Module:LoadData/sandbox explained

local p =

-- Finds the next key key <= or >= the given i.-- operator is ±1local function findItemRange(data, i, operator) local bestIndex = nil i = i * operator for k, v in pairs(data) do local kop = type(k)

'number' and k * operator if kop and kop <= i and (bestIndex

nil or kop > bestIndex * operator) then bestIndex = k end end if bestIndex then return data[bestIndex] else return nil endend

local function load(datamodule, frame) local args = frame.args local data = mw.loadData(datamodule) for i = 1, 20 do if args[i] then data = data[tonumber(args[i]) or args[i]] elseif args[i .. ' lteq'] then data = findItemRange(data, tonumber(args[i .. ' lteq']), 1) elseif args[i .. ' gteq'] then data = findItemRange(data, tonumber(args[i .. ' gteq']), -1) else break end end if data

nil then return args['if_nil'] -- not a required argument, OK to return nil here. end if type(data)

'table' then -- Put the table into another table because the return value of loadData -- is a "fake" table that only has certain metamethods. local realdata = for k, v in pairs(data) do realdata[k] = v end data = realdata else data = end if args['template'] then return mw.text.unstripNoWiki(args['template']):format(unpack(data)) elseif args['preprocess'] then return frame:preprocess(mw.text.unstripNoWiki(args['preprocess']):format(unpack(data))) else return table.concat(data) endend

return setmetatable