public void Add(string term, TermDefinition definition) => TermDefinitions[term] = definition;
private async Task _createTermDefinition(Context activeContext, JObject localContext, string term,
Dictionary <string, bool> defined)
{
if (defined.ContainsKey(term))
{
if (defined[term])
{
return;
}
else
{
throw new JsonLDException("cyclic IRI mapping");
}
}
defined[term] = false;
if (term.StartsWith("@"))
{
throw new JsonLDException("keyword redefinition");
}
activeContext.Remove(term);
var value = localContext[term];
if (value == null || value.Type == JTokenType.Null ||
value.Type == JTokenType.Object && ((JObject)value)["@id"]?.Type == JTokenType.Null)
{
defined[term] = true;
activeContext.Add(term, null);
return;
}
if (value.Type == JTokenType.String)
{
var data = value.ToObject <string>();
value = new JObject {
["@id"] = data
};
}
else if (value.Type != JTokenType.Object)
{
throw new JsonLDException("invalid term definition");
}
var definition = new TermDefinition();
if (value["@type"] != null)
{
var type = value["@type"];
if (type.Type != JTokenType.String)
{
throw new JsonLDException("invalid type mapping");
}
var typeString = await _expandIri(activeContext, type.ToObject <string>(), false, true,
localContext, defined);
if (typeString != "@id" && typeString != "@vocab" && !Uri.IsWellFormedUriString(typeString, UriKind.Absolute))
{
throw new JsonLDException("invalid type mapping");
}
definition.TypeMapping = typeString;
}
if (value["@reverse"] != null)
{
if (value["@id"] != null)
{
throw new JsonLDException("invalid reverse property");
}
if (value["@reverse"].Type != JTokenType.String)
{
throw new JsonLDException("invalid IRI mapping");
}
definition.IriMapping = await _expandIri(activeContext, value["@reverse"].ToObject <string>(), false,
true, localContext, defined);
if (!definition.IriMapping.Contains(":"))
{
throw new JsonLDException("invalid IRI mapping");
}
definition.ReverseProperty = true;
activeContext.Add(term, definition);
defined[term] = true;
return;
}
definition.ReverseProperty = false; // not needed, but to be sure(TM)
if (value["@id"] != null && value["@id"].ToObject <string>() != term)
{
if (value["@id"].Type != JTokenType.String)
{
throw new JsonLDException("invalid IRI mapping");
}
definition.IriMapping = await _expandIri(activeContext, value["@id"].ToObject <string>(), false, true,
localContext, defined);
// todo: 13.2
}
else if (term.Contains(":"))
{
var spl = term.Split(new [] { ':' }, 2);
var prefix = spl[0];
var suffix = spl[1];
if (!suffix.StartsWith("//") && localContext[prefix] != null)
{
await _createTermDefinition(activeContext, localContext, prefix, defined);
}
if (activeContext.Has(prefix))
{
definition.IriMapping = activeContext[prefix].IriMapping + suffix;
}
else
{
definition.IriMapping = term;
}
}
else if (activeContext.VocabularyMapping != null)
{
definition.IriMapping = activeContext.VocabularyMapping + term;
}
else
{
throw new JsonLDException("invalid IRI mapping");
}
if (value["@container"] != null)
{
var container = value["@container"].ToObject <string>();
if (!_containerValues.Contains(container))
{
throw new JsonLDException("invalid container mapping");
}
definition.ContainerMapping = container;
}
if (value["@language"] != null && value["@type"] == null)
{
var language = value["@language"].ToObject <string>();
if (value["@language"].Type != JTokenType.Null && value["@language"].Type != JTokenType.String)
{
throw new JsonLDException("invalid language mapping");
}
definition.LanguageMapping = language.ToLower();
}
activeContext.Add(term, definition);
defined[term] = true;
}