feature request: __ARGS__ for logging (cf __FILE__, __LINE__, __FUNC___)

[Timon Gehr]

On 02/04/2013 01:41 PM, Jacob Carlborg wrote:
> On 2013-02-01 18:53, bearophile wrote:
>
>> Maybe Jacob Carlborg is able to show what kind of syntax for pattern
>> matching the macros are able to create (no need to actually implement it
>> now).
>
> How would a pattern matching feature look like and behave?. I can see if
> that would be possible to implement using the AST macros I'm thinking
> about.
>

Well, ideally something like

ast.match{
     2*(?a)  => a+a,
     (?a)+2  => 2+a,
     (?e)    => e,
}

The following would be feasible today, hacking around the usual hygiene 
issues:

mixin(match!("ast",q{
     2*(?a)  => a+a,
     (?a)+2  => 2+a,
     (?e)    => e,
});