diff options
Diffstat (limited to 'test/files/pos')
35 files changed, 280 insertions, 40 deletions
diff --git a/test/files/pos/annotated-original/M_1.scala b/test/files/pos/annotated-original/M_1.scala index 089a3a13c5..e312f9abbf 100644 --- a/test/files/pos/annotated-original/M_1.scala +++ b/test/files/pos/annotated-original/M_1.scala @@ -1,7 +1,7 @@ import language.experimental.macros -import reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context object M { - def impl(c: BlackboxContext)(a: c.Expr[Any]) = c.Expr[Any](c.resetLocalAttrs(a.tree)) + def impl(c: Context)(a: c.Expr[Any]) = c.Expr[Any](c.resetLocalAttrs(a.tree)) def m(a: Any) = macro impl } diff --git a/test/files/pos/annotated-treecopy/Impls_Macros_1.scala b/test/files/pos/annotated-treecopy/Impls_Macros_1.scala index 50c671707d..b02864b994 100644 --- a/test/files/pos/annotated-treecopy/Impls_Macros_1.scala +++ b/test/files/pos/annotated-treecopy/Impls_Macros_1.scala @@ -1,5 +1,5 @@ import scala.language.experimental.macros -import scala.reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context import collection.mutable.ListBuffer import collection.mutable.Stack @@ -12,7 +12,7 @@ object Macros { def tree[T,U](f:Function1[T,U]): Function1[T,U] = macro tree_impl[T,U] - def tree_impl[T:c.WeakTypeTag,U:c.WeakTypeTag](c: BlackboxContext) + def tree_impl[T:c.WeakTypeTag,U:c.WeakTypeTag](c: Context) (f:c.Expr[Function1[T,U]]): c.Expr[Function1[T,U]] = { import c.universe._ val ttag = c.weakTypeTag[U] diff --git a/test/files/pos/attachments-typed-another-ident/Impls_1.scala b/test/files/pos/attachments-typed-another-ident/Impls_1.scala index 6271359921..8016143a4c 100644 --- a/test/files/pos/attachments-typed-another-ident/Impls_1.scala +++ b/test/files/pos/attachments-typed-another-ident/Impls_1.scala @@ -1,10 +1,10 @@ -import scala.reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context import language.experimental.macros object MyAttachment object Macros { - def impl(c: BlackboxContext) = { + def impl(c: Context) = { import c.universe._ val ident = Ident(TermName("bar")) updateAttachment MyAttachment assert(ident.attachments.get[MyAttachment.type].isDefined, ident.attachments) diff --git a/test/files/pos/attachments-typed-ident/Impls_1.scala b/test/files/pos/attachments-typed-ident/Impls_1.scala index f24ea88a5d..af2cc59ecd 100644 --- a/test/files/pos/attachments-typed-ident/Impls_1.scala +++ b/test/files/pos/attachments-typed-ident/Impls_1.scala @@ -1,10 +1,10 @@ -import scala.reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context import language.experimental.macros object MyAttachment object Macros { - def impl(c: BlackboxContext) = { + def impl(c: Context) = { import c.universe._ val ident = Ident(TermName("bar")) updateAttachment MyAttachment assert(ident.attachments.get[MyAttachment.type].isDefined, ident.attachments) diff --git a/test/files/pos/macro-implicit-invalidate-on-error.scala b/test/files/pos/macro-implicit-invalidate-on-error.scala index f9756d965f..bb83e3cc38 100644 --- a/test/files/pos/macro-implicit-invalidate-on-error.scala +++ b/test/files/pos/macro-implicit-invalidate-on-error.scala @@ -1,5 +1,5 @@ import scala.language.experimental.macros -import scala.reflect.macros.Context +import scala.reflect.macros.blackbox.Context trait LegacyLiftable[T] { def apply(universe: scala.reflect.api.Universe, value: T): universe.Tree diff --git a/test/files/pos/t2066.scala b/test/files/pos/t2066.scala new file mode 100644 index 0000000000..30cb99d45c --- /dev/null +++ b/test/files/pos/t2066.scala @@ -0,0 +1,25 @@ +trait A1 { + def f[T[+_]] = () +} + +trait B1 extends