def __init__(self, rtyper, r_key):
self.rtyper = rtyper
self.r_key = r_key
fasthashfn = r_key.get_ll_fasthash_function()
self.ll_keyhash = r_key.get_ll_hash_function()
ll_keyeq = lltype.staticAdtMethod(r_key.get_ll_eq_function())
def ll_valid(entries, i):
value = entries[i].value
return bool(value) and bool(weakref_deref(rclass.OBJECTPTR, value))
def ll_everused(entries, i):
return bool(entries[i].value)
def ll_hash(entries, i):
return fasthashfn(entries[i].key)
entrymeths = {
'allocate': lltype.typeMethod(rdict._ll_malloc_entries),
'delete': rdict._ll_free_entries,
'valid': ll_valid,
'everused': ll_everused,
'hash': ll_hash,
}
WEAKDICTENTRY = lltype.Struct("weakdictentry",
("key", r_key.lowleveltype),
("value", llmemory.WeakRefPtr))
WEAKDICTENTRYARRAY = lltype.GcArray(WEAKDICTENTRY,
adtmeths=entrymeths,
hints={'weakarray': 'value'})
# NB. the 'hints' is not used so far ^^^
dictmeths = {
'll_get': self.ll_get,
'll_set': self.ll_set,
'keyeq': ll_keyeq,
'paranoia': False,
}
self.WEAKDICT = lltype.GcStruct(
"weakvaldict",
("num_items", lltype.Signed),
("resize_counter", lltype.Signed),
("entries", lltype.Ptr(WEAKDICTENTRYARRAY)),
adtmeths=dictmeths)
self.lowleveltype = lltype.Ptr(self.WEAKDICT)
self.dict_cache = {}
def _setup_repr(self):
if 'key_repr' not in self.__dict__:
key_repr = self._key_repr_computer()
self.external_key_repr, self.key_repr = self.pickkeyrepr(key_repr)
if 'value_repr' not in self.__dict__:
self.external_value_repr, self.value_repr = self.pickrepr(self._value_repr_computer())
if isinstance(self.DICT, lltype.GcForwardReference):
self.DICTKEY = self.key_repr.lowleveltype
self.DICTVALUE = self.value_repr.lowleveltype
# compute the shape of the DICTENTRY structure
entryfields = []
entrymeths = {
'allocate': lltype.typeMethod(_ll_malloc_entries),
'delete': _ll_free_entries,
'must_clear_key': (isinstance(self.DICTKEY, lltype.Ptr)
and self.DICTKEY._needsgc()),
'must_clear_value': (isinstance(self.DICTVALUE, lltype.Ptr)
and self.DICTVALUE._needsgc()),
}
# * the key
entryfields.append(("key", self.DICTKEY))
# * if NULL is not a valid ll value for the key or the value
# field of the entry, it can be used as a marker for
# never-used entries. Otherwise, we need an explicit flag.
s_key = self.dictkey.s_value
s_value = self.dictvalue.s_value
nullkeymarker = not self.key_repr.can_ll_be_null(s_key)
nullvaluemarker = not self.value_repr.can_ll_be_null(s_value)
if self.force_non_null:
if not nullkeymarker:
rmodel.warning("%s can be null, but forcing non-null in dict key" % s_key)
nullkeymarker = True
if not nullvaluemarker:
rmodel.warning("%s can be null, but forcing non-null in dict value" % s_value)
nullvaluemarker = True
dummykeyobj = self.key_repr.get_ll_dummyval_obj(self.rtyper,
s_key)
dummyvalueobj = self.value_repr.get_ll_dummyval_obj(self.rtyper,
s_value)
# * the state of the entry - trying to encode it as dummy objects
if nullkeymarker and dummykeyobj:
# all the state can be encoded in the key
entrymeths['everused'] = ll_everused_from_key
entrymeths['dummy_obj'] = dummykeyobj
entrymeths['valid'] = ll_valid_from_key
entrymeths['mark_deleted'] = ll_mark_deleted_in_key
# the key is overwritten by 'dummy' when the entry is deleted
entrymeths['must_clear_key'] = False
elif nullvaluemarker and dummyvalueobj:
# all the state can be encoded in the value
entrymeths['everused'] = ll_everused_from_value
entrymeths['dummy_obj'] = dummyvalueobj
entrymeths['valid'] = ll_valid_from_value
entrymeths['mark_deleted'] = ll_mark_deleted_in_value
# value is overwritten by 'dummy' when entry is deleted
entrymeths['must_clear_value'] = False
else:
# we need a flag to know if the entry was ever used
# (we cannot use a NULL as a marker for this, because
# the key and value will be reset to NULL to clear their
# reference)
entryfields.append(("f_everused", lltype.Bool))
