[fpc-pascal] Type helper for JNI pointers

[Benito van der Zander]

Hi,

>
> I haven't used type helpers but why not change to defines like
>
> type
>   jObjectRec = record end;
>   jObject= ^jObjectRec;
>   jClassRec = record end;
>   jClass = ^jClassRec;
>
> or possibly simpler you could try
>   jclass = type(jobject); // I believe this forces a new type and is 
> not just an alias


that looks better.

Who can  change them? These jobject/jclass type definitions are part of 
fpc...





Although type is weird

> type a = type (pointer);
> type b = type (a);

does not compile, duplicate identifier a

> type a = type (pointer);
> type b = type a;

compiles, but a type helper for cannot use self as pointer. self <> nil 
=> operator is not overloaded. But you can do writeln(self);

> type a = type pointer;
> type b = type (a);

does not compile, duplicate identifier a

> type a = type pointer;
> type b = type a;

compiles, and is like a pointer, but unlike case 2, you cannot do 
writeln(self) in the type helper


> type a = type (pointer);
> type b = type (pointer);

does not compile, duplicate identifier

> type a = type (pointer);
> type b = type pointer;

does not compile, error in type definition

> type a = type pointer;
> type b = type (pointer);

compiles

> type a = type pointer;
> type b = type pointer;

compiles




Cheers,
Benito



Am 23.08.2018 um 04:23 schrieb Andrew Haines via fpc-pascal:
>
>
>
> On 08/12/2018 07:42 AM, Benito van der Zander wrote:
>>
>>
>> But this does not work, because fpc thinks jclass and jobject are the 
>> same type, so there is only one type helper for both of the types 
>> allowed.
>>
>> Because it is declared as
>>
>> type
>>      jobject=pointer;
>>      jclass=jobject;
>>
>>
>> What can we do about this?
>>
> I haven't used type helpers but why not change to defines like
>
> type
>   jObjectRec = record end;
>   jObject= ^jObjectRec;
>   jClassRec = record end;
>   jClass = ^jClassRec;
>
> or possibly simpler you could try
>   jclass = type(jobject); // I believe this forces a new type and is 
> not just an alias
>
> Regards,
>
> Andrew
>
>
>
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