// Copyright (c) 2019-2020 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/

#include "test.hpp"

namespace tao
{
   namespace TAO_PEGTL_NAMESPACE
   {
      // clang-format off
      struct A : one< 'a' > {};
      struct B : one< 'b' > {};
      struct C : one< 'c' > {};
      struct BCB : seq< B, C, B > {};
      struct ABCBA : seq< A, BCB, A > {};
      // clang-format on

      template< typename >
      struct my_action
      {};

      template<>
      struct my_action< A >
      {
         static void apply0( int& a, int& /*b*/, int& /*c*/ )
         {
            ++a;
         }
      };

      template<>
      struct my_action< B >
         : disable_action
      {
         static void apply0( int& /*a*/, int& b, int& /*c*/ )
         {
            ++b;
         }
      };

      template<>
      struct my_action< C >
         : enable_action
      {
         static void apply0( int& /*a*/, int& /*b*/, int& c )
         {
            ++c;
         }
      };

      void unit_test()
      {
         memory_input<> in( "abcba", "" );
         int a = 0;
         int b = 0;
         int c = 0;
         const auto result = parse< ABCBA, my_action >( in, a, b, c );
         TAO_PEGTL_TEST_ASSERT( result );
         TAO_PEGTL_TEST_ASSERT( a == 2 );
         TAO_PEGTL_TEST_ASSERT( b == 0 );
         TAO_PEGTL_TEST_ASSERT( c == 1 );
      }

   }  // namespace TAO_PEGTL_NAMESPACE

}  // namespace tao

#include "main.hpp"
