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/*
This file is part of the clazy static checker.
Copyright (C) 2015 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
Author: Sérgio Martins <sergio.martins@kdab.com>
Copyright (C) 2015 Sergio Martins <smartins@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "non-pod-global-static.h"
#include "Utils.h"
#include "StringUtils.h"
#include "MacroUtils.h"
#include "QtUtils.h"
#include "ClazyContext.h"
#include <clang/AST/DeclCXX.h>
#include <clang/Lex/Lexer.h>
using namespace clang;
using namespace std;
static bool shouldIgnoreType(StringRef name)
{
// Q_GLOBAL_STATIC and such
static vector<StringRef> blacklist = {"Holder", "AFUNC", "QLoggingCategory", "QThreadStorage"};
return clazy::contains(blacklist, name);
}
NonPodGlobalStatic::NonPodGlobalStatic(const std::string &name, ClazyContext *context)
: CheckBase(name, context, Option_CanIgnoreIncludes)
{
m_filesToIgnore = { "main.cpp", "qrc_", "qdbusxml2cpp" };
}
void NonPodGlobalStatic::VisitStmt(clang::Stmt *stm)
{
VarDecl *varDecl = m_context->lastDecl ? dyn_cast<VarDecl>(m_context->lastDecl) : nullptr;
if (!varDecl || varDecl->isConstexpr() || varDecl->isExternallyVisible() || !varDecl->isFileVarDecl())
return;
if (shouldIgnoreFile(getLocStart(stm)))
return;
StorageDuration sd = varDecl->getStorageDuration();
if (sd != StorageDuration::SD_Static)
return;
const SourceLocation declStart = getLocStart(varDecl);
if (declStart.isMacroID()) {
auto macroName = Lexer::getImmediateMacroName(declStart, sm(), lo());
if (clazy::startsWithAny(macroName, { "Q_IMPORT_PLUGIN", "Q_CONSTRUCTOR_FUNCTION", "Q_DESTRUCTOR_FUNCTION"})) // Don't warn on these
return;
}
CXXConstructExpr *ctorExpr = dyn_cast<CXXConstructExpr>(stm);
if (!ctorExpr)
return;
auto ctorDecl = ctorExpr->getConstructor();
auto recordDecl = ctorDecl ? ctorDecl->getParent() : nullptr;
if (!recordDecl)
return;
if (recordDecl->hasTrivialDestructor()) {
// Has a trivial dtor, but now lets check the ctors.
if (ctorDecl->isDefaultConstructor() && recordDecl->hasTrivialDefaultConstructor()) {
// both dtor and called ctor are trivial, no warning
return;
} else if (ctorDecl->isConstexpr()) {
// Used ctor is constexpr, it's fine
return;
}
}
if (m_context->isQtDeveloper() && clazy::isBootstrapping(m_context->ci.getPreprocessorOpts()))
return;
StringRef className = recordDecl->getName();
if (!shouldIgnoreType(className)) {
std::string error = string("non-POD static (") + className.data() + string(")");
emitWarning(declStart, error);
}
}
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