clang-tools-extra/clang-tidy/android/CloexecDupCheck.cpp

   1 //===--- CloexecDupCheck.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 "CloexecDupCheck.h"
  10 #include "clang/AST/ASTContext.h"
  11 #include "clang/ASTMatchers/ASTMatchFinder.h"
  12
  13 using namespace clang::ast_matchers;
  14
  15 namespace clang::tidy::android {
  16
  17 void CloexecDupCheck::registerMatchers(MatchFinder *Finder) {
  18   registerMatchersImpl(Finder,
  19                        functionDecl(returns(isInteger()), hasName("dup"),
  20                                     hasParameter(0, hasType(isInteger()))));
  21 }
  22
  23 void CloexecDupCheck::check(const MatchFinder::MatchResult &Result) {
  24   std::string ReplacementText =
  25       (Twine("fcntl(") + getSpellingArg(Result, 0) + ", F_DUPFD_CLOEXEC)")
  26           .str();
  27
  28   replaceFunc(Result,
  29               "prefer fcntl() to dup() because fcntl() allows F_DUPFD_CLOEXEC",
  30               ReplacementText);
  31 }
  32
  33 } // namespace clang::tidy::android