djasper added inline comments.
================
Comment at: lib/Format/TokenAnnotator.cpp:155
+ Next->startsSequence(tok::identifier, tok::l_square,
+ tok::numeric_constant, tok::r_square,
+ tok::r_paren, tok::l_paren))) {
----------------
benhamilton wrote:
> djasper wrote:
> > This seems suspect. Does it have to be a numeric_constant?
> Probably not, any constexpr would do, I suspect. What's the best way to parse
> that?
I think this is the same answer for both of your questions. If what you are
trying to prevent "FOO(^)" to be parsed as a block, wouldn't it be enough to
look for whether there is a "(" after the ")" or even only after "(^)",
everything else is already correct IIUC? That would get you out of need to
parse the specifics here, which will be hard.
Or thinking about it another way. Previously, every "(^" would be parsed as an
ObjC block. There seems to be only a really rare corner case in which it isn't
(macros). Thus, I'd just try to detect that corner case. Instead you are
completely inverting the defaults (defaulting to "^" is not a block) and then
try to exactly parse ObjC where there might be many cases and edge cases that
you won't even think of now.
Repository:
rC Clang
https://reviews.llvm.org/D43906
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