Move part of RuntimeHelpers to shared partition (dotnet/coreclr#23130)

* Move part of RuntimeHelpers to shared partition * Remove FormatterServices.cs Signed-off-by: dotnet-bot <dotnet-bot@microsoft.com>
dotnet · Mar 10, 2019 · a5414fc · a5414fc
1 parent 106009b
commit a5414fc
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diff --git a/src/Common/src/CoreLib/System.Private.CoreLib.Shared.projitems b/src/Common/src/CoreLib/System.Private.CoreLib.Shared.projitems
@@ -575,6 +575,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\CompilerServices\ReferenceAssemblyAttribute.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\CompilerServices\RuntimeCompatibilityAttribute.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\CompilerServices\RuntimeFeature.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\CompilerServices\RuntimeHelpers.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\CompilerServices\RuntimeWrappedException.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\CompilerServices\SpecialNameAttribute.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\CompilerServices\StateMachineAttribute.cs" />

diff --git a/src/Common/src/CoreLib/System/Runtime/CompilerServices/RuntimeHelpers.cs b/src/Common/src/CoreLib/System/Runtime/CompilerServices/RuntimeHelpers.cs
@@ -0,0 +1,66 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Runtime.Serialization;
+
+namespace System.Runtime.CompilerServices
+{
+    public static partial class RuntimeHelpers
+    {
+        public delegate void TryCode(object userData);
+
+        public delegate void CleanupCode(object userData, bool exceptionThrown);
+
+        /// <summary>
+        /// GetSubArray helper method for the compiler to slice an array using a range.
+        /// </summary>
+        public static T[] GetSubArray<T>(T[] array, Range range)
+        {
+            Type elementType = array.GetType().GetElementType();
+            Span<T> source = array.AsSpan(range);
+
+            if (elementType.IsValueType)
+            {
+                return source.ToArray();
+            }
+            else
+            {
+                T[] newArray = (T[])Array.CreateInstance(elementType, source.Length);
+                source.CopyTo(newArray);
+                return newArray;
+            }
+        }
+
+        public static object GetUninitializedObject(Type type)
+        {
+            if (type is null)
+            {
+                throw new ArgumentNullException(nameof(type), SR.ArgumentNull_Type);
+            }
+
+            if (!type.IsRuntimeImplemented())
+            {
+                throw new SerializationException(SR.Format(SR.Serialization_InvalidType, type.ToString()));
+            }
+
+            return GetUninitializedObjectInternal(type);
+        }
+
+        public static void PrepareContractedDelegate(Delegate d)
+        {
+        }
+
+        public static void ProbeForSufficientStack()
+        {
+        }
+
+        public static void PrepareConstrainedRegions()
+        {
+        }
+
+        public static void PrepareConstrainedRegionsNoOP()
+        {
+        }
+    }
+}