Re: [RFC] Enumerations, Round 2

From: Date: Fri, 29 Jan 2021 17:15:28 +0000
Subject: Re: [RFC] Enumerations, Round 2
References: 1  Groups: php.internals 
Request: Send a blank email to internals+get-113024@lists.php.net to get a copy of this message
On Mon, Dec 28, 2020, at 2:21 PM, Larry Garfield wrote:
> Hello, Internalians!
> 
> After considerable discussion and effort, Ilija and I are ready to 
> offer you round 2 on enumerations.  This is in the spirit of the 
> previous discussion, but based on that discussion a great deal has been 
> reworked.  The main change is that Enumeration Cases are now object 
> instances of the Enumeration class rather than their own class.  Most 
> of the other changes are knock-on effects of that.
> 
> Of particular note:
> 
> * Cases may not have methods or constants on them.  They're just dumb values.
> * Enums themselves may have methods, static methods, or constants.
> * Traits are supported, as long as they don't have properties.
> * The value() method on scalar enums is now a property.
> 
> The full RFC is here, and I recommend reading it again in full given 
> how much was updated.
> 
> https://wiki.php.net/rfc/enumerations
> 
> The implementation is 98% complete; there's still a few lagging bits in 
> reflection, and some opcache bugs that Ilija is still stomping on.
> 
> There are a few outstanding questions listed that we would like 
> feedback on.  We're not entirely certain which direction to go with 
> them, for reasons explained in the RFC.  Input on those is especially 
> welcome.
> 
> Happy New Year.  May it be enumerable.

And we're back again.  The RFC has been updated with a steady stream of smaller improvements
based on feedback and testing, and is now in its Final Form(tm) (we think).  The only major change
worth noting is that we renamed things. :-)

An enum with no scalar backing is now called a Pure Enum, made up of Pure Cases.  One that does have
backing values is called a Backed Enum, made up of Backed Cases.  That change is mainly to allow for
future expansion to non-scalar backing static values, should the use case arise.  Reflection was
also reworked a bit to make it more logical.

https://wiki.php.net/rfc/enumerations

At this point, Ilija and I consider the RFC done and ready for a vote.  Baring any major issues
being brought up, we plan to start the vote in the first half of next week, probably Tuesday-ish. 
If you have any other bug reports or tweaks, please speak now or forever hold your patches.

--Larry Garfield


Thread (52 messages)

« previous php.internals (#113024) next »