String parse into frame names

[glupikreten]

Hi,

How would i parse this into proper condition?

local condition
line = 'frame1 and frame2 or frame3'

for token in string.gmatch(line, "[^%s]+") do

   if token == "and" or token == "or" then 
      token = token.." "
   else 
      token = '_G['..token..'] '
   end
   condition =  condition .. token
end

Thank you