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/*
py/pyext - python external object for PD and MaxMSP
Copyright (c) 2002-2003 Thomas Grill (xovo@gmx.net)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
*/
#include "pyext.h"
#include "flinternal.h"
#ifndef USEFLEXTBINDING
t_class *pyext::px_class;
pyext::py_proxy *pyext::px_head,*pyext::px_tail;
void pyext::py_proxy::px_method(py_proxy *obj,const t_symbol *s,int argc,const t_atom *argv)
{
PY_LOCK
PyObject *args = MakePyArgs(s,AtomList(argc,argv),-1,obj->self != NULL);
PyObject *ret = PyObject_CallObject(obj->func,args);
if(!ret) {
PyErr_Print();
}
Py_XDECREF(ret);
PY_UNLOCK
}
#else
struct bounddata { PyObject *self,*func; };
bool pyext::boundmeth(flext_base *,const t_symbol *sym,int argc,const t_atom *argv,void *data)
{
bounddata *obj = (bounddata *)data;
PY_LOCK
PyObject *args = MakePyArgs(sym,AtomList(argc,argv),-1,obj->self != NULL);
PyObject *ret = PyObject_CallObject(obj->func,args);
if(!ret) {
PyErr_Print();
}
Py_XDECREF(ret);
PY_UNLOCK
return true;
}
#endif
PyObject *pyext::pyext_bind(PyObject *,PyObject *args)
{
PyObject *self,*meth;
C *name;
if(!PyArg_ParseTuple(args, "OsO:pyext_bind", &self,&name,&meth))
post("py/pyext - Wrong arguments!");
else if(!PyInstance_Check(self) || !(PyMethod_Check(meth) || PyFunction_Check(meth))) {
post("py/pyext - Wrong argument types!");
}
else {
const t_symbol *recv = MakeSymbol(name);
/*
if(GetBound(recv))
post("py/pyext - Symbol \"%s\" is already hooked",GetString(recv));
*/
// make a proxy object
if(PyMethod_Check(meth)) {
PyObject *no = PyObject_GetAttrString(meth,"__name__");
meth = PyObject_GetAttr(self,no);
Py_DECREF(no);
}
#ifndef USEFLEXTBINDING
py_proxy *px = (py_proxy *)object_new(px_class);
px->init(recv,self,meth);
// add it to the list
if(px_tail) px_tail->nxt = px;
else px_head = px;
px_tail = px;
// Do bind
pd_bind(&px->obj.ob_pd,(t_symbol *)recv);
#else
bounddata *data = new bounddata;
data->self = self;
data->func = meth;
GetThis(self)->BindMethod(recv,boundmeth,data);
#endif
Py_INCREF(self); // self is borrowed reference
}
Py_INCREF(Py_None);
return Py_None;
}
PyObject *pyext::pyext_unbind(PyObject *,PyObject *args)
{
PyObject *self,*meth;
C *name;
if(!PyArg_ParseTuple(args, "OsO:pyext_bind", &self,&name,&meth))
post("py/pyext - Wrong arguments!");
else if(!PyInstance_Check(self) || !(PyMethod_Check(meth) || PyFunction_Check(meth))) {
post("py/pyext - Wrong argument types!");
}
else {
const t_symbol *recv = MakeSymbol(name);
if(PyMethod_Check(meth)) {
PyObject *no = PyObject_GetAttrString(meth,"__name__");
meth = PyObject_GetAttr(self,no); // meth is given a new reference!
Py_DECREF(no);
}
#ifndef USEFLEXTBINDING
// search proxy object
py_proxy *pp = NULL,*px = px_head;
while(px) {
py_proxy *pn = px->nxt;
if(recv == px->name && self == px->self && meth == px->func) {
if(pp)
pp->nxt = pn;
else
px_head = pn;
if(!pn) px_tail = pp;
break;
}
else pp = px;
px = pn;
}
// do unbind
if(px) {
pd_unbind(&px->obj.ob_pd,(t_symbol *)recv);
object_free(&px->obj);
Py_DECREF(self);
if(PyMethod_Check(meth)) Py_DECREF(meth);
}
#else
void *data = NULL;
if(GetThis(self)->UnbindMethod(recv,boundmeth,&data)) {
bounddata *bdt = (bounddata *)data;
if(bdt) {
Py_DECREF(bdt->self);
if(PyMethod_Check(bdt->func)) Py_DECREF(bdt->func);
if(data) delete bdt;
}
}
#endif
}
Py_INCREF(Py_None);
return Py_None;
}
V pyext::ClearBinding()
{
#ifndef USEFLEXTBINDING
// search proxy object
py_proxy *pp = NULL,*px = px_head;
while(px) {
py_proxy *pn = px->nxt;
if(px->self == pyobj) {
if(pp)
pp->nxt = pn;
else
px_head = pn;
if(!pn) px_tail = pp;
Py_DECREF(px->self);
if(PyMethod_Check(px->func)) Py_DECREF(px->func);
pd_unbind(&px->obj.ob_pd,(t_symbol *)px->name);
object_free(&px->obj);
}
else pp = px;
px = pn;
}
#else
void *data = NULL;
const t_symbol *sym = NULL;
// unbind all
while(GetThis(pyobj)->UnbindMethod(sym,NULL,&data)) {
bounddata *bdt = (bounddata *)data;
if(bdt) {
Py_DECREF(bdt->self);
if(PyMethod_Check(bdt->func)) Py_DECREF(bdt->func);
if(data) delete bdt;
}
}
#endif
}
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