Scala example source code file (MainTokenMetric.scala)

This example Scala source code file (MainTokenMetric.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

array, array, consolereporter, consolereporter, eof, fatalerror, fatalerror, global, list, maintokenmetric, unitscanner, unitscanner

The Scala MainTokenMetric.scala source code

/* NSC -- new Scala compiler
 * Copyright 2005-2011 LAMP/EPFL
 * @author  Martin Odersky
 */

package scala.tools.nsc

import scala.tools.nsc.reporters.ConsoleReporter

/** The main class for NSC, a compiler for the programming
 *  language Scala.
 */
object MainTokenMetric {

  private var reporter: ConsoleReporter = _
  
  def tokenMetric(compiler: Global, fnames: List[String]) {
    import compiler.CompilationUnit
    import compiler.syntaxAnalyzer.UnitScanner
    import ast.parser.Tokens.EOF
    var totale = 0
    for (source <- fnames) {
      val s = new UnitScanner(new CompilationUnit(compiler.getSourceFile(source)))
      s.nextToken
      var i = 0
      while (s.token != EOF) {
        i += 1
        s.nextToken
      }
      Console.println(i.toString + " " + source.toString())
      totale += i
    }
    Console.println(totale.toString()+" total")
  }

  def process(args: Array[String]) {
    val settings = new Settings(sys.error)
    reporter = new ConsoleReporter(settings)
    val command = new CompilerCommand(args.toList, settings)
    try {
      val compiler = new Global(command.settings, reporter)
      tokenMetric(compiler, command.files)
    } 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)
    sys.exit(if (reporter.hasErrors) 1 else 0)
  }

}