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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using Internal.TypeSystem;
namespace Internal.Pgo
{
public struct TypeSystemEntityOrUnknown : IEquatable<TypeSystemEntityOrUnknown>
{
public TypeSystemEntityOrUnknown(int unknownIndex)
{
_data = unknownIndex;
}
public TypeSystemEntityOrUnknown(TypeDesc type)
{
_data = type;
}
public TypeSystemEntityOrUnknown(MethodDesc method)
{
_data = method;
}
private readonly object _data;
public TypeDesc AsType => _data as TypeDesc;
public MethodDesc AsMethod => _data as MethodDesc;
public FieldDesc AsField => _data as FieldDesc;
public int AsUnknown => (!(_data is int)) || _data == null ? 0 : (int)_data;
public bool IsNull => _data == null;
public bool IsUnknown => _data is int;
public bool Equals(TypeSystemEntityOrUnknown other)
{
if ((_data is int) && (other._data is int))
{
return other.AsUnknown == AsUnknown;
}
else
{
return ReferenceEquals(_data, other._data);
}
}
public override int GetHashCode() => _data?.GetHashCode() ?? 0;
public override bool Equals(object obj) => obj is TypeSystemEntityOrUnknown other && other.Equals(this);
public override string ToString()
{
if (_data == null)
{
return "null";
}
if ((_data is int))
{
return $"UnknownType({(int)_data})";
}
return _data.ToString();
}
}
}
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