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import py
from rpython.annotator.model import UnionError
from rpython.rlib import rgc
from rpython.rlib.rweakref import RWeakKeyDictionary
from rpython.rtyper.test.test_llinterp import interpret
class KX(object):
pass
class KY(KX):
pass
class VX(object):
pass
class VY(VX):
pass
def make_test(loop=100, prebuilt=None):
def g(d):
assert d.get(KX()) is None
assert d.get(KY()) is None
k1 = KX(); k2 = KX(); k3 = KX()
v1 = VX(); v2 = VX(); v3 = VX()
d.set(k1, v1)
d.set(k2, v2)
d.set(k3, v3)
assert d.get(k1) is v1
assert d.get(k2) is v2
assert d.get(k3) is v3
assert d.get(KX()) is None
assert d.length() == 3
return k1, k3, v1, v2, v3 # k2 dies
def f():
d = prebuilt
if d is None:
d = RWeakKeyDictionary(KX, VX)
k1, k3, v1, v2, v3 = g(d)
rgc.collect(); rgc.collect()
assert d.get(k1) is v1
assert d.get(k3) is v3
assert d.get(k1) is not v2
assert d.get(k3) is not v2
assert d.length() == 2
d.set(k1, None)
assert d.get(k1) is None
assert d.get(k3) is v3
assert d.length() == 1
# resizing should also work
lots_of_keys = [KX() for i in range(loop)]
for k in lots_of_keys:
d.set(k, v1)
for k in lots_of_keys:
assert d.get(k) is v1
assert d.get(k1) is None
assert d.get(k3) is v3
assert d.length() == loop + 1
# a subclass
ky = KY()
vy = VY()
d.set(ky, vy)
assert d.get(ky) is vy
assert d.length() == loop + 2
# deleting by storing Nones
for k in lots_of_keys:
d.set(k, None)
for k in lots_of_keys:
assert d.get(k) is None
assert d.get(k1) is None
assert d.get(k3) is v3
assert d.get(ky) is vy
assert d.length() == 2
return f
def test_RWeakKeyDictionary():
make_test()()
def test_rpython_RWeakKeyDictionary():
interpret(make_test(loop=12), [])
def test_rpython_prebuilt():
f = make_test(loop=12, prebuilt=RWeakKeyDictionary(KX, VX))
interpret(f, [])
def test_rpython_merge_RWeakKeyDictionary():
empty = RWeakKeyDictionary(KX, VX)
def f(n):
k = KX()
v = VX()
if n:
d = empty
else:
d = RWeakKeyDictionary(KX, VX)
d.set(k, v)
return d.get(k) is v
assert f(0)
assert interpret(f, [0])
assert not f(1)
assert not interpret(f, [1])
def test_rpython_merge_RWeakKeyDictionary2():
class A(object):
def __init__(self):
self.d = RWeakKeyDictionary(KX, A)
def f(self, key):
a = A()
self.d.set(key, a)
return a
empty = A()
def f(x):
a = A()
if x:
a = empty
k = KX()
a2 = a.f(k)
assert a.d.get(k) is a2
f(0)
interpret(f, [0])
f(1)
interpret(f, [1])
@py.test.mark.xfail(
reason="may fail with AssertionError, depending on annotation order")
def test_rpython_merge_RWeakKeyDictionary3():
def g(x):
if x:
d = RWeakKeyDictionary(KX, VX)
else:
d = RWeakKeyDictionary(KY, VX)
d.set(KX(), VX())
with py.test.raises(UnionError):
interpret(g, [1])
@py.test.mark.xfail(
reason="may fail with AssertionError, depending on annotation order")
def test_rpython_merge_RWeakKeyDictionary4():
def g(x):
if x:
d = RWeakKeyDictionary(KX, VX)
else:
d = RWeakKeyDictionary(KX, VY)
d.set(KX(), VX())
with py.test.raises(UnionError):
interpret(g, [1])
@py.test.mark.xfail(reason="not implemented, messy")
def test_rpython_free_values():
class VXDel:
def __del__(self):
state.freed.append(1)
class State:
pass
state = State()
state.freed = []
#
def add_me():
k = KX()
v = VXDel()
d = RWeakKeyDictionary(KX, VXDel)
d.set(k, v)
return d
def f():
del state.freed[:]
d = add_me()
rgc.collect()
# we want the dictionary to be really empty here. It's hard to
# ensure in the current implementation after just one collect(),
# but at least two collects should be enough.
rgc.collect()
return len(state.freed)
assert f() == 1
assert interpret(f, []) == 1
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