phobos

Phobos is an XML data-binding library based on stream parsing. It depends only on aalto-xml for parsing.

Scala 2.12, 2.13 and 3 are supported. See Supported Scala versions for more details.

QuickStart

Add phobos-core to your dependencies:

libraryDependencies += "dev.valentiay" %% "phobos-core" % "0.24.0"

Then try this code out in sbt console or in a separate source file:

import phobos.decoding._
import phobos.encoding._
import phobos.syntax._
import phobos.derivation.semiauto._

case class TravelPoint(country: String, city: String)
object TravelPoint {
  implicit val travelPointElementEncoder: ElementEncoder[TravelPoint] = deriveElementEncoder
  implicit val travelPointElementDecoder: ElementDecoder[TravelPoint] = deriveElementDecoder
}

case class Price(@attr currency: String, @text value: Double)
object Price {
  implicit val priceElementEncoder: ElementEncoder[Price] = deriveElementEncoder
  implicit val priceElementDecoder: ElementDecoder[Price] = deriveElementDecoder
}

case class Journey(price: Price, departure: TravelPoint, arrival: TravelPoint)
object Journey {
  implicit val journeyXmlEncoder: XmlEncoder[Journey] = deriveXmlEncoder("journey")
  implicit val journeyXmlDecoder: XmlDecoder[Journey] = deriveXmlDecoder("journey")
}


val journey =
  Journey(
    price = Price("EUR", 1000.0),
    departure = TravelPoint("France", "Marcelle"),
    arrival = TravelPoint("Germany", "Munich")
  )

val xml = XmlEncoder[Journey].encode(journey)
println(xml)

val decodedJourney = xml.flatMap(XmlDecoder[Journey].decode(_))
println(decodedJourney)

assert(Right(journey) == decodedJourney)

Please see phobos wiki for explanation of the syntax and more details.

Performance

Performance details can be found out in phobos-benchmark repository.

Modules

There are several additional modules for some specific cases. These modules could be added with command below:

libraryDependencies += "dev.valentiay" %% "phobos-<module>" % "0.24.0"

Where <module> is module name.

Module name	Functionality
ast	Support for parsing XML into AST
akka-http	Marshallers and unmarshallers for akka-http
akka-stream	Streaming decoding support for akka-stream
cats	Cats instances
derevo	Separate derivation of encoders and decoders separately using derevo annotations (e.g. @derive(xmlEncoder("foo")))
enumeratum	Support for enumeratum enums
fs2	Streaming decoding support (Stream[F, Array[Byte]] => G[A]). Latest fs2 version (fs2 3.x, cats effect 3.x)
fs2-ce2	Streaming decoding support (Stream[F, Array[Byte]] => G[A]). Same as fs2 module, but for fs2 version 2.x using cats effect 2.x
monix	Streaming decoding support (Observable[Array[Byte]] => Task[A])
refined	Support for refined

Supported Scala versions

Most modules support Scala 2.12, 2.13 and 3. Dependencies for some modules don't support Scala 3, thus these modules support only Scala 2.x.

Detailed information about supported Scala versions is in the table below. Available versions for modules are marked with ✓.

Module name	2.12	2.13	3
core	✓	✓	✓
akka-http	✓	✓
akka-stream	✓	✓	✓
ast	✓	✓
cats	✓	✓	✓
derevo	✓	✓
enumeratum	✓	✓	✓
fs2	✓	✓	✓
fs2-ce2	✓	✓	✓
monix	✓	✓	✓
refined	✓	✓