#pragma once
#include <wtf/Ref.h>
namespace WebCore {
template <typename T> class DataRef {
public:
DataRef(Ref<T>&& data)
: m_data(WTFMove(data))
{
}
DataRef(const DataRef& other)
: m_data(other.m_data.copyRef())
{
}
DataRef& operator=(const DataRef& other)
{
m_data = other.m_data.copyRef();
return *this;
}
DataRef(DataRef&&) = default;
DataRef& operator=(DataRef&&) = default;
DataRef replace(DataRef&& other)
{
return m_data.replace(WTFMove(other.m_data));
}
operator const T&() const
{
return m_data;
}
const T* ptr() const
{
return m_data.ptr();
}
const T& get() const
{
return m_data;
}
const T& operator*() const
{
return m_data;
}
const T* operator->() const
{
return m_data.ptr();
}
T& access()
{
if (!m_data->hasOneRef())
m_data = m_data->copy();
return m_data;
}
bool operator==(const DataRef& other) const
{
return m_data.ptr() == other.m_data.ptr() || m_data.get() == other.m_data.get();
}
bool operator!=(const DataRef& other) const
{
return !(*this == other);
}
private:
Ref<T> m_data;
};
}