forked from mia/Aegisub
49 lines
1.4 KiB
C++
49 lines
1.4 KiB
C++
// Copyright (c) 2010, Thomas Goyne <plorkyeran@aegisub.org>
|
|
//
|
|
// 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.
|
|
|
|
/// @file scoped_ptr.h
|
|
/// @brief
|
|
/// @ingroup libaegisub
|
|
|
|
#pragma once
|
|
|
|
namespace agi {
|
|
/// A generic scoped holder for non-pointer handles
|
|
template<class T, class Del = void(*)(T)>
|
|
class scoped_holder {
|
|
T value;
|
|
Del destructor;
|
|
|
|
scoped_holder(scoped_holder const&);
|
|
scoped_holder& operator=(scoped_holder const&);
|
|
public:
|
|
operator T() const { return value; }
|
|
T operator->() const { return value; }
|
|
|
|
scoped_holder& operator=(T new_value) {
|
|
if (value)
|
|
destructor(value);
|
|
value = new_value;
|
|
return *this;
|
|
}
|
|
|
|
scoped_holder(T value, Del destructor)
|
|
: value(value)
|
|
, destructor(destructor)
|
|
{
|
|
}
|
|
|
|
~scoped_holder() { if (value) destructor(value); }
|
|
};
|
|
}
|