On Friday, 21 August 2015 at 21:37:34 UTC, Walter Bright wrote:
On 8/21/2015 4:44 AM, Marc =?UTF-8?B?U2Now7x0eiI=?=
<[email protected]> wrote:
Just change Object.factory to require registration of the
class.
What mechanism do you propose for that?
E.g.:
template factoryConstructors(Args...) {
// using void* because I don't know whether it's possible
// to have a function pointer to a constructor
void*[string] factoryConstructors;
}
void registerFactoryConstructor(Class, Args...)()
if(is(Class == class))
{
factoryConstructors!Args[Class.stringof] = ...;
}
Object factory(Args...)(string className, Args args) {
auto constructor = factoryConstructors!Args[className];
return ...;
}
This even allows to call constructors with arguments. deadalnix's
proposal is a nice way to automate this for an entire class
hierarchy. Another possible mechanisms would be some UDA magic.
