Implement primitive liftable

Author: nicolasstucki

library/src/scala/quoted/Liftable.scala

@@ -13,6 +13,12 @@ abstract class Liftable[T] {
  *  gives an alternative implementation using just the basic staging system.
  */
 object Liftable {
-  implicit def IntIsLiftable: Liftable[Int] = (x: Int) => new ValueExpr(x)
   implicit def BooleanIsLiftable: Liftable[Boolean] = (x: Boolean) => new ValueExpr(x)
+  implicit def ByteLiftable: Liftable[Byte] = (x: Byte) => new ValueExpr(x)
+  implicit def CharIsLiftable: Liftable[Char] = (x: Char) => new ValueExpr(x)
+  implicit def ShortIsLiftable: Liftable[Short] = (x: Short) => new ValueExpr(x)
+  implicit def IntIsLiftable: Liftable[Int] = (x: Int) => new ValueExpr(x)
+  implicit def LongIsLiftable: Liftable[Long] = (x: Long) => new ValueExpr(x)
+  implicit def FloatIsLiftable: Liftable[Float] = (x: Float) => new ValueExpr(x)
+  implicit def DoubleIsLiftable: Liftable[Double] = (x: Double) => new ValueExpr(x)
 }

tests/pos/quote-liftable.scala

@@ -24,5 +24,14 @@ object Test {
     }
   }
 
+  (true: Expr[Boolean])
+  (1: Expr[Byte])
+  ('a': Expr[Char])
+  (1: Expr[Short])
+  (1: Expr[Int])
+  (1L: Expr[Long])
+  (1.0f: Expr[Float])
+  (1.0: Expr[Double])
+
   val xs: Expr[List[Int]] = 1 :: 2 :: 3 :: Nil
 }