| //===--- SignedCharMisuseCheck.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_BUGPRONE_SIGNEDCHARMISUSECHECK_H |
| #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_SIGNEDCHARMISUSECHECK_H |
| |
| #include "../ClangTidyCheck.h" |
| |
| namespace clang { |
| namespace tidy { |
| namespace bugprone { |
| |
| /// Finds those ``signed char`` -> integer conversions which might indicate a |
| /// programming error. The basic problem with the ``signed char``, that it might |
| /// store the non-ASCII characters as negative values. This behavior can cause a |
| /// misunderstanding of the written code both when an explicit and when an |
| /// implicit conversion happens. |
| /// |
| /// For the user-facing documentation see: |
| /// http://clang.llvm.org/extra/clang-tidy/checks/bugprone-signed-char-misuse.html |
| class SignedCharMisuseCheck : public ClangTidyCheck { |
| public: |
| SignedCharMisuseCheck(StringRef Name, ClangTidyContext *Context); |
| |
| void storeOptions(ClangTidyOptions::OptionMap &Opts) override; |
| void registerMatchers(ast_matchers::MatchFinder *Finder) override; |
| void check(const ast_matchers::MatchFinder::MatchResult &Result) override; |
| |
| private: |
| ast_matchers::internal::BindableMatcher<clang::Stmt> charCastExpression( |
| bool IsSigned, |
| const ast_matchers::internal::Matcher<clang::QualType> &IntegerType, |
| const std::string &CastBindName) const; |
| |
| const std::string CharTypdefsToIgnoreList; |
| const bool DiagnoseSignedUnsignedCharComparisons; |
| }; |
| |
| } // namespace bugprone |
| } // namespace tidy |
| } // namespace clang |
| |
| #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_SIGNEDCHARMISUSECHECK_H |