forked from OSchip/llvm-project
47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
//===--- UsingNamespaceDirectiveCheck.cpp - clang-tidy ----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "UsingNamespaceDirectiveCheck.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/ASTMatchers/ASTMatchFinder.h"
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#include "clang/ASTMatchers/ASTMatchers.h"
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using namespace clang::ast_matchers;
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namespace clang {
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namespace tidy {
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namespace google {
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namespace build {
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void UsingNamespaceDirectiveCheck::registerMatchers(
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ast_matchers::MatchFinder *Finder) {
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// Only register the matchers for C++; the functionality currently does not
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// provide any benefit to other languages, despite being benign.
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if (getLangOpts().CPlusPlus)
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Finder->addMatcher(usingDirectiveDecl().bind("usingNamespace"), this);
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}
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void UsingNamespaceDirectiveCheck::check(
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const MatchFinder::MatchResult &Result) {
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const auto *U = Result.Nodes.getNodeAs<UsingDirectiveDecl>("usingNamespace");
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SourceLocation Loc = U->getLocStart();
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if (U->isImplicit() || !Loc.isValid())
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return;
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diag(Loc, "do not use namespace using-directives; "
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"use using-declarations instead");
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// TODO: We could suggest a list of using directives replacing the using
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// namespace directive.
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}
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} // namespace build
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} // namespace google
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} // namespace tidy
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} // namespace clang
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