PPTrimmingParser.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Fri, 03 Oct 2014 02:33:08 +0100
changeset 377 6112a403a52d
parent 39 743bee9b3ed1
child 411 06b96374dd10
permissions -rw-r--r--
Updated to latest version from Moose repository. Name: PetitParser-JanKurs.250 Author: JanKurs Time: 01-10-2014, 04:44:04 AM UUID: c46eea20-51a0-4deb-8fd5-8cb99810a8b4 Repository: http://smalltalkhub.com/mc/Moose/PetitParser/main Name: PetitTests-JanKurs.60 Author: JanKurs Time: 29-09-2014, 11:48:10 AM UUID: 28fd2e65-c287-4f73-b71e-5b6bb25bebaa Repository: http://smalltalkhub.com/mc/Moose/PetitParser/main

"{ 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 §'
! !