"{ Package: 'stx:goodies/petitparser' }"
PPAbstractParseTest subclass:#PPObjectTest
instanceVariableNames:''
classVariableNames:''
poolDictionaries:''
category:'PetitTests-Tests'
!
!PPObjectTest methodsFor:'parsers'!
integer
^ PPPredicateObjectParser
on: [ :each | each isInteger ]
message: 'integer expected'
!
string
^ PPPredicateObjectParser
on: [ :each | each isString ]
message: 'string expected'
! !
!PPObjectTest methodsFor:'testing'!
testInteger
self assert: self integer parse: #(123) to: 123.
self assert: self integer fail: #('abc')
!
testString
self assert: self string parse: #('abc') to: 'abc'.
self assert: self string fail: #(123)
! !
!PPObjectTest methodsFor:'testing-fancy'!
testFibonacci
"This parser accepts fibonacci sequences with arbitrary start pairs."
| parser |
parser := ((self integer , self integer) end ==> [ :pair | pair first + pair last ])
/ (self integer , (self integer , self integer) and >=> [ :stream :continuation |
| result |
result := continuation value.
(result isPetitFailure or: [ result first + result last first ~= result last last ])
ifFalse: [ parser parseOn: stream ]
ifTrue: [ PPFailure message: 'invalid fibonacci sequence' at: stream position ] ]).
self assert: parser parse: #(1 1) to: 2.
self assert: parser parse: #(1 1 2) to: 3.
self assert: parser parse: #(1 1 2 3) to: 5.
self assert: parser parse: #(1 1 2 3 5) to: 8.
self assert: parser parse: #(1 1 2 3 5 8) to: 13.
self assert: parser parse: #(1 1 2 3 5 8 13) to: 21.
self assert: parser fail: #().
self assert: parser fail: #(1).
self assert: parser fail: #(1 2 3 4) end: 2
! !
!PPObjectTest methodsFor:'testing-operators'!
testChoice
| parser |
parser := self integer / self string.
self assert: parser parse: #(123) to: 123.
self assert: parser parse: #('abc') to: 'abc'
!
testSequence
| parser |
parser := self integer , self string.
self assert: parser parse: #(123 'abc') to: #(123 'abc').
self assert: parser fail: #(123 456).
self assert: parser fail: #('abc' 'def').
self assert: parser fail: #('abc' 123)
! !
!PPObjectTest class methodsFor:'documentation'!
version
^ '$Header: /cvs/stx/stx/goodies/petitparser/PPObjectTest.st,v 1.3 2012-05-04 22:04:44 vrany Exp $'
!
version_CVS
^ '$Header: /cvs/stx/stx/goodies/petitparser/PPObjectTest.st,v 1.3 2012-05-04 22:04:44 vrany Exp $'
!
version_SVN
^ '§Id: PPObjectTest.st 4 2010-12-18 17:02:23Z kursjan §'
! !