https://github.com/ps2/simple_logic

Boolean logic parsing and evaluation
https://github.com/ps2/simple_logic

Last synced: about 1 year ago
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Boolean logic parsing and evaluation

• Host: GitHub
• URL: https://github.com/ps2/simple_logic
• Owner: ps2
• License: mit
• Created: 2014-05-30T18:27:21.000Z (about 12 years ago)
• Default Branch: master
• Last Pushed: 2014-06-02T17:23:55.000Z (almost 12 years ago)
• Last Synced: 2025-02-02T05:25:24.710Z (over 1 year ago)
• Language: Ruby
• Size: 160 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.txt

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README

          
# SimpleLogic

A ruby gem that parses and evaluates simple boolean statements specified as a string.  Useful for evaluating user supplied business rules in your application without using ruby's eval().

[![Build Status](https://travis-ci.org/ps2/simple_logic.svg?branch=master)][travis]

[travis]: http://travis-ci.org/ps2/simple_logic

## Installation

Add this line to your application's Gemfile:

    gem 'simple_logic'

And then execute:

    $ bundle

Or install it yourself as:

    $ gem install simple_logic

## Usage

```ruby

context = { hungry: true, fridge_empty: true, restaurant_nearby: true}

in_luck = SimpleLogic.eval("hungry && !fridge_empty || restaurant_nearby", context)

# => true

```

## Contributing

1. Fork it

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 new Pull Request