Revert "[clang-format] Correctly format variable templates."

This reverts commit a140b7104fdae0d9eff5b18efbc784754e0ca274.

It provoked the bug https://github.com/llvm/llvm-project/issues/54374.

3 files changed, 1 insertions, 54 deletions

diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index 6cf3681cdd9d..0c760b5b2811 100644
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -1526,30 +1526,8 @@ private:
       if (Current.getPrecedence() != prec::Assignment)
         return false;
 
-      if (Line.First->isOneOf(tok::kw_using, tok::kw_return))
+      if (Line.First->isOneOf(tok::kw_template, tok::kw_using, tok::kw_return))
         return false;
-      if (Line.First->is(tok::kw_template)) {
-        // `template` keyword can start a variable template.
-        const FormatToken *Tok = Line.First->getNextNonComment();
-        assert(Tok); // Current token is on the same line.
-        if (Tok->isNot(TT_TemplateOpener)) {
-          // Explicit template instantiations do not have `<>`.
-          return false;
-        }
-
-        Tok = Tok->MatchingParen;
-        if (!Tok)
-          return false;
-        Tok = Tok->getNextNonComment();
-        if (!Tok)
-          return false;
-
-        if (Tok->isOneOf(tok::kw_class, tok::kw_enum, tok::kw_concept,
-                         tok::kw_struct, tok::kw_using))
-          return false;
-
-        return true;
-      }
 
       // Type aliases use `type X = ...;` in TypeScript and can be exported
       // using `export type ...`.
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index aadd24a0d6ca..05427c624974 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -25625,12 +25625,6 @@ TEST_F(FormatTest, AlignArrayOfStructuresRightAlignmentNonSquare) {
                Style);
 }
 
-TEST_F(FormatTest, FormatsVariableTemplates) {
-  verifyFormat("inline bool var = is_integral_v<int> && is_signed_v<int>;");
-  verifyFormat("template <typename T> "
-               "inline bool var = is_integral_v<T> && is_signed_v<T>;");
-}
-
 } // namespace
 } // namespace format
 } // namespace clang
diff --git a/clang/unittests/Format/TokenAnnotatorTest.cpp b/clang/unittests/Format/TokenAnnotatorTest.cpp
index dd868be99f45..dff8c0466260 100644
--- a/clang/unittests/Format/TokenAnnotatorTest.cpp
+++ b/clang/unittests/Format/TokenAnnotatorTest.cpp
@@ -117,31 +117,6 @@ TEST_F(TokenAnnotatorTest, UnderstandsEnums) {
   EXPECT_TOKEN(Tokens[2], tok::l_brace, TT_EnumLBrace);
 }
 
-TEST_F(TokenAnnotatorTest, UnderstandsDefaultedAndDeletedFunctions) {
-  auto Tokens = annotate("auto operator<=>(const T &) const & = default;");
-  EXPECT_EQ(Tokens.size(), 14u) << Tokens;
-  EXPECT_TOKEN(Tokens[9], tok::amp, TT_PointerOrReference);
-
-  Tokens = annotate("template <typename T> void F(T) && = delete;");
-  EXPECT_EQ(Tokens.size(), 15u) << Tokens;
-  EXPECT_TOKEN(Tokens[10], tok::ampamp, TT_PointerOrReference);
-}
-
-TEST_F(TokenAnnotatorTest, UnderstandsVariables) {
-  auto Tokens =
-      annotate("inline bool var = is_integral_v<int> && is_signed_v<int>;");
-  EXPECT_EQ(Tokens.size(), 15u) << Tokens;
-  EXPECT_TOKEN(Tokens[8], tok::ampamp, TT_BinaryOperator);
-}
-
-TEST_F(TokenAnnotatorTest, UnderstandsVariableTemplates) {
-  auto Tokens =
-      annotate("template <typename T> "
-               "inline bool var = is_integral_v<int> && is_signed_v<int>;");
-  EXPECT_EQ(Tokens.size(), 20u) << Tokens;
-  EXPECT_TOKEN(Tokens[13], tok::ampamp, TT_BinaryOperator);
-}
-
 TEST_F(TokenAnnotatorTest, UnderstandsLBracesInMacroDefinition) {
   auto Tokens = annotate("#define BEGIN NS {");
   EXPECT_EQ(Tokens.size(), 6u) << Tokens;