luau
pallene
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luau | pallene | |
---|---|---|
64 | 17 | |
3,595 | 566 | |
2.5% | 4.8% | |
9.0 | 6.0 | |
7 days ago | 12 days ago | |
C++ | Lua | |
MIT License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
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.
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Buzz: A lightweight statically typed scripting language
If you need Lua but also type-safety, how about Luau [1] then?
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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
pallene
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LuaX: A Lua Dialect with JSX
It would have been nice if LuaX was written in Lua.
Forking Pallene (https://github.com/pallene-lang/pallene) would introduce:
- Which for loop method is faster
- Using Lua with C++
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Bog – small, strongly typed, embeddable language
Terra and Nelua are both very different in goals than Teal. Teal is literally gradual types integrated into Lua keeping as many of Lua's idioms as possible (to a fault[1]). Terra and Nelua are both very metaprogrammable systems programming languages. Nelua's goals are primarily to soften C's rough edges, comparable to something like Nim.
There's another one you missed in Pallene[2]. But again, it's goal was to optimize the stack sharing involved in using the C API. It also adds types though and maintains Lua idioms as much as possible.
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Nelua, AOT statically typed Lua
That was somewhat of an entertaining read.
> Terra is C if you replaced the preprocessor with Lua.
This is what is written on the tin.
PUC made there own version of Terra
Pallene http://www.inf.puc-rio.br/~roberto/docs/Gualandi-2020-SCP.pd...
https://github.com/pallene-lang/pallene
https://www.youtube.com/watch?v=H3inzGGFefg
This is a good writeup on all the Alt-Luas https://injuly.in/blog/gsoc/
- data types in function definition
- You can make Lua compiled/statically typed using Teal... It's like TypeScript, but for Lua!
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Lua, a Misunderstood Language
Odd to suggest that if they're interested in Lua, that they should check out Moonscript which is a different language altogether (although it compiles to Lua). But if you insist, something a little more Lua-ish is Teal[1] (gradual types ala TypeScript) or Pallene[2] (companion typed subset of Lua meant to generate optimized C libraries for use with Lua).
- Interesting discussion about lua on Hacker News
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Upcoming interview with Roberto Ierusalimschy
You might be thinking of Pallene (previously named Titan) https://github.com/pallene-lang/pallene
What are some alternatives?
lua-languages - Languages that compile to Lua
LuaJIT - Mirror of the LuaJIT git repository
LuaJIT - Mirror of the LuaJIT git repository
nelua-lang - Minimal, efficient, statically-typed and meta-programmable systems programming language heavily inspired by Lua, which compiles to C and native code.
moonsharp - An interpreter for the Lua language, written entirely in C# for the .NET, Mono, Xamarin and Unity3D platforms, including handy remote debugger facilities.
tl - The compiler for Teal, a typed dialect of Lua
lua-language-server - A language server that offers Lua language support - programmed in Lua
terra - Terra is a low-level system programming language that is embedded in and meta-programmed by the Lua programming language.
moonscript - :crescent_moon: A language that compiles to Lua
luajit2 - OpenResty's Branch of LuaJIT 2