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Build.scala
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import java.io.File
import java.nio.file._
import Process._
import Modes._
import ScaladocGeneration._
import com.jsuereth.sbtpgp.PgpKeys
import sbt.Keys._
import sbt._
import complete.DefaultParsers._
import pl.project13.scala.sbt.JmhPlugin
import pl.project13.scala.sbt.JmhPlugin.JmhKeys.Jmh
import sbt.Package.ManifestAttributes
import sbt.PublishBinPlugin.autoImport._
import sbt.plugins.SbtPlugin
import sbt.ScriptedPlugin.autoImport._
import xerial.sbt.pack.PackPlugin
import xerial.sbt.pack.PackPlugin.autoImport._
import xerial.sbt.Sonatype.autoImport._
import com.typesafe.tools.mima.plugin.MimaPlugin.autoImport._
import org.scalajs.sbtplugin.ScalaJSPlugin
import org.scalajs.sbtplugin.ScalaJSPlugin.autoImport._
import sbtbuildinfo.BuildInfoPlugin
import sbtbuildinfo.BuildInfoPlugin.autoImport._
import sbttastymima.TastyMiMaPlugin
import sbttastymima.TastyMiMaPlugin.autoImport._
import scala.util.Properties.isJavaAtLeast
import org.portablescala.sbtplatformdeps.PlatformDepsPlugin.autoImport._
import org.scalajs.linker.interface.{ModuleInitializer, StandardConfig}
object DottyJSPlugin extends AutoPlugin {
import Build._
object autoImport {
val switchToESModules: StandardConfig => StandardConfig =
config => config.withModuleKind(ModuleKind.ESModule)
}
val writePackageJSON = taskKey[Unit](
"Write package.json to configure module type for Node.js")
override def requires: Plugins = ScalaJSPlugin
override def projectSettings: Seq[Setting[_]] = Def.settings(
commonBootstrappedSettings,
/* #11709 Remove the dependency on scala3-library that ScalaJSPlugin adds.
* Instead, in this build, we use `.dependsOn` relationships to depend on
* the appropriate, locally-defined, scala3-library-bootstrappedJS.
*/
libraryDependencies ~= {
_.filter(!_.name.startsWith("scala3-library_sjs1"))
},
// Replace the JVM JUnit dependency by the Scala.js one
libraryDependencies ~= {
_.filter(!_.name.startsWith("junit-interface"))
},
libraryDependencies +=
("org.scala-js" %% "scalajs-junit-test-runtime" % scalaJSVersion % "test").cross(CrossVersion.for3Use2_13),
// Typecheck the Scala.js IR found on the classpath
scalaJSLinkerConfig ~= (_.withCheckIR(true)),
Compile / jsEnvInput := (Compile / jsEnvInput).dependsOn(writePackageJSON).value,
Test / jsEnvInput := (Test / jsEnvInput).dependsOn(writePackageJSON).value,
writePackageJSON := {
val packageType = scalaJSLinkerConfig.value.moduleKind match {
case ModuleKind.NoModule => "commonjs"
case ModuleKind.CommonJSModule => "commonjs"
case ModuleKind.ESModule => "module"
}
val path = target.value / "package.json"
IO.write(path, s"""{"type": "$packageType"}\n""")
},
)
}
object Build {
import ScaladocConfigs._
val referenceVersion = "3.3.1"
val baseVersion = "3.4.2-RC1"
// Versions used by the vscode extension to create a new project
// This should be the latest published releases.
// TODO: Have the vscode extension fetch these numbers from the Internet
// instead of hardcoding them ?
val publishedDottyVersion = referenceVersion
val sbtDottyVersion = "0.5.5"
/** Version against which we check binary compatibility.
*
* This must be the latest published release in the same versioning line.
* For example, if the next version is going to be 3.1.4, then this must be
* set to 3.1.3. If it is going to be 3.1.0, it must be set to the latest
* 3.0.x release.
*/
val previousDottyVersion = "3.4.0-RC3"
/** Version against which we check binary compatibility. */
val ltsDottyVersion = "3.3.0"
object CompatMode {
final val BinaryCompatible = 0
final val SourceAndBinaryCompatible = 1
}
val compatMode = {
val VersionRE = """^\d+\.(\d+).(\d+).*""".r
baseVersion match {
case VersionRE(_, "0") => CompatMode.BinaryCompatible
case _ => CompatMode.SourceAndBinaryCompatible
}
}
/** scala-library version required to compile Dotty.
*
* Both the non-bootstrapped and bootstrapped version should match, unless
* we're in the process of upgrading to a new major version of
* scala-library.
*/
def stdlibVersion(implicit mode: Mode): String = mode match {
case NonBootstrapped => "2.13.12"
case Bootstrapped => "2.13.12"
}
/** Version of the scala-library for which we will generate TASTy.
*
* We should never use a nightly version here to release.
*
* We can use nightly versions to tests the future compatibility in development.
