[clang] [clang][ASTMatcher] Add matchers for CXXFoldExpr (PR #71245)

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:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

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``````````bash
git-clang-format --diff 9b2246d9fad9fe62be26d22e184f241304779551 bd26678cd8a444aac6c7362df7eadedbb614b7fe -- clang/include/clang/ASTMatchers/ASTMatchers.h clang/lib/ASTMatchers/ASTMatchersInternal.cpp clang/lib/ASTMatchers/Dynamic/Registry.cpp clang/unittests/AST/ASTImporterTest.cpp clang/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp clang/unittests/ASTMatchers/ASTMatchersNodeTest.cpp clang/unittests/ASTMatchers/ASTMatchersTraversalTest.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/include/clang/ASTMatchers/ASTMatchers.h b/clang/include/clang/ASTMatchers/ASTMatchers.h
index 4e67faa155f0..2cd50dbf3a55 100644
--- a/clang/include/clang/ASTMatchers/ASTMatchers.h
+++ b/clang/include/clang/ASTMatchers/ASTMatchers.h
@@ -4704,7 +4704,7 @@ AST_MATCHER_P(CXXFoldExpr, hasOperator, BinaryOperatorKind, Op) {
 ///   int x{y}.
 /// \endcode
 AST_MATCHER_P2(InitListExpr, hasInit, unsigned, N,
-                        ast_matchers::internal::Matcher<Expr>, InnerMatcher) {
+               ast_matchers::internal::Matcher<Expr>, InnerMatcher) {
   return N < Node.getNumInits() &&
           InnerMatcher.matches(*Node.getInit(N), Finder, Builder);
 }
diff --git a/clang/unittests/AST/ASTImporterTest.cpp b/clang/unittests/AST/ASTImporterTest.cpp
index a312ffa7070d..b150ba665fa4 100644
--- a/clang/unittests/AST/ASTImporterTest.cpp
+++ b/clang/unittests/AST/ASTImporterTest.cpp
@@ -804,11 +804,12 @@ TEST_P(ImportExpr, ImportSizeOfPackExpr) {
 }
 
 TEST_P(ImportExpr, ImportCXXFoldExpr) {
-  auto Match1 =
-      cxxFoldExpr(hasOperator(BO_Add), isLeftFold(), unless(hasFoldInit(expr())));
-  auto Match2 = cxxFoldExpr(hasOperator(BO_Sub), isLeftFold(), hasFoldInit(expr()));
-  auto Match3 =
-      cxxFoldExpr(hasOperator(BO_Mul), isRightFold(), unless(hasFoldInit(expr())));
+  auto Match1 = cxxFoldExpr(hasOperator(BO_Add), isLeftFold(),
+                            unless(hasFoldInit(expr())));
+  auto Match2 =
+      cxxFoldExpr(hasOperator(BO_Sub), isLeftFold(), hasFoldInit(expr()));
+  auto Match3 = cxxFoldExpr(hasOperator(BO_Mul), isRightFold(),
+                            unless(hasFoldInit(expr())));
   auto Match4 =
       cxxFoldExpr(hasOperator(BO_Div), isRightFold(), hasFoldInit(expr()));
 

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https://github.com/llvm/llvm-project/pull/71245