SafePtr.h

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#pragma once
 
 
#include "objects/wrappers/AutoPtr.h"
 
NAMESPACE_SPH_BEGIN
 
class SafePtrException : public std::exception {
public:
    virtual const char* what() const noexcept {
        return "Dereferencing nullptr";
    }
};
 
template <typename T>
class SafePtr : public AutoPtr<T> {
public:
    INLINE T& operator*() const {
        if (!ptr) {
            throw SafePtrException();
        }
        return *ptr;
    }
 
    INLINE T* operator->() const {
        if (!ptr) {
            throw SafePtrException();
        }
        return ptr;
    }
 
    template <typename... TArgs>
    INLINE decltype(auto) operator()(TArgs&&... args) const {
        if (!ptr) {
            throw SafePtrException();
        }
        return (*ptr)(std::forward<TArgs>(args)...);
    }
};
 
NAMESPACE_SPH_END