using System.Reflection;
using System.Runtime.ExceptionServices;

namespace Ariadne.UnitTests
{
    /// <summary>
    /// Builds arcs from a save through their loading constructors, the way a save library does.
    /// </summary>
    public static class LoadedArc
    {
        public static ArcType From<ArcType>(IArcReader reader)
        {
            ConstructorInfo constructor = typeof(ArcType).GetConstructor(
                BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic, binder: null,
                types: new[] { typeof(IArcReader) }, modifiers: null);
            try
            {
                return (ArcType)constructor.Invoke(new object[] { reader });
            }
            catch (TargetInvocationException exception)
            {
                ExceptionDispatchInfo.Capture(exception.InnerException).Throw();
                throw;
            }
        }
    }
}