daw_to_json_fwd.h

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// Copyright (c) Darrell Wright
//
// Distributed under the Boost Software License, version 1.0. (see accompanying
// file LICENSE or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// Official repository: https://github.com/beached/daw_json_link
//
 
#pragma once
 
#include "impl/version.h"
 
#include "impl/daw_json_link_types_fwd.h"
#include "impl/daw_json_serialize_policy.h"
 
namespace daw::json {
  inline namespace DAW_JSON_VER {
    namespace options {
      template<auto... PolicyFlags>
      struct output_flags_t {
        static_assert(
          ( json_details::is_output_option_v<decltype( PolicyFlags )> and ... ),
          "Only valid output flags can be used.  See cookbook "
          "output_options.md" );
        static constexpr json_options_t value =
          json_details::serialization::set_bits(
            json_details::serialization::default_policy_flag, PolicyFlags... );
      };
      template<>
      struct output_flags_t<> {
        static constexpr json_options_t value =
          json_details::serialization::default_policy_flag;
      };
 
      template<auto... PolicyFlags>
      inline constexpr auto output_flags =
        options::output_flags_t<PolicyFlags...>{ };
    } // namespace options
 
    template<typename JsonClass = use_default, typename Value,
             typename WritableType = std::string,
             auto... PolicyFlags DAW_JSON_ENABLEIF(
               concepts::is_writable_output_type_v<
                 daw::remove_cvref_t<WritableType>> )>
    DAW_JSON_REQUIRES(
      concepts::is_writable_output_type_v<daw::remove_cvref_t<WritableType>> )
    constexpr daw::rvalue_to_value_t<WritableType> to_json(
      Value const &value, WritableType &&it = std::string{ },
      options::output_flags_t<PolicyFlags...> = options::output_flags<> );
 
    template<typename JsonClass = use_default, typename Value,
             auto... PolicyFlags>
    inline std::string to_json( Value const &value,
                                options::output_flags_t<PolicyFlags...> );
 
    template<typename JsonElement = use_default, typename Container,
             typename WritableType,
             auto... PolicyFlags DAW_JSON_ENABLEIF(
               concepts::is_writable_output_type_v<
                 daw::remove_cvref_t<WritableType>> )>
    DAW_JSON_REQUIRES(
      concepts::is_writable_output_type_v<daw::remove_cvref_t<WritableType>> )
    constexpr daw::rvalue_to_value_t<WritableType> to_json_array(
      Container const &c, WritableType &&it,
      options::output_flags_t<PolicyFlags...> = options::output_flags<> );
    template<typename JsonElement = use_default, typename Container,
             auto... PolicyFlags>
    inline std::string to_json_array(
      Container const &c,
      options::output_flags_t<PolicyFlags...> = options::output_flags<> );
  } // namespace DAW_JSON_VER
} // namespace daw::json