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

[kurapica.igas]

You can use gsub to do the replacement

line = 'frame1 and frame2 or frame3'
 
 
local keywords = {
    ["and"] = "and",
    ["or"] = "or",
}
 
print(line:gsub("[_%w]+", function(word)
    return keywords[word] or string.format("_G[%q]", word)
end))

[glupikreten]

Thank you .. but it doesn't go thru if...

It is not considered as "FRAME and FRAME" but "string with spaces" if you know what i mean.

i ended up doing this... this seems to be working

local keywords = {
    ["and"] = "and",
    ["or"] = "or",
}
 
function f(condition, callback)
    condition_table = {}
    condition_table['and'] = {}
    condition_table['or'] = {}
 
    condition:gsub(
        '[_%w]+',
        function(word)
            -- return keywords[word] or string.format("_G[%q]", word)
            -- text.keywords[word] = string.format('_G[%q]', word)
            if keywords[word] then
                next_keyword = keywords[word]
            else
                if next_keyword then
                    table.insert(condition_table[next_keyword], word)
                else
                    table.insert(condition_table, word)
                end
            end
        end
    )
 
    for k, v in ipairs(condition_table) do
        c = _G[v]
    end
    for k, v in ipairs(condition_table['and']) do
        c = c and _G[v]
    end
    for k, v in ipairs(condition_table['or']) do
        c = c or _G[v]
    end
 
    if(c) then 
        callback()
    end
end

I'm faaaaar from lua developer.. I'm struggling a lot... so if anyone have better solution I'm game

[Xrystal]

If you are talking about strings with just a bunch of spaces in you could used ( strtrim(string[, chars]) - Trim leading and trailing spaces or the characters passed to chars from string. ) and then check to see if it is an empty string.

I got that from this page : https://wowpedia.fandom.com/wiki/Lua...ring_Functions

[SDPhantom]

If the string is valid Lua syntax, you can run it through loadstring().

loadstring("return frame1 and frame2 or frame3")();

Note: loadstring() returns a function if it compiles successfully. This is why there's an empty set of parenthesis at the end of the line. This takes the returned function and calls it on the spot. Be aware loadstring() returns nil and an error string if there's a syntax error. You should have a way of handling this, but this is just a basic example of its use.

[glupikreten]

Thank you all kindly