| //===--- ConfusableIdentifierCheck.h - clang-tidy |
| //-------------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_CONFUSABLE_IDENTIFIER_CHECK_H |
| #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_CONFUSABLE_IDENTIFIER_CHECK_H |
| |
| #include "../ClangTidyCheck.h" |
| #include <unordered_map> |
| |
| namespace clang::tidy::misc { |
| |
| /// Finds symbol which have confusable identifiers, i.e. identifiers that look |
| /// the same visually but have a different Unicode representation. |
| /// If symbols are confusable but don't live in conflicting namespaces, they are |
| /// not reported. |
| class ConfusableIdentifierCheck : public ClangTidyCheck { |
| public: |
| ConfusableIdentifierCheck(StringRef Name, ClangTidyContext *Context); |
| ~ConfusableIdentifierCheck(); |
| |
| void registerMatchers(ast_matchers::MatchFinder *Finder) override; |
| void check(const ast_matchers::MatchFinder::MatchResult &Result) override; |
| void onEndOfTranslationUnit() override; |
| std::optional<TraversalKind> getCheckTraversalKind() const override { |
| return TK_IgnoreUnlessSpelledInSource; |
| } |
| |
| struct ContextInfo { |
| const DeclContext *PrimaryContext; |
| const DeclContext *NonTransparentContext; |
| llvm::SmallVector<const DeclContext *> PrimaryContexts; |
| llvm::SmallVector<const CXXRecordDecl *> Bases; |
| }; |
| |
| private: |
| struct Entry { |
| const NamedDecl *Declaration; |
| const ContextInfo *Info; |
| }; |
| |
| const ContextInfo *getContextInfo(const DeclContext *DC); |
| |
| llvm::StringMap<llvm::SmallVector<Entry>> Mapper; |
| std::unordered_map<const DeclContext *, ContextInfo> ContextInfos; |
| }; |
| |
| } // namespace clang::tidy::misc |
| |
| #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_CONFUSABLE_IDENTIFIER_CHECK_H |