library-mirrors/inspect.lua
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refactor type sorting

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kikito 2013-09-14 16:45:31 +02:00
parent 04aea86a32
commit c34213d266
1 changed files with 15 additions and 10 deletions
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25
inspect.lua
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@ -61,21 +61,26 @@ local function isDictionaryKey(k, length)
return not isArrayKey(k, length) return not isArrayKey(k, length)
end end
local sortOrdersByType = setmetatable({ local defaultTypeOrders = {
['number'] = 1, ['boolean'] = 2, ['string'] = 3, ['table'] = 4, ['number'] = 1, ['boolean'] = 2, ['string'] = 3, ['table'] = 4,
['function'] = 5, ['userdata'] = 6, ['thread'] = 7 ['function'] = 5, ['userdata'] = 6, ['thread'] = 7
}, }
{ __index = function (t, k)
if not rawget(t, k) then
return math.huge
end
end })
local function sortKeys(a, b) local function sortKeys(a, b)
local ta, tb = type(a), type(b) local ta, tb = type(a), type(b)
if ta ~= tb then return sortOrdersByType[ta] < sortOrdersByType[tb] end
if ta == 'string' or ta == 'number' then return a < b end -- strings and numbers are sorted numerically/alphabetically
return false if ta == tb and (ta == 'string' or ta == 'number') then return a < b end
local dta, dtb = defaultTypeOrders[ta], defaultTypeOrders[tb]
-- Two default types are compared according to the defaultTypeOrders table
if dta and dtb then return defaultTypeOrders[ta] < defaultTypeOrders[tb]
elseif dta then return true -- default types before custom ones
elseif dtb then return false -- custom types after default ones
end
-- custom types are sorted out alphabetically
return ta < tb
end end
local function getDictionaryKeys(t) local function getDictionaryKeys(t)