public virtual Expr Visit(WithExpr e)
{
var oV = VisitExpr(e.Obj);
var cV = VisitExpr(e.Code);
return(oV == e.Obj && cV == e.Code ? e : new WithExpr(e.Location, oV, cV));
}
public PExpr Visit(WithExpr e)
{
return(Run(new WithExprFrame(this, e)));
}