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1//===----------------------------------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_CONTAINERDATAPOINTERCHECK_H10#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_CONTAINERDATAPOINTERCHECK_H11 12#include "../ClangTidyCheck.h"13 14namespace clang::tidy::readability {15/// Checks whether a call to `operator[]` and `&` can be replaced with a call to16/// `data()`.17///18/// This only replaces the case where the offset being accessed through the19/// subscript operation is a known constant 0. This avoids a potential invalid20/// memory access when the container is empty. Cases where the constant is not21/// explicitly zero can be addressed through the clang static analyzer, and22/// those which cannot be statically identified can be caught using UBSan.23class ContainerDataPointerCheck : public ClangTidyCheck {24public:25 ContainerDataPointerCheck(StringRef Name, ClangTidyContext *Context);26 27 bool isLanguageVersionSupported(const LangOptions &LO) const override {28 return LO.CPlusPlus11;29 }30 31 void storeOptions(ClangTidyOptions::OptionMap &Opts) override;32 void registerMatchers(ast_matchers::MatchFinder *Finder) override;33 34 void check(const ast_matchers::MatchFinder::MatchResult &Result) override;35 36 std::optional<TraversalKind> getCheckTraversalKind() const override {37 return TK_IgnoreUnlessSpelledInSource;38 }39 40private:41 const std::vector<StringRef> IgnoredContainers;42};43} // namespace clang::tidy::readability44 45#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_CONTAINERDATAPOINTERCHECK_H46