1 //===--- AvoidNSErrorInitCheck.cpp - clang-tidy----------------------------===// 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 #include "AvoidNSErrorInitCheck.h" 10 #include "clang/AST/ASTContext.h" 11 #include "clang/ASTMatchers/ASTMatchFinder.h" 12 13 using namespace clang::ast_matchers; 14 15 namespace clang::tidy::objc { 16 registerMatchers(MatchFinder * Finder)17void AvoidNSErrorInitCheck::registerMatchers(MatchFinder *Finder) { 18 Finder->addMatcher(objcMessageExpr(hasSelector("init"), 19 hasReceiverType(asString("NSError *"))) 20 .bind("nserrorInit"), 21 this); 22 } 23 check(const MatchFinder::MatchResult & Result)24void AvoidNSErrorInitCheck::check(const MatchFinder::MatchResult &Result) { 25 const auto *MatchedExpr = 26 Result.Nodes.getNodeAs<ObjCMessageExpr>("nserrorInit"); 27 diag(MatchedExpr->getBeginLoc(), 28 "use errorWithDomain:code:userInfo: or initWithDomain:code:userInfo: to " 29 "create a new NSError"); 30 } 31 32 } // namespace clang::tidy::objc 33