I've been wondering, is there a way to make a function that can return what kind of userdata you input is? For example:
local function GetUserDataType(x)
-- Function's code
end
print(GetUserDataType(Color3.new(0,0,0))) -- > Color3
print(GetUserDataType(Instance.new("Part"))) -- > Instance
print(GetUserDataType(BrickColor.new("Really red"))) -- > BrickColor
If anyone knows how or if this is possible, I'd really appreciate it. Thanks!
You could try purposefully causing an error in order to find it. When you attempt to set a non-matching value type to a value, in prints something like this:
bad argument #3 to 'Value' (Color3 expected, got Object)
With this, we can make use of string manipulation to find out what type of value it is:
local function GetUserDataType(x)
if type(x) ~= "userdata" then return end
local temp = Instance.new("Folder", script) -- Create a temporary folder.
temp.Name = "Temp"
local function test()
local v1 = Instance.new("Color3Value", temp) -- Create a value, and set it to x.
v1.Value = x
end
local s, e = pcall(test) -- Protected call, so we can catch the error.
if s then -- Since it was a color value, if it was a success then x is a Color3.
temp:Destroy()
return "Color3"
else -- Otherwise, check the error message for what was received.
temp:Destroy()
local f, l = string.find(e, ", got")
local t = string.sub(e, l + 2, string.len(e) - 1)
return t
end
end
print(GetUserDataType(Color3.new(0,0,0))) -- > Color3
print(GetUserDataType(Instance.new("Part"))) -- > Instance
print(GetUserDataType(BrickColor.new("Really red"))) -- > BrickColor
Hope this helped.
Extending from Pyro's completely valid answer, here's a script for that.
local igetType do
local TypeIdentities = setmetatable({},{__mode='k'});
local workspace = workspace;
local fpor = workspace.FindPartOnRay;
local fpir3 = workspace.FindPartsInRegion3;
local testComponent = Instance.new("Part");
local testGui = Instance.new("ImageLabel");
local etest = game.ChildAdded.connect;
local junk = function()end;
local Enum = Enum;
local getItems = Enum.KeyCode.GetEnumItems;
local enumTest = function(o) return assert(o == Enum or getItems(o),'') end;
local UDim = UDim;
local assert = assert;
local next = next;
local type = type;
local pcall = pcall;
local game = game;
local pcall = pcall;
local gs = game.GetService;
local function checkud(o)
return UDim.new(0,0) + o
end;
local function set(o,p,i)
o[p] = i;
end
igetType = function(o)
local t = type(o);
if t ~= 'userdata' then return t end;
if pcall(gs, game, o) then
t = "Instance";
elseif pcall(set, testComponent, "Position", o) then
t = "Vector3";
elseif pcall(set, testComponent, "CFrame", o) then
t = "CFrame";
elseif pcall(set, testGui, "BackgroundColor3", o) then
t = "Color3";
elseif pcall(set, testGui, "Size", o) then
t = "UDim2";
elseif pcall(set, testComponent, "BrickColor", o) then
t = "BrickColor";
elseif pcall(etest, o, junk) then
t = "Event";
elseif pcall(enumTest, o) then
t = "Enum";
elseif pcall(function() return assert(type(o.disconnect) == 'function' and o.connected ~= nil,'') end) then
t = "Connection";
elseif pcall(fpor, workspace, o) then
t = "Ray";
elseif pcall(fpir3, workspace, o) then
t = "Region3";
elseif pcall(checkud, o) then
t = "UDim";
elseif pcall(set, testGui, "ImageRectOffset", o) then
t = "Vector2";
end
return t;
end
end
The checking function is now iGetType
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2 comments
Thanks
No problem.