class Hashie::Extensions::Parsers::YamlErbParser

def self.perform(file_path, options = {})
  new(file_path, options).perform
end

def initialize(file_path, options = {})
  @content = File.read(file_path)
  @file_path = file_path.is_a?(Pathname) ? file_path.to_s : file_path
  @options = options
end

def perform
  template = ERB.new(@content)
  template.filename = @file_path
  permitted_classes = @options.fetch(:permitted_classes) { [] }
  permitted_symbols = @options.fetch(:permitted_symbols) { [] }
  aliases = @options.fetch(:aliases) { true }
  # TODO: Psych in newer rubies expects these args to be keyword args.
  YAML.safe_load template.result, permitted_classes, permitted_symbols, aliases
end