1 /* -*- Mode: C; c-basic-offset: 4 -*- */
8 #include <glib-object.h>
12 /* PyGClosure is a _private_ structure */
13 typedef void (* PyClosureExceptionHandler) (GValue *ret, guint n_param_values, const GValue *params);
14 typedef struct _PyGClosure PyGClosure;
15 typedef struct _PyGObjectData PyGObjectData;
20 PyObject *extra_args; /* tuple of extra args to pass to callback */
21 PyObject *swap_data; /* other object for gtk_signal_connect__object */
22 PyClosureExceptionHandler exception_handler;
26 PYGOBJECT_USING_TOGGLE_REF = 1 << 0,
27 PYGOBJECT_IS_FLOATING_REF = 1 << 1
30 /* closures is just an alias for what is found in the
35 PyObject *inst_dict; /* the instance dictionary -- must be last */
36 PyObject *weakreflist; /* list of weak references */
39 /* using union to preserve ABI compatibility (structure size
42 GSList *closures; /* stale field; no longer updated DO-NOT-USE! */
48 #define pygobject_get(v) (((PyGObject *)(v))->obj)
49 #define pygobject_check(v,base) (PyObject_TypeCheck(v,base))
55 gboolean free_on_dealloc;
58 #define pyg_boxed_get(v,t) ((t *)((PyGBoxed *)(v))->boxed)
59 #define pyg_boxed_check(v,typecode) (PyObject_TypeCheck(v, &PyGBoxed_Type) && ((PyGBoxed *)(v))->gtype == typecode)
67 #define pyg_pointer_get(v,t) ((t *)((PyGPointer *)(v))->pointer)
68 #define pyg_pointer_check(v,typecode) (PyObject_TypeCheck(v, &PyGPointer_Type) && ((PyGPointer *)(v))->gtype == typecode)
70 typedef void (*PyGFatalExceptionFunc) (void);
71 typedef void (*PyGThreadBlockFunc) (void);
78 #define PyGParamSpec_Get(v) (((PyGParamSpec *)v)->pspec)
79 #define PyGParamSpec_Check(v) (PyObject_TypeCheck(v, &PyGParamSpec_Type))
81 typedef int (*PyGClassInitFunc) (gpointer gclass, PyTypeObject *pyclass);
82 typedef PyTypeObject * (*PyGTypeRegistrationFunction) (const gchar *name,
85 struct _PyGObject_Functions {
87 * All field names in here are considered private,
88 * use the macros below instead, which provides stability
90 void (* register_class)(PyObject *dict, const gchar *class_name,
91 GType gtype, PyTypeObject *type, PyObject *bases);
92 void (* register_wrapper)(PyObject *self);
93 PyTypeObject *(* lookup_class)(GType type);
94 PyObject *(* newgobj)(GObject *obj);
96 GClosure *(* closure_new)(PyObject *callback, PyObject *extra_args,
98 void (* object_watch_closure)(PyObject *self, GClosure *closure);
99 GDestroyNotify destroy_notify;
101 GType (* type_from_object)(PyObject *obj);
102 PyObject *(* type_wrapper_new)(GType type);
104 gint (* enum_get_value)(GType enum_type, PyObject *obj, gint *val);
105 gint (* flags_get_value)(GType flag_type, PyObject *obj, gint *val);
106 void (* register_gtype_custom)(GType gtype,
107 PyObject *(* from_func)(const GValue *value),
108 int (* to_func)(GValue *value, PyObject *obj));
109 int (* value_from_pyobject)(GValue *value, PyObject *obj);
110 PyObject *(* value_as_pyobject)(const GValue *value, gboolean copy_boxed);
112 void (* register_interface)(PyObject *dict, const gchar *class_name,
113 GType gtype, PyTypeObject *type);
115 PyTypeObject *boxed_type;
116 void (* register_boxed)(PyObject *dict, const gchar *class_name,
117 GType boxed_type, PyTypeObject *type);
118 PyObject *(* boxed_new)(GType boxed_type, gpointer boxed,
119 gboolean copy_boxed, gboolean own_ref);
121 PyTypeObject *pointer_type;
122 void (* register_pointer)(PyObject *dict, const gchar *class_name,
123 GType pointer_type, PyTypeObject *type);
124 PyObject *(* pointer_new)(GType boxed_type, gpointer pointer);
