December 04, 2002
Hi,

I like D language design ideas and I'd like to help making it OpenSource. Currently I'm trying to write ANTLR grammar for the D. Is it interesting for someone?

--
Eugene



December 04, 2002
What's an ANTLR grammar?

"Eugene Melekhov" <eugene_melekhov@mail.ru> wrote in message news:askm47$21gs$1@digitaldaemon.com...
> Hi,
>
> I like D language design ideas and I'd like to help making it OpenSource. Currently I'm trying to write ANTLR grammar for the D. Is it interesting for someone?
>
> --
> Eugene
>
>
>


December 05, 2002
> What's an ANTLR grammar?
>
> "Eugene Melekhov" <eugene_melekhov@mail.ru> wrote in message news:askm47$21gs$1@digitaldaemon.com...
> > Hi,
> >
> > I like D language design ideas and I'd like to help making it
OpenSource.
> > Currently I'm trying to write ANTLR grammar for the D. Is it interesting for someone?

The following is the quotation from the http://www.antlr.org:
"The ANTLR Translator generator is a completely redesigned version of PCCTS
that has been reimplemented in Java to generate Java, C++, and Sather."



December 05, 2002
"Walter" <walter@digitalmars.com> schrieb im Newsbeitrag news:asm3dr$ng8$1@digitaldaemon.com...
> What's an ANTLR grammar?

ANTL is a very nice parser creation framework. I have used it myself in a big project. It might not be the tool you want to use ;-)) but not everyone writes parsers, code generators etc. for every day business. Robert


December 05, 2002
Robert M. Münch <robert.muench@robertmuench.de> wrote:
> ANTL is a very nice parser creation framework. It might not be
>the tool you want to use ;-))
Why not,BTW ? dmd implements the same recursive-descent algorithm as the
ANTLR generated parser, but grammar is hardcoded in the sources and it is
not easy to understand modify it. GCC is impemented using bizon,flex for
example.
So from my point of view using parser generator is very usefull
especially in OpenSource project.

--
Eugene




December 05, 2002
Eugene Melekhov wrote:
> Robert M. Münch <robert.muench@robertmuench.de> wrote:
> 
>>ANTL is a very nice parser creation framework. It might not be
>>the tool you want to use ;-))
> 
> Why not,BTW ? dmd implements the same recursive-descent algorithm as the
> ANTLR generated parser, but grammar is hardcoded in the sources and it is
> not easy to understand modify it. GCC is impemented using bizon,flex for
> example.
> So from my point of view using parser generator is very usefull
> especially in OpenSource project.

One interesting use of this would be to take the java and C++ grammars that are available, write one for D, and then generate a tool that does automatic translation from C++, C, or Java, to D.

Evan

December 05, 2002
Evan McClanahan <evan@dontSPAMaltarinteractive.com> wrote:
> One interesting use of this would be to take the java and C++ grammars that are available, write one for D, and then generate a tool that does automatic translation from C++, C, or Java, to D.
One note.
There is no need for D grammar to translate to D.
It's not easy to find comprehensive C++ grammar while Java grammar is
available at the ANTL site.

--
Eugene


December 05, 2002
"Eugene Melekhov" <eugene_melekhov@mail.ru> wrote in message news:asneoe$2m56$1@digitaldaemon.com...
> Robert M. Münch <robert.muench@robertmuench.de> wrote:
> > ANTL is a very nice parser creation framework. It might not be
> >the tool you want to use ;-))
> Why not,BTW ? dmd implements the same recursive-descent algorithm as the
> ANTLR generated parser, but grammar is hardcoded in the sources and it is
> not easy to understand modify it. GCC is impemented using bizon,flex for
> example.
> So from my point of view using parser generator is very usefull
> especially in OpenSource project.

Good question. I don't use parser generators because of the lack of control I have over its output, coupled with the problems I've had getting the parser generator ported when moving the source to a different machine/OS.

The latest trouble I had was in using Bison under linux, which worked fine. Until trying to move the source back to Win32. The Bison win32 executable is a poor port to Win32, suffering numerous bugs caused by things like not recognizing \ as a path separator. Ah, you say since Bison is open source I could fix it myself. True, but I'd rather spend the time fixing my own bugs <g>.

D doesn't need a parser generator anyway, because the parser is pretty
simple (on purpose!).


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