IEnumerable CreateNestedContext(EvaluatorProperty collectionProperty)
{
if(collectionProperty == null) {
EvaluatorContext[] old = contexts;
contexts = new EvaluatorContext[old.Length + 1];
Array.Copy(old, 0, contexts, 1, old.Length);
return contexts[1].GetCollectionContexts(null);
}
EvaluatorContext[] parentContext = contexts;
contexts = new EvaluatorContext[parentContext.Length - collectionProperty.UpDepth + collectionProperty.PropertyPathTokenized.Length];
Array.Copy(parentContext, collectionProperty.UpDepth, contexts, collectionProperty.PropertyPathTokenized.Length, contexts.Length - collectionProperty.PropertyPathTokenized.Length);
int currentContextIndex = collectionProperty.PropertyPathTokenized.Length;
int currentPathIndex = 0;
while(currentContextIndex > 1) {
EvaluatorContext currentContext = contexts[currentContextIndex];
string currentProperty = collectionProperty.PropertyPathTokenized[currentPathIndex];
currentContext = currentContext.GetNestedContext(currentProperty);
if(currentContext == null)
return null;
--currentContextIndex;
++currentPathIndex;
contexts[currentContextIndex] = currentContext;
}
return contexts[1].GetCollectionContexts(collectionProperty.PropertyPathTokenized[collectionProperty.PropertyPathTokenized.Length - 1]);
}
public abstract object GetPropertyValue(object source, EvaluatorProperty propertyPath);
public override object GetPropertyValue(object source, EvaluatorProperty propertyPath)
{
object res = GetPropertyValue(source, propertyPath.PropertyPath, propertyPath.PropertyPathTokenized.Length > 1);
if(res != noResult)
return res;
EvaluatorContext nestedContext = this.GetNestedContext(source, propertyPath.PropertyPathTokenized[0]);
if(nestedContext == null)
return null;
return nestedContext.GetPropertyValue(propertyPath.SubProperty);
}
public object GetPropertyValue(EvaluatorProperty propertyPath)
{
return Descriptor.GetPropertyValue(Source, propertyPath);
}
