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- /***********************************************************
- Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
- The Netherlands.
-
- All Rights Reserved
-
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- provided that the above copyright notice appear in all copies and that
- both that copyright notice and this permission notice appear in
- supporting documentation, and that the names of Stichting Mathematisch
- Centrum or CWI or Corporation for National Research Initiatives or
- CNRI not be used in advertising or publicity pertaining to
- distribution of the software without specific, written prior
- permission.
-
- While CWI is the initial source for this software, a modified version
- is made available by the Corporation for National Research Initiatives
- (CNRI) at the Internet address ftp://ftp.python.org.
-
- STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
- REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
- MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
- CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
- DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- PERFORMANCE OF THIS SOFTWARE.
-
- ******************************************************************/
-
- /* 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(arg)
- 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(xp)
- xxobject *xp;
- {
- Py_XDECREF(xp->x_attr);
- PyMem_DEL(xp);
- }
-
- static PyObject *
- xx_demo(self, args)
- xxobject *self;
- PyObject *args;
- {
- if (!PyArg_NoArgs(args))
- return NULL;
- Py_INCREF(Py_None);
- return Py_None;
- }
-
- static Py_MethodDef xx_methods[] = {
- {"demo", (PyCFunction)xx_demo},
- {NULL, NULL} /* sentinel */
- };
-
- static PyObject *
- xx_getattr(xp, name)
- 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(xp, name, v)
- 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*/
- };
-