Discussion:
Using with-syntax
Duncan Mak
2018-03-02 23:28:46 UTC
Permalink
Hello,

I'm writing some macro code and I make use of with-syntax quite a bit.
When I load it in the REPL, it all seems to work, but when I load it
as an R7RS library module definition, I run into various issues:

1) If I run it with (import (scheme base)), I fall into a recursive
loop inside some rewrite step, and it eventually gives up.

2) If I run it with (import (scheme base) (kawa lib std_syntax)), I
seem to see something similar (http://savannah.gnu.org/bugs/?49416
says to import std_syntax).

3) If I run it with (import (kawa base)), then things seem to work,
but now I can't define my own macro named define-variable.

What's the right way to get with-syntax to work?
--
Duncan.
Per Bothner
2018-03-02 23:50:10 UTC
Permalink
Post by Duncan Mak
Hello,
I'm writing some macro code and I make use of with-syntax quite a bit.
When I load it in the REPL, it all seems to work, but when I load it
1) If I run it with (import (scheme base)), I fall into a recursive
loop inside some rewrite step, and it eventually gives up.
Curious.
Post by Duncan Mak
2) If I run it with (import (scheme base) (kawa lib std_syntax)), I
seem to see something similar (http://savannah.gnu.org/bugs/?49416
says to import std_syntax).
3) If I run it with (import (kawa base)), then things seem to work,
but now I can't define my own macro named define-variable.
How about:

(import (except (kawa base) define-variable))
Post by Duncan Mak
What's the right way to get with-syntax to work?
We should probably have a (kawa syntax-case) library.
--
--Per Bothner
***@bothner.com http://per.bothner.com/
Duncan Mak
2018-03-03 04:36:54 UTC
Permalink
(import (except (kawa base) define-variable)) worked, thanks!

I filed an Issue for (kawa syntax-case) library -
https://gitlab.com/kashell/Kawa/issues/38


Duncan.
Post by Per Bothner
Post by Duncan Mak
Hello,
I'm writing some macro code and I make use of with-syntax quite a bit.
When I load it in the REPL, it all seems to work, but when I load it
1) If I run it with (import (scheme base)), I fall into a recursive
loop inside some rewrite step, and it eventually gives up.
Curious.
Post by Duncan Mak
2) If I run it with (import (scheme base) (kawa lib std_syntax)), I
seem to see something similar (http://savannah.gnu.org/bugs/?49416
says to import std_syntax).
3) If I run it with (import (kawa base)), then things seem to work,
but now I can't define my own macro named define-variable.
(import (except (kawa base) define-variable))
Post by Duncan Mak
What's the right way to get with-syntax to work?
We should probably have a (kawa syntax-case) library.
--
--Per Bothner
--
Duncan.
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