llvm-project/clang-tools-extra/clang-tidy/performance/UnnecessaryCopyInitialization.h

//===--- UnnecessaryCopyInitialization.h - clang-tidy------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_UNNECESSARY_COPY_INITIALIZATION_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_UNNECESSARY_COPY_INITIALIZATION_H

#include "../ClangTidy.h"

namespace clang {
namespace tidy {
namespace performance {

// A check that detects const local variable declarations that are copy
// initialized with the const reference of a function call or the const
// reference of a method call whose object is guaranteed to outlive the
// variable's scope and suggests to use a const reference.
//
// The check currently only understands a subset of variables that are
// guaranteed to outlive the const reference returned, namely: const variables,
// const references, and const pointers to const.
class UnnecessaryCopyInitialization : public ClangTidyCheck {
public:
  UnnecessaryCopyInitialization(StringRef Name, ClangTidyContext *Context)
      : ClangTidyCheck(Name, Context) {}
  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
};

} // namespace performance
} // namespace tidy
} // namespace clang

#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_UNNECESSARY_COPY_INITIALIZATION_H