How do I get locals from a lua script in java

Question

I have this lua script:

local set = {}
set.name = "DebugMenu"
set.setName = "DebugMenu"
set.descriptionFilenameOverride = ""
set.logicalName = "<DebugMenu>"

In java I have:

LuaValue script = globals.load(..input stream.., "main", "t", globals);

How do I access the values in the table in the lua script?

`local`s are meant to be lexically scoped. You *can* do this with enough debug hackery, but are you sure you can't just make the table a global or parameter to some function instead? — Joseph Sible-Reinstate Monica, Dec 02 '20 at 01:23
I have lots of scripts in this format which I need to get the details from the table from each one from, so not really. — lucas.ss.05, Dec 03 '20 at 23:53

Doyousketch2 · Answer 1 · 2020-12-04T00:24:24.127

You could rename it local_set instead, just so there's no confusion with the half-a-dozen or so other set functions (sethook, setmetatable...) that reside in _G. Then drop that local, so you can access contents from global scope.

https://pgl.yoyo.org/luai/i/debug.getlocal The possibility exists, but it's wonky. https://www.lua.org/pil/23.1.1.html You'd have to scroll through keys 'till you find it.

local stack_level = 1
local stack_index = 1

while true do
    local name, value = debug.getlocal( stack_level, stack_index )
    print()
    if not name then break end

    if type( value ) == 'table' then
        for k, v in pairs( value ) do
            print( k, v, type(v) )
        end
    else  --  could be recursive, if you need to dig deeper
        print( name, value, type(value) )
    end

    stack_index = stack_index +1
end

Edit:

Seems easier just to rename it, so it's safely accessible from within your globals.

local_set = {}

local_set .name = 'DebugMenu'
local_set .setName = 'DebugMenu'
local_set .descriptionFilenameOverride = ''
local_set .logicalName = '<DebugMenu>'

I need to do this in Java using Luaj, is it possible? – lucas.ss.05 Dec 04 '20 at 00:02 — lucas.ss.05, Dec 04 '20 at 00:02

How do I get locals from a lua script in java

1 Answers1