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

"{ NameSpace: Smalltalk }"

PPCNode subclass:#PPCUnknownNode
	instanceVariableNames:'parser'
	classVariableNames:''
	poolDictionaries:''
	category:'PetitCompiler-Nodes'
!


!PPCUnknownNode class methodsFor:'as yet unclassified'!

new
	^ self basicNew initialize
! !

!PPCUnknownNode methodsFor:'accessing'!

acceptsEpsilon
	^ parser acceptsEpsilon
!

acceptsEpsilonOpenSet: aSet
	^ parser acceptsEpsilonOpenSet: aSet
!

children
	^ parser children
!

isContextFreePrim
	^ parser isContextFreePrim
!

isNullable
	^ parser isNullable
!

parser
	
	^ parser
!

parser: anObject
	
	parser := anObject
!

prefix
	^ #parser
! !

!PPCUnknownNode methodsFor:'as yet unclassified'!

firstCharSet
	^ parser firstCharSet
! !

!PPCUnknownNode methodsFor:'comparison'!

= anotherNode
	super = anotherNode ifFalse: [ ^ false ].
	^ parser = anotherNode parser.
!

hash
	^ super hash bitXor: parser hash
! !

!PPCUnknownNode methodsFor:'compiling'!

compileWith: compiler effect: effect id: id
	| compiledChild compiledParser |
	compiler startMethod: id.
	
	compiledParser := parser copy.
	"Compile all the children and call compiled version of them instead of the original one"
	compiledParser children do: [ :child | 
		compiledChild := child compileWith: compiler.
		compiledParser replace: child with: compiledChild bridge.
	].
	
	compiler addConstant: compiledParser as: id. 
	
	compiler addVariable: 'retval'.
	compiler add: 'self clearError.'.
	compiler add: '(retval := ', id, ' parseOn: context) isPetitFailure'.
	compiler indent.
	compiler add: ' ifTrue: [self error: retval message at: retval position ].'.
	compiler dedent.
	compiler add: 'error := retval isPetitFailure.'.
	compiler add: '^ retval'.
 ^ compiler stopMethod.
! !

!PPCUnknownNode methodsFor:'transformation'!

replace: node with: anotherNode
	parser replace: node with: anotherNode
! !

!PPCUnknownNode class methodsFor:'documentation'!

version_HG

    ^ '$Changeset: <not expanded> $'
! !