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-rw-r--r--Modules/Setup.dist2
-rw-r--r--Modules/cPickle.c4
-rw-r--r--Modules/config.c.in2
-rw-r--r--Modules/xxsubtype.c233
4 files changed, 240 insertions, 1 deletions
diff --git a/Modules/Setup.dist b/Modules/Setup.dist
index 9114414..e9c2a94 100644
--- a/Modules/Setup.dist
+++ b/Modules/Setup.dist
@@ -464,3 +464,5 @@ GLHACK=-Dclear=__GLclear
# Example -- included for reference only:
# xx xxmodule.c
+# Another example -- the 'xxsubtype' module shows C-level subtyping in action
+xxsubtype xxsubtype.c
diff --git a/Modules/cPickle.c b/Modules/cPickle.c
index e3cc58d..b27339f 100644
--- a/Modules/cPickle.c
+++ b/Modules/cPickle.c
@@ -1869,6 +1869,10 @@ save(Picklerobject *self, PyObject *args, int pers_save) {
res = save_tuple(self, args);
goto finally;
}
+ if (type == &PyType_Type) {
+ res = save_global(self, args, NULL);
+ goto finally;
+ }
break;
case 'l':
diff --git a/Modules/config.c.in b/Modules/config.c.in
index 5a5878f..0d5e8b0 100644
--- a/Modules/config.c.in
+++ b/Modules/config.c.in
@@ -37,7 +37,7 @@ struct _inittab _PyImport_Inittab[] = {
{"__main__", NULL},
{"__builtin__", NULL},
{"sys", NULL},
- {"exceptions", init_exceptions},
+ {"exceptions", NULL},
/* Sentinel */
{0, 0}
diff --git a/Modules/xxsubtype.c b/Modules/xxsubtype.c
new file mode 100644
index 0000000..60d8c7d
--- /dev/null
+++ b/Modules/xxsubtype.c
@@ -0,0 +1,233 @@
+#include "Python.h"
+
+/* Examples showing how to subtype the builtin list and dict types from C. */
+
+/* spamlist -- a list subtype */
+
+typedef struct {
+ PyListObject list;
+ int state;
+} spamlistobject;
+
+static PyObject *
+spamlist_getstate(spamlistobject *self, PyObject *args)
+{
+ if (!PyArg_ParseTuple(args, ":getstate"))
+ return NULL;
+ return PyInt_FromLong(self->state);
+}
+
+static PyObject *
+spamlist_setstate(spamlistobject *self, PyObject *args)
+{
+ int state;
+
+ if (!PyArg_ParseTuple(args, "i:setstate", &state))
+ return NULL;
+ self->state = state;
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyMethodDef spamlist_methods[] = {
+ {"getstate", (PyCFunction)spamlist_getstate, METH_VARARGS,
+ "getstate() -> state"},
+ {"setstate", (PyCFunction)spamlist_setstate, METH_VARARGS,
+ "setstate(state)"},
+ {NULL, NULL},
+};
+
+staticforward PyTypeObject spamlist_type;
+
+static int
+spamlist_init(spamlistobject *self, PyObject *args, PyObject *kwds)
+{
+ if (PyList_Type.tp_init((PyObject *)self, args, kwds) < 0)
+ return -1;
+ self->state = 0;
+ return 0;
+}
+
+static PyTypeObject spamlist_type = {
+ PyObject_HEAD_INIT(&PyType_Type)
+ 0,
+ "spamlist",
+ sizeof(spamlistobject),
+ 0,
+ 0, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ 0, /* tp_compare */
+ 0, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ 0, /* tp_call */
+ 0, /* tp_str */
+ 0, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
+ 0, /* tp_doc */
+ 0, /* tp_traverse */
+ 0, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ spamlist_methods, /* tp_methods */
+ 0, /* tp_members */
+ 0, /* tp_getset */
