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"
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COPYRIGHT (c) 1994 by Claus Gittinger
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All Rights Reserved
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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IdentitySet subclass:#WeakIdentitySet
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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159
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category:'Collections-Unordered'
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94
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!
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WeakIdentitySet comment:'
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COPYRIGHT (c) 1994 by Claus Gittinger
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All Rights Reserved
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159
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$Header: /cvs/stx/stx/libbasic/WeakIdentitySet.st,v 1.3 1994-10-10 00:29:15 claus Exp $
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94
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'!
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!WeakIdentitySet class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1994 by Claus Gittinger
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All Rights Reserved
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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!
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version
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"
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159
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$Header: /cvs/stx/stx/libbasic/WeakIdentitySet.st,v 1.3 1994-10-10 00:29:15 claus Exp $
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94
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"
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!
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documentation
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"
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this is a special class to support dependencies which do not
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prevent objects from dying.
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"
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! !
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111
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!WeakIdentitySet class methodsFor:'instance creation'!
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new
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"return a new empty Set"
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^ self new:1
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! !
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94
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!WeakIdentitySet methodsFor:'private'!
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111
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goodSizeFor:arg
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"return a good array size for the given argument.
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Since WeakIdentitySets are mostly used for dependency management, we typically
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have only one element in the set. Therefore use exact size for small sets
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(instead of rounding up to the prime 11)."
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arg <= 10 ifTrue:[^ arg].
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^ super goodSizeFor:arg
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!
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94
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keyContainerOfSize:n
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"return a container for keys and values of size n.
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use WeakArrays here."
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|w|
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w := WeakArray new:n.
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w watcher:self.
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^ w
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! !
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!WeakIdentitySet methodsFor:'element disposal'!
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informDispose
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"an element died - must rehash"
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self rehash
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! !
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