Move compiler and compiler tests to compiler dir

1 files changed, 0 insertions, 377 deletions

diff --git a/src/dotty/tools/dotc/core/Phases.scala b/src/dotty/tools/dotc/core/Phases.scala
deleted file mode 100644
index 222e2235d..000000000
--- a/src/dotty/tools/dotc/core/Phases.scala
+++ /dev/null
@@ -1,377 +0,0 @@
-package dotty.tools.dotc
-package core
-
-import Periods._
-import Contexts._
-import dotty.tools.backend.jvm.{LabelDefs, GenBCode}
-import dotty.tools.dotc.core.Symbols.ClassSymbol
-import util.DotClass
-import DenotTransformers._
-import Denotations._
-import Decorators._
-import config.Printers.config
-import scala.collection.mutable.{ListBuffer, ArrayBuffer}
-import dotty.tools.dotc.transform.TreeTransforms.{TreeTransformer, MiniPhase, TreeTransform}
-import dotty.tools.dotc.transform._
-import Periods._
-import typer.{FrontEnd, RefChecks}
-import ast.tpd
-
-trait Phases {
-  self: Context =>
-
-  import Phases._
-
-  def phase: Phase = base.phases(period.firstPhaseId)
-
-  def phasesStack: List[Phase] =
-    if ((this eq NoContext) || !phase.exists) Nil
-    else phase :: outersIterator.dropWhile(_.phase == phase).next.phasesStack
-
-  /** Execute `op` at given phase */
-  def atPhase[T](phase: Phase)(op: Context => T): T =
-    atPhase(phase.id)(op)
-
-  def atNextPhase[T](op: Context => T): T = atPhase(phase.next)(op)
-
-  def atPhaseNotLaterThan[T](limit: Phase)(op: Context => T): T =
-    if (!limit.exists || phase <= limit) op(this) else atPhase(limit)(op)
-
-  def atPhaseNotLaterThanTyper[T](op: Context => T): T =
-    atPhaseNotLaterThan(base.typerPhase)(op)
-
-  def isAfterTyper: Boolean = base.isAfterTyper(phase)
-}
-
-object Phases {
-
-  trait PhasesBase {
-    this: ContextBase =>
-
-    // drop NoPhase at beginning
-    def allPhases = (if (squashedPhases.nonEmpty) squashedPhases else phases).tail
-
-    object NoPhase extends Phase {
-      override def exists = false
-      def phaseName = "<no phase>"
-      def run(implicit ctx: Context): Unit = unsupported("run")
-      def transform(ref: SingleDenotation)(implicit ctx: Context): SingleDenotation = unsupported("transform")
-    }
-
-    object SomePhase extends Phase {
-      def phaseName = "<some phase>"
-      def run(implicit ctx: Context): Unit = unsupported("run")
-    }
-
-    /** A sentinel transformer object */
-    class TerminalPhase extends DenotTransformer {
-      def phaseName = "terminal"
-      def run(implicit ctx: Context): Unit = unsupported("run")
-      def transform(ref: SingleDenotation)(implicit ctx: Context): SingleDenotation =
-        unsupported("transform")
-      override def lastPhaseId(implicit ctx: Context) = id
-    }
-
-    def phasePlan = this.phasesPlan
-    def setPhasePlan(phasess: List[List[Phase]]) = this.phasesPlan = phasess
-
-    /** Squash TreeTransform's beloning to same sublist to a single TreeTransformer
-      * Each TreeTransform gets own period,
-      * whereas a combined TreeTransformer gets period equal to union of periods of it's TreeTransforms
-      */
-    def squashPhases(phasess: List[List[Phase]],
-                             phasesToSkip: List[String], stopBeforePhases: List[String], stopAfterPhases: List[String], YCheckAfter: List[String]): List[Phase] = {
-      val squashedPhases = ListBuffer[Phase]()
-      var prevPhases: Set[Class[_ <: Phase]] = Set.empty
-      val YCheckAll = YCheckAfter.contains("all")
-
-      var stop = false
-      val filteredPhases = phasess.map(_.filter { p =>
-        val pstop = stop
-        stop = stop | stopBeforePhases.contains(p.phaseName) | stopAfterPhases.contains(p.phaseName)
-        !(pstop || stopBeforePhases.contains(p.phaseName) || phasesToSkip.contains(p.phaseName))
-      })
-
-      var i = 0
-
-      while (i < filteredPhases.length) {
-        if (filteredPhases(i).nonEmpty) { //could be empty due to filtering
-          val filteredPhaseBlock = filteredPhases(i)
-          val phaseToAdd =
-            if (filteredPhaseBlock.length > 1) {
-              val phasesInBlock: Set[String] = filteredPhaseBlock.map(_.phaseName).toSet
-              for (phase <- filteredPhaseBlock) {
-                phase match {
-                  case p: MiniPhase =>
