1 //===--- ElseAfterReturnCheck.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_READABILITY_ELSEAFTERRETURNCHECK_H 10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_ELSEAFTERRETURNCHECK_H 11 12 #include "../ClangTidyCheck.h" 13 #include "llvm/ADT/DenseMap.h" 14 15 namespace clang::tidy::readability { 16 17 /// Flags the usages of `else` after `return`. 18 /// 19 /// http://llvm.org/docs/CodingStandards.html#don-t-use-else-after-a-return 20 class ElseAfterReturnCheck : public ClangTidyCheck { 21 public: 22 ElseAfterReturnCheck(StringRef Name, ClangTidyContext *Context); 23 24 void storeOptions(ClangTidyOptions::OptionMap &Opts) override; 25 void registerPPCallbacks(const SourceManager &SM, Preprocessor *PP, 26 Preprocessor *ModuleExpanderPP) override; 27 void registerMatchers(ast_matchers::MatchFinder *Finder) override; 28 void check(const ast_matchers::MatchFinder::MatchResult &Result) override; getCheckTraversalKind()29 std::optional<TraversalKind> getCheckTraversalKind() const override { 30 return TK_IgnoreUnlessSpelledInSource; 31 } 32 33 using ConditionalBranchMap = 34 llvm::DenseMap<FileID, SmallVector<SourceRange, 1>>; 35 36 private: 37 const bool WarnOnUnfixable; 38 const bool WarnOnConditionVariables; 39 ConditionalBranchMap PPConditionals; 40 }; 41 42 } // namespace clang::tidy::readability 43 44 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_ELSEAFTERRETURNCHECK_H 45