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"
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COPYRIGHT (c) 2003 by eXept Software AG
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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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"{ Package: 'stx:libcomp' }"
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Object variableSubclass:#Reference
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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category:'Kernel-Methods'
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!
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Reference variableSubclass:#ContextVariableReference
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instanceVariableNames:'context index'
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classVariableNames:''
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poolDictionaries:''
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privateIn:Reference
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!
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Reference::ContextVariableReference variableSubclass:#ArgumentReference
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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privateIn:Reference
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!
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Reference::ContextVariableReference variableSubclass:#LocalVariableReference
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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privateIn:Reference
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!
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!Reference class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 2003 by eXept Software AG
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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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example1
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|foo ref|
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ref := Reference forLocal:1 in:thisContext.
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ref inspect
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"
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self example1
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"
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!
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example2
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"/ |foo ref|
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"/
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"/ foo := 123.
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"/ ref := &foo.
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"/ ref inspect
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"
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self example2
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"
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! !
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!Reference class methodsFor:'instance creation'!
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forArgument:argIndex in:aContext
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^ ArgumentReference new
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context:aContext index:argIndex
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!
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forLocal:varIndex in:aContext
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^ LocalVariableReference new
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context:aContext index:varIndex
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! !
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!Reference::ContextVariableReference methodsFor:'accessing'!
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context:contextArg index:indexArg
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context := contextArg.
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index := indexArg.
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! !
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!Reference::ArgumentReference methodsFor:'accessing'!
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value
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^ context argAt:index
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!
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value:newValue
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self error:'write into argument ref'.
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^ newValue
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! !
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!Reference::LocalVariableReference methodsFor:'accessing'!
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value
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^ context varAt:index
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!
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value:newValue
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^ context varAt:index put:newValue
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! !
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!Reference class methodsFor:'documentation'!
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version
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^ '$Header: /cvs/stx/stx/libcomp/Reference.st,v 1.3 2003-08-29 19:21:52 cg Exp $'
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! !
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