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CellValue.scala
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CellValue.scala
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/*
* Copyright 2023 Lucas Satabin
*
* 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.csv.generic.internal
import fs2.data.csv.generic.CsvValue
import shapeless3.deriving.Annotation
import scala.compiletime.*
import scala.deriving.*
trait CellValue[T] {
def value: String
}
object CellValue {
inline given deriveSingleton[T](using m: Mirror.ProductOf[T] { type MirroredElemTypes = EmptyTuple }): CellValue[T] =
summonFrom {
case a: Annotation[CsvValue, T] => new CellValue[T] { def value: String = a().value }
case _ => new CellValue[T] { def value: String = constValue[m.MirroredLabel] }
}
}