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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@7189 72102866-910b-0410-8b05-ffd578937521
102 lines
2.6 KiB
Objective-C
102 lines
2.6 KiB
Objective-C
/* Interface for Objective-C Collection object
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Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
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Written by: Andrew Kachites McCallum <mccallum@gnu.ai.mit.edu>
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Date: May 1993
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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 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., 59 Temple Place, Suite 330, Boston, MA 02111 USA.
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*/
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/* This is the abstract superclass that satisfies the Collecting
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protocol, without using any instance variables.
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*/
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#ifndef __Collection_h_GNUSTEP_BASE_INCLUDE
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#define __Collection_h_GNUSTEP_BASE_INCLUDE
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#include <Foundation/NSObject.h>
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#include <base/Collecting.h>
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#include <base/preface.h>
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#include <base/Coding.h>
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@interface ConstantCollection : NSObject <ConstantCollecting>
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- printForDebugger; /* This method will disappear later. */
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@end
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@interface Collection : ConstantCollection <Collecting>
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@end
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@interface Enumerator : NSObject <Enumerating>
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{
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id collection;
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void *enum_state;
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}
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@end
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#define FOR_COLLECTION(ACOLL, ELT) \
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{ \
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void *_es = [ACOLL newEnumState]; \
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while ((ELT = [ACOLL nextObjectWithEnumState: &_es])) \
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{
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#define END_FOR_COLLECTION(ACOLL) \
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} \
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[ACOLL freeEnumState: &_es]; \
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}
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#define FOR_COLLECTION_WHILE_TRUE(ACOLL, ELT, FLAG) \
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{ \
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void *_es = [ACOLL newEnumState]; \
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while (FLAG && (ELT = [ACOLL nextObjectWithEnumState: &_es])) \
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{
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#define END_FOR_COLLECTION_WHILE_TRUE(ACOLL) \
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} \
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[ACOLL freeEnumState: &_es]; \
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}
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/* The only subclassResponsibilities in Collection are:
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addElement:
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removeElement:
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getNextElement:withEnumState:
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empty
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But subclasses may need to override the following for correctness:
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contentType
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comparisonFunction
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but subclasses will want to override others as well in order to
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increase efficiency, especially:
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count
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and perhaps:
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includesElement:
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occurrencesOfElement:
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uniqueContents
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withElementsCall:whileTrue:
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withElementsCall:
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isEmpty
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releaseObjects
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*/
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#endif /* __Collection_h_GNUSTEP_BASE_INCLUDE */
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