spectre.console/src/Spectre.Console/Cli/Internal/CommandBinder.cs

using System;

namespace Spectre.Console.Cli.Internal
{
    internal static class CommandBinder
    {
        public static CommandSettings Bind(CommandTree? tree, Type settingsType, ITypeResolver resolver)
        {
            var lookup = CommandValueResolver.GetParameterValues(tree, resolver);

            // Got a constructor with at least one name corresponding to a settings?
            foreach (var constructor in settingsType.GetConstructors())
            {
                var parameters = constructor.GetParameters();
                if (parameters.Length > 0)
                {
                    foreach (var parameter in parameters)
                    {
                        if (lookup.HasParameterWithName(parameter?.Name))
                        {
                            // Use constructor injection.
                            return CommandConstructorBinder.CreateSettings(lookup, constructor, resolver);
                        }
                    }
                }
            }

            return CommandPropertyBinder.CreateSettings(lookup, settingsType, resolver);
        }
    }
}