refactored and reworked functions in scarpet

src/main/java/carpet/script/exception/ExitStatement.java

@@ -0,0 +1,13 @@
+package carpet.script.exception;
+
+import carpet.script.value.Value;
+
+/* Exception thrown to terminate execution mid expression (aka return statement) */
+public class ExitStatement extends RuntimeException
+{
+    public Value retval;
+    public ExitStatement(Value value)
+    {
+        retval = value;
+    }
+}