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import py
from pypy.module.cpyext.pyobject import (
PyObject, PyObjectP, make_ref, from_ref, incref, decref)
from pypy.module.cpyext.test.test_api import BaseApiTest, raises_w
from pypy.module.cpyext.test.test_cpyext import AppTestCpythonExtensionBase
from rpython.rtyper.lltypesystem import rffi, lltype
from rpython.rlib.debug import FatalError
from pypy.module.cpyext.state import State
from pypy.module.cpyext.tupleobject import (
PyTupleObject, PyTuple_Check, PyTuple_SetItem, PyTuple_Size)
class TestTupleObject(BaseApiTest):
def test_tupleobject_base(self, space):
assert not PyTuple_Check(space, space.w_None)
with raises_w(space, SystemError):
n = make_ref(space, space.w_None)
incref(space, n)
PyTuple_SetItem(space, n, 0, n)
atuple = space.newtuple([space.wrap(0), space.wrap(1),
space.wrap('yay')])
assert PyTuple_Size(space, atuple) == 3
with raises_w(space, SystemError):
PyTuple_Size(space, space.newlist([]))
def test_tuple_realize_refuses_nulls(self, space, api):
state = space.fromcache(State)
py_tuple = state.ccall("PyTuple_New", 1)
py.test.raises(FatalError, from_ref, space, py_tuple)
decref(space, py_tuple)
def test_tuple_resize(self, space, api):
w_42 = space.wrap(42)
w_43 = space.wrap(43)
w_44 = space.wrap(44)
ar = lltype.malloc(PyObjectP.TO, 1, flavor='raw')
state = space.fromcache(State)
py_tuple = state.ccall("PyTuple_New", 3)
# inside py_tuple is an array of "PyObject *" items which each hold
# a reference
rffi.cast(PyTupleObject, py_tuple).c_ob_item[0] = make_ref(space, w_42)
rffi.cast(PyTupleObject, py_tuple).c_ob_item[1] = make_ref(space, w_43)
ar[0] = py_tuple
api._PyTuple_Resize(ar, 2)
w_tuple = from_ref(space, ar[0])
assert space.int_w(space.len(w_tuple)) == 2
assert space.int_w(space.getitem(w_tuple, space.wrap(0))) == 42
assert space.int_w(space.getitem(w_tuple, space.wrap(1))) == 43
decref(space, ar[0])
py_tuple = state.ccall("PyTuple_New", 3)
rffi.cast(PyTupleObject, py_tuple).c_ob_item[0] = make_ref(space, w_42)
rffi.cast(PyTupleObject, py_tuple).c_ob_item[1] = make_ref(space, w_43)
rffi.cast(PyTupleObject, py_tuple).c_ob_item[2] = make_ref(space, w_44)
ar[0] = py_tuple
api._PyTuple_Resize(ar, 10)
assert api.PyTuple_Size(ar[0]) == 10
for i in range(3, 10):
rffi.cast(PyTupleObject, ar[0]).c_ob_item[i] = make_ref(
space, space.wrap(42 + i))
w_tuple = from_ref(space, ar[0])
assert space.int_w(space.len(w_tuple)) == 10
for i in range(10):
assert space.int_w(space.getitem(w_tuple, space.wrap(i))) == 42 + i
decref(space, ar[0])
py_tuple = state.ccall("PyTuple_New", 1)
ar[0] = py_tuple
api._PyTuple_Resize(ar, 1)
assert api.PyTuple_Size(ar[0]) == 1
decref(space, ar[0])
py_tuple = state.ccall("PyTuple_New", 1)
ar[0] = py_tuple
api._PyTuple_Resize(ar, 5)
assert api.PyTuple_Size(ar[0]) == 5
decref(space, ar[0])
lltype.free(ar, flavor='raw')
def test_setitem(self, space, api):
state = space.fromcache(State)
py_tuple = state.ccall("PyTuple_New", 2)
api.PyTuple_SetItem(py_tuple, 0, make_ref(space, space.wrap(42)))
api.PyTuple_SetItem(py_tuple, 1, make_ref(space, space.wrap(43)))
w_tuple = from_ref(space, py_tuple)
assert space.eq_w(w_tuple, space.newtuple([space.wrap(42),
space.wrap(43)]))
decref(space, py_tuple)
def test_getslice(self, space, api):
w_tuple = space.newtuple([space.wrap(i) for i in range(10)])
w_slice = api.PyTuple_GetSlice(w_tuple, 3, -3)
assert space.eq_w(w_slice,
space.newtuple([space.wrap(i) for i in range(3, 7)]))
class AppTestTuple(AppTestCpythonExtensionBase):
def test_refcounts(self):
module = self.import_extension('foo', [
("run", "METH_NOARGS",
"""
PyObject *item = PyTuple_New(0);
PyObject *t = PyTuple_New(1);
#ifdef PYPY_VERSION
// PyPy starts even empty tuples with a refcount of 1.
