blob: 5b6599ee746de666e0b8946c223396590f5e2797 (
plain) (
blame)
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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
package xyz.driver.core
import scala.collection.generic.CanBuildFrom
import scala.language.{higherKinds, implicitConversions}
/**
* @author sergey
* @since 9/11/18
*/
package object tagging {
implicit class Taggable[V <: Any](val v: V) extends AnyVal {
def tagged[Tag]: V @@ Tag = v.asInstanceOf[V @@ Tag]
}
}
package tagging {
sealed trait Tagged[+V, +Tag]
object Tagged {
implicit class TaggedOps[V, Tag](val v: V @@ Tag) extends AnyVal {
def tagless: V = v
}
implicit def orderingMagnet[V, Tag](implicit ord: Ordering[V]): Ordering[V @@ Tag] =
ord.asInstanceOf[Ordering[V @@ Tag]]
}
sealed trait Trimmed
object Trimmed {
implicit def apply[V](trimmable: V)(implicit ev: CanBeTrimmed[V]): V @@ Trimmed = {
ev.trim(trimmable).tagged[Trimmed]
}
sealed trait CanBeTrimmed[T] {
def trim(trimmable: T): T
}
implicit object StringCanBeTrimmed extends CanBeTrimmed[String] {
def trim(str: String): String = str.trim()
}
implicit def nameCanBeTrimmed[T]: CanBeTrimmed[Name[T]] = new CanBeTrimmed[Name[T]] {
def trim(name: Name[T]): Name[T] = Name[T](name.value.trim())
}
implicit def option2Trimmed[V: CanBeTrimmed](option: Option[V]): Option[V @@ Trimmed] =
option.map(Trimmed(_))
implicit def coll2Trimmed[T, C[_] <: Traversable[_]](coll: C[T])(
implicit ev: C[T] <:< Traversable[T],
tr: CanBeTrimmed[T],
bf: CanBuildFrom[Nothing, T @@ Trimmed, C[T @@ Trimmed]]): C[T @@ Trimmed] =
ev(coll).map(Trimmed(_)(tr)).to[C]
}
}
|
