Test custom iterator

inputs/passing/customIterator.ts

@@ -0,0 +1,46 @@
+// test_output! [5,6,7,8,9]
+
+export default function () {
+  let vals: number[] = [];
+
+  for (const x of new Range(5, 10)) {
+    vals.push(x);
+  }
+
+  return vals;
+}
+
+class Range {
+  start: number;
+  end: number;
+
+  constructor(start: number, end: number) {
+    this.start = start;
+    this.end = end;
+  }
+
+  [Symbol.iterator]() {
+    return new RangeIterator(this.start, this.end);
+  }
+}
+
+class RangeIterator {
+  value: number;
+  end: number;
+
+  constructor(value: number, end: number) {
+    this.value = value;
+    this.end = end;
+  }
+
+  next() {
+    const done = this.value >= this.end;
+    const res = { value: this.value, done };
+
+    if (!done) {
+      this.value++;
+    }
+
+    return res;
+  }
+}

valuescript_compiler/src/assembly_parser.rs

@@ -921,6 +921,7 @@ impl<'a> AssemblyParser<'a> {
           let name = self.parse_identifier();
           Value::Pointer(Pointer { name })
         }
+        '$' => Value::Builtin(self.assemble_builtin()),
         '}' => {
           self.pos.next();
           break object;