# Copyright 2019 The TensorTrade Authors.
#
# 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 typing import List
from tensortrade.data.stream.node import Node
[docs]class Stream(Node):
def __init__(self, name: str, array: List[any] = None):
super().__init__(name)
self._array = array if array else []
self._cursor = 0
[docs] def forward(self):
v = self._array[self._cursor]
self._cursor += 1
return v
[docs] def has_next(self) -> bool:
if self._cursor < len(self._array):
return True
return False
[docs] def reset(self):
self._cursor = 0