CODEWITHSUNDEEP
lua
economiseRBLX
economiseRBLX

Reputation: 1

Input to Lua? Just like a console?

I'm trying to make a scripting tutorial for a friend (I'm not too good at it myself but okay) and I'm trying to make it so the input creates an actual line of code that does what they typed. EG:

Input: print("hello")
hello

I understand this is what a console does, but is there any way I can do it with Lua?

Thanks.

Upvotes: 0

Views: 240

Answers (3)

Prynok
Prynok

Reputation: 13

One way to do this would be using the loadstring function.

Example:

run = loadstring("print('Hello World!'") 
run()

Output:

Hello World!

Upvotes: 0

Youka
Youka

Reputation: 2715

load

load (ld [, source [, mode [, env]]])

Loads a chunk.

If ld is a string, the chunk is this string.

...

If there are no syntactic errors, returns the compiled chunk as a function; otherwise, returns nil plus the error message.

local input = [[
    local args = {...}
    print(args[1], args[3]) -- 42   1
    return args[1] + args[2], args[2] + args[3]
]]

print(load(input)(42, 99, 1)) -- 141    100

As you can see, the input has access to globals, you can pass values into his code and get the returns.

Upvotes: 1

Joshua
Joshua

Reputation: 26742

just run the lua command to get a lua "REPL":

$ ./lua
Lua 5.3.1  Copyright (C) 1994-2015 Lua.org, PUC-Rio
> print("hello")
hello
>

Upvotes: 2

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