text: # @license
  # Copyright 2017 Google Inc.
  # 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.
  
  from __future__ import absolute_import
  
  import collections
  import json
  import numbers
  
  import numpy as np
  
  from . import local_volume
  
  min_safe_integer = -9007199254740991
  max_safe_integer = 9007199254740991
  
  def json_encoder_default(obj):
      """JSON encoder function that handles some numpy types."""
      if isinstance(obj, numbers.Integral) and (obj < min_safe_integer or obj > max_safe_integer):
          return str(obj)
      if isinstance(obj, np.integer):
          return str(obj)
      elif isinstance(obj, np.floating):
          return float(obj)
      elif isinstance(obj, np.ndarray):
          return list(obj)
      elif isinstance(obj, (set, frozenset)):
          return list(obj)
      raise TypeError
  
  def json_encoder_default_for_repr(obj):
      if isinstance(obj, local_volume.LocalVolume):
          return '<LocalVolume>'
      return json_encoder_default(obj)
  
  def decode_json(x):
      return json.loads(x, object_pairs_hook=collections.OrderedDict)
  
  def encode_json(obj):
      return json.dumps(obj, default=json_encoder_default)
  
  def encode_json_for_repr(obj):
      return json.dumps(obj, default=json_encoder_default_for_repr)
  