* Nightly versions: https://scala-ci.typesafe.com/ui/native/scala-integration/org/scala-lang
*/
val stdlibBootstrappedVersion = "2.13.12"
val dottyOrganization = "org.scala-lang"
val dottyGithubUrl = "https://github.com/lampepfl/dotty"
val dottyGithubRawUserContentUrl = "https://raw.githubusercontent.com/lampepfl/dotty"
val isRelease = sys.env.get("RELEASEBUILD") == Some("yes")
val dottyVersion = {
def isNightly = sys.env.get("NIGHTLYBUILD") == Some("yes")
if (isRelease)
baseVersion
else if (isNightly)
baseVersion + "-bin-" + VersionUtil.commitDate + "-" + VersionUtil.gitHash + "-NIGHTLY"
else
baseVersion + "-bin-SNAPSHOT"
}
val dottyNonBootstrappedVersion = {
// Make sure sbt always computes the scalaBinaryVersion correctly
val bin = if (!dottyVersion.contains("-bin")) "-bin" else ""
dottyVersion + bin + "-nonbootstrapped"
}
val sbtCommunityBuildVersion = "0.1.0-SNAPSHOT"
val agentOptions = List(
// "-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=5005"
// "-agentpath:/home/dark/opt/yjp-2013-build-13072/bin/linux-x86-64/libyjpagent.so"
// "-agentpath:/Applications/YourKit_Java_Profiler_2015_build_15052.app/Contents/Resources/bin/mac/libyjpagent.jnilib",
// "-XX:+HeapDumpOnOutOfMemoryError", "-Xmx1g", "-Xss2m"
)
// Packages all subprojects to their jars
val packageAll = taskKey[Map[String, String]]("Package everything needed to run tests")
// Run tests with filter through vulpix test suite
val testCompilation = inputKey[Unit]("runs integration test with the supplied filter")
sealed trait Scala2Library
// Use Scala 2 compiled library JAR
object Scala2LibraryJar extends Scala2Library
// Use the TASTy jar from `scala2-library-tasty` in the classpath
// This only works with `scala3-bootstrapped/scalac` and tests in `scala3-bootstrapped`
//
object Scala2LibraryTasty extends Scala2Library
// Use the TASTy jar from `scala2-library-cc-tasty` in the classpath
// This only works with `scala3-bootstrapped/scalac` and tests in `scala3-bootstrapped`
//
object Scala2LibraryCCTasty extends Scala2Library
// Set in SBT with:
// - `set ThisBuild/Build.scala2Library := Build.Scala2LibraryJar` (default)
// - `set ThisBuild/Build.scala2Library := Build.Scala2LibraryTasty`
// - `set ThisBuild/Build.scala2Library := Build.Scala2LibraryCCTasty`
val scala2Library = settingKey[Scala2Library]("Choose which version of the Scala 2 library should be used")
// Used to compile files similar to ./bin/scalac script
val scalac = inputKey[Unit]("run the compiler using the correct classpath, or the user supplied classpath")
// Used to run binaries similar to ./bin/scala script
val scala = inputKey[Unit]("run compiled binary using the correct classpath, or the user supplied classpath")
val repl = taskKey[Unit]("spawns a repl with the correct classpath")
// Compiles the documentation and static site
val genDocs = inputKey[Unit]("run scaladoc to generate static documentation site")
// Settings used to configure the test language server
val ideTestsCompilerVersion = taskKey[String]("Compiler version to use in IDE tests")
val ideTestsCompilerArguments = taskKey[Seq[String]]("Compiler arguments to use in IDE tests")
val ideTestsDependencyClasspath = taskKey[Seq[File]]("Dependency classpath to use in IDE tests")
val fetchScalaJSSource = taskKey[File]("Fetch the sources of Scala.js")
lazy val SourceDeps = config("sourcedeps")
// Settings shared by the build (scoped in ThisBuild). Used in build.sbt
lazy val thisBuildSettings = Def.settings(
organization := dottyOrganization,
organizationName := "LAMP/EPFL",
organizationHomepage := Some(url("http://lamp.epfl.ch")),
// Note: bench/profiles/projects.yml should be updated accordingly.
scalacOptions ++= Seq(
"-feature",
"-deprecation",
"-unchecked",
//"-Wconf:cat=deprecation&msg=Unsafe:s", // example usage
"-Xfatal-warnings", // -Werror in modern usage
"-encoding", "UTF8",
"-language:implicitConversions",
),
(Compile / compile / javacOptions) ++= Seq("-Xlint:unchecked", "-Xlint:deprecation"),
// Avoid various sbt craziness involving classloaders and parallelism
run / fork := true,
Test / fork := true,
Test / parallelExecution := false,
outputStrategy := Some(StdoutOutput),
scala2Library := Scala2LibraryJar,
// enable verbose exception messages for JUnit
(Test / testOptions) += Tests.Argument(TestFrameworks.JUnit, "-a", "-v", "-s"),
)
// Settings shared globally (scoped in Global). Used in build.sbt
lazy val globalSettings = Def.settings(
onLoad := (Global / onLoad).value andThen { state =>
def exists(submodule: String) = {
val path = Paths.get(submodule)
Files.exists(path) && {
val fileStream = Files.list(path)
try fileStream.iterator().hasNext
finally fileStream.close()
}
}
// Copy default configuration from .vscode-template/ unless configuration files already exist in .vscode/
sbt.IO.copyDirectory(new File(".vscode-template/"), new File(".vscode/"), overwrite = false)
state
},
// I find supershell more distracting than helpful
useSuperShell := false,
// Credentials to release to Sonatype
credentials ++= (
for {
username <- sys.env.get("SONATYPE_USER")
password <- sys.env.get("SONATYPE_PW")
} yield Credentials("Sonatype Nexus Repository Manager", "oss.sonatype.org", username, password)
).toList,
PgpKeys.pgpPassphrase := sys.env.get("PGP_PW").map(_.toCharArray()),
PgpKeys.useGpgPinentry := true,
javaOptions ++= {
val ciOptions = // propagate if this is a CI build
sys.props.get("dotty.drone.mem") match {
case Some(prop) => List("-Xmx" + prop)
case _ => List()
}
// Do not cut off the bottom of large stack traces (default is 1024)
"-XX:MaxJavaStackTraceDepth=1000000" :: agentOptions ::: ciOptions
},
excludeLintKeys ++= Set(
// We set these settings in `commonSettings`, if a project
// uses `commonSettings` but overrides `unmanagedSourceDirectories`,
// sbt will complain if we don't exclude them here.
