Yi Kong | 878f994 | 2023-12-13 12:55:04 +0900 | [diff] [blame^] | 1 | //===--- UseTrailingReturnTypeCheck.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_MODERNIZE_USETRAILINGRETURNTYPECHECK_H |
| 10 | #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_USETRAILINGRETURNTYPECHECK_H |
| 11 | |
| 12 | #include "../ClangTidyCheck.h" |
| 13 | #include "clang/Lex/Token.h" |
| 14 | #include <optional> |
| 15 | |
| 16 | namespace clang::tidy::modernize { |
| 17 | |
| 18 | struct ClassifiedToken { |
| 19 | Token T; |
| 20 | bool IsQualifier; |
| 21 | bool IsSpecifier; |
| 22 | }; |
| 23 | |
| 24 | /// Rewrites function signatures to use a trailing return type. |
| 25 | /// |
| 26 | /// For the user-facing documentation see: |
| 27 | /// http://clang.llvm.org/extra/clang-tidy/checks/modernize/use-trailing-return-type.html |
| 28 | class UseTrailingReturnTypeCheck : public ClangTidyCheck { |
| 29 | public: |
| 30 | UseTrailingReturnTypeCheck(StringRef Name, ClangTidyContext *Context) |
| 31 | : ClangTidyCheck(Name, Context) {} |
| 32 | bool isLanguageVersionSupported(const LangOptions &LangOpts) const override { |
| 33 | return LangOpts.CPlusPlus11; |
| 34 | } |
| 35 | void registerMatchers(ast_matchers::MatchFinder *Finder) override; |
| 36 | void registerPPCallbacks(const SourceManager &SM, Preprocessor *PP, |
| 37 | Preprocessor *ModuleExpanderPP) override; |
| 38 | void check(const ast_matchers::MatchFinder::MatchResult &Result) override; |
| 39 | |
| 40 | private: |
| 41 | Preprocessor *PP = nullptr; |
| 42 | |
| 43 | SourceLocation findTrailingReturnTypeSourceLocation( |
| 44 | const FunctionDecl &F, const FunctionTypeLoc &FTL, const ASTContext &Ctx, |
| 45 | const SourceManager &SM, const LangOptions &LangOpts); |
| 46 | std::optional<SmallVector<ClassifiedToken, 8>> |
| 47 | classifyTokensBeforeFunctionName(const FunctionDecl &F, const ASTContext &Ctx, |
| 48 | const SourceManager &SM, |
| 49 | const LangOptions &LangOpts); |
| 50 | SourceRange findReturnTypeAndCVSourceRange(const FunctionDecl &F, |
| 51 | const TypeLoc &ReturnLoc, |
| 52 | const ASTContext &Ctx, |
| 53 | const SourceManager &SM, |
| 54 | const LangOptions &LangOpts); |
| 55 | void keepSpecifiers(std::string &ReturnType, std::string &Auto, |
| 56 | SourceRange ReturnTypeCVRange, const FunctionDecl &F, |
| 57 | const FriendDecl *Fr, const ASTContext &Ctx, |
| 58 | const SourceManager &SM, const LangOptions &LangOpts); |
| 59 | }; |
| 60 | |
| 61 | } // namespace clang::tidy::modernize |
| 62 | |
| 63 | #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_USETRAILINGRETURNTYPECHECK_H |