/// <summary>
/// Evaluates the items in the expression and assigns them to the collection using the builder
/// </summary>
/// <param name="expression">the expression to evaluate</param>
/// <param name="builder">builder used to build the collection</param>
/// <param name="itemType">the type of the collection's elements</param>
/// <param name="deserializer">deserializer instance to deserialize items</param>
/// <returns>evaluated collection object</returns>
protected virtual object EvaluateItems(ArrayExpression expression, ICollectionBuilder builder, Type itemType, IDeserializerHandler deserializer)
{
object result = null;
bool constructedEventSent = false;
try
{
result = builder.GetReference();
expression.OnObjectConstructed(result);
constructedEventSent = true;
}
catch
{
// this might fail if the builder's not ready
}
foreach (Expression item in expression.Items)
{
item.ResultType = itemType;
object itemResult = deserializer.Evaluate(item);
builder.Add(itemResult);
}
result = builder.GetResult();
if (!constructedEventSent)
{
expression.OnObjectConstructed(result);
}
return(result);
}