// Copyright (c) 2014-2020 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/

#ifndef TAO_PEGTL_CONTRIB_COUNTER_HPP
#define TAO_PEGTL_CONTRIB_COUNTER_HPP

#include <map>
#include <string>

#include "../config.hpp"
#include "../normal.hpp"

#include "../internal/demangle.hpp"

namespace tao
{
   namespace TAO_PEGTL_NAMESPACE
   {
      struct counter_data
      {
         unsigned start = 0;
         unsigned success = 0;
         unsigned failure = 0;
      };

      struct counter_state
      {
         std::map< std::string, counter_data > counts;
      };

      template< typename Rule >
      struct counter
         : normal< Rule >
      {
         template< typename Input >
         static void start( const Input& /*unused*/, counter_state& ts )
         {
            ++ts.counts[ internal::demangle< Rule >() ].start;
         }

         template< typename Input >
         static void success( const Input& /*unused*/, counter_state& ts )
         {
            ++ts.counts[ internal::demangle< Rule >() ].success;
         }

         template< typename Input >
         static void failure( const Input& /*unused*/, counter_state& ts )
         {
            ++ts.counts[ internal::demangle< Rule >() ].failure;
         }
      };

   }  // namespace TAO_PEGTL_NAMESPACE

}  // namespace tao

#endif
