[PATCH] D132008: [clang-format] Handle return type auto followed by l_paren

[Owen Pan via Phabricator via cfe-commits]

owenpan created this revision.
owenpan added reviewers: HazardyKnusperkeks, MyDeveloperDay, curdeius.
owenpan added a project: clang-format.
Herald added a project: All.
owenpan requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

Fixes https://github.com/llvm/llvm-project/issues/57160.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D132008

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
@@ -24887,7 +24887,7 @@
                                 // the user's own fault
   verifyFormat("integral auto(x) = y;"); // actually a declaration, but this is
                                          // clearly the user's own fault
-  verifyFormat("auto(*p)() = f;");       // actually a declaration; TODO FIXME
+  verifyFormat("auto (*p)() = f;");
 }
 
 TEST_F(FormatTest, Cpp20ModulesSupport) {
Index: clang/lib/Format/TokenAnnotator.cpp
===================================================================
--- clang/lib/Format/TokenAnnotator.cpp
+++ clang/lib/Format/TokenAnnotator.cpp
@@ -3337,9 +3337,11 @@
   }
 
   // trailing return type 'auto': []() -> auto {}, auto foo() -> auto {}
-  if (Left.is(tok::kw_auto) &&
-      Right.isOneOf(TT_LambdaLBrace, TT_FunctionLBrace))
+  if (Left.is(tok::kw_auto) && Right.isOneOf(TT_LambdaLBrace, TT_FunctionLBrace,
+                                             // function return type 'auto'
+                                             TT_FunctionTypeLParen)) {
     return true;
+  }
 
   // auto{x} auto(x)
   if (Left.is(tok::kw_auto) && Right.isOneOf(tok::l_paren, tok::l_brace))


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