Store struct tuple of alias and access members through it?

[Timoses]

On Saturday, 7 April 2018 at 19:21:30 UTC, Simen Kjærås wrote:
> import std.meta;
> import std.traits;
>
> // List all member functions, and wrap them such that 
> myFoo.fun(3) can be called as 
> AllMemberFunctions!(typeof(myFoo))[idx](myFoo, 3).
> template AllMemberFunctions(T)
> {
>     template createDg(alias fn)
>     {
>         static if (__traits(isStaticFunction, fn))
>             alias createDg = fn;
>         else
>             ReturnType!fn createDg(ref T ctx, Parameters!fn 
> args)
>             {
>                 ReturnType!fn delegate(Parameters!fn) fun;
>                 fun.funcptr = &fn;
>                 fun.ptr = cast(void*)&ctx;
>                 return fun(args);
>             }
>     }
>
>     alias GetOverloads(string name) = 
> AliasSeq!(__traits(getOverloads, T, name));
>
>     alias AllMemberFunctions = staticMap!(createDg, 
> staticMap!(GetOverloads, __traits(allMembers, T)));
> }
>
> --
>   Simen

Many thanks for this!!! Was really helpful.

I ended up unfolding the struct members into an array of member 
strings and mapping those to either the struct tuple members or 
the struct function members.
This way I can call all members (normal and bitfield members) in 
order.

Result:
https://gist.github.com/Timoses/c78e599e91b8d05be34aefaf75ca3739


This project is really teaching me some template actions : D.