//// This file is a part of the Bayes Blocks library//// Copyright (C) 2001-2006 Markus Harva, Antti Honkela, Alexander// Ilin, Tapani Raiko, Harri Valpola and Tomas 謘tman.//// 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, 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 (included in file License.txt in the// program package) for more details.//// $Id: Decay.cc 7 2006-10-26 10:26:41Z ah $#include "config.h"#ifdef WITH_PYTHON#include <Python.h>#define __PYTHON_H_INCLUDED__#endif#include "Decay.h"#include "Net.h"#include <stdexcept>Decayer::Decayer(Net *net, NetLoader *loader){  string s;  decay_net = net;  loader->StartEnumCont("decay_hooks");  while (loader->GetString(s)) {    decay_hooks.insert(s);    decay_net->RegisterDecay(this, s);  }  loader->FinishEnumCont("decay_hooks");}Decayer::~Decayer(){  UnregisterFromAllHooks();}void Decayer::Save(NetSaver *saver){  std::set<string>::iterator i;  saver->StartEnumCont(decay_hooks.size(), "decay_hooks");  for (i = decay_hooks.begin(); i != decay_hooks.end(); i++)    saver->SetString(*i);  saver->FinishEnumCont("decay_hooks");}void Decayer::UnregisterFromAllHooks(){  std::set<string>::iterator i;  size_t last_size=decay_hooks.size();  while (last_size > 0) {    i = decay_hooks.begin();    // UnregisterDecayFromHook removes the current entry from decay_hooks    decay_net->UnregisterDecayFromHook(this, *i);    if (decay_hooks.size()>=last_size)      throw std::runtime_error("Size of decay_hooks didn't decrease as expected.");    last_size=decay_hooks.size();  }}