Author: Lukas Diekmann <lukas.diekm...@uni-duesseldorf.de>
Branch: set-strategies
Changeset: r51220:95d8ecd1711f
Date: 2012-01-10 18:15 +0100
http://bitbucket.org/pypy/pypy/changeset/95d8ecd1711f/
Log: (cfbolz, l.diekmann): restructure some code: the speed hack in
FastListIterator is no longer there, so we don't need to use extend
here. Also, why was the generator path hidden in
_init_from_iterable?
diff --git a/pypy/objspace/std/iterobject.py b/pypy/objspace/std/iterobject.py
--- a/pypy/objspace/std/iterobject.py
+++ b/pypy/objspace/std/iterobject.py
@@ -29,9 +29,8 @@
class W_SeqIterObject(W_AbstractSeqIterObject):
"""Sequence iterator implementation for general sequences."""
-class W_FastListIterObject(W_AbstractSeqIterObject):
- """Sequence iterator specialized for lists, accessing
- directly their RPython-level list of wrapped objects.
+class W_FastListIterObject(W_AbstractSeqIterObject): # XXX still needed
+ """Sequence iterator specialized for lists.
"""
class W_FastTupleIterObject(W_AbstractSeqIterObject):
diff --git a/pypy/objspace/std/listobject.py b/pypy/objspace/std/listobject.py
--- a/pypy/objspace/std/listobject.py
+++ b/pypy/objspace/std/listobject.py
@@ -1035,26 +1035,26 @@
# this is on the silly side
w_iterable, = __args__.parse_obj(
None, 'list', init_signature, init_defaults)
- w_list.__init__(space, [])
if w_iterable is not None:
- # unfortunately this is duplicating space.unpackiterable to avoid
- # assigning a new RPython list to 'wrappeditems', which defeats the
- # W_FastListIterObject optimization.
if isinstance(w_iterable, W_ListObject):
- w_list.extend(w_iterable)
+ w_iterable.copy_into(w_list)
+ return
elif isinstance(w_iterable, W_TupleObject):
- w_list.extend(W_ListObject(space, w_iterable.wrappeditems[:]))
- else:
- _init_from_iterable(space, w_list, w_iterable)
+ W_ListObject(space, w_iterable.wrappeditems[:]).copy_into(w_list)
+ return
+ w_list.__init__(space, [])
+ # xxx special hack for speed
+ from pypy.interpreter.generator import GeneratorIterator
+ if isinstance(w_iterable, GeneratorIterator):
+ w_iterable.unpack_into_w(w_list)
+ return
+ # /xxx
+ _init_from_iterable(space, w_list, w_iterable)
+ else:
+ w_list.__init__(space, [])
def _init_from_iterable(space, w_list, w_iterable):
# in its own function to make the JIT look into init__List
- # xxx special hack for speed
- from pypy.interpreter.generator import GeneratorIterator
- if isinstance(w_iterable, GeneratorIterator):
- w_iterable.unpack_into_w(w_list)
- return
- # /xxx
w_iterator = space.iter(w_iterable)
while True:
try:
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