compiler/PPTokenizingCompiledParser.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Mon, 02 Jul 2018 08:46:03 +0200
changeset 557 5ddba1e78795
parent 524 f6f68d32de73
permissions -rw-r--r--
Tagged Smalltalk/X 8.0.0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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"{ Package: 'stx:goodies/petitparser/compiler' }"
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"{ NameSpace: Smalltalk }"
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PPCompiledParser subclass:#PPTokenizingCompiledParser
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	instanceVariableNames:'scanner'
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	classVariableNames:''
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	poolDictionaries:''
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	category:'PetitCompiler-Parsers'
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!
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!PPTokenizingCompiledParser class methodsFor:'as yet unclassified'!
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acceptsLoggingOfCompilation
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    ^ true
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"	^ self == PPTokenizingCompiledParser"
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! !
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!PPTokenizingCompiledParser methodsFor:'accessing'!
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scanner
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    ^ scanner 
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! !
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!PPTokenizingCompiledParser methodsFor:'initialization'!
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initialize
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    super initialize.
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! !
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!PPTokenizingCompiledParser methodsFor:'tokenizing'!
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consumeWhitespace
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    "self shouldBeImplemented "
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!
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nextToken
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    self shouldBeImplemented 
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!
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parseOn: aPPContext
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    | retval |
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    context := aPPContext.
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    context compiledParser: self.
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    failure := PPFailure new message: nil; context: context; position: -1.
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    context noteFailure: failure.
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    error := false.
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    scanner := (self class classVarNamed: #scannerClass) new.
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    scanner stream: aPPContext.
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    [ 
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        scanner scan_consumeWhitespace.
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        scanner position: context position.
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        retval := self perform: startSymbol.
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    ] on: PPCScannerError do: [ :e |
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        "TODO JK: fix reporting of position?"
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        retval := PPFailure message: e description at: 0.
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    ].
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    (retval isPetitFailure) ifTrue: [ aPPContext noteFailure: failure ].
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    error ifTrue: [ aPPContext noteFailure: failure. retval := failure ].
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"	aPPContext position: context position."
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    ^ retval
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! !
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