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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@1 72102866-910b-0410-8b05-ffd578937521
57 lines
2 KiB
Objective-C
57 lines
2 KiB
Objective-C
/* Protocol for GNU Objective-C objects that can write/read to a coder
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Copyright (C) 1993,1994 Free Software Foundation, Inc.
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Written by: R. Andrew McCallum <mccallum@gnu.ai.mit.edu>
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Date: July 1994
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This file is part of the GNU Objective C Class 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 Library 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 Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __Coding_h
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#define __Coding_h
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#include <objects/stdobjects.h>
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@class Coder;
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@protocol Coding
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- (void) encodeWithCoder: (Coder*)anEncoder;
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+ newWithCoder: (Coder*)aDecoder;
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/* NOTE:
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This is +newWithCoder: and not -initWithCoder: because many classes
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keep track of their instances and only allow one instance of each
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configuration. For example, see the designated initializers of
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SocketPort, Connection, and Proxy.
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Making this +new.. instead of -init.. prevents us from having to
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waste the effort of allocating space for an object to be decoded,
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then immediately deallocating that space because we're just
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returning a pre-existing object.
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I also like it because it makes very clear that this method is
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expected to return the decoded object. This requirement would have
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also been present in an -init... implementation, but the
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requirement may not have been 100 percent clear by the method name.
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-mccallum */
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@end
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#endif /* __Coding_h */
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