private static DocumentNode CreateIntrospectionQuery(
SchemaFeatures features)
{
DocumentNode query = Parser.Default.Parse(
GetIntrospectionQuery(_phase2));
OperationDefinitionNode operation =
query.Definitions.OfType <OperationDefinitionNode>().First();
FieldNode schema =
operation.SelectionSet.Selections.OfType <FieldNode>().First();
FieldNode directives =
schema.SelectionSet.Selections.OfType <FieldNode>().First(t =>
t.Name.Value.Equals(_directivesField
, StringComparison.Ordinal));
var selections = directives.SelectionSet.Selections.ToList();
if (features.HasDirectiveLocations)
{
selections.Add(CreateField(_locations));
}
else
{
selections.Add(CreateField(_onField));
selections.Add(CreateField(_onFragment));
selections.Add(CreateField(_onOperation));
}
if (features.HasRepeatableDirectives)
{
selections.Add(CreateField(_isRepeatable));
}
FieldNode newField = directives.WithSelectionSet(
directives.SelectionSet.WithSelections(selections));
selections = schema.SelectionSet.Selections.ToList();
selections.Remove(directives);
selections.Add(newField);
newField = schema.WithSelectionSet(
schema.SelectionSet.WithSelections(selections));
selections = operation.SelectionSet.Selections.ToList();
selections.Remove(schema);
selections.Add(newField);
OperationDefinitionNode newOp = operation.WithSelectionSet(
operation.SelectionSet.WithSelections(selections));
var definitions = query.Definitions.ToList();
definitions.Remove(operation);
definitions.Insert(0, newOp);
return(query.WithDefinitions(definitions));
}
private static DocumentNode CreateIntrospectionQueryDocument(ISchemaFeatures features)
{
DocumentNode query = Utf8GraphQLParser.Parse(GetIntrospectionQuery());
OperationDefinitionNode operation =
query.Definitions.OfType <OperationDefinitionNode>().First();
FieldNode schema =
operation.SelectionSet.Selections.OfType <FieldNode>().First();
if (schema.SelectionSet is null)
{
throw new IntrospectionException();
}
FieldNode directives =
schema.SelectionSet.Selections.OfType <FieldNode>().First(t =>
t.Name.Value.Equals(_directivesField,
StringComparison.Ordinal));
if (directives.SelectionSet is null)
{
throw new IntrospectionException();
}
var selections = directives.SelectionSet.Selections.ToList();
AddDirectiveFeatures(features, selections);
FieldNode newField = directives.WithSelectionSet(
directives.SelectionSet.WithSelections(selections));
selections = schema.SelectionSet.Selections.ToList();
RemoveSubscriptionIfNotSupported(features, selections);
selections.Remove(directives);
selections.Add(newField);
newField = schema.WithSelectionSet(
schema.SelectionSet.WithSelections(selections));
selections = operation.SelectionSet.Selections.ToList();
selections.Remove(schema);
selections.Add(newField);
OperationDefinitionNode newOp = operation.WithSelectionSet(
operation.SelectionSet.WithSelections(selections));
var definitions = query.Definitions.ToList();
definitions.Remove(operation);
definitions.Insert(0, newOp);
return(query.WithDefinitions(definitions));
}