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: <Object> 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: 04/22/2022