[Python-Dev] Split unicodeobject.c into subfiles

[M.-A. Lemburg]

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
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