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"{ Package: 'squeak:petitparser' }"
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PPListParser subclass:#PPChoiceParser
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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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PPChoiceParser comment:'A parser that uses the first parser that succeeds.'
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!
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!PPChoiceParser methodsFor:'operations'!
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/ aRule
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^ self copyWith: aRule
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! !
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!PPChoiceParser methodsFor:'parsing'!
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parseOn: aStream
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"This is optimized code that avoids unnecessary block activations, do not change. When all choices fail, the last failure is answered."
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| element |
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1 to: parsers size do: [ :index |
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element := (parsers at: index)
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parseOn: aStream.
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element isPetitFailure
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ifFalse: [ ^ element ] ].
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^ element
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! !
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!PPChoiceParser class methodsFor:'documentation'!
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version_SVN
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^ '$Id: PPChoiceParser.st,v 1.1 2011-08-18 18:56:17 cg Exp $'
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! !
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