126 void (* enum_add_constants)(PyObject *module, GType enum_type,
127 const gchar *strip_prefix);
128 void (* flags_add_constants)(PyObject *module, GType flags_type,
129 const gchar *strip_prefix);
131 const gchar *(* constant_strip_prefix)(const gchar *name,
132 const gchar *strip_prefix);
134 gboolean (* error_check)(GError **error);
136 /* hooks to register handlers for getting GDK threads to cooperate
137 * with python threading */
138 void (* set_thread_block_funcs) (PyGThreadBlockFunc block_threads_func,
139 PyGThreadBlockFunc unblock_threads_func);
140 PyGThreadBlockFunc block_threads;
141 PyGThreadBlockFunc unblock_threads;
142 PyTypeObject *paramspec_type;
143 PyObject *(* paramspec_new)(GParamSpec *spec);
144 GParamSpec *(*paramspec_get)(PyObject *tuple);
145 int (*pyobj_to_unichar_conv)(PyObject *pyobj, void* ptr);
146 gboolean (*parse_constructor_args)(GType obj_type,
152 PyObject *(* param_gvalue_as_pyobject) (const GValue* gvalue,
154 const GParamSpec* pspec);
155 int (* gvalue_from_param_pyobject) (GValue* value,
157 const GParamSpec* pspec);
158 PyTypeObject *enum_type;
159 PyObject *(*enum_add)(PyObject *module,
160 const char *type_name_,
161 const char *strip_prefix,
163 PyObject* (*enum_from_gtype)(GType gtype, int value);
165 PyTypeObject *flags_type;
166 PyObject *(*flags_add)(PyObject *module,
167 const char *type_name_,
168 const char *strip_prefix,
170 PyObject* (*flags_from_gtype)(GType gtype, int value);
172 gboolean threads_enabled;
173 int (*enable_threads) (void);
175 int (*gil_state_ensure) (void);
176 void (*gil_state_release) (int flag);
178 void (*register_class_init) (GType gtype, PyGClassInitFunc class_init);
179 void (*register_interface_info) (GType gtype, const GInterfaceInfo *info);
180 void (*closure_set_exception_handler) (GClosure *closure, PyClosureExceptionHandler handler);
182 void (*add_warning_redirection) (const char *domain,
184 void (*disable_warning_redirections) (void);
185 void (*type_register_custom)(const gchar *type_name,
186 PyGTypeRegistrationFunction callback,
188 gboolean (*gerror_exception_check) (GError **error);
189 PyObject* (*option_group_new) (GOptionGroup *group);
190 GType (* type_from_object_strict) (PyObject *obj, gboolean strict);
193 #ifndef _INSIDE_PYGOBJECT_
195 #if defined(NO_IMPORT) || defined(NO_IMPORT_PYGOBJECT)
196 extern struct _PyGObject_Functions *_PyGObject_API;
198 struct _PyGObject_Functions *_PyGObject_API;
201 #define pygobject_register_class (_PyGObject_API->register_class)
202 #define pygobject_register_wrapper (_PyGObject_API->register_wrapper)
203 #define pygobject_lookup_class (_PyGObject_API->lookup_class)
204 #define pygobject_new (_PyGObject_API->newgobj)
205 #define pyg_closure_new (_PyGObject_API->closure_new)
206 #define pygobject_watch_closure (_PyGObject_API->object_watch_closure)
207 #define pyg_closure_set_exception_handler (_PyGObject_API->closure_set_exception_handler)
208 #define pyg_destroy_notify (_PyGObject_API->destroy_notify)
209 #define pyg_type_from_object_strict (_PyGObject_API->type_from_object_strict)
210 #define pyg_type_from_object (_PyGObject_API->type_from_object)
211 #define pyg_type_wrapper_new (_PyGObject_API->type_wrapper_new)
212 #define pyg_enum_get_value (_PyGObject_API->enum_get_value)
213 #define pyg_flags_get_value (_PyGObject_API->flags_get_value)
214 #define pyg_register_gtype_custom (_PyGObject_API->register_gtype_custom)
215 #define pyg_value_from_pyobject (_PyGObject_API->value_from_pyobject)
