Introduce support for Unliftable for Quasiquotes

Unliftable is a type class similar to existing Liftable that lets
users to extract custom data types out of trees with the help of
straightforward type ascription syntax:

  val q“foo.bar(${baz: Baz})” = ...

This will use Unliftable[Baz] to extract custom data type Baz out of
a tree nested inside of the another tree. A simpler example would be
extracting of constant values:

  val q”${x: Int} + ${y: Int}” = q”1 + 2”

1 files changed, 102 insertions, 0 deletions

diff --git a/src/reflect/scala/reflect/api/StandardLiftables.scala b/src/reflect/scala/reflect/api/StandardLiftables.scala
index 2ea83503cc..57464459be 100644
--- a/src/reflect/scala/reflect/api/StandardLiftables.scala
+++ b/src/reflect/scala/reflect/api/StandardLiftables.scala
@@ -121,4 +121,106 @@ trait StandardLiftables { self: Universe =>
       SyntacticTuple(liftT1(t._1) :: liftT2(t._2) :: liftT3(t._3) :: liftT4(t._4) :: liftT5(t._5) :: liftT6(t._6) :: liftT7(t._7) :: liftT8(t._8) :: liftT9(t._9) :: liftT10(t._10) :: liftT11(t._11) :: liftT12(t._12) :: liftT13(t._13) :: liftT14(t._14) :: liftT15(t._15) :: liftT16(t._16) :: liftT17(t._17) :: liftT18(t._18) :: liftT19(t._19) :: liftT20(t._20) :: liftT21(t._21) :: liftT22(t._22) :: Nil)
     }
   }
+
+  trait Unliftable[T] {
+    def unapply(tree: Tree): Option[T]
+  }
+
+  object Unliftable {
+    def apply[T](pf: PartialFunction[Tree, T]): Unliftable[T] = new Unliftable[T] {
+      def unapply(value: Tree): Option[T] = pf.lift(value)
+    }
+
+    private def unliftPrimitive[Unboxed: ClassTag, Boxed: ClassTag] = Unliftable[Unboxed] {
+      case Literal(Constant(value))
+           if value.getClass == implicitly[ClassTag[Boxed]].runtimeClass
+           || value.getClass == implicitly[ClassTag[Unboxed]].runtimeClass =>
+        value.asInstanceOf[Unboxed]
+    }
+    implicit def unliftByte: Unliftable[Byte]       = unliftPrimitive[Byte, java.lang.Byte]
+    implicit def unliftShort: Unliftable[Short]     = unliftPrimitive[Short, java.lang.Short]
+    implicit def unliftChar: Unliftable[Char]       = unliftPrimitive[Char, java.lang.Character]
+    implicit def unliftInt: Unliftable[Int]         = unliftPrimitive[Int, java.lang.Integer]
+    implicit def unliftLong: Unliftable[Long]       = unliftPrimitive[Long, java.lang.Long]
+    implicit def unliftFloat: Unliftable[Float]     = unliftPrimitive[Float, java.lang.Float]
+    implicit def unliftDouble: Unliftable[Double]   = unliftPrimitive[Double, java.lang.Double]
+    implicit def unliftBoolean: Unliftable[Boolean] = unliftPrimitive[Boolean, java.lang.Boolean]
+    implicit def unliftUnit: Unliftable[Unit]       = unliftPrimitive[Unit, scala.runtime.BoxedUnit]
+    implicit def unliftString: Unliftable[String]   = Unliftable { case Literal(Constant(s: String)) => s }
+
+    implicit def unliftScalaSymbol: Unliftable[scala.Symbol] = Unliftable {
+      case Apply(ScalaDot(nme.Symbol), List(Literal(Constant(name: String)))) => scala.Symbol(name)
+    }
+
+    implicit def unliftName[T <: Name : ClassTag]: Unliftable[T] = Unliftable[T] { case Ident(name: T) => name; case Bind(name: T, Ident(nme.WILDCARD)) => name}
+    implicit def unliftType: Unliftable[Type]                    = Unliftable[Type] { case tt: TypeTree if tt.tpe != null => tt.tpe }
+    implicit def unliftConstant: Unliftable[Constant]            = Unliftable[Constant] { case Literal(const) => const }
+
