diff --git a/src/main.rs b/src/main.rs
index 96a8bf7..e0028e0 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,6 +10,21 @@ pub mod lexer;
 pub mod parser;
 
 const INPUT: &str = "
+type Color {
+    Red,
+    Hex (string),
+    Rgb { r: int, g: int, b: int }
+}
+
+code Color {
+    fn to_hex(color ~ Color) -> string {
+        match color:
+            Red => \"#FF0000\"
+            Hex(hex) => hex
+            Rgb { r, g, b } => format!(\"#{:02X}{:02X}{:02X}\", r, g, b)
+    }
+}
+
 fn main() {
     let a = |a ~ int| { 1 + 1; a };