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/* NSC -- new Scala compiler
* Copyright 2005-2010 LAMP/EPFL
* @author Martin Odersky
*/
package scala.tools.nsc
import symtab.Flags
abstract class Phase(val prev: Phase) {
type Id = Int
val id: Id = if (prev eq null) 0 else prev.id + 1
/** New flags visible after this phase has completed */
def nextFlags: Long = 0l
/** New flags visible once this phase has started */
def newFlags: Long = 0l
private var fmask: Long =
if (prev eq null) Flags.InitialFlags else prev.flagMask | prev.nextFlags | newFlags
def flagMask: Long = fmask
private var nx: Phase = this
if ((prev ne null) && (prev ne NoPhase)) prev.nx = this
def next: Phase = nx
def name: String
def description: String = name
// Will running with -Ycheck:name work?
def checkable: Boolean = true
def devirtualized: Boolean = false
def specialized: Boolean = false
def erasedTypes: Boolean = false
def flatClasses: Boolean = false
def refChecked: Boolean = false
def keepsTypeParams = true
def run: Unit
override def toString() = name
override def hashCode = id.## + name.##
override def equals(other: Any) = other match {
case x: Phase => id == x.id && name == x.name
case _ => false
}
}
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