Flagged enums

thbar · March 25, 2009, 10:42am

Hi,
it seems that the following code isn’t supported:

AnchorStyles.Bottom | AnchorStyles.Left

I believe IronPython supports this (see EnumOps.cs).

Is that syntax planned ?

– Thibaut

thbar · March 25, 2009, 6:23pm

IronRuby should support this. Enum values are ints anyway, so that
behavior shouldn’t be hard to implement.

From: [email protected]
[[email protected]] on behalf of Thibaut BarrÃ¨re
[[email protected]]
Sent: Wednesday, March 25, 2009 2:39 AM
To: ironruby-core
Subject: [Ironruby-core] Flagged enums

Hi,

it seems that the following code isn’t supported:

AnchorStyles.Bottom | AnchorStyles.Left

I believe IronPython supports this (see EnumOps.cs).

Is that syntax planned ?

– Thibaut

thbar · March 26, 2009, 5:41pm

Yes, we can do that.

thanks for the answer.

I’ll try to create some code to handle that manually until then.

cheers,

– Thibaut

thbar · March 25, 2009, 6:28pm

Yes, we can do that.

Tomas

From: [email protected]
[mailto:[email protected]] On Behalf Of Thibaut
BarrÃ¨re
Sent: Wednesday, March 25, 2009 2:39 AM
To: ironruby-core
Subject: [Ironruby-core] Flagged enums

Hi,

it seems that the following code isn’t supported:

AnchorStyles.Bottom | AnchorStyles.Left

I believe IronPython supports this (see EnumOps.cs).

Is that syntax planned ?

– Thibaut

thbar · March 29, 2009, 11:53pm

In case it’s useful to someone else (until flagged enums combination is
supported by IronRuby), I wrote some custom code to support that.
I’m now allowing code like :anchor => [:bottom,:top] in Magic.

Relevant code is here:

Support for flagged enums, ie :anchor => [:bottom,:right] · thbar/magic@e236e6f · GitHub

github.com

thbar/magic/blob/e236e6fa455ea783b42dd08513dea7d80b4705d5/lib/magic/enum_support.rb

# temporary code to support flagged enums (AnchorStyles.Bottom | AnchorStyles.Top)
# this code will be removed when | is implemented on enums in IronRuby
module EnumSupport
  def enum_to_int(enval)
    entype = enval.GetType()
    undertype = Enum.GetUnderlyingType(entype)
    Convert.ChangeType(enval, undertype)
  end
  
  def int_to_enum(entype, value)
    Enum.ToObject(entype, value)
  end
end

cheers,

– Thibaut

thbar · May 26, 2009, 11:46pm

Hi,

a follow-up on flagged enums:

AnchorStyles.Bottom | AnchorStyles.Left

I seem to remember a commit that mentioned it was supported, but I’m not
sure.

Currently, either “||” or “|” fail on this example (| gives method
undefined, || returns only Bottom).

Has it been implemented ? Should I file a bug for this ? (or is the
syntax
different ?)

cheers,

–Thibaut

thbar · June 17, 2009, 8:59am

This works now:

AnchorStyles.bottom | AnchorStyles.left
=> Bottom, Left

Jim, there should be specs for this. Where should I add them?
enum/mapping_spec.rb or somewhere else?

From: [email protected]
[mailto:[email protected]] On Behalf Of Thibaut
BarrÃ¨re
Sent: Tuesday, May 26, 2009 2:38 PM
To: [email protected]
Subject: Re: [Ironruby-core] Flagged enums

Hi,

a follow-up on flagged enums:

AnchorStyles.Bottom | AnchorStyles.Left

I seem to remember a commit that mentioned it was supported, but I’m not
sure.

Currently, either “||” or “|” fail on this example (| gives method
undefined, || returns only Bottom).

Has it been implemented ? Should I file a bug for this ? (or is the
syntax different ?)

cheers,

–Thibaut

thbar · June 17, 2009, 9:11am

Hi,

This works now:

AnchorStyles.bottom | AnchorStyles.left

=> Bottom, Left

thanks!

– Thibaut