[dmd-internals] How important are the exact formats of __DATE__, __TIME__, and __TIMESTAMP___?

[Jacob Carlborg]

On 9 mar 2011, at 20:18, Jonathan M Davis wrote:

> On Wednesday, March 09, 2011 09:28:05 Jacob Carlborg wrote:
>> On 9 mar 2011, at 05:52, Jonathan M Davis wrote:
>>> On Tuesday 08 March 2011 20:46:49 Andrei Alexandrescu wrote:
>>>> I understand. If I could, I'd kindly discourage you from working on it.
>>>> Its existence would stifle the impetus to work on general lexing and
>>>> parsing frameworks (a la highly integrated lex/yacc using D's
>>>> generational capabilities). Those in turn would push the compiler
>>>> forward and would help fixing bugs, and would offer the proverbial
>>>> fishing rod (tools for parsing any language) instead of fish (a lexer
>>>> and a parser for D itself).
>>> 
>>> Well, I fully support a generic lexer, but I also see value in a lexer
>>> which closely follows what the front end is doing for D. But it's not
>>> like I've been making huge progress on it and am about to submit it for
>>> review. I have too much other stuff on my plate to blow through it like
>>> that.
>>> 
>>> Though honestly, if I were to be writing a lexer and/or parser for a
>>> compiler of any kind, I'd just do it by hand. It's a lot more flexible
>>> that way. So, even if a solid, generic D lexing tool existed, I'm not
>>> sure that I'd use it for anything.
>>> 
>>> In any case, as I understood it, the result of that original discussion
>>> was that we wanted to have a generic lexing solution (and presumably a
>>> corresponding parsing solution following that) but that we still want a
>>> lexer and parser for D which are close to what the C++ front end is
>>> doing. So, as requested, I've slowly been working on that.
>>> 
>>> - Jonathan M Davis
>>> _______________________________________________
>>> dmd-internals mailing list
>>> dmd-internals at puremagic.com
>>> http://lists.puremagic.com/mailman/listinfo/dmd-internals
>> 
>> I completely agree with this, that we need a D lexer (preferably a whole
>> frontend) written in D, included in the standard library. I even hope that
>> one day DMD will use that lexer.
>> 
>> BTW, are basing your work on DDMD?
> 
> No. I haven't looked at DDMD. Walter wanted a fairly direct port of the C++ 
> frontend (with appropriate tweaks for D, but he wants to make sure that it's 
> straightforward to port fixes from one to the other). So, I've just been 
> directly, porting the C++ frontend, adjusting it to be somewhat more idiomatic D 
> as appropriate but generally keeping it fairly close to the C++ implementation.
> 
> - Jonathan M davis
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> dmd-internals at puremagic.com
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Well, that exactly what DDMD does.

-- 
/Jacob Carlborg