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"{ Package: 'stx:goodies/smaCC' }"
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"{ NameSpace: SmaCC }"
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SmaCCRegularExpressionNode subclass:#SmaCCSequenceRENode
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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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SmaCCSequenceRENode comment:'SmaCCSequenceRENode represents a regular expression that is made up of several other regular expressions concatenated together.
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Instance Variables:
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nodes <Collection of: SmaCCRegularExpressionNode> our children nodes in left-to-right order'
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!
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!SmaCCSequenceRENode 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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!SmaCCSequenceRENode methodsFor:'accessing'!
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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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possibleMatchesSize
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^nodes inject: 1 into: [:sum :each | sum * each possibleMatchesSize]
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! !
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!SmaCCSequenceRENode 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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!SmaCCSequenceRENode methodsFor:'initialize-release'!
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nodes: aCollection
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nodes := aCollection
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! !
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!SmaCCSequenceRENode methodsFor:'printing'!
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printOn: aStream
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nodes do: [:each | each printOn: aStream] separatedBy: [aStream space]
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! !
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!SmaCCSequenceRENode 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 inject: startNode into: [:sum :each | each asNFAStartingWith: sum])
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addEdgeTo: endNode.
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^endNode
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!
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possibleMatchesDo: aBlock on: aStream
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self
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possibleMatchesDo: aBlock
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on: aStream
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startingAt: 1
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!
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possibleMatchesDo: aBlock on: aStream startingAt: anInteger
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| node |
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node := nodes at: anInteger.
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nodes size = anInteger
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ifTrue: [node possibleMatchesDo: aBlock on: aStream]
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ifFalse:
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[node possibleMatchesDo:
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[self
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possibleMatchesDo: aBlock
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on: aStream
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startingAt: anInteger + 1]
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on: aStream]
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! !
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!SmaCCSequenceRENode class methodsFor:'documentation'!
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version
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^ '$Header: /opt/data/cvs/stx/goodies/smaCC/SmaCC__SmaCCSequenceRENode.st,v 1.1 2006-02-09 21:14:56 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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