def annotationoftype(t, bookkeeper=False):
from pypy.rpython import extregistry
"""The most precise SomeValue instance that contains all
objects of type t."""
assert isinstance(t, (type, types.ClassType))
if t is bool:
return SomeBool()
elif t is int:
return SomeInteger()
elif t is float:
return SomeFloat()
elif issubclass(t, str): # py.lib uses annotated str subclasses
return SomeString()
elif t is unicode:
return SomeUnicodeString()
elif t is list:
return SomeList(MOST_GENERAL_LISTDEF)
elif t is dict:
return SomeDict(MOST_GENERAL_DICTDEF)
# can't do tuple
elif t is types.NoneType:
return s_None
elif bookkeeper and extregistry.is_registered_type(t, bookkeeper.policy):
entry = extregistry.lookup_type(t, bookkeeper.policy)
return entry.compute_annotation_bk(bookkeeper)
elif bookkeeper and t.__module__ != '__builtin__' and t not in bookkeeper.pbctypes:
classdef = bookkeeper.getuniqueclassdef(t)
return SomeInstance(classdef)
else:
o = SomeObject()
if t != object:
o.knowntype = t
return o
def _compute_annotation(t, bookkeeper=None):
from pypy.rpython.lltypesystem import lltype
from pypy.rpython import extregistry
if isinstance(t, SomeObject):
return t
elif isinstance(t, lltype.LowLevelType):
return lltype_to_annotation(t)
elif isinstance(t, list):
assert len(t) == 1, "We do not support type joining in list"
listdef = ListDef(bookkeeper,
annotation(t[0]),
mutated=True,
resized=True)
return SomeList(listdef)
elif isinstance(t, tuple):
return SomeTuple(tuple([annotation(i) for i in t]))
elif isinstance(t, dict):
assert len(t) == 1, "We do not support type joining in dict"
result = SomeDict(
DictDef(bookkeeper, annotation(t.keys()[0]),
annotation(t.values()[0])))
return result
elif type(t) is types.NoneType:
return s_None
elif extregistry.is_registered(t):
entry = extregistry.lookup(t)
entry.bookkeeper = bookkeeper
return entry.compute_result_annotation()
else:
return annotationoftype(t, bookkeeper)
def robjmodel_r_dict(s_eqfn, s_hashfn, s_force_non_null=None):
if s_force_non_null is None:
force_non_null = False
else:
assert s_force_non_null.is_constant()
force_non_null = s_force_non_null.const
dictdef = getbookkeeper().getdictdef(is_r_dict=True,
force_non_null=force_non_null)
dictdef.dictkey.update_rdict_annotations(s_eqfn, s_hashfn)
return SomeDict(dictdef)
def immutablevalue(self, x, need_const=True):
"""The most precise SomeValue instance that contains the
immutable value x."""
# convert unbound methods to the underlying function
if hasattr(x, 'im_self') and x.im_self is None:
x = x.im_func
assert not hasattr(x, 'im_self')
if x is sys: # special case constant sys to someobject
return SomeObject()
tp = type(x)
if issubclass(tp, Symbolic): # symbolic constants support
result = x.annotation()
result.const_box = Constant(x)
return result
if tp is bool:
result = SomeBool()
elif tp is int:
result = SomeInteger(nonneg=x >= 0)
elif tp is long:
if -sys.maxint - 1 <= x <= sys.maxint:
x = int(x)
result = SomeInteger(nonneg=x >= 0)
else:
raise Exception("seeing a prebuilt long (value %s)" % hex(x))
elif issubclass(tp, str): # py.lib uses annotated str subclasses
if len(x) == 1:
result = SomeChar()
else:
result = SomeString()
elif tp is unicode:
if len(x) == 1:
result = SomeUnicodeCodePoint()
else:
result = SomeUnicodeString()
elif tp is tuple:
result = SomeTuple(
items=[self.immutablevalue(e, need_const) for e in x])
elif tp is float:
result = SomeFloat()
elif tp is list:
if need_const:
key = Constant(x)
try:
return self.immutable_cache[key]
except KeyError:
result = SomeList(ListDef(self, s_ImpossibleValue))
self.immutable_cache[key] = result
for e in x:
result.listdef.generalize(self.immutablevalue(e))
result.const_box = key
return result
else:
listdef = ListDef(self, s_ImpossibleValue)
for e in x:
listdef.generalize(self.immutablevalue(e, False))
result = SomeList(listdef)
elif tp is dict or tp is r_dict:
if need_const:
key = Constant(x)
try:
return self.immutable_cache[key]
except KeyError:
result = SomeDict(
DictDef(self,
s_ImpossibleValue,
s_ImpossibleValue,
