gzdoom-gles/libraries/adlmidi/chips/common/ptr.hpp
2020-10-15 13:41:56 +03:00

110 lines
2.3 KiB
C++

/*
* libADLMIDI is a free Software MIDI synthesizer library with OPL3 emulation
*
* Original ADLMIDI code: Copyright (c) 2010-2014 Joel Yliluoma <bisqwit@iki.fi>
* ADLMIDI Library API: Copyright (c) 2015-2020 Vitaly Novichkov <admin@wohlnet.ru>
*
* Library is based on the ADLMIDI, a MIDI player for Linux and Windows with OPL3 emulation:
* http://iki.fi/bisqwit/source/adlmidi.html
*
* This program 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 3 of the License, or
* any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MY_PTR_HPP_THING
#define MY_PTR_HPP_THING
#include <stddef.h>
#include <stdlib.h>
/*
Generic deleters for smart pointers
*/
template <class T>
struct My_DefaultDelete
{
void operator()(T *x) { delete x; }
};
template <class T>
struct My_DefaultArrayDelete
{
void operator()(T *x) { delete[] x; }
};
struct My_CDelete
{
void operator()(void *x) { free(x); }
};
/*
Safe unique pointer for C++98, non-copyable but swappable.
*/
template< class T, class Deleter = My_DefaultDelete<T> >
class My_UPtr
{
T *m_p;
public:
explicit My_UPtr(T *p = NULL)
: m_p(p) {}
~My_UPtr()
{
reset();
}
void reset(T *p = NULL)
{
if(p != m_p)
{
if(m_p)
{
Deleter del;
del(m_p);
}
m_p = p;
}
}
T *get() const
{
return m_p;
}
T *release()
{
T *ret = m_p;
m_p = NULL;
return ret;
}
T &operator*() const
{
return *m_p;
}
T *operator->() const
{
return m_p;
}
T &operator[](size_t index) const
{
return m_p[index];
}
private:
My_UPtr(const My_UPtr &);
My_UPtr &operator=(const My_UPtr &);
};
#endif // MY_PTR_HPP_THING