static PyObject *
_lookup(lookup *self,
PyObject *required, PyObject *provided, PyObject *name,
PyObject *default_)
{
PyObject *result, *key, *cache;
cache = _getcache(self, provided, name);
if (cache == NULL)
return NULL;
required = tuplefy(required);
if (required == NULL)
return NULL;
if (PyTuple_GET_SIZE(required) == 1)
key = PyTuple_GET_ITEM(required, 0);
else
key = required;
result = PyDict_GetItem(cache, key);
if (result == NULL)
{
int status;
result = PyObject_CallMethodObjArgs(OBJECT(self), str_uncached_lookup,
required, provided, name, NULL);
if (result == NULL)
{
Py_DECREF(required);
return NULL;
}
status = PyDict_SetItem(cache, key, result);
Py_DECREF(required);
if (status < 0)
{
Py_DECREF(result);
return NULL;
}
}
else
{
Py_INCREF(result);
Py_DECREF(required);
}
if (result == Py_None && default_ != NULL)
{
Py_DECREF(Py_None);
Py_INCREF(default_);
return default_;
}
return result;
}
/*
def subscriptions(self, required, provided):
cache = self._scache.get(provided)
if cache is None:
cache = {}
self._scache[provided] = cache
required = tuple(required)
result = cache.get(required, _not_in_mapping)
if result is _not_in_mapping:
result = self._uncached_subscriptions(required, provided)
cache[required] = result
return result
*/
static PyObject *
_subscriptions(lookup *self, PyObject *required, PyObject *provided)
{
PyObject *cache, *result;
ASSURE_DICT(self->_scache);
cache = _subcache(self->_scache, provided);
if (cache == NULL)
return NULL;
required = tuplefy(required);
if (required == NULL)
return NULL;
result = PyDict_GetItem(cache, required);
if (result == NULL)
{
int status;
result = PyObject_CallMethodObjArgs(
OBJECT(self), str_uncached_subscriptions,
required, provided, NULL);
if (result == NULL)
{
Py_DECREF(required);
return NULL;
}
status = PyDict_SetItem(cache, required, result);
Py_DECREF(required);
if (status < 0)
{
Py_DECREF(result);
return NULL;
}
}
else
{
Py_INCREF(result);
Py_DECREF(required);
}
return result;
}
static PyObject *
_lookup(lookup *self,
PyObject *required, PyObject *provided, PyObject *name,
PyObject *default_)
{
PyObject *result, *key, *cache;
#ifdef PY3K
if ( name && !PyUnicode_Check(name) )
#else
if ( name && !PyString_Check(name) && !PyUnicode_Check(name) )
#endif
{
PyErr_SetString(PyExc_ValueError,
"name is not a string or unicode");
return NULL;
}
cache = _getcache(self, provided, name);
if (cache == NULL)
return NULL;
required = tuplefy(required);
if (required == NULL)
return NULL;
if (PyTuple_GET_SIZE(required) == 1)
key = PyTuple_GET_ITEM(required, 0);
else
key = required;
result = PyDict_GetItem(cache, key);
if (result == NULL)
{
int status;
result = PyObject_CallMethodObjArgs(OBJECT(self), str_uncached_lookup,
required, provided, name, NULL);
if (result == NULL)
{
Py_DECREF(required);
return NULL;
}
status = PyDict_SetItem(cache, key, result);
Py_DECREF(required);
if (status < 0)
{
Py_DECREF(result);
return NULL;
}
}
else
{
Py_INCREF(result);
Py_DECREF(required);
}
if (result == Py_None && default_ != NULL)
{
Py_DECREF(Py_None);
Py_INCREF(default_);
return default_;
}
return result;
}