entrymeths['everused'] = ll_everused_from_flag
# can we still rely on a dummy obj to mark deleted entries?
if dummykeyobj:
entrymeths['dummy_obj'] = dummykeyobj
entrymeths['valid'] = ll_valid_from_key
entrymeths['mark_deleted'] = ll_mark_deleted_in_key
# key is overwritten by 'dummy' when entry is deleted
entrymeths['must_clear_key'] = False
elif dummyvalueobj:
entrymeths['dummy_obj'] = dummyvalueobj
entrymeths['valid'] = ll_valid_from_value
entrymeths['mark_deleted'] = ll_mark_deleted_in_value
# value is overwritten by 'dummy' when entry is deleted
entrymeths['must_clear_value'] = False
else:
entryfields.append(("f_valid", lltype.Bool))
entrymeths['valid'] = ll_valid_from_flag
entrymeths['mark_deleted'] = ll_mark_deleted_in_flag
# * the value
entryfields.append(("value", self.DICTVALUE))
# * the hash, if needed
if self.custom_eq_hash:
fasthashfn = None
else:
fasthashfn = self.key_repr.get_ll_fasthash_function()
if getattr(self.key_repr.get_ll_eq_function(),
'no_direct_compare', False):
entrymeths['no_direct_compare'] = True
if fasthashfn is None:
entryfields.append(("f_hash", lltype.Signed))
entrymeths['hash'] = ll_hash_from_cache
else:
entrymeths['hash'] = ll_hash_recomputed
entrymeths['fasthashfn'] = fasthashfn
# Build the lltype data structures
self.DICTENTRY = lltype.Struct("dictentry", *entryfields)
self.DICTENTRYARRAY = lltype.GcArray(self.DICTENTRY,
adtmeths=entrymeths)
fields = [ ("num_items", lltype.Signed),
("resize_counter", lltype.Signed),
("entries", lltype.Ptr(self.DICTENTRYARRAY)) ]
if self.custom_eq_hash:
self.r_rdict_eqfn, self.r_rdict_hashfn = self._custom_eq_hash_repr()
fields.extend([ ("fnkeyeq", self.r_rdict_eqfn.lowleveltype),
("fnkeyhash", self.r_rdict_hashfn.lowleveltype) ])
adtmeths = {
'keyhash': ll_keyhash_custom,
'keyeq': ll_keyeq_custom,
'r_rdict_eqfn': self.r_rdict_eqfn,
'r_rdict_hashfn': self.r_rdict_hashfn,
'paranoia': True,
}
else:
# figure out which functions must be used to hash and compare
ll_keyhash = self.key_repr.get_ll_hash_function()
ll_keyeq = self.key_repr.get_ll_eq_function() # can be None
ll_keyhash = lltype.staticAdtMethod(ll_keyhash)
if ll_keyeq is not None:
ll_keyeq = lltype.staticAdtMethod(ll_keyeq)
adtmeths = {
'keyhash': ll_keyhash,
'keyeq': ll_keyeq,
'paranoia': False,
}
adtmeths['KEY'] = self.DICTKEY
adtmeths['VALUE'] = self.DICTVALUE
adtmeths['allocate'] = lltype.typeMethod(_ll_malloc_dict)
self.DICT.become(lltype.GcStruct("dicttable", adtmeths=adtmeths,
*fields))
def ll_both_none(lst1, lst2):
return not lst1 and not lst2
# ____________________________________________________________
#
# Accessor methods
def ll_newlist(LIST, length):
ll_assert(length >= 0, "negative list length")
l = malloc(LIST)
l.length = length
l.items = malloc(LIST.items.TO, length)
return l
ll_newlist = typeMethod(ll_newlist)
ll_newlist.oopspec = 'newlist(length)'
def ll_newlist_hint(LIST, lengthhint):
ll_assert(lengthhint >= 0, "negative list length")
l = malloc(LIST)
l.length = 0
l.items = malloc(LIST.items.TO, lengthhint)
return l
ll_newlist_hint = typeMethod(ll_newlist_hint)
ll_newlist_hint.oopspec = 'newlist_hint(lengthhint)'
