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"{ Package: 'stx:goodies/smaCC' }"
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"{ NameSpace: SmaCC }"
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SmaCCRegularExpressionNode subclass:#SmaCCOrRENode
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instanceVariableNames:'nodes'
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classVariableNames:''
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poolDictionaries:''
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category:'SmaCC-Scanner Generator'
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!
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SmaCCOrRENode comment:'SmaCCOrRENode is a SmaCCRegularExpressionNode that represents an alternative.
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Instance Variables:
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nodes <Collection of: SmaCCRegularExpressionNode> our possible choices'
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!
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!SmaCCOrRENode class methodsFor:'instance creation'!
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nodes: aCollection
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^(self new)
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nodes: aCollection;
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yourself
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! !
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!SmaCCOrRENode methodsFor:'accessing'!
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possibleMatchesSize
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^nodes inject: 0 into: [:sum :each | sum + each possibleMatchesSize]
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!
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| aScannerNode
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self action = aScannerNode action ifFalse: [^super | aScannerNode].
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nodes add: aScannerNode.
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^self
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! !
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!SmaCCOrRENode methodsFor:'copying'!
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postCopy
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super postCopy.
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nodes := nodes copy
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! !
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!SmaCCOrRENode methodsFor:'initialize-release'!
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nodes: aCollection
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nodes := aCollection
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! !
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!SmaCCOrRENode methodsFor:'printing'!
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printOn: aStream
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aStream nextPut: $(.
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nodes do: [:each | each printOn: aStream]
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separatedBy: [aStream nextPutAll: ' | '].
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aStream nextPut: $)
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! !
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!SmaCCOrRENode methodsFor:'private'!
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asNFAStartingWith: startNode
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| endNode |
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endNode := SmaCCNode new.
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endNode action: action.
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nodes do:
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[:each |
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| componentStart |
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componentStart := SmaCCNode new.
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startNode addEdgeTo: componentStart.
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(each asNFAStartingWith: componentStart) addEdgeTo: endNode].
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^endNode
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!
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possibleMatchesDo: aBlock on: aStream
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nodes do:
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[:each |
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| pos |
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pos := aStream position.
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each possibleMatchesDo: aBlock on: aStream.
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aStream position: pos]
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! !
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!SmaCCOrRENode class methodsFor:'documentation'!
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version
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^ '$Header: /opt/data/cvs/stx/goodies/smaCC/SmaCC__SmaCCOrRENode.st,v 1.1 2006-02-09 21:16:22 vranyj1 Exp $'
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!
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version_SVN
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^ '$Id$'
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1
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! !
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