diGraph.cpp

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 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
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#include <agrum/base/graphs/algorithms/generic/pathFinding.h>
#include <agrum/base/graphs/diGraph.h>
#include <agrum/base/graphs/graphElements.h>
 
#ifdef GUM_NO_INLINE
#  include <agrum/base/graphs/diGraph_inl.h>
#endif   // GUM_NO_INLINE
 
namespace gum {
 
  DiGraph DiGraph::completeGraph(int n) {
    DiGraph g;
    g.addNodes(n);
 
    for (int j = 0; j < n; ++j) {
      for (int k = j + 1; k < n; ++k) {
        g.addArc(j, k);
      }
    }
    return g;
  }
 
  DiGraph::DiGraph(Size nodes_size,
                   bool nodes_resize_policy,
                   Size arcs_size,
                   bool arcs_resize_policy) :
      NodeGraphPart(nodes_size, nodes_resize_policy), ArcGraphPart(arcs_size, arcs_resize_policy) {
    GUM_CONSTRUCTOR(DiGraph)
  }
 
  DiGraph::DiGraph(const DiGraph& g) : NodeGraphPart(g), ArcGraphPart(g) { GUM_CONS_CPY(DiGraph) }
 
  DiGraph::DiGraph(DiGraph&& g) : NodeGraphPart(std::move(g)), ArcGraphPart(std::move(g)) {
    GUM_CONS_MOV(DiGraph)
  }
 
  DiGraph::~DiGraph() { GUM_DESTRUCTOR(DiGraph) }
 
  std::string DiGraph::toString() const {
    std::string s = NodeGraphPart::toString();
    s += " , ";
    s += ArcGraphPart::toString();
    return s;
  }
 
  std::string DiGraph::toDot() const {
    std::string strBuff = "digraph {\n";
 
    for (const auto node: nodes())
      strBuff += std::format("     {}{};\n", node, dotNodeLabel(node));
 
    strBuff += "\n";
 
    for (const auto& arc: arcs())
      strBuff += std::format("     {} -> {};\n", arc.tail(), arc.head());
 
    strBuff += "}\n\n";
    return strBuff;
  }

  std::ostream& operator<<(std::ostream& stream, const DiGraph& g) {
    stream << g.toString();
    return stream;
  }
 
  bool DiGraph::hasDirectedPath(const NodeId from, const NodeId to) const {
    return graph::hasDirectedPath(*this, from, to);
  }
 
} /* namespace gum */