private string TryFindUri(NTriplesPrefixReference reference)
{
var file = (INTriplesFile)this.myElement.GetContainingFile();
if (file == null)
{
throw new FormatException("The element has no file assigned.");
}
var name = reference.GetName();
if (!string.IsNullOrEmpty(name))
{
// Looking for declarations of the same name
var cache = this.myElement.GetSolution().GetComponent<NTriplesCache>();
var uris = cache.GetPrefixDeclarationSymbols(name).Select(s => s.Uri).Distinct().ToArray();
if (uris.Length == 0)
{
return null;
}
if (uris.Length == 1)
{
return uris[0];
}
// narrowing the search using local names
var prefixesWithSameName =
new RecursiveElementCollector<IPrefixName>(p => p.GetText() == name).ProcessElement(file).GetResults();
var localNamesInThePrefix =
prefixesWithSameName.Select(p => ((IUriIdentifier)p.Parent).GetLocalName())
.Distinct()
.Where(n => !string.IsNullOrEmpty(n))
.ToArray();
if (localNamesInThePrefix.Length == 0)
{
return uris[0];
}
var bestUri = uris[0];
int bestMetric = 0;
foreach (var uri in uris)
{
var metric =
cache.GetAllUriIdentifiersInNamespace(uri)
.Select(s => s.LocalName)
.Intersect(localNamesInThePrefix)
.Count();
if (metric > bestMetric)
{
bestMetric = metric;
bestUri = uri;
}
}
return bestUri;
}
return null;
}
public CreateNTriplesPrefixTarget(NTriplesPrefixReference reference)
{
this.myElement = reference.GetTreeNode();
string name = reference.GetName();
var uri = this.TryFindUri(reference);
this.myDeclaration =
NTriplesElementFactory.GetInstance(this.myElement.GetPsiModule()).CreatePrefixDeclarationSentence(name, uri);
this.Anchor = this.FindAnchor();
}