+    implicit def unliftTuple1[T1](implicit UnliftT1: Unliftable[T1]): Unliftable[Tuple1[T1]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: Nil) => Tuple1(v1)
+    }
+    implicit def unliftTuple2[T1, T2](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2]): Unliftable[Tuple2[T1, T2]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: Nil) => Tuple2(v1, v2)
+    }
+    implicit def unliftTuple3[T1, T2, T3](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3]): Unliftable[Tuple3[T1, T2, T3]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: Nil) => Tuple3(v1, v2, v3)
+    }
+    implicit def unliftTuple4[T1, T2, T3, T4](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4]): Unliftable[Tuple4[T1, T2, T3, T4]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: Nil) => Tuple4(v1, v2, v3, v4)
+    }
+    implicit def unliftTuple5[T1, T2, T3, T4, T5](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5]): Unliftable[Tuple5[T1, T2, T3, T4, T5]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: Nil) => Tuple5(v1, v2, v3, v4, v5)
+    }
+    implicit def unliftTuple6[T1, T2, T3, T4, T5, T6](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6]): Unliftable[Tuple6[T1, T2, T3, T4, T5, T6]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: Nil) => Tuple6(v1, v2, v3, v4, v5, v6)
+    }
+    implicit def unliftTuple7[T1, T2, T3, T4, T5, T6, T7](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7]): Unliftable[Tuple7[T1, T2, T3, T4, T5, T6, T7]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: Nil) => Tuple7(v1, v2, v3, v4, v5, v6, v7)
+    }
+    implicit def unliftTuple8[T1, T2, T3, T4, T5, T6, T7, T8](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8]): Unliftable[Tuple8[T1, T2, T3, T4, T5, T6, T7, T8]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: Nil) => Tuple8(v1, v2, v3, v4, v5, v6, v7, v8)
+    }
+    implicit def unliftTuple9[T1, T2, T3, T4, T5, T6, T7, T8, T9](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8], UnliftT9: Unliftable[T9]): Unliftable[Tuple9[T1, T2, T3, T4, T5, T6, T7, T8, T9]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: UnliftT9(v9) :: Nil) => Tuple9(v1, v2, v3, v4, v5, v6, v7, v8, v9)
+    }
+    implicit def unliftTuple10[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8], UnliftT9: Unliftable[T9], UnliftT10: Unliftable[T10]): Unliftable[Tuple10[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: UnliftT9(v9) :: UnliftT10(v10) :: Nil) => Tuple10(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10)
+    }
+    implicit def unliftTuple11[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8], UnliftT9: Unliftable[T9], UnliftT10: Unliftable[T10], UnliftT11: Unliftable[T11]): Unliftable[Tuple11[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: UnliftT9(v9) :: UnliftT10(v10) :: UnliftT11(v11) :: Nil) => Tuple11(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11)
+    }
+    implicit def unliftTuple12[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8], UnliftT9: Unliftable[T9], UnliftT10: Unliftable[T10], UnliftT11: Unliftable[T11], UnliftT12: Unliftable[T12]): Unliftable[Tuple12[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: UnliftT9(v9) :: UnliftT10(v10) :: UnliftT11(v11) :: UnliftT12(v12) :: Nil) => Tuple12(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12)
+    }
