Re: [boost] [proto] grammar compile error

Subject: Re: [boost] [proto] grammar compile error
From: Eric Niebler (eric_at_[hidden])
Date: 2009-07-04 13:29:41

Felipe Magno de Almeida wrote:
> And I want to create the looser grammar, composed of all
> sub-expressions inside the full grammar somehow. Is there a way to do
> this in proto, or should I start creating it with mpl?
> Is there a way to iterate a grammar?

This sounds like more work than is truly necessary. There is really only 
one good reason to specify a grammar when defining a domain, and that is 
to disable troublesome operator overloads. My suggestion would be to not 
specify your dsel's grammar up front, but rather only validate full 
expressions at the point of evaluation. You lose no safety that way.

-- 
Eric Niebler
BoostPro Computing
http://www.boostpro.com