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45 lines
1.8 KiB
45 lines
1.8 KiB
//===--- SignedCharMisuseCheck.h - clang-tidy -------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_SIGNEDCHARMISUSECHECK_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_SIGNEDCHARMISUSECHECK_H
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#include "../ClangTidyCheck.h"
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namespace clang {
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namespace tidy {
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namespace bugprone {
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/// Finds ``signed char`` -> integer conversions which might indicate a programming
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/// error. The basic problem with the ``signed char``, that it might store the
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/// non-ASCII characters as negative values. The human programmer probably
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/// expects that after an integer conversion the converted value matches with the
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/// character code (a value from [0..255]), however, the actual value is in
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/// [-128..127] interval. This also applies to the plain ``char`` type on
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/// those implementations which represent ``char`` similar to ``signed char``.
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///
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/// For the user-facing documentation see:
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/// http://clang.llvm.org/extra/clang-tidy/checks/bugprone-signed-char-misuse.html
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class SignedCharMisuseCheck : public ClangTidyCheck {
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public:
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SignedCharMisuseCheck(StringRef Name, ClangTidyContext *Context);
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void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
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void registerMatchers(ast_matchers::MatchFinder *Finder) override;
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void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
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private:
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const std::string CharTypdefsToIgnoreList;
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};
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} // namespace bugprone
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} // namespace tidy
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} // namespace clang
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#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_SIGNEDCHARMISUSECHECK_H
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