTHING : transfer;
for (i = 0; i < length; i++) {
PyObject *py_item;
GIArgument item;
py_item = PySequence_GetItem (object, i);
if (py_item == NULL) {
goto array_item_error;
}
item = _pygi_argument_from_object (py_item, item_type_info, item_transfer);
Py_DECREF (py_item);
if (PyErr_Occurred()) {
goto array_item_error;
}
g_array_insert_val (array, i, item);
continue;
array_item_error:
/* Free everything we have converted so far. */
_pygi_argument_release ( (GIArgument *) &array, type_info,
GI_TRANSFER_NOTHING, GI_DIRECTION_IN);
array = NULL;
_PyGI_ERROR_PREFIX ("Item %zd: ", i);
break;
}
array_success:
arg.v_pointer = array;
g_base_info_unref ( (GIBaseInfo *) item_type_info);
break;
}
case GI_TYPE_TAG_INTERFACE:
{
GIBaseInfo *info;
GIInfoType info_type;
info = g_type_info_get_interface (type_info);
info_type = g_base_info_get_type (info);
switch (info_type) {
case GI_INFO_TYPE_CALLBACK:
/* This should be handled in invoke() */
g_assert_not_reached();
break;
case GI_INFO_TYPE_BOXED:
case GI_INFO_TYPE_STRUCT:
case GI_INFO_TYPE_UNION:
{
GType g_type;
PyObject *py_type;
gboolean is_foreign = (info_type == GI_INFO_TYPE_STRUCT) &&
(g_struct_info_is_foreign ((GIStructInfo *) info));
g_type = g_registered_type_info_get_g_type ( (GIRegisteredTypeInfo *) info);
py_type = _pygi_type_import_by_gi_info ( (GIBaseInfo *) info);
/* Note for G_TYPE_VALUE g_type:
* This will currently leak the GValue that is allocated and
* stashed in arg.v_pointer. Out argument marshaling for caller
* allocated GValues already pass in memory for the GValue.
* Further re-factoring is needed to fix this leak.
* See: https://bugzilla.gnome.org/show_bug.cgi?id=693405
*/
pygi_arg_struct_from_py_marshal (object,
&arg,
NULL, /*arg_name*/
info, /*interface_info*/
g_type,
py_type,
transfer,
FALSE, /*copy_reference*/
is_foreign,
g_type_info_is_pointer (type_info));
Py_DECREF (py_type);
break;
}
case GI_INFO_TYPE_ENUM:
case GI_INFO_TYPE_FLAGS:
{
PyObject *int_;
int_ = PYGLIB_PyNumber_Long (object);
if (int_ == NULL) {
break;
}
arg.v_int = PYGLIB_PyLong_AsLong (int_);
Py_DECREF (int_);
break;
}
case GI_INFO_TYPE_INTERFACE:
case GI_INFO_TYPE_OBJECT:
/* An error within this call will result in a NULL arg */
pygi_arg_gobject_out_arg_from_py (object, &arg, transfer);
break;
default:
g_assert_not_reached();
}
g_base_info_unref (info);
break;
}
case GI_TYPE_TAG_GLIST:
case GI_TYPE_TAG_GSLIST:
{
Py_ssize_t length;
GITypeInfo *item_type_info;
GSList *list = NULL;
GITransfer item_transfer;
Py_ssize_t i;
if (object == Py_None) {
arg.v_pointer = NULL;
break;
}
length = PySequence_Length (object);
if (length < 0) {
break;
}
item_type_info = g_type_info_get_param_type (type_info, 0);
g_assert (item_type_info != NULL);
item_transfer = transfer == GI_TRANSFER_CONTAINER ? GI_TRANSFER_NOTHING : transfer;
for (i = length - 1; i >= 0; i--) {
PyObject *py_item;
GIArgument item;
py_item = PySequence_GetItem (object, i);
if (py_item == NULL) {
goto list_item_error;
}
item = _pygi_argument_from_object (py_item, item_type_info, item_transfer);
Py_DECREF (py_item);
if (PyErr_Occurred()) {
goto list_item_error;
}
if (type_tag == GI_TYPE_TAG_GLIST) {