# should empty lists start with no allocated memory, or with a preallocated
# minimal number of entries? XXX compare memory usage versus speed, and
# check how many always-empty lists there are in a typical pypy-c run...
INITIAL_EMPTY_LIST_ALLOCATION = 0
def _setup_repr(self):
if 'key_repr' not in self.__dict__:
key_repr = self._key_repr_computer()
self.external_key_repr, self.key_repr = self.pickkeyrepr(key_repr)
if 'value_repr' not in self.__dict__:
self.external_value_repr, self.value_repr = self.pickrepr(self._value_repr_computer())
if isinstance(self.DICT, lltype.GcForwardReference):
self.DICTKEY = self.key_repr.lowleveltype
self.DICTVALUE = self.value_repr.lowleveltype
# compute the shape of the DICTENTRY structure
entryfields = []
entrymeths = {
'allocate': lltype.typeMethod(_ll_malloc_entries),
'delete': _ll_free_entries,
'must_clear_key': (isinstance(self.DICTKEY, lltype.Ptr)
and self.DICTKEY._needsgc()),
'must_clear_value': (isinstance(self.DICTVALUE, lltype.Ptr)
and self.DICTVALUE._needsgc()),
}
# * the key
entryfields.append(("key", self.DICTKEY))
# * if NULL is not a valid ll value for the key or the value
# field of the entry, it can be used as a marker for
# never-used entries. Otherwise, we need an explicit flag.
s_key = self.dictkey.s_value
s_value = self.dictvalue.s_value
nullkeymarker = not self.key_repr.can_ll_be_null(s_key)
nullvaluemarker = not self.value_repr.can_ll_be_null(s_value)
if self.force_non_null:
if not nullkeymarker:
rmodel.warning("%s can be null, but forcing non-null in dict key" % s_key)
nullkeymarker = True
if not nullvaluemarker:
rmodel.warning("%s can be null, but forcing non-null in dict value" % s_value)
nullvaluemarker = True
dummykeyobj = self.key_repr.get_ll_dummyval_obj(self.rtyper,
s_key)
dummyvalueobj = self.value_repr.get_ll_dummyval_obj(self.rtyper,
s_value)
# * the state of the entry - trying to encode it as dummy objects
if nullkeymarker and dummykeyobj:
# all the state can be encoded in the key
entrymeths['everused'] = ll_everused_from_key
entrymeths['dummy_obj'] = dummykeyobj
entrymeths['valid'] = ll_valid_from_key
entrymeths['mark_deleted'] = ll_mark_deleted_in_key
# the key is overwritten by 'dummy' when the entry is deleted
entrymeths['must_clear_key'] = False
elif nullvaluemarker and dummyvalueobj:
# all the state can be encoded in the value
entrymeths['everused'] = ll_everused_from_value
entrymeths['dummy_obj'] = dummyvalueobj
entrymeths['valid'] = ll_valid_from_value
entrymeths['mark_deleted'] = ll_mark_deleted_in_value
# value is overwritten by 'dummy' when entry is deleted
entrymeths['must_clear_value'] = False
else:
# we need a flag to know if the entry was ever used
# (we cannot use a NULL as a marker for this, because
# the key and value will be reset to NULL to clear their
# reference)
entryfields.append(("f_everused", lltype.Bool))
