|  | // Protocol Buffers - Google's data interchange format | 
|  | // Copyright 2024 Google Inc.  All rights reserved. | 
|  | // | 
|  | // Use of this source code is governed by a BSD-style | 
|  | // license that can be found in the LICENSE file or at | 
|  | // https://developers.google.com/open-source/licenses/bsd | 
|  |  | 
|  | /// Swift specific additions to simplify usage. | 
|  | extension GPBUnknownField { | 
|  |  | 
|  | /// The value of the field in a type-safe manner. | 
|  | public enum Value: Equatable { | 
|  | case varint(UInt64) | 
|  | case fixed32(UInt32) | 
|  | case fixed64(UInt64) | 
|  | case lengthDelimited(Data)  // length prefixed | 
|  | case group(GPBUnknownFields)  // tag delimited | 
|  | } | 
|  |  | 
|  | /// The value of the field in a type-safe manner. | 
|  | public var value: Value { | 
|  | switch type { | 
|  | case .varint: | 
|  | return .varint(varint) | 
|  | case .fixed32: | 
|  | return .fixed32(fixed32) | 
|  | case .fixed64: | 
|  | return .fixed64(fixed64) | 
|  | case .lengthDelimited: | 
|  | return .lengthDelimited(lengthDelimited) | 
|  | case .group: | 
|  | return .group(group) | 
|  | @unknown default: | 
|  | fatalError("Internal error: Unknown field type: \(type)") | 
|  | } | 
|  | } | 
|  |  | 
|  | } |