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#pragma once
#include "shared_pointer.hh"
template <typename T>
SharedPointer<T>::SharedPointer(element_type* p)
{
if (p == nullptr)
{
data_ = nullptr;
count_ = nullptr;
}
else
{
data_ = p;
count_ = new long{ 1 };
}
}
template <typename T>
SharedPointer<T>::~SharedPointer()
{
if (count_ != nullptr)
{
(*count_)--;
if (*count_ == 0)
{
delete count_;
if (data_ != nullptr)
delete data_;
}
}
}
template <typename T>
SharedPointer<T>::SharedPointer(const SharedPointer<element_type>& other)
{
this->~SharedPointer();
data_ = other.data_;
if (data_ == nullptr)
count_ = nullptr;
count_ = other.count_;
if (count_ != nullptr)
(*count_)++;
}
template <typename T>
void SharedPointer<T>::reset(element_type* p)
{
if (data_ == p)
return;
this->~SharedPointer();
data_ = p;
if (p == nullptr)
count_ = nullptr;
else
count_ = new long{ 1 };
}
template <typename T>
SharedPointer<T>& SharedPointer<T>::operator=(const SharedPointer<T>& other)
{
this->~SharedPointer();
data_ = other.data_;
count_ = other.count_;
if (nullptr != other.data_)
{
(*this->count_)++;
}
return *this;
}
template <typename T>
T& SharedPointer<T>::operator*() const
{
return *data_;
}
template <typename T>
T* SharedPointer<T>::operator->() const
{
return data_;
}
template <typename T>
T* SharedPointer<T>::get() const
{
return data_;
}
template <typename T>
long SharedPointer<T>::use_count() const
{
if (count_ == nullptr)
return 0;
return *count_;
}
template <typename T>
template <typename U>
bool SharedPointer<T>::operator==(const SharedPointer<U>& rhs) const
{
if (rhs.data_ == this->data_)
return true;
return false;
}
template <typename T>
template <typename U>
bool SharedPointer<T>::operator!=(const SharedPointer<U>& rhs) const
{
return !(*this == rhs);
}
template <typename T>
bool SharedPointer<T>::operator==(const T* p) const
{
return this->data_ == p;
}
template <typename T>
bool SharedPointer<T>::operator!=(const T* p) const
{
return this->data_ != p;
}
template <typename T>
SharedPointer<T>& SharedPointer<T>::operator=(SharedPointer<T>&& other) noexcept
{
this->~SharedPointer();
data_ = other.data_;
count_ = other.count_;
other.data_ = nullptr;
other.count_ = nullptr;
return *this;
}
template <typename T>
SharedPointer<T>::SharedPointer(SharedPointer&& other)
{
this->~SharedPointer();
data_ = other.data_;
count_ = other.count_;
other.data_ = nullptr;
other.count_ = nullptr;
}
template <typename T>
SharedPointer<T>::operator bool() const
{
return data_ != nullptr;
}
template <typename T>
template <typename U>
bool SharedPointer<T>::is_a() const
{
return dynamic_cast<U*>(data_);
}
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