Added utilities directory, this contains state, parser etc.

eo/src/utils/eoState.h

@@ -0,0 +1,84 @@
+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+//-----------------------------------------------------------------------------
+// eoState.h
+// (c) Marc Schoenauer, Maarten Keijzer and GeNeura Team, 2000
+/* 
+    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 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    Contact: todos@geneura.ugr.es, http://geneura.ugr.es
+             Marc.Schoenauer@polytechnique.fr
+             mkeijzer@dhi.dk
+ */
+//-----------------------------------------------------------------------------
+
+#ifndef eoState_h
+#define eoState_h
+
+#include <stdexcept>
+#include <string>
+#include <map>
+
+class eoObject;
+class eoPersistent;
+
+/**
+* eoState can be used to register derivants of eoPersistent. It will
+* then in turn implement the persistence framework through members load
+* and save, that will call readFrom and printOn for the registrated objects.
+*/
+class eoState 
+{
+public :
+
+    /**
+    * Object registration function, note that it does not take ownership!
+    */
+    void registerObject(eoPersistent& registrant);
+    
+    /**
+    * Loading error thrown when nothing seems to work.
+    */
+    struct loading_error : public std::runtime_error
+    {
+        loading_error(std::string huh = "Error while loading") : std::runtime_error(huh) {}
+    };
+
+    std::string getCommentString(void) const { return "#"; }
+
+    /**
+    * Reads the file specified
+    *
+    *   @param _filename    the name of the file to load from
+    */
+    void load(const std::string& _filename);
+    
+    /**
+    * Saves the state in file specified
+    *
+    *   @param _filename    the name of the file to save into
+    */
+    void save(const std::string& _filename);
+
+private :
+    std::string createObjectName(eoObject* obj);
+
+    // first is Persistent, second is the raw data associated with it.
+    typedef std::map<std::string, eoPersistent*> ObjectMap;
+    
+    ObjectMap objectMap;
+};
+
+#endif //eoState_h