/*
  This file is part of the clazy static checker.

  Copyright (C) 2018 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 "qstring-varargs.h"
#include "Utils.h"
#include "HierarchyUtils.h"
#include "QtUtils.h"
#include "TypeUtils.h"

#include <clang/AST/AST.h>

using namespace clang;
using namespace std;


QStringVarargs::QStringVarargs(const std::string &name, ClazyContext *context)
    : CheckBase(name, context, Option_CanIgnoreIncludes)
{
}

void QStringVarargs::VisitStmt(clang::Stmt *stmt)
{
    auto binop = dyn_cast<BinaryOperator>(stmt);
    if (!binop || binop->getOpcode() != BO_Comma)
        return;

    auto callexpr = dyn_cast<CallExpr>(binop->getLHS());
    if (!callexpr)
        return;

    FunctionDecl *func = callexpr->getDirectCallee();
    if (!func || func->getName() != "__builtin_trap")
        return;

    QualType qt = binop->getRHS()->getType();
    CXXRecordDecl *record = qt->getAsCXXRecordDecl();
    if (!record)
        return;

     StringRef name = clazy::name(record);
     if (name == "QString" || name == "QByteArray")
         emitWarning(stmt, string("Passing ") + name.data() + string(" to variadic function"));
}
