Lit

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ATENTION: This project is a work in progress

This is my first attempt on language design. My initial goals are:

• Be pretty straightforward and simple:
  • If the same concept/syntax could be used in other parts of the language, great!
  • It will be interpreted, because this should keep things simpler.
• Be functional:
  • I wanna see how far I can go with functions and hashes.
  • It has to have good function support (anonymous, composition, pipe operator).
  • It has to be immutable.
• I don't know about types yet:
  • I'll keep them out just for simplicity.
  • I'm not decided on how to handle null values.
• Be beautiful:
  • I'm a Rubyist, afterall. So, beautiful code matters.
  • I want to keep the language consistent, yet.
• Don't take it too serious:
  • This is my first language, so I want it to be fun (and learn from experience).
  • Speed will be nice (since it's implemented in Crystal), but it's not priority.

Installation

TODO: Write installation instructions here

Usage

# Common functional approach
sum = { |l| List.head(l) + sum(List.tail(l)) }

# OO-like syntax
length = { |l| 1 + l.tail().length() }

# Ruby blocks as anonymous functions
mean = { |l| sum(l) / length(l) }

notes = [1, 2, 3]

# This
notes |> mean |> puts
# => 2

# is equivalent to
puts(mean(notes))
# => 2

# and it is equivalent to
notes.mean().puts()
# => 2

# DESIGN NOTE:
# The above expression is *not* beautiful.
# If I want to keep this oo-like call, it shouldn't require parenthesis.
# Maybe I cannot implement this in the first version.
notes.mean.puts
# => 2

Grammar

primary = "true" | "false" | "nil" | NUMBER | STRING | IDENTIFIER | "(" expression ")"

Development

TODO: Write development instructions here

Contributing

1. Fork it (https://github.com/your-github-user/lit/fork)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request