public object GetValue(ParameterCollection parameterCollection)
{
for (int i = 0; i < Keys.Length; ++i)
{
if (!parameterCollection.ContainsKey(Keys[i]))
{
return(null);
}
var value = parameterCollection.GetObject(Keys[i]);
// Last key, returns result
if (i == Keys.Length - 1)
{
return(value);
}
// Ohterwise, it should be a container
if (!(value is ParameterCollection))
{
return(null);
}
parameterCollection = (ParameterCollection)value;
}
return(null);
}
public static void RegisterParameter(this ParameterCollection parameterCollection, ParameterKey parameterKey, bool addDependencies = true)
{
var metaData = parameterKey.Metadatas.OfType <ParameterKeyValueMetadata>().FirstOrDefault();
if (metaData == null)
{
throw new ArgumentException("ParameterKey must be declared with metadata", "parameterKey");
}
if (!parameterCollection.ContainsKey(parameterKey))
{
metaData.SetupDefaultValue(parameterCollection, parameterKey, addDependencies);
}
}
private static IEnumerable <ParameterCollection> ContainersInPath(ParameterCollection parameterCollection, IEnumerable <ParameterKey> keys)
{
yield return(parameterCollection);
foreach (var key in keys)
{
if (!parameterCollection.ContainsKey(key))
{
break;
}
var nextContainer = parameterCollection.GetObject(key) as ParameterCollection;
if (nextContainer == null)
{
break;
}
yield return(nextContainer);
parameterCollection = nextContainer;
}
}