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package mill
package scalalib
import java.io.File
import java.net.URLClassLoader
import java.util.Optional
import ammonite.ops._
import coursier.{Cache, Fetch, MavenRepository, Repository, Resolution, Module => CoursierModule}
import mill.define.Worker
import mill.eval.{PathRef, Result}
import mill.util.{Ctx}
import mill.util.Loose.OSet
import sbt.internal.inc._
import sbt.internal.util.{ConsoleOut, MainAppender}
import sbt.util.LogExchange
import xsbti.compile.{CompilerCache => _, FileAnalysisStore => _, ScalaInstance => _, _}
object CompilationResult {
implicit val jsonFormatter: upickle.default.ReadWriter[CompilationResult] = upickle.default.macroRW
}
// analysisFile is represented by Path, so we won't break caches after file changes
case class CompilationResult(analysisFile: Path, classes: PathRef)
object ZincWorker extends Worker[ZincWorker]{
def make() = new ZincWorker
}
class ZincWorker{
@volatile var scalaClassloaderCache = Option.empty[(Long, ClassLoader)]
@volatile var scalaInstanceCache = Option.empty[(Long, ScalaInstance)]
}
object Lib{
case class MockedLookup(am: File => Optional[CompileAnalysis]) extends PerClasspathEntryLookup {
override def analysis(classpathEntry: File): Optional[CompileAnalysis] =
am(classpathEntry)
override def definesClass(classpathEntry: File): DefinesClass =
Locate.definesClass(classpathEntry)
}
def grepJar(classPath: OSet[Path], s: String) = {
classPath
.find(_.toString.endsWith(s))
.getOrElse(throw new Exception("Cannot find " + s))
.toIO
}
def compileScala(zincWorker: ZincWorker,
scalaVersion: String,
sources: OSet[Path],
compileClasspath: OSet[Path],
compilerClasspath: OSet[Path],
pluginClasspath: OSet[Path],
compilerBridge: Path,
scalacOptions: Seq[String],
scalacPluginClasspath: OSet[Path],
javacOptions: Seq[String],
upstreamCompileOutput: Seq[CompilationResult])
(implicit ctx: Ctx): CompilationResult = {
val compileClasspathFiles = compileClasspath.map(_.toIO).toArray
val compilerJars = compilerClasspath.toArray.map(_.toIO)
val pluginJars = pluginClasspath.toArray.map(_.toIO)
val compilerClassloaderSig = compilerClasspath.map(p => p.toString().hashCode + p.mtime.toMillis).sum
val scalaInstanceSig =
compilerClassloaderSig + pluginClasspath.map(p => p.toString().hashCode + p.mtime.toMillis).sum
val compilerClassLoader = zincWorker.scalaClassloaderCache match{
case Some((k, v)) if k == compilerClassloaderSig => v
case _ =>
val classloader = new URLClassLoader(compilerJars.map(_.toURI.toURL), null)
zincWorker.scalaClassloaderCache = Some((compilerClassloaderSig, classloader))
classloader
}
val scalaInstance = zincWorker.scalaInstanceCache match{
case Some((k, v)) if k == scalaInstanceSig => v
case _ =>
val scalaInstance = new ScalaInstance(
version = scalaVersion,
loader = new URLClassLoader(pluginJars.map(_.toURI.toURL), compilerClassLoader),
libraryJar = grepJar(compilerClasspath, s"scala-library-$scalaVersion.jar"),
compilerJar = grepJar(compilerClasspath, s"scala-compiler-$scalaVersion.jar"),
allJars = compilerJars ++ pluginJars,
explicitActual = None
)
zincWorker.scalaInstanceCache = Some((scalaInstanceSig, scalaInstance))
scalaInstance
}
mkdir(ctx.dest)
val ic = new sbt.internal.inc.IncrementalCompilerImpl()
val logger = {
val consoleAppender = MainAppender.defaultScreen(ConsoleOut.printStreamOut(
ctx.log.outputStream
))
val l = LogExchange.logger("Hello")
LogExchange.unbindLoggerAppenders("Hello")
LogExchange.bindLoggerAppenders("Hello", (consoleAppender -> sbt.util.Level.Info) :: Nil)
