75 lines
2.7 KiB
C++
75 lines
2.7 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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//-----------------------------------------------------------------------------
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// eoObject.h
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// (c) GeNeura Team, 1998
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/*
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Contact: todos@geneura.ugr.es, http://geneura.ugr.es
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*/
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//-----------------------------------------------------------------------------
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#ifndef EOOBJECT_H
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#define EOOBJECT_H
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//-----------------------------------------------------------------------------
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#include <utils/eoData.h> // For limits definition
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#include <iostream> // std::istream, std::ostream
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#include <string> // std::string
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#include <utils/compatibility.h>
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//-----------------------------------------------------------------------------
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// eoObject
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//-----------------------------------------------------------------------------
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/**
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eoObject used to be the base class for the whole hierarchy, but this has
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changed. eoObject is used to define a name (#className#)
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that is used when loading or saving the state.
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Previously, this object also defined a print and read
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interface, but it´s been moved to eoPrintable and eoPersistent.
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It is recommended that you only derive from eoObject in concrete classes.
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Some parts of EO do not implement this yet, but that will change in the future.
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eoObject, together with eoPersistent and eoPrintable provide a simple persistence
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framework that is only needed when the classes have state that changes at runtime.
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@see eoPersistent eoPrintable, eoState
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*/
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class eoObject
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{
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public:
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/// Virtual dtor. They are needed in virtual class hierarchies.
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virtual ~eoObject() {}
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/** Return the class id. This should be redefined in each class.
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Only "leaf" classes can be non-virtual.
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Maarten: removed the default implementation as this proved to
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be too error-prone: I found several classes that had a typo in
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className (like classname), which would print eoObject instead of
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their own. Having it pure will force the implementor to provide a
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name.
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*/
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virtual std::string className() const = 0;
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};
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#endif
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