Keys.scalaSource, Keys.javaSource
),
// This is used to download nightly builds of the Scala 2 library in `scala2-library-bootstrapped`
resolvers += "scala-integration" at "https://scala-ci.typesafe.com/artifactory/scala-integration/",
)
lazy val disableDocSetting =
// This is a legacy settings, we should reevalute generating javadocs
Compile / doc / sources := Seq()
lazy val commonSettings = publishSettings ++ Seq(
(Compile / scalaSource) := baseDirectory.value / "src",
(Test / scalaSource) := baseDirectory.value / "test",
(Compile / javaSource) := baseDirectory.value / "src",
(Test / javaSource) := baseDirectory.value / "test",
(Compile / resourceDirectory) := baseDirectory.value / "resources",
(Test / resourceDirectory) := baseDirectory.value / "test-resources",
// Prevent sbt from rewriting our dependencies
scalaModuleInfo ~= (_.map(_.withOverrideScalaVersion(false))),
libraryDependencies += "com.github.sbt" % "junit-interface" % "0.13.3" % Test,
// If someone puts a source file at the root (e.g., for manual testing),
// don't pick it up as part of any project.
sourcesInBase := false,
// For compatibility with Java 9+ module system;
// without Automatic-Module-Name, the module name is derived from the jar file which is invalid because of the _3 suffix.
Compile / packageBin / packageOptions +=
Package.ManifestAttributes(
"Automatic-Module-Name" -> s"${dottyOrganization.replaceAll("-",".")}.${moduleName.value.replaceAll("-",".")}"
)
)
// Settings used for projects compiled only with Java
lazy val commonJavaSettings = commonSettings ++ Seq(
version := dottyVersion,
scalaVersion := referenceVersion,
// Do not append Scala versions to the generated artifacts
crossPaths := false,
// Do not depend on the Scala library
autoScalaLibrary := false,
disableDocSetting
)
// Settings used when compiling dotty (both non-bootstrapped and bootstrapped)
lazy val commonDottySettings = commonSettings ++ Seq(
// Manually set the standard library to use
autoScalaLibrary := false,
classpathOptions ~= (old =>
old
.withAutoBoot(false) // no library on the compiler bootclasspath - we may need a more recent version
.withFilterLibrary(false) // ...instead, we put it on the compiler classpath
),
)
lazy val commonScala2Settings = commonSettings ++ Seq(
scalaVersion := stdlibVersion(Bootstrapped),
moduleName ~= { _.stripSuffix("-scala2") },
version := dottyVersion,
target := baseDirectory.value / ".." / "out" / "scala-2" / name.value,
disableDocSetting
)
// Settings used when compiling dotty with the reference compiler
lazy val commonNonBootstrappedSettings = commonDottySettings ++ Seq(
(Compile / unmanagedSourceDirectories) += baseDirectory.value / "src-non-bootstrapped",
version := dottyNonBootstrappedVersion,
scalaVersion := referenceVersion,
disableDocSetting
)
private lazy val currentYear: String = java.util.Calendar.getInstance().get(java.util.Calendar.YEAR).toString
def scalacOptionsDocSettings(includeExternalMappings: Boolean = true) = {
val extMap = Seq("-external-mappings:" +
(if (includeExternalMappings) ".*scala/.*::scaladoc3::https://dotty.epfl.ch/api/," else "") +
".*java/.*::javadoc::https://docs.oracle.com/javase/8/docs/api/")
Seq(
"-skip-by-regex:.+\\.internal($|\\..+)",
"-skip-by-regex:.+\\.impl($|\\..+)",
"-project-logo", "docs/_assets/images/logo.svg",
"-social-links:" +
"github::https://github.com/lampepfl/dotty," +
"discord::https://discord.com/invite/scala," +
"twitter::https://twitter.com/scala_lang",
// contains special definitions which are "transplanted" elsewhere
// and which therefore confuse Scaladoc when accessed from this pkg
"-skip-by-id:scala.runtime.stdLibPatches",
// MatchCase is a special type that represents match type cases,
// Reflect doesn't expect to see it as a standalone definition
// and therefore it's easier just not to document it
"-skip-by-id:scala.runtime.MatchCase",
"-skip-by-id:dotty.tools.tasty",
"-skip-by-id:dotty.tools.tasty.util",
"-project-footer", s"Copyright (c) 2002-$currentYear, LAMP/EPFL",
"-author",
"-groups",
"-default-template", "static-site-main"
) ++ extMap
}
// Settings used when compiling dotty with a non-bootstrapped dotty
lazy val commonBootstrappedSettings = commonDottySettings ++ NoBloopExport.settings ++ Seq(
// To enable support of scaladoc and language-server projects you need to change this to true and use sbt as your build server
bspEnabled := false,
(Compile / unmanagedSourceDirectories) += baseDirectory.value / "src-bootstrapped",
version := dottyVersion,
scalaVersion := dottyNonBootstrappedVersion,
scalaCompilerBridgeBinaryJar := {
Some((`scala3-sbt-bridge` / Compile / packageBin).value)
},
// Use the same name as the non-bootstrapped projects for the artifacts.
// Remove the `js` suffix because JS artifacts are published using their special crossVersion.
