compiler/tests/PPExpressionGrammar.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Thu, 30 Apr 2015 23:43:14 +0200
changeset 438 20598d7ce9fa
child 452 9f4558b3be66
permissions -rw-r--r--
Updated to PetitCompiler-JanKurs.100, PetitCompiler-Tests-JanKurs.44 and PetitCompiler-Benchmarks-JanKurs.4 Name: PetitCompiler-JanKurs.100 Author: JanKurs Time: 30-04-2015, 10:48:52.165 AM UUID: 80196870-5921-46d9-ac20-a43bf5c2f3c2 Name: PetitCompiler-Tests-JanKurs.44 Author: JanKurs Time: 30-04-2015, 10:49:22.489 AM UUID: 348c02e8-18ce-48f6-885d-fcff4516a298 Name: PetitCompiler-Benchmarks-JanKurs.4 Author: JanKurs Time: 30-04-2015, 10:58:44.890 AM UUID: 18cadb42-f9ef-45fb-82e9-8469ade56c8b

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

"{ NameSpace: Smalltalk }"

PPCompositeParser subclass:#PPExpressionGrammar
	instanceVariableNames:'add prod term mul prim parens number'
	classVariableNames:''
	poolDictionaries:''
	category:'PetitCompiler-Tests-ExpressionGrammar'
!

!PPExpressionGrammar methodsFor:'as yet unclassified'!

add
   ^ prod , $+ asParser trimmingToken , term
!

mul
   ^ prim , $* asParser trimmingToken , prod
!

number
   ^ #digit asParser plus trimmingToken ==> [ :token | token inputValue asNumber ]
!

parens
   ^ $( asParser trim, term , $) asParser trim
!

prim
   ^ parens / number
!

prod
   ^ mul / prim
!

start
   ^ term end
!

term
   ^ add / prod
! !