typepointer.h

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/*
 * This file is part of the KDE libraries.
 *
 * Copyright 2005 Frerich Raabe <[email protected]>
 * Copyright 2007-2008 David Nolden <[email protected]>
 * Copyright 2014 Kevin Funk <[email protected]>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef KDEVPLATFORM_TYPEPOINTER_H
#define KDEVPLATFORM_TYPEPOINTER_H
 
#include <QExplicitlySharedDataPointer>
 
namespace KDevelop {
template <class T>
class TypePtr
    : public QExplicitlySharedDataPointer<T>
{
    using Base = QExplicitlySharedDataPointer<T>;
 
public:
    using Base::QExplicitlySharedDataPointer;
    TypePtr<T>() = default;
    TypePtr<T>(const TypePtr<T>&) = default;
 
    using Base::operator=;
    TypePtr<T>& operator=(const TypePtr<T>&) = default;
 
    template <class U>
    TypePtr<U> cast(U* /*dummy*/ = nullptr) const
    {
        return TypePtr<U>(dynamic_cast<U*>(Base::data()));
    }
 
    template <class U>
    static TypePtr<T> staticCast(const TypePtr<U>& o)
    {
        return TypePtr<T>(static_cast<T*>(o.data()));
    }
    template <class U>
    static TypePtr<T> dynamicCast(const TypePtr<U>& o)
    {
        return TypePtr<T>(dynamic_cast<T*>(o.data()));
    }
};
}
 
#endif