[Request] Enum bit flags

[OriolCS2]

Hello,

I would like to reopen how AngelScript handles bitwise operations on enums, as discussed previously in this community: https://gamedev.net/forums/topic/709510-enum-bit-flags/

While I understand the technical reasoning that (Flag_A | Flag_B) results in a numeric value that might not be explicitly defined as a single member of the enum forcing an explicit cast like MyEnum(Flag_A | Flag_B) it is not an easy way to remember.

Also my main point to request the feature bitfield is because creating an API is much more clearer if the declaration of a method looks like SetFlags(EntityFlags flags) and not like SetFlags(uint flags). The user will understand faster what he is expected to use.

Thanks for your time again!

[anjo76]

There is alraedy a PR for this #58 although I may not merge it exactly like the PR was provided.

[ZXShady]

There is alraedy a PR for this #58 although I may not merge it exactly like the PR was provided.

You shouldn't I think my code sucks alot lol.

I think that enums should be allowed to have methods then you can instead do

enum Flags {
     A = 1,
     B = 2
     bool test(Flags f) const {
           return (this & f)?1:0;
     }
}

I think it would be pretty cool

[anjo76]

I don't know about that. It sounds a bit overkill. It would be an unnecessary amount of complexity in the compiler with very limited use.

[ZXShady]

I don't know about that. It sounds a bit overkill. It would be an unnecessary amount of complexity in the compiler with very limited use.

Fair enough, you could also instead transform expressions of enum.foo() to foo(enum) I think that would be simpler kinda like extension methods.

But you are right this feature is kinda overkill

[codecat]

Hm, I kinda like the idea of extension methods that work in that way. It should definitely be something more explicit though, like prefixed with ext_ or something (maybe even configurable for compatibility?)

But that's a suggestion for another issue.