PriorityPointerPair.h [plain text]
#ifndef liblldb_PriorityPointerPair_h_
#define liblldb_PriorityPointerPair_h_
#include "lldb/lldb-public.h"
#include "lldb/Utility/SharingPtr.h"
namespace lldb_utility {
template<typename T>
class PriorityPointerPair
{
public:
typedef T& reference_type;
typedef T* pointer_type;
typedef typename STD_SHARED_PTR(T) T_SP;
PriorityPointerPair() :
m_high(),
m_low()
{}
PriorityPointerPair(pointer_type high,
pointer_type low) :
m_high(high),
m_low(low)
{}
PriorityPointerPair(pointer_type low) :
m_high(),
m_low(low)
{}
PriorityPointerPair(T_SP& high,
T_SP& low) :
m_high(high),
m_low(low)
{}
PriorityPointerPair(T_SP& low) :
m_high(),
m_low(low)
{}
void
SwapLow(pointer_type l)
{
m_low.swap(l);
}
void
SwapHigh(pointer_type h)
{
m_high.swap(h);
}
void
SwapLow(T_SP l)
{
m_low.swap(l);
}
void
SwapHigh(T_SP h)
{
m_high.swap(h);
}
T_SP
GetLow()
{
return m_low;
}
T_SP
GetHigh()
{
return m_high;
}
T_SP
Get()
{
if (m_high.get())
return m_high;
return m_low;
}
void
ResetHigh()
{
m_high.reset();
}
void
ResetLow()
{
m_low.reset();
}
void
Reset()
{
ResetLow();
ResetHigh();
}
reference_type
operator*() const
{
return Get().operator*();
}
pointer_type
operator->() const
{
return Get().operator->();
}
~PriorityPointerPair();
private:
T_SP m_high;
T_SP m_low;
DISALLOW_COPY_AND_ASSIGN (PriorityPointerPair);
};
}
#endif // #ifndef liblldb_PriorityPointerPair_h_