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package mill.contrib.bsp
import java.net.URI
import java.util.Collections
import scala.collection.JavaConverters._
import ch.epfl.scala.bsp4j._
import mill.T
import mill.api.Result.Success
import mill.api.{Loose, Strict}
import mill.define.{BaseModule, Ctx, Discover, Module, Segment, Segments, Sources, Target, Task}
import mill.eval._
import mill.eval.Evaluator
import mill.scalajslib.ScalaJSModule
import mill.scalalib.api.Util
import mill.scalanativelib._
import mill.scalalib.{GenIdea, GenIdeaImpl, JavaModule, ScalaModule, TestModule}
import mill.util.DummyLogger
import os.Path
object ModuleUtils {
object dummyModule extends mill.define.ExternalModule {
lazy val millDiscover: Discover[dummyModule.this.type] = Discover[this.type]
}
val dummyEvalautor: Evaluator = new Evaluator(os.pwd / "contrib" / "bsp" / "mill-bs",
os.pwd / "contrib" / "bsp" / "mill-out-bs",
os.pwd / "contrib" / "bsp" / "mill-external-bs",
dummyModule, DummyLogger)
def millModulesToBspTargets(modules: Seq[JavaModule],
rootModule: JavaModule,
evaluator: Evaluator,
supportedLanguages: List[String]): Predef.Map[JavaModule, BuildTarget] = {
val moduleIdMap = getModuleTargetIdMap(modules, evaluator)
var moduleToTarget = Predef.Map[JavaModule, BuildTarget]()
for ( module <- modules ) {
if (module == rootModule) {
moduleToTarget ++= Map(module -> getRootTarget(module, evaluator))
} else {
val dataBuildTarget = computeScalaBuildTarget(module, evaluator)
val capabilities = getModuleCapabilities(module, evaluator)
val buildTargetTag: List[String] = module match {
case m: TestModule => List(BuildTargetTag.TEST)
case m: JavaModule => List(BuildTargetTag.LIBRARY, BuildTargetTag.APPLICATION)
}
val dependencies = module match {
case m: JavaModule => m.moduleDeps.map(dep => moduleIdMap(dep)).toList.asJava
}
val buildTarget = new BuildTarget(moduleIdMap(module),
buildTargetTag.asJava,
supportedLanguages.asJava,
dependencies,
capabilities)
if (module.isInstanceOf[ScalaModule]) {
buildTarget.setDataKind("scala")
}
buildTarget.setData(dataBuildTarget)
buildTarget.setDisplayName(moduleName(module.millModuleSegments))
buildTarget.setBaseDirectory(module.intellijModulePath.toNIO.toAbsolutePath.toUri.toString)
if (!moduleToTarget.contains(module)) moduleToTarget ++= Map(module -> buildTarget)
}
}
moduleToTarget
}
def getRootJavaModule(rootBaseModule: BaseModule): JavaModule = {
implicit val ctx: Ctx = rootBaseModule.millOuterCtx
new JavaModule {
override def millSourcePath: Path = rootBaseModule.millSourcePath
override def sources = T.sources{millSourcePath / "src"}
def out = T.sources{millSourcePath / "out"}
def target = T.sources{millSourcePath / "target"}
//override def sources: Sources = T.sources{millSourcePath}
override def generatedSources: Target[Seq[PathRef]] = T.sources{
out() ++ target()}
}
}
def getRootTarget(rootModule: JavaModule, evaluator: Evaluator): BuildTarget = {
val rootTarget = new BuildTarget(
new BuildTargetIdentifier(rootModule.millSourcePath.toNIO.toAbsolutePath.toUri.toString),
List.empty[String].asJava,
List.empty[String].asJava,
List.empty[BuildTargetIdentifier].asJava,
new BuildTargetCapabilities(false, false, false))
rootTarget.setBaseDirectory(rootModule.millSourcePath.toNIO.toAbsolutePath.toUri.toString)
rootTarget.setDataKind("scala")
rootTarget.setTags(List(BuildTargetTag.LIBRARY, BuildTargetTag.APPLICATION).asJava)
rootTarget.setData(computeScalaBuildTarget(rootModule, evaluator))
val basePath = rootModule.millSourcePath.toIO.toPath
if (basePath.getNameCount >= 1)
rootTarget.setDisplayName(basePath.getName(basePath.getNameCount - 1) + "-root")
else rootTarget.setDisplayName("root")
rootTarget
}
def getModuleCapabilities(module: JavaModule, evaluator: Evaluator): BuildTargetCapabilities = {
val canTest = module match {
case module: TestModule => true
case default => false
}
new BuildTargetCapabilities(true, canTest, true)
}
//TODO: Fix the data field for JavaModule when the bsp specification is updated
def computeScalaBuildTarget(module: JavaModule, evaluator: Evaluator): ScalaBuildTarget = {
module match {
case m: ScalaModule =>
val scalaVersion = evaluateInformativeTask(evaluator, m.scalaVersion, "")
new ScalaBuildTarget(
evaluateInformativeTask(evaluator, m.scalaOrganization, ""),
scalaVersion,
Util.scalaBinaryVersion(scalaVersion),
getScalaTargetPlatform(m),
computeScalaLangDependencies(m, evaluator).
