Re: Attribute compatibility and Semantic actions

On 15/02/2011 05:17, Joel de Guzman wrote:

> Now, I committed code to the boost trunk that allows attribute
> compatibility on semantic actions. This code (Boost trunk) will
> kick in when you
>
>       #define BOOST_SPIRIT_ACTIONS_ALLOW_ATTR_COMPAT
>
> This is necessary because the code is **will break existing code**.
> Without the define, the old behavior will work as usual.
>
> So, what are the advantages:
>
> 1) The nice attribute compatibility rules can now apply to
>      semantic actions giving us uniform behavior
> 2) Parsers with semantic actions will now be a lot more
>      efficient. While semantic-action-less attribute grammars
>      are cool, a lot of times, we still have to resort to SAs
>      to do some computation. This behavior will again give SAs
>      equal footing in terms of performance.

This is great news!
I'll define this macro and test across my applications ASAP.

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