def __init__(self, rtyper, classdef, gcflavor='ignored'):
AbstractInstanceRepr.__init__(self, rtyper, classdef)
self.baserepr = None
if self.classdef is None:
self.lowleveltype = OBJECT
else:
b = self.classdef.basedef
if b is not None:
self.baserepr = getinstancerepr(rtyper, b)
b = self.baserepr.lowleveltype
else:
b = OBJECT
if hasattr(classdef.classdesc.pyobj, '_rpython_hints'):
hints = classdef.classdesc.pyobj._rpython_hints
else:
hints = {}
hints = self._check_for_immutable_hints(hints)
self.lowleveltype = ootype.Instance(classdef.name,
b, {}, {},
_hints=hints)
self.iprebuiltinstances = identity_dict()
self.object_type = self.lowleveltype
self.gcflavor = gcflavor
def gettype_from_unboxed(self, llops, vinst, can_be_none=False):
unboxedclass_repr = getclassrepr(self.rtyper, self.unboxedclassdef)
cunboxedcls = inputconst(CLASSTYPE, unboxedclass_repr.getvtable())
if self.is_parent:
# If the lltype of vinst shows that it cannot be a tagged value,
# we can directly read the typeptr. Otherwise, call a helper that
# checks if the tag bit is set in the pointer.
unboxedinstance_repr = getinstancerepr(self.rtyper,
self.unboxedclassdef)
try:
lltype.castable(unboxedinstance_repr.lowleveltype,
vinst.concretetype)
except lltype.InvalidCast:
can_be_tagged = False
else:
can_be_tagged = True
vinst = llops.genop('cast_pointer', [vinst],
resulttype=self.common_repr())
if can_be_tagged:
if can_be_none:
func = ll_unboxed_getclass_canbenone
else:
func = ll_unboxed_getclass
return llops.gendirectcall(func, vinst,
cunboxedcls)
elif can_be_none:
return llops.gendirectcall(ll_inst_type, vinst)
else:
ctypeptr = inputconst(lltype.Void, 'typeptr')
return llops.genop('getfield', [vinst, ctypeptr],
resulttype = CLASSTYPE)
else:
return cunboxedcls
def rtype_method_get(self, hop):
r_object = getinstancerepr(self.rtyper, None)
v_d, v_key = hop.inputargs(self, r_object)
hop.exception_cannot_occur()
v_result = hop.gendirectcall(ll_get, v_d, v_key)
v_result = hop.genop("cast_pointer", [v_result], resulttype=hop.r_result.lowleveltype)
return v_result
def setup_meta_instance(self, meta_instance, rsubcls):
if self.classdef is None:
rinstance = getinstancerepr(self.rtyper, rsubcls.classdef)
meta_instance.class_ = ootype.runtimeClass(rinstance.lowleveltype)
else:
# setup class attributes: for each attribute name at the level
# of 'self', look up its value in the subclass rsubcls
def assign(mangled_name, value):
if isinstance(value, flowmodel.Constant) and isinstance(
value.value, staticmethod):
value = flowmodel.Constant(value.value.__get__(
42)) # staticmethod => bare function
llvalue = r.convert_desc_or_const(value)
setattr(meta_instance, mangled_name, llvalue)
# extra PBC attributes
for (access_set, attr), (mangled_name,
r) in self.pbcfields.items():
if rsubcls.classdef.classdesc not in access_set.descs:
continue # only for the classes in the same pbc access set
if r.lowleveltype is ootype.Void:
continue
attrvalue = rsubcls.classdef.classdesc.read_attribute(
attr, None)
if attrvalue is not None:
assign(mangled_name, attrvalue)
# then initialize the 'super' portion of the vtable
self.rbase.setup_meta_instance(meta_instance, rsubcls)
def _setup_repr_final(self):
AbstractInstanceRepr._setup_repr_final(self)
if self.gcflavor == 'gc':
if (self.classdef is not None
and self.classdef.classdesc.lookup('__del__') is not None):
s_func = self.classdef.classdesc.s_read_attribute('__del__')
source_desc = self.classdef.classdesc.lookup('__del__')
source_classdef = source_desc.getclassdef(None)
source_repr = getinstancerepr(self.rtyper, source_classdef)
assert len(s_func.descriptions) == 1
funcdesc, = s_func.descriptions
graph = funcdesc.getuniquegraph()
self.check_graph_of_del_does_not_call_too_much(graph)
FUNCTYPE = FuncType([Ptr(source_repr.object_type)], Void)
destrptr = functionptr(FUNCTYPE,
graph.name,
graph=graph,
_callable=graph.func)
else:
destrptr = None
OBJECT = OBJECT_BY_FLAVOR[LLFLAVOR[self.gcflavor]]
self.rtyper.attachRuntimeTypeInfoFunc(self.object_type,
ll_runtime_type_info, OBJECT,
destrptr)
vtable = self.rclass.getvtable()
self.rtyper.set_type_for_typeptr(vtable, self.lowleveltype.TO)
def _setup_repr_final(self):
AbstractInstanceRepr._setup_repr_final(self)
if self.gcflavor == 'gc':
if (self.classdef is not None and
self.classdef.classdesc.lookup('__del__') is not None):
s_func = self.classdef.classdesc.s_read_attribute('__del__')
source_desc = self.classdef.classdesc.lookup('__del__')
source_classdef = source_desc.getclassdef(None)
source_repr = getinstancerepr(self.rtyper, source_classdef)
assert len(s_func.descriptions) == 1
funcdesc, = s_func.descriptions
graph = funcdesc.getuniquegraph()
self.check_graph_of_del_does_not_call_too_much(graph)
FUNCTYPE = FuncType([Ptr(source_repr.object_type)], Void)
destrptr = functionptr(FUNCTYPE, graph.name,
graph=graph,
_callable=graph.func)
else:
destrptr = None
OBJECT = OBJECT_BY_FLAVOR[LLFLAVOR[self.gcflavor]]
self.rtyper.attachRuntimeTypeInfoFunc(self.object_type,
ll_runtime_type_info,
OBJECT, destrptr)
vtable = self.rclass.getvtable()
self.rtyper.set_type_for_typeptr(vtable, self.lowleveltype.TO)
def __init__(self, rtyper, s_pbc):
self.rtyper = rtyper
self.s_pbc = s_pbc
mdescs = list(s_pbc.descriptions)
methodname = mdescs[0].name
classdef = mdescs[0].selfclassdef
flags = mdescs[0].flags
for mdesc in mdescs[1:]:
if mdesc.name != methodname:
raise TyperError("cannot find a unique name under which the "
"methods can be found: %r" % (
mdescs,))
if mdesc.flags != flags:
raise TyperError("inconsistent 'flags': %r versus %r" % (
mdesc.flags, flags))
classdef = classdef.commonbase(mdesc.selfclassdef)
if classdef is None:
raise TyperError("mixing methods coming from instances of "
"classes with no common base: %r" % (mdescs,))
self.methodname = methodname
self.classdef = classdef.get_owner(methodname)
