Re: Next Version of Lua? - Bitwise Ops & Enum/Flags

[Henk Boom <henk@...>]

2009/6/11 Olivier Hamel <evilpineapple@cox.net>:
> Olivier Hamel wrote:
>>
>> Note that it's not permitted to do:
>>
>> enum "Test"
>> {
>>   "Div",
>>   "Multi",
>>   "Add",
>>   "Sub",
>>   "Assign",
>>   "Call"
>> }
>
> Gah! I'm an idiot, Sorry! Here:
>
> function enum(strEnumSetName, tblEnumList)
>   typecheck(strEnumSetName, "string")
>   typecheck(tblEnumList, "table")
>   return function()
>       for k, v in ipairs(tblEnumList) do
>          HackEnumCntr = HackEnumCntr + 1
>         _G[k] = 2^HackEnumCntr -- Figure something for handling over
> overflows?
>          -- Is it even a possible concern? Never was in my experience...
>       end
>   end
> end

I'm guessing you meant to move "tblEnumList" into the internal
function's args, right?

function enum(strEnumSetName)
  typecheck(strEnumSetName, "string")
  typecheck(tblEnumList, "table")
  return function(tblEnumList)
      for k, v in ipairs(tblEnumList) do
         HackEnumCntr = HackEnumCntr + 1
        _G[k] = 2^HackEnumCntr -- Figure something for handling over
overflows?
         -- Is it even a possible concern? Never was in my experience...
      end
  end
end