Re: viewing parse tree

2005-04-14 Thread Hans Aberg 
At 05:08 +0400 2005/04/14, hz kto wrote:
I was wondering are there any tools out there that allow to view 
bison parse tree in graphics some sort of pseudo graphics, or any 
other way to help understand which branches of the parse tree depend 
on a particular grammar element. For example I want to find out all 
branches that might contain multiplication.
If you want to see that parse tree, Bison does not provide any such 
thing, though there is a -g option, letting you to get a VCG graph of 
the pushdown automaton that Bison generates. You might inquiry in the 
group comp.compilers for such tools. In Bison, one uses normally the 
hands on approach, adding the stuff by hand the rule actions.
--
  Hans Aberg

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Re: viewing parse tree

2005-04-14 Thread Henrik Sorensen 
On Thursday 14 April 2005 03.08, hz kto wrote:
> I was wondering are there any tools out there that allow to view bison
> parse tree in graphics some sort of pseudo graphics

I recently discovered a tool: ebnf2ps by Peter Thiemann.
www.informatik.uni-freiburg.de/~thiemann/haskell/ebnf2ps

it can take a yacc file as input and generate a postscript file showing the 
syntax diagrams.

Combined with LaTex, I used it to generate an online reference manual for the 
pl1gcc project (pl1gcc.sourceforge.net) click on manual to see a sample

Hope this helps you,

> thanks in advance
> Alex
Henrik


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