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2.3 KiB

# Copyright (c) 2016 Mirantis, 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.
from yaql.language import utils
class YaqlInterface(object):
def __init__(self, context, engine, receiver=utils.NO_VALUE):
self.__sender = receiver
self.__engine = engine
self.__context = context
def context(self):
return self.__context
def engine(self):
return self.__engine
def sender(self):
return self.__sender
def on(self, receiver):
return YaqlInterface(self.context, self.engine, receiver)
def __getattr__(self, item):
def stub(*args, **kwargs):
context = self.context
args = utils.convert_input_data(args)
kwargs = utils.convert_input_data(kwargs)
limit_func = context('#iter', self.engine)
return utils.convert_output_data(
context(item, self.engine, self.sender)(*args, **kwargs),
limit_func, self.engine)
return stub
def __call__(self, __expression, *args, **kwargs):
context = self.context.create_child_context()
args = utils.convert_input_data(args)
for i, arg_value in enumerate(args):
context['$' + str(i + 1)] = arg_value
kwargs = utils.convert_input_data(kwargs)
for arg_name, arg_value in kwargs.items():
context['$' + arg_name] = arg_value
parsed = self.engine(__expression)
res = parsed.evaluate(context=context)
limit_func = context('#iter', self.engine)
return utils.convert_output_data(res, limit_func, self.engine)
def __getitem__(self, item):
return self.context[item]
def __setitem__(self, key, value):
self.context[key] = value