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1 # Copyright 2009-2013, 2019 Peter A. Bigot
3 # SPDX-License-Identifier: Apache-2.0
31 Add a node without any target to the graph.
33 self.__nodes.add(node)
37 Add a directed edge from the C{source} to the C{target}.
41 self.__edge_map[source].add(target)
43 self.__reverse_map[target].add(source)
44 self.__nodes.add(source)
45 self.__nodes.add(target)
60 self.__roots.add(n)
68 # computes the strongly-connected components
122 if v == scc[-1]:
127 """Return the strongly-connected components in order.
133 This order is preferred over a depth-first-search order for
165 unit_addr = -1