SetTerminalNodePolicy.h

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#ifndef GUM_MULTI_DIM_FUNCTION_GRAPH_SET_TERMINAL_NODE_POLICY_H
#define GUM_MULTI_DIM_FUNCTION_GRAPH_SET_TERMINAL_NODE_POLICY_H
 
#include <agrum/base/graphs/parts/nodeGraphPart.h>
 
namespace gum {
 
  // clang-format off
  // clang-format on
 
  template < typename GUM_SCALAR >
  class SetTerminalNodePolicy {
    public:
    ~SetTerminalNodePolicy() { clearAllTerminalNodes(); }
 
    // ============================================================================
    // ============================================================================

    void addTerminalNode(const NodeId& n, const GUM_SCALAR& v) {
      if (_map_.exists(n)) *(_map_[n]) += v;
      _map_.insert(n, new GUM_SCALAR(v));
    }

    void eraseTerminalNode(const NodeId& n) {
      if (_map_.exists(n)) _map_.erase(n);
    }

    void clearAllTerminalNodes() {
      for (auto nodeIter = _map_.beginSafe(); nodeIter != _map_.endSafe(); ++nodeIter)
        delete nodeIter.val();
      _map_.clear();
    }

    // ============================================================================
    // ============================================================================

    bool existsTerminalNodeWithId(const NodeId& n) const { return _map_.exists(n); }

    bool existsTerminalNodeWithValue(const GUM_SCALAR& v) const { return terminalNodeId(v) != 0; }

    // ============================================================================
    // ============================================================================

    const GUM_SCALAR& terminalNodeValue(const NodeId& n) const { return *(_map_[n]); }

    const NodeId& terminalNodeId(const GUM_SCALAR& v) const {
      for (auto nodeIter = _map_.beginSafe(); nodeIter != _map_.endSafe(); ++nodeIter)
        if (*(nodeIter.val()) == v) return nodeIter.key();
      return jocker;
    }

    // ============================================================================
    // ============================================================================

    void beginValues() const { _mappy_ = _map_.cbeginSafe(); }

    bool hasValue() const { return _mappy_ != _map_.cendSafe(); }

    void nextValue() const { ++_mappy_; }

    const GUM_SCALAR& value() const { return *(_mappy_.val()); }

    const NodeId& id() const { return _mappy_.key(); }
 
    private:
    HashTable< NodeId, GUM_SCALAR* >                          _map_;
    mutable HashTableConstIteratorSafe< NodeId, GUM_SCALAR* > _mappy_;
 
    const NodeId jocker = 0;
  };
 
}   // End of namespace gum
 
#endif /* GUM_MULTI_DIM_FUNCTION_GRAPH_SET_TERMINAL_NODE_POLICY_H */