codegen almost finished

test.l

@@ -1,10 +1,20 @@
-struct point {
-	i32 x,
-	i32 y
-}
+extern i64 write(i32 fd, *u8 buf, u64 count);
+extern void exit(i32 code);
+extern *u8 malloc(usize size);
 
 i32 main()
 {
-	point result = .{ x = 2, y = 1 };
-	return (result.y) + 2;
+	[u8] message = "Hello world!\n";
+	*u8 message_heap = malloc(message.len);
+	[u8] new_message = message_heap[0..13];
+	u32 i = 0;
+
+	loop while i < message.len {
+		new_message[i] = message[i];
+		i = i + 1;
+	}
+
+	write(1, new_message.ptr, new_message.len);
+
+	return 0;
 }