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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Debug tools.
Can be configured by changing values of those variable.
DEBUG = False
Enable this variable to activate debug features (like defined_at parameters). It can slow down Rebulk
LOG_LEVEL = 0
Default log level of generated rebulk logs.
"""
import inspect
import logging
import os
from collections import namedtuple
DEBUG = False
LOG_LEVEL = logging.DEBUG
class Frame(namedtuple('Frame', ['lineno', 'package', 'name', 'filename'])):
"""
Stack frame representation.
"""
__slots__ = ()
def __repr__(self):
return f"{os.path.basename(self.filename)}#L{self.lineno}"
def defined_at():
"""
Get definition location of a pattern or a match (outside of rebulk package).
:return:
:rtype:
"""
if DEBUG:
frame = inspect.currentframe()
while frame:
try:
if frame.f_globals['__package__'] != __package__:
break
except KeyError: # pragma:no cover
# If package is missing, consider we are in. Workaround for python 3.3.
break
frame = frame.f_back
ret = Frame(frame.f_lineno,
frame.f_globals.get('__package__'),
frame.f_globals.get('__name__'),
frame.f_code.co_filename)
del frame
return ret
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