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' }"
PPChoiceParser subclass:#PPLimitedChoiceParser
instanceVariableNames:'limit'
classVariableNames:''
poolDictionaries:''
category:'PetitParser-Parsers'
!
!PPLimitedChoiceParser methodsFor:'accessing'!
limit
^ limit
!
limit: anObject
limit := anObject
! !
!PPLimitedChoiceParser methodsFor:'as yet unclassified'!
// aRule
^ self copyWith: aRule
!
initialize
limit := nil asParser
!
parseOn: aPPContext
"This is optimized code that avoids unnecessary block activations, do not change. When all choices fail, the last failure is answered."
| element limitResult memento |
"self halt."
1 to: parsers size do: [ :index |
memento := aPPContext remember.
element := (parsers at: index)
parseOn: aPPContext.
(element isPetitFailure not) ifTrue: [
"check limit"
limitResult := limit parseOn: aPPContext.
limitResult isPetitFailure ifTrue: [
element := PPFailure message: 'limit failed' at: aPPContext position .
aPPContext restore: memento.
] ifFalse: [ ^ element ].
].
].
^ element
! !