/// <summary>
/// Adds a new document part to this context, inserting where appropriate and updating the
/// doc scope as necessary.
/// </summary>
/// <param name="docPart">The document part to add to this context.</param>
public void AddDocumentPart(IDocumentPart docPart)
{
switch (docPart)
{
case QueryOperation qo:
this.AddOrUpdateContextItem(qo);
this.BeginNewOperation(qo);
_activePart = qo;
break;
case QueryVariable qv:
this.AddOrUpdateContextItem(qv);
var variables = _operation?.CreateVariableCollection();
variables?.AddVariable(qv);
_activePart = qv;
break;
case QueryFragment qf:
this.AddOrUpdateContextItem(qf);
this.BeginNewDocumentScope();
break;
case FieldSelection fs:
this.AddOrUpdateContextItem(fs);
_selectionSet.AddFieldSelection(fs);
this.DocumentScope = new DocumentScope(this.DocumentScope, fs);
_activePart = fs;
break;
case QueryDirective qd:
// directives never alter the current scope, they just work within it
this.AddOrUpdateContextItem(qd);
this.DocumentScope.InsertDirective(qd);
_activePart = qd;
break;
case QueryInputArgument qa:
if (_activePart is IQueryArgumentContainerDocumentPart argContainer)
{
argContainer.AddArgument(qa);
}
// query arguments never retain parent scopes; they are considered independent
this.AddOrUpdateContextItem(qa);
this.DocumentScope = new DocumentScope(part: qa);
_activePart = qa;
break;
case QueryInputValue qiv:
if (_activePart is IInputValueDocumentPart qia)
{
qia.AssignValue(qiv);
}
else if (_activePart is QueryInputValue partQiv)
{
partQiv.AddChild(qiv);
}
this.AddOrUpdateContextItem(qiv, typeof(QueryInputValue));
_activePart = qiv;
break;
default:
this.Messages.Critical(
$"Unrecognized document element or position. The document element at the current position " +
"could not be processed and the query was terminated. Double check your document and try again.",
Constants.ErrorCodes.INVALID_DOCUMENT,
this.ActiveNode.Location.AsOrigin());
break;
}
}
