skinny delegates

[Steven Schveighoffer]

On 7/30/18 5:02 PM, Steven Schveighoffer wrote:
> Does it make sense? Would it be feasible for the language to do this? 
> The type system already casts the delegate pointer to a void *, so it 
> can't make any assumptions, but this is a slight break of the type system.

One possibility to avoid typesystem breakage is to internally treat a 
delegate structure like this:

struct Delegate(RT, PARAMS...)
{
    RT function(PARAMS params) funcptr;
    union
    {
       void *ptr;
       immutable ubyte[(void*).sizeof] context;
    }
}

Whereby the compiler is informed that the context could just be a bunch 
of bytes.

-Steve