- TBool ☑
- TInt
- TFloat
- TList
Last active
May 2, 2016 10:58
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package net.akouryy.lib.dtypes | |
import scala.language.{higherKinds, implicitConversions} | |
import scala.reflect.ClassTag | |
sealed trait TBool { | |
type Not <: TBool | |
type And[B <: TBool] <: TBool | |
type Or [B <: TBool] <: TBool | |
type If[X, Y] | |
} | |
class TTrue extends TBool { | |
type Not = TFalse | |
type And[B <: TBool] = B | |
type Or [B <: TBool] = TTrue | |
type If[X, Y] = X | |
} | |
class TFalse extends TBool { | |
type Not = TTrue | |
type And[B <: TBool] = TFalse | |
type Or [B <: TBool] = B | |
type If[X, Y] = Y | |
} | |
object TBool { | |
type ![B <: TBool] = B#Not | |
type &&[B1 <: TBool, B2 <: TBool] = B1#And[B2] | |
type ||[B1 <: TBool, B2 <: TBool] = B1#Or[B2] | |
type If[B <: TBool, X, Y] = B#If[X, Y] | |
implicit def classTagOfNot[B <: TBool : ClassTag] = | |
(if(value[B]) implicitly[ClassTag[TFalse]] else implicitly[ClassTag[TTrue]] ).asInstanceOf[ClassTag[![B]]] | |
implicit def classTagOfAnd[B1 <: TBool : ClassTag, B2 <: TBool : ClassTag] = | |
(if(value[B1]) implicitly[ClassTag[TTrue]] else implicitly[ClassTag[B2]] ).asInstanceOf[ClassTag[B1 && B2]] | |
implicit def classTagOfOr[B1 <: TBool : ClassTag, B2 <: TBool : ClassTag] = | |
(if(value[B1]) implicitly[ClassTag[B2]] else implicitly[ClassTag[TFalse]]).asInstanceOf[ClassTag[B1 || B2]] | |
def value[B <: TBool : ClassTag]: Boolean = implicitly[ClassTag[B]].runtimeClass == classOf[TTrue] | |
} |
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