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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"
namespace {
class DerivedClass:
public loplugin::FilteringPlugin<DerivedClass>
{
public:
explicit DerivedClass(InstantiationData const & data):
FilteringPlugin(data) {}
virtual void run() override
{ TraverseDecl(compiler.getASTContext().getTranslationUnitDecl()); }
bool VisitCXXRecordDecl(CXXRecordDecl const * decl);
};
bool BaseCheck(const CXXRecordDecl *BaseDefinition, void *BaseClassName) {
// print warning about deriving from this classes
// the name has to contain namespace, e.g. foo::bar::ClassName
const char *BaseClasses[] = {
"Dialog",
"ProgressBar",
"SfxToolBoxControl",
"StatusBar",
0,
};
for (int i = 0; BaseClasses[i]; i++)
if (BaseDefinition->getQualifiedNameAsString().compare(BaseClasses[i]) == 0) {
*(const char **)BaseClassName = BaseClasses[i];
return false;
}
return true;
}
bool DerivedClass::VisitCXXRecordDecl(CXXRecordDecl const * decl) {
const char *BaseClassName = 0;
// checking for decl->hasDefinition() avoids crash in decl->forallBases
if (decl->hasDefinition() &&
// not sure what hasAnyDependentBases() does,
// but it avoids classes we don't want, e.g. WeakAggComponentImplHelper1
!decl->hasAnyDependentBases() &&
!decl->forallBases(BaseCheck, &BaseClassName)) {
string warning_msg("class %0 derives from ");
// no idea how BaseClassName can be 0 sometimes...
if (BaseClassName)
warning_msg += BaseClassName;
report(
DiagnosticsEngine::Warning,
warning_msg,
decl->getLocStart())
<< decl->getQualifiedNameAsString() << decl->getSourceRange();
}
return true;
}
loplugin::Plugin::Registration<DerivedClass> X("derivedclass");
}
/* vim:set shiftwidth=4 softtabstop=4 tabstop=4 expandtab: */
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