libcxx/test/tools/clang_tidy_checks/nodebug_on_aliases.cpp

   1 //===----------------------------------------------------------------------===//
   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 "clang-tidy/ClangTidyCheck.h"
  10
  11 #include "nodebug_on_aliases.hpp"
  12 #include "utilities.hpp"
  13
  14 namespace libcpp {
  15 namespace {
  16 AST_MATCHER(clang::NamedDecl, isPretty) { return !is_ugly_name(Node.getName()); }
  17 } // namespace
  18
  19 nodebug_on_aliases::nodebug_on_aliases(llvm::StringRef name, clang::tidy::ClangTidyContext* context)
  20     : clang::tidy::ClangTidyCheck(name, context) {}
  21
  22 void nodebug_on_aliases::registerMatchers(clang::ast_matchers::MatchFinder* finder) {
  23   using namespace clang::ast_matchers;
  24   finder->addMatcher(
  25       typeAliasDecl(unless(anyOf(isPretty(), hasAttr(clang::attr::NoDebug), hasAncestor(functionDecl()))))
  26           .bind("nodebug_on_internal_aliases"),
  27       this);
  28 }
  29
  30 void nodebug_on_aliases::check(const clang::ast_matchers::MatchFinder::MatchResult& result) {
  31   if (const auto* alias = result.Nodes.getNodeAs<clang::TypeAliasDecl>("nodebug_on_internal_aliases")) {
  32     diag(alias->getBeginLoc(), "Internal aliases should always be marked _LIBCPP_NODEBUG");
  33   }
  34 }
  35 } // namespace libcpp