alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Scala example source code file (AbstractReporter.scala)

This example Scala source code file (AbstractReporter.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

abstractreporter, boolean, boolean, error, position, position, reporter, severity, severity, some, string, string, unit, warning

The Scala AbstractReporter.scala source code

/* NSC -- new Scala compiler
 * Copyright 2002-2011 LAMP/EPFL
 * @author Martin Odersky
 */

package scala.tools.nsc
package reporters

import scala.collection.mutable.HashMap
import scala.tools.nsc.Settings
import scala.tools.nsc.util.Position

/**
 * This reporter implements filtering.
 */
abstract class AbstractReporter extends Reporter {
  val settings: Settings
  def display(pos: Position, msg: String, severity: Severity): Unit
  def displayPrompt(): Unit
  
  private val positions = new HashMap[Position, Severity]
  
  override def reset() {
    super.reset
    positions.clear
  }

  private def isVerbose   = settings.verbose.value
  private def noWarnings  = settings.nowarnings.value
  private def isPromptSet = settings.prompt.value

  protected def info0(pos: Position, msg: String, _severity: Severity, force: Boolean) {
    val severity = 
      if (settings.fatalWarnings.value && _severity == WARNING) ERROR
      else _severity
    
    if (severity == INFO) {
      if (isVerbose || force)
        display(pos, msg, severity)
    }
    else {
      val hidden = testAndLog(pos, severity)
      if (severity == WARNING && noWarnings) ()
      else {
        if (!hidden || isPromptSet) display(pos, msg, severity)
        if (isPromptSet) displayPrompt
      }
    }
  }

  /** Logs a position and returns true if it was already logged.
   *  @note  Two positions are considered identical for logging if they have the same point.
   */
  private def testAndLog(pos: Position, severity: Severity): Boolean =
    pos != null && pos.isDefined && { 
      val fpos = pos.focus
      (positions get fpos) match {
        case Some(level) if level >= severity => true
        case _                                => positions += (fpos -> severity) ; false
      }
    }
}

Other Scala examples (source code examples)

Here is a short list of links related to this Scala AbstractReporter.scala source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.