RVNC

Ruby Variable Name Collector.

RVNC collects variable name by using RubyVM::AST.

Argument names don't supported.

require 'RUBY_VERSION >= 2.6.0preview2'

gem 'rvnc'

Or install it yourself as:

$ gem install rvnc

example.rb

$global = 'global'
foo = 1
bar = 'hi'
BAZ = :baz
a, *b = [1, 2, 3]

class A
  @@test = 'test'

  def initialize
    @name = 'test'
  end
end

run rvnc command

$ rvnc example.rb

result

+---------+---------------+
| Name    | Location      |
+---------+---------------+
| $global | example.rb:1  |
| foo     | example.rb:2  |
| bar     | example.rb:3  |
| BAZ     | example.rb:4  |
| a       | example.rb:5  |
| b       | example.rb:5  |
| @@test  | example.rb:8  |
| @name   | example.rb:11 |
+---------+---------------+

If you specify a directory path, it collects recursively.

The gem is available as open source under the terms of the MIT License.

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