Re: [Chicken-users] Implementing a macroexpand-all

[Alan Post]

If you figured it out that would be amazing.  I'm not sure myself
what the core binding forms are, but this is a very interesting
problem, I'm enjoying reading about you digging it up.

-Alan

On Fri, Feb 11, 2011 at 03:10:03PM -0500, Patrick Li wrote:
>    Great. Thanks for that tip! I think I will try and figure it out.
>    As long as I can figure out what the core binding-introducing forms are, I
>    think I can do it.
>    -Patrick
>    On Fri, Feb 11, 2011 at 2:56 PM, Peter Bex <address@hidden> wrote:
> 
>      On Fri, Feb 11, 2011 at 02:46:58PM -0500, Patrick Li wrote:
>      >
>      > The "when" should not be macroexpanded because it is a local binding
>      > introduced by the let form. In that context, it is actually *not* a
>      macro.
>      >
>      > Does anyone know which forms introduce new bindings? How can I check
>      this
>      > up?
> 
>      I'm afraid to really do this properly you'd need to implement your own
>      macro-expander. You need to do all sorts of bookkeeping to get your
>      syntactic environments straight. The macro-expander needs to know about
>      core forms like LET and extend the environment accordingly when those
>      are
>      used. See expand.scm in Chicken core (hairy!), or alexpander in the
>      Chicken 3 egg repo (cleaner, but still rather tricky) for an example of
>      such things.
> 
>      Cheers,
>      Peter
>      --
>      [2]http://sjamaan.ath.cx
>      --
>      "The process of preparing programs for a digital computer
>      is especially attractive, not only because it can be economically
>      and scientifically rewarding, but also because it can be an aesthetic
>      experience much like composing poetry or music."
>      -- Donald Knuth
> 
> References
> 
>    Visible links
>    1. mailto:address@hidden
>    2. http://sjamaan.ath.cx/

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