Support for enums

[edhgoose]

We're using enum's in the constructor of an object.

Something like:

new Object(Enum::X)

From my research, I can't see a way to do this in the yml config.

In the meantime, I've used a custom instantiator for this case, but I'm wondering if there's a way this could be supported and/or if there's documentation on how to do this?

Thanks!

[theofidry]

Hi!

I honestly have no idea. I guess a solution would to allow to set a backed enum value or the enum name and then the instantiator can take care of casting it to an enum?

[edhgoose]

This sounds sensible. I'm not familiar with the codebase, but how does it work for Constants? Could something similar to that be used?

[theofidry]

Honestly I don't remember how it's done with constants either. I think the best starting point is to write a test doing what you want: https://github.com/nelmio/alice/blob/master/tests/Loader/LoaderIntegrationTest.php#L4073

And from where work out what's missing. IIRC there is two processes: building the fixture which is an abstract representation of the object to build, and then actually creating them. It's probably going to be something about a value resolver https://github.com/nelmio/alice/blob/master/src/Generator/Resolver/Value/ChainableValueResolverInterface.php I guess. But it's also been quite long for me so I can't say for certain

[edhgoose]

Turned out it's already supported and works fine:

My\Class:
    name:
        __construct:
            [
                "some-string",
                <(My\Class\Constants\Enum::X)>,
            ]

Thanks for your help @theofidry - you pointed me in the right direction. It's these lines that do it: https://github.com/nelmio/alice/blob/b9bb1cbe3bbb0e43ae88f739ebfa86e06ad1a169/src/Generator/Resolver/Value/Chainable/EvaluatedValueResolver.php#L65-L75