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ByOffset.scala
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ByOffset.scala
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/*
* Copyright (c) 2021 Typelevel
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package fabric.search
import fabric._
import fabric.define.DefType
import fabric.rw._
import scala.util.Try
case class ByOffset(offset: Int, direction: OffsetDirection) extends SearchEntry {
override def search(
json: Json,
entries: List[SearchEntry],
jsonPath: JsonPath
): List[JsonPath] = json match {
case Arr(vec) =>
val index = direction match {
case OffsetDirection.FromTop => offset
case OffsetDirection.FromBottom => vec.length - 1 - offset
}
Try(vec(index)).toOption match {
case Some(value) => SearchEntry.search(value, entries, jsonPath \ index)
case None => Nil
}
case _ => Nil
}
}
object ByOffset {
implicit val rw: RW[ByOffset] = RW.from(
r = t => obj("offset" -> t.offset, "direction" -> t.direction.json),
w = j => ByOffset(j("offset").asInt, j("direction").as[OffsetDirection]),
d = DefType.Dynamic
)
}