[plt-scheme] Is there a way to "apply" a macro?

From: Carl Eastlund (carl.eastlund at gmail.com)
Date: Sun Apr 11 17:07:07 EDT 2010

On Sun, Apr 11, 2010 at 5:01 PM, Todd O'Bryan <toddobryan at gmail.com> wrote:
> OK, I know there isn't, since macros match before the code has a
> chance to run, but here's what I need to do:
> I'm using someone else's very nice macro that has the form
> (macro-name expr [literal1 val1] [literal2 val2] ...)
> The problem is that I have to build up the "expr [literal1 val1]
> [literal2 val2] ..." programmatically and the macro is pretty
> complicated.
> So, how do I put together all the parts after the macro name and then
> get the result as if they'd gone through macro expansion?
> Todd

What do you mean by "have to build up the [body] programmatically"?
Do you mean you have to do it at run-time?  Or do you mean you need
more than just pattern matching to build it?  If the former,
presumably it would be just as easy to write the code directly without
the macro as it would be to compute the macro, expand it, and run it.
If the latter, there's no reason you can't build syntax
programmatically within a macro based on syntax-case or syntax-parse.


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