public override async IAsyncEnumerable <Path> ComputeSelect(EvaluationContext ctx)
{
if (ListCandidate != null && Template != null)
{
// Expression select
var select = ListCandidate.ComputeSelect(ctx);
await foreach (var atom in select)
{
yield return(atom);
}
// Expression paths
var paths = ListCandidate.ComputePaths(ctx);
await foreach (var path in paths)
{
yield return(path.Append("Id"));
}
// Inner template select
var scopedCtx = ctx.Clone();
scopedCtx.SetLocalVariable(IteratorVariableName, new EvaluationVariable(
eval: TemplateUtil.VariableThatThrows(IteratorVariableName),
selectResolver: () => select,
pathsResolver: () => paths
));
await foreach (var atom in Template.ComputeSelect(scopedCtx))
{
yield return(atom);
}
}
}
public override IAsyncEnumerable <Path> ComputeSelect(EvaluationContext ctx)
{
return(ListCandidate.ComputeSelect(ctx));
}