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/* NSC -- new Scala compiler
* Copyright 2002-2013 LAMP/EPFL
* @author Martin Odersky
*/
package scala.tools.nsc
package reporters
import scala.reflect.internal.util._
import scala.reflect.internal.util.StringOps._
/**
* This interface provides methods to issue information, warning and
* error messages.
*/
abstract class Reporter {
protected def info0(pos: Position, msg: String, severity: Severity, force: Boolean): Unit
object severity extends Enumeration
class Severity(val id: Int) extends severity.Value {
var count: Int = 0
}
val INFO = new Severity(0) {
override def toString: String = "INFO"
}
val WARNING = new Severity(1) {
override def toString: String = "WARNING"
}
val ERROR = new Severity(2) {
override def toString: String = "ERROR"
}
/** Whether very long lines can be truncated. This exists so important
* debugging information (like printing the classpath) is not rendered
* invisible due to the max message length.
*/
private var _truncationOK: Boolean = true
def truncationOK = _truncationOK
def withoutTruncating[T](body: => T): T = {
val saved = _truncationOK
_truncationOK = false
try body
finally _truncationOK = saved
}
private var incompleteHandler: (Position, String) => Unit = null
def incompleteHandled = incompleteHandler != null
def withIncompleteHandler[T](handler: (Position, String) => Unit)(thunk: => T) = {
val saved = incompleteHandler
incompleteHandler = handler
try thunk
finally incompleteHandler = saved
}
var cancelled = false
def hasErrors = ERROR.count > 0 || cancelled
def hasWarnings = WARNING.count > 0
/** For sending a message which should not be labeled as a warning/error,
* but also shouldn't require -verbose to be visible.
*/
def echo(msg: String): Unit = info(NoPosition, msg, true)
def echo(pos: Position, msg: String): Unit = info(pos, msg, true)
/** Informational messages, suppressed unless -verbose or force=true. */
def info(pos: Position, msg: String, force: Boolean): Unit = info0(pos, msg, INFO, force)
/** Warnings and errors. */
def warning(pos: Position, msg: String): Unit = withoutTruncating(info0(pos, msg, WARNING, false))
def error(pos: Position, msg: String): Unit = withoutTruncating(info0(pos, msg, ERROR, false))
def incompleteInputError(pos: Position, msg: String): Unit = {
if (incompleteHandled) incompleteHandler(pos, msg)
else error(pos, msg)
}
def comment(pos: Position, msg: String) { }
def flush() { }
def reset() {
INFO.count = 0
ERROR.count = 0
WARNING.count = 0
cancelled = false
}
// sbt compat
@deprecated("Moved to scala.reflect.internal.util.StringOps", "2.10.0")
def countElementsAsString(n: Int, elements: String): String = StringOps.countElementsAsString(n, elements)
@deprecated("Moved to scala.reflect.internal.util.StringOps", "2.10.0")
def countAsString(n: Int): String = StringOps.countAsString(n)
}
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