[plt-scheme] Syntax objects and strings (or "stupid infix tricks")

From: John Clements (clements at brinckerhoff.org)
Date: Thu Dec 7 17:13:20 EST 2006

On Dec 7, 2006, at 12:46 PM, Corey Sweeney wrote:

> That works.   (eval `(infix ,(read-syntax `thingy1 (open-input- 
> string "(2 + 3)")))) does produce 5.
> Thanks
> For fun I decided to test it's generality, I tried:
> (read-syntax `thingy2 (open-input-string "((("))
> Which immedately complained about missmatched parenthisis. I don't  
> really need to do this, but do you know what one would one do if  
> they needed to parse a language that didn't use parenthisis  
> charactors in the traditional maner?

You'd probably want to use a traditional parser.  One such parser is  
Scott Owens' parser-tools package, which (IIRC) is a part of the  
standard DrScheme distribution.


John Clements

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 2484 bytes
Desc: not available
URL: <http://lists.racket-lang.org/users/archive/attachments/20061207/35d52434/attachment.p7s>

Posted on the users mailing list.