[clang-format] [PR46157] Wrong spacing of negative literals with use …

…of operator Summary: see https://bugs.llvm.org/show_bug.cgi?id=46157 Reviewed By: curdeius Differential Revision: https://reviews.llvm.org/D80933
llvm · Jun 3, 2020 · 6de794e · 6de794e
1 parent 6a0484f
commit 6de794e
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Showing 2 changed files with 17 additions and 4 deletions.
diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
@@ -978,16 +978,18 @@ class AnnotatingParser {
         if (CurrentToken->isOneOf(tok::star, tok::amp))
           CurrentToken->setType(TT_PointerOrReference);
         consumeToken();
+        if (CurrentToken && CurrentToken->is(tok::comma) &&
+            CurrentToken->Previous->isNot(tok::kw_operator))
+          break;
         if (CurrentToken && CurrentToken->Previous->isOneOf(
                                 TT_BinaryOperator, TT_UnaryOperator, tok::comma,
                                 tok::star, tok::arrow, tok::amp, tok::ampamp))
           CurrentToken->Previous->setType(TT_OverloadedOperator);
       }
-      if (CurrentToken) {
+      if (CurrentToken && CurrentToken->is(tok::l_paren))
         CurrentToken->setType(TT_OverloadedOperatorLParen);
-        if (CurrentToken->Previous->is(TT_BinaryOperator))
-          CurrentToken->Previous->setType(TT_OverloadedOperator);
-      }
+      if (CurrentToken && CurrentToken->Previous->is(TT_BinaryOperator))
+        CurrentToken->Previous->setType(TT_OverloadedOperator);
       break;
     case tok::question:
       if (Tok->is(TT_CSharpNullConditionalLSquare)) {

diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
@@ -16429,6 +16429,17 @@ TEST_F(FormatTest, OperatorSpacing) {
   verifyFormat("operator&&(int(&&)(), class Foo);", Style);
 }
 
+TEST_F(FormatTest, OperatorPassedAsAFunctionPtr) {
+  FormatStyle Style = getLLVMStyle();
+  // PR46157
+  verifyFormat("foo(operator+, -42);", Style);
+  verifyFormat("foo(operator++, -42);", Style);
+  verifyFormat("foo(operator--, -42);", Style);
+  verifyFormat("foo(-42, operator--);", Style);
+  verifyFormat("foo(-42, operator, );", Style);
+  verifyFormat("foo(operator, , -42);", Style);
+}
+
 TEST_F(FormatTest, VeryLongNamespaceCommentSplit) {
   // These tests are not in NamespaceFixer because that doesn't
   // test its interaction with line wrapping