l
}
def analysisMap(f: File): Optional[CompileAnalysis] = {
if (f.isFile) {
Optional.empty[CompileAnalysis]
} else {
upstreamCompileOutput.collectFirst {
case CompilationResult(zincPath, classFiles) if classFiles.path.toNIO == f.toPath =>
FileAnalysisStore.binary(zincPath.toIO).get().map[CompileAnalysis](_.getAnalysis)
}.getOrElse(Optional.empty[CompileAnalysis])
}
}
val lookup = MockedLookup(analysisMap)
val zincFile = ctx.dest / 'zinc
val classesDir = ctx.dest / 'classes
val zincIOFile = zincFile.toIO
val classesIODir = classesDir.toIO
val store = FileAnalysisStore.binary(zincIOFile)
val newResult = ic.compile(
ic.inputs(
classpath = classesIODir +: compileClasspathFiles,
sources = sources.filter(_.toIO.exists()).flatMap(ls.rec).filter(x => x.isFile && x.ext == "scala").map(_.toIO).toArray,
classesDirectory = classesIODir,
scalacOptions = (scalacPluginClasspath.map(jar => s"-Xplugin:${jar}") ++ scalacOptions).toArray,
javacOptions = javacOptions.toArray,
maxErrors = 10,
sourcePositionMappers = Array(),
order = CompileOrder.Mixed,
compilers = ic.compilers(
scalaInstance,
ClasspathOptionsUtil.boot,
None,
ZincUtil.scalaCompiler(scalaInstance, compilerBridge.toIO)
),
setup = ic.setup(
lookup,
skip = false,
zincIOFile,
new FreshCompilerCache,
IncOptions.of(),
new ManagedLoggedReporter(10, logger),
None,
Array()
),
pr = {
val prev = store.get()
PreviousResult.of(prev.map(_.getAnalysis), prev.map(_.getMiniSetup))
}
),
logger = logger
)
store.set(
AnalysisContents.create(
newResult.analysis(),
newResult.setup()
)
)
CompilationResult(zincFile, PathRef(classesDir))
}
def resolveDependencies(repositories: Seq[Repository],
scalaVersion: String,
scalaBinaryVersion: String,
deps: TraversableOnce[Dep],
sources: Boolean = false): Result[OSet[PathRef]] = {
val flattened = deps.map{
case Dep.Java(dep) => dep
case Dep.Scala(dep) =>
dep.copy(module = dep.module.copy(name = dep.module.name + "_" + scalaBinaryVersion))
case Dep.Point(dep) =>
dep.copy(module = dep.module.copy(name = dep.module.name + "_" + scalaVersion))
}.toSet
val start = Resolution(flattened)
val fetch = Fetch.from(repositories, Cache.fetch())
val resolution = start.process.run(fetch).unsafePerformSync
val errs = resolution.metadataErrors
if(errs.nonEmpty) {
val header =
s"""|
|Resolution failed for ${errs.length} modules:
|--------------------------------------------
|""".stripMargin
val errLines = errs.map {
case ((module, vsn), errMsgs) => s" ${module.trim}:$vsn \n\t" + errMsgs.mkString("\n\t")
}.mkString("\n")
val msg = header + errLines + "\n"
Result.Failure(msg)
} else {
val sourceOrJar =
if (sources) resolution.classifiersArtifacts(Seq("sources"))
else resolution.artifacts
val localArtifacts: Seq[File] = scalaz.concurrent.Task
.gatherUnordered(sourceOrJar.map(Cache.file(_).run))
.unsafePerformSync
.flatMap(_.toOption)
OSet.from(
localArtifacts.map(p => PathRef(Path(p), quick = true)).filter(_.path.ext == "jar")
)
}
}
def scalaCompilerIvyDeps(scalaVersion: String) = OSet[Dep](
Dep.Java("org.scala-lang", "scala-compiler", scalaVersion),
Dep.Java("org.scala-lang", "scala-reflect", scalaVersion)
)
def scalaRuntimeIvyDeps(scalaVersion: String) = OSet[Dep](
Dep.Java("org.scala-lang", "scala-library", scalaVersion)
)
def compilerBridgeIvyDep(scalaVersion: String) =
Dep.Point(coursier.Dependency(coursier.Module("com.lihaoyi", "mill-bridge"), "0.1", transitive = false))
val DefaultShellScript: Seq[String] = Seq(
"#!/usr/bin/env sh",
"exec java -jar \"$0\" \"$@\""
)
}
|
