public static bool ReferencesRootVariable(Expr expr)
{
var visitor = new ReferencesRootVariableVisitor();
expr.Accept(visitor);
return(visitor._referencesRootVariable);
}
public override void Visit(ChainExpr expr)
{
if (ReferencesRootVariableVisitor.ReferencesRootVariable(expr))
{
_needsAsync = true;
return;
}
// Some things can't be simplified by themselves, but they can be in the
// context of a chain. If this chain doesn't need to be asynchronous, then
// the next key or index won't need it either.
if (NeedsAsyncByItselfVisitor.NeedsAsyncByItself(expr.Next))
{
_needsAsync = true;
return;
}
}
