public object VisitSetExpr(Expr.Set expr)
{
Resolve(expr.Value);
Resolve(expr.Obj);
return(null);
}
public Void Visit(Expr.Set expr)
{
Resolve(expr.Value);
Resolve(expr.Obj);
return(Void.Instance);
}
public object VisitSetExpr(Expr.Set expr)
{
var obj = Evaluate(expr.Obj);
if (!(obj is LoxInstance))
{
throw new RuntimeError(expr.Name, "Only instances have fields.");
}
var value = Evaluate(expr.Value);
(obj as LoxInstance).Set(expr.Name, value);
return(value);
}
object Expr.IVisitor <object> .VisitSetExpr(Expr.Set expr)
{
object obj = Evaluate(expr.obj);
if (!(obj is LoxInstance))
{
throw new RuntimeError(expr.name, "Only instances have fields.");
}
object value = Evaluate(expr.value);
((LoxInstance)obj).Set(expr.name, value);
return(value);
}
public string VisitSetExpr(Expr.Set expr)
{
throw new NotImplementedException();
}
object Expr.IVisitor <object> .VisitSetExpr(Expr.Set expr)
{
Resolve(expr.value);
Resolve(expr.obj);
return(null);
}
