Provide URI and URI template of a route definition about rho

[bryce-anderson]

+1. I think this should be doable, though the syntax may be a bit different particularly when using the dsl template as a function startParam(start + limit). We'll see what can be done.

[arouel]

A quick sketch how our model of an URI template in http4s could look like.

case class UriTemplate(
  scheme: Option[CaseInsensitiveString] = None,
  authority: Option[Authority] = None,
  path: Option[Path] = Some(Seq()),
  query: Option[Query] = None,
  fragment: Option[Fragment] = None) 

type Path = Seq[PathSegment]
sealed trait PathSegment
case class PathStatic(name: String, value: Option[String]) extends PathSegment
case class PathVar(name: String) extends PathSegment

type Query = Seq[QuerySegment]
sealed trait QuerySegment
case class Param(name: String, value: Seq[String]) extends QuerySegment
case class ParamExp(name: String) extends QuerySegment

type Fragment = Seq[FragmentSegment]
sealed trait FragmentSegment
case class FragmentStatic(name: String) extends FragmentSegment
case class FragmentExp(name: String) extends FragmentSegment