+    implicit def unliftTuple13[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8], UnliftT9: Unliftable[T9], UnliftT10: Unliftable[T10], UnliftT11: Unliftable[T11], UnliftT12: Unliftable[T12], UnliftT13: Unliftable[T13]): Unliftable[Tuple13[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: UnliftT9(v9) :: UnliftT10(v10) :: UnliftT11(v11) :: UnliftT12(v12) :: UnliftT13(v13) :: Nil) => Tuple13(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13)
+    }
+    implicit def unliftTuple14[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8], UnliftT9: Unliftable[T9], UnliftT10: Unliftable[T10], UnliftT11: Unliftable[T11], UnliftT12: Unliftable[T12], UnliftT13: Unliftable[T13], UnliftT14: Unliftable[T14]): Unliftable[Tuple14[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: UnliftT9(v9) :: UnliftT10(v10) :: UnliftT11(v11) :: UnliftT12(v12) :: UnliftT13(v13) :: UnliftT14(v14) :: Nil) => Tuple14(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14)
+    }
+    implicit def unliftTuple15[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8], UnliftT9: Unliftable[T9], UnliftT10: Unliftable[T10], UnliftT11: Unliftable[T11], UnliftT12: Unliftable[T12], UnliftT13: Unliftable[T13], UnliftT14: Unliftable[T14], UnliftT15: Unliftable[T15]): Unliftable[Tuple15[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: UnliftT9(v9) :: UnliftT10(v10) :: UnliftT11(v11) :: UnliftT12(v12) :: UnliftT13(v13) :: UnliftT14(v14) :: UnliftT15(v15) :: Nil) => Tuple15(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15)
+    }
+    implicit def unliftTuple16[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8], UnliftT9: Unliftable[T9], UnliftT10: Unliftable[T10], UnliftT11: Unliftable[T11], UnliftT12: Unliftable[T12], UnliftT13: Unliftable[T13], UnliftT14: Unliftable[T14], UnliftT15: Unliftable[T15], UnliftT16: Unliftable[T16]): Unliftable[Tuple16[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: UnliftT9(v9) :: UnliftT10(v10) :: UnliftT11(v11) :: UnliftT12(v12) :: UnliftT13(v13) :: UnliftT14(v14) :: UnliftT15(v15) :: UnliftT16(v16) :: Nil) => Tuple16(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16)
+    }
+    implicit def unliftTuple17[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8], UnliftT9: Unliftable[T9], UnliftT10: Unliftable[T10], UnliftT11: Unliftable[T11], UnliftT12: Unliftable[T12], UnliftT13: Unliftable[T13], UnliftT14: Unliftable[T14], UnliftT15: Unliftable[T15], UnliftT16: Unliftable[T16], UnliftT17: Unliftable[T17]): Unliftable[Tuple17[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: UnliftT9(v9) :: UnliftT10(v10) :: UnliftT11(v11) :: UnliftT12(v12) :: UnliftT13(v13) :: UnliftT14(v14) :: UnliftT15(v15) :: UnliftT16(v16) :: UnliftT17(v17) :: Nil) => Tuple17(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17)
+    }
+    implicit def unliftTuple18[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8], UnliftT9: Unliftable[T9], UnliftT10: Unliftable[T10], UnliftT11: Unliftable[T11], UnliftT12: Unliftable[T12], UnliftT13: Unliftable[T13], UnliftT14: Unliftable[T14], UnliftT15: Unliftable[T15], UnliftT16: Unliftable[T16], UnliftT17: Unliftable[T17], UnliftT18: Unliftable[T18]): Unliftable[Tuple18[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: UnliftT9(v9) :: UnliftT10(v10) :: UnliftT11(v11) :: UnliftT12(v12) :: UnliftT13(v13) :: UnliftT14(v14) :: UnliftT15(v15) :: UnliftT16(v16) :: UnliftT17(v17) :: UnliftT18(v18) :: Nil) => Tuple18(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18)
+    }