entrymeths['everused'] = ll_everused_from_flag
# can we still rely on a dummy obj to mark deleted entries?
if dummykeyobj:
entrymeths['dummy_obj'] = dummykeyobj
entrymeths['valid'] = ll_valid_from_key
entrymeths['mark_deleted'] = ll_mark_deleted_in_key
# key is overwritten by 'dummy' when entry is deleted
entrymeths['must_clear_key'] = False
elif dummyvalueobj:
entrymeths['dummy_obj'] = dummyvalueobj
entrymeths['valid'] = ll_valid_from_value
entrymeths['mark_deleted'] = ll_mark_deleted_in_value
# value is overwritten by 'dummy' when entry is deleted
entrymeths['must_clear_value'] = False
else:
entryfields.append(("f_valid", lltype.Bool))
entrymeths['valid'] = ll_valid_from_flag
entrymeths['mark_deleted'] = ll_mark_deleted_in_flag
# * the value
entryfields.append(("value", self.DICTVALUE))
# * the hash, if needed
if self.custom_eq_hash:
fasthashfn = None
else:
fasthashfn = self.key_repr.get_ll_fasthash_function()
if fasthashfn is None:
entryfields.append(("f_hash", lltype.Signed))
entrymeths['hash'] = ll_hash_from_cache
else:
entrymeths['hash'] = ll_hash_recomputed
entrymeths['fasthashfn'] = fasthashfn
# Build the lltype data structures
self.DICTENTRY = lltype.Struct("dictentry", *entryfields)
self.DICTENTRYARRAY = lltype.GcArray(self.DICTENTRY,
adtmeths=entrymeths)
fields = [ ("num_items", lltype.Signed),
("resize_counter", lltype.Signed),
("entries", lltype.Ptr(self.DICTENTRYARRAY)) ]
if self.custom_eq_hash:
self.r_rdict_eqfn, self.r_rdict_hashfn = self._custom_eq_hash_repr()
fields.extend([ ("fnkeyeq", self.r_rdict_eqfn.lowleveltype),
("fnkeyhash", self.r_rdict_hashfn.lowleveltype) ])
adtmeths = {
'keyhash': ll_keyhash_custom,
'keyeq': ll_keyeq_custom,
'r_rdict_eqfn': self.r_rdict_eqfn,
'r_rdict_hashfn': self.r_rdict_hashfn,
'paranoia': True,
}
else:
# figure out which functions must be used to hash and compare
ll_keyhash = self.key_repr.get_ll_hash_function()
ll_keyeq = self.key_repr.get_ll_eq_function() # can be None
ll_keyhash = lltype.staticAdtMethod(ll_keyhash)
if ll_keyeq is not None:
ll_keyeq = lltype.staticAdtMethod(ll_keyeq)
adtmeths = {
'keyhash': ll_keyhash,
'keyeq': ll_keyeq,
'paranoia': False,
}
adtmeths['KEY'] = self.DICTKEY
adtmeths['VALUE'] = self.DICTVALUE
adtmeths['allocate'] = lltype.typeMethod(_ll_malloc_dict)
self.DICT.become(lltype.GcStruct("dicttable", adtmeths=adtmeths,
*fields))
def get_ll_dict(
DICTKEY,
DICTVALUE,
get_custom_eq_hash=None,
DICT=None,
ll_fasthash_function=None,
ll_hash_function=None,
ll_eq_function=None,
method_cache={},
dummykeyobj=None,
dummyvalueobj=None,
rtyper=None,
):
# get the actual DICT type. if DICT is None, it's created, otherwise
# forward reference is becoming DICT
if DICT is None:
DICT = lltype.GcForwardReference()
# compute the shape of the DICTENTRY structure
entryfields = []
entrymeths = {
"allocate": lltype.typeMethod(_ll_malloc_entries),
"delete": _ll_free_entries,
"must_clear_key": (isinstance(DICTKEY, lltype.Ptr) and DICTKEY._needsgc()),
"must_clear_value": (isinstance(DICTVALUE, lltype.Ptr) and DICTVALUE._needsgc()),
}
if getattr(ll_eq_function, "no_direct_compare", False):
entrymeths["no_direct_compare"] = True
# * the key
entryfields.append(("key", DICTKEY))
