/
DerivedCsvRowDecoder.scala
37 lines (31 loc) · 1.36 KB
/
DerivedCsvRowDecoder.scala
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
/*
* 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.CsvName
import fs2.data.csv.{CsvRow, CsvRowDecoder, DecoderResult}
import shapeless._
trait DerivedCsvRowDecoder[T] extends CsvRowDecoder[T, String]
object DerivedCsvRowDecoder {
final implicit def productReader[T, Repr <: HList, DefaultRepr <: HList, AnnoRepr <: HList](implicit
gen: LabelledGeneric.Aux[T, Repr],
defaults: Default.AsOptions.Aux[T, DefaultRepr],
annotations: Annotations.Aux[CsvName, T, AnnoRepr],
cc: Lazy[MapShapedCsvRowDecoder.WithDefaults[Repr, DefaultRepr, AnnoRepr]]): DerivedCsvRowDecoder[T] =
new DerivedCsvRowDecoder[T] {
def apply(row: CsvRow[String]): DecoderResult[T] =
cc.value.fromWithDefault(row, defaults(), annotations()).map(gen.from(_))
}
}