# the low-level representation is just the bound 'self' argument.
self.s_im_self = annmodel.SomeInstance(self.classdef, flags=flags)
self.r_im_self = rclass.getinstancerepr(rtyper, self.classdef)
self.lowleveltype = self.r_im_self.lowleveltype
def externalvsinternal(rtyper, item_repr): # -> external_item_repr, (internal_)item_repr
from rpython.rtyper import rclass
if (isinstance(item_repr, rclass.InstanceRepr) and
getattr(item_repr, 'gcflavor', 'gc') == 'gc'):
return item_repr, rclass.getinstancerepr(rtyper, None)
else:
return item_repr, item_repr
def externalvsinternal(rtyper, item_repr): # -> external_item_repr, (internal_)item_repr
from rpython.rtyper import rclass
if (isinstance(item_repr, rclass.InstanceRepr) and
getattr(item_repr, 'gcflavor', 'gc') == 'gc'):
return item_repr, rclass.getinstancerepr(rtyper, None)
else:
return item_repr, item_repr
def setup_meta_instance(self, meta_instance, rsubcls):
if self.classdef is None:
rinstance = getinstancerepr(self.rtyper, rsubcls.classdef)
meta_instance.class_ = ootype.runtimeClass(rinstance.lowleveltype)
else:
# setup class attributes: for each attribute name at the level
# of 'self', look up its value in the subclass rsubcls
def assign(mangled_name, value):
if isinstance(value, flowmodel.Constant) and isinstance(value.value, staticmethod):
value = flowmodel.Constant(value.value.__get__(42)) # staticmethod => bare function
llvalue = r.convert_desc_or_const(value)
setattr(meta_instance, mangled_name, llvalue)
# extra PBC attributes
for (access_set, attr), (mangled_name, r) in self.pbcfields.items():
if rsubcls.classdef.classdesc not in access_set.descs:
continue # only for the classes in the same pbc access set
if r.lowleveltype is ootype.Void:
continue
attrvalue = rsubcls.classdef.classdesc.read_attribute(attr, None)
if attrvalue is not None:
assign(mangled_name, attrvalue)
# then initialize the 'super' portion of the vtable
self.rbase.setup_meta_instance(meta_instance, rsubcls)
def __init__(self, rtyper, s_pbc):
self.rtyper = rtyper
self.s_pbc = s_pbc
mdescs = list(s_pbc.descriptions)
methodname = mdescs[0].name
classdef = mdescs[0].selfclassdef
flags = mdescs[0].flags
for mdesc in mdescs[1:]:
if mdesc.name != methodname:
raise TyperError("cannot find a unique name under which the "
"methods can be found: %r" % (mdescs, ))
if mdesc.flags != flags:
raise TyperError("inconsistent 'flags': %r versus %r" %
(mdesc.flags, flags))
classdef = classdef.commonbase(mdesc.selfclassdef)
if classdef is None:
raise TyperError("mixing methods coming from instances of "
"classes with no common base: %r" %
(mdescs, ))
self.methodname = methodname
self.classdef = classdef.get_owner(methodname)
# the low-level representation is just the bound 'self' argument.
self.s_im_self = annmodel.SomeInstance(self.classdef, flags=flags)
self.r_im_self = rclass.getinstancerepr(rtyper, self.classdef)
self.lowleveltype = self.r_im_self.lowleveltype
def convert_const(self, weakdict):
if weakdict is None:
return lltype.nullptr(self.WEAKDICT)
if not isinstance(weakdict, RWeakValueDictionary):
raise TyperError("expected an RWeakValueDictionary: %r" %
(weakdict, ))
try:
key = Constant(weakdict)
return self.dict_cache[key]
except KeyError:
self.setup()
l_dict = self.ll_new_weakdict()
self.dict_cache[key] = l_dict
bk = self.rtyper.annotator.bookkeeper
classdef = bk.getuniqueclassdef(weakdict._valueclass)
r_value = getinstancerepr(self.rtyper, classdef)
any_value = False
for dictkey, dictvalue in weakdict._dict.items():
llkey = self.r_key.convert_const(dictkey)
llvalue = r_value.convert_const(dictvalue)
if llvalue:
llvalue = lltype.cast_pointer(rclass.OBJECTPTR, llvalue)
self.ll_set_nonnull(l_dict, llkey, llvalue)
any_value = True
if any_value:
l_dict.resize_counter = -1
return l_dict
def gettype_from_unboxed(self, llops, vinst, can_be_none=False):
unboxedclass_repr = getclassrepr(self.rtyper, self.unboxedclassdef)
cunboxedcls = inputconst(CLASSTYPE, unboxedclass_repr.getvtable())
if self.is_parent:
# If the lltype of vinst shows that it cannot be a tagged value,
# we can directly read the typeptr. Otherwise, call a helper that
# checks if the tag bit is set in the pointer.
unboxedinstance_repr = getinstancerepr(self.rtyper,
self.unboxedclassdef)
try:
lltype.castable(unboxedinstance_repr.lowleveltype,
vinst.concretetype)
except lltype.InvalidCast:
can_be_tagged = False
else:
can_be_tagged = True
vinst = llops.genop('cast_pointer', [vinst],
resulttype=self.common_repr())
if can_be_tagged:
if can_be_none:
func = ll_unboxed_getclass_canbenone
else:
func = ll_unboxed_getclass
return llops.gendirectcall(func, vinst, cunboxedcls)
elif can_be_none:
return llops.gendirectcall(ll_inst_type, vinst)
else:
ctypeptr = inputconst(lltype.Void, 'typeptr')
return llops.genop('getfield', [vinst, ctypeptr],
resulttype=CLASSTYPE)
else:
return cunboxedcls
def rtype_method_get(self, hop):
r_object = getinstancerepr(self.rtyper, None)
v_d, v_key = hop.inputargs(self, r_object)
hop.exception_cannot_occur()
v_result = hop.gendirectcall(ll_get, v_d, v_key)
v_result = hop.genop("cast_pointer", [v_result],
resulttype=hop.r_result.lowleveltype)
return v_result
def rtype_method_set(self, hop):
r_object = getinstancerepr(self.rtyper, None)
v_d, v_key, v_value = hop.inputargs(self, self.r_key, r_object)
hop.exception_cannot_occur()
if hop.args_s[2].is_constant() and hop.args_s[2].const is None:
hop.gendirectcall(self.ll_set_null, v_d, v_key)
else:
hop.gendirectcall(self.ll_set, v_d, v_key, v_value)
def getruntime(self, expected_type):
if expected_type == ootype.Class:
rinstance = getinstancerepr(self.rtyper, self.classdef)
return ootype.runtimeClass(rinstance.lowleveltype)
else:
assert ootype.isSubclass(expected_type, META)
meta = self.get_meta_instance(cast_to_root_meta=False)
return ootype.ooupcast(expected_type, meta)
def getruntime(self, expected_type):
if expected_type == ootype.Class:
rinstance = getinstancerepr(self.rtyper, self.classdef)
return ootype.runtimeClass(rinstance.lowleveltype)
else:
assert ootype.isSubclass(expected_type, META)
meta = self.get_meta_instance(cast_to_root_meta=False)
return ootype.ooupcast(expected_type, meta)
def redispatch_call(self, hop, call_args):
s_instance = hop.s_result
r_instance = hop.r_result
if len(self.s_pbc.descriptions) == 1:
# instantiating a single class
if self.lowleveltype is not Void:
assert 0, "XXX None-or-1-class instantation not implemented"
assert isinstance(s_instance, annmodel.SomeInstance)
classdef = s_instance.classdef
s_init = classdef.classdesc.s_read_attribute('__init__')
v_init = Constant("init-func-dummy") # this value not really used
if (isinstance(s_init, annmodel.SomeImpossibleValue)
and classdef.classdesc.is_exception_class()
and classdef.has_no_attrs()):
# special case for instanciating simple built-in
# exceptions: always return the same prebuilt instance,
# and ignore any arguments passed to the constructor.
r_instance = rclass.getinstancerepr(hop.rtyper, classdef)
example = r_instance.get_reusable_prebuilt_instance()
hop.exception_cannot_occur()
return hop.inputconst(r_instance.lowleveltype, example)
v_instance = rclass.rtype_new_instance(hop.rtyper, classdef,
hop.llops, hop)
if isinstance(v_instance, tuple):
v_instance, must_call_init = v_instance
if not must_call_init:
return v_instance
else:
# instantiating a class from multiple possible classes
vtypeptr = hop.inputarg(self, arg=0)
try:
access_set, r_class = self.get_access_set('__init__')
except rclass.MissingRTypeAttribute:
s_init = annmodel.s_ImpossibleValue
else:
s_init = access_set.s_value
v_init = r_class.getpbcfield(vtypeptr, access_set, '__init__',
hop.llops)
v_instance = self._instantiate_runtime_class(
hop, vtypeptr, r_instance)
if isinstance(s_init, annmodel.SomeImpossibleValue):
assert hop.nb_args == 1, ("arguments passed to __init__, "
"but no __init__!")
