@import com.astraldb.spec.Definition

@(ctx:Definition)

object Optimizer
{
  val rules = Seq[Rule[LogicalPlan]](
    @for(rule <- ctx.rules){ 
      @rule.safeLabel, }
  )

  def MAX_ITERATIONS = 100

  def rewrite(plan: LogicalPlan): LogicalPlan =
  {
    var current = plan
    var last = plan

    for(i <- 0 until MAX_ITERATIONS)
    {
      for(rule <- rules)
      {
        current = rule(plan)
      }
      if(last.fastEquals(current))
      {
        return current
      }
    }
    return current
  }
}