[clang-format] Correctly annotate overloaded operator function name

The operator keyword preceded by a template closer should be annotated as
TT_FunctionDeclarationName.

Fixes #63879.

Differential Revision: https://reviews.llvm.org/D155358

diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index 52973a3..fbcc3a0 100644 (file)
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -3175,7 +3175,7 @@ static bool isFunctionDeclarationName(bool IsCpp, const FormatToken &Current,
         !Previous->isOneOf(tok::kw_return, tok::kw_co_return)) {
       return true;
     }
-    if (!Previous->isOneOf(tok::star, tok::amp, tok::ampamp))
+    if (!Previous->isOneOf(tok::star, tok::amp, tok::ampamp, TT_TemplateCloser))
       return false;
     Next = skipOperatorName(Next);
   } else {

diff --git a/clang/unittests/Format/TokenAnnotatorTest.cpp b/clang/unittests/Format/TokenAnnotatorTest.cpp
index 8767b97..fd42dfd 100644 (file)
--- a/clang/unittests/Format/TokenAnnotatorTest.cpp
+++ b/clang/unittests/Format/TokenAnnotatorTest.cpp
@@ -717,6 +717,16 @@ TEST_F(TokenAnnotatorTest, UnderstandsOverloadedOperators) {
   EXPECT_TOKEN(Tokens[9], tok::plus, TT_OverloadedOperator);
   EXPECT_TOKEN(Tokens[10], tok::l_paren, TT_OverloadedOperatorLParen);
   EXPECT_TOKEN(Tokens[12], tok::star, TT_BinaryOperator);
+
+  Tokens = annotate("std::vector<Foo> operator()(Foo &foo);");
+  ASSERT_EQ(Tokens.size(), 16u) << Tokens;
+  EXPECT_TOKEN(Tokens[3], tok::less, TT_TemplateOpener);
+  EXPECT_TOKEN(Tokens[5], tok::greater, TT_TemplateCloser);
+  EXPECT_TOKEN(Tokens[6], tok::kw_operator, TT_FunctionDeclarationName);
+  EXPECT_TOKEN(Tokens[7], tok::l_paren, TT_OverloadedOperator);
+  EXPECT_TOKEN(Tokens[8], tok::r_paren, TT_OverloadedOperator);
+  EXPECT_TOKEN(Tokens[9], tok::l_paren, TT_OverloadedOperatorLParen);
+  EXPECT_TOKEN(Tokens[11], tok::amp, TT_PointerOrReference);
 }
 
 TEST_F(TokenAnnotatorTest, OverloadedOperatorInTemplate) {