public bool Add(Trait trait)
{
if (trait == null)
{
throw new ArgumentException("trait is null");
}
if (trait.Definition == null)
{
throw new ArgumentException("trait definition is null");
}
if (_traits.Any(x => x.Equals(trait)))
{
throw new InvalidOperationException("trait named '" + trait.Definition.Name + "' already exists");
}
var evaluationManager = new EvaluationManager(trait.Definition, _traits);
if (!evaluationManager.Evaluate())
{
return(false);
}
_traits.Add(trait);
return(true);
}
public bool Evaluate(EvaluationManager manager, IReadOnlyCollection <Trait> traits)
{
return(_requirements.Aggregate(false, (current, requirement) => current || requirement.Evaluate(manager, traits)));
}
public bool Evaluate(EvaluationManager manager, IReadOnlyCollection <Trait> traits)
{
var targetTrait = traits.FirstOrDefault(x => x.Definition.Name == Definition.Name);
return(targetTrait != null && Compare(targetTrait));
}