hop.exception_cannot_occur()
else:
hop2 = self.replace_class_with_inst_arg(hop, v_instance,
s_instance, call_args)
hop2.v_s_insertfirstarg(v_init, s_init) # add 'initfunc'
hop2.s_result = annmodel.s_None
hop2.r_result = self.rtyper.getrepr(hop2.s_result)
# now hop2 looks like simple_call(initfunc, instance, args...)
hop2.dispatch()
return v_instance
def setup_vtable(self, vtable, rsubcls):
"""Initialize the 'self' portion of the 'vtable' belonging to the
given subclass."""
if self.classdef is None:
vtable.hash = hash(rsubcls)
# initialize the 'subclassrange_*' and 'name' fields
if rsubcls.classdef is not None:
#vtable.parenttypeptr = rsubcls.rbase.getvtable()
vtable.subclassrange_min = rsubcls.classdef.minid
vtable.subclassrange_max = rsubcls.classdef.maxid
else: #for the root class
vtable.subclassrange_min = 0
vtable.subclassrange_max = sys.maxint
rinstance = getinstancerepr(self.rtyper, rsubcls.classdef)
rinstance.setup()
if rinstance.gcflavor == 'gc':
vtable.rtti = getRuntimeTypeInfo(rinstance.object_type)
if rsubcls.classdef is None:
name = 'object'
else:
name = rsubcls.classdef.shortname
vtable.name = alloc_array_name(name)
if hasattr(rsubcls.classdef, 'my_instantiate_graph'):
graph = rsubcls.classdef.my_instantiate_graph
vtable.instantiate = self.rtyper.getcallable(graph)
#else: the classdef was created recently, so no instantiate()
# could reach it
else:
# setup class attributes: for each attribute name at the level
# of 'self', look up its value in the subclass rsubcls
def assign(mangled_name, value):
if isinstance(value, Constant) and isinstance(value.value, staticmethod):
value = Constant(value.value.__get__(42)) # staticmethod => bare function
llvalue = r.convert_desc_or_const(value)
setattr(vtable, mangled_name, llvalue)
mro = list(rsubcls.classdef.getmro())
for fldname in self.clsfields:
mangled_name, r = self.clsfields[fldname]
if r.lowleveltype is Void:
continue
value = rsubcls.classdef.classdesc.read_attribute(fldname, None)
if value is not None:
assign(mangled_name, value)
# extra PBC attributes
for (access_set, attr), (mangled_name, r) in self.pbcfields.items():
if rsubcls.classdef.classdesc not in access_set.descs:
continue # only for the classes in the same pbc access set
if r.lowleveltype is Void:
continue
attrvalue = rsubcls.classdef.classdesc.read_attribute(attr, None)
if attrvalue is not None:
assign(mangled_name, attrvalue)
# then initialize the 'super' portion of the vtable
self.rbase.setup_vtable(vtable.super, rsubcls)
def redispatch_call(self, hop, call_args):
s_instance = hop.s_result
r_instance = hop.r_result
if len(self.s_pbc.descriptions) == 1:
# instantiating a single class
if self.lowleveltype is not Void:
assert 0, "XXX None-or-1-class instantation not implemented"
assert isinstance(s_instance, annmodel.SomeInstance)
classdef = s_instance.classdef
s_init = classdef.classdesc.s_read_attribute('__init__')
v_init = Constant("init-func-dummy") # this value not really used
if (isinstance(s_init, annmodel.SomeImpossibleValue) and
classdef.classdesc.is_exception_class() and
classdef.has_no_attrs()):
# special case for instanciating simple built-in
# exceptions: always return the same prebuilt instance,
# and ignore any arguments passed to the contructor.
r_instance = rclass.getinstancerepr(hop.rtyper, classdef)
example = r_instance.get_reusable_prebuilt_instance()
hop.exception_cannot_occur()
return hop.inputconst(r_instance.lowleveltype, example)
v_instance = rclass.rtype_new_instance(hop.rtyper, classdef,
hop.llops, hop)
if isinstance(v_instance, tuple):
v_instance, must_call_init = v_instance
if not must_call_init:
return v_instance
else:
# instantiating a class from multiple possible classes
vtypeptr = hop.inputarg(self, arg=0)
try:
access_set, r_class = self.get_access_set('__init__')
except rclass.MissingRTypeAttribute:
s_init = annmodel.s_ImpossibleValue
else:
s_init = access_set.s_value
v_init = r_class.getpbcfield(vtypeptr, access_set, '__init__',
hop.llops)
v_instance = self._instantiate_runtime_class(hop, vtypeptr, r_instance)
if isinstance(s_init, annmodel.SomeImpossibleValue):
assert hop.nb_args == 1, ("arguments passed to __init__, "
"but no __init__!")
hop.exception_cannot_occur()
else:
hop2 = self.replace_class_with_inst_arg(
hop, v_instance, s_instance, call_args)
hop2.v_s_insertfirstarg(v_init, s_init) # add 'initfunc'
hop2.s_result = annmodel.s_None
hop2.r_result = self.rtyper.getrepr(hop2.s_result)
