On Thursday, 11 August 2016 at 20:27:51 UTC, Michael Coulombe
wrote:
Is there a way to implement "getSymbolOfCall" and
"getDelegateOfCall" such that doit is functionally equivalent
to calling the method directly?
auto doit(C, string methodName, Args...)(C c, Args args) {
alias methodSymbol = getSymbolOfCall!(c, methodName, Args);
pragma(msg, hasUDA!(methodSymbol, "my attr"));
auto dg = getDelegateOfCall!(c, methodName, Args);
return dg(args);
}
They should deal with getting the right overload,
opDispatch-ing, and deducing template arguments from the real
argument list to get a concrete delegate pointer. methodSymbol
should give access to compile-time introspection like full
signature and UDAs.
The ability to do this for non-member functions would be cool
too, but is beyond my use case.
Maybe I'm not understanding correctly, but I think you can use
string mixins:
auto doit(string methodName, C, Args...)(C c, Args args)
{
mixin("return c." ~ methodName ~ "(args);");
}
