public IEnumerable<FragmentSpread> GetFragmentSpreads(SelectionSet node)
{
var spreads = new List<FragmentSpread>();
var setsToVisit = new Stack<SelectionSet>(new[] {node});
while (setsToVisit.Any())
{
var set = setsToVisit.Pop();
set.Selections.Apply(selection =>
{
if (selection is FragmentSpread)
{
spreads.Add((FragmentSpread)selection);
}
else
{
var hasSet = selection as IHaveSelectionSet;
if (hasSet?.SelectionSet != null)
{
setsToVisit.Push(hasSet.SelectionSet);
}
}
});
}
return spreads;
}
public SelectionSet Merge(SelectionSet otherSelection)
{
var newSelection = SelectionsList.Union(otherSelection.SelectionsList).ToList();
return(new SelectionSet(newSelection));
}
protected bool Equals(SelectionSet selectionSet)
{
return(false);
}
public Dictionary<string, Fields> CollectFields(
ExecutionContext context,
IGraphType specificType,
SelectionSet selectionSet,
Dictionary<string, Fields> fields,
List<string> visitedFragmentNames)
{
if (fields == null)
{
fields = new Dictionary<string, Fields>();
}
selectionSet.Selections.Apply(selection =>
{
if (selection is Field)
{
var field = (Field)selection;
if (!ShouldIncludeNode(context, field.Directives))
{
return;
}
var name = field.Alias ?? field.Name;
if (!fields.ContainsKey(name))
{
fields[name] = new Fields();
}
fields[name].Add(field);
}
else if (selection is FragmentSpread)
{
var spread = (FragmentSpread)selection;
if (visitedFragmentNames.Contains(spread.Name)
|| !ShouldIncludeNode(context, spread.Directives))
{
return;
}
visitedFragmentNames.Add(spread.Name);
var fragment = context.Fragments.FindDefinition(spread.Name);
if (fragment == null
|| !ShouldIncludeNode(context, fragment.Directives)
|| !DoesFragmentConditionMatch(context, fragment.Type.Name, specificType))
{
return;
}
CollectFields(context, specificType, fragment.SelectionSet, fields, visitedFragmentNames);
}
else if (selection is InlineFragment)
{
var inline = (InlineFragment)selection;
var name = inline.Type != null ? inline.Type.Name : specificType.Name;
if (!ShouldIncludeNode(context, inline.Directives)
|| !DoesFragmentConditionMatch(context, name, specificType))
{
return;
}
CollectFields(context, specificType, inline.SelectionSet, fields, visitedFragmentNames);
}
});
return fields;
}
protected bool Equals(SelectionSet selectionSet)
{
return false;
}
protected bool Equals(SelectionSet selectionSet) => false;
private void CollectFields(ExecutionContext context, IGraphType specificType, SelectionSet selectionSet, ref List <string> visitedFragmentNames) //TODO: can be completely eliminated? see Fields.Add
{
if (selectionSet != null)
{
foreach (var selection in selectionSet.SelectionsList)
{
if (selection is Field field)
{
if (!ExecutionHelper.ShouldIncludeNode(context, field.Directives))
{
continue;
}
Add(field);
}
else if (selection is FragmentSpread spread)
{
if ((visitedFragmentNames != null && visitedFragmentNames.Contains(spread.Name)) ||
!ExecutionHelper.ShouldIncludeNode(context, spread.Directives))
{
continue;
}
(visitedFragmentNames ??= new List <string>()).Add(spread.Name);
var fragment = context.Fragments.FindDefinition(spread.Name);
if (fragment == null ||
!ExecutionHelper.ShouldIncludeNode(context, fragment.Directives) ||
!ExecutionHelper.DoesFragmentConditionMatch(context, fragment.Type.Name, specificType))
{
continue;
}
CollectFields(context, specificType, fragment.SelectionSet, ref visitedFragmentNames);
}
else if (selection is InlineFragment inline)
{
var name = inline.Type != null ? inline.Type.Name : specificType.Name;
if (!ExecutionHelper.ShouldIncludeNode(context, inline.Directives) ||
!ExecutionHelper.DoesFragmentConditionMatch(context, name, specificType))
{
continue;
}
CollectFields(context, specificType, inline.SelectionSet, ref visitedFragmentNames);
}
}
}
}
public InlineFragment(SelectionSet selectionSet)
{
#pragma warning disable CS0612 // Type or member is obsolete
SelectionSet = selectionSet;
#pragma warning restore CS0612 // Type or member is obsolete
}
