Re: Parse library
From: William Stacey [MVP] (staceywREMOVE_at_mvps.org)
Date: 05/16/04
- Next message: Vijaye Raji: "Re: Mouse coordinate"
- Previous message: William Stacey [MVP]: "Re: Parse library"
- In reply to: Justin Rogers: "Re: Parse library"
- Next in thread: Justin Rogers: "Re: Parse library"
- Reply: Justin Rogers: "Re: Parse library"
- Messages sorted by: [ date ] [ thread ]
Date: Sun, 16 May 2004 05:16:48 -0400
BTW. The html doco on bind (and src and binaries) are available at
www.ics.org. If you ever have any questions on bind or w2k dns, I will be
most happy to help or find an answer for you. Cheers!
--
William Stacey, MVP
"Justin Rogers" <Justin@games4dotnet.com> wrote in message
news:uKeLrRyOEHA.3896@TK2MSFTNGP12.phx.gbl...
> I've gone the basic route. You can fine the article and full code for a
parse
> that does
> a pseudo-bind format. My format might support something like:
>
> bind {
> recursion = true;
> forwarders {
> 0 = "192.168.0.1"; 1 = "192.168.0.2";
> }
> view1 {
> zone1 {
> name = "mydomain.com";
> forwarders {
> 0 = "192.168.0.1"; 1 = "192.168.0.2";
> }
> }
> }
> }
>
> Note, that I am going to finally implement the full bind configuration
format,
> not because I have
> to, but because I think it would be kind of cool. The result of my
compiler is
> an Xml file format,
> but you could easily evolve the compiler to spit out another format if you
> wished. I point out in
> the article that I do semantic processing in two places. If you wanted a
parser
> rather than a
> linked parser/compiler module, then there are some things that would have
to be
> changed to be
> more efficient to that form of program. With a parser module, you'd
expect some
> abstract output
> that you would then input to a compiler module that would create the final
view.
> I've simply linked
> these two steps into one because it is common and easy to do for small
> languages.
>
> http://weblogs.asp.net/justin_rogers/archive/2004/05/16/132744.aspx
>
>
> --
> Justin Rogers
> DigiTec Web Consultants, LLC.
> Blog: http://weblogs.asp.net/justin_rogers
>
> "Daniel O'Connell [C# MVP]" <onyxkirx@--NOSPAM--comcast.net> wrote in
message
> news:%23UIehMyOEHA.3452@TK2MSFTNGP10.phx.gbl...
> >
> > "William Stacey [MVP]" <staceywREMOVE@mvps.org> wrote in message
> > news:uUhhptxOEHA.620@TK2MSFTNGP10.phx.gbl...
> > > Your the man! That is sweet. You gave me an idea. It might be
> > > interesting
> > > to use c# code style over the bind style. The bind is good and what I
was
> > > after, but the c# style would be a very cool twist and I am not tied
to
> > > the
> > > bind but for the common use of it. How could/should I define the same
> > > kind
> > > of config using c# style such as below and will this work?
> > >
> > > class BindConfig
> > > {
> > > bool recursion = true;
> > > IPAddress[] forwarders = {"192.168.0.1", "192.168.0.2"}; // not
sure
> > > here
> > >
> > > class View1
> > > {
> > > class Zone1
> > > {
> > > string name = "mydomain.com.";
> > > IPAddress[] forwarders = ...
> > > }
> > > }
> > > class View2
> > > {
> > > // other zones.
> > > }
> > > }
> > >
> > > Not sure if this is better or not, but could be flexible.
> > If you are going to go this far, why not make it full blown syntax?
> >
> > config Bind
> > {
> > bool recursion = true;
> > IPAddress[] forwards = {192.168.0.1, 192.168.0.2};
> >
> > view basicView
> > {
> > zone FooZone
> > {
> > string name = "mydomain.com";
> > IPAddress[] forwarders = ...
> > }
> > }
> >
> > }
> >
> > or wahtever is specifica to your needs. Justins lexer is probably
flexible
> > enough to do this, although the parser would probably need a bit of work
for
> > type verification and the like. The flexibility is there, its just a
matter
> > of designing it and writing the parser. When you get into typing, c
style
> > strings, and the like the lexer and\or parser(depending on your design)
> > become a bit more complex, although not prohibitivly so.
> >
> > > Normally I don't need to be spoon fed, but this stuff is a bit new to
me.
> > > Very much appreciate your help and interest.
> > >
> > > --
> > > William Stacey, MVP
> > >
> > > "Justin Rogers" <Justin@games4dotnet.com> wrote in message
> > > news:O66G$JxOEHA.1312@TK2MSFTNGP12.phx.gbl...
> > >> > Phew, that makes my lexer look bulky, ;)(536 lines so far). Granted
it
> > >> > supports several literal formats(string, integers and double right
> > >> > now).
> > >>
> > >> Yes, the lexer could be more advanced. Notice in a second post, I
took
> > >> out even more code bringing the 39 lines to only 30 (for the lexer),
but
> > >> added the necessary namespace imports and a test driver.
> > >>
> > >> http://weblogs.asp.net/justin_rogers/archive/2004/05/15/132693.aspx
> > >>
> > >> > Out of curiosity, what are you using for your parser? Are you using
a
> > > parser
> > >> > generator or just writing one by hand? I imagine I could wait for
you
> > >> > to
> > >> > post the article, but I am curious.
> > >>
> > >> I generally write my parser's by hand. It doesn't take much. I'm
not at
> > > the
> > >> machine with the parser on it right now so I can't tell you the
number of
> > > lines
> > >> to parse the Bind configuration file (thanks to William for pointing
out
> > > the
> > >> source of this configuration format), but it is relatively short, on
the
> > > order
> > >> of
> > >> only 100-150 with comments. There is some code to build the
XmlDocument
> > >> object (note this is not a straight parser, but rather a parser +
> > >> compiler
> > >> module
> > >> that compiles the Bind configuration file into XmlDocument). I'll
have
> > > the
> > >> article
> > >> up shortly.
> > >>
> > >>
> > >> --
> > >> Justin Rogers
> > >> DigiTec Web Consultants, LLC.
> > >> Blog: http://weblogs.asp.net/justin_rogers
> > >>
> > >>
> > >
> >
> >
>
>
- Next message: Vijaye Raji: "Re: Mouse coordinate"
- Previous message: William Stacey [MVP]: "Re: Parse library"
- In reply to: Justin Rogers: "Re: Parse library"
- Next in thread: Justin Rogers: "Re: Parse library"
- Reply: Justin Rogers: "Re: Parse library"
- Messages sorted by: [ date ] [ thread ]
Relevant Pages
|
