compiler/PPCOptionalNode.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Mon, 02 Jul 2018 08:46:03 +0200
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permissions -rw-r--r--
Tagged Smalltalk/X 8.0.0
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"{ Package: 'stx:goodies/petitparser/compiler' }"
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"{ NameSpace: Smalltalk }"
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PPCDelegateNode subclass:#PPCOptionalNode
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	instanceVariableNames:''
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	classVariableNames:''
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	poolDictionaries:''
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	category:'PetitCompiler-Nodes'
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!
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!PPCOptionalNode methodsFor:'accessing'!
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defaultName
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    ^ #opt
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! !
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!PPCOptionalNode methodsFor:'analysis'!
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acceptsEpsilon
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    ^ true
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!
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acceptsEpsilonOpenSet: set
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    ^ true
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!
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isNullable
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    ^ true
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! !
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!PPCOptionalNode methodsFor:'visiting'!
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accept: visitor
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    ^ visitor visitOptionalNode: self
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! !
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