luau
buzz
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luau
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Building a baseline JIT for Lua automatically
As far as I can tell, they aren't.
http://lua-users.org/wiki/SandBoxes
There is a lot of information there, but it doesn't handle resource exhaustion, execution time limits or give any guarantees. It does indicate that it's possible, and has a decent example of the most restrictive setup, which is a good start. But I would for example compare it with Luau's SECURITY.md.
From https://github.com/luau-lang/luau/blob/master/SECURITY.md:
> Luau provides a safe sandbox that scripts can not escape from, short of vulnerabilities in custom C functions exposed by the host. This includes the virtual machine and builtin libraries. Notably this currently does not include the work-in-progress native code generation facilities.
> Any source code can not result in memory safety errors or crashes during its compilation or execution. Violations of memory safety are considered vulnerabilities.
> Note that Luau does not provide termination guarantees - some code may exhaust CPU or RAM resources on the system during compilation or execution.
So, even luau will have trouble with untrusted code, but it specifies exactly what happens and so on. I think that's fair enough.
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Pluto, a Modern Lua Dialect
Alternatively, Luau is a well-supported Lua variant with type checking and performance improvements, aimed more towards being a sandboxed embedded scripting environment.
https://luau-lang.org/
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Buzz: A lightweight statically typed scripting language
If you need Lua but also type-safety, how about Luau [1] then?
[1] https://luau-lang.org/
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Lua Criticism Is Unwarranted
I had the pleasure of working with Lua 5.1 back in the late noughties. For me it's replaced Tcl whenever I want something I can configure above a C library. At the time I used it I found it quite nice but I'll also not forget the hours I wasted tracking down nil table corruptions which could have easily been caught by a type checker.
I had some hope that Luau https://luau-lang.org or Teal https://github.com/teal-language/tl would make things better but with the following example
function foo(x: number): string
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Ask HN: Looking for platforms, other than Roblox, that have adopted Luau
Looking at other replies here, I can see I wasn't the only one who didn't realize there is Lua and Luau. Luau is an extension of Lua: https://luau-lang.org/
> Luau is syntactically backwards-compatible with Lua 5.1 (code that is valid Lua 5.1 is also valid Luau); however, we have extended the language with a set of syntactical features that make the language more familiar and ergonomic.
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Embeddable Common Lisp 23.9.9
Lua is usually the embedded language of choice. If you are focused on security, you could check out the Roblox fork, Luau (https://github.com/Roblox/luau) where the creators took extra care to lock down the language on what scripts could do.
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Creating a simple sandboxed language
Luau - Lua variant by Roblox
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The Warframe Lexicon for Updates
On a side note, I've heard that they recently switched from Lua to Roblox's own fork of Lua, Luau.
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Lua: The Little Language That Could
https://www.youtube.com/results?search_query=luau+roblox&sp=...
Luau
https://github.com/Roblox/luau
Roblox wrote a superset of Roblox Lua which is way faster
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Scripting Resources MegaThread
https://luau-lang.org/ - some documentation, and examples https://create.roblox.com/docs - documentation, tutorials, and examples https://www.youtube.com/user/AlvinBLOX - tutorials https://www.youtube.com/@TheDevKing/videos - tutorials https://www.lua.org/manual/5.1/ - not specific to Roblox, but Lua reference manual https://www.codecademy.com/learn/learn-lua - Lua on Codecademy
buzz
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Buzz: A lightweight statically typed scripting language
FYI, for the interested, https://github.com/buzz-language/buzz/issues/209
> You have to use the nightly build of zig.
ie. `brew install zig && zig build` will not work.
- Buzz Language
- Buzz – A small/lightweight statically typed scripting language
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Show HN: Buzz, strongly typed scripting language written in Zig
I will be interesting to see how this combined number data type plays with the Zig/CPP/C interop feature: https://github.com/buzz-language/buzz#call-czig-code
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Hacker News top posts: Nov 21, 2022
Show HN: Buzz, strongly typed scripting language written in Zig\ (7 comments)
What are some alternatives?
lua-languages - Languages that compile to Lua
zig - General-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
LuaJIT - Mirror of the LuaJIT git repository
berty - Berty is a secure peer-to-peer messaging app that works with or without internet access, cellular data or trust in the network
moonsharp - An interpreter for the Lua language, written entirely in C# for the .NET, Mono, Xamarin and Unity3D platforms, including handy remote debugger facilities.
bun - Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one
lua-language-server - A language server that offers Lua language support - programmed in Lua
LoLa - LoLa is a small programming language meant to be embedded into games.
tl - The compiler for Teal, a typed dialect of Lua
termux-app - Termux - a terminal emulator application for Android OS extendible by variety of packages.
moonscript - :crescent_moon: A language that compiles to Lua
bun - A fast all-in-one JavaScript runtime [Moved to: https://github.com/oven-sh/bun]