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/* NSC -- new Scala compiler
* Copyright 2002-2013 LAMP/EPFL
* @author Martin Odersky
*/
package scala.tools.nsc
package reporters
import scala.collection.mutable
import scala.tools.nsc.Settings
import scala.reflect.internal.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 mutable.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) {
severity.count += 1
display(pos, msg, severity)
}
}
else {
val hidden = testAndLog(pos, severity)
if (severity == WARNING && noWarnings) ()
else {
if (!hidden || isPromptSet) {
severity.count += 1
display(pos, msg, severity)
} else if (settings.debug.value) {
severity.count += 1
display(pos, "[ suppressed ] " + 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
}
}
}
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