Remove Pharoisms to make code more portable and running on Smalltalk/X
* Use ANSI `(Character codePoint: 13)` (`10`) instead of `Character cr` (`lf`), This is more portable
and does not depend on dialects interpretation of `#cr` - Smalltalk/X convert it according to
platform line end convention (UNIX/Windows/Mac)
* Do not assume exact value of a printstring in tests, i.e., instead of
`msg includesSubstring: '$a'
code
`msg includesSubstring: $a printString.
This way, the test is independent on the printString value, which may differ among dialects.
Q: Is printString value of String and/or Character defined in ANSI?
* In assestions, instead of `#equals:` use plain old `#=`, which is more portable.
* Removed Character>>- used to create range parser. Use portable `(Interval from: $a to: $z) asParser`
instead of just `$a - $z`. Do not use ($a to: $z) asParser as in Pharo, Character>>to:
does not create an Interval but an Array (sigh).
"{ Package: 'stx:goodies/petitparser' }"
ReadStream subclass:#PPStream
instanceVariableNames:''
classVariableNames:''
poolDictionaries:''
category:'PetitParser-Core'
!
!PPStream methodsFor:'accessing'!
collection
"Answer the underlying collection."
^ collection
!
next: anInteger
"Answer up to anInteger elements of my collection. Overridden for efficiency."
| answer endPosition |
endPosition := position + anInteger min: readLimit.
answer := collection copyFrom: position + 1 to: endPosition.
position := endPosition.
^ answer
!
peek
"An improved version of peek, that is slightly faster than the built in version."
^ self atEnd ifFalse: [ collection at: position + 1 ]
!
position: anInteger
"The receiver does not check for invalid arguments passed to this method, as it is solely used with valid indexes for backtracking."
position := anInteger
!
uncheckedPeek
"An unchecked version of peek that throws an error if we try to peek over the end of the stream, even faster than #peek."
^ collection at: position + 1
! !
!PPStream methodsFor:'converting'!
asPetitStream
^ self
! !
!PPStream methodsFor:'printing'!
printOn: aStream
collection isString
ifFalse: [ ^ super printOn: aStream ].
aStream
nextPutAll: (collection copyFrom: 1 to: position);
nextPutAll: '·';
nextPutAll: (collection copyFrom: position + 1 to: readLimit)
! !
!PPStream methodsFor:'queries'!
insideCRLF
(position < 1) ifTrue: [ ^ false ].
^ (self peek = (Character codePoint: 10)) and: [ self peekBack = (Character codePoint: 13) ]
"Modified: / 03-10-2014 / 23:52:33 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!
isStartOfLine
(position = 0) ifTrue: [ ^ true ].
self insideCRLF ifTrue: [ ^ false ].
^ (self peekBack = (Character codePoint: 13)) or: [ self peekBack = (Character codePoint: 10)].
"Modified: / 03-10-2014 / 23:52:56 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !
!PPStream class methodsFor:'documentation'!
version
^ '$Header: /cvs/stx/stx/goodies/petitparser/PPStream.st,v 1.4 2014-03-04 14:32:00 cg Exp $'
!
version_CVS
^ '$Header: /cvs/stx/stx/goodies/petitparser/PPStream.st,v 1.4 2014-03-04 14:32:00 cg Exp $'
!
version_SVN
^ '$Id: PPStream.st,v 1.4 2014-03-04 14:32:00 cg Exp $'
! !