{{!

  Copyright (c) Meta Platforms, Inc. and affiliates.

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

}}{{ > Autogen}}
#pragma once

#include "{{program:include_prefix}}{{program:name}}_types.h"
#include "{{program:include_prefix}}{{program:name}}_fatal.h"

#include <fatal/type/enum.h>

#include <type_traits>

{{ > common/namespace_cpp2_begin}}


namespace __fbthrift_refl {
namespace __fbthrift_refl_impl = ::apache::thrift::detail::reflection_impl;

{{#program:enums}}
class {{enum:cpp_name}}_enum_traits {
 public:
  using type = {{ > common/namespace_cpp2}}{{enum:cpp_name}};

 private:
  {{#enum:values}}
  struct __fbthrift_value_{{enum_value:cpp_name}} {
    using name = __fbthrift_strings_{{program:name}}::{{enum_value:name_hash}};
    using value = std::integral_constant<type, type::{{enum_value:cpp_name}}>;
    {{#enum_value:fatal_annotations?}}
    class annotations {
      struct __fbthrift_keys {
        {{#enum_value:fatal_annotations}}
        using {{annotation:safe_key}} = __fbthrift_strings_{{program:name}}::{{annotation:safe_key}};
        {{/enum_value:fatal_annotations}}
      };
      struct __fbthrift_values {
        {{#enum_value:fatal_annotations}}
        using {{annotation:safe_key}} = {{annotation:fatal_string}};
        {{/enum_value:fatal_annotations}}
      };
     public:
      using keys = __fbthrift_keys;
      using values = __fbthrift_values;
      using map = ::fatal::list<
        {{#enum_value:fatal_annotations}}
        ::apache::thrift::annotation<keys::{{annotation:safe_key}}, values::{{annotation:safe_key}}>{{^last?}},{{/last?}}
        {{/enum_value:fatal_annotations}}
      >;
    };
    {{/enum_value:fatal_annotations?}}
    {{^enum_value:fatal_annotations?}}
    using annotations = __fbthrift_refl_impl::no_annotations;
    {{/enum_value:fatal_annotations?}}
  };

  {{/enum:values}}
  struct __fbthrift_member {
    {{#enum:values}}
    using {{enum_value:cpp_name}} = __fbthrift_value_{{enum_value:cpp_name}};
    {{/enum:values}}
  };

 public:
  using name = __fbthrift_strings_{{program:name}}::{{enum:name}};
  using member = __fbthrift_member;
  using fields = ::fatal::list<
      {{#enum:values}}
      member::{{enum_value:cpp_name}}{{^last?}},{{/last?}}
      {{/enum:values}}
  >;

  {{#enum:fatal_annotations?}}
  class annotations {
    struct __fbthrift_keys {
      {{#enum:fatal_annotations}}
      using {{annotation:safe_key}} = __fbthrift_strings_{{program:name}}::{{annotation:safe_key}};
      {{/enum:fatal_annotations}}
    };

    {{! Declared with __fbthrift_ prefix, so C++ name will not conflict with IDL names. }}
    struct __fbthrift_values {
      {{#enum:fatal_annotations}}
      using {{annotation:safe_key}} = {{annotation:fatal_string}};
      {{/enum:fatal_annotations}}
    };

   public:
    using keys = __fbthrift_keys;
    using values = __fbthrift_values;
    using map = ::fatal::list<
      {{#enum:fatal_annotations}}
      ::apache::thrift::annotation<keys::{{annotation:safe_key}}, values::{{annotation:safe_key}}>{{^last?}},{{/last?}}
      {{/enum:fatal_annotations}}
    >;
  };

  {{/enum:fatal_annotations?}}
  {{^enum:fatal_annotations?}}
  using annotations = __fbthrift_refl_impl::no_annotations;

  {{/enum:fatal_annotations?}}
  static char const *to_string(type e, char const *fallback) {
    switch (e) {
      {{#enum:values}}
      case type::{{enum_value:cpp_name}}: return "{{enum_value:cpp_name}}";
      {{/enum:values}}
      default: return fallback;
    }
  }
};

{{/program:enums}}
} // __fbthrift_refl

{{#program:enums}}
FATAL_REGISTER_ENUM_TRAITS(
  __fbthrift_refl::{{enum:cpp_name}}_enum_traits,
  ::apache::thrift::detail::type_common_metadata_impl<
      {{program:name}}_tags::module,
      ::apache::thrift::reflected_annotations<__fbthrift_refl::{{enum:cpp_name}}_enum_traits::annotations>,
      static_cast<::apache::thrift::legacy_type_id_t>({{enum:legacy_type_id}}ull)
  >
);
{{/program:enums}}
{{ > common/namespace_cpp2_end}}