private bool IsBlocked(FeatureStruct realizationalFS, FeatureStruct syntacticFS, HashSet <Tuple <FeatureStruct, FeatureStruct> > visited)
{
Tuple <FeatureStruct, FeatureStruct> pair = Tuple.Create(realizationalFS, syntacticFS);
if (visited.Contains(pair))
{
return(true);
}
visited.Add(pair);
foreach (Feature f in realizationalFS.Features)
{
if (!syntacticFS.ContainsFeature(f))
{
return(false);
}
var cf = f as ComplexFeature;
if (cf != null)
{
FeatureStruct realFS = realizationalFS.GetValue(cf);
FeatureStruct synFS = syntacticFS.GetValue(cf);
if (!IsBlocked(realFS, synFS, visited))
{
return(false);
}
}
}
return(true);
}
private bool ContainsFeature(FeatureStruct fs, Feature feature, ISet <FeatureStruct> visited)
{
if (visited.Contains(fs))
{
return(false);
}
if (fs.ContainsFeature(feature))
{
return(true);
}
if (fs.Features.OfType <ComplexFeature>().Any(cf => ContainsFeature(fs.GetValue(cf), feature, visited)))
{
return(true);
}
return(false);
}
private bool ContainsFeature(FeatureStruct fs, Feature feature, ISet<FeatureStruct> visited)
{
if (visited.Contains(fs))
return false;
if (fs.ContainsFeature(feature))
return true;
if (fs.Features.OfType<ComplexFeature>().Any(cf => ContainsFeature(fs.GetValue(cf), feature, visited)))
return true;
return false;
}