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"{ Package: 'squeak:petitparser' }"
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PPDelegateParser subclass:#PPNotParser
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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category:'PetitParser-Parsers'
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!
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PPNotParser comment:'The not-predicate, a parser that succeeds whenever its delegate does not, but consumes no input [Parr 1994, 1995].'
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!
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!PPNotParser methodsFor:'parsing'!
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parseOn: aStream
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| element position |
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position := aStream position.
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element := parser parseOn: aStream.
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aStream position: position.
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^ element isPetitFailure
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ifFalse: [ PPFailure message: '' at: aStream position ]
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! !
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!PPNotParser class methodsFor:'documentation'!
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version_SVN
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^ '$Id: PPNotParser.st,v 1.1 2011-08-18 18:56:17 cg Exp $'
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! !
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