Re: [boost] Re: Formal Review: The Spirit Parser Framework.

From: David Abrahams (dave_at_[hidden])
Date: 2002-10-14 11:17:59

"Peter Dimov" <pdimov_at_[hidden]> writes:

> From: "Joel de Guzman" <djowel_at_[hidden]>
> > From: "Carl Daniel" <cpdaniel_at_[hidden]>
> >
> > > More nits:
> > >
> > > Exception classes thrown by Spirit (parser_error<>,
> illegal_backtracking)
> > > don't derive from std::exception - shouldn't they?
> >
> > I'm not sure. Should it? What will be the benefits in doing so?
> > The truth is, I'm not quite happy with the standard C++ exceptions.
> > For one, it's hard coded the what() to be a string.
> 
> Yes, they should, allowing a single catch handler to catch them. Yes, this
> applies even in cases where the exceptions are "not supposed to" break
> outside a limited context.

One reason this might be a good idea is just to avoid quirks of many
platforms/implementations which fall outside the C++ standard, such as
entanglements with thread cancellation and OS interrupts.

-- 
           David Abrahams * Boost Consulting
dave_at_[hidden] * http://www.boost-consulting.com