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|
/* NSC -- new Scala compiler
* Copyright 2005-2010 LAMP/EPFL
* @author Martin Odersky
*/
// $Id$
package scala.tools.nsc
import java.io.File
import scala.concurrent.SyncVar
import scala.tools.nsc.interactive.{ RefinedBuildManager, SimpleBuildManager }
import scala.tools.nsc.io.AbstractFile
import scala.tools.nsc.reporters.{Reporter, ConsoleReporter}
import scala.tools.nsc.util.{ BatchSourceFile, FakePos } //{Position}
/** The main class for NSC, a compiler for the programming
* language Scala.
*/
object Main extends AnyRef with EvalLoop {
val versionMsg = "Scala compiler " +
Properties.versionString + " -- " +
Properties.copyrightString
val prompt = Properties.residentPromptString
var reporter: ConsoleReporter = _
def error(msg: String) {
reporter.error(/*new Position */FakePos("scalac"),
msg + "\n scalac -help gives more information")
}
/* needed ?? */
//def errors() = reporter.errors
def resident(compiler: Global) {
loop { line =>
val args = line.split(' ').toList
val command = new CompilerCommand(args, new Settings(error), error, true)
new compiler.Run() compile command.files
}
}
def process(args: Array[String]) {
val settings = new Settings(error)
reporter = new ConsoleReporter(settings)
val command = new CompilerCommand(args.toList, settings, error, false)
if (command.settings.version.value)
reporter.info(null, versionMsg, true)
else if (command.settings.Yidedebug.value) {
command.settings.Xprintpos.value = true
command.settings.Yrangepos.value = true
val compiler = new interactive.Global(command.settings, reporter)
import compiler.{ reporter => _, _ }
val sfs = command.files.map(getSourceFile(_))
val reloaded = new SyncVar[Either[Unit, Throwable]]
askReload(sfs, reloaded)
reloaded.get.right.toOption match {
case Some(ex) => reporter.cancelled = true // Causes exit code to be non-0
case None => reporter.reset // Causes other compiler errors to be ignored
}
askShutdown
} else if (command.settings.Ybuilderdebug.value != "none") {
def fileSet(files : List[String]) = Set.empty ++ (files map AbstractFile.getFile)
val buildManager = if (command.settings.Ybuilderdebug.value == "simple")
new SimpleBuildManager(settings)
else
new RefinedBuildManager(settings)
buildManager.addSourceFiles(fileSet(command.files))
// enter resident mode
loop { line =>
val args = line.split(' ').toList
val command = new CompilerCommand(args.toList, settings, error, true)
buildManager.update(fileSet(command.files), Set.empty)
}
} else {
if (command.settings.target.value == "msil") {
val libpath = System.getProperty("msil.libpath")
if (libpath != null)
command.settings.assemrefs.value =
command.settings.assemrefs.value + File.pathSeparator + libpath
}
try {
val compiler = if (command.settings.Yrangepos.value) new interactive.Global(command.settings, reporter)
else new Global(command.settings, reporter)
if (reporter.hasErrors) {
reporter.flush()
return
}
if (command.shouldStopWithInfo) {
reporter.info(null, command.getInfoMessage(compiler), true)
} else {
if (command.settings.resident.value)
resident(compiler)
else if (command.files.isEmpty) {
reporter.info(null, command.usageMsg, true)
reporter.info(null, compiler.pluginOptionsHelp, true)
} else {
val run = new compiler.Run()
run compile command.files
reporter.printSummary()
}
}
} catch {
case ex @ FatalError(msg) =>
if (true || command.settings.debug.value) // !!!
ex.printStackTrace();
reporter.error(null, "fatal error: " + msg)
}
}
}
def main(args: Array[String]) {
process(args)
exit(if (reporter.hasErrors) 1 else 0)
}
}
|