216 #define pyg_value_as_pyobject (_PyGObject_API->value_as_pyobject)
217 #define pyg_register_interface (_PyGObject_API->register_interface)
218 #define PyGBoxed_Type (*_PyGObject_API->boxed_type)
219 #define pyg_register_boxed (_PyGObject_API->register_boxed)
220 #define pyg_boxed_new (_PyGObject_API->boxed_new)
221 #define PyGPointer_Type (*_PyGObject_API->pointer_type)
222 #define pyg_register_pointer (_PyGObject_API->register_pointer)
223 #define pyg_pointer_new (_PyGObject_API->pointer_new)
224 #define pyg_enum_add_constants (_PyGObject_API->enum_add_constants)
225 #define pyg_flags_add_constants (_PyGObject_API->flags_add_constants)
226 #define pyg_constant_strip_prefix (_PyGObject_API->constant_strip_prefix)
227 #define pyg_error_check (_PyGObject_API->error_check)
228 #define pyg_set_thread_block_funcs (_PyGObject_API->set_thread_block_funcs)
229 #define PyGParamSpec_Type (*_PyGObject_API->paramspec_type)
230 #define pyg_param_spec_new (_PyGObject_API->paramspec_new)
231 #define pyg_param_spec_from_object (_PyGObject_API->paramspec_get)
232 #define pyg_pyobj_to_unichar_conv (_PyGObject_API->pyobj_to_unichar_conv)
233 #define pyg_parse_constructor_args (_PyGObject_API->parse_constructor_args)
234 #define pyg_param_gvalue_as_pyobject (_PyGObject_API->value_as_pyobject)
235 #define pyg_param_gvalue_from_pyobject (_PyGObject_API->gvalue_from_param_pyobject)
236 #define PyGEnum_Type (*_PyGObject_API->enum_type)
237 #define pyg_enum_add (_PyGObject_API->enum_add)
238 #define pyg_enum_from_gtype (_PyGObject_API->enum_from_gtype)
239 #define PyGFlags_Type (*_PyGObject_API->flags_type)
240 #define pyg_flags_add (_PyGObject_API->flags_add)
241 #define pyg_flags_from_gtype (_PyGObject_API->flags_from_gtype)
242 #define pyg_enable_threads (_PyGObject_API->enable_threads)
243 #define pyg_gil_state_ensure (_PyGObject_API->gil_state_ensure)
244 #define pyg_gil_state_release (_PyGObject_API->gil_state_release)
245 #define pyg_register_class_init (_PyGObject_API->register_class_init)
246 #define pyg_register_interface_info (_PyGObject_API->register_interface_info)
247 #define pyg_add_warning_redirection (_PyGObject_API->add_warning_redirection)
248 #define pyg_disable_warning_redirections (_PyGObject_API->disable_warning_redirections)
249 #define pyg_type_register_custom_callback (_PyGObject_API->type_register_custom)
250 #define pyg_gerror_exception_check (_PyGObject_API->gerror_exception_check)
251 #define pyg_option_group_new (_PyGObject_API->option_group_new)
253 #define pyg_block_threads() G_STMT_START { \
254 if (_PyGObject_API->block_threads != NULL) \
255 (* _PyGObject_API->block_threads)(); \
257 #define pyg_unblock_threads() G_STMT_START { \
258 if (_PyGObject_API->unblock_threads != NULL) \
259 (* _PyGObject_API->unblock_threads)(); \
262 #define pyg_threads_enabled (_PyGObject_API->threads_enabled)
264 #define pyg_begin_allow_threads \
266 PyThreadState *_save = NULL; \
267 if (_PyGObject_API->threads_enabled) \
268 _save = PyEval_SaveThread();
269 #define pyg_end_allow_threads \
270 if (_PyGObject_API->threads_enabled) \
271 PyEval_RestoreThread(_save); \
277 * @req_major: minimum version major number, or -1
278 * @req_minor: minimum version minor number, or -1
279 * @req_micro: minimum version micro number, or -1
281 * Imports and initializes the 'gobject' python module. Can
282 * optionally check for a required minimum version if @req_major,
283 * @req_minor, and @req_micro are all different from -1.