+    implicit def unliftTuple19[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8], UnliftT9: Unliftable[T9], UnliftT10: Unliftable[T10], UnliftT11: Unliftable[T11], UnliftT12: Unliftable[T12], UnliftT13: Unliftable[T13], UnliftT14: Unliftable[T14], UnliftT15: Unliftable[T15], UnliftT16: Unliftable[T16], UnliftT17: Unliftable[T17], UnliftT18: Unliftable[T18], UnliftT19: Unliftable[T19]): Unliftable[Tuple19[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: UnliftT9(v9) :: UnliftT10(v10) :: UnliftT11(v11) :: UnliftT12(v12) :: UnliftT13(v13) :: UnliftT14(v14) :: UnliftT15(v15) :: UnliftT16(v16) :: UnliftT17(v17) :: UnliftT18(v18) :: UnliftT19(v19) :: Nil) => Tuple19(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19)
+    }
+    implicit def unliftTuple20[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8], UnliftT9: Unliftable[T9], UnliftT10: Unliftable[T10], UnliftT11: Unliftable[T11], UnliftT12: Unliftable[T12], UnliftT13: Unliftable[T13], UnliftT14: Unliftable[T14], UnliftT15: Unliftable[T15], UnliftT16: Unliftable[T16], UnliftT17: Unliftable[T17], UnliftT18: Unliftable[T18], UnliftT19: Unliftable[T19], UnliftT20: Unliftable[T20]): Unliftable[Tuple20[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: UnliftT9(v9) :: UnliftT10(v10) :: UnliftT11(v11) :: UnliftT12(v12) :: UnliftT13(v13) :: UnliftT14(v14) :: UnliftT15(v15) :: UnliftT16(v16) :: UnliftT17(v17) :: UnliftT18(v18) :: UnliftT19(v19) :: UnliftT20(v20) :: Nil) => Tuple20(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20)
+    }
+    implicit def unliftTuple21[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8], UnliftT9: Unliftable[T9], UnliftT10: Unliftable[T10], UnliftT11: Unliftable[T11], UnliftT12: Unliftable[T12], UnliftT13: Unliftable[T13], UnliftT14: Unliftable[T14], UnliftT15: Unliftable[T15], UnliftT16: Unliftable[T16], UnliftT17: Unliftable[T17], UnliftT18: Unliftable[T18], UnliftT19: Unliftable[T19], UnliftT20: Unliftable[T20], UnliftT21: Unliftable[T21]): Unliftable[Tuple21[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: UnliftT9(v9) :: UnliftT10(v10) :: UnliftT11(v11) :: UnliftT12(v12) :: UnliftT13(v13) :: UnliftT14(v14) :: UnliftT15(v15) :: UnliftT16(v16) :: UnliftT17(v17) :: UnliftT18(v18) :: UnliftT19(v19) :: UnliftT20(v20) :: UnliftT21(v21) :: Nil) => Tuple21(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21)
+    }
+    implicit def unliftTuple22[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22](implicit UnliftT1: Unliftable[T1], UnliftT2: Unliftable[T2], UnliftT3: Unliftable[T3], UnliftT4: Unliftable[T4], UnliftT5: Unliftable[T5], UnliftT6: Unliftable[T6], UnliftT7: Unliftable[T7], UnliftT8: Unliftable[T8], UnliftT9: Unliftable[T9], UnliftT10: Unliftable[T10], UnliftT11: Unliftable[T11], UnliftT12: Unliftable[T12], UnliftT13: Unliftable[T13], UnliftT14: Unliftable[T14], UnliftT15: Unliftable[T15], UnliftT16: Unliftable[T16], UnliftT17: Unliftable[T17], UnliftT18: Unliftable[T18], UnliftT19: Unliftable[T19], UnliftT20: Unliftable[T20], UnliftT21: Unliftable[T21], UnliftT22: Unliftable[T22]): Unliftable[Tuple22[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22]] = Unliftable {
+      case SyntacticTuple(UnliftT1(v1) :: UnliftT2(v2) :: UnliftT3(v3) :: UnliftT4(v4) :: UnliftT5(v5) :: UnliftT6(v6) :: UnliftT7(v7) :: UnliftT8(v8) :: UnliftT9(v9) :: UnliftT10(v10) :: UnliftT11(v11) :: UnliftT12(v12) :: UnliftT13(v13) :: UnliftT14(v14) :: UnliftT15(v15) :: UnliftT16(v16) :: UnliftT17(v17) :: UnliftT18(v18) :: UnliftT19(v19) :: UnliftT20(v20) :: UnliftT21(v21) :: UnliftT22(v22) :: Nil) => Tuple22(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22)
+    }
+  }
 }