edgeGraphPart.cpp

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 *   Copyright (c) 2005-2026 by                                             *
 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
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 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
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#include <agrum/base/graphs/parts/edgeGraphPart.h>
 
#ifdef GUM_NO_INLINE
#  include <agrum/base/graphs/parts/edgeGraphPart_inl.h>
#endif   // GUM_NO_INLINE
#include "agrum/base/graphs/graphElements.h"
 
namespace gum {

  EdgeGraphPart::EdgeGraphPart(Size edges_size, bool edges_resize_policy) :
      _edges_(edges_size, edges_resize_policy) {
    GUM_CONSTRUCTOR(EdgeGraphPart);
  }
 
  EdgeGraphPart::EdgeGraphPart(EdgeGraphPart&& s) :
      _edges_(std::move(s._edges_)), _neighbours_(std::move(s._neighbours_)) {
    GUM_CONS_MOV(EdgeGraphPart);
  }
 
  EdgeGraphPart::EdgeGraphPart(const EdgeGraphPart& s) : _edges_(s._edges_) {
    GUM_CONS_CPY(EdgeGraphPart)
 
    // copy the set of neighbours
    _neighbours_.resize(s._neighbours_.capacity());
 
    for (const auto& [key, nodeset]: s._neighbours_) {
      NodeSet* newneigh = new NodeSet(*nodeset);
      _neighbours_.insert(key, newneigh);
    }
 
    // send signals to indicate that there are new edges
    if (onEdgeAdded.hasListener())
      for (const auto& edge: _edges_)
        GUM_EMIT2(onEdgeAdded, edge.first(), edge.second());
  }
 
  EdgeGraphPart::~EdgeGraphPart() {
    GUM_DESTRUCTOR(EdgeGraphPart)
    // be sure to deallocate all the neighbours sets
    _clearEdges_();
  }
 
  void EdgeGraphPart::clearEdges() { _clearEdges_(); }
 
  void EdgeGraphPart::_clearEdges_() {
    for (const auto& elt: _neighbours_)
      delete elt.second;
 
    _neighbours_.clear();
 
    if (onEdgeDeleted.hasListener()) {
      EdgeSet tmp = _edges_;
      _edges_.clear();
 
      for (const auto& edge: tmp)
        GUM_EMIT2(onEdgeDeleted, edge.first(), edge.second());
    } else {
      _edges_.clear();
    }
  }
 
  EdgeGraphPart& EdgeGraphPart::operator=(const EdgeGraphPart& s) {
    // avoid self assignment
    if (this != &s) {
      clearEdges();
 
      _edges_ = s._edges_;
 
      // copy the set of neighbours
      _neighbours_.resize(s._neighbours_.capacity());
 
      for (const auto& [key, nodeset]: s._neighbours_) {
        NodeSet* newneigh = new NodeSet(*nodeset);
        _neighbours_.insert(key, newneigh);
      }
 
      if (onEdgeAdded.hasListener())
        for (const auto& edge: _edges_)
          GUM_EMIT2(onEdgeAdded, edge.first(), edge.second());
 
      GUM_OP_CPY(EdgeGraphPart);
    }
 
    return *this;
  }
 
  EdgeGraphPart& EdgeGraphPart::operator=(EdgeGraphPart&& s) {
    if (this != &s) {
      clearEdges();
      _edges_      = std::move(s._edges_);
      _neighbours_ = std::move(s._neighbours_);
      if (onEdgeAdded.hasListener()) {
        for (const auto& edge: _edges_) {
          GUM_EMIT2(onEdgeAdded, edge.first(), edge.second());
        }
      }
      GUM_OP_MOV(EdgeGraphPart);
    }
    return *this;
  }
 
  std::string EdgeGraphPart::toString() const {
    std::stringstream s;
    bool              first = true;
    s << "{";
 
    for (const auto& edge: _edges_) {
      if (first) first = false;
      else s << ",";
 
      s << edge;
    }
 
    s << "}";
 
    return s.str();
  }
 
  std::ostream& operator<<(std::ostream& stream, const EdgeGraphPart& set) {
    stream << set.toString();
    return stream;
  }
 
} /* namespace gum */