crolog

Crystal meets Prolog

Experiment on how swi-prolog can be embedded in crystal.

Ideas/features:

• Load existing prolog files
• Define facts or rules from crystal
• Consume prolog queries in a crystal friendly way (i.e. yield)

Current limitations

• Goals must be single predicate with variables or atoms. (crystal vars/symbols respectively).
• Rules not defines new vars.

Installation

Install swi-prolog

brew install swi-prolog

Ensure pkg-config --libs swipl works. You might need to

export PKG_CONFIG_PATH=/usr/local/Cellar/swi-prolog/7.2.0/libexec/lib/pkgconfig

Add this to your application's shard.yml:

dependencies:
  crolog:
    github: bcardiff/crolog

Usage

require "crolog"

Check Samples

Development

TODO: Write instructions for development

Contributing

1. Fork it ( https://github.com/bcardiff/crolog/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

Contributors

• bcardiff Brian J. Cardiff - creator, maintainer