A1 { + override def f[T[_]] = () +} + + +trait A2 { + def f[T[-_]] = () +} + +trait B2 extends A2 { + override def f[T[_]] = () +} + + +trait A3 { + def f[T[X[_]]] = () +} + +trait B3 extends A3 { + override def f[T[X[+_]]] = () +} diff --git a/test/files/pos/t5692a/Macros_1.scala b/test/files/pos/t5692a/Macros_1.scala index 0e91f4d6a0..440e37d75d 100644 --- a/test/files/pos/t5692a/Macros_1.scala +++ b/test/files/pos/t5692a/Macros_1.scala @@ -1,6 +1,6 @@ -import scala.reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context object Macros { - def impl[T](c: BlackboxContext) = { import c.universe._; c.Expr[Unit](q"()") } + def impl[T](c: Context) = { import c.universe._; c.Expr[Unit](q"()") } def foo[T] = macro impl[T] }
\ No newline at end of file diff --git a/test/files/pos/t5692b/Macros_1.scala b/test/files/pos/t5692b/Macros_1.scala index 1034a1ea4a..98fb882844 100644 --- a/test/files/pos/t5692b/Macros_1.scala +++ b/test/files/pos/t5692b/Macros_1.scala @@ -1,6 +1,6 @@ -import scala.reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context object Macros { - def impl[T, U](c: BlackboxContext) = { import c.universe._; c.Expr[Unit](q"()") } + def impl[T, U](c: Context) = { import c.universe._; c.Expr[Unit](q"()") } def foo[T, U] = macro impl[T, U] }
\ No newline at end of file diff --git a/test/files/pos/t5706.scala b/test/files/pos/t5706.scala index 1970f5971f..6f0207366b 100644 --- a/test/files/pos/t5706.scala +++ b/test/files/pos/t5706.scala @@ -1,5 +1,5 @@ -import scala.reflect.macros.BlackboxContext -import scala.reflect.macros.WhiteboxContext +import scala.reflect.macros.blackbox.{Context => BlackboxContext} +import scala.reflect.macros.whitebox.{Context => WhiteboxContext} class Logger { def error1(message: String) = macro Impls.error1 diff --git a/test/files/pos/t5744/Macros_1.scala b/test/files/pos/t5744/Macros_1.scala index 0fc13c12d7..6e2bf4825b 100644 --- a/test/files/pos/t5744/Macros_1.scala +++ b/test/files/pos/t5744/Macros_1.scala @@ -1,18 +1,18 @@ import scala.language.experimental.macros -import scala.reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context object Macros { def foo[U: Numeric](x: U) = macro foo_impl[U] def bar[U: Numeric : Equiv, Y <% String](x: U)(implicit s: String) = macro bar_impl[U, Y] - def foo_impl[U](c: BlackboxContext)(x: c.Expr[U])(numeric: c.Expr[Numeric[U]]) = { + def foo_impl[U](c: Context)(x: c.Expr[U])(numeric: c.Expr[Numeric[U]]) = { import c.universe._ val plusOne = Apply(Select(numeric.tree, newTermName("plus")), List(x.tree, Literal(Constant(1)))) val body = Apply(Select(Ident(definitions.PredefModule), newTermName("println")), List(plusOne)) c.Expr[Unit](body) } - def bar_impl[U, Y](c: BlackboxContext)(x: c.Expr[U])(numeric: c.Expr[Numeric[U]], equiv: c.Expr[Equiv[U]], viewAsString: c.Expr[Y => String], s: c.Expr[String]) = { + def bar_impl[U, Y](c: Context)(x: c.Expr[U])(numeric: c.Expr[Numeric[U]], equiv: c.Expr[Equiv[U]], viewAsString: c.Expr[Y => String], s: c.Expr[String]) = { import c.universe._ val plusOne = Apply(Select(numeric.tree, newTermName("plus")), List(x.tree, Literal(Constant(1)))) val plusLen = Apply(Select(numeric.tree, newTermName("plus")), List(plusOne, Select(s.tree, newTermName("length")))) diff --git a/test/files/pos/t6047.scala b/test/files/pos/t6047.scala index c5bb44d87e..8c3dd18953 100644 --- a/test/files/pos/t6047.scala +++ b/test/files/pos/t6047.scala @@ -1,10 +1,10 @@ -import scala.reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context import java.io.InputStream object Macros { def unpack[A](input: InputStream): A = macro unpack_impl[A] - def unpack_impl[A: