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|
package cbt
import java.io.File
import java.net.URL
import java.nio.file.Files
import java.nio.file.attribute.FileTime
trait Dotty extends BaseBuild{
def dottyVersion: String = "0.1-20160926-ec28ea1-NIGHTLY"
def dottyOptions: Seq[String] = Seq()
override def scalaTarget: File = target ++ s"/dotty-$dottyVersion"
private lazy val dottyLib = new DottyLib(
logger, context.cbtHasChanged, context.paths.mavenCache,
context.classLoaderCache, dottyVersion = dottyVersion
)
override def compile: Option[File] = taskCache[Dotty]("compile").memoize{
dottyLib.compile(
needsUpdate || context.parentBuild.map(_.needsUpdate).getOrElse(false),
sourceFiles, compileTarget, compileStatusFile, compileClasspath,
dottyOptions
)
}
def doc: ExitCode =
dottyLib.doc(
sourceFiles, compileClasspath, docTarget, dottyOptions
)
override def repl = dottyLib.repl(context.args, classpath)
override def dependencies = Resolver(mavenCentral).bind(
ScalaDependency( "org.scala-lang.modules", "scala-java8-compat", "0.8.0-RC7" )
)
}
class DottyLib(
logger: Logger,
cbtHasChanged: Boolean,
mavenCache: File,
classLoaderCache: ClassLoaderCache,
dottyVersion: String
)(implicit transientCache: java.util.Map[AnyRef,AnyRef]){
val lib = new Lib(logger)
import lib._
private def Resolver(urls: URL*) = MavenResolver(cbtHasChanged, mavenCache, urls: _*)
private lazy val dottyDependency = Resolver(mavenCentral).bindOne(
MavenDependency("ch.epfl.lamp","dotty_2.11",dottyVersion)
)
def repl(args: Seq[String], classpath: ClassPath) = {
consoleOrFail("Use `cbt direct repl` instead")
lib.runMain(
"dotty.tools.dotc.repl.Main",
Seq(
"-bootclasspath",
dottyDependency.classpath.string,
"-classpath",
classpath.string
) ++ args,
dottyDependency.classLoader(classLoaderCache)
)
}
def doc(
sourceFiles: Seq[File],
dependencyClasspath: ClassPath,
docTarget: File,
compileArgs: Seq[String]
): ExitCode = {
if(sourceFiles.isEmpty){
ExitCode.Success
} else {
docTarget.mkdirs
val args = Seq(
// FIXME: can we use compiler dependency here?
"-bootclasspath", dottyDependency.classpath.string, // FIXME: does this break for builds that don't have scalac dependencies?
"-classpath", dependencyClasspath.string, // FIXME: does this break for builds that don't have scalac dependencies?
"-d", docTarget.toString
) ++ compileArgs ++ sourceFiles.map(_.toString)
logger.lib("creating docs for source files "+args.mkString(", "))
val exitCode = redirectOutToErr{
runMain(
"dotty.tools.dottydoc.api.java.Dottydoc",
args,
dottyDependency.classLoader(classLoaderCache),
fakeInstance = true // this is a hack as Dottydoc's main method is not static
)
}
System.err.println("done")
exitCode
}
}
def compile(
needsRecompile: Boolean,
files: Seq[File],
compileTarget: File,
statusFile: File,
classpath: ClassPath,
dottyOptions: Seq[String]
): Option[File] = {
if(classpath.files.isEmpty)
throw new Exception("Trying to compile with empty classpath. Source files: " ++ files.toString)
if( files.isEmpty ){
None
}else{
if( needsRecompile ){
val start = System.currentTimeMillis
val _class = "dotty.tools.dotc.Main"
val dualArgs =
Seq(
"-d", compileTarget.toString
)
val singleArgs = dottyOptions.map( "-S" ++ _ )
val code =
try{
System.err.println("Compiling with Dotty to " ++ compileTarget.toString)
compileTarget.mkdirs
redirectOutToErr{
lib.runMain(
_class,
dualArgs ++ singleArgs ++ Seq(
"-bootclasspath", dottyDependency.classpath.string, // let's put cp last. It so long
"-classpath", classpath.string // let's put cp last. It so long
) ++ files.map(_.toString),
dottyDependency.classLoader(classLoaderCache)
)
}
} catch {
case e: Exception =>
System.err.println(red("Dotty crashed. See https://github.com/lampepfl/dotty/issues. To reproduce run:"))
System.out.println(s"""
java -cp \\
${dottyDependency.classpath.strings.mkString(":\\\n")} \\
\\
${_class} \\
\\
${dualArgs.grouped(2).map(_.mkString(" ")).mkString(" \\\n")} \\
\\
${singleArgs.mkString(" \\\n")} \\
\\
-bootclasspath \\
${dottyDependency.classpath.strings.mkString(":\\\n")} \\
-classpath \\
${classpath.strings.mkString(":\\\n")} \\
\\
${files.sorted.mkString(" \\\n")}
"""
)
ExitCode.Failure
}
if(code == ExitCode.Success){
// write version and when last compilation started so we can trigger
// recompile if cbt version changed or newer source files are seen
write(statusFile, "")//cbtVersion.getBytes)
Files.setLastModifiedTime(statusFile.toPath, FileTime.fromMillis(start) )
} else {
System.exit(code.integer) // FIXME: let's find a better solution for error handling. Maybe a monad after all.
}
}
Some( compileTarget )
}
}
}
|
