first commit

tester/testsuite/extensions/objects1/queue.jl

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+class Node {
+  int elem;
+  Node next;
+
+  void setElem (int e)  { elem = e; }
+  void setNext (Node n) { next = n; }
+
+  int  getElem () { return elem; }
+  Node getNext () { return next; }
+
+}
+
+class IntQueue {
+  Node front;
+  Node rear;
+
+  boolean isEmpty () { return front == (Node)null; }
+
+  void insert (int x) {
+    Node last = new Node;
+    last.setElem(x);
+    if (self.isEmpty())
+      front = last;
+    else 
+      rear.setNext(last);
+    rear = last;
+  }
+
+  int first () { return front.getElem(); }
+
+  void rmFirst () {
+    front = front.getNext();
+  }
+
+  int size () {
+      Node n = front;
+      int res = 0;
+      while (n != (Node)null) {
+        n = n.getNext();
+        res++;
+      }
+     return res;
+  }
+}
+
+int f (int x) {
+  return x*x + 3;
+}
+
+int main () {
+  IntQueue q = new IntQueue;
+  q.insert(f(3));
+  q.insert(5);
+  q.insert(7);
+  printInt(q.first());
+  q.rmFirst();
+  printInt(q.size());
+  return 0;
+}
+
+