compiler/PPCStarMessagePredicateNode.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Mon, 24 Nov 2014 00:09:23 +0000
changeset 421 7e08b31e0dae
parent 392 9b297f0d949c
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:#PPCStarMessagePredicateNode
	instanceVariableNames:'message'
	classVariableNames:''
	poolDictionaries:''
	category:'PetitCompiler-Nodes'
!

!PPCStarMessagePredicateNode methodsFor:'accessing'!

acceptsEpsilon
	^ true
!

firstCharSet
	^ PPCharSetPredicate on: [:char | char perform: message ] 	
!

message
	
	^ message
!

message: anObject
	
	message := anObject
!

prefix
	^ #starPredicate
!

rewrite: changeStatus
	"Nothing TODO"
! !

!PPCStarMessagePredicateNode methodsFor:'as yet unclassified'!

compileWith: compiler effect: effect id: id
	compiler startMethod: id.
	compiler addVariable: 'retval'.
	compiler add: 'retval := OrderedCollection new.'.	
	compiler add: '[ context peek ', message, ' ] whileTrue: ['.
	compiler indent.
	compiler add: ' retval add: context next'.
	compiler dedent.
	compiler add: '].'.
	compiler add: '^ retval asArray'.
 ^ compiler stopMethod.
!

compileWith_old: compiler effect: effect id: id
	compiler startMethod: id.
	compiler addVariable: 'retval'.
	compiler add: 'retval := OrderedCollection new.'.	
	compiler add: '[ context atEnd ] whileFalse: ['.
	compiler indent.
	compiler add: '(context uncheckedPeek ', message,')'.
	compiler indent.
	compiler add: ' ifFalse: [ ^ retval asArray ].'.
	compiler dedent.
	compiler add: ' retval add: context next'.
	compiler dedent.
	compiler add: '].'.
	compiler add: '^ retval asArray'.
 ^ compiler stopMethod.
! !

!PPCStarMessagePredicateNode methodsFor:'comparing'!

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

hash
	^ super hash bitXor: message hash
! !

!PPCStarMessagePredicateNode methodsFor:'optimizing'!

asFast
	^ PPCTokenStarMessagePredicateNode new
		name: name;
		message: message;
		child: child;
		yourself
! !