replpp.shaded.pprint.TPrint.scala Maven / Gradle / Ivy
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package replpp.shaded.pprint
import replpp.shaded.fansi
/**
* Summoning an implicit `TPrint[T]` provides a pretty-printed
* string representation of the type `T`, much better than is
* provided by the default `Type#toString`. In particular
*
* - More forms are properly supported and printed
* - Prefixed Types are printed un-qualified, according to
* what's currently in scope
*/
trait TPrint[T] {
def render(implicit tpc: TPrintColors): fansi.Str
}
object TPrint extends TPrintLowPri{
def recolor[T](s: fansi.Str): TPrint[T] = {
new TPrint[T]{
def render(implicit tpc: TPrintColors) = {
val colors = s.getColors
val updatedColors = colors.map{
c => if (c == fansi.Color.Green.applyMask) tpc.typeColor.applyMask else 0L
}
fansi.Str.fromArrays(s.getChars, updatedColors)
}
}
}
def implicitly[T](implicit t: TPrint[T]): TPrint[T] = t
implicit val NothingTPrint: TPrint[Nothing] =
recolor[Nothing](fansi.Color.Green("Nothing"))
}
case class TPrintColors(typeColor: fansi.Attrs)
object TPrintColors {
implicit object BlackWhite extends TPrintColors(fansi.Attrs())
object Colors extends TPrintColors(fansi.Color.Green){
implicit val Colored: TPrintColors = this
}
}