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Improve SettingsExample to allow orthogonal scopes (like projects/tasks) at a certain nestIndex

This commit is contained in:
Dan Sanduleac 2014-05-01 03:09:50 +01:00
parent 767e2487d0
commit eb93fdd7a6
1 changed files with 4 additions and 4 deletions
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8
util/collection/src/test/scala/SettingsExample.scala
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@ -3,7 +3,7 @@ package sbt
/** Define our settings system */
// A basic scope indexed by an integer.
final case class Scope(index: Int)
final case class Scope(nestIndex: Int, idAtIndex: Int = 0)
// Extend the Init trait.
// (It is done this way because the Scope type parameter is used everywhere in Init.
@ -14,12 +14,12 @@ object SettingsExample extends Init[Scope]
{
// Provides a way of showing a Scope+AttributeKey[_]
val showFullKey: Show[ScopedKey[_]] = new Show[ScopedKey[_]] {
def apply(key: ScopedKey[_]) = key.scope.index + "/" + key.key.label
def apply(key: ScopedKey[_]) = s"${key.scope.nestIndex}(${key.scope.idAtIndex})/${key.key.label}"
}
// A sample delegation function that delegates to a Scope with a lower index.
val delegates: Scope => Seq[Scope] = { case s @ Scope(index) =>
s +: (if(index <= 0) Nil else delegates(Scope(index-1)) )
val delegates: Scope => Seq[Scope] = { case s @ Scope(index, proj) =>
s +: (if(index <= 0) Nil else { (if (proj > 0) List(Scope(index)) else Nil) ++: delegates(Scope(index-1)) })
}
// Not using this feature in this example.