path: root/src/dotty/tools/dotc/transform/MixinOps.scala

package dotty.tools.dotc
package transform

import core._
import Symbols._, Types._, Contexts._, SymDenotations._, DenotTransformers._, Flags._
import util.Positions._
import SymUtils._
import StdNames._, NameOps._

class MixinOps(cls: ClassSymbol, thisTransform: DenotTransformer)(implicit ctx: Context) {
  import ast.tpd._

  val superCls: Symbol = cls.superClass
  val mixins: List[ClassSymbol] = cls.mixins

  def implementation(member: TermSymbol): TermSymbol =
    member.copy(
      owner = cls,
      name = member.name.stripScala2LocalSuffix,
      flags = member.flags &~ Deferred &~ Module,
      info = cls.thisType.memberInfo(member)).enteredAfter(thisTransform).asTerm

  def superRef(target: Symbol, pos: Position = cls.pos): Tree = {
    val sup = if (target.isConstructor && !target.owner.is(Trait))
      Super(This(cls), tpnme.EMPTY, true)
    else
      Super(This(cls), target.owner.name.asTypeName, false, target.owner)
    //println(i"super ref $target on $sup")
    ast.untpd.Select(sup.withPos(pos), target.name)
      .withType(NamedType.withFixedSym(sup.tpe, target))
    //sup.select(target)
  }

  def forwarder(target: Symbol) = (targs: List[Type]) => (vrefss: List[List[Tree]]) =>
    superRef(target).appliedToTypes(targs).appliedToArgss(vrefss)
}