/**
* Recursively walk the spec input tree.
*/
private static List <CardinalitySpec> CreateChildren(JObject rawSpec)
{
var children = new List <CardinalitySpec>();
var actualKeys = new HashSet <string>();
foreach (var kv in rawSpec)
{
CardinalitySpec childSpec;
if (kv.Value.Type == JTokenType.Object)
{
childSpec = new CardinalityCompositeSpec(kv.Key, (JObject)kv.Value);
}
else
{
childSpec = new CardinalityLeafSpec(kv.Key, kv.Value);
}
string childCanonicalString = childSpec.GetPathElement().GetCanonicalForm();
if (actualKeys.Contains(childCanonicalString))
{
throw new ArgumentException(nameof(rawSpec),
"Duplicate canonical CardinalityTransform key found : " + childCanonicalString);
}
actualKeys.Add(childCanonicalString);
children.Add(childSpec);
}
return(children);
}
private readonly IReadOnlyList <CardinalitySpec> _computedChildren; // children that are regex matches against the input data
public CardinalityCompositeSpec(string rawKey, JObject spec) :
base(rawKey)
{
var literals = new Dictionary <string, CardinalitySpec>();
var computed = new List <CardinalitySpec>();
_specialChild = null;
// self check
if (GetPathElement().GetType() == typeof(AtPathElement))
{
throw new SpecException("@ CardinalityTransform key, can not have children.");
}
List <CardinalitySpec> children = CreateChildren(spec);
if (children.Count == 0)
{
throw new SpecException("Shift CardinalitySpec format error : CardinalitySpec line with empty {} as value is not valid.");
}
foreach (CardinalitySpec child in children)
{
var childPe = child.GetPathElement();
literals[childPe.RawKey] = child;
if (childPe is LiteralPathElement)
{
literals[childPe.RawKey] = child;
}
// special is it is "@"
else if (childPe is AtPathElement)
{
if (child is CardinalityLeafSpec cls)
{
_specialChild = cls;
}
else
{
throw new SpecException("@ CardinalityTransform key, can not have children.");
}
}
// star
else
{
computed.Add(child);
}
}
// Only the computed children need to be sorted
computed.Sort(computedKeysComparator);
computed.TrimExcess();
_literalChildren = literals;
_computedChildren = computed.AsReadOnly();
}