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"{ Package: 'stx:goodies/petitparser/devtools' }"
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PPParserVisitor subclass:#PPPrinter
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instanceVariableNames:'stream root'
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classVariableNames:''
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poolDictionaries:''
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category:'PetitParser-Utils'
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!
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!PPPrinter class methodsFor:'instance creation'!
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new
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"return an initialized instance"
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^ self basicNew initialize.
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! !
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!PPPrinter class methodsFor:'printing'!
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print: parser
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^self new print: parser.
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"Created: / 11-01-2013 / 09:51:05 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!PPPrinter methodsFor:'accessing'!
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stream
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^ stream
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!
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stream:something
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stream := something.
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! !
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!PPPrinter methodsFor:'initialization'!
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initialize
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stream := String new writeStream.
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root := nil.
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"Modified: / 11-01-2013 / 09:21:44 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!PPPrinter methodsFor:'printing'!
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print: parser
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self visit: parser.
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^stream contents
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"Created: / 11-01-2013 / 09:51:26 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!PPPrinter methodsFor:'visiting'!
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visit:anObject
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"visit anObject (visitor pattern).
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The object should call back one of my visitXXXX methods."
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anObject name notNil ifTrue:[
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stream nextPutAll: anObject name.
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root isNil ifTrue:[
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stream cr; cr; tab.
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stream nextPut: $^.
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root := anObject.
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anObject acceptVisitor:self.
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].
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^self
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].
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stream nextPut:$(.
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anObject acceptVisitor:self.
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stream nextPut:$)
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"Created: / 11-01-2013 / 09:17:06 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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visitPPChoiceParser:anObject
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"dispatched back from the visited pPChoiceParser-object (visitor pattern)"
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"fall back to general object-case - please change as required"
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root == anObject ifTrue:[stream space].
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anObject children
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do: [:parser|self visit: parser. root == anObject ifTrue:[stream cr; tab] ifFalse:[stream space]]
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separatedBy:[stream nextPutAll: '/ '].
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"Created: / 11-01-2013 / 09:18:59 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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visitPPEpsilonParser:anObject
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stream nextPutAll: 'nil asParser'
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"Created: / 11-01-2013 / 09:34:14 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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visitPPLiteralObjectParser:anObject
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self visitPPLiteralParser: anObject
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"Created: / 11-01-2013 / 09:29:29 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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visitPPLiteralParser:anObject
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anObject literal storeOn: stream.
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stream nextPutAll: ' asParser'
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"Created: / 11-01-2013 / 09:29:50 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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visitPPLiteralSequenceParser:anObject
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self visitPPLiteralParser: anObject
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"Created: / 11-01-2013 / 09:29:18 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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visitPPOptionalParser:anObject
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self visit: anObject children anElement.
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stream nextPutAll: ' optional'.
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"Created: / 11-01-2013 / 09:27:32 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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visitPPPredicateObjectParser:anObject
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stream nextPutAll: '(self error: ''Cannot print predicate object parsers'')'
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"Created: / 11-01-2013 / 09:32:17 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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visitPPRepeatingParser:anObject
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self visit: anObject children anElement.
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(anObject min == 0 and:[anObject max = SmallInteger maxVal]) ifTrue:[
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stream nextPutAll:' star'.
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^self.
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].
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(anObject min == 1 and:[anObject max = SmallInteger maxVal]) ifTrue:[
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stream nextPutAll:' plus'.
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^self.
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].
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stream
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nextPutAll:' min: ';
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nextPutAll: anObject min printString;
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nextPutAll:' max: ';
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nextPutAll: anObject max printString
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"Created: / 11-01-2013 / 09:27:01 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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visitPPSequenceParser:anObject
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"dispatched back from the visited pPSequenceParser-object (visitor pattern)"
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anObject children
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do: [:parser|self visit: parser]
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separatedBy:[stream nextPutAll: ' , '].
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"Created: / 11-01-2013 / 09:18:32 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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visitPPUnresolvedParser:anObject
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stream nextPutAll: '(self error: ''Unresolved'')'
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"Created: / 11-01-2013 / 09:33:35 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!PPPrinter class methodsFor:'documentation'!
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version
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^ '$Header: /cvs/stx/stx/goodies/petitparser/devtools/PPPrinter.st,v 1.1 2013-01-11 09:57:40 vrany Exp $'
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!
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version_CVS
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^ '$Header: /cvs/stx/stx/goodies/petitparser/devtools/PPPrinter.st,v 1.1 2013-01-11 09:57:40 vrany Exp $'
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! !
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