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Replace flush in contract with in-place renumbering

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Patrick Niklaus
2017-08-18 23:52:36 +00:00
committed by Patrick Niklaus
parent 26c909b64b
commit e011c60e12
3 changed files with 47 additions and 77 deletions
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include/util/dynamic_graph.hpp
+12 -4
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@@ -351,17 +351,25 @@ template <typename EdgeDataT> class DynamicGraph
edge_list[edge].target = old_to_new_node[edge_list[edge].target];
old_to_new_edge[edge] = new_edge_index++;
}
// and all adjacent empty edges
for (auto edge = EndEdges(node); edge < number_of_edges && isDummy(edge); edge++)
node_array[node].first_edge = new_first_edge;
}
auto number_of_valid_edges = new_edge_index;
// move all dummy edges to the end of the renumbered range
for (auto edge : util::irange<NodeID>(0, edge_list.size()))
{
if (old_to_new_edge[edge] == SPECIAL_EDGEID)
{
BOOST_ASSERT(isDummy(edge));
old_to_new_edge[edge] = new_edge_index++;
}
node_array[node].first_edge = new_first_edge;
}
BOOST_ASSERT(std::find(old_to_new_edge.begin(), old_to_new_edge.end(), SPECIAL_EDGEID) ==
old_to_new_edge.end());
util::inplacePermutation(edge_list.begin(), edge_list.end(), old_to_new_edge);
// Remove useless dummy nodes at the end
edge_list.resize(number_of_valid_edges);
number_of_edges = number_of_valid_edges;
}
protected: