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solver.h

/***********************************************************************
 *
 * Copyright (C) 2009, 2010 Graeme Gott <graeme@gottcode.org>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 ***********************************************************************/

#ifndef SOLVER_H
#define SOLVER_H

#include <QHash>
#include <QList>
#include <QPoint>
#include <QVector>
class Trie;

class Solver {
      public:
            Solver(const Trie& words, const QStringList& letters, int minimum);

            QHash<QString, QList<QList<QPoint> > > solutions() const {
                  return m_solutions;
            }

            int score(int max = -1) const;
            static int score(const QString& word);

      private:
            struct Cell;
            void checkCell(Cell& cell);

      private:
            const Trie* m_words;
            int m_minimum;
            QString m_word;
            QList<QPoint> m_positions;
            QHash<QString, QList<QList<QPoint> > > m_solutions;

            struct Cell {
                  QString text;
                  QList<Cell*> neighbors;
                  QPoint position;
                  bool checked;
            };
            QVector<QVector<Cell> > m_cells;
};

#endif

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