Moving pinning attributes and the pinned analyzer

src/D2L.CodeStyle.Annotations/Pinning/MustBeDeserializableAttribute.cs

@@ -0,0 +1,10 @@
+using System;
+
+namespace D2L.CodeStyle.Annotations.Pinning {
+	/// <summary>
+	/// Represents a parameter in the call chain of serialization in order to enforce pinning or otherwise set limitations on serialized types
+	/// </summary>
+	[AttributeUsage( AttributeTargets.Parameter | AttributeTargets.GenericParameter, AllowMultiple = false, Inherited = false )]
+	public sealed class MustBeDeserializableAttribute : Attribute {
+	}
+}

src/D2L.CodeStyle.Annotations/Pinning/MustBePinnedAttribute.cs

@@ -0,0 +1,10 @@
+using System;
+
+namespace D2L.CodeStyle.Annotations.Pinning {
+	/// <summary>
+	/// Represents a parameter in a dangerous call chain (e.g. serialization using the assembly qualified name) that must be pinned
+	/// </summary>
+	[AttributeUsage( AttributeTargets.Parameter | AttributeTargets.GenericParameter, AllowMultiple = false, Inherited = false )]
+	public sealed class MustBePinnedAttribute : Attribute {
+	}
+}

src/D2L.CodeStyle.Annotations/Pinning/PinnedAttribute.cs

@@ -0,0 +1,22 @@
+using System;
+
+namespace D2L.CodeStyle.Annotations.Pinning {
+	/// <summary>
+	/// The type should not be moved from its assembly due to risk of deserialization based on assembly qualified name or other dangerous call chains
+	/// </summary>
+	[AttributeUsage( AttributeTargets.Class
+		| AttributeTargets.Struct
+		| AttributeTargets.Interface
+		, AllowMultiple = false, Inherited = false )]
+	public sealed class PinnedAttribute : Attribute {
+		public string FullyQualifiedName { get; }
+		public string Assembly { get; }
+		public bool PinnedRecursively { get; }
+
+		public PinnedAttribute( string fullyQualifiedName, string assembly, bool pinnedRecursively = false ) {
+			FullyQualifiedName = fullyQualifiedName;
+			Assembly = assembly;
+			PinnedRecursively = pinnedRecursively;
+		}
+	}
+}