[nem-en] macro-based syntax extensions.

[Ivan A Eryshov]

On 02/03/07, Michal Moskal <michal.moskal at gmail.com> wrote:
> On 3/2/07, Ivan A Eryshov <ivan.eryshov at gmail.com> wrote:
> > Guys,
> >
> > I have a questions about macro-based syntax extensions.
> >
> > 1. Why syntax extension's keywords can not contain numeric symbols?
>
> I guess it's a bug.

Ok, I'll fix it.

> > 2. Can I use in syntax non-keyword at first position?
>
> Not really. The way the parser works, is by building a tree of syntax
> extensions, and the root of that tree needs to be a keyword. It might
> be possible to overcome that limitation by looking more than one token
> ahead in the lexer, but this would probably require major changes in
> the parser.
>
> In such situations you can try to define your macro to be an operator,
> which makes it possible to use infix.

Hmm... Let me try... ;)

> --
>   Michał
>
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