Nonterminal_db.h

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#ifndef NONTERMINAL_DB_H_
#define NONTERMINAL_DB_H_

#include "semantics/Token_map.h"

namespace semantics
{

class Nonterminal_db : public Token_map
{
public:
    static const Key_type& stop_key();
    static const Key_type& low_freq_key();
    static const Key_type& root_key();
    static const Val_type& root_code();
public:
    Nonterminal_db() : Token_map() {}
    Nonterminal_db(std::string file);
    const Key_type& unknown_key() {return low_freq_key();}
};

};

#endif