is_r_dict=tp is r_dict))
self.immutable_cache[key] = result
if tp is r_dict:
s_eqfn = self.immutablevalue(x.key_eq)
s_hashfn = self.immutablevalue(x.key_hash)
result.dictdef.dictkey.update_rdict_annotations(
s_eqfn, s_hashfn)
seen_elements = 0
while seen_elements != len(x):
items = x.items()
for ek, ev in items:
result.dictdef.generalize_key(
self.immutablevalue(ek))
result.dictdef.generalize_value(
self.immutablevalue(ev))
result.dictdef.seen_prebuilt_key(ek)
seen_elements = len(items)
# if the dictionary grew during the iteration,
# start over again
result.const_box = key
return result
else:
dictdef = DictDef(self,
s_ImpossibleValue,
s_ImpossibleValue,
is_r_dict=tp is r_dict)
if tp is r_dict:
s_eqfn = self.immutablevalue(x.key_eq)
s_hashfn = self.immutablevalue(x.key_hash)
dictdef.dictkey.update_rdict_annotations(s_eqfn, s_hashfn)
for ek, ev in x.iteritems():
dictdef.generalize_key(self.immutablevalue(ek, False))
dictdef.generalize_value(self.immutablevalue(ev, False))
dictdef.seen_prebuilt_key(ek)
result = SomeDict(dictdef)
elif tp is weakref.ReferenceType:
x1 = x()
if x1 is None:
result = SomeWeakRef(None) # dead weakref
else:
s1 = self.immutablevalue(x1)
assert isinstance(s1, SomeInstance)
result = SomeWeakRef(s1.classdef)
elif ishashable(x) and x in BUILTIN_ANALYZERS:
_module = getattr(x, "__module__", "unknown")
result = SomeBuiltin(BUILTIN_ANALYZERS[x],
methodname="%s.%s" % (_module, x.__name__))
elif extregistry.is_registered(x, self.policy):
entry = extregistry.lookup(x, self.policy)
result = entry.compute_annotation_bk(self)
elif isinstance(x, lltype._ptr):
result = SomePtr(lltype.typeOf(x))
elif isinstance(x, llmemory.fakeaddress):
result = SomeAddress()
elif isinstance(x, ootype._static_meth):
result = SomeOOStaticMeth(ootype.typeOf(x))
elif isinstance(x, ootype._class):
result = SomeOOClass(x._INSTANCE) # NB. can be None
elif isinstance(x, ootype.instance_impl): # XXX
result = SomeOOInstance(ootype.typeOf(x))
elif isinstance(x, (ootype._record, ootype._string)):
result = SomeOOInstance(ootype.typeOf(x))
elif isinstance(x, (ootype._object)):
result = SomeOOObject()
elif callable(x):
if hasattr(x, 'im_self') and hasattr(x, 'im_func'):
# on top of PyPy, for cases like 'l.append' where 'l' is a
# global constant list, the find_method() returns non-None
s_self = self.immutablevalue(x.im_self, need_const)
result = s_self.find_method(x.im_func.__name__)
elif hasattr(x, '__self__') and x.__self__ is not None:
# for cases like 'l.append' where 'l' is a global constant list
s_self = self.immutablevalue(x.__self__, need_const)
result = s_self.find_method(x.__name__)
if result is None:
result = SomeObject()
else:
result = None
if result is None:
if (self.annotator.policy.allow_someobjects
and getattr(x, '__module__', None) == '__builtin__'
# XXX note that the print support functions are __builtin__
and tp not in (types.FunctionType, types.MethodType)):
result = SomeObject()
result.knowntype = tp # at least for types this needs to be correct
else:
result = SomePBC([self.getdesc(x)])
elif hasattr(x, '_freeze_') and x._freeze_():
# user-defined classes can define a method _freeze_(), which
# is called when a prebuilt instance is found. If the method
# returns True, the instance is considered immutable and becomes
# a SomePBC(). Otherwise it's just SomeInstance().
result = SomePBC([self.getdesc(x)])
elif hasattr(x, '__class__') \
and x.__class__.__module__ != '__builtin__':
self.see_mutable(x)
result = SomeInstance(self.getuniqueclassdef(x.__class__))
elif x is None:
return s_None
else:
result = SomeObject()
if need_const:
result.const = x
return result
def newdict(self):
"""Make a so-far empty SomeDict associated with the current
position."""
return SomeDict(self.getdictdef())
def method_copy(dct):
return SomeDict(dct.dictdef)
def robjmodel_r_dict(s_eqfn, s_hashfn):
dictdef = getbookkeeper().getdictdef(is_r_dict=True)
dictdef.dictkey.update_rdict_annotations(s_eqfn, s_hashfn)
return SomeDict(dictdef)
def union((dic1, dic2)):
return SomeDict(dic1.dictdef.union(dic2.dictdef))