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1264
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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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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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