text: # -*- coding: utf-8 -*-
  # Author: Adrián Tóth <adtoth@redhat.com>
  #
  # Copyright (c) 2020, Red Hat, Inc.
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  # THE SOFTWARE.
  
  import re
  from typing import TYPE_CHECKING, Any, Dict, Union
  
  from ansiblelint.rules import AnsibleLintRule
  
  if TYPE_CHECKING:
      from typing import Optional
  
      from ansiblelint.file_utils import Lintable
  
  
  class NestedJinjaRule(AnsibleLintRule):
      id = 'no-jinja-nesting'
      shortdesc = 'Nested jinja pattern'
      description = (
          "There should not be any nested jinja pattern. "
          "Example (bad): ``{{ list_one + {{ list_two | max }} }}``, "
          "Example (good): ``{{ list_one + max(list_two) }}``, "
          "Example (allowed): ``--format='{{'{{'}}.Size{{'}}'}}'``"
      )
      severity = 'VERY_HIGH'
      tags = ['formatting']
      version_added = 'v4.3.0'
  
      pattern = re.compile(r"{{(?:[^{}]*)?[^'\"]{{")
  
      def matchtask(
          self, task: Dict[str, Any], file: 'Optional[Lintable]' = None
      ) -> Union[bool, str]:
          command = "".join(
              str(value)
              # task properties are stored in the 'action' key
              for key, value in task['action'].items()
              # exclude useless values of '__file__', '__ansible_module__', '__*__', etc.
              if not key.startswith('__') and not key.endswith('__')
          )
  
          return bool(self.pattern.search(command))
  