text: # (c) 2014 Michael DeHaan, <michael@ansible.com>
  #
  # This file is part of Ansible
  #
  # Ansible is free software: you can redistribute it and/or modify
  # it under the terms of the GNU General Public License as published by
  # the Free Software Foundation, either version 3 of the License, or
  # (at your option) any later version.
  #
  # Ansible is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU General Public License for more details.
  #
  # You should have received a copy of the GNU General Public License
  # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
  
  # Make coding more python3-ish
  from __future__ import (absolute_import, division, print_function)
  __metaclass__ = type
  
  import os
  
  from ansible.errors import AnsibleError, AnsibleParserError
  from ansible.module_utils.six import iteritems, string_types
  from ansible.parsing.yaml.objects import AnsibleBaseYAMLObject
  from ansible.playbook.attribute import Attribute, FieldAttribute
  from ansible.playbook.role.definition import RoleDefinition
  from ansible.playbook.role.requirement import RoleRequirement
  from ansible.module_utils._text import to_native
  
  
  __all__ = ['RoleInclude']
  
  
  class RoleInclude(RoleDefinition):
  
      """
      A derivative of RoleDefinition, used by playbook code when a role
      is included for execution in a play.
      """
  
      _delegate_to = FieldAttribute(isa='string')
      _delegate_facts = FieldAttribute(isa='bool', default=False)
  
      def __init__(self, play=None, role_basedir=None, variable_manager=None, loader=None):
          super(RoleInclude, self).__init__(play=play, role_basedir=role_basedir, variable_manager=variable_manager, loader=loader)
  
      @staticmethod
      def load(data, play, current_role_path=None, parent_role=None, variable_manager=None, loader=None):
  
          if not (isinstance(data, string_types) or isinstance(data, dict) or isinstance(data, AnsibleBaseYAMLObject)):
              raise AnsibleParserError("Invalid role definition: %s" % to_native(data))
  
          if isinstance(data, string_types) and ',' in data:
              data = RoleRequirement.role_spec_parse(data)
  
          ri = RoleInclude(play=play, role_basedir=current_role_path, variable_manager=variable_manager, loader=loader)
          return ri.load_data(data, variable_manager=variable_manager, loader=loader)
  