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#pragma once
#include <string>
namespace ov4
{
template <typename T>
class T_raw_mem
{
public:
void *_p;
std::size_t _len;
explicit T_raw_mem(std::size_t size)
{
_p = operator new(size);
_len = size;
}
~T_raw_mem()
{
operator delete(_p);
}
T *get() const noexcept
{
return static_cast<T*>(_p);
}
std::size_t get_size() const noexcept
{
return len;
}
// COPY is not allowed
T_raw_mem(const T_raw_mem&) = delete;
T_raw_mem& operator=(const T_raw_mem&) = delete;
// MOVE constructor
T_raw_mem(T_raw_mem &&x) noexcept
: p(std::exchange(x._p, nullptr)), slen(std::exchange(x._len, 0))
{ /* empty */ }
T_raw_mem& operator=(T_raw_mem &&x) noexcept
{
// if they are same
// release itself, which is not expected
if (this != &x)
{
// consider statement: y = x;
// release memory of y (if exist)
operator delete(_p);
// and then move
_p = std::exchange(x._p, nullptr);
_len = std::exchange(x._len, 0);
}
return *this;
}
};
}
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