Hi Alaric
On Mon, 12 Jul 2010 14:10:14 +0100 Alaric Snell-Pym <ala...@snell-pym.org.uk>
wrote:
> I've written a quick few hundred lines of Chicken Scheme that converts
> BNF-esque grammars such as:
>
> (s-expression
> . (choice
> (seq "(" (one-or-more s-expression) "." s-expression ")")
> (seq "(" (zero-or-more s-expression) ")")
> (seq "\"" string "\"")
> (seq "#(" (zero-or-more s-expression) ")")
> (seq "#" symbol)
> (seq ":" symbol)
> (seq symbol ":")
> symbol
> number
> (seq "'" s-expression)
> (seq "`" s-expression)
> (seq "," s-expression)
> (seq ",@" s-expression)))
>
> (symbol
> . (choice
> (seq "|" (one-or-more character) "|")
> (seq symbol-first-character (zero-or-more
> symbol-subsequent-character))))
>
> Into SVG syntax diagrams such as:
>
> http://love.warhead.org.uk/~alaric/junk/sexpr.svg
>
> It uses matchable and sxpath-lolevel (from the sxpath egg) - the latter
> for turning the sxml representation of SVG into yucky XML.
>
> If it's of use to anybody else (I wrote it so I could draw syntax
> diagrams for the constructed language Lojban - see
> http://love.warhead.org.uk/~alaric/junk/lojban.svg for a more stressful
> workout of the layout engine), I'd like to put it in an egg, please!
Very nice. The banterpixra directory has been created in the eggs
repo. Thank you.
Best wishes.
Mario
--
http://parenteses.org/mario
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