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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 <memory>
#include <cassert>
#include <string>
#include <iostream>
#include <fstream>
#include <set>
#include "plugin.hxx"
/**
Find calls to "delete x" where x is a field on an object.
Should rather be using std::unique_ptr
*/
namespace {
class AutoMem:
public loplugin::FilteringPlugin<AutoMem>
{
public:
explicit AutoMem(loplugin::InstantiationData const & data): FilteringPlugin(data), mbInsideDestructor(false) {}
virtual void run() override
{
TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
}
bool TraverseCXXDestructorDecl(CXXDestructorDecl* );
bool VisitCXXDeleteExpr(const CXXDeleteExpr* );
private:
bool mbInsideDestructor;
};
bool AutoMem::TraverseCXXDestructorDecl(CXXDestructorDecl* expr)
{
mbInsideDestructor = true;
bool ret = RecursiveASTVisitor::TraverseCXXDestructorDecl(expr);
mbInsideDestructor = false;
return ret;
}
bool AutoMem::VisitCXXDeleteExpr(const CXXDeleteExpr* expr)
{
if (ignoreLocation( expr ))
return true;
StringRef aFileName = getFilenameOfLocation(compiler.getSourceManager().getSpellingLoc(compat::getBeginLoc(expr)));
if (loplugin::hasPathnamePrefix(aFileName, SRCDIR "/include/salhelper/")
|| loplugin::hasPathnamePrefix(aFileName, SRCDIR "/include/osl/")
|| loplugin::hasPathnamePrefix(aFileName, SRCDIR "/salhelper/")
|| loplugin::hasPathnamePrefix(aFileName, SRCDIR "/store/")
|| loplugin::hasPathnamePrefix(aFileName, SRCDIR "/sal/"))
return true;
if (mbInsideDestructor)
return true;
const ImplicitCastExpr* pCastExpr = dyn_cast<ImplicitCastExpr>(expr->getArgument());
if (!pCastExpr)
return true;
const MemberExpr* pMemberExpr = dyn_cast<MemberExpr>(pCastExpr->getSubExpr());
if (!pMemberExpr)
return true;
// ignore union games
const FieldDecl* pFieldDecl = dyn_cast<FieldDecl>(pMemberExpr->getMemberDecl());
if (!pFieldDecl)
return true;
TagDecl const * td = dyn_cast<TagDecl>(pFieldDecl->getDeclContext());
if (td->isUnion())
return true;
report(
DiagnosticsEngine::Warning,
"calling delete on object field, rather use std::unique_ptr or std::scoped_ptr",
compat::getBeginLoc(expr))
<< expr->getSourceRange();
return true;
}
loplugin::Plugin::Registration< AutoMem > X("automem", false);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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