Re: Lua round-trip?

[Thijs Schreijer <thijs@...>]

If you retain the original code block, you could append code that replaces the values you need updated before returning it.

But I don't know whether it's acceptable for your usecase

Thijs

-------- Oorspronkelijk bericht --------
Van: Marc Lepage <mlepage@antimeta.com> 
Datum: 
Aan: Lua mailing list <lua-l@lists.lua.org> 
Onderwerp: Lua round-trip?

Hi, suppose I have a file containing data like:

return {

    {

        name='foo',

        val=42,

        _onA_ = function(x)

            return doSomething(x)

        end,

    },

    {
        name='bar',
        val=123,
        _onA_ = function(x)

            return doSomethingElse(x)

        end,
        _onB_ = function(x)

            return doAnotherThing(x)

        end,
    },

}

I want to read in the file, manipulate some of the members (like name, val), and then write it out again. But I want to preserve the functions (onA, onB) as they are.

Any tips for how to do this?

I guess I can easily write out the data structures and known members by just writing them out (since I know them) and then try to grab the raw text of the functions from the original input file and write that out in the appropriate place. Is that a good idea? Maybe the debug library can help?

Suggestions?