LuauVM - loadstring implemented in LuaU

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1

This project was inspired by vLua but now supports luau types and uses LuauCeption compiler and Fiu VM.
LuauVM.rbxm (687.3 KB)
You are able to use all luau features (+=, -=… and types).
Example usage:

local LuauVM = require(path.to.LuauVM)

--Compile a string
print(LuauVM.compile([[
local a = "hi2" :: string
print(a)]]))

--Pure string
LuauVM([[
local a = "hi1" :: string
print(a)
]])()

--Precompiled bytecode.
LuauVM([[BgMCBXByaW50A2hpMgABAgAAAQIABkEAAAAMAAEAAAAAQAUBAgAVAAIBFgABAAMDAQQAAABAAwIAAQABGAABAAAAAAEAAAAAAA==]], true)()

image

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Q: Why use FiU instead of LuauCeption interpreter?
A: Fiu is much faster than luauception’s luau interpreter and much more compact.

3

whats the difference between this and loadstring()

4

none, but instead of only being able to use loadstring on server you can now use it on client too

2 Likes
5

Does it compile an actual Luau bytecode?
I’m just thinking about writing a preprocessor (compiler, really) to optimize Luau code (mostly inlining).
If so, that would be a really great resource.
Have you written the compiler yourself or taken code from somewhere?

6

Yeah Luau is always compiled(unlike python). Not into cpu instructions, but into bytecode for interpreter to execute. As i said compiler was taken from LuauCeption github:

Edit:
Yes it compiles actual luau bytecode.
Edit 2:
Its improtant to note that LuauCeption takes actual luau compiler and converts it to luau using Rerumu’s Spider.

1 Like
7

You don’t know how much I needed this :face_with_hand_over_mouth:

8

This needs to be boosted more, genuinely works better then most Luau VMs around at the minute, especially with the new getfenv() changes with sandboxing

1 Like
9

Yeah I agree! I also modified LuauVM to accept custom env’s and other features!