ryzom/common/data_common/r2/r2_refid.lua

   1 -- A reference id : object like a string but for reference ids
   2
   3
   4 r2.RefIdMetatable =
   5 {
   6         __eq = function(op1, op2) return op1.Value == op2.Value end,
   7         __le = function(op1, op2) return op1.Value <= op2.Value end,
   8         __lt = function(op1, op2) return op1.Value  < op2.Value end,
   9         __tostring = function(op) return op.Value end
  10 }
  11
  12
  13
  14 function r2.RefId(value)
  15         assert(value ~= r2) -- in case of r2:RefId(value)
  16         if value == nil then value = "" end
  17         local refId = { Value = tostring(value) }
  18         setmetatable(refId, r2.RefIdMetatable)
  19    return refId
  20 end
  21
  22 function r2.isRefId(value)
  23         return type(value) == "table" and getmetatable(value) == r2.RefIdMetatable
  24 end