1//===--- SignedCharMisuseCheck.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_BUGPRONE_SIGNEDCHARMISUSECHECK_H
10#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_SIGNEDCHARMISUSECHECK_H
11
12#include "../ClangTidyCheck.h"
13
14namespace clang::tidy::bugprone {
15
16/// Finds those ``signed char`` -> integer conversions which might indicate a
17/// programming error. The basic problem with the ``signed char``, that it might
18/// store the non-ASCII characters as negative values. This behavior can cause a
19/// misunderstanding of the written code both when an explicit and when an
20/// implicit conversion happens.
21///
22/// For the user-facing documentation see:
23/// http://clang.llvm.org/extra/clang-tidy/checks/bugprone/signed-char-misuse.html
24class SignedCharMisuseCheck : public ClangTidyCheck {
25public:
26 SignedCharMisuseCheck(StringRef Name, ClangTidyContext *Context);
27
28 void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
29 void registerMatchers(ast_matchers::MatchFinder *Finder) override;
30 void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
31
32private:
33 ast_matchers::internal::BindableMatcher<clang::Stmt> charCastExpression(
34 bool IsSigned,
35 const ast_matchers::internal::Matcher<clang::QualType> &IntegerType,
36 const std::string &CastBindName) const;
37
38 const StringRef CharTypdefsToIgnoreList;
39 const bool DiagnoseSignedUnsignedCharComparisons;
40};
41
42} // namespace clang::tidy::bugprone
43
44#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_SIGNEDCHARMISUSECHECK_H
45

source code of clang-tools-extra/clang-tidy/bugprone/SignedCharMisuseCheck.h