76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <cassert>
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#include "plugin.hxx"
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// Warn about unnamed namespaces nested (directly) within unnamed namespaces. (It can be hard to
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// keep track whether a certain spot in a source file is already in an unnamed namespace, so it
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// happens that additions to the source add redundant, nested unnamed namespaces.)
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namespace
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{
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class NestedUnnamed : public RecursiveASTVisitor<NestedUnnamed>, public loplugin::Plugin
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{
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public:
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explicit NestedUnnamed(loplugin::InstantiationData const& data)
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: Plugin(data)
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{
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}
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void run() override
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{
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if (compiler.getLangOpts().CPlusPlus)
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{
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TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
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}
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}
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bool VisitNamespaceDecl(NamespaceDecl const* decl)
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{
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if (ignoreLocation(decl))
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{
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return true;
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}
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if (!decl->isAnonymousNamespace())
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{
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return true;
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}
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NamespaceDecl const* outer;
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for (auto p = decl->getLexicalParent();; p = p->getLexicalParent())
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{
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outer = dyn_cast<NamespaceDecl>(p);
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if (outer != nullptr)
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{
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break;
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}
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if (isa<TranslationUnitDecl>(p))
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{
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return true;
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}
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}
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if (!outer->isAnonymousNamespace())
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{
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return true;
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}
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report(DiagnosticsEngine::Warning, "unnamed namespace directly nested in unnamed namespace",
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decl->getLocation())
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<< decl->getSourceRange();
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report(DiagnosticsEngine::Note, "outer namespace declared here", outer->getLocation())
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<< outer->getSourceRange();
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return true;
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}
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};
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loplugin::Plugin::Registration<NestedUnnamed> X("nestedunnamed");
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
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