2 Copyright (C) 2011 Paul Davis
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #ifndef __ardour_comparable_shared_ptr_h__
22 #define __ardour_comparable_shared_ptr_h__
24 #include "ardour/libardour_visibility.h"
29 class /*LIBARDOUR_API*/ ComparableSharedPtr : public boost::shared_ptr<T>
30 , public boost::less_than_comparable<ComparableSharedPtr<T> >
33 ComparableSharedPtr () {}
35 explicit ComparableSharedPtr (Y * p) : boost::shared_ptr<T> (p) {}
37 template<class Y, class D>
38 ComparableSharedPtr (Y * p, D d) : boost::shared_ptr<T> (p, d) {}
40 template<class Y, class D, class A>
41 ComparableSharedPtr (Y * p, D d, A a) : boost::shared_ptr<T> (p, d, a) {}
43 ComparableSharedPtr (ComparableSharedPtr const & r) : boost::shared_ptr<T> (r) {}
46 ComparableSharedPtr(ComparableSharedPtr<Y> const & r) : boost::shared_ptr<T> (r) {}
49 ComparableSharedPtr(ComparableSharedPtr<Y> const & r, T * p) : boost::shared_ptr<T> (r, p) {}
52 bool operator< (ComparableSharedPtr<Y> const & other) const { return **this < *other; }
58 #endif // __ardour_comparable_shared_ptr_h__