# Copyright 2021 Zilliz. All rights reserved.
#
# 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.
from towhee.engine.factory import ops, create_op
from towhee.hparam import param_scope
[docs]class DispatcherMixin:
"""Mixin for call dispatcher for data collection.
>>> import towhee
>>> from towhee import register
>>> @register(name='add_1')
... def add_1(x):
... return x+1
>>> dc = towhee.range(5).stream()
>>> dc.add_1['a','b','c']() #doctest: +ELLIPSIS
<map object at ...>
"""
[docs] def resolve(self, path, index, *arg, **kws):
"""Dispatch unknown operators.
Args:
path (str): The operator name.
index (str): The index of data being called on.
Returns:
_OperatorLazyWrapper: The operator that corresponds to the path.
"""
with param_scope() as hp:
locals_ = hp.locals
globals_ = hp.globals
op = None
if '.' not in path:
if path in locals_:
op = locals_[path]
elif path in globals_:
op = globals_[path]
if op is not None and callable(op):
if isinstance(op, type):
instance = op(*arg, **kws)
else:
instance = op
return create_op(instance, path, index, arg, kws)
return getattr(ops, path)[index](*arg, **kws)