-                    val unmetRequirements = p.runsAfterGroupsOf &~ prevPhases
-                    assert(unmetRequirements.isEmpty,
-                      s"${phase.phaseName} requires ${unmetRequirements.mkString(", ")} to be in different TreeTransformer")
-
-                  case _ =>
-                    assert(false, s"Only tree transforms can be squashed, ${phase.phaseName} can not be squashed")
-                }
-              }
-              val block = new TreeTransformer {
-                override def phaseName: String = miniPhases.map(_.phaseName).mkString("TreeTransform:{", ", ", "}")
-                override def miniPhases: Array[MiniPhase] = filteredPhaseBlock.asInstanceOf[List[MiniPhase]].toArray
-              }
-              prevPhases ++= filteredPhaseBlock.map(_.getClazz)
-              block
-            } else { // block of a single phase, no squashing
-              val phase = filteredPhaseBlock.head
-              prevPhases += phase.getClazz
-              phase
-            }
-          squashedPhases += phaseToAdd
-          val shouldAddYCheck = YCheckAfter.containsPhase(phaseToAdd) || YCheckAll
-          if (shouldAddYCheck) {
-            val checker = new TreeChecker
-            squashedPhases += checker
-          }
-        }
-
-        i += 1
-      }
-      squashedPhases.toList
-    }
-
-    /** Use the following phases in the order they are given.
-     *  The list should never contain NoPhase.
-     *  if squashing is enabled, phases in same subgroup will be squashed to single phase.
-     */
-    def usePhases(phasess: List[Phase], squash: Boolean = true) = {
-
-      val flatPhases = collection.mutable.ListBuffer[Phase]()
-
-      phasess.foreach(p => p match {
-        case t: TreeTransformer => flatPhases ++= t.miniPhases
-        case _ => flatPhases += p
-      })
-
-      phases = (NoPhase :: flatPhases.toList ::: new TerminalPhase :: Nil).toArray
-      var phasesAfter:Set[Class[_ <: Phase]] = Set.empty
-      nextDenotTransformerId = new Array[Int](phases.length)
-      denotTransformers = new Array[DenotTransformer](phases.length)
-
-      var phaseId = 0
-      def nextPhaseId = {
-        phaseId += 1
-        phaseId // starting from 1 as NoPhase is 0
-      }
-
-      def checkRequirements(p: Phase) = {
-        val unmetPrecedeRequirements = p.runsAfter -- phasesAfter
-        assert(unmetPrecedeRequirements.isEmpty,
-          s"phase ${p} has unmet requirement: ${unmetPrecedeRequirements.mkString(", ")} should precede this phase")
-        phasesAfter += p.getClazz
-
-      }
-      var i = 0
-
-      while (i < phasess.length) {
-        val phase = phasess(i)
-        phase match {
-          case t: TreeTransformer =>
-            val miniPhases = t.miniPhases
-            miniPhases.foreach{ phase =>
-              checkRequirements(phase)
-              phase.init(this, nextPhaseId)}
-            t.init(this, miniPhases.head.id, miniPhases.last.id)
-          case _ =>
-            phase.init(this, nextPhaseId)
-            checkRequirements(phase)
-        }
-
-        i += 1
-      }
-
-      phases.last.init(this, nextPhaseId) // init terminal phase
-
-      i = phases.length
-      var lastTransformerId = i
-      while (i > 0) {
-        i -= 1
-        val phase = phases(i)
-        phase match {
-          case transformer: DenotTransformer =>
-            lastTransformerId = i
-            denotTransformers(i) = transformer
-          case _ =>
-        }
-        nextDenotTransformerId(i) = lastTransformerId
-      }
-
-      if (squash) {
-        this.squashedPhases = (NoPhase :: phasess).toArray
-      } else {
-        this.squashedPhases = this.phases
-      }
-
-      config.println(s"Phases = ${phases.deep}")
-      config.println(s"nextDenotTransformerId = ${nextDenotTransformerId.deep}")
-    }
-
-    def phaseOfClass(pclass: Class[_]) = phases.find(pclass.isInstance).getOrElse(NoPhase)
-
-    private val cachedPhases = collection.mutable.Set[PhaseCache]()
-    private def cleanPhaseCache = cachedPhases.foreach(_.myPhase = NoPhase)
-
-    /** A cache to compute the phase with given name, which
-     *  stores the phase as soon as phaseNamed returns something
-     *  different from NoPhase.
