compiler/PPCAbstractCharacterNode.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Mon, 20 Apr 2015 11:23:20 +0100
changeset 432 fde2d5969fbb
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child 438 20598d7ce9fa
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PPCBenchmarkResource updated to work on Smalltalk/X ...as API of FileReference and Filename differ.
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"{ Package: 'stx:goodies/petitparser/compiler' }"
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"{ NameSpace: Smalltalk }"
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PPCNode subclass:#PPCAbstractCharacterNode
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	instanceVariableNames:'character'
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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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!PPCAbstractCharacterNode methodsFor:'accessing'!
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acceptsEpsilon
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	^ false
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!
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character
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	^ character
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!
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character: char
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	character := char
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!
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prefix
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	^ #char
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! !
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!PPCAbstractCharacterNode methodsFor:'analysis'!
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firstCharSet
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	^ PPCharSetPredicate on: [:e | e = character ]
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! !
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!PPCAbstractCharacterNode methodsFor:'comparison'!
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= anotherNode
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	super = anotherNode ifFalse: [ ^ false ].
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	^ character = anotherNode character.
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!
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hash
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	^ super hash bitXor: character hash
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! !
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!PPCAbstractCharacterNode methodsFor:'compiling'!
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body: compiler
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	| id |
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	character ppcPrintable ifTrue: [ 
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		id := character storeString 
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	] ifFalse: [ 
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		id := compiler idFor: character prefixed: #char.
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		compiler addConstant: (Character value: character asInteger) as: id .
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	].
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	compiler add: '(context peek == ', id, ')'.
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	compiler indent.
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	compiler add: 'ifFalse: [ self error: ''', character asInteger asString, ' expected'' at: context position ] '.
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	compiler add: 'ifTrue: [ context next ].'.
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	compiler dedent.
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!
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compileWith: compiler effect: effect id: id
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	self start: compiler id: id.
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	self body: compiler.
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 ^ self stop: compiler.
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!
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compileWith: compiler id: id
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	self start: compiler.
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	self body: compiler.
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 ^ compiler stopMethod.
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! !
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!PPCAbstractCharacterNode class methodsFor:'documentation'!
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version_HG
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    ^ '$Changeset: <not expanded> $'
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! !
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