# now hop2 looks like simple_call(initfunc, instance, args...)
hop2.dispatch()
return v_instance
def __init__(self, rtyper):
# (NB. rclass identifies 'Exception' and 'object')
r_type = rtyper.rootclass_repr
r_instance = getinstancerepr(rtyper, None)
r_type.setup()
r_instance.setup()
self.r_exception_type = r_type
self.r_exception_value = r_instance
self.lltype_of_exception_type = r_type.lowleveltype
self.lltype_of_exception_value = r_instance.lowleveltype
self.rtyper = rtyper
def __init__(self, rtyper):
# (NB. rclass identifies 'Exception' and 'object')
r_type = rtyper.rootclass_repr
r_instance = getinstancerepr(rtyper, None)
r_type.setup()
r_instance.setup()
self.r_exception_type = r_type
self.r_exception_value = r_instance
self.lltype_of_exception_type = r_type.lowleveltype
self.lltype_of_exception_value = r_instance.lowleveltype
self.rtyper = rtyper
def __init__(self, rtyper):
self.make_standard_exceptions(rtyper)
# (NB. rclass identifies 'Exception' and 'object')
r_type = rclass.getclassrepr(rtyper, None)
r_instance = rclass.getinstancerepr(rtyper, None)
r_type.setup()
r_instance.setup()
self.r_exception_type = r_type
self.r_exception_value = r_instance
self.lltype_of_exception_type = r_type.lowleveltype
self.lltype_of_exception_value = r_instance.lowleveltype
self.rtyper = rtyper
def convert_const(self, weakdict):
if not isinstance(weakdict, RWeakValueDictionary):
raise TyperError("expected an RWeakValueDictionary: %r" % (
weakdict,))
try:
key = Constant(weakdict)
return self.dict_cache[key]
except KeyError:
self.setup()
l_dict = self.ll_new_weakdict()
self.dict_cache[key] = l_dict
bk = self.rtyper.annotator.bookkeeper
classdef = bk.getuniqueclassdef(weakdict._valueclass)
r_value = getinstancerepr(self.rtyper, classdef)
for dictkey, dictvalue in weakdict._dict.items():
llkey = self.r_key.convert_const(dictkey)
llvalue = r_value.convert_const(dictvalue)
if llvalue:
llvalue = lltype.cast_pointer(rclass.OBJECTPTR, llvalue)
self.ll_set_nonnull(l_dict, llkey, llvalue)
return l_dict
def __init__(self, rtyper, classdef, gcflavor='ignored'):
AbstractInstanceRepr.__init__(self, rtyper, classdef)
self.baserepr = None
if self.classdef is None:
self.lowleveltype = OBJECT
else:
b = self.classdef.basedef
if b is not None:
self.baserepr = getinstancerepr(rtyper, b)
b = self.baserepr.lowleveltype
else:
b = OBJECT
if hasattr(classdef.classdesc.pyobj, '_rpython_hints'):
hints = classdef.classdesc.pyobj._rpython_hints
else:
hints = {}
hints = self._check_for_immutable_hints(hints)
self.lowleveltype = ootype.Instance(classdef.name, b, {}, {}, _hints = hints)
self.iprebuiltinstances = identity_dict()
self.object_type = self.lowleveltype
self.gcflavor = gcflavor
def run_guards_translated(gcremovetypeptr):
class A(object):
pass
class B(A):
pass
class C(B):
pass
def main(argv):
A(); B().foo = len(argv); C()
return 0
t = TranslationContext()
t.config.translation.gc = "minimark"
t.config.translation.gcremovetypeptr = gcremovetypeptr
ann = t.buildannotator()
ann.build_types(main, [s_list_of_strings], main_entry_point=True)
rtyper = t.buildrtyper()
rtyper.specialize()
classdef = ann.bookkeeper.getuniqueclassdef(B)
rclass = getclassrepr(rtyper, classdef)
rinstance = getinstancerepr(rtyper, classdef)
LLB = rinstance.lowleveltype.TO
ptr_vtable_B = rclass.getvtable()
adr_vtable_B = llmemory.cast_ptr_to_adr(ptr_vtable_B)
vtable_B = llmemory.cast_adr_to_int(adr_vtable_B, mode="symbolic")
CPU = getcpuclass()
cpu = CPU(rtyper, NoStats(),
translate_support_code=True,
gcdescr=get_description(t.config))
execute_token = cpu.make_execute_token(llmemory.GCREF)
finaldescr = BasicFinalDescr()
faildescr = BasicFailDescr()
descr_B = cpu.sizeof(LLB, ptr_vtable_B)
typeid_B = descr_B.get_type_id()
fielddescr_B = cpu.fielddescrof(LLB, 'inst_foo')
LLD = lltype.GcStruct('D', ('dd', lltype.Signed))
descr_D = cpu.sizeof(LLD)
fielddescr_D = cpu.fielddescrof(LLD, 'dd')
ARRAY = lltype.GcArray(lltype.Signed)
arraydescr = cpu.arraydescrof(ARRAY)
loop1 = parse("""
[p0]
guard_class(p0, ConstInt(vtable_B), descr=faildescr) []
finish(descr=finaldescr)
""", namespace={'finaldescr': finaldescr,
'faildescr': faildescr,
'vtable_B': vtable_B})
loop2 = parse("""
[p0]
guard_gc_type(p0, ConstInt(typeid_B), descr=faildescr) []
finish(descr=finaldescr)
""", namespace={'finaldescr': finaldescr,
'faildescr': faildescr,
'typeid_B': typeid_B})
loop3 = parse("""
[p0]
guard_is_object(p0, descr=faildescr) []
finish(descr=finaldescr)
""", namespace={'finaldescr': finaldescr,
'faildescr': faildescr})
loop4 = parse("""
[p0]
guard_subclass(p0, ConstInt(vtable_B), descr=faildescr) []
finish(descr=finaldescr)
""", namespace={'finaldescr': finaldescr,
'faildescr': faildescr,
'vtable_B': vtable_B})
def g():
cpu.setup_once()
token1 = JitCellToken()
token2 = JitCellToken()
token3 = JitCellToken()
token4 = JitCellToken()
cpu.compile_loop(loop1.inputargs, loop1.operations, token1)
cpu.compile_loop(loop2.inputargs, loop2.operations, token2)
cpu.compile_loop(loop3.inputargs, loop3.operations, token3)
cpu.compile_loop(loop4.inputargs, loop4.operations, token4)
for token, p0 in [
(token1, rffi.cast(llmemory.GCREF, A())),
(token1, rffi.cast(llmemory.GCREF, B())),
(token1, rffi.cast(llmemory.GCREF, C())),
(token2, rffi.cast(llmemory.GCREF, A())),
(token2, rffi.cast(llmemory.GCREF, B())),
(token2, rffi.cast(llmemory.GCREF, C())),
(token2, rffi.cast(llmemory.GCREF, [42, 43])),
(token3, rffi.cast(llmemory.GCREF, A())),
(token3, rffi.cast(llmemory.GCREF, B())),
(token3, rffi.cast(llmemory.GCREF, [44, 45])),
(token4, rffi.cast(llmemory.GCREF, A())),
(token4, rffi.cast(llmemory.GCREF, B())),
(token4, rffi.cast(llmemory.GCREF, C())),
]:
frame = execute_token(token, p0)
descr = cpu.get_latest_descr(frame)
if descr is finaldescr:
print 'match'
elif descr is faildescr:
print 'fail'
else:
print '???'
#
if token is token2: # guard_gc_type
print int(cpu.get_actual_typeid(p0) == typeid_B)
if token is token3: # guard_is_object
print int(cpu.check_is_object(p0))
for p0 in [lltype.nullptr(llmemory.GCREF.TO),
rffi.cast(llmemory.GCREF, A()),
rffi.cast(llmemory.GCREF, B()),
rffi.cast(llmemory.GCREF, C()),
rffi.cast(llmemory.GCREF, lltype.malloc(LLD)),
rffi.cast(llmemory.GCREF, lltype.malloc(ARRAY, 5)),
rffi.cast(llmemory.GCREF, "foobar"),
rffi.cast(llmemory.GCREF, u"foobaz")]:
results = ['B', 'D', 'A', 'S', 'U']
try:
cpu.protect_speculative_field(p0, fielddescr_B)
except SpeculativeError:
results[0] = '-'
try:
cpu.protect_speculative_field(p0, fielddescr_D)
except SpeculativeError:
results[1] = '-'
try:
cpu.protect_speculative_array(p0, arraydescr)
except SpeculativeError:
results[2] = '-'
try:
cpu.protect_speculative_string(p0)
except SpeculativeError:
results[3] = '-'
try:
cpu.protect_speculative_unicode(p0)
except SpeculativeError:
results[4] = '-'
print ''.join(results)
call_initial_function(t, g)
cbuilder = genc.CStandaloneBuilder(t, main, t.config)
cbuilder.generate_source(defines=cbuilder.DEBUG_DEFINES)
cbuilder.compile()
data = cbuilder.cmdexec('')
assert data == ('fail\n'
'match\n'
'fail\n'
'fail\n' '0\n'
'match\n' '1\n'
'fail\n' '0\n'
'fail\n' '0\n'
'match\n' '1\n'
'match\n' '1\n'
'fail\n' '0\n'
'fail\n'
'match\n'
'match\n'
'-----\n' # null
'-----\n' # instance of A
'B----\n' # instance of B
'B----\n' # instance of C
'-D---\n'
'--A--\n'
'---S-\n'
'----U\n'
)
def _instantiate_runtime_class(self, hop, v_class, r_instance):
classdef = hop.s_result.classdef
resulttype = getinstancerepr(hop.rtyper, classdef).lowleveltype
# convert v_class from META to ootype.Class if necessary:
v_class = get_type_repr(hop.rtyper).fromclasstype(v_class, hop.llops)
