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import py
from rpython.rlib import rgc
from rpython.rlib.rweakref import RWeakValueDictionary
from rpython.rtyper.test.test_llinterp import interpret
class X(object):
pass
class Y(X):
pass
def make_test(loop=100, keyclass=str):
if keyclass is str:
make_key = str
keys = ["abc", "def", "ghi", "hello"]
elif keyclass is int:
make_key = int
keys = [123, 456, 789, 1234]
def g(d):
assert d.get(keys[3]) is None
x1 = X(); x2 = X(); x3 = X()
d.set(keys[0], x1)
d.set(keys[1], x2)
d.set(keys[2], x3)
assert d.get(keys[0]) is x1
assert d.get(keys[1]) is x2
assert d.get(keys[2]) is x3
assert d.get(keys[3]) is None
return x1, x3 # x2 dies
def f():
d = RWeakValueDictionary(keyclass, X)
x1, x3 = g(d)
rgc.collect(); rgc.collect()
assert d.get(keys[0]) is x1
assert d.get(keys[1]) is None
assert d.get(keys[2]) is x3
assert d.get(keys[3]) is None
d.set(keys[0], None)
assert d.get(keys[0]) is None
assert d.get(keys[1]) is None
assert d.get(keys[2]) is x3
assert d.get(keys[3]) is None
# resizing should also work
for i in range(loop):
d.set(make_key(i), x1)
for i in range(loop):
assert d.get(make_key(i)) is x1
assert d.get(keys[0]) is None
assert d.get(keys[1]) is None
assert d.get(keys[2]) is x3
assert d.get(keys[3]) is None
# a subclass
y = Y()
d.set(keys[3], y)
assert d.get(keys[3]) is y
# storing a lot of Nones
for i in range(loop, loop*2-5):
d.set(make_key(1000 + i), x1)
for i in range(loop):
d.set(make_key(i), None)
for i in range(loop):
assert d.get(make_key(i)) is None
assert d.get(keys[0]) is None
assert d.get(keys[1]) is None
assert d.get(keys[2]) is x3
assert d.get(keys[3]) is y
for i in range(loop, loop*2-5):
assert d.get(make_key(1000 + i)) is x1
return f
def test_RWeakValueDictionary():
make_test()()
def test_RWeakValueDictionary_int():
make_test(keyclass=int)()
def test_rpython_RWeakValueDictionary():
interpret(make_test(loop=12), [])
def test_rpython_RWeakValueDictionary_int():
interpret(make_test(loop=12, keyclass=int), [])
def test_rpython_prebuilt():
d = RWeakValueDictionary(str, X)
living = [X() for i in range(8)]
for i in range(8):
d.set(str(i), living[i])
#
def f():
x = X()
for i in range(8, 13):
d.set(str(i), x)
for i in range(0, 8):
assert d.get(str(i)) is living[i]
for i in range(8, 13):
assert d.get(str(i)) is x
assert d.get("foobar") is None
#
f()
interpret(f, [])
def test_rpython_merge_RWeakValueDictionary():
empty = RWeakValueDictionary(str, X)
def f(n):
x = X()
if n:
d = empty
else:
d = RWeakValueDictionary(str, X)
d.set("a", x)
return d.get("a") is x
assert f(0)
assert interpret(f, [0])
assert not f(1)
assert not interpret(f, [1])
def test_rpython_merge_RWeakValueDictionary2():
class A(object):
def __init__(self):
self.d = RWeakValueDictionary(str, 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
a2 = a.f("a")
assert a.d.get("a") is a2
f(0)
interpret(f, [0])
f(1)
interpret(f, [1])
def g(x):
if x:
d = RWeakValueDictionary(str, X)
else:
d = RWeakValueDictionary(str, Y)
d.set("x", X())
py.test.raises(Exception, interpret, g, [1])
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