On Wed, Jan 10, 2018 at 10:24:00PM +0100, Tim van Deurzen wrote:
> On 01/10/2018 02:00 PM, Jonathan Wakely wrote:
>
> > On 9 Jan 2018 10:56 p.m., "Tim van Deurzen" wrote:
> >
> >
> > Just to confirm with you, it does make sense to conditionally
> > parse the token for operator<=> in libcpp (i.e. only when the cxx
> > standard being used is >=2a)? I'm just wondering if this does not
> > accidentally affect other front-ends using libcpp?
> >
> >
> > Other front ends won't setthe language to C++2a.
> >
> > I think the relevant check is:
> >
> > if (CPP_OPTION (pfile, lang) == CLK_CXX2A
> > || CPP_OPTION (pfile, lang) == CLK_GNUCXX2A)
> >
> > This can only be true for a C++ source file when the standard is C++2a.
> >
> Ok, good to know, then I'll proceed like this. Thank you!
Well, the usual way of doing stuff is add another field to
struct lang_flags, add it to the lang_defaults table, add it to
struct cpp_options too and then use CPP_OPTION (pfile, spaceship) or so,
e.g. look how va_opt etc. are implemented.
Jakub
