compiler/tests/extras/PPLL1ExpressionGrammar.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Thu, 21 May 2015 14:12:22 +0100
changeset 464 f6d77fee9811
child 469 8dc4eb06316e
child 502 1e45d3c96ec5
permissions -rw-r--r--
Updated to PetitCompiler-JanKurs.118, PetitCompiler-Tests-JanKurs.46, PetitCompiler-Extras-Tests-JanKurs.11, and PetitCompiler-Benchmarks-JanKurs.11 Name: PetitCompiler-JanKurs.118 Author: JanKurs Time: 13-05-2015, 03:59:01.292 PM UUID: 4a8ccd94-3131-4cc7-9098-528f8e5ea0b5 Name: PetitCompiler-Tests-JanKurs.46 Author: JanKurs Time: 04-05-2015, 04:25:06.162 PM UUID: 9f4cf8b7-876e-4a13-9579-b833f016db66 Name: PetitCompiler-Extras-Tests-JanKurs.11 Author: JanKurs Time: 13-05-2015, 04:27:27.940 PM UUID: e9f30c31-fbd0-4e96-ad2a-868f88d20ea8 Name: PetitCompiler-Benchmarks-JanKurs.11 Author: JanKurs Time: 13-05-2015, 02:21:49.932 PM UUID: 6a23fd1e-a86f-46db-8221-cc41b778d32c

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

"{ NameSpace: Smalltalk }"

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


!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
! !

!PPLL1ExpressionGrammar class methodsFor:'documentation'!

version_HG

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