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C#

//-----------------------------------------------------------------------
// <copyright file="FieldInfoExtensions.cs" company="Sirenix IVS">
// Copyright (c) 2018 Sirenix IVS
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// </copyright>
//-----------------------------------------------------------------------
namespace VRC.Udon.Serialization.OdinSerializer.Utilities
{
using System;
using System.Reflection;
/// <summary>
/// FieldInfo method extensions.
/// </summary>
public static class FieldInfoExtensions
{
/// <summary>
/// Determines whether the specified field is an alias.
/// </summary>
/// <param name="fieldInfo">The field to check.</param>
/// <returns>
/// <c>true</c> if the specified field is an alias; otherwise, <c>false</c>.
/// </returns>
public static bool IsAliasField(this FieldInfo fieldInfo)
{
return fieldInfo is MemberAliasFieldInfo;
}
/// <summary>
/// Returns the original, backing field of an alias field if the field is an alias.
/// </summary>
/// <param name="fieldInfo">The field to check.</param>
/// /// <param name="throwOnNotAliased">if set to <c>true</c> an exception will be thrown if the field is not aliased.</param>
/// <returns></returns>
/// <exception cref="System.ArgumentException">The field was not aliased; this only occurs if throwOnNotAliased is true.</exception>
public static FieldInfo DeAliasField(this FieldInfo fieldInfo, bool throwOnNotAliased = false)
{
MemberAliasFieldInfo aliasFieldInfo = fieldInfo as MemberAliasFieldInfo;
if (aliasFieldInfo != null)
{
while (aliasFieldInfo.AliasedField is MemberAliasFieldInfo)
{
aliasFieldInfo = aliasFieldInfo.AliasedField as MemberAliasFieldInfo;
}
return aliasFieldInfo.AliasedField;
}
if (throwOnNotAliased)
{
throw new ArgumentException("The field " + fieldInfo.GetNiceName() + " was not aliased.");
}
return fieldInfo;
}
}
}