list = (GSList *) g_list_prepend ( (GList *) list, item.v_pointer);
} else {
list = g_slist_prepend (list, item.v_pointer);
}
continue;
list_item_error:
/* Free everything we have converted so far. */
_pygi_argument_release ( (GIArgument *) &list, type_info,
GI_TRANSFER_NOTHING, GI_DIRECTION_IN);
list = NULL;
_PyGI_ERROR_PREFIX ("Item %zd: ", i);
break;
}
arg.v_pointer = list;
g_base_info_unref ( (GIBaseInfo *) item_type_info);
break;
}
case GI_TYPE_TAG_GHASH:
{
Py_ssize_t length;
PyObject *keys;
PyObject *values;
GITypeInfo *key_type_info;
GITypeInfo *value_type_info;
GITypeTag key_type_tag;
GHashFunc hash_func;
GEqualFunc equal_func;
GHashTable *hash_table;
GITransfer item_transfer;
Py_ssize_t i;
if (object == Py_None) {
arg.v_pointer = NULL;
break;
}
length = PyMapping_Length (object);
if (length < 0) {
break;
}
keys = PyMapping_Keys (object);
if (keys == NULL) {
break;
}
values = PyMapping_Values (object);
if (values == NULL) {
Py_DECREF (keys);
break;
}
key_type_info = g_type_info_get_param_type (type_info, 0);
g_assert (key_type_info != NULL);
value_type_info = g_type_info_get_param_type (type_info, 1);
g_assert (value_type_info != NULL);
key_type_tag = g_type_info_get_tag (key_type_info);
switch (key_type_tag) {
case GI_TYPE_TAG_UTF8:
case GI_TYPE_TAG_FILENAME:
hash_func = g_str_hash;
equal_func = g_str_equal;
break;
default:
hash_func = NULL;
equal_func = NULL;
}
hash_table = g_hash_table_new (hash_func, equal_func);
if (hash_table == NULL) {
PyErr_NoMemory();
goto hash_table_release;
}
item_transfer = transfer == GI_TRANSFER_CONTAINER ? GI_TRANSFER_NOTHING : transfer;
for (i = 0; i < length; i++) {
PyObject *py_key;
PyObject *py_value;
GIArgument key;
GIArgument value;
py_key = PyList_GET_ITEM (keys, i);
py_value = PyList_GET_ITEM (values, i);
key = _pygi_argument_from_object (py_key, key_type_info, item_transfer);
if (PyErr_Occurred()) {
goto hash_table_item_error;
}
value = _pygi_argument_from_object (py_value, value_type_info, item_transfer);
if (PyErr_Occurred()) {
_pygi_argument_release (&key, type_info, GI_TRANSFER_NOTHING, GI_DIRECTION_IN);
goto hash_table_item_error;
}
g_hash_table_insert (hash_table, key.v_pointer,
_pygi_arg_to_hash_pointer (&value, g_type_info_get_tag (value_type_info)));
continue;
hash_table_item_error:
/* Free everything we have converted so far. */
_pygi_argument_release ( (GIArgument *) &hash_table, type_info,
GI_TRANSFER_NOTHING, GI_DIRECTION_IN);
hash_table = NULL;
_PyGI_ERROR_PREFIX ("Item %zd: ", i);
break;
}
arg.v_pointer = hash_table;
hash_table_release:
g_base_info_unref ( (GIBaseInfo *) key_type_info);
g_base_info_unref ( (GIBaseInfo *) value_type_info);
Py_DECREF (keys);
Py_DECREF (values);
break;
}
case GI_TYPE_TAG_ERROR:
PyErr_SetString (PyExc_NotImplementedError, "error marshalling is not supported yet");
/* TODO */
break;
default:
g_assert_not_reached ();
}
return arg;
}
void
_pygi_argument_release (GIArgument *arg,
GITypeInfo *type_info,
GITransfer transfer,
GIDirection direction)
{
GITypeTag type_tag;
gboolean is_out = (direction == GI_DIRECTION_OUT || direction == GI_DIRECTION_INOUT);
type_tag = g_type_info_get_tag (type_info);
switch (type_tag) {
