File: Declarations\DeclarationModifiers.cs
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Project: src\src\Compilers\CSharp\Portable\Microsoft.CodeAnalysis.CSharp.csproj (Microsoft.CodeAnalysis.CSharp)
// 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;
 
namespace Microsoft.CodeAnalysis.CSharp
{
    [Flags]
    internal enum DeclarationModifiers : uint
    {
        None = 0,
        Abstract = 1 << 0,
        Sealed = 1 << 1,
        Static = 1 << 2,
        New = 1 << 3,
        Public = 1 << 4,
        Protected = 1 << 5,
        Internal = 1 << 6,
        ProtectedInternal = 1 << 7, // the two keywords together are treated as one modifier
        Private = 1 << 8,
        PrivateProtected = 1 << 9, // the two keywords together are treated as one modifier
        ReadOnly = 1 << 10,
        Const = 1 << 11,
        Volatile = 1 << 12,
 
        Extern = 1 << 13,
        Partial = 1 << 14,
        Unsafe = 1 << 15,
        Fixed = 1 << 16,
        Virtual = 1 << 17, // used for method binding
        Override = 1 << 18, // used for method binding
 
        Indexer = 1 << 19, // not a real modifier, but used to record that indexer syntax was used. 
 
        Async = 1 << 20,
        Ref = 1 << 21, // used only for structs
        Required = 1 << 22, // Used only for properties and fields
        Scoped = 1 << 23,
        File = 1 << 24, // used only for types
 
        All = (1 << 25) - 1, // all modifiers
        Unset = 1 << 25, // used when a modifiers value hasn't yet been computed
 
        AccessibilityMask = PrivateProtected | Private | Protected | Internal | ProtectedInternal | Public,
    }
}