Stop using Internal.emptyData in source

Author: cburrows

Sources/SwiftProtobuf/AnyMessageStorage.swift

@@ -100,11 +100,11 @@ internal class AnyMessageStorage {
         do {
           return try message.serializedData(partial: true)
         } catch {
-          return Internal.emptyData
+          return Data()
         }
       case .contentJSON(let contentJSON, let options):
         guard let messageType = Google_Protobuf_Any.messageType(forTypeURL: _typeURL) else {
-          return Internal.emptyData
+          return Data()
         }
         do {
           let m = try unpack(contentJSON: contentJSON,
@@ -113,7 +113,7 @@ internal class AnyMessageStorage {
                              as: messageType)
           return try m.serializedData(partial: true)
         } catch {
-          return Internal.emptyData
+          return Data()
         }
       }
     }
@@ -135,7 +135,7 @@ internal class AnyMessageStorage {
     // parsed JSON with the @type removed and the decoding options.
     case contentJSON(Data, JSONDecodingOptions)
   }
-  var state: InternalState = .binary(Internal.emptyData)
+  var state: InternalState = .binary(Data())
 
   static let defaultInstance = AnyMessageStorage()
 
@@ -445,7 +445,7 @@ extension AnyMessageStorage {
     try decoder.scanner.skipRequiredObjectStart()
     // Reset state
     _typeURL = String()
-    state = .binary(Internal.emptyData)
+    state = .binary(Data())
     if decoder.scanner.skipOptionalObjectEnd() {
       return
     }

Sources/SwiftProtobuf/FieldTypes.swift

@@ -393,7 +393,7 @@ public struct ProtobufString: FieldType, MapKeyType, MapValueType {
 ///
 public struct ProtobufBytes: FieldType, MapValueType {
     public typealias BaseType = Data
-    public static var proto3DefaultValue: Data {return Internal.emptyData}
+    public static var proto3DefaultValue: Data {return Data()}
     public static func decodeSingular<D: Decoder>(value: inout BaseType?, from decoder: inout D) throws {
         try decoder.decodeSingularBytesField(value: &value)
     }

Sources/SwiftProtobuf/JSONDecoder.swift

@@ -434,7 +434,7 @@ internal struct JSONDecoder: Decoder {
 
   mutating func decodeSingularBytesField(value: inout Data) throws {
     if scanner.skipOptionalNull() {
-      value = Internal.emptyData
+      value = Data()
       return
     }
     value = try scanner.nextBytesValue()

Sources/SwiftProtobuf/TextFormatEncodingVisitor.swift

@@ -156,7 +156,7 @@ internal struct TextFormatEncodingVisitor: Visitor {
               encoder.endRegularField()
           case .lengthDelimited:
               encoder.emitFieldNumber(number: tag.fieldNumber)
-              var bytes = Internal.emptyData
+              var bytes = Data()
               try decoder.decodeSingularBytesField(value: &bytes)
               bytes.withUnsafeBytes { (body: UnsafeRawBufferPointer) -> () in
                   if let baseAddress = body.baseAddress, body.count > 0 {

Sources/SwiftProtobuf/UnknownStorage.swift

@@ -24,7 +24,7 @@ import Foundation
 public struct UnknownStorage: Equatable {
   /// The raw protocol buffer binary-encoded bytes that represent the unknown
   /// fields of a decoded message.
-  public private(set) var data = Internal.emptyData
+  public private(set) var data = Data()
 
 #if !swift(>=4.1)
   public static func ==(lhs: UnknownStorage, rhs: UnknownStorage) -> Bool {

Sources/protoc-gen-swift/Descriptor+Extensions.swift

@@ -211,7 +211,7 @@ extension FieldDescriptor {
     switch type {
     case .bool: return "false"
     case .string: return "String()"
-    case .bytes: return "\(SwiftProtobufInfo.name).Internal.emptyData"
+    case .bytes: return "Data()"
     case .group, .message:
       return namer.fullName(message: messageType) + "()"
     case .enum:

Sources/protoc-gen-swift/StringUtils.swift

@@ -62,7 +62,7 @@ func trimWhitespace(_ s: String) -> String {
 ///  \n\r\t\\\'\" and three-digit octal escapes but nothing else.
 func escapedToDataLiteral(_ s: String) -> String {
   if s.isEmpty {
-    return "\(SwiftProtobufInfo.name).Internal.emptyData"
+    return "Data()"
   }
   var out = "Data(["
   var separator = ""