[nem-en] Questions about macros

[Kamil Skalski]

I think it is not possible with current API. You would need to create
MainParser object with  the token stream (the first token wrapped by
Token.BracesGroup) placed in

 mutable stream : Token;

field.

I guess a new constructor or method Parse (GlobalEnv, Token) etc. in
MainParser should be created.

2006/6/9, Alejandro Serrano <trupill at yahoo.es>:
> Thanks for the quick response. In the example you point to, the tokens
> are just added to a list and converted to strings. In my case, how could
> I use the tokens again, for getting the expression "x + 1", for example?
>
> Kamil Skalski escribió:
> > Probably 'syntax' is indeed too weak for your needs. You should try
> > the token stream feature:
> > http://nemerle.org/Syntax_extensions
> >
> > You can take a look in ncc/testsuite/positive/macrolib.n and
> > macroprog.n for the example with XML literals.
> >
> > I guess my approach would be to define macro with raw token syntax
> > extension, which begins with 'from' keyword. It would take the stream,
> > cut it into parts delimited by query syntax keywords (like 'select',
> > 'orderby', 'where') and then try to use standard parser's methods to
> > parse those partial token streams into PExpr.
>
>
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-- 
Kamil Skalski
http://nazgul.omega.pl