================ @@ -0,0 +1,97 @@ +//===----------------------------------------------------------------------===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +#include "UseBulkInsertCheck.h" +#include "clang/ASTMatchers/ASTMatchFinder.h" +#include "clang/Lex/Lexer.h" + +using namespace clang::ast_matchers; + +namespace clang::tidy::misc { + +void UseBulkInsertCheck::registerMatchers(MatchFinder *Finder) { + Finder->addMatcher( + cxxForRangeStmt( + hasLoopVariable(varDecl().bind("loop_var")), + hasRangeInit(expr().bind("range")), + hasBody(compoundStmt( + statementCountIs(1), + hasAnySubstatement(cxxMemberCallExpr( + callee(memberExpr( + ofClass(cxxRecordDecl(hasAnyName( + "::std::set", "::std::map", "::std::multiset", + "::std::multimap", "::std::unordered_set", + "::std::unordered_map", + "::std::unordered_multiset", + "::std::unordered_multimap"))))), + argumentCountIs(1), + hasArgument( + 0, ignoringParenImpCasts( + declRefExpr(to(varDecl().bind("insert_arg")))))) + .bind("insert_call"))))) + .bind("for_range"), + this); +} + +void UseBulkInsertCheck::check( + const MatchFinder::MatchResult &Result) { + const auto *Loop = + Result.Nodes.getNodeAs<CXXForRangeStmt>("for_range"); + const auto *LoopVar = + Result.Nodes.getNodeAs<VarDecl>("loop_var"); + const auto *InsertArg = + Result.Nodes.getNodeAs<VarDecl>("insert_arg"); + const auto *Range = + Result.Nodes.getNodeAs<Expr>("range"); + const auto *InsertCall = + Result.Nodes.getNodeAs<CXXMemberCallExpr>("insert_call"); + + if (!Loop || !LoopVar || !InsertArg || !Range || !InsertCall) + return; + + if (LoopVar != InsertArg) + return; + + const auto *Member = dyn_cast<MemberExpr>(InsertCall->getCallee()); + if (!Member) + return; + + const Expr *Object = Member->getBase(); + if (!Object) + return; + + const SourceManager &SM = *Result.SourceManager; + const LangOptions &LangOpts = Result.Context->getLangOpts(); + + StringRef ObjectText = Lexer::getSourceText( + CharSourceRange::getTokenRange(Object->getSourceRange()), SM, + LangOpts); + + StringRef RangeText = Lexer::getSourceText( + CharSourceRange::getTokenRange(Range->getSourceRange()), SM, + LangOpts); + + if (ObjectText.empty() || RangeText.empty()) + return; + + std::string Replacement = ObjectText.str(); + Replacement += ".insert("; + Replacement += RangeText; + Replacement += ".begin(), "; + Replacement += RangeText; + Replacement += ".end());"; + + diag(Loop->getForLoc(), + "use bulk insertion instead of inserting elements one at a time") + << FixItHint::CreateReplacement( + CharSourceRange::getTokenRange(Loop->getBeginLoc(), + Loop->getEndLoc()), + Replacement); +} + +} // namespace clang::tidy::misc ---------------- ayyYoSam wrote:
done https://github.com/llvm/llvm-project/pull/226742 _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
