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#pragma once
#include "StdLibExtras.h"
#include "Types.h"
#include "Traits.h"
namespace AK {
template<typename T>
class OwnPtr {
public:
OwnPtr() { }
explicit OwnPtr(T* ptr) : m_ptr(ptr) { }
OwnPtr(OwnPtr&& other) : m_ptr(other.leak_ptr()) { }
template<typename U> OwnPtr(OwnPtr<U>&& other) : m_ptr(static_cast<T*>(other.leak_ptr())) { }
OwnPtr(std::nullptr_t) { };
~OwnPtr()
{
clear();
#ifdef SANITIZE_PTRS
if constexpr(sizeof(T*) == 8)
m_ptr = (T*)(0xe1e1e1e1e1e1e1e1);
else
m_ptr = (T*)(0xe1e1e1e1);
#endif
}
OwnPtr& operator=(OwnPtr&& other)
{
if (this != &other) {
delete m_ptr;
m_ptr = other.leak_ptr();
}
return *this;
}
template<typename U>
OwnPtr& operator=(OwnPtr<U>&& other)
{
if (this != static_cast<void*>(&other)) {
delete m_ptr;
m_ptr = other.leak_ptr();
}
return *this;
}
OwnPtr& operator=(T* ptr)
{
if (m_ptr != ptr)
delete m_ptr;
m_ptr = ptr;
return *this;
}
OwnPtr& operator=(std::nullptr_t)
{
clear();
return *this;
}
void clear()
{
delete m_ptr;
m_ptr = nullptr;
}
bool operator!() const { return !m_ptr; }
typedef T* OwnPtr::*UnspecifiedBoolType;
operator UnspecifiedBoolType() const { return m_ptr ? &OwnPtr::m_ptr : nullptr; }
T* leak_ptr()
{
T* leakedPtr = m_ptr;
m_ptr = nullptr;
return leakedPtr;
}
T* ptr() { return m_ptr; }
const T* ptr() const { return m_ptr; }
T* operator->() { return m_ptr; }
const T* operator->() const { return m_ptr; }
T& operator*() { return *m_ptr; }
const T& operator*() const { return *m_ptr; }
operator bool() { return !!m_ptr; }
private:
T* m_ptr = nullptr;
};
template<class T, class... Args> inline OwnPtr<T>
make(Args&&... args)
{
return OwnPtr<T>(new T(AK::forward<Args>(args)...));
}
template<typename T>
struct Traits<OwnPtr<T>> {
static unsigned hash(const OwnPtr<T>& p) { return (unsigned)p.ptr(); }
static void dump(const OwnPtr<T>& p) { kprintf("%p", p.ptr()); }
};
}
using AK::OwnPtr;
using AK::make;
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