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Commit 511c30ee authored by Jim Fulton's avatar Jim Fulton
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Fixed refcount bug. 

Added logic so:  Missing.Value.spam() returns Missing.Value.
Added logic to make Missing.Value picklable.
parent c634aa8f
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Showing with 160 additions and 46 deletions
lib/Components/ExtensionClass/Missing.c
View file @ 511c30ee
......@@ -53,7 +53,7 @@
static char Missing_module_documentation[] =
""
"\n$Id: Missing.c,v 1.2 1997/07/02 20:19:37 jim Exp $"
"\n$Id: Missing.c,v 1.3 1997/09/17 22:49:35 jim Exp $"
;
#include "ExtensionClass.h"
......@@ -64,6 +64,9 @@ typedef struct {
PyObject_HEAD
} Missing;
static PyObject *vname=0, *Missing_dot_Value=0, *empty_string=0, *reduce=0;
static PyObject *theValue;
static void
Missing_dealloc(Missing *self)
{
......@@ -73,13 +76,15 @@ Missing_dealloc(Missing *self)
static PyObject *
Missing_repr(Missing *self)
{
return PyString_FromString("Missing.Value");
Py_INCREF(Missing_dot_Value);
return Missing_dot_Value;
}
static PyObject *
Missing_str(Missing *self)
{
return PyString_FromString("");
Py_INCREF(empty_string);
return empty_string;
}
/* Code to access Missing objects as numbers */
......@@ -87,18 +92,21 @@ Missing_str(Missing *self)
static PyObject *
Missing_bin(PyObject *v, PyObject *w)
{
Py_INCREF(v);
return v;
}
static PyObject *
Missing_pow(PyObject *v, PyObject *w, PyObject *z)
{
Py_INCREF(v);
return v;
}
static PyObject *
Missing_un(PyObject *v)
{
Py_INCREF(v);
return v;
}
......@@ -185,13 +193,50 @@ static PyNumberMethods Missing_as_number = {
/* ------------------------------------------------------- */
static char Missingtype__doc__[] =
"Represent totally unknown quantities\n"
"\n"
"Missing values are used to represent numberic quantities that are\n"
"unknown. They support all mathematical operations except\n"
"conversions by returning themselves.\n"
;
static PyObject *
Missing_reduce(PyObject *self, PyObject *args, PyObject *kw)
{
if(self==theValue)
{
Py_INCREF(vname);
return vname;
}
return Py_BuildValue("O()",self->ob_type);
}
static struct PyMethodDef reduce_ml[] = {
{"__reduce__", (PyCFunction)Missing_reduce, 1,
"Return a missing value reduced to standard python objects"
}
};
static PyObject *
Missing_getattr(PyObject *self, PyObject *name)
{
char *c;
if(!(c=PyString_AsString(name))) return NULL;
if(*c=='_' && strcmp(c,"__reduce__")==0)
{
if(self==theValue)
{
Py_INCREF(reduce);
return reduce;
}
return PyCFunction_New(reduce_ml, self);
}
Py_INCREF(self);
return self;
}
static PyObject *
Missing_call(PyObject *self, PyObject *args, PyObject *kw)
{
Py_INCREF(self);
return self;
}
static PyExtensionClass MissingType = {
PyObject_HEAD_INIT(NULL)
......@@ -210,14 +255,18 @@ static PyExtensionClass MissingType = {
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
(hashfunc)0, /*tp_hash*/
(ternaryfunc)0, /*tp_call*/
(ternaryfunc)Missing_call, /*tp_call*/
(reprfunc)Missing_str, /*tp_str*/
(getattrofunc)0, /*tp_getattro*/
(getattrofunc)Missing_getattr, /*tp_getattro*/
(setattrofunc)0, /*tp_setattro*/
/* Space for future expansion */
0L,0L,
Missingtype__doc__, /* Documentation string */
"Represent totally unknown quantities\n"
"\n"
