// Copyright (c) 2017-2020 Dr. Colin Hirsch and Daniel Frey

// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/

#ifndef TAO_PEGTL_ARGV_INPUT_HPP

#define TAO_PEGTL_ARGV_INPUT_HPP

#include <cstddef>

#include <sstream>

#include <string>

#include <utility>

#include "config.hpp"

#include "eol.hpp"

#include "memory_input.hpp"

#include "tracking_mode.hpp"

namespace tao

{

   namespace TAO_PEGTL_NAMESPACE

   {

      namespace internal

      {

         inline std::string make_argv_source( const std::size_t argn )

         {

            std::ostringstream os;

            os << "argv[" << argn << ']';

            return os.str();

         }

      }  // namespace internal

      template< tracking_mode P = tracking_mode::eager, typename Eol = eol::lf_crlf >

      struct argv_input

         : public memory_input< P, Eol >

      {

         template< typename T >

         argv_input( char** argv, const std::size_t argn, T&& in_source )

            : memory_input< P, Eol >( static_cast< const char* >( argv[ argn ] ), std::forward< T >( in_source ) )

         {

         }

         argv_input( char** argv, const std::size_t argn )

            : argv_input( argv, argn, internal::make_argv_source( argn ) )

         {

         }

      };

#ifdef __cpp_deduction_guides

      template< typename... Ts >

      argv_input( Ts&&... )->argv_input<>;

#endif

   }  // namespace TAO_PEGTL_NAMESPACE

}  // namespace tao

#endif