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__doc__ = u"""
>>> index_object(100, 100) # doctest: +ELLIPSIS
Traceback (most recent call last):
...
TypeError: 'int' object ...
"""
cdef Py_ssize_t maxsize
import sys
if sys.version_info < (2,5):
__doc__ = __doc__.replace(u"'int' object ...", u'unsubscriptable object')
maxsize = min(sys.maxint, 2**31-1)
else:
maxsize = getattr(sys, 'maxsize', getattr(sys, 'maxint', None))
py_maxsize = maxsize
import cython
def index_tuple(tuple t, int i):
"""
(minor PyPy error formatting bug here, hence ELLIPSIS)
>>> index_tuple((1,1,2,3,5), 0)
1
>>> index_tuple((1,1,2,3,5), 3)
3
>>> index_tuple((1,1,2,3,5), -1)
5
>>> index_tuple((1,1,2,3,5), 100) # doctest: +ELLIPSIS
Traceback (most recent call last):
IndexError: ... index out of range
>>> index_tuple((1,1,2,3,5), -7) # doctest: +ELLIPSIS
Traceback (most recent call last):
IndexError: ... index out of range
>>> index_tuple(None, 0)
Traceback (most recent call last):
TypeError: 'NoneType' object is not subscriptable
"""
return t[i]
def index_list(list L, int i):
"""
>>> index_list([2,3,5,7,11,13,17,19], 0)
2
>>> index_list([2,3,5,7,11,13,17,19], 5)
13
>>> index_list([2,3,5,7,11,13,17,19], -1)
19
>>> index_list([2,3,5,7,11,13,17,19], 100) # doctest: +ELLIPSIS
Traceback (most recent call last):
IndexError: ... index out of range
>>> index_list([2,3,5,7,11,13,17,19], -10) # doctest: +ELLIPSIS
Traceback (most recent call last):
IndexError: ... index out of range
>>> index_list(None, 0)
Traceback (most recent call last):
TypeError: 'NoneType' object is not subscriptable
"""
return L[i]
def index_object(object o, int i):
"""
(minor PyPy error formatting bug here, hence ELLIPSIS)
>>> index_object([2,3,5,7,11,13,17,19], 1)
3
>>> index_object([2,3,5,7,11,13,17,19], -1)
19
>>> index_object((1,1,2,3,5), 2)
2
>>> index_object((1,1,2,3,5), -2)
3
>>> index_object("abcdef...z", 0)
'a'
>>> index_object("abcdef...z", -1)
'z'
>>> index_object("abcdef...z", 100)
Traceback (most recent call last):
IndexError: string index out of range
>>> try: index_object(None, 0)
... except TypeError: pass
"""
return o[i]
def del_index_list(list L, Py_ssize_t index):
"""
>>> del_index_list(list(range(4)), 0)
[1, 2, 3]
>>> del_index_list(list(range(4)), 1)
[0, 2, 3]
>>> del_index_list(list(range(4)), -1)
[0, 1, 2]
>>> del_index_list(list(range(4)), py_maxsize) # doctest: +ELLIPSIS
Traceback (most recent call last):
IndexError: list... index out of range
>>> del_index_list(list(range(4)), -py_maxsize) # doctest: +ELLIPSIS
Traceback (most recent call last):
IndexError: list... index out of range
"""
del L[index]
return L
def set_index_list(list L, Py_ssize_t index):
"""
>>> set_index_list(list(range(4)), 0)
[5, 1, 2, 3]
>>> set_index_list(list(range(4)), 1)
[0, 5, 2, 3]
>>> set_index_list(list(range(4)), -1)
[0, 1, 2, 5]
>>> set_index_list(list(range(4)), py_maxsize) # doctest: +ELLIPSIS
Traceback (most recent call last):
IndexError: list... index out of range
>>> set_index_list(list(range(4)), -py_maxsize) # doctest: +ELLIPSIS
Traceback (most recent call last):
IndexError: list... index out of range
"""
