/// <summary>
/// Returns an ImmutableSentenceFormModel with the same contents as the given SentenceFormModel.
/// May not actually create a copy if the input is immutable.
/// </summary>
/// <param name="other"></param>
/// <returns></returns>
public static ImmutableSentenceFormModel CopyOf(ISentenceFormModel other)
{
var immutableSentenceDomainModel = other as ImmutableSentenceDomainModel;
if (immutableSentenceDomainModel != null)
return CopyOf(immutableSentenceDomainModel.FormModel);
var immutableSentenceFormModel = other as ImmutableSentenceFormModel;
if (immutableSentenceFormModel != null)
return immutableSentenceFormModel;
var rulesByForm = new MultiDictionary<ISentenceForm, Implication>(false);
var trueSentencesByForm = new MultiDictionary<ISentenceForm, Fact>(false);
foreach (ISentenceForm form in other.SentenceForms)
{
rulesByForm[form] = other.GetRules(form);
trueSentencesByForm[form] = other.GetSentencesListedAsTrue(form);
}
var dependencyGraph = new MultiDictionary<ISentenceForm, ISentenceForm>(true);
foreach (KeyValuePair<ISentenceForm, ICollection<ISentenceForm>> kv in other.DependencyGraph)
dependencyGraph[kv.Key] = kv.Value;
return new ImmutableSentenceFormModel(ImmutableList.CreateRange(other.Description),
ImmutableHashSet.CreateRange(other.SentenceForms),
ImmutableHashSet.CreateRange(other.ConstantSentenceForms),
ImmutableHashSet.CreateRange(other.IndependentSentenceForms),
dependencyGraph,
rulesByForm,
trueSentencesByForm);
}
