// Copyright 2023 Google LLC

//

// 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

//

//     https://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.

// IWYU pragma: private, include "common/value.h"

// IWYU pragma: friend "common/value.h"

#ifndef THIRD_PARTY_CEL_CPP_COMMON_VALUES_DOUBLE_VALUE_H_

#define THIRD_PARTY_CEL_CPP_COMMON_VALUES_DOUBLE_VALUE_H_

#include <ostream>

#include <string>

#include "absl/base/nullability.h"

#include "absl/status/status.h"

#include "absl/strings/string_view.h"

#include "common/type.h"

#include "common/value_kind.h"

#include "common/values/values.h"

#include "google/protobuf/arena.h"

#include "google/protobuf/descriptor.h"

#include "google/protobuf/io/zero_copy_stream.h"

#include "google/protobuf/message.h"

namespace cel {

class Value;

class DoubleValue;

class DoubleValue final : private common_internal::ValueMixin<DoubleValue> {

 public:

  static constexpr ValueKind kKind = ValueKind::kDouble;

  explicit DoubleValue(double value) noexcept : value_(value) {}

  DoubleValue() = default;

  DoubleValue(const DoubleValue&) = default;

  DoubleValue(DoubleValue&&) = default;

  DoubleValue& operator=(const DoubleValue&) = default;

  DoubleValue& operator=(DoubleValue&&) = default;

  ValueKind kind() const { return kKind; }

  absl::string_view GetTypeName() const { return DoubleType::kName; }

  std::string DebugString() const;

  // See Value::SerializeTo().

  absl::Status SerializeTo(

      const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,

      google::protobuf::MessageFactory* absl_nonnull message_factory,

      google::protobuf::io::ZeroCopyOutputStream* absl_nonnull output) const;

  // See Value::ConvertToJson().

  absl::Status ConvertToJson(

      const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,

      google::protobuf::MessageFactory* absl_nonnull message_factory,

      google::protobuf::Message* absl_nonnull json) const;

  absl::Status Equal(const Value& other,

                     const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,

                     google::protobuf::MessageFactory* absl_nonnull message_factory,

                     google::protobuf::Arena* absl_nonnull arena,

                     Value* absl_nonnull result) const;

  using ValueMixin::Equal;

  bool IsZeroValue() const { return NativeValue() == 0.0; }

  double NativeValue() const { return static_cast<double>(*this); }

  // NOLINTNEXTLINE(google-explicit-constructor)

  operator double() const noexcept { return value_; }

  friend void swap(DoubleValue& lhs, DoubleValue& rhs) noexcept {

    using std::swap;

    swap(lhs.value_, rhs.value_);

  }

 private:

  friend class common_internal::ValueMixin<DoubleValue>;

  double value_ = 0.0;

};

inline std::ostream& operator<<(std::ostream& out, DoubleValue value) {

  return out << value.DebugString();

}

}  // namespace cel

#endif  // THIRD_PARTY_CEL_CPP_COMMON_VALUES_DOUBLE_VALUE_H_