+ &PyList_Type, /* tp_base */
+ 0, /* tp_dict */
+ 0, /* tp_descr_get */
+ 0, /* tp_descr_set */
+ 0, /* tp_dictoffset */
+ (initproc)spamlist_init, /* tp_init */
+ 0, /* tp_alloc */
+ 0, /* tp_new */
+};
+
+/* spamdict -- a dict subtype */
+
+typedef struct {
+ PyDictObject dict;
+ int state;
+} spamdictobject;
+
+static PyObject *
+spamdict_getstate(spamdictobject *self, PyObject *args)
+{
+ if (!PyArg_ParseTuple(args, ":getstate"))
+ return NULL;
+ return PyInt_FromLong(self->state);
+}
+
+static PyObject *
+spamdict_setstate(spamdictobject *self, PyObject *args)
+{
+ int state;
+
+ if (!PyArg_ParseTuple(args, "i:setstate", &state))
+ return NULL;
+ self->state = state;
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyMethodDef spamdict_methods[] = {
+ {"getstate", (PyCFunction)spamdict_getstate, METH_VARARGS,
+ "getstate() -> state"},
+ {"setstate", (PyCFunction)spamdict_setstate, METH_VARARGS,
+ "setstate(state)"},
+ {NULL, NULL},
+};
+
+staticforward PyTypeObject spamdict_type;
+
+static int
+spamdict_init(spamdictobject *self, PyObject *args, PyObject *kwds)
+{
+ if (PyDict_Type.tp_init((PyObject *)self, args, kwds) < 0)
+ return -1;
+ self->state = 0;
+ return 0;
+}
+
+static PyTypeObject spamdict_type = {
+ PyObject_HEAD_INIT(&PyType_Type)
+ 0,
+ "spamdict",
+ sizeof(spamdictobject),
+ 0,
+ 0, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ 0, /* tp_compare */
+ 0, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ 0, /* tp_call */
+ 0, /* tp_str */
+ 0, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
+ 0, /* tp_doc */
+ 0, /* tp_traverse */
+ 0, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ spamdict_methods, /* tp_methods */
+ 0, /* tp_members */
+ 0, /* tp_getset */
+ &PyDict_Type, /* tp_base */
+ 0, /* tp_dict */
+ 0, /* tp_descr_get */
+ 0, /* tp_descr_set */
+ 0, /* tp_dictoffset */
+ (initproc)spamdict_init, /* tp_init */
+ 0, /* tp_alloc */
+ 0, /* tp_new */
+};
+
+PyObject *
+spam_bench(PyObject *self, PyObject *args)
+{
+ PyObject *obj, *name, *res;
+ int n = 1000;
+ time_t t0, t1;
+
+ if (!PyArg_ParseTuple(args, "OS|i", &obj, &name, &n))
+ return NULL;
+ t0 = clock();
+ while (--n >= 0) {
+ res = PyObject_GetAttr(obj, name);
+ if (res == NULL)
+ return NULL;
+ Py_DECREF(res);
+ }
+ t1 = clock();
+ return PyFloat_FromDouble((double)(t1-t0) / CLOCKS_PER_SEC);
+}
+
+static PyMethodDef xxsubtype_functions[] = {
+ {"bench", spam_bench, METH_VARARGS},
+ {NULL, NULL} /* sentinel */
+};
+
+DL_EXPORT(void)
+initxxsubtype(void)
+{
+ PyObject *m, *d;
+
+ m = Py_InitModule("xxsubtype", xxsubtype_functions);
+ if (m == NULL)
+ return;
+
+ if (PyType_InitDict(&spamlist_type) < 0)
+ return;
+ if (PyType_InitDict(&spamdict_type) < 0)
+ return;
+
+ d = PyModule_GetDict(m);
+ if (d == NULL)
+ return;
+
+ Py_INCREF(&spamlist_type);
+ if (PyDict_SetItemString(d, "spamlist",
+ (PyObject *) &spamlist_type) < 0)
+ return;
+
+ Py_INCREF(&spamdict_type);
+ if (PyDict_SetItemString(d, "spamdict",
+ (PyObject *) &spamdict_type) < 0)
+ return;
+}
generated by cgit v0.12 at 2024-11-27 10:47:06 (GMT)