compiler/PPCStarCharSetPredicateNode.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Mon, 24 Nov 2014 00:09:23 +0000
changeset 421 7e08b31e0dae
parent 414 0eaf09920532
child 422 116d2b2af905
permissions -rw-r--r--
Merged JK's version from Monticello Name: PetitParser-JanKurs.260 Author: JanKurs Time: 17-11-2014, 12:09:05.490 PM UUID: 07411cef-ef69-40db-9d93-d4018a9b34ef Name: PetitTests-JanKurs.65 Author: JanKurs Time: 17-11-2014, 12:09:04.530 PM UUID: f98d613f-f4ce-4e0e-a7e9-310ee7c7e7a6 Name: PetitSmalltalk-JanKurs.78 Author: JanKurs Time: 14-11-2014, 05:05:07.765 PM UUID: 3d68330d-44d5-46c3-9705-97f627b3edbc Name: PetitCompiler-JanKurs.71 Author: JanKurs Time: 18-11-2014, 09:48:35.425 AM UUID: 06352c33-3c76-4382-8536-0cc48e225117 Name: PetitCompiler-Tests-JanKurs.21 Author: JanKurs Time: 17-11-2014, 05:51:53.134 PM UUID: 8d6c0799-14e7-4871-8d91-8b0f9886db83 Name: PetitCompiler-Benchmarks-JanKurs.2 Author: JanKurs Time: 17-11-2014, 05:51:07.887 PM UUID: d5e3a980-7871-487a-a232-e3ca93fc2483

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

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

!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'.
!

firstCharSet
	^ PPCharSetPredicate on: predicate 	
!

predicate
	
	^ predicate
!

predicate: anObject
	
	predicate := anObject
!

prefix
	^ #starPredicate
!

rewrite: changeStatus
	"Nothing TODO"
! !

!PPCStarCharSetPredicateNode methodsFor:'comparing'!

= anotherNode
	super = anotherNode ifFalse: [ ^ false ].
	^ predicate = anotherNode predicate.
!

hash
	^ super hash bitXor: predicate hash
! !