I'm aware of defmacro and even understand its implementation (cute trick!), but I need to eventually get something like this to work:
(require compatibility/defmacro) (define (my-cdr lst) (cdr lst)) (defmacro drop-first-form args `(begin ,@(my-cdr args))) (drop-first-form (displayln 1) (displayln 2)) Where the above just works and displays 2. I'll check out the latest research papers too. Thanks, Nick On Mon, Aug 5, 2013 at 1:40 AM, Noel Welsh <noelwe...@gmail.com> wrote: > Does defmacro do what you want? > > http://docs.racket-lang.org/compatibility/defmacro.html?q=defmacro#%28form._%28%28lib._compatibility%2Fdefmacro..rkt%29._defmacro%29%29 > > In terms of grokking the macro system you probably want to read some of the > research papers, which you can find from links here: > > http://racket-lang.org/people.html > > Racket's macro system is really cutting edge, so it doesn't have a large > body of text explaining it. > > HTH, > N. > > > > On Sun, Aug 4, 2013 at 9:50 PM, Nick Sivo <nicks...@gmail.com> wrote: >> >> Hello everyone, >> >> I work on Hacker News[1], which is written in Arc[2], and am tasked >> with making it faster. The Arc compiler targets Racket[3], but >> doesn't do so in such a way that function names or source locations >> are preserved. This makes output from the sampling profiler and error >> messages mostly useless. >> >> I'd like to make Arc work as a Racket language (and in the process >> preserve srclocs and names), and have made some progress[4]. However, >> I'm hitting a wall trying to implement Arc's macros. Specifically, I >> need to find a way for the macros themselves to use previously defined >> Arc functions as part of their processing. I understand that there are >> good reasons for Racket's hygiene and syntax phases, but I'm >> implementing an existing language that has its own strong opinions. >> I'm almost certain that accomplishing my goal is possible with the >> right understanding, but despite reading much of the Racket Reference, >> I don't truly get it yet. >> >> With that motivation in mind, what's the best way for me to become >> intimately familiar with Racket's runtime, execution and compilation >> model? Should I read through and make sure I understand the debugger? >> The macro stepper? Is there any kind of guide to Racket Internals? >> >> Thanks for any advice. >> >> Best, >> Nick >> >> [1] https://news.ycombinator.com >> [2] http://arclanguage.org >> [3] Well, really mzscheme >> [4] https://github.com/kogir/rark >> ____________________ >> Racket Users list: >> http://lists.racket-lang.org/users > > ____________________ Racket Users list: http://lists.racket-lang.org/users
