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# -*- coding: utf8 -*-
########################################################################################
# This file is part of exhale. Copyright (c) 2017-2024, Stephen McDowell. #
# Full BSD 3-Clause license available here: #
# #
# https://github.com/svenevs/exhale/blob/master/LICENSE #
########################################################################################
"""
Utility functionality for the testing suite.
"""
from __future__ import unicode_literals
try:
from collections.abc import Mapping
except ImportError:
# TODO: remove when dropping python 2.7
from collections import Mapping
def deep_update(orig, override):
"""
Update leaf values of a data structure (nested dictionaries and lists).
**Parameters**
Both ``orig`` and ``override`` should be of the same type. E.g. both ``orig``
and ``override`` are a :class:`python:dict`, or both are a :class:`python:list`.
``orig`` (:class:`python:dict` or :class:`python:list`)
The original data structure.
``override`` (:class:`python:dict` or :class:`python:list`)
The overriding data structure.
**Return**
:class:`python:dict` or :class:`python:list`
The ``orig`` object, updated with the ``override`` values.
"""
if not override:
return orig
for key, val in override.items():
if isinstance(val, Mapping):
try:
deep_update(orig[key], val)
except KeyError:
orig[key] = val
elif isinstance(val, list):
try:
orig_val = orig[key]
if not isinstance(orig_val, list):
raise KeyError
for i, v in enumerate(val):
if not i and val[i] is None:
# ignoring modified list markers
continue
orig_val.append(v)
except KeyError:
orig[key] = val
else:
orig[key] = override[key]
return orig
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