Giter Club home page Giter Club logo

luvit's Introduction

Luvit (Lua + libUV + jIT = pure awesomesauce)

Build Status

Luvit is an attempt to do something crazy by taking node.js' awesome architecture and dependencies and seeing how it fits in the Lua language.

This project is still under heavy development, but it's showing promise. In initial benchmarking with a hello world server, this is between 2 and 4 times faster than node.js. Version 0.5.0 is the latest release version.

Do you have a question/want to learn more? Make sure to check out the mailing list and drop by our IRC channel, #luvit on Freenode.

-- Load the http library
local HTTP = require("http")

-- Create a simple nodeJS style hello-world server
HTTP.createServer(function (req, res)
  local body = "Hello World\n"
  res:writeHead(200, {
    ["Content-Type"] = "text/plain",
    ["Content-Length"] = #body
  })
  res:finish(body)
end):listen(8080)

-- Give a friendly message
print("Server listening at http://localhost:8080/")

Building from git

Grab a copy of the source code:

git clone https://github.com/luvit/luvit.git --recursive

To use the gyp build system run:

cd luvit
./configure
make -C out
tools/build.py test
./out/Debug/luvit

To use the Makefile build system (for embedded systems without python) run:

cd luvit
make
make test
./build/luvit

Debugging

Luvit contains an extremely useful debug API. Lua contains a stack which is used to manipulate the virtual machine and return values to 'C'. It is often very useful to display this stack to aid in debugging. In fact, this API is accessible via C or from Lua.

Stackwalk

require('_debug').stackwalk(errorString)

Displays a backtrace of the current Lua state. Useful when an error happens and you want to get a call stack.

example output:

Lua stack backtrace: error
    in Lua code at luvit/tests/test-crypto.lua:69 fn()
    in Lua code at luvit/lib/luvit/module.lua:67 myloadfile()
    in Lua code at luvit/lib/luvit/luvit.lua:285 (null)()
    in native code
    in Lua code at luvit/lib/luvit/luvit.lua:185 (null)()
    in native code
    in Lua code at [string "    local path = require('uv_native').execpat..."]:1 (null)()

Stackdump

require('_debug').stackdump(string)
luv_lua_debug_stackdump(L, "a message");

Stackdump is extremly useful from within C modules.

Debugger

require('_debug').debugger()

Supports the following commands:

  • quit
  • exit
  • break
  • clear
  • clearall
  • trace
  • bt

The debugger will execute any arbitrary Lua statement by default.

luvit's People

Contributors

alfred-nsh avatar andrewtsao avatar bnoordhuis avatar craigbarnes avatar creationix avatar douyw avatar dvv avatar hnakamur avatar kami avatar kans avatar kengonakajima avatar mhart avatar mjohnsullivan avatar mkandrashoff avatar mmalecki avatar morgabra avatar philips avatar pquerna avatar radare avatar rjemanuele avatar rphillips avatar sh4rk avatar skomski avatar tadeuszwojcik avatar tim-smart avatar

Watchers

 avatar  avatar

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    ๐Ÿ–– Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. ๐Ÿ“Š๐Ÿ“ˆ๐ŸŽ‰

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google โค๏ธ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.