return hop.genop('runtimenew', [v_class], resulttype=resulttype)
def _setup_repr(self, llfields=None, hints=None):
if hints:
self.lowleveltype._hints.update(hints)
if self.classdef is None:
self.fields = {}
self.allfields = {}
self.allmethods = {}
self.allclassattributes = {}
self.classattributes = {}
return
if self.baserepr is not None:
allfields = self.baserepr.allfields.copy()
allmethods = self.baserepr.allmethods.copy()
allclassattributes = self.baserepr.allclassattributes.copy()
else:
allfields = {}
allmethods = {}
allclassattributes = {}
fields = {}
nonmangledfields = []
fielddefaults = {}
if llfields:
fields.update(dict(llfields))
selfattrs = self.classdef.attrs
for name, attrdef in selfattrs.iteritems():
mangled = mangle(name, self.rtyper.getconfig())
if not attrdef.readonly:
repr = self.rtyper.getrepr(attrdef.s_value)
allfields[mangled] = repr
oot = repr.lowleveltype
fields[mangled] = oot
nonmangledfields.append(name)
try:
value = self.classdef.classdesc.read_attribute(name)
fielddefaults[mangled] = repr.convert_desc_or_const(value)
except AttributeError:
pass
else:
s_value = attrdef.s_value
if isinstance(s_value, annmodel.SomePBC):
if len(s_value.descriptions) > 0 and s_value.getKind() == description.MethodDesc:
# attrdef is for a method
if mangled in allclassattributes:
raise TyperError("method overrides class attribute")
allmethods[mangled] = name, self.classdef.lookup_filter(s_value)
continue
# class attribute
if mangled in allmethods:
raise TyperError("class attribute overrides method")
allclassattributes[mangled] = name, s_value
special_methods = ["__init__", "__del__"]
for meth_name in special_methods:
if meth_name not in selfattrs and \
self.classdef.classdesc.find_source_for(meth_name) is not None:
s_meth = self.classdef.classdesc.s_get_value(self.classdef,
meth_name)
if isinstance(s_meth, annmodel.SomePBC):
mangled = mangle(meth_name, self.rtyper.getconfig())
allmethods[mangled] = meth_name, s_meth
# else: it's the __init__ of a builtin exception
ootype.addFields(self.lowleveltype, fields)
self.rbase = getinstancerepr(self.rtyper, self.classdef.basedef)
self.rbase.setup()
for name, attrdef in selfattrs.iteritems():
if not attrdef.readonly and self.is_quasi_immutable(name):
name = mangle('mutable_' + name, self.rtyper.getconfig())
ootype.addFields(self.lowleveltype, {name: OBJECT})
classattributes = {}
baseInstance = self.lowleveltype._superclass
classrepr = getclassrepr(self.rtyper, self.classdef)
# if this class has a corresponding metaclass, attach
# a getmeta() method to get the corresponding meta_instance
if classrepr.lowleveltype != ootype.Class:
oovalue = classrepr.get_meta_instance()
self.attach_class_attr_accessor('getmeta', oovalue)
for classdef in self.classdef.getmro():
for name, attrdef in classdef.attrs.iteritems():
if not attrdef.readonly:
continue
mangled = mangle(name, self.rtyper.getconfig())
if mangled in allclassattributes:
selfdesc = self.classdef.classdesc
if name not in selfattrs:
# if the attr was already found in a parent class,
# we register it again only if it is overridden.
if selfdesc.find_source_for(name) is None:
continue
value = selfdesc.read_attribute(name)
else:
# otherwise, for new attrs, we look in all parent
# classes to see if it's defined in a parent but only
# actually first used in self.classdef.
value = selfdesc.read_attribute(name, None)
# a non-method class attribute
if not attrdef.s_value.is_constant():
classattributes[mangled] = attrdef.s_value, value
self.fields = nonmangledfields
self.allfields = allfields
self.allmethods = allmethods
self.allclassattributes = allclassattributes
self.classattributes = classattributes
# the following is done after the rest of the initialization because
# convert_const can require 'self' to be fully initialized.
# step 2: provide default values for fields
for mangled, impl in fielddefaults.items():
oot = fields[mangled]
ootype.addFields(self.lowleveltype, {mangled: (oot, impl)},
with_default=True)
def run_guards_translated(gcremovetypeptr):
class A(object):
pass
class B(A):
pass
class C(B):
pass
def main(argv):
A()
B().foo = len(argv)
C()
return 0
t = TranslationContext()
t.config.translation.gc = "minimark"
t.config.translation.gcremovetypeptr = gcremovetypeptr
ann = t.buildannotator()
ann.build_types(main, [s_list_of_strings], main_entry_point=True)
rtyper = t.buildrtyper()
rtyper.specialize()
classdef = ann.bookkeeper.getuniqueclassdef(B)
rclass = getclassrepr(rtyper, classdef)
rinstance = getinstancerepr(rtyper, classdef)
LLB = rinstance.lowleveltype.TO
ptr_vtable_B = rclass.getvtable()
adr_vtable_B = llmemory.cast_ptr_to_adr(ptr_vtable_B)
vtable_B = llmemory.cast_adr_to_int(adr_vtable_B, mode="symbolic")
CPU = getcpuclass()
cpu = CPU(rtyper,
NoStats(),
translate_support_code=True,
gcdescr=get_description(t.config))
execute_token = cpu.make_execute_token(llmemory.GCREF)
finaldescr = BasicFinalDescr()
faildescr = BasicFailDescr()
descr_B = cpu.sizeof(LLB, ptr_vtable_B)
typeid_B = descr_B.get_type_id()
fielddescr_B = cpu.fielddescrof(LLB, 'inst_foo')
LLD = lltype.GcStruct('D', ('dd', lltype.Signed))
descr_D = cpu.sizeof(LLD)
fielddescr_D = cpu.fielddescrof(LLD, 'dd')
ARRAY = lltype.GcArray(lltype.Signed)
arraydescr = cpu.arraydescrof(ARRAY)
loop1 = parse("""
[p0]
guard_class(p0, ConstInt(vtable_B), descr=faildescr) []
finish(descr=finaldescr)
""",
namespace={
'finaldescr': finaldescr,
'faildescr': faildescr,
'vtable_B': vtable_B
})
loop1a = parse("""
[p0]
guard_nonnull_class(p0, ConstInt(vtable_B), descr=faildescr) []
finish(descr=finaldescr)
""",
namespace={
'finaldescr': finaldescr,
'faildescr': faildescr,
'vtable_B': vtable_B
})
loop2 = parse("""
[p0]
guard_gc_type(p0, ConstInt(typeid_B), descr=faildescr) []
finish(descr=finaldescr)
""",
namespace={
'finaldescr': finaldescr,
'faildescr': faildescr,
'typeid_B': typeid_B
})
loop3 = parse("""
[p0]
guard_is_object(p0, descr=faildescr) []
finish(descr=finaldescr)
""",
namespace={
'finaldescr': finaldescr,
'faildescr': faildescr
})
loop4 = parse("""
[p0]
guard_subclass(p0, ConstInt(vtable_B), descr=faildescr) []
finish(descr=finaldescr)
""",
namespace={
'finaldescr': finaldescr,
'faildescr': faildescr,
'vtable_B': vtable_B
})
def g():
cpu.setup_once()
token1 = JitCellToken()
token1a = JitCellToken()
token2 = JitCellToken()
token3 = JitCellToken()
token4 = JitCellToken()
cpu.compile_loop(loop1.inputargs, loop1.operations, token1)
cpu.compile_loop(loop1a.inputargs, loop1a.operations, token1a)
cpu.compile_loop(loop2.inputargs, loop2.operations, token2)
cpu.compile_loop(loop3.inputargs, loop3.operations, token3)
cpu.compile_loop(loop4.inputargs, loop4.operations, token4)
for token, p0 in [
(token1, rffi.cast(llmemory.GCREF, A())),
(token1, rffi.cast(llmemory.GCREF, B())),
(token1, rffi.cast(llmemory.GCREF, C())),
(token1a, rffi.cast(llmemory.GCREF, A())),
(token1a, lltype.nullptr(llmemory.GCREF.TO)),
(token1a, rffi.cast(llmemory.GCREF, B())),
(token1a, rffi.cast(llmemory.GCREF, C())),
(token2, rffi.cast(llmemory.GCREF, A())),
(token2, rffi.cast(llmemory.GCREF, B())),
(token2, rffi.cast(llmemory.GCREF, C())),
(token2, rffi.cast(llmemory.GCREF, [42, 43])),
(token3, rffi.cast(llmemory.GCREF, A())),
(token3, rffi.cast(llmemory.GCREF, B())),
(token3, rffi.cast(llmemory.GCREF, [44, 45])),
(token4, rffi.cast(llmemory.GCREF, A())),
(token4, rffi.cast(llmemory.GCREF, B())),
(token4, rffi.cast(llmemory.GCREF, C())),
]:
frame = execute_token(token, p0)
descr = cpu.get_latest_descr(frame)
if descr is finaldescr:
print 'match'
elif descr is faildescr:
print 'fail'
else:
print '???'
