korolev.internal.package.scala Maven / Gradle / Ivy
package korolev
import scala.annotation.switch
import scala.collection.AbstractMapView
import scala.collection.MapView
import scala.collection.mutable
package object internal {
private[korolev] implicit final class MapViewConcat[K, +V](val left: MapView[K, V]) extends AnyVal {
def +++[V1 >: V](rightArg: => MapView[K, V1]): MapView[K, V1] =
new AbstractMapView[K, V1] {
private lazy val right = rightArg
def get(key: K): Option[V1] = left
.get(key)
.orElse(right.get(key))
def iterator: Iterator[(K, V1)] = left.iterator
.filter { case (k, _) => !right.contains(k) }
.concat(right.iterator)
}
}
private[korolev] def jsonEscape(sb: mutable.StringBuilder, s: String, unicode: Boolean): Unit = {
var i = 0
val len = s.length
while (i < len) {
(s.charAt(i): @switch) match {
case '"' => sb.append("\\\"")
case '\\' => sb.append("\\\\")
case '\b' => sb.append("\\b")
case '\f' => sb.append("\\f")
case '\n' => sb.append("\\n")
case '\r' => sb.append("\\r")
case '\t' => sb.append("\\t")
case c =>
if (c < ' ' || (c > '~' && unicode)) sb.append("\\u%04x" format c.toInt)
else sb.append(c)
}
i += 1
}
()
}
}