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Simulator.scala
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Simulator.scala
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/*
* Copyright 2021 Arman Bilge
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package schrodinger
import cats.Id
import cats.Monad
import cats.effect.kernel.Sync
import cats.effect.SyncIO
trait Simulator[F[_]: Monad]:
type G[_]
given runtime: Sync[G]
def upgrade[A](fa: F[A]): G[A]
def downgrade[A](ga: G[A]): F[A]
object Simulator extends SimulatorLowPriority:
given [F[_]](using F: Sync[F]): Simulator[F] with
type G[A] = F[A]
given runtime: Sync[G] = F
def upgrade[A](fa: F[A]): G[A] = fa
def downgrade[A](ga: G[A]): F[A] = ga
sealed abstract private[schrodinger] class SimulatorLowPriority:
given Simulator[Id] with
type G[A] = SyncIO[A]
given runtime: Sync[G] = SyncIO.syncForSyncIO
def upgrade[A](a: A): SyncIO[A] = SyncIO.pure(a)
def downgrade[A](ga: SyncIO[A]): A = ga.unsafeRunSync()