LjTools
port70
LjTools | port70 | |
---|---|---|
11 | 3 | |
251 | 12 | |
- | - | |
0.0 | 2.6 | |
over 1 year ago | about 1 year ago | |
C++ | Lua | |
GNU General Public License v3.0 only | GNU General Public License v3.0 only |
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LjTools
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LuaJIT decompiler that supports GOTO statements?
I dug a little more and came across this tool which does seem to have the capability to view all LuaJIT Bytecode. https://github.com/rochus-keller/LjTools
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A History of Lua
> a large lua game code base, over 4000 files, 1.5 million lines of code
Interesting; how do you manage to keep consistency? Do you have special tools to e.g. detect inadvertent global variables? I once wrote a Smalltalk VM in Lua (https://github.com/rochus-keller/Smalltalk/blob/master/Inter...) which is a much smaller code base but even with this size I quickly would have lost track of e.g. scopes and names without tools I had to write myself (https://github.com/rochus-keller/LJTools).
- Minimalism in Programming Language Design
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KT/COBOL — Choosing a VM edition — I need to hear your experiences with the VM you're currently using for your project.
Most of my languages have VM backends; see e.g. https://github.com/rochus-keller/Oberon; I implemented different backends generating LuaJIT bytecode; a year ago I switched to Mono which is based on ECMA-335; here is a discussion why I switched: https://github.com/rochus-keller/Oberon/releases/tag/IDEv0.9.0; I implemented utility libraries for both LuaJIT and CIL bytecode; see https://github.com/rochus-keller/LjTools/, https://github.com/rochus-keller/Pelib/ and https://github.com/rochus-keller/MonoTools/. I evaluated many VMs and think the mentioned ones are best suited. There were a lot of challenges with both technologies, what is to be expected, and too much to describe here.
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LuaJIT for backend?
LuaJIT is well suited as a backend/runtime environment for custom languages; I did it several times (see e.g. https://github.com/rochus-keller/Smalltalk, https://github.com/rochus-keller/Som/, https://github.com/rochus-keller/Oberon/). I also implemented a bit of infrastructure to ease the reuse: https://github.com/rochus-keller/LjTools. LuaJIT has some limitations though; if you require closures you have to know that the corresponding LuaJIT FNEW bytecode is not yet supported by the JIT, i.e. switches to the interpreter; as a work-around I implemented my own closures; LuaJIT also doesn't support multi-threading, but co-routines; and there is no debugger, and the infrastructure to implement one has limitations (i.e. performance is low when running to breakpoints). For most of my projects this was no issue. Recently I switched to CIL/Mono for my Oberon+ implementation which was a good move. But still I consider LuaJIT a good choice if you can cope with the mentioned limitations. The major advantage of LuaJIT is the small footprint and impressive performance for dynamic languages.
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Writing a Register Based VM
Implementing a VM is certainly interesting, but if you just need a fast backend you could generate LuaJIT bytecode (see e.g. https://github.com/rochus-keller/ljtools/ LuaJitComposer.h/cpp).
- Finl Is Not LaTeX
- (LuaJIT) How to directly modify strings within LuaJIT Bytecode?
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Bytecode for a Register Machine
If you want to re-use LuaJIT as a backend, have e.g. a look at https://github.com/rochus-keller/ljtools
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Favorite Program for writing LUA?
Recently I mostly use https://github.com/rochus-keller/LjTools#lua-parser-and-ide-features
port70
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A History of Lua
The first line tells luacheck that the variables `init` and `handler` are globals, and the second line tells it to ignore lines that contain just whitespace (a quirk the text editor I use uses to manage indenting levels).
[1] https://github.com/spc476/port70/blob/master/port70/handlers...
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In defense of blocks for local scopes
The 'do' keyword introduces a new scope (and can be used anywhere to do so). I format it as the former to be more explicit about the CONF variable being defined by the following code block.
[1] https://github.com/spc476/port70/blob/master/port70.lua#L41
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HTTP Status 418 – I'm a teapot
I added the 418 response code to my gopher server [1]. There was one web bot that constantly hit it and was clueless that it wasn't a web server. It finally got a clue.
[1] https://github.com/spc476/port70
What are some alternatives?
SATySFi - A statically-typed, functional typesetting system
lua-enumerable - A port of ruby's Enumerable module to Lua
ubpf - Userspace eBPF VM
nvim-oxi - :link: Rust bindings to all things Neovim
Oberon - Oberon parser, code model & browser, compiler and IDE with debugger
tl - The compiler for Teal, a typed dialect of Lua
tex-rs - A port of TeX82 to Rust. (WIP)
Prosody IM - IMPORTANT: due to a drive failure, as of 13-Mar-2021, the Mercurial repository had to be re-mirrored, which changed every commit SHA. The old SHAs and trees are backed up in the vault branches. Please migrate to the new branches as soon as you can.
langs
love - LÖVE is an awesome 2D game framework for Lua.
LuaJIT - Mirror of the LuaJIT git repository
hererocks - Python script for installing Lua/LuaJIT and LuaRocks into a local directory