#
if token is token2: # guard_gc_type
print int(cpu.get_actual_typeid(p0) == typeid_B)
if token is token3: # guard_is_object
print int(cpu.check_is_object(p0))
for p0 in [
lltype.nullptr(llmemory.GCREF.TO),
rffi.cast(llmemory.GCREF, A()),
rffi.cast(llmemory.GCREF, B()),
rffi.cast(llmemory.GCREF, C()),
rffi.cast(llmemory.GCREF, lltype.malloc(LLD)),
rffi.cast(llmemory.GCREF, lltype.malloc(ARRAY, 5)),
rffi.cast(llmemory.GCREF, "foobar"),
rffi.cast(llmemory.GCREF, u"foobaz")
]:
results = ['B', 'D', 'A', 'S', 'U']
try:
cpu.protect_speculative_field(p0, fielddescr_B)
except SpeculativeError:
results[0] = '-'
try:
cpu.protect_speculative_field(p0, fielddescr_D)
except SpeculativeError:
results[1] = '-'
try:
cpu.protect_speculative_array(p0, arraydescr)
except SpeculativeError:
results[2] = '-'
try:
cpu.protect_speculative_string(p0)
except SpeculativeError:
results[3] = '-'
try:
cpu.protect_speculative_unicode(p0)
except SpeculativeError:
results[4] = '-'
print ''.join(results)
call_initial_function(t, g)
cbuilder = genc.CStandaloneBuilder(t, main, t.config)
cbuilder.generate_source(defines=cbuilder.DEBUG_DEFINES)
cbuilder.compile()
data = cbuilder.cmdexec('')
assert data == (
'fail\n'
'match\n'
'fail\n'
'fail\n'
'fail\n'
'match\n'
'fail\n'
'fail\n'
'0\n'
'match\n'
'1\n'
'fail\n'
'0\n'
'fail\n'
'0\n'
'match\n'
'1\n'
'match\n'
'1\n'
'fail\n'
'0\n'
'fail\n'
'match\n'
'match\n'
'-----\n' # null
'-----\n' # instance of A
'B----\n' # instance of B
'B----\n' # instance of C
'-D---\n'
'--A--\n'
'---S-\n'
'----U\n')
def specialize_call(self, hop):
r_generic_object = getinstancerepr(hop.rtyper, None)
[v] = hop.inputargs(r_generic_object) # might generate a cast_pointer
hop.exception_cannot_occur()
return v
def get_standard_ll_exc_instance(self, rtyper, clsdef):
r_inst = getinstancerepr(rtyper, clsdef)
example = r_inst.get_reusable_prebuilt_instance()
example = ll_cast_to_object(example)
return example
def specialize_call(self, hop):
r_generic_object = getinstancerepr(hop.rtyper, None)
[v] = hop.inputargs(r_generic_object) # might generate a cast_pointer
hop.exception_cannot_occur()
return v
def common_repr(self): # -> object or nongcobject reprs
return getinstancerepr(self.rtyper, None, self.gcflavor)
def get_standard_ll_exc_instance(self, rtyper, clsdef):
r_inst = getinstancerepr(rtyper, clsdef)
example = r_inst.get_reusable_prebuilt_instance()
example = ll_cast_to_object(example)
return example
def run_guards_translated(gcremovetypeptr):
class A(object):
pass
class B(A):
pass
class C(B):
pass
def main(argv):
A(); B(); C()
return 0
t = TranslationContext()
t.config.translation.gc = "minimark"
t.config.translation.gcremovetypeptr = gcremovetypeptr
ann = t.buildannotator()
ann.build_types(main, [s_list_of_strings], main_entry_point=True)
rtyper = t.buildrtyper()
rtyper.specialize()
classdef = ann.bookkeeper.getuniqueclassdef(B)
rclass = getclassrepr(rtyper, classdef)
rinstance = getinstancerepr(rtyper, classdef)
LLB = rinstance.lowleveltype.TO
vtable_B = rclass.getvtable()
adr_vtable_B = llmemory.cast_ptr_to_adr(vtable_B)
vtable_B = llmemory.cast_adr_to_int(adr_vtable_B, mode="symbolic")
CPU = getcpuclass()
cpu = CPU(rtyper, NoStats(),
translate_support_code=True,
gcdescr=get_description(t.config))
execute_token = cpu.make_execute_token(llmemory.GCREF)
finaldescr = BasicFinalDescr()
faildescr = BasicFailDescr()
descr_B = cpu.sizeof(LLB, vtable_B)
typeid_B = descr_B.get_type_id()
loop1 = parse("""
[p0]
guard_class(p0, ConstInt(vtable_B), descr=faildescr) []
finish(descr=finaldescr)
""", namespace={'finaldescr': finaldescr,
'faildescr': faildescr,
'vtable_B': vtable_B})
loop2 = parse("""
[p0]
guard_gc_type(p0, ConstInt(typeid_B), descr=faildescr) []
finish(descr=finaldescr)
""", namespace={'finaldescr': finaldescr,
'faildescr': faildescr,
'typeid_B': typeid_B})
loop3 = parse("""
[p0]
guard_is_object(p0, descr=faildescr) []
finish(descr=finaldescr)
""", namespace={'finaldescr': finaldescr,
'faildescr': faildescr})
loop4 = parse("""
[p0]
guard_subclass(p0, ConstInt(vtable_B), descr=faildescr) []
finish(descr=finaldescr)
""", namespace={'finaldescr': finaldescr,
'faildescr': faildescr,
'vtable_B': vtable_B})
def g():
cpu.setup_once()
token1 = JitCellToken()
token2 = JitCellToken()
token3 = JitCellToken()
token4 = JitCellToken()
cpu.compile_loop(loop1.inputargs, loop1.operations, token1)
cpu.compile_loop(loop2.inputargs, loop2.operations, token2)
cpu.compile_loop(loop3.inputargs, loop3.operations, token3)
cpu.compile_loop(loop4.inputargs, loop4.operations, token4)
for token, p0 in [
(token1, rffi.cast(llmemory.GCREF, A())),
(token1, rffi.cast(llmemory.GCREF, B())),
(token1, rffi.cast(llmemory.GCREF, C())),
(token2, rffi.cast(llmemory.GCREF, A())),
(token2, rffi.cast(llmemory.GCREF, B())),
(token2, rffi.cast(llmemory.GCREF, C())),
(token2, rffi.cast(llmemory.GCREF, [42, 43])),
(token3, rffi.cast(llmemory.GCREF, A())),
(token3, rffi.cast(llmemory.GCREF, B())),
(token3, rffi.cast(llmemory.GCREF, [44, 45])),
(token4, rffi.cast(llmemory.GCREF, A())),
(token4, rffi.cast(llmemory.GCREF, B())),
(token4, rffi.cast(llmemory.GCREF, C())),
]:
frame = execute_token(token, p0)
descr = cpu.get_latest_descr(frame)
if descr is finaldescr:
print 'match'
elif descr is faildescr:
print 'fail'
else:
print '???'
