public bool TryGet <TArguments, T>(TArguments arguments, ContextPredicate <TArguments, T> predicate, out T value)
{
if (typeof(TArguments).IsClass && EqualityComparer <TArguments> .Default.Equals(arguments, default))
{
throw new ArgumentNullException(nameof(arguments));
}
if (predicate == null)
{
throw new ArgumentNullException(nameof(predicate));
}
return(OnTryGet(arguments, predicate, out value));
}
protected override bool OnTryGet <TArguments>(TArguments arguments, ContextPredicate <TArguments, object> predicate, out object value)
{
foreach (KeyValuePair <Type, List <object> > pair in m_values)
{
for (int i = 0; i < pair.Value.Count; i++)
{
value = pair.Value[i];
if (predicate(arguments, value))
{
return(true);
}
}
}
value = default;
return(false);
}
protected override bool OnTryGet <TArguments, T>(TArguments arguments, ContextPredicate <TArguments, T> predicate, out T value)
{
Type type = typeof(T);
if (m_values.TryGetValue(type, out List <object> values))
{
for (int i = 0; i < values.Count; i++)
{
value = (T)values[i];
if (predicate(arguments, value))
{
return(true);
}
}
}
foreach (KeyValuePair <Type, List <object> > pair in m_values)
{
if (type.IsAssignableFrom(pair.Key))
{
for (int i = 0; i < pair.Value.Count; i++)
{
value = (T)pair.Value[i];
if (predicate(arguments, value))
{
return(true);
}
}
}
}
value = default;
return(false);
}
public object Get <TArguments>(TArguments arguments, ContextPredicate <TArguments, object> predicate)
{
return(TryGet(arguments, predicate, out object value) ? value : throw new ContextValueNotFoundByArgumentsException(arguments));
}
protected abstract bool OnTryGet <TArguments>(TArguments arguments, ContextPredicate <TArguments, object> predicate, out object value);
protected abstract bool OnTryGet <TArguments, T>(TArguments arguments, ContextPredicate <TArguments, T> predicate, out T value);
