forked from OSchip/llvm-project
9dc7816346
Summary:
The following C++ code was being detected by
`guessLanguage()` as Objective-C:
#define FOO(...) auto bar = [] __VA_ARGS__;
This was because `[] __VA_ARGS__` is not currently detected as a C++
lambda expression (it has no parens or braces), so
`TokenAnnotator::parseSquare()` incorrectly treats the opening square
as an ObjC method expression.
We have two options to fix this:
1. Parse `[] __VA_ARGS__` explicitly as a C++ lambda
2. Make it so `[]` is never parsed as an Objective-C method expression
This diff implements option 2, which causes the `[` to be parsed
as `TT_ArraySubscriptLSquare` instead of `TT_ObjCMethodExpr`.
Note that when I fixed this, it caused one change in formatting
behavior, where the following was implicitly relying on the `[`
being parsed as `TT_ObjCMethodExpr`:
A<int * []> a;
becomes:
A<int *[]> a;
with `Style.PointerAlignment = Middle`.
I don't really know what the desired format is for this syntax; the
test was added by Janusz Sobczak and integrated by @djasper in
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| AST | ||
| ASTMatchers | ||
| Analysis | ||
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| libclang | ||
| CMakeLists.txt | ||