Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/clang-tools-extra/clang-tidy/fuchsia/OverloadedOperatorCheck.cpp

@@ -0,0 +1,43 @@
+//===--- OverloadedOperatorCheck.cpp - clang-tidy--------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "OverloadedOperatorCheck.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace fuchsia {
+
+AST_MATCHER(FunctionDecl, isFuchsiaOverloadedOperator) {
+  if (const auto *CXXMethodNode = dyn_cast<CXXMethodDecl>(&Node)) {
+    if (CXXMethodNode->isCopyAssignmentOperator() ||
+        CXXMethodNode->isMoveAssignmentOperator())
+      return false;
+  }
+  return Node.isOverloadedOperator();
+}
+
+void OverloadedOperatorCheck::registerMatchers(MatchFinder *Finder) {
+  Finder->addMatcher(functionDecl(isFuchsiaOverloadedOperator()).bind("decl"),
+                     this);
+}
+
+void OverloadedOperatorCheck::check(const MatchFinder::MatchResult &Result) {
+  const auto *D = Result.Nodes.getNodeAs<FunctionDecl>("decl");
+  assert(D && "No FunctionDecl captured!");
+  
+  SourceLocation Loc = D->getLocStart();
+  if (Loc.isValid())
+    diag(Loc, "cannot overload %0") << D;
+}
+
+} // namespace fuchsia
+} // namespace tidy
+} // namespace clang