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#ifndef HYPERGRAPH_HH
#define HYPERGRAPH_HH
#include "grammar.hh"
#include "semiring.hh"
#include <iostream>
#include <string>
#include <sstream>
#include <vector>
#include <map>
#include <functional>
#include <algorithm>
using namespace std;
typedef double score_t;
typedef double weight_t;
namespace Hg {
class Node;
class Hyperedge {
public:
Node* head;
vector<Node*> tails;
score_t score;
vector<weight_t> f;
unsigned int mark;
//Grammar::Rule rule; FIXME
unsigned int arity_;
unsigned int arity();
bool is_marked();
string s();
};
class Node {
public:
unsigned int id;
string symbol;
unsigned int left;
unsigned int right;
score_t score;
vector<Hyperedge*> outgoing;
vector<Hyperedge*> incoming;
string s();
};
class Hypergraph {
public:
vector<Node*> nodes;
vector<Hyperedge*> edges;
unsigned int arity_;
map<unsigned int, Node*> nodes_by_id;
unsigned int arity();
void reset();
string s();
string json_s();
};
vector<Node*> topological_sort(vector<Node*>& nodes);
void viterbi(vector<Node*>& nodes, map<unsigned int, Hg::Node*> nodes_by_id, Node* root);
} // namespace
#endif
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