285 * Returns: a new reference to the gobject module on success, NULL in
286 * case of failure (and raises ImportError).
288 static inline PyObject *
289 pygobject_init(int req_major, int req_minor, int req_micro)
291 PyObject *gobject, *cobject;
293 gobject = PyImport_ImportModule("gi._gobject");
295 if (PyErr_Occurred())
297 PyObject *type, *value, *traceback;
298 PyObject *py_orig_exc;
299 PyErr_Fetch(&type, &value, &traceback);
300 py_orig_exc = PyObject_Repr(value);
303 Py_XDECREF(traceback);
306 #if PY_VERSION_HEX < 0x03000000
307 PyErr_Format(PyExc_ImportError,
308 "could not import gobject (error was: %s)",
309 PyString_AsString(py_orig_exc));
312 /* Can not use PyErr_Format because it doesn't have
313 * a format string for dealing with PyUnicode objects
314 * like PyUnicode_FromFormat has
316 PyObject *errmsg = PyUnicode_FromFormat("could not import gobject (error was: %U)",
320 PyErr_SetObject(PyExc_ImportError,
324 /* if errmsg is NULL then we might have OOM
325 * PyErr should already be set and trying to
326 * return our own error would be futile
330 Py_DECREF(py_orig_exc);
332 PyErr_SetString(PyExc_ImportError,
333 "could not import gobject (no error given)");
338 cobject = PyObject_GetAttrString(gobject, "_PyGObject_API");
339 #if PY_VERSION_HEX >= 0x03000000
340 if (cobject && PyCapsule_CheckExact(cobject))
341 _PyGObject_API = (struct _PyGObject_Functions *) PyCapsule_GetPointer(cobject, "gobject._PyGObject_API");
344 if (cobject && PyCObject_Check(cobject))
345 _PyGObject_API = (struct _PyGObject_Functions *) PyCObject_AsVoidPtr(cobject);
348 PyErr_SetString(PyExc_ImportError,
349 "could not import gobject (could not find _PyGObject_API object)");
356 int found_major, found_minor, found_micro;
359 version = PyObject_GetAttrString(gobject, "pygobject_version");
361 PyErr_SetString(PyExc_ImportError,
362 "could not import gobject (version too old)");
366 if (!PyArg_ParseTuple(version, "iii",
367 &found_major, &found_minor, &found_micro)) {
368 PyErr_SetString(PyExc_ImportError,
369 "could not import gobject (version has invalid format)");
375 if (req_major != found_major ||
376 req_minor > found_minor ||
377 (req_minor == found_minor && req_micro > found_micro)) {
378 PyErr_Format(PyExc_ImportError,
379 "could not import gobject (version mismatch, %d.%d.%d is required, "
380 "found %d.%d.%d)", req_major, req_minor, req_micro,
381 found_major, found_minor, found_micro);
390 * PYLIST_FROMGLIBLIST:
391 * @type: the type of the GLib list e.g. #GList or #GSList
392 * @prefix: the prefix of functions that manipulate a list of the type
395 * A macro that creates a type specific code block which converts a GLib
396 * list (#GSList or #GList) to a Python list. The first two args of the macro
397 * are used to specify the type and list function prefix so that the type
398 * specific macros can be generated.
