================ @@ -0,0 +1,44 @@ +//===--- UseSpanFirstLastCheck.h - clang-tidy-------------------*- C++ -*-===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_USESPANFIRSTLASTCHECK_H +#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_USESPANFIRSTLASTCHECK_H + +#include "../ClangTidyCheck.h" + +namespace clang::tidy::readability { + +/// Suggests using clearer std::span member functions first()/last() instead of +/// equivalent subspan() calls where applicable. +/// +/// For example: +/// \code +/// std::span<int> s = ...; +/// auto sub1 = s.subspan(0, n); // -> auto sub1 = s.first(n); +/// auto sub2 = s.subspan(s.size() - n); // -> auto sub2 = s.last(n); +/// auto sub3 = s.subspan(1, n); // not changed +/// auto sub4 = s.subspan(n); // not changed +/// \endcode +/// +/// The check is only active in C++20 mode. +class UseSpanFirstLastCheck : public ClangTidyCheck { +public: + UseSpanFirstLastCheck(StringRef Name, ClangTidyContext *Context) + : ClangTidyCheck(Name, Context) {} + + void registerMatchers(ast_matchers::MatchFinder *Finder) override; + void check(const ast_matchers::MatchFinder::MatchResult &Result) override; + ---------------- EugeneZelenko wrote:
Please add `isLanguageVersionSupported`. https://github.com/llvm/llvm-project/pull/118074 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
