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+/*
+ This file is part of Machina.
+ Copyright 2007-2013 David Robillard <http://drobilla.net>
+
+ Machina 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.
+
+ Machina 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 Machina. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef MACHINA_EDGE_HPP
+#define MACHINA_EDGE_HPP
+
+#include <list>
+
+#include "machina/types.hpp"
+
+#include "Action.hpp"
+#include "Stateful.hpp"
+
+namespace machina {
+
+class Node;
+
+class Edge : public Stateful
+{
+public:
+ Edge(WPtr<Node> tail, SPtr<Node> head, float probability=1.0f)
+ : _tail(tail)
+ , _head(head)
+ , _probability(probability)
+ {}
+
+ void set(URIInt key, const Atom& value);
+ void write_state(Sord::Model& model);
+
+ WPtr<Node> tail() { return _tail; }
+ SPtr<Node> head() { return _head; }
+
+ void set_tail(WPtr<Node> tail) { _tail = tail; }
+ void set_head(SPtr<Node> head) { _head = head; }
+
+ inline float probability() const { return _probability; }
+ inline void set_probability(float p) { _probability = p; }
+
+private:
+ WPtr<Node> _tail;
+ SPtr<Node> _head;
+ float _probability;
+};
+
+} // namespace machina
+
+#endif // MACHINA_EDGE_HPP