On Monday, 27 October 2014 at 22:17:25 UTC, bitwise wrote:
This error seems like it may be related some how:
enum index = __traits(getVirtualIndex,
TestClass.instanceMethod);
enum p = TestClass.classinfo.vtbl[index];
The above code will produce this error:
Error: typeid(main.TestClass).vtbl is not yet implemented at
compile time
but if this is the problem, shouldn't Both of the test cases
fail?
You shouldn't need the vtbl at compile-time, only the index of
the method. The method indices within the vtbl are computed,
which is what getVirtualIndex gives you, but CTFE doesn't support
directly accessing the vtbl yet. That being said, you only need
to worry about any of this if you want to support virtual methods
and have it invoke the actual overridden method, not the one you
have saved through reflection. (For example, if Bar : Foo
overrides foo, and you generated reflection info for Foo, it
would call Foo.foo instead of Bar.foo even if passed in an
instance of Bar.)
It's hard to tell exactly what you're trying to do in your
original code, but one thing to keep in mind is that something
like Foo!(TestClass.TestInstance) may mean multiple things, as
the method has overloads. At some point you may need to use
__traits(getOverloads) (such as in
https://shardsoft.com/stash/projects/SHARD/repos/shardtools/browse/source/ShardTools/Reflection.d?until=45ded3019f3f05d7b68e5746d34da1de7433ccf6#1202)
to get the actual methods which you can then get a function
pointer for (again though, requires more effort for properly
handling virtual methods).
