# Source code for pacman.model.graphs.abstract_edge

# Copyright (c) 2017-2019 The University of Manchester
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from spinn_utilities.abstract_base import AbstractBase, abstractproperty
[docs]class AbstractEdge(object, metaclass=AbstractBase):
""" A directed edge in a graph between two vertices.
"""
__slots__ = ()
@abstractproperty
def label(self):
""" The label of the edge
:rtype: str
"""
@abstractproperty
def pre_vertex(self):
""" The vertex at the start of the edge
:rtype: AbstractVertex
"""
@abstractproperty
def post_vertex(self):
""" The vertex at the end of the edge
:rtype: AbstractVertex
"""