c.WeakTypeTag](c: BlackboxContext)(input: c.Expr[InputStream]): c.Expr[A] = { + def unpack_impl[A: c.WeakTypeTag](c: Context)(input: c.Expr[InputStream]): c.Expr[A] = { import c.universe._ def unpackcode(tpe: c.Type): c.Expr[_] = { diff --git a/test/files/pos/t6447.scala b/test/files/pos/t6447.scala index 8203c0cddd..6ef69d4852 100644 --- a/test/files/pos/t6447.scala +++ b/test/files/pos/t6447.scala @@ -1,18 +1,18 @@ import scala.language.experimental.macros -import scala.reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context class X { type T } object X { // this works def foo(x: X): x.T = macro fooImpl - def fooImpl(c: BlackboxContext)(x: c.Expr[X]): c.Expr[x.value.T] = ??? + def fooImpl(c: Context)(x: c.Expr[X]): c.Expr[x.value.T] = ??? // this doesn't def bar(x: X, y: X): (x.T, y.T) = macro barImpl - def barImpl(c: BlackboxContext)(x: c.Expr[X], y: c.Expr[X]): c.Expr[(x.value.T, y.value.T)] = ??? + def barImpl(c: Context)(x: c.Expr[X], y: c.Expr[X]): c.Expr[(x.value.T, y.value.T)] = ??? // neither does this def baz(x: X)(xs: List[x.T]): Unit = macro bazImpl - def bazImpl(c: BlackboxContext)(x: c.Expr[X])(xs: c.Expr[List[x.value.T]]): c.Expr[Unit] = ??? + def bazImpl(c: Context)(x: c.Expr[X])(xs: c.Expr[List[x.value.T]]): c.Expr[Unit] = ??? } diff --git a/test/files/pos/t6485a/Macros_1.scala b/test/files/pos/t6485a/Macros_1.scala index c637c2cfee..570c987709 100644 --- a/test/files/pos/t6485a/Macros_1.scala +++ b/test/files/pos/t6485a/Macros_1.scala @@ -1,5 +1,5 @@ -import scala.reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context object Macros { - def crash(c: BlackboxContext): c.Expr[Unit] = c.universe.reify(()) + def crash(c: Context): c.Expr[Unit] = c.universe.reify(()) }
\ No newline at end of file diff --git a/test/files/pos/t6485b/Test.scala b/test/files/pos/t6485b/Test.scala index 9897987516..3b81c6f8ab 100644 --- a/test/files/pos/t6485b/Test.scala +++ b/test/files/pos/t6485b/Test.scala @@ -1,10 +1,10 @@ import scala.language.experimental.macros -import scala.reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context final class Ops[T](val x: T) extends AnyVal { def f = macro Macros.crash } object Macros { - def crash(c: BlackboxContext): c.Expr[Unit] = c.universe.reify(()) + def crash(c: Context): c.Expr[Unit] = c.universe.reify(()) }
\ No newline at end of file diff --git a/test/files/pos/t6516.scala b/test/files/pos/t6516.scala index aed359976e..2980d83eb6 100644 --- a/test/files/pos/t6516.scala +++ b/test/files/pos/t6516.scala @@ -1,17 +1,17 @@ import scala.language.experimental.macros -import scala.reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context import scala.collection.TraversableLike // This one compiles object Test { - type Alias[T, CC[_]] = BlackboxContext { type PrefixType = TraversableLike[T, CC[T]] } + type Alias[T, CC[_]] = Context { type PrefixType = TraversableLike[T, CC[T]] } def f() = macro f_impl def f_impl(c: Alias[Int, List])() = ??? } // This one doesn't object Test2 { - type Ctx = scala.reflect.macros.BlackboxContext + type Ctx = scala.reflect.macros.blackbox.Context type Alias[T, CC[_]] = Ctx { type PrefixType = TraversableLike[T, CC[T]] } def f() = macro f_impl diff --git a/test/files/pos/t7377/Macro_1.scala b/test/files/pos/t7377/Macro_1.scala index 7280cfeaf5..9f51248095 100644 --- a/test/files/pos/t7377/Macro_1.scala +++ b/test/files/pos/t7377/Macro_1.scala @@ -1,7 +1,7 @@ import language.experimental._ -import reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context object M { - def noopImpl[A](c: BlackboxContext)(expr: c.Expr[A]): c.Expr[A] = c.Expr(c.typecheck(c.resetLocalAttrs(expr.tree))) + def