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Fix #6435: Collect variables in quoted patterns #6465

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Merged
merged 1 commit into from
May 7, 2019
Merged

Fix #6435: Collect variables in quoted patterns #6465

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8 changes: 8 additions & 0 deletions compiler/src/dotty/tools/dotc/ast/Desugar.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -1550,6 +1550,14 @@ object desugar {
trees foreach collect
case Block(Nil, expr) =>
collect(expr)
case Quote(expr) =>
new TreeTraverser {
def traverse(tree: untpd.Tree)(implicit ctx: Context): Unit = tree match {
case Splice(expr) => collect(expr)
case TypSplice(expr) => collect(expr)
case _ => traverseChildren(tree)
}
}.traverse(expr)
case _ =>
}
collect(tree)
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12 changes: 12 additions & 0 deletions tests/pos/i6435.scala
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Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
class Foo {
import scala.quoted._
import scala.quoted.matching._
def f(sc: quoted.Expr[StringContext]) given tasty.Reflection: Unit = {

val '{ StringContext(${parts}: _*) } = sc
val ps0: Expr[Seq[String]] = parts

val '{ StringContext(${ExprSeq(parts2)}: _*) } = sc
val ps: Seq[Expr[String]] = parts2
}
}