Blog/static/scripts/building-a-gamestate-with-zenject-in-unity/ExpressionExtensions.cs

// Copyright © 2023 Steffen Cole Blake
// 
// Permission is hereby granted, free of charge, to any person obtaining
//  a copy of this software and associated documentation files (the “Software”),
//  to deal in the Software without restriction, including without limitation 
// the rights to use, copy, modify, merge, publish, distribute, sublicense, 
// and/or sell copies of the Software, and to permit persons to whom the Software
//  is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all
//  copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
//  INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 
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// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// 

using System.Linq.Expressions;
using System;

public static class ExpressionExtensions
{
    public static string GetFullMemberName(this LambdaExpression memberSelector)
    {
        var currentExpression = memberSelector.Body;
        if (currentExpression is not MemberExpression memberExpression)
        {
            throw new Exception("Member Expressions only");
        }

        var name = memberExpression.Member.Name;

        while (memberExpression?.Expression is not null and MemberExpression next)
        {
            memberExpression = next;
            name = memberExpression.Member.Name + "." + name;
        }

        return name;
    }
}