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/*
py/pyext - python external object for PD and MaxMSP
Copyright (c)2002-2005 Thomas Grill (gr@grrrr.org)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
*/
#include "main.h"
static PyObject *MakePyAtom(const t_atom &at)
{
if(flext::IsSymbol(at))
return pySymbol_FromSymbol(flext::GetSymbol(at));
else if(flext::CanbeInt(at) || flext::CanbeFloat(at)) {
// if a number can be an integer... let at be an integer!
int ival = flext::GetAInt(at);
double fval = flext::GetAFloat(at);
return (double)ival == fval?PyInt_FromLong(ival):PyFloat_FromDouble(fval);
}
// else if(flext::IsPointer(at)) return NULL; // not handled
/*
// these following should never happen
else if(flext::IsFloat(at)) return PyFloat_FromDouble((double)flext::GetFloat(at));
else if(flext::IsInt(at)) return PyInt_FromLong(flext::GetInt(at));
*/
return NULL;
}
PyObject *py::MakePyArgs(const t_symbol *s,int argc,const t_atom *argv,int inlet,bool withself)
{
PyObject *pArgs;
/*
if(!s && args.Count() == 1) {
pArgs = MakePyAtom(args[0]);
if(!pArgs)
post("py/pyext: cannot convert argument(s)");
}
else
*/
{
bool any = IsAnything(s);
pArgs = PyTuple_New(argc+(any?1:0)+(inlet >= 0?1:0));
int pix = 0;
if(inlet >= 0)
PyTuple_SetItem(pArgs, pix++, PyInt_FromLong(inlet));
int ix;
PyObject *tmp;
// if(!withself || argc < (any?1:2))
tmp = pArgs,ix = pix;
// else
// tmp = PyTuple_New(argc+(any?1:0)),ix = 0;
if(any)
PyTuple_SET_ITEM(tmp, ix++, pySymbol_FromSymbol(s));
for(int i = 0; i < argc; ++i) {
PyObject *pValue = MakePyAtom(argv[i]);
if(!pValue) {
post("py/pyext: cannot convert argument %i",any?i+1:i);
continue;
}
/* pValue reference stolen here: */
PyTuple_SET_ITEM(tmp, ix++, pValue);
}
if(tmp != pArgs) {
PyTuple_SET_ITEM(pArgs, pix++, tmp);
#if PY_VERSION_HEX >= 0x02020000
_PyTuple_Resize(&pArgs,pix);
#else
_PyTuple_Resize(&pArgs,pix,0);
#endif
}
}
return pArgs;
}
flext::AtomList *py::GetPyArgs(PyObject *pValue,PyObject **self)
{
if(pValue == NULL) return NULL;
AtomList *ret = NULL;
// analyze return value or tuple
int rargc = 0;
bool ok = true;
retval tp = nothing;
if(PyString_Check(pValue)) {
rargc = 1;
tp = atom;
}
else if(PySequence_Check(pValue)) {
rargc = PySequence_Size(pValue);
tp = sequ;
}
else if(pValue == Py_None)
Py_DECREF(pValue);
else {
rargc = 1;
tp = atom;
}
ret = new AtomList(rargc);
for(int ix = 0; ix < rargc; ++ix) {
PyObject *arg;
if(tp == sequ)
arg = PySequence_GetItem(pValue,ix); // new reference
else
arg = pValue;
if(PyInt_Check(arg)) SetInt((*ret)[ix],PyInt_AsLong(arg));
else if(PyLong_Check(arg)) SetInt((*ret)[ix],PyLong_AsLong(arg));
else if(PyFloat_Check(arg)) SetFloat((*ret)[ix],(float)PyFloat_AsDouble(arg));
else if(pySymbol_Check(arg)) SetSymbol((*ret)[ix],pySymbol_AS_SYMBOL(arg));
else if(PyString_Check(arg)) SetString((*ret)[ix],PyString_AS_STRING(arg));
else if(ix == 0 && self && PyInstance_Check(arg)) {
// assumed to be self ... that should be checked _somehow_ !!!
Py_INCREF(arg);
*self = arg;
}
else {
PyObject *tp = PyObject_Type(arg);
PyObject *stp = tp?PyObject_Str(tp):NULL;
char *tmp = "";
if(stp) tmp = PyString_AS_STRING(stp);
post("py/pyext: Could not convert argument %s",tmp);
Py_XDECREF(stp);
Py_XDECREF(tp);
ok = false;
}
if(tp == sequ) Py_DECREF(arg);
}
if(!ok) {
delete ret;
ret = NULL;
}
return ret;
}
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