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//===--- ContainerDataPointerCheck.h - clang-tidy ---------------*- C++ -*-===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include "../ClangTidyCheck.h"
namespace clang {
namespace tidy {
namespace readability {
/// Checks whether a call to `operator[]` and `&` can be replaced with a call to
/// `data()`.
/// This only replaces the case where the offset being accessed through the
/// subscript operation is a known constant 0. This avoids a potential invalid
/// memory access when the container is empty. Cases where the constant is not
/// explicitly zero can be addressed through the clang static analyzer, and
/// those which cannot be statically identified can be caught using UBSan.
class ContainerDataPointerCheck : public ClangTidyCheck {
ContainerDataPointerCheck(StringRef Name, ClangTidyContext *Context);
bool isLanguageVersionSupported(const LangOptions &LO) const override {
return LO.CPlusPlus11;
void registerMatchers(ast_matchers::MatchFinder *Finder) override;
void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
llvm::Optional<TraversalKind> getCheckTraversalKind() const override {
return TK_IgnoreUnlessSpelledInSource;
} // namespace readability
} // namespace tidy
} // namespace clang