PPTrimmingParser.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Sun, 26 Oct 2014 01:03:31 +0000
changeset 391 553a5456963b
parent 377 6112a403a52d
child 411 06b96374dd10
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' }"

PPDelegateParser subclass:#PPTrimmingParser
	instanceVariableNames:'trimmer'
	classVariableNames:''
	poolDictionaries:''
	category:'PetitParser-Parsers'
!


!PPTrimmingParser class methodsFor:'instance creation'!

on: aParser trimmer: aTrimParser
	^ self new
		setParser: aParser;
		setTrimmer: aTrimParser;
		yourself
! !

!PPTrimmingParser methodsFor:'initialization'!

setTrimmer: aParser
	trimmer := aParser
! !

!PPTrimmingParser methodsFor:'operations'!

trim
	"There is no point in trimming more than once."

	^ self
! !

!PPTrimmingParser methodsFor:'parsing'!

parseOn: aPPContext
	| memento element |
	memento := aPPContext remember.
	[ (trimmer parseOn: aPPContext) isPetitFailure ]
		whileFalse.
	element := parser parseOn: aPPContext.
	element isPetitFailure ifTrue: [
		aPPContext restore: memento.
		^ element ].
	[ (trimmer parseOn: aPPContext) isPetitFailure ]
		whileFalse.
	^ element
! !

!PPTrimmingParser class methodsFor:'documentation'!

version
    ^ '$Header: /cvs/stx/stx/goodies/petitparser/PPTrimmingParser.st,v 1.3 2012-05-04 22:05:38 vrany Exp $'
!

version_CVS
    ^ '$Header: /cvs/stx/stx/goodies/petitparser/PPTrimmingParser.st,v 1.3 2012-05-04 22:05:38 vrany Exp $'
!

version_SVN
    ^ '§Id: PPTrimmingParser.st 2 2010-12-17 18:44:23Z vranyj1 §'
! !