text: /***********************************************************************
   Moses - statistical machine translation system
   Copyright (C) 2006-2012 University of Edinburgh
  
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.
  
   This library 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
   Lesser General Public License for more details.
  
   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
   ***********************************************************************/
  
  #pragma once
  
  #include <utility>
  
  namespace Moses
  {
  
  /** @todo what is this?
   */
  struct IntermediateVarSpanNode
  {
   public:
    typedef std::pair<int, int> Range;
  
    IntermediateVarSpanNode()
      : m_start(Range(-1, -1))
      , m_end(Range(-1, -1))
      , m_numSplitPoints(0) {}
  
    IntermediateVarSpanNode(const Range &start, const Range &end)
      : m_start(start)
      , m_end(end)
      , m_numSplitPoints(0) {}
  
    bool isOpen() { return m_end.second == -1; }
    bool isClosed() { return !isOpen(); }
  
    Range m_start;
    Range m_end;
    int m_numSplitPoints;
  };
  
  }
  