400 * The rest of the args are for the standard args for the type specific
401 * macro(s) created from this macro.
403 #define PYLIST_FROMGLIBLIST(type,prefix,py_list,list,item_convert_func,\
404 list_free,list_item_free) \
409 void (*glib_list_free)(type*) = list_free; \
410 GFunc glib_list_item_free = (GFunc)list_item_free; \
412 len = prefix##_length(list); \
413 py_list = PyList_New(len); \
414 for (i = 0; i < len; i++) { \
415 gpointer list_item = prefix##_nth_data(list, i); \
417 item = item_convert_func; \
418 PyList_SetItem(py_list, i, item); \
420 if (glib_list_item_free != NULL) \
421 prefix##_foreach(list, glib_list_item_free, NULL); \
422 if (glib_list_free != NULL) \
423 glib_list_free(list); \
428 * @py_list: the name of the Python list
430 * @list: the #GList to be converted to a Python list
432 * @item_convert_func: the function that converts a list item to a Python
433 * object. The function must refer to the list item using "@list_item" and
434 * must return a #PyObject* object. An example conversion function is:
436 * PyString_FromString(list_item)
438 * A more elaborate function is:
440 * pyg_boxed_new(GTK_TYPE_RECENT_INFO, list_item, TRUE, TRUE)
442 * @list_free: the name of a function that takes a single arg (the list) and
443 * frees its memory. Can be NULL if the list should not be freed. An example
448 * @list_item_free: the name of a #GFunc function that frees the memory used
449 * by the items in the list or %NULL if the list items do not have to be
450 * freed. A simple example is:
455 * A macro that adds code that converts a #GList to a Python list.
458 #define PYLIST_FROMGLIST(py_list,list,item_convert_func,list_free,\
460 PYLIST_FROMGLIBLIST(GList,g_list,py_list,list,item_convert_func,\
461 list_free,list_item_free)
465 * @py_list: the name of the Python list
467 * @list: the #GSList to be converted to a Python list
469 * @item_convert_func: the function that converts a list item to a Python
470 * object. The function must refer to the list item using "@list_item" and
471 * must return a #PyObject* object. An example conversion function is:
473 * PyString_FromString(list_item)
475 * A more elaborate function is:
477 * pyg_boxed_new(GTK_TYPE_RECENT_INFO, list_item, TRUE, TRUE)
479 * @list_free: the name of a function that takes a single arg (the list) and
480 * frees its memory. Can be %NULL if the list should not be freed. An example
485 * @list_item_free: the name of a #GFunc function that frees the memory used
486 * by the items in the list or %NULL if the list items do not have to be
487 * freed. A simple example is:
492 * A macro that adds code that converts a #GSList to a Python list.
495 #define PYLIST_FROMGSLIST(py_list,list,item_convert_func,list_free,\
497 PYLIST_FROMGLIBLIST(GSList,g_slist,py_list,list,item_convert_func,\
498 list_free,list_item_free)
502 * @type: the type of the GLib list e.g. GList or GSList
503 * @prefix: the prefix of functions that manipulate a list of the type
504 * given by type e.g. g_list or g_slist
506 * A macro that creates a type specific code block to be used to convert a
507 * Python list to a GLib list (GList or GSList). The first two args of the
508 * macro are used to specify the type and list function prefix so that the
509 * type specific macros can be generated.
511 * The rest of the args are for the standard args for the type specific
512 * macro(s) created from this macro.
