static bool GroupIsValid(Racr.AstNode n) {
return n.IsLValid() && n.GetBody().Children().All(x => ((Racr.AstNode)x).IsValid());
}
static bool FormIsValid(Racr.AstNode n) {
return n.GetBody().Children(new Racr.Range(2)).All(x => ((Racr.AstNode)x).IsValid());
}
static Racr.AstNode GroupLLookup(Racr.AstNode n, string name) {
return findL(name, n.GetBody(), n.GetBody().NumChildren());
}
static Racr.AstNode FormErrorQuestion(Racr.AstNode n) { return n.GetBody().Child(1); }
static public void UpdateQuestions(Racr.AstNode n) {
switch (n.NodeType()) {
case "Form":
case "Group":
foreach (var c in n.GetBody().Children()) UpdateQuestions(c as Racr.AstNode);
break;
case "ComputedQuestion":
break;
default:
(n.Widget() as Widget).Set(n.Value());
break;
}
}
static string GroupSExpr(Racr.AstNode n) {
return "(If " + n.GetExpression().SExpr() + " " + String.Join(" ", n.GetBody().Children().Select(x => ((Racr.AstNode)x).SExpr())) + ")";
}
static string FormSExpr(Racr.AstNode n) {
return "(Form " + String.Join(" ", n.GetBody().Children().Skip(1).Select(x => ((Racr.AstNode)x).SExpr())) + ")";
}
static bool GroupRender(Racr.AstNode n) {
foreach (var c in n.GetBody().Children()) {
var child = c as Racr.AstNode;
var w = child.Widget();
child.Render();
if (child.IsShown()) w.Show();
else child.Widget().Hide();
}
return true;
}