import scala.language.postfixOps
object Test extends dotty.runtime.LegacyApp {
import scala.util.matching.{ Regex, UnanchoredRegex }
val dateP1 = """(\d\d\d\d)-(\d\d)-(\d\d)""".r.unanchored
val dateP2 = """(\d\d\d\d)-(\d\d)-(\d\d)""" r ("year", "month", "day") unanchored
val dateP3 = new Regex("""(\d\d\d\d)-(\d\d)-(\d\d)""", "year", "month", "day") with UnanchoredRegex
val yearStr = "2011"
val dateStr = List(yearStr,"07","15").mkString("-")
def test(msg: String)(strs: Seq[String]): Unit = println("%40s %s".format(msg, strs mkString " "))
test("extract an exact match") {
val dateP1(y,m,d) = dateStr
Seq(List(y,m,d).mkString("-"), dateStr)
}
test("extract from middle of string") {
val dateP1(y,m,d) = "Tested on "+dateStr+"."
Seq(List(y,m,d).mkString("-"), dateStr)
}
test("extract from middle of string (P2)") {
val dateP2(y,m,d) = "Tested on "+dateStr+"."
Seq(List(y,m,d).mkString("-"), dateStr)
}
test("extract from middle of string (P3)") {
val dateP2(y,m,d) = "Tested on "+dateStr+"."
Seq(List(y,m,d).mkString("-"), dateStr)
}
def copyright(in: String): String = in match {
case dateP1(year, month, day) => "Copyright "+year
case _ => "No copyright"
}
test("copyright example has date") {
Seq(copyright("Date of this document: "+dateStr), "Copyright "+yearStr)
}
test("copyright example missing date") {
Seq(copyright("Date of this document: unknown"), "No copyright")
}
}