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"{ Package: 'stx:goodies/petitparser/analyzer' }"
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PPProcessor subclass:#PPRewriter
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instanceVariableNames:'changed'
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classVariableNames:''
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poolDictionaries:''
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category:'PetitAnalyzer-Core'
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!
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!PPRewriter methodsFor:'accessing'!
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replace: aSearchParser with: aReplaceParser
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self replace: aSearchParser with: aReplaceParser when: [ :node | true ]
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!
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replace: aSearchParser with: aReplaceParser when: aValidationBlock
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self addRule: (PPParserReplaceRule searchFor: aSearchParser replaceWith: aReplaceParser when: aValidationBlock)
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!
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replace: aSearchParser withValueFrom: aReplaceBlock
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self replace: aSearchParser withValueFrom: aReplaceBlock when: [ :node | true ]
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!
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replace: aSearchParser withValueFrom: aReplaceBlock when: aValidationBlock
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self addRule: (PPBlockReplaceRule searchFor: aSearchParser replaceWith: aReplaceBlock when: aValidationBlock)
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! !
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!PPRewriter methodsFor:'initialization'!
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initialize
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super initialize.
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changed := false
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! !
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!PPRewriter methodsFor:'public'!
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execute: aParser
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"Perform the replace rules of the receiver on aParser, answer the resulting parser."
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| previous result |
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previous := context.
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changed := false.
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context := Dictionary new.
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result := aParser transform: [ :each |
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| transformed |
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transformed := self performRulesOn: each.
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transformed isNil
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ifTrue: [ each ]
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ifFalse: [ changed := true. transformed ] ].
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context := previous.
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^ result
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! !
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!PPRewriter methodsFor:'testing'!
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hasChanged
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"Answer if the last operation has changed anything."
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^ changed
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! !
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!PPRewriter class methodsFor:'documentation'!
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version
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^ '$Header: /cvs/stx/stx/goodies/petitparser/analyzer/PPRewriter.st,v 1.1 2014-03-04 15:41:58 cg Exp $'
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!
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version_CVS
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^ '$Header: /cvs/stx/stx/goodies/petitparser/analyzer/PPRewriter.st,v 1.1 2014-03-04 15:41:58 cg Exp $'
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! !
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