948c9c0a31
...of measuring loplugin performance, when gathering data with perf and all plugins that used "Visitor" as class name were lumped together. (Cf. <https://whatofhow.wordpress.com/2016/06/28/plugin-flamed/>.) Change-Id: Ie482f443faced7469528da4772e735bc2eda596d Reviewed-on: https://gerrit.libreoffice.org/43324 Reviewed-by: Stephan Bergmann <sbergman@redhat.com> Tested-by: Stephan Bergmann <sbergman@redhat.com>
80 lines
2.9 KiB
C++
80 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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 "plugin.hxx"
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namespace {
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class DllPrivate final:
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public RecursiveASTVisitor<DllPrivate>, public loplugin::Plugin
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{
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public:
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explicit DllPrivate(InstantiationData const & data): Plugin(data) {}
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bool VisitNamedDecl(NamedDecl const * decl) {
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if (!decl->getLocation().isInvalid()&&ignoreLocation(decl)) {
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return true;
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}
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auto a = decl->getAttr<VisibilityAttr>();
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if (a == nullptr || a->getVisibility() != VisibilityAttr::Hidden) {
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return true;
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}
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if (compiler.getSourceManager().isMacroBodyExpansion(
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decl->getLocation())
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&& (Lexer::getImmediateMacroName(
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decl->getLocation(), compiler.getSourceManager(),
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compiler.getLangOpts())
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== "Q_OBJECT")) // from /usr/include/QtCore/qobjectdefs.h
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{
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return true;
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}
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auto p = dyn_cast<RecordDecl>(decl->getDeclContext());
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if (p == nullptr) {
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report(
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DiagnosticsEngine::Warning,
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"top-level declaration redundantly marked as DLLPRIVATE",
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a->getLocation())
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<< decl->getSourceRange();
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} else if (p->getVisibility() == HiddenVisibility) {
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report(
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DiagnosticsEngine::Warning,
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("declaration nested in DLLPRIVATE declaration redundantly"
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" marked as DLLPRIVATE"),
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a->getLocation())
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<< decl->getSourceRange();
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report(
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DiagnosticsEngine::Note, "parent declaration is here",
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p->getLocation())
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<< p->getSourceRange();
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}
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return true;
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}
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private:
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void run() override {
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// DISABLE_DYNLOADING makes SAL_DLLPUBLIC_{EXPORT,IMPORT,TEMPLATE} expand
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// to visibility("hidden") attributes, which would cause bogus warnings
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// here (e.g., in UBSan builds that explicitly define DISABLE_DYNLOADING
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// in jurt/source/pipe/staticsalhack.cxx); alternatively, change
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// include/sal/types.h to make those SAL_DLLPUBLIC_* expand to nothing
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// for DISABLE_DYNLOADING:
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if (!compiler.getPreprocessor().getIdentifierInfo("DISABLE_DYNLOADING")
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->hasMacroDefinition())
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{
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TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
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}
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}
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};
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static loplugin::Plugin::Registration<DllPrivate> reg("dllprivate");
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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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