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/* NSC -- new Scala compiler
* Copyright 2007 LAMP/EPFL
* @author Lex Spoon
*/
// $Id$
package scala.tools.nsc
/** A command for ScriptRunner */
class GenericRunnerCommand(allargs: List[String], error: String => Unit) {
def this(allargs: List[String]) =
this(allargs, str => Console.println("Error: " + str))
/** name of the command */
val cmdName = "scala"
/** name of the associated compiler command */
val compCmdName = "scalac"
/** Settings specified by this command */
val settings = new GenericRunnerSettings(error)
/** Whether the command was parsed correctly */
var ok = true
/** What to run. If it is None, then the interpreter should be started */
var thingToRun: Option[String] = None
/** Arguments to pass to the object or script to run */
var arguments: List[String] = Nil
private def parseArguments: Unit = {
var args = allargs
while (!args.isEmpty && ok && args.head.startsWith("-")) {
val args0 = args
for (setting <- settings.allSettings)
if (args eq args0)
args = setting.tryToSet(args)
if (args eq args0) {
error("bad option: '" + args.head + "'")
ok = false
}
}
if (!args.isEmpty) {
thingToRun = Some(args.head)
arguments = args.tail
}
}
parseArguments
val usageMessage = {
cmdName + " [ <option> ]... [<torun> <arguments>]\n" +
"\n" +
"All options to "+compCmdName+" are allowed. See "+compCmdName+" -help.\n" +
"\n" +
"<torun>, if present, is an object or script file to run.\n" +
"If no <torun> is present, run an interactive shell.\n" +
"\n" +
"Option -howtorun allows explicitly specifying how to run <torun>:\n" +
" script: it is a script file\n" +
" object: it is an object name\n" +
" guess: (the default) try to guess\n" +
"\n" +
"Option -savecompiled requests that the compiled script be saved\n" +
"for future use.\n" +
"\n" +
"Option -nocompdaemon requests that the fsc offline compiler not be used.\n" +
"\n" +
"Option -Dproperty=value sets a Java system property.\n"
}
}
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