Initial attempt at implementing BeforeFeature using a the new listener API

env.rb

class BeforeFeatureHooks
  def initialize
    @hooks = []
  end
  
  def register_hook(proc)
    @hooks << proc
  end
  
  def run
    @hooks.each do |hook|
      hook.call
    end
  end
end

class BeforeFeatureVisitor
  def initialize(step_mother, io, options)
    @step_mother, @io, @options = step_mother, io, options
  end

  def before_feature(feature)
    $before_feature_hooks.run
  end  
end

$before_feature_hooks = BeforeFeatureHooks.new

def BeforeFeature(&proc)
  $before_feature_hooks.register_hook(proc)
end

AfterConfiguration do |configuration|
  configuration.options[:formats] << ["BeforeFeatureVisitor", nil]
end
 
BeforeFeature do
  puts "moo"
end
 require 'pp'

class BeforeFeatureHooks
  def initialize
    @hooks = []
  end
  
  def register_hook(proc)
    @hooks << proc
  end
  
  def run
    @hooks.each do |hook|
      hook.call
    end
  end
end

class BeforeFeatureVisitor
  def initialize(step_mother, io, options)
    @step_mother, @io, @options = step_mother, io, options
  end

  def before_feature(feature)
    $before_feature_hooks.run
  end  
end

$before_feature_hooks = BeforeFeatureHooks.new

def BeforeFeature(&proc)
  $before_feature_hooks.register_hook(proc)
end

AfterConfiguration do |configuration|
  configuration.options[:formats] << ["BeforeFeatureVisitor", nil]
end
 
BeforeFeature do
  puts "It"
end
 
BeforeFeature do
  puts "works"
end