/// <summary>
/// Returns all items with a mapper returning an item deriving from <typeparamref name="T" />
/// </summary>
/// <typeparam name="T">The base type to look for</typeparam>
/// <returns>A list of items that derives from <typeparamref name="T" /></returns>
public IEnumerable <T> InvokeDerivedMappers <T>()
{
return(Flat
.Where(n => n.Matched)
.Where(n => n != this)
.Where(
n =>
n.Token.GetType().IsConstructedGenericType
&&
n.Token.GetType().GetGenericTypeDefinition() == typeof(BNF.Mapper <>)
&&
typeof(T).IsAssignableFrom(n.Token.GetType().GetGenericArguments().First())
)
.Select(
n => {
try
{
return (T)n.Token
.GetType()
.GetMethod(nameof(BNF.Mapper <T> .InvokeMatcher))
.Invoke(n.Token, new object[] { n });
}
catch (System.Reflection.TargetInvocationException tex)
{
// As we use reflection, unwrap the exception here
throw tex.InnerException;
}
}
));
}