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import py
from rpython.rlib.jit import virtual_ref, virtual_ref_finish
from rpython.rlib.jit import vref_None, non_virtual_ref, InvalidVirtualRef
from rpython.rlib._jit_vref import SomeVRef
from rpython.annotator import model as annmodel
from rpython.annotator.annrpython import RPythonAnnotator
from rpython.rtyper.rclass import OBJECTPTR
from rpython.rtyper.lltypesystem import lltype
from rpython.rtyper.test.tool import BaseRtypingTest
class X(object):
pass
class Y(X):
pass
class Z(X):
pass
def test_direct_forced():
x1 = X()
vref = virtual_ref(x1)
assert vref._state == 'non-forced'
assert vref.virtual is True
assert vref() is x1
assert vref._state == 'forced'
assert vref.virtual is False
virtual_ref_finish(vref, x1)
assert vref._state == 'forced'
assert vref.virtual is False
assert vref() is x1
def test_direct_invalid():
x1 = X()
vref = virtual_ref(x1)
assert vref._state == 'non-forced'
virtual_ref_finish(vref, x1)
assert vref._state == 'invalid'
py.test.raises(InvalidVirtualRef, "vref()")
def test_annotate_1():
def f():
return virtual_ref(X())
a = RPythonAnnotator()
s = a.build_types(f, [])
assert isinstance(s, SomeVRef)
assert isinstance(s.s_instance, annmodel.SomeInstance)
assert s.s_instance.classdef == a.bookkeeper.getuniqueclassdef(X)
def test_annotate_2():
def f():
x1 = X()
vref = virtual_ref(x1)
x2 = vref()
virtual_ref_finish(vref, x1)
return x2
a = RPythonAnnotator()
s = a.build_types(f, [])
assert isinstance(s, annmodel.SomeInstance)
assert s.classdef == a.bookkeeper.getuniqueclassdef(X)
def test_annotate_3():
def f(n):
if n > 0:
return virtual_ref(Y())
else:
return non_virtual_ref(Z())
a = RPythonAnnotator()
s = a.build_types(f, [int])
assert isinstance(s, SomeVRef)
assert isinstance(s.s_instance, annmodel.SomeInstance)
assert not s.s_instance.can_be_None
assert s.s_instance.classdef == a.bookkeeper.getuniqueclassdef(X)
def test_annotate_4():
def f(n):
if n > 0:
return virtual_ref(X())
else:
return vref_None
a = RPythonAnnotator()
s = a.build_types(f, [int])
assert isinstance(s, SomeVRef)
assert isinstance(s.s_instance, annmodel.SomeInstance)
assert s.s_instance.can_be_None
assert s.s_instance.classdef == a.bookkeeper.getuniqueclassdef(X)
class TestVRef(BaseRtypingTest):
OBJECTTYPE = OBJECTPTR
def castable(self, TO, var):
return lltype.castable(TO, lltype.typeOf(var)) > 0
def test_rtype_1(self):
def f():
return virtual_ref(X())
x = self.interpret(f, [])
assert lltype.typeOf(x) == self.OBJECTTYPE
def test_rtype_2(self):
def f():
x1 = X()
vref = virtual_ref(x1)
x2 = vref()
virtual_ref_finish(vref, x2)
return x2
x = self.interpret(f, [])
assert self.castable(self.OBJECTTYPE, x)
def test_rtype_3(self):
def f(n):
if n > 0:
return virtual_ref(Y())
else:
return non_virtual_ref(Z())
x = self.interpret(f, [-5])
assert lltype.typeOf(x) == self.OBJECTTYPE
def test_rtype_4(self):
def f(n):
if n > 0:
return virtual_ref(X())
else:
return vref_None
x = self.interpret(f, [-5])
assert lltype.typeOf(x) == self.OBJECTTYPE
assert not x
def test_rtype_5(self):
def f():
vref = virtual_ref(X())
try:
vref()
return 42
except InvalidVirtualRef:
return -1
x = self.interpret(f, [])
assert x == 42
def test_rtype_virtualattr(self):
def f():
vref = virtual_ref(X())
return vref.virtual
x = self.interpret(f, [])
assert x is False
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