1 files changed, 58 insertions, 0 deletions
diff --git a/src/mscorlib/src/System/Runtime/InteropServices/WindowsRuntime/IMap.cs b/src/mscorlib/src/System/Runtime/InteropServices/WindowsRuntime/IMap.cs
new file mode 100644
index 0000000000..72cf85cd3e
--- /dev/null
+++ b/src/mscorlib/src/System/Runtime/InteropServices/WindowsRuntime/IMap.cs
@@ -0,0 +1,58 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+//
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.Contracts;
+
+// Windows.Foundation.Collections.IMap`2, IMapView`2, and IKeyValuePair`2 cannot be referenced from
+// managed code because they're hidden by the metadata adapter. We redeclare the interfaces manually
+// to be able to talk to native WinRT objects.
+namespace System.Runtime.InteropServices.WindowsRuntime
+{
+    [ComImport]
+    [Guid("3c2925fe-8519-45c1-aa79-197b6718c1c1")]
+    [WindowsRuntimeImport]
+    internal interface IMap<K, V> : IIterable<IKeyValuePair<K, V>>
+    {
+        [Pure]
+        V Lookup(K key);
+        [Pure]
+        uint Size { get; }
+        [Pure]
+        bool HasKey(K key);
+        [Pure]
+        IReadOnlyDictionary<K, V> GetView();  // Really an IMapView<K, V>
+        bool Insert(K key, V value);
+        void Remove(K key);
+        void Clear();
+    }
+
+    [ComImport]
+    [Guid("e480ce40-a338-4ada-adcf-272272e48cb9")]
+    [WindowsRuntimeImport]
+    internal interface IMapView<K, V> : IIterable<IKeyValuePair<K, V>>
+    {
+        [Pure]
+        V Lookup(K key);
+        [Pure]
+        uint Size { get; }
+        [Pure]
+        bool HasKey(K key);
+        [Pure]
+        void Split(out IMapView<K, V> first, out IMapView<K, V> second);
+    }
+
+    [ComImport]
+    [Guid("02b51929-c1c4-4a7e-8940-0312b5c18500")]
+    [WindowsRuntimeImport]
+    internal interface IKeyValuePair<K, V>
+    {
+        [Pure]
+        K Key { get; }
+        [Pure]
+        V Value { get; }
+    }
+}