Author: Maciej Fijalkowski <[email protected]>
Branch:
Changeset: r78637:7ebfda5c3881
Date: 2015-07-23 15:45 +0200
http://bitbucket.org/pypy/pypy/changeset/7ebfda5c3881/
Log: (fijal, arigo) add a fast-path straight from cpython
diff --git a/pypy/module/__builtin__/test/test_abstractinst.py
b/pypy/module/__builtin__/test/test_abstractinst.py
--- a/pypy/module/__builtin__/test/test_abstractinst.py
+++ b/pypy/module/__builtin__/test/test_abstractinst.py
@@ -202,3 +202,18 @@
__subclass__ = set([int])
assert issubclass(int, Integer)
assert issubclass(int, (Integer,))
+
+ def test_dont_call_instancecheck_fast_path(self):
+ called = []
+
+ class M(type):
+ def __instancecheck__(self, obj):
+ saddsadsa
+ called.append("called")
+
+ class C:
+ __metaclass__ = M
+
+ c = C()
+ assert isinstance(c, C)
+ assert not called
diff --git a/pypy/objspace/descroperation.py b/pypy/objspace/descroperation.py
--- a/pypy/objspace/descroperation.py
+++ b/pypy/objspace/descroperation.py
@@ -521,6 +521,8 @@
return space.get_and_call_function(w_check, w_type, w_sub)
def isinstance_allow_override(space, w_inst, w_type):
+ if space.type(w_inst) is w_type:
+ return space.w_True # fast path copied from cpython
w_check = space.lookup(w_type, "__instancecheck__")
if w_check is not None:
return space.get_and_call_function(w_check, w_type, w_inst)
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