// Derived classes that need a context to be evaluated
// must override this method to return a new expression that has the simplified versions of their children.
protected virtual Expr SimplifyChildren(VariableScope scope)
{
if (NeedsAsyncVisitor.NeedsAsync(this, scope))
{
throw new NotImplementedException("Must implement SimplifyChildren");
}
else
{
return(this);
}
}
public virtual Expr Simplify(VariableScope scope)
{
if (IsConstant)
{
return(this);
}
if (NeedsAsyncVisitor.NeedsAsync(this, scope))
{
return(SimplifyChildren(scope));
}
else
{
// Since this thing can be simplified in real time, lk
return(new LiteralExpr(Location, this.Apply(new QueryContext(AsyncNull.Instance, scope)).Result));
}
}