Iterate over symbols in tupleof without instance

[Benjamin Thaut]

Am 15.04.2014 13:25, schrieb Artur Skawina:
> On 04/15/14 12:45, Dicebot wrote:
>> void iterate(T)()
>> {
>>      foreach (index, member; T.init.tupleof)
>>      {
>>          pragma(msg, __traits(identifier, T.tupleof[index]));
>>      }
>> }
>>
>> struct A
>> {
>>      int a, b, c;
>> }
>>
>> void main()
>> {
>>      iterate!A();
>> }
>>
>> Reason why you can't naively iterate over T.tupleof is that current tuple foreach tries to look like normal foreach and thus iteration parameters can't be  types.
>
>     void iterate(T)()
>     {
>         foreach (index, member; typeof(T.tupleof))
>         {
>             pragma(msg, __traits(identifier, T.tupleof[index]));
>         }
>     }
>
> artur
>

I want to iterate over the symbols, not over the types that the symbols 
have. I need to iterate over the symbols, because UDAs are attached to 
the symbols. Because of that none of the here listed solutions work for me.

Here is a small example of what I'm trying to do: 
http://dpaste.dzfl.pl/4645d6537447

And no, I can not use __traits(allMembers, T) and __traits(getMember, T, 
m) because some time ago __traits(getMember, ...) was changed so it can 
no longer access protected members. (obviously it will work if the type 
that should be iterated over is within the same module, but thats not 
the case in practice.)

Kind Regards
Benjamin Thaut