Function order when looping throug global state

[napsy]

Hello,

can I iterate through LValue values in the _G global state in order that they're written in the script. Concretely, I would like to execute functions in the up-to-down order. Is that possible?

[yuin]

This is not a GopherLua specific question, so you can do it with pure Lua codes.

local keys = {}
setmetatable(_G, {
  __newindex = function(t, i, v)
    table.insert(keys, i)
    rawset(t, i, v)
  end
})

function f1()
  print("f1")
end

function f2()
  print("f2")
end

for i, key in ipairs(keys) do
   print(tostring(i) .. ":" .. key)
end

Refer to Lua 5.1 reference manual for details.

[napsy]

Cool, can I make the same think using the gopher-lua API? I currently loop through all the objects in _G using ForEach and checking if the LValue is a function. But the order of the objects is random.

[napsy]

I pasted your code into a L.DoString() after I load my script with L.DoFile() but the keys table only fills with two global variables I add and the functions in the script are missing.