L[index] = 5
return L
# These make sure that our fast indexing works with large and unsigned types.
def test_unsigned_long():
"""
>>> test_unsigned_long()
"""
cdef int i
cdef unsigned long ix
cdef D = {}
for i from 0 <= i < <int>sizeof(unsigned long) * 8:
ix = (<unsigned long>1) << i
D[ix] = True
for i from 0 <= i < <int>sizeof(unsigned long) * 8:
ix = (<unsigned long>1) << i
assert D[ix] is True
del D[ix]
assert len(D) == 0
def test_unsigned_short():
"""
>>> test_unsigned_short()
"""
cdef int i
cdef unsigned short ix
cdef D = {}
for i from 0 <= i < <int>sizeof(unsigned short) * 8:
ix = (<unsigned short>1) << i
D[ix] = True
for i from 0 <= i < <int>sizeof(unsigned short) * 8:
ix = (<unsigned short>1) << i
assert D[ix] is True
del D[ix]
assert len(D) == 0
def test_long_long():
"""
>>> test_long_long()
"""
cdef int i
cdef long long ix
cdef D = {}
for i from 0 <= i < <int>sizeof(long long) * 8:
ix = (<long long>1) << i
D[ix] = True
for i from 0 <= i < <int>sizeof(long long) * 8:
ix = (<long long>1) << i
assert D[ix] is True
del D[ix]
L = [1, 2, 3]
try:
ix = py_maxsize + 1
except OverflowError:
pass # can't test this here
else:
try: L[ix] = 5
except IndexError: pass
else: assert False, "setting large index failed to raise IndexError"
try: del L[ix]
except IndexError: pass
else: assert False, "deleting large index failed to raise IndexError"
try:
ix = -py_maxsize - 2
except OverflowError:
pass # can't test this here
else:
try: L[ix] = 5
except IndexError: pass
else: assert False, "setting large index failed to raise IndexError"
try: del L[ix]
except IndexError: pass
else: assert False, "deleting large index failed to raise IndexError"
assert len(D) == 0
def test_ulong_long():
"""
>>> test_ulong_long()
"""
cdef unsigned long long ix
L = [1, 2, 3]
try:
ix = py_maxsize + 1
except OverflowError:
pass # can't test this here
else:
try: L[ix] = 5
except IndexError: pass
else: assert False, "setting large index failed to raise IndexError"
try: del L[ix]
except IndexError: pass
else: assert False, "deleting large index failed to raise IndexError"
@cython.boundscheck(False)
def test_boundscheck_unsigned(list L, tuple t, object o, unsigned long ix):
"""
>>> test_boundscheck_unsigned([1, 2, 4], (1, 2, 4), [1, 2, 4], 2)
(4, 4, 4)
>>> test_boundscheck_unsigned([1, 2, 4], (1, 2, 4), "", 2)
Traceback (most recent call last):
...
IndexError: string index out of range
"""
return L[ix], t[ix], o[ix]
@cython.boundscheck(False)
def test_boundscheck_signed(list L, tuple t, object o, long ix):
"""
>>> test_boundscheck_signed([1, 2, 4], (1, 2, 4), [1, 2, 4], 2)
(4, 4, 4)
>>> test_boundscheck_signed([1, 2, 4], (1, 2, 4), "", 2)
Traceback (most recent call last):
...
IndexError: string index out of range
"""
return L[ix], t[ix], o[ix]
@cython.wraparound(False)
def test_wraparound_signed(list L, tuple t, object o, long ix):
"""
>>> test_wraparound_signed([1, 2, 4], (1, 2, 4), [1, 2, 4], 2)
(4, 4, 4)
>>> test_wraparound_signed([1, 2, 4], (1, 2, 4), "", 2)
Traceback (most recent call last):
...
IndexError: string index out of range
"""
return L[ix], t[ix], o[ix]
def large_literal_index(object o):
"""
>>> large_literal_index({1000000000000000000000000000000: True})
True
"""
return o[1000000000000000000000000000000]
class LargeIndexable(object):
expected = None
def __len__(self):
raise OverflowError
def __getitem__(self, index):
return index
def __setitem__(self, index, value):
assert index == value == self.expected
self.expected = None
def __delitem__(self, index):
assert self.expected == index
self.expected = None
def test_large_indexing(obj):
"""
>>> obj = LargeIndexable()
>>> zero, pone, none, pmaxsize, nmaxsize = test_large_indexing(obj)
>>> # , p2maxsize, n2maxsize
>>> zero
0
>>> pone
1
>>> none
-1
>>> pmaxsize == py_maxsize
True
>>> nmaxsize == -py_maxsize
True
#>>> p2maxsize == py_maxsize*2
#True
#>>> n2maxsize == -py_maxsize*2
#True
"""
return (
obj[0], obj[1], obj[-1],
obj[maxsize], obj[-maxsize],
#obj[maxsize*2], obj[-maxsize*2] # FIXME!
)
def del_large_index(obj, Py_ssize_t index):
"""
>>> obj = LargeIndexable()
>>> del_large_index(obj, 0)
>>> del_large_index(obj, 1)
>>> del_large_index(obj, -1)
>>> del_large_index(obj, py_maxsize)
>>> del_large_index(obj, -py_maxsize)
"""
obj.expected = index
del obj[index]
assert obj.expected is None
def set_large_index(obj, Py_ssize_t index):
"""
>>> obj = LargeIndexable()
>>> set_large_index(obj, 0)
>>> set_large_index(obj, 1)
>>> set_large_index(obj, -1)
>>> set_large_index(obj, py_maxsize)
>>> set_large_index(obj, -py_maxsize)
"""
obj.expected = index
obj[index] = index
assert obj.expected is None
class DoesntLikePositiveIndices(object):
def __getitem__(self, idx):
if idx >= 0:
raise RuntimeError("Positive index")
return "Good"
def __setitem__(self, idx, value):
if idx >= 0:
raise RuntimeError("Positive index")
def __delitem__(self, idx):
if idx >= 0:
raise RuntimeError("Positive index")
def __len__(self):
return 500
def test_call_with_negative_numbers():
"""
The key point is that Cython shouldn't default to PySequence_*Item
since that invisibly adjusts negative numbers to be len(o)-idx.
>>> test_call_with_negative_numbers()
'Good'
"""
cdef int idx = -5
indexme = DoesntLikePositiveIndices()
del indexme[idx]
indexme[idx] = "something"
return indexme[idx]
|
