public virtual Differences VisitQueryTypeFilter(QueryTypeFilter filter1, QueryTypeFilter filter2){
Differences differences = new Differences(filter1, filter2);
if (filter1 == null || filter2 == null){
if (filter1 != filter2) differences.NumberOfDifferences++; else differences.NumberOfSimilarities++;
return differences;
}
QueryTypeFilter changes = (QueryTypeFilter)filter2.Clone();
QueryTypeFilter deletions = (QueryTypeFilter)filter2.Clone();
QueryTypeFilter insertions = (QueryTypeFilter)filter2.Clone();
// filter1.Constraint;
// filter1.Source;
if (differences.NumberOfDifferences == 0){
differences.Changes = null;
differences.Deletions = null;
differences.Insertions = null;
}else{
differences.Changes = changes;
differences.Deletions = deletions;
differences.Insertions = insertions;
}
return differences;
}
public virtual Node VisitQueryTypeFilter(QueryTypeFilter filter, QueryTypeFilter changes, QueryTypeFilter deletions, QueryTypeFilter insertions){
this.UpdateSourceContext(filter, changes);
if (filter == null) return changes;
if (changes != null){
if (deletions == null || insertions == null)
Debug.Assert(false);
else{
}
}else if (deletions != null)
return null;
return filter;
}
public override Node VisitQueryTypeFilter(QueryTypeFilter qtf) {
if (qtf == null) return null;
qtf.Source = this.VisitExpression(qtf.Source);
if (qtf.Source == null || qtf.Source.Type == null) return null;
Cardinality card = this.typeSystem.GetCardinality(qtf.Source, this.TypeViewer);
if (card != Cardinality.OneOrMore && card != Cardinality.ZeroOrMore) {
this.HandleError(qtf.Source, Error.QueryNotStream);
return null;
}
qtf.Constraint = this.VisitTypeReference(qtf.Constraint);
if (qtf.Constraint == null) {
this.HandleError(qtf, Error.QueryBadTypeFilter);
return null;
}
if (qtf.Type == null) return null;
return qtf;
}
public virtual Node VisitQueryTypeFilter(QueryTypeFilter filter){
if (filter == null) return null;
filter.Source = this.VisitExpression(filter.Source);
return filter;
}
public virtual void VisitQueryTypeFilter(QueryTypeFilter filter){
if (filter == null) return;
this.VisitExpression(filter.Source);
}
public override Node VisitQueryTypeFilter( QueryTypeFilter qtf ){
if (qtf == null) return null;
qtf.Source = this.VisitExpression(qtf.Source);
return qtf;
}
public override Node VisitQueryTypeFilter(QueryTypeFilter filter){
if (filter == null) return null;
return base.VisitQueryTypeFilter((QueryTypeFilter)filter.Clone());
}
public virtual Node VisitQueryTypeFilter(QueryTypeFilter filter1, QueryTypeFilter filter2){
if (filter1 == null) return null;
if (filter2 == null)
filter1.Source = this.VisitExpression(filter1.Source, null);
else
filter1.Source = this.VisitExpression(filter1.Source, filter2.Source);
return filter1;
}
public override Node VisitQueryTypeFilter( QueryTypeFilter qtf ) {
base.VisitQueryTypeFilter(qtf);
return this.Compose(qtf, this.GetComposer(qtf.Source));
}
public override Node VisitQueryTypeFilter(QueryTypeFilter qtf)
{
base.VisitQueryTypeFilter(qtf);
return(this.Compose(qtf, this.GetComposer(qtf.Source)));
}
public EventingVisitor(Action<QueryTypeFilter> visitQueryTypeFilter) { VisitedQueryTypeFilter += visitQueryTypeFilter; } public event Action<QueryTypeFilter> VisitedQueryTypeFilter; public override Node VisitQueryTypeFilter(QueryTypeFilter filter) { if (VisitedQueryTypeFilter != null) VisitedQueryTypeFilter(filter); return base.VisitQueryTypeFilter(filter); }
