#ifndef JSRetainPtr_h
#define JSRetainPtr_h
#include <JavaScriptCore/JSStringRef.h>
#include <algorithm>
inline void JSRetain(JSStringRef string) { JSStringRetain(string); }
inline void JSRelease(JSStringRef string) { JSStringRelease(string); }
enum AdoptTag { Adopt };
template <typename T> class JSRetainPtr {
public:
JSRetainPtr() : m_ptr(0) {}
JSRetainPtr(T ptr) : m_ptr(ptr) { if (ptr) JSRetain(ptr); }
JSRetainPtr(AdoptTag, T ptr) : m_ptr(ptr) { }
JSRetainPtr(const JSRetainPtr& o) : m_ptr(o.m_ptr) { if (T ptr = m_ptr) JSRetain(ptr); }
~JSRetainPtr() { if (T ptr = m_ptr) JSRelease(ptr); }
template <typename U> JSRetainPtr(const JSRetainPtr<U>& o) : m_ptr(o.get()) { if (T ptr = m_ptr) JSRetain(ptr); }
T get() const { return m_ptr; }
T releaseRef() { T tmp = m_ptr; m_ptr = 0; return tmp; }
T operator->() const { return m_ptr; }
bool operator!() const { return !m_ptr; }
typedef T JSRetainPtr::*UnspecifiedBoolType;
operator UnspecifiedBoolType() const { return m_ptr ? &JSRetainPtr::m_ptr : 0; }
JSRetainPtr& operator=(const JSRetainPtr&);
template <typename U> JSRetainPtr& operator=(const JSRetainPtr<U>&);
JSRetainPtr& operator=(T);
template <typename U> JSRetainPtr& operator=(U*);
void adopt(T);
void swap(JSRetainPtr&);
private:
T m_ptr;
};
template <typename T> inline JSRetainPtr<T>& JSRetainPtr<T>::operator=(const JSRetainPtr<T>& o)
{
T optr = o.get();
if (optr)
JSRetain(optr);
T ptr = m_ptr;
m_ptr = optr;
if (ptr)
JSRelease(ptr);
return *this;
}
template <typename T> template <typename U> inline JSRetainPtr<T>& JSRetainPtr<T>::operator=(const JSRetainPtr<U>& o)
{
T optr = o.get();
if (optr)
JSRetain(optr);
T ptr = m_ptr;
m_ptr = optr;
if (ptr)
JSRelease(ptr);
return *this;
}
template <typename T> inline JSRetainPtr<T>& JSRetainPtr<T>::operator=(T optr)
{
if (optr)
JSRetain(optr);
T ptr = m_ptr;
m_ptr = optr;
if (ptr)
JSRelease(ptr);
return *this;
}
template <typename T> inline void JSRetainPtr<T>::adopt(T optr)
{
T ptr = m_ptr;
m_ptr = optr;
if (ptr)
JSRelease(ptr);
}
template <typename T> template <typename U> inline JSRetainPtr<T>& JSRetainPtr<T>::operator=(U* optr)
{
if (optr)
JSRetain(optr);
T ptr = m_ptr;
m_ptr = optr;
if (ptr)
JSRelease(ptr);
return *this;
}
template <class T> inline void JSRetainPtr<T>::swap(JSRetainPtr<T>& o)
{
std::swap(m_ptr, o.m_ptr);
}
template <class T> inline void swap(JSRetainPtr<T>& a, JSRetainPtr<T>& b)
{
a.swap(b);
}
template <typename T, typename U> inline bool operator==(const JSRetainPtr<T>& a, const JSRetainPtr<U>& b)
{
return a.get() == b.get();
}
template <typename T, typename U> inline bool operator==(const JSRetainPtr<T>& a, U* b)
{
return a.get() == b;
}
template <typename T, typename U> inline bool operator==(T* a, const JSRetainPtr<U>& b)
{
return a == b.get();
}
template <typename T, typename U> inline bool operator!=(const JSRetainPtr<T>& a, const JSRetainPtr<U>& b)
{
return a.get() != b.get();
}
template <typename T, typename U> inline bool operator!=(const JSRetainPtr<T>& a, U* b)
{
return a.get() != b;
}
template <typename T, typename U> inline bool operator!=(T* a, const JSRetainPtr<U>& b)
{
return a != b.get();
}
#endif // JSRetainPtr_h