This is a very trivial library, but in my experience, this stuff tends to come in handy.
val LineSep = ...
def nonEmptyStringOption(s : String) : Option[String] = ...
def nonEmptyStringOption(o : Option[String]) : Option[String] = ...
def increaseIndent( spaces : Int )( block : String ) = ...
def decreaseIndent( spaces : Int )( block : String ) = ...
def prependEachLine( prefix : String )( block : String ) : String = ...
def increaseIndentLevel(block : String)(using ui : UnitIndent) = ...
def decreaseIndentLevel(block : String)(using ui : UnitIndent) = ...
def increaseIndentLevels(levels : Int)(block : String)(using ui : UnitIndent) = ...
def decreaseIndentLevels(levels : Int)(block : String)(using ui : UnitIndent) = ...
extension (w : java.io.Writer)
def indent(indentLevel: Int)(s: String)(using ui : UnitIndent) : Unit = ...
def writeln(s: String) : Unit = ...
def writeln() : Unit = ...
def indentln(indentLevel: Int)(s: String)(using ui : UnitIndent) : Unit = ...and
object UnitIndent:
def fromInt(i : Int) : UnitIndent = i
given UnitIndent = 2
opaque type UnitIndent = Int
extension (i : UnitIndent)
def toInt : Int = iWhat's here now is an extremely minimalist set of Scala 3 utilities.
Most prominent are extension methods of java.io.Writer so that
writeln(...) methods and an indentln(...)(...) method are available.
Indents are rendered in spaced but described in levels. The number of
spaces in an indent is defined by a given (and so overridable) UnitIndent,
which is just an opaque wrapper around Int.
There are also methods to increase / decrease the indent of a block
of text embedded in a String, and to prefix each line of a block
(to, for example, create blockquotes in markdown with '> '.) All
trivial, all useful, for now one short file of utilities
and the UnitIndent type.