45 lines · c
1//===----------------------------------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_CONFUSABLEIDENTIFIERCHECK_H10#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_CONFUSABLEIDENTIFIERCHECK_H11 12#include "../ClangTidyCheck.h"13#include "llvm/ADT/DenseMap.h"14 15namespace clang::tidy::misc {16 17/// Finds symbol which have confusable identifiers, i.e. identifiers that look18/// the same visually but have a different Unicode representation.19/// If symbols are confusable but don't live in conflicting namespaces, they are20/// not reported.21class ConfusableIdentifierCheck : public ClangTidyCheck {22public:23 ConfusableIdentifierCheck(StringRef Name, ClangTidyContext *Context);24 ~ConfusableIdentifierCheck() override;25 26 void registerMatchers(ast_matchers::MatchFinder *Finder) override;27 void check(const ast_matchers::MatchFinder::MatchResult &Result) override;28 void onEndOfTranslationUnit() override;29 std::optional<TraversalKind> getCheckTraversalKind() const override {30 return TK_IgnoreUnlessSpelledInSource;31 }32 33private:34 void addDeclToCheck(const NamedDecl *ND, const Decl *Parent);35 36 llvm::DenseMap<37 const IdentifierInfo *,38 llvm::SmallVector<std::pair<const NamedDecl *, const Decl *>, 1>>39 NameToDecls;40};41 42} // namespace clang::tidy::misc43 44#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_CONFUSABLEIDENTIFIERCHECK_H45