// The order of the two `stripSuffix`es is important, so that
// scala3-library-bootstrappedjs becomes scala3-library.
moduleName ~= { _.stripSuffix("js").stripSuffix("-bootstrapped") },
// Enforce that the only Scala 2 classfiles we unpickle come from scala-library
/*
scalacOptions ++= {
val cp = (dependencyClasspath in `scala3-library` in Compile).value
val scalaLib = findArtifactPath(cp, "scala-library")
Seq("-Yscala2-unpickler", scalaLib)
},
*/
// sbt gets very unhappy if two projects use the same target
target := baseDirectory.value / ".." / "out" / "bootstrap" / name.value,
// Compile using the non-bootstrapped and non-published dotty
managedScalaInstance := false,
scalaInstance := {
val externalLibraryDeps = (`scala3-library` / Compile / externalDependencyClasspath).value.map(_.data).toSet
val externalCompilerDeps = (`scala3-compiler` / Compile / externalDependencyClasspath).value.map(_.data).toSet
// IMPORTANT: We need to use actual jars to form the ScalaInstance and not
// just directories containing classfiles because sbt maintains a cache of
// compiler instances. This cache is invalidated based on timestamps
// however this is only implemented on jars, directories are never
// invalidated.
val tastyCore = (`tasty-core` / Compile / packageBin).value
val scala3Library = (`scala3-library` / Compile / packageBin).value
val scala3Interfaces = (`scala3-interfaces` / Compile / packageBin).value
val scala3Compiler = (`scala3-compiler` / Compile / packageBin).value
val libraryJars = Array(scala3Library) ++ externalLibraryDeps
val compilerJars = Seq(tastyCore, scala3Interfaces, scala3Compiler) ++ (externalCompilerDeps -- externalLibraryDeps)
Defaults.makeScalaInstance(
scalaVersion.value,
libraryJars = libraryJars,
allCompilerJars = compilerJars,
allDocJars = Seq.empty,
state.value,
scalaInstanceTopLoader.value
)
},
// We cannot include scaladoc in the regular `scalaInstance` task because
// it's a bootstrapped-only project, so we would run into a loop since we
// need the output of that task to compile scaladoc. But we can include it
// in the `scalaInstance` of the `doc` task which allows us to run
// `scala3-library-bootstrapped/doc` for example.
doc / scalaInstance := {
val externalDeps = (LocalProject("scaladoc") / Compile / externalDependencyClasspath).value.map(_.data)
val scalaDoc = (LocalProject("scaladoc") / Compile / packageBin).value
val docJars = Array(scalaDoc) ++ externalDeps
val base = scalaInstance.value
val docScalaInstance = Defaults.makeScalaInstance(
version = base.version,
libraryJars = base.libraryJars,
allCompilerJars = base.compilerJars,
allDocJars = docJars,
state.value,
scalaInstanceTopLoader.value
)
// assert that sbt reuses the same compiler class loader
assert(docScalaInstance.loaderCompilerOnly == base.loaderCompilerOnly)
docScalaInstance
},
Compile / doc / scalacOptions ++= scalacOptionsDocSettings()
)
lazy val commonBenchmarkSettings = Seq(
Jmh / bspEnabled := false,
Jmh / run / mainClass := Some("dotty.tools.benchmarks.Bench"), // custom main for jmh:run
javaOptions += "-DBENCH_COMPILER_CLASS_PATH=" + Attributed.data((`scala3-bootstrapped` / Compile / fullClasspath).value).mkString("", File.pathSeparator, ""),
javaOptions += "-DBENCH_CLASS_PATH=" + Attributed.data((`scala3-library-bootstrapped` / Compile / fullClasspath).value).mkString("", File.pathSeparator, "")
)
lazy val commonMiMaSettings = Def.settings(
mimaPreviousArtifacts += {
val thisProjectID = projectID.value
val crossedName = thisProjectID.crossVersion match {
case cv: Disabled => thisProjectID.name
case cv: Binary => s"${thisProjectID.name}_${cv.prefix}3${cv.suffix}"
}
(thisProjectID.organization % crossedName % previousDottyVersion)
},
mimaCheckDirection := (compatMode match {
case CompatMode.BinaryCompatible => "backward"
case CompatMode.SourceAndBinaryCompatible => "both"
}),
mimaExcludeAnnotations += "scala.annotation.experimental",
)
/** Projects -------------------------------------------------------------- */
val dottyCompilerBootstrappedRef = LocalProject("scala3-compiler-bootstrapped")
/** External dependencies we may want to put on the compiler classpath. */
def externalCompilerClasspathTask: Def.Initialize[Task[Def.Classpath]] =
// Even if we're running the non-bootstrapped compiler, we want the
// dependencies of the bootstrapped compiler since we want to put them on
// the compiler classpath, not the JVM classpath.
(dottyCompilerBootstrappedRef / Runtime / externalDependencyClasspath)
// The root project:
// - aggregates other projects so that "compile", "test", etc are run on all projects at once.
