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-rw-r--r--test/pending/run/reify_simpleinterpreter.scala75
1 files changed, 0 insertions, 75 deletions
diff --git a/test/pending/run/reify_simpleinterpreter.scala b/test/pending/run/reify_simpleinterpreter.scala
deleted file mode 100644
index 1f6d6c8da7..0000000000
--- a/test/pending/run/reify_simpleinterpreter.scala
+++ /dev/null
@@ -1,75 +0,0 @@
-import scala.reflect.runtime.universe._
-
-object Test extends App {
- reify {
- case class M[A](value: A) {
- def bind[B](k: A => M[B]): M[B] = k(value)
- def map[B](f: A => B): M[B] = bind(x => unitM(f(x)))
- def flatMap[B](f: A => M[B]): M[B] = bind(f)
- }
-
- def unitM[A](a: A): M[A] = M(a)
-
- def showM(m: M[Value]): String = m.value.toString();
-
- type Name = String
-
- trait Term;
- case class Var(x: Name) extends Term
- case class Con(n: Int) extends Term
- case class Add(l: Term, r: Term) extends Term
- case class Lam(x: Name, body: Term) extends Term
- case class App(fun: Term, arg: Term) extends Term
-
- trait Value
- case object Wrong extends Value {
- override def toString() = "wrong"
- }
- case class Num(n: Int) extends Value {
- override def toString() = n.toString()
- }
- case class Fun(f: Value => M[Value]) extends Value {
- override def toString() = "<function>"
- }
-
- type Environment = List[Tuple2[Name, Value]]
-
- def lookup(x: Name, e: Environment): M[Value] = e match {
- case List() => unitM(Wrong)
- case (y, b) :: e1 => if (x == y) unitM(b) else lookup(x, e1)
- }
-
- def add(a: Value, b: Value): M[Value] = (a, b) match {
- case (Num(m), Num(n)) => unitM(Num(m + n))
- case _ => unitM(Wrong)
- }
-
- def apply(a: Value, b: Value): M[Value] = a match {
- case Fun(k) => k(b)
- case _ => unitM(Wrong)
- }
-
- def interp(t: Term, e: Environment): M[Value] = t match {
- case Var(x) => lookup(x, e)
- case Con(n) => unitM(Num(n))
- case Add(l, r) => for (a <- interp(l, e);
- b <- interp(r, e);
- c <- add(a, b))
- yield c
- case Lam(x, t) => unitM(Fun(a => interp(t, (x, a) :: e)))
- case App(f, t) => for (a <- interp(f, e);
- b <- interp(t, e);
- c <- apply(a, b))
- yield c
- }
-
- def test(t: Term): String =
- showM(interp(t, List()))
-
- val term0 = App(Lam("x", Add(Var("x"), Var("x"))), Add(Con(10), Con(11)))
- val term1 = App(Con(1), Con(2))
-
- println(test(term0))
- println(test(term1))
- }.eval
-}