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posthog/hogvm/python/utils.py
Marius Andra 5c90d21751
feat(hog): nullish coalescing (#23521)
Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>
2024-07-09 13:02:00 +02:00

49 lines
1.2 KiB
Python

import re
from typing import Any
class HogVMException(Exception):
pass
def like(string, pattern, flags=0):
pattern = re.escape(pattern).replace("%", ".*")
re_pattern = re.compile(pattern, flags)
return re_pattern.search(string) is not None
def get_nested_value(obj, chain, nullish=False) -> Any:
if obj is None:
return None
for key in chain:
if nullish and obj is None:
return None
if isinstance(key, int):
if nullish and len(obj) <= key:
return None
obj = obj[key]
else:
obj = obj.get(key, None)
return obj
def set_nested_value(obj, chain, value) -> Any:
if obj is None:
return None
for key in chain[:-1]:
if isinstance(key, int):
obj = obj[key]
else:
obj = obj.get(key, None)
if isinstance(obj, dict):
obj[chain[-1]] = value
elif isinstance(obj, list):
if not isinstance(chain[-1], int):
raise HogVMException(f"Invalid index: {chain[-1]}")
obj[chain[-1]] = value
else:
raise HogVMException(f'Can not set property "{chain[-1]}" on object of type "{type(obj).__name__}"')
return obj