obs-studio/libobs/util/windows/CoTaskMemPtr.hpp

/*
 * Copyright (c) 2014 Hugh Bailey <[email protected]>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#pragma once

template<typename T> class CoTaskMemPtr {
	T *ptr;

	inline void Clear()
	{
		if (ptr)
			CoTaskMemFree(ptr);
	}

public:
	inline CoTaskMemPtr() : ptr(NULL) {}
	inline CoTaskMemPtr(T *ptr_) : ptr(ptr_) {}
	inline ~CoTaskMemPtr() { Clear(); }

	inline operator T *() const { return ptr; }
	inline T *operator->() const { return ptr; }

	inline const T *Get() const { return ptr; }

	inline CoTaskMemPtr &operator=(T *val)
	{
		Clear();
		ptr = val;
		return *this;
	}

	inline T **operator&()
	{
		Clear();
		ptr = NULL;
		return &ptr;
	}
};