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Add Yield Dsl for continuation #514

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Add Yield Dsl for continuation #514

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15 changes: 14 additions & 1 deletion keywords-Yield/src/main/scala/com/thoughtworks/dsl/keywords/Yield.scala
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Original file line number Diff line number Diff line change
@@ -1,10 +1,10 @@
package com.thoughtworks.dsl
package keywords
import Dsl.!!
import Dsl.AsKeyword
import scala.collection._
import scala.language.implicitConversions

import com.thoughtworks.dsl.Dsl
import com.thoughtworks.dsl.keywords.Yield.From

import scala.collection._
Expand Down Expand Up @@ -198,4 +198,17 @@ object Yield extends LowPriorityYield0 {
}
}

// TODO: Shift Dsl for stack safety
given [
Element,
LeftDomain,
RightDomain >: CC[Element] <: collection.SeqOps[Element, CC, _],
CC[_]
]: Dsl[Yield[Element], LeftDomain !! RightDomain, Unit] = {
(keyword: Yield[Element], generateTail) => handler =>
generateTail(()) { tail =>
handler(keyword +: tail)
}
}

}