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Diffstat (limited to 'libs/ardour/ardour/comparable_shared_ptr.h')
-rw-r--r-- | libs/ardour/ardour/comparable_shared_ptr.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/libs/ardour/ardour/comparable_shared_ptr.h b/libs/ardour/ardour/comparable_shared_ptr.h new file mode 100644 index 0000000000..5ff19af419 --- /dev/null +++ b/libs/ardour/ardour/comparable_shared_ptr.h @@ -0,0 +1,56 @@ +/* + Copyright (C) 2011 Paul Davis + Author: Sakari Bergen + + 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 2 of the License, or + (at your option) 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, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +*/ + +#ifndef __ardour_comparable_shared_ptr_h__ +#define __ardour_comparable_shared_ptr_h__ + +namespace ARDOUR { + +template<typename T> +class ComparableSharedPtr : public boost::shared_ptr<T> + , public boost::less_than_comparable<ComparableSharedPtr<T> > +{ + public: + ComparableSharedPtr () {} + template<class Y> + explicit ComparableSharedPtr (Y * p) : boost::shared_ptr<T> (p) {} + + template<class Y, class D> + ComparableSharedPtr (Y * p, D d) : boost::shared_ptr<T> (p, d) {} + + template<class Y, class D, class A> + ComparableSharedPtr (Y * p, D d, A a) : boost::shared_ptr<T> (p, d, a) {} + + ComparableSharedPtr (ComparableSharedPtr const & r) : boost::shared_ptr<T> (r) {} + + template<class Y> + ComparableSharedPtr(ComparableSharedPtr<Y> const & r) : boost::shared_ptr<T> (r) {} + + template<class Y> + ComparableSharedPtr(ComparableSharedPtr<Y> const & r, T * p) : boost::shared_ptr<T> (r, p) {} + + template<class Y> + bool operator< (ComparableSharedPtr<Y> const & other) const { return **this < *other; } +}; + + +} // namespace ARDOUR + +#endif // __ardour_comparable_shared_ptr_h__ |