Class DUChainPointer

kdevplatform/language/duchain/duchainpointer.h:78–183

template <class Type>
class DUChainPointer
{
    template <class OtherType>
    friend class DUChainPointer;

public:
    DUChainPointer() : d(QExplicitlySharedDataPointer<DUChainPointerData>(nullptr))
    {
    }

    DUChainPointer(const DUChainPointer&) = default;
    DUChainPointer(DUChainPointer&&) = default;

    ///This constructor includes dynamic casting. If the object cannot be casted to the type, the constructed DUChainPointer will have value zero.
    template <class OtherType>
    explicit DUChainPointer(OtherType* rhs)
    {
        if (dynamic_cast<Type*>(rhs))
            d = rhs->weakPointer();
    }

    template <class OtherType>
    explicit DUChainPointer(DUChainPointer<OtherType> rhs)
    {
        if (dynamic_cast<Type*>(rhs.data()))
            d = rhs.d;
    }

    explicit DUChainPointer(QExplicitlySharedDataPointer<DUChainPointerData> rhs)
    {
        if (dynamic_cast<Type*>(rhs->base()))
            d = rhs;
    }

    explicit DUChainPointer(Type* rhs)
    {
        if (rhs)
            d = rhs->weakPointer();
    }

    ~DUChainPointer() = default;

    bool operator ==(const DUChainPointer<Type>& rhs) const
    {
        return d.data() == rhs.d.data();
    }

    bool operator !=(const DUChainPointer<Type>& rhs) const
    {
        return d.data() != rhs.d.data();
    }

    ///Returns whether the pointed object is still existing
    operator bool() const {
        return d && d->base();
    }

    Type& operator*() const