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/*
Copyright (C) 2023 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DCPOMATIC_WX_PTR_H
#define DCPOMATIC_WX_PTR_H
#include "lib/dcpomatic_assert.h"
#include <utility>
template <class T>
class wx_ptr
{
public:
wx_ptr() {}
explicit wx_ptr(T* wx)
: _wx(wx)
{}
wx_ptr(wx_ptr&) = delete;
wx_ptr& operator=(wx_ptr&) = delete;
wx_ptr(wx_ptr&& other)
{
_wx = other._wx;
other._wx = nullptr;
}
wx_ptr& operator=(wx_ptr&& other)
{
if (this != &other) {
_wx = other._wx;
other._wx = nullptr;
}
return *this;
}
~wx_ptr()
{
if (_wx) {
_wx->Destroy();
}
}
wx_ptr& operator=(T* ptr)
{
if (_wx) {
_wx->Destroy();
}
_wx = ptr;
return *this;
}
T* operator->()
{
DCPOMATIC_ASSERT(_wx);
return _wx;
}
operator bool() const
{
return _wx != nullptr;
}
void reset()
{
if (_wx) {
_wx->Destroy();
_wx = nullptr;
}
}
template <typename... Args>
void reset(Args&&... args)
{
if (_wx) {
_wx->Destroy();
_wx = nullptr;
}
_wx = new T(std::forward<Args>(args)...);
}
private:
T* _wx = nullptr;
};
template <class T, typename... Args>
wx_ptr<T>
make_wx(Args... args)
{
return wx_ptr<T>(new T(std::forward<Args>(args)...));
}
#endif
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