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# *****************************************************************************
#
# 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
#
# http://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.
#
# See NOTICE file for details.
#
# *****************************************************************************
from __future__ import annotations
import typing
# This is a superset of the keywords in Python.
# We use this so that jpype is a bit more version independent.
# Adding and removing keywords from this list impacts the exposed interfaces,
# and therefore is technically a breaking change.
_KEYWORDS = {
'False',
'None',
'True',
'and',
'as',
'assert',
'async',
'await',
'break',
'class',
'continue',
'def',
'del',
'elif',
'else',
'except',
'exec',
'finally',
'for',
'from',
'global',
'if',
'import',
'in',
'is',
'lambda',
'nonlocal',
'not',
'or',
'pass',
'print', # No longer a Python 3 keyword. Kept for backwards compatibility.
'raise',
'return',
'try',
'while',
'with',
'yield',
}
def pysafe(s: str) -> typing.Optional[str]:
"""
Given an identifier name in Java, return an equivalent identifier name in
Python that is guaranteed to not collide with the Python grammar.
"""
if s.startswith("__") and s.endswith("__") and len(s) >= 4:
# Dunder methods should not be considered safe.
# (see system defined names in the Python documentation
# https://docs.python.org/3/reference/lexical_analysis.html#reserved-classes-of-identifiers
# )
return None
if s in _KEYWORDS:
return s + "_"
return s
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