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Re: syntax_error constructor is declared inline


From: Frank Heckenbach
Subject: Re: syntax_error constructor is declared inline
Date: Thu, 15 Mar 2018 07:41:11 +0100

Hans Åberg wrote:

> >> It could be deliberate to avoid them being exported. But C++ now
> >> has namespaces, which cann be used to avoid name conflicts.
> > 
> > It's all in a namespace anyway (yy by default) and we're only
> > talking about a constructor, so no name conflicts. I think it was a
> > simple mistake.
> 
> It would seem reasonable that the C++ parser has fewer options,
> with say always headers for example. The stack, location and
> position headers might be in the parser header, so there is no
> conflict when using multiple parsers.

I don't particularly like those extra headers (see my mail in the
other thread "Generated headers"), but for now I don't want to
change more than necessary.

But I generally agree that fewer options are necessary due to more
features of C++. In particular, in my C++17 version, I had to
disable "%printer" for variants and "%destructor" (with and without
variants) in favour of standard C++ overloading. This was also a
consequence of the problems with type overrides (e.g. in mid-rule
actions).

Regards,
Frank



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