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package mill.util
import mill.define.Applicative.ImplicitStub
import scala.annotation.compileTimeOnly
import scala.language.implicitConversions
object Ctx{
@compileTimeOnly("Target.ctx() can only be used with a T{...} block")
@ImplicitStub
implicit def taskCtx: Ctx = ???
object Dest {
implicit def pathToCtx(path: os.Path): Dest = new Dest { def dest = path }
}
trait Dest{
def dest: os.Path
}
trait Log{
def log: Logger
}
trait Home{
def home: os.Path
}
trait Env{
def env: Map[String, String]
}
object Log{
implicit def logToCtx(l: Logger): Log = new Log { def log = l }
}
trait Args{
def args: IndexedSeq[_]
}
def defaultHome = ammonite.ops.home / ".mill" / "ammonite"
}
class Ctx(val args: IndexedSeq[_],
dest0: () => os.Path,
val log: Logger,
val home: os.Path,
val env : Map[String, String])
extends Ctx.Dest
with Ctx.Log
with Ctx.Args
with Ctx.Home
with Ctx.Env {
def dest = dest0()
def length = args.length
def apply[T](index: Int): T = {
if (index >= 0 && index < args.length) args(index).asInstanceOf[T]
else throw new IndexOutOfBoundsException(s"Index $index outside of range 0 - ${args.length}")
}
}
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