Updated to PetitCompiler-JanKurs.100, PetitCompiler-Tests-JanKurs.44 and PetitCompiler-Benchmarks-JanKurs.4
Name: PetitCompiler-JanKurs.100
Author: JanKurs
Time: 30-04-2015, 10:48:52.165 AM
UUID: 80196870-5921-46d9-ac20-a43bf5c2f3c2
Name: PetitCompiler-Tests-JanKurs.44
Author: JanKurs
Time: 30-04-2015, 10:49:22.489 AM
UUID: 348c02e8-18ce-48f6-885d-fcff4516a298
Name: PetitCompiler-Benchmarks-JanKurs.4
Author: JanKurs
Time: 30-04-2015, 10:58:44.890 AM
UUID: 18cadb42-f9ef-45fb-82e9-8469ade56c8b
"{ Package: 'stx:goodies/petitparser/compiler' }"
"{ NameSpace: Smalltalk }"
PPCRewritingVisitor subclass:#PPCMergingVisitor
instanceVariableNames:'nodeSet'
classVariableNames:''
poolDictionaries:''
category:'PetitCompiler-Visitors'
!
!PPCMergingVisitor methodsFor:'as yet unclassified'!
equivalentNode: node
^ nodeSet detect: [ :e | e = node ]
!
hasEquivalentNode: node
^ nodeSet includes: node
!
initialize
super initialize.
nodeSet := Set new
!
store: node
self assert: (self hasEquivalentNode: node) not.
nodeSet add: node
!
visitNode: node
super visitNode: node.
(self hasEquivalentNode: node) ifTrue: [
self change.
^ self equivalentNode: node
] ifFalse: [
self store: node
].
^ node
! !