PropagateConst.h

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#pragma once
 
 
#include "objects/wrappers/RawPtr.h"
 
NAMESPACE_SPH_BEGIN
 
template <typename TPtr>
class PropagateConst {
private:
    TPtr ptr;
 
    using TRef = decltype(*std::declval<TPtr>());
    static_assert(std::is_reference<TRef>::value, "Must be a reference");
 
    using TValue = std::decay_t<TRef>;
    using TConstRef = std::add_const_t<TValue>&;
 
public:
    PropagateConst() = default;
 
    PropagateConst(TPtr&& ptr)
        : ptr(std::move(ptr)) {}
 
    PropagateConst(PropagateConst&& other)
        : ptr(std::move(other.ptr)) {}
 
    PropagateConst& operator=(TPtr&& newPtr) {
        ptr = std::move(newPtr);
        return *this;
    }
 
    TRef operator*() {
        return *ptr;
    }
 
    TConstRef operator*() const {
        return *ptr;
    }
 
    RawPtr<TValue> operator->() {
        return ptr.get();
    }
 
    RawPtr<const TValue> operator->() const {
        return ptr.get();
    }
};
 
NAMESPACE_SPH_END