Portability fixes
* do not use Object>>asString. Not all Smalltalks implement it.
* do not use Object>>name. Not all Smalltalks implement it.
* do not use Dictionary keysAndValuesRemove:. Not all Smalltalks implement it.
* do not use Class>>methods The semantics is different among Smalltalks.
Use `Class methodDictionary values` instead.
* do not modify dictionary in #at:ifAbsentPut: block!
"{ Package: 'stx:goodies/petitparser/compiler' }"
"{ NameSpace: Smalltalk }"
PPCDelegateNode subclass:#PPCStarNode
instanceVariableNames:''
classVariableNames:''
poolDictionaries:''
category:'PetitCompiler-Nodes'
!
!PPCStarNode methodsFor:'accessing'!
acceptsEpsilon
^ true
!
acceptsEpsilonOpenSet: set
^ true
!
defaultName
^ #star
! !
!PPCStarNode methodsFor:'analysis'!
isNullable
^ true
!
recognizedSentencesPrim
^ #()
! !
!PPCStarNode methodsFor:'first follow next'!
followSets: aFollowDictionary firstSets: aFirstDictionary into: aSet suchThat: aBlock
| first |
super followSets: aFollowDictionary firstSets: aFirstDictionary into: aSet suchThat: aBlock.
first := aFirstDictionary at: self.
self children do: [ :el |
(aFollowDictionary at: el) addAll: (first reject: [:each | each isNullable])
]
! !
!PPCStarNode methodsFor:'visiting'!
accept: visitor
^ visitor visitStarNode: self
! !