// - publishes its own empty artifact "dotty" that depends on "scala3-library" and "scala3-compiler",
// this is only necessary for compatibility with sbt which currently hardcodes the "dotty" artifact name
lazy val scala3 = project.in(file(".")).asDottyRoot(NonBootstrapped)
lazy val `scala3-bootstrapped` = project.asDottyRoot(Bootstrapped)
lazy val `scala3-interfaces` = project.in(file("interfaces")).
settings(commonJavaSettings).
settings(commonMiMaSettings).
settings(
versionScheme := Some("semver-spec"),
mimaForwardIssueFilters := MiMaFilters.Interfaces.ForwardsBreakingChanges,
mimaBackwardIssueFilters := MiMaFilters.Interfaces.BackwardsBreakingChanges,
customMimaReportBinaryIssues("MiMaFilters.Interfaces"),
)
/** Find an artifact with the given `name` in `classpath` */
def findArtifact(classpath: Def.Classpath, name: String): File = classpath
.find(_.get(artifact.key).exists(_.name == name))
.getOrElse(throw new MessageOnlyException(s"Artifact for $name not found in $classpath"))
.data
/** Like `findArtifact` but returns the absolute path of the entry as a string */
def findArtifactPath(classpath: Def.Classpath, name: String): String =
findArtifact(classpath, name).getAbsolutePath
/** Insert UnsafeNulls Import after package */
def insertUnsafeNullsImport(lines: Seq[String]): Seq[String] = {
def recur(ls: Seq[String], foundPackage: Boolean): Seq[String] = ls match {
case Seq(l, rest @ _*) =>
val lt = l.trim()
if (foundPackage) {
if (!(lt.isEmpty || lt.startsWith("package ")))
"import scala.language.unsafeNulls" +: ls
else l +: recur(rest, foundPackage)
} else {
if (lt.startsWith("package ")) l +: recur(rest, true)
else l +: recur(rest, foundPackage)
}
case _ => ls
}
recur(lines, false)
}
/** replace imports of `com.google.protobuf.*` with compiler implemented version */
def replaceProtobuf(lines: List[String]): List[String] = {
def recur(ls: List[String]): List[String] = ls match {
case l :: rest =>
val lt = l.trim()
if (lt.isEmpty || lt.startsWith("package ") || lt.startsWith("import ")) {
val newLine =
if (lt.startsWith("import com.google.protobuf.")) {
if (lt == "import com.google.protobuf.CodedInputStream") {
"import dotty.tools.dotc.semanticdb.internal.SemanticdbInputStream as CodedInputStream"
} else if (lt == "import com.google.protobuf.CodedOutputStream") {
"import dotty.tools.dotc.semanticdb.internal.SemanticdbOutputStream as CodedOutputStream"
} else {
l
}
} else {
l
}
newLine :: recur(rest)
} else {
ls // don't check rest of file
}
case _ => ls
}
recur(lines)
}
// Settings shared between scala3-compiler and scala3-compiler-bootstrapped
lazy val commonDottyCompilerSettings = Seq(
// Note: bench/profiles/projects.yml should be updated accordingly.
Compile / scalacOptions ++= Seq("-Yexplicit-nulls", "-Ysafe-init"),
// Use source 3.3 to avoid fatal migration warnings on scalajs-ir
scalacOptions ++= Seq("-source", "3.3"),
// Generate compiler.properties, used by sbt
(Compile / resourceGenerators) += Def.task {
import java.util._
import java.text._
val file = (Compile / resourceManaged).value / "compiler.properties"
val dateFormat = new SimpleDateFormat("yyyyMMdd-HHmmss")
dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"))
val contents = //2.11.11.v20170413-090219-8a413ba7cc
s"""version.number=${version.value}
|maven.version.number=${version.value}
|git.hash=${VersionUtil.gitHash}
|copyright.string=Copyright 2002-$currentYear, LAMP/EPFL
""".stripMargin
if (!(file.exists && IO.read(file) == contents)) {
IO.write(file, contents)
}
Seq(file)
}.taskValue,
// get libraries onboard
libraryDependencies ++= Seq(
"org.scala-lang.modules" % "scala-asm" % "9.6.0-scala-1", // used by the backend
Dependencies.compilerInterface,
"org.jline" % "jline-reader" % "3.19.0", // used by the REPL
"org.jline" % "jline-terminal" % "3.19.0",
"org.jline" % "jline-terminal-jna" % "3.19.0", // needed for Windows
("io.get-coursier" %% "coursier" % "2.0.16" % Test).cross(CrossVersion.for3Use2_13),
),
// For convenience, change the baseDirectory when running the compiler
Compile / forkOptions := (Compile / forkOptions).value.withWorkingDirectory((ThisBuild / baseDirectory).value),
Compile / run / forkOptions := (Compile / run / forkOptions).value.withWorkingDirectory((ThisBuild / baseDirectory).value),
// And when running the tests
Test / forkOptions := (Test / forkOptions).value.withWorkingDirectory((ThisBuild / baseDirectory).value),
Test / test := {
// Exclude VulpixMetaTests
(Test / testOnly).toTask(" -- --exclude-categories=dotty.VulpixMetaTests").value
},
(Test / testOptions) += Tests.Argument(
TestFrameworks.JUnit,
"--run-listener=dotty.tools.ContextEscapeDetector",
),
// Spawn new JVM in run and test
// Add git-hash used to package the distribution to the manifest to know it in runtime and report it in REPL
packageOptions += ManifestAttributes(("Git-Hash", VersionUtil.gitHash)),
javaOptions ++= {
val log = streams.value.log
val managedSrcDir = {
// Populate the directory
(Compile / managedSources).value
(Compile / sourceManaged).value
}
val externalDeps = externalCompilerClasspathTask.value
val jars = packageAll.value
def libraryPathProperty(jarName: String): Seq[String] =
jars.get(jarName) match {
case Some(jar) =>
Seq(s"-Ddotty.tests.tasties.scalaLibrary=$jar")
case None =>
log.warn("Scala 2 library TASTy is ignored on non-bootstrapped compiler")
Seq.empty
}
val scala2LibraryTasty = scala2Library.value match {
case Scala2LibraryJar => Seq.empty
case Scala2LibraryTasty => libraryPathProperty("scala2-library-tasty")
case Scala2LibraryCCTasty => libraryPathProperty("scala2-library-cc-tasty")
}
scala2LibraryTasty ++ Seq(
"-Ddotty.tests.dottyCompilerManagedSources=" + managedSrcDir,