case GI_TYPE_TAG_VOID:
/* Don't do anything, it's transparent to the C side */
break;
case GI_TYPE_TAG_BOOLEAN:
case GI_TYPE_TAG_INT8:
case GI_TYPE_TAG_UINT8:
case GI_TYPE_TAG_INT16:
case GI_TYPE_TAG_UINT16:
case GI_TYPE_TAG_INT32:
case GI_TYPE_TAG_UINT32:
case GI_TYPE_TAG_INT64:
case GI_TYPE_TAG_UINT64:
case GI_TYPE_TAG_FLOAT:
case GI_TYPE_TAG_DOUBLE:
case GI_TYPE_TAG_GTYPE:
case GI_TYPE_TAG_UNICHAR:
break;
case GI_TYPE_TAG_FILENAME:
case GI_TYPE_TAG_UTF8:
/* With allow-none support the string could be NULL */
if ((arg->v_string != NULL &&
(direction == GI_DIRECTION_IN && transfer == GI_TRANSFER_NOTHING))
|| (direction == GI_DIRECTION_OUT && transfer == GI_TRANSFER_EVERYTHING)) {
g_free (arg->v_string);
}
break;
case GI_TYPE_TAG_ARRAY:
{
GArray *array;
gsize i;
if (arg->v_pointer == NULL) {
return;
}
array = arg->v_pointer;
if ( (direction == GI_DIRECTION_IN && transfer != GI_TRANSFER_EVERYTHING)
|| (direction == GI_DIRECTION_OUT && transfer == GI_TRANSFER_EVERYTHING)) {
GITypeInfo *item_type_info;
GITransfer item_transfer;
item_type_info = g_type_info_get_param_type (type_info, 0);
item_transfer = direction == GI_DIRECTION_IN ? GI_TRANSFER_NOTHING : GI_TRANSFER_EVERYTHING;
/* Free the items */
for (i = 0; i < array->len; i++) {
GIArgument *item;
item = &_g_array_index (array, GIArgument, i);
_pygi_argument_release (item, item_type_info, item_transfer, direction);
}
g_base_info_unref ( (GIBaseInfo *) item_type_info);
}
if ( (direction == GI_DIRECTION_IN && transfer == GI_TRANSFER_NOTHING)
|| (direction == GI_DIRECTION_OUT && transfer != GI_TRANSFER_NOTHING)) {
g_array_free (array, TRUE);
}
break;
}
case GI_TYPE_TAG_INTERFACE:
{
GIBaseInfo *info;
GIInfoType info_type;
info = g_type_info_get_interface (type_info);
info_type = g_base_info_get_type (info);
switch (info_type) {
case GI_INFO_TYPE_CALLBACK:
/* TODO */
break;
case GI_INFO_TYPE_BOXED:
case GI_INFO_TYPE_STRUCT:
case GI_INFO_TYPE_UNION:
{
GType type;
if (arg->v_pointer == NULL) {
return;
}
type = g_registered_type_info_get_g_type ( (GIRegisteredTypeInfo *) info);
if (g_type_is_a (type, G_TYPE_VALUE)) {
GValue *value;
value = arg->v_pointer;
if ( (direction == GI_DIRECTION_IN && transfer != GI_TRANSFER_EVERYTHING)
|| (direction == GI_DIRECTION_OUT && transfer == GI_TRANSFER_EVERYTHING)) {
g_value_unset (value);
}
if ( (direction == GI_DIRECTION_IN && transfer == GI_TRANSFER_NOTHING)
|| (direction == GI_DIRECTION_OUT && transfer != GI_TRANSFER_NOTHING)) {
g_slice_free (GValue, value);
}
} else if (g_type_is_a (type, G_TYPE_CLOSURE)) {
if (direction == GI_DIRECTION_IN && transfer == GI_TRANSFER_NOTHING) {
g_closure_unref (arg->v_pointer);
}
} else if (info_type == GI_INFO_TYPE_STRUCT &&
g_struct_info_is_foreign ((GIStructInfo*) info)) {
if (direction == GI_DIRECTION_OUT && transfer == GI_TRANSFER_EVERYTHING) {
pygi_struct_foreign_release (info, arg->v_pointer);
}
} else if (g_type_is_a (type, G_TYPE_BOXED)) {
} else if (g_type_is_a (type, G_TYPE_POINTER) || type == G_TYPE_NONE) {
g_warn_if_fail (!g_type_info_is_pointer (type_info) || transfer == GI_TRANSFER_NOTHING);
}
break;
}
case GI_INFO_TYPE_ENUM:
case GI_INFO_TYPE_FLAGS:
break;
