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diff --git a/tests/disabled/macro/run/reify_fors_oldpatmat.scala b/tests/disabled/macro/run/reify_fors_oldpatmat.scala
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+import scala.reflect.runtime.universe._
+import scala.tools.reflect.Eval
+
+object Test extends dotty.runtime.LegacyApp {
+ reify {
+ object Persons {
+ /** A list of persons. To create a list, we use Predef.List
+ * which takes a variable number of arguments and constructs
+ * a list out of them.
+ */
+ val persons = List(
+ new Person("Bob", 17),
+ new Person("John", 40),
+ new Person("Richard", 68)
+ )
+
+ /** A Person class. 'val' constructor parameters become
+ * public members of the class.
+ */
+ class Person(val name: String, val age: Int)
+
+ /** Return an iterator over persons that are older than 20.
+ */
+ def olderThan20(xs: Seq[Person]): Iterator[String] =
+ olderThan20(xs.iterator)
+
+ /** Return an iterator over persons older than 20, given
+ * an iterator over persons.
+ */
+ def olderThan20(xs: Iterator[Person]): Iterator[String] = {
+
+ // The first expression is called a 'generator' and makes
+ // 'p' take values from 'xs'. The second expression is
+ // called a 'filter' and it is a boolean expression which
+ // selects only persons older than 20. There can be more than
+ // one generator and filter. The 'yield' expression is evaluated
+ // for each 'p' which satisfies the filters and used to assemble
+ // the resulting iterator
+ for (p <- xs if p.age > 20) yield p.name
+ }
+ }
+
+ /** Some functions over lists of numbers which demonstrate
+ * the use of for comprehensions.
+ */
+ object Numeric {
+
+ /** Return the divisors of n. */
+ def divisors(n: Int): List[Int] =
+ for (i <- List.range(1, n+1) if n % i == 0) yield i
+
+ /** Is 'n' a prime number? */
+ def isPrime(n: Int) = divisors(n).length == 2
+
+ /** Return pairs of numbers whose sum is prime. */
+ def findNums(n: Int): Iterable[(Int, Int)] = {
+
+ // a for comprehension using two generators
+ for (i <- 1 until n;
+ j <- 1 until (i-1);
+ if isPrime(i + j)) yield (i, j)
+ }
+
+ /** Return the sum of the elements of 'xs'. */
+ def sum(xs: List[Double]): Double =
+ xs.foldLeft(0.0) { (x, y) => x + y }
+
+ /** Return the sum of pairwise product of the two lists. */
+ def scalProd(xs: List[Double], ys: List[Double]) =
+ sum(for((x, y) <- xs zip ys) yield x * y);
+
+ /** Remove duplicate elements in 'xs'. */
+ def removeDuplicates[A](xs: List[A]): List[A] =
+ if (xs.isEmpty)
+ xs
+ else
+ xs.head :: removeDuplicates(for (x <- xs.tail if x != xs.head) yield x)
+ }
+
+ // import all members of object 'persons' in the current scope
+ import Persons._
+
+ print("Persons over 20:")
+ olderThan20(persons) foreach { x => print(" " + x) }
+ println
+
+ import Numeric._
+
+ println("divisors(34) = " + divisors(34))
+
+ print("findNums(15) =")
+ findNums(15) foreach { x => print(" " + x) }
+ println
+
+ val xs = List(3.5, 5.0, 4.5)
+ println("average(" + xs + ") = " + sum(xs) / xs.length)
+
+ val ys = List(2.0, 1.0, 3.0)
+ println("scalProd(" + xs + ", " + ys +") = " + scalProd(xs, ys))
+ }.eval
+}