AST macros

[Daniel Keep]

David B. Held wrote:
> Daniel Keep wrote:
>> Walter,
>>
>> I've just been going back over my old (and now fairly crusty) coroutine
>> implementation, and realised that macros could make these a *major*
>> feature of D.
>>
>> Ideally, I'd like to see a syntax like this:
>>
>>> coro showfiles(char[] msg)(char[], char[]) // <-- input,output types
>>> {
>>>     char[] path;
>>>     while( (path = yield) != null ) // <-- yield is a protected method
>>>     {
>>>         writefln("%s: %s", msg, path);
>>>     }
>>> }
>> [...]
> 
> I thought Tango had Fibers?
> 
> Dave

Cooperative multithreading does not a coroutine make.  Fibers, IIRC, are
just stack-based threads.  Coroutines are *entirely different*, although
in this particular case they are implemented *using* stack threads.

In any case, I have a working library right now... it's just that the
syntax to use them is rather ugly and a bit messy.

	-- Daniel

-- 
int getRandomNumber()
{
    return 4; // chosen by fair dice roll.
              // guaranteed to be random.
}

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