case GI_INFO_TYPE_INTERFACE:
case GI_INFO_TYPE_OBJECT:
if (arg->v_pointer == NULL) {
return;
}
if (is_out && transfer == GI_TRANSFER_EVERYTHING) {
g_object_unref (arg->v_pointer);
}
break;
default:
g_assert_not_reached();
}
g_base_info_unref (info);
break;
}
case GI_TYPE_TAG_GLIST:
case GI_TYPE_TAG_GSLIST:
{
GSList *list;
if (arg->v_pointer == NULL) {
return;
}
list = arg->v_pointer;
if ( (direction == GI_DIRECTION_IN && transfer != GI_TRANSFER_EVERYTHING)
|| (direction == GI_DIRECTION_OUT && transfer == GI_TRANSFER_EVERYTHING)) {
GITypeInfo *item_type_info;
GITransfer item_transfer;
GSList *item;
item_type_info = g_type_info_get_param_type (type_info, 0);
g_assert (item_type_info != NULL);
item_transfer = direction == GI_DIRECTION_IN ? GI_TRANSFER_NOTHING : GI_TRANSFER_EVERYTHING;
/* Free the items */
for (item = list; item != NULL; item = g_slist_next (item)) {
_pygi_argument_release ( (GIArgument *) &item->data, item_type_info,
item_transfer, direction);
}
g_base_info_unref ( (GIBaseInfo *) item_type_info);
}
if ( (direction == GI_DIRECTION_IN && transfer == GI_TRANSFER_NOTHING)
|| (direction == GI_DIRECTION_OUT && transfer != GI_TRANSFER_NOTHING)) {
if (type_tag == GI_TYPE_TAG_GLIST) {
g_list_free ( (GList *) list);
} else {
/* type_tag == GI_TYPE_TAG_GSLIST */
g_slist_free (list);
}
}
break;
}
case GI_TYPE_TAG_GHASH:
{
GHashTable *hash_table;
if (arg->v_pointer == NULL) {
return;
}
hash_table = arg->v_pointer;
if (direction == GI_DIRECTION_IN && transfer != GI_TRANSFER_EVERYTHING) {
/* We created the table without a destroy function, so keys and
* values need to be released. */
GITypeInfo *key_type_info;
GITypeInfo *value_type_info;
GITransfer item_transfer;
GHashTableIter hash_table_iter;
gpointer key;
gpointer value;
key_type_info = g_type_info_get_param_type (type_info, 0);
g_assert (key_type_info != NULL);
value_type_info = g_type_info_get_param_type (type_info, 1);
g_assert (value_type_info != NULL);
if (direction == GI_DIRECTION_IN) {
item_transfer = GI_TRANSFER_NOTHING;
} else {
item_transfer = GI_TRANSFER_EVERYTHING;
}
g_hash_table_iter_init (&hash_table_iter, hash_table);
while (g_hash_table_iter_next (&hash_table_iter, &key, &value)) {
_pygi_argument_release ( (GIArgument *) &key, key_type_info,
item_transfer, direction);
_pygi_argument_release ( (GIArgument *) &value, value_type_info,
item_transfer, direction);
}
g_base_info_unref ( (GIBaseInfo *) key_type_info);
g_base_info_unref ( (GIBaseInfo *) value_type_info);
} else if (direction == GI_DIRECTION_OUT && transfer == GI_TRANSFER_CONTAINER) {
/* Be careful to avoid keys and values being freed if the
* callee gave a destroy function. */
g_hash_table_steal_all (hash_table);
}
if ( (direction == GI_DIRECTION_IN && transfer == GI_TRANSFER_NOTHING)
|| (direction == GI_DIRECTION_OUT && transfer != GI_TRANSFER_NOTHING)) {
g_hash_table_unref (hash_table);
}
break;
}
case GI_TYPE_TAG_ERROR:
{
GError *error;
if (arg->v_pointer == NULL) {
return;
}
error = * (GError **) arg->v_pointer;
if (error != NULL) {
g_error_free (error);
}
g_slice_free (GError *, arg->v_pointer);
break;
}
}
}
static PyObject *
_wrap_g_field_info_set_value (PyGIBaseInfo *self,
