static_assert( __cplusplus > 2020'99 );

#pragma once

#include <Alepha/Alepha.h>

#include <ostream>

#include <Alepha/IOStreams/StackableStreambuf.h>

namespace Alepha::Hydrogen  ::detail::  delimited_list_m
{
	inline namespace exports {}

	using DelimiterWriter= std::function< void ( std::ostream & ) >;
	struct DelimitedList_params
	{
		DelimiterWriter writer;

		explicit
		DelimitedList_params( const std::string delimiter )
			: writer( [delimiter] ( std::ostream &os ) { os << delimiter; } )
		{}

		explicit
		DelimitedList_params( DelimiterWriter writer )
			: writer( writer )
		{}
	};

	struct MarkItem_t {};

	namespace exports
	{
		constexpr MarkItem_t NextItem;;

		using StartDelimitedList= IOStreams::PushStack< DelimitedList_params >;
		constexpr IOStreams::PopStack EndDelimitedList;
	}

	inline namespace impl
	{
		void build_streambuf( std::ostream &, StartDelimitedList && );
		std::ostream &operator << ( std::ostream &os, MarkItem_t ); 
	}
}

namespace Alepha::Hydrogen::inline exports::inline delimited_list_m
{
	using namespace detail::delimited_list_m::exports;
}