graphConcepts.h

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#ifndef GUM_GRAPH_CONCEPTS_H
#define GUM_GRAPH_CONCEPTS_H
 
#include <concepts>
 
#include <agrum/base/graphs/graphElements.h>
 
namespace gum {


  template < typename T >
  concept GUM_NodeGraphable = requires(const T g, NodeId id) {
    { g.existsNode(id) } -> std::convertible_to< bool >;
    { g.size() } -> std::convertible_to< Size >;
    { g.empty() } -> std::convertible_to< bool >;
  };

  template < typename T >
  concept GUM_DiGraphable = GUM_NodeGraphable< T > && requires(const T g, NodeId u, NodeId v) {
    { g.existsArc(u, v) } -> std::convertible_to< bool >;
    { g.parents(u) } -> std::convertible_to< const NodeSet& >;
    { g.children(u) } -> std::convertible_to< const NodeSet& >;
  };

  template < typename T >
  concept GUM_UndiGraphable = GUM_NodeGraphable< T > && requires(const T g, NodeId u, NodeId v) {
    { g.existsEdge(u, v) } -> std::convertible_to< bool >;
    { g.neighbours(u) } -> std::convertible_to< const NodeSet& >;
  };

  template < typename T >
  concept GUM_MixedGraphable = GUM_DiGraphable< T > && GUM_UndiGraphable< T >;

 
}   // namespace gum
 
#endif   // GUM_GRAPH_CONCEPTS_H