Author: Brian Kearns <[email protected]>
Branch:
Changeset: r71267:c1705fbd5f73
Date: 2014-05-04 16:32 -0400
http://bitbucket.org/pypy/pypy/changeset/c1705fbd5f73/
Log: allow jit to look inside buf.getslice if size is constant
diff --git a/rpython/rlib/buffer.py b/rpython/rlib/buffer.py
--- a/rpython/rlib/buffer.py
+++ b/rpython/rlib/buffer.py
@@ -1,7 +1,7 @@
"""
Buffer protocol support.
"""
-from rpython.rlib.objectmodel import import_from_mixin
+from rpython.rlib import jit
class Buffer(object):
@@ -21,6 +21,7 @@
"Returns the index'th character in the buffer."
raise NotImplementedError # Must be overriden. No bounds checks.
+ @jit.look_inside_iff(lambda self, start, stop, step, size:
jit.isconstant(size))
def getslice(self, start, stop, step, size):
# May be overridden. No bounds checks.
return ''.join([self.getitem(i) for i in range(start, stop, step)])
diff --git a/rpython/rlib/rstruct/formatiterator.py
b/rpython/rlib/rstruct/formatiterator.py
--- a/rpython/rlib/rstruct/formatiterator.py
+++ b/rpython/rlib/rstruct/formatiterator.py
@@ -82,6 +82,7 @@
def finished(self):
pass
+
class CalcSizeFormatIterator(FormatIterator):
totalsize = 0
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