"Missing values are used to represent numberic quantities that are\n"
"unknown. They support all mathematical operations except\n"
"conversions by returning themselves.\n",
METHOD_CHAIN(NULL)
};
......@@ -231,13 +280,16 @@ static struct PyMethodDef Module_Level__methods[] = {
{NULL, (PyCFunction)NULL, 0, NULL} /* sentinel */
};
/* Initialization function for the module (*must* be called initMissing) */
void
initMissing()
{
PyObject *m, *d;
char *rev="$Revision: 1.2 $";
char *rev="$Revision: 1.3 $";
if(! ((vname=PyString_FromString("V"))
&& (Missing_dot_Value=PyString_FromString("Missing.Value"))
&& (empty_string=PyString_FromString(""))
)) return;
/* Create the module and add the functions */
m = Py_InitModule4("Missing", Module_Level__methods,
......@@ -247,15 +299,16 @@ initMissing()
/* Add some symbolic constants to the module */
d = PyModule_GetDict(m);
PyExtensionClass_Export(d,"Missing",MissingType);
PyDict_SetItemString(d, "__version__",
PyString_FromStringAndSize(rev+11,strlen(rev+11)-2));
PyDict_SetItemString(d, "Value",
PyObject_CallObject((PyObject*)&MissingType, NULL));
PyExtensionClass_Export(d,"Missing",MissingType);
theValue=PyObject_CallObject((PyObject*)&MissingType, NULL);
reduce=PyCFunction_New(reduce_ml, theValue);
PyDict_SetItemString(d, "Value", theValue);
PyDict_SetItemString(d, "V", theValue);
/* Check for errors */
if (PyErr_Occurred())
......@@ -266,11 +319,15 @@ initMissing()
Revision Log:
$Log: Missing.c,v $
Revision 1.3 1997/09/17 22:49:35 jim
Fixed refcount bug.
Added logic so: Missing.Value.spam() returns Missing.Value.
Added logic to make Missing.Value picklable.
Revision 1.2 1997/07/02 20:19:37 jim
Got rid of unused macros and ErrorObject.
Revision 1.1 1997/07/01 21:36:34 jim
*** empty log message ***
*****************************************************************************/
lib/Components/ExtensionClass/src/Missing.c
View file @ 511c30ee
......@@ -53,7 +53,7 @@
static char Missing_module_documentation[] =
""
"\n$Id: Missing.c,v 1.2 1997/07/02 20:19:37 jim Exp $"
"\n$Id: Missing.c,v 1.3 1997/09/17 22:49:35 jim Exp $"
;
#include "ExtensionClass.h"
......@@ -64,6 +64,9 @@ typedef struct {
PyObject_HEAD
} Missing;
static PyObject *vname=0, *Missing_dot_Value=0, *empty_string=0, *reduce=0;
static PyObject *theValue;
static void
Missing_dealloc(Missing *self)
{
......@@ -73,13 +76,15 @@ Missing_dealloc(Missing *self)
static PyObject *
Missing_repr(Missing *self)
{
return PyString_FromString("Missing.Value");
Py_INCREF(Missing_dot_Value);
return Missing_dot_Value;
}
static PyObject *
Missing_str(Missing *self)
{
return PyString_FromString("");
Py_INCREF(empty_string);
return empty_string;
}
/* Code to access Missing objects as numbers */
......@@ -87,18 +92,21 @@ Missing_str(Missing *self)
static PyObject *
Missing_bin(PyObject *v, PyObject *w)
{
Py_INCREF(v);
return v;
}
static PyObject *
Missing_pow(PyObject *v, PyObject *w, PyObject *z)
{
Py_INCREF(v);
return v;
}
static PyObject *
Missing_un(PyObject *v)
{
Py_INCREF(v);
return v;
}
......@@ -185,13 +193,50 @@ static PyNumberMethods Missing_as_number = {
/* ------------------------------------------------------- */
static char Missingtype__doc__[] =
"Represent totally unknown quantities\n"
"\n"
"Missing values are used to represent numberic quantities that are\n"
