[clang] [clang-format] Fix a misannotation of less/greater as angle brackets (PR #105941)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang-format

Author: Owen Pan (owenca)

<details>
<summary>Changes</summary>

Fixes #<!-- -->105877.

---
Full diff: https://github.com/llvm/llvm-project/pull/105941.diff


2 Files Affected:

- (modified) clang/lib/Format/TokenAnnotator.cpp (+1-1) 
- (modified) clang/unittests/Format/TokenAnnotatorTest.cpp (+5) 


``````````diff
diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index 0d5741ed76f7cb..a570a909313f41 100644
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -250,7 +250,7 @@ class AnnotatingParser {
         if (Precedence > prec::Conditional && Precedence < prec::Relational)
           return false;
       }
-      if (Prev.is(TT_ConditionalExpr))
+      if (Prev.isOneOf(tok::question, tok::colon) && !Style.isProto())
         SeenTernaryOperator = true;
       updateParameterCount(Left, CurrentToken);
       if (Style.Language == FormatStyle::LK_Proto) {
diff --git a/clang/unittests/Format/TokenAnnotatorTest.cpp b/clang/unittests/Format/TokenAnnotatorTest.cpp
index 99798de43e70ff..bb28b175eb5d50 100644
--- a/clang/unittests/Format/TokenAnnotatorTest.cpp
+++ b/clang/unittests/Format/TokenAnnotatorTest.cpp
@@ -620,6 +620,11 @@ TEST_F(TokenAnnotatorTest, UnderstandsNonTemplateAngleBrackets) {
   EXPECT_TOKEN(Tokens[2], tok::less, TT_BinaryOperator);
   EXPECT_TOKEN(Tokens[8], tok::greater, TT_BinaryOperator);
 
+  Tokens = annotate("return checklower ? a < b : a > b;");
+  ASSERT_EQ(Tokens.size(), 12u) << Tokens;
+  EXPECT_TOKEN(Tokens[4], tok::less, TT_BinaryOperator);
+  EXPECT_TOKEN(Tokens[8], tok::greater, TT_BinaryOperator);
+
   Tokens = annotate("return A < B ^ A > B;");
   ASSERT_EQ(Tokens.size(), 10u) << Tokens;
   EXPECT_TOKEN(Tokens[2], tok::less, TT_BinaryOperator);

``````````

</details>


https://github.com/llvm/llvm-project/pull/105941