Removed the out of date and no-longer-referenced xxobject.c example

type implementation.  Note that this same example lives in
Modules/xxmodule.c. (It is just as out of date there.)

Objects/xxobject.c

-
-/* Use this file as a template to start implementing a new object type.
-   If your objects will be called foobar, start by copying this file to
-   foobarobject.c, changing all occurrences of xx to foobar and all
-   occurrences of Xx to Foobar.  You will probably want to delete all
-   references to 'x_attr' and add your own types of attributes
-   instead.  Maybe you want to name your local variables other than
-   'xp'.  If your object type is needed in other files, you'll have to
-   create a file "foobarobject.h"; see intobject.h for an example. */
-
-
-/* Xx objects */
-
-#include "Python.h"
-
-typedef struct {
-	PyObject_HEAD
-	PyObject	*x_attr;	/* Attributes dictionary */
-} xxobject;
-
-static PyTypeObject Xxtype;
-
-#define is_xxobject(v)		((v)->ob_type == &Xxtype)
-
-static xxobject *
-newxxobject(PyObject *arg)
-{
-	xxobject *xp;
-	xp = PyObject_New(xxobject, &Xxtype);
-	if (xp == NULL)
-		return NULL;
-	xp->x_attr = NULL;
-	return xp;
-}
-
-/* Xx methods */
-
-static void
-xx_dealloc(xxobject *xp)
-{
-	Py_XDECREF(xp->x_attr);
-	PyObject_Del(xp);
-}
-
-static PyObject *
-xx_demo(xxobject *self, PyObject *args)
-{
-	if (!PyArg_ParseTuple(args, ":demo"))
-		return NULL;
-	Py_INCREF(Py_None);
-	return Py_None;
-}
-
-static PyMethodDef xx_methods[] = {
-	{"demo",	(PyCFunction)xx_demo,	METH_VARARGS},
-	{NULL,		NULL}		/* sentinel */
-};
-
-static PyObject *
-xx_getattr(xxobject *xp, char *name)
-{
-	if (xp->x_attr != NULL) {
-		PyObject *v = PyDict_GetItemString(xp->x_attr, name);
-		if (v != NULL) {
-			Py_INCREF(v);
-			return v;
-		}
-	}
-	return Py_FindMethod(xx_methods, (PyObject *)xp, name);
-}
-
-static int
-xx_setattr(xxobject *xp, char *name, PyObject *v)
-{
-	if (xp->x_attr == NULL) {
-		xp->x_attr = PyDict_New();
-		if (xp->x_attr == NULL)
-			return -1;
-	}
-	if (v == NULL) {
-		int rv = PyDict_DelItemString(xp->x_attr, name);
-		if (rv < 0)
-			PyErr_SetString(PyExc_AttributeError,
-                                        "delete non-existing xx attribute");
-		return rv;
-	}
-	else
-		return PyDict_SetItemString(xp->x_attr, name, v);
-}
-
-static PyTypeObject Xxtype = {
-	PyObject_HEAD_INIT(&PyType_Type)
-	0,			/*ob_size*/
-	"xx",			/*tp_name*/
-	sizeof(xxobject),	/*tp_basicsize*/
-	0,			/*tp_itemsize*/
-	/* methods */
-	(destructor)xx_dealloc, /*tp_dealloc*/
-	0,			/*tp_print*/
-	(getattrfunc)xx_getattr, /*tp_getattr*/
-	(setattrfunc)xx_setattr, /*tp_setattr*/
-	0,			/*tp_compare*/
-	0,			/*tp_repr*/
-	0,			/*tp_as_number*/
-	0,			/*tp_as_sequence*/
-	0,			/*tp_as_mapping*/
-	0,			/*tp_hash*/
-};