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Fix #8198: Handle trees with TypedSplice #8200

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Merged
merged 1 commit into from
Feb 5, 2020
Merged

Fix #8198: Handle trees with TypedSplice #8200

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5 changes: 3 additions & 2 deletions compiler/src/dotty/tools/dotc/typer/Applications.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -948,8 +948,9 @@ trait Applications extends Compatibility {
* { val xs = es; e' = e' + args }
*/
def typedOpAssign(implicit ctx: Context): Tree = {
val Apply(Select(lhs, name), rhss) = tree
val lhs1 = typedExpr(lhs)
val (lhs1, name, rhss) = tree match
case Apply(Select(lhs, name), rhss) => (typedExpr(lhs), name, rhss)
case Apply(untpd.TypedSplice(Select(lhs1, name)), rhss) => (lhs1, name, rhss)
val liftedDefs = new mutable.ListBuffer[Tree]
val lhs2 = untpd.TypedSplice(LiftComplex.liftAssigned(liftedDefs, lhs1))
val assign = untpd.Assign(lhs2,
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10 changes: 10 additions & 0 deletions tests/pos/i8198.scala
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Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
trait Eq[A] {
def (x: A) === (y: A): Boolean
def (x: A) /== (y: A): Boolean = !(x === y)
}

case class Id[T](id: T)

given idEq[A](given eqA: Eq[A]): Eq[Id[A]] = new {
def (i1: Id[A]) === (i2: Id[A]) = !(i1.id /== i2.id)
}