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IMG_MemPtr.h

#ifndef _H_IMG_MemPtr
#define _H_IMG_MemPtr

#include <stddef.h>


template <class T> class IMG_MemPtr {
public:
        T* m_p;
        bool m_owned;

        class Size {};
        class Memory {};

        IMG_MemPtr(size_t s)
                : m_p(0), m_owned(false)
        {
                if (s > 0) {
                        m_p = new T[s];
                        if (!m_p) {
                                throw Memory();
                        }
                        m_owned = true;
                }
                else {
                        throw Size();
                }
        }

        IMG_MemPtr(void* p, size_t s)
                : m_p(0), m_owned(false)
        {
                if (p && (s > 0)) {
                        m_p = (T*)p;
                }
                else {
                        throw Size();
                }
        }

        ~IMG_MemPtr() { if (m_p && m_owned) { delete [] m_p; m_p = 0; } }

        operator T*() { return m_p; }
};

#endif // _H_IMG_MemPtr

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