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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* 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/.
*/
#include "plugin.hxx"
// Find function declarations that redundantly re-specify a visibility attribute
// (via SAL_DLLPUBLIC_EXPORT etc.) that was already specified with a previous
// declaration of that function. But MSVC wants consistency of __declspec
// across friend declarations, so just ignore those for now.
namespace {
bool hasExplicitVisibilityAttr(Decl const * decl) {
VisibilityAttr const * attr = decl->getAttr<VisibilityAttr>();
return attr != nullptr && !attr->isInherited();
}
bool isFriendDecl(Decl const * decl) {
return decl->getFriendObjectKind() != Decl::FOK_None;
}
class ReVisibility:
public RecursiveASTVisitor<ReVisibility>, public loplugin::Plugin
{
public:
explicit ReVisibility(InstantiationData const & data): Plugin(data) {}
void run() override
{ TraverseDecl(compiler.getASTContext().getTranslationUnitDecl()); }
bool VisitFunctionDecl(FunctionDecl const * decl);
};
bool ReVisibility::VisitFunctionDecl(FunctionDecl const * decl) {
if (!ignoreLocation(decl) && hasExplicitVisibilityAttr(decl)
&& !isFriendDecl(decl))
{
for (Decl const * p = decl;;) {
p = p->getPreviousDecl();
if (p == nullptr) {
break;
}
if (hasExplicitVisibilityAttr(p) && !isFriendDecl(p)) {
report(
DiagnosticsEngine::Warning,
"Redundant visibility re-declaration",
decl->getAttr<VisibilityAttr>()->getLocation())
<< decl->getAttr<VisibilityAttr>()->getRange();
report(
DiagnosticsEngine::Note,
"Previous visibility declaration is here",
p->getAttr<VisibilityAttr>()->getLocation())
<< p->getAttr<VisibilityAttr>()->getRange();
break;
}
}
}
return true;
}
loplugin::Plugin::Registration<ReVisibility> X("revisibility");
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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