compiler/PPCAbstractPredicateNode.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Fri, 24 Jul 2015 15:37:23 +0100
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Merge
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"{ Package: 'stx:goodies/petitparser/compiler' }"
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"{ NameSpace: Smalltalk }"
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PPCNode subclass:#PPCAbstractPredicateNode
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	instanceVariableNames:'predicate'
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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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!PPCAbstractPredicateNode methodsFor:'accessing'!
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predicate
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    ^ predicate
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!
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predicate: anObject
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    predicate := anObject
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!
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prefix
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    ^ #predicate
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! !
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!PPCAbstractPredicateNode methodsFor:'analysis'!
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acceptsEpsilon
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    ^ false
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!
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firstCharSet
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    ^ PPCharSetPredicate on: predicate
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! !
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!PPCAbstractPredicateNode methodsFor:'comparing'!
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= anotherNode
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    super = anotherNode ifFalse: [ ^ false ].
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    ^ predicate = anotherNode predicate.
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!
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hash
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    ^ super hash bitXor: predicate hash
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!
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recognizedSentencesPrim
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    | retval |
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    retval := OrderedCollection new.
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    "TODO JK: Works only for ASCII :("
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    1 to: 255 do: [ :i |
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        (predicate value: (Character codePoint: i)) ifTrue: [ 
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            retval add: (Character codePoint: i) asString 
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        ]
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    ].
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    ^ retval
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! !
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!PPCAbstractPredicateNode methodsFor:'compiling'!
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extendClassification: classification
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    ^ (classification asOrderedCollection addLast: false; yourself) asArray
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! !
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