map(pathRef => pathRef.path.toNIO.toAbsolutePath.toUri.toString).
toList.asJava)
case m: JavaModule =>
val scalaVersion = "2.12.8"
new ScalaBuildTarget(
"or.scala-lang",
"2.12.8",
"2.12",
ScalaPlatform.JVM,
List.empty[String].asJava)
}
}
def getTaskResult[T](evaluator: Evaluator, task: Task[T]): Result[Any] = {
evaluator.evaluate(Strict.Agg(task)).results(task)
}
def evaluateInformativeTask[T](evaluator: Evaluator, task: Task[T], defaultValue: T): T = {
val evaluated = evaluator.evaluate(Strict.Agg(task)).results(task)
evaluated match {
case Success(value) => evaluated.asSuccess.get.value.asInstanceOf[T]
case default => defaultValue
}
}
def computeScalaLangDependencies(module: ScalaModule, evaluator: Evaluator): Loose.Agg[PathRef] = {
evaluateInformativeTask(evaluator, module.resolveDeps(module.scalaLibraryIvyDeps), Loose.Agg.empty[PathRef]) ++
evaluateInformativeTask(evaluator, module.scalacPluginClasspath, Loose.Agg.empty[PathRef]) ++
evaluateInformativeTask(evaluator, module.resolveDeps(module.ivyDeps), Loose.Agg.empty[PathRef]).
filter(pathRef => pathRef.path.toNIO.toAbsolutePath.toUri.toString.contains("scala-compiler") ||
pathRef.path.toNIO.toAbsolutePath.toUri.toString.contains("scala-reflect") ||
pathRef.path.toNIO.toAbsolutePath.toUri.toString.contains("scala-library"))
}
def getScalaTargetPlatform(module: ScalaModule): ScalaPlatform = {
module match {
case m: ScalaNativeModule => ScalaPlatform.NATIVE
case m: ScalaJSModule => ScalaPlatform.JS
case m: ScalaModule => ScalaPlatform.JVM
}
}
def getModuleTargetIdMap(modules: Seq[JavaModule], evaluator:Evaluator): Predef.Map[JavaModule, BuildTargetIdentifier] = {
var moduleToTarget = Map[JavaModule, BuildTargetIdentifier]()
for ( module <- modules ) {
moduleToTarget ++= Map(module -> new BuildTargetIdentifier(
module.intellijModulePath.toNIO.toAbsolutePath.toUri.toString
))
}
moduleToTarget
}
// this is taken from mill.scalalib GenIdeaImpl
def moduleName(p: Segments) = p.value.foldLeft(StringBuilder.newBuilder) {
case (sb, Segment.Label(s)) if sb.isEmpty => sb.append(s)
case (sb, Segment.Cross(s)) if sb.isEmpty => sb.append(s.mkString("-"))
case (sb, Segment.Label(s)) => sb.append(".").append(s)
case (sb, Segment.Cross(s)) => sb.append("-").append(s.mkString("-"))
}.mkString.toLowerCase()
}
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