-     */
-    private class PhaseCache(pclass: Class[_ <: Phase]) {
-      var myPhase: Phase = NoPhase
-      def phase = {
-        if (myPhase eq NoPhase) myPhase = phaseOfClass(pclass)
-        myPhase
-      }
-      cachedPhases += this
-    }
-
-    private val typerCache = new PhaseCache(classOf[FrontEnd])
-    private val picklerCache = new PhaseCache(classOf[Pickler])
-
-    private val refChecksCache = new PhaseCache(classOf[RefChecks])
-    private val elimRepeatedCache = new PhaseCache(classOf[ElimRepeated])
-    private val extensionMethodsCache = new PhaseCache(classOf[ExtensionMethods])
-    private val erasureCache = new PhaseCache(classOf[Erasure])
-    private val elimErasedValueTypeCache = new PhaseCache(classOf[ElimErasedValueType])
-    private val patmatCache = new PhaseCache(classOf[PatternMatcher])
-    private val lambdaLiftCache = new PhaseCache(classOf[LambdaLift])
-    private val flattenCache = new PhaseCache(classOf[Flatten])
-    private val explicitOuterCache = new PhaseCache(classOf[ExplicitOuter])
-    private val gettersCache = new PhaseCache(classOf[Getters])
-    private val genBCodeCache = new PhaseCache(classOf[GenBCode])
-
-    def typerPhase = typerCache.phase
-    def picklerPhase = picklerCache.phase
-    def refchecksPhase = refChecksCache.phase
-    def elimRepeatedPhase = elimRepeatedCache.phase
-    def extensionMethodsPhase = extensionMethodsCache.phase
-    def erasurePhase = erasureCache.phase
-    def elimErasedValueTypePhase = elimErasedValueTypeCache.phase
-    def patmatPhase = patmatCache.phase
-    def lambdaLiftPhase = lambdaLiftCache.phase
-    def flattenPhase = flattenCache.phase
-    def explicitOuterPhase = explicitOuterCache.phase
-    def gettersPhase = gettersCache.phase
-    def genBCodePhase = genBCodeCache.phase
-
-    def isAfterTyper(phase: Phase): Boolean = phase.id > typerPhase.id
-  }
-
-  trait Phase extends DotClass {
-
-    def phaseName: String
-
-    /** List of names of phases that should precede this phase */
-    def runsAfter: Set[Class[_ <: Phase]] = Set.empty
-
-    def run(implicit ctx: Context): Unit
-
-    def runOn(units: List[CompilationUnit])(implicit ctx: Context): List[CompilationUnit] =
-      units.map { unit =>
-        val unitCtx = ctx.fresh.setPhase(this.start).setCompilationUnit(unit)
-        run(unitCtx)
-        unitCtx.compilationUnit
-      }
-
-    def description: String = phaseName
-
-    /** Output should be checkable by TreeChecker */
-    def isCheckable: Boolean = true
-
-    /** Check what the phase achieves, to be called at any point after it is finished.
-     */
-    def checkPostCondition(tree: tpd.Tree)(implicit ctx: Context): Unit = ()
-
-    /** If set, allow missing or superfluous arguments in applications
-     *  and type applications.