PyObject *args)
{
PyObject *instance;
PyObject *py_value;
GIBaseInfo *container_info;
GIInfoType container_info_type;
gpointer pointer;
GITypeInfo *field_type_info;
GIArgument value;
PyObject *retval = NULL;
if (!PyArg_ParseTuple (args, "OO:FieldInfo.set_value", &instance, &py_value)) {
return NULL;
}
container_info = g_base_info_get_container (self->info);
g_assert (container_info != NULL);
/* Check the instance. */
if (!_pygi_g_registered_type_info_check_object ( (GIRegisteredTypeInfo *) container_info, TRUE, instance)) {
_PyGI_ERROR_PREFIX ("argument 1: ");
return NULL;
}
/* Get the pointer to the container. */
container_info_type = g_base_info_get_type (container_info);
switch (container_info_type) {
case GI_INFO_TYPE_UNION:
case GI_INFO_TYPE_STRUCT:
pointer = pyg_boxed_get (instance, void);
break;
case GI_INFO_TYPE_OBJECT:
pointer = pygobject_get (instance);
break;
default:
/* Other types don't have fields. */
g_assert_not_reached();
}
field_type_info = g_field_info_get_type ( (GIFieldInfo *) self->info);
/* Check the value. */
{
gboolean retval;
retval = _pygi_g_type_info_check_object (field_type_info, py_value, TRUE);
if (retval < 0) {
goto out;
}
if (!retval) {
_PyGI_ERROR_PREFIX ("argument 2: ");
goto out;
}
}
/* Set the field's value. */
/* A few types are not handled by g_field_info_set_field, so do it here. */
if (!g_type_info_is_pointer (field_type_info)
&& g_type_info_get_tag (field_type_info) == GI_TYPE_TAG_INTERFACE) {
GIBaseInfo *info;
GIInfoType info_type;
if (! (g_field_info_get_flags ( (GIFieldInfo *) self->info) & GI_FIELD_IS_WRITABLE)) {
PyErr_SetString (PyExc_RuntimeError, "field is not writable");
goto out;
}
info = g_type_info_get_interface (field_type_info);
info_type = g_base_info_get_type (info);
switch (info_type) {
case GI_INFO_TYPE_UNION:
PyErr_SetString (PyExc_NotImplementedError, "setting an union is not supported yet");
goto out;
case GI_INFO_TYPE_STRUCT:
{
gboolean is_simple;
gsize offset;
gssize size;
is_simple = pygi_g_struct_info_is_simple ( (GIStructInfo *) info);
if (!is_simple) {
PyErr_SetString (PyExc_TypeError,
"cannot set a structure which has no well-defined ownership transfer rules");
g_base_info_unref (info);
goto out;
}
value = _pygi_argument_from_object (py_value, field_type_info, GI_TRANSFER_NOTHING);
if (PyErr_Occurred()) {
g_base_info_unref (info);
goto out;
}
offset = g_field_info_get_offset ( (GIFieldInfo *) self->info);
size = g_struct_info_get_size ( (GIStructInfo *) info);
g_assert (size > 0);
g_memmove (pointer + offset, value.v_pointer, size);
g_base_info_unref (info);
retval = Py_None;
goto out;
}
default:
/* Fallback. */
break;
}
g_base_info_unref (info);
}
value = _pygi_argument_from_object (py_value, field_type_info, GI_TRANSFER_EVERYTHING);
if (PyErr_Occurred()) {
goto out;
}
if (!g_field_info_set_field ( (GIFieldInfo *) self->info, pointer, &value)) {
_pygi_argument_release (&value, field_type_info, GI_TRANSFER_NOTHING, GI_DIRECTION_IN);
PyErr_SetString (PyExc_RuntimeError, "unable to set value for field");
goto out;
}
retval = Py_None;
out:
g_base_info_unref ( (GIBaseInfo *) field_type_info);
Py_XINCREF (retval);
return retval;
}
