1 //===--- UnnamedNamespaceInHeaderCheck.h - clang-tidy -----------*- C++ -*-===//
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 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_GOOGLE_UNNAMEDNAMESPACEINHEADERCHECK_H
10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_GOOGLE_UNNAMEDNAMESPACEINHEADERCHECK_H
11 
12 #include "../ClangTidyCheck.h"
13 #include "../utils/FileExtensionsUtils.h"
14 
15 namespace clang {
16 namespace tidy {
17 namespace google {
18 namespace build {
19 
20 /// Finds anonymous namespaces in headers.
21 ///
22 /// The check supports these options:
23 ///   - `HeaderFileExtensions`: a semicolon-separated list of filename
24 ///     extensions of header files (The filename extensions should not contain
25 ///     "." prefix). ";h;hh;hpp;hxx" by default.
26 ///
27 ///     For extension-less header files, using an empty string or leaving an
28 ///     empty string between ";" if there are other filename extensions.
29 ///
30 /// https://google.github.io/styleguide/cppguide.html#Namespaces
31 ///
32 /// Corresponding cpplint.py check name: 'build/namespaces'.
33 ///
34 /// For the user-facing documentation see:
35 /// http://clang.llvm.org/extra/clang-tidy/checks/google-build-namespaces.html
36 class UnnamedNamespaceInHeaderCheck : public ClangTidyCheck {
37 public:
38   UnnamedNamespaceInHeaderCheck(StringRef Name, ClangTidyContext *Context);
isLanguageVersionSupported(const LangOptions & LangOpts)39   bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
40     return LangOpts.CPlusPlus;
41   }
42   void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
43   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
44   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
45 
46 private:
47   const std::string RawStringHeaderFileExtensions;
48   utils::FileExtensionsSet HeaderFileExtensions;
49 };
50 
51 } // namespace build
52 } // namespace google
53 } // namespace tidy
54 } // namespace clang
55 
56 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_GOOGLE_UNNAMEDNAMESPACEINHEADERCHECK_H
57