mire [ˈmɪʀɛ]

mire analyzes a Ruby project and helps you to find dependencies, call stacks and unused methods. It parses Ruby and Haml files and collects all method definitions and invocations.

• Installation
• Usage
• Configuration
• Dependencies
• TODO

Add this line to your application's Gemfile:

gem 'mire'

And then execute:

$ bundle

Or install it yourself as:

$ gem install mire

First you need to analyze the code and create a .mire_analysis.yml file.

bundle exec mire -a

A Ruby code like

class Foo
  def bar
    buz
  end
end

will lead to this .mire_analysis.yml file.

:bar:
  :definitions:
  - :class: Foo
    :method: :bar
    :file: foo.rb
    :line: 2
  :invocations: []
:buz:
  :definition: []
  :invocations:
  - :class: Foo
    :method: :bar
    :file: foo.rb
    :line: 3

After this the .mire_analysis.yml file can be used to find unused methods for example.

bundle exec mire -u

Checking for unused methods
foo.rb:2 Foo.bar

This result can only be taken as a hint for unused methods. For example ERB files are not being analysed yet. Also dynamic method definitions or invocations are not considered. So mire can't find every usage of a method.

mire can be configured with a .mire.yml file in your project folder. With mire -i a initial configuration file is created.

You can configure which files or folders should be excluded while analyzing the code or when displaying the unused methods.

excluded_files:
  - vendor/**/*

output:
  unused:
    excluded_files:
      - db/migrate/**/*
      - spec/**/*
      - script/**/*
      - lib/**/*

Why is HAML-Lint needed?

HAML-Lint did a great job to write a Ruby code extractor for Haml files. mire is using this extractor.

The current implementation of mire is really basic. It needs to become more robust and the parsed file types (e.g. .erb) needs to be extended.

1. Fork it ( https://github.com/xing/mire/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

Nils Gemeinhardt and Marcus Lankenau

Copyright (c) 2015 XING EVENTS GmbH

Released under the MIT license. For full details see LICENSE included in this distribution.