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Merge pull request #4631 from eatkins/previous 

Allow calling TaskKey.previous in input tasks
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eugene yokota 2019-04-25 22:48:35 -04:00 committed by GitHub
parent 3269eae533 81ce14d58c
commit 42bc2ea04d
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3 changed files with 16 additions and 0 deletions
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1
main-settings/src/main/scala/sbt/std/TaskMacro.scala
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@ -450,6 +450,7 @@ object TaskMacro {
def expand(nme: String, tpe: Type, tree: Tree): Converted[c.type] = nme match {
case WrapInitTaskName => Converted.Success(wrapInitTask(tree)(c.WeakTypeTag(tpe)))
case WrapPreviousName => Converted.Success(wrapInitTask(tree)(c.WeakTypeTag(tpe)))
case ParserInput.WrapInitName => Converted.Success(wrapInitParser(tree)(c.WeakTypeTag(tpe)))
case WrapInitInputName => Converted.Success(wrapInitInput(tree)(c.WeakTypeTag(tpe)))
case WrapInputName => Converted.Success(wrapInput(tree)(c.WeakTypeTag(tpe)))

10
sbt/src/sbt-test/actions/previous-in-input-task/build.sbt Normal file
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@ -0,0 +1,10 @@
import sjsonnew.BasicJsonProtocol._
val cacheTask = taskKey[Int]("task")
cacheTask := 1
val checkTask = inputKey[Unit]("validate that the correct value is set by cacheTask")
checkTask := {
val expected = Def.spaceDelimited("").parsed.head.toInt
assert(cacheTask.previous.getOrElse(0) == expected)
}

5
sbt/src/sbt-test/actions/previous-in-input-task/test Normal file
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@ -0,0 +1,5 @@
> checkTask 0
> cacheTask
> checkTask 1