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package scala.reflect
package api
// [Martin to Eugene] Todo: Needs to be evicted from API
// [Eugene++ to Martin] but how? we need them for macros
trait FrontEnds {
type Position >: Null
trait FrontEnd {
object severity extends Enumeration
class Severity(val id: Int) extends severity.Value {
var count: Int = 0
override def toString() = this match {
case INFO => "INFO"
case WARNING => "WARNING"
case ERROR => "ERROR"
case _ => "<unknown>"
}
}
val INFO = new Severity(0)
val WARNING = new Severity(1)
val ERROR = new Severity(2)
def hasErrors = ERROR.count > 0
def hasWarnings = WARNING.count > 0
case class Info(val pos: Position, val msg: String, val severity: Severity)
val infos = new collection.mutable.LinkedHashSet[Info]
/** Handles incoming info */
def log(pos: Position, msg: String, severity: Severity) {
infos += new Info(pos, msg, severity)
severity.count += 1
display(infos.last)
}
/** Displays incoming info */
def display(info: Info): Unit
/** Services a request to drop into interactive mode */
def interactive(): Unit
/** Refreshes the UI */
def flush(): Unit = {}
/** Resets the reporter */
def reset(): Unit = {
INFO.count = 0
WARNING.count = 0
ERROR.count = 0
infos.clear()
}
}
class SilentFrontEnd extends FrontEnd {
def display(info: Info) {}
def interactive() {}
}
/** Creates a UI-less reporter that simply accumulates all the messages
*/
def mkSilentFrontEnd(): FrontEnd = new SilentFrontEnd()
/** Creates a reporter that prints messages to the console according to the settings.
*
* ``minSeverity'' determines minimum severity of the messages to be printed.
* 0 stands for INFO, 1 stands for WARNING and 2 stands for ERROR.
*/
// todo. untangle warningsAsErrors from Reporters. I don't feel like moving this flag here!
def mkConsoleFrontEnd(minSeverity: Int = 1): FrontEnd
}
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