[Python-Dev] C AST to Python discussion

Thomas Wouters thomas at xs4all.net
Wed Feb 15 11:03:09 CET 2006

On Wed, Feb 15, 2006 at 07:28:36PM +1000, Nick Coghlan wrote:

> On the 'unusable AST' front, if AST transformation code creates illegal
> output, then the main thing is to raise an exception complaining about
> what's wrong with it. I believe that may need a change to the compiler
> whether the modified AST was serialised or not.

I would personally prefer the AST validation to be a separate part of the
compiler. It means the one or the other can be out of sync, but it also
means it can be accessed directly (validating AST before sending it to the
compiler) and the compiler (or CFG generator, or something between AST and
CFG) can decide not to validate internally generated AST for non-debug
builds, for instance.

I like both those reasons.

Thomas Wouters <thomas at xs4all.net>

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