grpc-swift/Sources/GRPC/Box.swift

/*
 * Copyright 2019, gRPC Authors All rights reserved.
 *
 * 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.
 */
import Foundation

/// Provides a "box" to put a value in.
///
/// Allows large values to be passed around without being copied.
///
/// - Important: This is **NOT** part of the public API.
public final class _Box<T> {
  let value: T

  /// Constructs a box for a value.
  ///
  /// - Important: This is **NOT** part of the public API.
  public init(_ value: T) {
    self.value = value
  }
}