[PATCH] D64632: [clang-format] Don't detect call to ObjC class method as C++11 attribute specifier

[Robbie Gibson via Phabricator via cfe-commits]

rkgibson2 created this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D64632

Files:
  clang/lib/Format/TokenAnnotator.cpp
  clang/unittests/Format/FormatTest.cpp


Index: clang/unittests/Format/FormatTest.cpp
===================================================================
--- clang/unittests/Format/FormatTest.cpp
+++ clang/unittests/Format/FormatTest.cpp
@@ -7027,6 +7027,10 @@
   // On the other hand, we still need to correctly find array subscripts.
   verifyFormat("int a = std::vector<int>{1, 2, 3}[0];");
 
+  // Make sure that we do not mistake a call to the Objective-C method named
+  // "class" inside an array literal as attributes.
+  verifyFormat("@[ [NSArray class] ];");
+
   // Make sure we do not parse attributes as lambda introducers.
   FormatStyle MultiLineFunctions = getLLVMStyle();
   MultiLineFunctions.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
Index: clang/lib/Format/TokenAnnotator.cpp
===================================================================
--- clang/lib/Format/TokenAnnotator.cpp
+++ clang/lib/Format/TokenAnnotator.cpp
@@ -400,9 +400,11 @@
     while (AttrTok && !AttrTok->startsSequence(tok::r_square, tok::r_square)) {
       // ObjC message send. We assume nobody will use : in a C++11 attribute
       // specifier parameter, although this is technically valid:
-      // [[foo(:)]]
+      // [[foo(:)]]. 'class' is a common ObjC method selector, so allow it as
+      // well.
       if (AttrTok->is(tok::colon) ||
           AttrTok->startsSequence(tok::identifier, tok::identifier) ||
+          AttrTok->startsSequence(tok::identifier, tok::kw_class) ||
           AttrTok->startsSequence(tok::r_paren, tok::identifier))
         return false;
       if (AttrTok->is(tok::ellipsis))


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