#
if token is token2: # guard_gc_type
print int(cpu.get_actual_typeid(p0) == typeid_B)
if token is token3: # guard_is_object
print int(cpu.check_is_object(p0))
call_initial_function(t, g)
cbuilder = genc.CStandaloneBuilder(t, main, t.config)
cbuilder.generate_source(defines=cbuilder.DEBUG_DEFINES)
cbuilder.compile()
data = cbuilder.cmdexec('')
assert data == ('fail\n'
'match\n'
'fail\n'
'fail\n' '0\n'
'match\n' '1\n'
'fail\n' '0\n'
'fail\n' '0\n'
'match\n' '1\n'
'match\n' '1\n'
'fail\n' '0\n'
'fail\n'
'match\n'
'match\n')
v = llops.genop('cast_pointer', [v],
resulttype = r_ins2.lowleveltype)
return v
else:
return NotImplemented
def rtype_is_((r_ins1, r_ins2), hop):
if r_ins1.gcflavor != r_ins2.gcflavor:
# obscure logic, the is can be true only if both are None
v_ins1, v_ins2 = hop.inputargs(r_ins1.common_repr(), r_ins2.common_repr())
return hop.gendirectcall(ll_both_none, v_ins1, v_ins2)
if r_ins1.classdef is None or r_ins2.classdef is None:
basedef = None
else:
basedef = r_ins1.classdef.commonbase(r_ins2.classdef)
r_ins = getinstancerepr(r_ins1.rtyper, basedef, r_ins1.gcflavor)
return pairtype(Repr, Repr).rtype_is_(pair(r_ins, r_ins), hop)
rtype_eq = rtype_is_
def rtype_ne(rpair, hop):
v = rpair.rtype_eq(hop)
return hop.genop("bool_not", [v], resulttype=Bool)
# ____________________________________________________________
#
# Low-level implementation of operations on classes and instances
# doesn't work for non-gc stuff!
def ll_cast_to_object(obj):
return cast_pointer(OBJECTPTR, obj)
def common_repr(self): # -> object or nongcobject reprs
return getinstancerepr(self.rtyper, None, self.gcflavor)
def _setup_repr(self, llfields=None, hints=None, adtmeths=None):
# NOTE: don't store mutable objects like the dicts below on 'self'
# before they are fully built, to avoid strange bugs in case
# of recursion where other code would uses these
# partially-initialized dicts.
AbstractInstanceRepr._setup_repr(self)
self.rclass = getclassrepr(self.rtyper, self.classdef)
fields = {}
allinstancefields = {}
if self.classdef is None:
fields['__class__'] = 'typeptr', get_type_repr(self.rtyper)
else:
# instance attributes
attrs = self.classdef.attrs.items()
attrs.sort()
myllfields = []
for name, attrdef in attrs:
if not attrdef.readonly:
r = self.rtyper.getrepr(attrdef.s_value)
mangled_name = 'inst_' + name
fields[name] = mangled_name, r
myllfields.append((mangled_name, r.lowleveltype))
# Sort the instance attributes by decreasing "likely size",
# as reported by rffi.sizeof(), to minimize padding holes in C.
# Fields of the same size are sorted by name (by attrs.sort()
# above) just to minimize randomness.
def keysize((_, T)):
if T is lltype.Void:
return None
from rpython.rtyper.lltypesystem.rffi import sizeof
try:
return -sizeof(T)
except StandardError:
return None
myllfields.sort(key=keysize)
if llfields is None:
llfields = myllfields
else:
llfields = llfields + myllfields
self.rbase = getinstancerepr(self.rtyper, self.classdef.basedef,
self.gcflavor)
self.rbase.setup()
MkStruct = lltype.STRUCT_BY_FLAVOR[LLFLAVOR[self.gcflavor]]
if adtmeths is None:
adtmeths = {}
if hints is None:
hints = {}
hints = self._check_for_immutable_hints(hints)
kwds = {}
if self.gcflavor == 'gc':
kwds['rtti'] = True
for name, attrdef in attrs:
if not attrdef.readonly and self.is_quasi_immutable(name):
llfields.append(('mutate_' + name, OBJECTPTR))
object_type = MkStruct(self.classdef.name,
('super', self.rbase.object_type),
hints=hints,
adtmeths=adtmeths,
*llfields,
**kwds)
self.object_type.become(object_type)
allinstancefields.update(self.rbase.allinstancefields)
allinstancefields.update(fields)
self.fields = fields
self.allinstancefields = allinstancefields
def get_standard_ll_exc_instance(self, rtyper, clsdef):
rclass = rtyper.type_system.rclass
r_inst = rclass.getinstancerepr(rtyper, clsdef)
example = r_inst.get_reusable_prebuilt_instance()
example = self.cast_exception(self.lltype_of_exception_value, example)
return example
def _setup_repr(self, llfields=None, hints=None, adtmeths=None):
# NOTE: don't store mutable objects like the dicts below on 'self'
# before they are fully built, to avoid strange bugs in case
# of recursion where other code would uses these
# partially-initialized dicts.
AbstractInstanceRepr._setup_repr(self)
self.rclass = getclassrepr(self.rtyper, self.classdef)
fields = {}
allinstancefields = {}
if self.classdef is None:
fields['__class__'] = 'typeptr', get_type_repr(self.rtyper)
else:
# instance attributes
attrs = self.classdef.attrs.items()
attrs.sort()
myllfields = []
for name, attrdef in attrs:
if not attrdef.readonly:
r = self.rtyper.getrepr(attrdef.s_value)
mangled_name = 'inst_' + name
fields[name] = mangled_name, r
myllfields.append((mangled_name, r.lowleveltype))
