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85 lines
2.9 KiB
C
85 lines
2.9 KiB
C
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/** Declaration of extension methods for base additions
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Copyright (C) 2003-2010 Free Software Foundation, Inc.
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Written by: Richard Frith-Macdonald <rfm@gnu.org>
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and: Adam Fedor <fedor@gnu.org>
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This file is part of the GNUstep Base Library.
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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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Library 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
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02111 USA.
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*/
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#ifndef INCLUDED_NSObject_GNUstepBase_h
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#define INCLUDED_NSObject_GNUstepBase_h
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#import <GNUstepBase/GSVersionMacros.h>
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#import <Foundation/NSObject.h>
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#if defined(__cplusplus)
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extern "C" {
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#endif
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#if OS_API_VERSION(GS_API_NONE,GS_API_LATEST)
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@interface NSObject (GNUstepBase)
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/**
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* Message sent when an implementation wants to explicitly exclude a method
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* (but cannot due to compiler constraint), and wants to make sure it is not
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* called by mistake. Default implementation raises an exception at runtime.
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*/
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- (id) notImplemented: (SEL)aSel;
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/**
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* Message sent when an implementation wants to explicitly require a subclass
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* to implement a method (but cannot at compile time since there is no
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* <code>abstract</code> keyword in Objective-C). Default implementation
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* raises an exception at runtime to alert developer that he/she forgot to
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* override a method.
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*/
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- (id) subclassResponsibility: (SEL)aSel;
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/**
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* Message sent when an implementation wants to explicitly exclude a method
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* (but cannot due to compiler constraint) and forbid that subclasses
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* implement it. Default implementation raises an exception at runtime. If a
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* subclass <em>does</em> implement this method, however, the superclass's
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* implementation will not be called, so this is not a perfect mechanism.
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*/
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- (id) shouldNotImplement: (SEL)aSel;
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/**
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WARNING: The -compare: method for NSObject is deprecated
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due to subclasses declaring the same selector with
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conflicting signatures.
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Comparision of arbitrary objects is not just meaningless
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but also dangerous as most concrete implementations
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expect comparable objects as arguments often accessing
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instance variables directly.
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This method will be removed in a future release.
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*/
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- (NSComparisonResult) compare: (id)anObject;
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@end
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#endif /* OS_API_VERSION */
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#if defined(__cplusplus)
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}
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#endif
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#endif /* INCLUDED_NSObject_GNUstepBase_h */
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