| 1 | //===--- ConfusableIdentifierCheck.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_CONFUSABLE_IDENTIFIER_CHECK_H |
| 10 | #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_CONFUSABLE_IDENTIFIER_CHECK_H |
| 11 | |
| 12 | #include "../ClangTidyCheck.h" |
| 13 | #include "llvm/ADT/DenseMap.h" |
| 14 | |
| 15 | namespace clang::tidy::misc { |
| 16 | |
| 17 | /// Finds symbol which have confusable identifiers, i.e. identifiers that look |
| 18 | /// the same visually but have a different Unicode representation. |
| 19 | /// If symbols are confusable but don't live in conflicting namespaces, they are |
| 20 | /// not reported. |
| 21 | class ConfusableIdentifierCheck : public ClangTidyCheck { |
| 22 | public: |
| 23 | ConfusableIdentifierCheck(StringRef Name, ClangTidyContext *Context); |
| 24 | ~ConfusableIdentifierCheck(); |
| 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 | |
| 33 | private: |
| 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::misc |
| 43 | |
| 44 | #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_CONFUSABLE_IDENTIFIER_CHECK_H |
| 45 |