There is also a `with-module-reading-parameterization` that sets up the reader to do this. <div class="gmail_quote">On Wed, Feb 18, 2015, 10:36 PM Sam Tobin-Hochstadt <<a href="mailto:samth@cs.indiana.edu">samth@cs.indiana.edu</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Wed, Feb 18, 2015 at 10:22 PM, Thomas Gilray <<a href="mailto:thomas.gilray@gmail.com" target="_blank">thomas.gilray@gmail.com</a>> wrote: > Hi everyone, > > I am trying to figure out how to use read-syntax on a port for an entire > .rkt file. I then want to call (expand ...) on this and get back a (begin > ...) or (module ...) for the entire file in fully expanded form. > > If I run (expand #`(define ...)) under a #lang racket, everything works. If > I place this in a file and use read-syntax however, each top-level > expression is returned individually, the language declaration isn't > supported, and without this information the expander complains that "define" > isn't defined. How do I properly read-syntax a whole file at once? > > Any ideas would be greatly appreciated. I've implemented this a couple times recently, probably the best version is here: <a href="https://github.com/samth/pycket/blob/master/pycket/pycket-lang/expand.rkt" target="_blank">https://github.com/samth/pycket/blob/master/pycket/pycket-lang/expand.rkt</a> The short answer is that you want to use `read-accept-lang` to enable #lang, call `read-syntax` once on the port, and the call `expand` in a new namespace (probably created with `make-base-namespace`). Sam ____________________ Racket Users list: <a href="http://lists.racket-lang.org/users" target="_blank">http://lists.racket-lang.org/users</a> </blockquote></div>