17 lines
467 B
Smalltalk
17 lines
467 B
Smalltalk
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|addSlot p|
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addSlot :=
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[:obj :slotName |
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|anonCls newObj|
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anonCls := obj class
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subclass:(obj class name,'+') asSymbol
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instanceVariableNames:slotName
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classVariableNames:''
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poolDictionaries:'' category:nil
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inEnvironment:nil.
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anonCls compile:('%1 ^ %1' bindWith:slotName).
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anonCls compile:('%1:v %1 := v' bindWith:slotName).
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newObj := anonCls cloneFrom:obj.
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obj become:newObj.
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].
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