DCT: D compiler as a collection of libraries

[deadalnix]

Le 14/05/2012 21:21, Roman D. Boiko a écrit :
> On Monday, 14 May 2012 at 19:13:39 UTC, Roman D. Boiko wrote:
>> On Monday, 14 May 2012 at 19:04:20 UTC, Tove wrote:
>>> What if there were two different lex:er modes... with different
>>> struct:s.
>>>
>>> 1. For an IDE with on the fly lexing:
>>> Assumption, the error rate is high.(need to keep much info)
>>>
>>> 2. For the compiler
>>> Assumption, the error rate is non existent, and if there is an error
>>> it really doesn't matter if it's slow.
>>>
>>> So... when choosing the "compiler mode"... and there actually is an
>>> error, then just lex it again, to produce a pretty error message ;)
> ...
>> The problem with multiple lexer implementations is that it might
>> become much more difficult to maintain them.
> Just to clarify: different modes in lexer in my view are like two
> different implementations combined in a non-trivial way (unless
> the difference is minor). So complexity goes from two factors:
> different implementations and how to combine them. I try to avoid
> this.

If both have the same interface, metaprograming can do the magic for you.