clang-tools  14.0.0git
SignedCharMisuseCheck.h
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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 
14 namespace clang {
15 namespace tidy {
16 namespace bugprone {
17 
18 /// Finds those ``signed char`` -> integer conversions which might indicate a
19 /// programming error. The basic problem with the ``signed char``, that it might
20 /// store the non-ASCII characters as negative values. This behavior can cause a
21 /// misunderstanding of the written code both when an explicit and when an
22 /// implicit conversion happens.
23 ///
24 /// For the user-facing documentation see:
25 /// http://clang.llvm.org/extra/clang-tidy/checks/bugprone-signed-char-misuse.html
27 public:
28  SignedCharMisuseCheck(StringRef Name, ClangTidyContext *Context);
29 
30  void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
31  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
32  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
33 
34 private:
35  ast_matchers::internal::BindableMatcher<clang::Stmt> charCastExpression(
36  bool IsSigned,
37  const ast_matchers::internal::Matcher<clang::QualType> &IntegerType,
38  const std::string &CastBindName) const;
39 
40  const std::string CharTypdefsToIgnoreList;
41  const bool DiagnoseSignedUnsignedCharComparisons;
42 };
43 
44 } // namespace bugprone
45 } // namespace tidy
46 } // namespace clang
47 
48 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_SIGNEDCHARMISUSECHECK_H
clang::tidy::ClangTidyOptions::OptionMap
llvm::StringMap< ClangTidyValue > OptionMap
Definition: ClangTidyOptions.h:115
clang::tidy::ClangTidyCheck
Base class for all clang-tidy checks.
Definition: ClangTidyCheck.h:54
clang::tidy::bugprone::SignedCharMisuseCheck::storeOptions
void storeOptions(ClangTidyOptions::OptionMap &Opts) override
Should store all options supported by this check with their current values or default values for opti...
Definition: SignedCharMisuseCheck.cpp:36
clang::tidy::bugprone::SignedCharMisuseCheck::SignedCharMisuseCheck
SignedCharMisuseCheck(StringRef Name, ClangTidyContext *Context)
Definition: SignedCharMisuseCheck.cpp:29
clang::tidy::bugprone::SignedCharMisuseCheck
Finds those signed char -> integer conversions which might indicate a programming error.
Definition: SignedCharMisuseCheck.h:26
clang::tidy::bugprone::SignedCharMisuseCheck::registerMatchers
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.
Definition: SignedCharMisuseCheck.cpp:77
clang::tidy::ClangTidyContext
Every ClangTidyCheck reports errors through a DiagnosticsEngine provided by this context.
Definition: ClangTidyDiagnosticConsumer.h:72
Name
static constexpr llvm::StringLiteral Name
Definition: UppercaseLiteralSuffixCheck.cpp:28
clang::tidy::bugprone::SignedCharMisuseCheck::check
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
Definition: SignedCharMisuseCheck.cpp:130
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ApplyReplacements.h:27