[pypy-svn] r70959 - pypy/trunk/pypy/objspace/std

[arigo at codespeak.net]

Author: arigo
Date: Thu Jan 28 19:57:48 2010
New Revision: 70959

Modified:
   pypy/trunk/pypy/objspace/std/stringobject.py
Log:
Comment: the trick that CPython does in ``"xyz" * 10000''.


Modified: pypy/trunk/pypy/objspace/std/stringobject.py
==============================================================================
--- pypy/trunk/pypy/objspace/std/stringobject.py	(original)
+++ pypy/trunk/pypy/objspace/std/stringobject.py	Thu Jan 28 19:57:48 2010
@@ -861,6 +861,10 @@
             "repeated string is too long: %d times %d characters",
             mul, input_len)
     # XXX maybe only do this when input has a big length
+    # XXX CPython tricks:
+    #       - if input has length 1, use memset
+    #       - otherwise, use memcpy to repeatedly double the size of the
+    #         string (i.e. compute the "square" of the string)
     return joined(space, [input] * mul)
 
 def mul__String_ANY(space, w_str, w_times):