Imported Upstream version 5.0.0.42

Former-commit-id: fd56571888259555122d8a0f58c68838229cea2b

external/linker/cecil/Mono.Cecil/ICustomAttributeProvider.cs

@@ -0,0 +1,42 @@
+//
+// Author:
+//   Jb Evain (jbevain@gmail.com)
+//
+// Copyright (c) 2008 - 2015 Jb Evain
+// Copyright (c) 2008 - 2011 Novell, Inc.
+//
+// Licensed under the MIT/X11 license.
+//
+
+using System;
+using Mono.Collections.Generic;
+
+namespace Mono.Cecil {
+
+	public interface ICustomAttributeProvider : IMetadataTokenProvider {
+
+		Collection<CustomAttribute> CustomAttributes { get; }
+
+		bool HasCustomAttributes { get; }
+	}
+
+	static partial class Mixin {
+
+		public static bool GetHasCustomAttributes (
+			this ICustomAttributeProvider self,
+			ModuleDefinition module)
+		{
+			return module.HasImage () && module.Read (self, (provider, reader) => reader.HasCustomAttributes (provider));
+		}
+
+		public static Collection<CustomAttribute> GetCustomAttributes (
+			this ICustomAttributeProvider self,
+			ref Collection<CustomAttribute> variable,
+			ModuleDefinition module)
+		{
+			return module.HasImage ()
+				? module.Read (ref variable, self, (provider, reader) => reader.ReadCustomAttributes (provider))
+				: variable = new Collection<CustomAttribute>();
+		}
+	}
+}