Staging
v0.8.1
v0.8.1
https://github.com/python/cpython
Tip revision: b3570e83e5da8bc51d7167bd55bb9aa42a033032 authored by cvs2svn on 02 March 2001, 19:48:06 UTC
This commit was manufactured by cvs2svn to create tag 'r21b1'.
This commit was manufactured by cvs2svn to create tag 'r21b1'.
Tip revision: b3570e8
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 by 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;
staticforward 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*/
};