/* NSC -- new Scala compiler
* Copyright 2005-2007 LAMP/EPFL
* @author Martin Odersky
*/
// $Id$
package scala.tools.nsc
import scala.tools.nsc.doc.{DocDriver => DocGenerator}
import scala.tools.nsc.reporters.{Reporter, ConsoleReporter}
import scala.tools.nsc.util.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 = "\nnsc> "
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 = List.fromString(line, ' ')
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(List.fromArray(args), settings, error, false)
if (command.settings.version.value)
reporter.info(null, versionMsg, true)
else {
try {
object compiler extends Global(command.settings, reporter)
if (reporter.hasErrors) {
reporter.flush()
return
}
if (command.settings.help.value || command.settings.Xhelp.value) {
if (command.settings.help.value) {
reporter.info(null, command.usageMsg, true)
reporter.info(null, compiler.pluginOptionsHelp, true)
}
if (command.settings.Xhelp.value)
reporter.info(null, command.xusageMsg, true)
} else if (command.settings.showPlugins.value)
reporter.info(null, compiler.pluginDescriptions, true)
else if (command.settings.showPhases.value)
reporter.info(null, compiler.phaseDescriptions, 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
if (command.settings.doc.value) {
object generator extends DocGenerator {
val global: compiler.type = compiler
def settings = command.settings
}
generator.process(run.units)
}
reporter.printSummary()
}
}
} catch {
case ex @ FatalError(msg) =>
if (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)
}
}