/********************************************************************** *
 *   FreeDoko a Doppelkopf-Game
 *    
 *   Copyright (C) 2001-2007  by Diether Knof and Borg Enders
 *
 *   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 can find this license in the file 'gpl.txt'.
 *
 *   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., 59 Temple Place, Suite 330, Boston, 
 *   MA  02111-1307  USA
 *
 *  Contact:
 *    Diether Knof dknof@gmx.de
 *    Borg Enders  borg@borgsoft.de
 *
 *********************************************************************/

#include "constants.h"

#ifdef USE_UI_GTKMM

#include "thrower.h"

#include "../../card/card.h"

#ifdef DKNOF
//#define THROWER_INFO
#endif

namespace UI_GTKMM_NS {

  /**
   **
   ** constrctor
   **
   ** @param     -
   **
   ** @return    -
   ** 
   ** @author    Diether Knof
   **
   ** @version   0.6.8
   **
   **/
  Thrower::Thrower() :
    exception_(),
    exception_type_(NONE),
    depth_(0),
    file(),
    line(0)
  { }

  /**
   **
   ** destructor
   **
   ** @param     -
   **
   ** @return    -
   ** 
   ** @author    Diether Knof
   **
   ** @version   0.6.8
   **
   **/
  Thrower::~Thrower()
  { }

  /**
   **
   ** -> result
   **
   ** @param     -
   **
   ** @return    whether an exception will be thrown
   ** 
   ** @author    Diether Knof
   **
   ** @version   0.6.8
   **
   **/
  Thrower::operator bool() const
  {
    return this->will_throw();
  } // Thrower::operator bool() const

  /**
   **
   ** -> result
   **
   ** @param     -
   **
   ** @return    whether an exception will be thrown
   ** 
   ** @author    Diether Knof
   **
   ** @version   0.6.8
   **
   **/
  bool
    Thrower::will_throw() const
    {
      return (this->exception_type() != NONE);
    } // bool Thrower::will_throw() const

  /**
   **
   ** throws the delayed exception
   **
   ** @param     -
   **
   ** @return    - (of course)
   ** 
   ** @author    Diether Knof
   **
   ** @version   0.6.8
   **
   **/
  void
    Thrower::throw_it()
    throw(GameStatus, Card)
    {
      if (this->exception_type() == NONE)
        return ;

#ifdef THROWER_INFO
      cout << "thrower: throw it" << endl;
#endif

      // Since this function is left by throwing an exception,
      // I have to delete the type before the 'switch' (or in each 'case')
      // and I cannot use 'this->clear()' because then I do not have the
      // information afterwards.
      Type const type = this->exception_type();

      this->exception_type_ = NONE;

      switch (type) {
      case NONE:
        break;
      case GAMESTATUS:
        throw (this->exception().game_status);
        break;
      case CARD:
        {
          Card const card = *this->exception().card;
          delete this->exception().card;
          this->exception_.card = NULL;

          throw (card);
        }
        break;
      }; // switch(type)

      return ;
    } // void Thrower::throw_it()

  /**
   **
   ** removes the exception to throw
   **
   ** @param     -
   **
   ** @return    -
   ** 
   ** @author    Diether Knof
   **
   ** @version   0.6.8
   **
   **/
  void
    Thrower::clear()
    {
#ifdef THROWER_INFO
      cout << "thrower: clear" << endl;
#endif
      switch (this->exception_type()) {
      case NONE:
      case GAMESTATUS:
        break;
      case CARD:
        delete this->exception().card;
        break;
      } // switch (this->exception_type())

      this->exception_type_ = NONE;

      return ;
    } // void Thrower::clear()

  /**
   ** increment the depth
   **
   ** @param     -
   **
   ** @return    -
   **
   ** @author    Diether Knof
   **
   ** @version   0.7.4
   **/
  void
    Thrower::inc_depth()
    {
      this->depth_ += 1;
      return ;
    } // void Thrower::inc_depth()

  /**
   ** decrement the depth
   ** if depth '0' is reached, throw
   **
   ** @param     -
   **
   ** @return    -
   **
   ** @author    Diether Knof
   **
   ** @version   0.7.4
   **/
  void
    Thrower::dec_depth()
    {
      DEBUG_ASSERTION((this->depth() > 0),
                      "Thrower::dec_depth()\n"
                      "  depth is '0'");
      DEBUG_ASSERTION((this->depth() < 10000),
                      "Thrower::dec_depth()\n"
                      "  depth is too big: " << this->depth());

      this->depth_ -= 1;

      if (this->depth() == 0) {
        this->throw_it();
      }

      return ;
    } // void Thrower::dec_depth()

  /**
   ** set the depth
   ** only use if you know exactly why you need it!
   **
   ** @param     depth   new depth
   **
   ** @return    -
   **
   ** @author    Diether Knof
   **
   ** @version   0.7.4
   **/
  void
    Thrower::set_depth(unsigned const depth)
    {
      this->depth_ = depth;
      return ;
    } // void Thrower::set_depth(unsigned depth)

  /**
   ** stores 'game_status' for throwing
   **
   ** @param     game_status   object to throw
   ** @param     file          the file of the throw
   ** @param     line          the line number of the throw
   **
   ** @return    -
   ** 
   ** @author    Diether Knof
   **
   ** @version   0.7.2b
   **/
  void
    Thrower::operator()(GameStatus const game_status,
                        string const& file,
                        unsigned const line)
    {
#ifdef THROWER_INFO
      cout << "thrower: throw game status '" << game_status << "'" << endl;
#endif
      DEBUG_ASSERTION(!this->will_throw(),
                      "Thrower::operator()(GameStatus):\n"
                      "  will already throw '"
                      << this->exception_type() << "'\n"
                      "  first throw: " << this->file << "::" << this->line
                      << '\n'
                      << "  new throw: " << file << "::" << line << '\n');

      this->exception_type_ = GAMESTATUS;
      this->exception_.game_status = game_status;

      this->file = file;
      this->line = line;

      return ;
    } // bool Thrower::operator()(GameStatus game_status, string file, unsigned line)

  /**
   ** stores 'card' for throwing
   **
   ** @param     card   object to throw
   ** @param     file   the file of the throw
   ** @param     line   the line number of the throw
   **
   ** @return    -
   ** 
   ** @author    Diether Knof
   **
   ** @version   0.7.2b
   **/
  void
    Thrower::operator()(Card const& card,
                        string const& file,
                        unsigned const line)
    {
      // double throw (by clicking to fast)
      if (this->exception_type_ == CARD)
        return ;

#ifdef THROWER_INFO
      cout << "thrower: throw card '" << card << "'" << endl;
#endif
      DEBUG_ASSERTION(!this->will_throw(),
                      "Thrower::operator()(Card):\n"
                      "  will already throw '"
                      << this->exception_type() << "'\n"
                      "  first throw: " << this->file << "::" << this->line
                      << '\n'
                      << "  new throw: " << file << "::" << line << '\n');

      this->exception_type_ = CARD;
      this->exception_.card = new Card(card);

      this->file = file;
      this->line = line;

      return ;
    } // bool Thrower::operator()(Card card, string file, unsigned line)

} // namespace UI_GTKMM_NS

#endif // #ifdef USE_UI_GTKMM