Re: [fpc-pascal] Generics and Scopes

2016-11-09 Thread African Wild Dog 
2016-11-10 1:30 GMT-02:00 African Wild Dog :

> 2016-11-07 14:15 GMT-02:00 Sven Barth :
>
>> Am 07.11.2016 15:58 schrieb "African Wild Dog" :
>> > It is intended to change such compiler behavior in the future? It is
>> incompatible with Delphi and moreover it force us to break the
>> encapsulation of the Generic types.
>>
>> I can't answer this without you providing an example that fails.
>>
>
> Sorry for the noise. Some of my classes were bad designed. They look like
> this sample (Delphi XE 6 compiles):
>
>  CODE BEGIN 
>
> unit sample;
>
> {$MODE delphi}
>
> interface
>
> type
>   TGenericRecord = record
>   strict private
> Interf: IInterface;
> type
>   TMockIntfObject = record // Nested generic declaration
>   end;
>
>   public
> FValue: T;
> procedure SetValue(Value: T);
>   end;
>
> implementation
>
> { TGenericRecord }
>
> procedure TGenericRecord.SetValue(Value: T);
> begin
>   Interf := TMockIntfObject.Create;
> end;
>
> end.
>
>
>  END 
>
>
>  With fpc i got the error "Fatal: Declation of generic class inside
> another generic class is not allowed".
>
> Best regards
>
>
This is the correct sample:

=== CODE BEGIN ===

unit sample;

{$MODE delphi}

interface

type
  TGenericRecord = record
  strict private
type
  TMockRecord = record // Nested generic declaration
  end;

  public
FValue: T;
procedure SetValue(Value: T);
  end;

implementation

{ TGenericRecord }

procedure TGenericRecord.SetValue(Value: T);
begin
end;

end.


=== END ===

Regards
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Re: [fpc-pascal] Generics and Scopes

2016-11-09 Thread African Wild Dog 
2016-11-07 14:15 GMT-02:00 Sven Barth :

> Am 07.11.2016 15:58 schrieb "African Wild Dog" :
> > It is intended to change such compiler behavior in the future? It is
> incompatible with Delphi and moreover it force us to break the
> encapsulation of the Generic types.
>
> I can't answer this without you providing an example that fails.
>

Sorry for the noise. Some of my classes were bad designed. They look like
this sample (Delphi XE 6 compiles):

 CODE BEGIN 

unit sample;

{$MODE delphi}

interface

type
  TGenericRecord = record
  strict private
Interf: IInterface;
type
  TMockIntfObject = record // Nested generic declaration
  end;

  public
FValue: T;
procedure SetValue(Value: T);
  end;

implementation

{ TGenericRecord }

procedure TGenericRecord.SetValue(Value: T);
begin
  Interf := TMockIntfObject.Create;
end;

end.


 END 


 With fpc i got the error "Fatal: Declation of generic class inside another
generic class is not allowed".

Best regards
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Re: [fpc-pascal] Generics and Scopes

2016-11-07 Thread Sven Barth 
Am 07.11.2016 15:58 schrieb "African Wild Dog" :
> It is intended to change such compiler behavior in the future? It is
incompatible with Delphi and moreover it force us to break the
encapsulation of the Generic types.

I can't answer this without you providing an example that fails.

Regards,
Sven
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Re: [fpc-pascal] Generics and Scopes

2016-11-07 Thread Michael Van Canneyt 



On Mon, 7 Nov 2016, African Wild Dog wrote:


Hello,

I have tried to compile some delphi projects using the latest FPC (3.0.0)
release, and i got several errors related to Ggenerics feature. Reading the
FPC documentation (section 8.8 - A Word About Scope) i have found that FPC
requires that all external types and procedures used in the the Generic
type implementation must be visible when the Generic type is specialized.

It is intended to change such compiler behavior in the future? It is
incompatible with Delphi and moreover it force us to break the
encapsulation of the Generic types.


It may well be that this part of the text is no longer valid. 
Sven Barth would need to look at it to see if it is still so.



Michael.
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[fpc-pascal] Generics and Scopes

2016-11-07 Thread African Wild Dog 
Hello,

I have tried to compile some delphi projects using the latest FPC (3.0.0)
release, and i got several errors related to Ggenerics feature. Reading the
FPC documentation (section 8.8 - A Word About Scope) i have found that FPC
requires that all external types and procedures used in the the Generic
type implementation must be visible when the Generic type is specialized.

It is intended to change such compiler behavior in the future? It is
incompatible with Delphi and moreover it force us to break the
encapsulation of the Generic types.

Best regards
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