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PythonReference.hh
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PythonReference.hh
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#ifndef NPSTAT_PYTHONREFERENCE_HH_
#define NPSTAT_PYTHONREFERENCE_HH_
#include "geners/AbsReference.hh"
#include "geners/binaryIO.hh"
#include "geners/IOException.hh"
#include "npstat/wrap/PyClassId.hh"
#include "npstat/wrap/pickle_item.hh"
namespace gs {
class Ref_PyObject : public AbsReference
{
public:
inline Ref_PyObject(AbsArchive& ar, const unsigned long long itemId)
: AbsReference(ar, ClassId::makeId<PyObject>(),
"gs::Single", itemId) {}
inline Ref_PyObject(AbsArchive& ar, const char* name,
const char* category)
: AbsReference(ar, ClassId::makeId<PyObject>(),
"gs::Single", name, category) {}
inline Ref_PyObject(AbsArchive& ar, const SearchSpecifier& namePattern,
const SearchSpecifier& categoryPattern)
: AbsReference(ar, ClassId::makeId<PyObject>(), "gs::Single",
namePattern, categoryPattern) {}
inline virtual ~Ref_PyObject() {}
// Method to retrieve the item
PyObject* retrieve(unsigned long index) const
{
const unsigned long long itemId = this->id(index);
assert(itemId);
std::istream& is = this->positionInputStream(itemId);
unsigned long sz = 0;
read_pod(is, &sz);
PyObject* str = PyBytes_FromStringAndSize((const char *)0, sz);
//
// Now, we own "str" and must DECREF it before returning
// from this scope
//
if (PyErr_Occurred())
{
Py_XDECREF(str);
PyErr_Print();
throw IOInvalidData("In gs::Ref_PyObject::retrieve: "
"failed to create a read buffer");
}
char* data = PyBytes_AsString(str);
if (sz)
read_pod_array(is, data, sz);
if (is.fail())
{
Py_DECREF(str);
throw IOInvalidData("In gs::Ref_PyObject::retrieve: "
"failed to read object data");
}
PyObject* p = npstat::unpickle_item(str);
Py_DECREF(str);
if (PyErr_Occurred())
{
Py_XDECREF(p);
PyErr_Print();
throw IOInvalidData("In gs::Ref_PyObject::retrieve: "
"failed to unpickle object data");
}
return p;
}
inline PyObject* getValue(unsigned long index) const
{
return retrieve(index);
}
private:
Ref_PyObject();
};
}
#endif // NPSTAT_PYTHONREFERENCE_HH_

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