# * the state of the entry - trying to encode it as dummy objects
if dummykeyobj:
# all the state can be encoded in the key
entrymeths["dummy_obj"] = dummykeyobj
entrymeths["valid"] = ll_valid_from_key
entrymeths["mark_deleted"] = ll_mark_deleted_in_key
# the key is overwritten by 'dummy' when the entry is deleted
entrymeths["must_clear_key"] = False
elif dummyvalueobj:
# all the state can be encoded in the value
entrymeths["dummy_obj"] = dummyvalueobj
entrymeths["valid"] = ll_valid_from_value
entrymeths["mark_deleted"] = ll_mark_deleted_in_value
# value is overwritten by 'dummy' when entry is deleted
entrymeths["must_clear_value"] = False
else:
# we need a flag to know if the entry was ever used
entryfields.append(("f_valid", lltype.Bool))
entrymeths["valid"] = ll_valid_from_flag
entrymeths["mark_deleted"] = ll_mark_deleted_in_flag
# * the value
entryfields.append(("value", DICTVALUE))
if ll_fasthash_function is None:
entryfields.append(("f_hash", lltype.Signed))
entrymeths["hash"] = ll_hash_from_cache
else:
entrymeths["hash"] = ll_hash_recomputed
entrymeths["fasthashfn"] = ll_fasthash_function
# Build the lltype data structures
DICTENTRY = lltype.Struct("odictentry", *entryfields)
DICTENTRYARRAY = lltype.GcArray(DICTENTRY, adtmeths=entrymeths)
fields = [
("num_live_items", lltype.Signed),
("num_ever_used_items", lltype.Signed),
("resize_counter", lltype.Signed),
("indexes", llmemory.GCREF),
("lookup_function_no", lltype.Signed),
("entries", lltype.Ptr(DICTENTRYARRAY)),
]
if get_custom_eq_hash is not None:
r_rdict_eqfn, r_rdict_hashfn = get_custom_eq_hash()
fields.extend([("fnkeyeq", r_rdict_eqfn.lowleveltype), ("fnkeyhash", r_rdict_hashfn.lowleveltype)])
adtmeths = {
"keyhash": ll_keyhash_custom,
"keyeq": ll_keyeq_custom,
"r_rdict_eqfn": r_rdict_eqfn,
"r_rdict_hashfn": r_rdict_hashfn,
"paranoia": True,
}
else:
# figure out which functions must be used to hash and compare
ll_keyhash = ll_hash_function
ll_keyeq = ll_eq_function
ll_keyhash = lltype.staticAdtMethod(ll_keyhash)
if ll_keyeq is not None:
ll_keyeq = lltype.staticAdtMethod(ll_keyeq)
adtmeths = {"keyhash": ll_keyhash, "keyeq": ll_keyeq, "paranoia": False}
adtmeths["KEY"] = DICTKEY
adtmeths["VALUE"] = DICTVALUE
adtmeths["lookup_function"] = lltype.staticAdtMethod(ll_call_lookup_function)
adtmeths["allocate"] = lltype.typeMethod(_ll_malloc_dict)
DICT.become(lltype.GcStruct("dicttable", adtmeths=adtmeths, *fields))
return DICT
elif weakref_deref(rclass.OBJECTPTR, key):
return True
else:
# The entry might be a dead weakref still holding a strong
# reference to the value; for this case, we clear the old
# value from the entry, if any.
entries[i].value = NULLVALUE
return False
def ll_everused(entries, i):
return bool(entries[i].key)
entrymeths = {
'allocate': lltype.typeMethod(rdict._ll_malloc_entries),
'delete': rdict._ll_free_entries,
'valid': ll_valid,
'everused': ll_everused,
'hash': rdict.ll_hash_from_cache,
'no_direct_compare': True,
}
WEAKDICTENTRYARRAY = lltype.GcArray(WEAKDICTENTRY,
adtmeths=entrymeths,
hints={'weakarray': 'key'})
# NB. the 'hints' is not used so far ^^^
@jit.dont_look_inside
def ll_new_weakdict():
d = lltype.malloc(WEAKDICT)
elif weakref_deref(rclass.OBJECTPTR, key):
return True
else:
