hugoeg added inline comments.
================
Comment at: clang-tidy/abseil/NoNamespaceCheck.cpp:23
+
+ Finder->addMatcher(namespaceDecl(hasName("absl")).bind("absl_namespace"),
+ this);
----------------
deannagarcia wrote:
> aaron.ballman wrote:
> > hokein wrote:
> > > aaron.ballman wrote:
> > > > I think this needs a `not(isExpansionInSystemHeader())` in there, as
> > > > this is going to trigger on code that includes a header file using an
> > > > `absl` namespace. If I'm incorrect and users typically include abseil
> > > > as something other than system includes, you'll have to find a
> > > > different way to solve this.
> > > Yeah, we have discussed this issue internally. abseil-user code usually
> > > includes abseil header like `#include
> > > "whatever/abseil/base/optimization.h"`, so `IsExpansionInSystemHeader`
> > > doesn't work for most cases.
> > >
> > > We need a way to filter out all headers being a part of abseil library. I
> > > think we can create a matcher `InExpansionInAbseilHeader` -- basically
> > > using `IsExpansionInFileMatching` with a regex expression that matches
> > > typical abseil include path. What do you think?
> > >
> > > And we'll have more abseil checks (e.g. `abseil-no-internal-deps`) that
> > > use `InExpansionInAbseilHeader`, we should put it to a common header.
> > I think that is a sensible approach.
> We will begin working on this, I think it will first be implemented in
> abseil-no-internal-deps but once it looks good I will add it to this patch.
I'm going to go ahead a implement this in ASTMatchers.h and include it on the
patch for **abseil-no-internal-dep**s
https://reviews.llvm.org/D50580
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