Programmer Reference : UnicodeSupport : UnicodeScalarView
UnicodeScalarView
Description
Provides a unicode scalar representational view over a unicode component where each element in the view is a 21-bit <UnicodeScalar> which represent all Unicode code points except high/low surrogate code points used for UTF-16.
This view is essentially equivalent to the <Utf32View> except that it works with the <UnicodeScalar> objects instead of basic 32-bit <Integer> objects.
• #next - Answers a <UnicodeScalar>.
• #contents - Answers an <Array> of <UnicodeScalar>
Instance State
• lineDelimiter: unicode scalar or sequenceable collection of unicode scalars
Examples
| view |
view := UnicodeScalarView on: 'abc' , String crlf.
self assert: [view next = $a asUnicodeScalar].
self assert: [view next = $b asUnicodeScalar].
self assert: [view next = $c asUnicodeScalar].
self assert: [view next = UnicodeScalar cr].
self assert: [view next = UnicodeScalar lf].
self assert: [view atEnd].
self assert: [view contents = (('abc' , String crlf) asArray collect: [:e | e asUnicodeScalar])]
Class Methods
lineDelimiter 
   Answer the cached standard line delimiters
   
   Answers:
    <Set>
Instance Methods
lineDelimiter 
   Answer the line delimiter of the receiver.
   If undefined, then a default set of Unicode line delimiters will be used.

     Standard Line Delimiters:
      U+000A: LINE FEED (LF)
      U+000B: LINE TABULATION (VT)
      U+000C: FORM FEED (FF)
      U+000D: CARRIAGE RETURN (CR)
      U+000D U+000A: CR-LF
      U+0085: NEXT LINE (NEL)
      U+2028: LINE SEPARATOR
      U+2029: PARAGRAPH SEPARATOR
    
   Answers:
    <SequenceableCollection> of <UnicodeScalar> or nil for default
lineDelimiter: 
   Set the line delimiter of the receiver.
   Compat provided for String and Character.
   
   Arguments:
    anObject -  <UnicodeScalar> scalar delim
              <Grapheme> grapheme delim
              <UnicodeString> graphemes
              <Array> of <implementors of #asUnicodeScalar>
              Compat: <String | Character>
   Answers:
    <UnicodeView> self
linesDo: 
   Execute aBlock with each line in this string.
   Line delimiters are not included in what is passed to @aBlock
   
   Arguments:  
    aBlock - <Block> 1-arg block with each line
nextLine 
   Answer the elements between the current position and the next lineDelimiter.
   
   Answers:
    <Array>
supportsLineDelimiters 
   Subclasses that support line delimiters should override
   and answer true.  This will allow for apis like nextLine
   
   Answers:
    <Boolean>
Last modified date: 01/18/2023