public override IEnumerable <AssociativeNode> BuildOutputAst(
List <AssociativeNode> inputAstNodes)
{
AssociativeNode node;
Func <string, bool, Revit.Elements.Element> func = ElementSelector.ByUniqueId;
var results = SelectionResults.ToList();
if (SelectionResults == null || !results.Any())
{
node = AstFactory.BuildNullNode();
}
else if (results.Count == 1)
{
var el = results.First();
// If there is only one object in the list,
// return a single item.
node = AstFactory.BuildFunctionCall(
func,
new List <AssociativeNode>
{
AstFactory.BuildStringNode(el.UniqueId),
AstFactory.BuildBooleanNode(true)
});
}
else
{
var newInputs =
results.Select(
el =>
AstFactory.BuildFunctionCall(
func,
new List <AssociativeNode>
{
AstFactory.BuildStringNode(el.UniqueId),
AstFactory.BuildBooleanNode(true)
})).ToList();
node = AstFactory.BuildExprList(newInputs);
}
return(new[] { AstFactory.BuildAssignment(GetAstIdentifierForOutputIndex(0), node) });
}
public override IEnumerable <AssociativeNode> BuildOutputAst(
List <AssociativeNode> inputAstNodes)
{
AssociativeNode node;
Func <string, object> func = GeometryObjectSelector.ByReferenceStableRepresentation;
var results = SelectionResults.ToList();
if (SelectionResults == null || !results.Any())
{
node = AstFactory.BuildNullNode();
}
else if (results.Count == 1)
{
var stableRef = GetIdentifierFromModelObject(results.First());
node = AstFactory.BuildFunctionCall(
func,
new List <AssociativeNode> {
AstFactory.BuildStringNode(stableRef),
});
}
else
{
var stableRefs = results.Select(GetIdentifierFromModelObject);
var newInputs =
stableRefs.Select(
stableRef =>
AstFactory.BuildFunctionCall(
func,
new List <AssociativeNode> {
AstFactory.BuildStringNode(stableRef),
}))
.ToList();
node = AstFactory.BuildExprList(newInputs);
}
return(new[] { AstFactory.BuildAssignment(GetAstIdentifierForOutputIndex(0), node) });
}