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/* NSC -- new Scala compiler
* Copyright 2002-2007 LAMP/EPFL
* @author Martin Odersky
*/
// $Id$
package scala.tools.nsc.reporters
import scala.tools.nsc.util.Position
/**
* This interface provides methods to issue information, warning and
* error messages.
*/
abstract class Reporter {
abstract class Severity(val code: Int)
object INFO extends Severity(0)
object WARNING extends Severity(1)
object ERROR extends Severity(2)
def reset: Unit = {
errors = 0
warnings = 0
cancelled = false
}
def count(severity: Severity): Int = severity match {
case ERROR => errors
case WARNING => warnings
case INFO => 0
}
def incr(severity: Severity): Unit = severity match {
case ERROR => errors = errors + 1
case WARNING => warnings = warnings + 1
case INFO => {}
}
var errors : Int = 0
var warnings : Int = 0
var cancelled: boolean = false
def hasErrors: boolean = errors != 0 || cancelled
protected def info0(pos: Position, msg: String, severity: Severity, force: Boolean): Unit
def info(pos: Position, msg: String, force: Boolean): Unit = info0(pos, msg, INFO , force)
def warning(pos: Position, msg: String ): Unit = info0(pos, msg, WARNING, false)
def error(pos: Position, msg: String ): Unit = info0(pos, msg, ERROR, false)
/** An error that could possibly be fixed if the unit were longer.
* This is used, for example, when the interpreter tries
* to distinguish fatal errors from those that are due to
* needing more lines of input from the user.
*/
var incompleteInputError: (Position, String) => Unit = error
def withIncompleteHandler[T](handler: (Position, String) => Unit)(thunk: => T) = {
val savedHandler = incompleteInputError
try {
incompleteInputError = handler
thunk
} finally {
incompleteInputError = savedHandler
}
}
}
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