view hgext/fsmonitor/pywatchman/compat.py @ 38146:009aa4af5093

graft: factor out function to read graft state in separate function

Fatcoring out the logic in a separate function will help us in adding
conditional logic for different versions of graft state files.

Differential Revision: https://phab.mercurial-scm.org/D3651

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from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
# no unicode literals

'''Compatibility module across Python 2 and 3.'''

import sys

PYTHON3 = sys.version_info >= (3, 0)

# This is adapted from https://bitbucket.org/gutworth/six, and used under the
# MIT license. See LICENSE for a full copyright notice.
if PYTHON3:
    def reraise(tp, value, tb=None):
        try:
            if value is None:
                value = tp()
            if value.__traceback__ is not tb:
                raise value.with_traceback(tb)
            raise value
        finally:
            value = None
            tb = None
else:
    exec('''
def reraise(tp, value, tb=None):
    try:
        raise tp, value, tb
    finally:
        tb = None
'''.strip())

if PYTHON3:
    UNICODE = str
else:
    UNICODE = unicode