mirror of https://github.com/sbt/sbt.git
71 lines
2.7 KiB
Scala
71 lines
2.7 KiB
Scala
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/* sbt -- Simple Build Tool
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* Copyright 2008, 2009 Mark Harrah
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*/
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package xsbt
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abstract class Logger extends NotNull
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{
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def getLevel: Level.Value
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def setLevel(newLevel: Level.Value)
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def enableTrace(flag: Boolean)
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def traceEnabled: Boolean
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def atLevel(level: Level.Value) = level.id >= getLevel.id
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def trace(t: => Throwable): Unit
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final def debug(message: => String): Unit = log(Level.Debug, message)
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final def info(message: => String): Unit = log(Level.Info, message)
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final def warn(message: => String): Unit = log(Level.Warn, message)
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final def error(message: => String): Unit = log(Level.Error, message)
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def success(message: => String): Unit
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def log(level: Level.Value, message: => String): Unit
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def control(event: ControlEvent.Value, message: => String): Unit
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def logAll(events: Seq[LogEvent]): Unit
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/** Defined in terms of other methods in Logger and should not be called from them. */
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final def log(event: LogEvent)
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{
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event match
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{
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case s: Success => success(s.msg)
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case l: Log => log(l.level, l.msg)
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case t: Trace => trace(t.exception)
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case setL: SetLevel => setLevel(setL.newLevel)
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case setT: SetTrace => enableTrace(setT.enabled)
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case c: ControlEvent => control(c.event, c.msg)
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}
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}
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}
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sealed trait LogEvent extends NotNull
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final class Success(val msg: String) extends LogEvent
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final class Log(val level: Level.Value, val msg: String) extends LogEvent
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final class Trace(val exception: Throwable) extends LogEvent
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final class SetLevel(val newLevel: Level.Value) extends LogEvent
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final class SetTrace(val enabled: Boolean) extends LogEvent
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final class ControlEvent(val event: ControlEvent.Value, val msg: String) extends LogEvent
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object ControlEvent extends Enumeration
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{
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val Start, Header, Finish = Value
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}
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/** An enumeration defining the levels available for logging. A level includes all of the levels
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* with id larger than its own id. For example, Warn (id=3) includes Error (id=4).*/
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object Level extends Enumeration with NotNull
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{
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val Debug = Value(1, "debug")
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val Info = Value(2, "info")
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val Warn = Value(3, "warn")
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val Error = Value(4, "error")
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/** Defines the label to use for success messages. A success message is logged at the info level but
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* uses this label. Because the label for levels is defined in this module, the success
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* label is also defined here. */
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val SuccessLabel = "success"
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// added because elements was renamed to iterator in 2.8.0 nightly
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def levels = Debug :: Info :: Warn :: Error :: Nil
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/** Returns the level with the given name wrapped in Some, or None if no level exists for that name. */
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def apply(s: String) = levels.find(s == _.toString)
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/** Same as apply, defined for use in pattern matching. */
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private[xsbt] def unapply(s: String) = apply(s)
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}
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