Error 500 on my previous post (MOAI class properties)

[kleibrook]

So I can see that there are a couple of replies to my previous post, but for whatever reason that post is reporting an internal server error when I try to read it

If an admin knows what's up and can fix it that would be great, otherwise if whoever posted replies would be kind enough to reply again...

[sgeos]

You can print the properties in a table like this:

Code: Select all

1. -- Function to print properties of table


2. function printProperties(pTable, pName)


3.   if "table" == type(pTable) then


4.     for k,v in pairs(pTable) do


5.       if "number" == type(k) then


6.         print(pName .. "[" .. k .. "] =", v, "(" .. type(v) .. ")")


7.       else


8.         print(pName .. "." .. k .. " =", v, "(" .. type(v) .. ")")


9.       end


10.     end


11.   else


12.     print(pName .. " =", pTable, "(" .. type(pTable) .. ")")


13.   end


14. end


15.  


16. -- Works with tables...


17. local table = {x=123, y=456, [1]="apples", [2]={x=789, y=0}}


18. printProperties(table, "table")


19.  


20. -- ... but not with user data


21. printProperties(MOAIInputMgr.device, "MOAIInputMgr.device")

[pygy79]

The error 500 is my fault (more on that below).

For the methods of userdatas are stored in the __index of their metatables. When the __index is a table, we can iterate over it. Sometimes, it is a function (MOAIInputMgr.device, for example), and we're out of luck.

The following function prints the fields of both tables and __index (when it is a table), in alphabetic order.
__index fields are prefixed with "-", table fields are prefixed with "=".

Code: Select all

1.  


2. function printFileds(T)


3.         mt = getmetatable(T)


4.         local accm={}


5.         if mt and type(mt.__index)=="table" then


6.                 for n,m in pairs (mt.__index) do


7.                         table.insert(accm,n)


8.                 end


9.                 for _,n in ipairs(accm) do


10.                         print("- "..n)


11.                         print("        "..tostring(mt[n]),"(" .. type(mt[n]) .. ")")


12.                 end


13.                 accm={}


14.         elseif mt and type(mt.__index)=="function" then


15.                 print("# the __index is a function")


16.         end


17.         if type(T) == "table" then


18.                 for n in pairs(T) do


19.                         table.insert(accm,n)


20.                 end


21.                 table.sort(accm)


22.                 for _,n in ipairs(accm) do


23.                         print("- "..n)


24.                         print("        "..tostring(T[n]),"(" .. type(T[n]) .. ")")


25.                 end


26.         else


27.                 print(tostring(T), "(" .. type(T) .. ")")


28.         end


29. end

In my previous post, I posted the output (~2000 lines) of the following code. The forum chokes on it.

Code: Select all

1. --Print the methods of all Moai classes, in alphabetic order.


2. acc= {}


3.  


4. for k,v in pairs(_G) do


5.     if k:find"MOAI" then table.insert(acc,k) end


6. end


7. table.sort(acc)


8. for _,k in ipairs(acc) do


9.         print"\n"


10.         print (k)


11.         printFields(_G[k])


12. end

[kleibrook]

Thanks for the info guys, that will definitely come in handy.

It seems that the take-away though, is that to get complete coverage at least it's still necessary to refer to the headers/source, at least with the current state of MOAI's documentation.