internal code change

PiperOrigin-RevId: 301405619
Change-Id: Ic11eb5922c8ff27675afda3d6b69d10e4dcbae79

tensorflow/lite/experimental/swift/Sources/CoreMlDelegate.swift

@@ -0,0 +1,50 @@
+// Copyright 2020 Google Inc. 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 TensorFlowLiteC
+
+/// A delegate that uses the `Core ML` framework for performing TensorFlow Lite graph operations.
+///
+/// - Important: This is an experimental interface that is subject to change.
+public final class CoreMLDelegate: Delegate {
+  /// The configuration options for the `CoreMLDelegate`.
+  public let options: Options
+
+  // Conformance to the `Delegate` protocol.
+  public private(set) var cDelegate: CDelegate
+
+  /// Creates a new instance configured with the given `options`.
+  ///
+  /// - Parameters:
+  ///   - options: Configurations for the delegate. The default is a new instance of
+  ///       `CoreMLDelegate.Options` with the default configuration values.
+  public init(options: Options = Options()) {
+    self.options = options
+    var delegateOptions = TfLiteCoreMlDelegateOptions()
+    cDelegate = TfLiteCoreMlDelegateCreate(&delegateOptions)
+  }
+
+  deinit {
+    TfLiteCoreMlDelegateDelete(cDelegate)
+  }
+}
+
+extension CoreMLDelegate {
+  /// Options for configuring the `CoreMLDelegate`.
+  // TODO(b/143931022): Add preferred device support.
+  public struct Options: Equatable, Hashable {
+    /// Creates a new instance with the default values.
+    public init() {}
+  }
+}