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