[fpc-devel] Semicolon before else

[Jonas Maebe]

On 29 Jan 2010, at 14:40, Juha Manninen wrote:

>> There is no Modula2 mode. There is an Objective-Pascal mode, but no
>> Objective-C mode.
>
> Sorry, yes. I knew it was Objective-Pascal, used in Mac, but I wrote  
> it wrong.
> I remember reading about Modula2 mode but it must have been just an  
> idea.

Indeed.

>>>> Units compiled in different dialects can indeed be mixed in the  
>>>> same
>>>> program.
>>>
>>> That is cool! The same benefit Parrot or .NET have but with compiled
>>> languages.
>
>> No, it is much more limited.
>
> Ok... which way? They can mix and interact in the same program as  
> you told.

In case of FPC it's just a few handful of dialects that are supported  
by a single compiler. A generic intermediate format can facilitate  
easily combining the output of multiple completely different tools,  
the creation/use of generic instrumentation/analysis/verification  
tools that work on this format, the choice between static and dynamic  
compilation (or a mix), annotations of the generated code in a  
standardised way for use by tools that will process it later, ...

>> You can perfectly use a library compiled with gcc in a gpc-compiled
>> program. You just have to translate the headers
>
> Right. That is the limitation.

As I said, the same limitation goes for FPC: if you want to use a  
library written in Objective-C from Objective-Pascal, you also have to  
translate the headers.

> And the object oriented classes (in C++) you
> can't really translate except for making them flat functions.

GPC also supports several different Pascal dialects (ISO Standard, ISO  
Extended, Mac-style Pascal, Turbo Pascal, GPC-specific, ...), GCC  
supports several different C standards (K&R, C89, C99, ...), G++  
supports different C++ standards, ... And as far as I know, you can  
also combine compiled source files written in different language  
variants in the same final binary.


Jonas