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/* NSC -- new Scala compiler
* Copyright 2005-2013 LAMP/EPFL
* @author Martin Odersky
*/
// $Id$
package scala
package reflect.internal
package settings
/** A mutable Settings object.
*/
abstract class MutableSettings extends AbsSettings {
type Setting <: SettingValue
type BooleanSetting <: Setting { type T = Boolean }
type IntSetting <: Setting { type T = Int }
type MultiStringSetting <: Setting { type T = List[String] }
// basically this is a value which remembers if it's been modified
trait SettingValue extends AbsSettingValue {
protected var v: T
protected var setByUser: Boolean = false
def postSetHook(): Unit = ()
def isDefault = !setByUser
def isSetByUser = setByUser
def value: T = v
def value_=(arg: T) = {
setByUser = true
v = arg
postSetHook()
}
/** Returns Some(value) in the case of a value set by user and None otherwise. */
def valueSetByUser: Option[T] = if (isSetByUser) Some(value) else None
}
def Xexperimental: BooleanSetting
def XfullLubs: BooleanSetting
def XnoPatmatAnalysis: BooleanSetting
def Xprintpos: BooleanSetting
def strictInference: BooleanSetting
def Yposdebug: BooleanSetting
def Yrangepos: BooleanSetting
def Yshowsymowners: BooleanSetting
def Yshowsymkinds: BooleanSetting
def breakCycles: BooleanSetting
def debug: BooleanSetting
def developer: BooleanSetting
def explaintypes: BooleanSetting
def overrideObjects: BooleanSetting
def printtypes: BooleanSetting
def uniqid: BooleanSetting
def verbose: BooleanSetting
def YpartialUnification: BooleanSetting
def Yvirtpatmat: BooleanSetting
def Yrecursion: IntSetting
def maxClassfileName: IntSetting
def isScala211: Boolean
def isScala212: Boolean
}
object MutableSettings {
import scala.language.implicitConversions
/** Support the common use case, `if (settings.debug) println("Hello, martin.")` */
@inline implicit def reflectSettingToBoolean(s: MutableSettings#BooleanSetting): Boolean = s.value
}
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