514 #define PYLIST_ASGLIBLIST(type,prefix,py_list,list,check_func,\
515 convert_func,child_free_func,errormsg,errorreturn) \
518 Py_ssize_t i, n_list; \
519 GFunc glib_child_free_func = (GFunc)child_free_func; \
521 if (!(py_list = PySequence_Fast(py_list, ""))) { \
523 return errorreturn; \
525 n_list = PySequence_Fast_GET_SIZE(py_list); \
526 for (i = 0; i < n_list; i++) { \
527 PyObject *py_item = PySequence_Fast_GET_ITEM(py_list, i); \
530 if (glib_child_free_func) \
531 prefix##_foreach(list, glib_child_free_func, NULL); \
532 prefix##_free(list); \
533 Py_DECREF(py_list); \
535 return errorreturn; \
537 list = prefix##_prepend(list, convert_func); \
539 Py_DECREF(py_list); \
540 list = prefix##_reverse(list); \
545 * @py_list: the Python list to be converted
546 * @list: the #GList list to be converted
547 * @check_func: the expression that takes a #PyObject* arg (must be named
548 * @py_item) and returns an int value indicating if the Python object matches
549 * the required list item type (0 - %False or 1 - %True). An example is:
551 * (PyString_Check(py_item)||PyUnicode_Check(py_item))
553 * @convert_func: the function that takes a #PyObject* arg (must be named
554 * py_item) and returns a pointer to the converted list object. An example
557 * pygobject_get(py_item)
559 * @child_free_func: the name of a #GFunc function that frees a GLib list
560 * item or %NULL if the list item does not have to be freed. This function is
561 * used to help free the items in a partially created list if there is an
562 * error. An example is:
566 * @errormsg: a function that sets up a Python error message. An example is:
568 * PyErr_SetString(PyExc_TypeError, "strings must be a sequence of" "strings
569 * or unicode objects")
571 * @errorreturn: the value to return if an error occurs, e.g.:
576 * A macro that creates code that converts a Python list to a #GList. The
577 * returned list must be freed using the appropriate list free function when
578 * it's no longer needed. If an error occurs the child_free_func is used to
579 * release the memory used by the list items and then the list memory is
582 #define PYLIST_ASGLIST(py_list,list,check_func,convert_func,child_free_func,\
583 errormsg,errorreturn) \
584 PYLIST_ASGLIBLIST(GList,g_list,py_list,list,check_func,convert_func,\
585 child_free_func,errormsg,errorreturn)
589 * @py_list: the Python list to be converted
590 * @list: the #GSList list to be converted
591 * @check_func: the expression that takes a #PyObject* arg (must be named
592 * @py_item) and returns an int value indicating if the Python object matches
593 * the required list item type (0 - %False or 1 - %True). An example is:
595 * (PyString_Check(py_item)||PyUnicode_Check(py_item))
597 * @convert_func: the function that takes a #PyObject* arg (must be named
598 * py_item) and returns a pointer to the converted list object. An example
601 * pygobject_get(py_item)
603 * @child_free_func: the name of a #GFunc function that frees a GLib list
604 * item or %NULL if the list item does not have to be freed. This function is
605 * used to help free the items in a partially created list if there is an
606 * error. An example is:
610 * @errormsg: a function that sets up a Python error message. An example is:
612 * PyErr_SetString(PyExc_TypeError, "strings must be a sequence of" "strings
613 * or unicode objects")
615 * @errorreturn: the value to return if an error occurs, e.g.:
620 * A macro that creates code that converts a Python list to a #GSList. The
621 * returned list must be freed using the appropriate list free function when
622 * it's no longer needed. If an error occurs the child_free_func is used to
623 * release the memory used by the list items and then the list memory is
626 #define PYLIST_ASGSLIST(py_list,list,check_func,convert_func,child_free_func,\
627 errormsg,errorreturn) \
628 PYLIST_ASGLIBLIST(GSList,g_slist,py_list,list,check_func,convert_func,\
629 child_free_func,errormsg,errorreturn)
631 #endif /* !_INSIDE_PYGOBJECT_ */
635 #endif /* !_PYGOBJECT_H_ */