"-Ddotty.tests.classes.dottyInterfaces=" + jars("scala3-interfaces"),
"-Ddotty.tests.classes.dottyLibrary=" + jars("scala3-library"),
"-Ddotty.tests.classes.dottyCompiler=" + jars("scala3-compiler"),
"-Ddotty.tests.classes.tastyCore=" + jars("tasty-core"),
"-Ddotty.tests.classes.compilerInterface=" + findArtifactPath(externalDeps, "compiler-interface"),
"-Ddotty.tests.classes.scalaLibrary=" + findArtifactPath(externalDeps, "scala-library"),
"-Ddotty.tests.classes.scalaAsm=" + findArtifactPath(externalDeps, "scala-asm"),
"-Ddotty.tests.classes.jlineTerminal=" + findArtifactPath(externalDeps, "jline-terminal"),
"-Ddotty.tests.classes.jlineReader=" + findArtifactPath(externalDeps, "jline-reader"),
)
},
javaOptions ++= Seq(
s"-Ddotty.tools.dotc.semanticdb.test=${(ThisBuild / baseDirectory).value/"tests"/"semanticdb"}",
),
testCompilation := Def.inputTaskDyn {
val args = spaceDelimited("<arg>").parsed
if (args.contains("--help")) {
println(
s"""
|usage: testCompilation [--help] [--from-tasty] [--update-checkfiles] [--failed] [<filter>]
|
|By default runs tests in dotty.tools.dotc.*CompilationTests and dotty.tools.dotc.coverage.*,
|excluding tests tagged with dotty.SlowTests.
|
| --help show this message
| --from-tasty runs tests in dotty.tools.dotc.FromTastyTests
| --update-checkfiles override the checkfiles that did not match with the current output
| --failed re-run only failed tests
| <filter> substring of the path of the tests file
|
""".stripMargin
)
(Test / testOnly).toTask(" not.a.test")
}
else {
val updateCheckfile = args.contains("--update-checkfiles")
val rerunFailed = args.contains("--failed")
val fromTasty = args.contains("--from-tasty")
val args1 = if (updateCheckfile | fromTasty | rerunFailed) args.filter(x => x != "--update-checkfiles" && x != "--from-tasty" && x != "--failed") else args
val test = if (fromTasty) "dotty.tools.dotc.FromTastyTests" else "dotty.tools.dotc.*CompilationTests dotty.tools.dotc.coverage.*"
val cmd = s" $test -- --exclude-categories=dotty.SlowTests" +
(if (updateCheckfile) " -Ddotty.tests.updateCheckfiles=TRUE" else "") +
(if (rerunFailed) " -Ddotty.tests.rerunFailed=TRUE" else "") +
(if (args1.nonEmpty) " -Ddotty.tests.filter=" + args1.mkString(" ") else "")
(Test / testOnly).toTask(cmd)
}
}.evaluated,
Compile / mainClass := Some("dotty.tools.dotc.Main"),
scala := {
val args: List[String] = spaceDelimited("<arg>").parsed.toList
val externalDeps = externalCompilerClasspathTask.value
val jars = packageAll.value
val argsWithDefaultClasspath: List[String] =
if (args.contains("-classpath")) args
else insertClasspathInArgs(args, (baseDirectory.value / ".." / "out" / "default-last-scalac-out.jar").getPath)
val scalaLib = findArtifactPath(externalDeps, "scala-library")
val dottyLib = jars("scala3-library")
def run(args: List[String]): Unit = {
val fullArgs = insertClasspathInArgs(args, List(".", dottyLib, scalaLib).mkString(File.pathSeparator))
runProcess("java" :: fullArgs, wait = true)
}
if (args.isEmpty) {
println("Couldn't run `scala` without args. Use `repl` to run the repl or add args to run the dotty application")
} else if (scalaLib == "") {
println("Couldn't find scala-library on classpath, please run using script in bin dir instead")
} else if (args.contains("-with-compiler")) {
val args1 = argsWithDefaultClasspath.filter(_ != "-with-compiler")
val asm = findArtifactPath(externalDeps, "scala-asm")
val dottyCompiler = jars("scala3-compiler")
val dottyStaging = jars("scala3-staging")
val dottyTastyInspector = jars("scala3-tasty-inspector")
val dottyInterfaces = jars("scala3-interfaces")
val tastyCore = jars("tasty-core")
val compilerInterface = findArtifactPath(externalDeps, "compiler-interface")
run(insertClasspathInArgs(args1, List(dottyCompiler, dottyInterfaces, asm, dottyStaging, dottyTastyInspector, tastyCore, compilerInterface).mkString(File.pathSeparator)))
} else run(argsWithDefaultClasspath)
},
run := scalac.evaluated,
scalac := Def.inputTaskDyn {
val log = streams.value.log
val externalDeps = externalCompilerClasspathTask.value
val jars = packageAll.value
val scalaLib = findArtifactPath(externalDeps, "scala-library")
val scalaLibTastyOpt = jars.get("scala2-library-tasty")
val dottyLib = jars("scala3-library")
val dottyCompiler = jars("scala3-compiler")
val args0: List[String] = spaceDelimited("<arg>").parsed.toList
val decompile = args0.contains("-decompile")
val printTasty = args0.contains("-print-tasty")
val debugFromTasty = args0.contains("-Ythrough-tasty")
val defaultOutputDirectory =
if (printTasty || decompile || debugFromTasty || args0.contains("-d")) Nil else List("-d", (baseDirectory.value / ".." / "out" / "default-last-scalac-out.jar").getPath)
val args = args0.filter(arg => arg != "-repl" && arg != "-decompile" &&
arg != "-with-compiler" && arg != "-Ythrough-tasty" && arg != "-print-tasty")
val main =
if (decompile) "dotty.tools.dotc.decompiler.Main"
else if (printTasty) "dotty.tools.dotc.core.tasty.TastyPrinter"
else if (debugFromTasty) "dotty.tools.dotc.fromtasty.Debug"
else "dotty.tools.dotc.Main"
var extraClasspath = Seq(scalaLib, dottyLib)
scala2Library.value match {
case Scala2LibraryJar =>
case Scala2LibraryTasty =>
jars.get("scala2-library-tasty") match {
case Some(jar) => extraClasspath :+= jar
case None => log.warn("Scala2LibraryTasty is ignored on non-bootstrapped compiler")
};
case Scala2LibraryCCTasty =>
jars.get("scala2-library-cc-tasty") match {
case Some(jar) => extraClasspath :+= jar
case None => log.warn("Scala2LibraryCCTasty is ignored on non-bootstrapped compiler")
}
}
if (decompile && !args.contains("-classpath"))
extraClasspath ++= Seq(".")
