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"
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COPYRIGHT (c) 1993 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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Object subclass:#UndefinedVariable
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instanceVariableNames:'name'
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classVariableNames:''
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poolDictionaries:''
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category:'System-Compiler-Support'
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!
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UndefinedVariable comment:'
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COPYRIGHT (c) 1993 by Claus Gittinger
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All Rights Reserved
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This class exists solely for the error message when accessing undefined
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variables - instead of returning nil, the compiler returns an instance
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of this class, which will not understand ANY message.
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The error message will then be "UndefinedVariable ..." instead of
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"UndefineObject ..."
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3
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$Header: /cvs/stx/stx/libcomp/UndefinedVariable.st,v 1.2 1993-10-13 00:26:22 claus Exp $
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0
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'!
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!UndefinedVariable class methodsFor:'instance creation'!
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name:aString
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^ (self basicNew) setName:aString
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! !
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!UndefinedVariable methodsFor:'error reporting'!
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methodError
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self error:('trying to define methods for undefined class: ', name)
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!
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subclassingError
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self error:('trying to create subclass of undefined class: ', name)
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! !
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!UndefinedVariable methodsFor:'catching messages'!
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class
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^ self
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!
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methods
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self methodError
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!
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methodsFor:arg
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self methodError
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!
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subclass:t instanceVariableNames:f classVariableNames:d poolDictionaries:s
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self subclassingError
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!
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subclass:t instanceVariableNames:f classVariableNames:d poolDictionaries:s category:cat
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self subclassingError
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!
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variableByteSubclass:t instanceVariableNames:f
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classVariableNames:d poolDictionaries:s category:cat
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self subclassingError
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!
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variableSubclass:t instanceVariableNames:f
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classVariableNames:d poolDictionaries:s category:cat
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self subclassingError
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!
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variableWordSubclass:t instanceVariableNames:f
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classVariableNames:d poolDictionaries:s category:cat
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self subclassingError
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! !
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!UndefinedVariable methodsFor:'private accessing'!
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setName:aString
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name := aString
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! !
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!UndefinedVariable methodsFor:'printing & storing'!
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printString
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"return a string for printing myself"
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^ 'UndefinedVariable(' , name , ')'
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! !
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