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# Copyright 2021 The Pigweed Authors
#
# 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
#
# https://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.
"""Serializes an Environment into a JSON file."""
import json
# Disable super() warnings since this file must be Python 2 compatible.
# pylint: disable=super-with-arguments
class JSONVisitor(object): # pylint: disable=useless-object-inheritance
"""Serializes an Environment into a JSON file."""
def __init__(self, *args, **kwargs):
super(JSONVisitor, self).__init__(*args, **kwargs)
self._data = {}
def serialize(self, env, outs):
self._data = {
'modify': {},
'set': {},
}
env.accept(self)
json.dump(self._data, outs, indent=4, separators=(',', ': '))
outs.write('\n')
self._data = {}
def visit_set(self, set): # pylint: disable=redefined-builtin
self._data['set'][set.name] = set.value
def visit_clear(self, clear):
self._data['set'][clear.name] = None
def _initialize_path_like_variable(self, name):
default = {'append': [], 'prepend': [], 'remove': []}
self._data['modify'].setdefault(name, default)
def visit_remove(self, remove):
self._initialize_path_like_variable(remove.name)
self._data['modify'][remove.name]['remove'].append(remove.value)
if remove.value in self._data['modify'][remove.name]['append']:
self._data['modify'][remove.name]['append'].remove(remove.value)
if remove.value in self._data['modify'][remove.name]['prepend']:
self._data['modify'][remove.name]['prepend'].remove(remove.value)
def visit_prepend(self, prepend):
self._initialize_path_like_variable(prepend.name)
self._data['modify'][prepend.name]['prepend'].append(prepend.value)
if prepend.value in self._data['modify'][prepend.name]['remove']:
self._data['modify'][prepend.name]['remove'].remove(prepend.value)
def visit_append(self, append):
self._initialize_path_like_variable(append.name)
self._data['modify'][append.name]['append'].append(append.value)
if append.value in self._data['modify'][append.name]['remove']:
self._data['modify'][append.name]['remove'].remove(append.value)
def visit_echo(self, echo):
pass
def visit_comment(self, comment):
pass
def visit_command(self, command):
pass
def visit_doctor(self, doctor):
pass
def visit_blank_line(self, blank_line):
pass
def visit_function(self, function):
pass
def visit_hash(self, hash): # pylint: disable=redefined-builtin
pass
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