"unknown. They support all mathematical operations except\n"
"conversions by returning themselves.\n"
;
static PyObject *
Missing_reduce(PyObject *self, PyObject *args, PyObject *kw)
{
if(self==theValue)
{
Py_INCREF(vname);
return vname;
}
return Py_BuildValue("O()",self->ob_type);
}
static struct PyMethodDef reduce_ml[] = {
{"__reduce__", (PyCFunction)Missing_reduce, 1,
"Return a missing value reduced to standard python objects"
}
};
static PyObject *
Missing_getattr(PyObject *self, PyObject *name)
{
char *c;
if(!(c=PyString_AsString(name))) return NULL;
if(*c=='_' && strcmp(c,"__reduce__")==0)
{
if(self==theValue)
{
Py_INCREF(reduce);
return reduce;
}
return PyCFunction_New(reduce_ml, self);
}
Py_INCREF(self);
return self;
}
static PyObject *
Missing_call(PyObject *self, PyObject *args, PyObject *kw)
{
Py_INCREF(self);
return self;
}
static PyExtensionClass MissingType = {
PyObject_HEAD_INIT(NULL)
......@@ -210,14 +255,18 @@ static PyExtensionClass MissingType = {
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
(hashfunc)0, /*tp_hash*/
(ternaryfunc)0, /*tp_call*/
(ternaryfunc)Missing_call, /*tp_call*/
(reprfunc)Missing_str, /*tp_str*/
(getattrofunc)0, /*tp_getattro*/
(getattrofunc)Missing_getattr, /*tp_getattro*/
(setattrofunc)0, /*tp_setattro*/
/* Space for future expansion */
0L,0L,
Missingtype__doc__, /* Documentation string */
"Represent totally unknown quantities\n"
"\n"
"Missing values are used to represent numberic quantities that are\n"
"unknown. They support all mathematical operations except\n"
"conversions by returning themselves.\n",
METHOD_CHAIN(NULL)
};
......@@ -231,13 +280,16 @@ static struct PyMethodDef Module_Level__methods[] = {
{NULL, (PyCFunction)NULL, 0, NULL} /* sentinel */
};
/* Initialization function for the module (*must* be called initMissing) */
void
initMissing()
{
PyObject *m, *d;
char *rev="$Revision: 1.2 $";
char *rev="$Revision: 1.3 $";
if(! ((vname=PyString_FromString("V"))
&& (Missing_dot_Value=PyString_FromString("Missing.Value"))
&& (empty_string=PyString_FromString(""))
)) return;
/* Create the module and add the functions */
m = Py_InitModule4("Missing", Module_Level__methods,
......@@ -247,15 +299,16 @@ initMissing()
/* Add some symbolic constants to the module */
d = PyModule_GetDict(m);
PyExtensionClass_Export(d,"Missing",MissingType);
PyDict_SetItemString(d, "__version__",
PyString_FromStringAndSize(rev+11,strlen(rev+11)-2));
PyDict_SetItemString(d, "Value",
PyObject_CallObject((PyObject*)&MissingType, NULL));
PyExtensionClass_Export(d,"Missing",MissingType);
theValue=PyObject_CallObject((PyObject*)&MissingType, NULL);
reduce=PyCFunction_New(reduce_ml, theValue);
PyDict_SetItemString(d, "Value", theValue);
PyDict_SetItemString(d, "V", theValue);
/* Check for errors */
if (PyErr_Occurred())
......@@ -266,11 +319,15 @@ initMissing()
Revision Log:
$Log: Missing.c,v $
Revision 1.3 1997/09/17 22:49:35 jim
Fixed refcount bug.
Added logic so: Missing.Value.spam() returns Missing.Value.
Added logic to make Missing.Value picklable.
Revision 1.2 1997/07/02 20:19:37 jim
Got rid of unused macros and ErrorObject.
Revision 1.1 1997/07/01 21:36:34 jim
*** empty log message ***
*****************************************************************************/
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