# Sort the instance attributes by decreasing "likely size",
# as reported by rffi.sizeof(), to minimize padding holes in C.
# Fields of the same size are sorted by name (by attrs.sort()
# above) just to minimize randomness.
def keysize((_, T)):
if T is lltype.Void:
return None
from rpython.rtyper.lltypesystem.rffi import sizeof
try:
return -sizeof(T)
except StandardError:
return None
myllfields.sort(key = keysize)
if llfields is None:
llfields = myllfields
else:
llfields = llfields + myllfields
self.rbase = getinstancerepr(self.rtyper, self.classdef.basedef,
self.gcflavor)
self.rbase.setup()
MkStruct = lltype.STRUCT_BY_FLAVOR[LLFLAVOR[self.gcflavor]]
if adtmeths is None:
adtmeths = {}
if hints is None:
hints = {}
hints = self._check_for_immutable_hints(hints)
kwds = {}
if self.gcflavor == 'gc':
kwds['rtti'] = True
for name, attrdef in attrs:
if not attrdef.readonly and self.is_quasi_immutable(name):
llfields.append(('mutate_' + name, OBJECTPTR))
object_type = MkStruct(self.classdef.name,
('super', self.rbase.object_type),
hints=hints,
adtmeths=adtmeths,
*llfields,
**kwds)
self.object_type.become(object_type)
allinstancefields.update(self.rbase.allinstancefields)
allinstancefields.update(fields)
self.fields = fields
self.allinstancefields = allinstancefields
def _setup_repr(self, llfields=None, hints=None):
if hints:
self.lowleveltype._hints.update(hints)
if self.classdef is None:
self.fields = {}
self.allfields = {}
self.allmethods = {}
self.allclassattributes = {}
self.classattributes = {}
return
if self.baserepr is not None:
allfields = self.baserepr.allfields.copy()
allmethods = self.baserepr.allmethods.copy()
allclassattributes = self.baserepr.allclassattributes.copy()
else:
allfields = {}
allmethods = {}
allclassattributes = {}
fields = {}
nonmangledfields = []
fielddefaults = {}
if llfields:
fields.update(dict(llfields))
selfattrs = self.classdef.attrs
for name, attrdef in selfattrs.iteritems():
mangled = mangle(name, self.rtyper.getconfig())
if not attrdef.readonly:
repr = self.rtyper.getrepr(attrdef.s_value)
allfields[mangled] = repr
oot = repr.lowleveltype
fields[mangled] = oot
nonmangledfields.append(name)
try:
value = self.classdef.classdesc.read_attribute(name)
fielddefaults[mangled] = repr.convert_desc_or_const(value)
except AttributeError:
pass
else:
s_value = attrdef.s_value
if isinstance(s_value, annmodel.SomePBC):
if len(s_value.descriptions) > 0 and s_value.getKind(
) == description.MethodDesc:
# attrdef is for a method
if mangled in allclassattributes:
raise TyperError(
"method overrides class attribute")
allmethods[
mangled] = name, self.classdef.lookup_filter(
s_value)
continue
# class attribute
if mangled in allmethods:
raise TyperError("class attribute overrides method")
allclassattributes[mangled] = name, s_value
special_methods = ["__init__", "__del__"]
for meth_name in special_methods:
if meth_name not in selfattrs and \
self.classdef.classdesc.find_source_for(meth_name) is not None:
s_meth = self.classdef.classdesc.s_get_value(
self.classdef, meth_name)
if isinstance(s_meth, annmodel.SomePBC):
mangled = mangle(meth_name, self.rtyper.getconfig())
allmethods[mangled] = meth_name, s_meth
# else: it's the __init__ of a builtin exception
ootype.addFields(self.lowleveltype, fields)
self.rbase = getinstancerepr(self.rtyper, self.classdef.basedef)
self.rbase.setup()
for name, attrdef in selfattrs.iteritems():
if not attrdef.readonly and self.is_quasi_immutable(name):
name = mangle('mutable_' + name, self.rtyper.getconfig())
ootype.addFields(self.lowleveltype, {name: OBJECT})
classattributes = {}
baseInstance = self.lowleveltype._superclass
classrepr = getclassrepr(self.rtyper, self.classdef)
# if this class has a corresponding metaclass, attach
# a getmeta() method to get the corresponding meta_instance
if classrepr.lowleveltype != ootype.Class:
oovalue = classrepr.get_meta_instance()
self.attach_class_attr_accessor('getmeta', oovalue)
for classdef in self.classdef.getmro():
for name, attrdef in classdef.attrs.iteritems():
if not attrdef.readonly:
continue
mangled = mangle(name, self.rtyper.getconfig())
if mangled in allclassattributes:
selfdesc = self.classdef.classdesc
if name not in selfattrs:
# if the attr was already found in a parent class,
# we register it again only if it is overridden.
if selfdesc.find_source_for(name) is None:
continue
value = selfdesc.read_attribute(name)
else:
# otherwise, for new attrs, we look in all parent
# classes to see if it's defined in a parent but only
# actually first used in self.classdef.
value = selfdesc.read_attribute(name, None)
# a non-method class attribute
if not attrdef.s_value.is_constant():
classattributes[mangled] = attrdef.s_value, value
self.fields = nonmangledfields
self.allfields = allfields
self.allmethods = allmethods
self.allclassattributes = allclassattributes
self.classattributes = classattributes
# the following is done after the rest of the initialization because
# convert_const can require 'self' to be fully initialized.
# step 2: provide default values for fields
for mangled, impl in fielddefaults.items():
oot = fields[mangled]
ootype.addFields(self.lowleveltype, {mangled: (oot, impl)},
with_default=True)
resulttype=r_ins2.lowleveltype)
return v
else:
return NotImplemented
def rtype_is_((r_ins1, r_ins2), hop):
if r_ins1.gcflavor != r_ins2.gcflavor:
# obscure logic, the is can be true only if both are None
v_ins1, v_ins2 = hop.inputargs(r_ins1.common_repr(),
r_ins2.common_repr())
return hop.gendirectcall(ll_both_none, v_ins1, v_ins2)
if r_ins1.classdef is None or r_ins2.classdef is None:
basedef = None
else:
basedef = r_ins1.classdef.commonbase(r_ins2.classdef)
r_ins = getinstancerepr(r_ins1.rtyper, basedef, r_ins1.gcflavor)
return pairtype(Repr, Repr).rtype_is_(pair(r_ins, r_ins), hop)
rtype_eq = rtype_is_
def rtype_ne(rpair, hop):
v = rpair.rtype_eq(hop)
return hop.genop("bool_not", [v], resulttype=Bool)
# ____________________________________________________________
#
# Low-level implementation of operations on classes and instances
# doesn't work for non-gc stuff!
def setup_vtable(self, vtable, rsubcls):
"""Initialize the 'self' portion of the 'vtable' belonging to the
given subclass."""
if self.classdef is None:
vtable.hash = hash(rsubcls)
# initialize the 'subclassrange_*' and 'name' fields
if rsubcls.classdef is not None:
#vtable.parenttypeptr = rsubcls.rbase.getvtable()
vtable.subclassrange_min = rsubcls.classdef.minid
vtable.subclassrange_max = rsubcls.classdef.maxid
else: #for the root class
vtable.subclassrange_min = 0
vtable.subclassrange_max = sys.maxint
rinstance = getinstancerepr(self.rtyper, rsubcls.classdef)
rinstance.setup()
if rinstance.gcflavor == 'gc':
vtable.rtti = getRuntimeTypeInfo(rinstance.object_type)
if rsubcls.classdef is None:
name = 'object'
else:
name = rsubcls.classdef.shortname
vtable.name = alloc_array_name(name)
if hasattr(rsubcls.classdef, 'my_instantiate_graph'):
graph = rsubcls.classdef.my_instantiate_graph
vtable.instantiate = self.rtyper.getcallable(graph)
#else: the classdef was created recently, so no instantiate()
# could reach it
else:
# setup class attributes: for each attribute name at the level
# of 'self', look up its value in the subclass rsubcls
def assign(mangled_name, value):
if isinstance(value, Constant) and isinstance(
value.value, staticmethod):
value = Constant(value.value.__get__(
42)) # staticmethod => bare function
llvalue = r.convert_desc_or_const(value)
setattr(vtable, mangled_name, llvalue)
mro = list(rsubcls.classdef.getmro())
for fldname in self.clsfields:
mangled_name, r = self.clsfields[fldname]
if r.lowleveltype is Void:
continue
value = rsubcls.classdef.classdesc.read_attribute(
fldname, None)
if value is not None:
assign(mangled_name, value)
# extra PBC attributes
for (access_set, attr), (mangled_name,
r) in self.pbcfields.items():
if rsubcls.classdef.classdesc not in access_set.descs:
continue # only for the classes in the same pbc access set
if r.lowleveltype is Void:
continue
attrvalue = rsubcls.classdef.classdesc.read_attribute(
attr, None)
if attrvalue is not None:
assign(mangled_name, attrvalue)
# then initialize the 'super' portion of the vtable
self.rbase.setup_vtable(vtable.super, rsubcls)
def _instantiate_runtime_class(self, hop, v_class, r_instance):
classdef = hop.s_result.classdef
resulttype = getinstancerepr(hop.rtyper, classdef).lowleveltype
# convert v_class from META to ootype.Class if necessary:
v_class = get_type_repr(hop.rtyper).fromclasstype(v_class, hop.llops)
return hop.genop('runtimenew', [v_class], resulttype=resulttype)
