fs2.data.pattern.Skeleton.scala Maven / Gradle / Ivy
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/*
* Copyright 2024 fs2-data Project
*
* 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 fs2.data.pattern
sealed trait Skeleton[Expr, Tag] {
final def isTrivial: Boolean = this match {
case Skeleton.Wildcard(_) => true
case Skeleton.Guard(None) => true
case _ => false
}
}
object Skeleton {
case class Wildcard[Expr, Tag](hasGuard: Boolean) extends Skeleton[Expr, Tag]
case class Constructor[Expr, Tag](tag: Tag, args: List[RawSkeleton[Expr, Tag]], hasGuard: Boolean)
extends Skeleton[Expr, Tag]
case class Guard[Expr, Tag](guard: Option[Expr]) extends Skeleton[Expr, Tag]
def noArgConstructor[Expr, Tag](tag: Tag): Skeleton[Expr, Tag] =
Constructor(tag, Nil, false)
def wildcard[Expr, Tag]: Skeleton[Expr, Tag] = Wildcard(false)
}