GodotError.cs

using System;

class GodotError : Exception
{
    public string Name { get; private set; }
    public GodotError(int errorCode)
    {
        Name = typeof(GodotError).GetEnumName(errorCode);
    }
    public override string ToString()
    {
        return Name;
    }
    public static int Assert(int errorCode)
    {
        if (errorCode != 0)
        {
            throw new GodotError(errorCode);
        }
        return errorCode;
    }
    public static T Assert<T>(object[] errorList)
    {
        Assert((int)errorList[0]);
        return (T)errorList[1];
    }
}