Fixed CI scripts on Windows
For an unknown reason, unzip on Windows reports status code 50
(presumably "the disk is (or was) full during extraction.") even
if there's plenty of space. To workaround this, simply ignore
status code 50 on Windows. Sigh.
"{ Package: 'stx:goodies/petitparser/compiler' }"
"{ NameSpace: Smalltalk }"
PPCRewritingVisitor subclass:#PPCLL1Visitor
instanceVariableNames:''
classVariableNames:''
poolDictionaries:''
category:'PetitCompiler-Visitors'
!
!PPCLL1Visitor methodsFor:'as yet unclassified'!
isDeterministicChoice: node
| firsts |
firsts := OrderedCollection new.
node children do: [ :child |
(self startsWithToken: child) ifFalse: [ ^ false ].
firsts addAll: child firstSetWithTokens.
].
(firsts asIdentitySet size = firsts size) ifFalse: [ ^ false ].
firsts do:[:e1 |
firsts do:[:e2 |
e1 == e2 ifFalse: [
(e1 overlapsWith: e2) ifTrue: [ ^ false ] ].
].
].
^ true
"Modified: / 10-05-2015 / 07:27:05 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!
startsWithToken: node
| firstSet terminal total |
total := 0.
firstSet := node firstSetWithTokens.
terminal := (firstSet detect: [ :e | e isTerminal ] ifNone: [ nil ]).
terminal isNil ifFalse: [ ^ false ].
^ true
!
visitChoiceNode: node
super visitChoiceNode: node.
(self isDeterministicChoice: node) ifTrue: [
self change.
^ PPCDeterministicChoiceNode new
children: node children;
name: node name;
firstFollowCache: node firstFollowCache;
yourself
].
^ node
! !