clang-tools-extra/clang-tidy/misc/DefinitionsInHeadersCheck.h

//===--- DefinitionsInHeadersCheck.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_MISC_DEFINITIONS_IN_HEADERS_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_DEFINITIONS_IN_HEADERS_H

#include "../ClangTidyCheck.h"
#include "../utils/FileExtensionsUtils.h"

namespace clang::tidy::misc {

/// Finds non-extern non-inline function and variable definitions in header
/// files, which can lead to potential ODR violations.
///
/// The check supports these options:
///   - `UseHeaderFileExtension`: Whether to use file extension to distinguish
///     header files. True by default.
///
/// For the user-facing documentation see:
/// http://clang.llvm.org/extra/clang-tidy/checks/misc/definitions-in-headers.html
class DefinitionsInHeadersCheck : public ClangTidyCheck {
public:
  DefinitionsInHeadersCheck(StringRef Name, ClangTidyContext *Context);
  bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
    return LangOpts.CPlusPlus11;
  }
  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;

private:
  FileExtensionsSet HeaderFileExtensions;
};

} // namespace clang::tidy::misc

#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_DEFINITIONS_IN_HEADERS_H