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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.
// See the LICENSE file in the project root for more information.
using System.Collections.Generic;
using System.Runtime.CompilerServices;
namespace System.Reflection
{
public abstract partial class MemberInfo : ICustomAttributeProvider
{
protected MemberInfo() { }
public abstract MemberTypes MemberType { get; }
public abstract string Name { get; }
public abstract Type DeclaringType { get; }
public abstract Type ReflectedType { get; }
public virtual Module Module
{
get
{
// This check is necessary because for some reason, Type adds a new "Module" property that hides the inherited one instead
// of overriding.
Type type = this as Type;
if (type != null)
return type.Module;
throw NotImplemented.ByDesign;
}
}
public virtual bool HasSameMetadataDefinitionAs(MemberInfo other) { throw NotImplemented.ByDesign; }
public abstract bool IsDefined(Type attributeType, bool inherit);
public abstract object[] GetCustomAttributes(bool inherit);
public abstract object[] GetCustomAttributes(Type attributeType, bool inherit);
public virtual IEnumerable<CustomAttributeData> CustomAttributes => GetCustomAttributesData();
public virtual IList<CustomAttributeData> GetCustomAttributesData() { throw NotImplemented.ByDesign; }
public virtual bool IsCollectible => true;
public virtual int MetadataToken { get { throw new InvalidOperationException(); } }
public override bool Equals(object obj) => base.Equals(obj);
public override int GetHashCode() => base.GetHashCode();
// Force inline as the true/false ternary takes it above ALWAYS_INLINE size even though the asm ends up smaller
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static bool operator ==(MemberInfo left, MemberInfo right)
{
// Test "right" first to allow branch elimination when inlined for null checks (== null)
// so it can become a simple test
if (right is null)
{
// return true/false not the test result https://github.com/dotnet/coreclr/issues/914
return (left is null) ? true : false;
}
// Quick reference equality test prior to calling the virtual Equality
return ReferenceEquals(right, left) ? true : right.Equals(left);
}
public static bool operator !=(MemberInfo left, MemberInfo right) => !(left == right);
}
}
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