// 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.
 
namespace Microsoft.CodeAnalysis.Simplification;
 
// When applied to a SyntaxNode, prevents AbstractImportsAdder from adding imports for this
// node. Applied alongside SymbolAnnotation when a type should be simplified without adding a
// using for the type.
//
// For example, override completion adds void goo() => throw new
// System.NotImplementedException() with a SymbolAnnotation and a DoNotAddImportsAnnotation.
//
// This allows the simplifier to remove the `System.` if `using System` is already in the file
// but prevents the addition of `using System` just for the NotImplementedException. 
//
// This could have been implemented as an additional bit serialized into the `Data` string of
// SymbolAnnotation. However that would require additional substring operations to retrieve
// SymbolAnnotation symbols even in the common case where we don't need to suppress add imports.
// This is therefore implemented as a separate annotation.
internal sealed class DoNotAddImportsAnnotation
{
    public static readonly SyntaxAnnotation Annotation = new(Kind);
    public const string Kind = "DoNotAddImports";
}