const int initial_item_refcount = 1;
#else
// CPython can cache ().
const int initial_item_refcount = item->ob_refcnt;
#endif // PYPY_VERSION
if (t->ob_refcnt != 1 || item->ob_refcnt != initial_item_refcount) {
PyErr_SetString(PyExc_SystemError, "bad initial refcnt");
return NULL;
}
PyTuple_SetItem(t, 0, item);
if (t->ob_refcnt != 1) {
PyErr_SetString(PyExc_SystemError, "SetItem: t refcnt != 1");
return NULL;
}
if (item->ob_refcnt != initial_item_refcount) {
PyErr_SetString(PyExc_SystemError, "GetItem: item refcnt != initial_item_refcount");
return NULL;
}
if (PyTuple_GetItem(t, 0) != item ||
PyTuple_GetItem(t, 0) != item) {
PyErr_SetString(PyExc_SystemError, "GetItem: bogus item");
return NULL;
}
if (t->ob_refcnt != 1) {
PyErr_SetString(PyExc_SystemError, "GetItem: t refcnt != 1");
return NULL;
}
if (item->ob_refcnt != initial_item_refcount) {
PyErr_SetString(PyExc_SystemError, "GetItem: item refcnt != initial_item_refcount");
return NULL;
}
return t;
"""),
])
x = module.run()
assert x == ((),)
def test_refcounts_more(self):
module = self.import_extension('foo', [
("run", "METH_NOARGS",
"""
long prev;
PyObject *t = PyTuple_New(1);
prev = Py_True->ob_refcnt;
Py_INCREF(Py_True);
PyTuple_SetItem(t, 0, Py_True);
if (Py_True->ob_refcnt != prev + 1) {
PyErr_SetString(PyExc_SystemError,
"SetItem: Py_True refcnt != prev + 1");
return NULL;
}
Py_DECREF(t);
if (Py_True->ob_refcnt != prev) {
PyErr_SetString(PyExc_SystemError,
"after: Py_True refcnt != prev");
return NULL;
}
Py_INCREF(Py_None);
return Py_None;
"""),
])
module.run()
def test_tuple_subclass(self):
module = self.import_module(name='foo')
a = module.TupleLike(range(100, 400, 100))
assert module.is_TupleLike(a) == 1
assert isinstance(a, tuple)
assert issubclass(type(a), tuple)
assert list(a) == list(range(100, 400, 100))
assert list(a) == list(range(100, 400, 100))
assert list(a) == list(range(100, 400, 100))
def test_setitem(self):
module = self.import_extension('foo', [
("set_after_use", "METH_O",
"""
PyObject *t2, *tuple = PyTuple_New(1);
PyObject * one = PyLong_FromLong(1);
int res;
Py_INCREF(one);
res = PyTuple_SetItem(tuple, 0, one);
if (res != 0)
{
Py_DECREF(one);
Py_DECREF(tuple);
return NULL;
}
Py_INCREF(args);
res = PyTuple_SetItem(tuple, 0, args);
if (res != 0)
{
Py_DECREF(tuple);
return NULL;
}
/* Do something that uses the tuple, but does not incref */
t2 = PyTuple_GetSlice(tuple, 0, 1);
Py_DECREF(t2);
res = PyTuple_SetItem(tuple, 0, one);
if (res != 0)
{
Py_DECREF(tuple);
return NULL;
}
Py_DECREF(tuple);
Py_INCREF(Py_None);
return Py_None;
"""),
])
import sys
s = 'abc'
if '__pypy__' in sys.builtin_module_names:
raises(SystemError, module.set_after_use, s)
else:
module.set_after_use(s)
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