Lime

Lime

Lime is a tiny object-oriented macro programming language on Ruby/JVM/etc.
Explore Lime API docs »

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This repository contains code of Ruby lime interpreter implementation

What does Lime looks like?

It looks like this:

(class std::String
  (def a_monkey?
    self.start_with 'm))
(p ("mastermm".a_monkey?))

(print 'Hello 'World '\n)
(puts "Hello world")

('(.. 1 10).each' (do (i)
  (puts i)))

(def fold (ls init op)
  (ls.each (do (index-var)
    ([]= LENV index-var (op init index-var)))))

(fold ("  a b c) 0 (do (init name)
  (case name
    ('a 1)
    ('b "str")
    ('c #h))))

((# (a b c) (+ a (+ b c))) 1 2 3) ;=> 4

(module Animal
  (class Duck
    (attr name)
    (initialize (name) (self.name= name))
    (def sleeping self::sleeping)
    (def sleep (self::sleeping= #t))))

(class std::Object
  (def duck? (self.is_a? Duck)))

(-> duck (Duck.new 'Donald))

('(" name sleep sleeping).each' (do (mid)
  (duck.send mid)))

('(" quack walk)'.each (do (mid)
  (duck.define_method mid (do (puts "#{mid}ing...")))))

(duck.quack)
(duck.walk)
(Duck.define_method :is_a_duck??? (do #t))
(-> swissie (Duck.new 'Swissie))
(swissie.is_a_duck???)

(def dangerous_method
  (raise "lime f**king comming"))
(begin
  (dangerous_method)
  (rescue RuntimeError (do (e)
    (puts '(run away)')))
  (ensure (exit)))

(def ^# (args=() body)
  (. macro args body))

(# (puts))

(class std::Number
  (def add (other)
    (args.other.+ self)))

(-> += (# (var val)
  (~> args.^.var (+ var val))))

(def ^print_really (*args) (print args))
(print_really hello, world!!!!) ;-> hello, world!!!

Installation

Add this line to your application's Gemfile:

gem 'limem'

And then execute:

$ bundle

Or install it yourself as:

$ gem install limem

Usage

Quick start:

require 'limem/engine'
engine = Limem::Engine.new
engine.macro(:fortune) do |body, saying|
  puts "#{body}: #{saying}"
end
engine[:picasso] = { name: 'Picasso', saying: '(......wtf???)' }
engine.eval '(fortune picasso::name picasso::saying)'

More information see wiki

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/lime-macro/lime. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the AGPL-3.0 License.

Code of Conduct

Everyone interacting in the Lime project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.