CloexecDupCheck.cpp

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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#include "CloexecDupCheck.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
 
using namespace clang::ast_matchers;
 
namespace clang::tidy::android {
 
void CloexecDupCheck::registerMatchers(MatchFinder *Finder) {
  registerMatchersImpl(Finder,
                       functionDecl(returns(isInteger()), hasName("dup"),
                                    hasParameter(0, hasType(isInteger()))));
}
 
void CloexecDupCheck::check(const MatchFinder::MatchResult &Result) {
  std::string ReplacementText =
      (Twine("fcntl(") + getSpellingArg(Result, 0) + ", F_DUPFD_CLOEXEC)")
          .str();
 
  replaceFunc(Result,
              "prefer fcntl() to dup() because fcntl() allows F_DUPFD_CLOEXEC",
              ReplacementText);
}
 
} // namespace clang::tidy::android