if (args0.contains("-with-compiler")) {
if (scalaVersion.value == referenceVersion) {
log.error("-with-compiler should only be used with a bootstrapped compiler")
}
val dottyInterfaces = jars("scala3-interfaces")
val dottyStaging = jars("scala3-staging")
val dottyTastyInspector = jars("scala3-tasty-inspector")
val tastyCore = jars("tasty-core")
val asm = findArtifactPath(externalDeps, "scala-asm")
val compilerInterface = findArtifactPath(externalDeps, "compiler-interface")
extraClasspath ++= Seq(dottyCompiler, dottyInterfaces, asm, dottyStaging, dottyTastyInspector, tastyCore, compilerInterface)
}
val fullArgs = main :: defaultOutputDirectory ::: (if (printTasty) args else insertClasspathInArgs(args, extraClasspath.mkString(File.pathSeparator)))
(Compile / runMain).toTask(fullArgs.mkString(" ", " ", ""))
}.evaluated,
/* Add the sources of scalajs-ir.
* To guarantee that dotty can bootstrap without depending on a version
* of scalajs-ir built with a different Scala compiler, we add its
* sources instead of depending on the binaries.
*/
ivyConfigurations += SourceDeps.hide,
transitiveClassifiers := Seq("sources"),
libraryDependencies +=
("org.scala-js" %% "scalajs-ir" % scalaJSVersion % "sourcedeps").cross(CrossVersion.for3Use2_13),
(Compile / sourceGenerators) += Def.task {
val s = streams.value
val cacheDir = s.cacheDirectory
val trgDir = (Compile / sourceManaged).value / "scalajs-ir-src"
val report = updateClassifiers.value
val scalaJSIRSourcesJar = report.select(
configuration = configurationFilter("sourcedeps"),
module = (_: ModuleID).name.startsWith("scalajs-ir_"),
artifact = artifactFilter(`type` = "src")).headOption.getOrElse {
sys.error(s"Could not fetch scalajs-ir sources")
}
FileFunction.cached(cacheDir / s"fetchScalaJSIRSource",
FilesInfo.lastModified, FilesInfo.exists) { dependencies =>
s.log.info(s"Unpacking scalajs-ir sources to $trgDir...")
if (trgDir.exists)
IO.delete(trgDir)
IO.createDirectory(trgDir)
IO.unzip(scalaJSIRSourcesJar, trgDir)
val sjsSources = (trgDir ** "*.scala").get.toSet
sjsSources.foreach(f => {
val lines = IO.readLines(f)
IO.writeLines(f, insertUnsafeNullsImport(lines))
})
sjsSources
} (Set(scalaJSIRSourcesJar)).toSeq
}.taskValue,
)
def insertClasspathInArgs(args: List[String], cp: String): List[String] = {
val (beforeCp, fromCp) = args.span(_ != "-classpath")
val classpath = fromCp.drop(1).headOption.fold(cp)(_ + File.pathSeparator + cp)
"-classpath" :: classpath :: beforeCp ::: fromCp.drop(2)
}
lazy val nonBootstrappedDottyCompilerSettings = commonDottyCompilerSettings ++ Seq(
// packageAll packages all and then returns a map with the abs location
packageAll := Def.taskDyn { // Use a dynamic task to avoid loops when loading the settings
Def.task {
Map(
"scala3-interfaces" -> (`scala3-interfaces` / Compile / packageBin).value,
"scala3-compiler" -> (Compile / packageBin).value,
"tasty-core" -> (`tasty-core` / Compile / packageBin).value,
// NOTE: Using scala3-library-bootstrapped here is intentional: when
// running the compiler, we should always have the bootstrapped
// library on the compiler classpath since the non-bootstrapped one
// may not be binary-compatible.
