text: # Copyright 2016 Google Inc. All Rights Reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #    http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  """Cloud resource filter expression scrubber backend.
  
  A scrubbed expression has all operands replaced by X.
  
  To scrub filter_expression_string:
  
    scrubber = resource_filter_scrub.Backend()
    _, scrubbed_expression_string = scrubber.Rewrite(filter_expression_string)
  """
  
  from __future__ import absolute_import
  from __future__ import division
  
  from googlecloudsdk.core.resource import resource_expr_rewrite
  
  
  class Backend(resource_expr_rewrite.Backend):
    """Cloud resource filter expression scrubber backend."""
  
    def RewriteOperand(self, operand):
      """Rewrites any operand by scrubbing it down to X."""
      return 'X'
  
    def RewriteGlobal(self, call):
      """Rewrites any global restriction by scrubbing it down to X."""
      return 'X'
  