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