public Func <IQuery <T>, ValueTask <IQuery <T> > > Visit(AndNode node, QueryExecutionContext <T> argument)
{
return(result => argument.Item.AllAsync(
(q) => node.Left.Accept(this, argument)(q),
(q) => node.Right.Accept(this, argument)(q)
));
}
public Func <IQuery <T>, ValueTask <IQuery <T> > > Visit(UnaryNode node, QueryExecutionContext <T> argument)
{
var currentQuery = argument.CurrentTermOption.MatchPredicate;
if (!node.UseMatch)
{
currentQuery = argument.CurrentTermOption.NotMatchPredicate;
}
return(result => currentQuery(node.Value, argument.Item, argument));
}
public Func <IQuery <T>, ValueTask <IQuery <T> > > Visit(AndTermNode node, QueryExecutionContext <T> argument)
{
var predicates = new List <Func <IQuery <T>, ValueTask <IQuery <T> > > >();
foreach (var child in node.Children)
{
Func <IQuery <T>, ValueTask <IQuery <T> > > predicate = (q) => argument.Item.AllAsync(
(q) => child.Operation.Accept(this, argument)(q)
);
predicates.Add(predicate);
}
Func <IQuery <T>, ValueTask <IQuery <T> > > result = (Func <IQuery <T>, ValueTask <IQuery <T> > >)Delegate.Combine(predicates.ToArray());
return(result);
}
public Func <IQuery <T>, ValueTask <IQuery <T> > > Visit(TermNode node, QueryExecutionContext <T> argument) => node.Accept(this, argument);
public Func <IQuery <T>, ValueTask <IQuery <T> > > Visit(NotUnaryNode node, QueryExecutionContext <T> argument)
{
return(result => argument.Item.AllAsync(
(q) => node.Operation.Accept(this, argument)(q)
));
}
