public ThenItExpression <T> If(Predicate <IContext> predicate)
{
return(new InstanceExpression <T>(i =>
{
var theCase = new InstanceCase
{
Instance = i,
Predicate = predicate
};
_parent._cases.Add(theCase);
}));
}
protected override object build(Type pluginType, BuildSession session)
{
// Find the first InstanceCase that matches the BuildSession/IContext
InstanceCase instanceCase = _cases.Find(c => c.Predicate(session));
// Use the Instance from the InstanceCase if it exists,
// otherwise, use the "default"
Instance instance = instanceCase == null ? _default : instanceCase.Instance;
// delegate to the chosen Instance
return(instance.Build(pluginType, session));
}