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

[Timon Gehr]

On 02/05/2013 03:14 PM, Jacob Carlborg wrote:
> On 2013-02-05 01:29, Timon Gehr wrote:
>
>> Well, ideally something like
>>
>> ast.match{
>>      2*(?a)  => a+a,
>>      (?a)+2  => 2+a,
>>      (?e)    => e,
>> }
>
> When I think about it, it can't look like that. What's passed to a macro
> needs to be syntactically valid.
>

I'd prefer if it needn't be.

macro match(Context context, Ast ast, string code){
     ...
     if(...) context.error("invalid syntax", code[a..b]);
     // (slice of code describes exact location where error
     // is shown to user at the call site.)
     ...
}