Author: Amaury Forgeot d'Arc <[email protected]>
Branch:
Changeset: r54617:866e71a3a373
Date: 2012-04-19 22:33 +0200
http://bitbucket.org/pypy/pypy/changeset/866e71a3a373/
Log: cpyext: implement PyList_GetSlice
diff --git a/pypy/module/cpyext/listobject.py b/pypy/module/cpyext/listobject.py
--- a/pypy/module/cpyext/listobject.py
+++ b/pypy/module/cpyext/listobject.py
@@ -110,6 +110,16 @@
space.call_method(w_list, "reverse")
return 0
+@cpython_api([PyObject, Py_ssize_t, Py_ssize_t], PyObject)
+def PyList_GetSlice(space, w_list, low, high):
+ """Return a list of the objects in list containing the objects between low
+ and high. Return NULL and set an exception if unsuccessful. Analogous
+ to list[low:high]. Negative indices, as when slicing from Python, are not
+ supported."""
+ w_start = space.wrap(low)
+ w_stop = space.wrap(high)
+ return space.getslice(w_list, w_start, w_stop)
+
@cpython_api([PyObject, Py_ssize_t, Py_ssize_t, PyObject], rffi.INT_real,
error=-1)
def PyList_SetSlice(space, w_list, low, high, w_sequence):
"""Set the slice of list between low and high to the contents of
diff --git a/pypy/module/cpyext/stubs.py b/pypy/module/cpyext/stubs.py
--- a/pypy/module/cpyext/stubs.py
+++ b/pypy/module/cpyext/stubs.py
@@ -1405,17 +1405,6 @@
"""
raise NotImplementedError
-@cpython_api([PyObject, Py_ssize_t, Py_ssize_t], PyObject)
-def PyList_GetSlice(space, list, low, high):
- """Return a list of the objects in list containing the objects between low
- and high. Return NULL and set an exception if unsuccessful. Analogous
- to list[low:high]. Negative indices, as when slicing from Python, are not
- supported.
-
- This function used an int for low and high. This might
- require changes in your code for properly supporting 64-bit systems."""
- raise NotImplementedError
-
@cpython_api([Py_ssize_t], PyObject)
def PyLong_FromSsize_t(space, v):
"""Return a new PyLongObject object from a C Py_ssize_t, or
diff --git a/pypy/module/cpyext/test/test_listobject.py
b/pypy/module/cpyext/test/test_listobject.py
--- a/pypy/module/cpyext/test/test_listobject.py
+++ b/pypy/module/cpyext/test/test_listobject.py
@@ -58,6 +58,11 @@
w_t = api.PyList_AsTuple(w_l)
assert space.unwrap(w_t) == (3, 2, 1)
+ def test_list_getslice(self, space, api):
+ w_l = space.newlist([space.wrap(3), space.wrap(2), space.wrap(1)])
+ w_s = api.PyList_GetSlice(w_l, 1, 5)
+ assert space.unwrap(w_s) == [2, 1]
+
class AppTestListObject(AppTestCpythonExtensionBase):
def test_listobject(self):
import sys
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