noopImpl[A](c: Context)(expr: c.Expr[A]): c.Expr[A] = c.Expr(c.typecheck(c.resetLocalAttrs(expr.tree))) def noop[A](expr: A): A = macro noopImpl[A] } diff --git a/test/files/pos/t7461/Macros_1.scala b/test/files/pos/t7461/Macros_1.scala index 89ae7c70e3..ca84d75624 100644 --- a/test/files/pos/t7461/Macros_1.scala +++ b/test/files/pos/t7461/Macros_1.scala @@ -1,8 +1,8 @@ -import scala.reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context import language.experimental.macros object Macros { - def impl(c: BlackboxContext) = { + def impl(c: Context) = { import c.universe._ val wut = c.typecheck(Select(Literal(Constant(10)), newTermName("$minus")), silent = true) // println(showRaw(wut, printIds = true, printTypes = true)) diff --git a/test/files/pos/t7649.scala b/test/files/pos/t7649.scala index fa5d13369f..d70dc05ea4 100644 --- a/test/files/pos/t7649.scala +++ b/test/files/pos/t7649.scala @@ -1,5 +1,5 @@ object Test { - val c: reflect.macros.BlackboxContext = ??? + val c: scala.reflect.macros.blackbox.Context = ??? import c.universe._ reify { // The lookup of the implicit WeakTypeTag[Any] diff --git a/test/files/pos/t7776.scala b/test/files/pos/t7776.scala index e0584b70e2..a36497a7a1 100644 --- a/test/files/pos/t7776.scala +++ b/test/files/pos/t7776.scala @@ -1,5 +1,5 @@ import scala.language.experimental.macros -import scala.reflect.macros.Context +import scala.reflect.macros.blackbox.Context class MacroErasure { def app(f: Any => Any, x: Any): Any = macro MacroErasure.appMacro diff --git a/test/files/pos/t8001/Macros_1.scala b/test/files/pos/t8001/Macros_1.scala index fd26016d4b..3b80b88295 100644 --- a/test/files/pos/t8001/Macros_1.scala +++ b/test/files/pos/t8001/Macros_1.scala @@ -1,9 +1,9 @@ import scala.language.experimental.macros -import scala.reflect.macros.BlackboxContext +import scala.reflect.macros.blackbox.Context object Macros { def foo: Unit = macro impl - def impl(c: BlackboxContext) = { + def impl(c: Context) = { import c.universe._ q"()" } diff --git a/test/files/pos/t8013/inpervolator_1.scala b/test/files/pos/t8013/inpervolator_1.scala index fb71571afc..89b7c22709 100644 --- a/test/files/pos/t8013/inpervolator_1.scala +++ b/test/files/pos/t8013/inpervolator_1.scala @@ -4,7 +4,7 @@ package t8013 // perverse macro to confuse Xlint import scala.language.experimental.macros -import scala.reflect.macros.{ BlackboxContext => Context } +import scala.reflect.macros.blackbox.Context object Perverse { diff --git a/test/files/pos/t8045.scala b/test/files/pos/t8045.scala new file mode 100644 index 0000000000..21154e386a --- /dev/null +++ b/test/files/pos/t8045.scala @@ -0,0 +1,17 @@ +object Test extends App { + case class Number(i: Int) + + object UnliftNumber { + def unapply(t: Any): Option[Number] = t match { + case i: Int => Some(Number(i)) + case _ => None + } + } + + def eval(expr: Any): Option[Number] = expr match { + case UnliftNumber(n) => Some(n) + case _ => None + } + + println(eval(1)) +} diff --git a/test/files/pos/t8046.scala b/test/files/pos/t8046.scala new file mode 100644 index 0000000000..304d70b6b8 --- /dev/null +++ b/test/files/pos/t8046.scala @@ -0,0 +1,20 @@ +trait One { + type Op[A] + type Alias[A] = Op[A] +} + +trait Two extends One { + trait Op[A] extends (A => A) + + // This compiles + class View1 extends Op[Int] { def apply(xs: Int) = xs } + + // ??? base class View2 not found in basetypes of class View2 + // ./a.scala:9: error: class View2 needs to be abstract, since \ + // method apply in trait Function1 of type (v1: T1)R is not defined + // (Note that T1 does not match Int) + // class View2 extends