# The entry might be a dead weakref still holding a strong
# reference to the value; for this case, we clear the old
# value from the entry, if any.
entries[i].value = NULLVALUE
return False
def ll_everused(entries, i):
return bool(entries[i].key)
entrymeths = {
"allocate": lltype.typeMethod(rdict._ll_malloc_entries),
"delete": rdict._ll_free_entries,
"valid": ll_valid,
"everused": ll_everused,
"hash": rdict.ll_hash_from_cache,
"no_direct_compare": True,
}
WEAKDICTENTRYARRAY = lltype.GcArray(WEAKDICTENTRY, adtmeths=entrymeths, hints={"weakarray": "key"})
# NB. the 'hints' is not used so far ^^^
@jit.dont_look_inside
def ll_new_weakdict():
d = lltype.malloc(WEAKDICT)
d.entries = WEAKDICT.entries.TO.allocate(rdict.DICT_INITSIZE)
d.num_items = 0
def get_ll_dict(DICTKEY,
DICTVALUE,
get_custom_eq_hash=None,
DICT=None,
ll_fasthash_function=None,
ll_hash_function=None,
ll_eq_function=None,
method_cache={},
dummykeyobj=None,
dummyvalueobj=None,
rtyper=None):
# get the actual DICT type. if DICT is None, it's created, otherwise
# forward reference is becoming DICT
if DICT is None:
DICT = lltype.GcForwardReference()
# compute the shape of the DICTENTRY structure
entryfields = []
entrymeths = {
'allocate':
lltype.typeMethod(_ll_malloc_entries),
'delete':
_ll_free_entries,
'must_clear_key': (isinstance(DICTKEY, lltype.Ptr)
and DICTKEY._needsgc()),
'must_clear_value': (isinstance(DICTVALUE, lltype.Ptr)
and DICTVALUE._needsgc()),
}
if getattr(ll_eq_function, 'no_direct_compare', False):
entrymeths['no_direct_compare'] = True
# * the key
entryfields.append(("key", DICTKEY))
# * the state of the entry - trying to encode it as dummy objects
if dummykeyobj:
# all the state can be encoded in the key
entrymeths['dummy_obj'] = dummykeyobj
entrymeths['valid'] = ll_valid_from_key
entrymeths['mark_deleted'] = ll_mark_deleted_in_key
# the key is overwritten by 'dummy' when the entry is deleted
entrymeths['must_clear_key'] = False
elif dummyvalueobj:
# all the state can be encoded in the value
entrymeths['dummy_obj'] = dummyvalueobj
entrymeths['valid'] = ll_valid_from_value
entrymeths['mark_deleted'] = ll_mark_deleted_in_value
# value is overwritten by 'dummy' when entry is deleted
entrymeths['must_clear_value'] = False
else:
# we need a flag to know if the entry was ever used
entryfields.append(("f_valid", lltype.Bool))
entrymeths['valid'] = ll_valid_from_flag
entrymeths['mark_deleted'] = ll_mark_deleted_in_flag
# * the value
entryfields.append(("value", DICTVALUE))
if ll_fasthash_function is None:
entryfields.append(("f_hash", lltype.Signed))
entrymeths['hash'] = ll_hash_from_cache
else:
entrymeths['hash'] = ll_hash_recomputed
entrymeths['fasthashfn'] = ll_fasthash_function
# Build the lltype data structures
DICTENTRY = lltype.Struct("odictentry", *entryfields)
DICTENTRYARRAY = lltype.GcArray(DICTENTRY, adtmeths=entrymeths)
fields = [("num_live_items", lltype.Signed),
("num_ever_used_items", lltype.Signed),
("resize_counter", lltype.Signed), ("indexes", llmemory.GCREF),
("lookup_function_no", lltype.Signed),
("entries", lltype.Ptr(DICTENTRYARRAY))]
if get_custom_eq_hash is not None:
r_rdict_eqfn, r_rdict_hashfn = get_custom_eq_hash()
fields.extend([("fnkeyeq", r_rdict_eqfn.lowleveltype),
("fnkeyhash", r_rdict_hashfn.lowleveltype)])
adtmeths = {
'keyhash': ll_keyhash_custom,
'keyeq': ll_keyeq_custom,
'r_rdict_eqfn': r_rdict_eqfn,
'r_rdict_hashfn': r_rdict_hashfn,
'paranoia': True,
}
else:
# figure out which functions must be used to hash and compare
ll_keyhash = ll_hash_function
ll_keyeq = ll_eq_function
ll_keyhash = lltype.staticAdtMethod(ll_keyhash)
if ll_keyeq is not None:
ll_keyeq = lltype.staticAdtMethod(ll_keyeq)
adtmeths = {
'keyhash': ll_keyhash,
'keyeq': ll_keyeq,
'paranoia': False,
}
adtmeths['KEY'] = DICTKEY
adtmeths['VALUE'] = DICTVALUE
adtmeths['lookup_function'] = lltype.staticAdtMethod(
ll_call_lookup_function)
adtmeths['allocate'] = lltype.typeMethod(_ll_malloc_dict)
DICT.become(lltype.GcStruct("dicttable", adtmeths=adtmeths, *fields))
return DICT
