1 //===--- UsingNamespaceDirectiveCheck.cpp - clang-tidy ----------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "UsingNamespaceDirectiveCheck.h" 11 #include "clang/AST/ASTContext.h" 12 #include "clang/ASTMatchers/ASTMatchFinder.h" 13 #include "clang/ASTMatchers/ASTMatchers.h" 14 15 using namespace clang::ast_matchers; 16 17 namespace clang { 18 namespace tidy { 19 namespace google { 20 namespace build { 21 22 void UsingNamespaceDirectiveCheck::registerMatchers( 23 ast_matchers::MatchFinder *Finder) { 24 Finder->addMatcher(usingDirectiveDecl().bind("usingNamespace"), this); 25 } 26 27 void 28 UsingNamespaceDirectiveCheck::check(const MatchFinder::MatchResult &Result) { 29 const auto *U = Result.Nodes.getNodeAs<UsingDirectiveDecl>("usingNamespace"); 30 SourceLocation Loc = U->getLocStart(); 31 if (U->isImplicit() || !Loc.isValid()) 32 return; 33 34 diag(Loc, "do not use namespace using-directives. Use using-declarations " 35 "instead."); 36 // TODO: We could suggest a list of using directives replacing the using 37 // namespace directive. 38 } 39 40 } // namespace build 41 } // namespace google 42 } // namespace tidy 43 } // namespace clang 44