1 //===--- UnusedAliasDeclsCheck.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_UNUSED_ALIAS_DECLS_H
10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_UNUSED_ALIAS_DECLS_H
11 
12 #include "../ClangTidyCheck.h"
13 #include "llvm/ADT/DenseMap.h"
14 
15 namespace clang::tidy::misc {
16 
17 /// Finds unused namespace alias declarations.
18 class UnusedAliasDeclsCheck : public ClangTidyCheck {
19 public:
UnusedAliasDeclsCheck(StringRef Name,ClangTidyContext * Context)20   UnusedAliasDeclsCheck(StringRef Name, ClangTidyContext *Context)
21       : ClangTidyCheck(Name, Context) {}
isLanguageVersionSupported(const LangOptions & LangOpts)22   bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
23     return LangOpts.CPlusPlus11;
24   }
25   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
26   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
27   void onEndOfTranslationUnit() override;
28 
29 private:
30   llvm::DenseMap<const NamedDecl *, CharSourceRange> FoundDecls;
31 };
32 
33 } // namespace clang::tidy::misc
34 
35 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_UNUSED_ALIAS_DECLS_H
36