text: //===--- ReplaceAutoPtrCheck.h - clang-tidy----------------------*- C++ -*-===//
  //
  // 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
  //
  //===----------------------------------------------------------------------===//
  
  #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REPLACE_AUTO_PTR_H
  #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REPLACE_AUTO_PTR_H
  
  #include "../ClangTidyCheck.h"
  #include "../utils/IncludeInserter.h"
  
  namespace clang {
  namespace tidy {
  namespace modernize {
  
  /// Transforms the deprecated `std::auto_ptr` into the C++11 `std::unique_ptr`.
  ///
  /// Note that both the `std::auto_ptr` type and the transfer of ownership are
  /// transformed. `std::auto_ptr` provides two ways to transfer the ownership,
  /// the copy-constructor and the assignment operator. Unlike most classes these
  /// operations do not 'copy' the resource but they 'steal' it.
  /// `std::unique_ptr` uses move semantics instead, which makes the intent of
  /// transferring the resource explicit. This difference between the two smart
  /// pointers requeres to wrap the copy-ctor and assign-operator with
  /// `std::move()`.
  ///
  /// For example, given:
  ///
  /// \code
  ///   std::auto_ptr<int> i, j;
  ///   i = j;
  /// \endcode
  ///
  /// This code is transformed to:
  ///
  /// \code
  ///   std::unique_ptr<in> i, j;
  ///   i = std::move(j);
  /// \endcode
  class ReplaceAutoPtrCheck : public ClangTidyCheck {
  public:
    ReplaceAutoPtrCheck(StringRef Name, ClangTidyContext *Context);
    void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
    void registerMatchers(ast_matchers::MatchFinder *Finder) override;
    void registerPPCallbacks(const SourceManager &SM, Preprocessor *PP,
                             Preprocessor *ModuleExpanderPP) override;
    void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
  
  private:
    std::unique_ptr<utils::IncludeInserter> Inserter;
    const utils::IncludeSorter::IncludeStyle IncludeStyle;
  };
  
  } // namespace modernize
  } // namespace tidy
  } // namespace clang
  
  #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REPLACE_AUTO_PTR_H
  