PPLazyRepeatingParser.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Thu, 30 Jul 2015 08:37:37 +0100
changeset 510 869853decf31
parent 377 6112a403a52d
permissions -rw-r--r--
Tests refactoring - use generated test cases to make sure all posibilities are tested. Do not generate resource for all combinations, use PPCSetUpBeforeTearDownAfterResource instead that delegates parser compilation to the testcase itself (it calls it's #setUpBefore method).

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

PPLimitedRepeatingParser subclass:#PPLazyRepeatingParser
	instanceVariableNames:''
	classVariableNames:''
	poolDictionaries:''
	category:'PetitParser-Parsers'
!


!PPLazyRepeatingParser methodsFor:'parsing'!

parseOn: aPPContext
	| memento element elements |
	memento := aPPContext remember.
	elements := OrderedCollection new.
	[ elements size < min ] whileTrue: [
		(element := parser parseOn: aPPContext) isPetitFailure ifTrue: [
			aPPContext restore: memento.
			^ element ].
		elements addLast: element ].
	[ self matchesLimitOn: aPPContext ] whileFalse: [
		elements size < max ifFalse: [
			aPPContext restore: memento.
			^ PPFailure message: 'overflow' context: aPPContext at: memento position ].
		element := parser parseOn: aPPContext.
		element isPetitFailure ifTrue: [
			aPPContext restore: memento.
			^ element ].
		elements addLast: element ].
	^ elements asArray
! !

!PPLazyRepeatingParser class methodsFor:'documentation'!

version
    ^ '$Header: /cvs/stx/stx/goodies/petitparser/PPLazyRepeatingParser.st,v 1.1 2014-03-04 14:32:47 cg Exp $'
!

version_CVS
    ^ '$Header: /cvs/stx/stx/goodies/petitparser/PPLazyRepeatingParser.st,v 1.1 2014-03-04 14:32:47 cg Exp $'
! !