Author: thomas.heller
Date: Sat Jan 19 23:25:14 2008
New Revision: 60112
Modified:
python/branches/py3k-ctypes-pep3118/Lib/ctypes/test/test_pep3118.py
python/branches/py3k-ctypes-pep3118/Modules/_ctypes/_ctypes.c
Log:
Fully implement tp_asbuffer for pointer types.
Modified: python/branches/py3k-ctypes-pep3118/Lib/ctypes/test/test_pep3118.py
==============================================================================
--- python/branches/py3k-ctypes-pep3118/Lib/ctypes/test/test_pep3118.py
(original)
+++ python/branches/py3k-ctypes-pep3118/Lib/ctypes/test/test_pep3118.py Sat Jan
19 23:25:14 2008
@@ -47,5 +47,23 @@
self.failUnlessEqual((v.size, v.itemsize),
(struct_size, struct_size))
+ def test_pointertypes(self):
+ for fmt, typ in simple_types:
+ v = memoryview(POINTER(typ)())
+
+ # check the PEP3118 format string
+ self.failUnlessEqual(v.format, "&" + ENDIAN + fmt)
+
+ # shape and strides are None for integral types
+ self.failUnlessEqual((v.shape, v.strides),
+ (None, None))
+
+ # size and itemsize must be what struct.calcsize reports
+ # for pointers
+ struct_size = struct.calcsize("P")
+ self.failUnlessEqual((v.size, v.itemsize),
+ (struct_size, struct_size))
+
+
if __name__ == "__main__":
unittest.main()
Modified: python/branches/py3k-ctypes-pep3118/Modules/_ctypes/_ctypes.c
==============================================================================
--- python/branches/py3k-ctypes-pep3118/Modules/_ctypes/_ctypes.c
(original)
+++ python/branches/py3k-ctypes-pep3118/Modules/_ctypes/_ctypes.c Sat Jan
19 23:25:14 2008
@@ -635,6 +635,16 @@
return NULL;
}
+ if (proto) {
+ StgDictObject *itemdict = PyType_stgdict(proto);
+ assert(itemdict);
+ stgdict->format = alloc_format_string("&", itemdict->format);
+ if (stgdict->format == NULL) {
+ Py_DECREF((PyObject *)stgdict);
+ return NULL;
+ }
+ }
+
/* create the new instance (which is a class,
since we are a metatype!) */
result = (PyTypeObject *)PyType_Type.tp_new(type, args, kwds);
@@ -4659,7 +4669,7 @@
0, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
- &CData_as_buffer, /* tp_as_buffer */
+ &Simple_as_buffer, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
"XXX to be provided", /* tp_doc */
(traverseproc)CData_traverse, /* tp_traverse */
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