/*

 * Copyright (c) 2016 Spotify AB

 *

 * 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.

 */

#pragma once

#include <spotify/json/detail/macros.hpp>

#include <spotify/json/encode_exception.hpp>

#include <spotify/json/encode_context.hpp>

namespace spotify {

namespace json {

namespace detail {

json_noreturn void fail(const encode_context & /*context*/, const char *error);

json_force_inline void fail_if(

    const encode_context &context,

    const bool condition,

    const char *error) {

  if (json_unlikely(condition)) {

    fail(context, error);

  }

}

template <typename T>

struct has_should_encode_method {

  template <typename U>

  static auto test(int) -> decltype(

      std::declval<U>().should_encode(std::declval<typename U::object_type>()),

      std::true_type());

  template <typename>

  static std::false_type test(...);

 public:

  static constexpr bool value = std::is_same<decltype(test<T>(0)), std::true_type>::value;

};

template <typename codec_type, typename value_type>

typename std::enable_if<!has_should_encode_method<codec_type>::value, bool>::type

json_force_inline should_encode(const codec_type & /*codec*/, const value_type & /*value*/) {

  return true;

}

template <typename codec_type, typename value_type>

typename std::enable_if<has_should_encode_method<codec_type>::value, bool>::type

json_force_inline should_encode(const codec_type &codec, const value_type &value) {

  return codec.should_encode(value);

}

}  // namespace detail

}  // namespace json

}  // namespace spotify