[fpc-devel] Delphi anonymous methods

[Michael Van Canneyt]

On Tue, 5 Mar 2013, Sven Barth wrote:

> Am 05.03.2013 07:56, schrieb Paul Ishenin:
>> 05.03.13, 14:10, Sven Barth wrote:
>> 
>>> ObjFPC mode is not compatible with mode Delphi, because of conscious
>>> decisions. Think for example about the "@" for procedure variable
>>> assignments here or the use of symbolic operator names for overload
>>> declarations, instead of words like Delphi did it. And generics are a
>>> further example.
>> 
>> And I would left (if needed) only those minimal differences. Or even tried 
>> to reduce (removed own generics implementation and left only Delphi 
>> compatible). In any case I would not add more incompatibilities.
>> 
>> Many times the main point to have incompatibilites was: "We implemented it 
>> earlier". But regards generics how we implemeneted it earlier? Even now 
>> they have some bugs/missing features. And in 2009 when Delphi announced 
>> them they had much more (you know of course). That was more a prototype of 
>> generics. But inspite of that we did not drop our own implementation.
> Just to say one thing clear: I will NOT drop FPC's generic implementation and 
> I'll revert every commit that tries to do so, because not only do we have to 
> keep backwards compatibility, but the Delphi syntax is a nightmare to parse.
>
> Mode ObjFPC is not for Delphi compatiblity. It's there to implement a cleaner 
> variant of the (Object) Pascal language (and Michael wrote), and if that 
> means higher maintenance burden, so be it. Somewhen in the future we should 
> do a rewrite of the parser anyway and then we can learn from the problems we 
> faced currently and implement it in a way that we can easily extend the 
> language with different implementations (just like was done for the backend).

+1

Michael.