compiler/PPCPlusNode.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Wed, 15 Apr 2015 11:28:09 +0100
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"{ Package: 'stx:goodies/petitparser/compiler' }"
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"{ NameSpace: Smalltalk }"
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PPCDelegateNode subclass:#PPCPlusNode
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	instanceVariableNames:''
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	classVariableNames:''
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	poolDictionaries:''
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	category:'PetitCompiler-Nodes'
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!
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!PPCPlusNode methodsFor:'as yet unclassified'!
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compileWith: compiler effect: effect id: id
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	compiler startMethod: id.
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	compiler addVariable: 'retval'.
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	compiler addVariable: 'element'.
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	compiler add: 'retval := OrderedCollection new.'.
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	compiler add: 'element := '.
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	compiler callOnLine: (child compileWith: compiler).
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	compiler add: 'error ifTrue: [ ^ self error: ''at least one occurence expected'' ].'.
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	compiler add: 'retval add: element.'.
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	compiler add: 'element := '.
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	compiler callOnLine: (child compileWith: compiler).
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	compiler add: '[ error ] whileFalse: ['.
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	compiler indent.
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	compiler add: 'retval add: element.'.
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	compiler add: 'element := '.
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	compiler callOnLine: (child compileWith: compiler).
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	compiler dedent.
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	compiler add: '].'.
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	compiler add: 'self clearError.'.
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	compiler add: '^ retval asArray'.
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 ^ compiler stopMethod.
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!
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followSets: aFollowDictionary firstSets: aFirstDictionary into: aSet suchThat: aBlock
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	| first |
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	super followSets: aFollowDictionary firstSets:  aFirstDictionary into: aSet suchThat: aBlock.
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	first := aFirstDictionary at: self.
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	(aFollowDictionary at: child) addAll: (first reject: [:each | each isNullable])
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!
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prefix
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	^ #plus
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! !
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!PPCPlusNode class methodsFor:'documentation'!
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version_HG
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    ^ '$Changeset: <not expanded> $'
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! !
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