Source code for pacman.model.graphs.abstract_single_source_partition

# Copyright (c) 2019-2020 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
from spinn_utilities.overrides import overrides
from pacman.exceptions import PacmanConfigurationException
from pacman.model.graphs import AbstractEdgePartition


class AbstractSingleSourcePartition(
        AbstractEdgePartition, metaclass=AbstractBase):
    """ An edge partition that has a single source vertex.
    """
    __slots__ = [
        # The vertex at the start of all the edges
        "_pre_vertex"
    ]

    def __init__(
            self, pre_vertex, identifier, allowed_edge_types):
        super().__init__(
            identifier=identifier, allowed_edge_types=allowed_edge_types)
        self._pre_vertex = pre_vertex

[docs] @overrides(AbstractEdgePartition.add_edge) def add_edge(self, edge): if edge.pre_vertex != self._pre_vertex: raise PacmanConfigurationException( "A partition can only contain edges with the same pre_vertex") super().add_edge(edge)
@property def pre_vertex(self): """ The vertex at which all edges in this outgoing edge partition\ start. :rtype: AbstractVertex """ return self._pre_vertex @property @overrides(AbstractEdgePartition.pre_vertices) def pre_vertices(self): yield self.pre_vertex