// for testing compilation

import scala.util.{Try, Success, Failure}

//println("TEST1")

val res = {

  if (os.exists(os.pwd / "mand.ll")) 

    os.proc("lli", "mand.ll").call(cwd = os.pwd, check = false)

  else throw new Exception("No CLASS file found")

}

//println("TEST2")

/*

if (res.exitCode != 0) {

  throw new Exception("Unsuccessful call")

}

*/

def pp(s1: String, s2: String) = {

  val s1a = s1.split("\n").toList

  val s2a = s2.split("\n").toList

  for (n <- 0 to (s1a.length - 1)) {

    println(s"|${s1a(n)}|")

    println(s">${Try(s2a(n)).getOrElse("")}<")

  }

}

//println("TEST3")

val out = os.read(os.pwd / "mand.out")

//println("TEST4")

Try(res.out.text()) match {

  case Success(v) if v == out => println(s"   Success. Printed out the correct picture.\n")

  case Success(v) => println(s"   Printed out wrong or no picture.\n${pp(v, out)}") ; throw new Exception("Wrong picture")

  case Failure(e) => println(s"   Fail. Printed ${res.out.text()} instead\n") ; throw(e)

}