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

From: Joel de Guzman (djowel_at_[hidden])
Date: 2002-10-13 04:10:11

----- Original Message ----- 
From: "Hartmut Kaiser" <hartmutkaiser_at_[hidden]>

> Joel de Guzman wrote:
> 
> > A solution I have in mind is make the rule class accept a
> > bool template parameter ... bool copyable = false>. When one
> > needs to deal with dynamic parsing which will involve the
> > manipulation of rules, placing them in stacks, maps, vectors etc.,
> > then she can set it to true. All the rest will be happy with this
> > set to false as default.
> 
> Seem to solve all problems at once: no confusion anymore for the average
> Spirit user and the possibility to fine tune things for special cases.
> This BTW reflects the situation, we had in Spirit V1.3, there the rule<>
> had the 'non-confusing' semantics and the copyable_rule<> the sematics,
> the rule<> have today. One note though: we need to expose the actual
> rule semantics through a typedef to allow for meta tricks.

Agreed. In addition, we'll need some means to bidirectionally assign from
both types of rules.

Cheers,
--Joel