/* -*- 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/.
*/
#ifndef LO_CLANG_SHARED_PLUGINS
#include <string>
#include"compat.hxx" #include"plugin.hxx"
// Having an extern prototype for a method in a module and not actually declaring that method is dodgy. //
namespace {
class ExternAndNotDefined: public loplugin::FilteringPlugin<ExternAndNotDefined>
{ public: explicit ExternAndNotDefined(loplugin::InstantiationData const & data): FilteringPlugin(data) {}
bool ExternAndNotDefined::VisitFunctionDecl(const FunctionDecl * functionDecl) { if (ignoreLocation(functionDecl)) { returntrue;
} if (functionDecl->isDefined() || compat::isPureVirtual(functionDecl)
|| (functionDecl->getLinkageAndVisibility().getLinkage()
!= compat::Linkage::External)) { returntrue;
} //TODO, filtering out anything template for now: if (functionDecl->isDependentContext()) { returntrue;
}
CXXRecordDecl const * r = dyn_cast<CXXRecordDecl>(functionDecl->getDeclContext()); if (r != nullptr && r->getTemplateSpecializationKind() != TSK_Undeclared) { returntrue;
} // this is the bison/flex C API, it has to be defined this way
std::string functionName = functionDecl->getNameAsString(); if (functionName == "yyerror" || functionName == "yyparse" || functionName == "yylex") { returntrue;
} // see vcl/unx/gtk/app/gtksys.cxx, typename conflicts prevent using the right include if (functionName == "gdk_x11_screen_get_screen_number") { returntrue;
} if (!compiler.getSourceManager().isInMainFile(functionDecl->getLocation()))
{ returntrue;
}
report(
DiagnosticsEngine::Warning, "extern prototype in main file without definition",
functionDecl->getLocation())
<< functionDecl->getSourceRange(); returntrue;
}
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