# Copyright 2018 Open Source Robotics Foundation, Inc.
#
# 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.
"""Module for InvalidConditionExpressionError class."""
from typing import List
from ..substitution import Substitution
[docs]
class InvalidConditionExpressionError(ValueError):
"""Raised when an expression being evaluated as a condition is invalid."""
[docs]
def __init__(
self,
expression: str,
unexpanded_expression: List[Substitution],
valid_expressions: List[str]
) -> None:
super().__init__(
"invalid condition expression, expected one of [{}] but got '{}', expanded from '{}'"
.format(
', '.join(valid_expressions),
expression,
' + '.join([str(sub) for sub in unexpanded_expression]))
)