• E.S. Quinn (7/7) Apr 06 2016 __traits(allMembers, ) has always been pretty much
• Atila Neves (17/24) Apr 08 2016 I just had to change unit-threaded to get it to compile without
• captaindet (5/31) Jul 05 2016 i just tried this trick for the first time. it does not seem to

E.S. Quinn <anonymous example.com> writes:

__traits(allMembers, <symbol>) has always been pretty much 
essential to any non-trivial struct, class, or module-based 
introspection, but given the visibility rules changes in 2.071.0, 
it looks like it's not even allowed to check whether a given 
symbol is public. (i.e. with __traits(getProtection, Type, 
member))

Is there a new, approved way of doing this?

Atila Neves <atila.neves gmail.com> writes:

On Thursday, 7 April 2016 at 05:41:06 UTC, E.S. Quinn wrote:
 __traits(allMembers, <symbol>) has always been pretty much 
 essential to any non-trivial struct, class, or module-based 
 introspection, but given the visibility rules changes in 
 2.071.0, it looks like it's not even allowed to check whether a 
 given symbol is public. (i.e. with __traits(getProtection, 
 Type, member))

 Is there a new, approved way of doing this?

I just had to change unit-threaded to get it to compile without 
deprecation warnings (and in one case a compiler error). I don't 
know of any approved way of doing it, I just did the first thing 
that worked, which was to check if something was private by:

private template isPrivate(alias module_, string moduleMember) {
     mixin(`import ` ~ fullyQualifiedName!module_ ~ `: ` ~ 
moduleMember ~ `;`);
     static if(__traits(compiles, 
isSomeFunction!(mixin(moduleMember)))) {
         enum isPrivate = false;
     } else {
         enum isPrivate = true;
     }
}


Notice the mixed-in import.

Atila

captaindet <2krnk gmx.net> writes:

On Friday, 8 April 2016 at 09:50:52 UTC, Atila Neves wrote:
 On Thursday, 7 April 2016 at 05:41:06 UTC, E.S. Quinn wrote:
 __traits(allMembers, <symbol>) has always been pretty much 
 essential to any non-trivial struct, class, or module-based 
 introspection, but given the visibility rules changes in 
 2.071.0, it looks like it's not even allowed to check whether 
 a given symbol is public. (i.e. with __traits(getProtection, 
 Type, member))

 Is there a new, approved way of doing this?

 I just had to change unit-threaded to get it to compile without 
 deprecation warnings (and in one case a compiler error). I 
 don't know of any approved way of doing it, I just did the 
 first thing that worked, which was to check if something was 
 private by:

 private template isPrivate(alias module_, string moduleMember) {
     mixin(`import ` ~ fullyQualifiedName!module_ ~ `: ` ~ 
 moduleMember ~ `;`);
     static if(__traits(compiles, 
 isSomeFunction!(mixin(moduleMember)))) {
         enum isPrivate = false;
     } else {
         enum isPrivate = true;
     }
 }


 Notice the mixed-in import.

 Atila

i just tried this trick for the first time. it does not seem to 
work for me (Windows/DMD32 D Compiler v2.071.1): it alway returns 
false, even for private members. is there another way? (i have 
the same problem as OP.