clang-tools-extra/clang-tidy/fuchsia/OverloadedOperatorCheck.cpp

   1 //===--- OverloadedOperatorCheck.cpp - clang-tidy--------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "OverloadedOperatorCheck.h"
  10
  11 using namespace clang::ast_matchers;
  12
  13 namespace clang::tidy::fuchsia {
  14
  15 namespace {
  16 AST_MATCHER(FunctionDecl, isFuchsiaOverloadedOperator) {
  17   if (const auto *CXXMethodNode = dyn_cast<CXXMethodDecl>(&Node)) {
  18     if (CXXMethodNode->isCopyAssignmentOperator() ||
  19         CXXMethodNode->isMoveAssignmentOperator())
  20       return false;
  21     if (CXXMethodNode->getParent()->isLambda())
  22       return false;
  23   }
  24   return Node.isOverloadedOperator();
  25 }
  26 } // namespace
  27
  28 void OverloadedOperatorCheck::registerMatchers(MatchFinder *Finder) {
  29   Finder->addMatcher(functionDecl(isFuchsiaOverloadedOperator()).bind("decl"),
  30                      this);
  31 }
  32
  33 void OverloadedOperatorCheck::check(const MatchFinder::MatchResult &Result) {
  34   const auto *D = Result.Nodes.getNodeAs<FunctionDecl>("decl");
  35   assert(D && "No FunctionDecl captured!");
  36
  37   SourceLocation Loc = D->getBeginLoc();
  38   if (Loc.isValid())
  39     diag(Loc, "overloading %0 is disallowed") << D;
  40 }
  41
  42 } // namespace clang::tidy::fuchsia