module ActiveShepherd ; end

require 'active_shepherd/active_record_shim'
require 'active_shepherd/aggregate'
require 'active_shepherd/aggregate_root'
require 'active_shepherd/changes_validator'
require 'active_shepherd/deep_reverse_changes'
require 'active_shepherd/method'
require 'active_shepherd/methods/apply_changes'
require 'active_shepherd/methods/apply_state'
require 'active_shepherd/methods/query_changes'
require 'active_shepherd/methods/query_state'
require 'active_shepherd/traversal'
require 'active_shepherd/version'

module ActiveShepherd
  AggregateMismatchError = Class.new(StandardError)
  BadChangeError         = Class.new(StandardError)
  InvalidChangesError    = Class.new(StandardError)

  def self.deep_reverse_changes(changes)
    DeepReverseChanges.new(changes).reverse
  end
end