compiler/PPCNotNode.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Sun, 26 Oct 2014 01:03:31 +0000
changeset 391 553a5456963b
child 392 9b297f0d949c
permissions -rw-r--r--
Ported PetitCompiler-(Tests). Name: PetitCompiler-JanKurs.41 Author: JanKurs Time: 25-10-2014, 03:30:28 AM UUID: 105186d1-1187-4ca6-8d66-3d2d47def4d3 Repository: http://smalltalkhub.com/mc/JanKurs/PetitParser/main Name: PetitCompiler-Tests-JanKurs.4 Author: JanKurs Time: 25-10-2014, 03:30:58 AM UUID: 3e798fad-d5f6-4881-a583-f0bbffe27869 Repository: http://smalltalkhub.com/mc/JanKurs/PetitParser/main In addition, fixed some problems to make it compilable under Smalltalk/X: * Fixed PPCTokenNode>>initialize - there's no children instvar, it's initialization removed. * Fixed PPCContextMemento>>propertyAt:ifAbsent: - removed return-in-return, not compilable under Smalltalk/X (C issues) * Fixed PPCContextMemento>>hash - there's no stream instvar, access to it removed. * Fixed PPCAbstractCharacterNode>>compileWith:effect:id: - removed dot after method selector (stc does not like it)

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

PPCDelegateNode subclass:#PPCNotNode
	instanceVariableNames:''
	classVariableNames:''
	poolDictionaries:''
	category:'PetitCompiler-Nodes'
!

PPCNotNode comment:''
!

!PPCNotNode methodsFor:'accessing'!

prefix
	^ #not
! !

!PPCNotNode methodsFor:'analysis'!

isFirstSetTerminal
	^ false
! !

!PPCNotNode methodsFor:'compiling'!

compileWith: compiler effect: effect id: id

	compiler startMethod: id.
	compiler addVariable: 'memento'.
	compiler add: (compiler smartRemember: child).
	
	compiler startTokenMode.
	compiler call: (child compileWith: compiler).
	compiler stopTokenMode.
	compiler add: (compiler smartRestore: child).

	compiler add: '^ error ifFalse: [ self error ] ifTrue: [ self clearError. nil ]'.
 ^ compiler stopMethod.
! !

!PPCNotNode methodsFor:'optimizing'!

optimize: params 
	(self rewrite: params) ifTrue: [ 
		^ true.
	].
	^ super optimize: params.
!

rewrite: changeStatus
	(child isKindOf: PPCAbstractLiteralNode) ifTrue: [  
		changeStatus change.
		^ PPCNotLiteralNode new
			name: self name;
			literal: self child literal;
			yourself
	]. 

	(child isKindOf: PPCMessagePredicateNode) ifTrue: [  
		changeStatus change.
		^ PPCNotMessagePredicateNode new
			name: self name;
			message: child message;
			yourself
	].

	(child isKindOf: PPCCharSetPredicateNode) ifTrue: [  
		changeStatus change.
		^ PPCNotCharSetPredicateNode new
			name: self name;
			predicate: child predicate;
			yourself
	] 
! !