Sorry everyone. ----- Original Message ----- From: "Joel de Guzman" <[EMAIL PROTECTED]> To: "Boost mailing list" <[EMAIL PROTECTED]> Cc: "Spirit" <[EMAIL PROTECTED]> Sent: Thursday, August 28, 2003 6:03 PM Subject: Re: [boost] RE: Spirit question...CORRECTION to my grammer!
> Chris, > > Spirit has its own mailing list: > > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/spirit-general > > Please post further questions there. Thanks. > > -- > Joel de Guzman > http://www.boost-consulting.com > http://spirit.sf.net > > > Chris Cooney <[EMAIL PROTECTED]> wrote: > > Hello, > > > > I've been fiddling around with boost::spirit in an > > attempt to write a small and esoteric scripting language. > > > > Here's some code snipits of what I'm trying to do. > > example script (a one liner in this case): > > > > DO_SOMETHING(param1,param2) > > > > > > the grammer: > > > > struct my_grammer : public grammar<my_grammer> > > { > > my_grammer(vector<string>& v_): v(v_) {} > > > > template <typename ScannerT> > > struct definition > > { > > definition(wb_grammer const& self) > > { > > //char token defs > > COMMA = ch_p(','); > > LPAREN = ch_p('('); > > RPAREN = ch_p(')'); > > USCORE = ch_p('_'); > > > > param_alnum = lexeme_d[alpha_p >> *(alnum_p)]; > > > > do_something = str_p("DO_SOMETHING") >> LPAREN >> > > /*param1*/param_alnum[append(self.v)] >> !COMMA >> > > /*param2*/param_alnum[append(self.v)] >> RPAREN; > > > > do_something_else = str_p("DO_SOMETHING_ELSE") >> LPAREN >> > > /*param1*/param_mode[append(self.v)] >> !COMMA >> > > /*param2*/param_type[append(self.v)] >> RPAREN; > > > > functions = do_something | do_something_else; > > } > > > > rule<ScannerT> > > COMMA,LPAREN,RPAREN,USCORE,param_alnum,do_something,do_something_else,functi > > ons; > > > > rule<ScannerT> const& > > start() const { return functions; } > > }; > > > > vector<string>& v; > > }; > > > > > > int main() > > { > > vector<string> v; > > my_grammer script_grammer(v); > > string str; > > > > while (getline(cin, str)) > > { > > parse_info<> info = parse(str.c_str(), script_grammer, space_p); > > > > if (info.full) > > { > > //determine which rule (script function) was called > > //and do something with the parameters stored in the vector > > } > > else > > { > > //error out. > > } > > } > > } > > > > > > problem: > > > > My problem is how to determine which rule was the one > > that resulted in a successful parsing of the > > line ("DO_SOMETHING(param1,param2)"); > > > > NOTE: I'm unfortunately stuck with the MSVC 7.0 compiler so > > I can't use the Tree functionalities of spirit because of their > > implementations use of partial template specialization. > > > > any ideas? > > > > Thank you very much, > > > > Chris. > > > > > > _______________________________________________ > > Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost > > _______________________________________________ > Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost > > _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
