Hi Folks
I've been using the Perl module Marpa to design a parser for Graph::Easy
style graph definitions, with great success.
So far, I haven't written a lexer to turn the definitions into an
intermediary language, but I've designed that intermediary language
along with a Marpa-style grammar,
Hi all,
On Tuesday 22 Mar 2011 00:10:49 David Nicol wrote:
On Mon, Mar 21, 2011 at 4:04 PM, dhu...@hudes.org wrote:
An interesting concept but describing the syntax as a grammar is not the
same as an FSA. The FSA is part of the parser and lexer.
I disagree. State Machine is a powerful
Hi All
On Tue, 2011-03-22 at 12:38 +0200, Shlomi Fish wrote:
Hi all,
On Tuesday 22 Mar 2011 00:10:49 David Nicol wrote:
On Mon, Mar 21, 2011 at 4:04 PM, dhu...@hudes.org wrote:
An interesting concept but describing the syntax as a grammar is not the
same as an FSA. The FSA is part of
On Sun, Mar 20, 2011 at 6:42 PM, dhu...@hudes.org wrote:
In terms of considering parser improvements or reimplementation, the first
step is to come up with a formal grammar for the language.
Preferably a Context Free Grammar (CFG) expressed in BNF or EBNF.
Once we have that we have options
-
On Mon, Mar 21, 2011 at 4:04 PM, dhu...@hudes.org wrote:
An interesting concept but describing the syntax as a grammar is not the
same as an FSA. The FSA is part of the parser and lexer.
I disagree. State Machine is a powerful abstraction that is useful in many
places.
The thing about
Hi
On Mon, 2011-03-21 at 14:04 -0700, dhu...@hudes.org wrote:
One could describe the Graph::Easy format grammar as a state machine, draw
the state machine with Graph::Easy, then implement a parser from your
diagram, with
On Mon, Mar 21, 2011 at 4:04 PM, dhu...@hudes.org wrote:
An interesting concept but describing the syntax as a grammar is not the
same as an FSA. The FSA is part of the parser and lexer.
I disagree. State Machine is a powerful abstraction that is useful in
many
places.
FSA/FSM are
I reviewed the list of bugs at
https://rt.cpan.org/Public/Dist/Display.html?Name=Graph-Easy
Very few seem related to parsing or the input language.
The layouter hanging on a 749 edge graph would seem a problem even if you
explicitly did it with calls from perl code.
Indeed most of the bugs seem
