compiler/PPTokenizingCompiledParser.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Mon, 24 Aug 2015 15:34:14 +0100
changeset 524 f6f68d32de73
parent 515 b5316ef15274
permissions -rw-r--r--
Merged in PetitCompiler-JanVrany.170, PetitCompiler-Tests-JanKurs.116, PetitCompiler-Extras-Tests-JanKurs.29, PetitCompiler-Benchmarks-JanKurs.19 Name: PetitCompiler-JanVrany.170 Author: JanVrany Time: 24-08-2015, 03:19:51.340 PM UUID: c20a744f-3b41-4aaa-bb8a-71ce74a2a952 Name: PetitCompiler-Tests-JanKurs.116 Author: JanKurs Time: 24-08-2015, 11:37:54.332 AM UUID: 549e0927-358a-4a1b-8270-050ccfcb4217 Name: PetitCompiler-Extras-Tests-JanKurs.29 Author: JanKurs Time: 24-08-2015, 11:36:52.503 AM UUID: ea1dbb67-f884-4237-8f34-adb0677c0954 Name: PetitCompiler-Benchmarks-JanKurs.19 Author: JanKurs Time: 24-08-2015, 11:48:47.045 AM UUID: 1c342fdb-8ddd-4104-9c47-a8f589c51694

"{ Package: 'stx:goodies/petitparser/compiler' }"

"{ NameSpace: Smalltalk }"

PPCompiledParser subclass:#PPTokenizingCompiledParser
	instanceVariableNames:'scanner'
	classVariableNames:''
	poolDictionaries:''
	category:'PetitCompiler-Parsers'
!

!PPTokenizingCompiledParser class methodsFor:'as yet unclassified'!

acceptsLoggingOfCompilation
    ^ true
"	^ self == PPTokenizingCompiledParser"
! !

!PPTokenizingCompiledParser methodsFor:'accessing'!

scanner
    ^ scanner 
! !

!PPTokenizingCompiledParser methodsFor:'initialization'!

initialize
    super initialize.
    
! !

!PPTokenizingCompiledParser methodsFor:'tokenizing'!

consumeWhitespace
    "self shouldBeImplemented "
!

nextToken
    self shouldBeImplemented 
!

parseOn: aPPContext
    | retval |

    context := aPPContext.
    context compiledParser: self.
    failure := PPFailure new message: nil; context: context; position: -1.
    context noteFailure: failure.
    error := false.
    scanner := (self class classVarNamed: #scannerClass) new.
    scanner stream: aPPContext.

    [ 
        scanner scan_consumeWhitespace.
        scanner position: context position.
        
        retval := self perform: startSymbol.
    ] on: PPCScannerError do: [ :e |
        "TODO JK: fix reporting of position?"
        retval := PPFailure message: e description at: 0.
    ].

    (retval isPetitFailure) ifTrue: [ aPPContext noteFailure: failure ].
    error ifTrue: [ aPPContext noteFailure: failure. retval := failure ].
    
"	aPPContext position: context position."
    ^ retval
! !