Alias[Int] { def apply(xs: Int) = xs } + // ^ + // one error found + class View2 extends Alias[Int] { def apply(xs: Int) = xs } +} diff --git a/test/files/pos/t8046b.scala b/test/files/pos/t8046b.scala new file mode 100644 index 0000000000..45b99fd7e0 --- /dev/null +++ b/test/files/pos/t8046b.scala @@ -0,0 +1,16 @@ +trait One { + type Op[A] + type Alias = Op[Int] +} + +trait Two extends One { + trait Op[A] extends M[A] + //(a: Alias) => a.value.toChar // okay + // (=> A).asSeenFrom(a.type, trait M): => Int + class View2 extends Alias { value.toChar } // toChar is not a member of type parameter A + // (=> A).asSeenFrom(View2.this.type, trait M): => A + + // override type Alias = Op[Int] // works with this +} + +trait M[A] { def value: A = sys.error("") } diff --git a/test/files/pos/t8046c.scala b/test/files/pos/t8046c.scala new file mode 100644 index 0000000000..f05b4c15b5 --- /dev/null +++ b/test/files/pos/t8046c.scala @@ -0,0 +1,19 @@ +trait One { + type Op[A] + type Alias[A] = Op[A] +} + +trait Three extends One { + trait Op[A] extends (A => A) + + def f1(f: Op[Int]) = f(5) + def f2(f: Alias[Int]) = f(5) + def f3[T <: Op[Int]](f: T) = f(5) + def f4[T <: Alias[Int]](f: T) = f(5) + // ./a.scala:12: error: type mismatch; + // found : Int(5) + // required: T1 + // def f4[T <: Alias[Int]](f: T) = f(5) + // ^ +} + diff --git a/test/files/pos/t8064.flags b/test/files/pos/t8064.flags new file mode 100644 index 0000000000..281f0a10cd --- /dev/null +++ b/test/files/pos/t8064.flags @@ -0,0 +1 @@ +-Yrangepos diff --git a/test/files/pos/t8064/Client_2.scala b/test/files/pos/t8064/Client_2.scala new file mode 100644 index 0000000000..44106782c7 --- /dev/null +++ b/test/files/pos/t8064/Client_2.scala @@ -0,0 +1,8 @@ +object Test { + Macro { + def s = "" + Macro(s): @unchecked + ??? + } +} +// Was: a range position validation error (unpositioned tree)
\ No newline at end of file diff --git a/test/files/pos/t8064/Macro_1.scala b/test/files/pos/t8064/Macro_1.scala new file mode 100644 index 0000000000..dd42950b34 --- /dev/null +++ b/test/files/pos/t8064/Macro_1.scala @@ -0,0 +1,10 @@ +import language.experimental.macros +import scala.reflect.macros.blackbox.Context + +object Macro { + def apply(a: Any): Any = macro impl + + def impl(c: Context)(a: c.Tree): c.Tree = { + c.resetLocalAttrs(a) + } +} diff --git a/test/files/pos/t8064b.flags b/test/files/pos/t8064b.flags new file mode 100644 index 0000000000..281f0a10cd --- /dev/null +++ b/test/files/pos/t8064b.flags @@ -0,0 +1 @@ +-Yrangepos diff --git a/test/files/pos/t8064b/Client_2.scala b/test/files/pos/t8064b/Client_2.scala new file mode 100644 index 0000000000..a7bf2b9fb4 --- /dev/null +++ b/test/files/pos/t8064b/Client_2.scala @@ -0,0 +1,6 @@ +object Test { + Macro { + "".reverse + } +} +// Was: a range position validation error (tree with offset position enclosing tree with range position)
\ No newline at end of file diff --git a/test/files/pos/t8064b/Macro_1.scala b/test/files/pos/t8064b/Macro_1.scala new file mode 100644 index 0000000000..60996bfeca --- /dev/null +++ b/test/files/pos/t8064b/Macro_1.scala @@ -0,0 +1,11 @@ +import language.experimental.macros +import scala.reflect.macros.blackbox.Context + +object Macro { + def apply(a: Any): Any = macro impl + def impl(c: Context)(a: c.Tree): c.Tree = { + import c.universe._ + + q"{$a; true}" + } +} diff --git a/test/files/pos/t8128.scala b/test/files/pos/t8128.scala new file mode 100644 index 0000000000..b6f76691b0 --- /dev/null +++ b/test/files/pos/t8128.scala @@ -0,0 +1,15 @@ +object G { + def unapply(m: Any): Option[_] = Some("") +} + +object H { + def unapplySeq(m: Any): Option[Seq[_]] = None +} + +object Test { + (0: Any) match { + case G(v) => v + case H(v) => v + case _ => + } +} diff --git a/test/files/pos/t8132.scala b/test/files/pos/t8132.scala new file mode 100644 index 0000000000..b4d6fd9441 --- /dev/null +++ b/test/files/pos/t8132.scala @@ -0,0 +1,5 @@ +trait T { + protected def s: String +} + +case class G(override protected val s: String) extends T diff --git a/test/files/pos/t8146a.scala b/test/files/pos/t8146a.scala new file mode 100644 index 0000000000..e4eb8d3fd1 --- /dev/null +++ b/test/files/pos/t8146a.scala @@ -0,0 +1,9 @@ +trait M[+A] + +object Test { + type Inty = Int + def t1( + x: M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[Int @unchecked]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] + ): M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[M[Inty @unchecked]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] + = x +} diff --git a/test/files/pos/t8146b.scala b/test/files/pos/t8146b.scala new file mode 100644 index 0000000000..dd031f66c8 --- /dev/null +++ b/test/files/pos/t8146b.scala @@ -0,0 +1,77 @@ +// non-deterministic type errors, non-termination. +// seems to be due to inconsistent hashing/equality in SubTypePair + +import scala.language.{existentials, implicitConversions} +import scala.annotation.unchecked.uncheckedVariance + +trait Column[T] + +// Turning this into a trait reduces (eliminates?) the likelihood of type errors (but not of non-termination) +abstract class Shape[Level <: ShapeLevel, -Mixed_, Unpacked_, Packed_] + +trait ShapeLevel +trait NestedShapeLevel extends ShapeLevel +trait FlatShapeLevel extends NestedShapeLevel +trait ColumnsShapeLevel extends FlatShapeLevel + +trait ProvenShape[U] + +object ProvenShape { + implicit def proveShapeOf[T, U](v: T)(implicit sh: Shape[_ <: FlatShapeLevel, T, U, _]): ProvenShape[U] = ??? +} + +sealed abstract class HList { + type Self <: HList + type :: [E] = HCons[E, Self] + final def :: [E](elem: E): :: [E] = ??? +} + +final class HCons[+H, +T <: HList](val head: H, val tail: T) extends HList { + type Self = HCons[H @uncheckedVariance, T @uncheckedVariance] +} + +final object HNil extends HList { + type Self = HNil.type +} + +// Success is more likely when not using these aliases +object syntax { + type :: [+H, +T <: HList] = HCons[H, T] + type HNil = HNil.type +} + +class HListBench { + + import syntax._ + + implicit def columnShape[T, Level <: ShapeLevel]: Shape[Level, Column[T], T, Column[T]] = ??? + implicit def provenShape[T, P](implicit shape: Shape[_ <: FlatShapeLevel, T, _, P]): Shape[FlatShapeLevel, ProvenShape[T], T, P] = ??? + final class HListShape[Level <: ShapeLevel, M <: HList, U <: HList, P <: HList](val shapes: Seq[Shape[_ <: ShapeLevel, _, _, _]]) extends Shape[Level, M, U, P] + implicit def hnilShape[Level <: ShapeLevel] = new HListShape[Level, HNil.type, HNil.type, HNil.type](Nil) + implicit def hconsShape[Level <: ShapeLevel, M1, M2 <: HList, U1, U2 <: HList, P1, P2 <: HList] + (implicit s1: Shape[_ <: Level, M1, U1, P1], s2: HListShape[_ <: Level, M2, U2, P2]) = + new HListShape[Level, M1 :: M2, U1 :: U2, P1 :: P2](s1 +: s2.shapes) + + trait A[T] { + def * : ProvenShape[T] + } + + trait B extends A[ + Int :: Int :: Int :: Int :: Int :: + Int :: Int :: Int :: Int :: Int :: + Int :: Int :: Int :: Int :: Int :: + Int :: Int :: Int :: Int :: Int :: + Int :: Int :: Int :: Int :: Int :: + Int :: Int :: HNil ] { + + def c: Column[Int] + + def * = c :: c :: c :: c :: c :: + c :: c :: c :: c :: c :: + c :: c :: c :: c :: c :: + c :: c :: c :: c :: c :: + c :: c :: c :: c :: c :: + c :: c :: HNil + + } +} |