Portability: fixes for Smalltalk/X
* Do not use detect:ifFound: - not present in Smalltalk/X
* Removed leftover debugging code (Halt if:, ...)
* Do not use `aClass methods`, use `aClass methodDictionary values`
* Do not use #allPairsDo; - not present in Smalltalk/X
* Do not use #crShow: - not present in Smalltalk/X
* On Smalltalk?X use Filename - there's no FileReference in Smalltalk/X
* Do not use CharacterSet, use String
"{ Package: 'stx:goodies/petitparser/tests' }"
"{ NameSpace: Smalltalk }"
PPCompositeParser subclass:#PPArithmeticParser
instanceVariableNames:'terms addition factors multiplication power primary parentheses
number'
classVariableNames:''
poolDictionaries:''
category:'PetitTests-Examples'
!
!PPArithmeticParser methodsFor:'accessing'!
start
^ terms end
! !
!PPArithmeticParser methodsFor:'grammar'!
addition
^ (factors separatedBy: ($+ asParser / $- asParser) trim)
foldLeft: [ :a :op :b | a perform: op asSymbol with: b ]
!
factors
^ multiplication / power
!
multiplication
^ (power separatedBy: ($* asParser / $/ asParser) trim)
foldLeft: [ :a :op :b | a perform: op asSymbol with: b ]
!
number
^ ($- asParser optional , #digit asParser plus , ($. asParser , #digit asParser plus) optional) flatten trim
==> [ :value | value asNumber ]
!
parentheses
^ $( asParser trim , terms , $) asParser trim
==> [ :nodes | nodes at: 2 ]
!
power
^ (primary separatedBy: $^ asParser trim)
foldRight: [ :a :op :b | a raisedTo: b ]
!
primary
^ number / parentheses
!
terms
^ addition / factors
! !
!PPArithmeticParser class methodsFor:'documentation'!
version
^ '$Header: /cvs/stx/stx/goodies/petitparser/PPArithmeticParser.st,v 1.4 2014-03-04 14:33:59 cg Exp $'
!
version_CVS
^ '$Header: /cvs/stx/stx/goodies/petitparser/PPArithmeticParser.st,v 1.4 2014-03-04 14:33:59 cg Exp $'
!
version_SVN
^ '$Id: PPArithmeticParser.st,v 1.4 2014-03-04 14:33:59 cg Exp $'
! !