/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** information use the contact form at http://www.qt.io/contact-us.
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** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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****************************************************************************/

#ifndef QTCONCURRENT_EXCEPTION_H
#define QTCONCURRENT_EXCEPTION_H

#include <QtCore/qglobal.h>

#ifndef QT_NO_QFUTURE

#include <QtCore/qatomic.h>

#ifndef QT_NO_EXCEPTIONS
#  include <exception>
#endif

QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE

QT_MODULE(Core)

namespace QtConcurrent
{

#ifndef QT_NO_EXCEPTIONS

class Q_CORE_EXPORT Exception : public std::exception
{
public:
    virtual void raise() const;
    virtual Exception *clone() const;
};

class Q_CORE_EXPORT UnhandledException : public Exception
{
public:
    void raise() const;
    Exception *clone() const;
};

namespace internal {

class Base;
class ExceptionHolder
{
public:
    ExceptionHolder(Exception *exception = 0);
    ExceptionHolder(const ExceptionHolder &other);
    void operator=(const ExceptionHolder &other);
    ~ExceptionHolder();
    Exception *exception() const;
    Base *base;
};

class Q_CORE_EXPORT ExceptionStore
{
public:
    void setException(const Exception &e);
    bool hasException() const;
    ExceptionHolder exception();
    void throwPossibleException();
    bool hasThrown() const;
    ExceptionHolder exceptionHolder;
};

} // namespace internal

#else // QT_NO_EXCEPTIONS

namespace internal {

class Q_CORE_EXPORT ExceptionStore
{
public:
    ExceptionStore() { }
    inline void throwPossibleException() const {}
};

} // namespace internal

#endif

} // namespace QtConcurrent

QT_END_NAMESPACE
QT_END_HEADER

#endif // QT_NO_CONCURRENT

#endif
