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package mill.scalajslib
import java.io.File
import java.net.URLClassLoader
import mill.define.Discover
import mill.api.Result
import mill.api.Ctx
import mill.{Agg, T}
import mill.scalajslib.api._
class ScalaJSWorker {
private var scalaInstanceCache = Option.empty[(Long, ScalaJSWorkerApi)]
private def bridge(toolsClasspath: Agg[os.Path])
(implicit ctx: Ctx.Home) = {
val classloaderSig =
toolsClasspath.map(p => p.toString().hashCode + os.mtime(p)).sum
scalaInstanceCache match {
case Some((sig, bridge)) if sig == classloaderSig => bridge
case _ =>
val cl = mill.api.ClassLoader.create(
toolsClasspath.map(_.toIO.toURI.toURL).toVector,
getClass.getClassLoader
)
val bridge = cl
.loadClass("mill.scalajslib.worker.ScalaJSWorkerImpl")
.getDeclaredConstructor()
.newInstance()
.asInstanceOf[ScalaJSWorkerApi]
scalaInstanceCache = Some((classloaderSig, bridge))
bridge
}
}
def link(toolsClasspath: Agg[os.Path],
sources: Agg[os.Path],
libraries: Agg[os.Path],
dest: File,
main: Option[String],
fullOpt: Boolean,
moduleKind: ModuleKind)
(implicit ctx: Ctx.Home): Result[os.Path] = {
bridge(toolsClasspath).link(
sources.items.map(_.toIO).toArray,
libraries.items.map(_.toIO).toArray,
dest,
main.orNull,
fullOpt,
moduleKind
).map(os.Path(_))
}
def run(toolsClasspath: Agg[os.Path], config: NodeJSConfig, linkedFile: File)
(implicit ctx: Ctx.Home): Unit = {
bridge(toolsClasspath).run(config, linkedFile)
}
def getFramework(toolsClasspath: Agg[os.Path],
config: NodeJSConfig,
frameworkName: String,
linkedFile: File)
(implicit ctx: Ctx.Home): (() => Unit, sbt.testing.Framework) = {
bridge(toolsClasspath).getFramework(config, frameworkName, linkedFile)
}
}
object ScalaJSWorkerApi extends mill.define.ExternalModule {
def scalaJSWorker = T.worker { new ScalaJSWorker() }
lazy val millDiscover = Discover[this.type]
}
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