Hi Dmitry, I've been using `dynamic-require` for Pyret, a non-SEXP based language. For example, here's part of our command-line interface:
https://github.com/brownplt/pyret-lang/blob/master/src/cmdline.rkt#L116 You can ignore the parameterization under `check-mode`, which is Pyret specific. The point is that `pyret-file` is a filename handed in as a command-line argument, and we load the module via `dynamic-require`. `dynamic-require` does the work of using the reader/environment specified for the #lang declared in the file, and gets things like relative module imports right, too (at least I haven't been able to do anything too unexpected). This should work for any language that you want to build a file-accepting interface for, not just non-sexp ones. I'm not sure if this is the preferred style or not; if it's not, Pyret should probably use whatever better method there is as well. Cheers, Joe P On Tue, Sep 10, 2013 at 11:14 AM, Dmitry Pavlov <dpav...@ipa.nw.ru> wrote: > Hello, > > I have developed a non-SEXP DSL called SLON, and it works > great in DrRacket via "#lang slon" declaration. > > I have properly set up a lexer, a parser which returns datum > or syntax objects, slon/lang/reader.rkt, > slon/lang/lang-into.rkt, slon/lang/confugure-runtime.rkt > and all the other stuff. > > Now I need it to work as a stand-alone interpreter > which runs files specified by user (outside of DrRacket). > How do I do that? The only thing I was able to come up > with is using make-evaluator for racket/sandbox: > > (require slon/slon-parser > racket/sandbox) > > (call-with-input-file* > "myprogram.slon" > (lambda (port) > (parameterize ((sandbox-input (current-input-port)) > (sandbox-output (current-output-port))) > (call-with-trusted-sandbox-configuration > (lambda () > ((make-evaluator 'slon/slon-language > #:allow-read '("/")) > (slon-read port)))))))) > > Is it the correct way to create a stand-alone interpreter? > Because I do not really need a "sandbox" of any kind, > and also I was forced to specify #:allow-read '("/") > because the SLON programs do read arbitrary files. > > Also I am having a lot of trouble in making that > a stand-alone executable; but I will postpone > discussing it because I am not sure whether > I chose the right way to do the whole thing. > > > Best regards, > > Dmitry > ____________________ > Racket Users list: > http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
