On 25.10.2012 08:42, Nick Coghlan wrote: >> Why are any of these codecs here in unicodeobjectland in the first >> place? Sure, they're needed so that Python can find its own stuff, >> but in principle *any* codec could be needed. Is it just an heuristic >> that the codecs needed for 99% of the world are here, and other codecs >> live in separate modules? > > I believe it's a combination of history and whether or not they're > needed by the interpreter during the bootstrapping process before the > encodings namespace is importable.
They are in unicodeobject.c so that the compilers can inline the code in the various other places where they are used in the Unicode implementation directly as necessary and because the codecs use a lot of functions from the Unicode API (obviously), so the other direction of inlining (Unicode API in codecs) is needed as well. BTW: When discussing compiler optimizations, please remember that there are more compilers out there than just GCC and also the fact that not everyone is using the latest and greatest version of it. Link time inlining will usually not be as efficient as compile time optimization and we need every bit of performance we can get for Unicode in Python 3. -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Oct 25 2012) >>> Python Projects, Consulting and Support ... http://www.egenix.com/ >>> mxODBC.Zope/Plone.Database.Adapter ... http://zope.egenix.com/ >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ ________________________________________________________________________ 2012-09-27: Released eGenix PyRun 1.1.0 ... http://egenix.com/go35 2012-09-26: Released mxODBC.Connect 2.0.1 ... http://egenix.com/go34 2012-10-29: PyCon DE 2012, Leipzig, Germany ... 4 days to go ::: Try our new mxODBC.Connect Python Database Interface for free ! :::: eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48 D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg Registered at Amtsgericht Duesseldorf: HRB 46611 http://www.egenix.com/company/contact/ _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
