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Re: Help sought from C++ expert: is this `value' a type or something els
From: |
Óscar Fuentes |
Subject: |
Re: Help sought from C++ expert: is this `value' a type or something else (what)? |
Date: |
Thu, 19 Jan 2023 17:22:41 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) |
Alan Mackenzie <acm@muc.de> writes:
> Hello, Emacs.
>
> In the following test file, templates-9.cc from the CC Mode test suite,
> on the indicated line, what is the syntactic significance of `value'?
> Traditionally, it has fontified with the default face, but recently after
> some (not yet committed) changes in CC Mode, it has started getting
> font-lock-type-face.
>
> I don't understand the file at all, hardly, and can't work out whether
> the old (non-) fontification was correct, or whether the new
> fontification of f-l-type-face is correct. Help would be appreciated.
>
> Just as a matter of interest, in c++-ts-mode a treesit-query-error gets
> thrown. It isn't clear to me whether the file is still valid C++.
It is not valid C++ because it misses quite a few declarations.
The parser has no way of knowing what `value' is unless it can see the
relevant declarations. And even then, in the general case, it is not
possible to really know unless your "parser" is, actually, a C++ front
end. So both c++-mode and c++-ts-mode are out of their breadth here.
IMAO, a reasonable heuristic is to consider it a value unless it is
preceded by `typename'.
- Re: Help sought from C++ expert: is this `value' a type or something else (what)?, (continued)
Re: Help sought from C++ expert: is this `value' a type or something else (what)?, Michael Welsh Duggan, 2023/01/19
Re: Help sought from C++ expert: is this `value' a type or something else (what)?,
Óscar Fuentes <=