[cfe-dev] Auto-generation of ASTMatchers predicates from source code, proof-of-concept

[Evgeny Panasyuk]

18.06.2012 0:05, Manuel Klimek wrote:
>
>>         Or maybe about some interactive (maybe gui) tool for building
>>         predicates? I remember that Chandler mentioned about
>>         something similar at
>>         http://www.youtube.com/watch?v=yuIOGfcOH0k&t=27m56s
>>         <http://www.youtube.com/watch?v=yuIOGfcOH0k&t=27m56s>
>>
>>
>>     Now we're talking the next step :) Yea, having a GUI would be
>>     *great* (and just so we're clear: with GUI I mean a web page :P)
>
>     And maybe AST database optimized for fast predicate matches :)
>
>
> For small projects this might be interesting - for us the question is 
> how that would scale - we've found parsing the C++ code to be actually 
> an interesting way to scale the AST, for the small price of needing up 
> 3-4 seconds per TU (on average). Denormalizing the AST itself produces 
> a huge amount of data, and denormalizing even more seems like a 
> non-starter.
>
> Thoughts?

It depends on how much you would like to scale. And yes, it also depends 
on project sizes.
For instance, if required scaling is task per TU - it is one case.
If required scaling is many tasks (tens, hundreds) per TU - it is 
another story.

Best Regards,
Evgeny

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