1 //===--- DefinitionsInHeadersCheck.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_MISC_DEFINITIONS_IN_HEADERS_H
10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_DEFINITIONS_IN_HEADERS_H
11 
12 #include "../ClangTidyCheck.h"
13 #include "../utils/FileExtensionsUtils.h"
14 
15 namespace clang::tidy::misc {
16 
17 /// Finds non-extern non-inline function and variable definitions in header
18 /// files, which can lead to potential ODR violations.
19 ///
20 /// The check supports these options:
21 ///   - `UseHeaderFileExtension`: Whether to use file extension to distinguish
22 ///     header files. True by default.
23 ///
24 /// For the user-facing documentation see:
25 /// http://clang.llvm.org/extra/clang-tidy/checks/misc/definitions-in-headers.html
26 class DefinitionsInHeadersCheck : public ClangTidyCheck {
27 public:
28   DefinitionsInHeadersCheck(StringRef Name, ClangTidyContext *Context);
isLanguageVersionSupported(const LangOptions & LangOpts)29   bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
30     return LangOpts.CPlusPlus11;
31   }
32   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
33   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
34 
35 private:
36   FileExtensionsSet HeaderFileExtensions;
37 };
38 
39 } // namespace clang::tidy::misc
40 
41 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_DEFINITIONS_IN_HEADERS_H
42