compiler/tests/PPLL1ExpressionGrammar.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Tue, 12 May 2015 01:24:03 +0100
changeset 459 4751c407bb40
child 461 5986bf6d7d60
permissions -rw-r--r--
Merged with PetitCompiler-JanKurs.20150510144201, PetitCompiler-Tests-JanKurs.20150510144201, PetitCompiler-Extras-Tests-JanKurs.20150510144201, PetitCompiler-Benchmarks-JanKurs.20150510144201 Name: PetitCompiler-JanKurs.20150510144201 Author: JanKurs Time: 10-05-2015, 04:42:29.192 PM UUID: 58a4786b-1182-4904-8b44-a13d3918f244 Name: PetitCompiler-Tests-JanKurs.20150510144201 Author: JanKurs Time: 10-05-2015, 04:32:12.870 PM UUID: 2a8fd41a-331b-4dcf-a7a3-752a50ce86e7 Name: PetitCompiler-Extras-Tests-JanKurs.20150510144201 Author: JanKurs Time: 10-05-2015, 04:59:25.308 PM UUID: ef43bd1a-be60-4e88-b749-8b635622c969 Name: PetitCompiler-Benchmarks-JanKurs.20150510144201 Author: JanKurs Time: 10-05-2015, 05:04:54.561 PM UUID: d8e764fd-016b-46e2-9fc1-17c38c18f0e5

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

"{ NameSpace: Smalltalk }"

PPCompositeParser subclass:#PPLL1ExpressionGrammar
	instanceVariableNames:'add prod term mul prim parens number mulPrime addPrime termPrime'
	classVariableNames:''
	poolDictionaries:''
	category:'PetitCompiler-Tests-ExpressionGrammar'
!

!PPLL1ExpressionGrammar methodsFor:'as yet unclassified'!

add
   ^ prod, addPrime optional
 	map: [ :_prod :_addPrime |
		_addPrime isNil 
			ifTrue: [ _prod  ]
			ifFalse: [ Array with: _prod withAll: _addPrime ]
		
	]
!

addPrime
    ^ $+ asParser trimmingToken , term
!

mul
   ^ prim, mulPrime optional
 	map: [ :_prim :_mulPrime |
		_mulPrime isNil 
			ifTrue: [ _prim  ]
			ifFalse: [ Array with: _prim withAll: _mulPrime ]
		
	]
!

mulPrime
   ^ $* asParser trimmingToken, prod
!

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

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

prim
   ^ parens / number
!

prod
   ^ mul
!

start
   ^ term end
!

term
    ^ prod, termPrime optional
 	map: [ :_prod :_termPrime |
        _termPrime isNil 
            ifTrue: [ _prod  ]
            ifFalse: [ Array with: _prod withAll: _termPrime ]
    ]	
!

termPrime
    ^ $+ asParser trimmingToken, term
! !