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Scala Thrift Type Provider

###Usage:

@fromSchema("myThrift.thrift") object ChatIDL

val msg = ChatIDL.Message("Hello")

object MyImpl extends ChatIDL.Communication {
  def ping  = logPingReceived()
  def join(userId: ChatIDL.ID)
}

###More elaborate example

Given this thrift file:

 struct Point {
    1: double x
 }
 
 struct Elem {
    1: i32 x
 }
 
 struct Missing {
    1: bool y
    2: list<string> aa
    3: Elem i
    4: set<bool> bb
    5: map<string, string> cc
 }
 
 union Thing {
    1: Point a
    2: Elem b
    3: Missing c
 }
 
 union OtherThig {
    1: Elem b
    2: string c
    3: Missing d
 }
 
 service Heartbeet {
    string ping(1: string greet, 2: Thing b)
 }

You could use the type provider like this:

 object MyApp extends App {
 
    import typeproviders.rdfs.public._
 
     @fromSchema("/dctype.rdf") object dct
     
     import dct._
     
     val a = Point(4)
     val b = Elem(3)
     val c = Missing(true,List("allo"), Elem(4), Set(true), Map("hey" -> "you"))
     println(a)
     println(b)
     println(a.x)
     
     object MyImpl extends Heartbeet {
        def ping(greet: String, c: Thing): String = "greetings!"
     }
     
     val h: Heartbeet = MyImpl
     h.ping("hello", Thing.a(Point(4)))
 }