Preprocessing produces a series of tokens, so you would implement it as a new type of token. If you're using something like `-E` you would just pretty-print it

Preprocessing produces a series of tokens, so you would implement it as a new type of token. If you're using something like `-E` you would just pretty-print it as a comma-delimited list of integers. If you're moving on to translation phase 7, you'd have some sort of rules in your parser about where those kinds of tokens can appear . Just like you can't have a return token in an initializer, you wouldn't be allowed to have an embed token outside of one (or whatever the rules are). And you can directly instantiate some kind of node that contains the binary data.