"scala3-library" -> (`scala3-library-bootstrapped` / Compile / packageBin).value
).mapValues(_.getAbsolutePath)
}
}.value,
(Test / testOptions) += Tests.Argument(
TestFrameworks.JUnit,
"--exclude-categories=dotty.BootstrappedOnlyTests",
),
// increase stack size for non-bootstrapped compiler, because some code
// is only tail-recursive after bootstrap
(Test / javaOptions) += "-Xss2m"
)
lazy val bootstrappedDottyCompilerSettings = commonDottyCompilerSettings ++ Seq(
javaOptions ++= {
val jars = packageAll.value
Seq(
"-Ddotty.tests.classes.dottyStaging=" + jars("scala3-staging"),
"-Ddotty.tests.classes.dottyTastyInspector=" + jars("scala3-tasty-inspector"),
)
},
packageAll := {
(`scala3-compiler` / packageAll).value ++ Seq(
"scala3-compiler" -> (Compile / packageBin).value.getAbsolutePath,
"scala3-staging" -> (LocalProject("scala3-staging") / Compile / packageBin).value.getAbsolutePath,
"scala3-tasty-inspector" -> (LocalProject("scala3-tasty-inspector") / Compile / packageBin).value.getAbsolutePath,
"tasty-core" -> (LocalProject("tasty-core-bootstrapped") / Compile / packageBin).value.getAbsolutePath,
"scala2-library-tasty" -> (LocalProject("scala2-library-tasty") / Compile / packageBin).value.getAbsolutePath,
"scala2-library-cc-tasty" -> (LocalProject("scala2-library-cc-tasty") / Compile / packageBin).value.getAbsolutePath,
)
},
repl := (Compile / console).value,
Compile / console / scalacOptions := Nil, // reset so that we get stock REPL behaviour! E.g. avoid -unchecked being enabled
)
def dottyCompilerSettings(implicit mode: Mode): sbt.Def.SettingsDefinition =
if (mode == NonBootstrapped) nonBootstrappedDottyCompilerSettings else bootstrappedDottyCompilerSettings
lazy val `scala3-compiler` = project.in(file("compiler")).asDottyCompiler(NonBootstrapped)
lazy val Scala3CompilerCoursierTest = config("scala3CompilerCoursierTest") extend Test
lazy val `scala3-compiler-bootstrapped` = project.in(file("compiler")).asDottyCompiler(Bootstrapped)
.configs(Scala3CompilerCoursierTest)
.settings(
inConfig(Scala3CompilerCoursierTest)(Defaults.testSettings),
Scala3CompilerCoursierTest / scalaSource := baseDirectory.value / "test-coursier",
Scala3CompilerCoursierTest / fork := true,
Scala3CompilerCoursierTest / envVars := Map("DOTTY_BOOTSTRAPPED_VERSION" -> dottyVersion),
Scala3CompilerCoursierTest / unmanagedClasspath += (Scala3CompilerCoursierTest / scalaSource).value,
Scala3CompilerCoursierTest / test := ((Scala3CompilerCoursierTest / test) dependsOn (
publishLocal, // Had to enumarate all deps since calling `scala3-bootstrap` / publishLocal will lead to recursive dependency => stack overflow
`scala3-interfaces` / publishLocal,
dottyLibrary(Bootstrapped) / publishLocal,
tastyCore(Bootstrapped) / publishLocal,
),
).value,
)
def dottyCompiler(implicit mode: Mode): Project = mode match {
case NonBootstrapped => `scala3-compiler`
case Bootstrapped => `scala3-compiler-bootstrapped`
}
// Settings shared between scala3-library, scala3-library-bootstrapped and scala3-library-bootstrappedJS
lazy val dottyLibrarySettings = Seq(
(Compile / scalacOptions) ++= Seq(
// Needed so that the library sources are visible when `dotty.tools.dotc.core.Definitions#init` is called
"-sourcepath", (Compile / sourceDirectories).value.map(_.getAbsolutePath).distinct.mkString(File.pathSeparator),
"-Yexplicit-nulls",
),
(Compile / doc / scalacOptions) ++= ScaladocConfigs.DefaultGenerationSettings.value.settings
)
lazy val `scala3-library` = project.in(file("library")).asDottyLibrary(NonBootstrapped)
lazy val `scala3-library-bootstrapped`: Project = project.in(file("library")).asDottyLibrary(Bootstrapped)
def dottyLibrary(implicit mode: Mode): Project = mode match {
case NonBootstrapped => `scala3-library`
case Bootstrapped => `scala3-library-bootstrapped`
}
/** The dotty standard library compiled with the Scala.js back-end, to produce
* the corresponding .sjsir files.
*
* This artifact must be on the classpath on every "Dotty.js" project.
*
* Currently, only a very small fraction of the dotty library is actually
* included in this project, and hence available to Dotty.js projects. More
* will be added in the future as things are confirmed to be supported.
*/
lazy val `scala3-library-bootstrappedJS`: Project = project.in(file("library-js")).
asDottyLibrary(Bootstrapped).
enablePlugins(DottyJSPlugin).
settings(
libraryDependencies +=
("org.scala-js" %% "scalajs-library" % scalaJSVersion).cross(CrossVersion.for3Use2_13),
Compile / unmanagedSourceDirectories ++=
(`scala3-library-bootstrapped` / Compile / unmanagedSourceDirectories).value,
// Configure the source maps to point to GitHub for releases
scalacOptions ++= {
if (isRelease) {
val baseURI = (LocalRootProject / baseDirectory).value.toURI
val dottyVersion = version.value
Seq(s"-scalajs-mapSourceURI:$baseURI->$dottyGithubRawUserContentUrl/$dottyVersion/")
} else {
Nil
}
},
// Make sure `scala3-bootstrapped/test` doesn't fail on this project for no reason
Test / test := {},
Test / testOnly := {},