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4
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1 |
"{ Package: 'stx:goodies/petitparser' }"
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0
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2 |
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3 |
PPListParser subclass:#PPChoiceParser
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4 |
instanceVariableNames:''
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5 |
classVariableNames:''
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6 |
poolDictionaries:''
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7 |
category:'PetitParser-Parsers'
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8 |
!
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9 |
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10 |
PPChoiceParser comment:'A parser that uses the first parser that succeeds.'
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11 |
!
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12 |
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13 |
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14 |
!PPChoiceParser methodsFor:'operations'!
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15 |
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4
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16 |
/ aRule
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0
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17 |
^ self copyWith: aRule
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18 |
! !
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19 |
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20 |
!PPChoiceParser methodsFor:'parsing'!
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21 |
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22 |
parseOn: aStream
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23 |
"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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24 |
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25 |
| element |
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26 |
1 to: parsers size do: [ :index |
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element := (parsers at: index)
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28 |
parseOn: aStream.
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29 |
element isPetitFailure
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30 |
ifFalse: [ ^ element ] ].
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31 |
^ element
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32 |
! !
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33 |
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34 |
!PPChoiceParser class methodsFor:'documentation'!
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35 |
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36 |
version_SVN
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4
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37 |
^ '$Id: PPChoiceParser.st,v 1.2 2012-01-13 11:22:50 cg Exp $'
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0
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38 |
! !
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