compiler/PPCStarCharSetPredicateNode.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Sun, 26 Oct 2014 01:03:31 +0000
changeset 391 553a5456963b
child 392 9b297f0d949c
permissions -rw-r--r--
Ported PetitCompiler-(Tests). Name: PetitCompiler-JanKurs.41 Author: JanKurs Time: 25-10-2014, 03:30:28 AM UUID: 105186d1-1187-4ca6-8d66-3d2d47def4d3 Repository: http://smalltalkhub.com/mc/JanKurs/PetitParser/main Name: PetitCompiler-Tests-JanKurs.4 Author: JanKurs Time: 25-10-2014, 03:30:58 AM UUID: 3e798fad-d5f6-4881-a583-f0bbffe27869 Repository: http://smalltalkhub.com/mc/JanKurs/PetitParser/main In addition, fixed some problems to make it compilable under Smalltalk/X: * Fixed PPCTokenNode>>initialize - there's no children instvar, it's initialization removed. * Fixed PPCContextMemento>>propertyAt:ifAbsent: - removed return-in-return, not compilable under Smalltalk/X (C issues) * Fixed PPCContextMemento>>hash - there's no stream instvar, access to it removed. * Fixed PPCAbstractCharacterNode>>compileWith:effect:id: - removed dot after method selector (stc does not like it)

"{ Package: 'stx:goodies/petitparser/compiler' }"

PPCNode subclass:#PPCStarCharSetPredicateNode
	instanceVariableNames:'predicate'
	classVariableNames:''
	poolDictionaries:''
	category:'PetitCompiler-Nodes'
!

PPCStarCharSetPredicateNode comment:''
!

!PPCStarCharSetPredicateNode methodsFor:'accessing'!

acceptsEpsilon
	^ true
!

compileWith: compiler effect: effect id: id
	| classification classificationId |
	
	compiler startMethod: id.
	classification := self extendClassification: predicate classification.
	classificationId := compiler idFor: classification prefixed: #classification.
	compiler addConstant: classification as: classificationId.
	
	compiler addVariable: 'retval'.
	compiler add: 'retval := OrderedCollection new.'.	
	compiler add: '[ ', classificationId, ' at: context peek asInteger ] whileTrue: ['.
	compiler indent.
	compiler add: ' retval add: context next.'.
	compiler dedent.
	compiler add: '].'.
   compiler add: '^ retval asArray'.
 ^ compiler stopMethod.
!

extendClassification: classification
	^ (classification asOrderedCollection addLast: false; yourself) asArray
!

firstCharParser
	^ PPPredicateObjectParser on: predicate message: 'predicate expected'.
!

predicate
	
	^ predicate
!

predicate: anObject
	
	predicate := anObject
!

prefix
	^ #starPredicate
! !