/* Wrap void* pointers to be passed between C modules */ #include "Python.h"  /* Declarations for objects of type PyCObject */ typedef void (*destructor1)(void *);typedef void (*destructor2)(void *, void*); typedef struct {    PyObject_HEAD    void *cobject;    void *desc;    void (*destructor)(void *);} PyCObject; PyObject *PyCObject_FromVoidPtr(void *cobj, void (*destr)(void *)){    PyCObject *self;     self = PyObject_NEW(PyCObject, &PyCObject_Type);    if (self == NULL)        return NULL;    self->cobject=cobj;    self->destructor=destr;    self->desc=NULL;     return (PyObject *)self;} PyObject *PyCObject_FromVoidPtrAndDesc(void *cobj, void *desc,                             void (*destr)(void *, void *)){    PyCObject *self;     if (!desc) {        PyErr_SetString(PyExc_TypeError,                        "PyCObject_FromVoidPtrAndDesc called with null"                        " description");        return NULL;    }    self = PyObject_NEW(PyCObject, &PyCObject_Type);    if (self == NULL)        return NULL;    self->cobject = cobj;    self->destructor = (destructor1)destr;    self->desc = desc;     return (PyObject *)self;} void *PyCObject_AsVoidPtr(PyObject *self){    if (self) {        if (self->ob_type == &PyCObject_Type)            return ((PyCObject *)self)->cobject;        PyErr_SetString(PyExc_TypeError,                        "PyCObject_AsVoidPtr with non-C-object");    }    if (!PyErr_Occurred())        PyErr_SetString(PyExc_TypeError,                        "PyCObject_AsVoidPtr called with null pointer");    return NULL;} void *PyCObject_GetDesc(PyObject *self){    if (self) {        if (self->ob_type == &PyCObject_Type)            return ((PyCObject *)self)->desc;        PyErr_SetString(PyExc_TypeError,                        "PyCObject_GetDesc with non-C-object");    }    if (!PyErr_Occurred())        PyErr_SetString(PyExc_TypeError,                        "PyCObject_GetDesc called with null pointer");    return NULL;} void *PyCObject_Import(char *module_name, char *name){    PyObject *m, *c;    void *r = NULL;     if ((m = PyImport_ImportModule(module_name))) {        if ((c = PyObject_GetAttrString(m,name))) {            r = PyCObject_AsVoidPtr(c);            Py_DECREF(c);	}        Py_DECREF(m);    }    return r;} intPyCObject_SetVoidPtr(PyObject *self, void *cobj){    PyCObject* cself = (PyCObject*)self;    if (cself == NULL || !PyCObject_Check(cself) ||	cself->destructor != NULL) {	PyErr_SetString(PyExc_TypeError, 			"Invalid call to PyCObject_SetVoidPtr");	return 0;    }    cself->cobject = cobj;    return 1;} static voidPyCObject_dealloc(PyCObject *self){    if (self->destructor) {        if(self->desc)            ((destructor2)(self->destructor))(self->cobject, self->desc);        else            (self->destructor)(self->cobject);    }    PyObject_DEL(self);}  PyDoc_STRVAR(PyCObject_Type__doc__,"C objects to be exported from one extension module to another\n\\n\C objects are used for communication between extension modules.  They\n\provide a way for an extension module to export a C interface to other\n\extension modules, so that extension modules can use the Python import\n\mechanism to link to one another."); PyTypeObject PyCObject_Type = {    PyObject_HEAD_INIT(&PyType_Type)    0,				/*ob_size*/    "PyCObject",		/*tp_name*/    sizeof(PyCObject),		/*tp_basicsize*/    0,				/*tp_itemsize*/    /* methods */    (destructor)PyCObject_dealloc, /*tp_dealloc*/    0,				/*tp_print*/    0,				/*tp_getattr*/    0,				/*tp_setattr*/    0,				/*tp_compare*/    0,				/*tp_repr*/    0,				/*tp_as_number*/    0,				/*tp_as_sequence*/    0,				/*tp_as_mapping*/    0,				/*tp_hash*/    0,				/*tp_call*/    0,				/*tp_str*/    0,				/*tp_getattro*/    0,				/*tp_setattro*/    0,				/*tp_as_buffer*/    0,				/*tp_flags*/    PyCObject_Type__doc__	/*tp_doc*/};