-     */
-    def relaxedTyping: Boolean = false
-
-    /** Is this phase the standard typerphase? True for FrontEnd, but
-     *  not for other first phases (such as FromTasty). The predicate
-     *  is tested in some places that perform checks and corrections. It's
-     *  different from isAfterTyper (and cheaper to test).
-     */
-    def isTyper = false
-
-    def exists: Boolean = true
-
-    private var myPeriod: Period = Periods.InvalidPeriod
-    private var myBase: ContextBase = null
-    private var myErasedTypes = false
-    private var myFlatClasses = false
-    private var myRefChecked = false
-    private var mySymbolicRefs = false
-    private var myLabelsReordered = false
-
-
-    /** The sequence position of this phase in the given context where 0
-     * is reserved for NoPhase and the first real phase is at position 1.
-     * -1 if the phase is not installed in the context.
-     */
-    def id = myPeriod.firstPhaseId
-
-    def period = myPeriod
-    def start = myPeriod.firstPhaseId
-    def end = myPeriod.lastPhaseId
-
-    final def erasedTypes = myErasedTypes   // Phase is after erasure
-    final def flatClasses = myFlatClasses   // Phase is after flatten
-    final def refChecked = myRefChecked     // Phase is after RefChecks
-    final def symbolicRefs = mySymbolicRefs // Phase is after ResolveSuper, newly generated TermRefs should be symbolic
-    final def labelsReordered = myLabelsReordered // Phase is after LabelDefs, labels are flattened and owner chains don't mirror this
-
-    protected[Phases] def init(base: ContextBase, start: Int, end:Int): Unit = {
-      if (start >= FirstPhaseId)
-        assert(myPeriod == Periods.InvalidPeriod, s"phase $this has already been used once; cannot be reused")
-      myBase = base
-      myPeriod = Period(NoRunId, start, end)
-      myErasedTypes  = prev.getClass == classOf[Erasure]      || prev.erasedTypes
-      myFlatClasses  = prev.getClass == classOf[Flatten]      || prev.flatClasses
-      myRefChecked   = prev.getClass == classOf[RefChecks]    || prev.refChecked
-      mySymbolicRefs = prev.getClass == classOf[ResolveSuper] || prev.symbolicRefs
-      myLabelsReordered = prev.getClass == classOf[LabelDefs] || prev.labelsReordered
-    }
-
-    protected[Phases] def init(base: ContextBase, id: Int): Unit = init(base, id, id)
-
-    final def <=(that: Phase) =
-      exists && id <= that.id
-
-    final def prev: Phase =
-      if (id > FirstPhaseId) myBase.phases(start - 1) else myBase.NoPhase
-
-    final def next: Phase =
-      if (hasNext) myBase.phases(end + 1) else myBase.NoPhase
-
-    final def hasNext = start >= FirstPhaseId && end + 1 < myBase.phases.length
-
-    final def iterator =
-      Iterator.iterate(this)(_.next) takeWhile (_.hasNext)
-
-    override def toString = phaseName
-  }
-
-  trait NeedsCompanions {
-    def isCompanionNeeded(cls: ClassSymbol)(implicit ctx: Context): Boolean
-  }
-
-  /** Replace all instances of `oldPhaseClass` in `current` phases
-   *  by the result of `newPhases` applied to the old phase.
-   */
-  def replace(oldPhaseClass: Class[_ <: Phase], newPhases: Phase => List[Phase], current: List[List[Phase]]): List[List[Phase]] =
-    current.map(_.flatMap(phase =>
-      if (oldPhaseClass.isInstance(phase)) newPhases(phase) else phase :: Nil))
-
-  /** Dotty deviation: getClass yields Class[_], instead of [Class <: <type of receiver>].
-   *  We can get back the old behavior using this decorator. We should also use the same
-   *  trick for standard getClass.
-   */
-  private implicit class getClassDeco[T](val x: T) extends AnyVal {
-    def getClazz: Class[_ <: T] = x.getClass.asInstanceOf[Class[_ <: T]]
-  }
-}