1 files changed, 42 insertions, 0 deletions
diff --git a/main/src/addins/CSharpBinding/MonoDevelop.CSharp.Diagnostics/RemoveUnnecessaryCast/CSharpRemoveUnnecessaryCastDiagnosticAnalyzer.cs b/main/src/addins/CSharpBinding/MonoDevelop.CSharp.Diagnostics/RemoveUnnecessaryCast/CSharpRemoveUnnecessaryCastDiagnosticAnalyzer.cs
new file mode 100644
index 0000000000..dcb06caf87
--- /dev/null
+++ b/main/src/addins/CSharpBinding/MonoDevelop.CSharp.Diagnostics/RemoveUnnecessaryCast/CSharpRemoveUnnecessaryCastDiagnosticAnalyzer.cs
@@ -0,0 +1,42 @@
+// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
+
+using System;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Threading;
+using Microsoft.CodeAnalysis.CSharp.Extensions;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Microsoft.CodeAnalysis.Diagnostics;
+using Microsoft.CodeAnalysis.Text;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using ICSharpCode.NRefactory6.CSharp;
+
+namespace MonoDevelop.CSharp.Diagnostics.RemoveUnnecessaryCast
+{
+	[DiagnosticAnalyzer(LanguageNames.CSharp)]
+	internal sealed class CSharpRemoveUnnecessaryCastDiagnosticAnalyzer : RemoveUnnecessaryCastDiagnosticAnalyzerBase<SyntaxKind>
+	{
+		private static readonly ImmutableArray<SyntaxKind> s_kindsOfInterest = ImmutableArray.Create(SyntaxKind.CastExpression);
+
+		public override ImmutableArray<SyntaxKind> SyntaxKindsOfInterest
+		{
+			get
+			{
+				return s_kindsOfInterest;
+			}
+		}
+
+		protected override bool IsUnnecessaryCast(SemanticModel model, SyntaxNode node, CancellationToken cancellationToken)
+		{
+			var cast = (CastExpressionSyntax)node;
+			return cast.IsUnnecessaryCast(model, cancellationToken);
+		}
+
+		protected override TextSpan GetDiagnosticSpan(SyntaxNode node)
+		{
+			var cast = (CastExpressionSyntax)node;
+			return TextSpan.FromBounds(cast.OpenParenToken.SpanStart, cast.CloseParenToken.Span.End);
+		}
+	}
+}