tl API, xy values -> char number

[Frityet]

Hello, I would like to convert the Node's x and y fields into the character number in the text

[hishamhm]

There is no automatic way to do it, currently. You'd have to scan the file yourself, count the length of each line and then sum the lengths from lines 1 to y-1, add y-1 to account for the line breaks, then add x.

What is your use case? Tokens used to store this number in older versions, but they weren't propagated to Nodes.

[Frityet]

There is no automatic way to do it, currently. You'd have to scan the file yourself, count the length of each line and then sum the lengths from lines 1 to y-1, add y-1 to account for the line breaks, then add x.

What is your use case? Tokens used to store this number in older versions, but they weren't propagated to Nodes.

I am trying to create a plugin for the lua-language-server to let me use Teal with the server, where the plugin auto-compiles the code into annotations

global function add(x: integer, y: integer): integer
        return x + y;
end

would become

---@param x integer
---@param y integer
---@return integer
function add(x, y)
        return x + y;
end

[Frityet]

I need to use the char count because how how the plugin API works, where

function OnSetText(uri, text)
    if text:sub(1, 4) ~= '--##' then
        return nil
    end
    local diffs = {}
    diffs[#diffs+1] = {
        start  = 1,
        finish = 4,
        text   = '',
    }

    for localPos, colonPos, typeName, finish in text:gmatch '()local%s+[%w_]+()%s*%:%s*([%w_]+)()' do
        diffs[#diffs+1] = {
            start  = localPos,
            finish = localPos - 1,
            text   = ('---@type %s\n'):format(typeName),
        }
        diffs[#diffs+1] = {
            start  = colonPos,
            finish = finish - 1,
            text   = '',
        }
    end

    return diffs
end

would replace all instances of

local var: integer = 4
``` with
```lua
---@type integer
local var = 4